1 const char jcc_rcs[] = "$Id: jcc.c,v 1.98 2006/08/24 11:01:34 fabiankeil Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/jcc.c,v $
6 * Purpose : Main file. Contains main() method, main loop, and
7 * the main connection-handling function.
9 * Copyright : Written by and Copyright (C) 2001 the SourceForge
10 * Privoxy team. http://www.privoxy.org/
12 * Based on the Internet Junkbuster originally written
13 * by and Copyright (C) 1997 Anonymous Coders and
14 * Junkbusters Corporation. http://www.junkbusters.com
16 * This program is free software; you can redistribute it
17 * and/or modify it under the terms of the GNU General
18 * Public License as published by the Free Software
19 * Foundation; either version 2 of the License, or (at
20 * your option) any later version.
22 * This program is distributed in the hope that it will
23 * be useful, but WITHOUT ANY WARRANTY; without even the
24 * implied warranty of MERCHANTABILITY or FITNESS FOR A
25 * PARTICULAR PURPOSE. See the GNU General Public
26 * License for more details.
28 * The GNU General Public License should be included with
29 * this file. If not, you can view it at
30 * http://www.gnu.org/copyleft/gpl.html
31 * or write to the Free Software Foundation, Inc., 59
32 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
36 * Revision 1.98 2006/08/24 11:01:34 fabiankeil
37 * --user fix. Only use the user as group if no group is specified.
38 * Solves BR 1492612. Thanks to Spinor S. and David Laight.
40 * Revision 1.97 2006/08/18 15:23:17 david__schmidt
41 * Windows service (re-)integration
45 * --install[:service_name]
46 * --uninstall[:service_name]
49 * They work as follows:
50 * --install will create a service for you and then terminate.
51 * By default the service name will be "privoxy" (without the quotes).
52 * However you can run multiple services if you wish, just by adding
53 * a colon and then a name (no spaces).
55 * --uninstall follows the exact same rules a --install.
57 * --service is used when the program is executed by the service
58 * control manager, and in normal circumstances would never be
59 * used as a command line argument.
61 * Revision 1.96 2006/08/15 20:12:36 david__schmidt
62 * Windows service integration
64 * Revision 1.95 2006/08/03 02:46:41 david__schmidt
65 * Incorporate Fabian Keil's patch work:
\rhttp://www.fabiankeil.de/sourcecode/privoxy/
67 * Revision 1.94 2006/07/18 14:48:46 david__schmidt
68 * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
69 * with what was really the latest development (the v_3_0_branch branch)
71 * Revision 1.92.2.16 2005/04/03 20:10:50 david__schmidt
72 * Thanks to Jindrich Makovicka for a race condition fix for the log
73 * file. The race condition remains for non-pthread implementations.
74 * Reference patch #1175720.
76 * Revision 1.92.2.15 2004/10/03 12:53:32 david__schmidt
77 * Add the ability to check jpeg images for invalid
78 * lengths of comment blocks. Defensive strategy
79 * against the exploit:
80 * Microsoft Security Bulletin MS04-028
81 * Buffer Overrun in JPEG Processing (GDI+) Could
82 * Allow Code Execution (833987)
83 * Enabled with +inspect-jpegs in actions files.
85 * Revision 1.92.2.14 2003/12/12 12:52:53 oes
86 * - Fixed usage info for non-unix platforms
87 * - Fixed small cmdline parsing bug
89 * Revision 1.92.2.13 2003/11/27 19:20:27 oes
90 * Diagnostics: Now preserve the returncode of pthread_create
91 * in errno. Closes BR #775721. Thanks to Geoffrey Hausheer.
93 * Revision 1.92.2.12 2003/07/11 11:34:19 oes
94 * No longer ignore SIGCHLD. Fixes bug #769381
96 * Revision 1.92.2.11 2003/05/14 12:32:02 oes
97 * Close jarfile on graceful exit, remove stray line
99 * Revision 1.92.2.10 2003/05/08 15:13:46 oes
100 * Cosmetics: Killed a warning, a typo and an allocation left at exit
102 * Revision 1.92.2.9 2003/04/03 15:08:42 oes
103 * No longer rely on non-POSIX.1 extensions of getcwd().
106 * Revision 1.92.2.8 2003/03/31 13:12:32 oes
107 * Replaced setenv() by posix-compliant putenv()
108 * Thanks to Neil McCalden (nmcc AT users.sf.net).
110 * Revision 1.92.2.7 2003/03/17 16:48:59 oes
111 * Added chroot ability, thanks to patch by Sviatoslav Sviridov
113 * Revision 1.92.2.6 2003/03/11 11:55:00 oes
114 * Clean-up and extension of improvements for forked mode:
115 * - Child's return code now consists of flags RC_FLAG_*
116 * - Reporting toggle to parent now properly #ifdef'ed
117 * - Children now report blocking to parent. This enables
118 * statistics in forked mode
120 * Revision 1.92.2.5 2003/03/10 23:45:32 oes
121 * Fixed bug #700381: Non-Threaded version now capable of being toggled.
122 * Children now report having been toggled through _exit(17), parents
123 * watch for that code and toggle themselves if found.
125 * Revision 1.92.2.4 2003/03/07 03:41:04 david__schmidt
126 * Wrapping all *_r functions (the non-_r versions of them) with
127 * mutex semaphores for OSX. Hopefully this will take care of all
128 * of those pesky crash reports.
130 * Revision 1.92.2.3 2003/02/28 12:53:06 oes
131 * Fixed two mostly harmless mem leaks
133 * Revision 1.92.2.2 2002/11/20 14:37:47 oes
134 * Fix: Head of global clients list now initialized to NULL
136 * Revision 1.92.2.1 2002/09/25 14:52:24 oes
137 * Added basic support for OPTIONS and TRACE HTTP methods:
138 * - New interceptor direct_response() added in chat().
139 * - sed() moved to earlier in the process, so that the
140 * Host: header is evaluated before actions and forwarding
143 * Revision 1.92 2002/05/08 16:00:46 oes
144 * Chat's buffer handling:
145 * - Fixed bug with unchecked out-of-mem conditions
146 * while reading client request & server headers
147 * - No longer predict if the buffer limit will be exceeded
148 * in the next read -- check add_to_iob's new
149 * return code. If buffer couldn't be extended
150 * (policy or out-of-mem) while
151 * - reading from client: abort
152 * - reading server headers: send error page
153 * - buffering server body for filter: flush,
154 * and if that fails: send error page
156 * Revision 1.91 2002/04/08 20:35:58 swa
159 * Revision 1.90 2002/04/02 14:57:28 oes
160 * Made sending wafers independent of FEATURE_COOKIE_JAR
162 * Revision 1.89 2002/03/31 17:18:59 jongfoster
163 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
165 * Revision 1.88 2002/03/27 14:32:43 david__schmidt
166 * More compiler warning message maintenance
168 * Revision 1.87 2002/03/26 22:29:54 swa
169 * we have a new homepage!
171 * Revision 1.86 2002/03/25 17:04:55 david__schmidt
172 * Workaround for closing the jarfile before load_config() comes around again
174 * Revision 1.85 2002/03/24 15:23:33 jongfoster
177 * Revision 1.84 2002/03/24 13:25:43 swa
178 * name change related issues
180 * Revision 1.83 2002/03/16 23:54:06 jongfoster
181 * Adding graceful termination feature, to help look for memory leaks.
182 * If you enable this (which, by design, has to be done by hand
183 * editing config.h) and then go to http://i.j.b/die, then the program
184 * will exit cleanly after the *next* request. It should free all the
185 * memory that was used.
187 * Revision 1.82 2002/03/13 00:27:05 jongfoster
190 * Revision 1.81 2002/03/12 01:42:50 oes
191 * Introduced modular filters
193 * Revision 1.80 2002/03/11 22:07:05 david__schmidt
194 * OS/2 port maintenance:
195 * - Fixed EMX build - it had decayed a little
196 * - Fixed inexplicable crash during FD_ZERO - must be due to a bad macro.
197 * substituted a memset for now.
199 * Revision 1.79 2002/03/09 20:03:52 jongfoster
200 * - Making various functions return int rather than size_t.
201 * (Undoing a recent change). Since size_t is unsigned on
202 * Windows, functions like read_socket that return -1 on
203 * error cannot return a size_t.
205 * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
206 * crashes, and also frequently caused JB to jump to 100%
207 * CPU and stay there. (Because it thought it had just
208 * read ((unsigned)-1) == 4Gb of data...)
210 * - The signature of write_socket has changed, it now simply
211 * returns success=0/failure=nonzero.
213 * - Trying to get rid of a few warnings --with-debug on
214 * Windows, I've introduced a new type "jb_socket". This is
215 * used for the socket file descriptors. On Windows, this
216 * is SOCKET (a typedef for unsigned). Everywhere else, it's
217 * an int. The error value can't be -1 any more, so it's
218 * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
219 * Windows it maps to the #define INVALID_SOCKET.)
221 * - The signature of bind_port has changed.
223 * Revision 1.78 2002/03/08 21:35:04 oes
224 * Added optional group supplement to --user option. Will now use default group of user if no group given
226 * Revision 1.77 2002/03/07 03:52:06 oes
227 * - Fixed compiler warnings etc
228 * - Improved handling of failed DNS lookups
230 * Revision 1.76 2002/03/06 22:54:35 jongfoster
231 * Automated function-comment nitpicking.
233 * Revision 1.75 2002/03/06 10:02:19 oes
234 * Fixed stupid bug when --user was not given
236 * Revision 1.74 2002/03/06 00:49:31 jongfoster
237 * Fixing warning on Windows
238 * Making #ifdefs that refer to the same variable consistently
239 * use #ifdef unix rather than mixing #ifdef unix & #ifndef OS2
241 * Revision 1.73 2002/03/05 23:57:30 hal9
242 * Stray character 's' on line 1618 was breaking build.
244 * Revision 1.72 2002/03/05 21:33:45 david__schmidt
245 * - Re-enable OS/2 building after new parms were added
246 * - Fix false out of memory report when resolving CGI templates when no IP
247 * address is available of failed attempt (a la no such domain)
249 * Revision 1.71 2002/03/05 18:13:56 oes
250 * Added --user option
252 * Revision 1.70 2002/03/05 04:52:42 oes
253 * Deleted non-errlog debugging code
255 * Revision 1.69 2002/03/04 23:50:00 jongfoster
256 * Splitting off bind_port() call into bind_port_helper(), with
259 * Revision 1.68 2002/03/04 20:17:32 oes
262 * Revision 1.67 2002/03/04 18:18:57 oes
263 * - Removed _DEBUG mode
264 * - Cleand up cmdline parsing
265 * - Introduced --no-daemon, --pidfile options
266 * - Cleaned up signal handling:
267 * - Terminate cleanly on INT, TERM and ABRT
268 * - Schedule logfile for re-opening on HUP
269 * - Ignore CHLD and PIPE
270 * - Leave the rest with their default handlers
271 * - Uniform handler registration
272 * - Added usage() function
273 * - Played styleguide police
275 * Revision 1.66 2002/03/03 15:06:55 oes
276 * Re-enabled automatic config reloading
278 * Revision 1.65 2002/03/03 14:49:11 oes
279 * Fixed CLF logging: Now uses client's original HTTP request
281 * Revision 1.64 2002/03/03 09:18:03 joergs
282 * Made jumbjuster work on AmigaOS again.
284 * Revision 1.63 2002/03/02 04:14:50 david__schmidt
285 * Clean up a little CRLF unpleasantness that suddenly appeared
287 * Revision 1.62 2002/02/20 23:17:23 jongfoster
288 * Detecting some out-of memory conditions and exiting with a log message.
290 * Revision 1.61 2002/01/17 21:01:52 jongfoster
291 * Moving all our URL and URL pattern parsing code to urlmatch.c.
293 * Revision 1.60 2001/12/30 14:07:32 steudten
294 * - Add signal handling (unix)
295 * - Add SIGHUP handler (unix)
296 * - Add creation of pidfile (unix)
297 * - Add action 'top' in rc file (RH)
298 * - Add entry 'SIGNALS' to manpage
299 * - Add exit message to logfile (unix)
301 * Revision 1.59 2001/12/13 14:07:18 oes
302 * Fixed Bug: 503 error page now sent OK
304 * Revision 1.58 2001/11/30 23:37:24 jongfoster
305 * Renaming the Win32 config file to config.txt - this is almost the
306 * same as the corresponding UNIX name "config"
308 * Revision 1.57 2001/11/16 00:47:43 jongfoster
309 * Changing the tty-disconnection code to use setsid().
311 * Revision 1.56 2001/11/13 20:20:54 jongfoster
312 * Tabs->spaces, fixing a bug with missing {} around an if()
314 * Revision 1.55 2001/11/13 20:14:53 jongfoster
315 * Patch for FreeBSD setpgrp() as suggested by Alexander Lazic
317 * Revision 1.54 2001/11/07 00:03:14 steudten
318 * Give reliable return value if an error
319 * occurs not just 0 with new daemon mode.
321 * Revision 1.53 2001/11/05 21:41:43 steudten
322 * Add changes to be a real daemon just for unix os.
323 * (change cwd to /, detach from controlling tty, set
324 * process group and session leader to the own process.
326 * Add some fatal-error log message for failed malloc().
327 * Add '-d' if compiled with 'configure --with-debug' to
328 * enable debug output.
330 * Revision 1.52 2001/10/26 20:11:20 jongfoster
331 * Fixing type mismatch
333 * Revision 1.51 2001/10/26 17:38:28 oes
336 * Revision 1.50 2001/10/25 03:40:48 david__schmidt
337 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
338 * threads to call select() simultaneously. So, it's time to do a real, live,
339 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
340 * (native). Both versions will work, but using __OS2__ offers multi-threading.
342 * Revision 1.49 2001/10/23 21:41:35 jongfoster
343 * Added call to initialize the (statically-allocated of course)
344 * "out of memory" CGI response.
346 * Revision 1.48 2001/10/10 19:56:46 jongfoster
347 * Moving some code that wasn't cookie-related out of an #ifdef
350 * Revision 1.47 2001/10/10 16:44:36 oes
351 * Added CONNECT destination port limitation check
353 * Revision 1.46 2001/10/08 15:17:41 oes
354 * Re-enabled SSL forwarding
356 * Revision 1.45 2001/10/07 15:42:11 oes
357 * Replaced 6 boolean members of csp with one bitmap (csp->flags)
359 * Moved downgrading of the HTTP version from parse_http_request to
360 * chat(), since we can't decide if it is necessary before we have
361 * determined the actions for the URL. The HTTP command is now
362 * *always* re-built so the repairs need no longer be special-cased.
364 * filter_popups now gets a csp pointer so it can raise the new
365 * CSP_FLAG_MODIFIED flag.
369 * Added configurable size limit for the IOB. If the IOB grows so
370 * large that the next read would exceed the limit, the header
371 * is generated, and the header & unfiltered buffer are flushed
372 * to the client. Chat then continues in non-buffering,
373 * non-filtering body mode.
375 * Revision 1.44 2001/10/02 18:13:57 oes
378 * Revision 1.43 2001/10/02 15:32:13 oes
379 * Moved generation of hdr
381 * Revision 1.42 2001/09/21 23:02:02 david__schmidt
382 * Cleaning up 2 compiler warnings on OS/2.
384 * Revision 1.41 2001/09/16 17:05:14 jongfoster
385 * Removing unused #include showarg.h
387 * Revision 1.40 2001/09/16 15:41:45 jongfoster
388 * Fixing signed/unsigned comparison warning.
390 * Revision 1.39 2001/09/16 13:21:27 jongfoster
391 * Changes to use new list functions.
393 * Revision 1.38 2001/09/16 13:01:46 jongfoster
394 * Removing redundant function call that zeroed zalloc()'d memory.
396 * Revision 1.37 2001/09/10 11:12:24 oes
397 * Deleted unused variable
399 * Revision 1.36 2001/09/10 10:56:15 oes
400 * Silenced compiler warnings
402 * Revision 1.35 2001/07/31 14:44:22 oes
403 * Deleted unused size parameter from filter_popups()
405 * Revision 1.34 2001/07/30 22:08:36 jongfoster
406 * Tidying up #defines:
407 * - All feature #defines are now of the form FEATURE_xxx
408 * - Permanently turned off WIN_GUI_EDIT
409 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
411 * Revision 1.33 2001/07/29 19:32:00 jongfoster
412 * Renaming _main() [mingw32 only] to real_main(), for ANSI compliance.
414 * Revision 1.32 2001/07/29 18:47:05 jongfoster
415 * Adding missing #include "loadcfg.h"
417 * Revision 1.31 2001/07/29 12:17:48 oes
418 * Applied pthread fix by Paul Lieverse
420 * Revision 1.30 2001/07/25 22:57:13 jongfoster
421 * __BEOS__ no longer overrides FEATURE_PTHREAD.
422 * This is because FEATURE_PTHREAD will soon be widely used, so I
423 * want to keep it simple.
425 * Revision 1.29 2001/07/24 12:47:06 oes
426 * Applied BeOS support update by Eugenia
428 * Revision 1.28 2001/07/23 13:26:12 oes
429 * Fixed bug in popup-killing for the first read that caused binary garbage to be sent between headers and body
431 * Revision 1.27 2001/07/19 19:09:47 haroon
432 * - Added code to take care of the situation where while processing the first
433 * server response (which includes the server header), after finding the end
434 * of the headers we were not looking past the end of the headers for
435 * content modification. I enabled it for filter_popups.
436 * Someone else should look to see if other similar operations should be
437 * done to the discarded portion of the buffer.
439 * Note 2001/07/20: No, the other content modification mechanisms will process
440 * the whole iob later anyway. --oes
442 * Revision 1.26 2001/07/18 12:31:36 oes
445 * Revision 1.25 2001/07/15 19:43:49 jongfoster
446 * Supports POSIX threads.
447 * Also removed some unused #includes.
449 * Revision 1.24 2001/07/13 14:00:40 oes
450 * - Generic content modification scheme:
451 * Each feature has its own applicability flag that is set
452 * from csp->action->flags.
453 * Replaced the "filtering" int flag , by a function pointer
454 * "content_filter" to the function that will do the content
455 * modification. If it is != NULL, the document will be buffered
456 * and processed through *content_filter, which must set
457 * csp->content_length and return a modified copy of the body
458 * or return NULL (on failiure).
459 * - Changed csp->is_text to the more generic bitmap csp->content_type
460 * which can currently take the valued CT_TEXT or CT_GIF
462 * - Removed all #ifdef PCRS
464 * Revision 1.23 2001/07/02 02:28:25 iwanttokeepanon
465 * Added "#ifdef ACL_FILES" conditional compilation to line 1291 to exclude
466 * the `block_acl' call. This prevents a compilation error when the user
467 * does not wish to use the "ACL" feature.
469 * Revision 1.22 2001/06/29 21:45:41 oes
470 * Indentation, CRLF->LF, Tab-> Space
472 * Revision 1.21 2001/06/29 13:29:36 oes
473 * - Cleaned up, improved comments
474 * - Unified all possible interceptors (CGI,
475 * block, trust, fast_redirect) in one
476 * place, with one (CGI) answer generation
477 * mechansim. Much clearer now.
478 * - Removed the GIF image generation, which
479 * is now done in filters.c:block_url()
480 * - Made error conditions like domain lookup
481 * failiure or (various) problems while talking
482 * to the server use cgi.c:error_response()
483 * instead of generating HTML/HTTP in chat() (yuck!)
484 * - Removed logentry from cancelled commit
486 * Revision 1.20 2001/06/09 10:55:28 jongfoster
487 * Changing BUFSIZ ==> BUFFER_SIZE
489 * Revision 1.19 2001/06/07 23:12:52 jongfoster
490 * Replacing function pointer in struct gateway with a directly
491 * called function forwarded_connect().
492 * Replacing struct gateway with struct forward_spec
494 * Revision 1.18 2001/06/03 19:12:16 oes
495 * introduced new cgi handling
497 * Revision 1.17 2001/06/01 20:07:23 jongfoster
498 * Now uses action +image-blocker{} rather than config->tinygif
500 * Revision 1.16 2001/06/01 18:49:17 jongfoster
501 * Replaced "list_share" with "list" - the tiny memory gain was not
502 * worth the extra complexity.
504 * Revision 1.15 2001/05/31 21:24:47 jongfoster
505 * Changed "permission" to "action" throughout.
506 * Removed DEFAULT_USER_AGENT - it must now be specified manually.
507 * Moved vanilla wafer check into chat(), since we must now
508 * decide whether or not to add it based on the URL.
510 * Revision 1.14 2001/05/29 20:14:01 joergs
511 * AmigaOS bugfix: PCRS needs a lot of stack, stacksize for child threads
514 * Revision 1.13 2001/05/29 09:50:24 jongfoster
515 * Unified blocklist/imagelist/permissionslist.
516 * File format is still under discussion, but the internal changes
519 * Also modified interceptor behaviour:
520 * - We now intercept all URLs beginning with one of the following
521 * prefixes (and *only* these prefixes):
523 * * http://ijbswa.sf.net/config/
524 * * http://ijbswa.sourceforge.net/config/
525 * - New interceptors "home page" - go to http://i.j.b/ to see it.
526 * - Internal changes so that intercepted and fast redirect pages
527 * are not replaced with an image.
528 * - Interceptors now have the option to send a binary page direct
529 * to the client. (i.e. ijb-send-banner uses this)
530 * - Implemented show-url-info interceptor. (Which is why I needed
531 * the above interceptors changes - a typical URL is
532 * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
533 * The previous mechanism would not have intercepted that, and
534 * if it had been intercepted then it then it would have replaced
537 * Revision 1.12 2001/05/27 22:17:04 oes
539 * - re_process_buffer no longer writes the modified buffer
540 * to the client, which was very ugly. It now returns the
541 * buffer, which it is then written by chat.
543 * - content_length now adjusts the Content-Length: header
544 * for modified documents rather than crunch()ing it.
545 * (Length info in csp->content_length, which is 0 for
546 * unmodified documents)
548 * - For this to work, sed() is called twice when filtering.
550 * Revision 1.11 2001/05/26 17:27:53 jongfoster
551 * Added support for CLF and fixed LOG_LEVEL_LOG.
552 * Also did CRLF->LF fix of my previous patch.
554 * Revision 1.10 2001/05/26 15:26:15 jongfoster
555 * ACL feature now provides more security by immediately dropping
556 * connections from untrusted hosts.
558 * Revision 1.9 2001/05/26 00:28:36 jongfoster
559 * Automatic reloading of config file.
560 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
561 * Most of the global variables have been moved to a new
562 * struct configuration_spec, accessed through csp->config->globalname
563 * Most of the globals remaining are used by the Win32 GUI.
565 * Revision 1.8 2001/05/25 22:43:18 jongfoster
566 * Fixing minor memory leak and buffer overflow.
568 * Revision 1.7 2001/05/25 22:34:30 jongfoster
571 * Revision 1.6 2001/05/23 00:13:58 joergs
572 * AmigaOS support fixed.
574 * Revision 1.5 2001/05/22 18:46:04 oes
576 * - Enabled filtering banners by size rather than URL
577 * by adding patterns that replace all standard banner
578 * sizes with the "Junkbuster" gif to the re_filterfile
580 * - Enabled filtering WebBugs by providing a pattern
581 * which kills all 1x1 images
583 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
584 * which is selected by the (nonstandard and therefore
585 * capital) letter 'U' in the option string.
586 * It causes the quantifiers to be ungreedy by default.
587 * Appending a ? turns back to greedy (!).
589 * - Added a new interceptor ijb-send-banner, which
590 * sends back the "Junkbuster" gif. Without imagelist or
591 * MSIE detection support, or if tinygif = 1, or the
592 * URL isn't recognized as an imageurl, a lame HTML
593 * explanation is sent instead.
595 * - Added new feature, which permits blocking remote
596 * script redirects and firing back a local redirect
598 * The feature is conditionally compiled, i.e. it
599 * can be disabled with --disable-fast-redirects,
600 * plus it must be activated by a "fast-redirects"
601 * line in the config file, has its own log level
602 * and of course wants to be displayed by show-proxy-args
603 * Note: Boy, all the #ifdefs in 1001 locations and
604 * all the fumbling with configure.in and acconfig.h
605 * were *way* more work than the feature itself :-(
607 * - Because a generic redirect template was needed for
608 * this, tinygif = 3 now uses the same.
610 * - Moved GIFs, and other static HTTP response templates
615 * - Removed some >400 CRs again (Jon, you really worked
618 * Revision 1.4 2001/05/21 19:34:01 jongfoster
619 * Made failure to bind() a fatal error.
621 * Revision 1.3 2001/05/20 01:21:20 jongfoster
622 * Version 2.9.4 checkin.
623 * - Merged popupfile and cookiefile, and added control over PCRS
624 * filtering, in new "permissionsfile".
625 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
626 * file error you now get a message box (in the Win32 GUI) rather
627 * than the program exiting with no explanation.
628 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
630 * - Removed tabs from "config"
631 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
632 * - Bumped up version number.
634 * Revision 1.2 2001/05/17 22:34:44 oes
635 * - Added hint on GIF char array generation to jcc.c
636 * - Cleaned CRLF's from the sources and related files
637 * - Repaired logging for REF and FRC
639 * Revision 1.1.1.1 2001/05/15 13:58:56 oes
640 * Initial import of version 2.9.3 source tree
643 *********************************************************************/
649 #include <sys/types.h>
656 #ifdef FEATURE_PTHREAD
658 #endif /* def FEATURE_PTHREAD */
661 # ifndef FEATURE_PTHREAD
665 # include <windows.h>
666 # include <process.h>
667 # endif /* ndef FEATURE_PTHREAD */
670 # ifndef _WIN_CONSOLE
672 # endif /* ndef _WIN_CONSOLE */
673 # include "w32svrapi.h"
675 #else /* ifndef _WIN32 */
677 # if !defined (__OS2__)
679 # include <sys/wait.h>
680 # endif /* ndef __OS2__ */
681 # include <sys/time.h>
682 # include <sys/stat.h>
683 # include <sys/ioctl.h>
686 #include <sys/termios.h>
697 # include <socket.h> /* BeOS has select() for sockets only. */
698 # include <OS.h> /* declarations for threads and stuff. */
701 # if defined(__EMX__) || defined(__OS2__)
702 # include <sys/select.h> /* OS/2/EMX needs a little help with select */
707 #define bzero(B,N) memset(B,0x00,n)
722 #include "killpopup.h"
723 #include "miscutil.h"
725 #include "jbsockets.h"
730 #include "urlmatch.h"
732 const char jcc_h_rcs[] = JCC_H_VERSION;
733 const char project_h_rcs[] = PROJECT_H_VERSION;
736 struct client_state clients[1];
737 struct file_list files[1];
739 #ifdef FEATURE_STATISTICS
740 int urls_read = 0; /* total nr of urls read inc rejected */
741 int urls_rejected = 0; /* total nr of urls rejected */
742 #endif /* def FEATURE_STATISTICS */
744 #ifdef FEATURE_GRACEFUL_TERMINATION
748 static void listen_loop(void);
749 static void chat(struct client_state *csp);
751 void serve(struct client_state *csp);
752 #else /* ifndef AMIGA */
753 static void serve(struct client_state *csp);
754 #endif /* def AMIGA */
757 static int32 server_thread(void *data);
758 #endif /* def __BEOS__ */
761 #define sleep(N) Sleep(((N) * 1000))
765 #define sleep(N) DosSleep(((N) * 100))
768 #if defined(OSX_DARWIN) || defined(__OpenBSD__)
771 * Hit OSX over the head with a hammer. Protect all *_r functions.
773 pthread_mutex_t gmtime_mutex;
774 pthread_mutex_t localtime_mutex;
775 #endif /* def OSX_DARWIN */
777 * Protect only the resolve functions for OpenBSD.
779 pthread_mutex_t gethostbyaddr_mutex;
780 pthread_mutex_t gethostbyname_mutex;
781 #endif /* defined(OSX_DARWIN) || defined(__OpenBSD__) */
783 #ifdef FEATURE_PTHREAD
784 pthread_mutex_t log_mutex;
785 pthread_mutex_t log_init_mutex;
786 #endif /* FEATURE_PTHREAD */
788 #if defined(unix) || defined(__EMX__)
789 const char *basedir = NULL;
790 const char *pidfile = NULL;
791 int received_hup_signal = 0;
792 #endif /* defined unix */
794 /* The vanilla wafer. */
795 static const char VANILLA_WAFER[] =
796 "NOTICE=TO_WHOM_IT_MAY_CONCERN_"
797 "Do_not_send_me_any_copyrighted_information_other_than_the_"
798 "document_that_I_am_requesting_or_any_of_its_necessary_components._"
799 "In_particular_do_not_send_me_any_cookies_that_"
800 "are_subject_to_a_claim_of_copyright_by_anybody._"
801 "Take_notice_that_I_refuse_to_be_bound_by_any_license_condition_"
802 "(copyright_or_otherwise)_applying_to_any_cookie._";
805 #if !defined(_WIN32) && !defined(__OS2__) && !defined(AMIGA)
806 /*********************************************************************
808 * Function : sig_handler
810 * Description : Signal handler for different signals.
811 * Exit gracefully on ABRT, TERM and INT
812 * or set a flag that will cause the errlog
813 * to be reopened by the main thread on HUP.
816 * 1 : the_signal = the signal cause this function to call
820 *********************************************************************/
821 static void sig_handler(int the_signal)
828 log_error(LOG_LEVEL_INFO, "exiting by signal %d .. bye", the_signal);
836 received_hup_signal = 1;
841 * We shouldn't be here, unless we catch signals
842 * in main() that we can't handle here!
844 log_error(LOG_LEVEL_FATAL, "sig_handler: exiting on unexpected signal %d", the_signal);
852 /*********************************************************************
856 * Description : Once a connection to the client has been accepted,
857 * this function is called (via serve()) to handle the
858 * main business of the communication. When this
859 * function returns, the caller must close the client
863 * 1 : csp = Current client state (buffers, headers, etc...)
865 * Returns : On success, the number of bytes written are returned (zero
866 * indicates nothing was written). On error, -1 is returned,
867 * and errno is set appropriately. If count is zero and the
868 * file descriptor refers to a regular file, 0 will be
869 * returned without causing any other effect. For a special
870 * file, the results are not portable.
872 *********************************************************************/
873 static void chat(struct client_state *csp)
876 * This next lines are a little ugly, but they simplifies the if statements
877 * below. Basically if TOGGLE, then we want the if to test if the
878 * CSP_FLAG_TOGGLED_ON flag ist set, else we don't. And if FEATURE_FORCE_LOAD,
879 * then we want the if to test for CSP_FLAG_FORCED , else we don't
881 #ifdef FEATURE_TOGGLE
882 # define IS_TOGGLED_ON_AND (csp->flags & CSP_FLAG_TOGGLED_ON) &&
883 #else /* ifndef FEATURE_TOGGLE */
884 # define IS_TOGGLED_ON_AND
885 #endif /* ndef FEATURE_TOGGLE */
886 #ifdef FEATURE_FORCE_LOAD
887 # define IS_NOT_FORCED_AND !(csp->flags & CSP_FLAG_FORCED) &&
888 #else /* ifndef FEATURE_FORCE_LOAD */
889 # define IS_NOT_FORCED_AND
890 #endif /* def FEATURE_FORCE_LOAD */
892 #define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND
894 char buf[BUFFER_SIZE];
902 int ms_iis5_hack = 0;
904 unsigned int socks_retries = 0;
905 const struct forward_spec * fwd;
906 struct http_request *http;
907 int len; /* for buffer sizes */
908 #ifdef FEATURE_KILL_POPUPS
909 int block_popups; /* bool, 1==will block popups */
910 int block_popups_now = 0; /* bool, 1==currently blocking popups */
911 #endif /* def FEATURE_KILL_POPUPS */
913 int pcrs_filter; /* bool, 1==will filter through pcrs */
914 int gif_deanimate; /* bool, 1==will deanimate gifs */
915 int jpeg_inspect; /* bool, 1==will inspect jpegs */
917 /* Function that does the content filtering for the current request */
918 char *(*content_filter)() = NULL;
920 /* Skeleton for HTTP response, if we should intercept the request */
921 struct http_response *rsp;
926 * Read the client's request. Note that since we're not using select() we
927 * could get blocked here if a client connected, then didn't say anything!
932 len = read_socket(csp->cfd, buf, sizeof(buf));
934 if (len <= 0) break; /* error! */
937 * If there is no memory left for buffering the
938 * request, there is nothing we can do but hang up
940 if (add_to_iob(csp, buf, len))
945 req = get_header(csp);
949 break; /* no HTTP request! */
954 continue; /* more to come! */
957 #ifdef FEATURE_FORCE_LOAD
958 /* If this request contains the FORCE_PREFIX,
959 * better get rid of it now and set the force flag --oes
962 if (strstr(req, FORCE_PREFIX))
964 strclean(req, FORCE_PREFIX);
965 log_error(LOG_LEVEL_FORCE, "Enforcing request \"%s\".\n", req);
966 csp->flags |= CSP_FLAG_FORCED;
969 #endif /* def FEATURE_FORCE_LOAD */
971 parse_http_request(req, http, csp);
976 if (http->cmd == NULL)
978 strcpy(buf, CHEADER);
979 write_socket(csp->cfd, buf, strlen(buf));
981 log_error(LOG_LEVEL_CLF, "%s - - [%T] \" \" 400 0", csp->ip_addr_str);
983 free_http_request(http);
987 /* decide how to route the HTTP request */
989 if ((fwd = forward_url(http, csp)) == NULL)
991 log_error(LOG_LEVEL_FATAL, "gateway spec is NULL!?!? This can't happen!");
992 /* Never get here - LOG_LEVEL_FATAL causes program exit */
995 /* build the http request to send to the server
996 * we have to do one of the following:
998 * create = use the original HTTP request to create a new
999 * HTTP request that has either the path component
1000 * without the http://domainspec (w/path) or the
1001 * full orininal URL (w/url)
1002 * Note that the path and/or the HTTP version may
1003 * have been altered by now.
1005 * connect = Open a socket to the host:port of the server
1006 * and short-circuit server and client socket.
1008 * pass = Pass the request unchanged if forwarding a CONNECT
1009 * request to a parent proxy. Note that we'll be sending
1010 * the CFAIL message ourselves if connecting to the parent
1011 * fails, but we won't send a CSUCCEED message if it works,
1012 * since that would result in a double message (ours and the
1013 * parent's). After sending the request to the parent, we simply
1016 * here's the matrix:
1019 * +--------+--------+
1021 * 0 | create | connect|
1023 * Forwarding +--------+--------+
1025 * 1 | create | pass |
1027 * +--------+--------+
1032 * Determine the actions for this URL
1034 #ifdef FEATURE_TOGGLE
1035 if (!(csp->flags & CSP_FLAG_TOGGLED_ON))
1037 /* Most compatible set of actions (i.e. none) */
1038 init_current_action(csp->action);
1041 #endif /* ndef FEATURE_TOGGLE */
1043 url_actions(http, csp);
1048 * Check if a CONNECT request is allowable:
1049 * In the absence of a +limit-connect action, allow only port 443.
1050 * If there is an action, allow whatever matches the specificaton.
1054 if( ( !(csp->action->flags & ACTION_LIMIT_CONNECT) && csp->http->port != 443)
1055 || (csp->action->flags & ACTION_LIMIT_CONNECT
1056 && !match_portlist(csp->action->string[ACTION_STRING_LIMIT_CONNECT], csp->http->port)) )
1058 if (csp->action->flags & ACTION_TREAT_FORBIDDEN_CONNECTS_LIKE_BLOCKS)
1060 /* The response will violate the specs, but makes unblocking easier. */
1061 log_error(LOG_LEVEL_ERROR, "Marking suspicious CONNECT request from %s for blocking.",
1063 csp->action->flags |= ACTION_BLOCK;
1068 strcpy(buf, CFORBIDDEN);
1069 write_socket(csp->cfd, buf, strlen(buf));
1070 log_error(LOG_LEVEL_CONNECT, "Denying suspicious CONNECT request from %s", csp->ip_addr_str);
1071 log_error(LOG_LEVEL_CLF, "%s - - [%T] \" \" 403 0", csp->ip_addr_str);
1079 * Downgrade http version from 1.1 to 1.0 if +downgrade
1082 if ( (http->ssl == 0)
1083 && (!strcmpic(http->ver, "HTTP/1.1"))
1084 && (csp->action->flags & ACTION_DOWNGRADE))
1087 http->ver = strdup("HTTP/1.0");
1089 if (http->ver == NULL)
1091 log_error(LOG_LEVEL_FATAL, "Out of memory downgrading HTTP version");
1096 * Save a copy of the original request for logging
1098 http->ocmd = strdup(http->cmd);
1100 if (http->ocmd == NULL)
1102 log_error(LOG_LEVEL_FATAL, "Out of memory copying HTTP request line");
1106 * (Re)build the HTTP request for non-SSL requests.
1107 * If forwarding, use the whole URL, else, use only the path.
1113 http->cmd = strdup(http->gpc);
1114 string_append(&http->cmd, " ");
1116 if (fwd->forward_host)
1118 string_append(&http->cmd, http->url);
1122 string_append(&http->cmd, http->path);
1124 string_append(&http->cmd, " ");
1125 string_append(&http->cmd, http->ver);
1127 if (http->cmd == NULL)
1129 log_error(LOG_LEVEL_FATAL, "Out of memory writing HTTP command");
1131 log_error(LOG_LEVEL_HEADER, "New HTTP Request-Line: %s", http->cmd);
1133 enlist(csp->headers, http->cmd);
1137 * If the user has not supplied any wafers, and the user has not
1138 * told us to suppress the vanilla wafer, then send the vanilla wafer.
1140 if (list_is_empty(csp->action->multi[ACTION_MULTI_WAFER])
1141 && ((csp->action->flags & ACTION_VANILLA_WAFER) != 0))
1143 enlist(csp->action->multi[ACTION_MULTI_WAFER], VANILLA_WAFER);
1147 #ifdef FEATURE_KILL_POPUPS
1148 block_popups = ((csp->action->flags & ACTION_NO_POPUPS) != 0);
1149 #endif /* def FEATURE_KILL_POPUPS */
1151 pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */
1152 (!list_is_empty(csp->action->multi[ACTION_MULTI_FILTER]));
1154 gif_deanimate = ((csp->action->flags & ACTION_DEANIMATE) != 0);
1156 jpeg_inspect = ((csp->action->flags & ACTION_JPEG_INSPECT) != 0);
1158 /* grab the rest of the client's headers */
1162 if ( ( ( p = get_header(csp) ) != NULL) && ( *p == '\0' ) )
1164 len = read_socket(csp->cfd, buf, sizeof(buf));
1167 log_error(LOG_LEVEL_ERROR, "read from client failed: %E");
1172 * If there is no memory left for buffering the
1173 * request, there is nothing we can do but hang up
1175 if (add_to_iob(csp, buf, len))
1182 if (p == NULL) break;
1184 enlist(csp->headers, p);
1189 * We have a request. Now, check to see if we need to
1190 * intercept it, i.e. If ..
1194 /* We may not forward the request by rfc2616 sect 14.31 */
1195 (NULL != (rsp = direct_response(csp)))
1197 /* or a CGI call was detected and answered */
1198 || (NULL != (rsp = dispatch_cgi(csp)))
1200 /* or we are enabled and... */
1201 || (IS_ENABLED_AND (
1203 /* ..the request was blocked */
1204 ( NULL != (rsp = block_url(csp)))
1206 /* ..or untrusted */
1207 #ifdef FEATURE_TRUST
1208 || ( NULL != (rsp = trust_url(csp)))
1209 #endif /* def FEATURE_TRUST */
1211 /* ..or a fast redirect kicked in */
1212 #ifdef FEATURE_FAST_REDIRECTS
1213 || (((csp->action->flags & ACTION_FAST_REDIRECTS) != 0) &&
1214 (NULL != (rsp = redirect_url(csp))))
1215 #endif /* def FEATURE_FAST_REDIRECTS */
1219 /* Write the answer to the client */
1220 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1221 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1223 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1226 #ifdef FEATURE_STATISTICS
1227 /* Count as a rejected request */
1228 csp->flags |= CSP_FLAG_REJECTED;
1229 #endif /* def FEATURE_STATISTICS */
1231 /* Log (FIXME: All intercept reasons appear as "crunch" with Status 200) */
1232 log_error(LOG_LEVEL_GPC, "%s%s crunch!", http->hostport, http->path);
1233 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 3", csp->ip_addr_str, http->ocmd);
1235 /* Clean up and return */
1236 free_http_response(rsp);
1240 hdr = sed(client_patterns, add_client_headers, csp);
1243 /* FIXME Should handle error properly */
1244 log_error(LOG_LEVEL_FATAL, "Out of memory parsing client header");
1247 list_remove_all(csp->headers);
1249 log_error(LOG_LEVEL_GPC, "%s%s", http->hostport, http->path);
1251 if (fwd->forward_host)
1253 log_error(LOG_LEVEL_CONNECT, "via %s:%d to: %s",
1254 fwd->forward_host, fwd->forward_port, http->hostport);
1258 log_error(LOG_LEVEL_CONNECT, "to %s", http->hostport);
1261 /* here we connect to the server, gateway, or the forwarder */
1263 while ( (csp->sfd = forwarded_connect(fwd, http, csp))
1264 && (errno == EINVAL) && (socks_retries++ < 3))
1266 log_error(LOG_LEVEL_ERROR, "failed request #%u to connect to %s. Trying again.",
1267 socks_retries, http->hostport);
1270 if (csp->sfd == JB_INVALID_SOCKET)
1272 log_error(LOG_LEVEL_CONNECT, "connect to: %s failed: %E",
1275 if (errno == EINVAL)
1277 rsp = error_response(csp, "no-such-domain", errno);
1279 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 404 0",
1280 csp->ip_addr_str, http->ocmd);
1284 rsp = error_response(csp, "connect-failed", errno);
1286 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
1287 csp->ip_addr_str, http->ocmd);
1291 /* Write the answer to the client */
1294 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1295 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1297 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1301 free_http_response(rsp);
1306 log_error(LOG_LEVEL_CONNECT, "OK");
1308 if (fwd->forward_host || (http->ssl == 0))
1310 /* write the client's (modified) header to the server
1311 * (along with anything else that may be in the buffer)
1314 if (write_socket(csp->sfd, hdr, strlen(hdr))
1315 || (flush_socket(csp->sfd, csp) < 0))
1317 log_error(LOG_LEVEL_CONNECT, "write header to: %s failed: %E",
1320 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
1321 csp->ip_addr_str, http->ocmd);
1323 rsp = error_response(csp, "connect-failed", errno);
1327 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1328 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1330 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1334 free_http_response(rsp);
1342 * We're running an SSL tunnel and we're not forwarding,
1343 * so just send the "connect succeeded" message to the
1344 * client, flush the rest, and get out of the way.
1346 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 2\n",
1347 csp->ip_addr_str, http->ocmd);
1349 if (write_socket(csp->cfd, CSUCCEED, sizeof(CSUCCEED)-1))
1357 /* we're finished with the client's header */
1360 maxfd = ( csp->cfd > csp->sfd ) ? csp->cfd : csp->sfd;
1362 /* pass data between the client and server
1363 * until one or the other shuts down the connection.
1372 * FD_ZERO here seems to point to an errant macro which crashes.
1373 * So do this by hand for now...
1375 memset(&rfds,0x00,sizeof(fd_set));
1379 FD_SET(csp->cfd, &rfds);
1380 FD_SET(csp->sfd, &rfds);
1382 n = select((int)maxfd+1, &rfds, NULL, NULL, NULL);
1386 log_error(LOG_LEVEL_ERROR, "select() failed!: %E");
1390 /* this is the body of the browser's request
1391 * just read it and write it.
1394 if (FD_ISSET(csp->cfd, &rfds))
1396 len = read_socket(csp->cfd, buf, sizeof(buf));
1400 break; /* "game over, man" */
1403 if (write_socket(csp->sfd, buf, (size_t)len))
1405 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1412 * The server wants to talk. It could be the header or the body.
1413 * If `hdr' is null, then it's the header otherwise it's the body.
1414 * FIXME: Does `hdr' really mean `host'? No.
1418 if (FD_ISSET(csp->sfd, &rfds))
1421 len = read_socket(csp->sfd, buf, sizeof(buf) - 1);
1425 log_error(LOG_LEVEL_ERROR, "read from: %s failed: %E", http->host);
1427 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
1428 csp->ip_addr_str, http->ocmd);
1430 rsp = error_response(csp, "connect-failed", errno);
1434 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1435 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1437 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1441 free_http_response(rsp);
1445 /* Add a trailing zero. This lets filter_popups
1446 * use string operations.
1450 #ifdef FEATURE_KILL_POPUPS
1451 /* Filter the popups on this read. */
1452 if (block_popups_now)
1454 filter_popups(buf, csp);
1456 #endif /* def FEATURE_KILL_POPUPS */
1458 /* Normally, this would indicate that we've read
1459 * as much as the server has sent us and we can
1460 * close the client connection. However, Microsoft
1461 * in its wisdom has released IIS/5 with a bug that
1462 * prevents it from sending the trailing \r\n in
1463 * a 302 redirect header (and possibly other headers).
1464 * To work around this if we've haven't parsed
1465 * a full header we'll append a trailing \r\n
1466 * and see if this now generates a valid one.
1468 * This hack shouldn't have any impacts. If we've
1469 * already transmitted the header or if this is a
1470 * SSL connection, then we won't bother with this
1471 * hack. So we only work on partially received
1472 * headers. If we append a \r\n and this still
1473 * doesn't generate a valid header, then we won't
1474 * transmit anything to the client.
1479 if (server_body || http->ssl)
1482 * If we have been buffering up the document,
1483 * now is the time to apply content modification
1484 * and send the result to the client.
1489 * If the content filter fails, use the original
1490 * buffer and length.
1491 * (see p != NULL ? p : csp->iob->cur below)
1493 if (NULL == (p = (*content_filter)(csp)))
1495 csp->content_length = csp->iob->eod - csp->iob->cur;
1498 hdr = sed(server_patterns_light, NULL, csp);
1502 /* FIXME Should handle error properly */
1503 log_error(LOG_LEVEL_FATAL, "Out of memory parsing server header");
1506 if (write_socket(csp->cfd, hdr, strlen(hdr))
1507 || write_socket(csp->cfd, p != NULL ? p : csp->iob->cur, csp->content_length))
1509 log_error(LOG_LEVEL_ERROR, "write modified content to client failed: %E");
1519 break; /* "game over, man" */
1523 * This is NOT the body, so
1524 * Let's pretend the server just sent us a blank line.
1526 len = sprintf(buf, "\r\n");
1529 * Now, let the normal header parsing algorithm below do its
1530 * job. If it fails, we'll exit instead of continuing.
1537 * If this is an SSL connection or we're in the body
1538 * of the server document, just write it to the client,
1539 * unless we need to buffer the body for later content-filtering
1542 if (server_body || http->ssl)
1547 * If there is no memory left for buffering the content, or the buffer limit
1548 * has been reached, switch to non-filtering mode, i.e. make & write the
1549 * header, flush the iob and buf, and get out of the way.
1551 if (add_to_iob(csp, buf, len))
1556 log_error(LOG_LEVEL_ERROR, "Flushing header and buffers. Stepping back from filtering.");
1558 hdr = sed(server_patterns, add_server_headers, csp);
1562 * Memory is too tight to even generate the header.
1563 * Send our static "Out-of-memory" page.
1565 log_error(LOG_LEVEL_ERROR, "Out of memory while trying to flush.");
1566 rsp = cgi_error_memory();
1568 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1569 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1571 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1576 hdrlen = strlen(hdr);
1578 if (write_socket(csp->cfd, hdr, hdrlen)
1579 || ((flushed = flush_socket(csp->cfd, csp)) < 0)
1580 || (write_socket(csp->cfd, buf, (size_t) len)))
1582 log_error(LOG_LEVEL_CONNECT, "Flush header and buffers to client failed: %E");
1588 byte_count += hdrlen + flushed + len;
1590 content_filter = NULL;
1597 if (write_socket(csp->cfd, buf, (size_t)len))
1599 log_error(LOG_LEVEL_ERROR, "write to client failed: %E");
1608 /* we're still looking for the end of the
1609 * server's header ... (does that make header
1610 * parsing an "out of body experience" ?
1614 * buffer up the data we just read. If that fails,
1615 * there's little we can do but send our static
1616 * out-of-memory page.
1618 if (add_to_iob(csp, buf, len))
1620 log_error(LOG_LEVEL_ERROR, "Out of memory while looking for end of server headers.");
1621 rsp = cgi_error_memory();
1623 if (write_socket(csp->cfd, rsp->head, rsp->head_length)
1624 || write_socket(csp->cfd, rsp->body, rsp->content_length))
1626 log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
1631 /* get header lines from the iob */
1633 while ((p = get_header(csp)) != NULL)
1637 /* see following note */
1640 enlist(csp->headers, p);
1644 /* NOTE: there are no "empty" headers so
1645 * if the pointer `p' is not NULL we must
1646 * assume that we reached the end of the
1647 * buffer before we hit the end of the header.
1654 /* Well, we tried our MS IIS/5
1655 * hack and it didn't work.
1656 * The header is incomplete
1657 * and there isn't anything
1658 * we can do about it.
1664 /* Since we have to wait for
1665 * more from the server before
1666 * we can parse the headers
1667 * we just continue here.
1673 /* we have now received the entire header.
1674 * filter it and send the result to the client
1677 hdr = sed(server_patterns, add_server_headers, csp);
1680 /* FIXME Should handle error properly */
1681 log_error(LOG_LEVEL_FATAL, "Out of memory parsing server header");
1684 #ifdef FEATURE_KILL_POPUPS
1685 /* Start blocking popups if appropriate. */
1687 if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
1688 !http->ssl && /* We talk plaintext */
1689 block_popups) /* Policy allows */
1691 block_popups_now = 1;
1693 * Filter the part of the body that came in the same read
1694 * as the last headers:
1696 filter_popups(csp->iob->cur, csp);
1699 #endif /* def FEATURE_KILL_POPUPS */
1701 /* Buffer and pcrs filter this if appropriate. */
1703 if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
1704 !http->ssl && /* We talk plaintext */
1705 pcrs_filter) /* Policy allows */
1707 content_filter = pcrs_filter_response;
1710 /* Buffer and gif_deanimate this if appropriate. */
1712 if ((csp->content_type & CT_GIF) && /* It's an image/gif MIME-Type */
1713 !http->ssl && /* We talk plaintext */
1714 gif_deanimate) /* Policy allows */
1716 content_filter = gif_deanimate_response;
1719 /* Buffer and jpg_inspect this if appropriate. */
1721 if ((csp->content_type & CT_JPEG) && /* It's an image/jpeg MIME-Type */
1722 !http->ssl && /* We talk plaintext */
1723 jpeg_inspect) /* Policy allows */
1725 content_filter = jpeg_inspect_response;
1729 * Only write if we're not buffering for content modification
1731 if (!content_filter)
1733 /* write the server's (modified) header to
1734 * the client (along with anything else that
1735 * may be in the buffer)
1738 if (write_socket(csp->cfd, hdr, strlen(hdr))
1739 || ((len = flush_socket(csp->cfd, csp)) < 0))
1741 log_error(LOG_LEVEL_CONNECT, "write header to client failed: %E");
1743 /* the write failed, so don't bother
1744 * mentioning it to the client...
1745 * it probably can't hear us anyway.
1754 /* we're finished with the server's header */
1759 /* If this was a MS IIS/5 hack then it means
1760 * the server has already closed the
1761 * connection. Nothing more to read. Time
1772 return; /* huh? we should never get here */
1775 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 %d",
1776 csp->ip_addr_str, http->ocmd, byte_count);
1780 /*********************************************************************
1784 * Description : This is little more than chat. We only "serve" to
1785 * to close any socket that chat may have opened.
1788 * 1 : csp = Current client state (buffers, headers, etc...)
1792 *********************************************************************/
1794 void serve(struct client_state *csp)
1795 #else /* ifndef AMIGA */
1796 static void serve(struct client_state *csp)
1797 #endif /* def AMIGA */
1800 close_socket(csp->cfd);
1802 if (csp->sfd != JB_INVALID_SOCKET)
1804 close_socket(csp->sfd);
1807 csp->flags &= ~CSP_FLAG_ACTIVE;
1813 /*********************************************************************
1815 * Function : server_thread
1817 * Description : We only exist to call `serve' in a threaded environment.
1820 * 1 : data = Current client state (buffers, headers, etc...)
1822 * Returns : Always 0.
1824 *********************************************************************/
1825 static int32 server_thread(void *data)
1827 serve((struct client_state *) data);
1834 /*********************************************************************
1838 * Description : Print usage info & exit.
1840 * Parameters : Pointer to argv[0] for identifying ourselves
1844 *********************************************************************/
1845 void usage(const char *myname)
1847 printf("Privoxy version " VERSION " (" HOME_PAGE_URL ")\n"
1849 "Usage: %s [--help] [--version] [configfile]\n"
1851 "Usage: %s [--help] [--version] [--no-daemon] [--pidfile pidfile] [--user user[.group]] [configfile]\n"
1853 "Aborting.\n", myname);
1860 /*********************************************************************
1864 * Description : Load the config file and start the listen loop.
1865 * This function is a lot more *sane* with the `load_config'
1866 * and `listen_loop' functions; although it stills does
1867 * a *little* too much for my taste.
1870 * 1 : argc = Number of parameters (including $0).
1871 * 2 : argv = Array of (char *)'s to the parameters.
1873 * Returns : 1 if : can't open config file, unrecognized directive,
1874 * stats requested in multi-thread mode, can't open the
1875 * log file, can't open the jar file, listen port is invalid,
1876 * any load fails, and can't bind port.
1878 * Else main never returns, the process must be signaled
1879 * to terminate execution. Or, on Windows, use the
1880 * "File", "Exit" menu option.
1882 *********************************************************************/
1884 int real_main(int argc, const char *argv[])
1886 int main(int argc, const char *argv[])
1891 struct passwd *pw = NULL;
1892 struct group *grp = NULL;
1901 #if !defined(_WIN32)
1909 * Parse the command line arguments
1911 while (++argc_pos < argc)
1914 /* Check to see if the service must be installed or uninstalled */
1915 if (strncmp(argv[argc_pos], "--install", 9) == 0)
1917 const char *pName = argv[argc_pos] + 9;
1920 exit( (install_service(pName)) ? 0 : 1 );
1922 else if (strncmp(argv[argc_pos], "--uninstall", + 11) == 0)
1924 const char *pName = argv[argc_pos] + 11;
1927 exit((uninstall_service(pName)) ? 0 : 1);
1929 else if (strcmp(argv[argc_pos], "--service" ) == 0)
1931 bRunAsService = TRUE;
1932 w32_set_service_cwd();
1933 atexit(w32_service_exit_notify);
1936 #endif /* defined(_WIN32) */
1939 #if !defined(_WIN32) || defined(_WIN_CONSOLE)
1941 if (strcmp(argv[argc_pos], "--help") == 0)
1946 else if(strcmp(argv[argc_pos], "--version") == 0)
1948 printf("Privoxy version " VERSION " (" HOME_PAGE_URL ")\n");
1954 else if (strcmp(argv[argc_pos], "--no-daemon" ) == 0)
1959 else if (strcmp(argv[argc_pos], "--pidfile" ) == 0)
1961 if (++argc_pos == argc) usage(argv[0]);
1962 pidfile = strdup(argv[argc_pos]);
1965 else if (strcmp(argv[argc_pos], "--user" ) == 0)
1967 if (++argc_pos == argc) usage(argv[argc_pos]);
1969 if ((NULL != (p = strchr(argv[argc_pos], '.'))) && *(p + 1) != '0')
1972 if (NULL == (grp = getgrnam(p)))
1974 log_error(LOG_LEVEL_FATAL, "Group %s not found.", p);
1978 if (NULL == (pw = getpwnam(argv[argc_pos])))
1980 log_error(LOG_LEVEL_FATAL, "User %s not found.", argv[argc_pos]);
1983 if (p != NULL) *--p = '\0';
1986 else if (strcmp(argv[argc_pos], "--chroot" ) == 0)
1991 #endif /* defined(unix) */
1992 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
1994 configfile = argv[argc_pos];
1997 } /* -END- while (more arguments) */
2000 if ( *configfile != '/' )
2002 char *abs_file, cwd[1024];
2004 /* make config-filename absolute here */
2005 if ( !(getcwd(cwd, sizeof(cwd))))
2007 perror("get working dir failed");
2011 if (!(basedir = strdup(cwd))
2012 || (!(abs_file = malloc( strlen( basedir ) + strlen( configfile ) + 5 ))))
2014 perror("malloc failed");
2017 strcpy( abs_file, basedir );
2018 strcat( abs_file, "/" );
2019 strcat( abs_file, configfile );
2020 configfile = abs_file;
2022 #endif /* defined unix */
2026 clients->next = NULL;
2030 #elif defined(_WIN32)
2034 #if defined(OSX_DARWIN) || defined(__OpenBSD__)
2036 * Prepare global mutex semaphores
2039 pthread_mutex_init(&gmtime_mutex,0);
2040 pthread_mutex_init(&localtime_mutex,0);
2041 #endif /* def OSX_DARWIN */
2042 pthread_mutex_init(&gethostbyaddr_mutex,0);
2043 pthread_mutex_init(&gethostbyname_mutex,0);
2044 #endif /* defined(OSX_DARWIN) || defined(__OpenBSD__) */
2046 #ifdef FEATURE_PTHREAD
2047 pthread_mutex_init(&log_mutex,0);
2048 pthread_mutex_init(&log_init_mutex,0);
2049 #endif /* FEATURE_PTHREAD */
2052 * Unix signal handling
2054 * Catch the abort, interrupt and terminate signals for a graceful exit
2055 * Catch the hangup signal so the errlog can be reopened.
2056 * Ignore the broken pipe signals (FIXME: Why?)
2058 #if !defined(_WIN32) && !defined(__OS2__) && !defined(AMIGA)
2061 const int catched_signals[] = { SIGABRT, SIGTERM, SIGINT, SIGHUP, 0 };
2062 const int ignored_signals[] = { SIGPIPE, 0 };
2064 for (idx = 0; catched_signals[idx] != 0; idx++)
2066 if (signal(catched_signals[idx], sig_handler) == SIG_ERR)
2068 log_error(LOG_LEVEL_FATAL, "Can't set signal-handler for signal %d: %E", catched_signals[idx]);
2072 for (idx = 0; ignored_signals[idx] != 0; idx++)
2074 if (signal(ignored_signals[idx], SIG_IGN) == SIG_ERR)
2076 log_error(LOG_LEVEL_FATAL, "Can't set ignore-handler for signal %d: %E", ignored_signals[idx]);
2081 #else /* ifdef _WIN32 */
2082 # ifdef _WIN_CONSOLE
2084 * We *are* in a windows console app.
2085 * Print a verbose messages about FAQ's and such
2087 printf(win32_blurb);
2088 # endif /* def _WIN_CONSOLE */
2089 #endif /* def _WIN32 */
2092 /* Initialize the CGI subsystem */
2093 cgi_init_error_messages();
2096 * If runnig on unix and without the --nodaemon
2097 * option, become a daemon. I.e. fork, detach
2098 * from tty and get process group leadership
2111 if ( pid < 0 ) /* error */
2116 else if ( pid != 0 ) /* parent */
2121 * must check for errors
2122 * child died due to missing files aso
2125 wpid = waitpid( pid, &status, WNOHANG );
2134 /* Should be more portable, but not as well tested */
2139 #else /* ndef __FreeBSD__ */
2141 #endif /* ndef __FreeBSD__ */
2142 fd = open("/dev/tty", O_RDONLY);
2145 /* no error check here */
2146 ioctl( fd, TIOCNOTTY,0 );
2150 /* FIXME: should close stderr (fd 2) here too, but the test
2152 * and load config file is done in listen_loop() and puts
2153 * some messages on stderr there.
2160 } /* -END- if (!no_daemon) */
2163 * As soon as we have written the PID file, we can switch
2164 * to the user and group ID indicated by the --user option
2170 if (setgid((NULL != grp) ? grp->gr_gid : pw->pw_gid))
2172 log_error(LOG_LEVEL_FATAL, "Cannot setgid(): Insufficient permissions.");
2178 log_error(LOG_LEVEL_FATAL, "Home directory for %s undefined", pw->pw_name);
2180 if (chroot(pw->pw_dir) < 0)
2182 log_error(LOG_LEVEL_FATAL, "Cannot chroot to %s", pw->pw_dir);
2186 log_error(LOG_LEVEL_FATAL, "Cannot chdir /");
2189 if (setuid(pw->pw_uid))
2191 log_error(LOG_LEVEL_FATAL, "Cannot setuid(): Insufficient permissions.");
2195 char putenv_dummy[64];
2197 strcpy(putenv_dummy, "HOME=/");
2198 if (putenv(putenv_dummy) != 0)
2200 log_error(LOG_LEVEL_FATAL, "Cannot putenv(): HOME");
2203 snprintf(putenv_dummy, 64, "USER=%s", pw->pw_name);
2204 if (putenv(putenv_dummy) != 0)
2206 log_error(LOG_LEVEL_FATAL, "Cannot putenv(): USER");
2212 log_error(LOG_LEVEL_FATAL, "Cannot chroot without --user argument.");
2215 #endif /* defined unix */
2218 /* This will be FALSE unless the command line specified --service
2222 /* Yup, so now we must attempt to establish a connection
2223 * with the service dispatcher. This will only work if this
2224 * process was launched by the service control manager to
2225 * actually run as a service. If this isn't the case, i've
2226 * known it take around 30 seconds or so for the call to return.
2229 /* The StartServiceCtrlDispatcher won't return until the service is stopping */
2230 if (w32_start_service_ctrl_dispatcher(w32ServiceDispatchTable))
2232 /* Service has run, and at this point is now being stopped, so just return */
2237 printf("Warning: Failed to connect to Service Control Dispatcher\nwhen starting as a service!\n");
2239 /* An error occurred. Usually it's because --service was wrongly specified
2240 * and we were unable to connect to the Service Control Dispatcher because
2241 * it wasn't expecting us and is therefore not listening.
2243 * For now, just continue below to call the listen_loop function.
2246 #endif /* def _WIN32 */
2256 /*********************************************************************
2258 * Function : bind_port_helper
2260 * Description : Bind the listen port. Handles logging, and aborts
2264 * 1 : config = Privoxy configuration. Specifies port
2267 * Returns : Port that was opened.
2269 *********************************************************************/
2270 static jb_socket bind_port_helper(struct configuration_spec * config)
2275 if ( (config->haddr != NULL)
2276 && (config->haddr[0] == '1')
2277 && (config->haddr[1] == '2')
2278 && (config->haddr[2] == '7')
2279 && (config->haddr[3] == '.') )
2281 log_error(LOG_LEVEL_INFO, "Listening on port %d for local connections only",
2284 else if (config->haddr == NULL)
2286 log_error(LOG_LEVEL_INFO, "Listening on port %d on all IP addresses",
2291 log_error(LOG_LEVEL_INFO, "Listening on port %d on IP address %s",
2292 config->hport, config->haddr);
2295 result = bind_port(config->haddr, config->hport, &bfd);
2302 log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: "
2303 "There may be another Privoxy or some other "
2304 "proxy running on port %d",
2305 (NULL != config->haddr) ? config->haddr : "INADDR_ANY",
2306 config->hport, config->hport);
2309 log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: "
2310 "The hostname is not resolvable",
2311 (NULL != config->haddr) ? config->haddr : "INADDR_ANY", config->hport);
2314 log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: because %E",
2315 (NULL != config->haddr) ? config->haddr : "INADDR_ANY", config->hport);
2318 /* shouldn't get here */
2319 return JB_INVALID_SOCKET;
2322 config->need_bind = 0;
2329 /* Without this simple workaround we get this compiler warning from _beginthread
2330 * warning C4028: formal parameter 1 different from declaration
2332 void w32_service_listen_loop(void *p)
2336 #endif /* def _WIN32 */
2339 /*********************************************************************
2341 * Function : listen_loop
2343 * Description : bind the listen port and enter a "FOREVER" listening loop.
2349 *********************************************************************/
2350 static void listen_loop(void)
2352 struct client_state *csp = NULL;
2354 struct configuration_spec * config;
2356 config = load_config();
2358 bfd = bind_port_helper(config);
2360 #ifdef FEATURE_GRACEFUL_TERMINATION
2361 while (!g_terminate)
2366 #if !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
2367 while (waitpid(-1, NULL, WNOHANG) > 0)
2369 /* zombie children */
2371 #endif /* !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */
2374 * Free data that was used by died threads
2380 * Re-open the errlog after HUP signal
2382 if (received_hup_signal)
2384 init_error_log(Argv[0], config->logfile, config->debug);
2385 received_hup_signal = 0;
2390 #ifdef FEATURE_COOKIE_JAR
2392 * Need a workaround here: we have to fclose() the jarfile, or we die because it's
2393 * already open. I think unload_configfile() is not being run, which should do
2394 * this work. Until that can get resolved, we'll use this workaround.
2398 if (csp->config->jar)
2400 fclose(csp->config->jar);
2401 csp->config->jar = NULL;
2403 #endif /* FEATURE_COOKIE_JAR */
2404 #endif /* __OS2__ */
2406 if ( NULL == (csp = (struct client_state *) zalloc(sizeof(*csp))) )
2408 log_error(LOG_LEVEL_FATAL, "malloc(%d) for csp failed: %E", sizeof(*csp));
2412 csp->flags |= CSP_FLAG_ACTIVE;
2413 csp->sfd = JB_INVALID_SOCKET;
2415 csp->config = config = load_config();
2417 if ( config->need_bind )
2420 * Since we were listening to the "old port", we will not see
2421 * a "listen" param change until the next IJB request. So, at
2422 * least 1 more request must be made for us to find the new
2423 * setting. I am simply closing the old socket and binding the
2426 * Which-ever is correct, we will serve 1 more page via the
2427 * old settings. This should probably be a "show-proxy-args"
2428 * request. This should not be a so common of an operation
2429 * that this will hurt people's feelings.
2434 bfd = bind_port_helper(config);
2437 log_error(LOG_LEVEL_CONNECT, "accept connection ... ");
2439 if (!accept_connection(csp, bfd))
2441 log_error(LOG_LEVEL_CONNECT, "accept failed: %E");
2454 log_error(LOG_LEVEL_CONNECT, "OK");
2457 #ifdef FEATURE_TOGGLE
2458 if (global_toggle_state)
2460 csp->flags |= CSP_FLAG_TOGGLED_ON;
2462 #endif /* def FEATURE_TOGGLE */
2464 if (run_loader(csp))
2466 log_error(LOG_LEVEL_FATAL, "a loader failed - must exit");
2467 /* Never get here - LOG_LEVEL_FATAL causes program exit */
2471 if (block_acl(NULL,csp))
2473 log_error(LOG_LEVEL_CONNECT, "Connection dropped due to ACL");
2474 close_socket(csp->cfd);
2478 #endif /* def FEATURE_ACL */
2480 /* add it to the list of clients */
2481 csp->next = clients->next;
2482 clients->next = csp;
2484 if (config->multi_threaded)
2488 /* this is a switch () statment in the C preprocessor - ugh */
2489 #undef SELECTED_ONE_OPTION
2491 /* Use Pthreads in preference to native code */
2492 #if defined(FEATURE_PTHREAD) && !defined(SELECTED_ONE_OPTION)
2493 #define SELECTED_ONE_OPTION
2495 pthread_t the_thread;
2496 pthread_attr_t attrs;
2498 pthread_attr_init(&attrs);
2499 pthread_attr_setdetachstate(&attrs, PTHREAD_CREATE_DETACHED);
2500 errno = pthread_create(&the_thread, &attrs,
2502 child_id = errno ? -1 : 0;
2503 pthread_attr_destroy(&attrs);
2507 #if defined(_WIN32) && !defined(_CYGWIN) && !defined(SELECTED_ONE_OPTION)
2508 #define SELECTED_ONE_OPTION
2509 child_id = _beginthread(
2510 (void (*)(void *))serve,
2515 #if defined(__OS2__) && !defined(SELECTED_ONE_OPTION)
2516 #define SELECTED_ONE_OPTION
2517 child_id = _beginthread(
2518 (void(* _Optlink)(void*))serve,
2524 #if defined(__BEOS__) && !defined(SELECTED_ONE_OPTION)
2525 #define SELECTED_ONE_OPTION
2527 thread_id tid = spawn_thread
2528 (server_thread, "server", B_NORMAL_PRIORITY, csp);
2530 if ((tid >= 0) && (resume_thread(tid) == B_OK))
2532 child_id = (int) tid;
2541 #if defined(AMIGA) && !defined(SELECTED_ONE_OPTION)
2542 #define SELECTED_ONE_OPTION
2543 csp->cfd = ReleaseSocket(csp->cfd, -1);
2545 if((child_id = (int)CreateNewProcTags(
2546 NP_Entry, (ULONG)server_thread,
2547 NP_Output, Output(),
2548 NP_CloseOutput, FALSE,
2549 NP_Name, (ULONG)"privoxy child",
2550 NP_StackSize, 200*1024,
2554 ((struct Task *)child_id)->tc_UserData = csp;
2555 Signal((struct Task *)child_id, SIGF_SINGLE);
2560 #if !defined(SELECTED_ONE_OPTION)
2563 /* This block is only needed when using fork().
2564 * When using threads, the server thread was
2565 * created and run by the call to _beginthread().
2567 if (child_id == 0) /* child */
2570 #ifdef FEATURE_TOGGLE
2571 int inherited_toggle_state = global_toggle_state;
2572 #endif /* def FEATURE_TOGGLE */
2577 * If we've been toggled or we've blocked the request, tell Mom
2580 #ifdef FEATURE_TOGGLE
2581 if (inherited_toggle_state != global_toggle_state)
2583 rc |= RC_FLAG_TOGGLED;
2585 #endif /* def FEATURE_TOGGLE */
2587 #ifdef FEATURE_STATISTICS
2588 if (csp->flags & CSP_FLAG_REJECTED)
2590 rc |= RC_FLAG_BLOCKED;
2592 #endif /* ndef FEATURE_STATISTICS */
2596 else if (child_id > 0) /* parent */
2598 /* in a fork()'d environment, the parent's
2599 * copy of the client socket and the CSP
2603 #if !defined(_WIN32) && !defined(__CYGWIN__)
2605 wait( &child_status );
2608 * Evaluate child's return code: If the child has
2609 * - been toggled, toggle ourselves
2610 * - blocked its request, bump up the stats counter
2613 #ifdef FEATURE_TOGGLE
2614 if (WIFEXITED(child_status) && (WEXITSTATUS(child_status) & RC_FLAG_TOGGLED))
2616 global_toggle_state = !global_toggle_state;
2618 #endif /* def FEATURE_TOGGLE */
2620 #ifdef FEATURE_STATISTICS
2622 if (WIFEXITED(child_status) && (WEXITSTATUS(child_status) & RC_FLAG_BLOCKED))
2626 #endif /* def FEATURE_STATISTICS */
2628 #endif /* !defined(_WIN32) && defined(__CYGWIN__) */
2629 close_socket(csp->cfd);
2630 csp->flags &= ~CSP_FLAG_ACTIVE;
2634 #undef SELECTED_ONE_OPTION
2635 /* end of cpp switch () */
2637 if (child_id < 0) /* failed */
2639 char buf[BUFFER_SIZE];
2641 log_error(LOG_LEVEL_ERROR, "can't fork: %E");
2643 sprintf(buf , "Privoxy: can't fork: errno = %d", errno);
2645 write_socket(csp->cfd, buf, strlen(buf));
2646 close_socket(csp->cfd);
2647 csp->flags &= ~CSP_FLAG_ACTIVE;
2658 /* NOTREACHED unless FEATURE_GRACEFUL_TERMINATION is defined */
2660 /* Clean up. Aim: free all memory (no leaks) */
2661 #ifdef FEATURE_GRACEFUL_TERMINATION
2663 log_error(LOG_LEVEL_ERROR, "Graceful termination requested");
2665 unload_current_config_file();
2666 unload_current_actions_file();
2667 unload_current_re_filterfile();
2668 #ifdef FEATURE_TRUST
2669 unload_current_trust_file();
2672 if (config->multi_threaded)
2679 } while ((clients->next != NULL) && (--i > 0));
2683 log_error(LOG_LEVEL_ERROR, "Graceful termination failed - still some live clients after 1 minute wait.");
2694 #ifdef FEATURE_COOKIE_JAR
2695 if (NULL != config->jar)
2697 fclose(config->jar);
2701 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
2702 /* Cleanup - remove taskbar icon etc. */
2707 #endif /* FEATURE_GRACEFUL_TERMINATION */