1 const char showargs_rcs[] = "$Id: showargs.c,v 1.13 2001/06/06 09:37:59 sarantis Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/showargs.c,v $
6 * Purpose : Contains various utility routines needed to
7 * generate the show-proxy-args page.
9 * Copyright : Written by and Copyright (C) 2001 the SourceForge
10 * IJBSWA team. http://ijbswa.sourceforge.net
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.
35 * $Log: showargs.c,v $
36 * Revision 1.13 2001/06/06 09:37:59 sarantis
37 * Fix misplaced comment start.
39 * Revision 1.12 2001/06/04 10:41:52 swa
40 * show version string of cgi.h and cgi.c
42 * Revision 1.11 2001/06/03 11:03:48 oes
49 * adapted to new enlist_unique arg format
53 * introduced confdir option
55 * filters.c filtrers.h
57 * extracted-CGI relevant stuff
65 * support for new cgi mechansim
69 * functions for new list type: "map"
70 * extended enlist_unique
77 * deleted const struct interceptors
85 * added struct http_response
86 * changes struct interceptors to struct cgi_dispatcher
87 * moved HTML stuff to cgi.h
96 * Revision 1.10 2001/05/31 21:36:07 jongfoster
97 * Added RCS for actions.[ch] and list.[ch]
99 * Revision 1.9 2001/05/29 23:11:38 oes
101 * - Moved strsav() from showargs to miscutil
103 * Revision 1.8 2001/05/29 09:50:24 jongfoster
104 * Unified blocklist/imagelist/permissionslist.
105 * File format is still under discussion, but the internal changes
108 * Also modified interceptor behaviour:
109 * - We now intercept all URLs beginning with one of the following
110 * prefixes (and *only* these prefixes):
112 * * http://ijbswa.sf.net/config/
113 * * http://ijbswa.sourceforge.net/config/
114 * - New interceptors "home page" - go to http://i.j.b/ to see it.
115 * - Internal changes so that intercepted and fast redirect pages
116 * are not replaced with an image.
117 * - Interceptors now have the option to send a binary page direct
118 * to the client. (i.e. ijb-send-banner uses this)
119 * - Implemented show-url-info interceptor. (Which is why I needed
120 * the above interceptors changes - a typical URL is
121 * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
122 * The previous mechanism would not have intercepted that, and
123 * if it had been intercepted then it then it would have replaced
126 * Revision 1.7 2001/05/26 00:28:36 jongfoster
127 * Automatic reloading of config file.
128 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
129 * Most of the global variables have been moved to a new
130 * struct configuration_spec, accessed through csp->config->globalname
131 * Most of the globals remaining are used by the Win32 GUI.
133 * Revision 1.6 2001/05/25 22:32:56 jongfoster
136 * Revision 1.5 2001/05/22 18:54:49 oes
138 * - Enabled filtering banners by size rather than URL
139 * by adding patterns that replace all standard banner
140 * sizes with the "Junkbuster" gif to the re_filterfile
142 * - Enabled filtering WebBugs by providing a pattern
143 * which kills all 1x1 images
145 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
146 * which is selected by the (nonstandard and therefore
147 * capital) letter 'U' in the option string.
148 * It causes the quantifiers to be ungreedy by default.
149 * Appending a ? turns back to greedy (!).
151 * - Added a new interceptor ijb-send-banner, which
152 * sends back the "Junkbuster" gif. Without imagelist or
153 * MSIE detection support, or if tinygif = 1, or the
154 * URL isn't recognized as an imageurl, a lame HTML
155 * explanation is sent instead.
157 * - Added new feature, which permits blocking remote
158 * script redirects and firing back a local redirect
160 * The feature is conditionally compiled, i.e. it
161 * can be disabled with --disable-fast-redirects,
162 * plus it must be activated by a "fast-redirects"
163 * line in the config file, has its own log level
164 * and of course wants to be displayed by show-proxy-args
165 * Note: Boy, all the #ifdefs in 1001 locations and
166 * all the fumbling with configure.in and acconfig.h
167 * were *way* more work than the feature itself :-(
169 * - Because a generic redirect template was needed for
170 * this, tinygif = 3 now uses the same.
172 * - Moved GIFs, and other static HTTP response templates
177 * - Removed some >400 CRs again (Jon, you really worked
180 * Revision 1.4 2001/05/20 16:44:47 jongfoster
181 * Removing last hardcoded JunkBusters.com URLs.
183 * Revision 1.3 2001/05/20 01:21:20 jongfoster
184 * Version 2.9.4 checkin.
185 * - Merged popupfile and cookiefile, and added control over PCRS
186 * filtering, in new "permissionsfile".
187 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
188 * file error you now get a message box (in the Win32 GUI) rather
189 * than the program exiting with no explanation.
190 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
192 * - Removed tabs from "config"
193 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
194 * - Bumped up version number.
196 * Revision 1.2 2001/05/17 23:01:01 oes
197 * - Cleaned CRLF's from the sources and related files
199 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
200 * Initial import of version 2.9.3 source tree
203 *********************************************************************/
209 #include <sys/types.h>
215 #include "showargs.h"
220 #include "miscutil.h"
223 const char showargs_h_rcs[] = SHOWARGS_H_VERSION;
226 /*********************************************************************
230 * Description : Called from `load_config'. It saves each non-empty
231 * and non-comment line from config into a list. This
232 * list is used to create the show-proxy-args page.
235 * 1 : c = config setting that was found
236 * 2 : o = the setting's argument (if any)
240 *********************************************************************/
241 void savearg(char *c, char *o, struct configuration_spec * config)
247 if ( ( NULL != c ) && ( '\0' != *c ) )
249 if ((c = html_encode(c)))
251 sprintf(buf, "<a href=\"" REDIRECT_URL "option#%s\">%s</a> ", c, c);
255 if ( ( NULL != o ) && ( '\0' != *o ) )
257 if ((o = html_encode(o)))
259 if (strncmpic(o, "http://", 7) == 0)
261 strcat(buf, "<a href=\"");
275 strcat(buf, "<br>\n");
277 config->proxy_args_invocation = strsav(config->proxy_args_invocation, buf);
282 /*********************************************************************
284 * Function : init_proxy_args
286 * Description : Create the "top" of the show-proxy-args page.
289 * 1 : argc = argument count (same as in main)
290 * 2 : argv[] = program arguments (same as in main)
294 *********************************************************************/
295 void init_proxy_args(int argc, const char *argv[], struct configuration_spec * config)
300 freez(config->proxy_args_header);
303 for (i=0; i < argc; i++)
305 b = strsav(b, argv[i]);
308 config->proxy_args_header = b;
312 /*********************************************************************
314 * Function : end_proxy_args
316 * Description : Create the "bottom" of the show-proxy-args page.
320 * Returns : string with that bottom
322 *********************************************************************/
323 char *end_proxy_args(struct configuration_spec * config)
328 /* Instead of including *all* dot h's in the project (thus creating a
329 * tremendous amount of dependencies), I will concede to declaring them
330 * as extern's. This forces the developer to add to this list, but oh well.
333 #ifndef SPLIT_PROXY_ARGS
334 if (suppress_blocklists && suppress_message!=NULL)
336 b = strsav(b, "<h2>File contents</h2>\n");
337 b = strsav(b, suppress_message);
340 #endif /* ndef SPLIT_PROXY_ARGS */
342 b = strsav(b, "<h2>Source versions:</h2>\n");
343 b = strsav(b, "<pre>");
345 #define SHOW_RCS(__x) \
347 extern const char __x[]; \
348 sprintf(buf, "%s\n", __x); \
349 b = strsav(b, buf); \
352 /* In alphabetical order */
353 SHOW_RCS(actions_h_rcs)
354 SHOW_RCS(actions_rcs)
358 SHOW_RCS(cygwin_h_rcs)
360 SHOW_RCS(encode_h_rcs)
362 SHOW_RCS(errlog_h_rcs)
364 SHOW_RCS(filters_h_rcs)
365 SHOW_RCS(filters_rcs)
366 SHOW_RCS(gateway_h_rcs)
367 SHOW_RCS(gateway_rcs)
369 SHOW_RCS(gnu_regex_h_rcs)
370 SHOW_RCS(gnu_regex_rcs)
371 #endif /* def GNU_REGEX */
372 SHOW_RCS(jbsockets_h_rcs)
373 SHOW_RCS(jbsockets_rcs)
377 SHOW_RCS(killpopup_h_rcs)
378 SHOW_RCS(killpopup_rcs)
379 #endif /* def KILLPOPUPS */
382 SHOW_RCS(loadcfg_h_rcs)
383 SHOW_RCS(loadcfg_rcs)
384 SHOW_RCS(loaders_h_rcs)
385 SHOW_RCS(loaders_rcs)
386 SHOW_RCS(miscutil_h_rcs)
387 SHOW_RCS(miscutil_rcs)
388 SHOW_RCS(parsers_h_rcs)
389 SHOW_RCS(parsers_rcs)
393 #endif /* def PCRS */
394 SHOW_RCS(project_h_rcs)
395 SHOW_RCS(showargs_h_rcs)
396 SHOW_RCS(showargs_rcs)
397 SHOW_RCS(ssplit_h_rcs)
401 SHOW_RCS(w32log_h_rcs)
403 SHOW_RCS(w32res_h_rcs)
404 SHOW_RCS(w32rulesdlg_h_rcs)
405 SHOW_RCS(w32rulesdlg_rcs)
406 SHOW_RCS(w32taskbar_h_rcs)
407 SHOW_RCS(w32taskbar_rcs)
408 #endif /* ndef _WIN_CONSOLE */
409 SHOW_RCS(win32_h_rcs)
411 #endif /* def _WIN32 */
415 b = strsav(b, "</pre>\n");
417 b = strsav(b, "<h2>Conditional defines:</h2>\n<ul>");
420 b = strsav(b, " <li><code>#define <b>REGEX</b></code> - Support for regular expressions in the path specs.</li>\n");
421 #else /* ifndef REGEX */
422 b = strsav(b, " <li><code>#undef <b>REGEX</b></code> - No support for regular expressions in the path specs.</li>\n");
423 #endif /* ndef REGEX */
426 b = strsav(b, " <li><code>#define <b>PCRE</b></code> - Use PCRE rather than old GNU regex library.</li>\n");
427 #else /* ifndef PCRE */
428 b = strsav(b, " <li><code>#undef <b>PCRE</b></code> - Use old GNU regex library rather than PCRE.</li>\n");
429 #endif /* ndef PCRE */
432 b = strsav(b, " <li><code>#define <b>PCRS</b></code> - Enables arbitrary content modification regexps.</li>\n");
433 #else /* ifndef PCRS */
434 b = strsav(b, " <li><code>#undef <b>PCRS</b></code> - Disables arbitrary content modification regexps.</li>\n");
435 #endif /* ndef PCRS */
438 b = strsav(b, " <li><code>#define <b>TOGGLE</b></code> - Allow JunkBuster to be \"disabled\" so it is just a normal non-blocking non-anonymizing proxy.</li>\n");
439 #else /* ifndef TOGGLE */
440 b = strsav(b, " <li><code>#undef <b>TOGGLE</b></code> - Do not allow JunkBuster to be \"disabled\" so it is just a normal non-blocking non-anonymizing proxy.</li>\n");
441 #endif /* ndef TOGGLE */
444 b = strsav(b, " <li><code>#define <b>FORCE_LOAD</b></code> - Enables bypassing filtering for a single page using the prefix \"" FORCE_PREFIX "\".</li>\n");
445 #else /* ifndef FORCE_LOAD */
446 b = strsav(b, " <li><code>#undef <b>FORCE_LOAD</b></code> - Disables bypassing filtering for a single page.</li>\n");
447 #endif /* ndef FORCE_LOAD */
450 b = strsav(b, " <li><code>#define <b>DENY_GZIP</b></code> - Prevents requests from being compressed - required for PCRS.</li>\n");
451 #else /* ifndef DENY_GZIP */
452 b = strsav(b, " <li><code>#undef <b>DENY_GZIP</b></code> - Allows requests to be compressed if the browser and server support it.</li>\n");
453 #endif /* ndef DENY_GZIP */
456 b = strsav(b, " <li><code>#define <b>STATISTICS</b></code> - Enables statistics function.</li>\n");
457 #else /* ifndef STATISTICS */
458 b = strsav(b, " <li><code>#undef <b>STATISTICS</b></code> - Disables statistics function.</li>\n");
459 #endif /* ndef STATISTICS */
461 #ifdef SPLIT_PROXY_ARGS
462 b = strsav(b, " <li><code>#define <b>SPLIT_PROXY_ARGS</b></code> - Split this page up by placing the configuration files on separate pages.</li>\n");
463 #else /* ifndef SPLIT_PROXY_ARGS */
464 b = strsav(b, " <li><code>#undef <b>SPLIT_PROXY_ARGS</b></code> - This page contains the text of the configuration files, they are not split onto separate pages.</li>\n");
465 #endif /* ndef SPLIT_PROXY_ARGS */
468 b = strsav(b, " <li><code>#define <b>KILLPOPUPS</b></code> - Enables killing JavaScript popups.</li>\n");
469 #else /* ifndef KILLPOPUPS */
470 b = strsav(b, " <li><code>#undef <b>KILLPOPUPS</b></code> - Disables killing JavaScript popups.</li>\n");
471 #endif /* ndef KILLPOPUPS */
474 b = strsav(b, " <li><code>#define <b>WEBDAV</b></code> - Enables support for webDAV - e.g. stops Microsoft Outlook from accessing HotMail e-mail.</li>\n");
475 #else /* ifndef WEBDAV */
476 b = strsav(b, " <li><code>#undef <b>WEBDAV</b></code> - Disables support for webDAV - e.g. so Microsoft Outlook can access HotMail e-mail.</li>\n");
477 #endif /* ndef WEBDAV */
479 #ifdef DETECT_MSIE_IMAGES
480 b = strsav(b, " <li><code>#define <b>DETECT_MSIE_IMAGES</b></code> - Enables detecting image requests automatically for MSIE.</li>\n");
481 #else /* ifndef DETECT_MSIE_IMAGES */
482 b = strsav(b, " <li><code>#undef <b>DETECT_MSIE_IMAGES</b></code> - Disables detecting image requests automatically for MSIE.</li>\n");
483 #endif /* ndef DETECT_MSIE_IMAGES */
485 #ifdef IMAGE_BLOCKING
486 b = strsav(b, " <li><code>#define <b>IMAGE_BLOCKING</b></code> - Enables sending \"blocked\" images instead of HTML.</li>\n");
487 #else /* ifndef IMAGE_BLOCKING */
488 b = strsav(b, " <li><code>#undef <b>IMAGE_BLOCKING</b></code> - Disables sending \"blocked\" images instead of HTML.</li>\n");
489 #endif /* ndef IMAGE_BLOCKING */
492 b = strsav(b, " <li><code>#define <b>ACL_FILES</b></code> - Enables the use of ACL files to control access to the proxy by IP address.</li>\n");
493 #else /* ifndef ACL_FILES */
494 b = strsav(b, " <li><code>#undef <b>ACL_FILES</b></code> - Disables the use of ACL files to control access to the proxy by IP address.</li>\n");
495 #endif /* ndef ACL_FILES */
498 b = strsav(b, " <li><code>#define <b>TRUST_FILES</b></code> - Enables the use of trust files.</li>\n");
499 #else /* ifndef TRUST_FILES */
500 b = strsav(b, " <li><code>#undef <b>TRUST_FILES</b></code> - Disables the use of trust files.</li>\n");
501 #endif /* ndef TRUST_FILES */
504 b = strsav(b, " <li><code>#define <b>JAR_FILES</b></code> - Enables the use of jar files to capture cookies.</li>\n");
505 #else /* ifndef JAR_FILES */
506 b = strsav(b, " <li><code>#undef <b>JAR_FILES</b></code> - Disables the use of jar files to capture cookies.</li>\n");
507 #endif /* ndef JAR_FILES */
509 #ifdef FAST_REDIRECTS
510 b = strsav(b, " <li><code>#define <b>FAST_REDIRECTS</b></code> - Enables intercepting remote script redirects.</li>\n");
511 #else /* ifndef FAST_REDIRECTS */
512 b = strsav(b, " <li><code>#undef <b>FAST_REDIRECTS</b></code> - Disables intercepting remote script redirects.</li>\n");
513 #endif /* ndef FAST_REDIRECTS */
515 b = strsav(b, "</ul>\n<br>\n");
517 config->proxy_args_trailer = b;