1 const char killpopup_rcs[] = "$Id: killpopup.c,v 1.16 2002/03/26 22:29:55 swa Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/killpopup.c,v $
6 * Purpose : Handles the filtering of popups.
8 * Copyright : Written by and Copyright (C) 2001 the SourceForge
9 * Privoxy team. http://www.privoxy.org/
11 * Based on the Internet Junkbuster originally written
12 * by and Copyright (C) 1997 Anonymous Coders and
13 * Junkbusters Corporation. http://www.junkbusters.com
15 * This program is free software; you can redistribute it
16 * and/or modify it under the terms of the GNU General
17 * Public License as published by the Free Software
18 * Foundation; either version 2 of the License, or (at
19 * your option) any later version.
21 * This program is distributed in the hope that it will
22 * be useful, but WITHOUT ANY WARRANTY; without even the
23 * implied warranty of MERCHANTABILITY or FITNESS FOR A
24 * PARTICULAR PURPOSE. See the GNU General Public
25 * License for more details.
27 * The GNU General Public License should be included with
28 * this file. If not, you can view it at
29 * http://www.gnu.org/copyleft/gpl.html
30 * or write to the Free Software Foundation, Inc., 59
31 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 * $Log: killpopup.c,v $
35 * Revision 1.16 2002/03/26 22:29:55 swa
36 * we have a new homepage!
38 * Revision 1.15 2002/03/24 13:25:43 swa
39 * name change related issues
41 * Revision 1.14 2002/03/07 03:46:53 oes
42 * Fixed compiler warnings etc
44 * Revision 1.13 2001/11/13 00:16:40 jongfoster
45 * Replacing references to malloc.h with the standard stdlib.h
46 * (See ANSI or K&R 2nd Ed)
48 * Revision 1.12 2001/10/25 03:40:48 david__schmidt
49 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
50 * threads to call select() simultaneously. So, it's time to do a real, live,
51 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
52 * (native). Both versions will work, but using __OS2__ offers multi-threading.
54 * Revision 1.11 2001/10/07 15:42:41 oes
55 * filter_popups now gets a csp pointer so it can raise the new
56 * CSP_FLAG_MODIFIED flag.
58 * Revision 1.10 2001/09/22 16:34:44 jongfoster
59 * Removing unneeded #includes
61 * Revision 1.9 2001/07/31 14:44:22 oes
62 * Deleted unused size parameter from filter_popups()
64 * Revision 1.8 2001/07/30 22:08:36 jongfoster
65 * Tidying up #defines:
66 * - All feature #defines are now of the form FEATURE_xxx
67 * - Permanently turned off WIN_GUI_EDIT
68 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
70 * Revision 1.7 2001/07/20 19:29:25 haroon
71 * - In v1.5 forgot to add that I implemented LOG_LEVEL_POPUPS in errlog.c,
72 * errlog.h and killpopup.c. In that case, it is superfluous to have define for
73 * POPUP_VERBOSE, so I removed the defines and logging is now done
74 * via log_error(LOG_LEVEL_POPUPS, ....)
76 * Revision 1.6 2001/07/19 19:11:35 haroon
77 * - Implemented Guy's idea of replacing window.open( with 1;''.concat(
78 * - Implemented Guy's idea of replacing .resizeTo( with .scrollTo(
80 * Revision 1.5 2001/07/18 15:02:52 haroon
81 * improved nuking of window.open
83 * Revision 1.4 2001/06/29 13:29:55 oes
84 * Added FIXMEs (and didn't repair, hehe)
86 * Revision 1.3 2001/05/22 18:56:28 oes
89 * Revision 1.2 2001/05/20 01:21:20 jongfoster
90 * Version 2.9.4 checkin.
91 * - Merged popupfile and cookiefile, and added control over PCRS
92 * filtering, in new "permissionsfile".
93 * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
94 * file error you now get a message box (in the Win32 GUI) rather
95 * than the program exiting with no explanation.
96 * - Made killpopup use the PCRS MIME-type checking and HTTP-header
98 * - Removed tabs from "config"
99 * - Moved duplicated url parsing code in "loaders.c" to a new funcition.
100 * - Bumped up version number.
102 * Revision 1.1.1.1 2001/05/15 13:58:58 oes
103 * Initial import of version 2.9.3 source tree
106 *********************************************************************/
113 #include <sys/types.h>
116 #include <sys/stat.h>
119 #if !defined(_WIN32) && !defined(__OS2__)
124 #include "killpopup.h"
127 const char killpopup_h_rcs[] = KILLPOPUP_H_VERSION;
129 #ifdef FEATURE_KILL_POPUPS
131 /*********************************************************************
133 * Function : filter_popups
135 * Description : Filter the block of data that's been read from the server
136 * for javascript popup code and replace by syntactically
137 * neutral code of the same size.
138 * Raise the CSP_FLAG_MODIFIED flag on success.
141 * 1 : buff = Buffer to scan and modify. Null terminated.
142 * 2 : csp = Client state pointer
146 *********************************************************************/
147 void filter_popups(char *buff, struct client_state *csp)
149 char *start_p = NULL;
150 char *close_p = NULL;
154 * replace the window.open( with a harmless JavaScript replacement
155 * (notice the two single quotes)
157 while ((start_p = strstr(buff, "window.open(")) != NULL)
161 strncpy(start_p, "1;''.concat(", 12);
162 log_error(LOG_LEVEL_POPUPS, "Blocked popup window open");
163 csp->flags |= CSP_FLAG_MODIFIED;
168 * replace the .resizeTo( with a harmless JavaScript replacement
170 while ((start_p = strstr(buff, ".resizeTo(")) != NULL)
174 strncpy(start_p, ".scrollTo(", 10);
175 log_error(LOG_LEVEL_POPUPS, "Blocked popup window resize");
176 csp->flags |= CSP_FLAG_MODIFIED;
181 * Filter onUnload and onExit
183 start_p = strstr(buff, "<body");
184 if (!start_p) start_p = strstr(buff, "<BODY");
185 if (!start_p) start_p = strstr(buff, "<Body");
186 if (!start_p) start_p = strstr(buff, "<BOdy");
189 close_p = strchr(start_p, '>');
192 /* we are now between <body and the ending > */
193 p = strstr(start_p, "onUnload");
196 strncpy(p, "_nU_", 4);
197 csp->flags |= CSP_FLAG_MODIFIED;
199 p = strstr(start_p, "onExit");
202 strncpy(p, "_nE_", 4);
203 csp->flags |= CSP_FLAG_MODIFIED;
210 #endif /* def FEATURE_KILL_POPUPS */