1 const char showargs_rcs[] = "$Id: showargs.c,v 1.6 2001/05/25 22:32:56 jongfoster 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 1.6 2001/05/25 22:32:56 jongfoster
39 * Revision 1.5 2001/05/22 18:54:49 oes
41 * - Enabled filtering banners by size rather than URL
42 * by adding patterns that replace all standard banner
43 * sizes with the "Junkbuster" gif to the re_filterfile
45 * - Enabled filtering WebBugs by providing a pattern
46 * which kills all 1x1 images
48 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
49 * which is selected by the (nonstandard and therefore
50 * capital) letter 'U' in the option string.
51 * It causes the quantifiers to be ungreedy by default.
52 * Appending a ? turns back to greedy (!).
54 * - Added a new interceptor ijb-send-banner, which
55 * sends back the "Junkbuster" gif. Without imagelist or
56 * MSIE detection support, or if tinygif = 1, or the
57 * URL isn't recognized as an imageurl, a lame HTML
58 * explanation is sent instead.
60 * - Added new feature, which permits blocking remote
61 * script redirects and firing back a local redirect
63 * The feature is conditionally compiled, i.e. it
64 * can be disabled with --disable-fast-redirects,
65 * plus it must be activated by a "fast-redirects"
66 * line in the config file, has its own log level
67 * and of course wants to be displayed by show-proxy-args
68 * Note: Boy, all the #ifdefs in 1001 locations and
69 * all the fumbling with configure.in and acconfig.h
70 * were *way* more work than the feature itself :-(
72 * - Because a generic redirect template was needed for
73 * this, tinygif = 3 now uses the same.
75 * - Moved GIFs, and other static HTTP response templates
80 * - Removed some >400 CRs again (Jon, you really worked
83 * Revision 1.4 2001/05/20 16:44:47 jongfoster
84 * Removing last hardcoded JunkBusters.com URLs.
86 * Revision 1.3 2001/05/20 01:21:20 jongfoster
87 * Version 2.9.4 checkin.
88 * - Merged popupfile and cookiefile, and added control over PCRS
89 * filtering, in new "permissionsfile".
90 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
91 * file error you now get a message box (in the Win32 GUI) rather
92 * than the program exiting with no explanation.
93 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
95 * - Removed tabs from "config"
96 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
97 * - Bumped up version number.
99 * Revision 1.2 2001/05/17 23:01:01 oes
100 * - Cleaned CRLF's from the sources and related files
102 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
103 * Initial import of version 2.9.3 source tree
106 *********************************************************************/
112 #include <sys/types.h>
118 #include "showargs.h"
123 #include "miscutil.h"
126 const char showargs_h_rcs[] = SHOWARGS_H_VERSION;
128 /*********************************************************************
132 * Description : Reallocate "old" and append text to it. This makes
133 * it easier to append to malloc'd strings.
136 * 1 : old = Old text that is to be extended. Will be
137 * free()d by this routine.
138 * 2 : text_to_append = Text to be appended to old.
140 * Returns : Pointer to newly malloc'ed appended string.
141 * If there is no text to append, return old. Caller
144 *********************************************************************/
145 char *strsav(char *old, const char *text_to_append)
147 int old_len, new_len;
150 if (( text_to_append == NULL) || (*text_to_append == '\0'))
157 old_len = strlen(old);
164 new_len = old_len + strlen(text_to_append) + 1;
168 if ((p = realloc(old, new_len)) == NULL)
170 log_error(LOG_LEVEL_FATAL, "realloc(%d) bytes for proxy_args failed!", new_len);
171 /* Never get here - LOG_LEVEL_FATAL causes program exit */
176 if ((p = (char *)malloc(new_len)) == NULL)
178 log_error(LOG_LEVEL_FATAL, "malloc(%d) bytes for proxy_args failed!", new_len);
179 /* Never get here - LOG_LEVEL_FATAL causes program exit */
183 strcpy(p + old_len, text_to_append);
189 /*********************************************************************
193 * Description : Called from `load_config'. It saves each non-empty
194 * and non-comment line from config into a list. This
195 * list is used to create the show-proxy-args page.
198 * 1 : c = config setting that was found
199 * 2 : o = the setting's argument (if any)
203 *********************************************************************/
204 void savearg(char *c, char *o, struct configuration_spec * config)
210 if ( ( NULL != c ) && ( '\0' != *c ) )
212 if ((c = html_encode(c)))
214 sprintf(buf, "<a href=\"" REDIRECT_URL "option#%s\">%s</a> ", c, c);
218 if ( ( NULL != o ) && ( '\0' != *o ) )
220 if ((o = html_encode(o)))
222 if (strncmpic(o, "http://", 7) == 0)
224 strcat(buf, "<a href=\"");
238 strcat(buf, "<br>\n");
240 config->proxy_args->invocation = strsav(config->proxy_args->invocation, buf);
245 /*********************************************************************
247 * Function : init_proxy_args
249 * Description : Create the "top" of the show-proxy-args page.
252 * 1 : argc = argument count (same as in main)
253 * 2 : argv[] = program arguments (same as in main)
257 *********************************************************************/
258 void init_proxy_args(int argc, const char *argv[], struct configuration_spec * config)
260 const struct gateway *g;
264 freez(config->proxy_args->header);
265 freez(config->proxy_args->invocation);
266 freez(config->proxy_args->gateways);
267 freez(config->proxy_args->trailer);
273 "Server: IJ/" VERSION "\n"
274 "Content-type: text/html\n\n"
278 "<title>Internet Junkbuster Proxy Status</title>"
280 "<body bgcolor=\"#f8f8f0\" link=\"#000078\" alink=\"#ff0022\" vlink=\"#787878\">\n"
283 "<a href=\"" REDIRECT_URL "faq#show\">Proxy Status</a>\n"
285 "<h2>You are using the " BANNER " <sup><small><small>TM</small></small></sup></h2>\n"
286 "Version: " VERSION "\n"
287 "<br>Home page: <a href=\"" HOME_PAGE_URL "\">" HOME_PAGE_URL "</a>\n"
292 "<h2>The program was invoked as follows</h2>\n");
294 for (i=0; i < argc; i++)
296 b = strsav(b, argv[i]);
299 b = strsav(b, "<br>\n");
301 config->proxy_args->header = b;
303 config->proxy_args->invocation = strsav(
304 config->proxy_args->invocation,
306 "and the following options were set in the configuration file"
313 "<h2>It supports the following gateway protocols:</h2>\n");
315 for (g = gateways; g->name; g++)
317 b = strsav(b, g->name);
320 b = strsav(b, "<br>\n");
322 config->proxy_args->gateways = b;
326 /*********************************************************************
328 * Function : end_proxy_args
330 * Description : Create the "bottom" of the show-proxy-args page.
336 *********************************************************************/
337 void end_proxy_args(struct configuration_spec * config)
342 /* Instead of including *all* dot h's in the project (thus creating a
343 * tremendous amount of dependencies), I will concede to declaring them
344 * as extern's. This forces the developer to add to this list, but oh well.
347 #ifndef SPLIT_PROXY_ARGS
348 if (suppress_blocklists && suppress_message!=NULL)
350 b = strsav(b, "<h2>File contents</h2>\n");
351 b = strsav(b, suppress_message);
354 #endif /* ndef SPLIT_PROXY_ARGS */
356 b = strsav(b, "<h2>Source versions:</h2>\n");
357 b = strsav(b, "<pre>");
359 #define SHOW_RCS(__x) \
361 extern const char __x[]; \
362 sprintf(buf, "%s\n", __x); \
363 b = strsav(b, buf); \
366 /* In alphabetical order */
368 SHOW_RCS(cygwin_h_rcs)
370 SHOW_RCS(encode_h_rcs)
372 SHOW_RCS(errlog_h_rcs)
374 SHOW_RCS(filters_h_rcs)
375 SHOW_RCS(filters_rcs)
376 SHOW_RCS(gateway_h_rcs)
377 SHOW_RCS(gateway_rcs)
379 SHOW_RCS(gnu_regex_h_rcs)
380 SHOW_RCS(gnu_regex_rcs)
381 #endif /* def GNU_REGEX */
382 SHOW_RCS(jbsockets_h_rcs)
383 SHOW_RCS(jbsockets_rcs)
387 SHOW_RCS(killpopup_h_rcs)
388 SHOW_RCS(killpopup_rcs)
389 #endif /* def KILLPOPUPS */
390 SHOW_RCS(loadcfg_h_rcs)
391 SHOW_RCS(loadcfg_rcs)
392 SHOW_RCS(loaders_h_rcs)
393 SHOW_RCS(loaders_rcs)
394 SHOW_RCS(miscutil_h_rcs)
395 SHOW_RCS(miscutil_rcs)
396 SHOW_RCS(parsers_h_rcs)
397 SHOW_RCS(parsers_rcs)
401 #endif /* def PCRS */
402 SHOW_RCS(project_h_rcs)
403 SHOW_RCS(showargs_h_rcs)
404 SHOW_RCS(showargs_rcs)
405 SHOW_RCS(ssplit_h_rcs)
409 SHOW_RCS(w32log_h_rcs)
411 SHOW_RCS(w32res_h_rcs)
412 SHOW_RCS(w32rulesdlg_h_rcs)
413 SHOW_RCS(w32rulesdlg_rcs)
414 SHOW_RCS(w32taskbar_h_rcs)
415 SHOW_RCS(w32taskbar_rcs)
416 #endif /* ndef _WIN_CONSOLE */
417 SHOW_RCS(win32_h_rcs)
419 #endif /* def _WIN32 */
423 b = strsav(b, "</pre>\n");
425 b = strsav(b, "<h2>Conditional defines:</h2>\n<ul>");
428 b = strsav(b, " <li><code>#define <b>REGEX</b></code> - Support for regular expressions in the path specs.</li>\n");
429 #else /* ifndef REGEX */
430 b = strsav(b, " <li><code>#undef <b>REGEX</b></code> - No support for regular expressions in the path specs.</li>\n");
431 #endif /* ndef REGEX */
434 b = strsav(b, " <li><code>#define <b>PCRE</b></code> - Use PCRE rather than old GNU regex library.</li>\n");
435 #else /* ifndef PCRE */
436 b = strsav(b, " <li><code>#undef <b>PCRE</b></code> - Use old GNU regex library rather than PCRE.</li>\n");
437 #endif /* ndef PCRE */
440 b = strsav(b, " <li><code>#define <b>PCRS</b></code> - Enables arbitrary content modification regexps.</li>\n");
441 #else /* ifndef PCRS */
442 b = strsav(b, " <li><code>#undef <b>PCRS</b></code> - Disables arbitrary content modification regexps.</li>\n");
443 #endif /* ndef PCRS */
446 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");
447 #else /* ifndef TOGGLE */
448 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");
449 #endif /* ndef TOGGLE */
452 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");
453 #else /* ifndef FORCE_LOAD */
454 b = strsav(b, " <li><code>#undef <b>FORCE_LOAD</b></code> - Disables bypassing filtering for a single page.</li>\n");
455 #endif /* ndef FORCE_LOAD */
458 b = strsav(b, " <li><code>#define <b>DENY_GZIP</b></code> - Prevents requests from being compressed - required for PCRS.</li>\n");
459 #else /* ifndef DENY_GZIP */
460 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");
461 #endif /* ndef DENY_GZIP */
464 b = strsav(b, " <li><code>#define <b>STATISTICS</b></code> - Enables statistics function.</li>\n");
465 #else /* ifndef STATISTICS */
466 b = strsav(b, " <li><code>#undef <b>STATISTICS</b></code> - Disables statistics function.</li>\n");
467 #endif /* ndef STATISTICS */
469 #ifdef SPLIT_PROXY_ARGS
470 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");
471 #else /* ifndef SPLIT_PROXY_ARGS */
472 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");
473 #endif /* ndef SPLIT_PROXY_ARGS */
476 b = strsav(b, " <li><code>#define <b>KILLPOPUPS</b></code> - Enables killing JavaScript popups.</li>\n");
477 #else /* ifndef KILLPOPUPS */
478 b = strsav(b, " <li><code>#undef <b>KILLPOPUPS</b></code> - Disables killing JavaScript popups.</li>\n");
479 #endif /* ndef KILLPOPUPS */
482 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");
483 #else /* ifndef WEBDAV */
484 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");
485 #endif /* ndef WEBDAV */
487 #ifdef DETECT_MSIE_IMAGES
488 b = strsav(b, " <li><code>#define <b>DETECT_MSIE_IMAGES</b></code> - Enables detecting image requests automatically for MSIE.</li>\n");
489 #else /* ifndef DETECT_MSIE_IMAGES */
490 b = strsav(b, " <li><code>#undef <b>DETECT_MSIE_IMAGES</b></code> - Disables detecting image requests automatically for MSIE.</li>\n");
491 #endif /* ndef DETECT_MSIE_IMAGES */
493 #ifdef USE_IMAGE_LIST
494 b = strsav(b, " <li><code>#define <b>USE_IMAGE_LIST</b></code> - Enables using image list to detect images.</li>\n");
495 #else /* ifndef USE_IMAGE_LIST */
496 b = strsav(b, " <li><code>#undef <b>USE_IMAGE_LIST</b></code> - Disables using image list to detect images.</li>\n");
497 #endif /* ndef USE_IMAGE_LIST */
500 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");
501 #else /* ifndef ACL_FILES */
502 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");
503 #endif /* ndef ACL_FILES */
506 b = strsav(b, " <li><code>#define <b>TRUST_FILES</b></code> - Enables the use of trust files.</li>\n");
507 #else /* ifndef TRUST_FILES */
508 b = strsav(b, " <li><code>#undef <b>TRUST_FILES</b></code> - Disables the use of trust files.</li>\n");
509 #endif /* ndef TRUST_FILES */
512 b = strsav(b, " <li><code>#define <b>JAR_FILES</b></code> - Enables the use of jar files to capture cookies.</li>\n");
513 #else /* ifndef JAR_FILES */
514 b = strsav(b, " <li><code>#undef <b>JAR_FILES</b></code> - Disables the use of jar files to capture cookies.</li>\n");
515 #endif /* ndef JAR_FILES */
517 #ifdef FAST_REDIRECTS
518 b = strsav(b, " <li><code>#define <b>FAST_REDIRECTS</b></code> - Enables intercepting remote script redirects.</li>\n");
519 #else /* ifndef FAST_REDIRECTS */
520 b = strsav(b, " <li><code>#undef <b>FAST_REDIRECTS</b></code> - Disables intercepting remote script redirects.</li>\n");
521 #endif ndef /* FAST_REDIRECTS */
523 b = strsav(b, "</ul>\n<br>\n");
526 "<small><small><p>\n"
527 "The " BANNER " Proxy - \n"
528 "<a href=\"" HOME_PAGE_URL "\">" HOME_PAGE_URL "</a><p>\n"
529 "Copyright © 2001 <a href=\"" HOME_PAGE_URL "\">the SourceForge IJBSWA team</a><br>\n"
530 "Copyright © 1997 <a href=\"http://www.junkbusters.com/\">\n" "Junkbusters Corporation</a><br>\n"
531 "Copying and distribution permitted under the "
532 "<a href=\"http://www.gnu.org/copyleft/gpl.html\">GNU General Public License.</a>\n"
537 config->proxy_args->trailer = b;