1 #ifndef PROJECT_H_INCLUDED
2 #define PROJECT_H_INCLUDED
4 #define PROJECT_H_VERSION "$Id: project.h,v 1.112 2008/04/06 15:18:34 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) 2001-2008 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 1.112 2008/04/06 15:18:34 fabiankeil
41 * Oh well, rename the --enable-pcre-host-patterns option to
42 * --enable-extended-host-patterns as it's not really PCRE syntax.
44 * Revision 1.111 2008/04/06 14:54:26 fabiankeil
45 * Use PCRE syntax in host patterns when configured
46 * with --enable-pcre-host-patterns.
48 * Revision 1.110 2008/03/29 12:13:46 fabiankeil
49 * Remove send-wafer and send-vanilla-wafer actions.
51 * Revision 1.109 2008/03/28 15:13:41 fabiankeil
52 * Remove inspect-jpegs action.
54 * Revision 1.108 2008/03/27 18:27:36 fabiankeil
55 * Remove kill-popups action.
57 * Revision 1.107 2008/03/26 18:07:08 fabiankeil
58 * Add hostname directive. Closes PR#1918189.
60 * Revision 1.106 2008/03/24 11:21:03 fabiankeil
61 * Share the action settings for multiple patterns in the same
62 * section so we waste less memory for gigantic block lists
63 * (and load them slightly faster). Reported by Franz Schwartau.
65 * Revision 1.105 2008/03/21 11:16:27 fabiankeil
66 * Garbage-collect csp->my_ip_addr_str and csp->my_hostname.
68 * Revision 1.104 2008/03/04 18:30:40 fabiankeil
69 * Remove the treat-forbidden-connects-like-blocks action. We now
70 * use the "blocked" page for forbidden CONNECT requests by default.
72 * Revision 1.103 2008/03/01 14:00:45 fabiankeil
73 * Let the block action take the reason for the block
74 * as argument and show it on the "blocked" page.
76 * Revision 1.102 2008/02/03 13:46:14 fabiankeil
77 * Add SOCKS5 support. Patch #1862863 by Eric M. Hopper with minor changes.
79 * Revision 1.101 2007/12/07 18:29:23 fabiankeil
80 * Remove now-obsolete csp member x_forwarded.
82 * Revision 1.100 2007/09/02 13:42:11 fabiankeil
83 * - Allow port lists in url patterns.
84 * - Ditch unused url_spec member pathlen.
86 * Revision 1.99 2007/07/21 11:51:36 fabiankeil
87 * As Hal noticed, checking dispatch_cgi() as the last cruncher
88 * looks like a bug if CGI requests are blocked unintentionally,
89 * so don't do it unless the user enabled the new config option
90 * "allow-cgi-request-crunching".
92 * Revision 1.98 2007/07/14 07:31:26 fabiankeil
93 * Add new csp->content_type flag (CT_DECLARED).
95 * Revision 1.97 2007/05/27 12:38:08 fabiankeil
96 * - Remove some left-overs from the switch to dedicated header filters.
97 * - Adjust "X-Filter: No" to disable dedicated header filters.
98 * - Prepare for forward-override{}
100 * Revision 1.96 2007/05/14 10:41:15 fabiankeil
101 * Ditch the csp member cookie_list[] which isn't used anymore.
103 * Revision 1.95 2007/04/30 15:02:19 fabiankeil
104 * Introduce dynamic pcrs jobs that can resolve variables.
106 * Revision 1.94 2007/04/15 16:39:21 fabiankeil
107 * Introduce tags as alternative way to specify which
108 * actions apply to a request. At the moment tags can be
109 * created based on client and server headers.
111 * Revision 1.93 2007/03/20 15:16:34 fabiankeil
112 * Use dedicated header filter actions instead of abusing "filter".
113 * Replace "filter-client-headers" and "filter-client-headers"
114 * with "server-header-filter" and "client-header-filter".
116 * Revision 1.92 2007/03/17 15:20:05 fabiankeil
117 * New config option: enforce-blocks.
119 * Revision 1.91 2007/03/05 13:28:03 fabiankeil
120 * Add some CSP_FLAGs for the header parsers.
122 * Revision 1.90 2007/02/07 10:36:16 fabiankeil
123 * Add new http_response member to save
124 * the reason why the response was generated.
126 * Revision 1.89 2007/01/27 13:09:16 fabiankeil
127 * Add new config option "templdir" to
128 * change the templates directory.
130 * Revision 1.88 2007/01/25 13:36:59 fabiankeil
131 * Add csp->error_message for failure reasons
132 * that should be embedded into the CGI pages.
134 * Revision 1.87 2007/01/01 19:36:37 fabiankeil
135 * Integrate a modified version of Wil Mahan's
136 * zlib patch (PR #895531).
138 * Revision 1.86 2006/12/31 17:56:37 fabiankeil
139 * Added config option accept-intercepted-requests
140 * and disabled it by default.
142 * Revision 1.85 2006/12/31 15:03:31 fabiankeil
143 * Fix gcc43 compiler warnings and a comment.
145 * Revision 1.84 2006/12/21 12:57:48 fabiankeil
146 * Add config option "split-large-forms"
147 * to work around the browser bug reported
150 * Revision 1.83 2006/12/06 19:26:29 fabiankeil
151 * Moved HTTP snipplets into jcc.c. They aren't
152 * used anywhere else.
154 * Revision 1.82 2006/09/20 15:50:31 fabiankeil
155 * Doubled size of HOSTENT_BUFFER_SIZE to mask
156 * problems with gethostbyname_r and some
157 * /etc/hosts configurations. Only a workaround
158 * until we get the real fix ready.
159 * Thanks FĂ©lix Rauch for reporting.
161 * Increased value of MAX_TRUSTED_REFERRERS from 64 to 512.
163 * Revision 1.81 2006/09/06 13:03:04 fabiankeil
164 * Respond with 400 and a short text message
165 * if the client tries to use Privoxy as FTP proxy.
167 * Revision 1.80 2006/09/06 10:43:32 fabiankeil
168 * Added config option enable-remote-http-toggle
169 * to specify if Privoxy should recognize special
170 * headers (currently only X-Filter) to change its
171 * behaviour. Disabled by default.
173 * Revision 1.79 2006/09/06 09:23:37 fabiankeil
174 * Make number of retries in case of forwarded-connect problems
175 * a config file option (forwarded-connect-retries) and use 0 as
178 * Revision 1.78 2006/08/31 16:25:06 fabiankeil
179 * Work around a buffer overflow that caused Privoxy to
180 * segfault if too many trusted referrers were used. Good
181 * enough for now, but should be replaced with a real
182 * solution after the next release.
184 * Revision 1.77 2006/08/21 12:50:51 david__schmidt
187 * Revision 1.76 2006/08/14 08:25:19 fabiankeil
188 * Split filter-headers{} into filter-client-headers{}
189 * and filter-server-headers{}.
190 * Added parse_header_time() to share some code.
191 * Replaced timegm() with mktime().
193 * Revision 1.75 2006/08/03 02:46:41 david__schmidt
194 * Incorporate Fabian Keil's patch work:
\r * http://www.fabiankeil.de/sourcecode/privoxy/
196 * Revision 1.74 2006/07/18 14:48:47 david__schmidt
197 * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
198 * with what was really the latest development (the v_3_0_branch branch)
200 * Revision 1.72.2.7 2006/01/29 23:10:56 david__schmidt
201 * Multiple filter file support
203 * Revision 1.72.2.6 2004/10/03 12:53:46 david__schmidt
204 * Add the ability to check jpeg images for invalid
205 * lengths of comment blocks. Defensive strategy
206 * against the exploit:
207 * Microsoft Security Bulletin MS04-028
208 * Buffer Overrun in JPEG Processing (GDI+) Could
209 * Allow Code Execution (833987)
210 * Enabled with +inspect-jpegs in actions files.
212 * Revision 1.72.2.5 2004/01/30 15:29:29 oes
213 * Updated the copyright note
215 * Revision 1.72.2.4 2004/01/13 16:12:14 oes
216 * Fixed double slash in USER_MANUAL_URL. Closes BR #867088.
218 * Revision 1.72.2.3 2003/03/11 11:54:37 oes
219 * Introduced RC_FLAG_* flags for use in child process return code
221 * Revision 1.72.2.2 2002/11/28 18:15:44 oes
222 * Added flag to each cgi_dispatcher that allows or denies
223 * external linking and removed const qualifier from
224 * struct list_entry.str.
226 * Revision 1.72.2.1 2002/08/10 11:25:18 oes
227 * - Include config.h for access to config data
228 * - Include <pcre*.h> depending on where they are
230 * Revision 1.72 2002/05/14 21:35:49 oes
231 * Split HELP_LINK_PREFIX into ACTIONS_HELP_PREFIX and CONFIG_HELP_PREFIX
232 * because of split in user-manual
234 * Revision 1.71 2002/05/12 21:39:36 jongfoster
235 * - Adding Doxygen-style comments to structures and #defines.
237 * Revision 1.70 2002/05/12 16:05:50 jongfoster
238 * Fixing ACTION_MASK_ALL to be unsigned long rather than
239 * just unsigned int. I don't know if anyone is porting
240 * Privoxy to 16-bit platforms, but if so, +limit-connect
241 * wouldn't have worked because of this bug.
243 * Revision 1.69 2002/05/08 16:00:16 oes
244 * Added size member to struct iob, so it can
245 * be alloced larger than needed.
247 * Revision 1.68 2002/04/26 12:56:00 oes
248 * Killed REDIRECT_URL, added USER_MANUAL_URL and HELP_LINK_PREFIX
250 * Revision 1.67 2002/04/24 02:12:43 oes
251 * - Jon's multiple AF patch:
252 * - Make csp->actions_list an array
253 * - #define MAX_AF_FILES
254 * - Moved CGI_PARAM_LEN_MAX (500) here
256 * Revision 1.66 2002/04/15 19:06:43 jongfoster
259 * Revision 1.65 2002/04/04 00:36:36 gliptak
260 * always use pcre for matching
262 * Revision 1.64 2002/04/03 22:28:03 gliptak
263 * Removed references to gnu_regex
265 * Revision 1.63 2002/03/31 17:19:00 jongfoster
266 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
268 * Revision 1.62 2002/03/26 22:48:49 swa
271 * Revision 1.61 2002/03/26 22:29:55 swa
272 * we have a new homepage!
274 * Revision 1.60 2002/03/24 15:52:17 jongfoster
275 * Changing CGI URL prefixes for new name
277 * Revision 1.59 2002/03/24 15:23:33 jongfoster
280 * Revision 1.58 2002/03/24 13:25:43 swa
281 * name change related issues
283 * Revision 1.57 2002/03/16 20:28:34 oes
284 * Added descriptions to the filters so users will know what they select in the cgi editor
286 * Revision 1.56 2002/03/13 20:27:30 oes
287 * Fixing bug with CT_TABOO
289 * Revision 1.55 2002/03/12 01:42:50 oes
290 * Introduced modular filters
292 * Revision 1.54 2002/03/09 20:03:52 jongfoster
293 * - Making various functions return int rather than size_t.
294 * (Undoing a recent change). Since size_t is unsigned on
295 * Windows, functions like read_socket that return -1 on
296 * error cannot return a size_t.
298 * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
299 * crashes, and also frequently caused JB to jump to 100%
300 * CPU and stay there. (Because it thought it had just
301 * read ((unsigned)-1) == 4Gb of data...)
303 * - The signature of write_socket has changed, it now simply
304 * returns success=0/failure=nonzero.
306 * - Trying to get rid of a few warnings --with-debug on
307 * Windows, I've introduced a new type "jb_socket". This is
308 * used for the socket file descriptors. On Windows, this
309 * is SOCKET (a typedef for unsigned). Everywhere else, it's
310 * an int. The error value can't be -1 any more, so it's
311 * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
312 * Windows it maps to the #define INVALID_SOCKET.)
314 * - The signature of bind_port has changed.
316 * Revision 1.53 2002/03/08 16:48:55 oes
317 * Added FEATURE_NO_GIFS and BUILTIN_IMAGE_MIMETYPE
319 * Revision 1.52 2002/03/07 03:46:17 oes
320 * Fixed compiler warnings
322 * Revision 1.51 2002/03/05 04:52:42 oes
323 * Deleted non-errlog debugging code
325 * Revision 1.50 2002/03/04 19:32:07 oes
326 * Changed default port to 8118
328 * Revision 1.49 2002/03/04 18:28:55 oes
329 * Deleted PID_FILE_NAME
331 * Revision 1.48 2002/03/03 14:50:40 oes
332 * Fixed CLF logging: Added ocmd member for client's request to struct http_request
334 * Revision 1.47 2002/02/20 23:15:13 jongfoster
335 * Parsing functions now handle out-of-memory gracefully by returning
338 * Revision 1.46 2002/01/17 21:06:09 jongfoster
339 * Now #defining the URLs of the config interface
341 * Minor changes to struct http_request and struct url_spec due to
342 * standardizing that struct http_request is used to represent a URL, and
343 * struct url_spec is used to represent a URL pattern. (Before, URLs were
344 * represented as seperate variables and a partially-filled-in url_spec).
346 * Revision 1.45 2002/01/09 14:33:27 oes
347 * Added HOSTENT_BUFFER_SIZE
349 * Revision 1.44 2001/12/30 14:07:32 steudten
350 * - Add signal handling (unix)
351 * - Add SIGHUP handler (unix)
352 * - Add creation of pidfile (unix)
353 * - Add action 'top' in rc file (RH)
354 * - Add entry 'SIGNALS' to manpage
355 * - Add exit message to logfile (unix)
357 * Revision 1.43 2001/11/22 21:57:51 jongfoster
358 * Making action_spec->flags into an unsigned long rather than just an
360 * Adding ACTION_NO_COOKIE_KEEP
362 * Revision 1.42 2001/11/05 21:42:41 steudten
363 * Include DBG() macro.
365 * Revision 1.41 2001/10/28 19:12:06 jongfoster
366 * Adding ijb_toupper()
368 * Revision 1.40 2001/10/26 17:40:47 oes
369 * Moved ijb_isspace and ijb_tolower to project.h
370 * Removed http->user_agent, csp->referrer and csp->accept_types
372 * Revision 1.39 2001/10/25 03:45:02 david__schmidt
373 * Adding a (void*) cast to freez() because Visual Age C++ won't expand the
374 * macro when called with a cast; so moving the cast to the macro def'n
375 * seems to both eliminate compiler warnings (on darwin and OS/2, anyway) and
376 * doesn't make macro expansion complain. Hope this works for everyone else
379 * Revision 1.38 2001/10/23 21:19:04 jongfoster
380 * New error-handling support: jb_err type and JB_ERR_xxx constants
381 * CGI functions now return a jb_err, and their parameters map is const.
382 * Support for RUNTIME_FEATUREs to enable/disable config editor
383 * Adding a few comments
385 * Revision 1.37 2001/10/14 22:14:01 jongfoster
386 * Removing name_length field from struct cgi_dispatcher, as this is
387 * now calculated at runtime from the "name" field.
389 * Revision 1.36 2001/10/10 16:45:15 oes
390 * Added LIMIT_CONNECT action and string
391 * Fixed HTTP message line termination
392 * Added CFORBIDDEN HTTP message
394 * Revision 1.35 2001/10/07 18:06:43 oes
395 * Added status member to struct http_request
397 * Revision 1.34 2001/10/07 15:45:25 oes
398 * Added url member to struct http_request and commented all
403 * Added ACTION_DOWNGRADE and ACTION_NO_COMPRESSION
405 * Replaced struct client_state members rejected,
406 * force, active and toggled_on with "flags" bitmap.
408 * Added CSP_FLAG_MODIFIED and CSP_FLAG_CHUNKED
410 * Added buffer_limit to struct configuration_spec
412 * Revision 1.33 2001/09/20 13:30:08 steudten
414 * Make freez() more secure in case of: if (exp) { free(z) ; a=*z }
415 * Last case will set z to NULL in free(z) and thats bad..
417 * Revision 1.32 2001/09/16 23:02:51 jongfoster
420 * Revision 1.31 2001/09/16 13:20:29 jongfoster
421 * Rewrite of list library. Now has seperate header and list_entry
422 * structures. Also added a large sprinking of assert()s to the list
425 * Revision 1.30 2001/09/13 23:52:00 jongfoster
426 * Support for both static and dynamically generated CGI pages
428 * Revision 1.29 2001/09/13 23:29:43 jongfoster
429 * Defining FORWARD_SPEC_INITIALIZER
431 * Revision 1.28 2001/09/13 23:05:50 jongfoster
432 * Changing the string paramater to the header parsers a "const".
434 * Revision 1.27 2001/08/05 16:06:20 jongfoster
435 * Modifiying "struct map" so that there are now separate header and
436 * "map_entry" structures. This means that functions which modify a
437 * map no longer need to return a pointer to the modified map.
438 * Also, it no longer reverses the order of the entries (which may be
439 * important with some advanced template substitutions).
441 * Revision 1.26 2001/07/30 22:08:36 jongfoster
442 * Tidying up #defines:
443 * - All feature #defines are now of the form FEATURE_xxx
444 * - Permanently turned off WIN_GUI_EDIT
445 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
447 * Revision 1.25 2001/07/29 18:43:08 jongfoster
448 * Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
451 * Revision 1.24 2001/07/25 17:20:27 oes
452 * Introduced http->user_agent
454 * Revision 1.23 2001/07/18 12:32:23 oes
455 * - Added ACTION_STRING_DEANIMATE
456 * - moved #define freez from jcc.h to project.h
458 * Revision 1.22 2001/07/15 17:51:41 jongfoster
459 * Renaming #define STATIC to STATIC_PCRE
461 * Revision 1.21 2001/07/13 14:03:19 oes
462 * - Reorganized regex header inclusion and #defines to
463 * comply to the scheme in configure.in
464 * - Added csp->content_type and its CT_* keys
465 * - Added ACTION_DEANIMATE
466 * - Removed all #ifdef PCRS
468 * Revision 1.20 2001/06/29 21:45:41 oes
469 * Indentation, CRLF->LF, Tab-> Space
471 * Revision 1.19 2001/06/29 13:33:36 oes
472 * - Improved comments
473 * - Introduced http_request.host_ip_addr_str
474 * - Introduced http_response.head_length
475 * - Introduced config.my_ip_addr_str, config.my_hostname,
476 * config.admin_address and config.proxy_info_url
477 * - Removed config.proxy_args_header and config.proxy_args_trailer,
478 * renamed config.proxy_args_invocation to config.proxy_args
479 * - Removed HTML snipplets and GIFs
480 * - Removed logentry from cancelled commit
482 * Revision 1.18 2001/06/09 10:57:39 jongfoster
483 * Adding definition of BUFFER_SIZE.
484 * Changing struct cgi_dispatcher to use "const" strings.
486 * Revision 1.17 2001/06/07 23:15:09 jongfoster
487 * Merging ACL and forward files into config file.
488 * Moving struct gateway members into struct forward_spec
489 * Removing config->proxy_args_gateways
490 * Cosmetic: Adding a few comments
492 * Revision 1.16 2001/06/04 18:31:58 swa
493 * files are now prefixed with either `confdir' or `logdir'.
494 * `make redhat-dist' replaces both entries confdir and logdir
497 * Revision 1.15 2001/06/04 11:28:53 swa
498 * redirect did not work due to missing /
500 * Revision 1.14 2001/06/03 11:03:48 oes
502 * added struct http_response,
503 * changed struct interceptors to struct cgi_dispatcher,
504 * moved HTML stuff to cgi.h
506 * Revision 1.13 2001/06/01 20:05:36 jongfoster
507 * Support for +image-blocker{}: added ACTION_IMAGE_BLOCKER
508 * constant, and removed csp->tinygif.
510 * Revision 1.12 2001/06/01 18:49:17 jongfoster
511 * Replaced "list_share" with "list" - the tiny memory gain was not
512 * worth the extra complexity.
514 * Revision 1.11 2001/06/01 10:32:47 oes
515 * Added constants for anchoring selection bitmap
517 * Revision 1.10 2001/05/31 21:33:53 jongfoster
518 * Changes for new actions file, replacing permissionsfile
519 * and parts of the config file. Also added support for
522 * Revision 1.9 2001/05/31 17:32:31 oes
524 * - Enhanced domain part globbing with infix and prefix asterisk
525 * matching and optional unanchored operation
527 * Revision 1.8 2001/05/29 20:09:15 joergs
528 * HTTP_REDIRECT_TEMPLATE fixed.
530 * Revision 1.7 2001/05/29 09:50:24 jongfoster
531 * Unified blocklist/imagelist/actionslist.
532 * File format is still under discussion, but the internal changes
535 * Also modified interceptor behaviour:
536 * - We now intercept all URLs beginning with one of the following
537 * prefixes (and *only* these prefixes):
539 * * http://ijbswa.sf.net/config/
540 * * http://ijbswa.sourceforge.net/config/
541 * - New interceptors "home page" - go to http://i.j.b/ to see it.
542 * - Internal changes so that intercepted and fast redirect pages
543 * are not replaced with an image.
544 * - Interceptors now have the option to send a binary page direct
545 * to the client. (i.e. ijb-send-banner uses this)
546 * - Implemented show-url-info interceptor. (Which is why I needed
547 * the above interceptors changes - a typical URL is
548 * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
549 * The previous mechanism would not have intercepted that, and
550 * if it had been intercepted then it then it would have replaced
553 * Revision 1.6 2001/05/27 22:17:04 oes
555 * - re_process_buffer no longer writes the modified buffer
556 * to the client, which was very ugly. It now returns the
557 * buffer, which it is then written by chat.
559 * - content_length now adjusts the Content-Length: header
560 * for modified documents rather than crunch()ing it.
561 * (Length info in csp->content_length, which is 0 for
562 * unmodified documents)
564 * - For this to work, sed() is called twice when filtering.
566 * Revision 1.5 2001/05/26 00:28:36 jongfoster
567 * Automatic reloading of config file.
568 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
569 * Most of the global variables have been moved to a new
570 * struct configuration_spec, accessed through csp->config->globalname
571 * Most of the globals remaining are used by the Win32 GUI.
573 * Revision 1.4 2001/05/22 18:46:04 oes
575 * - Enabled filtering banners by size rather than URL
576 * by adding patterns that replace all standard banner
577 * sizes with the "Junkbuster" gif to the re_filterfile
579 * - Enabled filtering WebBugs by providing a pattern
580 * which kills all 1x1 images
582 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
583 * which is selected by the (nonstandard and therefore
584 * capital) letter 'U' in the option string.
585 * It causes the quantifiers to be ungreedy by default.
586 * Appending a ? turns back to greedy (!).
588 * - Added a new interceptor ijb-send-banner, which
589 * sends back the "Junkbuster" gif. Without imagelist or
590 * MSIE detection support, or if tinygif = 1, or the
591 * URL isn't recognized as an imageurl, a lame HTML
592 * explanation is sent instead.
594 * - Added new feature, which permits blocking remote
595 * script redirects and firing back a local redirect
597 * The feature is conditionally compiled, i.e. it
598 * can be disabled with --disable-fast-redirects,
599 * plus it must be activated by a "fast-redirects"
600 * line in the config file, has its own log level
601 * and of course wants to be displayed by show-proxy-args
602 * Note: Boy, all the #ifdefs in 1001 locations and
603 * all the fumbling with configure.in and acconfig.h
604 * were *way* more work than the feature itself :-(
606 * - Because a generic redirect template was needed for
607 * this, tinygif = 3 now uses the same.
609 * - Moved GIFs, and other static HTTP response templates
614 * - Removed some >400 CRs again (Jon, you really worked
617 * Revision 1.3 2001/05/20 01:21:20 jongfoster
618 * Version 2.9.4 checkin.
619 * - Merged popupfile and cookiefile, and added control over PCRS
620 * filtering, in new "actionsfile".
621 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
622 * file error you now get a message box (in the Win32 GUI) rather
623 * than the program exiting with no explanation.
624 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
626 * - Removed tabs from "config"
627 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
628 * - Bumped up version number.
630 * Revision 1.2 2001/05/17 23:01:01 oes
631 * - Cleaned CRLF's from the sources and related files
633 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
634 * Initial import of version 2.9.3 source tree
637 *********************************************************************/
640 /* Declare struct FILE for vars and funcs. */
643 /* Need time_t for file_list */
645 /* Needed for pcre choice */
649 * Include appropriate regular expression libraries.
650 * Note that pcrs and pcre (native) are needed for cgi
651 * and are included anyway.
657 # ifdef PCRE_H_IN_SUBDIR
658 # include <pcre/pcre.h>
671 # include "pcreposix.h"
673 # ifdef PCRE_H_IN_SUBDIR
674 # include <pcre/pcreposix.h>
676 # include <pcreposix.h>
682 #endif /* def AMIGA */
686 * I don't want to have to #include all this just for the declaration
687 * of SOCKET. However, it looks like we have to...
702 typedef SOCKET jb_socket;
704 #define JB_INVALID_SOCKET INVALID_SOCKET
706 #else /* ndef _WIN32 */
709 * The type used by sockets. On UNIX it's an int. Microsoft decided to
710 * make it an unsigned.
712 typedef int jb_socket;
715 * The error value used for variables of type jb_socket. On UNIX this
716 * is -1, however Microsoft decided to make socket handles unsigned, so
717 * they use a different value.
720 #define JB_INVALID_SOCKET (-1)
722 #endif /* ndef _WIN32 */
726 * A standard error code. This should be JB_ERR_OK or one of the JB_ERR_xxx
731 #define JB_ERR_OK 0 /**< Success, no error */
732 #define JB_ERR_MEMORY 1 /**< Out of memory */
733 #define JB_ERR_CGI_PARAMS 2 /**< Missing or corrupt CGI parameters */
734 #define JB_ERR_FILE 3 /**< Error opening, reading or writing a file */
735 #define JB_ERR_PARSE 4 /**< Error parsing file */
736 #define JB_ERR_MODIFIED 5 /**< File has been modified outside of the
737 CGI actions editor. */
738 #define JB_ERR_COMPRESS 6 /**< Error on decompression */
741 * This macro is used to free a pointer that may be NULL.
742 * It also sets the variable to NULL after it's been freed.
743 * The paramater should be a simple variable without side effects.
745 #define freez(X) { if(X) { free((void*)X); X = NULL ; } }
749 * Fix a problem with Solaris. There should be no effect on other
752 * Solaris's isspace() is a macro which uses it's argument directly
753 * as an array index. Therefore we need to make sure that high-bit
754 * characters generate +ve values, and ideally we also want to make
755 * the argument match the declared parameter type of "int".
757 * Note: Remember to #include <ctype.h> if you use these macros.
759 #define ijb_toupper(__X) toupper((int)(unsigned char)(__X))
760 #define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
761 #define ijb_isspace(__X) isspace((int)(unsigned char)(__X))
764 * Use for statically allocated buffers if you have no other choice.
765 * Remember to check the length of what you write into the buffer
766 * - we don't want any buffer overflows!
768 #define BUFFER_SIZE 5000
771 * Max length of CGI parameters (arbitrary limit).
773 #define CGI_PARAM_LEN_MAX 500
776 * Buffer size for capturing struct hostent data in the
777 * gethostby(name|addr)_r library calls. Since we don't
778 * loop over gethostbyname_r, the buffer must be sufficient
779 * to accomodate multiple IN A RRs, as used in DNS round robin
780 * load balancing. W3C's wwwlib uses 1K, so that should be
781 * good enough for us, too.
784 * XXX: Temporary doubled, for some configurations
785 * 1K is still too small and we didn't get the
786 * real fix ready for inclusion.
788 #define HOSTENT_BUFFER_SIZE 2048
791 * Do not use. Originally this was so that you can
792 * say "while (FOREVER) { ...do something... }".
793 * However, this gives a warning with some compilers (e.g. VC++).
794 * Instead, use "for (;;) { ...do something... }".
799 * Default IP address to listen on, as a string.
800 * Set to "127.0.0.1".
802 #define HADDR_DEFAULT "127.0.0.1"
805 * Default port to listen on, as a number.
808 #define HADDR_PORT 8118
811 /* Forward def for struct client_state */
812 struct configuration_spec;
816 * Entry in a linked list of strings.
821 * The string pointer. It must point to a dynamically malloc()ed
822 * string or be NULL for the list functions to work. In the latter
823 * case, just be careful next time you iterate through the list in
828 /** Next entry in the linked list, or NULL if no more. */
829 struct list_entry *next;
833 * A header for a linked list of strings.
837 /** First entry in the list, or NULL if the list is empty. */
838 struct list_entry *first;
840 /** Last entry in the list, or NULL if the list is empty. */
841 struct list_entry *last;
846 * An entry in a map. This is a name=value pair.
850 /** The key for the map. */
852 /** The value associated with that key. */
854 /** The next map entry, or NULL if none. */
855 struct map_entry *next;
859 * A map from a string to another string.
860 * This is used for the paramaters passed in a HTTP GET request, and
861 * to store the exports when the CGI interface is filling in a template.
865 /** The first map entry, or NULL if the map is empty. */
866 struct map_entry *first;
867 /** The last map entry, or NULL if the map is empty. */
868 struct map_entry *last;
873 * A HTTP request. This includes the method (GET, POST) and
876 * This is also used whenever we want to match a URL against a
877 * URL pattern. This always contains the URL to match, and never
878 * a URL pattern. (See struct url_spec).
882 char *cmd; /**< Whole command line: method, URL, Version */
883 char *ocmd; /**< Backup of original cmd for CLF logging */
884 char *gpc; /**< HTTP method: GET, POST, ... */
885 char *url; /**< The URL */
886 char *ver; /**< Protocol version */
887 int status; /**< HTTP Status */
889 char *host; /**< Host part of URL */
890 int port; /**< Port of URL or 80 (default) */
891 char *path; /**< Path of URL */
892 char *hostport; /**< host[:port] */
893 int ssl; /**< Flag if protocol is https */
895 char *host_ip_addr_str; /**< String with dotted decimal representation
896 of host's IP. NULL before connect_to() */
898 char *dbuffer; /**< Buffer with '\0'-delimited domain name. */
899 char **dvec; /**< List of pointers to the strings in dbuffer. */
900 int dcount; /**< How many parts to this domain? (length of dvec) */
904 * Reasons for generating a http_response instead of delivering
905 * the requested resource. Mostly ordered the way they are checked
908 #define RSP_REASON_UNSUPPORTED 1
909 #define RSP_REASON_BLOCKED 2
910 #define RSP_REASON_UNTRUSTED 3
911 #define RSP_REASON_REDIRECTED 4
912 #define RSP_REASON_CGI_CALL 5
913 #define RSP_REASON_NO_SUCH_DOMAIN 6
914 #define RSP_REASON_FORWARDING_FAILED 7
915 #define RSP_REASON_CONNECT_FAILED 8
916 #define RSP_REASON_OUT_OF_MEMORY 9
917 #define RSP_REASON_INTERNAL_ERROR 10
920 * Response generated by CGI, blocker, or error handler
924 char *status; /**< HTTP status (string). */
925 struct list headers[1]; /**< List of header lines. */
926 char *head; /**< Formatted http response head. */
927 size_t head_length; /**< Length of http response head. */
928 char *body; /**< HTTP document body. */
929 size_t content_length; /**< Length of body, REQUIRED if binary body. */
930 int is_static; /**< Nonzero if the content will never change and
931 should be cached by the browser (e.g. images). */
932 int reason; /**< Why the response was generated in the first place. */
936 * A URL or a tag pattern.
940 /** The string which was parsed to produce this url_spec.
941 Used for debugging or display only. */
944 #ifdef FEATURE_EXTENDED_HOST_PATTERNS
945 regex_t *host_regex;/**< Regex for host matching */
947 char *dbuffer; /**< Buffer with '\0'-delimited domain name, or NULL to match all hosts. */
948 char **dvec; /**< List of pointers to the strings in dbuffer. */
949 int dcount; /**< How many parts to this domain? (length of dvec) */
950 int unanchored; /**< Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT. */
951 #endif /* defined FEATURE_EXTENDED_HOST_PATTERNS */
953 char *port_list; /**< List of acceptable ports, or NULL to match all ports */
955 regex_t *preg; /**< Regex for matching path part */
956 regex_t *tag_regex; /**< Regex for matching tags */
960 * If you declare a static url_spec, this is the value to initialize it to zero.
962 #ifndef FEATURE_EXTENDED_HOST_PATTERNS
963 #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL }
965 #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, NULL, NULL, NULL }
966 #endif /* def FEATURE_EXTENDED_HOST_PATTERNS */
969 * Constant for host part matching in URLs. If set, indicates that the start of
970 * the pattern must match the start of the URL. E.g. this is not set for the
971 * pattern ".example.com", so that it will match both "example.com" and
972 * "www.example.com". It is set for the pattern "example.com", which makes it
973 * match "example.com" only, not "www.example.com".
975 #define ANCHOR_LEFT 1
978 * Constant for host part matching in URLs. If set, indicates that the end of
979 * the pattern must match the end of the URL. E.g. this is not set for the
980 * pattern "ad.", so that it will match any host called "ad", irrespective
981 * of how many subdomains are in the fully-qualified domain name.
983 #define ANCHOR_RIGHT 2
987 * An I/O buffer. Holds a string which can be appended to, and can have data
988 * removed from the beginning.
992 char *buf; /**< Start of buffer */
993 char *cur; /**< Start of relevant data */
994 char *eod; /**< End of relevant data */
995 size_t size; /**< Size as malloc()ed */
1000 * Return the number of bytes in the I/O buffer associated with the passed
1001 * client_state pointer.
1004 #define IOB_PEEK(CSP) ((CSP->iob->cur > CSP->iob->eod) ? (CSP->iob->eod - CSP->iob->cur) : 0)
1008 * Remove any data in the I/O buffer associated with the passed
1009 * client_state pointer.
1011 #define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob));
1013 /* Bits for csp->content_type bitmask: */
1014 #define CT_TEXT 0x0001U /**< Suitable for pcrs filtering. */
1015 #define CT_GIF 0x0002U /**< Suitable for GIF filtering. */
1016 #define CT_TABOO 0x0004U /**< DO NOT filter, irrespective of other flags. */
1018 /* Although these are not, strictly speaking, content types
1019 * (they are content encodings), it is simple to handle them
1022 #define CT_GZIP 0x0010U /**< gzip-compressed data. */
1023 #define CT_DEFLATE 0x0020U /**< zlib-compressed data. */
1026 * Flag to signal that the server declared the content type,
1027 * so we can differentiate between unknown and undeclared
1030 #define CT_DECLARED 0x0040U
1033 * The mask which includes all actions.
1035 #define ACTION_MASK_ALL (~0UL)
1038 * The most compatible set of actions - i.e. none.
1040 #define ACTION_MOST_COMPATIBLE 0x00000000UL
1042 /** Action bitmap: Block the request. */
1043 #define ACTION_BLOCK 0x00000001UL
1044 /** Action bitmap: Deanimate if it's a GIF. */
1045 #define ACTION_DEANIMATE 0x00000002UL
1046 /** Action bitmap: Downgrade HTTP/1.1 to 1.0. */
1047 #define ACTION_DOWNGRADE 0x00000004UL
1048 /** Action bitmap: Fast redirects. */
1049 #define ACTION_FAST_REDIRECTS 0x00000008UL
1050 /** Action bitmap: Remove existing "Forwarded" header, and do not add another. */
1051 #define ACTION_HIDE_FORWARDED 0x00000010UL
1052 /** Action bitmap: Hide "From" header. */
1053 #define ACTION_HIDE_FROM 0x00000020UL
1054 /** Action bitmap: Hide "Referer" header. (sic - follow HTTP, not English). */
1055 #define ACTION_HIDE_REFERER 0x00000040UL
1056 /** Action bitmap: Hide "User-Agent" and similar headers. */
1057 #define ACTION_HIDE_USER_AGENT 0x00000080UL
1058 /** Action bitmap: This is an image. */
1059 #define ACTION_IMAGE 0x00000100UL
1060 /** Action bitmap: Sets the image blocker. */
1061 #define ACTION_IMAGE_BLOCKER 0x00000200UL
1062 /** Action bitmap: Prevent compression. */
1063 #define ACTION_NO_COMPRESSION 0x00000400UL
1064 /** Action bitmap: Change cookies to session only cookies. */
1065 #define ACTION_NO_COOKIE_KEEP 0x00000800UL
1066 /** Action bitmap: Block rending cookies. */
1067 #define ACTION_NO_COOKIE_READ 0x00001000UL
1068 /** Action bitmap: Block setting cookies. */
1069 #define ACTION_NO_COOKIE_SET 0x00002000UL
1070 /** Action bitmap: Override the forward settings in the config file */
1071 #define ACTION_FORWARD_OVERRIDE 0x00004000UL
1072 /** Action bitmap: Block as empty document */
1073 #define ACTION_HANDLE_AS_EMPTY_DOCUMENT 0x00008000UL
1074 /** Action bitmap: Limit CONNECT requests to safe ports. */
1075 #define ACTION_LIMIT_CONNECT 0x00010000UL
1076 /** Action bitmap: Redirect request. */
1077 #define ACTION_REDIRECT 0x00020000UL
1078 /** Action bitmap: Crunch or modify "if-modified-since" header. */
1079 #define ACTION_HIDE_IF_MODIFIED_SINCE 0x00040000UL
1080 /** Action bitmap: Overwrite Content-Type header. */
1081 #define ACTION_CONTENT_TYPE_OVERWRITE 0x00080000UL
1082 /** Action bitmap: Crunch specified server header. */
1083 #define ACTION_CRUNCH_SERVER_HEADER 0x00100000UL
1084 /** Action bitmap: Crunch specified client header */
1085 #define ACTION_CRUNCH_CLIENT_HEADER 0x00200000UL
1086 /** Action bitmap: Enable text mode by force */
1087 #define ACTION_FORCE_TEXT_MODE 0x00400000UL
1088 /** Action bitmap: Enable text mode by force */
1089 #define ACTION_CRUNCH_IF_NONE_MATCH 0x00800000UL
1090 /** Action bitmap: Enable content-dispostion crunching */
1091 #define ACTION_HIDE_CONTENT_DISPOSITION 0x01000000UL
1092 /** Action bitmap: Replace or block Last-Modified header */
1093 #define ACTION_OVERWRITE_LAST_MODIFIED 0x02000000UL
1094 /** Action bitmap: Replace or block Accept-Language header */
1095 #define ACTION_HIDE_ACCEPT_LANGUAGE 0x04000000UL
1098 /** Action string index: How to deanimate GIFs */
1099 #define ACTION_STRING_DEANIMATE 0
1100 /** Action string index: Replacement for "From:" header */
1101 #define ACTION_STRING_FROM 1
1102 /** Action string index: How to block images */
1103 #define ACTION_STRING_IMAGE_BLOCKER 2
1104 /** Action string index: Replacement for "Referer:" header */
1105 #define ACTION_STRING_REFERER 3
1106 /** Action string index: Replacement for "User-Agent:" header */
1107 #define ACTION_STRING_USER_AGENT 4
1108 /** Action string index: Legal CONNECT ports. */
1109 #define ACTION_STRING_LIMIT_CONNECT 5
1110 /** Action string index: Server headers containing this pattern are crunched*/
1111 #define ACTION_STRING_SERVER_HEADER 6
1112 /** Action string index: Client headers containing this pattern are crunched*/
1113 #define ACTION_STRING_CLIENT_HEADER 7
1114 /** Action string index: Replacement for the "Accept-Language:" header*/
1115 #define ACTION_STRING_LANGUAGE 8
1116 /** Action string index: Replacement for the "Content-Type:" header*/
1117 #define ACTION_STRING_CONTENT_TYPE 9
1118 /** Action string index: Replacement for the "content-dispostion:" header*/
1119 #define ACTION_STRING_CONTENT_DISPOSITION 10
1120 /** Action string index: Replacement for the "If-Modified-Since:" header*/
1121 #define ACTION_STRING_IF_MODIFIED_SINCE 11
1122 /** Action string index: Replacement for the "Last-Modified:" header. */
1123 #define ACTION_STRING_LAST_MODIFIED 12
1124 /** Action string index: Redirect URL */
1125 #define ACTION_STRING_REDIRECT 13
1126 /** Action string index: Decode before redirect? */
1127 #define ACTION_STRING_FAST_REDIRECTS 14
1128 /** Action string index: Overriding forward rule. */
1129 #define ACTION_STRING_FORWARD_OVERRIDE 15
1130 /** Action string index: Reason for the block. */
1131 #define ACTION_STRING_BLOCK 16
1132 /** Number of string actions. */
1133 #define ACTION_STRING_COUNT 17
1136 /* To make the ugly hack in sed easier to understand */
1137 #define CHECK_EVERY_HEADER_REMAINING 0
1140 /** Index into current_action_spec::multi[] for headers to add. */
1141 #define ACTION_MULTI_ADD_HEADER 0
1142 /** Index into current_action_spec::multi[] for content filters to apply. */
1143 #define ACTION_MULTI_FILTER 1
1144 /** Index into current_action_spec::multi[] for server-header filters to apply. */
1145 #define ACTION_MULTI_SERVER_HEADER_FILTER 2
1146 /** Index into current_action_spec::multi[] for client-header filters to apply. */
1147 #define ACTION_MULTI_CLIENT_HEADER_FILTER 3
1148 /** Index into current_action_spec::multi[] for client-header tags to apply. */
1149 #define ACTION_MULTI_CLIENT_HEADER_TAGGER 4
1150 /** Index into current_action_spec::multi[] for server-header tags to apply. */
1151 #define ACTION_MULTI_SERVER_HEADER_TAGGER 5
1152 /** Number of multi-string actions. */
1153 #define ACTION_MULTI_COUNT 6
1157 * This structure contains a list of actions to apply to a URL.
1158 * It only contains positive instructions - no "-" options.
1159 * It is not used to store the actions list itself, only for
1160 * url_actions() to return the current values.
1162 struct current_action_spec
1164 /** Actions to apply. A bit set to "1" means perform the action. */
1165 unsigned long flags;
1168 * Paramaters for those actions that require them.
1169 * Each entry is valid if & only if the corresponding entry in "flags" is
1172 char * string[ACTION_STRING_COUNT];
1174 /** Lists of strings for multi-string actions. */
1175 struct list multi[ACTION_MULTI_COUNT][1];
1180 * This structure contains a set of changes to actions.
1181 * It can contain both positive and negative instructions.
1182 * It is used to store an entry in the actions list.
1186 unsigned long mask; /**< Actions to keep. A bit set to "0" means remove action. */
1187 unsigned long add; /**< Actions to add. A bit set to "1" means add action. */
1190 * Paramaters for those actions that require them.
1191 * Each entry is valid if & only if the corresponding entry in "flags" is
1194 char * string[ACTION_STRING_COUNT];
1196 /** Lists of strings to remove, for multi-string actions. */
1197 struct list multi_remove[ACTION_MULTI_COUNT][1];
1199 /** If nonzero, remove *all* strings from the multi-string action. */
1200 int multi_remove_all[ACTION_MULTI_COUNT];
1202 /** Lists of strings to add, for multi-string actions. */
1203 struct list multi_add[ACTION_MULTI_COUNT][1];
1208 * This structure is used to store action files.
1210 * It contains an URL or tag pattern, and the changes to
1211 * the actions. It's a linked list and should only be
1212 * free'd through unload_actions_file() unless there's
1213 * only a single entry.
1217 struct url_spec url[1]; /**< The URL or tag pattern. */
1219 struct action_spec *action; /**< Action settings that might be shared with
1220 the list entry before or after the current
1221 one and can't be free'd willy nilly. */
1223 struct url_actions *next; /**< Next action section in file, or NULL. */
1228 * Flags for use in csp->flags
1232 * Flag for csp->flags: Set if this client is processing data.
1233 * Cleared when the thread associated with this structure dies.
1235 #define CSP_FLAG_ACTIVE 0x01
1238 * Flag for csp->flags: Set if the server's reply is in "chunked"
1241 #define CSP_FLAG_CHUNKED 0x02
1244 * Flag for csp->flags: Set if this request was enforced, although it would
1245 * normally have been blocked.
1247 #define CSP_FLAG_FORCED 0x04
1250 * Flag for csp->flags: Set if any modification to the body was done.
1252 #define CSP_FLAG_MODIFIED 0x08
1255 * Flag for csp->flags: Set if request was blocked.
1257 #define CSP_FLAG_REJECTED 0x10
1260 * Flag for csp->flags: Set if we are toggled on (FEATURE_TOGGLE).
1262 #define CSP_FLAG_TOGGLED_ON 0x20
1265 * Flag for csp->flags: Set if adding the 'Connection: close' header
1266 * for the client isn't necessary.
1268 #define CSP_FLAG_CLIENT_CONNECTION_CLOSE_SET 0x00000040UL
1271 * Flag for csp->flags: Set if adding the 'Connection: close' header
1272 * for the server isn't necessary.
1274 #define CSP_FLAG_SERVER_CONNECTION_CLOSE_SET 0x00000080UL
1277 * Flag for csp->flags: Signals header parsers whether they
1278 * are parsing server or client headers.
1280 #define CSP_FLAG_CLIENT_HEADER_PARSING_DONE 0x00000100UL
1283 * Flag for csp->flags: Set if adding the Host: header
1286 #define CSP_FLAG_HOST_HEADER_IS_SET 0x00000200UL
1289 * Flag for csp->flags: Set if filtering is disabled by X-Filter: No
1290 * XXX: As we now have tags we might as well ditch this.
1292 #define CSP_FLAG_NO_FILTERING 0x00000400UL
1296 * Flags for use in return codes of child processes
1300 * Flag for process return code: Set if exiting porcess has been toggled
1301 * during its lifetime.
1303 #define RC_FLAG_TOGGLED 0x10
1306 * Flag for process return code: Set if exiting porcess has blocked its
1309 #define RC_FLAG_BLOCKED 0x20
1312 * Maximum number of actions/filter files. This limit is arbitrary - it's just used
1315 #define MAX_AF_FILES 10
1318 * The state of a Privoxy processing thread.
1322 /** The proxy's configuration */
1323 struct configuration_spec * config;
1325 /** The actions to perform on the current request */
1326 struct current_action_spec action[1];
1328 /** socket to talk to client (web browser) */
1331 /** socket to talk to server (web server or proxy) */
1334 /** Multi-purpose flag container, see CSP_FLAG_* above */
1337 /** Client PC's IP address, as reported by the accept() function.
1340 /** Client PC's IP address, as reported by the accept() function.
1344 /** The URL that was requested */
1345 struct http_request http[1];
1348 * The final forwarding settings.
1349 * XXX: Currently this is only used for forward-override,
1350 * so we can free the space in sweep.
1352 struct forward_spec * fwd;
1354 /** An I/O buffer used for buffering data read from the network */
1357 /** List of all headers for this request */
1358 struct list headers[1];
1360 /** List of all tags that apply to this request */
1361 struct list tags[1];
1363 /** MIME-Type key, see CT_* above */
1364 unsigned int content_type;
1366 /** Actions files associated with this client */
1367 struct file_list *actions_list[MAX_AF_FILES];
1369 /** pcrs job files. */
1370 struct file_list *rlist[MAX_AF_FILES];
1372 /** Length after content modification. */
1373 size_t content_length;
1375 #ifdef FEATURE_TRUST
1378 struct file_list *tlist;
1380 #endif /* def FEATURE_TRUST */
1383 * Failure reason to embedded in the CGI error page,
1384 * or NULL. Currently only used for socks errors.
1386 char *error_message;
1388 /** Next thread in linked list. Only read or modify from the main thread! */
1389 struct client_state *next;
1394 * A function to add a header
1396 typedef jb_err (*add_header_func_ptr)(struct client_state *);
1399 * A function to process a header
1401 typedef jb_err (*parser_func_ptr )(struct client_state *, char **);
1405 * List of functions to run on a list of headers
1409 /** The header prefix to match */
1412 /** The length of the prefix to match */
1415 /** The function to apply to this line */
1416 parser_func_ptr parser;
1421 * List of available CGI functions.
1423 struct cgi_dispatcher
1425 /** The URL of the CGI, relative to the CGI root. */
1426 const char * const name;
1428 /** The handler function for the CGI */
1429 jb_err (* const handler)(struct client_state *csp, struct http_response *rsp, const struct map *parameters);
1431 /** The description of the CGI, to appear on the main menu, or NULL to hide it. */
1432 const char * const description;
1434 /** A flag that indicates whether unintentional calls to this CGI can cause damage */
1440 * A data file used by Privoxy. Kept in a linked list.
1445 * This is a pointer to the data structures associated with the file.
1446 * Read-only once the structure has been created.
1451 * The unloader function.
1452 * Normally NULL. When we are finished with file (i.e. when we have
1453 * loaded a new one), set to a pointer to an unloader function.
1454 * Unloader will be called by sweep() (called from main loop) when
1455 * all clients using this file are done. This prevents threading
1458 void (*unloader)(void *);
1461 * Used internally by sweep(). Do not access from elsewhere.
1466 * File last-modified time, so we can check if file has been changed.
1467 * Read-only once the structure has been created.
1469 time_t lastmodified;
1472 * The full filename.
1477 * Pointer to next entry in the linked list of all "file_list"s.
1478 * This linked list is so that sweep() can navigate it.
1479 * Since sweep() can remove items from the list, we must be careful
1480 * to only access this value from main thread (when we know sweep
1481 * won't be running).
1483 struct file_list *next;
1487 #ifdef FEATURE_TRUST
1490 * The format of a trust file when loaded into memory.
1494 struct url_spec url[1]; /**< The URL pattern */
1495 int reject; /**< FIXME: Please document this! */
1496 struct block_spec *next; /**< Next entry in linked list */
1500 * Arbitrary limit for the number of trusted referrers.
1502 #define MAX_TRUSTED_REFERRERS 512
1504 #endif /* def FEATURE_TRUST */
1507 #define SOCKS_NONE 0 /**< Don't use a SOCKS server */
1508 #define SOCKS_4 40 /**< original SOCKS 4 protocol */
1509 #define SOCKS_4A 41 /**< as modified for hosts w/o external DNS */
1510 #define SOCKS_5 50 /**< as modified for hosts w/o external DNS */
1514 * How to forward a connection to a parent proxy.
1518 /** URL pattern that this forward_spec is for. */
1519 struct url_spec url[1];
1521 /** Connection type. Must be SOCKS_NONE, SOCKS_4, SOCKS_4A or SOCKS_5. */
1524 /** SOCKS server hostname. Only valid if "type" is SOCKS_4 or SOCKS_4A. */
1527 /** SOCKS server port. */
1530 /** Parent HTTP proxy hostname, or NULL for none. */
1533 /** Parent HTTP proxy port. */
1536 /** Next entry in the linked list. */
1537 struct forward_spec *next;
1542 * Initializer for a static struct forward_spec.
1544 #define FORWARD_SPEC_INITIALIZER { { URL_SPEC_INITIALIZER }, 0, NULL, 0, NULL, 0, NULL }
1546 /* Supported filter types */
1547 #define FT_CONTENT_FILTER 0
1548 #define FT_CLIENT_HEADER_FILTER 1
1549 #define FT_SERVER_HEADER_FILTER 2
1550 #define FT_CLIENT_HEADER_TAGGER 3
1551 #define FT_SERVER_HEADER_TAGGER 4
1553 #define MAX_FILTER_TYPES 5
1556 * This struct represents one filter (one block) from
1557 * the re_filterfile. If there is more than one filter
1558 * in the file, the file will be represented by a
1559 * chained list of re_filterfile specs.
1561 struct re_filterfile_spec
1563 char *name; /**< Name from FILTER: statement in re_filterfile. */
1564 char *description; /**< Description from FILTER: statement in re_filterfile. */
1565 struct list patterns[1]; /**< The patterns from the re_filterfile. */
1566 pcrs_job *joblist; /**< The resulting compiled pcrs_jobs. */
1567 int type; /**< Filter type (content, client-header, server-header). */
1568 int dynamic; /**< Set to one if the pattern might contain variables
1569 and has to be recompiled for every request. */
1570 struct re_filterfile_spec *next; /**< The pointer for chaining. */
1576 #define ACL_PERMIT 1 /**< Accept connection request */
1577 #define ACL_DENY 2 /**< Reject connection request */
1580 * An IP address pattern. Used to specify networks in the ACL.
1582 struct access_control_addr
1584 unsigned long addr; /**< The IP address as an integer. */
1585 unsigned long mask; /**< The network mask as an integer. */
1586 unsigned long port; /**< The port number. */
1590 * An access control list (ACL) entry.
1592 * This is a linked list.
1594 struct access_control_list
1596 struct access_control_addr src[1]; /**< Client IP address */
1597 struct access_control_addr dst[1]; /**< Website or parent proxy IP address */
1599 short action; /**< ACL_PERMIT or ACL_DENY */
1600 struct access_control_list *next; /**< The next entry in the ACL. */
1603 #endif /* def FEATURE_ACL */
1606 /** Maximum number of loaders (actions, re_filter, ...) */
1610 /** configuration_spec::feature_flags: CGI actions editor. */
1611 #define RUNTIME_FEATURE_CGI_EDIT_ACTIONS 1
1613 /** configuration_spec::feature_flags: Web-based toggle. */
1614 #define RUNTIME_FEATURE_CGI_TOGGLE 2
1616 /** configuration_spec::feature_flags: HTTP-header-based toggle. */
1617 #define RUNTIME_FEATURE_HTTP_TOGGLE 4
1619 /** configuration_spec::feature_flags: Split large forms to limit the number of GET arguments. */
1620 #define RUNTIME_FEATURE_SPLIT_LARGE_FORMS 8
1622 /** configuration_spec::feature_flags: Check the host header for requests with host-less request lines. */
1623 #define RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS 16
1625 /** configuration_spec::feature_flags: Don't allow to circumvent blocks with the force prefix. */
1626 #define RUNTIME_FEATURE_ENFORCE_BLOCKS 32
1628 /** configuration_spec::feature_flags: Allow to block or redirect CGI requests. */
1629 #define RUNTIME_FEATURE_CGI_CRUNCHING 64
1633 * Data loaded from the configuration file.
1635 * (Anomaly: toggle is still handled through a global, not this structure)
1637 struct configuration_spec
1642 /** Nonzero to enable multithreading. */
1646 * Bitmask of features that can be enabled/disabled through the config
1647 * file. Currently defined bits:
1649 * - RUNTIME_FEATURE_CGI_EDIT_ACTIONS
1650 * - RUNTIME_FEATURE_CGI_TOGGLE
1651 * - RUNTIME_FEATURE_HTTP_TOGGLE
1652 * - RUNTIME_FEATURE_SPLIT_LARGE_FORMS
1654 unsigned feature_flags;
1656 /** The log file name. */
1657 const char *logfile;
1659 /** The config file directory. */
1660 const char *confdir;
1662 /** The directory for customized CGI templates. */
1663 const char *templdir;
1665 /** The log file directory. */
1668 /** The full paths to the actions files. */
1669 const char *actions_file[MAX_AF_FILES];
1671 /** The short names of the actions files. */
1672 const char *actions_file_short[MAX_AF_FILES];
1674 /** The administrator's email address */
1675 char *admin_address;
1677 /** A URL with info on this proxy */
1678 char *proxy_info_url;
1680 /** URL to the user manual (on our website or local copy) */
1683 /** The file names of the pcre filter files. */
1684 const char *re_filterfile[MAX_AF_FILES];
1686 /** The short names of the pcre filter files. */
1687 const char *re_filterfile_short[MAX_AF_FILES];
1689 /** The hostname to show on CGI pages, or NULL to use the real one. */
1690 const char *hostname;
1692 #ifdef FEATURE_COOKIE_JAR
1694 /** The file name of the cookie jar file */
1695 const char * jarfile;
1697 /** The handle to the cookie jar file */
1700 #endif /* def FEATURE_COOKIE_JAR */
1702 /** IP address to bind to. Defaults to HADDR_DEFAULT == 127.0.0.1. */
1705 /** Port to bind to. Defaults to HADDR_PORT == 8118. */
1708 /** Size limit for IOB */
1709 size_t buffer_limit;
1711 #ifdef FEATURE_TRUST
1713 /** The file name of the trust file. */
1714 const char * trustfile;
1716 /** FIXME: DOCME: Document this. */
1717 struct list trust_info[1];
1719 /** FIXME: DOCME: Document this. */
1720 struct url_spec *trust_list[MAX_TRUSTED_REFERRERS];
1722 #endif /* def FEATURE_TRUST */
1726 /** The access control list (ACL). */
1727 struct access_control_list *acl;
1729 #endif /* def FEATURE_ACL */
1731 /** Information about parent proxies (forwarding). */
1732 struct forward_spec *forward;
1734 /** Number of retries in case a forwarded connection attempt fails */
1735 int forwarded_connect_retries;
1737 /** All options from the config file, HTML-formatted. */
1740 /** The configuration file object. */
1741 struct file_list *config_file_list;
1743 /** List of loaders */
1744 int (*loaders[NLOADERS])(struct client_state *);
1746 /** Nonzero if we need to bind() to the new port. */
1750 /** Calculates the number of elements in an array, using sizeof. */
1751 #define SZ(X) (sizeof(X) / sizeof(*X))
1753 #ifdef FEATURE_FORCE_LOAD
1754 /** The force load URL prefix. */
1755 #define FORCE_PREFIX "/PRIVOXY-FORCE"
1756 #endif /* def FEATURE_FORCE_LOAD */
1758 #ifdef FEATURE_NO_GIFS
1759 /** The MIME type for images ("image/png" or "image/gif"). */
1760 #define BUILTIN_IMAGE_MIMETYPE "image/png"
1762 #define BUILTIN_IMAGE_MIMETYPE "image/gif"
1763 #endif /* def FEATURE_NO_GIFS */
1770 /** URL for the Privoxy home page. */
1771 #define HOME_PAGE_URL "http://www.privoxy.org/"
1773 /** URL for the Privoxy user manual. */
1774 #define USER_MANUAL_URL HOME_PAGE_URL VERSION "/user-manual/"
1776 /** Prefix for actions help links (append to USER_MANUAL_URL). */
1777 #define ACTIONS_HELP_PREFIX "actions-file.html#"
1779 /** Prefix for config option help links (append to USER_MANUAL_URL). */
1780 #define CONFIG_HELP_PREFIX "config.html#"
1783 * The "hosts" to intercept and display CGI pages.
1784 * First one is a hostname only, second one can specify host and path.
1787 * 1) Do not specify the http: prefix
1788 * 2) CGI_SITE_2_PATH must not end with /, one will be added automatically.
1789 * 3) CGI_SITE_2_PATH must start with /, unless it is the empty string.
1791 #define CGI_SITE_1_HOST "p.p"
1792 #define CGI_SITE_2_HOST "config.privoxy.org"
1793 #define CGI_SITE_2_PATH ""
1796 * The prefix for CGI pages. Written out in generated HTML.
1797 * INCLUDES the trailing slash.
1799 #define CGI_PREFIX "http://" CGI_SITE_2_HOST CGI_SITE_2_PATH "/"
1805 #endif /* ndef PROJECT_H_INCLUDED */