X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=filters.h;h=e64e5d0d2700236ac97dee709f51e5151ae31127;hp=27a00f6142eccc8f1f87ec172ba2e77ffa3c0c34;hb=bbd036550253068aa71a1a9c651f298ad6bcd549;hpb=2a1116713cb4dfdcc837e87f111886b1c4360923 diff --git a/filters.h b/filters.h index 27a00f61..e64e5d0d 100644 --- a/filters.h +++ b/filters.h @@ -1,6 +1,6 @@ #ifndef FILTERS_H_INCLUDED #define FILTERS_H_INCLUDED -#define FILTERS_H_VERSION "$Id: filters.h,v 1.11 2001/07/13 14:00:18 oes Exp $" +#define FILTERS_H_VERSION "$Id: filters.h,v 1.47 2016/03/17 10:40:53 fabiankeil Exp $" /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/filters.h,v $ @@ -8,19 +8,18 @@ * Purpose : Declares functions to parse/crunch headers and pages. * Functions declared include: * `acl_addr', `add_stats', `block_acl', `block_imageurl', - * `block_url', `url_actions', `domaincmp', `dsplit', - * `filter_popups', `forward_url' + * `block_url', `url_actions', `filter_popups', `forward_url' * `ij_untrusted_url', `intercept_url', `re_process_buffer', * `show_proxy_args', and `trust_url' * - * Copyright : Written by and Copyright (C) 2001 the SourceForge - * IJBSWA team. http://ijbswa.sourceforge.net + * Copyright : Written by and Copyright (C) 2001-2010 the + * Privoxy team. http://www.privoxy.org/ * * Based on the Internet Junkbuster originally written - * by and Copyright (C) 1997 Anonymous Coders and + * by and Copyright (C) 1997 Anonymous Coders and * Junkbusters Corporation. http://www.junkbusters.com * - * This program is free software; you can redistribute it + * 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 @@ -38,206 +37,83 @@ * or write to the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - * Revisions : - * $Log: filters.h,v $ - * Revision 1.11 2001/07/13 14:00:18 oes - * - Introduced gif_deanimate_response - * - Renamed re_process_buffer to pcrs_filter_response - * - Removed all #ifdef PCRS - * - * Revision 1.10 2001/06/29 13:29:01 oes - * Cleaned up and updated to reflect the changesin - * filters.c - * - * Revision 1.9 2001/06/07 23:10:53 jongfoster - * Replacing struct gateway with struct forward_spec - * - * Revision 1.8 2001/06/03 19:12:00 oes - * extracted-CGI relevant stuff - * - * Revision 1.7 2001/05/31 21:21:30 jongfoster - * Permissionsfile / actions file changes: - * - Changed "permission" to "action" throughout - * - changes to file format to allow string parameters - * - Moved helper functions to actions.c - * - * Revision 1.6 2001/05/29 09:50:24 jongfoster - * Unified blocklist/imagelist/permissionslist. - * File format is still under discussion, but the internal changes - * are (mostly) done. - * - * Also modified interceptor behaviour: - * - We now intercept all URLs beginning with one of the following - * prefixes (and *only* these prefixes): - * * http://i.j.b/ - * * http://ijbswa.sf.net/config/ - * * http://ijbswa.sourceforge.net/config/ - * - New interceptors "home page" - go to http://i.j.b/ to see it. - * - Internal changes so that intercepted and fast redirect pages - * are not replaced with an image. - * - Interceptors now have the option to send a binary page direct - * to the client. (i.e. ijb-send-banner uses this) - * - Implemented show-url-info interceptor. (Which is why I needed - * the above interceptors changes - a typical URL is - * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif". - * The previous mechanism would not have intercepted that, and - * if it had been intercepted then it then it would have replaced - * it with an image.) - * - * Revision 1.5 2001/05/27 22:17:04 oes - * - * - re_process_buffer no longer writes the modified buffer - * to the client, which was very ugly. It now returns the - * buffer, which it is then written by chat. - * - * - content_length now adjusts the Content-Length: header - * for modified documents rather than crunch()ing it. - * (Length info in csp->content_length, which is 0 for - * unmodified documents) - * - * - For this to work, sed() is called twice when filtering. - * - * Revision 1.4 2001/05/26 15:26:15 jongfoster - * ACL feature now provides more security by immediately dropping - * connections from untrusted hosts. - * - * Revision 1.3 2001/05/22 18:46:04 oes - * - * - Enabled filtering banners by size rather than URL - * by adding patterns that replace all standard banner - * sizes with the "Junkbuster" gif to the re_filterfile - * - * - Enabled filtering WebBugs by providing a pattern - * which kills all 1x1 images - * - * - Added support for PCRE_UNGREEDY behaviour to pcrs, - * which is selected by the (nonstandard and therefore - * capital) letter 'U' in the option string. - * It causes the quantifiers to be ungreedy by default. - * Appending a ? turns back to greedy (!). - * - * - Added a new interceptor ijb-send-banner, which - * sends back the "Junkbuster" gif. Without imagelist or - * MSIE detection support, or if tinygif = 1, or the - * URL isn't recognized as an imageurl, a lame HTML - * explanation is sent instead. - * - * - Added new feature, which permits blocking remote - * script redirects and firing back a local redirect - * to the browser. - * The feature is conditionally compiled, i.e. it - * can be disabled with --disable-fast-redirects, - * plus it must be activated by a "fast-redirects" - * line in the config file, has its own log level - * and of course wants to be displayed by show-proxy-args - * Note: Boy, all the #ifdefs in 1001 locations and - * all the fumbling with configure.in and acconfig.h - * were *way* more work than the feature itself :-( - * - * - Because a generic redirect template was needed for - * this, tinygif = 3 now uses the same. - * - * - Moved GIFs, and other static HTTP response templates - * to project.h - * - * - Some minor fixes - * - * - Removed some >400 CRs again (Jon, you really worked - * a lot! ;-) - * - * 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 13:58:52 oes - * Initial import of version 2.9.3 source tree - * - * *********************************************************************/ - -#include "project.h" - -#ifdef __cplusplus -extern "C" { -#endif - - -struct access_control_addr; -struct client_state; -struct http_request; -struct http_response; -struct current_action_spec; -struct url_actions; -struct url_spec; +#include "project.h" /* * ACL checking */ -#ifdef ACL_FILES -extern int block_acl(struct access_control_addr *dst, struct client_state *csp); -extern int acl_addr(char *aspec, struct access_control_addr *aca); -#endif /* def ACL_FILES */ +#ifdef FEATURE_ACL +extern int block_acl(const struct access_control_addr *dst, const struct client_state *csp); +extern int acl_addr(const char *aspec, struct access_control_addr *aca); +#endif /* def FEATURE_ACL */ /* * Interceptors */ extern struct http_response *block_url(struct client_state *csp); extern struct http_response *redirect_url(struct client_state *csp); -#ifdef TRUST_FILES +#ifdef FEATURE_TRUST extern struct http_response *trust_url(struct client_state *csp); -#endif /* def TRUST_FILES */ +#endif /* def FEATURE_TRUST */ /* * Request inspectors */ -#ifdef TRUST_FILES -extern int is_untrusted_url(struct client_state *csp); -#endif /* def TRUST_FILES */ -#ifdef IMAGE_BLOCKING -extern int is_imageurl(struct client_state *csp); -#endif /* def IMAGE_BLOCKING */ +#ifdef FEATURE_TRUST +extern int is_untrusted_url(const struct client_state *csp); +#endif /* def FEATURE_TRUST */ +#ifdef FEATURE_IMAGE_BLOCKING +extern int is_imageurl(const struct client_state *csp); +#endif /* def FEATURE_IMAGE_BLOCKING */ +extern int connect_port_is_forbidden(const struct client_state *csp); /* * Determining applicable actions */ -extern void url_actions(struct http_request *http, - struct client_state *csp); -extern void apply_url_actions(struct current_action_spec *action, - struct http_request *http, - struct url_actions *b); +extern void get_url_actions(struct client_state *csp, + struct http_request *http); + +extern struct re_filterfile_spec *get_filter(const struct client_state *csp, + const char *requested_name, + enum filter_type requested_type); + /* * Determining parent proxies */ -extern const struct forward_spec *forward_url(struct http_request *http, struct client_state *csp); - -extern struct url_spec dsplit(char *domain); -extern int domaincmp(struct url_spec *pattern, struct url_spec *fqdn); +extern const struct forward_spec *forward_url(struct client_state *csp, + const struct http_request *http); /* * Content modification */ -extern char *pcrs_filter_response(struct client_state *csp); -extern char *gif_deanimate_response(struct client_state *csp); +extern char *execute_content_filters(struct client_state *csp); +extern char *execute_single_pcrs_command(char *subject, const char *pcrs_command, int *hits); +extern char *rewrite_url(char *old_url, const char *pcrs_command); +extern char *get_last_url(char *subject, const char *redirect_mode); + +extern pcrs_job *compile_dynamic_pcrs_job_list(const struct client_state *csp, const struct re_filterfile_spec *b); + +extern int content_requires_filtering(struct client_state *csp); +extern int content_filters_enabled(const struct current_action_spec *action); +extern int filters_available(const struct client_state *csp); -/* +/* + * Handling Max-Forwards: + */ +extern struct http_response *direct_response(struct client_state *csp); + +/* * Revision control strings from this header and associated .c file */ extern const char filters_rcs[]; extern const char filters_h_rcs[]; -#ifdef __cplusplus -} /* extern "C" */ +#ifdef FUZZ +extern char *gif_deanimate_response(struct client_state *csp); +extern jb_err remove_chunked_transfer_coding(char *buffer, size_t *size); #endif #endif /* ndef FILTERS_H_INCLUDED */