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killpopup.c
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killpopup.c
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const char killpopup_rcs[] = "$Id: killpopup.c,v 1.16 2002/03/26 22:29:55 swa Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/Attic/killpopup.c,v $
*
* Purpose : Handles the filtering of popups.
*
* Copyright : Written by and Copyright (C) 2001 the SourceForge
* Privoxy team. http://www.privoxy.org/
*
* Based on the Internet Junkbuster originally written
* by and Copyright (C) 1997 Anonymous Coders and
* Junkbusters Corporation. http://www.junkbusters.com
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* The GNU General Public License should be included with
* this file. If not, you can view it at
* http://www.gnu.org/copyleft/gpl.html
* or write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Revisions :
* $Log: killpopup.c,v $
* Revision 1.16 2002/03/26 22:29:55 swa
* we have a new homepage!
*
* Revision 1.15 2002/03/24 13:25:43 swa
* name change related issues
*
* Revision 1.14 2002/03/07 03:46:53 oes
* Fixed compiler warnings etc
*
* Revision 1.13 2001/11/13 00:16:40 jongfoster
* Replacing references to malloc.h with the standard stdlib.h
* (See ANSI or K&R 2nd Ed)
*
* Revision 1.12 2001/10/25 03:40:48 david__schmidt
* Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
* threads to call select() simultaneously. So, it's time to do a real, live,
* native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
* (native). Both versions will work, but using __OS2__ offers multi-threading.
*
* Revision 1.11 2001/10/07 15:42:41 oes
* filter_popups now gets a csp pointer so it can raise the new
* CSP_FLAG_MODIFIED flag.
*
* Revision 1.10 2001/09/22 16:34:44 jongfoster
* Removing unneeded #includes
*
* Revision 1.9 2001/07/31 14:44:22 oes
* Deleted unused size parameter from filter_popups()
*
* Revision 1.8 2001/07/30 22:08:36 jongfoster
* Tidying up #defines:
* - All feature #defines are now of the form FEATURE_xxx
* - Permanently turned off WIN_GUI_EDIT
* - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
*
* Revision 1.7 2001/07/20 19:29:25 haroon
* - In v1.5 forgot to add that I implemented LOG_LEVEL_POPUPS in errlog.c,
* errlog.h and killpopup.c. In that case, it is superfluous to have define for
* POPUP_VERBOSE, so I removed the defines and logging is now done
* via log_error(LOG_LEVEL_POPUPS, ....)
*
* Revision 1.6 2001/07/19 19:11:35 haroon
* - Implemented Guy's idea of replacing window.open( with 1;''.concat(
* - Implemented Guy's idea of replacing .resizeTo( with .scrollTo(
*
* Revision 1.5 2001/07/18 15:02:52 haroon
* improved nuking of window.open
*
* Revision 1.4 2001/06/29 13:29:55 oes
* Added FIXMEs (and didn't repair, hehe)
*
* Revision 1.3 2001/05/22 18:56:28 oes
* CRLF -> LF
*
* Revision 1.2 2001/05/20 01:21:20 jongfoster
* Version 2.9.4 checkin.
* - Merged popupfile and cookiefile, and added control over PCRS
* filtering, in new "permissionsfile".
* - Implemented LOG_LEVEL_FATAL, so that if there is a configuration
* file error you now get a message box (in the Win32 GUI) rather
* than the program exiting with no explanation.
* - Made killpopup use the PCRS MIME-type checking and HTTP-header
* skipping.
* - Removed tabs from "config"
* - Moved duplicated url parsing code in "loaders.c" to a new funcition.
* - Bumped up version number.
*
* Revision 1.1.1.1 2001/05/15 13:58:58 oes
* Initial import of version 2.9.3 source tree
*
*
*********************************************************************/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include <ctype.h>
#if !defined(_WIN32) && !defined(__OS2__)
#include <unistd.h>
#endif
#include "project.h"
#include "killpopup.h"
#include "errlog.h"
const char killpopup_h_rcs[] = KILLPOPUP_H_VERSION;
#ifdef FEATURE_KILL_POPUPS
/*********************************************************************
*
* Function : filter_popups
*
* Description : Filter the block of data that's been read from the server
* for javascript popup code and replace by syntactically
* neutral code of the same size.
* Raise the CSP_FLAG_MODIFIED flag on success.
*
* Parameters :
* 1 : buff = Buffer to scan and modify. Null terminated.
* 2 : csp = Client state pointer
*
* Returns : void
*
*********************************************************************/
void filter_popups(char *buff, struct client_state *csp)
{
char *start_p = NULL;
char *close_p = NULL;
char *p = NULL;
/*
* replace the window.open( with a harmless JavaScript replacement
* (notice the two single quotes)
*/
while ((start_p = strstr(buff, "window.open(")) != NULL)
{
if (start_p)
{
strncpy(start_p, "1;''.concat(", 12);
log_error(LOG_LEVEL_POPUPS, "Blocked popup window open");
csp->flags |= CSP_FLAG_MODIFIED;
}
}
/*
* replace the .resizeTo( with a harmless JavaScript replacement
*/
while ((start_p = strstr(buff, ".resizeTo(")) != NULL)
{
if (start_p)
{
strncpy(start_p, ".scrollTo(", 10);
log_error(LOG_LEVEL_POPUPS, "Blocked popup window resize");
csp->flags |= CSP_FLAG_MODIFIED;
}
}
/*
* Filter onUnload and onExit
*/
start_p = strstr(buff, "<body");
if (!start_p) start_p = strstr(buff, "<BODY");
if (!start_p) start_p = strstr(buff, "<Body");
if (!start_p) start_p = strstr(buff, "<BOdy");
if (start_p)
{
close_p = strchr(start_p, '>');
if (close_p)
{
/* we are now between <body and the ending > */
p = strstr(start_p, "onUnload");
if (p)
{
strncpy(p, "_nU_", 4);
csp->flags |= CSP_FLAG_MODIFIED;
}
p = strstr(start_p, "onExit");
if (p)
{
strncpy(p, "_nE_", 4);
csp->flags |= CSP_FLAG_MODIFIED;
}
}
}
}
#endif /* def FEATURE_KILL_POPUPS */
/*
Local Variables:
tab-width: 3
end:
*/