Moving source files to src/
authorjongfoster <jongfoster@users.sourceforge.net>
Tue, 4 Jun 2002 14:34:21 +0000 (14:34 +0000)
committerjongfoster <jongfoster@users.sourceforge.net>
Tue, 4 Jun 2002 14:34:21 +0000 (14:34 +0000)
52 files changed:
src/actionlist.h [new file with mode: 0644]
src/actions.c [new file with mode: 0644]
src/actions.h [new file with mode: 0644]
src/amiga.c [new file with mode: 0644]
src/amiga.h [new file with mode: 0644]
src/cgi.c [new file with mode: 0644]
src/cgi.h [new file with mode: 0644]
src/cgiedit.c [new file with mode: 0644]
src/cgiedit.h [new file with mode: 0644]
src/cgisimple.c [new file with mode: 0644]
src/cgisimple.h [new file with mode: 0644]
src/cygwin.h [new file with mode: 0644]
src/deanimate.c [new file with mode: 0644]
src/deanimate.h [new file with mode: 0644]
src/encode.c [new file with mode: 0644]
src/encode.h [new file with mode: 0644]
src/errlog.c [new file with mode: 0644]
src/errlog.h [new file with mode: 0644]
src/filters.c [new file with mode: 0644]
src/filters.h [new file with mode: 0644]
src/gateway.c [new file with mode: 0644]
src/gateway.h [new file with mode: 0644]
src/jbsockets.c [new file with mode: 0644]
src/jbsockets.h [new file with mode: 0644]
src/jcc.c [new file with mode: 0644]
src/jcc.h [new file with mode: 0644]
src/killpopup.c [new file with mode: 0644]
src/killpopup.h [new file with mode: 0644]
src/list.c [new file with mode: 0644]
src/list.h [new file with mode: 0644]
src/loadcfg.c [new file with mode: 0644]
src/loadcfg.h [new file with mode: 0644]
src/loaders.c [new file with mode: 0644]
src/loaders.h [new file with mode: 0644]
src/miscutil.c [new file with mode: 0644]
src/miscutil.h [new file with mode: 0644]
src/parsers.c [new file with mode: 0644]
src/parsers.h [new file with mode: 0644]
src/pcrs.c [new file with mode: 0644]
src/pcrs.h [new file with mode: 0644]
src/project.h [new file with mode: 0644]
src/ssplit.c [new file with mode: 0644]
src/ssplit.h [new file with mode: 0644]
src/urlmatch.c [new file with mode: 0644]
src/urlmatch.h [new file with mode: 0644]
src/w32log.c [new file with mode: 0644]
src/w32log.h [new file with mode: 0644]
src/w32res.h [new file with mode: 0644]
src/w32taskbar.c [new file with mode: 0644]
src/w32taskbar.h [new file with mode: 0644]
src/win32.c [new file with mode: 0644]
src/win32.h [new file with mode: 0644]

diff --git a/src/actionlist.h b/src/actionlist.h
new file mode 100644 (file)
index 0000000..c7247f9
--- /dev/null
@@ -0,0 +1,173 @@
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/actionlist.h,v $
+ *
+ * Purpose     :  Master list of supported actions.
+ *                Not really a header, since it generates code.
+ *                This is included (3 times!) from actions.c
+ *                Each time, the following macros are defined to
+ *                suitable values beforehand:
+ *                    DEFINE_ACTION_MULTI()
+ *                    DEFINE_ACTION_STRING()
+ *                    DEFINE_ACTION_BOOL()
+ *                    DEFINE_ACTION_ALIAS
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and 
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: actionlist.h,v $
+ *    Revision 1.17  2002/05/14 21:25:55  oes
+ *    Renamed prevent-(setting/reading)-cookies to crunch-(incoming/outgoing)-cookies
+ *
+ *    Revision 1.16  2002/04/24 02:15:18  oes
+ *    Renamed actions as discussed, Aliased old action names to new ones.
+ *
+ *    Revision 1.15  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.14  2002/03/24 16:32:08  jongfoster
+ *    Removing logo option
+ *
+ *    Revision 1.13  2002/03/24 15:23:33  jongfoster
+ *    Name changes
+ *
+ *    Revision 1.12  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.11  2002/03/12 01:42:49  oes
+ *    Introduced modular filters
+ *
+ *    Revision 1.10  2002/03/08 18:19:14  jongfoster
+ *    Adding +image-blocker{pattern} option to edit interface
+ *
+ *    Revision 1.9  2001/11/22 21:58:41  jongfoster
+ *    Adding action +no-cookies-keep
+ *
+ *    Revision 1.8  2001/10/10 16:42:52  oes
+ *    Fixed a bug, Added +limit-connect string action
+ *
+ *    Revision 1.7  2001/10/07 15:33:59  oes
+ *    Introduced a +no-compression action
+ *    Introduced a +downgrade action
+ *
+ *    Revision 1.6  2001/09/16 15:47:37  jongfoster
+ *    First version of CGI-based edit interface.  This is very much a
+ *    work-in-progress, and you can't actually use it to edit anything
+ *    yet.  You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
+ *    to have any effect.
+ *
+ *    Revision 1.5  2001/07/18 12:27:03  oes
+ *    Changed deanimate-gifs to string action
+ *
+ *    Revision 1.4  2001/07/13 13:52:12  oes
+ *     - Formatting
+ *     - Introduced new action ACTION_DEANIMATE
+ *
+ *    Revision 1.3  2001/06/07 23:03:56  jongfoster
+ *    Added standard comment at top of file.
+ *
+ *
+ *********************************************************************/
+\f
+
+#if !(defined(DEFINE_ACTION_BOOL) && defined(DEFINE_ACTION_MULTI) && defined(DEFINE_ACTION_STRING))
+#error Please define lots of macros before including "actionlist.h".
+#endif /* !defined(all the DEFINE_ACTION_xxx macros) */
+
+#ifndef DEFINE_CGI_PARAM_RADIO
+#define DEFINE_CGI_PARAM_RADIO(name, bit, index, value, is_default)
+#define DEFINE_CGI_PARAM_CUSTOM(name, bit, index, default_val)
+#define DEFINE_CGI_PARAM_NO_RADIO(name, bit, index, default_val)
+#endif /* ndef DEFINE_CGI_PARAM_RADIO */
+
+DEFINE_ACTION_MULTI      ("add-header",                 ACTION_MULTI_ADD_HEADER)
+DEFINE_ACTION_BOOL       ("block",                      ACTION_BLOCK)
+DEFINE_ACTION_BOOL       ("crunch-incoming-cookies",    ACTION_NO_COOKIE_SET)
+DEFINE_ACTION_BOOL       ("crunch-outgoing-cookies",    ACTION_NO_COOKIE_READ)
+DEFINE_ACTION_STRING     ("deanimate-gifs",             ACTION_DEANIMATE,       ACTION_STRING_DEANIMATE)
+DEFINE_CGI_PARAM_RADIO   ("deanimate-gifs",             ACTION_DEANIMATE,       ACTION_STRING_DEANIMATE,     "first", 0)
+DEFINE_CGI_PARAM_RADIO   ("deanimate-gifs",             ACTION_DEANIMATE,       ACTION_STRING_DEANIMATE,     "last",  1)
+DEFINE_ACTION_BOOL       ("downgrade-http-version",     ACTION_DOWNGRADE)
+DEFINE_ACTION_BOOL       ("fast-redirects",             ACTION_FAST_REDIRECTS)
+DEFINE_ACTION_MULTI      ("filter",                     ACTION_MULTI_FILTER)
+DEFINE_ACTION_BOOL       ("handle-as-image",            ACTION_IMAGE)
+DEFINE_ACTION_BOOL       ("hide-forwarded-for-headers", ACTION_HIDE_FORWARDED)
+DEFINE_ACTION_STRING     ("hide-from-header",           ACTION_HIDE_FROM,       ACTION_STRING_FROM)
+DEFINE_CGI_PARAM_RADIO   ("hide-from-header",           ACTION_HIDE_FROM,       ACTION_STRING_FROM,          "block", 1)
+DEFINE_CGI_PARAM_CUSTOM  ("hide-from-header",           ACTION_HIDE_FROM,       ACTION_STRING_FROM,          "spam_me_senseless@sittingduck.xyz")
+DEFINE_ACTION_STRING     ("hide-referer",               ACTION_HIDE_REFERER,    ACTION_STRING_REFERER)
+DEFINE_CGI_PARAM_RADIO   ("hide-referer",               ACTION_HIDE_REFERER,    ACTION_STRING_REFERER,       "forge", 1)
+DEFINE_CGI_PARAM_RADIO   ("hide-referer",               ACTION_HIDE_REFERER,    ACTION_STRING_REFERER,       "block", 0)
+DEFINE_CGI_PARAM_CUSTOM  ("hide-referer",               ACTION_HIDE_REFERER,    ACTION_STRING_REFERER,       "http://www.google.com/")
+DEFINE_ACTION_STRING     ("hide-user-agent",            ACTION_HIDE_USER_AGENT, ACTION_STRING_USER_AGENT)
+DEFINE_CGI_PARAM_NO_RADIO("hide-user-agent",            ACTION_HIDE_USER_AGENT, ACTION_STRING_USER_AGENT,    "Privoxy/3.0 (Anonymous)")
+DEFINE_ACTION_BOOL       ("kill-popups",                ACTION_NO_POPUPS)
+DEFINE_ACTION_STRING     ("limit-connect",              ACTION_LIMIT_CONNECT,   ACTION_STRING_LIMIT_CONNECT)
+DEFINE_CGI_PARAM_NO_RADIO("limit-connect",              ACTION_LIMIT_CONNECT,   ACTION_STRING_LIMIT_CONNECT,  "443")
+DEFINE_ACTION_BOOL       ("prevent-compression",        ACTION_NO_COMPRESSION)
+DEFINE_ACTION_BOOL       ("send-vanilla-wafer",         ACTION_VANILLA_WAFER)
+DEFINE_ACTION_MULTI      ("send-wafer",                 ACTION_MULTI_WAFER)
+DEFINE_ACTION_BOOL       ("session-cookies-only",       ACTION_NO_COOKIE_KEEP)
+DEFINE_ACTION_STRING     ("set-image-blocker",          ACTION_IMAGE_BLOCKER,   ACTION_STRING_IMAGE_BLOCKER)
+DEFINE_CGI_PARAM_RADIO   ("set-image-blocker",          ACTION_IMAGE_BLOCKER,   ACTION_STRING_IMAGE_BLOCKER, "pattern", 1)
+DEFINE_CGI_PARAM_RADIO   ("set-image-blocker",          ACTION_IMAGE_BLOCKER,   ACTION_STRING_IMAGE_BLOCKER, "blank", 0)
+DEFINE_CGI_PARAM_CUSTOM  ("set-image-blocker",          ACTION_IMAGE_BLOCKER,   ACTION_STRING_IMAGE_BLOCKER,  CGI_PREFIX "show-banner?type=pattern")
+
+
+#if DEFINE_ACTION_ALIAS
+
+/* 
+ * Alternative spellings
+ */
+DEFINE_ACTION_BOOL       ("kill-popup",      ACTION_NO_POPUPS)
+DEFINE_ACTION_STRING     ("hide-referrer",   ACTION_HIDE_REFERER,    ACTION_STRING_REFERER)
+DEFINE_ACTION_BOOL       ("prevent-keeping-cookies", ACTION_NO_COOKIE_KEEP)
+
+/* 
+ * Pre-3.0 compatibility
+ */
+DEFINE_ACTION_BOOL       ("prevent-reading-cookies", ACTION_NO_COOKIE_READ)
+DEFINE_ACTION_BOOL       ("prevent-setting-cookies", ACTION_NO_COOKIE_SET)
+DEFINE_ACTION_BOOL       ("downgrade",               ACTION_DOWNGRADE)
+DEFINE_ACTION_BOOL       ("hide-forwarded",          ACTION_HIDE_FORWARDED)
+DEFINE_ACTION_STRING     ("hide-from",               ACTION_HIDE_FROM,       ACTION_STRING_FROM)
+DEFINE_ACTION_BOOL       ("image",                   ACTION_IMAGE)
+DEFINE_ACTION_STRING     ("image-blocker",           ACTION_IMAGE_BLOCKER,   ACTION_STRING_IMAGE_BLOCKER)
+DEFINE_ACTION_BOOL       ("no-compression",          ACTION_NO_COMPRESSION)
+DEFINE_ACTION_BOOL       ("no-cookies-keep",         ACTION_NO_COOKIE_KEEP)
+DEFINE_ACTION_BOOL       ("no-cookies-read",         ACTION_NO_COOKIE_READ)
+DEFINE_ACTION_BOOL       ("no-cookies-set",          ACTION_NO_COOKIE_SET)
+DEFINE_ACTION_BOOL       ("no-popups",               ACTION_NO_POPUPS)
+#endif /* if DEFINE_ACTION_ALIAS */
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+#undef DEFINE_CGI_PARAM_CUSTOM
+#undef DEFINE_CGI_PARAM_RADIO
+#undef DEFINE_CGI_PARAM_NO_RADIO
+
diff --git a/src/actions.c b/src/actions.c
new file mode 100644 (file)
index 0000000..967faad
--- /dev/null
@@ -0,0 +1,1660 @@
+const char actions_rcs[] = "$Id: actions.c,v 1.33 2002/05/26 12:14:19 roro Exp $";
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/actions.c,v $
+ *
+ * Purpose     :  Declares functions to work with actions files
+ *                Functions declared include: FIXME
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: actions.c,v $
+ *    Revision 1.33  2002/05/26 12:14:19  roro
+ *    Change unsigned to unsigned long in actions_name struct.  This closes
+ *    SourceForge Bug #539284.
+ *
+ *    Revision 1.32  2002/05/12 21:36:29  jongfoster
+ *    Correcting function comments
+ *
+ *    Revision 1.31  2002/05/06 07:56:50  oes
+ *    Made actions_to_html independent of FEATURE_CGI_EDIT_ACTIONS
+ *
+ *    Revision 1.30  2002/04/30 11:14:52  oes
+ *    Made csp the first parameter in *action_to_html
+ *
+ *    Revision 1.29  2002/04/26 19:30:54  jongfoster
+ *    - current_action_to_html(): Adding help link for the "-" form of
+ *      one-string actions.
+ *    - Some actions had "<br>-", some "<br> -" (note the space).
+ *      Standardizing on no space.
+ *    - Greatly simplifying some of the code by using string_join()
+ *      where appropriate.
+ *
+ *    Revision 1.28  2002/04/26 12:53:15  oes
+ *     - CGI AF editor now writes action lines split into
+ *       single lines with line continuation
+ *     - actions_to_html now embeds each action name in
+ *       link to chapter
+ *     - current_action_to_text is now called current_action_to_html
+ *       and acts like actions_to_html
+ *
+ *    Revision 1.27  2002/04/24 02:10:31  oes
+ *     - Jon's patch for multiple AFs:
+ *       - split load_actions_file, add load_one_actions_file
+ *       - make csp->actions_list files an array
+ *       - remember file id with each action
+ *     - Copy_action now frees dest action before copying
+ *
+ *    Revision 1.26  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.25  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.24  2002/03/16 23:54:06  jongfoster
+ *    Adding graceful termination feature, to help look for memory leaks.
+ *    If you enable this (which, by design, has to be done by hand
+ *    editing config.h) and then go to http://i.j.b/die, then the program
+ *    will exit cleanly after the *next* request.  It should free all the
+ *    memory that was used.
+ *
+ *    Revision 1.23  2002/03/07 03:46:16  oes
+ *    Fixed compiler warnings
+ *
+ *    Revision 1.22  2002/01/21 00:27:02  jongfoster
+ *    Allowing free_action(NULL).
+ *    Moving the functions that #include actionlist.h to the end of the file,
+ *    because the Visual C++ 97 debugger gets extremely confused if you try
+ *    to debug any code that comes after them in the file.
+ *
+ *    Revision 1.21  2002/01/17 20:54:44  jongfoster
+ *    Renaming free_url to free_url_spec, since it frees a struct url_spec.
+ *
+ *    Revision 1.20  2001/11/22 21:56:49  jongfoster
+ *    Making action_spec->flags into an unsigned long rather than just an
+ *    unsigned int.
+ *    Fixing a bug in the display of -add-header and -wafer
+ *
+ *    Revision 1.19  2001/11/13 00:14:07  jongfoster
+ *    Fixing stupid bug now I've figured out what || means.
+ *    (It always returns 0 or 1, not one of it's paramaters.)
+ *
+ *    Revision 1.18  2001/11/07 00:06:06  steudten
+ *    Add line number in error output for lineparsing for
+ *    actionsfile.
+ *
+ *    Revision 1.17  2001/10/25 03:40:47  david__schmidt
+ *    Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
+ *    threads to call select() simultaneously.  So, it's time to do a real, live,
+ *    native OS/2 port.  See defines for __EMX__ (the porting layer) vs. __OS2__
+ *    (native). Both versions will work, but using __OS2__ offers multi-threading.
+ *
+ *    Revision 1.16  2001/10/23 21:30:30  jongfoster
+ *    Adding error-checking to selected functions.
+ *
+ *    Revision 1.15  2001/10/14 21:58:22  jongfoster
+ *    Adding support for the CGI-based editor:
+ *    - Exported get_actions()
+ *    - Added new function free_alias_list()
+ *    - Added support for {{settings}} and {{description}} blocks
+ *      in the actions file.  They are currently ignored.
+ *    - Added restriction to only one {{alias}} block which must appear
+ *      first in the file, to simplify the editor's rewriting rules.
+ *    - Note that load_actions_file() is no longer used by the CGI-based
+ *      editor, but some of the other routines in this file are.
+ *
+ *    Revision 1.14  2001/09/22 16:36:59  jongfoster
+ *    Removing unused parameter fs from read_config_line()
+ *
+ *    Revision 1.13  2001/09/16 15:47:37  jongfoster
+ *    First version of CGI-based edit interface.  This is very much a
+ *    work-in-progress, and you can't actually use it to edit anything
+ *    yet.  You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
+ *    to have any effect.
+ *
+ *    Revision 1.12  2001/09/16 13:21:27  jongfoster
+ *    Changes to use new list functions.
+ *
+ *    Revision 1.11  2001/09/14 00:17:32  jongfoster
+ *    Tidying up memory allocation. New function init_action().
+ *
+ *    Revision 1.10  2001/09/10 10:14:34  oes
+ *    Removing unused variable
+ *
+ *    Revision 1.9  2001/07/30 22:08:36  jongfoster
+ *    Tidying up #defines:
+ *    - All feature #defines are now of the form FEATURE_xxx
+ *    - Permanently turned off WIN_GUI_EDIT
+ *    - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
+ *
+ *    Revision 1.8  2001/06/29 13:19:52  oes
+ *    Removed logentry from cancelled commit
+ *
+ *    Revision 1.7  2001/06/09 10:55:28  jongfoster
+ *    Changing BUFSIZ ==> BUFFER_SIZE
+ *
+ *    Revision 1.6  2001/06/07 23:04:34  jongfoster
+ *    Made get_actions() static.
+ *
+ *    Revision 1.5  2001/06/03 19:11:48  oes
+ *    adapted to new enlist_unique arg format
+ *
+ *    Revision 1.4  2001/06/01 20:03:42  jongfoster
+ *    Better memory management - current_action->strings[] now
+ *    contains copies of the strings, not the original.
+ *
+ *    Revision 1.3  2001/06/01 18:49:17  jongfoster
+ *    Replaced "list_share" with "list" - the tiny memory gain was not
+ *    worth the extra complexity.
+ *
+ *    Revision 1.2  2001/05/31 21:40:00  jongfoster
+ *    Removing some commented out, obsolete blocks of code.
+ *
+ *    Revision 1.1  2001/05/31 21:16:46  jongfoster
+ *    Moved functions to process the action list into this new file.
+ *
+ *
+ *********************************************************************/
+\f
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include "project.h"
+#include "jcc.h"
+#include "list.h"
+#include "actions.h"
+#include "miscutil.h"
+#include "errlog.h"
+#include "loaders.h"
+#include "encode.h"
+#include "urlmatch.h"
+#include "cgi.h"
+
+const char actions_h_rcs[] = ACTIONS_H_VERSION;
+
+
+/*
+ * We need the main list of options.
+ *
+ * First, we need a way to tell between boolean, string, and multi-string
+ * options.  For string and multistring options, we also need to be
+ * able to tell the difference between a "+" and a "-".  (For bools,
+ * the "+"/"-" information is encoded in "add" and "mask").  So we use
+ * an enumerated type (well, the preprocessor equivalent).  Here are
+ * the values:
+ */
+#define AV_NONE       0 /* +opt -opt */
+#define AV_ADD_STRING 1 /* +stropt{string} */
+#define AV_REM_STRING 2 /* -stropt */
+#define AV_ADD_MULTI  3 /* +multiopt{string} +multiopt{string2} */
+#define AV_REM_MULTI  4 /* -multiopt{string} -multiopt          */
+
+/*
+ * We need a structure to hold the name, flag changes,
+ * type, and string index.
+ */
+struct action_name
+{
+   const char * name;
+   unsigned long mask;   /* a bit set to "0" = remove action */
+   unsigned long add;    /* a bit set to "1" = add action */
+   int takes_value;      /* an AV_... constant */
+   int index;            /* index into strings[] or multi[] */
+};
+
+/*
+ * And with those building blocks in place, here's the array.
+ */
+static const struct action_name action_names[] =
+{
+   /*
+    * Well actually there's no data here - it's in actionlist.h
+    * This keeps it together to make it easy to change.
+    *
+    * Here's the macros used to format it:
+    */
+#define DEFINE_ACTION_MULTI(name,index)                   \
+   { "+" name, ACTION_MASK_ALL, 0, AV_ADD_MULTI, index }, \
+   { "-" name, ACTION_MASK_ALL, 0, AV_REM_MULTI, index },
+#define DEFINE_ACTION_STRING(name,flag,index)                 \
+   { "+" name, ACTION_MASK_ALL, flag, AV_ADD_STRING, index }, \
+   { "-" name, ~flag, 0, AV_REM_STRING, index },
+#define DEFINE_ACTION_BOOL(name,flag)   \
+   { "+" name, ACTION_MASK_ALL, flag }, \
+   { "-" name, ~flag, 0 },
+#define DEFINE_ACTION_ALIAS 1 /* Want aliases please */
+
+#include "actionlist.h"
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+
+   { NULL, 0, 0 } /* End marker */
+};
+
+
+static int load_one_actions_file(struct client_state *csp, int fileid);
+
+
+/*********************************************************************
+ *
+ * Function    :  merge_actions
+ *
+ * Description :  Merge two actions together.
+ *                Similar to "dest += src".
+ *
+ * Parameters  :
+ *          1  :  dest = Actions to modify.
+ *          2  :  src = Action to add.
+ *
+ * Returns     :  JB_ERR_OK or JB_ERR_MEMORY
+ *
+ *********************************************************************/
+jb_err merge_actions (struct action_spec *dest,
+                      const struct action_spec *src)
+{
+   int i;
+   jb_err err;
+
+   dest->mask &= src->mask;
+   dest->add  &= src->mask;
+   dest->add  |= src->add;
+
+   for (i = 0; i < ACTION_STRING_COUNT; i++)
+   {
+      char * str = src->string[i];
+      if (str)
+      {
+         freez(dest->string[i]);
+         dest->string[i] = strdup(str);
+         if (NULL == dest->string[i])
+         {
+            return JB_ERR_MEMORY;
+         }
+      }
+   }
+
+   for (i = 0; i < ACTION_MULTI_COUNT; i++)
+   {
+      if (src->multi_remove_all[i])
+      {
+         /* Remove everything from dest */
+         list_remove_all(dest->multi_remove[i]);
+         dest->multi_remove_all[i] = 1;
+
+         err = list_duplicate(dest->multi_add[i], src->multi_add[i]);
+      }
+      else if (dest->multi_remove_all[i])
+      {
+         /*
+          * dest already removes everything, so we only need to worry
+          * about what we add.
+          */
+         list_remove_list(dest->multi_add[i], src->multi_remove[i]);
+         err = list_append_list_unique(dest->multi_add[i], src->multi_add[i]);
+      }
+      else
+      {
+         /* No "remove all"s to worry about. */
+         list_remove_list(dest->multi_add[i], src->multi_remove[i]);
+         err = list_append_list_unique(dest->multi_remove[i], src->multi_remove[i]);
+         if (!err) err = list_append_list_unique(dest->multi_add[i], src->multi_add[i]);
+      }
+
+      if (err)
+      {
+         return err;
+      }
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  copy_action
+ *
+ * Description :  Copy an action_specs.
+ *                Similar to "dest = src".
+ *
+ * Parameters  :
+ *          1  :  dest = Destination of copy.
+ *          2  :  src = Source for copy.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+jb_err copy_action (struct action_spec *dest,
+                    const struct action_spec *src)
+{
+   int i;
+   jb_err err = JB_ERR_OK;
+
+   free_action(dest);
+   memset(dest, '\0', sizeof(*dest));
+
+   dest->mask = src->mask;
+   dest->add  = src->add;
+
+   for (i = 0; i < ACTION_STRING_COUNT; i++)
+   {
+      char * str = src->string[i];
+      if (str)
+      {
+         str = strdup(str);
+         if (!str)
+         {
+            return JB_ERR_MEMORY;
+         }
+         dest->string[i] = str;
+      }
+   }
+
+   for (i = 0; i < ACTION_MULTI_COUNT; i++)
+   {
+      dest->multi_remove_all[i] = src->multi_remove_all[i];
+      err = list_duplicate(dest->multi_remove[i], src->multi_remove[i]);
+      if (err)
+      {
+         return err;
+      }
+      err = list_duplicate(dest->multi_add[i],    src->multi_add[i]);
+      if (err)
+      {
+         return err;
+      }
+   }
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  free_action
+ *
+ * Description :  Destroy an action_spec.  Frees memory used by it,
+ *                except for the memory used by the struct action_spec
+ *                itself.
+ *
+ * Parameters  :
+ *          1  :  src = Source to free.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void free_action (struct action_spec *src)
+{
+   int i;
+
+   if (src == NULL)
+   {
+      return;
+   }
+
+   for (i = 0; i < ACTION_STRING_COUNT; i++)
+   {
+      freez(src->string[i]);
+   }
+
+   for (i = 0; i < ACTION_MULTI_COUNT; i++)
+   {
+      destroy_list(src->multi_remove[i]);
+      destroy_list(src->multi_add[i]);
+   }
+
+   memset(src, '\0', sizeof(*src));
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_action_token
+ *
+ * Description :  Parses a line for the first action.
+ *                Modifies it's input array, doesn't allocate memory.
+ *                e.g. given:
+ *                *line="  +abc{def}  -ghi "
+ *                Returns:
+ *                *line="  -ghi "
+ *                *name="+abc"
+ *                *value="def"
+ *
+ * Parameters  :
+ *          1  :  line = [in] The line containing the action.
+ *                       [out] Start of next action on line, or
+ *                       NULL if we reached the end of line before
+ *                       we found an action.
+ *          2  :  name = [out] Start of action name, null
+ *                       terminated.  NULL on EOL
+ *          3  :  value = [out] Start of action value, null
+ *                        terminated.  NULL if none or EOL.
+ *
+ * Returns     :  JB_ERR_OK => Ok
+ *                JB_ERR_PARSE => Mismatched {} (line was trashed anyway)
+ *
+ *********************************************************************/
+jb_err get_action_token(char **line, char **name, char **value)
+{
+   char * str = *line;
+   char ch;
+
+   /* set default returns */
+   *line = NULL;
+   *name = NULL;
+   *value = NULL;
+
+   /* Eat any leading whitespace */
+   while ((*str == ' ') || (*str == '\t'))
+   {
+      str++;
+   }
+
+   if (*str == '\0')
+   {
+      return 0;
+   }
+
+   if (*str == '{')
+   {
+      /* null name, just value is prohibited */
+      return JB_ERR_PARSE;
+   }
+
+   *name = str;
+
+   /* parse option */
+   while (((ch = *str) != '\0') &&
+          (ch != ' ') && (ch != '\t') && (ch != '{'))
+   {
+      if (ch == '}')
+      {
+         /* error, '}' without '{' */
+         return JB_ERR_PARSE;
+      }
+      str++;
+   }
+   *str = '\0';
+
+   if (ch != '{')
+   {
+      /* no value */
+      if (ch == '\0')
+      {
+         /* EOL - be careful not to run off buffer */
+         *line = str;
+      }
+      else
+      {
+         /* More to parse next time. */
+         *line = str + 1;
+      }
+      return JB_ERR_OK;
+   }
+
+   str++;
+   *value = str;
+
+   str = strchr(str, '}');
+   if (str == NULL)
+   {
+      /* error */
+      *value = NULL;
+      return JB_ERR_PARSE;
+   }
+
+   /* got value */
+   *str = '\0';
+   *line = str + 1;
+
+   chomp(*value);
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_actions
+ *
+ * Description :  Parses a list of actions.
+ *
+ * Parameters  :
+ *          1  :  line = The string containing the actions.
+ *                       Will be written to by this function.
+ *          2  :  alias_list = Custom alias list, or NULL for none.
+ *          3  :  cur_action = Where to store the action.  Caller
+ *                             allocates memory.
+ *
+ * Returns     :  JB_ERR_OK => Ok
+ *                JB_ERR_PARSE => Parse error (line was trashed anyway)
+ *                nonzero => Out of memory (line was trashed anyway)
+ *
+ *********************************************************************/
+jb_err get_actions(char *line,
+                   struct action_alias * alias_list,
+                   struct action_spec *cur_action)
+{
+   jb_err err;
+   init_action(cur_action);
+   cur_action->mask = ACTION_MASK_ALL;
+
+   while (line)
+   {
+      char * option = NULL;
+      char * value = NULL;
+
+      err = get_action_token(&line, &option, &value);
+      if (err)
+      {
+         return err;
+      }
+
+      if (option)
+      {
+         /* handle option in 'option' */
+
+         /* Check for standard action name */
+         const struct action_name * action = action_names;
+
+         while ( (action->name != NULL) && (0 != strcmpic(action->name, option)) )
+         {
+            action++;
+         }
+         if (action->name != NULL)
+         {
+            /* Found it */
+            cur_action->mask &= action->mask;
+            cur_action->add  &= action->mask;
+            cur_action->add  |= action->add;
+
+            switch (action->takes_value)
+            {
+            case AV_NONE:
+               /* ignore any option. */
+               break;
+            case AV_ADD_STRING:
+               {
+                  /* add single string. */
+
+                  if ((value == NULL) || (*value == '\0'))
+                  {
+                     return JB_ERR_PARSE;
+                  }
+                  /* FIXME: should validate option string here */
+                  freez (cur_action->string[action->index]);
+                  cur_action->string[action->index] = strdup(value);
+                  if (NULL == cur_action->string[action->index])
+                  {
+                     return JB_ERR_MEMORY;
+                  }
+                  break;
+               }
+            case AV_REM_STRING:
+               {
+                  /* remove single string. */
+
+                  freez (cur_action->string[action->index]);
+                  break;
+               }
+            case AV_ADD_MULTI:
+               {
+                  /* append multi string. */
+
+                  struct list * remove_p = cur_action->multi_remove[action->index];
+                  struct list * add_p    = cur_action->multi_add[action->index];
+
+                  if ((value == NULL) || (*value == '\0'))
+                  {
+                     return JB_ERR_PARSE;
+                  }
+
+                  list_remove_item(remove_p, value);
+                  err = enlist_unique(add_p, value, 0);
+                  if (err)
+                  {
+                     return err;
+                  }
+                  break;
+               }
+            case AV_REM_MULTI:
+               {
+                  /* remove multi string. */
+
+                  struct list * remove_p = cur_action->multi_remove[action->index];
+                  struct list * add_p    = cur_action->multi_add[action->index];
+
+                  if ( (value == NULL) || (*value == '\0')
+                     || ((*value == '*') && (value[1] == '\0')) )
+                  {
+                     /*
+                      * no option, or option == "*".
+                      *
+                      * Remove *ALL*.
+                      */
+                     list_remove_all(remove_p);
+                     list_remove_all(add_p);
+                     cur_action->multi_remove_all[action->index] = 1;
+                  }
+                  else
+                  {
+                     /* Valid option - remove only 1 option */
+
+                     if ( !cur_action->multi_remove_all[action->index] )
+                     {
+                        /* there isn't a catch-all in the remove list already */
+                        err = enlist_unique(remove_p, value, 0);
+                        if (err)
+                        {
+                           return err;
+                        }
+                     }
+                     list_remove_item(add_p, value);
+                  }
+                  break;
+               }
+            default:
+               /* Shouldn't get here unless there's memory corruption. */
+               assert(0);
+               return JB_ERR_PARSE;
+            }
+         }
+         else
+         {
+            /* try user aliases. */
+            const struct action_alias * alias = alias_list;
+
+            while ( (alias != NULL) && (0 != strcmpic(alias->name, option)) )
+            {
+               alias = alias->next;
+            }
+            if (alias != NULL)
+            {
+               /* Found it */
+               merge_actions(cur_action, alias->action);
+            }
+            else
+            {
+               /* Bad action name */
+               return JB_ERR_PARSE;
+            }
+         }
+      }
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  init_current_action
+ *
+ * Description :  Zero out an action.
+ *
+ * Parameters  :
+ *          1  :  dest = An uninitialized current_action_spec.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void init_current_action (struct current_action_spec *dest)
+{
+   memset(dest, '\0', sizeof(*dest));
+
+   dest->flags = ACTION_MOST_COMPATIBLE;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  init_action
+ *
+ * Description :  Zero out an action.
+ *
+ * Parameters  :
+ *          1  :  dest = An uninitialized action_spec.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void init_action (struct action_spec *dest)
+{
+   memset(dest, '\0', sizeof(*dest));
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  merge_current_action
+ *
+ * Description :  Merge two actions together.
+ *                Similar to "dest += src".
+ *                Differences between this and merge_actions()
+ *                is that this one doesn't allocate memory for
+ *                strings (so "src" better be in memory for at least
+ *                as long as "dest" is, and you'd better free
+ *                "dest" using "free_current_action").
+ *                Also, there is no  mask or remove lists in dest.
+ *                (If we're applying it to a URL, we don't need them)
+ *
+ * Parameters  :
+ *          1  :  dest = Current actions, to modify.
+ *          2  :  src = Action to add.
+ *
+ * Returns  0  :  no error
+ *        !=0  :  error, probably JB_ERR_MEMORY.
+ *
+ *********************************************************************/
+jb_err merge_current_action (struct current_action_spec *dest,
+                             const struct action_spec *src)
+{
+   int i;
+   jb_err err = JB_ERR_OK;
+
+   dest->flags  &= src->mask;
+   dest->flags  |= src->add;
+
+   for (i = 0; i < ACTION_STRING_COUNT; i++)
+   {
+      char * str = src->string[i];
+      if (str)
+      {
+         str = strdup(str);
+         if (!str)
+         {
+            return JB_ERR_MEMORY;
+         }
+         freez(dest->string[i]);
+         dest->string[i] = str;
+      }
+   }
+
+   for (i = 0; i < ACTION_MULTI_COUNT; i++)
+   {
+      if (src->multi_remove_all[i])
+      {
+         /* Remove everything from dest, then add src->multi_add */
+         err = list_duplicate(dest->multi[i], src->multi_add[i]);
+         if (err)
+         {
+            return err;
+         }
+      }
+      else
+      {
+         list_remove_list(dest->multi[i], src->multi_remove[i]);
+         err = list_append_list_unique(dest->multi[i], src->multi_add[i]);
+         if (err)
+         {
+            return err;
+         }
+      }
+   }
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  free_current_action
+ *
+ * Description :  Free memory used by a current_action_spec.
+ *                Does not free the current_action_spec itself.
+ *
+ * Parameters  :
+ *          1  :  src = Source to free.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void free_current_action (struct current_action_spec *src)
+{
+   int i;
+
+   for (i = 0; i < ACTION_STRING_COUNT; i++)
+   {
+      freez(src->string[i]);
+   }
+
+   for (i = 0; i < ACTION_MULTI_COUNT; i++)
+   {
+      destroy_list(src->multi[i]);
+   }
+
+   memset(src, '\0', sizeof(*src));
+}
+
+
+static struct file_list *current_actions_file[MAX_ACTION_FILES]  = {
+   NULL, NULL, NULL, NULL, NULL,
+   NULL, NULL, NULL, NULL, NULL
+};
+
+
+#ifdef FEATURE_GRACEFUL_TERMINATION
+/*********************************************************************
+ *
+ * Function    :  unload_current_actions_file
+ *
+ * Description :  Unloads current actions file - reset to state at
+ *                beginning of program.
+ *
+ * Parameters  :  None
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void unload_current_actions_file(void)
+{
+   if (current_actions_file)
+   {
+      current_actions_file->unloader = unload_actions_file;
+      current_actions_file = NULL;
+   }
+}
+#endif /* FEATURE_GRACEFUL_TERMINATION */
+
+
+/*********************************************************************
+ *
+ * Function    :  unload_actions_file
+ *
+ * Description :  Unloads an actions module.
+ *
+ * Parameters  :
+ *          1  :  file_data = the data structure associated with the
+ *                            actions file.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void unload_actions_file(void *file_data)
+{
+   struct url_actions * next;
+   struct url_actions * cur = (struct url_actions *)file_data;
+   while (cur != NULL)
+   {
+      next = cur->next;
+      free_url_spec(cur->url);
+      free_action(cur->action);
+      freez(cur);
+      cur = next;
+   }
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  free_alias_list
+ *
+ * Description :  Free memory used by a list of aliases.
+ *
+ * Parameters  :
+ *          1  :  alias_list = Linked list to free.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void free_alias_list(struct action_alias *alias_list)
+{
+   while (alias_list != NULL)
+   {
+      struct action_alias * next = alias_list->next;
+      alias_list->next = NULL;
+      freez(alias_list->name);
+      free_action(alias_list->action);
+      free(alias_list);
+      alias_list = next;
+   }
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  load_actions_file
+ *
+ * Description :  Read and parse all the action files and add to files
+ *                list.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns     :  0 => Ok, everything else is an error.
+ *
+ *********************************************************************/
+int load_actions_file(struct client_state *csp)
+{
+   int i;
+   int result;
+
+   for (i = 0; i < MAX_ACTION_FILES; i++)
+   {
+      if (csp->config->actions_file[i])
+      {
+         result = load_one_actions_file(csp, i);
+         if (result)
+         {
+            return result;
+         }
+      }
+      else if (current_actions_file[i])
+      {
+         current_actions_file[i]->unloader = unload_actions_file;
+         current_actions_file[i] = NULL;
+      }
+   }
+
+   return 0;
+}
+
+/*********************************************************************
+ *
+ * Function    :  load_one_actions_file
+ *
+ * Description :  Read and parse a action file and add to files
+ *                list.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  fileid = File index to load.
+ *
+ * Returns     :  0 => Ok, everything else is an error.
+ *
+ *********************************************************************/
+static int load_one_actions_file(struct client_state *csp, int fileid)
+{
+
+   /*
+    * Parser mode.
+    * Note: Keep these in the order they occur in the file, they are
+    * sometimes tested with <=
+    */
+#define MODE_START_OF_FILE 1
+#define MODE_SETTINGS      2
+#define MODE_DESCRIPTION   3
+#define MODE_ALIAS         4
+#define MODE_ACTIONS       5
+
+   int mode = MODE_START_OF_FILE;
+
+   FILE *fp;
+   struct url_actions *last_perm;
+   struct url_actions *perm;
+   char  buf[BUFFER_SIZE];
+   struct file_list *fs;
+   struct action_spec * cur_action = NULL;
+   int cur_action_used = 0;
+   struct action_alias * alias_list = NULL;
+   unsigned long linenum = 0;
+
+   if (!check_file_changed(current_actions_file[fileid], csp->config->actions_file[fileid], &fs))
+   {
+      /* No need to load */
+      csp->actions_list[fileid] = current_actions_file[fileid];
+      return 0;
+   }
+   if (!fs)
+   {
+      log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error finding file: %E",
+                csp->config->actions_file[fileid]);
+      return 1; /* never get here */
+   }
+
+   fs->f = last_perm = (struct url_actions *)zalloc(sizeof(*last_perm));
+   if (last_perm == NULL)
+   {
+      log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': out of memory!",
+                csp->config->actions_file[fileid]);
+      return 1; /* never get here */
+   }
+
+   if ((fp = fopen(csp->config->actions_file[fileid], "r")) == NULL)
+   {
+      log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error opening file: %E",
+                csp->config->actions_file[fileid]);
+      return 1; /* never get here */
+   }
+
+   while (read_config_line(buf, sizeof(buf), fp, &linenum) != NULL)
+   {
+      if (*buf == '{')
+      {
+         /* It's a header block */
+         if (buf[1] == '{')
+         {
+            /* It's {{settings}} or {{alias}} */
+            int len = strlen(buf);
+            char * start = buf + 2;
+            char * end = buf + len - 1;
+            if ((len < 5) || (*end-- != '}') || (*end-- != '}'))
+            {
+               /* too short */
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': invalid line (%lu): %s", 
+                  csp->config->actions_file[fileid], linenum, buf);
+               return 1; /* never get here */
+            }
+
+            /* Trim leading and trailing whitespace. */
+            end[1] = '\0';
+            chomp(start);
+
+            if (*start == '\0')
+            {
+               /* too short */
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': invalid line (%lu): {{ }}",
+                  csp->config->actions_file[fileid], linenum);
+               return 1; /* never get here */
+            }
+
+            /*
+             * An actionsfile can optionally contain the following blocks.
+             * They *MUST* be in this order, to simplify processing:
+             *
+             * {{settings}}
+             * name=value...
+             *
+             * {{description}}
+             * ...free text, format TBD, but no line may start with a '{'...
+             *
+             * {{alias}}
+             * name=actions...
+             *
+             * The actual actions must be *after* these special blocks.
+             * None of these special blocks may be repeated.
+             *
+             */
+            if (0 == strcmpic(start, "settings"))
+            {
+               /* it's a {{settings}} block */
+               if (mode >= MODE_SETTINGS)
+               {
+                  /* {{settings}} must be first thing in file and must only
+                   * appear once.
+                   */
+                  fclose(fp);
+                  log_error(LOG_LEVEL_FATAL,
+                     "can't load actions file '%s': line %lu: {{settings}} must only appear once, and it must be before anything else.",
+                     csp->config->actions_file[fileid], linenum);
+               }
+               mode = MODE_SETTINGS;
+            }
+            else if (0 == strcmpic(start, "description"))
+            {
+               /* it's a {{description}} block */
+               if (mode >= MODE_DESCRIPTION)
+               {
+                  /* {{description}} is a singleton and only {{settings}} may proceed it
+                   */
+                  fclose(fp);
+                  log_error(LOG_LEVEL_FATAL,
+                     "can't load actions file '%s': line %lu: {{description}} must only appear once, and only a {{settings}} block may be above it.",
+                     csp->config->actions_file[fileid], linenum);
+               }
+               mode = MODE_DESCRIPTION;
+            }
+            else if (0 == strcmpic(start, "alias"))
+            {
+               /* it's an {{alias}} block */
+               if (mode >= MODE_ALIAS)
+               {
+                  /* {{alias}} must be first thing in file, possibly after
+                   * {{settings}} and {{description}}
+                   *
+                   * {{alias}} must only appear once.
+                   *
+                   * Note that these are new restrictions introduced in
+                   * v2.9.10 in order to make actionsfile editing simpler.
+                   * (Otherwise, reordering actionsfile entries without
+                   * completely rewriting the file becomes non-trivial)
+                   */
+                  fclose(fp);
+                  log_error(LOG_LEVEL_FATAL,
+                     "can't load actions file '%s': line %lu: {{alias}} must only appear once, and it must be before all actions.",
+                     csp->config->actions_file[fileid], linenum);
+               }
+               mode = MODE_ALIAS;
+            }
+            else
+            {
+               /* invalid {{something}} block */
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': invalid line (%lu): {{%s}}",
+                  csp->config->actions_file[fileid], linenum, start);
+               return 1; /* never get here */
+            }
+         }
+         else
+         {
+            /* It's an actions block */
+
+            char  actions_buf[BUFFER_SIZE];
+            char * end;
+
+            /* set mode */
+            mode    = MODE_ACTIONS;
+
+            /* free old action */
+            if (cur_action)
+            {
+               if (!cur_action_used)
+               {
+                  free_action(cur_action);
+                  free(cur_action);
+               }
+               cur_action = NULL;
+            }
+            cur_action_used = 0;
+            cur_action = (struct action_spec *)zalloc(sizeof(*cur_action));
+            if (cur_action == NULL)
+            {
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': out of memory",
+                  csp->config->actions_file[fileid]);
+               return 1; /* never get here */
+            }
+            init_action(cur_action);
+
+            /* trim { */
+            strcpy(actions_buf, buf + 1);
+
+            /* check we have a trailing } and then trim it */
+            end = actions_buf + strlen(actions_buf) - 1;
+            if (*end != '}')
+            {
+               /* No closing } */
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': invalid line (%lu): %s",
+                  csp->config->actions_file[fileid], linenum, buf);
+               return 1; /* never get here */
+            }
+            *end = '\0';
+
+            /* trim any whitespace immediately inside {} */
+            chomp(actions_buf);
+
+            if (get_actions(actions_buf, alias_list, cur_action))
+            {
+               /* error */
+               fclose(fp);
+               log_error(LOG_LEVEL_FATAL,
+                  "can't load actions file '%s': invalid line (%lu): %s",
+                  csp->config->actions_file[fileid], linenum, buf);
+               return 1; /* never get here */
+            }
+         }
+      }
+      else if (mode == MODE_SETTINGS)
+      {
+         /*
+          * Part of the {{settings}} block.
+          * Ignore for now, but we may want to read & check permissions
+          * when we go multi-user.
+          */
+      }
+      else if (mode == MODE_DESCRIPTION)
+      {
+         /*
+          * Part of the {{description}} block.
+          * Ignore for now.
+          */
+      }
+      else if (mode == MODE_ALIAS)
+      {
+         /*
+          * define an alias
+          */
+         char  actions_buf[BUFFER_SIZE];
+         struct action_alias * new_alias;
+
+         char * start = strchr(buf, '=');
+         char * end = start;
+
+         if ((start == NULL) || (start == buf))
+         {
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': invalid alias line (%lu): %s",
+               csp->config->actions_file[fileid], linenum, buf);
+            return 1; /* never get here */
+         }
+
+         if ((new_alias = zalloc(sizeof(*new_alias))) == NULL)
+         {
+            fclose(fp);
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': out of memory!",
+               csp->config->actions_file[fileid]);
+            return 1; /* never get here */
+         }
+
+         /* Eat any the whitespace before the '=' */
+         end--;
+         while ((*end == ' ') || (*end == '\t'))
+         {
+            /*
+             * we already know we must have at least 1 non-ws char
+             * at start of buf - no need to check
+             */
+            end--;
+         }
+         end[1] = '\0';
+
+         /* Eat any the whitespace after the '=' */
+         start++;
+         while ((*start == ' ') || (*start == '\t'))
+         {
+            start++;
+         }
+         if (*start == '\0')
+         {
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': invalid alias line (%lu): %s",
+               csp->config->actions_file[fileid], linenum, buf);
+            return 1; /* never get here */
+         }
+
+         new_alias->name = strdup(buf);
+
+         strcpy(actions_buf, start);
+
+         if (get_actions(actions_buf, alias_list, new_alias->action))
+         {
+            /* error */
+            fclose(fp);
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': invalid alias line (%lu): %s = %s",
+               csp->config->actions_file[fileid], linenum, buf, start);
+            return 1; /* never get here */
+         }
+
+         /* add to list */
+         new_alias->next = alias_list;
+         alias_list = new_alias;
+      }
+      else if (mode == MODE_ACTIONS)
+      {
+         /* it's a URL pattern */
+
+         /* allocate a new node */
+         if ((perm = zalloc(sizeof(*perm))) == NULL)
+         {
+            fclose(fp);
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': out of memory!",
+               csp->config->actions_file[fileid]);
+            return 1; /* never get here */
+         }
+
+         /* Save flags */
+         copy_action (perm->action, cur_action);
+
+         /* Save the URL pattern */
+         if (create_url_spec(perm->url, buf))
+         {
+            fclose(fp);
+            log_error(LOG_LEVEL_FATAL,
+               "can't load actions file '%s': line %lu: cannot create URL pattern from: %s",
+               csp->config->actions_file[fileid], linenum, buf);
+            return 1; /* never get here */
+         }
+
+         /* add it to the list */
+         last_perm->next = perm;
+         last_perm = perm;
+      }
+      else if (mode == MODE_START_OF_FILE)
+      {
+         /* oops - please have a {} line as 1st line in file. */
+         fclose(fp);
+         log_error(LOG_LEVEL_FATAL,
+            "can't load actions file '%s': first needed line (%lu) is invalid: %s",
+            csp->config->actions_file[fileid], linenum, buf);
+         return 1; /* never get here */
+      }
+      else
+      {
+         /* How did we get here? This is impossible! */
+         fclose(fp);
+         log_error(LOG_LEVEL_FATAL,
+            "can't load actions file '%s': INTERNAL ERROR - mode = %d",
+            csp->config->actions_file[fileid], mode);
+         return 1; /* never get here */
+      }
+   }
+
+   fclose(fp);
+
+   free_action(cur_action);
+
+   free_alias_list(alias_list);
+
+   /* the old one is now obsolete */
+   if (current_actions_file[fileid])
+   {
+      current_actions_file[fileid]->unloader = unload_actions_file;
+   }
+
+   fs->next    = files->next;
+   files->next = fs;
+   current_actions_file[fileid] = fs;
+
+   csp->actions_list[fileid] = fs;
+
+   return(0);
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  actions_to_text
+ *
+ * Description :  Converts a actionsfile entry from the internal
+ *                structurt into a text line.  The output is split
+ *                into one line for each action with line continuation. 
+ *
+ * Parameters  :
+ *          1  :  action = The action to format.
+ *
+ * Returns     :  A string.  Caller must free it.
+ *                NULL on out-of-memory error.
+ *
+ *********************************************************************/
+char * actions_to_text(struct action_spec *action)
+{
+   unsigned mask = action->mask;
+   unsigned add  = action->add;
+   char * result = strdup("");
+   struct list_entry * lst;
+
+   /* sanity - prevents "-feature +feature" */
+   mask |= add;
+
+
+#define DEFINE_ACTION_BOOL(__name, __bit)          \
+   if (!(mask & __bit))                            \
+   {                                               \
+      string_append(&result, " -" __name " \\\n"); \
+   }                                               \
+   else if (add & __bit)                           \
+   {                                               \
+      string_append(&result, " +" __name " \\\n"); \
+   }
+
+#define DEFINE_ACTION_STRING(__name, __bit, __index)   \
+   if (!(mask & __bit))                                \
+   {                                                   \
+      string_append(&result, " -" __name " \\\n");     \
+   }                                                   \
+   else if (add & __bit)                               \
+   {                                                   \
+      string_append(&result, " +" __name "{");         \
+      string_append(&result, action->string[__index]); \
+      string_append(&result, "} \\\n");                \
+   }
+
+#define DEFINE_ACTION_MULTI(__name, __index)         \
+   if (action->multi_remove_all[__index])            \
+   {                                                 \
+      string_append(&result, " -" __name " \\\n");   \
+   }                                                 \
+   else                                              \
+   {                                                 \
+      lst = action->multi_remove[__index]->first;    \
+      while (lst)                                    \
+      {                                              \
+         string_append(&result, " -" __name "{");    \
+         string_append(&result, lst->str);           \
+         string_append(&result, "} \\\n");           \
+         lst = lst->next;                            \
+      }                                              \
+   }                                                 \
+   lst = action->multi_add[__index]->first;          \
+   while (lst)                                       \
+   {                                                 \
+      string_append(&result, " +" __name "{");       \
+      string_append(&result, lst->str);              \
+      string_append(&result, "} \\\n");              \
+      lst = lst->next;                               \
+   }
+
+#define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
+
+#include "actionlist.h"
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+
+   return result;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  actions_to_html
+ *
+ * Description :  Converts a actionsfile entry from numeric form
+ *                ("mask" and "add") to a <br>-seperated HTML string
+ *                in which each action is linked to its chapter in
+ *                the user manual.
+ *
+ * Parameters  :
+ *          1  :  csp    = Client state (for config)
+ *          2  :  action = Action spec to be converted
+ *
+ * Returns     :  A string.  Caller must free it.
+ *                NULL on out-of-memory error.
+ *
+ *********************************************************************/
+char * actions_to_html(struct client_state *csp,
+                       struct action_spec *action)
+{
+   unsigned mask = action->mask;
+   unsigned add  = action->add;
+   char * result = strdup("");
+   struct list_entry * lst;
+
+   /* sanity - prevents "-feature +feature" */
+   mask |= add;
+
+
+#define DEFINE_ACTION_BOOL(__name, __bit)       \
+   if (!(mask & __bit))                         \
+   {                                            \
+      string_append(&result, "\n<br>-");        \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }                                            \
+   else if (add & __bit)                        \
+   {                                            \
+      string_append(&result, "\n<br>+");        \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }
+
+#define DEFINE_ACTION_STRING(__name, __bit, __index) \
+   if (!(mask & __bit))                              \
+   {                                                 \
+      string_append(&result, "\n<br>-");             \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }                                                 \
+   else if (add & __bit)                             \
+   {                                                 \
+      string_append(&result, "\n<br>+");             \
+      string_join(&result, add_help_link(__name, csp->config)); \
+      string_append(&result, "{");                   \
+      string_join(&result, html_encode(action->string[__index])); \
+      string_append(&result, "}");                   \
+   }
+
+#define DEFINE_ACTION_MULTI(__name, __index)          \
+   if (action->multi_remove_all[__index])             \
+   {                                                  \
+      string_append(&result, "\n<br>-");              \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }                                                  \
+   else                                               \
+   {                                                  \
+      lst = action->multi_remove[__index]->first;     \
+      while (lst)                                     \
+      {                                               \
+         string_append(&result, "\n<br>-");           \
+         string_join(&result, add_help_link(__name, csp->config)); \
+         string_append(&result, "{");                 \
+         string_join(&result, html_encode(lst->str)); \
+         string_append(&result, "}");                 \
+         lst = lst->next;                             \
+      }                                               \
+   }                                                  \
+   lst = action->multi_add[__index]->first;           \
+   while (lst)                                        \
+   {                                                  \
+      string_append(&result, "\n<br>+");              \
+      string_join(&result, add_help_link(__name, csp->config)); \
+      string_append(&result, "{");                    \
+      string_join(&result, html_encode(lst->str));    \
+      string_append(&result, "}");                    \
+      lst = lst->next;                                \
+   }
+
+#define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
+
+#include "actionlist.h"
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+
+   /* trim leading <br> */
+   if (result && *result)
+   {
+      char * s = result;
+      result = strdup(result + 5);
+      free(s);
+   }
+
+   return result;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  current_actions_to_html
+ *
+ * Description :  Converts a curren action spec to a <br> seperated HTML
+ *                text in which each action is linked to its chapter in
+ *                the user manual.
+ *
+ * Parameters  :
+ *          1  :  csp    = Client state (for config) 
+ *          2  :  action = Current action spec to be converted
+ *
+ * Returns     :  A string.  Caller must free it.
+ *                NULL on out-of-memory error.
+ *
+ *********************************************************************/
+char *current_action_to_html(struct client_state *csp,
+                             struct current_action_spec *action)
+{
+   unsigned long flags  = action->flags;
+   char * result = strdup("");
+   struct list_entry * lst;
+
+#define DEFINE_ACTION_BOOL(__name, __bit)  \
+   if (flags & __bit)                      \
+   {                                       \
+      string_append(&result, "\n<br>+");   \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }                                       \
+   else                                    \
+   {                                       \
+      string_append(&result, "\n<br>-");   \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }
+
+#define DEFINE_ACTION_STRING(__name, __bit, __index)   \
+   if (flags & __bit)                                  \
+   {                                                   \
+      string_append(&result, "\n<br>+");               \
+      string_join(&result, add_help_link(__name, csp->config)); \
+      string_append(&result, "{");                     \
+      string_join(&result, html_encode(action->string[__index])); \
+      string_append(&result, "}");                     \
+   }                                                   \
+   else                                                \
+   {                                                   \
+      string_append(&result, "\n<br>-");               \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }
+
+#define DEFINE_ACTION_MULTI(__name, __index)           \
+   lst = action->multi[__index]->first;                \
+   if (lst == NULL)                                    \
+   {                                                   \
+      string_append(&result, "\n<br>-");              \
+      string_join(&result, add_help_link(__name, csp->config)); \
+   }                                                   \
+   else                                                \
+   {                                                   \
+      while (lst)                                      \
+      {                                                \
+         string_append(&result, "\n<br>+");            \
+         string_join(&result, add_help_link(__name, csp->config)); \
+         string_append(&result, "{");                  \
+         string_join(&result, html_encode(lst->str));  \
+         string_append(&result, "}");                  \
+         lst = lst->next;                              \
+      }                                                \
+   }
+
+#define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
+
+#include "actionlist.h"
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+
+   return result;
+}
diff --git a/src/actions.h b/src/actions.h
new file mode 100644 (file)
index 0000000..07cf2ed
--- /dev/null
@@ -0,0 +1,161 @@
+#ifndef ACTIONS_H_INCLUDED
+#define ACTIONS_H_INCLUDED
+#define ACTIONS_H_VERSION "$Id: actions.h,v 1.12 2002/05/06 07:56:50 oes Exp $"
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/actions.h,v $
+ *
+ * Purpose     :  Declares functions to work with actions files
+ *                Functions declared include: FIXME
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and 
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: actions.h,v $
+ *    Revision 1.12  2002/05/06 07:56:50  oes
+ *    Made actions_to_html independent of FEATURE_CGI_EDIT_ACTIONS
+ *
+ *    Revision 1.11  2002/04/30 11:14:52  oes
+ *    Made csp the first parameter in *action_to_html
+ *
+ *    Revision 1.10  2002/04/26 12:53:33  oes
+ *     -  actions_to_html signature change
+ *     -  current_action_to_text: renamed to current_action_to_html
+ *        and signature change
+ *
+ *    Revision 1.9  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.8  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.7  2002/03/16 23:54:06  jongfoster
+ *    Adding graceful termination feature, to help look for memory leaks.
+ *    If you enable this (which, by design, has to be done by hand
+ *    editing config.h) and then go to http://i.j.b/die, then the program
+ *    will exit cleanly after the *next* request.  It should free all the
+ *    memory that was used.
+ *
+ *    Revision 1.6  2001/10/23 21:30:30  jongfoster
+ *    Adding error-checking to selected functions.
+ *
+ *    Revision 1.5  2001/10/14 21:58:22  jongfoster
+ *    Adding support for the CGI-based editor:
+ *    - Exported get_actions()
+ *    - Added new function free_alias_list()
+ *    - Added support for {{settings}} and {{description}} blocks
+ *      in the actions file.  They are currently ignored.
+ *    - Added restriction to only one {{alias}} block which must appear
+ *      first in the file, to simplify the editor's rewriting rules.
+ *    - Note that load_actions_file() is no longer used by the CGI-based
+ *      editor, but some of the other routines in this file are.
+ *
+ *    Revision 1.4  2001/09/16 15:47:37  jongfoster
+ *    First version of CGI-based edit interface.  This is very much a
+ *    work-in-progress, and you can't actually use it to edit anything
+ *    yet.  You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
+ *    to have any effect.
+ *
+ *    Revision 1.3  2001/09/14 00:17:32  jongfoster
+ *    Tidying up memory allocation. New function init_action().
+ *
+ *    Revision 1.2  2001/07/29 19:01:11  jongfoster
+ *    Changed _FILENAME_H to FILENAME_H_INCLUDED.
+ *    Added forward declarations for needed structures.
+ *
+ *    Revision 1.1  2001/05/31 21:16:46  jongfoster
+ *    Moved functions to process the action list into this new file.
+ *
+ *
+ *********************************************************************/
+\f
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+struct action_spec;
+struct current_action_spec;
+struct client_state;
+
+
+
+/* This structure is used to hold user-defined aliases */
+struct action_alias
+{
+   const char * name;
+   struct action_spec action[1];
+   struct action_alias * next;
+};
+
+
+extern jb_err get_actions (char *line, 
+                           struct action_alias * alias_list,
+                           struct action_spec *cur_action);
+extern void free_alias_list(struct action_alias *alias_list);
+
+extern void init_action(struct action_spec *dest);
+extern void free_action(struct action_spec *src);
+extern jb_err merge_actions (struct action_spec *dest, 
+                             const struct action_spec *src);
+extern jb_err copy_action (struct action_spec *dest, 
+                           const struct action_spec *src);
+extern char * actions_to_text     (struct action_spec *action);
+extern char * actions_to_html     (struct client_state *csp,
+                                   struct action_spec *action);
+extern void init_current_action     (struct current_action_spec *dest);
+extern void free_current_action     (struct current_action_spec *src);
+extern jb_err merge_current_action  (struct current_action_spec *dest, 
+                                     const struct action_spec *src);
+extern char * current_action_to_html(struct client_state *csp,
+                                     struct current_action_spec *action);
+
+extern jb_err get_action_token(char **line, char **name, char **value);
+extern void unload_actions_file(void *file_data);
+extern int load_actions_file(struct client_state *csp);
+
+#ifdef FEATURE_GRACEFUL_TERMINATION
+void unload_current_actions_file(void);
+#endif
+
+
+/* Revision control strings from this header and associated .c file */
+extern const char actions_rcs[];
+extern const char actions_h_rcs[];
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* ndef ACTIONS_H_INCLUDED */
+
+/*
+  Local Variables:
+  tab-width: 3
+  end:
+*/
+
diff --git a/src/amiga.c b/src/amiga.c
new file mode 100644 (file)
index 0000000..6964eab
--- /dev/null
@@ -0,0 +1,286 @@
+const char amiga_rcs[] = "$Id: amiga.c,v 1.9 2002/03/26 22:29:54 swa Exp $";
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/amiga.c,v $
+ *
+ * Purpose     :  Amiga-specific declarations.
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: amiga.c,v $
+ *    Revision 1.9  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.8  2002/03/25 19:32:15  joergs
+ *    Name in version string changed from junkbuster to Privoxy.
+ *
+ *    Revision 1.7  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.6  2002/03/09 20:03:52  jongfoster
+ *    - Making various functions return int rather than size_t.
+ *      (Undoing a recent change).  Since size_t is unsigned on
+ *      Windows, functions like read_socket that return -1 on
+ *      error cannot return a size_t.
+ *
+ *      THIS WAS A MAJOR BUG - it caused frequent, unpredictable
+ *      crashes, and also frequently caused JB to jump to 100%
+ *      CPU and stay there.  (Because it thought it had just
+ *      read ((unsigned)-1) == 4Gb of data...)
+ *
+ *    - The signature of write_socket has changed, it now simply
+ *      returns success=0/failure=nonzero.
+ *
+ *    - Trying to get rid of a few warnings --with-debug on
+ *      Windows, I've introduced a new type "jb_socket".  This is
+ *      used for the socket file descriptors.  On Windows, this
+ *      is SOCKET (a typedef for unsigned).  Everywhere else, it's
+ *      an int.  The error value can't be -1 any more, so it's
+ *      now JB_INVALID_SOCKET (which is -1 on UNIX, and in
+ *      Windows it maps to the #define INVALID_SOCKET.)
+ *
+ *    - The signature of bind_port has changed.
+ *
+ *    Revision 1.5  2002/03/03 09:18:03  joergs
+ *    Made jumbjuster work on AmigaOS again.
+ *
+ *    Revision 1.4  2001/10/07 15:35:13  oes
+ *    Replaced 6 boolean members of csp with one bitmap (csp->flags)
+ *
+ *    Revision 1.3  2001/09/12 22:54:51  joergs
+ *    Stacksize of main thread increased.
+ *
+ *    Revision 1.2  2001/05/23 00:13:58  joergs
+ *    AmigaOS support fixed.
+ *
+ *    Revision 1.1.1.1  2001/05/15 13:58:46  oes
+ *    Initial import of version 2.9.3 source tree
+ *
+ *
+ *********************************************************************/
+\f
+
+#include "config.h"
+
+#ifdef AMIGA
+
+#include <stdio.h>
+#include <signal.h>
+
+#include "project.h"
+
+const char amiga_h_rcs[] = AMIGA_H_VERSION;
+
+unsigned long __stack = 100*1024;
+static char ver[] = "$VER: Privoxy " __AMIGAVERSION__ " (" __AMIGADATE__ ")";
+struct Task *main_task = NULL;
+int childs = 0;
+
+void serve(struct client_state *csp);
+
+__saveds ULONG server_thread(void)
+{
+   struct client_state *local_csp;
+   struct UserData UserData;
+   struct Task *me=FindTask(NULL);
+
+   Wait(SIGF_SINGLE);
+   local_csp=(struct client_state *)(me->tc_UserData);
+   me->tc_UserData=&UserData;
+   SocketBase=(APTR)OpenLibrary("bsdsocket.library",3);
+   if(SocketBase)
+   {
+      SetErrnoPtr(&(UserData.eno),sizeof(int));
+      local_csp->cfd=ObtainSocket(local_csp->cfd, AF_INET, SOCK_STREAM, 0);
+      if(JB_INVALID_SOCKET!=local_csp->cfd)
+      {
+         Signal(main_task,SIGF_SINGLE);
+         serve((struct client_state *) local_csp);
+      } else {
+         local_csp->flags &= ~CSP_FLAG_ACTIVE;
+         Signal(main_task,SIGF_SINGLE);
+      }
+      CloseLibrary(SocketBase);
+   } else {
+      local_csp->flags &= ~CSP_FLAG_ACTIVE;
+      Signal(main_task,SIGF_SINGLE);
+   }
+   childs--;
+   return 0;
+}
+
+static BPTR olddir;
+
+void amiga_exit(void)
+{
+   if(SocketBase)
+   {
+      CloseLibrary(SocketBase);
+   }
+   CurrentDir(olddir);
+}
+
+static struct SignalSemaphore memsem;
+static struct SignalSemaphore *memsemptr = NULL;
+static struct UserData GlobalUserData;
+
+void InitAmiga(void)
+{
+   main_task = FindTask(NULL);
+   main_task->tc_UserData = &GlobalUserData;
+
+   if (((struct Library *)SysBase)->lib_Version < 39)
+   {
+      exit(RETURN_FAIL);
+   }
+
+   signal(SIGINT,SIG_IGN);
+   SocketBase = (APTR)OpenLibrary("bsdsocket.library",3);
+   if (!SocketBase)
+   {
+      fprintf(stderr, "Can't open bsdsocket.library V3+\n");
+      exit(RETURN_ERROR);
+   }
+   SetErrnoPtr(&(GlobalUserData.eno),sizeof(int));
+   InitSemaphore(&memsem);
+   memsemptr = &memsem;
+
+   olddir=CurrentDir(GetProgramDir());
+   atexit(amiga_exit);
+}
+
+#ifdef __GNUC__
+#ifdef libnix
+/* multithreadingsafe libnix replacements */
+static void *memPool=NULL;
+
+void *malloc (size_t s)
+{
+   ULONG *mem;
+   LONG size = s;
+
+   if (size<=0)
+   {
+      return NULL;
+   }
+   if (!memPool)
+   {
+      if (!(memPool=CreatePool(MEMF_ANY,32*1024,8*1024)))
+      {
+         return NULL;
+      }
+   }
+   size += sizeof(ULONG) + MEM_BLOCKMASK;
+   size &= ~MEM_BLOCKMASK;
+   if (memsemptr)
+   {
+      ObtainSemaphore(memsemptr);
+   }
+   if ((mem=AllocPooled(memPool,size)))
+   {
+      *mem++=size;
+   }
+   if (memsemptr)
+   {
+      ReleaseSemaphore(memsemptr);
+   }
+   return mem;
+}
+
+void free (void *m)
+{
+   ULONG *mem = m;
+
+   if(mem && memPool)
+   {
+      ULONG size=*--mem;
+
+      if (memsemptr)
+      {
+         ObtainSemaphore(memsemptr);
+      }
+      FreePooled(memPool,mem,size);
+      if (memsemptr)
+      {
+         ReleaseSemaphore(memsemptr);
+      }
+   }
+}
+
+void *realloc (void *old, size_t ns)
+{
+   void *new;
+   LONG osize, *o = old;
+   LONG nsize = ns;
+
+   if (!old)
+   {
+      return malloc(nsize);
+   }
+   osize = (*(o-1)) - sizeof(ULONG);
+   if (nsize <= osize)
+   {
+      return old;
+   }
+   if ((new = malloc(nsize)))
+   {
+      ULONG *n = new;
+
+      osize >>= 2;
+      while(osize--)
+      {
+         *n++ = *o++;
+      }
+      free(old);
+   }
+   return new;
+}
+
+void __memCleanUp (void)
+{
+   if (memsemptr)
+   {
+      ObtainSemaphore(memsemptr);
+   }
+   if (memPool)
+   {
+      DeletePool(memPool);
+   }
+   if (memsemptr)
+   {
+      ReleaseSemaphore(memsemptr);
+   }
+}
+
+#define ADD2LIST(a,b,c) asm(".stabs \"_" #b "\"," #c ",0,0,_" #a )
+#define ADD2EXIT(a,pri) ADD2LIST(a,__EXIT_LIST__,22); \
+                        asm(".stabs \"___EXIT_LIST__\",20,0,0," #pri "+128")
+ADD2EXIT(__memCleanUp,-50);
+#elif !defined(ixemul)
+#error No libnix and no ixemul!?
+#endif /* libnix */
+#else
+#error Only GCC is supported, multithreading safe malloc/free required.
+#endif /* __GNUC__ */
+
+#endif /* def AMIGA */
diff --git a/src/amiga.h b/src/amiga.h
new file mode 100644 (file)
index 0000000..b52a551
--- /dev/null
@@ -0,0 +1,126 @@
+#ifdef AMIGA
+#ifndef AMIGA_H_INCLUDED
+#define AMIGA_H_INCLUDED
+#define AMIGA_H_VERSION "$Id: amiga.h,v 1.9 2002/03/26 22:29:54 swa Exp $"
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/amiga.h,v $
+ *
+ * Purpose     :  Amiga-specific declarations.
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: amiga.h,v $
+ *    Revision 1.9  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.8  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.7  2002/03/03 09:18:03  joergs
+ *    Made jumbjuster work on AmigaOS again.
+ *
+ *    Revision 1.6  2001/10/13 12:46:08  joergs
+ *    Added #undef EINTR to avoid warnings
+ *
+ *    Revision 1.5  2001/07/29 18:43:08  jongfoster
+ *    Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
+ *    ANSI C rules.
+ *
+ *    Revision 1.4  2001/05/29 20:05:06  joergs
+ *    Fixed exit() macro not exiting if called before InitAmiga()
+ *    (junkbuster --help and --version).
+ *
+ *    Revision 1.3  2001/05/25 21:53:27  jongfoster
+ *    Fixing indentation
+ *
+ *    Revision 1.2  2001/05/23 00:13:58  joergs
+ *    AmigaOS support fixed.
+ *
+ *    Revision 1.1.1.1  2001/05/15 13:58:46  oes
+ *    Initial import of version 2.9.3 source tree
+ *
+ *
+ *********************************************************************/
+\f
+
+#define _KERNEL
+#include <sys/socket.h>
+#undef _KERNEL
+
+#define __NOLIBBASE__
+#include <proto/socket.h>
+#undef __NOLIBBASE__
+
+#define __CONSTLIBBASEDECL__ const
+#define DEVICES_TIMER_H
+#include <proto/exec.h>
+#include <exec/tasks.h>
+#include <proto/dos.h>
+#include <dos/dostags.h>
+
+struct UserData
+{
+   struct Library *sb;
+   int eno;
+};
+
+#define SocketBase ((struct Library *)(((struct UserData *)(FindTask(NULL)->tc_UserData))->sb))
+#define errno (((struct UserData *)(FindTask(NULL)->tc_UserData))->eno)
+#define select(a,b,c,d,e) WaitSelect(a,b,c,d,e,NULL)
+#define inet_ntoa(x) Inet_NtoA(x.s_addr)
+
+extern int childs;
+extern struct Task *main_task;
+
+void InitAmiga(void);
+void amiga_exit(void);
+void __memCleanUp(void);
+__saveds ULONG server_thread(void);
+
+#define exit(x)                                             \
+{                                                           \
+   if(main_task)                                            \
+   {                                                        \
+      if(main_task == FindTask(NULL))                       \
+      {                                                     \
+         while(childs) Delay(10*TICKS_PER_SECOND); exit(x); \
+      }                                                     \
+      else                                                  \
+      {                                                     \
+         CloseLibrary(SocketBase);                          \
+         childs--;                                          \
+         RemTask(NULL);                                     \
+      }                                                     \
+   }                                                        \
+   else                                                     \
+   {                                                        \
+      exit(x);                                              \
+   }                                                        \
+}
+
+#undef EINTR
+#define EINTR 0
+
+#endif /* ndef AMIGA_H_INCLUDED */
+#endif /* def AMIGA */
diff --git a/src/cgi.c b/src/cgi.c
new file mode 100644 (file)
index 0000000..e20d8bf
--- /dev/null
+++ b/src/cgi.c
@@ -0,0 +1,2178 @@
+const char cgi_rcs[] = "$Id: cgi.c,v 1.70 2002/05/19 11:33:20 jongfoster Exp $";
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/cgi.c,v $
+ *
+ * Purpose     :  Declares functions to intercept request, generate
+ *                html or gif answers, and to compose HTTP resonses.
+ *                This only contains the framework functions, the
+ *                actual handler functions are declared elsewhere.
+ *                
+ *                Functions declared include:
+ * 
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and 
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: cgi.c,v $
+ *    Revision 1.70  2002/05/19 11:33:20  jongfoster
+ *    If a CGI error was not handled, and propogated back to
+ *    dispatch_known_cgi(), then it was assumed to be "out of memory".
+ *    This gave a very misleading error message.
+ *
+ *    Now other errors will cause a simple message giving the error
+ *    number and asking the user to report a bug.
+ *
+ *    Bug report:
+ *    http://sourceforge.net/tracker/index.php?func=detail
+ *    &aid=557905&group_id=11118&atid=111118
+ *
+ *    Revision 1.69  2002/05/14 21:28:40  oes
+ *     - Fixed add_help_link to link to the (now split) actions
+ *       part of the config chapter
+ *     - Renamed helplink export to actions-help-prefix
+ *
+ *    Revision 1.68  2002/05/12 21:36:29  jongfoster
+ *    Correcting function comments
+ *
+ *    Revision 1.67  2002/04/30 12:02:07  oes
+ *    Nit: updated a comment
+ *
+ *    Revision 1.66  2002/04/26 18:32:57  jongfoster
+ *    Fixing a memory leak on error
+ *
+ *    Revision 1.65  2002/04/26 12:53:51  oes
+ *     - New function add_help_link
+ *     - default_exports now exports links to the user manual
+ *       and a prefix for links into the config chapter
+ *
+ *    Revision 1.64  2002/04/24 02:17:21  oes
+ *     - Better descriptions for CGIs
+ *     - Hide edit-actions, more shortcuts
+ *     - Moved get_char_param, get_string_param and get_number_param here
+ *       from cgiedit.c
+ *
+ *    Revision 1.63  2002/04/15 19:06:43  jongfoster
+ *    Typos
+ *
+ *    Revision 1.62  2002/04/10 19:59:46  jongfoster
+ *    Fixes to #include in templates:
+ *    - Didn't close main file if loading an included template fails.
+ *    - I'm paranoid and want to disallow "#include /etc/passwd".
+ *
+ *    Revision 1.61  2002/04/10 13:37:48  oes
+ *    Made templates modular: template_load now recursive with max depth 1
+ *
+ *    Revision 1.60  2002/04/08 20:50:25  swa
+ *    fixed JB spelling
+ *
+ *    Revision 1.59  2002/04/05 15:51:51  oes
+ *     - added send-stylesheet CGI
+ *     - bugfix: error-pages now get correct request protocol
+ *     - fixed
+ *     - kludged CGI descriptions and menu not to break JS syntax
+ *
+ *    Revision 1.58  2002/03/29 03:33:13  david__schmidt
+ *    Fix Mac OSX compiler warnings
+ *
+ *    Revision 1.57  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.56  2002/03/24 17:50:46  jongfoster
+ *    Fixing compile error if actions file editor disabled
+ *
+ *    Revision 1.55  2002/03/24 16:55:06  oes
+ *    Making GIF checkerboard transparent
+ *
+ *    Revision 1.54  2002/03/24 16:18:15  jongfoster
+ *    Removing old logo
+ *
+ *    Revision 1.53  2002/03/24 16:06:00  oes
+ *    Correct transparency for checkerboard PNG. Thanks, Magnus!
+ *
+ *    Revision 1.52  2002/03/24 15:23:33  jongfoster
+ *    Name changes
+ *
+ *    Revision 1.51  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.50  2002/03/16 23:54:06  jongfoster
+ *    Adding graceful termination feature, to help look for memory leaks.
+ *    If you enable this (which, by design, has to be done by hand
+ *    editing config.h) and then go to http://i.j.b/die, then the program
+ *    will exit cleanly after the *next* request.  It should free all the
+ *    memory that was used.
+ *
+ *    Revision 1.49  2002/03/13 00:27:04  jongfoster
+ *    Killing warnings
+ *
+ *    Revision 1.48  2002/03/08 17:47:07  jongfoster
+ *    Adding comments
+ *
+ *    Revision 1.47  2002/03/08 16:41:33  oes
+ *    Added GIF images again
+ *
+ *    Revision 1.46  2002/03/07 03:48:38  oes
+ *     - Changed built-in images from GIF to PNG
+ *       (with regard to Unisys patent issue)
+ *     - Added a 4x4 pattern PNG which is less intrusive
+ *       than the logo but also clearly marks the deleted banners
+ *
+ *    Revision 1.45  2002/03/06 22:54:35  jongfoster
+ *    Automated function-comment nitpicking.
+ *
+ *    Revision 1.44  2002/03/05 22:43:45  david__schmidt
+ *    - Better error reporting on OS/2
+ *    - Fix double-slash comment (oops)
+ *
+ *    Revision 1.43  2002/03/05 21:33:45  david__schmidt
+ *    - Re-enable OS/2 building after new parms were added
+ *    - Fix false out of memory report when resolving CGI templates when no IP
+ *      address is available of failed attempt (a la no such domain)
+ *
+ *    Revision 1.42  2002/01/21 00:33:20  jongfoster
+ *    Replacing strsav() with the safer string_append() or string_join().
+ *    Adding map_block_keep() to save a few bytes in the edit-actions-list HTML.
+ *    Adding missing html_encode() to error message generators.
+ *    Adding edit-actions-section-swap and many "shortcuts" to the list of CGIs.
+ *
+ *    Revision 1.41  2002/01/17 20:56:22  jongfoster
+ *    Replacing hard references to the URL of the config interface
+ *    with #defines from project.h
+ *
+ *    Revision 1.40  2002/01/09 14:26:46  oes
+ *    Added support for thread-safe gmtime_r call.
+ *
+ *    Revision 1.39  2001/11/16 00:48:13  jongfoster
+ *    Fixing a compiler warning
+ *
+ *    Revision 1.38  2001/11/13 00:31:21  jongfoster
+ *    - Adding new CGIs for use by non-JavaScript browsers:
+ *        edit-actions-url-form
+ *        edit-actions-add-url-form
+ *        edit-actions-remove-url-form
+ *    - Fixing make_menu()'s HTML generation - it now quotes the href parameter.
+ *    - Fixing || bug.
+ *
+ *    Revision 1.37  2001/11/01 14:28:47  david__schmidt
+ *    Show enablement/disablement status in almost all templates.
+ *    There is a little trickiness here: apparent recursive resolution of
+ *    @if-enabled-then@ caused the toggle template to show status out-of-phase with
+ *    the actual enablement status.  So a similar construct,
+ *    @if-enabled-display-then@, is used to resolve the status display on non-'toggle'
+ *    templates.
+ *
+ *    Revision 1.36  2001/10/26 17:33:27  oes
+ *    marginal bugfix
+ *
+ *    Revision 1.35  2001/10/23 21:48:19  jongfoster
+ *    Cleaning up error handling in CGI functions - they now send back
+ *    a HTML error page and should never cause a FATAL error.  (Fixes one
+ *    potential source of "denial of service" attacks).
+ *
+ *    CGI actions file editor that works and is actually useful.
+ *
+ *    Ability to toggle Junkbuster remotely using a CGI call.
+ *
+ *    You can turn off both the above features in the main configuration
+ *    file, e.g. if you are running a multi-user proxy.
+ *
+ *    Revision 1.34  2001/10/18 22:22:09  david__schmidt
+ *    Only show "Local support" on templates conditionally:
+ *      - if either 'admin-address' or 'proxy-info-url' are uncommented in config
+ *      - if not, no Local support section appears
+ *
+ *    Revision 1.33  2001/10/14 22:28:41  jongfoster
+ *    Fixing stupid typo.
+ *
+ *    Revision 1.32  2001/10/14 22:20:18  jongfoster
+ *    - Changes to CGI dispatching method to match CGI names exactly,
+ *      rather than doing a prefix match.
+ *    - No longer need to count the length of the CGI handler names by hand.
+ *    - Adding new handler for 404 error when disptching a CGI, if none of
+ *      the handlers match.
+ *    - Adding new handlers for CGI actionsfile editor.
+ *
+ *    Revision 1.31  2001/10/10 10:56:39  oes
+ *    Failiure to load template now fatal. Before, the user got a hard-to-understand assertion failure from cgi.c
+ *
+ *    Revision 1.30  2001/10/02 15:30:57  oes
+ *    Introduced show-request cgi
+ *
+ *    Revision 1.29  2001/09/20 15:47:44  steudten
+ *
+ *    Fix BUG: Modify int size to size_t size in fill_template()
+ *     - removes big trouble on machines where sizeof(int) != sizeof(size_t).
+ *
+ *    Revision 1.28  2001/09/19 18:00:37  oes
+ *     - Deletef time() FIXME (Can't fail under Linux either, if
+ *       the argument is guaranteed to be in out address space,
+ *       which it is.)
+ *     - Fixed comments
+ *     - Pointer notation cosmetics
+ *     - Fixed a minor bug in template_fill(): Failiure of
+ *       pcrs_execute() now secure.
+ *
+ *    Revision 1.27  2001/09/16 17:08:54  jongfoster
+ *    Moving simple CGI functions from cgi.c to new file cgisimple.c
+ *
+ *    Revision 1.26  2001/09/16 15:47:37  jongfoster
+ *    First version of CGI-based edit interface.  This is very much a
+ *    work-in-progress, and you can't actually use it to edit anything
+ *    yet.  You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
+ *    to have any effect.
+ *
+ *    Revision 1.25  2001/09/16 15:02:35  jongfoster
+ *    Adding i.j.b/robots.txt.
+ *    Inlining add_stats() since it's only ever called from one place.
+ *
+ *    Revision 1.24  2001/09/16 11:38:01  jongfoster
+ *    Splitting fill_template() into 2 functions:
+ *    template_load() loads the file
+ *    template_fill() performs the PCRS regexps.
+ *    This is because the CGI edit interface has a "table row"
+ *    template which is used many times in the page - this
+ *    change means it's only loaded from disk once.
+ *
+ *    Revision 1.23  2001/09/16 11:16:05  jongfoster
+ *    Better error handling in dispatch_cgi() and parse_cgi_parameters()
+ *
+ *    Revision 1.22  2001/09/16 11:00:10  jongfoster
+ *    New function alloc_http_response, for symmetry with free_http_response
+ *
+ *    Revision 1.21  2001/09/13 23:53:03  jongfoster
+ *    Support for both static and dynamically generated CGI pages.
+ *    Correctly setting Last-Modified: and Expires: HTTP headers.
+ *
+ *    Revision 1.20  2001/09/13 23:40:36  jongfoster
+ *    (Cosmetic only) Indentation correction
+ *
+ *    Revision 1.19  2001/09/13 23:31:25  jongfoster
+ *    Moving image data to cgi.c rather than cgi.h.
+ *
+ *    Revision 1.18  2001/08/05 16:06:20  jongfoster
+ *    Modifiying "struct map" so that there are now separate header and
+ *    "map_entry" structures.  This means that functions which modify a
+ *    map no longer need to return a pointer to the modified map.
+ *    Also, it no longer reverses the order of the entries (which may be
+ *    important with some advanced template substitutions).
+ *
+ *    Revision 1.17  2001/08/05 15:57:38  oes
+ *    Adapted finish_http_response to new list_to_text
+ *
+ *    Revision 1.16  2001/08/01 21:33:18  jongfoster
+ *    Changes to fill_template() that reduce memory usage without having
+ *    an impact on performance.  I also renamed some variables so as not
+ *    to clash with the C++ keywords "new" and "template".
+ *
+ *    Revision 1.15  2001/08/01 21:19:22  jongfoster
+ *    Moving file version information to a separate CGI page.
+ *
+ *    Revision 1.14  2001/08/01 00:19:03  jongfoster
+ *    New function: map_conditional() for an if-then-else syntax.
+ *    Changing to use new version of show_defines()
+ *
+ *    Revision 1.13  2001/07/30 22:08:36  jongfoster
+ *    Tidying up #defines:
+ *    - All feature #defines are now of the form FEATURE_xxx
+ *    - Permanently turned off WIN_GUI_EDIT
+ *    - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
+ *
+ *    Revision 1.12  2001/07/29 18:47:05  jongfoster
+ *    Adding missing #include "loadcfg.h"
+ *
+ *    Revision 1.11  2001/07/18 17:24:37  oes
+ *    Changed to conform to new pcrs interface
+ *
+ *    Revision 1.10  2001/07/13 13:53:13  oes
+ *    Removed all #ifdef PCRS and related code
+ *
+ *    Revision 1.9  2001/06/29 21:45:41  oes
+ *    Indentation, CRLF->LF, Tab-> Space
+ *
+ *    Revision 1.8  2001/06/29 13:21:46  oes
+ *    - Cosmetics: renamed and reordered functions, variables,
+ *      texts, improved comments  etc
+ *
+ *    - Removed ij_untrusted_url() The relevant
+ *      info is now part of the "untrusted" page,
+ *      which is generated by filters.c:trust_url()
+ *
+ *    - Generators of content now call finish_http_response()
+ *      themselves, making jcc.c:chat() a little less
+ *      cluttered
+ *
+ *    - Removed obsolete "Pragma: no-cache" from our headers
+ *
+ *    - http_responses now know their head length
+ *
+ *    - fill_template now uses the new interface to pcrs, so that
+ *       - long jobs (like whole files) no longer have to be assembled
+ *         in a fixed size buffer
+ *       - the new T (trivial) option is used, and the replacement may
+ *         contain Perl syntax backrefs without confusing pcrs
+ *
+ *    - Introduced default_exports() which generates a set of exports
+ *      common to all CGIs and other content generators
+ *
+ *    - Introduced convenience function map_block_killer()
+ *
+ *    - Introduced convenience function make_menu()
+ *
+ *    - Introduced CGI-like function error_response() which generates
+ *      the "No such domain" and "Connect failed" messages using the
+ *      CGI platform
+ *
+ *    - cgi_show_url_info:
+ *      - adapted to new CGI features
+ *      - form and answers now generated from same template
+ *      - http:// prefix in URL now OK
+ *
+ *    - cgi_show_status:
+ *      - adapted to new CGI features
+ *      - no longer uses csp->init_proxy_args
+ *
+ *    - cgi_default:
+ *      - moved menu generation to make_menu()
+ *
+ *    - add_stats now writes single export map entries instead
+ *      of a fixed string
+ *
+ *    - Moved redirect_url() to filters.c
+ *
+ *    - Fixed mem leak in free_http_response(), map_block_killer(),
+ *
+ *    - Removed logentry from cancelled commit
+ *
+ *    Revision 1.7  2001/06/09 10:51:58  jongfoster
+ *    Changing "show URL info" handler to new style.
+ *    Changing BUFSIZ ==> BUFFER_SIZE
+ *
+ *    Revision 1.6  2001/06/07 23:05:19  jongfoster
+ *    Removing code related to old forward and ACL files.
+ *
+ *    Revision 1.5  2001/06/05 19:59:16  jongfoster
+ *    Fixing multiline character string (a GCC-only "feature"), and snprintf (it's _snprintf under VC++).
+ *
+ *    Revision 1.4  2001/06/04 10:41:52  swa
+ *    show version string of cgi.h and cgi.c
+ *
+ *    Revision 1.3  2001/06/03 19:12:16  oes
+ *    introduced new cgi handling
+ *
+ *    No revisions before 1.3
+ *
+ **********************************************************************/
+\f
+
+#include "config.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <limits.h>
+#include <assert.h>
+
+#ifdef _WIN32
+#define snprintf _snprintf
+#endif /* def _WIN32 */
+
+#include "project.h"
+#include "cgi.h"
+#include "list.h"
+#include "encode.h"
+#include "ssplit.h"
+#include "errlog.h"
+#include "miscutil.h"
+#include "cgisimple.h"
+#ifdef FEATURE_CGI_EDIT_ACTIONS
+#include "cgiedit.h"
+#endif /* def FEATURE_CGI_EDIT_ACTIONS */
+#include "loadcfg.h"
+/* loadcfg.h is for g_bToggleIJB only */
+
+const char cgi_h_rcs[] = CGI_H_VERSION;
+
+/*
+ * List of CGI functions: name, handler, description
+ * Note: Do NOT use single quotes in the description;
+ *       this will break the dynamic "blocked" template!
+ */
+static const struct cgi_dispatcher cgi_dispatchers[] = {
+   { "",
+         cgi_default,
+         "Privoxy main page" },
+#ifdef FEATURE_GRACEFUL_TERMINATION
+   { "die", 
+         cgi_die,  
+         "<b>Shut down</b> - <em class=\"warning\">Do not deploy this build in a production environment, "
+         "this is a one click Denial Of Service attack!!!</em>" }, 
+#endif
+   { "show-status", 
+         cgi_show_status,  
+         "View & change the current configuration" }, 
+   { "show-version", 
+         cgi_show_version,  
+         "View the source code version numbers" }, 
+   { "show-request", 
+         cgi_show_request,  
+         "View the request headers." }, 
+   { "show-url-info",
+         cgi_show_url_info, 
+         "Look up which actions apply to a URL and why"  },
+#ifdef FEATURE_CGI_EDIT_ACTIONS
+   { "toggle",
+         cgi_toggle, 
+         "Toggle Privoxy on or off" },
+
+   { "edit-actions", /* Edit the actions list */
+         cgi_edit_actions, 
+         NULL },
+   { "eaa", /* Shortcut for edit-actions-add-url-form */
+         cgi_edit_actions_add_url_form, 
+         NULL },
+   { "eau", /* Shortcut for edit-actions-url-form */
+         cgi_edit_actions_url_form, 
+         NULL },
+   { "ear", /* Shortcut for edit-actions-remove-url-form */
+         cgi_edit_actions_remove_url_form, 
+         NULL },
+   { "eafu", /* Shortcut for edit-actions-for-url */
+         cgi_edit_actions_for_url, 
+         NULL },
+   { "eas", /* Shortcut for edit-actions-submit */
+         cgi_edit_actions_submit, 
+         NULL },
+   { "easa", /* Shortcut for edit-actions-section-add */
+         cgi_edit_actions_section_add, 
+         NULL },
+   { "easr", /* Shortcut for edit-actions-section-remove */
+         cgi_edit_actions_section_remove, 
+         NULL },
+   { "eass", /* Shortcut for edit-actions-section-swap */
+         cgi_edit_actions_section_swap, 
+         NULL },
+   { "edit-actions-for-url",
+         cgi_edit_actions_for_url, 
+         NULL /* Edit the actions for (a) specified URL(s) */ },
+   { "edit-actions-list",
+         cgi_edit_actions_list, 
+         NULL /* Edit the actions list */ },
+   { "edit-actions-submit",
+         cgi_edit_actions_submit, 
+         NULL /* Change the actions for (a) specified URL(s) */ },
+   { "edit-actions-url",
+         cgi_edit_actions_url, 
+         NULL /* Change a URL pattern in the actionsfile */ },
+   { "edit-actions-url-form",
+         cgi_edit_actions_url_form, 
+         NULL /* Form to change a URL pattern in the actionsfile */ },
+   { "edit-actions-add-url",
+         cgi_edit_actions_add_url, 
+         NULL /* Add a URL pattern to the actionsfile */ },
+   { "edit-actions-add-url-form",
+         cgi_edit_actions_add_url_form, 
+         NULL /* Form to add a URL pattern to the actionsfile */ },
+   { "edit-actions-remove-url",
+         cgi_edit_actions_remove_url, 
+         NULL /* Remove a URL pattern from the actionsfile */ },
+   { "edit-actions-remove-url-form",
+         cgi_edit_actions_remove_url_form, 
+         NULL /* Form to remove a URL pattern from the actionsfile */ },
+   { "edit-actions-section-add",
+         cgi_edit_actions_section_add, 
+         NULL /* Remove a section from the actionsfile */ },
+   { "edit-actions-section-remove",
+         cgi_edit_actions_section_remove, 
+         NULL /* Remove a section from the actionsfile */ },
+   { "edit-actions-section-swap",
+         cgi_edit_actions_section_swap, 
+         NULL /* Swap two sections in the actionsfile */ },
+#endif /* def FEATURE_CGI_EDIT_ACTIONS */
+   { "robots.txt", 
+         cgi_robots_txt,  
+         NULL /* Sends a robots.txt file to tell robots to go away. */ }, 
+   { "send-banner",
+         cgi_send_banner, 
+         NULL /* Send a built-in image */ },
+   { "send-stylesheet",
+         cgi_send_stylesheet, 
+         NULL /* Send templates/cgi-style.css */ },
+   { "t",
+         cgi_transparent_image, 
+         NULL /* Send a transparent image (short name) */ },
+   { NULL, /* NULL Indicates end of list and default page */
+         cgi_error_404,
+         NULL /* Unknown CGI page */ }
+};
+
+
+/*
+ * Bulit-in images for ad replacement
+ *
+ * Hint: You can encode your own images like this:
+ * cat your-image | perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o", unpack("C", $c)); }'
+ */
+
+#ifdef FEATURE_NO_GIFS
+
+/*
+ * Checkerboard pattern, as a PNG.
+ */
+const char image_pattern_data[] =
+   "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104"
+   "\122\000\000\000\004\000\000\000\004\010\002\000\000\000\046"
+   "\223\011\051\000\000\000\006\142\113\107\104\000\310\000\310"
+   "\000\310\052\045\225\037\000\000\000\032\111\104\101\124\170"
+   "\332\143\070\161\342\304\377\377\377\041\044\003\234\165\342"
+   "\304\011\006\234\062\000\125\200\052\251\125\174\360\223\000"
+   "\000\000\000\111\105\116\104\256\102\140\202";
+
+/*
+ * 1x1 transparant PNG.
+ */
+const char image_blank_data[] =
+ "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104\122"
+ "\000\000\000\004\000\000\000\004\010\006\000\000\000\251\361\236"
+ "\176\000\000\000\007\164\111\115\105\007\322\003\013\020\073\070"
+ "\013\025\036\203\000\000\000\011\160\110\131\163\000\000\013\022"
+ "\000\000\013\022\001\322\335\176\374\000\000\000\004\147\101\115"
+ "\101\000\000\261\217\013\374\141\005\000\000\000\033\111\104\101"
+ "\124\170\332\143\070\161\342\304\207\377\377\377\347\302\150\006"
+ "\144\016\210\146\040\250\002\000\042\305\065\221\270\027\131\110"
+ "\000\000\000\000\111\105\116\104\256\102\140\202";
+#else
+
+/*
+ * Checkerboard pattern, as a GIF.
+ */
+const char image_pattern_data[] =
+   "\107\111\106\070\071\141\004\000\004\000\200\000\000\310\310"
+   "\310\377\377\377\041\376\016\111\040\167\141\163\040\141\040"
+   "\142\141\156\156\145\162\000\041\371\004\001\012\000\001\000"
+   "\054\000\000\000\000\004\000\004\000\000\002\005\104\174\147"
+   "\270\005\000\073";
+
+/*
+ * 1x1 transparant GIF.
+ */
+const char image_blank_data[] =
+   "GIF89a\001\000\001\000\200\000\000\377\377\377\000\000"
+   "\000!\371\004\001\000\000\000\000,\000\000\000\000\001"
+   "\000\001\000\000\002\002D\001\000;";
+#endif
+
+const size_t image_pattern_length = sizeof(image_pattern_data) - 1;
+const size_t image_blank_length   = sizeof(image_blank_data) - 1;
+
+
+static struct http_response cgi_error_memory_response[1];
+
+static struct http_response *dispatch_known_cgi(struct client_state * csp,
+                                                const char * path);
+static struct map *parse_cgi_parameters(char *argstring);
+
+
+/*********************************************************************
+ * 
+ * Function    :  dispatch_cgi
+ *
+ * Description :  Checks if a request URL has either the magical
+ *                hostname CGI_SITE_1_HOST (usually http://p.p/) or
+ *                matches CGI_SITE_2_HOST CGI_SITE_2_PATH (usually
+ *                http://config.privoxy.org/). If so, it passes
+ *                the (rest of the) path onto dispatch_known_cgi, which
+ *                calls the relevant CGI handler function.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns     :  http_response if match, NULL if nonmatch or handler fail
+ *
+ *********************************************************************/
+struct http_response *dispatch_cgi(struct client_state *csp)
+{
+   const char *host = csp->http->host;
+   const char *path = csp->http->path;
+
+   /*
+    * Should we intercept ?
+    */
+
+   /* Note: "example.com" and "example.com." are equivalent hostnames. */
+
+   /* Either the host matches CGI_SITE_1_HOST ..*/
+   if (   ( (0 == strcmpic(host, CGI_SITE_1_HOST))
+         || (0 == strcmpic(host, CGI_SITE_1_HOST ".")))
+       && (path[0] == '/') )
+   {
+      /* ..then the path will all be for us.  Remove leading '/' */
+      path++;
+   }
+   /* Or it's the host part CGI_SITE_2_HOST, and the path CGI_SITE_2_PATH */
+   else if ( ( (0 == strcmpic(host, CGI_SITE_2_HOST ))
+            || (0 == strcmpic(host, CGI_SITE_2_HOST ".")) )
+          && (0 == strncmpic(path, CGI_SITE_2_PATH, strlen(CGI_SITE_2_PATH))) )
+   {
+      /* take everything following CGI_SITE_2_PATH */
+      path += strlen(CGI_SITE_2_PATH);
+      if (*path == '/')
+      {
+         /* skip the forward slash after CGI_SITE_2_PATH */
+         path++;
+      }
+      else if (*path != '\0')
+      {
+         /*
+          * wierdness: URL is /configXXX, where XXX is some string
+          * Do *NOT* intercept.
+          */
+         return NULL;
+      }
+   }
+   else
+   {
+      /* Not a CGI */
+      return NULL;
+   }
+
+   /* 
+    * This is a CGI call.
+    */
+
+   return dispatch_known_cgi(csp, path);
+}
+
+
+/*********************************************************************
+ * 
+ * Function    :  dispatch_known_cgi
+ *
+ * Description :  Processes a CGI once dispatch_cgi has determined that
+ *                it matches one of the magic prefixes. Parses the path
+ *                as a cgi name plus query string, prepares a map that
+ *                maps CGI parameter names to their values, initializes
+ *                the http_response struct, and calls the relevant CGI
+ *                handler function.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  path = Path of CGI, with the CGI prefix removed.
+ *                       Should not have a leading "/".
+ *
+ * Returns     :  http_response, or NULL on handler failure or out of
+ *                memory.
+ *
+ *********************************************************************/
+static struct http_response *dispatch_known_cgi(struct client_state * csp,
+                                                const char * path)
+{
+   const struct cgi_dispatcher *d;
+   struct map *param_list;
+   struct http_response *rsp;
+   char *query_args_start;
+   char *path_copy;
+   jb_err err;
+
+   if (NULL == (path_copy = strdup(path)))
+   {
+      return cgi_error_memory();
+   }
+
+   query_args_start = path_copy;
+   while (*query_args_start && *query_args_start != '?')
+   {
+      query_args_start++;
+   }
+   if (*query_args_start == '?')
+   {
+      *query_args_start++ = '\0';
+   }
+
+   if (NULL == (param_list = parse_cgi_parameters(query_args_start)))
+   {
+      free(path_copy);
+      return cgi_error_memory();
+   }
+
+
+   /*
+    * At this point:
+    * path_copy        = CGI call name
+    * param_list       = CGI params, as map
+    */
+
+   /* Get mem for response or fail*/
+   if (NULL == (rsp = alloc_http_response()))
+   {
+      free(path_copy);
+      free_map(param_list);
+      return cgi_error_memory();
+   }
+
+   log_error(LOG_LEVEL_GPC, "%s%s cgi call", csp->http->hostport, csp->http->path);
+   log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 3", 
+                            csp->ip_addr_str, csp->http->cmd); 
+
+   /* Find and start the right CGI function*/
+   d = cgi_dispatchers;
+   for (;;)
+   {
+      if ((d->name == NULL) || (strcmp(path_copy, d->name) == 0))
+      {
+         err = (d->handler)(csp, rsp, param_list);
+         free(path_copy);
+         free_map(param_list);
+         if (err == JB_ERR_CGI_PARAMS)
+         {
+            err = cgi_error_bad_param(csp, rsp);
+         }
+         if (err && (err != JB_ERR_MEMORY))
+         {
+            /* Unexpected error! Shouldn't get here */
+            log_error(LOG_LEVEL_ERROR, "Unexpected CGI error %d in top-level handler.  Please file a bug report!", err);
+            err = cgi_error_unknown(csp, rsp, err);
+         }
+         if (!err)
+         {
+            /* It worked */
+            return finish_http_response(rsp);
+         }
+         else
+         {
+            /* Error in handler, probably out-of-memory */
+            free_http_response(rsp);
+            return cgi_error_memory();
+         }
+      }
+      d++;
+   }
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  parse_cgi_parameters
+ *
+ * Description :  Parse a URL-encoded argument string into name/value
+ *                pairs and store them in a struct map list.
+ *
+ * Parameters  :
+ *          1  :  argstring = string to be parsed.  Will be trashed.
+ *
+ * Returns     :  pointer to param list, or NULL if out of memory.
+ *
+ *********************************************************************/
+static struct map *parse_cgi_parameters(char *argstring)
+{
+   char *p;
+   char *vector[BUFFER_SIZE];
+   int pairs, i;
+   struct map *cgi_params;
+
+   if (NULL == (cgi_params = new_map()))
+   {
+      return NULL;
+   }
+
+   pairs = ssplit(argstring, "&", vector, SZ(vector), 1, 1);
+
+   for (i = 0; i < pairs; i++)
+   {
+      if ((NULL != (p = strchr(vector[i], '='))) && (*(p+1) != '\0'))
+      {
+         *p = '\0';
+         if (map(cgi_params, url_decode(vector[i]), 0, url_decode(++p), 0))
+         {
+            free_map(cgi_params);
+            return NULL;
+         }
+      }
+   }
+
+   return cgi_params;
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_char_param
+ *
+ * Description :  Get a single-character parameter passed to a CGI
+ *                function.
+ *
+ * Parameters  :
+ *          1  :  parameters = map of cgi parameters
+ *          2  :  param_name = The name of the parameter to read
+ *
+ * Returns     :  Uppercase character on success, '\0' on error.
+ *
+ *********************************************************************/
+char get_char_param(const struct map *parameters,
+                    const char *param_name)
+{
+   char ch;
+
+   assert(parameters);
+   assert(param_name);
+
+   ch = *(lookup(parameters, param_name));
+   if ((ch >= 'a') && (ch <= 'z'))
+   {
+      ch = ch - 'a' + 'A';
+   }
+
+   return ch;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_string_param
+ *
+ * Description :  Get a string paramater, to be used as an
+ *                ACTION_STRING or ACTION_MULTI paramater.
+ *                Validates the input to prevent stupid/malicious
+ *                users from corrupting their action file.
+ *
+ * Parameters  :
+ *          1  :  parameters = map of cgi parameters
+ *          2  :  param_name = The name of the parameter to read
+ *          3  :  pparam = destination for paramater.  Allocated as
+ *                part of the map "parameters", so don't free it.
+ *                Set to NULL if not specified.
+ *
+ * Returns     :  JB_ERR_OK         on success, or if the paramater
+ *                                  was not specified.
+ *                JB_ERR_MEMORY     on out-of-memory.
+ *                JB_ERR_CGI_PARAMS if the paramater is not valid.
+ *
+ *********************************************************************/
+jb_err get_string_param(const struct map *parameters,
+                        const char *param_name,
+                        const char **pparam)
+{
+   const char *param;
+   const char *s;
+   char ch;
+
+   assert(parameters);
+   assert(param_name);
+   assert(pparam);
+
+   *pparam = NULL;
+
+   param = lookup(parameters, param_name);
+   if (!*param)
+   {
+      return JB_ERR_OK;
+   }
+
+   if (strlen(param) >= CGI_PARAM_LEN_MAX)
+   {
+      /*
+       * Too long.
+       *
+       * Note that the length limit is arbitrary, it just seems
+       * sensible to limit it to *something*.  There's no
+       * technical reason for any limit at all.
+       */
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* Check every character to see if it's legal */
+   s = param;
+   while ((ch = *s++) != '\0')
+   {
+      if ( ((unsigned char)ch < (unsigned char)' ')
+        || (ch == '}') )
+      {
+         /* Probable hack attempt, or user accidentally used '}'. */
+         return JB_ERR_CGI_PARAMS;
+      }
+   }
+
+   /* Success */
+   *pparam = param;
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_number_param
+ *
+ * Description :  Get a non-negative integer from the parameters
+ *                passed to a CGI function.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  parameters = map of cgi parameters
+ *          3  :  name = Name of CGI parameter to read
+ *          4  :  pvalue = destination for value.
+ *                         Set to -1 on error.
+ *
+ * Returns     :  JB_ERR_OK         on success
+ *                JB_ERR_MEMORY     on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the parameter was not specified
+ *                                  or is not valid.
+ *
+ *********************************************************************/
+jb_err get_number_param(struct client_state *csp,
+                        const struct map *parameters,
+                        char *name,
+                        unsigned *pvalue)
+{
+   const char *param;
+   char ch;
+   unsigned value;
+
+   assert(csp);
+   assert(parameters);
+   assert(name);
+   assert(pvalue);
+
+   *pvalue = 0; 
+
+   param = lookup(parameters, name);
+   if (!*param)
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* We don't use atoi because I want to check this carefully... */
+
+   value = 0;
+   while ((ch = *param++) != '\0')
+   {
+      if ((ch < '0') || (ch > '9'))
+      {
+         return JB_ERR_CGI_PARAMS;
+      }
+
+      ch -= '0';
+
+      /* Note:
+       *
+       * <limits.h> defines UINT_MAX
+       *
+       * (UINT_MAX - ch) / 10 is the largest number that
+       *     can be safely multiplied by 10 then have ch added.
+       */
+      if (value > ((UINT_MAX - (unsigned)ch) / 10U))
+      {
+         return JB_ERR_CGI_PARAMS;
+      }
+
+      value = value * 10 + ch;
+   }
+
+   /* Success */
+   *pvalue = value;
+
+   return JB_ERR_OK;
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  error_response
+ *
+ * Description :  returns an http_response that explains the reason
+ *                why a request failed.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  templatename = Which template should be used for the answer
+ *          3  :  sys_err = system error number
+ *
+ * Returns     :  A http_response.  If we run out of memory, this
+ *                will be cgi_error_memory().
+ *
+ *********************************************************************/
+struct http_response *error_response(struct client_state *csp,
+                                     const char *templatename,
+                                     int sys_err)
+{
+   jb_err err;
+   struct http_response *rsp;
+   struct map * exports = default_exports(csp, NULL);
+   if (exports == NULL)
+   {
+      return cgi_error_memory();
+   }
+
+   if (NULL == (rsp = alloc_http_response()))
+   {
+      free_map(exports);
+      return cgi_error_memory();
+   }
+
+   err = map(exports, "host", 1, html_encode(csp->http->host), 0);
+   if (!err) err = map(exports, "hostport", 1, html_encode(csp->http->hostport), 0);
+   if (!err) err = map(exports, "path", 1, html_encode(csp->http->path), 0);
+   if (!err) err = map(exports, "error", 1, html_encode_and_free_original(safe_strerror(sys_err)), 0);
+   if (!err) err = map(exports, "protocol", 1, csp->http->ssl ? "https://" : "http://", 1); 
+   if (!err)
+   {
+     err = map(exports, "host-ip", 1, html_encode(csp->http->host_ip_addr_str), 0);
+     if (err)
+     {
+       /* Some failures, like "404 no such domain", don't have an IP address. */
+       err = map(exports, "host-ip", 1, html_encode(csp->http->host), 0);
+     }
+   }
+
+
+   if (err)
+   {
+      free_map(exports);
+      free_http_response(rsp);
+      return cgi_error_memory();
+   }
+
+   if (!strcmp(templatename, "no-such-domain"))
+   {
+      rsp->status = strdup("404 No such domain");
+      if (rsp->status == NULL)
+      {
+         free_map(exports);
+         free_http_response(rsp);
+         return cgi_error_memory();
+      }
+   }
+   else if (!strcmp(templatename, "connect-failed"))
+   {
+      rsp->status = strdup("503 Connect failed");
+      if (rsp->status == NULL)
+      {
+         free_map(exports);
+         free_http_response(rsp);
+         return cgi_error_memory();
+      }
+   }
+
+   err = template_fill_for_cgi(csp, templatename, exports, rsp);
+   if (err)
+   {
+      free_http_response(rsp);
+      return cgi_error_memory();
+   }
+
+   return finish_http_response(rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_init_error_messages
+ *
+ * Description :  Call at the start of the program to initialize
+ *                the error message used by cgi_error_memory().
+ *
+ * Parameters  :  N/A
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void cgi_init_error_messages(void)
+{
+   memset(cgi_error_memory_response, '\0', sizeof(*cgi_error_memory_response));
+   cgi_error_memory_response->head =
+      "HTTP/1.0 500 Internal Privoxy Error\r\n"
+      "Content-Type: text/html\r\n"
+      "\r\n";
+   cgi_error_memory_response->body =
+      "<html>\r\n"
+      "<head><title>500 Internal Privoxy Error</title></head>\r\n"
+      "<body>\r\n"
+      "<h1>500 Internal Privoxy Error</h1>\r\n"
+      "<p>Privoxy <b>ran out of memory</b> while processing your request.</p>\r\n"
+      "<p>Please contact your proxy administrator, or try again later</p>\r\n"
+      "</body>\r\n"
+      "</html>\r\n";
+
+   cgi_error_memory_response->head_length =
+      strlen(cgi_error_memory_response->head);
+   cgi_error_memory_response->content_length =
+      strlen(cgi_error_memory_response->body);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_memory
+ *
+ * Description :  Called if a CGI function runs out of memory.
+ *                Returns a statically-allocated error response.
+ *
+ * Parameters  :  N/A
+ *
+ * Returns     :  http_response data structure for output.  This is
+ *                statically allocated, for obvious reasons.
+ *
+ *********************************************************************/
+struct http_response *cgi_error_memory(void)
+{
+   /* assert that it's been initialized. */
+   assert(cgi_error_memory_response->head);
+
+   return cgi_error_memory_response;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_no_template
+ *
+ * Description :  Almost-CGI function that is called if a template
+ *                cannot be loaded.  Note this is not a true CGI,
+ *                it takes a template name rather than a map of 
+ *                parameters.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  template_name = Name of template that could not
+ *                                be loaded.
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err cgi_error_no_template(struct client_state *csp,
+                             struct http_response *rsp,
+                             const char *template_name)
+{
+   static const char status[] =
+      "500 Internal Privoxy Error";
+   static const char body_prefix[] =
+      "<html>\r\n"
+      "<head><title>500 Internal Privoxy Error</title></head>\r\n"
+      "<body>\r\n"
+      "<h1>500 Internal Privoxy Error</h1>\r\n"
+      "<p>Privoxy encountered an error while processing your request:</p>\r\n"
+      "<p><b>Could not load template file <code>";
+   static const char body_suffix[] =
+      "</code> or one of it's included components.</b></p>\r\n"
+      "<p>Please contact your proxy administrator.</p>\r\n"
+      "<p>If you are the proxy administrator, please put the required file(s)"
+      "in the <code><i>(confdir)</i>/templates</code> directory.  The "
+      "location of the <code><i>(confdir)</i></code> directory "
+      "is specified in the main Privoxy <code>config</code> "
+      "file.  (It's typically the Privoxy install directory"
+#ifndef _WIN32
+      ", or <code>/etc/privoxy/</code>"
+#endif /* ndef _WIN32 */
+      ").</p>\r\n"
+      "</body>\r\n"
+      "</html>\r\n";
+
+   assert(csp);
+   assert(rsp);
+   assert(template_name);
+
+   /* Reset rsp, if needed */
+   freez(rsp->status);
+   freez(rsp->head);
+   freez(rsp->body);
+   rsp->content_length = 0;
+   rsp->head_length = 0;
+   rsp->is_static = 0;
+
+   rsp->body = malloc(strlen(body_prefix) + strlen(template_name) + strlen(body_suffix) + 1);
+   if (rsp->body == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+   strcpy(rsp->body, body_prefix);
+   strcat(rsp->body, template_name);
+   strcat(rsp->body, body_suffix);
+
+   rsp->status = strdup(status);
+   if (rsp->body == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_unknown
+ *
+ * Description :  Almost-CGI function that is called if an unexpected
+ *                error occurs in the top-level CGI dispatcher.
+ *                In this context, "unexpected" means "anything other
+ *                than JB_ERR_MEMORY or JB_ERR_CGI_PARAMS" - CGIs are
+ *                expected to handle all other errors internally,
+ *                since they can give more relavent error messages
+ *                that way.
+ *
+ *                Note this is not a true CGI, it takes an error
+ *                code rather than a map of parameters.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  error_to_report = Error code to report.
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err cgi_error_unknown(struct client_state *csp,
+                         struct http_response *rsp,
+                         jb_err error_to_report)
+{
+   static const char status[] =
+      "500 Internal Privoxy Error";
+   static const char body_prefix[] =
+      "<html>\r\n"
+      "<head><title>500 Internal Privoxy Error</title></head>\r\n"
+      "<body>\r\n"
+      "<h1>500 Internal Privoxy Error</h1>\r\n"
+      "<p>Privoxy encountered an error while processing your request:</p>\r\n"
+      "<p><b>Unexpected internal error: ";
+   static const char body_suffix[] =
+      "</b></p>\r\n"
+      "<p>Please "
+      "<a href=\"http://sourceforge.net/tracker/?group_id=11118&atid=111118\">"
+      "file a bug report</a>.</p>\r\n"
+      "</body>\r\n"
+      "</html>\r\n";
+   char errnumbuf[30];
+   assert(csp);
+   assert(rsp);
+
+   /* Reset rsp, if needed */
+   freez(rsp->status);
+   freez(rsp->head);
+   freez(rsp->body);
+   rsp->content_length = 0;
+   rsp->head_length = 0;
+   rsp->is_static = 0;
+
+   sprintf(errnumbuf, "%d", error_to_report);
+
+   rsp->body = malloc(strlen(body_prefix) + strlen(errnumbuf) + strlen(body_suffix) + 1);
+   if (rsp->body == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+   strcpy(rsp->body, body_prefix);
+   strcat(rsp->body, errnumbuf);
+   strcat(rsp->body, body_suffix);
+
+   rsp->status = strdup(status);
+   if (rsp->body == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_bad_param
+ *
+ * Description :  CGI function that is called if the parameters
+ *                (query string) for a CGI were wrong.
+ *               
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err cgi_error_bad_param(struct client_state *csp,
+                           struct http_response *rsp)
+{
+   struct map *exports;
+
+   assert(csp);
+   assert(rsp);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-bad-param", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  add_help_link
+ *
+ * Description :  Produce a copy of the string given as item,
+ *                embedded in an HTML link to its corresponding
+ *                section (item name in uppercase) in the actions
+ *                chapter of the user manual, (whose URL is given in
+ *                the config and defaults to our web site).
+ *
+ *                FIXME: I currently only work for actions, and would
+ *                       like to be generalized for other topics.
+ *
+ * Parameters  :  
+ *          1  :  item = item (will NOT be free()d.) 
+ *                       It is assumed to be HTML-safe.
+ *          2  :  config = The current configuration.
+ *
+ * Returns     :  String with item embedded in link, or NULL on
+ *                out-of-memory
+ *
+ *********************************************************************/
+char *add_help_link(const char *item,
+                    struct configuration_spec *config)
+{
+   char *result;
+
+   if (!item) return NULL;
+
+   result = strdup("<a href=\"");
+   string_append(&result, config->usermanual);
+   string_append(&result, ACTIONS_HELP_PREFIX);
+   string_join  (&result, string_toupper(item));
+   string_append(&result, "\">");
+   string_append(&result, item);
+   string_append(&result, "</a> ");
+
+   return result;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_http_time
+ *
+ * Description :  Get the time in a format suitable for use in a
+ *                HTTP header - e.g.:
+ *                "Sun, 06 Nov 1994 08:49:37 GMT"
+ *
+ * Parameters  :  
+ *          1  :  time_offset = Time returned will be current time
+ *                              plus this number of seconds.
+ *          2  :  buf = Destination for result.  Must be long enough
+ *                      to hold 29 characters plus a trailing zero.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void get_http_time(int time_offset, char *buf)
+{
+   static const char day_names[7][4] =
+      { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
+   static const char month_names[12][4] =
+      { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
+
+   struct tm *t;
+   time_t current_time;
+
+   assert(buf);
+
+   time(&current_time); /* get current time */
+
+   current_time += time_offset;
+
+   /* get and save the gmt */
+   {
+#ifdef HAVE_GMTIME_R
+      struct tm dummy;
+      t = gmtime_r(&current_time, &dummy);
+#else
+      t = gmtime(&current_time);
+#endif
+   }
+
+   /* Format: "Sun, 06 Nov 1994 08:49:37 GMT" */
+   snprintf(buf, 30,
+      "%s, %02d %s %4d %02d:%02d:%02d GMT",
+      day_names[t->tm_wday],
+      t->tm_mday,
+      month_names[t->tm_mon],
+      t->tm_year + 1900,
+      t->tm_hour,
+      t->tm_min,
+      t->tm_sec
+      );
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  finish_http_response
+ *
+ * Description :  Fill in the missing headers in an http response,
+ *                and flatten the headers to an http head.
+ *
+ * Parameters  :
+ *          1  :  rsp = pointer to http_response to be processed
+ *
+ * Returns     :  A http_response, usually the rsp parameter.
+ *                On error, free()s rsp and returns cgi_error_memory()
+ *
+ *********************************************************************/
+struct http_response *finish_http_response(struct http_response *rsp)
+{
+   char buf[BUFFER_SIZE];
+   jb_err err;
+
+   /* Special case - do NOT change this statically allocated response,
+    * which is ready for output anyway.
+    */
+   if (rsp == cgi_error_memory_response)
+   {
+      return rsp;
+   }
+
+   /* 
+    * Fill in the HTTP Status
+    */
+   sprintf(buf, "HTTP/1.0 %s", rsp->status ? rsp->status : "200 OK");
+   err = enlist_first(rsp->headers, buf);
+
+   /* 
+    * Set the Content-Length
+    */
+   if (rsp->content_length == 0)
+   {
+      rsp->content_length = rsp->body ? strlen(rsp->body) : 0;
+   }
+   if (!err)
+   {
+      sprintf(buf, "Content-Length: %d", (int)rsp->content_length);
+      err = enlist(rsp->headers, buf);
+   }
+
+   /* 
+    * Fill in the default headers:
+    *
+    * Content-Type: default to text/html if not already specified.
+    * Date: set to current date/time.
+    * Last-Modified: set to date/time the page was last changed.
+    * Expires: set to date/time page next needs reloading.
+    * Cache-Control: set to "no-cache" if applicable.
+    * 
+    * See http://www.w3.org/Protocols/rfc2068/rfc2068
+    */
+   if (!err) err = enlist_unique(rsp->headers, "Content-Type: text/html", 13);
+
+   if (rsp->is_static)
+   {
+      /*
+       * Set Expires to about 10 min into the future so it'll get reloaded
+       * occasionally, e.g. if Privoxy gets upgraded.
+       */
+
+      if (!err)
+      {
+         get_http_time(0, buf);
+         err = enlist_unique_header(rsp->headers, "Date", buf);
+      }
+
+      /* Some date in the past. */
+      if (!err) err = enlist_unique_header(rsp->headers, "Last-Modified", "Sat, 17 Jun 2000 12:00:00 GMT");
+
+      if (!err)
+      {
+         get_http_time(10 * 60, buf); /* 10 * 60sec = 10 minutes */
+         err = enlist_unique_header(rsp->headers, "Expires", buf);
+      }
+   }
+   else
+   {
+      /*
+       * Compliant browsers should not cache this due to the "Cache-Control"
+       * setting.  However, to be certain, we also set both "Last-Modified"
+       * and "Expires" to the current time.
+       */
+      if (!err) err = enlist_unique_header(rsp->headers, "Cache-Control", "no-cache");
+
+      get_http_time(0, buf);
+      if (!err) err = enlist_unique_header(rsp->headers, "Date", buf);
+      if (!err) err = enlist_unique_header(rsp->headers, "Last-Modified", buf);
+      if (!err) err = enlist_unique_header(rsp->headers, "Expires", buf);
+   }
+
+
+   /* 
+    * Write the head
+    */
+   if (err || (NULL == (rsp->head = list_to_text(rsp->headers))))
+   {
+      free_http_response(rsp);
+      return cgi_error_memory();
+   }
+   rsp->head_length = strlen(rsp->head);
+
+   return rsp;
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  alloc_http_response
+ *
+ * Description :  Allocates a new http_response structure.
+ *
+ * Parameters  :  N/A
+ *
+ * Returns     :  pointer to a new http_response, or NULL.
+ *
+ *********************************************************************/
+struct http_response *alloc_http_response(void)
+{
+   return (struct http_response *) zalloc(sizeof(struct http_response));
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  free_http_response
+ *
+ * Description :  Free the memory occupied by an http_response
+ *                and its depandant structures.
+ *
+ * Parameters  :
+ *          1  :  rsp = pointer to http_response to be freed
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void free_http_response(struct http_response *rsp)
+{
+   /*
+    * Must special case cgi_error_memory_response, which is never freed.
+    */
+   if (rsp && (rsp != cgi_error_memory_response))
+   {
+      freez(rsp->status);
+      freez(rsp->head);
+      freez(rsp->body);
+      destroy_list(rsp->headers);
+      free(rsp);
+   }
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  template_load
+ *
+ * Description :  CGI support function that loads a given HTML
+ *                template from the confdir, ignoring comment
+ *                lines and following #include statements up to
+ *                a depth of 1.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  template_ptr = Destination for pointer to loaded
+ *                               template text.
+ *          3  :  templatename = name of the HTML template to be used
+ *          4  :  recursive = Flag set if this function calls itself
+ *                            following an #include statament
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *                JB_ERR_FILE if the template file cannot be read
+ *
+ *********************************************************************/
+jb_err template_load(struct client_state *csp, char **template_ptr, 
+                     const char *templatename, int recursive)
+{
+   jb_err err;
+   char *templates_dir_path;
+   char *full_path;
+   char *file_buffer;
+   char *included_module;
+   const char *p;
+   FILE *fp;
+   char buf[BUFFER_SIZE];
+
+   assert(csp);
+   assert(template_ptr);
+   assert(templatename);
+
+   *template_ptr = NULL;
+
+   /* Validate template name.  Paranoia. */
+   for (p = templatename; *p != 0; p++)
+   {
+      if ( ((*p < 'a') || (*p > 'z'))
+        && ((*p < 'A') || (*p > 'Z'))
+        && ((*p < '0') || (*p > '9'))
+        && (*p != '-')
+        && (*p != '.'))
+      {
+         /* Illegal character */
+         return JB_ERR_FILE;
+      }
+   }
+
+   /* Generate full path */
+
+   templates_dir_path = make_path(csp->config->confdir, "templates");
+   if (templates_dir_path == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   full_path = make_path(templates_dir_path, templatename);
+   free(templates_dir_path);
+   if (full_path == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   /* Allocate buffer */
+
+   file_buffer = strdup("");
+   if (file_buffer == NULL)
+   {
+      free(full_path);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Open template file */
+
+   if (NULL == (fp = fopen(full_path, "r")))
+   {
+      log_error(LOG_LEVEL_ERROR, "Cannot open template file %s: %E", full_path);
+      free(full_path);
+      free(file_buffer);
+      return JB_ERR_FILE;
+   }
+   free(full_path);
+
+   /* 
+    * Read the file, ignoring comments, and honoring #include
+    * statements, unless we're already called recursively.
+    *
+    * FIXME: The comment handling could break with lines >BUFFER_SIZE long.
+    *        This is unlikely in practise.
+    */
+   while (fgets(buf, BUFFER_SIZE, fp))
+   {
+      if (!recursive && !strncmp(buf, "#include ", 9))
+      {
+         if (JB_ERR_OK != (err = template_load(csp, &included_module, chomp(buf + 9), 1)))
+         {
+            free(file_buffer);
+            fclose(fp);
+            return err;
+         }
+
+         if (string_join(&file_buffer, included_module))
+         {
+            fclose(fp);
+            return JB_ERR_MEMORY;
+         }
+
+         continue;
+      }
+
+      /* skip lines starting with '#' */
+      if (*buf == '#')
+      {
+         continue;
+      }
+
+      if (string_append(&file_buffer, buf))
+      {
+         fclose(fp);
+         return JB_ERR_MEMORY;
+      }
+   }
+   fclose(fp);
+
+   *template_ptr = file_buffer;
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  template_fill
+ *
+ * Description :  CGI support function that fills in a pre-loaded
+ *                HTML template by replacing @name@ with value using
+ *                pcrs, for each item in the output map.
+ *
+ *                Note that a leading '$' charachter in the export map's
+ *                values will be stripped and toggle on backreference
+ *                interpretation.
+ *
+ * Parameters  :
+ *          1  :  template_ptr = IN: Template to be filled out.
+ *                                   Will be free()d.
+ *                               OUT: Filled out template.
+ *                                    Caller must free().
+ *          2  :  exports = map with fill in symbol -> name pairs
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error
+ *
+ *********************************************************************/
+jb_err template_fill(char **template_ptr, const struct map *exports)
+{
+   struct map_entry *m;
+   pcrs_job *job;
+   char buf[BUFFER_SIZE];
+   char *tmp_out_buffer;
+   char *file_buffer;
+   size_t  size;
+   int error;
+   const char *flags;
+
+   assert(template_ptr);
+   assert(*template_ptr);
+   assert(exports);
+
+   file_buffer = *template_ptr;
+   size = strlen(file_buffer) + 1;
+
+   /* 
+    * Assemble pcrs joblist from exports map
+    */
+   for (m = exports->first; m != NULL; m = m->next)
+   {
+      if (*m->name == '$')
+      {
+         /*
+          * First character of name is '$', so remove this flag
+          * character and allow backreferences ($1 etc) in the
+          * "replace with" text.
+          */
+         snprintf(buf, BUFFER_SIZE, "%s", m->name + 1);
+         flags = "sigU";
+      }
+      else
+      {
+         /*
+          * Treat the "replace with" text as a literal string - 
+          * no quoting needed, no backreferences allowed.
+          * ("Trivial" ['T'] flag).
+          */
+         flags = "sigTU";
+
+         /* Enclose name in @@ */
+         snprintf(buf, BUFFER_SIZE, "@%s@", m->name);
+      }
+
+
+      log_error(LOG_LEVEL_CGI, "Substituting: s/%s/%s/%s", buf, m->value, flags);
+
+      /* Make and run job. */
+      job = pcrs_compile(buf, m->value, flags,  &error);
+      if (job == NULL) 
+      {
+         if (error == PCRS_ERR_NOMEM)
+         {
+            free(file_buffer);
+            *template_ptr = NULL;
+            return JB_ERR_MEMORY;
+         }
+         else
+         {
+            log_error(LOG_LEVEL_ERROR, "Error compiling template fill job %s: %d", m->name, error);
+            /* Hope it wasn't important and silently ignore the invalid job */
+         }
+      }
+      else
+      {
+         pcrs_execute(job, file_buffer, size, &tmp_out_buffer, &size);
+         free(file_buffer);
+         pcrs_free_job(job);
+         if (NULL == tmp_out_buffer)
+         {
+            *template_ptr = NULL;
+            return JB_ERR_MEMORY;
+         }
+         file_buffer = tmp_out_buffer;
+      }
+   }
+
+   /*
+    * Return
+    */
+   *template_ptr = file_buffer;
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  template_fill_for_cgi
+ *
+ * Description :  CGI support function that loads a HTML template
+ *                and fills it in.  Handles file-not-found errors
+ *                by sending a HTML error message.  For convenience,
+ *                this function also frees the passed "exports" map.
+ *
+ * Parameters  :
+ *          1  :  csp = Client state
+ *          2  :  templatename = name of the HTML template to be used
+ *          3  :  exports = map with fill in symbol -> name pairs.
+ *                          Will be freed by this function.
+ *          4  :  rsp = Response structure to fill in.
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error
+ *
+ *********************************************************************/
+jb_err template_fill_for_cgi(struct client_state *csp,
+                             const char *templatename,
+                             struct map *exports,
+                             struct http_response *rsp)
+{
+   jb_err err;
+   
+   assert(csp);
+   assert(templatename);
+   assert(exports);
+   assert(rsp);
+
+   err = template_load(csp, &rsp->body, templatename, 0);
+   if (err == JB_ERR_FILE)
+   {
+      free_map(exports);
+      return cgi_error_no_template(csp, rsp, templatename);
+   }
+   else if (err)
+   {
+      free_map(exports);
+      return err; /* JB_ERR_MEMORY */
+   }
+   err = template_fill(&rsp->body, exports);
+   free_map(exports);
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  default_exports
+ *
+ * Description :  returns a struct map list that contains exports
+ *                which are common to all CGI functions.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  caller = name of CGI who calls us and which should
+ *                         be excluded from the generated menu. May be
+ *                         NULL.
+ * Returns     :  NULL if no memory, else a new map.  Caller frees.
+ *
+ *********************************************************************/
+struct map *default_exports(const struct client_state *csp, const char *caller)
+{
+   char buf[20];
+   jb_err err;
+   struct map * exports;
+   int local_help_exists = 0;
+
+   assert(csp);
+
+   exports = new_map();
+   if (exports == NULL)
+   {
+      return NULL;
+   }
+
+   err = map(exports, "version", 1, html_encode(VERSION), 0);
+   if (!err) err = map(exports, "my-ip-address", 1, html_encode(csp->my_ip_addr_str ? csp->my_ip_addr_str : "unknown"), 0);
+   if (!err) err = map(exports, "my-hostname",   1, html_encode(csp->my_hostname ? csp->my_hostname : "unknown"), 0);
+   if (!err) err = map(exports, "homepage",      1, html_encode(HOME_PAGE_URL), 0);
+   if (!err) err = map(exports, "default-cgi",   1, html_encode(CGI_PREFIX), 0);
+   if (!err) err = map(exports, "menu",          1, make_menu(caller), 0);
+   if (!err) err = map(exports, "code-status",   1, CODE_STATUS, 1);
+   if (!err) err = map(exports, "user-manual",   1, csp->config->usermanual ,1);
+   if (!err) err = map(exports, "actions-help-prefix", 1, ACTIONS_HELP_PREFIX ,1);
+   if (!err) err = map_conditional(exports, "enabled-display", g_bToggleIJB);
+
+   snprintf(buf, 20, "%d", csp->config->hport);
+   if (!err) err = map(exports, "my-port", 1, buf, 1);
+
+   if(!strcmp(CODE_STATUS, "stable"))
+   {
+      if (!err) err = map_block_killer(exports, "unstable");
+   }
+
+   if (csp->config->admin_address != NULL)
+   {
+      if (!err) err = map(exports, "admin-address", 1, html_encode(csp->config->admin_address), 0);
+      local_help_exists = 1;
+   }
+   else
+   {
+      if (!err) err = map_block_killer(exports, "have-adminaddr-info");
+   }
+
+   if (csp->config->proxy_info_url != NULL)
+   {
+      if (!err) err = map(exports, "proxy-info-url", 1, html_encode(csp->config->proxy_info_url), 0);
+      local_help_exists = 1;
+   }
+   else
+   {
+      if (!err) err = map_block_killer(exports, "have-proxy-info");
+   }
+
+   if (local_help_exists == 0)
+   {
+      if (!err) err = map_block_killer(exports, "have-help-info");
+   }
+
+   if (err)
+   {
+      free_map(exports);
+      return NULL;
+   }
+
+   return exports;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  map_block_killer
+ *
+ * Description :  Convenience function.
+ *                Adds a "killer" for the conditional HTML-template
+ *                block <name>, i.e. a substitution of the regex
+ *                "if-<name>-start.*if-<name>-end" to the given
+ *                export list.
+ *
+ * Parameters  :  
+ *          1  :  exports = map to extend
+ *          2  :  name = name of conditional block
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err map_block_killer(struct map *exports, const char *name)
+{
+   char buf[1000]; /* Will do, since the names are hardwired */
+
+   assert(exports);
+   assert(name);
+   assert(strlen(name) < 490);
+
+   snprintf(buf, 1000, "if-%s-start.*if-%s-end", name, name);
+   return map(exports, buf, 1, "", 1);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  map_block_keep
+ *
+ * Description :  Convenience function.  Removes the markers used
+ *                by map-block-killer, to save a few bytes.
+ *                i.e. removes "@if-<name>-start@" and "@if-<name>-end@"
+ *
+ * Parameters  :  
+ *          1  :  exports = map to extend
+ *          2  :  name = name of conditional block
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err map_block_keep(struct map *exports, const char *name)
+{
+   jb_err err;
+   char buf[500]; /* Will do, since the names are hardwired */
+
+   assert(exports);
+   assert(name);
+   assert(strlen(name) < 490);
+
+   snprintf(buf, 500, "if-%s-start", name);
+   err = map(exports, buf, 1, "", 1);
+
+   if (err)
+   {
+      return err;
+   }
+
+   snprintf(buf, 500, "if-%s-end", name);
+   return map(exports, buf, 1, "", 1);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  map_conditional
+ *
+ * Description :  Convenience function.
+ *                Adds an "if-then-else" for the conditional HTML-template
+ *                block <name>, i.e. a substitution of the form:
+ *                @if-<name>-then@
+ *                   True text
+ *                @else-not-<name>@
+ *                   False text
+ *                @endif-<name>@
+ *
+ *                The control structure and one of the alternatives
+ *                will be hidden.
+ *
+ * Parameters  :  
+ *          1  :  exports = map to extend
+ *          2  :  name = name of conditional block
+ *          3  :  choose_first = nonzero for first, zero for second.
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.  
+ *
+ *********************************************************************/
+jb_err map_conditional(struct map *exports, const char *name, int choose_first)
+{
+   char buf[1000]; /* Will do, since the names are hardwired */
+   jb_err err;
+
+   assert(exports);
+   assert(name);
+   assert(strlen(name) < 480);
+
+   snprintf(buf, 1000, (choose_first
+      ? "else-not-%s@.*@endif-%s"
+      : "if-%s-then@.*@else-not-%s"),
+      name, name);
+
+   err = map(exports, buf, 1, "", 1);
+   if (err)
+   {
+      return err;
+   }
+
+   snprintf(buf, 1000, (choose_first ? "if-%s-then" : "endif-%s"), name);
+   return map(exports, buf, 1, "", 1);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  make_menu
+ *
+ * Description :  Returns an HTML-formatted menu of the available 
+ *                unhidden CGIs, excluding the one given in <self>
+ *
+ * Parameters  :  self = name of CGI to leave out, can be NULL for
+ *                complete listing.
+ *
+ * Returns     :  menu string, or NULL on out-of-memory error.
+ *
+ *********************************************************************/
+char *make_menu(const char *self)
+{
+   const struct cgi_dispatcher *d;
+   char *result = strdup("");
+
+   if (self == NULL)
+   {
+      self = "NO-SUCH-CGI!";
+   }
+
+   /* List available unhidden CGI's and export as "other-cgis" */
+   for (d = cgi_dispatchers; d->name; d++)
+   {
+      if (d->description && strcmp(d->name, self))
+      {
+         string_append(&result, "<li><a href=\"" CGI_PREFIX);
+         string_append(&result, d->name);
+         string_append(&result, "\">");
+         string_append(&result, d->description);
+         string_append(&result, "</a></li>");
+      }
+   }
+
+   return result;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  dump_map
+ *
+ * Description :  HTML-dump a map for debugging (as table)
+ *
+ * Parameters  :
+ *          1  :  the_map = map to dump
+ *
+ * Returns     :  string with HTML
+ *
+ *********************************************************************/
+char *dump_map(const struct map *the_map)
+{
+   struct map_entry *cur_entry;
+   char *ret = strdup("");
+
+   string_append(&ret, "<table>\n");
+
+   for (cur_entry = the_map->first;
+        (cur_entry != NULL) && (ret != NULL);
+        cur_entry = cur_entry->next)
+   {
+      string_append(&ret, "<tr><td><b>");
+      string_join  (&ret, html_encode(cur_entry->name));
+      string_append(&ret, "</b></td><td>");
+      string_join  (&ret, html_encode(cur_entry->value));
+      string_append(&ret, "</td></tr>\n");
+   }
+
+   string_append(&ret, "</table>\n");
+   return ret;
+}
+
+
+/*
+  Local Variables:
+  tab-width: 3
+  end:
+*/
diff --git a/src/cgi.h b/src/cgi.h
new file mode 100644 (file)
index 0000000..813d1e8
--- /dev/null
+++ b/src/cgi.h
@@ -0,0 +1,257 @@
+#ifndef CGI_H_INCLUDED
+#define CGI_H_INCLUDED
+#define CGI_H_VERSION "$Id: cgi.h,v 1.29 2002/05/19 11:33:21 jongfoster Exp $"
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/cgi.h,v $
+ *
+ * Purpose     :  Declares functions to intercept request, generate
+ *                html or gif answers, and to compose HTTP resonses.
+ *                
+ *                Functions declared include:
+ * 
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and 
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it 
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: cgi.h,v $
+ *    Revision 1.29  2002/05/19 11:33:21  jongfoster
+ *    If a CGI error was not handled, and propogated back to
+ *    dispatch_known_cgi(), then it was assumed to be "out of memory".
+ *    This gave a very misleading error message.
+ *
+ *    Now other errors will cause a simple message giving the error
+ *    number and asking the user to report a bug.
+ *
+ *    Bug report:
+ *    http://sourceforge.net/tracker/index.php?func=detail
+ *    &aid=557905&group_id=11118&atid=111118
+ *
+ *    Revision 1.28  2002/04/26 12:54:03  oes
+ *    New function add_help_link
+ *
+ *    Revision 1.27  2002/04/24 02:16:51  oes
+ *    Moved get_char_param, get_string_param and get_number_param here from cgiedit.c
+ *
+ *    Revision 1.26  2002/04/10 13:38:35  oes
+ *    load_template signature changed
+ *
+ *    Revision 1.25  2002/04/08 20:50:25  swa
+ *    fixed JB spelling
+ *
+ *    Revision 1.24  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.23  2002/03/24 16:18:15  jongfoster
+ *    Removing old logo
+ *
+ *    Revision 1.22  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.21  2002/03/07 03:48:38  oes
+ *     - Changed built-in images from GIF to PNG
+ *       (with regard to Unisys patent issue)
+ *     - Added a 4x4 pattern PNG which is less intrusive
+ *       than the logo but also clearly marks the deleted banners
+ *
+ *    Revision 1.20  2002/03/04 17:53:22  oes
+ *    Fixed compiled warning
+ *
+ *    Revision 1.19  2002/01/21 00:33:52  jongfoster
+ *    Adding map_block_keep() to save a few bytes in the edit-actions-list HTML.
+ *
+ *    Revision 1.18  2001/11/16 00:46:31  jongfoster
+ *    Fixing compiler warnings
+ *
+ *    Revision 1.17  2001/10/23 21:48:19  jongfoster
+ *    Cleaning up error handling in CGI functions - they now send back
+ *    a HTML error page and should never cause a FATAL error.  (Fixes one
+ *    potential source of "denial of service" attacks).
+ *
+ *    CGI actions file editor that works and is actually useful.
+ *
+ *    Ability to toggle Junkbuster remotely using a CGI call.
+ *
+ *    You can turn off both the above features in the main configuration
+ *    file, e.g. if you are running a multi-user proxy.
+ *
+ *    Revision 1.16  2001/09/16 17:08:54  jongfoster
+ *    Moving simple CGI functions from cgi.c to new file cgisimple.c
+ *
+ *    Revision 1.15  2001/09/16 15:02:35  jongfoster
+ *    Adding i.j.b/robots.txt.
+ *    Inlining add_stats() since it's only ever called from one place.
+ *
+ *    Revision 1.14  2001/09/16 11:38:02  jongfoster
+ *    Splitting fill_template() into 2 functions:
+ *    template_load() loads the file
+ *    template_fill() performs the PCRS regexps.
+ *    This is because the CGI edit interface has a "table row"
+ *    template which is used many times in the page - this
+ *    change means it's only loaded from disk once.
+ *
+ *    Revision 1.13  2001/09/16 11:00:10  jongfoster
+ *    New function alloc_http_response, for symmetry with free_http_response
+ *
+ *    Revision 1.12  2001/09/13 23:31:25  jongfoster
+ *    Moving image data to cgi.c rather than cgi.h.
+ *
+ *    Revision 1.11  2001/08/05 16:06:20  jongfoster
+ *    Modifiying "struct map" so that there are now separate header and
+ *    "map_entry" structures.  This means that functions which modify a
+ *    map no longer need to return a pointer to the modified map.
+ *    Also, it no longer reverses the order of the entries (which may be
+ *    important with some advanced template substitutions).
+ *
+ *    Revision 1.10  2001/08/01 21:19:22  jongfoster
+ *    Moving file version information to a separate CGI page.
+ *
+ *    Revision 1.9  2001/08/01 00:17:54  jongfoster
+ *    Adding prototype for map_conditional
+ *
+ *    Revision 1.8  2001/07/30 22:08:36  jongfoster
+ *    Tidying up #defines:
+ *    - All feature #defines are now of the form FEATURE_xxx
+ *    - Permanently turned off WIN_GUI_EDIT
+ *    - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
+ *
+ *    Revision 1.7  2001/07/29 18:43:08  jongfoster
+ *    Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
+ *    ANSI C rules.
+ *
+ *    Revision 1.6  2001/06/29 21:45:41  oes
+ *    Indentation, CRLF->LF, Tab-> Space
+ *
+ *    Revision 1.5  2001/06/29 13:22:44  oes
+ *    - Cleaned up
+ *    - Added new functions: default_exports(), make_menu(),
+ *      error_response() etc, ranamed others and changed
+ *      param and return types.
+ *    - Removed HTTP/HTML snipplets
+ *    - Removed logentry from cancelled commit
+ *
+ *    Revision 1.4  2001/06/09 10:50:58  jongfoster
+ *    Changing "show URL info" handler to new style.
+ *    Adding "extern" to some function prototypes.
+ *
+ *    Revision 1.3  2001/06/03 19:12:16  oes
+ *    introduced new cgi handling
+ *
+ *    No revisions before 1.3
+ *
+ **********************************************************************/
+\f
+
+#include "project.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Main dispatch function
+ */
+extern struct http_response *dispatch_cgi(struct client_state *csp);
+
+/* Not exactly a CGI */
+extern struct http_response * error_response(struct client_state *csp,
+                                             const char *templatename,
+                                             int err);
+
+/*
+ * CGI support functions
+ */
+extern struct http_response * alloc_http_response(void);
+extern void free_http_response(struct http_response *rsp);
+
+extern struct http_response *finish_http_response(struct http_response *rsp);
+
+extern struct map * default_exports(const struct client_state *csp, const char *caller);
+
+extern jb_err map_block_killer (struct map *exports, const char *name);
+extern jb_err map_block_keep   (struct map *exports, const char *name);
+extern jb_err map_conditional  (struct map *exports, const char *name, int choose_first);
+
+extern jb_err template_load(struct client_state *csp, char ** template_ptr, 
+                            const char *templatename, int recursive);
+extern jb_err template_fill(char ** template_ptr, const struct map *exports);
+extern jb_err template_fill_for_cgi(struct client_state *csp,
+                                    const char *templatename,
+                                    struct map *exports,
+                                    struct http_response *rsp);
+
+extern void cgi_init_error_messages(void);
+extern struct http_response *cgi_error_memory(void);
+extern jb_err cgi_error_no_template(struct client_state *csp,
+                                    struct http_response *rsp,
+                                    const char *template_name);
+extern jb_err cgi_error_bad_param(struct client_state *csp,
+                                  struct http_response *rsp);
+jb_err cgi_error_unknown(struct client_state *csp,
+                         struct http_response *rsp,
+                         jb_err error_to_report);
+
+extern jb_err get_number_param(struct client_state *csp,
+                               const struct map *parameters,
+                               char *name,
+                               unsigned *pvalue);
+extern jb_err get_string_param(const struct map *parameters,
+                               const char *param_name,
+                               const char **pparam);
+extern char   get_char_param(const struct map *parameters,
+                             const char *param_name);
+
+/*
+ * Text generators
+ */
+extern void get_http_time(int time_offset, char * buf);
+extern char *add_help_link(const char *item, struct configuration_spec *config);
+extern char *make_menu(const char *self);
+extern char *dump_map(const struct map *the_map);
+
+/*
+ * Ad replacement images
+ */
+extern const char image_pattern_data[];
+extern const size_t  image_pattern_length;
+extern const char image_blank_data[];
+extern const size_t  image_blank_length;
+
+/* Revision control strings from this header and associated .c file */
+extern const char cgi_rcs[];
+extern const char cgi_h_rcs[];
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* ndef CGI_H_INCLUDED */
+
+/*
+  Local Variables:
+  tab-width: 3
+  end:
+*/
diff --git a/src/cgiedit.c b/src/cgiedit.c
new file mode 100644 (file)
index 0000000..8630263
--- /dev/null
@@ -0,0 +1,4715 @@
+const char cgiedit_rcs[] = "$Id: cgiedit.c,v 1.41 2002/05/21 19:09:45 oes Exp $";
+/*********************************************************************
+ *
+ * File        :  $Source: /cvsroot/ijbswa/current/cgiedit.c,v $
+ *
+ * Purpose     :  CGI-based actionsfile editor.
+ *
+ *                Functions declared include: cgi_edit_*
+ *
+ *                NOTE: The CGIs in this file use parameter names
+ *                such as "f" and "s" which are really *BAD* choices.
+ *                However, I'm trying to save bytes in the
+ *                edit-actions-list HTML page - the standard actions
+ *                file generated a 550kbyte page, which is ridiculous.
+ *
+ *                Stick to the short names in this file for consistency.
+ *
+ * Copyright   :  Written by and Copyright (C) 2001 the SourceForge
+ *                Privoxy team. http://www.privoxy.org/
+ *
+ *                Based on the Internet Junkbuster originally written
+ *                by and Copyright (C) 1997 Anonymous Coders and
+ *                Junkbusters Corporation.  http://www.junkbusters.com
+ *
+ *                This program is free software; you can redistribute it
+ *                and/or modify it under the terms of the GNU General
+ *                Public License as published by the Free Software
+ *                Foundation; either version 2 of the License, or (at
+ *                your option) any later version.
+ *
+ *                This program is distributed in the hope that it will
+ *                be useful, but WITHOUT ANY WARRANTY; without even the
+ *                implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public
+ *                License for more details.
+ *
+ *                The GNU General Public License should be included with
+ *                this file.  If not, you can view it at
+ *                http://www.gnu.org/copyleft/gpl.html
+ *                or write to the Free Software Foundation, Inc., 59
+ *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Revisions   :
+ *    $Log: cgiedit.c,v $
+ *    Revision 1.41  2002/05/21 19:09:45  oes
+ *     - Made Add/Edit/Remove URL Submit and Cancel
+ *       buttons jump back to relevant section in eal
+ *     - Bugfix: remove-url-form needs p export
+ *
+ *    Revision 1.40  2002/05/19 11:34:35  jongfoster
+ *    Handling read-only actions files better - report the actual
+ *    error, not "Out of memory"!
+ *
+ *    Bug report:
+ *    http://sourceforge.net/tracker/index.php?func=detail
+ *    &aid=557905&group_id=11118&atid=111118
+ *
+ *    Revision 1.39  2002/05/12 21:39:15  jongfoster
+ *    - Adding Doxygen-style comments to structures and #defines.
+ *    - Correcting function comments
+ *
+ *    Revision 1.38  2002/05/03 23:00:38  jongfoster
+ *    Support for templates for "standard actions" buttons.
+ *    See bug #549871
+ *
+ *    Revision 1.37  2002/04/30 11:14:52  oes
+ *    Made csp the first parameter in *action_to_html
+ *
+ *    Revision 1.36  2002/04/26 21:53:30  jongfoster
+ *    Fixing a memory leak.  (Near, but not caused by, my earlier commit).
+ *
+ *    Revision 1.35  2002/04/26 21:50:02  jongfoster
+ *    Honouring default exports in edit-actions-for-url-filter template.
+ *
+ *    Revision 1.34  2002/04/26 12:54:17  oes
+ *    Adaptions to changes in actions.c
+ *
+ *    Revision 1.33  2002/04/24 02:17:47  oes
+ *     - Moved get_char_param, get_string_param and get_number_param to cgi.c
+ *     - Comments
+ *     - Activated Jon's code for editing multiple AFs
+ *     - cgi_edit_list_actions now provides context-sensitive
+ *       help, looks up all action sets from standard.action and
+ *       makes buttons for them in the catchall section
+ *     - cgi_edit_action_submit now honors a p parameter, looks up
+ *       the corresponding action set, and sets the catchall pattern's
+ *       actions accordingly.
+ *
+ *    Revision 1.32  2002/04/19 16:55:31  jongfoster
+ *    Fixing newline problems.  If we do our own text file newline
+ *    mangling, we don't want the library to do any, so we need to
+ *    open the files in *binary* mode.
+ *
+ *    Revision 1.31  2002/04/18 19:21:08  jongfoster
+ *    Added code to detect "conventional" action files, that start
+ *    with a set of actions for all URLs (the pattern "/").
+ *    These are special-cased in the "edit-actions-list" CGI, so
+ *    that a special UI can be written for them.
+ *
+ *    Revision 1.30  2002/04/10 13:38:35  oes
+ *    load_template signature changed
+ *
+ *    Revision 1.29  2002/04/08 16:59:08  oes
+ *    Fixed comment
+ *
+ *    Revision 1.28  2002/03/27 12:30:29  oes
+ *    Deleted unsused variable
+ *
+ *    Revision 1.27  2002/03/26 23:06:04  jongfoster
+ *    Removing duplicate @ifs on the toggle page
+ *
+ *    Revision 1.26  2002/03/26 22:59:17  jongfoster
+ *    Fixing /toggle to display status consistently.
+ *
+ *    Revision 1.25  2002/03/26 22:29:54  swa
+ *    we have a new homepage!
+ *
+ *    Revision 1.24  2002/03/24 15:23:33  jongfoster
+ *    Name changes
+ *
+ *    Revision 1.23  2002/03/24 13:32:41  swa
+ *    name change related issues
+ *
+ *    Revision 1.22  2002/03/24 13:25:43  swa
+ *    name change related issues
+ *
+ *    Revision 1.21  2002/03/22 18:02:48  jongfoster
+ *    Fixing remote toggle
+ *
+ *    Revision 1.20  2002/03/16 20:28:34  oes
+ *    Added descriptions to the filters so users will know what they select in the cgi editor
+ *
+ *    Revision 1.19  2002/03/16 18:38:14  jongfoster
+ *    Stopping stupid or malicious users from breaking the actions
+ *    file using the web-based editor.
+ *
+ *    Revision 1.18  2002/03/16 14:57:44  jongfoster
+ *    Full support for enabling/disabling modular filters.
+ *
+ *    Revision 1.17  2002/03/16 14:26:42  jongfoster
+ *    First version of modular filters support - READ ONLY!
+ *    Fixing a double-free bug in the out-of-memory handling in map_radio().
+ *
+ *    Revision 1.16  2002/03/07 03:46:17  oes
+ *    Fixed compiler warnings
+ *
+ *    Revision 1.15  2002/03/06 22:54:35  jongfoster
+ *    Automated function-comment nitpicking.
+ *
+ *    Revision 1.14  2002/03/05 00:24:51  jongfoster
+ *    Patch to always edit the current actions file.
+ *
+ *    Revision 1.13  2002/03/04 02:07:59  david__schmidt
+ *    Enable web editing of actions file on OS/2 (it had been broken all this time!)
+ *
+ *    Revision 1.12  2002/03/03 09:18:03  joergs
+ *    Made jumbjuster work on AmigaOS again.
+ *
+ *    Revision 1.11  2002/01/23 01:03:31  jongfoster
+ *    Fixing gcc [CygWin] compiler warnings
+ *
+ *    Revision 1.10  2002/01/23 00:22:59  jongfoster
+ *    Adding new function cgi_edit_actions_section_swap(), to reorder
+ *    the actions file.
+ *
+ *    Adding get_url_spec_param() to get a validated URL pattern.
+ *
+ *    Moving edit_read_line() out of this file and into loaders.c.
+ *
+ *    Adding missing html_encode() to many CGI functions.
+ *
+ *    Moving the functions that #include actionlist.h to the end of the file,
+ *    because the Visual C++ 97 debugger gets extremely confused if you try
+ *    to debug any code that comes after them in the file.
+ *
+ *    Major optimizations in cgi_edit_actions_list() to reduce the size of
+ *    the generated HTML (down 40% from 550k to 304k), with major side-effects
+ *    throughout the editor and templates.  In particular, the length of the
+ *    URLs throughout the editor has been drastically reduced, by cutting
+ *    paramater names down to 1 character and CGI names down to 3-4
+ *    characters, by removing all non-essential CGI paramaters even at the
+ *    expense of having to re-read the actions file for the most trivial
+ *    page, and by using relative rather than absolute URLs.  This means
+ *    that this (typical example):
+ *
+ *    <a href="http://ijbswa.sourceforge.net/config/edit-actions-url-form?
+ *    filename=ijb&amp;ver=1011487572&amp;section=12&amp;pattern=13
+ *    &amp;oldval=www.oesterhelt.org%2Fdeanimate-demo">
+ *
+ *    is now this:
+ *
+ *    <a href="eau?f=ijb&amp;v=1011487572&amp;p=13">
+ *
+ *    Revision 1.9  2002/01/17 20:56:22  jongfoster
+ *    Replacing hard references to the URL of the config interface
+ *    with #defines from project.h
+ *
+ *    Revision 1.8  2001/11/30 23:35:51  jongfoster
+ *    Renaming actionsfile to ijb.action
+ *
+ *    Revision 1.7  2001/11/13 00:28:24  jongfoster
+ *    - Renaming parameters from edit-actions-for-url so that they only
+ *      contain legal JavaScript characters.  If we wanted to write
+ *      JavaScript that worked with Netscape 4, this is nessacery.
+ *      (Note that at the moment the JavaScript doesn't actually work
+ *      with Netscape 4, but now this is purely a template issue, not
+ *      one affecting code).
+ *    - Adding new CGIs for use by non-JavaScript browsers:
+ *        edit-actions-url-form
+ *        edit-actions-add-url-form
+ *        edit-actions-remove-url-form
+ *    - Fixing || bug.
+ *
+ *    Revision 1.6  2001/10/29 03:48:09  david__schmidt
+ *    OS/2 native needed a snprintf() routine.  Added one to miscutil, brackedted
+ *    by and __OS2__ ifdef.
+ *
+ *    Revision 1.5  2001/10/25 03:40:48  david__schmidt
+ *    Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
+ *    threads to call select() simultaneously.  So, it's time to do a real, live,
+ *    native OS/2 port.  See defines for __EMX__ (the porting layer) vs. __OS2__
+ *    (native). Both versions will work, but using __OS2__ offers multi-threading.
+ *
+ *    Revision 1.4  2001/10/23 21:48:19  jongfoster
+ *    Cleaning up error handling in CGI functions - they now send back
+ *    a HTML error page and should never cause a FATAL error.  (Fixes one
+ *    potential source of "denial of service" attacks).
+ *
+ *    CGI actions file editor that works and is actually useful.
+ *
+ *    Ability to toggle JunkBuster remotely using a CGI call.
+ *
+ *    You can turn off both the above features in the main configuration
+ *    file, e.g. if you are running a multi-user proxy.
+ *
+ *    Revision 1.3  2001/10/14 22:12:49  jongfoster
+ *    New version of CGI-based actionsfile editor.
+ *    Major changes, including:
+ *    - Completely new file parser and file output routines
+ *    - edit-actions CGI renamed edit-actions-for-url
+ *    - All CGIs now need a filename parameter, except for...
+ *    - New CGI edit-actions which doesn't need a filename,
+ *      to allow you to start the editor up.
+ *    - edit-actions-submit now works, and now automatically
+ *      redirects you back to the main edit-actions-list handler.
+ *
+ *    Revision 1.2  2001/09/16 17:05:14  jongfoster
+ *    Removing unused #include showarg.h
+ *
+ *    Revision 1.1  2001/09/16 15:47:37  jongfoster
+ *    First version of CGI-based edit interface.  This is very much a
+ *    work-in-progress, and you can't actually use it to edit anything
+ *    yet.  You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
+ *    to have any effect.
+ *
+ *
+ **********************************************************************/
+\f
+
+#include "config.h"
+
+/*
+ * FIXME: Following includes copied from cgi.c - which are actually needed?
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <ctype.h>
+#include <string.h>
+#include <assert.h>
+#include <sys/stat.h>
+
+#ifdef _WIN32
+#define snprintf _snprintf
+#endif /* def _WIN32 */
+
+#include "project.h"
+#include "cgi.h"
+#include "cgiedit.h"
+#include "cgisimple.h"
+#include "list.h"
+#include "encode.h"
+#include "actions.h"
+#include "miscutil.h"
+#include "errlog.h"
+#include "loaders.h"
+#include "loadcfg.h"
+/* loadcfg.h is for g_bToggleIJB only */
+#include "urlmatch.h"
+
+const char cgiedit_h_rcs[] = CGIEDIT_H_VERSION;
+
+
+#ifdef FEATURE_CGI_EDIT_ACTIONS
+
+/**
+ * A line in an editable_file.
+ */
+struct file_line
+{
+   /** Next entry in the linked list */
+   struct file_line * next;
+   
+   /** The raw data, to write out if this line is unmodified. */
+   char * raw;
+   
+   /** Comments and/or whitespace to put before this line if it's modified
+       and then written out. */
+   char * prefix;
+
+   /** The actual data, as a string.  Line continuation and comment removal
+       are performed on the data read from file before it's stored here, so
+       it will be a single line of data.  */
+   char * unprocessed;
+   
+   /** The type of data on this line.  One of the FILE_LINE_xxx constants. */
+   int type;
+
+   /** The actual data, processed into some sensible data type. */
+   union
+   {
+
+      /** An action specification. */
+      struct action_spec action[1];
+
+      /** A name=value pair. */
+      struct
+      {
+
+         /** The name in the name=value pair. */
+         char * name;
+
+         /** The value in the name=value pair, as a string. */
+         char * svalue;
+
+         /** The value in the name=value pair, as an integer. */
+         int ivalue;
+
+      } setting;
+
+      /* Add more data types here... e.g.
+
+
+      struct url_spec url[1];
+
+      struct
+      {
+         struct action_spec action[1];
+         const char * name;
+      } alias;
+
+      */
+
+   } data;
+
+};
+
+/** This file_line has not been processed yet. */
+#define FILE_LINE_UNPROCESSED           1
+
+/** This file_line is blank. Can only appear at the end of a file, due to
+    the way the parser works. */
+#define FILE_LINE_BLANK                 2
+
+/** This file_line says {{alias}}. */
+#define FILE_LINE_ALIAS_HEADER          3
+
+/** This file_line defines an alias. */
+#define FILE_LINE_ALIAS_ENTRY           4
+
+/** This file_line defines an {action}. */
+#define FILE_LINE_ACTION                5
+
+/** This file_line specifies a URL pattern. */
+#define FILE_LINE_URL                   6
+
+/** This file_line says {{settings}}. */
+#define FILE_LINE_SETTINGS_HEADER       7
+
+/** This file_line is in a {{settings}} block. */
+#define FILE_LINE_SETTINGS_ENTRY        8
+
+/** This file_line says {{description}}. */
+#define FILE_LINE_DESCRIPTION_HEADER    9
+
+/** This file_line is in a {{description}} block. */
+#define FILE_LINE_DESCRIPTION_ENTRY    10
+
+
+/**
+ * A configuration file, in a format that can be edited and written back to
+ * disk.
+ */
+struct editable_file
+{
+   struct file_line * lines;  /**< The contents of the file.  A linked list of lines. */
+   const char * filename;     /**< Full pathname - e.g. "/etc/privoxy/wibble.action". */
+   const char * identifier;   /**< Filename stub - e.g. "wibble".  Use for CGI param. */
+                              /**< Pre-encoded with url_encode() for ease of use. */
+   const char * version_str;  /**< Last modification time, as a string.  For CGI param. */
+                              /**< Can be used in URL without using url_param(). */
+   unsigned version;          /**< Last modification time - prevents chaos with
+                                   the browser's "back" button.  Note that this is a
+                                   time_t cast to an unsigned.  When comparing, always
+                                   cast the time_t to an unsigned, and *NOT* vice-versa.
+                                   This may lose the top few bits, but they're not
+                                   significant anyway. */
+   int newline;               /**< Newline convention - one of the NEWLINE_xxx constants.
+                                   Note that changing this after the file has been
+                                   read in will cause a mess. */
+   struct file_line * parse_error; /**< On parse error, this is the offending line. */
+   const char * parse_error_text;  /**< On parse error, this is the problem.
+                                        (Statically allocated) */
+};
+
+/* FIXME: Following non-static functions should be prototyped in .h or made static */
+
+/* Functions to read and write arbitrary config files */
+jb_err edit_read_file(struct client_state *csp,
+                      const struct map *parameters,
+                      int require_version,
+                      const char *suffix,
+                      struct editable_file **pfile);
+jb_err edit_write_file(struct editable_file * file);
+void   edit_free_file(struct editable_file * file);
+
+/* Functions to read and write actions files */
+jb_err edit_parse_actions_file(struct editable_file * file);
+jb_err edit_read_actions_file(struct client_state *csp,
+                              struct http_response *rsp,
+                              const struct map *parameters,
+                              int require_version,
+                              struct editable_file **pfile);
+
+/* Error handlers */
+jb_err cgi_error_modified(struct client_state *csp,
+                          struct http_response *rsp,
+                          const char *filename);
+jb_err cgi_error_parse(struct client_state *csp,
+                       struct http_response *rsp,
+                       struct editable_file *file);
+jb_err cgi_error_file(struct client_state *csp,
+                      struct http_response *rsp,
+                      const char *filename);
+jb_err cgi_error_file_read_only(struct client_state *csp,
+                                struct http_response *rsp,
+                                const char *filename);
+jb_err cgi_error_disabled(struct client_state *csp,
+                          struct http_response *rsp);
+
+/* Internal arbitrary config file support functions */
+static jb_err edit_read_file_lines(FILE *fp, struct file_line ** pfile, int *newline);
+static void edit_free_file_lines(struct file_line * first_line);
+
+/* Internal actions file support functions */
+static int match_actions_file_header_line(const char * line, const char * name);
+static jb_err split_line_on_equals(const char * line, char ** pname, char ** pvalue);
+
+/* Internal parameter parsing functions */
+static jb_err get_file_name_param(struct client_state *csp,
+                                  const struct map *parameters,
+                                  const char *param_name,
+                                  const char *suffix,
+                                  char **pfilename,
+                                  const char **pparam);
+
+static jb_err get_url_spec_param(struct client_state *csp,
+                                 const struct map *parameters,
+                                 const char *name,
+                                 char **pvalue);
+
+
+/* Internal actionsfile <==> HTML conversion functions */
+static jb_err map_radio(struct map * exports,
+                        const char * optionname,
+                        const char * values,
+                        int value);
+static jb_err actions_to_radio(struct map * exports,
+                               const struct action_spec *action);
+static jb_err actions_from_radio(const struct map * parameters,
+                                 struct action_spec *action);
+
+
+static jb_err map_copy_parameter_html(struct map *out,
+                                      const struct map *in,
+                                      const char *name);
+#if 0 /* unused function */
+static jb_err map_copy_parameter_url(struct map *out,
+                                     const struct map *in,
+                                     const char *name);
+#endif /* unused function */
+
+/* Internal convenience functions */
+static char *section_target(const unsigned sectionid);
+
+/*********************************************************************
+ *
+ * Function    :  section_target
+ *
+ * Description :  Given an unsigned (section id) n, produce a dynamically
+ *                allocated string of the form #l<n>, for use in link
+ *                targets.
+ *
+ * Parameters  :
+ *          1  :  sectionid = start line number of section
+ *
+ * Returns     :  String with link target, or NULL if out of
+ *                memory
+ *
+ *********************************************************************/
+static char *section_target(const unsigned sectionid)
+{
+   char buf[30];
+
+   snprintf(buf, 30, "#l%d", sectionid);
+   return(strdup(buf));
+
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  map_copy_parameter_html
+ *
+ * Description :  Copy a CGI parameter from one map to another, HTML
+ *                encoding it.
+ *
+ * Parameters  :
+ *          1  :  out = target map
+ *          2  :  in = source map
+ *          3  :  name = name of cgi parameter to copy
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the parameter doesn't exist
+ *                                  in the source map
+ *
+ *********************************************************************/
+static jb_err map_copy_parameter_html(struct map *out,
+                                      const struct map *in,
+                                      const char *name)
+{
+   const char * value;
+   jb_err err;
+
+   assert(out);
+   assert(in);
+   assert(name);
+
+   value = lookup(in, name);
+   err = map(out, name, 1, html_encode(value), 0);
+
+   if (err)
+   {
+      /* Out of memory */
+      return err;
+   }
+   else if (*value == '\0')
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+   else
+   {
+      return JB_ERR_OK;
+   }
+}
+
+
+#if 0 /* unused function */
+/*********************************************************************
+ *
+ * Function    :  map_copy_parameter_url
+ *
+ * Description :  Copy a CGI parameter from one map to another, URL
+ *                encoding it.
+ *
+ * Parameters  :
+ *          1  :  out = target map
+ *          2  :  in = source map
+ *          3  :  name = name of cgi parameter to copy
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the parameter doesn't exist
+ *                                  in the source map
+ *
+ *********************************************************************/
+static jb_err map_copy_parameter_url(struct map *out,
+                                     const struct map *in,
+                                     const char *name)
+{
+   const char * value;
+   jb_err err;
+
+   assert(out);
+   assert(in);
+   assert(name);
+
+   value = lookup(in, name);
+   err = map(out, name, 1, url_encode(value), 0);
+
+   if (err)
+   {
+      /* Out of memory */
+      return err;
+   }
+   else if (*value == '\0')
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+   else
+   {
+      return JB_ERR_OK;
+   }
+}
+#endif /* 0 - unused function */
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_url_form
+ *
+ * Description :  CGI function that displays a form for
+ *                edit-actions-url
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           p : (pattern) Line number of pattern to edit
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_url_form(struct client_state *csp,
+                                 struct http_response *rsp,
+                                 const struct map *parameters)
+{
+   struct map * exports;
+   unsigned patternid;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   unsigned section_start_line_number = 0;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(parameters);
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "p", &patternid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   cur_line = file->lines;
+
+   for (line_number = 1; (cur_line != NULL) && (line_number < patternid); line_number++)
+   {
+      if (cur_line->type == FILE_LINE_ACTION)
+      {
+         section_start_line_number = line_number;
+      }
+      cur_line = cur_line->next;
+   }
+
+   if ( (cur_line == NULL)
+     || (line_number != patternid)
+     || (patternid < 1)
+     || (cur_line->type != FILE_LINE_URL))
+   {
+      /* Invalid "patternid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, file->identifier, 1);
+   if (!err) err = map(exports, "v", 1, file->version_str, 1);
+   if (!err) err = map(exports, "p", 1, url_encode(lookup(parameters, "p")), 0);
+   if (!err) err = map(exports, "u", 1, html_encode(cur_line->unprocessed), 0);
+   if (!err) err = map(exports, "jumptarget", 1, section_target(section_start_line_number), 0);
+
+   edit_free_file(file);
+
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "edit-actions-url-form", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_add_url_form
+ *
+ * Description :  CGI function that displays a form for
+ *                edit-actions-url
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           s : (section) Line number of section to edit
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_add_url_form(struct client_state *csp,
+                                     struct http_response *rsp,
+                                     const struct map *parameters)
+{
+   struct map *exports;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(parameters);
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   err = map_copy_parameter_html(exports, parameters, "f");
+   if (!err) err = map_copy_parameter_html(exports, parameters, "v");
+   if (!err) err = map_copy_parameter_html(exports, parameters, "s");
+
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "edit-actions-add-url-form", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_remove_url_form
+ *
+ * Description :  CGI function that displays a form for
+ *                edit-actions-url
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           p : (pattern) Line number of pattern to edit
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_remove_url_form(struct client_state *csp,
+                                     struct http_response *rsp,
+                                     const struct map *parameters)
+{
+   struct map * exports;
+   unsigned patternid;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   unsigned section_start_line_number = 0;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(parameters);
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "p", &patternid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   cur_line = file->lines;
+
+   for (line_number = 1; (cur_line != NULL) && (line_number < patternid); line_number++)
+   {
+      if (cur_line->type == FILE_LINE_ACTION)
+      {
+         section_start_line_number = line_number;
+      }      
+      cur_line = cur_line->next;
+   }
+
+   if ( (cur_line == NULL)
+     || (line_number != patternid)
+     || (patternid < 1)
+     || (cur_line->type != FILE_LINE_URL))
+   {
+      /* Invalid "patternid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, file->identifier, 1);
+   if (!err) err = map(exports, "v", 1, file->version_str, 1);
+   if (!err) err = map(exports, "p", 1, url_encode(lookup(parameters, "p")), 0);
+   if (!err) err = map(exports, "u", 1, html_encode(cur_line->unprocessed), 0);
+   if (!err) err = map(exports, "jumptarget", 1, section_target(section_start_line_number), 0);
+
+   edit_free_file(file);
+
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "edit-actions-remove-url-form", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_write_file
+ *
+ * Description :  Write a complete file to disk.
+ *
+ * Parameters  :
+ *          1  :  file = File to write.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_FILE   on error writing to file.
+ *                JB_ERR_MEMORY on out of memory
+ *
+ *********************************************************************/
+jb_err edit_write_file(struct editable_file * file)
+{
+   FILE * fp;
+   struct file_line * cur_line;
+   struct stat statbuf[1];
+   char version_buf[22]; /* 22 = ceil(log10(2^64)) + 2 = max number of
+                            digits in time_t, assuming this is a 64-bit
+                            machine, plus null terminator, plus one
+                            for paranoia */
+
+   assert(file);
+   assert(file->filename);
+
+   if (NULL == (fp = fopen(file->filename, "wb")))
+   {
+      return JB_ERR_FILE;
+   }
+
+   cur_line = file->lines;
+   while (cur_line != NULL)
+   {
+      if (cur_line->raw)
+      {
+         if (fputs(cur_line->raw, fp) < 0)
+         {
+            fclose(fp);
+            return JB_ERR_FILE;
+         }
+      }
+      else
+      {
+         if (cur_line->prefix)
+         {
+            if (fputs(cur_line->prefix, fp) < 0)
+            {
+               fclose(fp);
+               return JB_ERR_FILE;
+            }
+         }
+         if (cur_line->unprocessed)
+         {
+
+            if (NULL != strchr(cur_line->unprocessed, '#'))
+            {
+               /* Must quote '#' characters */
+               int numhash = 0;
+               int len;
+               char * src;
+               char * dest;
+               char * str;
+
+               /* Count number of # characters, so we know length of output string */
+               src = cur_line->unprocessed;
+               while (NULL != (src = strchr(src, '#')))
+               {
+                  numhash++;
+                  src++;
+               }
+               assert(numhash > 0);
+
+               /* Allocate new memory for string */
+               len = strlen(cur_line->unprocessed);
+               if (NULL == (str = malloc((size_t) len + 1 + numhash)))
+               {
+                  /* Uh oh, just trashed file! */
+                  fclose(fp);
+                  return JB_ERR_MEMORY;
+               }
+
+               /* Loop through string from end */
+               src  = cur_line->unprocessed + len;
+               dest = str + len + numhash;
+               for ( ; len >= 0; len--)
+               {
+                  if ((*dest-- = *src--) == '#')
+                  {
+                     *dest-- = '\\';
+                     numhash--;
+                     assert(numhash >= 0);
+                  }
+               }
+               assert(numhash == 0);
+               assert(src  + 1 == cur_line->unprocessed);
+               assert(dest + 1 == str);
+
+               if (fputs(str, fp) < 0)
+               {
+                  free(str);
+                  fclose(fp);
+                  return JB_ERR_FILE;
+               }
+
+               free(str);
+            }
+            else
+            {
+               /* Can write without quoting '#' characters. */
+               if (fputs(cur_line->unprocessed, fp) < 0)
+               {
+                  fclose(fp);
+                  return JB_ERR_FILE;
+               }
+            }
+            if (fputs(NEWLINE(file->newline), fp) < 0)
+            {
+               fclose(fp);
+               return JB_ERR_FILE;
+            }
+         }
+         else
+         {
+            /* FIXME: Write data from file->data->whatever */
+            assert(0);
+         }
+      }
+      cur_line = cur_line->next;
+   }
+
+   fclose(fp);
+
+
+   /* Update the version stamp in the file structure, since we just
+    * wrote to the file & changed it's date.
+    */
+   if (stat(file->filename, statbuf) < 0)
+   {
+      /* Error, probably file not found. */
+      return JB_ERR_FILE;
+   }
+   file->version = (unsigned)statbuf->st_mtime;
+
+   /* Correct file->version_str */
+   freez(file->version_str);
+   snprintf(version_buf, 22, "%u", file->version);
+   version_buf[21] = '\0';
+   file->version_str = strdup(version_buf);
+   if (version_buf == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_free_file
+ *
+ * Description :  Free a complete file in memory.
+ *
+ * Parameters  :
+ *          1  :  file = Data structure to free.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+void edit_free_file(struct editable_file * file)
+{
+   if (!file)
+   {
+      /* Silently ignore NULL pointer */
+      return;
+   }
+
+   edit_free_file_lines(file->lines);
+   freez(file->filename);
+   freez(file->identifier);
+   freez(file->version_str);
+   file->version = 0;
+   file->parse_error_text = NULL; /* Statically allocated */
+   file->parse_error = NULL;
+
+   free(file);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_free_file_lines
+ *
+ * Description :  Free an entire linked list of file lines.
+ *
+ * Parameters  :
+ *          1  :  first_line = Data structure to free.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+static void edit_free_file_lines(struct file_line * first_line)
+{
+   struct file_line * next_line;
+
+   while (first_line != NULL)
+   {
+      next_line = first_line->next;
+      first_line->next = NULL;
+      freez(first_line->raw);
+      freez(first_line->prefix);
+      freez(first_line->unprocessed);
+      switch(first_line->type)
+      {
+         case 0: /* special case if memory zeroed */
+         case FILE_LINE_UNPROCESSED:
+         case FILE_LINE_BLANK:
+         case FILE_LINE_ALIAS_HEADER:
+         case FILE_LINE_SETTINGS_HEADER:
+         case FILE_LINE_DESCRIPTION_HEADER:
+         case FILE_LINE_DESCRIPTION_ENTRY:
+         case FILE_LINE_ALIAS_ENTRY:
+         case FILE_LINE_URL:
+            /* No data is stored for these */
+            break;
+
+         case FILE_LINE_ACTION:
+            free_action(first_line->data.action);
+            break;
+
+         case FILE_LINE_SETTINGS_ENTRY:
+            freez(first_line->data.setting.name);
+            freez(first_line->data.setting.svalue);
+            break;
+         default:
+            /* Should never happen */
+            assert(0);
+            break;
+      }
+      first_line->type = 0; /* paranoia */
+      free(first_line);
+      first_line = next_line;
+   }
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  match_actions_file_header_line
+ *
+ * Description :  Match an actions file {{header}} line
+ *
+ * Parameters  :
+ *          1  :  line = String from file
+ *          2  :  name = Header to match against
+ *
+ * Returns     :  0 iff they match.
+ *
+ *********************************************************************/
+static int match_actions_file_header_line(const char * line, const char * name)
+{
+   size_t len;
+
+   assert(line);
+   assert(name);
+
+   /* Look for "{{" */
+   if ((line[0] != '{') || (line[1] != '{'))
+   {
+      return 1;
+   }
+   line += 2;
+
+   /* Look for optional whitespace */
+   while ( (*line == ' ') || (*line == '\t') )
+   {
+      line++;
+   }
+
+   /* Look for the specified name (case-insensitive) */
+   len = strlen(name);
+   if (0 != strncmpic(line, name, len))
+   {
+      return 1;
+   }
+   line += len;
+
+   /* Look for optional whitespace */
+   while ( (*line == ' ') || (*line == '\t') )
+   {
+      line++;
+   }
+
+   /* Look for "}}" and end of string*/
+   if ((line[0] != '}') || (line[1] != '}') || (line[2] != '\0'))
+   {
+      return 1;
+   }
+
+   /* It matched!! */
+   return 0;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  match_actions_file_header_line
+ *
+ * Description :  Match an actions file {{header}} line
+ *
+ * Parameters  :
+ *          1  :  line = String from file.  Must not start with
+ *                       whitespace (else infinite loop!)
+ *          2  :  pname = Destination for name
+ *          2  :  pvalue = Destination for value
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_PARSE  if there's no "=" sign, or if there's
+ *                              nothing before the "=" sign (but empty
+ *                              values *after* the "=" sign are legal).
+ *
+ *********************************************************************/
+static jb_err split_line_on_equals(const char * line, char ** pname, char ** pvalue)
+{
+   const char * name_end;
+   const char * value_start;
+   size_t name_len;
+
+   assert(line);
+   assert(pname);
+   assert(pvalue);
+   assert(*line != ' ');
+   assert(*line != '\t');
+
+   *pname = NULL;
+   *pvalue = NULL;
+
+   value_start = strchr(line, '=');
+   if ((value_start == NULL) || (value_start == line))
+   {
+      return JB_ERR_PARSE;
+   }
+
+   name_end = value_start - 1;
+
+   /* Eat any whitespace before the '=' */
+   while ((*name_end == ' ') || (*name_end == '\t'))
+   {
+      /*
+       * we already know we must have at least 1 non-ws char
+       * at start of buf - no need to check
+       */
+      name_end--;
+   }
+
+   name_len = name_end - line + 1; /* Length excluding \0 */
+   if (NULL == (*pname = (char *) malloc(name_len + 1)))
+   {
+      return JB_ERR_MEMORY;
+   }
+   strncpy(*pname, line, name_len);
+   (*pname)[name_len] = '\0';
+
+   /* Eat any the whitespace after the '=' */
+   value_start++;
+   while ((*value_start == ' ') || (*value_start == '\t'))
+   {
+      value_start++;
+   }
+
+   if (NULL == (*pvalue = strdup(value_start)))
+   {
+      free(*pname);
+      *pname = NULL;
+      return JB_ERR_MEMORY;
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_parse_actions_file
+ *
+ * Description :  Parse an actions file in memory.
+ *
+ *                Passed linked list must have the "data" member
+ *                zeroed, and must contain valid "next" and
+ *                "unprocessed" fields.  The "raw" and "prefix"
+ *                fields are ignored, and "type" is just overwritten.
+ *
+ *                Note that on error the file may have been
+ *                partially parsed.
+ *
+ * Parameters  :
+ *          1  :  file = Actions file to be parsed in-place.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_PARSE  on error
+ *
+ *********************************************************************/
+jb_err edit_parse_actions_file(struct editable_file * file)
+{
+   struct file_line * cur_line;
+   size_t len;
+   const char * text; /* Text from a line */
+   char * name;  /* For lines of the form name=value */
+   char * value; /* For lines of the form name=value */
+   struct action_alias * alias_list = NULL;
+   jb_err err = JB_ERR_OK;
+
+   /* alias_list contains the aliases defined in this file.
+    * It might be better to use the "file_line.data" fields
+    * in the relavent places instead.
+    */
+
+   cur_line = file->lines;
+
+   /* A note about blank line support: Blank lines should only
+    * ever occur as the last line in the file.  This function
+    * is more forgiving than that - FILE_LINE_BLANK can occur
+    * anywhere.
+    */
+
+   /* Skip leading blanks.  Should only happen if file is
+    * empty (which is valid, but pointless).
+    */
+   while ( (cur_line != NULL)
+        && (cur_line->unprocessed[0] == '\0') )
+   {
+      /* Blank line */
+      cur_line->type = FILE_LINE_BLANK;
+      cur_line = cur_line->next;
+   }
+
+   if ( (cur_line != NULL)
+     && (cur_line->unprocessed[0] != '{') )
+   {
+      /* File doesn't start with a header */
+      file->parse_error = cur_line;
+      file->parse_error_text = "First (non-comment) line of the file must contain a header.";
+      return JB_ERR_PARSE;
+   }
+
+   if ( (cur_line != NULL) && (0 ==
+      match_actions_file_header_line(cur_line->unprocessed, "settings") ) )
+   {
+      cur_line->type = FILE_LINE_SETTINGS_HEADER;
+
+      cur_line = cur_line->next;
+      while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
+      {
+         if (cur_line->unprocessed[0])
+         {
+            cur_line->type = FILE_LINE_SETTINGS_ENTRY;
+
+            err = split_line_on_equals(cur_line->unprocessed,
+                     &cur_line->data.setting.name,
+                     &cur_line->data.setting.svalue);
+            if (err == JB_ERR_MEMORY)
+            {
+               return err;
+            }
+            else if (err != JB_ERR_OK)
+            {
+               /* Line does not contain a name=value pair */
+               file->parse_error = cur_line;
+               file->parse_error_text = "Expected a name=value pair on this {{description}} line, but couldn't find one.";
+               return JB_ERR_PARSE;
+            }
+         }
+         else
+         {
+            cur_line->type = FILE_LINE_BLANK;
+         }
+         cur_line = cur_line->next;
+      }
+   }
+
+   if ( (cur_line != NULL) && (0 ==
+      match_actions_file_header_line(cur_line->unprocessed, "description") ) )
+   {
+      cur_line->type = FILE_LINE_DESCRIPTION_HEADER;
+
+      cur_line = cur_line->next;
+      while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
+      {
+         if (cur_line->unprocessed[0])
+         {
+            cur_line->type = FILE_LINE_DESCRIPTION_ENTRY;
+         }
+         else
+         {
+            cur_line->type = FILE_LINE_BLANK;
+         }
+         cur_line = cur_line->next;
+      }
+   }
+
+   if ( (cur_line != NULL) && (0 ==
+      match_actions_file_header_line(cur_line->unprocessed, "alias") ) )
+   {
+      cur_line->type = FILE_LINE_ALIAS_HEADER;
+
+      cur_line = cur_line->next;
+      while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
+      {
+         if (cur_line->unprocessed[0])
+         {
+            /* define an alias */
+            struct action_alias * new_alias;
+
+            cur_line->type = FILE_LINE_ALIAS_ENTRY;
+
+            err = split_line_on_equals(cur_line->unprocessed, &name, &value);
+            if (err == JB_ERR_MEMORY)
+            {
+               return err;
+            }
+            else if (err != JB_ERR_OK)
+            {
+               /* Line does not contain a name=value pair */
+               file->parse_error = cur_line;
+               file->parse_error_text = "Expected a name=value pair on this {{alias}} line, but couldn't find one.";
+               return JB_ERR_PARSE;
+            }
+
+            if ((new_alias = zalloc(sizeof(*new_alias))) == NULL)
+            {
+               /* Out of memory */
+               free(name);
+               free(value);
+               free_alias_list(alias_list);
+               return JB_ERR_MEMORY;
+            }
+
+            err = get_actions(value, alias_list, new_alias->action);
+            if (err)
+            {
+               /* Invalid action or out of memory */
+               free(name);
+               free(value);
+               free(new_alias);
+               free_alias_list(alias_list);
+               if (err == JB_ERR_MEMORY)
+               {
+                  return err;
+               }
+               else
+               {
+                  /* Line does not contain a name=value pair */
+                  file->parse_error = cur_line;
+                  file->parse_error_text = "This alias does not specify a valid set of actions.";
+                  return JB_ERR_PARSE;
+               }
+            }
+
+            free(value);
+
+            new_alias->name = name;
+
+            /* add to list */
+            new_alias->next = alias_list;
+            alias_list = new_alias;
+         }
+         else
+         {
+            cur_line->type = FILE_LINE_BLANK;
+         }
+         cur_line = cur_line->next;
+      }
+   }
+
+   /* Header done, process the main part of the file */
+   while (cur_line != NULL)
+   {
+      /* At this point, (cur_line->unprocessed[0] == '{') */
+      assert(cur_line->unprocessed[0] == '{');
+      text = cur_line->unprocessed + 1;
+      len = strlen(text) - 1;
+      if (text[len] != '}')
+      {
+         /* No closing } on header */
+         free_alias_list(alias_list);
+         file->parse_error = cur_line;
+         file->parse_error_text = "Headers starting with '{' must have a "
+            "closing bracket ('}').  Headers starting with two brackets ('{{') "
+            "must close with two brackets ('}}').";
+         return JB_ERR_PARSE;
+      }
+
+      if (text[0] == '{')
+      {
+         /* An invalid {{ header.  */
+         free_alias_list(alias_list);
+         file->parse_error = cur_line;
+         file->parse_error_text = "Unknown or unexpected two-bracket header.  "
+            "Please remember that the system (two-bracket) headers must "
+            "appear in the order {{settings}}, {{description}}, {{alias}}, "
+            "and must appear before any actions (one-bracket) headers.  "
+            "Also note that system headers may not be repeated.";
+         return JB_ERR_PARSE;
+      }
+
+      while ( (*text == ' ') || (*text == '\t') )
+      {
+         text++;
+         len--;
+      }
+      while ( (len > 0)
+           && ( (text[len - 1] == ' ')
+             || (text[len - 1] == '\t') ) )
+      {
+         len--;
+      }
+
+      cur_line->type = FILE_LINE_ACTION;
+
+      /* Remove {} and make copy */
+      if (NULL == (value = (char *) malloc(len + 1)))
+      {
+         /* Out of memory */
+         free_alias_list(alias_list);
+         return JB_ERR_MEMORY;
+      }
+      strncpy(value, text, len);
+      value[len] = '\0';
+
+      /* Get actions */
+      err = get_actions(value, alias_list, cur_line->data.action);
+      if (err)
+      {
+         /* Invalid action or out of memory */
+         free(value);
+         free_alias_list(alias_list);
+         if (err == JB_ERR_MEMORY)
+         {
+            return err;
+         }
+         else
+         {
+            /* Line does not contain a name=value pair */
+            file->parse_error = cur_line;
+            file->parse_error_text = "This header does not specify a valid set of actions.";
+            return JB_ERR_PARSE;
+         }
+      }
+
+      /* Done with string - it was clobbered anyway */
+      free(value);
+
+      /* Process next line */
+      cur_line = cur_line->next;
+
+      /* Loop processing URL patterns */
+      while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
+      {
+         if (cur_line->unprocessed[0])
+         {
+            /* Could parse URL here, but this isn't currently needed */
+
+            cur_line->type = FILE_LINE_URL;
+         }
+         else
+         {
+            cur_line->type = FILE_LINE_BLANK;
+         }
+         cur_line = cur_line->next;
+      }
+   } /* End main while(cur_line != NULL) loop */
+
+   free_alias_list(alias_list);
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_read_file_lines
+ *
+ * Description :  Read all the lines of a file into memory.
+ *                Handles whitespace, comments and line continuation.
+ *
+ * Parameters  :
+ *          1  :  fp = File to read from.  On return, this will be
+ *                     at EOF but it will not have been closed.
+ *          2  :  pfile = Destination for a linked list of file_lines.
+ *                        Will be set to NULL on error.
+ *          3  :  newline = How to handle newlines.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *
+ *********************************************************************/
+jb_err edit_read_file_lines(FILE *fp, struct file_line ** pfile, int *newline)
+{
+   struct file_line * first_line; /* Keep for return value or to free */
+   struct file_line * cur_line;   /* Current line */
+   struct file_line * prev_line;  /* Entry with prev_line->next = cur_line */
+   jb_err rval;
+
+   assert(fp);
+   assert(pfile);
+
+   *pfile = NULL;
+
+   cur_line = first_line = zalloc(sizeof(struct file_line));
+   if (cur_line == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   cur_line->type = FILE_LINE_UNPROCESSED;
+
+   rval = edit_read_line(fp, &cur_line->raw, &cur_line->prefix, &cur_line->unprocessed, newline, NULL);
+   if (rval)
+   {
+      /* Out of memory or empty file. */
+      /* Note that empty file is not an error we propogate up */
+      free(cur_line);
+      return ((rval == JB_ERR_FILE) ? JB_ERR_OK : rval);
+   }
+
+   do
+   {
+      prev_line = cur_line;
+      cur_line = prev_line->next = zalloc(sizeof(struct file_line));
+      if (cur_line == NULL)
+      {
+         /* Out of memory */
+         edit_free_file_lines(first_line);
+         return JB_ERR_MEMORY;
+      }
+
+      cur_line->type = FILE_LINE_UNPROCESSED;
+
+      rval = edit_read_line(fp, &cur_line->raw, &cur_line->prefix, &cur_line->unprocessed, newline, NULL);
+      if ((rval != JB_ERR_OK) && (rval != JB_ERR_FILE))
+      {
+         /* Out of memory */
+         edit_free_file_lines(first_line);
+         return JB_ERR_MEMORY;
+      }
+
+   }
+   while (rval != JB_ERR_FILE);
+
+   /* EOF */
+
+   /* We allocated one too many - free it */
+   prev_line->next = NULL;
+   free(cur_line);
+
+   *pfile = first_line;
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_read_file
+ *
+ * Description :  Read a complete file into memory.
+ *                Handles CGI parameter parsing.  If requested, also
+ *                checks the file's modification timestamp.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  parameters = map of cgi parameters.
+ *          3  :  require_version = true to check "ver" parameter.
+ *          4  :  suffix = File extension, e.g. ".action".
+ *          5  :  pfile = Destination for the file.  Will be set
+ *                        to NULL on error.
+ *
+ * CGI Parameters :
+ *    filename :  The name of the file to read, without the
+ *                path or ".action" extension.
+ *         ver :  (Only if require_version is nonzero)
+ *                Timestamp of the actions file.  If wrong, this
+ *                function fails with JB_ERR_MODIFIED.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if "filename" was not specified
+ *                                  or is not valid.
+ *                JB_ERR_FILE   if the file cannot be opened or
+ *                              contains no data
+ *                JB_ERR_MODIFIED if version checking was requested and
+ *                                failed - the file was modified outside
+ *                                of this CGI editor instance.
+ *
+ *********************************************************************/
+jb_err edit_read_file(struct client_state *csp,
+                      const struct map *parameters,
+                      int require_version,
+                      const char *suffix,
+                      struct editable_file **pfile)
+{
+   struct file_line * lines;
+   FILE * fp;
+   jb_err err;
+   char * filename;
+   const char * identifier;
+   struct editable_file * file;
+   unsigned version = 0;
+   struct stat statbuf[1];
+   char version_buf[22];
+   int newline = NEWLINE_UNKNOWN;
+
+   assert(csp);
+   assert(parameters);
+   assert(pfile);
+
+   *pfile = NULL;
+
+   err = get_file_name_param(csp, parameters, "f", suffix,
+                             &filename, &identifier);
+   if (err)
+   {
+      return err;
+   }
+
+   if (stat(filename, statbuf) < 0)
+   {
+      /* Error, probably file not found. */
+      free(filename);
+      return JB_ERR_FILE;
+   }
+   version = (unsigned) statbuf->st_mtime;
+
+   if (require_version)
+   {
+      unsigned specified_version;
+      err = get_number_param(csp, parameters, "v", &specified_version);
+      if (err)
+      {
+         free(filename);
+         return err;
+      }
+
+      if (version != specified_version)
+      {
+         return JB_ERR_MODIFIED;
+      }
+   }
+
+   if (NULL == (fp = fopen(filename,"rb")))
+   {
+      free(filename);
+      return JB_ERR_FILE;
+   }
+
+   err = edit_read_file_lines(fp, &lines, &newline);
+
+   fclose(fp);
+
+   if (err)
+   {
+      free(filename);
+      return err;
+   }
+
+   file = (struct editable_file *) zalloc(sizeof(*file));
+   if (err)
+   {
+      free(filename);
+      edit_free_file_lines(lines);
+      return err;
+   }
+
+   file->lines = lines;
+   file->newline = newline;
+   file->filename = filename;
+   file->version = version;
+   file->identifier = url_encode(identifier);
+
+   if (file->identifier == NULL)
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Correct file->version_str */
+   freez(file->version_str);
+   snprintf(version_buf, 22, "%u", file->version);
+   version_buf[21] = '\0';
+   file->version_str = strdup(version_buf);
+   if (version_buf == NULL)
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   *pfile = file;
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  edit_read_actions_file
+ *
+ * Description :  Read a complete actions file into memory.
+ *                Handles CGI parameter parsing.  If requested, also
+ *                checks the file's modification timestamp.
+ *
+ *                If this function detects an error in the categories
+ *                JB_ERR_FILE, JB_ERR_MODIFIED, or JB_ERR_PARSE,
+ *                then it handles it by filling in the specified
+ *                response structure and returning JB_ERR_FILE.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = HTTP response.  Only filled in on error.
+ *          2  :  parameters = map of cgi parameters.
+ *          3  :  require_version = true to check "ver" parameter.
+ *          4  :  pfile = Destination for the file.  Will be set
+ *                        to NULL on error.
+ *
+ * CGI Parameters :
+ *    filename :  The name of the actions file to read, without the
+ *                path or ".action" extension.
+ *         ver :  (Only if require_version is nonzero)
+ *                Timestamp of the actions file.  If wrong, this
+ *                function fails with JB_ERR_MODIFIED.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if "filename" was not specified
+ *                                  or is not valid.
+ *                JB_ERR_FILE  if the file does not contain valid data,
+ *                             or if file cannot be opened or
+ *                             contains no data, or if version
+ *                             checking was requested and failed.
+ *
+ *********************************************************************/
+jb_err edit_read_actions_file(struct client_state *csp,
+                              struct http_response *rsp,
+                              const struct map *parameters,
+                              int require_version,
+                              struct editable_file **pfile)
+{
+   jb_err err;
+   struct editable_file *file;
+
+   assert(csp);
+   assert(parameters);
+   assert(pfile);
+
+   *pfile = NULL;
+
+   err = edit_read_file(csp, parameters, require_version, ".action", &file);
+   if (err)
+   {
+      /* Try to handle if possible */
+      if (err == JB_ERR_FILE)
+      {
+         err = cgi_error_file(csp, rsp, lookup(parameters, "f"));
+      }
+      else if (err == JB_ERR_MODIFIED)
+      {
+         err = cgi_error_modified(csp, rsp, lookup(parameters, "f"));
+      }
+      if (err == JB_ERR_OK)
+      {
+         /*
+          * Signal to higher-level CGI code that there was a problem but we
+          * handled it, they should just return JB_ERR_OK.
+          */
+         err = JB_ERR_FILE;
+      }
+      return err;
+   }
+
+   err = edit_parse_actions_file(file);
+   if (err)
+   {
+      if (err == JB_ERR_PARSE)
+      {
+         err = cgi_error_parse(csp, rsp, file);
+         if (err == JB_ERR_OK)
+         {
+            /*
+             * Signal to higher-level CGI code that there was a problem but we
+             * handled it, they should just return JB_ERR_OK.
+             */
+            err = JB_ERR_FILE;
+         }
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   *pfile = file;
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_file_name_param
+ *
+ * Description :  Get the name of the file to edit from the parameters
+ *                passed to a CGI function.  This function handles
+ *                security checks such as blocking urls containing
+ *                "/" or ".", prepending the config file directory,
+ *                and adding the specified suffix.
+ *
+ *                (This is an essential security check, otherwise
+ *                users may be able to pass "../../../etc/passwd"
+ *                and overwrite the password file [linux], "prn:"
+ *                and print random data [Windows], etc...)
+ *
+ *                This function only allows filenames contining the
+ *                characters '-', '_', 'A'-'Z', 'a'-'z', and '0'-'9'.
+ *                That's probably too restrictive but at least it's
+ *                secure.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  parameters = map of cgi parameters
+ *          3  :  param_name = The name of the parameter to read
+ *          4  :  suffix = File extension, e.g. ".actions"
+ *          5  :  pfilename = destination for full filename.  Caller
+ *                free()s.  Set to NULL on error.
+ *          6  :  pparam = destination for partial filename,
+ *                suitable for use in another URL.  Allocated as part
+ *                of the map "parameters", so don't free it.
+ *                Set to NULL if not specified.
+ *
+ * Returns     :  JB_ERR_OK         on success
+ *                JB_ERR_MEMORY     on out-of-memory
+ *                JB_ERR_CGI_PARAMS if "filename" was not specified
+ *                                  or is not valid.
+ *
+ *********************************************************************/
+static jb_err get_file_name_param(struct client_state *csp,
+                                  const struct map *parameters,
+                                  const char *param_name,
+                                  const char *suffix,
+                                  char **pfilename,
+                                  const char **pparam)
+{
+   const char *param;
+   const char *s;
+   char *name;
+   char *fullpath;
+   char ch;
+   int len;
+
+   assert(csp);
+   assert(parameters);
+   assert(suffix);
+   assert(pfilename);
+   assert(pparam);
+
+   *pfilename = NULL;
+   *pparam = NULL;
+
+   param = lookup(parameters, param_name);
+   if (!*param)
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   *pparam = param;
+
+   len = strlen(param);
+   if (len >= FILENAME_MAX)
+   {
+      /* Too long. */
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* Check every character to see if it's legal */
+   s = param;
+   while ((ch = *s++) != '\0')
+   {
+      if ( ((ch < 'A') || (ch > 'Z'))
+        && ((ch < 'a') || (ch > 'z'))
+        && ((ch < '0') || (ch > '9'))
+        && (ch != '-')
+        && (ch != '_') )
+      {
+         /* Probable hack attempt. */
+         return JB_ERR_CGI_PARAMS;
+      }
+   }
+
+   /* Append extension */
+   name = malloc(len + strlen(suffix) + 1);
+   if (name == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+   strcpy(name, param);
+   strcpy(name + len, suffix);
+
+   /* Prepend path */
+   fullpath = make_path(csp->config->confdir, name);
+   free(name);
+
+   if (fullpath == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   /* Success */
+   *pfilename = fullpath;
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  get_url_spec_param
+ *
+ * Description :  Get a URL pattern from the parameters
+ *                passed to a CGI function.  Removes leading/trailing
+ *                spaces and validates it.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  parameters = map of cgi parameters
+ *          3  :  name = Name of CGI parameter to read
+ *          4  :  pvalue = destination for value.  Will be malloc()'d.
+ *                         Set to NULL on error.
+ *
+ * Returns     :  JB_ERR_OK         on success
+ *                JB_ERR_MEMORY     on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the parameter was not specified
+ *                                  or is not valid.
+ *
+ *********************************************************************/
+static jb_err get_url_spec_param(struct client_state *csp,
+                                 const struct map *parameters,
+                                 const char *name,
+                                 char **pvalue)
+{
+   const char *orig_param;
+   char *param;
+   char *s;
+   struct url_spec compiled[1];
+   jb_err err;
+
+   assert(csp);
+   assert(parameters);
+   assert(name);
+   assert(pvalue);
+
+   *pvalue = NULL;
+
+   orig_param = lookup(parameters, name);
+   if (!*orig_param)
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* Copy and trim whitespace */
+   param = strdup(orig_param);
+   if (param == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+   chomp(param);
+
+   /* Must be non-empty, and can't allow 1st character to be '{' */
+   if (param[0] == '\0' || param[0] == '{')
+   {
+      free(param);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* Check for embedded newlines */
+   for (s = param; *s != '\0'; s++)
+   {
+      if ((*s == '\r') || (*s == '\n'))
+      {
+         free(param);
+         return JB_ERR_CGI_PARAMS;
+      }
+   }
+
+   /* Check that regex is valid */
+   s = strdup(param);
+   if (s == NULL)
+   {
+      free(param);
+      return JB_ERR_MEMORY;
+   }
+   err = create_url_spec(compiled, s);
+   free(s);
+   if (err)
+   {
+      free(param);
+      return (err == JB_ERR_MEMORY) ? JB_ERR_MEMORY : JB_ERR_CGI_PARAMS;
+   }
+   free_url_spec(compiled);
+
+   if (param[strlen(param) - 1] == '\\')
+   {
+      /*
+       * Must protect trailing '\\' from becoming line continuation character.
+       * Two methods: 1) If it's a domain only, add a trailing '/'.
+       * 2) For path, add the do-nothing PCRE expression (?:) to the end
+       */
+      if (strchr(param, '/') == NULL)
+      {
+         err = string_append(&param, "/");
+      }
+      else
+      {
+         err = string_append(&param, "(?:)");
+      }
+      if (err)
+      {
+         return err;
+      }
+
+      /* Check that the modified regex is valid */
+      s = strdup(param);
+      if (s == NULL)
+      {
+         free(param);
+         return JB_ERR_MEMORY;
+      }
+      err = create_url_spec(compiled, s);
+      free(s);
+      if (err)
+      {
+         free(param);
+         return (err == JB_ERR_MEMORY) ? JB_ERR_MEMORY : JB_ERR_CGI_PARAMS;
+      }
+      free_url_spec(compiled);
+   }
+
+   *pvalue = param;
+   return JB_ERR_OK;
+}
+
+/*********************************************************************
+ *
+ * Function    :  map_radio
+ *
+ * Description :  Map a set of radio button values.  E.g. if you have
+ *                3 radio buttons, declare them as:
+ *                  <option type="radio" name="xyz" @xyz-a@>
+ *                  <option type="radio" name="xyz" @xyz-b@>
+ *                  <option type="radio" name="xyz" @xyz-c@>
+ *                Then map one of the @xyz-?@ variables to "checked"
+ *                and all the others to empty by calling:
+ *                map_radio(exports, "xyz", "abc", sel)
+ *                Where 'sel' is 'a', 'b', or 'c'.
+ *
+ * Parameters  :
+ *          1  :  exports = Exports map to modify.
+ *          2  :  optionname = name for map
+ *          3  :  values = null-terminated list of values;
+ *          4  :  value = Selected value.
+ *
+ * CGI Parameters : None
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *
+ *********************************************************************/
+static jb_err map_radio(struct map * exports,
+                        const char * optionname,
+                        const char * values,
+                        int value)
+{
+   size_t len;
+   char * buf;
+   char * p;
+   char c;
+
+   assert(exports);
+   assert(optionname);
+   assert(values);
+
+   len = strlen(optionname);
+   buf = malloc(len + 3);
+   if (buf == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   strcpy(buf, optionname);
+   p = buf + len;
+   *p++ = '-';
+   p[1] = '\0';
+
+   while ((c = *values++) != '\0')
+   {
+      if (c != value)
+      {
+         *p = c;
+         if (map(exports, buf, 1, "", 1))
+         {
+            return JB_ERR_MEMORY;
+         }
+      }
+   }
+
+   *p = value;
+   return map(exports, buf, 0, "checked", 1);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_modified
+ *
+ * Description :  CGI function that is called when a file is modified
+ *                outside the CGI editor.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  filename = The file that was modified.
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.
+ *
+ *********************************************************************/
+jb_err cgi_error_modified(struct client_state *csp,
+                          struct http_response *rsp,
+                          const char *filename)
+{
+   struct map *exports;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(filename);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, html_encode(filename), 0);
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-modified", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_parse
+ *
+ * Description :  CGI function that is called when a file cannot
+ *                be parsed by the CGI editor.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  file = The file that was modified.
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.
+ *
+ *********************************************************************/
+jb_err cgi_error_parse(struct client_state *csp,
+                       struct http_response *rsp,
+                       struct editable_file *file)
+{
+   struct map *exports;
+   jb_err err;
+   struct file_line *cur_line;
+
+   assert(csp);
+   assert(rsp);
+   assert(file);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, file->identifier, 1);
+   if (!err) err = map(exports, "parse-error", 1, html_encode(file->parse_error_text), 0);
+
+   cur_line = file->parse_error;
+   assert(cur_line);
+
+   if (!err) err = map(exports, "line-raw", 1, html_encode(cur_line->raw), 0);
+   if (!err) err = map(exports, "line-data", 1, html_encode(cur_line->unprocessed), 0);
+
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-parse", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_file
+ *
+ * Description :  CGI function that is called when a file cannot be
+ *                opened by the CGI editor.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  filename = The file that was modified.
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.
+ *
+ *********************************************************************/
+jb_err cgi_error_file(struct client_state *csp,
+                      struct http_response *rsp,
+                      const char *filename)
+{
+   struct map *exports;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(filename);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, html_encode(filename), 0);
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-file", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_file
+ *
+ * Description :  CGI function that is called when a file cannot be
+ *                opened for writing by the CGI editor.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  filename = The file that we can't write to
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.
+ *
+ *********************************************************************/
+jb_err cgi_error_file_read_only(struct client_state *csp,
+                                struct http_response *rsp,
+                                const char *filename)
+{
+   struct map *exports;
+   jb_err err;
+
+   assert(csp);
+   assert(rsp);
+   assert(filename);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, html_encode(filename), 0);
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-file-read-only", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_error_disabled
+ *
+ * Description :  CGI function that is called if the actions editor
+ *                is called although it's disabled in config
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *
+ * CGI Parameters : none
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error.
+ *
+ *********************************************************************/
+jb_err cgi_error_disabled(struct client_state *csp,
+                          struct http_response *rsp)
+{
+   struct map *exports;
+
+   assert(csp);
+   assert(rsp);
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   return template_fill_for_cgi(csp, "cgi-error-disabled", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions
+ *
+ * Description :  CGI function that allows the user to choose which
+ *                actions file to edit.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters : None
+ *
+ * Returns     :  JB_ERR_OK on success
+ *                JB_ERR_MEMORY on out-of-memory error
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions(struct client_state *csp,
+                        struct http_response *rsp,
+                        const struct map *parameters)
+{
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   /* FIXME: Incomplete */
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      return JB_ERR_MEMORY;
+   }
+   if (enlist_unique_header(rsp->headers, "Location",
+      CGI_PREFIX "edit-actions-list?f=default"))
+   {
+      free(rsp->status);
+      rsp->status = NULL;
+      return JB_ERR_MEMORY;
+   }
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_list
+ *
+ * Description :  CGI function that edits the actions list.
+ *                FIXME: This function shouldn't FATAL ever.
+ *                FIXME: This function doesn't check the retval of map()
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters : filename
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_FILE   if the file cannot be opened or
+ *                              contains no data
+ *                JB_ERR_CGI_PARAMS if "filename" was not specified
+ *                                  or is not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_list(struct client_state *csp,
+                             struct http_response *rsp,
+                             const struct map *parameters)
+{
+   char * section_template;
+   char * url_template;
+   char * sections;
+   char * urls;
+   char buf[150];
+   char * s;
+   struct map * exports;
+   struct map * section_exports;
+   struct map * url_exports;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number = 0;
+   unsigned prev_section_line_number = ((unsigned) (-1));
+   int i, url_1_2;
+   struct file_list * fl;
+   struct url_actions * b;
+   char * buttons = NULL;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Load actions file */
+   err = edit_read_actions_file(csp, rsp, parameters, 0, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   /* Find start of actions in file */
+   cur_line = file->lines;
+   line_number = 1;
+   while ((cur_line != NULL) && (cur_line->type != FILE_LINE_ACTION))
+   {
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   /*
+    * Conventional actions files should have a match all block
+    * at the start:
+    * cur_line             = {...global actions...}
+    * cur_line->next       = /
+    * cur_line->next->next = {...actions...} or EOF
+    */
+   if ( (cur_line != NULL)
+     && (cur_line->type == FILE_LINE_ACTION)
+     && (cur_line->next != NULL)
+     && (cur_line->next->type == FILE_LINE_URL)
+     && (0 == strcmp(cur_line->next->unprocessed, "/"))
+     && ( (cur_line->next->next == NULL)
+       || (cur_line->next->next->type != FILE_LINE_URL)
+      ) )
+   {
+      /*
+       * Generate string with buttons to set actions for "/" to
+       * any predefined set of actions (named standard.*, probably
+       * residing in standard.action).
+       */
+
+      err = template_load(csp, &section_template, "edit-actions-list-button", 0);
+      if (err)
+      {
+         edit_free_file(file);
+         free_map(exports);
+         if (err == JB_ERR_FILE)
+         {
+            return cgi_error_no_template(csp, rsp, "edit-actions-list-button");
+         }
+         return err;
+      }
+
+      err = template_fill(&section_template, exports);
+      if (err)
+      {
+         edit_free_file(file);
+         free_map(exports);
+         return err;
+      }
+
+      buttons = strdup("");
+      for (i = 0; i < MAX_ACTION_FILES; i++)
+      {
+         if (((fl = csp->actions_list[i]) != NULL) && ((b = fl->f) != NULL))
+         {
+            for (b = b->next; NULL != b; b = b->next)
+            {
+               if (!strncmp(b->url->spec, "standard.", 9) && *(b->url->spec + 9) != '\0')
+               {
+                  if (err || (NULL == (section_exports = new_map())))
+                  {
+                     freez(buttons);
+                     free(section_template);
+                     edit_free_file(file);
+                     free_map(exports);
+                     return JB_ERR_MEMORY;
+                  }
+
+                  err = map(section_exports, "button-name", 1, b->url->spec + 9, 1);
+
+                  if (err || (NULL == (s = strdup(section_template))))
+                  {
+                     free_map(section_exports);
+                     freez(buttons);
+                     free(section_template);
+                     edit_free_file(file);
+                     free_map(exports);
+                     return JB_ERR_MEMORY;
+                  }
+
+                  if (!err) err = template_fill(&s, section_exports);
+                  free_map(section_exports);
+                  if (!err) err = string_join(&buttons, s);
+               }
+            }
+         }
+      }
+      freez(section_template);
+      if (!err) err = map(exports, "all-urls-buttons", 1, buttons, 0);
+
+      /*
+       * Conventional actions file, supply extra editing help.
+       * (e.g. don't allow them to make it an unconventional one).
+       */
+      if (!err) err = map_conditional(exports, "all-urls-present", 1);
+
+      snprintf(buf, 150, "%d", line_number);
+      if (!err) err = map(exports, "all-urls-s", 1, buf, 1);
+      snprintf(buf, 150, "%d", line_number + 2);
+      if (!err) err = map(exports, "all-urls-s-next", 1, buf, 1);
+      if (!err) err = map(exports, "all-urls-actions", 1,
+                          actions_to_html(csp, cur_line->data.action), 0);
+
+       /* Skip the 2 lines */
+      cur_line = cur_line->next->next;
+      line_number += 2;
+
+      /*
+       * Note that prev_section_line_number is NOT set here.
+       * This is deliberate and not a bug.  It stops a "Move up"
+       * option appearing on the next section.  Clicking "Move
+       * up" would make the actions file unconventional, which
+       * we don't want, so we hide this option.
+       */
+   }
+   else
+   {
+      /*
+       * Non-standard actions file - does not begin with
+       * the "All URLs" section.
+       */
+      if (!err) err = map_conditional(exports, "all-urls-present", 0);
+   }
+
+   /* Set up global exports */
+
+   if (!err) err = map(exports, "f", 1, file->identifier, 1);
+   if (!err) err = map(exports, "v", 1, file->version_str, 1);
+
+   /* Discourage private additions to default.action */
+
+   if (!err) err = map_conditional(exports, "default-action",
+                                   (strcmp("default", lookup(parameters, "f")) == 0));
+   if (err)
+   {
+      edit_free_file(file);
+      free_map(exports);
+      return err;
+   }
+
+   /* Should do all global exports above this point */
+
+   /* Load templates */
+
+   err = template_load(csp, &section_template, "edit-actions-list-section", 0);
+   if (err)
+   {
+      edit_free_file(file);
+      free_map(exports);
+      if (err == JB_ERR_FILE)
+      {
+         return cgi_error_no_template(csp, rsp, "edit-actions-list-section");
+      }
+      return err;
+   }
+
+   err = template_load(csp, &url_template, "edit-actions-list-url", 0);
+   if (err)
+   {
+      free(section_template);
+      edit_free_file(file);
+      free_map(exports);
+      if (err == JB_ERR_FILE)
+      {
+         return cgi_error_no_template(csp, rsp, "edit-actions-list-url");
+      }
+      return err;
+   }
+
+   err = template_fill(&section_template, exports);
+   if (err)
+   {
+      free(url_template);
+      edit_free_file(file);
+      free_map(exports);
+      free(url_template);
+      return err;
+   }
+
+   err = template_fill(&url_template, exports);
+   if (err)
+   {
+      free(section_template);
+      edit_free_file(file);
+      free_map(exports);
+      return err;
+   }
+
+   if (NULL == (sections = strdup("")))
+   {
+      free(section_template);
+      free(url_template);
+      edit_free_file(file);
+      free_map(exports);
+      return JB_ERR_MEMORY;
+   }
+
+   while ((cur_line != NULL) && (cur_line->type == FILE_LINE_ACTION))
+   {
+      if (NULL == (section_exports = new_map()))
+      {
+         free(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         return JB_ERR_MEMORY;
+      }
+
+      snprintf(buf, 150, "%d", line_number);
+      err = map(section_exports, "s", 1, buf, 1);
+      if (!err) err = map(section_exports, "actions", 1,
+                          actions_to_html(csp, cur_line->data.action), 0);
+
+      if ( (!err)
+        && (cur_line->next != NULL)
+        && (cur_line->next->type == FILE_LINE_URL))
+      {
+         /* This section contains at least one URL, don't allow delete */
+         err = map_block_killer(section_exports, "empty-section");
+      }
+      else
+      {
+         if (!err) err = map_block_keep(section_exports, "empty-section");
+      }
+
+      if (prev_section_line_number != ((unsigned)(-1)))
+      {
+         /* Not last section */
+         snprintf(buf, 150, "%d", prev_section_line_number);
+         if (!err) err = map(section_exports, "s-prev", 1, buf, 1);
+         if (!err) err = map_block_keep(section_exports, "s-prev-exists");
+      }
+      else
+      {
+         /* Last section */
+         if (!err) err = map_block_killer(section_exports, "s-prev-exists");
+      }
+      prev_section_line_number = line_number;
+
+      if (err)
+      {
+         free(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         free_map(section_exports);
+         return err;
+      }
+
+      /* Should do all section-specific exports above this point */
+
+      if (NULL == (urls = strdup("")))
+      {
+         free(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         free_map(section_exports);
+         return JB_ERR_MEMORY;
+      }
+
+      url_1_2 = 2;
+
+      cur_line = cur_line->next;
+      line_number++;
+
+      while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL))
+      {
+         if (NULL == (url_exports = new_map()))
+         {
+            free(urls);
+            free(sections);
+            free(section_template);
+            free(url_template);
+            edit_free_file(file);
+            free_map(exports);
+            free_map(section_exports);
+            return JB_ERR_MEMORY;
+         }
+
+         snprintf(buf, 150, "%d", line_number);
+         err = map(url_exports, "p", 1, buf, 1);
+
+         snprintf(buf, 150, "%d", url_1_2);
+         if (!err) err = map(url_exports, "url-1-2", 1, buf, 1);
+
+         if (!err) err = map(url_exports, "url-html", 1,
+                             html_encode(cur_line->unprocessed), 0);
+         if (!err) err = map(url_exports, "url", 1,
+                             url_encode(cur_line->unprocessed), 0);
+
+         if (err)
+         {
+            free(urls);
+            free(sections);
+            free(section_template);
+            free(url_template);
+            edit_free_file(file);
+            free_map(exports);
+            free_map(section_exports);
+            free_map(url_exports);
+            return err;
+         }
+
+         if (NULL == (s = strdup(url_template)))
+         {
+            free(urls);
+            free(sections);
+            free(section_template);
+            free(url_template);
+            edit_free_file(file);
+            free_map(exports);
+            free_map(section_exports);
+            free_map(url_exports);
+            return JB_ERR_MEMORY;
+         }
+
+         err = template_fill(&s, section_exports);
+         if (!err) err = template_fill(&s, url_exports);
+         if (!err) err = string_append(&urls, s);
+
+         free_map(url_exports);
+         freez(s);
+
+         if (err)
+         {
+            freez(urls);
+            free(sections);
+            free(section_template);
+            free(url_template);
+            edit_free_file(file);
+            free_map(exports);
+            free_map(section_exports);
+            return err;
+         }
+
+         url_1_2 = 3 - url_1_2;
+
+         cur_line = cur_line->next;
+         line_number++;
+      }
+
+      err = map(section_exports, "urls", 1, urls, 0);
+
+      /* Could also do section-specific exports here, but it wouldn't be as fast */
+
+      if ( (cur_line != NULL)
+        && (cur_line->type == FILE_LINE_ACTION))
+      {
+         /* Not last section */
+         snprintf(buf, 150, "%d", line_number);
+         if (!err) err = map(section_exports, "s-next", 1, buf, 1);
+         if (!err) err = map_block_keep(section_exports, "s-next-exists");
+      }
+      else
+      {
+         /* Last section */
+         if (!err) err = map_block_killer(section_exports, "s-next-exists");
+      }
+
+      if (err)
+      {
+         free(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         free_map(section_exports);
+         return err;
+      }
+
+      if (NULL == (s = strdup(section_template)))
+      {
+         free(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         free_map(section_exports);
+         return JB_ERR_MEMORY;
+      }
+
+      err = template_fill(&s, section_exports);
+      if (!err) err = string_append(&sections, s);
+
+      freez(s);
+      free_map(section_exports);
+
+      if (err)
+      {
+         freez(sections);
+         free(section_template);
+         free(url_template);
+         edit_free_file(file);
+         free_map(exports);
+         return err;
+      }
+   }
+
+   edit_free_file(file);
+   free(section_template);
+   free(url_template);
+
+   err = map(exports, "sections", 1, sections, 0);
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   /* Could also do global exports here, but it wouldn't be as fast */
+
+   return template_fill_for_cgi(csp, "edit-actions-list", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_for_url
+ *
+ * Description :  CGI function that edits the Actions list.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters : None
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_for_url(struct client_state *csp,
+                                struct http_response *rsp,
+                                const struct map *parameters)
+{
+   struct map * exports;
+   unsigned sectionid;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   jb_err err;
+   struct file_list *filter_file;
+   struct re_filterfile_spec *filter_group;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s", &sectionid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   cur_line = file->lines;
+
+   for (line_number = 1; (cur_line != NULL) && (line_number < sectionid); line_number++)
+   {
+      cur_line = cur_line->next;
+   }
+
+   if ( (cur_line == NULL)
+     || (line_number != sectionid)
+     || (sectionid < 1)
+     || (cur_line->type != FILE_LINE_ACTION))
+   {
+      /* Invalid "sectionid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   if (NULL == (exports = default_exports(csp, NULL)))
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   err = map(exports, "f", 1, file->identifier, 1);
+   if (!err) err = map(exports, "v", 1, file->version_str, 1);
+   if (!err) err = map(exports, "s", 1, url_encode(lookup(parameters, "s")), 0);
+
+   if (!err) err = actions_to_radio(exports, cur_line->data.action);
+
+   filter_file = csp->rlist;
+   filter_group = ((filter_file != NULL) ? filter_file->f : NULL);
+
+   if (!err) err = map_conditional(exports, "any-filters-defined", (filter_group != NULL));
+
+   if (err)
+   {
+      edit_free_file(file);
+      free_map(exports);
+      return err;
+   }
+
+   if (filter_group == NULL)
+   {
+      err = map(exports, "filter-params", 1, "", 1);
+   }
+   else
+   {
+      /* We have some entries in the filter list */
+      char * result;
+      int index = 0;
+      char * filter_template;
+
+      err = template_load(csp, &filter_template, "edit-actions-for-url-filter", 0);
+      if (err)
+      {
+         edit_free_file(file);
+         free_map(exports);
+         if (err == JB_ERR_FILE)
+         {
+            return cgi_error_no_template(csp, rsp, "edit-actions-for-url-filter");
+         }
+         return err;
+      }
+
+      err = template_fill(&filter_template, exports);
+
+      result = strdup("");
+
+      for (;(!err) && (filter_group != NULL); filter_group = filter_group->next)
+      {
+         char current_mode = 'x';
+         struct list_entry *filter_name;
+         char * this_line;
+         struct map *line_exports;
+         char number[20];
+
+         filter_name = cur_line->data.action->multi_add[ACTION_MULTI_FILTER]->first;
+         while ((filter_name != NULL)
+             && (0 != strcmp(filter_group->name, filter_name->str)))
+         {
+              filter_name = filter_name->next;
+         }
+
+         if (filter_name != NULL)
+         {
+            current_mode = 'y';
+         }
+         else
+         {
+            filter_name = cur_line->data.action->multi_remove[ACTION_MULTI_FILTER]->first;
+            while ((filter_name != NULL)
+                && (0 != strcmp(filter_group->name, filter_name->str)))
+            {
+                 filter_name = filter_name->next;
+            }
+            if (filter_name != NULL)
+            {
+               current_mode = 'n';
+            }
+         }
+
+         /* Generate a unique serial number */
+         snprintf(number, sizeof(number), "%x", index++);
+         number[sizeof(number) - 1] = '\0';
+
+         line_exports = new_map();
+         if (line_exports == NULL)
+         {
+            err = JB_ERR_MEMORY;
+            freez(result);
+         }
+         else
+         {
+            if (!err) err = map(line_exports, "index", 1, number, 1);
+            if (!err) err = map(line_exports, "name",  1, filter_group->name, 1);
+            if (!err) err = map(line_exports, "description",  1, filter_group->description, 1);
+            if (!err) err = map_radio(line_exports, "this-filter", "ynx", current_mode);
+
+            this_line = NULL;
+            if (!err)
+            {
+               this_line = strdup(filter_template);
+               if (this_line == NULL) err = JB_ERR_MEMORY;
+            }
+            if (!err) err = template_fill(&this_line, line_exports);
+            string_join(&result, this_line);
+
+            free_map(line_exports);
+         }
+      }
+
+      freez(filter_template);
+
+      if (!err)
+      {
+         err = map(exports, "filter-params", 1, result, 0);
+      }
+      else
+      {
+         freez(result);
+      }
+   }
+
+   if (!err) err = map_radio(exports, "filter-all", "nx",
+      (cur_line->data.action->multi_remove_all[ACTION_MULTI_FILTER] ? 'n' : 'x'));
+
+   edit_free_file(file);
+
+   if (err)
+   {
+      free_map(exports);
+      return err;
+   }
+
+   return template_fill_for_cgi(csp, "edit-actions-for-url", exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_submit
+ *
+ * Description :  CGI function that actually edits the Actions list.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters : None
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_submit(struct client_state *csp,
+                               struct http_response *rsp,
+                               const struct map *parameters)
+{
+   unsigned sectionid;
+   char * actiontext;
+   char * newtext;
+   size_t len;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   char * target;
+   jb_err err;
+   int index;
+   const char * action_set_name;
+   char ch;
+   struct file_list * fl;
+   struct url_actions * b;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s", &sectionid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   cur_line = file->lines;
+
+   for (line_number = 1; (cur_line != NULL) && (line_number < sectionid); line_number++)
+   {
+      cur_line = cur_line->next;
+   }
+
+   if ( (cur_line == NULL)
+     || (line_number != sectionid)
+     || (sectionid < 1)
+     || (cur_line->type != FILE_LINE_ACTION))
+   {
+      /* Invalid "sectionid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   get_string_param(parameters, "p", &action_set_name);
+   if (action_set_name != NULL)
+   {
+      for (index = 0; index < MAX_ACTION_FILES; index++)
+      {
+         if (((fl = csp->actions_list[index]) != NULL) && ((b = fl->f) != NULL))
+         {
+            for (b = b->next; NULL != b; b = b->next)
+            {
+               if (!strncmp(b->url->spec, "standard.", 9) && !strcmp(b->url->spec + 9, action_set_name))
+               {
+                  copy_action(cur_line->data.action, b->action); 
+                  goto found;
+               }
+            }
+         }
+      }
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+
+      found: ;
+   }
+   else
+   {
+      err = actions_from_radio(parameters, cur_line->data.action);
+   }
+
+   if(err)
+   {
+      /* Out of memory */
+      edit_free_file(file);
+      return err;
+   }
+
+   ch = get_char_param(parameters, "filter_all");
+   if (ch == 'N')
+   {
+      list_remove_all(cur_line->data.action->multi_add[ACTION_MULTI_FILTER]);
+      list_remove_all(cur_line->data.action->multi_remove[ACTION_MULTI_FILTER]);
+      cur_line->data.action->multi_remove_all[ACTION_MULTI_FILTER] = 1;
+   }
+   else if (ch == 'X')
+   {
+      cur_line->data.action->multi_remove_all[ACTION_MULTI_FILTER] = 0;
+   }
+
+   for (index = 0; !err; index++)
+   {
+      char key_value[30];
+      char key_name[30];
+      const char *name;
+      char value;
+
+      /* Generate the keys */
+      snprintf(key_value, sizeof(key_value), "filter_r%x", index);
+      key_value[sizeof(key_value) - 1] = '\0';
+      snprintf(key_name, sizeof(key_name), "filter_n%x", index);
+      key_name[sizeof(key_name) - 1] = '\0';
+
+      err = get_string_param(parameters, key_name, &name);
+      if (err) break;
+
+      if (name == NULL)
+      {
+         /* End of list */
+         break;
+      }
+
+      value = get_char_param(parameters, key_value);
+      if (value == 'Y')
+      {
+         list_remove_item(cur_line->data.action->multi_add[ACTION_MULTI_FILTER], name);
+         if (!err) err = enlist(cur_line->data.action->multi_add[ACTION_MULTI_FILTER], name);
+         list_remove_item(cur_line->data.action->multi_remove[ACTION_MULTI_FILTER], name);
+      }
+      else if (value == 'N')
+      {
+         list_remove_item(cur_line->data.action->multi_add[ACTION_MULTI_FILTER], name);
+         if (!cur_line->data.action->multi_remove_all[ACTION_MULTI_FILTER])
+         {
+            list_remove_item(cur_line->data.action->multi_remove[ACTION_MULTI_FILTER], name);
+            if (!err) err = enlist(cur_line->data.action->multi_remove[ACTION_MULTI_FILTER], name);
+         }
+      }
+      else if (value == 'X')
+      {
+         list_remove_item(cur_line->data.action->multi_add[ACTION_MULTI_FILTER], name);
+         list_remove_item(cur_line->data.action->multi_remove[ACTION_MULTI_FILTER], name);
+      }
+   }
+
+   if(err)
+   {
+      /* Out of memory */
+      edit_free_file(file);
+      return err;
+   }
+
+   if (NULL == (actiontext = actions_to_text(cur_line->data.action)))
+   {
+      /* Out of memory */
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   len = strlen(actiontext);
+   if (len == 0)
+   {
+      /*
+       * Empty action - must special-case this.
+       * Simply setting len to 1 is sufficient...
+       */
+      len = 1;
+   }
+
+   if (NULL == (newtext = malloc(len + 2)))
+   {
+      /* Out of memory */
+      free(actiontext);
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+   strcpy(newtext, actiontext);
+   free(actiontext);
+   newtext[0]       = '{';
+   newtext[len]     = '}';
+   newtext[len + 1] = '\0';
+
+   freez(cur_line->raw);
+   freez(cur_line->unprocessed);
+   cur_line->unprocessed = newtext;
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+   string_join(&target, section_target(sectionid));
+
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_url
+ *
+ * Description :  CGI function that actually edits a URL pattern in
+ *                an actions file.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *    filename : Identifies the file to edit
+ *         ver : File's last-modified time
+ *     section : Line number of section to edit
+ *     pattern : Line number of pattern to edit
+ *      newval : New value for pattern
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_url(struct client_state *csp,
+                            struct http_response *rsp,
+                            const struct map *parameters)
+{
+   unsigned patternid;
+   char * new_pattern;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   unsigned section_start_line_number = 0;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "p", &patternid);
+   if (err)
+   {
+      return err;
+   }
+   if (patternid < 1U)
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   err = get_url_spec_param(csp, parameters, "u", &new_pattern);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      free(new_pattern);
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   line_number = 1;
+   cur_line = file->lines;
+
+   while ((cur_line != NULL) && (line_number < patternid))
+   {
+      if (cur_line->type == FILE_LINE_ACTION)
+      {
+         section_start_line_number = line_number;
+      }      
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   if ( (cur_line == NULL)
+     || (cur_line->type != FILE_LINE_URL))
+   {
+      /* Invalid "patternid" parameter */
+      free(new_pattern);
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* At this point, the line to edit is in cur_line */
+
+   freez(cur_line->raw);
+   freez(cur_line->unprocessed);
+   cur_line->unprocessed = new_pattern;
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+   string_join(&target, section_target(section_start_line_number));
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_add_url
+ *
+ * Description :  CGI function that actually adds a URL pattern to
+ *                an actions file.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *    filename : Identifies the file to edit
+ *         ver : File's last-modified time
+ *     section : Line number of section to edit
+ *      newval : New pattern
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_add_url(struct client_state *csp,
+                                struct http_response *rsp,
+                                const struct map *parameters)
+{
+   unsigned sectionid;
+   char * new_pattern;
+   struct file_line * new_line;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s", &sectionid);
+   if (err)
+   {
+      return err;
+   }
+   if (sectionid < 1U)
+   {
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   err = get_url_spec_param(csp, parameters, "u", &new_pattern);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      free(new_pattern);
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   line_number = 1;
+   cur_line = file->lines;
+
+   while ((cur_line != NULL) && (line_number < sectionid))
+   {
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   if ( (cur_line == NULL)
+     || (cur_line->type != FILE_LINE_ACTION))
+   {
+      /* Invalid "sectionid" parameter */
+      free(new_pattern);
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* At this point, the section header is in cur_line - add after this. */
+
+   /* Allocate the new line */
+   new_line = (struct file_line *)zalloc(sizeof(*new_line));
+   if (new_line == NULL)
+   {
+      free(new_pattern);
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Fill in the data members of the new line */
+   new_line->raw = NULL;
+   new_line->prefix = NULL;
+   new_line->unprocessed = new_pattern;
+   new_line->type = FILE_LINE_URL;
+
+   /* Link new_line into the list, after cur_line */
+   new_line->next = cur_line->next;
+   cur_line->next = new_line;
+
+   /* Done making changes, now commit */
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+   string_join(&target, section_target(sectionid));
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_remove_url
+ *
+ * Description :  CGI function that actually removes a URL pattern from
+ *                the actions file.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           p : (pattern) Line number of pattern to remove
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_remove_url(struct client_state *csp,
+                                   struct http_response *rsp,
+                                   const struct map *parameters)
+{
+   unsigned patternid;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   struct file_line * prev_line;
+   unsigned line_number;
+   unsigned section_start_line_number = 0;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "p", &patternid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   line_number = 1;
+   prev_line = NULL;
+   cur_line = file->lines;
+
+   while ((cur_line != NULL) && (line_number < patternid))
+   {
+      if (cur_line->type == FILE_LINE_ACTION)
+      {
+         section_start_line_number = line_number;
+      }
+      prev_line = cur_line;
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   if ( (cur_line == NULL)
+     || (prev_line == NULL)
+     || (cur_line->type != FILE_LINE_URL))
+   {
+      /* Invalid "patternid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* At this point, the line to remove is in cur_line, and the previous
+    * one is in prev_line
+    */
+
+   /* Unlink cur_line */
+   prev_line->next = cur_line->next;
+   cur_line->next = NULL;
+
+   /* Free cur_line */
+   edit_free_file_lines(cur_line);
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+   string_join(&target, section_target(section_start_line_number));
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_section_remove
+ *
+ * Description :  CGI function that actually removes a whole section from
+ *                the actions file.  The section must be empty first
+ *                (else JB_ERR_CGI_PARAMS).
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           s : (section) Line number of section to edit
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_section_remove(struct client_state *csp,
+                                       struct http_response *rsp,
+                                       const struct map *parameters)
+{
+   unsigned sectionid;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   struct file_line * prev_line;
+   unsigned line_number;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s", &sectionid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   line_number = 1;
+   cur_line = file->lines;
+
+   prev_line = NULL;
+   while ((cur_line != NULL) && (line_number < sectionid))
+   {
+      prev_line = cur_line;
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   if ( (cur_line == NULL)
+     || (cur_line->type != FILE_LINE_ACTION) )
+   {
+      /* Invalid "sectionid" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   if ( (cur_line->next != NULL)
+     && (cur_line->next->type == FILE_LINE_URL) )
+   {
+      /* Section not empty. */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* At this point, the line to remove is in cur_line, and the previous
+    * one is in prev_line
+    */
+
+   /* Unlink cur_line */
+   if (prev_line == NULL)
+   {
+      /* Removing the first line from the file */
+      file->lines = cur_line->next;
+   }
+   else
+   {
+      prev_line->next = cur_line->next;
+   }
+   cur_line->next = NULL;
+
+   /* Free cur_line */
+   edit_free_file_lines(cur_line);
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_section_add
+ *
+ * Description :  CGI function that adds a new empty section to
+ *                an actions file.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *           s : (section) Line number of section to add after, 0 for
+ *               start of file.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_section_add(struct client_state *csp,
+                                    struct http_response *rsp,
+                                    const struct map *parameters)
+{
+   unsigned sectionid;
+   struct file_line * new_line;
+   char * new_text;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   unsigned line_number;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s", &sectionid);
+   if (err)
+   {
+      return err;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   line_number = 1;
+   cur_line = file->lines;
+
+   if (sectionid < 1U)
+   {
+      /* Add to start of file */
+      if (cur_line != NULL)
+      {
+         /* There's something in the file, find the line before the first
+          * action.
+          */
+         while ( (cur_line->next != NULL)
+              && (cur_line->next->type != FILE_LINE_ACTION) )
+         {
+            cur_line = cur_line->next;
+            line_number++;
+         }
+      }
+   }
+   else
+   {
+      /* Add after stated section. */
+      while ((cur_line != NULL) && (line_number < sectionid))
+      {
+         cur_line = cur_line->next;
+         line_number++;
+      }
+
+      if ( (cur_line == NULL)
+        || (cur_line->type != FILE_LINE_ACTION))
+      {
+         /* Invalid "sectionid" parameter */
+         edit_free_file(file);
+         return JB_ERR_CGI_PARAMS;
+      }
+
+      /* Skip through the section to find the last line in it. */
+      while ( (cur_line->next != NULL)
+           && (cur_line->next->type != FILE_LINE_ACTION) )
+      {
+         cur_line = cur_line->next;
+         line_number++;
+      }
+   }
+
+   /* At this point, the last line in the previous section is in cur_line
+    * - add after this.  (Or if we need to add as the first line, cur_line
+    * will be NULL).
+    */
+
+   new_text = strdup("{}");
+   if (NULL == new_text)
+   {
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Allocate the new line */
+   new_line = (struct file_line *)zalloc(sizeof(*new_line));
+   if (new_line == NULL)
+   {
+      free(new_text);
+      edit_free_file(file);
+      return JB_ERR_MEMORY;
+   }
+
+   /* Fill in the data members of the new line */
+   new_line->raw = NULL;
+   new_line->prefix = NULL;
+   new_line->unprocessed = new_text;
+   new_line->type = FILE_LINE_ACTION;
+
+   if (cur_line != NULL)
+   {
+      /* Link new_line into the list, after cur_line */
+      new_line->next = cur_line->next;
+      cur_line->next = new_line;
+   }
+   else
+   {
+      /* Link new_line into the list, as first line */
+      new_line->next = file->lines;
+      file->lines = new_line;
+   }
+
+   /* Done making changes, now commit */
+
+   err = edit_write_file(file);
+   if (err)
+   {
+      /* Error writing file */
+      if (err == JB_ERR_FILE)
+      {
+         /* Read-only file. */
+         err = cgi_error_file_read_only(csp, rsp, file->identifier);
+      }
+      edit_free_file(file);
+      return err;
+   }
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_edit_actions_section_swap
+ *
+ * Description :  CGI function that swaps the order of two sections
+ *                in the actions file.  Note that this CGI can actually
+ *                swap any two arbitrary sections, but the GUI interface
+ *                currently only allows consecutive sections to be
+ *                specified.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *           f : (filename) Identifies the file to edit
+ *           v : (version) File's last-modified time
+ *          s1 : (section1) Line number of first section to swap
+ *          s2 : (section2) Line number of second section to swap
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *                JB_ERR_CGI_PARAMS if the CGI parameters are not
+ *                                  specified or not valid.
+ *
+ *********************************************************************/
+jb_err cgi_edit_actions_section_swap(struct client_state *csp,
+                                     struct http_response *rsp,
+                                     const struct map *parameters)
+{
+   unsigned section1;
+   unsigned section2;
+   struct editable_file * file;
+   struct file_line * cur_line;
+   struct file_line * prev_line;
+   struct file_line * line_before_section1;
+   struct file_line * line_start_section1;
+   struct file_line * line_end_section1;
+   struct file_line * line_after_section1;
+   struct file_line * line_before_section2;
+   struct file_line * line_start_section2;
+   struct file_line * line_end_section2;
+   struct file_line * line_after_section2;
+   unsigned line_number;
+   char * target;
+   jb_err err;
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   err = get_number_param(csp, parameters, "s1", &section1);
+   if (!err) err = get_number_param(csp, parameters, "s2", &section2);
+   if (err)
+   {
+      return err;
+   }
+
+   if (section1 > section2)
+   {
+      unsigned temp = section2;
+      section2 = section1;
+      section1 = temp;
+   }
+
+   err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
+   if (err)
+   {
+      /* No filename specified, can't read file, modified, or out of memory. */
+      return (err == JB_ERR_FILE ? JB_ERR_OK : err);
+   }
+
+   /* Start at the beginning... */
+   line_number = 1;
+   cur_line = file->lines;
+   prev_line = NULL;
+
+   /* ... find section1 ... */
+   while ((cur_line != NULL) && (line_number < section1))
+   {
+      prev_line = cur_line;
+      cur_line = cur_line->next;
+      line_number++;
+   }
+
+   if ( (cur_line == NULL)
+     || (cur_line->type != FILE_LINE_ACTION) )
+   {
+      /* Invalid "section1" parameter */
+      edit_free_file(file);
+      return JB_ERR_CGI_PARAMS;
+   }
+
+   /* If no-op, we've validated params and can skip the rest. */
+   if (section1 != section2)
+   {
+      /* ... find the end of section1 ... */
+      line_before_section1 = prev_line;
+      line_start_section1 = cur_line;
+      do
+      {
+         prev_line = cur_line;
+         cur_line = cur_line->next;
+         line_number++;
+      }
+      while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL));
+      line_end_section1 = prev_line;
+      line_after_section1 = cur_line;
+
+      /* ... find section2 ... */
+      while ((cur_line != NULL) && (line_number < section2))
+      {
+         prev_line = cur_line;
+         cur_line = cur_line->next;
+         line_number++;
+      }
+
+      if ( (cur_line == NULL)
+        || (cur_line->type != FILE_LINE_ACTION) )
+      {
+         /* Invalid "section2" parameter */
+         edit_free_file(file);
+         return JB_ERR_CGI_PARAMS;
+      }
+
+      /* ... find the end of section2 ... */
+      line_before_section2 = prev_line;
+      line_start_section2 = cur_line;
+      do
+      {
+         prev_line = cur_line;
+         cur_line = cur_line->next;
+         line_number++;
+      }
+      while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL));
+      line_end_section2 = prev_line;
+      line_after_section2 = cur_line;
+
+      /* Now have all the pointers we need. Do the swap. */
+
+      /* Change the pointer to section1 to point to section2 instead */
+      if (line_before_section1 == NULL)
+      {
+         file->lines = line_start_section2;
+      }
+      else
+      {
+         line_before_section1->next = line_start_section2;
+      }
+
+      if (line_before_section2 == line_end_section1)
+      {
+         /* Consecutive sections */
+         line_end_section2->next = line_start_section1;
+      }
+      else
+      {
+         line_end_section2->next = line_after_section1;
+         line_before_section2->next = line_start_section1;
+      }
+
+      /* Set the pointer from the end of section1 to the rest of the file */
+      line_end_section1->next = line_after_section2;
+
+      err = edit_write_file(file);
+      if (err)
+      {
+         /* Error writing file */
+         if (err == JB_ERR_FILE)
+         {
+            /* Read-only file. */
+            err = cgi_error_file_read_only(csp, rsp, file->identifier);
+         }
+         edit_free_file(file);
+         return err;
+      }
+   } /* END if (section1 != section2) */
+
+   target = strdup(CGI_PREFIX "edit-actions-list?f=");
+   string_append(&target, file->identifier);
+
+   edit_free_file(file);
+
+   if (target == NULL)
+   {
+      /* Out of memory */
+      return JB_ERR_MEMORY;
+   }
+
+   rsp->status = strdup("302 Local Redirect from Privoxy");
+   if (rsp->status == NULL)
+   {
+      free(target);
+      return JB_ERR_MEMORY;
+   }
+   err = enlist_unique_header(rsp->headers, "Location", target);
+   free(target);
+
+   return err;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  cgi_toggle
+ *
+ * Description :  CGI function that adds a new empty section to
+ *                an actions file.
+ *
+ * Parameters  :
+ *          1  :  csp = Current client state (buffers, headers, etc...)
+ *          2  :  rsp = http_response data structure for output
+ *          3  :  parameters = map of cgi parameters
+ *
+ * CGI Parameters :
+ *         set : If present, how to change toggle setting:
+ *               "enable", "disable", "toggle", or none (default).
+ *        mini : If present, use mini reply template.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *
+ *********************************************************************/
+jb_err cgi_toggle(struct client_state *csp,
+                  struct http_response *rsp,
+                  const struct map *parameters)
+{
+   struct map *exports;
+   char mode;
+   const char *template_name;
+
+   assert(csp);
+   assert(rsp);
+   assert(parameters);
+
+   if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_TOGGLE))
+   {
+      return cgi_error_disabled(csp, rsp);
+   }
+
+   mode = get_char_param(parameters, "set");
+
+   if (mode == 'E')
+   {
+      /* Enable */
+      g_bToggleIJB = 1;
+   }
+   else if (mode == 'D')
+   {
+      /* Disable */
+      g_bToggleIJB = 0;
+   }
+   else if (mode == 'T')
+   {
+      /* Toggle */
+      g_bToggleIJB = !g_bToggleIJB;
+   }
+
+   if (NULL == (exports = default_exports(csp, "toggle")))
+   {
+      return JB_ERR_MEMORY;
+   }
+
+   template_name = (get_char_param(parameters, "mini")
+                 ? "toggle-mini"
+                 : "toggle");
+
+   return template_fill_for_cgi(csp, template_name, exports, rsp);
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  javascriptify
+ *
+ * Description :  Converts a string into a form JavaScript will like.
+ *
+ *                Netscape 4's JavaScript sucks - it doesn't use 
+ *                "id" parameters, so you have to set the "name"
+ *                used to submit a form element to something JavaScript
+ *                will like.  (Or access the elements by index in an
+ *                array.  That array contains >60 elements and will
+ *                be changed whenever we add a new action to the
+ *                editor, so I'm NOT going to use indexes that have
+ *                to be figured out by hand.)
+ *
+ *                Currently the only thing we have to worry about
+ *                is "-" ==> "_" conversion.
+ *
+ *                This is a length-preserving operation so it is
+ *                carried out in-place, no memory is allocated
+ *                or freed.
+ *
+ * Parameters  :
+ *          1  :  identifier = String to make JavaScript-friendly.
+ *
+ * Returns     :  N/A
+ *
+ *********************************************************************/
+static void javascriptify(char * identifier)
+{
+   char * p = identifier;
+   while (NULL != (p = strchr(p, '-')))
+   {
+      *p++ = '_';
+   }
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  actions_to_radio
+ *
+ * Description :  Converts a actionsfile entry into settings for
+ *                radio buttons and edit boxes on a HTML form.
+ *
+ * Parameters  :
+ *          1  :  exports = List of substitutions to add to.
+ *          2  :  action  = Action to read
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *
+ *********************************************************************/
+static jb_err actions_to_radio(struct map * exports,
+                               const struct action_spec *action)
+{
+   unsigned mask = action->mask;
+   unsigned add  = action->add;
+   int mapped_param;
+   int checked;
+   char current_mode;
+
+   assert(exports);
+   assert(action);
+
+   mask = action->mask;
+   add  = action->add;
+
+   /* sanity - prevents "-feature +feature" */
+   mask |= add;
+
+
+#define DEFINE_ACTION_BOOL(name, bit)                 \
+   if (!(mask & bit))                                 \
+   {                                                  \
+      current_mode = 'n';                             \
+   }                                                  \
+   else if (add & bit)                                \
+   {                                                  \
+      current_mode = 'y';                             \
+   }                                                  \
+   else                                               \
+   {                                                  \
+      current_mode = 'x';                             \
+   }                                                  \
+   if (map_radio(exports, name, "ynx", current_mode)) \
+   {                                                  \
+      return JB_ERR_MEMORY;                           \
+   }
+
+#define DEFINE_ACTION_STRING(name, bit, index)        \
+   DEFINE_ACTION_BOOL(name, bit);                     \
+   mapped_param = 0;
+
+#define DEFINE_CGI_PARAM_RADIO(name, bit, index, value, is_default)  \
+   if (add & bit)                                                    \
+   {                                                                 \
+      checked = !strcmp(action->string[index], value);               \
+   }                                                                 \
+   else                                                              \
+   {                                                                 \
+      checked = is_default;                                          \
+   }                                                                 \
+   mapped_param |= checked;                                          \
+   if (map(exports, name "-param-" value, 1, (checked ? "checked" : ""), 1)) \
+   {                                                                 \
+      return JB_ERR_MEMORY;                                          \
+   }
+
+#define DEFINE_CGI_PARAM_CUSTOM(name, bit, index, default_val)       \
+   if (map(exports, name "-param-custom", 1,                         \
+           ((!mapped_param) ? "checked" : ""), 1))                   \
+   {                                                                 \
+      return JB_ERR_MEMORY;                                          \
+   }                                                                 \
+   if (map(exports, name "-param", 1,                                \
+           (((add & bit) && !mapped_param) ?                         \
+           action->string[index] : default_val), 1))                 \
+   {                                                                 \
+      return JB_ERR_MEMORY;                                          \
+   }
+
+#define DEFINE_CGI_PARAM_NO_RADIO(name, bit, index, default_val)     \
+   if (map(exports, name "-param", 1,                                \
+           ((add & bit) ? action->string[index] : default_val), 1))  \
+   {                                                                 \
+      return JB_ERR_MEMORY;                                          \
+   }
+
+#define DEFINE_ACTION_MULTI(name, index)              \
+   if (action->multi_add[index]->first)               \
+   {                                                  \
+      current_mode = 'y';                             \
+   }                                                  \
+   else if (action->multi_remove_all[index])          \
+   {                                                  \
+      current_mode = 'n';                             \
+   }                                                  \
+   else if (action->multi_remove[index]->first)       \
+   {                                                  \
+      current_mode = 'y';                             \
+   }                                                  \
+   else                                               \
+   {                                                  \
+      current_mode = 'x';                             \
+   }                                                  \
+   if (map_radio(exports, name, "ynx", current_mode)) \
+   {                                                  \
+      return JB_ERR_MEMORY;                           \
+   }
+
+#define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
+
+#include "actionlist.h"
+
+#undef DEFINE_ACTION_MULTI
+#undef DEFINE_ACTION_STRING
+#undef DEFINE_ACTION_BOOL
+#undef DEFINE_ACTION_ALIAS
+#undef DEFINE_CGI_PARAM_CUSTOM
+#undef DEFINE_CGI_PARAM_RADIO
+#undef DEFINE_CGI_PARAM_NO_RADIO
+
+   return JB_ERR_OK;
+}
+
+
+/*********************************************************************
+ *
+ * Function    :  actions_from_radio
+ *
+ * Description :  Converts a map of parameters passed to a CGI function
+ *                into an actionsfile entry.
+ *
+ * Parameters  :
+ *          1  :  parameters = parameters to the CGI call
+ *          2  :  action  = Action to change.  Must be valid before
+ *                          the call, actions not specified will be
+ *                          left unchanged.
+ *
+ * Returns     :  JB_ERR_OK     on success
+ *                JB_ERR_MEMORY on out-of-memory
+ *
+ *********************************************************************/
+static jb_err actions_from_radio(const struct map * parameters,
+                                 struct action_spec *action)
+{
+   static int first_time = 1;
+   const char * param;
+   char * param_dup;
+   char ch;
+   const char * js_name;
+   jb_err err = JB_ERR_OK;
+
+   assert(parameters);
+   assert(action);
+
+   /* Statics are generally a potential race condition,
+    * but in this case we're safe and don't need semaphores.
+    * Be careful if you modify this function.
+    * - Jon
+    */
+
+#define JAVASCRIPTIFY(dest_var, string)               \
+   {                                                  \
+      static char js_name_arr[] = string;             \
+      if (first_time)                                 \
+      {                                               \
+         javascriptify(js_name_arr);                  \
+      }                                               \
+      dest_var = js_name_arr;                         \
+   }                                                  \
+
+#define DEFINE_ACTION_BOOL(name, bit)                 \
+   JAVASCRIPTIFY(js_name, name);                      \
+   ch = get_char_param(parameters, js_name);          \
+   if (ch == 'Y')                                     \
+   {                                                  \
+      action->add  |= bit;                            \
+      action->mask |= bit;                            \
+   }                                                  \
+   else if (ch == 'N')                                \
+   {                                                  \
+      action->add  &= ~bit;                           \
+      action->mask &= ~bit;                           \
+   }                                                  \
+   else if (ch == 'X')                                \
+   {                                                  \
+      action->add  &= ~bit;                           \
+      action->mask |= bit;                            \
+   }                                                  \
+
+#define DEFINE_ACTION_STRING(name, bit, index)                 \
+   JAVASCRIPTIFY(js_name, name); &n