1 const char showargs_rcs[] = "$Id: showargs.c,v 1.7 2001/05/26 00:28:36 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 1.7 2001/05/26 00:28:36 jongfoster
37 * Automatic reloading of config file.
38 * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32).
39 * Most of the global variables have been moved to a new
40 * struct configuration_spec, accessed through csp->config->globalname
41 * Most of the globals remaining are used by the Win32 GUI.
43 * Revision 1.6 2001/05/25 22:32:56 jongfoster
46 * Revision 1.5 2001/05/22 18:54:49 oes
48 * - Enabled filtering banners by size rather than URL
49 * by adding patterns that replace all standard banner
50 * sizes with the "Junkbuster" gif to the re_filterfile
52 * - Enabled filtering WebBugs by providing a pattern
53 * which kills all 1x1 images
55 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
56 * which is selected by the (nonstandard and therefore
57 * capital) letter 'U' in the option string.
58 * It causes the quantifiers to be ungreedy by default.
59 * Appending a ? turns back to greedy (!).
61 * - Added a new interceptor ijb-send-banner, which
62 * sends back the "Junkbuster" gif. Without imagelist or
63 * MSIE detection support, or if tinygif = 1, or the
64 * URL isn't recognized as an imageurl, a lame HTML
65 * explanation is sent instead.
67 * - Added new feature, which permits blocking remote
68 * script redirects and firing back a local redirect
70 * The feature is conditionally compiled, i.e. it
71 * can be disabled with --disable-fast-redirects,
72 * plus it must be activated by a "fast-redirects"
73 * line in the config file, has its own log level
74 * and of course wants to be displayed by show-proxy-args
75 * Note: Boy, all the #ifdefs in 1001 locations and
76 * all the fumbling with configure.in and acconfig.h
77 * were *way* more work than the feature itself :-(
79 * - Because a generic redirect template was needed for
80 * this, tinygif = 3 now uses the same.
82 * - Moved GIFs, and other static HTTP response templates
87 * - Removed some >400 CRs again (Jon, you really worked
90 * Revision 1.4 2001/05/20 16:44:47 jongfoster
91 * Removing last hardcoded JunkBusters.com URLs.
93 * Revision 1.3 2001/05/20 01:21:20 jongfoster
94 * Version 2.9.4 checkin.
95 * - Merged popupfile and cookiefile, and added control over PCRS
96 * filtering, in new "permissionsfile".
97 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
98 * file error you now get a message box (in the Win32 GUI) rather
99 * than the program exiting with no explanation.
100 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
102 * - Removed tabs from "config"
103 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
104 * - Bumped up version number.
106 * Revision 1.2 2001/05/17 23:01:01 oes
107 * - Cleaned CRLF's from the sources and related files
109 * Revision 1.1.1.1 2001/05/15 13:59:03 oes
110 * Initial import of version 2.9.3 source tree
113 *********************************************************************/
119 #include <sys/types.h>
125 #include "showargs.h"
130 #include "miscutil.h"
133 const char showargs_h_rcs[] = SHOWARGS_H_VERSION;
135 /*********************************************************************
139 * Description : Reallocate "old" and append text to it. This makes
140 * it easier to append to malloc'd strings.
143 * 1 : old = Old text that is to be extended. Will be
144 * free()d by this routine.
145 * 2 : text_to_append = Text to be appended to old.
147 * Returns : Pointer to newly malloc'ed appended string.
148 * If there is no text to append, return old. Caller
151 *********************************************************************/
152 char *strsav(char *old, const char *text_to_append)
154 int old_len, new_len;
157 if (( text_to_append == NULL) || (*text_to_append == '\0'))
164 old_len = strlen(old);
171 new_len = old_len + strlen(text_to_append) + 1;
175 if ((p = realloc(old, new_len)) == NULL)
177 log_error(LOG_LEVEL_FATAL, "realloc(%d) bytes for proxy_args failed!", new_len);
178 /* Never get here - LOG_LEVEL_FATAL causes program exit */
183 if ((p = (char *)malloc(new_len)) == NULL)
185 log_error(LOG_LEVEL_FATAL, "malloc(%d) bytes for proxy_args failed!", new_len);
186 /* Never get here - LOG_LEVEL_FATAL causes program exit */
190 strcpy(p + old_len, text_to_append);
196 /*********************************************************************
200 * Description : Called from `load_config'. It saves each non-empty
201 * and non-comment line from config into a list. This
202 * list is used to create the show-proxy-args page.
205 * 1 : c = config setting that was found
206 * 2 : o = the setting's argument (if any)
210 *********************************************************************/
211 void savearg(char *c, char *o, struct configuration_spec * config)
217 if ( ( NULL != c ) && ( '\0' != *c ) )
219 if ((c = html_encode(c)))
221 sprintf(buf, "<a href=\"" REDIRECT_URL "option#%s\">%s</a> ", c, c);
225 if ( ( NULL != o ) && ( '\0' != *o ) )
227 if ((o = html_encode(o)))
229 if (strncmpic(o, "http://", 7) == 0)
231 strcat(buf, "<a href=\"");
245 strcat(buf, "<br>\n");
247 config->proxy_args_invocation = strsav(config->proxy_args_invocation, buf);
252 /*********************************************************************
254 * Function : init_proxy_args
256 * Description : Create the "top" of the show-proxy-args page.
259 * 1 : argc = argument count (same as in main)
260 * 2 : argv[] = program arguments (same as in main)
264 *********************************************************************/
265 void init_proxy_args(int argc, const char *argv[], struct configuration_spec * config)
267 const struct gateway *g;
271 freez(config->proxy_args_header);
272 freez(config->proxy_args_invocation);
273 freez(config->proxy_args_gateways);
274 freez(config->proxy_args_trailer);
280 "Server: IJ/" VERSION "\n"
281 "Content-type: text/html\n\n"
285 "<title>Internet Junkbuster Proxy Status</title>"
287 "<body bgcolor=\"#f8f8f0\" link=\"#000078\" alink=\"#ff0022\" vlink=\"#787878\">\n"
290 "<a href=\"" REDIRECT_URL "faq#show\">Proxy Status</a>\n"
292 "<h2>You are using the " BANNER " <sup><small><small>TM</small></small></sup></h2>\n"
293 "Version: " VERSION "\n"
294 "<br>Home page: <a href=\"" HOME_PAGE_URL "\">" HOME_PAGE_URL "</a>\n"
299 "<h2>The program was invoked as follows</h2>\n");
301 for (i=0; i < argc; i++)
303 b = strsav(b, argv[i]);
306 b = strsav(b, "<br>\n");
308 config->proxy_args_header = b;
310 config->proxy_args_invocation = strsav(
311 config->proxy_args_invocation,
313 "and the following options were set in the configuration file"
320 "<h2>It supports the following gateway protocols:</h2>\n");
322 for (g = gateways; g->name; g++)
324 b = strsav(b, g->name);
327 b = strsav(b, "<br>\n");
329 config->proxy_args_gateways = b;
333 /*********************************************************************
335 * Function : end_proxy_args
337 * Description : Create the "bottom" of the show-proxy-args page.
343 *********************************************************************/
344 void end_proxy_args(struct configuration_spec * config)
349 /* Instead of including *all* dot h's in the project (thus creating a
350 * tremendous amount of dependencies), I will concede to declaring them
351 * as extern's. This forces the developer to add to this list, but oh well.
354 #ifndef SPLIT_PROXY_ARGS
355 if (suppress_blocklists && suppress_message!=NULL)
357 b = strsav(b, "<h2>File contents</h2>\n");
358 b = strsav(b, suppress_message);
361 #endif /* ndef SPLIT_PROXY_ARGS */
363 b = strsav(b, "<h2>Source versions:</h2>\n");
364 b = strsav(b, "<pre>");
366 #define SHOW_RCS(__x) \
368 extern const char __x[]; \
369 sprintf(buf, "%s\n", __x); \
370 b = strsav(b, buf); \
373 /* In alphabetical order */
375 SHOW_RCS(cygwin_h_rcs)
377 SHOW_RCS(encode_h_rcs)
379 SHOW_RCS(errlog_h_rcs)
381 SHOW_RCS(filters_h_rcs)
382 SHOW_RCS(filters_rcs)
383 SHOW_RCS(gateway_h_rcs)
384 SHOW_RCS(gateway_rcs)
386 SHOW_RCS(gnu_regex_h_rcs)
387 SHOW_RCS(gnu_regex_rcs)
388 #endif /* def GNU_REGEX */
389 SHOW_RCS(jbsockets_h_rcs)
390 SHOW_RCS(jbsockets_rcs)
394 SHOW_RCS(killpopup_h_rcs)
395 SHOW_RCS(killpopup_rcs)
396 #endif /* def KILLPOPUPS */
397 SHOW_RCS(loadcfg_h_rcs)
398 SHOW_RCS(loadcfg_rcs)
399 SHOW_RCS(loaders_h_rcs)
400 SHOW_RCS(loaders_rcs)
401 SHOW_RCS(miscutil_h_rcs)
402 SHOW_RCS(miscutil_rcs)
403 SHOW_RCS(parsers_h_rcs)
404 SHOW_RCS(parsers_rcs)
408 #endif /* def PCRS */
409 SHOW_RCS(project_h_rcs)
410 SHOW_RCS(showargs_h_rcs)
411 SHOW_RCS(showargs_rcs)
412 SHOW_RCS(ssplit_h_rcs)
416 SHOW_RCS(w32log_h_rcs)
418 SHOW_RCS(w32res_h_rcs)
419 SHOW_RCS(w32rulesdlg_h_rcs)
420 SHOW_RCS(w32rulesdlg_rcs)
421 SHOW_RCS(w32taskbar_h_rcs)
422 SHOW_RCS(w32taskbar_rcs)
423 #endif /* ndef _WIN_CONSOLE */
424 SHOW_RCS(win32_h_rcs)
426 #endif /* def _WIN32 */
430 b = strsav(b, "</pre>\n");
432 b = strsav(b, "<h2>Conditional defines:</h2>\n<ul>");
435 b = strsav(b, " <li><code>#define <b>REGEX</b></code> - Support for regular expressions in the path specs.</li>\n");
436 #else /* ifndef REGEX */
437 b = strsav(b, " <li><code>#undef <b>REGEX</b></code> - No support for regular expressions in the path specs.</li>\n");
438 #endif /* ndef REGEX */
441 b = strsav(b, " <li><code>#define <b>PCRE</b></code> - Use PCRE rather than old GNU regex library.</li>\n");
442 #else /* ifndef PCRE */
443 b = strsav(b, " <li><code>#undef <b>PCRE</b></code> - Use old GNU regex library rather than PCRE.</li>\n");
444 #endif /* ndef PCRE */
447 b = strsav(b, " <li><code>#define <b>PCRS</b></code> - Enables arbitrary content modification regexps.</li>\n");
448 #else /* ifndef PCRS */
449 b = strsav(b, " <li><code>#undef <b>PCRS</b></code> - Disables arbitrary content modification regexps.</li>\n");
450 #endif /* ndef PCRS */
453 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");
454 #else /* ifndef TOGGLE */
455 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");
456 #endif /* ndef TOGGLE */
459 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");
460 #else /* ifndef FORCE_LOAD */
461 b = strsav(b, " <li><code>#undef <b>FORCE_LOAD</b></code> - Disables bypassing filtering for a single page.</li>\n");
462 #endif /* ndef FORCE_LOAD */
465 b = strsav(b, " <li><code>#define <b>DENY_GZIP</b></code> - Prevents requests from being compressed - required for PCRS.</li>\n");
466 #else /* ifndef DENY_GZIP */
467 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");
468 #endif /* ndef DENY_GZIP */
471 b = strsav(b, " <li><code>#define <b>STATISTICS</b></code> - Enables statistics function.</li>\n");
472 #else /* ifndef STATISTICS */
473 b = strsav(b, " <li><code>#undef <b>STATISTICS</b></code> - Disables statistics function.</li>\n");
474 #endif /* ndef STATISTICS */
476 #ifdef SPLIT_PROXY_ARGS
477 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");
478 #else /* ifndef SPLIT_PROXY_ARGS */
479 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");
480 #endif /* ndef SPLIT_PROXY_ARGS */
483 b = strsav(b, " <li><code>#define <b>KILLPOPUPS</b></code> - Enables killing JavaScript popups.</li>\n");
484 #else /* ifndef KILLPOPUPS */
485 b = strsav(b, " <li><code>#undef <b>KILLPOPUPS</b></code> - Disables killing JavaScript popups.</li>\n");
486 #endif /* ndef KILLPOPUPS */
489 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");
490 #else /* ifndef WEBDAV */
491 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");
492 #endif /* ndef WEBDAV */
494 #ifdef DETECT_MSIE_IMAGES
495 b = strsav(b, " <li><code>#define <b>DETECT_MSIE_IMAGES</b></code> - Enables detecting image requests automatically for MSIE.</li>\n");
496 #else /* ifndef DETECT_MSIE_IMAGES */
497 b = strsav(b, " <li><code>#undef <b>DETECT_MSIE_IMAGES</b></code> - Disables detecting image requests automatically for MSIE.</li>\n");
498 #endif /* ndef DETECT_MSIE_IMAGES */
500 #ifdef IMAGE_BLOCKING
501 b = strsav(b, " <li><code>#define <b>IMAGE_BLOCKING</b></code> - Enables sending \"blocked\" images instead of HTML.</li>\n");
502 #else /* ifndef IMAGE_BLOCKING */
503 b = strsav(b, " <li><code>#undef <b>IMAGE_BLOCKING</b></code> - Disables sending \"blocked\" images instead of HTML.</li>\n");
504 #endif /* ndef IMAGE_BLOCKING */
507 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");
508 #else /* ifndef ACL_FILES */
509 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");
510 #endif /* ndef ACL_FILES */
513 b = strsav(b, " <li><code>#define <b>TRUST_FILES</b></code> - Enables the use of trust files.</li>\n");
514 #else /* ifndef TRUST_FILES */
515 b = strsav(b, " <li><code>#undef <b>TRUST_FILES</b></code> - Disables the use of trust files.</li>\n");
516 #endif /* ndef TRUST_FILES */
519 b = strsav(b, " <li><code>#define <b>JAR_FILES</b></code> - Enables the use of jar files to capture cookies.</li>\n");
520 #else /* ifndef JAR_FILES */
521 b = strsav(b, " <li><code>#undef <b>JAR_FILES</b></code> - Disables the use of jar files to capture cookies.</li>\n");
522 #endif /* ndef JAR_FILES */
524 #ifdef FAST_REDIRECTS
525 b = strsav(b, " <li><code>#define <b>FAST_REDIRECTS</b></code> - Enables intercepting remote script redirects.</li>\n");
526 #else /* ifndef FAST_REDIRECTS */
527 b = strsav(b, " <li><code>#undef <b>FAST_REDIRECTS</b></code> - Disables intercepting remote script redirects.</li>\n");
528 #endif ndef /* FAST_REDIRECTS */
530 b = strsav(b, "</ul>\n<br>\n");
533 "<small><small><p>\n"
534 "The " BANNER " Proxy - \n"
535 "<a href=\"" HOME_PAGE_URL "\">" HOME_PAGE_URL "</a><p>\n"
536 "Copyright © 2001 <a href=\"" HOME_PAGE_URL "\">the SourceForge IJBSWA team</a><br>\n"
537 "Copyright © 1997 <a href=\"http://www.junkbusters.com/\">\n" "Junkbusters Corporation</a><br>\n"
538 "Copying and distribution permitted under the "
539 "<a href=\"http://www.gnu.org/copyleft/gpl.html\">GNU General Public License.</a>\n"
544 config->proxy_args_trailer = b;