1 #ifndef PROJECT_H_INCLUDED
2 #define PROJECT_H_INCLUDED
4 #define PROJECT_H_VERSION "$Id: project.h,v 1.93 2007/03/20 15:16:34 fabiankeil Exp $"
5 /*********************************************************************
7 * File : $Source: /cvsroot/ijbswa/current/project.h,v $
9 * Purpose : Defines data structures which are widely used in the
10 * project. Does not define any variables or functions
11 * (though it does declare some macros).
13 * Copyright : Written by and Copyright (C) 2001 - 2007 the SourceForge
14 * Privoxy team. http://www.privoxy.org/
16 * Based on the Internet Junkbuster originally written
17 * by and Copyright (C) 1997 Anonymous Coders and
18 * Junkbusters Corporation. http://www.junkbusters.com
20 * This program is free software; you can redistribute it
21 * and/or modify it under the terms of the GNU General
22 * Public License as published by the Free Software
23 * Foundation; either version 2 of the License, or (at
24 * your option) any later version.
26 * This program is distributed in the hope that it will
27 * be useful, but WITHOUT ANY WARRANTY; without even the
28 * implied warranty of MERCHANTABILITY or FITNESS FOR A
29 * PARTICULAR PURPOSE. See the GNU General Public
30 * License for more details.
32 * The GNU General Public License should be included with
33 * this file. If not, you can view it at
34 * http://www.gnu.org/copyleft/gpl.html
35 * or write to the Free Software Foundation, Inc., 59
36 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
40 * Revision 1.93 2007/03/20 15:16:34 fabiankeil
41 * Use dedicated header filter actions instead of abusing "filter".
42 * Replace "filter-client-headers" and "filter-client-headers"
43 * with "server-header-filter" and "client-header-filter".
45 * Revision 1.92 2007/03/17 15:20:05 fabiankeil
46 * New config option: enforce-blocks.
48 * Revision 1.91 2007/03/05 13:28:03 fabiankeil
49 * Add some CSP_FLAGs for the header parsers.
51 * Revision 1.90 2007/02/07 10:36:16 fabiankeil
52 * Add new http_response member to save
53 * the reason why the response was generated.
55 * Revision 1.89 2007/01/27 13:09:16 fabiankeil
56 * Add new config option "templdir" to
57 * change the templates directory.
59 * Revision 1.88 2007/01/25 13:36:59 fabiankeil
60 * Add csp->error_message for failure reasons
61 * that should be embedded into the CGI pages.
63 * Revision 1.87 2007/01/01 19:36:37 fabiankeil
64 * Integrate a modified version of Wil Mahan's
65 * zlib patch (PR #895531).
67 * Revision 1.86 2006/12/31 17:56:37 fabiankeil
68 * Added config option accept-intercepted-requests
69 * and disabled it by default.
71 * Revision 1.85 2006/12/31 15:03:31 fabiankeil
72 * Fix gcc43 compiler warnings and a comment.
74 * Revision 1.84 2006/12/21 12:57:48 fabiankeil
75 * Add config option "split-large-forms"
76 * to work around the browser bug reported
79 * Revision 1.83 2006/12/06 19:26:29 fabiankeil
80 * Moved HTTP snipplets into jcc.c. They aren't
83 * Revision 1.82 2006/09/20 15:50:31 fabiankeil
84 * Doubled size of HOSTENT_BUFFER_SIZE to mask
85 * problems with gethostbyname_r and some
86 * /etc/hosts configurations. Only a workaround
87 * until we get the real fix ready.
88 * Thanks Félix Rauch for reporting.
90 * Increased value of MAX_TRUSTED_REFERRERS from 64 to 512.
92 * Revision 1.81 2006/09/06 13:03:04 fabiankeil
93 * Respond with 400 and a short text message
94 * if the client tries to use Privoxy as FTP proxy.
96 * Revision 1.80 2006/09/06 10:43:32 fabiankeil
97 * Added config option enable-remote-http-toggle
98 * to specify if Privoxy should recognize special
99 * headers (currently only X-Filter) to change its
100 * behaviour. Disabled by default.
102 * Revision 1.79 2006/09/06 09:23:37 fabiankeil
103 * Make number of retries in case of forwarded-connect problems
104 * a config file option (forwarded-connect-retries) and use 0 as
107 * Revision 1.78 2006/08/31 16:25:06 fabiankeil
108 * Work around a buffer overflow that caused Privoxy to
109 * segfault if too many trusted referrers were used. Good
110 * enough for now, but should be replaced with a real
111 * solution after the next release.
113 * Revision 1.77 2006/08/21 12:50:51 david__schmidt
116 * Revision 1.76 2006/08/14 08:25:19 fabiankeil
117 * Split filter-headers{} into filter-client-headers{}
118 * and filter-server-headers{}.
119 * Added parse_header_time() to share some code.
120 * Replaced timegm() with mktime().
122 * Revision 1.75 2006/08/03 02:46:41 david__schmidt
123 * Incorporate Fabian Keil's patch work:
\r * http://www.fabiankeil.de/sourcecode/privoxy/
125 * Revision 1.74 2006/07/18 14:48:47 david__schmidt
126 * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
127 * with what was really the latest development (the v_3_0_branch branch)
129 * Revision 1.72.2.7 2006/01/29 23:10:56 david__schmidt
130 * Multiple filter file support
132 * Revision 1.72.2.6 2004/10/03 12:53:46 david__schmidt
133 * Add the ability to check jpeg images for invalid
134 * lengths of comment blocks. Defensive strategy
135 * against the exploit:
136 * Microsoft Security Bulletin MS04-028
137 * Buffer Overrun in JPEG Processing (GDI+) Could
138 * Allow Code Execution (833987)
139 * Enabled with +inspect-jpegs in actions files.
141 * Revision 1.72.2.5 2004/01/30 15:29:29 oes
142 * Updated the copyright note
144 * Revision 1.72.2.4 2004/01/13 16:12:14 oes
145 * Fixed double slash in USER_MANUAL_URL. Closes BR #867088.
147 * Revision 1.72.2.3 2003/03/11 11:54:37 oes
148 * Introduced RC_FLAG_* flags for use in child process return code
150 * Revision 1.72.2.2 2002/11/28 18:15:44 oes
151 * Added flag to each cgi_dispatcher that allows or denies
152 * external linking and removed const qualifier from
153 * struct list_entry.str.
155 * Revision 1.72.2.1 2002/08/10 11:25:18 oes
156 * - Include config.h for access to config data
157 * - Include <pcre*.h> depending on where they are
159 * Revision 1.72 2002/05/14 21:35:49 oes
160 * Split HELP_LINK_PREFIX into ACTIONS_HELP_PREFIX and CONFIG_HELP_PREFIX
161 * because of split in user-manual
163 * Revision 1.71 2002/05/12 21:39:36 jongfoster
164 * - Adding Doxygen-style comments to structures and #defines.
166 * Revision 1.70 2002/05/12 16:05:50 jongfoster
167 * Fixing ACTION_MASK_ALL to be unsigned long rather than
168 * just unsigned int. I don't know if anyone is porting
169 * Privoxy to 16-bit platforms, but if so, +limit-connect
170 * wouldn't have worked because of this bug.
172 * Revision 1.69 2002/05/08 16:00:16 oes
173 * Added size member to struct iob, so it can
174 * be alloced larger than needed.
176 * Revision 1.68 2002/04/26 12:56:00 oes
177 * Killed REDIRECT_URL, added USER_MANUAL_URL and HELP_LINK_PREFIX
179 * Revision 1.67 2002/04/24 02:12:43 oes
180 * - Jon's multiple AF patch:
181 * - Make csp->actions_list an array
182 * - #define MAX_AF_FILES
183 * - Moved CGI_PARAM_LEN_MAX (500) here
185 * Revision 1.66 2002/04/15 19:06:43 jongfoster
188 * Revision 1.65 2002/04/04 00:36:36 gliptak
189 * always use pcre for matching
191 * Revision 1.64 2002/04/03 22:28:03 gliptak
192 * Removed references to gnu_regex
194 * Revision 1.63 2002/03/31 17:19:00 jongfoster
195 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
197 * Revision 1.62 2002/03/26 22:48:49 swa
200 * Revision 1.61 2002/03/26 22:29:55 swa
201 * we have a new homepage!
203 * Revision 1.60 2002/03/24 15:52:17 jongfoster
204 * Changing CGI URL prefixes for new name
206 * Revision 1.59 2002/03/24 15:23:33 jongfoster
209 * Revision 1.58 2002/03/24 13:25:43 swa
210 * name change related issues
212 * Revision 1.57 2002/03/16 20:28:34 oes
213 * Added descriptions to the filters so users will know what they select in the cgi editor
215 * Revision 1.56 2002/03/13 20:27:30 oes
216 * Fixing bug with CT_TABOO
218 * Revision 1.55 2002/03/12 01:42:50 oes
219 * Introduced modular filters
221 * Revision 1.54 2002/03/09 20:03:52 jongfoster
222 * - Making various functions return int rather than size_t.
223 * (Undoing a recent change). Since size_t is unsigned on
224 * Windows, functions like read_socket that return -1 on
225 * error cannot return a size_t.
227 * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
228 * crashes, and also frequently caused JB to jump to 100%
229 * CPU and stay there. (Because it thought it had just
230 * read ((unsigned)-1) == 4Gb of data...)
232 * - The signature of write_socket has changed, it now simply
233 * returns success=0/failure=nonzero.
235 * - Trying to get rid of a few warnings --with-debug on
236 * Windows, I've introduced a new type "jb_socket". This is
237 * used for the socket file descriptors. On Windows, this
238 * is SOCKET (a typedef for unsigned). Everywhere else, it's
239 * an int. The error value can't be -1 any more, so it's
240 * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
241 * Windows it maps to the #define INVALID_SOCKET.)
243 * - The signature of bind_port has changed.
245 * Revision 1.53 2002/03/08 16:48:55 oes
246 * Added FEATURE_NO_GIFS and BUILTIN_IMAGE_MIMETYPE
248 * Revision 1.52 2002/03/07 03:46:17 oes
249 * Fixed compiler warnings
251 * Revision 1.51 2002/03/05 04:52:42 oes
252 * Deleted non-errlog debugging code
254 * Revision 1.50 2002/03/04 19:32:07 oes
255 * Changed default port to 8118
257 * Revision 1.49 2002/03/04 18:28:55 oes
258 * Deleted PID_FILE_NAME
260 * Revision 1.48 2002/03/03 14:50:40 oes
261 * Fixed CLF logging: Added ocmd member for client's request to struct http_request
263 * Revision 1.47 2002/02/20 23:15:13 jongfoster
264 * Parsing functions now handle out-of-memory gracefully by returning
267 * Revision 1.46 2002/01/17 21:06:09 jongfoster
268 * Now #defining the URLs of the config interface
270 * Minor changes to struct http_request and struct url_spec due to
271 * standardizing that struct http_request is used to represent a URL, and
272 * struct url_spec is used to represent a URL pattern. (Before, URLs were
273 * represented as seperate variables and a partially-filled-in url_spec).
275 * Revision 1.45 2002/01/09 14:33:27 oes
276 * Added HOSTENT_BUFFER_SIZE
278 * Revision 1.44 2001/12/30 14:07:32 steudten
279 * - Add signal handling (unix)
280 * - Add SIGHUP handler (unix)
281 * - Add creation of pidfile (unix)
282 * - Add action 'top' in rc file (RH)
283 * - Add entry 'SIGNALS' to manpage
284 * - Add exit message to logfile (unix)
286 * Revision 1.43 2001/11/22 21:57:51 jongfoster
287 * Making action_spec->flags into an unsigned long rather than just an
289 * Adding ACTION_NO_COOKIE_KEEP
291 * Revision 1.42 2001/11/05 21:42:41 steudten
292 * Include DBG() macro.
294 * Revision 1.41 2001/10/28 19:12:06 jongfoster
295 * Adding ijb_toupper()
297 * Revision 1.40 2001/10/26 17:40:47 oes
298 * Moved ijb_isspace and ijb_tolower to project.h
299 * Removed http->user_agent, csp->referrer and csp->accept_types
301 * Revision 1.39 2001/10/25 03:45:02 david__schmidt
302 * Adding a (void*) cast to freez() because Visual Age C++ won't expand the
303 * macro when called with a cast; so moving the cast to the macro def'n
304 * seems to both eliminate compiler warnings (on darwin and OS/2, anyway) and
305 * doesn't make macro expansion complain. Hope this works for everyone else
308 * Revision 1.38 2001/10/23 21:19:04 jongfoster
309 * New error-handling support: jb_err type and JB_ERR_xxx constants
310 * CGI functions now return a jb_err, and their parameters map is const.
311 * Support for RUNTIME_FEATUREs to enable/disable config editor
312 * Adding a few comments
314 * Revision 1.37 2001/10/14 22:14:01 jongfoster
315 * Removing name_length field from struct cgi_dispatcher, as this is
316 * now calculated at runtime from the "name" field.
318 * Revision 1.36 2001/10/10 16:45:15 oes
319 * Added LIMIT_CONNECT action and string
320 * Fixed HTTP message line termination
321 * Added CFORBIDDEN HTTP message
323 * Revision 1.35 2001/10/07 18:06:43 oes
324 * Added status member to struct http_request
326 * Revision 1.34 2001/10/07 15:45:25 oes
327 * Added url member to struct http_request and commented all
332 * Added ACTION_DOWNGRADE and ACTION_NO_COMPRESSION
334 * Replaced struct client_state members rejected,
335 * force, active and toggled_on with "flags" bitmap.
337 * Added CSP_FLAG_MODIFIED and CSP_FLAG_CHUNKED
339 * Added buffer_limit to struct configuration_spec
341 * Revision 1.33 2001/09/20 13:30:08 steudten
343 * Make freez() more secure in case of: if (exp) { free(z) ; a=*z }
344 * Last case will set z to NULL in free(z) and thats bad..
346 * Revision 1.32 2001/09/16 23:02:51 jongfoster
349 * Revision 1.31 2001/09/16 13:20:29 jongfoster
350 * Rewrite of list library. Now has seperate header and list_entry
351 * structures. Also added a large sprinking of assert()s to the list
354 * Revision 1.30 2001/09/13 23:52:00 jongfoster
355 * Support for both static and dynamically generated CGI pages
357 * Revision 1.29 2001/09/13 23:29:43 jongfoster
358 * Defining FORWARD_SPEC_INITIALIZER
360 * Revision 1.28 2001/09/13 23:05:50 jongfoster
361 * Changing the string paramater to the header parsers a "const".
363 * Revision 1.27 2001/08/05 16:06:20 jongfoster
364 * Modifiying "struct map" so that there are now separate header and
365 * "map_entry" structures. This means that functions which modify a
366 * map no longer need to return a pointer to the modified map.
367 * Also, it no longer reverses the order of the entries (which may be
368 * important with some advanced template substitutions).
370 * Revision 1.26 2001/07/30 22:08:36 jongfoster
371 * Tidying up #defines:
372 * - All feature #defines are now of the form FEATURE_xxx
373 * - Permanently turned off WIN_GUI_EDIT
374 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
376 * Revision 1.25 2001/07/29 18:43:08 jongfoster
377 * Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
380 * Revision 1.24 2001/07/25 17:20:27 oes
381 * Introduced http->user_agent
383 * Revision 1.23 2001/07/18 12:32:23 oes
384 * - Added ACTION_STRING_DEANIMATE
385 * - moved #define freez from jcc.h to project.h
387 * Revision 1.22 2001/07/15 17:51:41 jongfoster
388 * Renaming #define STATIC to STATIC_PCRE
390 * Revision 1.21 2001/07/13 14:03:19 oes
391 * - Reorganized regex header inclusion and #defines to
392 * comply to the scheme in configure.in
393 * - Added csp->content_type and its CT_* keys
394 * - Added ACTION_DEANIMATE
395 * - Removed all #ifdef PCRS
397 * Revision 1.20 2001/06/29 21:45:41 oes
398 * Indentation, CRLF->LF, Tab-> Space
400 * Revision 1.19 2001/06/29 13:33:36 oes
401 * - Improved comments
402 * - Introduced http_request.host_ip_addr_str
403 * - Introduced http_response.head_length
404 * - Introduced config.my_ip_addr_str, config.my_hostname,
405 * config.admin_address and config.proxy_info_url
406 * - Removed config.proxy_args_header and config.proxy_args_trailer,
407 * renamed config.proxy_args_invocation to config.proxy_args
408 * - Removed HTML snipplets and GIFs
409 * - Removed logentry from cancelled commit
411 * Revision 1.18 2001/06/09 10:57:39 jongfoster
412 * Adding definition of BUFFER_SIZE.
413 * Changing struct cgi_dispatcher to use "const" strings.
415 * Revision 1.17 2001/06/07 23:15:09 jongfoster
416 * Merging ACL and forward files into config file.
417 * Moving struct gateway members into struct forward_spec
418 * Removing config->proxy_args_gateways
419 * Cosmetic: Adding a few comments
421 * Revision 1.16 2001/06/04 18:31:58 swa
422 * files are now prefixed with either `confdir' or `logdir'.
423 * `make redhat-dist' replaces both entries confdir and logdir
426 * Revision 1.15 2001/06/04 11:28:53 swa
427 * redirect did not work due to missing /
429 * Revision 1.14 2001/06/03 11:03:48 oes
431 * added struct http_response,
432 * changed struct interceptors to struct cgi_dispatcher,
433 * moved HTML stuff to cgi.h
435 * Revision 1.13 2001/06/01 20:05:36 jongfoster
436 * Support for +image-blocker{}: added ACTION_IMAGE_BLOCKER
437 * constant, and removed csp->tinygif.
439 * Revision 1.12 2001/06/01 18:49:17 jongfoster
440 * Replaced "list_share" with "list" - the tiny memory gain was not
441 * worth the extra complexity.
443 * Revision 1.11 2001/06/01 10:32:47 oes
444 * Added constants for anchoring selection bitmap
446 * Revision 1.10 2001/05/31 21:33:53 jongfoster
447 * Changes for new actions file, replacing permissionsfile
448 * and parts of the config file. Also added support for
451 * Revision 1.9 2001/05/31 17:32:31 oes
453 * - Enhanced domain part globbing with infix and prefix asterisk
454 * matching and optional unanchored operation
456 * Revision 1.8 2001/05/29 20:09:15 joergs
457 * HTTP_REDIRECT_TEMPLATE fixed.
459 * Revision 1.7 2001/05/29 09:50:24 jongfoster
460 * Unified blocklist/imagelist/actionslist.
461 * File format is still under discussion, but the internal changes
464 * Also modified interceptor behaviour:
465 * - We now intercept all URLs beginning with one of the following
466 * prefixes (and *only* these prefixes):
468 * * http://ijbswa.sf.net/config/
469 * * http://ijbswa.sourceforge.net/config/
470 * - New interceptors "home page" - go to http://i.j.b/ to see it.
471 * - Internal changes so that intercepted and fast redirect pages
472 * are not replaced with an image.
473 * - Interceptors now have the option to send a binary page direct
474 * to the client. (i.e. ijb-send-banner uses this)
475 * - Implemented show-url-info interceptor. (Which is why I needed
476 * the above interceptors changes - a typical URL is
477 * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
478 * The previous mechanism would not have intercepted that, and
479 * if it had been intercepted then it then it would have replaced
482 * Revision 1.6 2001/05/27 22:17:04 oes
484 * - re_process_buffer no longer writes the modified buffer
485 * to the client, which was very ugly. It now returns the
486 * buffer, which it is then written by chat.
488 * - content_length now adjusts the Content-Length: header
489 * for modified documents rather than crunch()ing it.
490 * (Length info in csp->content_length, which is 0 for
491 * unmodified documents)
493 * - For this to work, sed() is called twice when filtering.
495 * Revision 1.5 2001/05/26 00:28:36 jongfoster
496 * Automatic reloading of config file.
497 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
498 * Most of the global variables have been moved to a new
499 * struct configuration_spec, accessed through csp->config->globalname
500 * Most of the globals remaining are used by the Win32 GUI.
502 * Revision 1.4 2001/05/22 18:46:04 oes
504 * - Enabled filtering banners by size rather than URL
505 * by adding patterns that replace all standard banner
506 * sizes with the "Junkbuster" gif to the re_filterfile
508 * - Enabled filtering WebBugs by providing a pattern
509 * which kills all 1x1 images
511 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
512 * which is selected by the (nonstandard and therefore
513 * capital) letter 'U' in the option string.
514 * It causes the quantifiers to be ungreedy by default.
515 * Appending a ? turns back to greedy (!).
517 * - Added a new interceptor ijb-send-banner, which
518 * sends back the "Junkbuster" gif. Without imagelist or
519 * MSIE detection support, or if tinygif = 1, or the
520 * URL isn't recognized as an imageurl, a lame HTML
521 * explanation is sent instead.
523 * - Added new feature, which permits blocking remote
524 * script redirects and firing back a local redirect
526 * The feature is conditionally compiled, i.e. it
527 * can be disabled with --disable-fast-redirects,
528 * plus it must be activated by a "fast-redirects"
529 * line in the config file, has its own log level
530 * and of course wants to be displayed by show-proxy-args
531 * Note: Boy, all the #ifdefs in 1001 locations and
532 * all the fumbling with configure.in and acconfig.h
533 * were *way* more work than the feature itself :-(
535 * - Because a generic redirect template was needed for
536 * this, tinygif = 3 now uses the same.
538 * - Moved GIFs, and other static HTTP response templates
543 * - Removed some >400 CRs again (Jon, you really worked
546 * Revision 1.3 2001/05/20 01:21:20 jongfoster
547 * Version 2.9.4 checkin.
548 * - Merged popupfile and cookiefile, and added control over PCRS
549 * filtering, in new "actionsfile".
550 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
551 * file error you now get a message box (in the Win32 GUI) rather
552 * than the program exiting with no explanation.
553 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
555 * - Removed tabs from "config"
556 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
557 * - Bumped up version number.
559 * Revision 1.2 2001/05/17 23:01:01 oes
560 * - Cleaned CRLF's from the sources and related files
562 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
563 * Initial import of version 2.9.3 source tree
566 *********************************************************************/
569 /* Declare struct FILE for vars and funcs. */
572 /* Need time_t for file_list */
574 /* Needed for pcre choice */
578 * Include appropriate regular expression libraries.
579 * Note that pcrs and pcre (native) are needed for cgi
580 * and are included anyway.
586 # ifdef PCRE_H_IN_SUBDIR
587 # include <pcre/pcre.h>
600 # include "pcreposix.h"
602 # ifdef PCRE_H_IN_SUBDIR
603 # include <pcre/pcreposix.h>
605 # include <pcreposix.h>
611 #endif /* def AMIGA */
615 * I don't want to have to #include all this just for the declaration
616 * of SOCKET. However, it looks like we have to...
631 typedef SOCKET jb_socket;
633 #define JB_INVALID_SOCKET INVALID_SOCKET
635 #else /* ndef _WIN32 */
638 * The type used by sockets. On UNIX it's an int. Microsoft decided to
639 * make it an unsigned.
641 typedef int jb_socket;
644 * The error value used for variables of type jb_socket. On UNIX this
645 * is -1, however Microsoft decided to make socket handles unsigned, so
646 * they use a different value.
649 #define JB_INVALID_SOCKET (-1)
651 #endif /* ndef _WIN32 */
655 * A standard error code. This should be JB_ERR_OK or one of the JB_ERR_xxx
660 #define JB_ERR_OK 0 /**< Success, no error */
661 #define JB_ERR_MEMORY 1 /**< Out of memory */
662 #define JB_ERR_CGI_PARAMS 2 /**< Missing or corrupt CGI parameters */
663 #define JB_ERR_FILE 3 /**< Error opening, reading or writing a file */
664 #define JB_ERR_PARSE 4 /**< Error parsing file */
665 #define JB_ERR_MODIFIED 5 /**< File has been modified outside of the
666 CGI actions editor. */
667 #define JB_ERR_COMPRESS 6 /**< Error on decompression */
670 * This macro is used to free a pointer that may be NULL.
671 * It also sets the variable to NULL after it's been freed.
672 * The paramater should be a simple variable without side effects.
674 #define freez(X) { if(X) { free((void*)X); X = NULL ; } }
678 * Fix a problem with Solaris. There should be no effect on other
681 * Solaris's isspace() is a macro which uses it's argument directly
682 * as an array index. Therefore we need to make sure that high-bit
683 * characters generate +ve values, and ideally we also want to make
684 * the argument match the declared parameter type of "int".
686 * Note: Remember to #include <ctype.h> if you use these macros.
688 #define ijb_toupper(__X) toupper((int)(unsigned char)(__X))
689 #define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
690 #define ijb_isspace(__X) isspace((int)(unsigned char)(__X))
693 * Use for statically allocated buffers if you have no other choice.
694 * Remember to check the length of what you write into the buffer
695 * - we don't want any buffer overflows!
697 #define BUFFER_SIZE 5000
700 * Max length of CGI parameters (arbitrary limit).
702 #define CGI_PARAM_LEN_MAX 500
705 * Buffer size for capturing struct hostent data in the
706 * gethostby(name|addr)_r library calls. Since we don't
707 * loop over gethostbyname_r, the buffer must be sufficient
708 * to accomodate multiple IN A RRs, as used in DNS round robin
709 * load balancing. W3C's wwwlib uses 1K, so that should be
710 * good enough for us, too.
713 * XXX: Temporary doubled, for some configurations
714 * 1K is still too small and we didn't get the
715 * real fix ready for inclusion.
717 #define HOSTENT_BUFFER_SIZE 2048
720 * Do not use. Originally this was so that you can
721 * say "while (FOREVER) { ...do something... }".
722 * However, this gives a warning with some compilers (e.g. VC++).
723 * Instead, use "for (;;) { ...do something... }".
728 * Default IP address to listen on, as a string.
729 * Set to "127.0.0.1".
731 #define HADDR_DEFAULT "127.0.0.1"
734 * Default port to listen on, as a number.
737 #define HADDR_PORT 8118
740 /* Forward def for struct client_state */
741 struct configuration_spec;
745 * Entry in a linked list of strings.
750 * The string pointer. It must point to a dynamically malloc()ed
751 * string or be NULL for the list functions to work. In the latter
752 * case, just be careful next time you iterate through the list in
757 /** Next entry in the linked list, or NULL if no more. */
758 struct list_entry *next;
762 * A header for a linked list of strings.
766 /** First entry in the list, or NULL if the list is empty. */
767 struct list_entry *first;
769 /** Last entry in the list, or NULL if the list is empty. */
770 struct list_entry *last;
775 * An entry in a map. This is a name=value pair.
779 /** The key for the map. */
781 /** The value associated with that key. */
783 /** The next map entry, or NULL if none. */
784 struct map_entry *next;
788 * A map from a string to another string.
789 * This is used for the paramaters passed in a HTTP GET request, and
790 * to store the exports when the CGI interface is filling in a template.
794 /** The first map entry, or NULL if the map is empty. */
795 struct map_entry *first;
796 /** The last map entry, or NULL if the map is empty. */
797 struct map_entry *last;
802 * A HTTP request. This includes the method (GET, POST) and
805 * This is also used whenever we want to match a URL against a
806 * URL pattern. This always contains the URL to match, and never
807 * a URL pattern. (See struct url_spec).
811 char *cmd; /**< Whole command line: method, URL, Version */
812 char *ocmd; /**< Backup of original cmd for CLF logging */
813 char *gpc; /**< HTTP method: GET, POST, ... */
814 char *url; /**< The URL */
815 char *ver; /**< Protocol version */
816 int status; /**< HTTP Status */
818 char *host; /**< Host part of URL */
819 int port; /**< Port of URL or 80 (default) */
820 char *path; /**< Path of URL */
821 char *hostport; /**< host[:port] */
822 int ssl; /**< Flag if protocol is https */
824 char *host_ip_addr_str; /**< String with dotted decimal representation
825 of host's IP. NULL before connect_to() */
827 char *dbuffer; /**< Buffer with '\0'-delimited domain name. */
828 char **dvec; /**< List of pointers to the strings in dbuffer. */
829 int dcount; /**< How many parts to this domain? (length of dvec) */
833 * Reasons for generating a http_response instead of delivering
834 * the requested resource. Mostly ordered the way they are checked
837 #define RSP_REASON_UNSUPPORTED 1
838 #define RSP_REASON_BLOCKED 2
839 #define RSP_REASON_UNTRUSTED 3
840 #define RSP_REASON_REDIRECTED 4
841 #define RSP_REASON_CGI_CALL 5
842 #define RSP_REASON_NO_SUCH_DOMAIN 6
843 #define RSP_REASON_FORWARDING_FAILED 7
844 #define RSP_REASON_CONNECT_FAILED 8
845 #define RSP_REASON_OUT_OF_MEMORY 9
846 #define RSP_REASON_INTERNAL_ERROR 10
849 * Response generated by CGI, blocker, or error handler
853 char *status; /**< HTTP status (string). */
854 struct list headers[1]; /**< List of header lines. */
855 char *head; /**< Formatted http response head. */
856 size_t head_length; /**< Length of http response head. */
857 char *body; /**< HTTP document body. */
858 size_t content_length; /**< Length of body, REQUIRED if binary body. */
859 int is_static; /**< Nonzero if the content will never change and
860 should be cached by the browser (e.g. images). */
861 int reason; /**< Why the response was generated in the first place. */
865 * A URL or a tag pattern.
869 /** The string which was parsed to produce this url_spec.
870 Used for debugging or display only. */
873 char *dbuffer; /**< Buffer with '\0'-delimited domain name, or NULL to match all hosts. */
874 char **dvec; /**< List of pointers to the strings in dbuffer. */
875 int dcount; /**< How many parts to this domain? (length of dvec) */
876 int unanchored; /**< Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT. */
878 int port; /**< The port number, or 0 to match all ports. */
880 char *path; /**< The source for the regex. */
881 size_t pathlen; /**< ==strlen(path). Needed for prefix matching. FIXME: Now obsolete? */
882 regex_t *preg; /**< Regex for matching path part */
883 regex_t *tag_regex; /**< Regex for matching tags */
887 * If you declare a static url_spec, this is the value to initialize it to zero.
889 #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL, NULL }
892 * Constant for host part matching in URLs. If set, indicates that the start of
893 * the pattern must match the start of the URL. E.g. this is not set for the
894 * pattern ".example.com", so that it will match both "example.com" and
895 * "www.example.com". It is set for the pattern "example.com", which makes it
896 * match "example.com" only, not "www.example.com".
898 #define ANCHOR_LEFT 1
901 * Constant for host part matching in URLs. If set, indicates that the end of
902 * the pattern must match the end of the URL. E.g. this is not set for the
903 * pattern "ad.", so that it will match any host called "ad", irrespective
904 * of how many subdomains are in the fully-qualified domain name.
906 #define ANCHOR_RIGHT 2
910 * An I/O buffer. Holds a string which can be appended to, and can have data
911 * removed from the beginning.
915 char *buf; /**< Start of buffer */
916 char *cur; /**< Start of relevant data */
917 char *eod; /**< End of relevant data */
918 size_t size; /**< Size as malloc()ed */
923 * Return the number of bytes in the I/O buffer associated with the passed
924 * client_state pointer.
927 #define IOB_PEEK(CSP) ((CSP->iob->cur > CSP->iob->eod) ? (CSP->iob->eod - CSP->iob->cur) : 0)
931 * Remove any data in the I/O buffer associated with the passed
932 * client_state pointer.
934 #define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob));
936 /* Bits for csp->content_type bitmask: */
937 #define CT_TEXT 0x0001U /**< Suitable for pcrs filtering. */
938 #define CT_GIF 0x0002U /**< Suitable for GIF filtering. */
939 #define CT_TABOO 0x0004U /**< DO NOT filter, irrespective of other flags. */
940 #define CT_JPEG 0x0008U /**< Suitable for JPEG filtering. */
942 /* Although these are not, strictly speaking, content types
943 * (they are content encodings), it is simple to handle them
946 #define CT_GZIP 0x0010U /**< gzip-compressed data. */
947 #define CT_DEFLATE 0x0020U /**< zlib-compressed data. */
950 * The mask which includes all actions.
952 #define ACTION_MASK_ALL (~0UL)
955 * The most compatible set of actions - i.e. none.
957 #define ACTION_MOST_COMPATIBLE 0x00000000UL
959 /** Action bitmap: Block the request. */
960 #define ACTION_BLOCK 0x00000001UL
961 /** Action bitmap: Deanimate if it's a GIF. */
962 #define ACTION_DEANIMATE 0x00000002UL
963 /** Action bitmap: Downgrade HTTP/1.1 to 1.0. */
964 #define ACTION_DOWNGRADE 0x00000004UL
965 /** Action bitmap: Fast redirects. */
966 #define ACTION_FAST_REDIRECTS 0x00000008UL
967 /** Action bitmap: Remove existing "Forwarded" header, and do not add another. */
968 #define ACTION_HIDE_FORWARDED 0x00000010UL
969 /** Action bitmap: Hide "From" header. */
970 #define ACTION_HIDE_FROM 0x00000020UL
971 /** Action bitmap: Hide "Referer" header. (sic - follow HTTP, not English). */
972 #define ACTION_HIDE_REFERER 0x00000040UL
973 /** Action bitmap: Hide "User-Agent" and similar headers. */
974 #define ACTION_HIDE_USER_AGENT 0x00000080UL
975 /** Action bitmap: This is an image. */
976 #define ACTION_IMAGE 0x00000100UL
977 /** Action bitmap: Sets the image blocker. */
978 #define ACTION_IMAGE_BLOCKER 0x00000200UL
979 /** Action bitmap: Prevent compression. */
980 #define ACTION_NO_COMPRESSION 0x00000400UL
981 /** Action bitmap: Change cookies to session only cookies. */
982 #define ACTION_NO_COOKIE_KEEP 0x00000800UL
983 /** Action bitmap: Block rending cookies. */
984 #define ACTION_NO_COOKIE_READ 0x00001000UL
985 /** Action bitmap: Block setting cookies. */
986 #define ACTION_NO_COOKIE_SET 0x00002000UL
987 /** Action bitmap: Filter out popups. */
988 #define ACTION_NO_POPUPS 0x00004000UL
989 /** Action bitmap: Send a vanilla wafer. */
990 #define ACTION_VANILLA_WAFER 0x00008000UL
991 /** Action bitmap: Limit CONNECT requests to safe ports. */
992 #define ACTION_LIMIT_CONNECT 0x00010000UL
993 /** Action bitmap: Inspect if it's a JPEG. */
994 #define ACTION_JPEG_INSPECT 0x00020000UL
995 /** Action bitmap: Crunch or modify "if-modified-since" header. */
996 #define ACTION_HIDE_IF_MODIFIED_SINCE 0x00040000UL
997 /** Action bitmap: Overwrite Content-Type header. */
998 #define ACTION_CONTENT_TYPE_OVERWRITE 0x00080000UL
999 /** Action bitmap: Crunch specified server header. */
1000 #define ACTION_CRUNCH_SERVER_HEADER 0x00100000UL
1001 /** Action bitmap: Crunch specified client header */
1002 #define ACTION_CRUNCH_CLIENT_HEADER 0x00200000UL
1003 /** Action bitmap: Enable text mode by force */
1004 #define ACTION_FORCE_TEXT_MODE 0x00400000UL
1005 /** Action bitmap: Enable text mode by force */
1006 #define ACTION_CRUNCH_IF_NONE_MATCH 0x00800000UL
1007 /** Action bitmap: Enable content-dispostion crunching */
1008 #define ACTION_HIDE_CONTENT_DISPOSITION 0x01000000UL
1009 /** Action bitmap: Replace or block Last-Modified header */
1010 #define ACTION_OVERWRITE_LAST_MODIFIED 0x02000000UL
1011 /** Action bitmap: Replace or block Accept-Language header */
1012 #define ACTION_HIDE_ACCEPT_LANGUAGE 0x04000000UL
1013 /** Action bitmap: Block as empty document */
1014 #define ACTION_HANDLE_AS_EMPTY_DOCUMENT 0x08000000UL
1015 /** Action bitmap: Redirect request. */
1016 #define ACTION_REDIRECT 0x10000000UL
1017 /** Action bitmap: Answer blocked Connects verbosely */
1018 #define ACTION_TREAT_FORBIDDEN_CONNECTS_LIKE_BLOCKS 0x20000000UL
1019 /** Action bitmap: Filter server headers with pcre */
1020 #define ACTION_FILTER_SERVER_HEADERS 0x40000000UL
1021 /** Action bitmap: Filter client headers with pcre */
1022 #define ACTION_FILTER_CLIENT_HEADERS 0x80000000UL
1025 /** Action string index: How to deanimate GIFs */
1026 #define ACTION_STRING_DEANIMATE 0
1027 /** Action string index: Replacement for "From:" header */
1028 #define ACTION_STRING_FROM 1
1029 /** Action string index: How to block images */
1030 #define ACTION_STRING_IMAGE_BLOCKER 2
1031 /** Action string index: Replacement for "Referer:" header */
1032 #define ACTION_STRING_REFERER 3
1033 /** Action string index: Replacement for "User-Agent:" header */
1034 #define ACTION_STRING_USER_AGENT 4
1035 /** Action string index: Legal CONNECT ports. */
1036 #define ACTION_STRING_LIMIT_CONNECT 5
1037 /** Action string index: Server headers containing this pattern are crunched*/
1038 #define ACTION_STRING_SERVER_HEADER 6
1039 /** Action string index: Client headers containing this pattern are crunched*/
1040 #define ACTION_STRING_CLIENT_HEADER 7
1041 /** Action string index: Replacement for the "Accept-Language:" header*/
1042 #define ACTION_STRING_LANGUAGE 8
1043 /** Action string index: Replacement for the "Content-Type:" header*/
1044 #define ACTION_STRING_CONTENT_TYPE 9
1045 /** Action string index: Replacement for the "content-dispostion:" header*/
1046 #define ACTION_STRING_CONTENT_DISPOSITION 10
1047 /** Action string index: Replacement for the "If-Modified-Since:" header*/
1048 #define ACTION_STRING_IF_MODIFIED_SINCE 11
1049 /** Action string index: Replacement for the "Last-Modified:" header. */
1050 #define ACTION_STRING_LAST_MODIFIED 12
1051 /** Action string index: Redirect URL */
1052 #define ACTION_STRING_REDIRECT 13
1053 /** Action string index: Decode before redirect? */
1054 #define ACTION_STRING_FAST_REDIRECTS 14
1055 /** Number of string actions. */
1056 #define ACTION_STRING_COUNT 15
1059 /* To make the ugly hack in sed easier to understand */
1060 #define CHECK_EVERY_HEADER_REMAINING 0
1063 /** Index into current_action_spec::multi[] for headers to add. */
1064 #define ACTION_MULTI_ADD_HEADER 0
1065 /** Index into current_action_spec::multi[] for headers to add. */
1066 #define ACTION_MULTI_WAFER 1
1067 /** Index into current_action_spec::multi[] for content filters to apply. */
1068 #define ACTION_MULTI_FILTER 2
1069 /** Index into current_action_spec::multi[] for server-header filters to apply. */
1070 #define ACTION_MULTI_SERVER_HEADER_FILTER 3
1071 /** Index into current_action_spec::multi[] for client-header filters to apply. */
1072 #define ACTION_MULTI_CLIENT_HEADER_FILTER 4
1073 /** Index into current_action_spec::multi[] for client-header tags to apply. */
1074 #define ACTION_MULTI_CLIENT_HEADER_TAGGER 5
1075 /** Index into current_action_spec::multi[] for server-header tags to apply. */
1076 #define ACTION_MULTI_SERVER_HEADER_TAGGER 6
1077 /** Number of multi-string actions. */
1078 #define ACTION_MULTI_COUNT 7
1082 * This structure contains a list of actions to apply to a URL.
1083 * It only contains positive instructions - no "-" options.
1084 * It is not used to store the actions list itself, only for
1085 * url_actions() to return the current values.
1087 struct current_action_spec
1089 /** Actions to apply. A bit set to "1" means perform the action. */
1090 unsigned long flags;
1093 * Paramaters for those actions that require them.
1094 * Each entry is valid if & only if the corresponding entry in "flags" is
1097 char * string[ACTION_STRING_COUNT];
1099 /** Lists of strings for multi-string actions. */
1100 struct list multi[ACTION_MULTI_COUNT][1];
1105 * This structure contains a set of changes to actions.
1106 * It can contain both positive and negative instructions.
1107 * It is used to store an entry in the actions list.
1111 unsigned long mask; /**< Actions to keep. A bit set to "0" means remove action. */
1112 unsigned long add; /**< Actions to add. A bit set to "1" means add action. */
1115 * Paramaters for those actions that require them.
1116 * Each entry is valid if & only if the corresponding entry in "flags" is
1119 char * string[ACTION_STRING_COUNT];
1121 /** Lists of strings to remove, for multi-string actions. */
1122 struct list multi_remove[ACTION_MULTI_COUNT][1];
1124 /** If nonzero, remove *all* strings from the multi-string action. */
1125 int multi_remove_all[ACTION_MULTI_COUNT];
1127 /** Lists of strings to add, for multi-string actions. */
1128 struct list multi_add[ACTION_MULTI_COUNT][1];
1133 * This structure is used to store the actions list.
1135 * It contains a URL pattern, and the chages to the actions.
1136 * It is a linked list.
1140 struct url_spec url[1]; /**< URL pattern. */
1142 struct action_spec action[1]; /**< Actions. */
1144 struct url_actions * next; /**< Next action in file, or NULL. */
1149 * Flags for use in csp->flags
1153 * Flag for csp->flags: Set if this client is processing data.
1154 * Cleared when the thread associated with this structure dies.
1156 #define CSP_FLAG_ACTIVE 0x01
1159 * Flag for csp->flags: Set if the server's reply is in "chunked"
1162 #define CSP_FLAG_CHUNKED 0x02
1165 * Flag for csp->flags: Set if this request was enforced, although it would
1166 * normally have been blocked.
1168 #define CSP_FLAG_FORCED 0x04
1171 * Flag for csp->flags: Set if any modification to the body was done.
1173 #define CSP_FLAG_MODIFIED 0x08
1176 * Flag for csp->flags: Set if request was blocked.
1178 #define CSP_FLAG_REJECTED 0x10
1181 * Flag for csp->flags: Set if we are toggled on (FEATURE_TOGGLE).
1183 #define CSP_FLAG_TOGGLED_ON 0x20
1186 * Flag for csp->flags: Set if adding the 'Connection: close' header
1187 * for the client isn't necessary.
1189 #define CSP_FLAG_CLIENT_CONNECTION_CLOSE_SET 0x00000040UL
1192 * Flag for csp->flags: Set if adding the 'Connection: close' header
1193 * for the server isn't necessary.
1195 #define CSP_FLAG_SERVER_CONNECTION_CLOSE_SET 0x00000080UL
1198 * Flag for csp->flags: Signals header parsers whether they
1199 * are parsing server or client headers.
1201 #define CSP_FLAG_CLIENT_HEADER_PARSING_DONE 0x00000100UL
1204 * Flag for csp->flags: Set if adding the Host: header
1207 #define CSP_FLAG_HOST_HEADER_IS_SET 0x00000200UL
1211 * Flags for use in return codes of child processes
1215 * Flag for process return code: Set if exiting porcess has been toggled
1216 * during its lifetime.
1218 #define RC_FLAG_TOGGLED 0x10
1221 * Flag for process return code: Set if exiting porcess has blocked its
1224 #define RC_FLAG_BLOCKED 0x20
1227 * Maximum number of actions/filter files. This limit is arbitrary - it's just used
1230 #define MAX_AF_FILES 10
1233 * The state of a Privoxy processing thread.
1237 /** The proxy's configuration */
1238 struct configuration_spec * config;
1240 /** The actions to perform on the current request */
1241 struct current_action_spec action[1];
1243 /** socket to talk to client (web browser) */
1246 /** socket to talk to server (web server or proxy) */
1249 /** Multi-purpose flag container, see CSP_FLAG_* above */
1252 /** Client PC's IP address, as reported by the accept() function.
1255 /** Client PC's IP address, as reported by the accept() function.
1259 /** Our IP address. I.e. the IP address that the client used to reach us,
1261 char *my_ip_addr_str;
1263 /** Our hostname. I.e. the reverse DNS of the IP address that the client
1264 used to reach us, as a string. */
1267 /** The URL that was requested */
1268 struct http_request http[1];
1270 /** An I/O buffer used for buffering data read from the network */
1273 /** List of all headers for this request */
1274 struct list headers[1];
1276 /** List of all tags that apply to this request */
1277 struct list tags[1];
1279 /** List of all cookies for this request */
1280 struct list cookie_list[1];
1282 /** MIME-Type key, see CT_* above */
1283 unsigned int content_type;
1285 /** The "X-Forwarded-For:" header sent by the client */
1288 /** Actions files associated with this client */
1289 struct file_list *actions_list[MAX_AF_FILES];
1291 /** pcrs job files. */
1292 struct file_list *rlist[MAX_AF_FILES];
1294 /** Length after content modification. */
1295 size_t content_length;
1297 #ifdef FEATURE_TRUST
1300 struct file_list *tlist;
1302 #endif /* def FEATURE_TRUST */
1305 * Failure reason to embedded in the CGI error page,
1306 * or NULL. Currently only used for socks errors.
1308 char *error_message;
1310 /** Next thread in linked list. Only read or modify from the main thread! */
1311 struct client_state *next;
1316 * A function to add a header
1318 typedef jb_err (*add_header_func_ptr)(struct client_state *);
1321 * A function to process a header
1323 typedef jb_err (*parser_func_ptr )(struct client_state *, char **);
1327 * List of functions to run on a list of headers
1331 /** The header prefix to match */
1334 /** The length of the prefix to match */
1337 /** The function to apply to this line */
1338 parser_func_ptr parser;
1343 * List of available CGI functions.
1345 struct cgi_dispatcher
1347 /** The URL of the CGI, relative to the CGI root. */
1348 const char * const name;
1350 /** The handler function for the CGI */
1351 jb_err (* const handler)(struct client_state *csp, struct http_response *rsp, const struct map *parameters);
1353 /** The description of the CGI, to appear on the main menu, or NULL to hide it. */
1354 const char * const description;
1356 /** A flag that indicates whether unintentional calls to this CGI can cause damage */
1362 * A data file used by Privoxy. Kept in a linked list.
1367 * This is a pointer to the data structures associated with the file.
1368 * Read-only once the structure has been created.
1373 * The unloader function.
1374 * Normally NULL. When we are finished with file (i.e. when we have
1375 * loaded a new one), set to a pointer to an unloader function.
1376 * Unloader will be called by sweep() (called from main loop) when
1377 * all clients using this file are done. This prevents threading
1380 void (*unloader)(void *);
1383 * Used internally by sweep(). Do not access from elsewhere.
1388 * File last-modified time, so we can check if file has been changed.
1389 * Read-only once the structure has been created.
1391 time_t lastmodified;
1394 * The full filename.
1399 * Pointer to next entry in the linked list of all "file_list"s.
1400 * This linked list is so that sweep() can navigate it.
1401 * Since sweep() can remove items from the list, we must be careful
1402 * to only access this value from main thread (when we know sweep
1403 * won't be running).
1405 struct file_list *next;
1409 #ifdef FEATURE_TRUST
1412 * The format of a trust file when loaded into memory.
1416 struct url_spec url[1]; /**< The URL pattern */
1417 int reject; /**< FIXME: Please document this! */
1418 struct block_spec *next; /**< Next entry in linked list */
1422 * Arbitrary limit for the number of trusted referrers.
1424 #define MAX_TRUSTED_REFERRERS 512
1426 #endif /* def FEATURE_TRUST */
1429 #define SOCKS_NONE 0 /**< Don't use a SOCKS server */
1430 #define SOCKS_4 40 /**< original SOCKS 4 protocol */
1431 #define SOCKS_4A 41 /**< as modified for hosts w/o external DNS */
1435 * How to forward a connection to a parent proxy.
1439 /** URL pattern that this forward_spec is for. */
1440 struct url_spec url[1];
1442 /** Connection type. Must be SOCKS_NONE, SOCKS_4, or SOCKS_4A. */
1445 /** SOCKS server hostname. Only valid if "type" is SOCKS_4 or SOCKS_4A. */
1448 /** SOCKS server port. */
1451 /** Parent HTTP proxy hostname, or NULL for none. */
1454 /** Parent HTTP proxy port. */
1457 /** Next entry in the linked list. */
1458 struct forward_spec *next;
1463 * Initializer for a static struct forward_spec.
1465 #define FORWARD_SPEC_INITIALIZER { { URL_SPEC_INITIALIZER }, 0, NULL, 0, NULL, 0, NULL }
1467 /* Supported filter types */
1468 #define FT_CONTENT_FILTER 0
1469 #define FT_CLIENT_HEADER_FILTER 1
1470 #define FT_SERVER_HEADER_FILTER 2
1471 #define FT_CLIENT_HEADER_TAGGER 3
1472 #define FT_SERVER_HEADER_TAGGER 4
1474 #define MAX_FILTER_TYPES 5
1477 * This struct represents one filter (one block) from
1478 * the re_filterfile. If there is more than one filter
1479 * in the file, the file will be represented by a
1480 * chained list of re_filterfile specs.
1482 struct re_filterfile_spec
1484 char *name; /**< Name from FILTER: statement in re_filterfile. */
1485 char *description; /**< Description from FILTER: statement in re_filterfile. */
1486 struct list patterns[1]; /**< The patterns from the re_filterfile. */
1487 pcrs_job *joblist; /**< The resulting compiled pcrs_jobs. */
1488 int type; /**< Filter type (content, client-header, server-header). */
1489 struct re_filterfile_spec *next; /**< The pointer for chaining. */
1495 #define ACL_PERMIT 1 /**< Accept connection request */
1496 #define ACL_DENY 2 /**< Reject connection request */
1499 * An IP address pattern. Used to specify networks in the ACL.
1501 struct access_control_addr
1503 unsigned long addr; /**< The IP address as an integer. */
1504 unsigned long mask; /**< The network mask as an integer. */
1505 unsigned long port; /**< The port number. */
1509 * An access control list (ACL) entry.
1511 * This is a linked list.
1513 struct access_control_list
1515 struct access_control_addr src[1]; /**< Client IP address */
1516 struct access_control_addr dst[1]; /**< Website or parent proxy IP address */
1518 short action; /**< ACL_PERMIT or ACL_DENY */
1519 struct access_control_list *next; /**< The next entry in the ACL. */
1522 #endif /* def FEATURE_ACL */
1525 /** Maximum number of loaders (actions, re_filter, ...) */
1529 /** configuration_spec::feature_flags: CGI actions editor. */
1530 #define RUNTIME_FEATURE_CGI_EDIT_ACTIONS 1
1532 /** configuration_spec::feature_flags: Web-based toggle. */
1533 #define RUNTIME_FEATURE_CGI_TOGGLE 2
1535 /** configuration_spec::feature_flags: HTTP-header-based toggle. */
1536 #define RUNTIME_FEATURE_HTTP_TOGGLE 4
1538 /** configuration_spec::feature_flags: Split large forms to limit the number of GET arguments. */
1539 #define RUNTIME_FEATURE_SPLIT_LARGE_FORMS 8
1541 /** configuration_spec::feature_flags: Check the host header for requests with host-less request lines. */
1542 #define RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS 16
1544 /** configuration_spec::feature_flags: Don't allow to circumvent blocks with the force prefix. */
1545 #define RUNTIME_FEATURE_ENFORCE_BLOCKS 32
1549 * Data loaded from the configuration file.
1551 * (Anomaly: toggle is still handled through a global, not this structure)
1553 struct configuration_spec
1558 /** Nonzero to enable multithreading. */
1562 * Bitmask of features that can be enabled/disabled through the config
1563 * file. Currently defined bits:
1565 * - RUNTIME_FEATURE_CGI_EDIT_ACTIONS
1566 * - RUNTIME_FEATURE_CGI_TOGGLE
1567 * - RUNTIME_FEATURE_HTTP_TOGGLE
1568 * - RUNTIME_FEATURE_SPLIT_LARGE_FORMS
1570 unsigned feature_flags;
1572 /** The log file name. */
1573 const char *logfile;
1575 /** The config file directory. */
1576 const char *confdir;
1578 /** The directory for customized CGI templates. */
1579 const char *templdir;
1581 /** The log file directory. */
1584 /** The full paths to the actions files. */
1585 const char *actions_file[MAX_AF_FILES];
1587 /** The short names of the actions files. */
1588 const char *actions_file_short[MAX_AF_FILES];
1590 /** The administrator's email address */
1591 char *admin_address;
1593 /** A URL with info on this proxy */
1594 char *proxy_info_url;
1596 /** URL to the user manual (on our website or local copy) */
1599 /** The file names of the pcre filter files. */
1600 const char *re_filterfile[MAX_AF_FILES];
1602 /** The short names of the pcre filter files. */
1603 const char *re_filterfile_short[MAX_AF_FILES];
1605 #ifdef FEATURE_COOKIE_JAR
1607 /** The file name of the cookie jar file */
1608 const char * jarfile;
1610 /** The handle to the cookie jar file */
1613 #endif /* def FEATURE_COOKIE_JAR */
1615 /** IP address to bind to. Defaults to HADDR_DEFAULT == 127.0.0.1. */
1618 /** Port to bind to. Defaults to HADDR_PORT == 8118. */
1621 /** Size limit for IOB */
1622 size_t buffer_limit;
1624 #ifdef FEATURE_TRUST
1626 /** The file name of the trust file. */
1627 const char * trustfile;
1629 /** FIXME: DOCME: Document this. */
1630 struct list trust_info[1];
1632 /** FIXME: DOCME: Document this. */
1633 struct url_spec *trust_list[MAX_TRUSTED_REFERRERS];
1635 #endif /* def FEATURE_TRUST */
1639 /** The access control list (ACL). */
1640 struct access_control_list *acl;
1642 #endif /* def FEATURE_ACL */
1644 /** Information about parent proxies (forwarding). */
1645 struct forward_spec *forward;
1647 /** Number of retries in case a forwarded connection attempt fails */
1648 int forwarded_connect_retries;
1650 /** All options from the config file, HTML-formatted. */
1653 /** The configuration file object. */
1654 struct file_list *config_file_list;
1656 /** List of loaders */
1657 int (*loaders[NLOADERS])(struct client_state *);
1659 /** Nonzero if we need to bind() to the new port. */
1663 /** Calculates the number of elements in an array, using sizeof. */
1664 #define SZ(X) (sizeof(X) / sizeof(*X))
1666 #ifdef FEATURE_FORCE_LOAD
1667 /** The force load URL prefix. */
1668 #define FORCE_PREFIX "/PRIVOXY-FORCE"
1669 #endif /* def FEATURE_FORCE_LOAD */
1671 #ifdef FEATURE_NO_GIFS
1672 /** The MIME type for images ("image/png" or "image/gif"). */
1673 #define BUILTIN_IMAGE_MIMETYPE "image/png"
1675 #define BUILTIN_IMAGE_MIMETYPE "image/gif"
1676 #endif /* def FEATURE_NO_GIFS */
1683 /** URL for the Privoxy home page. */
1684 #define HOME_PAGE_URL "http://www.privoxy.org/"
1686 /** URL for the Privoxy user manual. */
1687 #define USER_MANUAL_URL HOME_PAGE_URL VERSION "/user-manual/"
1689 /** Prefix for actions help links (append to USER_MANUAL_URL). */
1690 #define ACTIONS_HELP_PREFIX "actions-file.html#"
1692 /** Prefix for config option help links (append to USER_MANUAL_URL). */
1693 #define CONFIG_HELP_PREFIX "config.html#"
1696 * The "hosts" to intercept and display CGI pages.
1697 * First one is a hostname only, second one can specify host and path.
1700 * 1) Do not specify the http: prefix
1701 * 2) CGI_SITE_2_PATH must not end with /, one will be added automatically.
1702 * 3) CGI_SITE_2_PATH must start with /, unless it is the empty string.
1704 #define CGI_SITE_1_HOST "p.p"
1705 #define CGI_SITE_2_HOST "config.privoxy.org"
1706 #define CGI_SITE_2_PATH ""
1709 * The prefix for CGI pages. Written out in generated HTML.
1710 * INCLUDES the trailing slash.
1712 #define CGI_PREFIX "http://" CGI_SITE_2_HOST CGI_SITE_2_PATH "/"
1718 #endif /* ndef PROJECT_H_INCLUDED */