+const char actions_rcs[] = "$Id: actions.c,v ???? $";
+/*********************************************************************
+ *
+ * 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
+ * IJBSWA team. http://ijbswa.sourceforge.net
+ *
+ * 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 $
+ *
+ *********************************************************************/
+\f
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "project.h"
+#include "jcc.h"
+#include "list.h"
+#include "actions.h"
+#include "miscutil.h"
+#include "errlog.h"
+#include "loaders.h"
+
+const char actions_h_rcs[] = ACTIONS_H_VERSION;
+
+/* This structure is used to hold user-defined aliases */
+struct action_alias
+{
+ const char * name;
+ struct action_spec action[1];
+ struct action_alias * next;
+};
+
+
+/*
+ * Must declare this in this file for the above structure.
+ * FIXME: Make this static or put structure in header.
+ */
+extern int get_actions (char *line, struct action_alias * alias_list,
+ struct action_spec *cur_action);
+
+/*
+ * 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 mask; /* a bit set to "0" = remove action */
+ unsigned 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
+
+ /*
+ { "+add-header", ACTION_MASK_ALL, 0, AV_ADD_MULTI, ACTION_MULTI_ADD_HEADER },
+ { "+block", ACTION_MASK_ALL, ACTION_BLOCK },
+ { "+fast-redirects", ACTION_MASK_ALL, ACTION_FAST_REDIRECTS },
+ { "+filter", ACTION_MASK_ALL, ACTION_FILTER },
+ { "+hide-forwarded", ACTION_MASK_ALL, ACTION_HIDE_FORWARDED },
+ { "+hide-from", ACTION_MASK_ALL, ACTION_HIDE_FROM, AV_ADD_STRING, ACTION_STRING_FROM },
+ { "+hide-referer", ACTION_MASK_ALL, ACTION_HIDE_REFERER, AV_ADD_STRING, ACTION_STRING_REFERER },
+ { "+hide-referrer", ACTION_MASK_ALL, ACTION_HIDE_REFERER, AV_ADD_STRING, ACTION_STRING_REFERER },
+ { "+hide-user-agent", ACTION_MASK_ALL, ACTION_HIDE_USER_AGENT, AV_ADD_STRING, ACTION_STRING_USER_AGENT },
+ { "+image", ACTION_MASK_ALL, ACTION_IMAGE },
+ { "+no-cookies-read", ACTION_MASK_ALL, ACTION_NO_COOKIE_READ },
+ { "+no-cookies-set", ACTION_MASK_ALL, ACTION_NO_COOKIE_SET },
+ { "+no-popup", ACTION_MASK_ALL, ACTION_NO_POPUPS },
+ { "+no-popups", ACTION_MASK_ALL, ACTION_NO_POPUPS },
+ { "+vanilla-wafer", ACTION_MASK_ALL, ACTION_VANILLA_WAFER },
+ { "+wafer", ACTION_MASK_ALL, 0, AV_ADD_MULTI, ACTION_MULTI_WAFER },
+ { "-add-header", ACTION_MASK_ALL, 0, AV_REM_MULTI, ACTION_MULTI_ADD_HEADER },
+ { "-block", ~ACTION_BLOCK, 0 },
+ { "-fast-redirects", ~ACTION_FAST_REDIRECTS, 0 },
+ { "-filter", ~ACTION_FILTER, 0 },
+ { "-hide-forwarded", ~ACTION_HIDE_FORWARDED, 0 },
+ { "-hide-from", ~ACTION_HIDE_FROM, 0, AV_REM_STRING, ACTION_STRING_FROM },
+ { "-hide-referer", ~ACTION_HIDE_REFERER, 0, AV_REM_STRING, ACTION_STRING_REFERER },
+ { "-hide-referrer", ~ACTION_HIDE_REFERER, 0, AV_REM_STRING, ACTION_STRING_REFERER },
+ { "-hide-user-agent", ~ACTION_HIDE_USER_AGENT, 0, AV_REM_STRING, ACTION_STRING_USER_AGENT },
+ { "-image", ~ACTION_IMAGE, 0 },
+ { "-no-cookies-read", ~ACTION_NO_COOKIE_READ, 0 },
+ { "-no-cookies-set", ~ACTION_NO_COOKIE_SET, 0 },
+ { "-no-popup", ~ACTION_NO_POPUPS, 0 },
+ { "-no-popups", ~ACTION_NO_POPUPS, 0 },
+ { "-vanilla-wafer", ~ACTION_VANILLA_WAFER, 0 },
+ { "-wafer", ACTION_MASK_ALL, 0, AV_REM_MULTI, ACTION_MULTI_WAFER },
+*/
+ { NULL, 0, 0 } /* End marker */
+};
+
+
+/*********************************************************************
+ *
+ * Function : merge_actions
+ *
+ * Description : Merge two actions together.
+ * Similar to "cur_action += new_action".
+ *
+ * Parameters :
+ * 1 : cur_action = Current actions, to modify.
+ * 2 : new_action = Action to add.
+ *
+ * Returns : N/A
+ *
+ *********************************************************************/
+void merge_actions (struct action_spec *dest,
+ const struct action_spec *src)
+{
+ int i;
+
+ 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);
+ }
+ }
+
+ for (i = 0; i < ACTION_MULTI_COUNT; i++)
+ {
+ if (src->multi_remove_all[i])
+ {
+ /* Remove everything from dest */
+ destroy_list(dest->multi_remove[i]);
+ destroy_list(dest->multi_add[i]);
+ dest->multi_remove_all[i] = 1;
+ 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]);
+ 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]);
+ list_append_list_unique(dest->multi_remove[i], src->multi_remove[i]);
+ list_append_list_unique(dest->multi_add[i], src->multi_add[i]);
+ }
+ }
+}
+
+
+/*********************************************************************
+ *
+ * Function : copy_action
+ *
+ * Description : Copy an action_specs.
+ * Similar to "cur_action = new_action".
+ *
+ * Parameters :
+ * 1 : dest = Destination of copy.
+ * 2 : src = Source for copy.
+ *
+ * Returns : N/A
+ *
+ *********************************************************************/
+void copy_action (struct action_spec *dest,
+ const struct action_spec *src)
+{
+ int i;
+
+ dest->mask = src->mask;
+ dest->add = src->add;
+
+ for (i = 0; i < ACTION_STRING_COUNT; i++)
+ {
+ char * str = src->string[i];
+ dest->string[i] = (str ? strdup(str) : NULL);
+ }
+
+ for (i = 0; i < ACTION_MULTI_COUNT; i++)
+ {
+ dest->multi_remove_all[i] = src->multi_remove_all[i];
+ list_duplicate(dest->multi_remove[i], src->multi_remove[i]);
+ list_duplicate(dest->multi_add[i], src->multi_add[i]);
+ }
+}
+
+
+/*********************************************************************
+ *
+ * Function : free_action
+ *
+ * Description : Free an action_specs.
+ *
+ * Parameters :
+ * 1 : src = Source to free.
+ *
+ * Returns : N/A
+ *
+ *********************************************************************/
+void free_action (struct 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_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 : 0 => Ok
+ * nonzero => Mismatched {} (line was trashed anyway)
+ *
+ *********************************************************************/
+int 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 1;
+ }
+
+ *name = str;
+
+ /* parse option */
+ while (((ch = *str) != '\0') &&
+ (ch != ' ') && (ch != '\t') && (ch != '{'))
+ {
+ if (ch == '}')
+ {
+ /* error */
+ return 1;
+ }
+ 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 0;
+ }
+
+ str++;
+ *value = str;
+
+ str = strchr(str, '}');
+ if (str == NULL)
+ {
+ /* error */
+ *value = NULL;
+ return 1;
+ }
+
+ /* got value */
+ *str = '\0';
+ *line = str + 1;
+
+ chomp(*value);
+
+ return 0;
+}
+
+
+/*********************************************************************
+ *
+ * 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 : aliases = Custom alias list, or NULL for none.
+ * 3 : cur_action = Where to store the action. Caller
+ * allocates memory.
+ *
+ * Returns : 0 => Ok
+ * nonzero => Error (line was trashed anyway)
+ *
+ *********************************************************************/
+int get_actions(char *line, struct action_alias * alias_list,
+ struct action_spec *cur_action)
+{
+ memset(cur_action, '\0', sizeof(*cur_action));
+ cur_action->mask = ACTION_MASK_ALL;
+
+ while (line)
+ {
+ char * option = NULL;
+ char * value = NULL;
+
+ if (get_action_token(&line, &option, &value))
+ {
+ return 1;
+ }
+
+ 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 1;
+ }
+ /* FIXME: should validate option string here */
+ freez (cur_action->string[action->index]);
+ cur_action->string[action->index] = strdup(value);
+ 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 = cur_action->multi_remove[action->index];
+ struct list * add = cur_action->multi_add[action->index];
+
+ if ((value == NULL) || (*value == '\0'))
+ {
+ return 1;
+ }
+
+ list_remove_item(remove, value);
+ enlist_unique(add, value);
+ break;
+ }
+ case AV_REM_MULTI:
+ {
+ /* remove multi string. */
+
+ struct list * remove = cur_action->multi_remove[action->index];
+ struct list * add = cur_action->multi_add[action->index];
+
+ if ( (value == NULL) || (*value == '\0')
+ || ((*value == '*') && (value[1] == '\0')) )
+ {
+ /*
+ * no option, or option == "*".
+ *
+ * Remove *ALL*.
+ */
+ destroy_list(remove);
+ destroy_list(add);
+ 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 */
+ enlist_unique(remove, value);
+ }
+ list_remove_item(add, value);
+ }
+ break;
+ }
+ default:
+ /* Shouldn't get here unless there's memory corruption. */
+ return 1;
+ }
+ }
+ 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 1;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+/*********************************************************************
+ *
+ * Function : actions_to_text
+ *
+ * Description : Converts a actionsfile entry from numeric form
+ * ("mask" and "add") to text.
+ *
+ * Parameters :
+ * 1 : mask = As from struct url_actions
+ * 2 : add = As from struct url_actions
+ *
+ * Returns : A string. Caller must free it.
+ *
+ *********************************************************************/
+char * actions_to_text(struct action_spec *action)
+{
+ unsigned mask = action->mask;
+ unsigned add = action->add;
+ char * result = strdup("");
+ struct list * lst;
+
+ /* sanity - prevents "-feature +feature" */
+ mask |= add;
+
+
+#define DEFINE_ACTION_BOOL(__name, __bit) \
+ if (!(mask & __bit)) \
+ { \
+ result = strsav(result, " -" __name); \
+ } \
+ else if (add & __bit) \
+ { \
+ result = strsav(result, " +" __name); \
+ }
+
+#define DEFINE_ACTION_STRING(__name, __bit, __index) \
+ if (!(mask & __bit)) \
+ { \
+ result = strsav(result, " -" __name); \
+ } \
+ else if (add & __bit) \
+ { \
+ result = strsav(result, " +" __name "{"); \
+ result = strsav(result, action->string[__index]); \
+ result = strsav(result, "}"); \
+ }
+
+#define DEFINE_ACTION_MULTI(__name, __index) \
+ if (action->multi_remove_all[__index]) \
+ { \
+ result = strsav(result, " -" __name "{*}"); \
+ } \
+ else \
+ { \
+ lst = action->multi_remove[__index]->next; \
+ while (lst) \
+ { \
+ result = strsav(result, " -" __name "{"); \
+ result = strsav(result, lst->str); \
+ result = strsav(result, "}"); \
+ lst = lst->next; \
+ } \
+ } \
+ lst = action->multi_add[__index]->next; \
+ while (lst) \
+ { \
+ result = strsav(result, " +" __name "{"); \
+ result = strsav(result, lst->str); \
+ result = strsav(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
+/*
+ ACTION_MULTI_TO_TEXT ( "add-header", ACTION_MULTI_ADD_HEADER)
+ ACTION_TO_TEXT (ACTION_BLOCK, "block");
+ ACTION_TO_TEXT (ACTION_FAST_REDIRECTS, "fast-redirects");
+ ACTION_TO_TEXT (ACTION_FILTER, "filter");
+ ACTION_TO_TEXT (ACTION_HIDE_FORWARDED, "hide-forwarded");
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_FROM, "hide-from", ACTION_STRING_FROM);
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_REFERER, "hide-referer", ACTION_STRING_REFERER);
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_USER_AGENT, "hide-user-agent", ACTION_STRING_USER_AGENT);
+ ACTION_TO_TEXT (ACTION_IMAGE, "image");
+ ACTION_TO_TEXT (ACTION_NO_COOKIE_READ, "no-cookies-read");
+ ACTION_TO_TEXT (ACTION_NO_COOKIE_SET, "no-cookies-set");
+ ACTION_TO_TEXT (ACTION_NO_POPUPS, "no-popups");
+ ACTION_TO_TEXT (ACTION_VANILLA_WAFER, "vanilla-wafer");
+ ACTION_MULTI_TO_TEXT ( "wafer", ACTION_MULTI_WAFER);
+
+#undef ACTION_TO_TEXT
+#undef ACTION_STRING_TO_TEXT
+#undef ACTION_MULTI_TO_TEXT
+*/
+ return result;
+}
+
+
+/*********************************************************************
+ *
+ * Function : current_actions_to_text
+ *
+ * Description : Converts a actionsfile entry to text.
+ *
+ * Parameters :
+ * 1 : action = Action
+ *
+ * Returns : A string. Caller must free it.
+ *
+ *********************************************************************/
+char * current_action_to_text(struct current_action_spec *action)
+{
+ unsigned flags = action->flags;
+ char * result = strdup("");
+ struct list_share * lst;
+
+#define DEFINE_ACTION_BOOL(__name, __bit) \
+ if (flags & __bit) \
+ { \
+ result = strsav(result, " +" __name); \
+ } \
+ else \
+ { \
+ result = strsav(result, " -" __name); \
+ }
+
+#define DEFINE_ACTION_STRING(__name, __bit, __index) \
+ if (flags & __bit) \
+ { \
+ result = strsav(result, " +" __name "{"); \
+ result = strsav(result, action->string[__index]); \
+ result = strsav(result, "}"); \
+ } \
+ else \
+ { \
+ result = strsav(result, " -" __name); \
+ }
+
+#define DEFINE_ACTION_MULTI(__name, __index) \
+ lst = action->multi[__index]->next; \
+ if (lst == NULL) \
+ { \
+ result = strsav(result, " -" __name); \
+ } \
+ else \
+ { \
+ while (lst) \
+ { \
+ result = strsav(result, " +" __name "{"); \
+ result = strsav(result, lst->str); \
+ result = strsav(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
+/*
+
+ ACTION_MULTI_TO_TEXT ( "add-header", ACTION_MULTI_ADD_HEADER)
+ ACTION_TO_TEXT (ACTION_BLOCK, "block");
+ ACTION_TO_TEXT (ACTION_FAST_REDIRECTS, "fast-redirects");
+ ACTION_TO_TEXT (ACTION_FILTER, "filter");
+ ACTION_TO_TEXT (ACTION_HIDE_FORWARDED, "hide-forwarded");
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_FROM, "hide-from", ACTION_STRING_FROM);
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_REFERER, "hide-referer", ACTION_STRING_REFERER);
+ ACTION_STRING_TO_TEXT(ACTION_HIDE_USER_AGENT, "hide-user-agent", ACTION_STRING_USER_AGENT);
+ ACTION_TO_TEXT (ACTION_IMAGE, "image");
+ ACTION_TO_TEXT (ACTION_NO_COOKIE_READ, "no-cookies-read");
+ ACTION_TO_TEXT (ACTION_NO_COOKIE_SET, "no-cookies-set");
+ ACTION_TO_TEXT (ACTION_NO_POPUPS, "no-popups");
+ ACTION_TO_TEXT (ACTION_VANILLA_WAFER, "vanilla-wafer");
+ ACTION_MULTI_TO_TEXT ( "wafer", ACTION_MULTI_WAFER);
+
+#undef ACTION_TO_TEXT
+#undef ACTION_STRING_TO_TEXT
+#undef ACTION_MULTI_TO_TEXT
+*/
+ return result;
+}
+
+
+/*********************************************************************
+ *
+ * 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 : 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 "current_free_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 : N/A
+ *
+ *********************************************************************/
+void merge_current_action (struct current_action_spec *dest,
+ const struct action_spec *src)
+{
+ int i;
+
+ dest->flags &= src->mask;
+ dest->flags |= src->add;
+
+ for (i = 0; i < ACTION_STRING_COUNT; i++)
+ {
+ char * str = src->string[i];
+ if (str)
+ {
+ dest->string[i] = str;
+ }
+ }
+
+ for (i = 0; i < ACTION_MULTI_COUNT; i++)
+ {
+ if (src->multi_remove_all[i])
+ {
+ /* Remove everything from dest */
+ destroy_list_share(dest->multi[i]);
+ list_duplicate_share(dest->multi[i], src->multi_add[i]);
+ }
+ else
+ {
+ list_remove_list_share(dest->multi[i], src->multi_remove[i]);
+ list_append_list_unique_share(dest->multi[i], src->multi_add[i]);
+ }
+ }
+}
+
+
+/*********************************************************************
+ *
+ * Function : free_current_action
+ *
+ * Description : Free a current_action_spec.
+ *
+ * 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_MULTI_COUNT; i++)
+ {
+ destroy_list_share(src->multi[i]);
+ }
+
+ memset(src, '\0', sizeof(*src));
+}
+
+
+/*********************************************************************
+ *
+ * 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(cur->url);
+ freez(cur);
+ cur = next;
+ }
+
+}
+
+
+/*********************************************************************
+ *
+ * Function : load_actions_file
+ *
+ * Description : Read and parse a action file 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)
+{
+ static struct file_list *current_actions_file = NULL;
+
+ FILE *fp;
+
+ struct url_actions *last_perm;
+ struct url_actions *perm;
+ char buf[BUFSIZ];
+ struct file_list *fs;
+#define MODE_START_OF_FILE 1
+#define MODE_ACTIONS 2
+#define MODE_ALIAS 3
+ int mode = MODE_START_OF_FILE;
+ struct action_spec cur_action[1];
+ struct action_alias * alias_list = NULL;
+
+ memset(cur_action, '\0', sizeof(*cur_action));
+
+ if (!check_file_changed(current_actions_file, csp->config->actions_file, &fs))
+ {
+ /* No need to load */
+ if (csp)
+ {
+ csp->actions_list = current_actions_file;
+ }
+ return 0;
+ }
+ if (!fs)
+ {
+ log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error finding file: %E",
+ csp->config->actions_file);
+ 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);
+ return 1; /* never get here */
+ }
+
+ if ((fp = fopen(csp->config->actions_file, "r")) == NULL)
+ {
+ log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error opening file: %E",
+ csp->config->actions_file);
+ return 1; /* never get here */
+ }
+
+ while (read_config_line(buf, sizeof(buf), fp, fs) != 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: %s",
+ csp->config->actions_file, 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: {{ }}",
+ csp->config->actions_file);
+ return 1; /* never get here */
+ }
+
+ if (0 == strcmpic(start, "alias"))
+ {
+ /* it's an {{alias}} block */
+
+ mode = MODE_ALIAS;
+ }
+ else
+ {
+ /* invalid {{something}} block */
+ fclose(fp);
+ log_error(LOG_LEVEL_FATAL,
+ "can't load actions file '%s': invalid line: {{%s}}",
+ csp->config->actions_file, start);
+ return 1; /* never get here */
+ }
+ }
+ else
+ {
+ /* It's an actions block */
+
+ char actions_buf[BUFSIZ];
+ char * end;
+
+ /* set mode */
+ mode = MODE_ACTIONS;
+
+ /* free old action */
+ free_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 != '}')
+ {
+ /* too short */
+ fclose(fp);
+ log_error(LOG_LEVEL_FATAL,
+ "can't load actions file '%s': invalid line: %s",
+ csp->config->actions_file, buf);
+ return 1; /* never get here */
+ }
+ *end = '\0';
+
+ /* trim any whitespace immediately inside {} */
+ chomp(actions_buf);
+
+ if (*actions_buf == '\0')
+ {
+ /* too short */
+ fclose(fp);
+ log_error(LOG_LEVEL_FATAL,
+ "can't load actions file '%s': invalid line: %s",
+ csp->config->actions_file, buf);
+ return 1; /* never get here */
+ }
+
+ 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: %s",
+ csp->config->actions_file, buf);
+ return 1; /* never get here */
+ }
+ }
+ }
+ else if (mode == MODE_ALIAS)
+ {
+ /* define an alias */
+ char actions_buf[BUFSIZ];
+ struct action_alias * new_alias;
+ int more = 1;
+
+ 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: %s",
+ csp->config->actions_file, 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);
+ 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: %s",
+ csp->config->actions_file, 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: %s = %s",
+ csp->config->actions_file, 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);
+ 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': cannot create URL pattern from: %s",
+ csp->config->actions_file, 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 line is invalid: %s",
+ csp->config->actions_file, 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, mode);
+ return 1; /* never get here */
+ }
+ }
+
+ fclose(fp);
+
+ free_action(cur_action);
+
+ while (alias_list != NULL)
+ {
+ struct action_alias * next = alias_list->next;
+ freez((char *)alias_list->name);
+ free_action(alias_list->action);
+ free(alias_list);
+ alias_list = next;
+ }
+
+#ifndef SPLIT_PROXY_ARGS
+ if (!suppress_blocklists)
+ {
+ fs->proxy_args = strsav(fs->proxy_args, "</pre>");
+ }
+#endif /* ndef SPLIT_PROXY_ARGS */
+
+ /* the old one is now obsolete */
+ if (current_actions_file)
+ {
+ current_actions_file->unloader = unload_actions_file;
+ }
+
+ fs->next = files->next;
+ files->next = fs;
+ current_actions_file = fs;
+
+ if (csp)
+ {
+ csp->actions_list = fs;
+ }
+
+ return(0);
+
+}
projects / privoxy.git / commitdiff