X-Git-Url: http://www.privoxy.org/gitweb/files-in-use.jpg?a=blobdiff_plain;f=cgi.c;h=03ca2fa8515a0739b4b9e94e95ff5e585d4a1bb5;hb=b8dda56b9efb1811629b1aedda6f332f22e966a7;hp=7ad60170ec1aee5bd2c7cf3b8913a60526af209c;hpb=fc38802c68b57157c6e3c763d15dbd9f8e85e170;p=privoxy.git diff --git a/cgi.c b/cgi.c index 7ad60170..03ca2fa8 100644 --- a/cgi.c +++ b/cgi.c @@ -1,4 +1,4 @@ -const char cgi_rcs[] = "$Id: cgi.c,v 1.34 2001/10/18 22:22:09 david__schmidt Exp $"; +const char cgi_rcs[] = "$Id: cgi.c,v 1.58 2002/03/29 03:33:13 david__schmidt Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/cgi.c,v $ @@ -12,7 +12,7 @@ const char cgi_rcs[] = "$Id: cgi.c,v 1.34 2001/10/18 22:22:09 david__schmidt Exp * * * Copyright : Written by and Copyright (C) 2001 the SourceForge - * IJBSWA team. http://ijbswa.sourceforge.net + * Privoxy team. http://www.privoxy.org/ * * Based on the Internet Junkbuster originally written * by and Copyright (C) 1997 Anonymous Coders and @@ -38,10 +38,115 @@ const char cgi_rcs[] = "$Id: cgi.c,v 1.34 2001/10/18 22:22:09 david__schmidt Exp * * Revisions : * $Log: cgi.c,v $ + * Revision 1.58 2002/03/29 03:33:13 david__schmidt + * Fix Mac OSX compiler warnings + * + * Revision 1.57 2002/03/26 22:29:54 swa + * we have a new homepage! + * + * Revision 1.56 2002/03/24 17:50:46 jongfoster + * Fixing compile error if actions file editor disabled + * + * Revision 1.55 2002/03/24 16:55:06 oes + * Making GIF checkerboard transparent + * + * Revision 1.54 2002/03/24 16:18:15 jongfoster + * Removing old logo + * + * Revision 1.53 2002/03/24 16:06:00 oes + * Correct transparency for checkerboard PNG. Thanks, Magnus! + * + * Revision 1.52 2002/03/24 15:23:33 jongfoster + * Name changes + * + * Revision 1.51 2002/03/24 13:25:43 swa + * name change related issues + * + * Revision 1.50 2002/03/16 23:54:06 jongfoster + * Adding graceful termination feature, to help look for memory leaks. + * If you enable this (which, by design, has to be done by hand + * editing config.h) and then go to http://i.j.b/die, then the program + * will exit cleanly after the *next* request. It should free all the + * memory that was used. + * + * Revision 1.49 2002/03/13 00:27:04 jongfoster + * Killing warnings + * + * Revision 1.48 2002/03/08 17:47:07 jongfoster + * Adding comments + * + * Revision 1.47 2002/03/08 16:41:33 oes + * Added GIF images again + * + * Revision 1.46 2002/03/07 03:48:38 oes + * - Changed built-in images from GIF to PNG + * (with regard to Unisys patent issue) + * - Added a 4x4 pattern PNG which is less intrusive + * than the logo but also clearly marks the deleted banners + * + * Revision 1.45 2002/03/06 22:54:35 jongfoster + * Automated function-comment nitpicking. + * + * Revision 1.44 2002/03/05 22:43:45 david__schmidt + * - Better error reporting on OS/2 + * - Fix double-slash comment (oops) + * + * Revision 1.43 2002/03/05 21:33:45 david__schmidt + * - Re-enable OS/2 building after new parms were added + * - Fix false out of memory report when resolving CGI templates when no IP + * address is available of failed attempt (a la no such domain) + * + * Revision 1.42 2002/01/21 00:33:20 jongfoster + * Replacing strsav() with the safer string_append() or string_join(). + * Adding map_block_keep() to save a few bytes in the edit-actions-list HTML. + * Adding missing html_encode() to error message generators. + * Adding edit-actions-section-swap and many "shortcuts" to the list of CGIs. + * + * Revision 1.41 2002/01/17 20:56:22 jongfoster + * Replacing hard references to the URL of the config interface + * with #defines from project.h + * + * Revision 1.40 2002/01/09 14:26:46 oes + * Added support for thread-safe gmtime_r call. + * + * Revision 1.39 2001/11/16 00:48:13 jongfoster + * Fixing a compiler warning + * + * Revision 1.38 2001/11/13 00:31:21 jongfoster + * - Adding new CGIs for use by non-JavaScript browsers: + * edit-actions-url-form + * edit-actions-add-url-form + * edit-actions-remove-url-form + * - Fixing make_menu()'s HTML generation - it now quotes the href parameter. + * - Fixing || bug. + * + * Revision 1.37 2001/11/01 14:28:47 david__schmidt + * Show enablement/disablement status in almost all templates. + * There is a little trickiness here: apparent recursive resolution of + * @if-enabled-then@ caused the toggle template to show status out-of-phase with + * the actual enablement status. So a similar construct, + * @if-enabled-display-then@, is used to resolve the status display on non-'toggle' + * templates. + * + * Revision 1.36 2001/10/26 17:33:27 oes + * marginal bugfix + * + * Revision 1.35 2001/10/23 21:48:19 jongfoster + * Cleaning up error handling in CGI functions - they now send back + * a HTML error page and should never cause a FATAL error. (Fixes one + * potential source of "denial of service" attacks). + * + * CGI actions file editor that works and is actually useful. + * + * Ability to toggle JunkBuster remotely using a CGI call. + * + * You can turn off both the above features in the main configuration + * file, e.g. if you are running a multi-user proxy. + * * Revision 1.34 2001/10/18 22:22:09 david__schmidt * Only show "Local support" on templates conditionally: * - if either 'admin-address' or 'proxy-info-url' are uncommented in config - * - if not, no Local support section appears are removed automatically + * - if not, no Local support section appears * * Revision 1.33 2001/10/14 22:28:41 jongfoster * Fixing stupid typo. @@ -250,13 +355,26 @@ const char cgi_rcs[] = "$Id: cgi.c,v 1.34 2001/10/18 22:22:09 david__schmidt Exp #ifdef FEATURE_CGI_EDIT_ACTIONS #include "cgiedit.h" #endif /* def FEATURE_CGI_EDIT_ACTIONS */ +#include "loadcfg.h" +/* loadcfg.h is for g_bToggleIJB only */ const char cgi_h_rcs[] = CGI_H_VERSION; +/* + * List of CGI functions: name, handler, description + * Note: Do NOT use single quotes in the description; + * this will break the dynamic "blocked" template! + */ static const struct cgi_dispatcher cgi_dispatchers[] = { { "", cgi_default, - "Junkbuster main page" }, + "Privoxy main page" }, +#ifdef FEATURE_GRACEFUL_TERMINATION + { "die", + cgi_die, + "Shut down - Do not deploy this build in a production environment, " + "this is a one click Denial Of Service attack!!!" }, +#endif { "show-status", cgi_show_status, "Show information about the current configuration" }, @@ -265,20 +383,40 @@ static const struct cgi_dispatcher cgi_dispatchers[] = { "Show the source code version numbers" }, { "show-request", cgi_show_request, - "Show the client's request headers." }, + "Show the request headers." }, { "show-url-info", cgi_show_url_info, "Show which actions apply to a URL and why" }, #ifdef FEATURE_CGI_EDIT_ACTIONS { "toggle", cgi_toggle, - "Toggle JunkBuster on or off" }, + "Toggle Privoxy on or off" }, { "edit-actions", cgi_edit_actions, "Edit the actions list" }, -#endif /* def FEATURE_CGI_EDIT_ACTIONS */ -#ifdef FEATURE_CGI_EDIT_ACTIONS + + { "eaa", /* Shortcut for edit-actions-add-url-form */ + cgi_edit_actions_add_url_form, + NULL }, + { "eau", /* Shortcut for edit-actions-url-form */ + cgi_edit_actions_url_form, + NULL }, + { "ear", /* Shortcut for edit-actions-remove-url-form */ + cgi_edit_actions_remove_url_form, + NULL }, + { "eas", /* Shortcut for edit-actions-for-url */ + cgi_edit_actions_for_url, + NULL }, + { "easa", /* Shortcut for edit-actions-section-add */ + cgi_edit_actions_section_add, + NULL }, + { "easr", /* Shortcut for edit-actions-section-remove */ + cgi_edit_actions_section_remove, + NULL }, + { "eass", /* Shortcut for edit-actions-section-swap */ + cgi_edit_actions_section_swap, + NULL }, { "edit-actions-for-url", cgi_edit_actions_for_url, NULL /* Edit the actions for (a) specified URL(s) */ }, @@ -291,25 +429,43 @@ static const struct cgi_dispatcher cgi_dispatchers[] = { { "edit-actions-url", cgi_edit_actions_url, NULL /* Change a URL pattern in the actionsfile */ }, + { "edit-actions-url-form", + cgi_edit_actions_url_form, + NULL /* Form to change a URL pattern in the actionsfile */ }, { "edit-actions-add-url", cgi_edit_actions_add_url, NULL /* Add a URL pattern to the actionsfile */ }, + { "edit-actions-add-url-form", + cgi_edit_actions_add_url_form, + NULL /* Form to add a URL pattern to the actionsfile */ }, { "edit-actions-remove-url", cgi_edit_actions_remove_url, - NULL /* Add a URL pattern to the actionsfile */ }, - { "edit-actions-section-remove", - cgi_edit_actions_section_remove, - NULL /* Remove a section from the actionsfile */ }, + NULL /* Remove a URL pattern from the actionsfile */ }, + { "edit-actions-remove-url-form", + cgi_edit_actions_remove_url_form, + NULL /* Form to remove a URL pattern from the actionsfile */ }, { "edit-actions-section-add", cgi_edit_actions_section_add, NULL /* Remove a section from the actionsfile */ }, + { "edit-actions-section-remove", + cgi_edit_actions_section_remove, + NULL /* Remove a section from the actionsfile */ }, + { "edit-actions-section-swap", + cgi_edit_actions_section_swap, + NULL /* Swap two sections in the actionsfile */ }, #endif /* def FEATURE_CGI_EDIT_ACTIONS */ { "robots.txt", cgi_robots_txt, NULL /* Sends a robots.txt file to tell robots to go away. */ }, { "send-banner", cgi_send_banner, - NULL /* Send the transparent or \"Junkbuster\" gif */ }, + NULL /* Send a built-in image */ }, + { "send-stylesheet", + cgi_send_stylesheet, + NULL /* Send templates/cgi-style.css */ }, + { "t", + cgi_transparent_image, + NULL /* Send a transparent image (short name) */ }, { NULL, /* NULL Indicates end of list and default page */ cgi_error_404, NULL /* Unknown CGI page */ } @@ -317,46 +473,79 @@ static const struct cgi_dispatcher cgi_dispatchers[] = { /* - * Some images + * Bulit-in images for ad replacement * - * Hint: You can encode your own GIFs like this: - * perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o,", unpack("C", $c)); }' + * Hint: You can encode your own images like this: + * cat your-image | perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o", unpack("C", $c)); }' */ -const char image_junkbuster_gif_data[] = - "GIF89aD\000\013\000\360\000\000\000\000\000\377\377\377!" - "\371\004\001\000\000\001\000,\000\000\000\000D\000\013\000" - "\000\002a\214\217\251\313\355\277\000\200G&K\025\316hC\037" - "\200\234\230Y\2309\235S\230\266\206\372J\253<\3131\253\271" - "\270\215\342\254\013\203\371\202\264\334P\207\332\020o\266" - "N\215I\332=\211\312\3513\266:\026AK)\364\370\365aobr\305" - "\372\003S\275\274k2\354\254z\347?\335\274x\306^9\374\276" - "\037Q\000\000;"; +#ifdef FEATURE_NO_GIFS -const int image_junkbuster_gif_length = sizeof(image_junkbuster_gif_data) - 1; +/* + * Checkerboard pattern, as a PNG. + */ +const char image_pattern_data[] = + "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104" + "\122\000\000\000\004\000\000\000\004\010\002\000\000\000\046" + "\223\011\051\000\000\000\006\142\113\107\104\000\310\000\310" + "\000\310\052\045\225\037\000\000\000\032\111\104\101\124\170" + "\332\143\070\161\342\304\377\377\377\041\044\003\234\165\342" + "\304\011\006\234\062\000\125\200\052\251\125\174\360\223\000" + "\000\000\000\111\105\116\104\256\102\140\202"; +/* + * 1x1 transparant PNG. + */ +const char image_blank_data[] = + "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104\122" + "\000\000\000\004\000\000\000\004\010\006\000\000\000\251\361\236" + "\176\000\000\000\007\164\111\115\105\007\322\003\013\020\073\070" + "\013\025\036\203\000\000\000\011\160\110\131\163\000\000\013\022" + "\000\000\013\022\001\322\335\176\374\000\000\000\004\147\101\115" + "\101\000\000\261\217\013\374\141\005\000\000\000\033\111\104\101" + "\124\170\332\143\070\161\342\304\207\377\377\377\347\302\150\006" + "\144\016\210\146\040\250\002\000\042\305\065\221\270\027\131\110" + "\000\000\000\000\111\105\116\104\256\102\140\202"; +#else -const char image_blank_gif_data[] = +/* + * Checkerboard pattern, as a GIF. + */ +const char image_pattern_data[] = + "\107\111\106\070\071\141\004\000\004\000\200\000\000\310\310" + "\310\377\377\377\041\376\016\111\040\167\141\163\040\141\040" + "\142\141\156\156\145\162\000\041\371\004\001\012\000\001\000" + "\054\000\000\000\000\004\000\004\000\000\002\005\104\174\147" + "\270\005\000\073"; + +/* + * 1x1 transparant GIF. + */ +const char image_blank_data[] = "GIF89a\001\000\001\000\200\000\000\377\377\377\000\000" "\000!\371\004\001\000\000\000\000,\000\000\000\000\001" "\000\001\000\000\002\002D\001\000;"; +#endif -const int image_blank_gif_length = sizeof(image_blank_gif_data) - 1; +const size_t image_pattern_length = sizeof(image_pattern_data) - 1; +const size_t image_blank_length = sizeof(image_blank_data) - 1; static struct http_response cgi_error_memory_response[1]; - static struct http_response *dispatch_known_cgi(struct client_state * csp, const char * path); +static struct map *parse_cgi_parameters(char *argstring); /********************************************************************* * * Function : dispatch_cgi * - * Description : Checks if a request URL has either the magical hostname - * i.j.b or matches HOME_PAGE_URL/config/. If so, it passes + * Description : Checks if a request URL has either the magical + * hostname CGI_SITE_1_HOST (usully http://i.j.b/) or + * matches CGI_SITE_2_HOST CGI_SITE_2_PATH (usually + * http://ijbswa.sourceforge.net/config). If so, it passes * the (rest of the) path onto dispatch_known_cgi, which * calls the relevant CGI handler function. * @@ -375,27 +564,34 @@ struct http_response *dispatch_cgi(struct client_state *csp) * Should we intercept ? */ - /* Either the host matches CGI_PREFIX_HOST ..*/ - if ( (0 == strcmpic(host, CGI_PREFIX_HOST)) + /* Note: "example.com" and "example.com." are equivalent hostnames. */ + + /* Either the host matches CGI_SITE_1_HOST ..*/ + if ( ( (0 == strcmpic(host, CGI_SITE_1_HOST)) + || (0 == strcmpic(host, CGI_SITE_1_HOST "."))) && (path[0] == '/') ) { /* ..then the path will all be for us. Remove leading '/' */ path++; } - /* Or it's the host part HOME_PAGE_URL, and the path /config/ */ - else if ( (0 == strcmpic(host, HOME_PAGE_URL + 7 )) - && (0 == strncmpic(path,"/config", 7)) ) + /* Or it's the host part CGI_SITE_2_HOST, and the path CGI_SITE_2_PATH */ + else if ( ( (0 == strcmpic(host, CGI_SITE_2_HOST )) + || (0 == strcmpic(host, CGI_SITE_2_HOST ".")) ) + && (0 == strncmpic(path, CGI_SITE_2_PATH, strlen(CGI_SITE_2_PATH))) ) { - /* take everything following "/config" */ - path += 7; + /* take everything following CGI_SITE_2_PATH */ + path += strlen(CGI_SITE_2_PATH); if (*path == '/') { - /* skip the forward slash after "/config" */ + /* skip the forward slash after CGI_SITE_2_PATH */ path++; } else if (*path != '\0') { - /* wierdness: URL is /configXXX, where XXX is some string */ + /* + * wierdness: URL is /configXXX, where XXX is some string + * Do *NOT* intercept. + */ return NULL; } } @@ -484,7 +680,8 @@ static struct http_response *dispatch_known_cgi(struct client_state * csp, csp->ip_addr_str, csp->http->cmd); /* Find and start the right CGI function*/ - for (d = cgi_dispatchers; FOREVER; d++) + d = cgi_dispatchers; + for (;;) { if ((d->name == NULL) || (strcmp(path_copy, d->name) == 0)) { @@ -507,6 +704,7 @@ static struct http_response *dispatch_known_cgi(struct client_state * csp, return cgi_error_memory(); } } + d++; } } @@ -590,13 +788,21 @@ struct http_response *error_response(struct client_state *csp, return cgi_error_memory(); } - err = map(exports, "host-html", 1, html_encode(csp->http->host), 0) - || map(exports, "hostport", 1, csp->http->hostport, 1) - || map(exports, "hostport-html", 1, html_encode(csp->http->hostport), 0) - || map(exports, "path", 1, csp->http->path, 1) - || map(exports, "path-html", 1, html_encode(csp->http->path), 0) - || map(exports, "error", 1, safe_strerror(sys_err), 0) - || map(exports, "host-ip", 1, csp->http->host_ip_addr_str, 1); + err = map(exports, "host", 1, html_encode(csp->http->host), 0); + if (!err) err = map(exports, "hostport", 1, html_encode(csp->http->hostport), 0); + if (!err) err = map(exports, "path", 1, html_encode(csp->http->path), 0); + if (!err) err = map(exports, "error", 1, html_encode_and_free_original(safe_strerror(sys_err)), 0); + if (!err) err = map(exports, "protocol", 1, csp->http->ssl ? "https://" : "http://", 1); + if (!err) + { + err = map(exports, "host-ip", 1, html_encode(csp->http->host_ip_addr_str), 0); + if (err) + { + /* Some failures, like "404 no such domain", don't have an IP address. */ + err = map(exports, "host-ip", 1, html_encode(csp->http->host), 0); + } + } + if (err) { @@ -653,15 +859,15 @@ void cgi_init_error_messages(void) { memset(cgi_error_memory_response, '\0', sizeof(*cgi_error_memory_response)); cgi_error_memory_response->head = - "HTTP/1.0 500 Internal JunkBuster Proxy Error\r\n" + "HTTP/1.0 500 Internal Privoxy Error\r\n" "Content-Type: text/html\r\n" "\r\n"; cgi_error_memory_response->body = "\r\n" - "
JunkBuster ran out of memory whilst processing your request.
\r\n" + "Privoxy ran out of memory while processing your request.
\r\n" "Please contact your proxy administrator, or try again later
\r\n" "\r\n" "\r\n"; @@ -681,9 +887,9 @@ void cgi_init_error_messages(void) * Returns a statically-allocated error response. * * Parameters : - * 1 : csp = Current client state (buffers, headers, etc...) - * 2 : rsp = http_response data structure for output - * 3 : template_name = Name of template that could not + * 1 : csp = Current client state (buffers, headers, etc...) + * 2 : rsp = http_response data structure for output + * 3 : template_name = Name of template that could not * be loaded. * * Returns : JB_ERR_OK on success @@ -709,9 +915,9 @@ struct http_response *cgi_error_memory(void) * parameters. * * Parameters : - * 1 : csp = Current client state (buffers, headers, etc...) - * 2 : rsp = http_response data structure for output - * 3 : template_name = Name of template that could not + * 1 : csp = Current client state (buffers, headers, etc...) + * 2 : rsp = http_response data structure for output + * 3 : template_name = Name of template that could not * be loaded. * * Returns : JB_ERR_OK on success @@ -723,13 +929,13 @@ jb_err cgi_error_no_template(struct client_state *csp, const char *template_name) { static const char status[] = - "500 Internal JunkBuster Proxy Error"; + "500 Internal Privoxy Error"; static const char body_prefix[] = "\r\n" - "JunkBuster encountered an error whilst processing your request:
\r\n" + "Privoxy encountered an error while processing your request:
\r\n" "Could not load template file ";
static const char body_suffix[] =
"
If you are the proxy administrator, please put the required file "
"in the (confdir)/templates
directory. The "
"location of the (confdir)
directory "
- "is specified in the main JunkBuster config
"
- "file. (It's typically the JunkBuster install directory"
+ "is specified in the main Privoxy config
"
+ "file. (It's typically the Privoxy install directory"
#ifndef _WIN32
- ", or /etc/junkbuster/
"
+ ", or /etc/privoxy/
"
#endif /* ndef _WIN32 */
").
"); - ret = strsav(ret, cur_entry->name); - ret = strsav(ret, " | "); - ret = strsav(ret, cur_entry->value); - ret = strsav(ret, " |
"); + string_join (&ret, html_encode(cur_entry->name)); + string_append(&ret, " | "); + string_join (&ret, html_encode(cur_entry->value)); + string_append(&ret, " |