1 #ifndef PROJECT_H_INCLUDED
2 #define PROJECT_H_INCLUDED
4 #define PROJECT_H_VERSION "$Id: project.h,v 2.2 2002/07/12 04:26:17 agotneja Exp $"
5 /*********************************************************************
7 * File : $Source: /cvsroot/ijbswa//current/src/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 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 2.2 2002/07/12 04:26:17 agotneja
41 * Re-factored 'chat()' to become understandable and maintainable as
42 * a first step in adding Transparent Proxy functionality.
44 * Added several new static functions in jcc.c, and moved some data
45 * parameters up into project.h to allow them to be passed between
48 * Revision 2.1 2002/06/04 16:35:56 jongfoster
49 * Moving three variable declarations to jcc.c from project.h
51 * Revision 2.0 2002/06/04 14:34:21 jongfoster
52 * Moving source files to src/
54 * Revision 1.72 2002/05/14 21:35:49 oes
55 * Split HELP_LINK_PREFIX into ACTIONS_HELP_PREFIX and CONFIG_HELP_PREFIX
56 * because of split in user-manual
58 * Revision 1.71 2002/05/12 21:39:36 jongfoster
59 * - Adding Doxygen-style comments to structures and #defines.
61 * Revision 1.70 2002/05/12 16:05:50 jongfoster
62 * Fixing ACTION_MASK_ALL to be unsigned long rather than
63 * just unsigned int. I don't know if anyone is porting
64 * Privoxy to 16-bit platforms, but if so, +limit-connect
65 * wouldn't have worked because of this bug.
67 * Revision 1.69 2002/05/08 16:00:16 oes
68 * Added size member to struct iob, so it can
69 * be alloced larger than needed.
71 * Revision 1.68 2002/04/26 12:56:00 oes
72 * Killed REDIRECT_URL, added USER_MANUAL_URL and HELP_LINK_PREFIX
74 * Revision 1.67 2002/04/24 02:12:43 oes
75 * - Jon's multiple AF patch:
76 * - Make csp->actions_list an array
77 * - #define MAX_ACTION_FILES
78 * - Moved CGI_PARAM_LEN_MAX (500) here
80 * Revision 1.66 2002/04/15 19:06:43 jongfoster
83 * Revision 1.65 2002/04/04 00:36:36 gliptak
84 * always use pcre for matching
86 * Revision 1.64 2002/04/03 22:28:03 gliptak
87 * Removed references to gnu_regex
89 * Revision 1.63 2002/03/31 17:19:00 jongfoster
90 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
92 * Revision 1.62 2002/03/26 22:48:49 swa
95 * Revision 1.61 2002/03/26 22:29:55 swa
96 * we have a new homepage!
98 * Revision 1.60 2002/03/24 15:52:17 jongfoster
99 * Changing CGI URL prefixes for new name
101 * Revision 1.59 2002/03/24 15:23:33 jongfoster
104 * Revision 1.58 2002/03/24 13:25:43 swa
105 * name change related issues
107 * Revision 1.57 2002/03/16 20:28:34 oes
108 * Added descriptions to the filters so users will know what they select in the cgi editor
110 * Revision 1.56 2002/03/13 20:27:30 oes
111 * Fixing bug with CT_TABOO
113 * Revision 1.55 2002/03/12 01:42:50 oes
114 * Introduced modular filters
116 * Revision 1.54 2002/03/09 20:03:52 jongfoster
117 * - Making various functions return int rather than size_t.
118 * (Undoing a recent change). Since size_t is unsigned on
119 * Windows, functions like read_socket that return -1 on
120 * error cannot return a size_t.
122 * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
123 * crashes, and also frequently caused JB to jump to 100%
124 * CPU and stay there. (Because it thought it had just
125 * read ((unsigned)-1) == 4Gb of data...)
127 * - The signature of write_socket has changed, it now simply
128 * returns success=0/failure=nonzero.
130 * - Trying to get rid of a few warnings --with-debug on
131 * Windows, I've introduced a new type "jb_socket". This is
132 * used for the socket file descriptors. On Windows, this
133 * is SOCKET (a typedef for unsigned). Everywhere else, it's
134 * an int. The error value can't be -1 any more, so it's
135 * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
136 * Windows it maps to the #define INVALID_SOCKET.)
138 * - The signature of bind_port has changed.
140 * Revision 1.53 2002/03/08 16:48:55 oes
141 * Added FEATURE_NO_GIFS and BUILTIN_IMAGE_MIMETYPE
143 * Revision 1.52 2002/03/07 03:46:17 oes
144 * Fixed compiler warnings
146 * Revision 1.51 2002/03/05 04:52:42 oes
147 * Deleted non-errlog debugging code
149 * Revision 1.50 2002/03/04 19:32:07 oes
150 * Changed default port to 8118
152 * Revision 1.49 2002/03/04 18:28:55 oes
153 * Deleted PID_FILE_NAME
155 * Revision 1.48 2002/03/03 14:50:40 oes
156 * Fixed CLF logging: Added ocmd member for client's request to struct http_request
158 * Revision 1.47 2002/02/20 23:15:13 jongfoster
159 * Parsing functions now handle out-of-memory gracefully by returning
162 * Revision 1.46 2002/01/17 21:06:09 jongfoster
163 * Now #defining the URLs of the config interface
165 * Minor changes to struct http_request and struct url_spec due to
166 * standardizing that struct http_request is used to represent a URL, and
167 * struct url_spec is used to represent a URL pattern. (Before, URLs were
168 * represented as seperate variables and a partially-filled-in url_spec).
170 * Revision 1.45 2002/01/09 14:33:27 oes
171 * Added HOSTENT_BUFFER_SIZE
173 * Revision 1.44 2001/12/30 14:07:32 steudten
174 * - Add signal handling (unix)
175 * - Add SIGHUP handler (unix)
176 * - Add creation of pidfile (unix)
177 * - Add action 'top' in rc file (RH)
178 * - Add entry 'SIGNALS' to manpage
179 * - Add exit message to logfile (unix)
181 * Revision 1.43 2001/11/22 21:57:51 jongfoster
182 * Making action_spec->flags into an unsigned long rather than just an
184 * Adding ACTION_NO_COOKIE_KEEP
186 * Revision 1.42 2001/11/05 21:42:41 steudten
187 * Include DBG() macro.
189 * Revision 1.41 2001/10/28 19:12:06 jongfoster
190 * Adding ijb_toupper()
192 * Revision 1.40 2001/10/26 17:40:47 oes
193 * Moved ijb_isspace and ijb_tolower to project.h
194 * Removed http->user_agent, csp->referrer and csp->accept_types
196 * Revision 1.39 2001/10/25 03:45:02 david__schmidt
197 * Adding a (void*) cast to freez() because Visual Age C++ won't expand the
198 * macro when called with a cast; so moving the cast to the macro def'n
199 * seems to both eliminate compiler warnings (on darwin and OS/2, anyway) and
200 * doesn't make macro expansion complain. Hope this works for everyone else
203 * Revision 1.38 2001/10/23 21:19:04 jongfoster
204 * New error-handling support: jb_err type and JB_ERR_xxx constants
205 * CGI functions now return a jb_err, and their parameters map is const.
206 * Support for RUNTIME_FEATUREs to enable/disable config editor
207 * Adding a few comments
209 * Revision 1.37 2001/10/14 22:14:01 jongfoster
210 * Removing name_length field from struct cgi_dispatcher, as this is
211 * now calculated at runtime from the "name" field.
213 * Revision 1.36 2001/10/10 16:45:15 oes
214 * Added LIMIT_CONNECT action and string
215 * Fixed HTTP message line termination
216 * Added CFORBIDDEN HTTP message
218 * Revision 1.35 2001/10/07 18:06:43 oes
219 * Added status member to struct http_request
221 * Revision 1.34 2001/10/07 15:45:25 oes
222 * Added url member to struct http_request and commented all
227 * Added ACTION_DOWNGRADE and ACTION_NO_COMPRESSION
229 * Replaced struct client_state members rejected,
230 * force, active and toggled_on with "flags" bitmap.
232 * Added CSP_FLAG_MODIFIED and CSP_FLAG_CHUNKED
234 * Added buffer_limit to struct configuration_spec
236 * Revision 1.33 2001/09/20 13:30:08 steudten
238 * Make freez() more secure in case of: if (exp) { free(z) ; a=*z }
239 * Last case will set z to NULL in free(z) and thats bad..
241 * Revision 1.32 2001/09/16 23:02:51 jongfoster
244 * Revision 1.31 2001/09/16 13:20:29 jongfoster
245 * Rewrite of list library. Now has seperate header and list_entry
246 * structures. Also added a large sprinking of assert()s to the list
249 * Revision 1.30 2001/09/13 23:52:00 jongfoster
250 * Support for both static and dynamically generated CGI pages
252 * Revision 1.29 2001/09/13 23:29:43 jongfoster
253 * Defining FORWARD_SPEC_INITIALIZER
255 * Revision 1.28 2001/09/13 23:05:50 jongfoster
256 * Changing the string paramater to the header parsers a "const".
258 * Revision 1.27 2001/08/05 16:06:20 jongfoster
259 * Modifiying "struct map" so that there are now separate header and
260 * "map_entry" structures. This means that functions which modify a
261 * map no longer need to return a pointer to the modified map.
262 * Also, it no longer reverses the order of the entries (which may be
263 * important with some advanced template substitutions).
265 * Revision 1.26 2001/07/30 22:08:36 jongfoster
266 * Tidying up #defines:
267 * - All feature #defines are now of the form FEATURE_xxx
268 * - Permanently turned off WIN_GUI_EDIT
269 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
271 * Revision 1.25 2001/07/29 18:43:08 jongfoster
272 * Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
275 * Revision 1.24 2001/07/25 17:20:27 oes
276 * Introduced http->user_agent
278 * Revision 1.23 2001/07/18 12:32:23 oes
279 * - Added ACTION_STRING_DEANIMATE
280 * - moved #define freez from jcc.h to project.h
282 * Revision 1.22 2001/07/15 17:51:41 jongfoster
283 * Renaming #define STATIC to STATIC_PCRE
285 * Revision 1.21 2001/07/13 14:03:19 oes
286 * - Reorganized regex header inclusion and #defines to
287 * comply to the scheme in configure.in
288 * - Added csp->content_type and its CT_* keys
289 * - Added ACTION_DEANIMATE
290 * - Removed all #ifdef PCRS
292 * Revision 1.20 2001/06/29 21:45:41 oes
293 * Indentation, CRLF->LF, Tab-> Space
295 * Revision 1.19 2001/06/29 13:33:36 oes
296 * - Improved comments
297 * - Introduced http_request.host_ip_addr_str
298 * - Introduced http_response.head_length
299 * - Introduced config.my_ip_addr_str, config.my_hostname,
300 * config.admin_address and config.proxy_info_url
301 * - Removed config.proxy_args_header and config.proxy_args_trailer,
302 * renamed config.proxy_args_invocation to config.proxy_args
303 * - Removed HTML snipplets and GIFs
304 * - Removed logentry from cancelled commit
306 * Revision 1.18 2001/06/09 10:57:39 jongfoster
307 * Adding definition of BUFFER_SIZE.
308 * Changing struct cgi_dispatcher to use "const" strings.
310 * Revision 1.17 2001/06/07 23:15:09 jongfoster
311 * Merging ACL and forward files into config file.
312 * Moving struct gateway members into struct forward_spec
313 * Removing config->proxy_args_gateways
314 * Cosmetic: Adding a few comments
316 * Revision 1.16 2001/06/04 18:31:58 swa
317 * files are now prefixed with either `confdir' or `logdir'.
318 * `make redhat-dist' replaces both entries confdir and logdir
321 * Revision 1.15 2001/06/04 11:28:53 swa
322 * redirect did not work due to missing /
324 * Revision 1.14 2001/06/03 11:03:48 oes
326 * added struct http_response,
327 * changed struct interceptors to struct cgi_dispatcher,
328 * moved HTML stuff to cgi.h
330 * Revision 1.13 2001/06/01 20:05:36 jongfoster
331 * Support for +image-blocker{}: added ACTION_IMAGE_BLOCKER
332 * constant, and removed csp->tinygif.
334 * Revision 1.12 2001/06/01 18:49:17 jongfoster
335 * Replaced "list_share" with "list" - the tiny memory gain was not
336 * worth the extra complexity.
338 * Revision 1.11 2001/06/01 10:32:47 oes
339 * Added constants for anchoring selection bitmap
341 * Revision 1.10 2001/05/31 21:33:53 jongfoster
342 * Changes for new actions file, replacing permissionsfile
343 * and parts of the config file. Also added support for
346 * Revision 1.9 2001/05/31 17:32:31 oes
348 * - Enhanced domain part globbing with infix and prefix asterisk
349 * matching and optional unanchored operation
351 * Revision 1.8 2001/05/29 20:09:15 joergs
352 * HTTP_REDIRECT_TEMPLATE fixed.
354 * Revision 1.7 2001/05/29 09:50:24 jongfoster
355 * Unified blocklist/imagelist/actionslist.
356 * File format is still under discussion, but the internal changes
359 * Also modified interceptor behaviour:
360 * - We now intercept all URLs beginning with one of the following
361 * prefixes (and *only* these prefixes):
363 * * http://ijbswa.sf.net/config/
364 * * http://ijbswa.sourceforge.net/config/
365 * - New interceptors "home page" - go to http://i.j.b/ to see it.
366 * - Internal changes so that intercepted and fast redirect pages
367 * are not replaced with an image.
368 * - Interceptors now have the option to send a binary page direct
369 * to the client. (i.e. ijb-send-banner uses this)
370 * - Implemented show-url-info interceptor. (Which is why I needed
371 * the above interceptors changes - a typical URL is
372 * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
373 * The previous mechanism would not have intercepted that, and
374 * if it had been intercepted then it then it would have replaced
377 * Revision 1.6 2001/05/27 22:17:04 oes
379 * - re_process_buffer no longer writes the modified buffer
380 * to the client, which was very ugly. It now returns the
381 * buffer, which it is then written by chat.
383 * - content_length now adjusts the Content-Length: header
384 * for modified documents rather than crunch()ing it.
385 * (Length info in csp->content_length, which is 0 for
386 * unmodified documents)
388 * - For this to work, sed() is called twice when filtering.
390 * Revision 1.5 2001/05/26 00:28:36 jongfoster
391 * Automatic reloading of config file.
392 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
393 * Most of the global variables have been moved to a new
394 * struct configuration_spec, accessed through csp->config->globalname
395 * Most of the globals remaining are used by the Win32 GUI.
397 * Revision 1.4 2001/05/22 18:46:04 oes
399 * - Enabled filtering banners by size rather than URL
400 * by adding patterns that replace all standard banner
401 * sizes with the "Junkbuster" gif to the re_filterfile
403 * - Enabled filtering WebBugs by providing a pattern
404 * which kills all 1x1 images
406 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
407 * which is selected by the (nonstandard and therefore
408 * capital) letter 'U' in the option string.
409 * It causes the quantifiers to be ungreedy by default.
410 * Appending a ? turns back to greedy (!).
412 * - Added a new interceptor ijb-send-banner, which
413 * sends back the "Junkbuster" gif. Without imagelist or
414 * MSIE detection support, or if tinygif = 1, or the
415 * URL isn't recognized as an imageurl, a lame HTML
416 * explanation is sent instead.
418 * - Added new feature, which permits blocking remote
419 * script redirects and firing back a local redirect
421 * The feature is conditionally compiled, i.e. it
422 * can be disabled with --disable-fast-redirects,
423 * plus it must be activated by a "fast-redirects"
424 * line in the config file, has its own log level
425 * and of course wants to be displayed by show-proxy-args
426 * Note: Boy, all the #ifdefs in 1001 locations and
427 * all the fumbling with configure.in and acconfig.h
428 * were *way* more work than the feature itself :-(
430 * - Because a generic redirect template was needed for
431 * this, tinygif = 3 now uses the same.
433 * - Moved GIFs, and other static HTTP response templates
438 * - Removed some >400 CRs again (Jon, you really worked
441 * Revision 1.3 2001/05/20 01:21:20 jongfoster
442 * Version 2.9.4 checkin.
443 * - Merged popupfile and cookiefile, and added control over PCRS
444 * filtering, in new "actionsfile".
445 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
446 * file error you now get a message box (in the Win32 GUI) rather
447 * than the program exiting with no explanation.
448 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
450 * - Removed tabs from "config"
451 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
452 * - Bumped up version number.
454 * Revision 1.2 2001/05/17 23:01:01 oes
455 * - Cleaned CRLF's from the sources and related files
457 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
458 * Initial import of version 2.9.3 source tree
461 *********************************************************************/
464 /* Declare struct FILE for vars and funcs. */
467 /* Need time_t for file_list */
469 /* Needed for pcre choice */
473 * Include appropriate regular expression libraries.
474 * Note that pcrs and pcre (native) are needed for cgi
475 * and are included anyway.
481 # ifdef PCRE_H_IN_SUBDIR
482 # include <pcre/pcre.h>
495 # include "pcreposix.h"
497 # ifdef PCRE_H_IN_SUBDIR
498 # include <pcre/pcreposix.h>
500 # include <pcreposix.h>
506 #endif /* def AMIGA */
510 * I don't want to have to #include all this just for the declaration
511 * of SOCKET. However, it looks like we have to...
526 typedef SOCKET jb_socket;
528 #define JB_INVALID_SOCKET INVALID_SOCKET
530 #else /* ndef _WIN32 */
533 * The type used by sockets. On UNIX it's an int. Microsoft decided to
534 * make it an unsigned.
536 typedef int jb_socket;
539 * The error value used for variables of type jb_socket. On UNIX this
540 * is -1, however Microsoft decided to make socket handles unsigned, so
541 * they use a different value.
544 #define JB_INVALID_SOCKET (-1)
546 #endif /* ndef _WIN32 */
550 * A standard error code. This should be JB_ERR_OK or one of the JB_ERR_xxx
555 #define JB_ERR_GENERIC -1 /* General error return value */
556 #define JB_ERR_OK 0 /**< Success, no error */
557 #define JB_ERR_MEMORY 1 /**< Out of memory */
558 #define JB_ERR_CGI_PARAMS 2 /**< Missing or corrupt CGI parameters */
559 #define JB_ERR_FILE 3 /**< Error opening, reading or writing a file */
560 #define JB_ERR_PARSE 4 /**< Error parsing file */
561 #define JB_ERR_MODIFIED 5 /**< File has been modified outside of the
562 CGI actions editor. */
563 #define JB_ERR_INTERCEPT 6 /* This page should be intercepted */
566 * This macro is used to free a pointer that may be NULL.
567 * It also sets the variable to NULL after it's been freed.
568 * The paramater should be a simple variable without side effects.
570 #define freez(X) { if(X) { free((void*)X); X = NULL ; } }
574 * Fix a problem with Solaris. There should be no effect on other
577 * Solaris's isspace() is a macro which uses it's argument directly
578 * as an array index. Therefore we need to make sure that high-bit
579 * characters generate +ve values, and ideally we also want to make
580 * the argument match the declared parameter type of "int".
582 * Note: Remember to #include <ctype.h> if you use these macros.
584 #define ijb_toupper(__X) toupper((int)(unsigned char)(__X))
585 #define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
586 #define ijb_isspace(__X) isspace((int)(unsigned char)(__X))
589 * Use for statically allocated buffers if you have no other choice.
590 * Remember to check the length of what you write into the buffer
591 * - we don't want any buffer overflows!
593 #define BUFFER_SIZE 5000
596 * Max length of CGI parameters (arbitrary limit).
598 #define CGI_PARAM_LEN_MAX 500
601 * Buffer size for capturing struct hostent data in the
602 * gethostby(name|addr)_r library calls. Since we don't
603 * loop over gethostbyname_r, the buffer must be sufficient
604 * to accomodate multiple IN A RRs, as used in DNS round robin
605 * load balancing. W3C's wwwlib uses 1K, so that should be
606 * good enough for us, too.
608 #define HOSTENT_BUFFER_SIZE 1024
611 * Do not use. Originally this was so that you can
612 * say "while (FOREVER) { ...do something... }".
613 * However, this gives a warning with some compilers (e.g. VC++).
614 * Instead, use "for (;;) { ...do something... }".
619 * Default IP address to listen on, as a string.
620 * Set to "127.0.0.1".
622 #define HADDR_DEFAULT "127.0.0.1"
625 * Default port to listen on, as a number.
628 #define HADDR_PORT 8118
631 /* Forward def for struct client_state */
632 struct configuration_spec;
636 * Entry in a linked list of strings.
641 * The string. The "const" is only to discourage modification,
642 * you can actually change it if you *really* want to.
643 * You can even freez() it and replace it with another
644 * malloc()d string. If you replace it with NULL, the list
645 * functions will work, just be careful next time you iterate
646 * through the list in your own code.
648 * FIXME: Should we remove the "const"?
652 /** Next entry in the linked list, or NULL if no more. */
653 struct list_entry *next;
657 * A header for a linked list of strings.
661 /** First entry in the list, or NULL if the list is empty. */
662 struct list_entry *first;
664 /** Last entry in the list, or NULL if the list is empty. */
665 struct list_entry *last;
670 * An entry in a map. This is a name=value pair.
674 /** The key for the map. */
676 /** The value associated with that key. */
678 /** The next map entry, or NULL if none. */
679 struct map_entry *next;
683 * A map from a string to another string.
684 * This is used for the paramaters passed in a HTTP GET request, and
685 * to store the exports when the CGI interface is filling in a template.
689 /** The first map entry, or NULL if the map is empty. */
690 struct map_entry *first;
691 /** The last map entry, or NULL if the map is empty. */
692 struct map_entry *last;
697 * A HTTP request. This includes the method (GET, POST) and
700 * This is also used whenever we want to match a URL against a
701 * URL pattern. This always contains the URL to match, and never
702 * a URL pattern. (See struct url_spec).
706 char *cmd; /**< Whole command line: method, URL, Version */
707 char *ocmd; /**< Backup of original cmd for CLF logging */
708 char *gpc; /**< HTTP method: GET, POST, ... */
709 char *url; /**< The URL */
710 char *ver; /**< Protocol version */
711 int status; /**< HTTP Status */
713 char *host; /**< Host part of URL */
714 int port; /**< Port of URL or 80 (default) */
715 char *path; /**< Path of URL */
716 char *hostport; /**< host[:port] */
717 int ssl; /**< Flag if protocol is https */
719 char *host_ip_addr_str; /**< String with dotted decimal representation
720 of host's IP. NULL before connect_to() */
722 char *dbuffer; /**< Buffer with '\0'-delimited domain name. */
723 char **dvec; /**< List of pointers to the strings in dbuffer. */
724 int dcount; /**< How many parts to this domain? (length of dvec) */
726 const struct forward_spec *fwd ;
732 * Response generated by CGI, blocker, or error handler
736 char *status; /**< HTTP status (string). */
737 struct list headers[1]; /**< List of header lines. */
738 char *head; /**< Formatted http response head. */
739 size_t head_length; /**< Length of http response head. */
740 char *body; /**< HTTP document body. */
741 size_t content_length; /**< Length of body, REQUIRED if binary body. */
742 int is_static; /**< Nonzero if the content will never change and
743 should be cached by the browser (e.g. images). */
751 /** The string which was parsed to produce this url_spec.
752 Used for debugging or display only. */
755 char *dbuffer; /**< Buffer with '\0'-delimited domain name, or NULL to match all hosts. */
756 char **dvec; /**< List of pointers to the strings in dbuffer. */
757 int dcount; /**< How many parts to this domain? (length of dvec) */
758 int unanchored; /**< Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT. */
760 int port; /**< The port number, or 0 to match all ports. */
762 char *path; /**< The source for the regex. */
763 int pathlen; /**< ==strlen(path). Needed for prefix matching. FIXME: Now obsolete? */
764 regex_t *preg; /**< Regex for matching path part */
768 * If you declare a static url_spec, this is the value to initialize it to zero.
770 #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL }
773 * Constant for host part matching in URLs. If set, indicates that the start of
774 * the pattern must match the start of the URL. E.g. this is not set for the
775 * pattern ".example.com", so that it will match both "example.com" and
776 * "www.example.com". It is set for the pattern "example.com", which makes it
777 * match "example.com" only, not "www.example.com".
779 #define ANCHOR_LEFT 1
782 * Constant for host part matching in URLs. If set, indicates that the end of
783 * the pattern must match the end of the URL. E.g. this is not set for the
784 * pattern "ad.", so that it will match any host called "ad", irrespective
785 * of how many subdomains are in the fully-qualified domain name.
787 #define ANCHOR_RIGHT 2
791 * An I/O buffer. Holds a string which can be appended to, and can have data
792 * removed from the beginning.
796 char *buf; /**< Start of buffer */
797 char *cur; /**< Start of relevant data */
798 char *eod; /**< End of relevant data */
799 size_t size; /**< Size as malloc()ed */
804 * Return the number of bytes in the I/O buffer associated with the passed
805 * client_state pointer.
808 #define IOB_PEEK(CSP) ((CSP->iob->cur > CSP->iob->eod) ? (CSP->iob->eod - CSP->iob->cur) : 0)
812 * Remove any data in the I/O buffer associated with the passed
813 * client_state pointer.
815 #define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob));
817 /* Bits for csp->content_type */
818 #define CT_TEXT 1 /**< csp->content_type bitmask:
819 Suitable for pcrs filtering. */
820 #define CT_GIF 2 /**< csp->content_type bitmask:
821 Suitable for GIF filtering. */
822 #define CT_TABOO 4 /**< csp->content_type bitmask:
823 DO NOT filter, irrespective of other flags. */
826 * The mask which includes all actions.
828 #define ACTION_MASK_ALL (~0UL)
831 * The most compatible set of actions - i.e. none.
833 #define ACTION_MOST_COMPATIBLE 0x00000000UL
835 /** Action bitmap: Block the request. */
836 #define ACTION_BLOCK 0x00000001UL
837 /** Action bitmap: Deanimate if it's a GIF. */
838 #define ACTION_DEANIMATE 0x00000002UL
839 /** Action bitmap: Downgrade HTTP/1.1 to 1.0. */
840 #define ACTION_DOWNGRADE 0x00000004UL
841 /** Action bitmap: Fast redirects. */
842 #define ACTION_FAST_REDIRECTS 0x00000008UL
843 /** Action bitmap: Remove existing "Forwarded" header, and do not add another. */
844 #define ACTION_HIDE_FORWARDED 0x00000010UL
845 /** Action bitmap: Hide "From" header. */
846 #define ACTION_HIDE_FROM 0x00000020UL
847 /** Action bitmap: Hide "Referer" header. (sic - follow HTTP, not English). */
848 #define ACTION_HIDE_REFERER 0x00000040UL
849 /** Action bitmap: Hide "User-Agent" and similar headers. */
850 #define ACTION_HIDE_USER_AGENT 0x00000080UL
851 /** Action bitmap: This is an image. */
852 #define ACTION_IMAGE 0x00000100UL
853 /** Action bitmap: Sets the image blocker. */
854 #define ACTION_IMAGE_BLOCKER 0x00000200UL
855 /** Action bitmap: Prevent compression. */
856 #define ACTION_NO_COMPRESSION 0x00000400UL
857 /** Action bitmap: Change cookies to session only cookies. */
858 #define ACTION_NO_COOKIE_KEEP 0x00000800UL
859 /** Action bitmap: Block rending cookies. */
860 #define ACTION_NO_COOKIE_READ 0x00001000UL
861 /** Action bitmap: Block setting cookies. */
862 #define ACTION_NO_COOKIE_SET 0x00002000UL
863 /** Action bitmap: Filter out popups. */
864 #define ACTION_NO_POPUPS 0x00004000UL
865 /** Action bitmap: Send a vanilla wafer. */
866 #define ACTION_VANILLA_WAFER 0x00008000UL
867 /** Action bitmap: Limit CONNECT requests to safe ports. */
868 #define ACTION_LIMIT_CONNECT 0x00010000UL
870 /** Action string index: How to deanimate GIFs */
871 #define ACTION_STRING_DEANIMATE 0
872 /** Action string index: Replacement for "From:" header */
873 #define ACTION_STRING_FROM 1
874 /** Action string index: How to block images */
875 #define ACTION_STRING_IMAGE_BLOCKER 2
876 /** Action string index: Replacement for "Referer:" header */
877 #define ACTION_STRING_REFERER 3
878 /** Action string index: Replacement for "User-Agent:" header */
879 #define ACTION_STRING_USER_AGENT 4
880 /** Action string index: Legal CONNECT ports. */
881 #define ACTION_STRING_LIMIT_CONNECT 5
882 /** Number of string actions. */
883 #define ACTION_STRING_COUNT 6
885 /** Index into current_action_spec::multi[] for headers to add. */
886 #define ACTION_MULTI_ADD_HEADER 0
887 /** Index into current_action_spec::multi[] for headers to add. */
888 #define ACTION_MULTI_WAFER 1
889 /** Index into current_action_spec::multi[] for filters to apply. */
890 #define ACTION_MULTI_FILTER 2
891 /** Number of multi-string actions. */
892 #define ACTION_MULTI_COUNT 3
896 * This structure contains a list of actions to apply to a URL.
897 * It only contains positive instructions - no "-" options.
898 * It is not used to store the actions list itself, only for
899 * url_actions() to return the current values.
901 struct current_action_spec
903 /** Actions to apply. A bit set to "1" means perform the action. */
907 * Paramaters for those actions that require them.
908 * Each entry is valid if & only if the corresponding entry in "flags" is
911 char * string[ACTION_STRING_COUNT];
913 /** Lists of strings for multi-string actions. */
914 struct list multi[ACTION_MULTI_COUNT][1];
919 * This structure contains a set of changes to actions.
920 * It can contain both positive and negative instructions.
921 * It is used to store an entry in the actions list.
925 unsigned long mask; /**< Actions to keep. A bit set to "0" means remove action. */
926 unsigned long add; /**< Actions to add. A bit set to "1" means add action. */
929 * Paramaters for those actions that require them.
930 * Each entry is valid if & only if the corresponding entry in "flags" is
933 char * string[ACTION_STRING_COUNT];
935 /** Lists of strings to remove, for multi-string actions. */
936 struct list multi_remove[ACTION_MULTI_COUNT][1];
938 /** If nonzero, remove *all* strings from the multi-string action. */
939 int multi_remove_all[ACTION_MULTI_COUNT];
941 /** Lists of strings to add, for multi-string actions. */
942 struct list multi_add[ACTION_MULTI_COUNT][1];
947 * This structure is used to store the actions list.
949 * It contains a URL pattern, and the chages to the actions.
950 * It is a linked list.
954 struct url_spec url[1]; /**< URL pattern. */
956 struct action_spec action[1]; /**< Actions. */
958 struct url_actions * next; /**< Next action in file, or NULL. */
963 * Flags for use in csp->flags
967 * Flag for csp->flags: Set if this client is processing data.
968 * Cleared when the thread associated with this structure dies.
970 #define CSP_FLAG_ACTIVE 0x01
973 * Flag for csp->flags: Set if the server's reply is in "chunked"
976 #define CSP_FLAG_CHUNKED 0x02
979 * Flag for csp->flags: Set if this request was enforced, although it would
980 * normally have been blocked.
982 #define CSP_FLAG_FORCED 0x04
985 * Flag for csp->flags: Set if any modification to the body was done.
987 #define CSP_FLAG_MODIFIED 0x08
990 * Flag for csp->flags: Set if request was blocked.
992 #define CSP_FLAG_REJECTED 0x10
995 * Flag for csp->flags: Set if we are toggled on (FEATURE_TOGGLE).
997 #define CSP_FLAG_TOGGLED_ON 0x20
1001 * Maximum number of actions files. This limit is arbitrary - it's just used
1004 #define MAX_ACTION_FILES 10
1007 * The state of a Privoxy processing thread.
1011 /** The proxy's configuration */
1012 struct configuration_spec * config;
1014 /** The actions to perform on the current request */
1015 struct current_action_spec action[1];
1017 /** socket to talk to client (web browser) */
1020 /** socket to talk to server (web server or proxy) */
1023 /** Multi-purpose flag container, see CSP_FLAG_* above */
1024 unsigned short int flags;
1026 /** Client PC's IP address, as reported by the accept() function.
1029 /** Client PC's IP address, as reported by the accept() function.
1033 /** Our IP address. I.e. the IP address that the client used to reach us,
1035 char *my_ip_addr_str;
1037 /** Our hostname. I.e. the reverse DNS of the IP address that the client
1038 used to reach us, as a string. */
1041 /** The URL that was requested */
1042 struct http_request http[1];
1044 /** An I/O buffer used for buffering data read from the network */
1047 /** List of all headers for this request */
1048 struct list headers[1];
1050 /** List of all cookies for this request */
1051 struct list cookie_list[1];
1053 /** MIME-Type key, see CT_* above */
1054 unsigned short int content_type;
1056 /** The "X-Forwarded-For:" header sent by the client */
1059 /** Actions files associated with this client */
1060 struct file_list *actions_list[MAX_ACTION_FILES];
1062 /** pcrs job file. */
1063 struct file_list *rlist;
1065 /** Length after content modification. */
1066 size_t content_length;
1068 #ifdef FEATURE_TRUST
1071 struct file_list *tlist;
1073 #endif /* def FEATURE_TRUST */
1075 /** Next thread in linked list. Only read or modify from the main thread! */
1076 struct client_state *next;
1078 char *(*content_filter)() ;
1079 int all_headers_read ;
1085 * A function to add a header
1087 typedef jb_err (*add_header_func_ptr)(struct client_state *);
1090 * A function to process a header
1092 typedef jb_err (*parser_func_ptr )(struct client_state *, char **);
1096 * List of functions to run on a list of headers
1100 /** The header prefix to match */
1103 /** The length of the prefix to match */
1106 /** The function to apply to this line */
1107 parser_func_ptr parser;
1112 * List of available CGI functions.
1114 struct cgi_dispatcher
1116 /** The URL of the CGI, relative to the CGI root. */
1117 const char * const name;
1119 /** The handler function for the CGI */
1120 jb_err (* const handler)(struct client_state *csp, struct http_response *rsp, const struct map *parameters);
1122 /** The description of the CGI, to appear on the main menu, or NULL to hide it. */
1123 const char * const description;
1128 * A data file used by Privoxy. Kept in a linked list.
1133 * This is a pointer to the data structures associated with the file.
1134 * Read-only once the structure has been created.
1139 * The unloader function.
1140 * Normally NULL. When we are finished with file (i.e. when we have
1141 * loaded a new one), set to a pointer to an unloader function.
1142 * Unloader will be called by sweep() (called from main loop) when
1143 * all clients using this file are done. This prevents threading
1146 void (*unloader)(void *);
1149 * Used internally by sweep(). Do not access from elsewhere.
1154 * File last-modified time, so we can check if file has been changed.
1155 * Read-only once the structure has been created.
1157 time_t lastmodified;
1160 * The full filename.
1165 * Pointer to next entry in the linked list of all "file_list"s.
1166 * This linked list is so that sweep() can navigate it.
1167 * Since sweep() can remove items from the list, we must be careful
1168 * to only access this value from main thread (when we know sweep
1169 * won't be running).
1171 struct file_list *next;
1175 #ifdef FEATURE_TRUST
1178 * The format of a trust file when loaded into memory.
1182 struct url_spec url[1]; /**< The URL pattern */
1183 int reject; /**< FIXME: Please document this! */
1184 struct block_spec *next; /**< Next entry in linked list */
1187 #endif /* def FEATURE_TRUST */
1190 #define SOCKS_NONE 0 /**< Don't use a SOCKS server */
1191 #define SOCKS_4 40 /**< original SOCKS 4 protocol */
1192 #define SOCKS_4A 41 /**< as modified for hosts w/o external DNS */
1196 * How to forward a connection to a parent proxy.
1200 /** URL pattern that this forward_spec is for. */
1201 struct url_spec url[1];
1203 /** Connection type. Must be SOCKS_NONE, SOCKS_4, or SOCKS_4A. */
1206 /** SOCKS server hostname. Only valid if "type" is SOCKS_4 or SOCKS_4A. */
1209 /** SOCKS server port. */
1212 /** Parent HTTP proxy hostname, or NULL for none. */
1215 /** Parent HTTP proxy port. */
1218 /** Next entry in the linked list. */
1219 struct forward_spec *next;
1224 * Initializer for a static struct forward_spec.
1226 #define FORWARD_SPEC_INITIALIZER { { URL_SPEC_INITIALIZER }, 0, NULL, 0, NULL, 0, NULL }
1230 * This struct represents one filter (one block) from
1231 * the re_filterfile. If there is more than one filter
1232 * in the file, the file will be represented by a
1233 * chained list of re_filterfile specs.
1235 struct re_filterfile_spec
1237 char *name; /**< Name from FILTER: statement in re_filterfile. */
1238 char *description; /**< Description from FILTER: statement in re_filterfile. */
1239 struct list patterns[1]; /**< The patterns from the re_filterfile. */
1240 pcrs_job *joblist; /**< The resulting compiled pcrs_jobs. */
1241 struct re_filterfile_spec *next; /**< The pointer for chaining. */
1247 #define ACL_PERMIT 1 /**< Accept connection request */
1248 #define ACL_DENY 2 /**< Reject connection request */
1251 * An IP address pattern. Used to specify networks in the ACL.
1253 struct access_control_addr
1255 unsigned long addr; /**< The IP address as an integer. */
1256 unsigned long mask; /**< The network mask as an integer. */
1257 unsigned long port; /**< The port number. */
1261 * An access control list (ACL) entry.
1263 * This is a linked list.
1265 struct access_control_list
1267 struct access_control_addr src[1]; /**< Client IP address */
1268 struct access_control_addr dst[1]; /**< Website or parent proxy IP address */
1270 short action; /**< ACL_PERMIT or ACL_DENY */
1271 struct access_control_list *next; /**< The next entry in the ACL. */
1274 #endif /* def FEATURE_ACL */
1277 /** Maximum number of loaders (actions, re_filter, ...) */
1281 /** configuration_spec::feature_flags: CGI actions editor. */
1282 #define RUNTIME_FEATURE_CGI_EDIT_ACTIONS 1
1284 /** configuration_spec::feature_flags: Web-based toggle. */
1285 #define RUNTIME_FEATURE_CGI_TOGGLE 2
1289 * Data loaded from the configuration file.
1291 * (Anomaly: toggle is still handled through a global, not this structure)
1293 struct configuration_spec
1298 /** Nonzero to enable multithreading. */
1302 * Bitmask of features that can be enabled/disabled through the config
1303 * file. Currently defined bits:
1305 * - RUNTIME_FEATURE_CGI_EDIT_ACTIONS
1306 * - RUNTIME_FEATURE_CGI_TOGGLE
1308 unsigned feature_flags;
1310 /** The log file name. */
1311 const char *logfile;
1313 /** The config file directory. */
1314 const char *confdir;
1316 /** The log file directory. */
1319 /** The full paths to the actions files. */
1320 const char *actions_file[MAX_ACTION_FILES];
1322 /** The short names of the actions files. */
1323 const char *actions_file_short[MAX_ACTION_FILES];
1325 /** The administrator's email address */
1326 char *admin_address;
1328 /** A URL with info on this proxy */
1329 char *proxy_info_url;
1331 /** URL to the user manual (on our website or local copy) */
1334 /** The file name of the pcre filter file */
1335 const char *re_filterfile;
1337 #ifdef FEATURE_COOKIE_JAR
1339 /** The file name of the cookie jar file */
1340 const char * jarfile;
1342 /** The handle to the cookie jar file */
1345 #endif /* def FEATURE_COOKIE_JAR */
1347 /** IP address to bind to. Defaults to HADDR_DEFAULT == 127.0.0.1. */
1350 /** Port to bind to. Defaults to HADDR_PORT == 8118. */
1353 /** Size limit for IOB */
1354 size_t buffer_limit;
1356 #ifdef FEATURE_TRUST
1358 /** The file name of the trust file. */
1359 const char * trustfile;
1361 /** FIXME: DOCME: Document this. */
1362 struct list trust_info[1];
1364 /** FIXME: DOCME: Document this. */
1365 struct url_spec *trust_list[64];
1367 #endif /* def FEATURE_TRUST */
1371 /** The access control list (ACL). */
1372 struct access_control_list *acl;
1374 #endif /* def FEATURE_ACL */
1376 /** Information about parent proxies (forwarding). */
1377 struct forward_spec *forward;
1379 /** All options from the config file, HTML-formatted. */
1382 /** The configuration file object. */
1383 struct file_list *config_file_list;
1385 /** List of loaders */
1386 int (*loaders[NLOADERS])(struct client_state *);
1388 /** Nonzero if we need to bind() to the new port. */
1392 /** Calculates the number of elements in an array, using sizeof. */
1393 #define SZ(X) (sizeof(X) / sizeof(*X))
1395 #ifdef FEATURE_FORCE_LOAD
1396 /** The force load URL prefix. */
1397 #define FORCE_PREFIX "/PRIVOXY-FORCE"
1398 #endif /* def FEATURE_FORCE_LOAD */
1400 #ifdef FEATURE_NO_GIFS
1401 /** The MIME type for images ("image/png" or "image/gif"). */
1402 #define BUILTIN_IMAGE_MIMETYPE "image/png"
1404 #define BUILTIN_IMAGE_MIMETYPE "image/gif"
1405 #endif /* def FEATURE_NO_GIFS */
1412 /** URL for the Privoxy home page. */
1413 #define HOME_PAGE_URL "http://www.privoxy.org/"
1415 /** URL for the Privoxy user manual. */
1416 #define USER_MANUAL_URL HOME_PAGE_URL "/" VERSION "/user-manual/"
1418 /** Prefix for actions help links (append to USER_MANUAL_URL). */
1419 #define ACTIONS_HELP_PREFIX "actions-file.html#"
1421 /** Prefix for config option help links (append to USER_MANUAL_URL). */
1422 #define CONFIG_HELP_PREFIX "config.html#"
1425 * The "hosts" to intercept and display CGI pages.
1426 * First one is a hostname only, second one can specify host and path.
1429 * 1) Do not specify the http: prefix
1430 * 2) CGI_SITE_2_PATH must not end with /, one will be added automatically.
1431 * 3) CGI_SITE_2_PATH must start with /, unless it is the empty string.
1433 #define CGI_SITE_1_HOST "p.p"
1434 #define CGI_SITE_2_HOST "config.privoxy.org"
1435 #define CGI_SITE_2_PATH ""
1438 * The prefix for CGI pages. Written out in generated HTML.
1439 * INCLUDES the trailing slash.
1441 #define CGI_PREFIX "http://" CGI_SITE_2_HOST CGI_SITE_2_PATH "/"
1448 #endif /* ndef PROJECT_H_INCLUDED */