3 #define CGI_H_VERSION "$Id: cgi.h,v 1.29 2002/05/19 11:33:21 jongfoster Exp $"
4 /*********************************************************************
6 * File : $Source: /cvsroot/ijbswa/current/cgi.h,v $
8 * Purpose : Declares functions to intercept request, generate
9 * html or gif answers, and to compose HTTP resonses.
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 1.29 2002/05/19 11:33:21 jongfoster
42 * If a CGI error was not handled, and propogated back to
43 * dispatch_known_cgi(), then it was assumed to be "out of memory".
44 * This gave a very misleading error message.
46 * Now other errors will cause a simple message giving the error
47 * number and asking the user to report a bug.
50 * http://sourceforge.net/tracker/index.php?func=detail
51 * &aid=557905&group_id=11118&atid=111118
53 * Revision 1.28 2002/04/26 12:54:03 oes
54 * New function add_help_link
56 * Revision 1.27 2002/04/24 02:16:51 oes
57 * Moved get_char_param, get_string_param and get_number_param here from cgiedit.c
59 * Revision 1.26 2002/04/10 13:38:35 oes
60 * load_template signature changed
62 * Revision 1.25 2002/04/08 20:50:25 swa
65 * Revision 1.24 2002/03/26 22:29:54 swa
66 * we have a new homepage!
68 * Revision 1.23 2002/03/24 16:18:15 jongfoster
71 * Revision 1.22 2002/03/24 13:25:43 swa
72 * name change related issues
74 * Revision 1.21 2002/03/07 03:48:38 oes
75 * - Changed built-in images from GIF to PNG
76 * (with regard to Unisys patent issue)
77 * - Added a 4x4 pattern PNG which is less intrusive
78 * than the logo but also clearly marks the deleted banners
80 * Revision 1.20 2002/03/04 17:53:22 oes
81 * Fixed compiled warning
83 * Revision 1.19 2002/01/21 00:33:52 jongfoster
84 * Adding map_block_keep() to save a few bytes in the edit-actions-list HTML.
86 * Revision 1.18 2001/11/16 00:46:31 jongfoster
87 * Fixing compiler warnings
89 * Revision 1.17 2001/10/23 21:48:19 jongfoster
90 * Cleaning up error handling in CGI functions - they now send back
91 * a HTML error page and should never cause a FATAL error. (Fixes one
92 * potential source of "denial of service" attacks).
94 * CGI actions file editor that works and is actually useful.
96 * Ability to toggle Junkbuster remotely using a CGI call.
98 * You can turn off both the above features in the main configuration
99 * file, e.g. if you are running a multi-user proxy.
101 * Revision 1.16 2001/09/16 17:08:54 jongfoster
102 * Moving simple CGI functions from cgi.c to new file cgisimple.c
104 * Revision 1.15 2001/09/16 15:02:35 jongfoster
105 * Adding i.j.b/robots.txt.
106 * Inlining add_stats() since it's only ever called from one place.
108 * Revision 1.14 2001/09/16 11:38:02 jongfoster
109 * Splitting fill_template() into 2 functions:
110 * template_load() loads the file
111 * template_fill() performs the PCRS regexps.
112 * This is because the CGI edit interface has a "table row"
113 * template which is used many times in the page - this
114 * change means it's only loaded from disk once.
116 * Revision 1.13 2001/09/16 11:00:10 jongfoster
117 * New function alloc_http_response, for symmetry with free_http_response
119 * Revision 1.12 2001/09/13 23:31:25 jongfoster
120 * Moving image data to cgi.c rather than cgi.h.
122 * Revision 1.11 2001/08/05 16:06:20 jongfoster
123 * Modifiying "struct map" so that there are now separate header and
124 * "map_entry" structures. This means that functions which modify a
125 * map no longer need to return a pointer to the modified map.
126 * Also, it no longer reverses the order of the entries (which may be
127 * important with some advanced template substitutions).
129 * Revision 1.10 2001/08/01 21:19:22 jongfoster
130 * Moving file version information to a separate CGI page.
132 * Revision 1.9 2001/08/01 00:17:54 jongfoster
133 * Adding prototype for map_conditional
135 * Revision 1.8 2001/07/30 22:08:36 jongfoster
136 * Tidying up #defines:
137 * - All feature #defines are now of the form FEATURE_xxx
138 * - Permanently turned off WIN_GUI_EDIT
139 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
141 * Revision 1.7 2001/07/29 18:43:08 jongfoster
142 * Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to
145 * Revision 1.6 2001/06/29 21:45:41 oes
146 * Indentation, CRLF->LF, Tab-> Space
148 * Revision 1.5 2001/06/29 13:22:44 oes
150 * - Added new functions: default_exports(), make_menu(),
151 * error_response() etc, ranamed others and changed
152 * param and return types.
153 * - Removed HTTP/HTML snipplets
154 * - Removed logentry from cancelled commit
156 * Revision 1.4 2001/06/09 10:50:58 jongfoster
157 * Changing "show URL info" handler to new style.
158 * Adding "extern" to some function prototypes.
160 * Revision 1.3 2001/06/03 19:12:16 oes
161 * introduced new cgi handling
163 * No revisions before 1.3
165 **********************************************************************/
175 * Main dispatch function
177 extern struct http_response *dispatch_cgi(struct client_state *csp);
179 /* Not exactly a CGI */
180 extern struct http_response * error_response(struct client_state *csp,
181 const char *templatename,
185 * CGI support functions
187 extern struct http_response * alloc_http_response(void);
188 extern void free_http_response(struct http_response *rsp);
190 extern struct http_response *finish_http_response(struct http_response *rsp);
192 extern struct map * default_exports(const struct client_state *csp, const char *caller);
194 extern jb_err map_block_killer (struct map *exports, const char *name);
195 extern jb_err map_block_keep (struct map *exports, const char *name);
196 extern jb_err map_conditional (struct map *exports, const char *name, int choose_first);
198 extern jb_err template_load(struct client_state *csp, char ** template_ptr,
199 const char *templatename, int recursive);
200 extern jb_err template_fill(char ** template_ptr, const struct map *exports);
201 extern jb_err template_fill_for_cgi(struct client_state *csp,
202 const char *templatename,
204 struct http_response *rsp);
206 extern void cgi_init_error_messages(void);
207 extern struct http_response *cgi_error_memory(void);
208 extern jb_err cgi_error_no_template(struct client_state *csp,
209 struct http_response *rsp,
210 const char *template_name);
211 extern jb_err cgi_error_bad_param(struct client_state *csp,
212 struct http_response *rsp);
213 jb_err cgi_error_unknown(struct client_state *csp,
214 struct http_response *rsp,
215 jb_err error_to_report);
217 extern jb_err get_number_param(struct client_state *csp,
218 const struct map *parameters,
221 extern jb_err get_string_param(const struct map *parameters,
222 const char *param_name,
223 const char **pparam);
224 extern char get_char_param(const struct map *parameters,
225 const char *param_name);
230 extern void get_http_time(int time_offset, char * buf);
231 extern char *add_help_link(const char *item, struct configuration_spec *config);
232 extern char *make_menu(const char *self);
233 extern char *dump_map(const struct map *the_map);
236 * Ad replacement images
238 extern const char image_pattern_data[];
239 extern const size_t image_pattern_length;
240 extern const char image_blank_data[];
241 extern const size_t image_blank_length;
243 /* Revision control strings from this header and associated .c file */
244 extern const char cgi_rcs[];
245 extern const char cgi_h_rcs[];
251 #endif /* ndef CGI_H_INCLUDED */