1 const char cgi_rcs[] = "$Id: cgi.c,v 1.61 2002/04/10 13:37:48 oes Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/cgi.c,v $
6 * Purpose : Declares functions to intercept request, generate
7 * html or gif answers, and to compose HTTP resonses.
8 * This only contains the framework functions, the
9 * actual handler functions are declared elsewhere.
11 * Functions declared include:
14 * Copyright : Written by and Copyright (C) 2001 the SourceForge
15 * Privoxy team. http://www.privoxy.org/
17 * Based on the Internet Junkbuster originally written
18 * by and Copyright (C) 1997 Anonymous Coders and
19 * Junkbusters Corporation. http://www.junkbusters.com
21 * This program is free software; you can redistribute it
22 * and/or modify it under the terms of the GNU General
23 * Public License as published by the Free Software
24 * Foundation; either version 2 of the License, or (at
25 * your option) any later version.
27 * This program is distributed in the hope that it will
28 * be useful, but WITHOUT ANY WARRANTY; without even the
29 * implied warranty of MERCHANTABILITY or FITNESS FOR A
30 * PARTICULAR PURPOSE. See the GNU General Public
31 * License for more details.
33 * The GNU General Public License should be included with
34 * this file. If not, you can view it at
35 * http://www.gnu.org/copyleft/gpl.html
36 * or write to the Free Software Foundation, Inc., 59
37 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
41 * Revision 1.61 2002/04/10 13:37:48 oes
42 * Made templates modular: template_load now recursive with max depth 1
44 * Revision 1.60 2002/04/08 20:50:25 swa
47 * Revision 1.59 2002/04/05 15:51:51 oes
48 * - added send-stylesheet CGI
49 * - bugfix: error-pages now get correct request protocol
51 * - kludged CGI descriptions and menu not to break JS syntax
53 * Revision 1.58 2002/03/29 03:33:13 david__schmidt
54 * Fix Mac OSX compiler warnings
56 * Revision 1.57 2002/03/26 22:29:54 swa
57 * we have a new homepage!
59 * Revision 1.56 2002/03/24 17:50:46 jongfoster
60 * Fixing compile error if actions file editor disabled
62 * Revision 1.55 2002/03/24 16:55:06 oes
63 * Making GIF checkerboard transparent
65 * Revision 1.54 2002/03/24 16:18:15 jongfoster
68 * Revision 1.53 2002/03/24 16:06:00 oes
69 * Correct transparency for checkerboard PNG. Thanks, Magnus!
71 * Revision 1.52 2002/03/24 15:23:33 jongfoster
74 * Revision 1.51 2002/03/24 13:25:43 swa
75 * name change related issues
77 * Revision 1.50 2002/03/16 23:54:06 jongfoster
78 * Adding graceful termination feature, to help look for memory leaks.
79 * If you enable this (which, by design, has to be done by hand
80 * editing config.h) and then go to http://i.j.b/die, then the program
81 * will exit cleanly after the *next* request. It should free all the
82 * memory that was used.
84 * Revision 1.49 2002/03/13 00:27:04 jongfoster
87 * Revision 1.48 2002/03/08 17:47:07 jongfoster
90 * Revision 1.47 2002/03/08 16:41:33 oes
91 * Added GIF images again
93 * Revision 1.46 2002/03/07 03:48:38 oes
94 * - Changed built-in images from GIF to PNG
95 * (with regard to Unisys patent issue)
96 * - Added a 4x4 pattern PNG which is less intrusive
97 * than the logo but also clearly marks the deleted banners
99 * Revision 1.45 2002/03/06 22:54:35 jongfoster
100 * Automated function-comment nitpicking.
102 * Revision 1.44 2002/03/05 22:43:45 david__schmidt
103 * - Better error reporting on OS/2
104 * - Fix double-slash comment (oops)
106 * Revision 1.43 2002/03/05 21:33:45 david__schmidt
107 * - Re-enable OS/2 building after new parms were added
108 * - Fix false out of memory report when resolving CGI templates when no IP
109 * address is available of failed attempt (a la no such domain)
111 * Revision 1.42 2002/01/21 00:33:20 jongfoster
112 * Replacing strsav() with the safer string_append() or string_join().
113 * Adding map_block_keep() to save a few bytes in the edit-actions-list HTML.
114 * Adding missing html_encode() to error message generators.
115 * Adding edit-actions-section-swap and many "shortcuts" to the list of CGIs.
117 * Revision 1.41 2002/01/17 20:56:22 jongfoster
118 * Replacing hard references to the URL of the config interface
119 * with #defines from project.h
121 * Revision 1.40 2002/01/09 14:26:46 oes
122 * Added support for thread-safe gmtime_r call.
124 * Revision 1.39 2001/11/16 00:48:13 jongfoster
125 * Fixing a compiler warning
127 * Revision 1.38 2001/11/13 00:31:21 jongfoster
128 * - Adding new CGIs for use by non-JavaScript browsers:
129 * edit-actions-url-form
130 * edit-actions-add-url-form
131 * edit-actions-remove-url-form
132 * - Fixing make_menu()'s HTML generation - it now quotes the href parameter.
135 * Revision 1.37 2001/11/01 14:28:47 david__schmidt
136 * Show enablement/disablement status in almost all templates.
137 * There is a little trickiness here: apparent recursive resolution of
138 * @if-enabled-then@ caused the toggle template to show status out-of-phase with
139 * the actual enablement status. So a similar construct,
140 * @if-enabled-display-then@, is used to resolve the status display on non-'toggle'
143 * Revision 1.36 2001/10/26 17:33:27 oes
146 * Revision 1.35 2001/10/23 21:48:19 jongfoster
147 * Cleaning up error handling in CGI functions - they now send back
148 * a HTML error page and should never cause a FATAL error. (Fixes one
149 * potential source of "denial of service" attacks).
151 * CGI actions file editor that works and is actually useful.
153 * Ability to toggle Junkbuster remotely using a CGI call.
155 * You can turn off both the above features in the main configuration
156 * file, e.g. if you are running a multi-user proxy.
158 * Revision 1.34 2001/10/18 22:22:09 david__schmidt
159 * Only show "Local support" on templates conditionally:
160 * - if either 'admin-address' or 'proxy-info-url' are uncommented in config
161 * - if not, no Local support section appears
163 * Revision 1.33 2001/10/14 22:28:41 jongfoster
164 * Fixing stupid typo.
166 * Revision 1.32 2001/10/14 22:20:18 jongfoster
167 * - Changes to CGI dispatching method to match CGI names exactly,
168 * rather than doing a prefix match.
169 * - No longer need to count the length of the CGI handler names by hand.
170 * - Adding new handler for 404 error when disptching a CGI, if none of
171 * the handlers match.
172 * - Adding new handlers for CGI actionsfile editor.
174 * Revision 1.31 2001/10/10 10:56:39 oes
175 * Failiure to load template now fatal. Before, the user got a hard-to-understand assertion failure from cgi.c
177 * Revision 1.30 2001/10/02 15:30:57 oes
178 * Introduced show-request cgi
180 * Revision 1.29 2001/09/20 15:47:44 steudten
182 * Fix BUG: Modify int size to size_t size in fill_template()
183 * - removes big trouble on machines where sizeof(int) != sizeof(size_t).
185 * Revision 1.28 2001/09/19 18:00:37 oes
186 * - Deletef time() FIXME (Can't fail under Linux either, if
187 * the argument is guaranteed to be in out address space,
190 * - Pointer notation cosmetics
191 * - Fixed a minor bug in template_fill(): Failiure of
192 * pcrs_execute() now secure.
194 * Revision 1.27 2001/09/16 17:08:54 jongfoster
195 * Moving simple CGI functions from cgi.c to new file cgisimple.c
197 * Revision 1.26 2001/09/16 15:47:37 jongfoster
198 * First version of CGI-based edit interface. This is very much a
199 * work-in-progress, and you can't actually use it to edit anything
200 * yet. You must #define FEATURE_CGI_EDIT_ACTIONS for these changes
201 * to have any effect.
203 * Revision 1.25 2001/09/16 15:02:35 jongfoster
204 * Adding i.j.b/robots.txt.
205 * Inlining add_stats() since it's only ever called from one place.
207 * Revision 1.24 2001/09/16 11:38:01 jongfoster
208 * Splitting fill_template() into 2 functions:
209 * template_load() loads the file
210 * template_fill() performs the PCRS regexps.
211 * This is because the CGI edit interface has a "table row"
212 * template which is used many times in the page - this
213 * change means it's only loaded from disk once.
215 * Revision 1.23 2001/09/16 11:16:05 jongfoster
216 * Better error handling in dispatch_cgi() and parse_cgi_parameters()
218 * Revision 1.22 2001/09/16 11:00:10 jongfoster
219 * New function alloc_http_response, for symmetry with free_http_response
221 * Revision 1.21 2001/09/13 23:53:03 jongfoster
222 * Support for both static and dynamically generated CGI pages.
223 * Correctly setting Last-Modified: and Expires: HTTP headers.
225 * Revision 1.20 2001/09/13 23:40:36 jongfoster
226 * (Cosmetic only) Indentation correction
228 * Revision 1.19 2001/09/13 23:31:25 jongfoster
229 * Moving image data to cgi.c rather than cgi.h.
231 * Revision 1.18 2001/08/05 16:06:20 jongfoster
232 * Modifiying "struct map" so that there are now separate header and
233 * "map_entry" structures. This means that functions which modify a
234 * map no longer need to return a pointer to the modified map.
235 * Also, it no longer reverses the order of the entries (which may be
236 * important with some advanced template substitutions).
238 * Revision 1.17 2001/08/05 15:57:38 oes
239 * Adapted finish_http_response to new list_to_text
241 * Revision 1.16 2001/08/01 21:33:18 jongfoster
242 * Changes to fill_template() that reduce memory usage without having
243 * an impact on performance. I also renamed some variables so as not
244 * to clash with the C++ keywords "new" and "template".
246 * Revision 1.15 2001/08/01 21:19:22 jongfoster
247 * Moving file version information to a separate CGI page.
249 * Revision 1.14 2001/08/01 00:19:03 jongfoster
250 * New function: map_conditional() for an if-then-else syntax.
251 * Changing to use new version of show_defines()
253 * Revision 1.13 2001/07/30 22:08:36 jongfoster
254 * Tidying up #defines:
255 * - All feature #defines are now of the form FEATURE_xxx
256 * - Permanently turned off WIN_GUI_EDIT
257 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
259 * Revision 1.12 2001/07/29 18:47:05 jongfoster
260 * Adding missing #include "loadcfg.h"
262 * Revision 1.11 2001/07/18 17:24:37 oes
263 * Changed to conform to new pcrs interface
265 * Revision 1.10 2001/07/13 13:53:13 oes
266 * Removed all #ifdef PCRS and related code
268 * Revision 1.9 2001/06/29 21:45:41 oes
269 * Indentation, CRLF->LF, Tab-> Space
271 * Revision 1.8 2001/06/29 13:21:46 oes
272 * - Cosmetics: renamed and reordered functions, variables,
273 * texts, improved comments etc
275 * - Removed ij_untrusted_url() The relevant
276 * info is now part of the "untrusted" page,
277 * which is generated by filters.c:trust_url()
279 * - Generators of content now call finish_http_response()
280 * themselves, making jcc.c:chat() a little less
283 * - Removed obsolete "Pragma: no-cache" from our headers
285 * - http_responses now know their head length
287 * - fill_template now uses the new interface to pcrs, so that
288 * - long jobs (like whole files) no longer have to be assembled
289 * in a fixed size buffer
290 * - the new T (trivial) option is used, and the replacement may
291 * contain Perl syntax backrefs without confusing pcrs
293 * - Introduced default_exports() which generates a set of exports
294 * common to all CGIs and other content generators
296 * - Introduced convenience function map_block_killer()
298 * - Introduced convenience function make_menu()
300 * - Introduced CGI-like function error_response() which generates
301 * the "No such domain" and "Connect failed" messages using the
304 * - cgi_show_url_info:
305 * - adapted to new CGI features
306 * - form and answers now generated from same template
307 * - http:// prefix in URL now OK
310 * - adapted to new CGI features
311 * - no longer uses csp->init_proxy_args
314 * - moved menu generation to make_menu()
316 * - add_stats now writes single export map entries instead
319 * - Moved redirect_url() to filters.c
321 * - Fixed mem leak in free_http_response(), map_block_killer(),
323 * - Removed logentry from cancelled commit
325 * Revision 1.7 2001/06/09 10:51:58 jongfoster
326 * Changing "show URL info" handler to new style.
327 * Changing BUFSIZ ==> BUFFER_SIZE
329 * Revision 1.6 2001/06/07 23:05:19 jongfoster
330 * Removing code related to old forward and ACL files.
332 * Revision 1.5 2001/06/05 19:59:16 jongfoster
333 * Fixing multiline character string (a GCC-only "feature"), and snprintf (it's _snprintf under VC++).
335 * Revision 1.4 2001/06/04 10:41:52 swa
336 * show version string of cgi.h and cgi.c
338 * Revision 1.3 2001/06/03 19:12:16 oes
339 * introduced new cgi handling
341 * No revisions before 1.3
343 **********************************************************************/
349 #include <sys/types.h>
356 #define snprintf _snprintf
357 #endif /* def _WIN32 */
365 #include "miscutil.h"
366 #include "cgisimple.h"
367 #ifdef FEATURE_CGI_EDIT_ACTIONS
369 #endif /* def FEATURE_CGI_EDIT_ACTIONS */
371 /* loadcfg.h is for g_bToggleIJB only */
373 const char cgi_h_rcs[] = CGI_H_VERSION;
376 * List of CGI functions: name, handler, description
377 * Note: Do NOT use single quotes in the description;
378 * this will break the dynamic "blocked" template!
380 static const struct cgi_dispatcher cgi_dispatchers[] = {
383 "Privoxy main page" },
384 #ifdef FEATURE_GRACEFUL_TERMINATION
387 "<b>Shut down</b> - <em class=\"warning\">Do not deploy this build in a production environment, "
388 "this is a one click Denial Of Service attack!!!</em>" },
392 "Show information about the current configuration" },
395 "Show the source code version numbers" },
398 "Show the request headers." },
401 "Show which actions apply to a URL and why" },
402 #ifdef FEATURE_CGI_EDIT_ACTIONS
405 "Toggle Privoxy on or off" },
408 "Edit the actions list" },
411 { "eaa", /* Shortcut for edit-actions-add-url-form */
412 cgi_edit_actions_add_url_form,
414 { "eau", /* Shortcut for edit-actions-url-form */
415 cgi_edit_actions_url_form,
417 { "ear", /* Shortcut for edit-actions-remove-url-form */
418 cgi_edit_actions_remove_url_form,
420 { "eas", /* Shortcut for edit-actions-for-url */
421 cgi_edit_actions_for_url,
423 { "easa", /* Shortcut for edit-actions-section-add */
424 cgi_edit_actions_section_add,
426 { "easr", /* Shortcut for edit-actions-section-remove */
427 cgi_edit_actions_section_remove,
429 { "eass", /* Shortcut for edit-actions-section-swap */
430 cgi_edit_actions_section_swap,
432 { "edit-actions-for-url",
433 cgi_edit_actions_for_url,
434 NULL /* Edit the actions for (a) specified URL(s) */ },
435 { "edit-actions-list",
436 cgi_edit_actions_list,
437 NULL /* Edit the actions list */ },
438 { "edit-actions-submit",
439 cgi_edit_actions_submit,
440 NULL /* Change the actions for (a) specified URL(s) */ },
441 { "edit-actions-url",
442 cgi_edit_actions_url,
443 NULL /* Change a URL pattern in the actionsfile */ },
444 { "edit-actions-url-form",
445 cgi_edit_actions_url_form,
446 NULL /* Form to change a URL pattern in the actionsfile */ },
447 { "edit-actions-add-url",
448 cgi_edit_actions_add_url,
449 NULL /* Add a URL pattern to the actionsfile */ },
450 { "edit-actions-add-url-form",
451 cgi_edit_actions_add_url_form,
452 NULL /* Form to add a URL pattern to the actionsfile */ },
453 { "edit-actions-remove-url",
454 cgi_edit_actions_remove_url,
455 NULL /* Remove a URL pattern from the actionsfile */ },
456 { "edit-actions-remove-url-form",
457 cgi_edit_actions_remove_url_form,
458 NULL /* Form to remove a URL pattern from the actionsfile */ },
459 { "edit-actions-section-add",
460 cgi_edit_actions_section_add,
461 NULL /* Remove a section from the actionsfile */ },
462 { "edit-actions-section-remove",
463 cgi_edit_actions_section_remove,
464 NULL /* Remove a section from the actionsfile */ },
465 { "edit-actions-section-swap",
466 cgi_edit_actions_section_swap,
467 NULL /* Swap two sections in the actionsfile */ },
468 #endif /* def FEATURE_CGI_EDIT_ACTIONS */
471 NULL /* Sends a robots.txt file to tell robots to go away. */ },
474 NULL /* Send a built-in image */ },
477 NULL /* Send templates/cgi-style.css */ },
479 cgi_transparent_image,
480 NULL /* Send a transparent image (short name) */ },
481 { NULL, /* NULL Indicates end of list and default page */
483 NULL /* Unknown CGI page */ }
488 * Bulit-in images for ad replacement
490 * Hint: You can encode your own images like this:
491 * cat your-image | perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o", unpack("C", $c)); }'
494 #ifdef FEATURE_NO_GIFS
497 * Checkerboard pattern, as a PNG.
499 const char image_pattern_data[] =
500 "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104"
501 "\122\000\000\000\004\000\000\000\004\010\002\000\000\000\046"
502 "\223\011\051\000\000\000\006\142\113\107\104\000\310\000\310"
503 "\000\310\052\045\225\037\000\000\000\032\111\104\101\124\170"
504 "\332\143\070\161\342\304\377\377\377\041\044\003\234\165\342"
505 "\304\011\006\234\062\000\125\200\052\251\125\174\360\223\000"
506 "\000\000\000\111\105\116\104\256\102\140\202";
509 * 1x1 transparant PNG.
511 const char image_blank_data[] =
512 "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104\122"
513 "\000\000\000\004\000\000\000\004\010\006\000\000\000\251\361\236"
514 "\176\000\000\000\007\164\111\115\105\007\322\003\013\020\073\070"
515 "\013\025\036\203\000\000\000\011\160\110\131\163\000\000\013\022"
516 "\000\000\013\022\001\322\335\176\374\000\000\000\004\147\101\115"
517 "\101\000\000\261\217\013\374\141\005\000\000\000\033\111\104\101"
518 "\124\170\332\143\070\161\342\304\207\377\377\377\347\302\150\006"
519 "\144\016\210\146\040\250\002\000\042\305\065\221\270\027\131\110"
520 "\000\000\000\000\111\105\116\104\256\102\140\202";
524 * Checkerboard pattern, as a GIF.
526 const char image_pattern_data[] =
527 "\107\111\106\070\071\141\004\000\004\000\200\000\000\310\310"
528 "\310\377\377\377\041\376\016\111\040\167\141\163\040\141\040"
529 "\142\141\156\156\145\162\000\041\371\004\001\012\000\001\000"
530 "\054\000\000\000\000\004\000\004\000\000\002\005\104\174\147"
534 * 1x1 transparant GIF.
536 const char image_blank_data[] =
537 "GIF89a\001\000\001\000\200\000\000\377\377\377\000\000"
538 "\000!\371\004\001\000\000\000\000,\000\000\000\000\001"
539 "\000\001\000\000\002\002D\001\000;";
542 const size_t image_pattern_length = sizeof(image_pattern_data) - 1;
543 const size_t image_blank_length = sizeof(image_blank_data) - 1;
546 static struct http_response cgi_error_memory_response[1];
548 static struct http_response *dispatch_known_cgi(struct client_state * csp,
550 static struct map *parse_cgi_parameters(char *argstring);
553 /*********************************************************************
555 * Function : dispatch_cgi
557 * Description : Checks if a request URL has either the magical
558 * hostname CGI_SITE_1_HOST (usully http://i.j.b/) or
559 * matches CGI_SITE_2_HOST CGI_SITE_2_PATH (usually
560 * http://ijbswa.sourceforge.net/config). If so, it passes
561 * the (rest of the) path onto dispatch_known_cgi, which
562 * calls the relevant CGI handler function.
565 * 1 : csp = Current client state (buffers, headers, etc...)
567 * Returns : http_response if match, NULL if nonmatch or handler fail
569 *********************************************************************/
570 struct http_response *dispatch_cgi(struct client_state *csp)
572 const char *host = csp->http->host;
573 const char *path = csp->http->path;
576 * Should we intercept ?
579 /* Note: "example.com" and "example.com." are equivalent hostnames. */
581 /* Either the host matches CGI_SITE_1_HOST ..*/
582 if ( ( (0 == strcmpic(host, CGI_SITE_1_HOST))
583 || (0 == strcmpic(host, CGI_SITE_1_HOST ".")))
584 && (path[0] == '/') )
586 /* ..then the path will all be for us. Remove leading '/' */
589 /* Or it's the host part CGI_SITE_2_HOST, and the path CGI_SITE_2_PATH */
590 else if ( ( (0 == strcmpic(host, CGI_SITE_2_HOST ))
591 || (0 == strcmpic(host, CGI_SITE_2_HOST ".")) )
592 && (0 == strncmpic(path, CGI_SITE_2_PATH, strlen(CGI_SITE_2_PATH))) )
594 /* take everything following CGI_SITE_2_PATH */
595 path += strlen(CGI_SITE_2_PATH);
598 /* skip the forward slash after CGI_SITE_2_PATH */
601 else if (*path != '\0')
604 * wierdness: URL is /configXXX, where XXX is some string
605 * Do *NOT* intercept.
617 * This is a CGI call.
620 return dispatch_known_cgi(csp, path);
624 /*********************************************************************
626 * Function : dispatch_known_cgi
628 * Description : Processes a CGI once dispatch_cgi has determined that
629 * it matches one of the magic prefixes. Parses the path
630 * as a cgi name plus query string, prepares a map that
631 * maps CGI parameter names to their values, initializes
632 * the http_response struct, and calls the relevant CGI
636 * 1 : csp = Current client state (buffers, headers, etc...)
637 * 2 : path = Path of CGI, with the CGI prefix removed.
638 * Should not have a leading "/".
640 * Returns : http_response, or NULL on handler failure or out of
643 *********************************************************************/
644 static struct http_response *dispatch_known_cgi(struct client_state * csp,
647 const struct cgi_dispatcher *d;
648 struct map *param_list;
649 struct http_response *rsp;
650 char *query_args_start;
654 if (NULL == (path_copy = strdup(path)))
656 return cgi_error_memory();
659 query_args_start = path_copy;
660 while (*query_args_start && *query_args_start != '?')
664 if (*query_args_start == '?')
666 *query_args_start++ = '\0';
669 if (NULL == (param_list = parse_cgi_parameters(query_args_start)))
672 return cgi_error_memory();
678 * path_copy = CGI call name
679 * param_list = CGI params, as map
682 /* Get mem for response or fail*/
683 if (NULL == (rsp = alloc_http_response()))
686 free_map(param_list);
687 return cgi_error_memory();
690 log_error(LOG_LEVEL_GPC, "%s%s cgi call", csp->http->hostport, csp->http->path);
691 log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 3",
692 csp->ip_addr_str, csp->http->cmd);
694 /* Find and start the right CGI function*/
698 if ((d->name == NULL) || (strcmp(path_copy, d->name) == 0))
700 err = (d->handler)(csp, rsp, param_list);
702 free_map(param_list);
703 if (err == JB_ERR_CGI_PARAMS)
705 err = cgi_error_bad_param(csp, rsp);
710 return finish_http_response(rsp);
714 /* Error in handler, probably out-of-memory */
715 free_http_response(rsp);
716 return cgi_error_memory();
724 /*********************************************************************
726 * Function : parse_cgi_parameters
728 * Description : Parse a URL-encoded argument string into name/value
729 * pairs and store them in a struct map list.
732 * 1 : string = string to be parsed. Will be trashed.
734 * Returns : pointer to param list, or NULL if out of memory.
736 *********************************************************************/
737 static struct map *parse_cgi_parameters(char *argstring)
740 char *vector[BUFFER_SIZE];
742 struct map *cgi_params;
744 if (NULL == (cgi_params = new_map()))
749 pairs = ssplit(argstring, "&", vector, SZ(vector), 1, 1);
751 for (i = 0; i < pairs; i++)
753 if ((NULL != (p = strchr(vector[i], '='))) && (*(p+1) != '\0'))
756 if (map(cgi_params, url_decode(vector[i]), 0, url_decode(++p), 0))
758 free_map(cgi_params);
769 /*********************************************************************
771 * Function : error_response
773 * Description : returns an http_response that explains the reason
774 * why a request failed.
777 * 1 : csp = Current client state (buffers, headers, etc...)
778 * 2 : templatename = Which template should be used for the answer
779 * 3 : sys_err = system error number
781 * Returns : A http_response. If we run out of memory, this
782 * will be cgi_error_memory().
784 *********************************************************************/
785 struct http_response *error_response(struct client_state *csp,
786 const char *templatename,
790 struct http_response *rsp;
791 struct map * exports = default_exports(csp, NULL);
794 return cgi_error_memory();
797 if (NULL == (rsp = alloc_http_response()))
800 return cgi_error_memory();
803 err = map(exports, "host", 1, html_encode(csp->http->host), 0);
804 if (!err) err = map(exports, "hostport", 1, html_encode(csp->http->hostport), 0);
805 if (!err) err = map(exports, "path", 1, html_encode(csp->http->path), 0);
806 if (!err) err = map(exports, "error", 1, html_encode_and_free_original(safe_strerror(sys_err)), 0);
807 if (!err) err = map(exports, "protocol", 1, csp->http->ssl ? "https://" : "http://", 1);
810 err = map(exports, "host-ip", 1, html_encode(csp->http->host_ip_addr_str), 0);
813 /* Some failures, like "404 no such domain", don't have an IP address. */
814 err = map(exports, "host-ip", 1, html_encode(csp->http->host), 0);
822 free_http_response(rsp);
823 return cgi_error_memory();
826 if (!strcmp(templatename, "no-such-domain"))
828 rsp->status = strdup("404 No such domain");
829 if (rsp->status == NULL)
832 free_http_response(rsp);
833 return cgi_error_memory();
836 else if (!strcmp(templatename, "connect-failed"))
838 rsp->status = strdup("503 Connect failed");
839 if (rsp->status == NULL)
842 free_http_response(rsp);
843 return cgi_error_memory();
847 err = template_fill_for_cgi(csp, templatename, exports, rsp);
850 free_http_response(rsp);
851 return cgi_error_memory();
854 return finish_http_response(rsp);
858 /*********************************************************************
860 * Function : cgi_init_error_messages
862 * Description : Call at the start of the program to initialize
863 * the error message used by cgi_error_memory().
869 *********************************************************************/
870 void cgi_init_error_messages(void)
872 memset(cgi_error_memory_response, '\0', sizeof(*cgi_error_memory_response));
873 cgi_error_memory_response->head =
874 "HTTP/1.0 500 Internal Privoxy Error\r\n"
875 "Content-Type: text/html\r\n"
877 cgi_error_memory_response->body =
879 "<head><title>500 Internal Privoxy Error</title></head>\r\n"
881 "<h1>500 Internal Privoxy Error</h1>\r\n"
882 "<p>Privoxy <b>ran out of memory</b> while processing your request.</p>\r\n"
883 "<p>Please contact your proxy administrator, or try again later</p>\r\n"
887 cgi_error_memory_response->head_length =
888 strlen(cgi_error_memory_response->head);
889 cgi_error_memory_response->content_length =
890 strlen(cgi_error_memory_response->body);
894 /*********************************************************************
896 * Function : cgi_error_memory
898 * Description : Called if a CGI function runs out of memory.
899 * Returns a statically-allocated error response.
902 * 1 : csp = Current client state (buffers, headers, etc...)
903 * 2 : rsp = http_response data structure for output
904 * 3 : template_name = Name of template that could not
907 * Returns : JB_ERR_OK on success
908 * JB_ERR_MEMORY on out-of-memory error.
910 *********************************************************************/
911 struct http_response *cgi_error_memory(void)
913 /* assert that it's been initialized. */
914 assert(cgi_error_memory_response->head);
916 return cgi_error_memory_response;
920 /*********************************************************************
922 * Function : cgi_error_no_template
924 * Description : Almost-CGI function that is called if a templae
925 * cannot be loaded. Note this is not a true CGI,
926 * it takes a template name rather than a map of
930 * 1 : csp = Current client state (buffers, headers, etc...)
931 * 2 : rsp = http_response data structure for output
932 * 3 : template_name = Name of template that could not
935 * Returns : JB_ERR_OK on success
936 * JB_ERR_MEMORY on out-of-memory error.
938 *********************************************************************/
939 jb_err cgi_error_no_template(struct client_state *csp,
940 struct http_response *rsp,
941 const char *template_name)
943 static const char status[] =
944 "500 Internal Privoxy Error";
945 static const char body_prefix[] =
947 "<head><title>500 Internal Privoxy Error</title></head>\r\n"
949 "<h1>500 Internal Privoxy Error</h1>\r\n"
950 "<p>Privoxy encountered an error while processing your request:</p>\r\n"
951 "<p><b>Could not load template file <code>";
952 static const char body_suffix[] =
953 "</code> or one of it's included components.</b></p>\r\n"
954 "<p>Please contact your proxy administrator.</p>\r\n"
955 "<p>If you are the proxy administrator, please put the required file(s)"
956 "in the <code><i>(confdir)</i>/templates</code> directory. The "
957 "location of the <code><i>(confdir)</i></code> directory "
958 "is specified in the main Privoxy <code>config</code> "
959 "file. (It's typically the Privoxy install directory"
961 ", or <code>/etc/privoxy/</code>"
962 #endif /* ndef _WIN32 */
969 assert(template_name);
971 /* Reset rsp, if needed */
975 rsp->content_length = 0;
976 rsp->head_length = 0;
979 rsp->body = malloc(strlen(body_prefix) + strlen(template_name) + strlen(body_suffix) + 1);
980 if (rsp->body == NULL)
982 return JB_ERR_MEMORY;
984 strcpy(rsp->body, body_prefix);
985 strcat(rsp->body, template_name);
986 strcat(rsp->body, body_suffix);
988 rsp->status = strdup(status);
989 if (rsp->body == NULL)
991 return JB_ERR_MEMORY;
998 /*********************************************************************
1000 * Function : cgi_error_bad_param
1002 * Description : CGI function that is called if the parameters
1003 * (query string) for a CGI were wrong.
1006 * 1 : csp = Current client state (buffers, headers, etc...)
1007 * 2 : rsp = http_response data structure for output
1009 * CGI Parameters : none
1011 * Returns : JB_ERR_OK on success
1012 * JB_ERR_MEMORY on out-of-memory error.
1014 *********************************************************************/
1015 jb_err cgi_error_bad_param(struct client_state *csp,
1016 struct http_response *rsp)
1018 struct map *exports;
1023 if (NULL == (exports = default_exports(csp, NULL)))
1025 return JB_ERR_MEMORY;
1028 return template_fill_for_cgi(csp, "cgi-error-bad-param", exports, rsp);
1032 /*********************************************************************
1034 * Function : get_http_time
1036 * Description : Get the time in a format suitable for use in a
1037 * HTTP header - e.g.:
1038 * "Sun, 06 Nov 1994 08:49:37 GMT"
1041 * 1 : time_offset = Time returned will be current time
1042 * plus this number of seconds.
1043 * 2 : buf = Destination for result. Must be long enough
1044 * to hold 29 characters plus a trailing zero.
1048 *********************************************************************/
1049 void get_http_time(int time_offset, char *buf)
1051 static const char day_names[7][4] =
1052 { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
1053 static const char month_names[12][4] =
1054 { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
1055 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
1058 time_t current_time;
1062 time(¤t_time); /* get current time */
1064 current_time += time_offset;
1066 /* get and save the gmt */
1068 #ifdef HAVE_GMTIME_R
1070 t = gmtime_r(¤t_time, &dummy);
1072 t = gmtime(¤t_time);
1076 /* Format: "Sun, 06 Nov 1994 08:49:37 GMT" */
1078 "%s, %02d %s %4d %02d:%02d:%02d GMT",
1079 day_names[t->tm_wday],
1081 month_names[t->tm_mon],
1091 /*********************************************************************
1093 * Function : finish_http_response
1095 * Description : Fill in the missing headers in an http response,
1096 * and flatten the headers to an http head.
1099 * 1 : rsp = pointer to http_response to be processed
1101 * Returns : A http_response, usually the rsp parameter.
1102 * On error, free()s rsp and returns cgi_error_memory()
1104 *********************************************************************/
1105 struct http_response *finish_http_response(struct http_response *rsp)
1107 char buf[BUFFER_SIZE];
1110 /* Special case - do NOT change this statically allocated response,
1111 * which is ready for output anyway.
1113 if (rsp == cgi_error_memory_response)
1119 * Fill in the HTTP Status
1121 sprintf(buf, "HTTP/1.0 %s", rsp->status ? rsp->status : "200 OK");
1122 err = enlist_first(rsp->headers, buf);
1125 * Set the Content-Length
1127 if (rsp->content_length == 0)
1129 rsp->content_length = rsp->body ? strlen(rsp->body) : 0;
1133 sprintf(buf, "Content-Length: %d", (int)rsp->content_length);
1134 err = enlist(rsp->headers, buf);
1138 * Fill in the default headers:
1140 * Content-Type: default to text/html if not already specified.
1141 * Date: set to current date/time.
1142 * Last-Modified: set to date/time the page was last changed.
1143 * Expires: set to date/time page next needs reloading.
1144 * Cache-Control: set to "no-cache" if applicable.
1146 * See http://www.w3.org/Protocols/rfc2068/rfc2068
1148 if (!err) err = enlist_unique(rsp->headers, "Content-Type: text/html", 13);
1153 * Set Expires to about 10 min into the future so it'll get reloaded
1154 * occasionally, e.g. if Privoxy gets upgraded.
1159 get_http_time(0, buf);
1160 err = enlist_unique_header(rsp->headers, "Date", buf);
1163 /* Some date in the past. */
1164 if (!err) err = enlist_unique_header(rsp->headers, "Last-Modified", "Sat, 17 Jun 2000 12:00:00 GMT");
1168 get_http_time(10 * 60, buf); /* 10 * 60sec = 10 minutes */
1169 err = enlist_unique_header(rsp->headers, "Expires", buf);
1175 * Compliant browsers should not cache this due to the "Cache-Control"
1176 * setting. However, to be certain, we also set both "Last-Modified"
1177 * and "Expires" to the current time.
1179 if (!err) err = enlist_unique_header(rsp->headers, "Cache-Control", "no-cache");
1181 get_http_time(0, buf);
1182 if (!err) err = enlist_unique_header(rsp->headers, "Date", buf);
1183 if (!err) err = enlist_unique_header(rsp->headers, "Last-Modified", buf);
1184 if (!err) err = enlist_unique_header(rsp->headers, "Expires", buf);
1191 if (err || (NULL == (rsp->head = list_to_text(rsp->headers))))
1193 free_http_response(rsp);
1194 return cgi_error_memory();
1196 rsp->head_length = strlen(rsp->head);
1203 /*********************************************************************
1205 * Function : alloc_http_response
1207 * Description : Allocates a new http_response structure.
1211 * Returns : pointer to a new http_response, or NULL.
1213 *********************************************************************/
1214 struct http_response *alloc_http_response(void)
1216 return (struct http_response *) zalloc(sizeof(struct http_response));
1221 /*********************************************************************
1223 * Function : free_http_response
1225 * Description : Free the memory occupied by an http_response
1226 * and its depandant structures.
1229 * 1 : rsp = pointer to http_response to be freed
1233 *********************************************************************/
1234 void free_http_response(struct http_response *rsp)
1237 * Must special case cgi_error_memory_response, which is never freed.
1239 if (rsp && (rsp != cgi_error_memory_response))
1244 destroy_list(rsp->headers);
1251 /*********************************************************************
1253 * Function : template_load
1255 * Description : CGI support function that loads a given HTML
1256 * template from the confdir, ignoring comment
1257 * lines and following #include statements up to
1261 * 1 : csp = Current client state (buffers, headers, etc...)
1262 * 2 : template_ptr = Destination for pointer to loaded
1264 * 3 : template = name of the HTML template to be used
1265 * 4 : recursive = Flag set if this function calls itself
1266 * following an #include statament
1268 * Returns : JB_ERR_OK on success
1269 * JB_ERR_MEMORY on out-of-memory error.
1270 * JB_ERR_FILE if the template file cannot be read
1272 *********************************************************************/
1273 jb_err template_load(struct client_state *csp, char **template_ptr,
1274 const char *templatename, int recursive)
1277 char *templates_dir_path;
1280 char *included_module;
1283 char buf[BUFFER_SIZE];
1286 assert(template_ptr);
1287 assert(templatename);
1289 *template_ptr = NULL;
1291 /* Validate template name. Paranoia. */
1292 for (p = templatename; *p != 0; p++)
1294 if ( ((*p < 'a') || (*p > 'z'))
1295 && ((*p < 'A') || (*p > 'Z'))
1296 && ((*p < '0') || (*p > '9'))
1300 /* Illegal character */
1305 /* Generate full path */
1307 templates_dir_path = make_path(csp->config->confdir, "templates");
1308 if (templates_dir_path == NULL)
1310 return JB_ERR_MEMORY;
1313 full_path = make_path(templates_dir_path, templatename);
1314 free(templates_dir_path);
1315 if (full_path == NULL)
1317 return JB_ERR_MEMORY;
1320 /* Allocate buffer */
1322 file_buffer = strdup("");
1323 if (file_buffer == NULL)
1326 return JB_ERR_MEMORY;
1329 /* Open template file */
1331 if (NULL == (fp = fopen(full_path, "r")))
1333 log_error(LOG_LEVEL_ERROR, "Cannot open template file %s: %E", full_path);
1341 * Read the file, ignoring comments, and honoring #include
1342 * statements, unless we're already called recursively.
1344 * FIXME: The comment handling could break with lines >BUFFER_SIZE long.
1345 * This is unlikely in practise.
1347 while (fgets(buf, BUFFER_SIZE, fp))
1349 if (!recursive && !strncmp(buf, "#include ", 9))
1351 if (JB_ERR_OK != (err = template_load(csp, &included_module, chomp(buf + 9), 1)))
1358 if (string_join(&file_buffer, included_module))
1361 return JB_ERR_MEMORY;
1367 /* skip lines starting with '#' */
1373 if (string_append(&file_buffer, buf))
1376 return JB_ERR_MEMORY;
1381 *template_ptr = file_buffer;
1387 /*********************************************************************
1389 * Function : template_fill
1391 * Description : CGI support function that fills in a pre-loaded
1392 * HTML template by replacing @name@ with value using
1393 * pcrs, for each item in the output map.
1395 * Note that a leading '$' charachter in the export map's
1396 * values will be stripped and toggle on backreference
1400 * 1 : template_ptr = IN: Template to be filled out.
1402 * OUT: Filled out template.
1403 * Caller must free().
1404 * 2 : exports = map with fill in symbol -> name pairs
1406 * Returns : JB_ERR_OK on success
1407 * JB_ERR_MEMORY on out-of-memory error
1409 *********************************************************************/
1410 jb_err template_fill(char **template_ptr, const struct map *exports)
1412 struct map_entry *m;
1414 char buf[BUFFER_SIZE];
1415 char *tmp_out_buffer;
1421 assert(template_ptr);
1422 assert(*template_ptr);
1425 file_buffer = *template_ptr;
1426 size = strlen(file_buffer) + 1;
1429 * Assemble pcrs joblist from exports map
1431 for (m = exports->first; m != NULL; m = m->next)
1433 if (*m->name == '$')
1436 * First character of name is '$', so remove this flag
1437 * character and allow backreferences ($1 etc) in the
1438 * "replace with" text.
1440 snprintf(buf, BUFFER_SIZE, "%s", m->name + 1);
1446 * Treat the "replace with" text as a literal string -
1447 * no quoting needed, no backreferences allowed.
1448 * ("Trivial" ['T'] flag).
1452 /* Enclose name in @@ */
1453 snprintf(buf, BUFFER_SIZE, "@%s@", m->name);
1457 log_error(LOG_LEVEL_CGI, "Substituting: s/%s/%s/%s", buf, m->value, flags);
1459 /* Make and run job. */
1460 job = pcrs_compile(buf, m->value, flags, &error);
1463 if (error == PCRS_ERR_NOMEM)
1466 *template_ptr = NULL;
1467 return JB_ERR_MEMORY;
1471 log_error(LOG_LEVEL_ERROR, "Error compiling template fill job %s: %d", m->name, error);
1472 /* Hope it wasn't important and silently ignore the invalid job */
1477 pcrs_execute(job, file_buffer, size, &tmp_out_buffer, &size);
1480 if (NULL == tmp_out_buffer)
1482 *template_ptr = NULL;
1483 return JB_ERR_MEMORY;
1485 file_buffer = tmp_out_buffer;
1492 *template_ptr = file_buffer;
1497 /*********************************************************************
1499 * Function : template_fill_for_cgi
1501 * Description : CGI support function that loads a HTML template
1502 * and fills it in. Handles file-not-found errors
1503 * by sending a HTML error message. For convenience,
1504 * this function also frees the passed "exports" map.
1507 * 1 : csp = Client state
1508 * 2 : templatename = name of the HTML template to be used
1509 * 3 : exports = map with fill in symbol -> name pairs.
1510 * Will be freed by this function.
1512 * Returns : JB_ERR_OK on success
1513 * JB_ERR_MEMORY on out-of-memory error
1515 *********************************************************************/
1516 jb_err template_fill_for_cgi(struct client_state *csp,
1517 const char *templatename,
1518 struct map *exports,
1519 struct http_response *rsp)
1524 assert(templatename);
1528 err = template_load(csp, &rsp->body, templatename, 0);
1529 if (err == JB_ERR_FILE)
1532 return cgi_error_no_template(csp, rsp, templatename);
1537 return err; /* JB_ERR_MEMORY */
1539 err = template_fill(&rsp->body, exports);
1545 /*********************************************************************
1547 * Function : default_exports
1549 * Description : returns a struct map list that contains exports
1550 * which are common to all CGI functions.
1553 * 1 : csp = Current client state (buffers, headers, etc...)
1554 * 2 : caller = name of CGI who calls us and which should
1555 * be excluded from the generated menu. May be
1557 * Returns : NULL if no memory, else a new map. Caller frees.
1559 *********************************************************************/
1560 struct map *default_exports(const struct client_state *csp, const char *caller)
1564 struct map * exports;
1565 int local_help_exists = 0;
1569 exports = new_map();
1570 if (exports == NULL)
1575 err = map(exports, "version", 1, html_encode(VERSION), 0);
1576 if (!err) err = map(exports, "my-ip-address", 1, html_encode(csp->my_ip_addr_str ? csp->my_ip_addr_str : "unknown"), 0);
1577 if (!err) err = map(exports, "my-hostname", 1, html_encode(csp->my_hostname ? csp->my_hostname : "unknown"), 0);
1578 if (!err) err = map(exports, "homepage", 1, html_encode(HOME_PAGE_URL), 0);
1579 if (!err) err = map(exports, "default-cgi", 1, html_encode(CGI_PREFIX), 0);
1580 if (!err) err = map(exports, "menu", 1, make_menu(caller), 0);
1581 if (!err) err = map(exports, "code-status", 1, CODE_STATUS, 1);
1582 if (!err) err = map_conditional(exports, "enabled-display", g_bToggleIJB);
1584 snprintf(buf, 20, "%d", csp->config->hport);
1585 if (!err) err = map(exports, "my-port", 1, buf, 1);
1587 if(!strcmp(CODE_STATUS, "stable"))
1589 if (!err) err = map_block_killer(exports, "unstable");
1592 if (csp->config->admin_address != NULL)
1594 if (!err) err = map(exports, "admin-address", 1, html_encode(csp->config->admin_address), 0);
1595 local_help_exists = 1;
1599 if (!err) err = map_block_killer(exports, "have-adminaddr-info");
1602 if (csp->config->proxy_info_url != NULL)
1604 if (!err) err = map(exports, "proxy-info-url", 1, html_encode(csp->config->proxy_info_url), 0);
1605 local_help_exists = 1;
1609 if (!err) err = map_block_killer(exports, "have-proxy-info");
1612 if (local_help_exists == 0)
1614 if (!err) err = map_block_killer(exports, "have-help-info");
1627 /*********************************************************************
1629 * Function : map_block_killer
1631 * Description : Convenience function.
1632 * Adds a "killer" for the conditional HTML-template
1633 * block <name>, i.e. a substitution of the regex
1634 * "if-<name>-start.*if-<name>-end" to the given
1638 * 1 : exports = map to extend
1639 * 2 : name = name of conditional block
1641 * Returns : JB_ERR_OK on success
1642 * JB_ERR_MEMORY on out-of-memory error.
1644 *********************************************************************/
1645 jb_err map_block_killer(struct map *exports, const char *name)
1647 char buf[1000]; /* Will do, since the names are hardwired */
1651 assert(strlen(name) < 490);
1653 snprintf(buf, 1000, "if-%s-start.*if-%s-end", name, name);
1654 return map(exports, buf, 1, "", 1);
1658 /*********************************************************************
1660 * Function : map_block_keep
1662 * Description : Convenience function. Removes the markers used
1663 * by map-block-killer, to save a few bytes.
1664 * i.e. removes "@if-<name>-start@" and "@if-<name>-end@"
1667 * 1 : exports = map to extend
1668 * 2 : name = name of conditional block
1670 * Returns : JB_ERR_OK on success
1671 * JB_ERR_MEMORY on out-of-memory error.
1673 *********************************************************************/
1674 jb_err map_block_keep(struct map *exports, const char *name)
1677 char buf[500]; /* Will do, since the names are hardwired */
1681 assert(strlen(name) < 490);
1683 snprintf(buf, 500, "if-%s-start", name);
1684 err = map(exports, buf, 1, "", 1);
1691 snprintf(buf, 500, "if-%s-end", name);
1692 return map(exports, buf, 1, "", 1);
1696 /*********************************************************************
1698 * Function : map_conditional
1700 * Description : Convenience function.
1701 * Adds an "if-then-else" for the conditional HTML-template
1702 * block <name>, i.e. a substitution of the form:
1709 * The control structure and one of the alternatives
1713 * 1 : exports = map to extend
1714 * 2 : name = name of conditional block
1715 * 3 : choose_first = nonzero for first, zero for second.
1717 * Returns : JB_ERR_OK on success
1718 * JB_ERR_MEMORY on out-of-memory error.
1720 *********************************************************************/
1721 jb_err map_conditional(struct map *exports, const char *name, int choose_first)
1723 char buf[1000]; /* Will do, since the names are hardwired */
1728 assert(strlen(name) < 480);
1730 snprintf(buf, 1000, (choose_first
1731 ? "else-not-%s@.*@endif-%s"
1732 : "if-%s-then@.*@else-not-%s"),
1735 err = map(exports, buf, 1, "", 1);
1741 snprintf(buf, 1000, (choose_first ? "if-%s-then" : "endif-%s"), name);
1742 return map(exports, buf, 1, "", 1);
1746 /*********************************************************************
1748 * Function : make_menu
1750 * Description : Returns an HTML-formatted menu of the available
1751 * unhidden CGIs, excluding the one given in <self>.
1753 * Parameters : self = name of CGI to leave out, can be NULL
1755 * Returns : menu string, or NULL on out-of-memory error.
1757 *********************************************************************/
1758 char *make_menu(const char *self)
1760 const struct cgi_dispatcher *d;
1761 char *result = strdup("");
1765 self = "NO-SUCH-CGI!";
1768 /* List available unhidden CGI's and export as "other-cgis" */
1769 for (d = cgi_dispatchers; d->name; d++)
1771 if (d->description && strcmp(d->name, self))
1773 string_append(&result, "<li><a href=\"" CGI_PREFIX);
1774 string_append(&result, d->name);
1775 string_append(&result, "\">");
1776 string_append(&result, d->description);
1777 string_append(&result, "</a></li>");
1785 /*********************************************************************
1787 * Function : dump_map
1789 * Description : HTML-dump a map for debugging
1792 * 1 : the_map = map to dump
1794 * Returns : string with HTML
1796 *********************************************************************/
1797 char *dump_map(const struct map *the_map)
1799 struct map_entry *cur_entry;
1800 char *ret = strdup("");
1802 string_append(&ret, "<table>\n");
1804 for (cur_entry = the_map->first;
1805 (cur_entry != NULL) && (ret != NULL);
1806 cur_entry = cur_entry->next)
1808 string_append(&ret, "<tr><td><b>");
1809 string_join (&ret, html_encode(cur_entry->name));
1810 string_append(&ret, "</b></td><td>");
1811 string_join (&ret, html_encode(cur_entry->value));
1812 string_append(&ret, "</td></tr>\n");
1815 string_append(&ret, "</table>\n");