X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=filters.h;h=e16a3ea803c2096e81b25e2809f2800ce3146b21;hp=3de1dac4c392ca7c09627b4d1713654872b6966f;hb=a5b4d31ab5ad2ed24cdb53ffa92679411b4176b0;hpb=12f52e6af55d51d4b268af7956d97c772eebbb5c diff --git a/filters.h b/filters.h index 3de1dac4..e16a3ea8 100644 --- a/filters.h +++ b/filters.h @@ -1,26 +1,19 @@ -#ifndef _FILTERS_H -#define _FILTERS_H -#define FILTERS_H_VERSION "$Id: filters.h,v 1.5 2001/05/27 22:17:04 oes Exp $" +#ifndef FILTERS_H_INCLUDED +#define FILTERS_H_INCLUDED /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/filters.h,v $ * * Purpose : Declares functions to parse/crunch headers and pages. - * Functions declared include: - * `acl_addr', `add_stats', `block_acl', `block_imageurl', - * `block_url', `url_permissions', `domaincmp', `dsplit', - * `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. https://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 @@ -38,143 +31,94 @@ * or write to the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - * Revisions : - * $Log: filters.h,v $ - * Revision 1.5 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 +#include "project.h" -#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 */ +/* + * ACL checking + */ +#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 */ -extern char *block_url(struct http_request *http, struct client_state *csp); -#ifdef TRUST_FILES -extern char *trust_url(struct http_request *http, struct client_state *csp); -#endif /* def TRUST_FILES */ -extern int intercept_url(struct http_request *http, struct client_state *csp); -extern char *redirect_url(struct http_request *http, struct client_state *csp); +/* + * Interceptors + */ +extern struct http_response *block_url(struct client_state *csp); +extern struct http_response *redirect_url(struct client_state *csp); +#ifdef FEATURE_TRUST +extern struct http_response *trust_url(struct client_state *csp); +#endif /* def FEATURE_TRUST */ -#ifdef IMAGE_BLOCKING -extern int block_imageurl(struct http_request *http, struct client_state *csp); -#endif /* def IMAGE_BLOCKING */ +/* + * Request inspectors + */ +#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); -extern int url_permissions(struct http_request *http, struct client_state *csp); -extern const struct gateway *forward_url(struct http_request *http, struct client_state *csp); +/* + * Determining applicable actions + */ +extern void get_url_actions(struct client_state *csp, + struct http_request *http); -extern struct url_spec dsplit(char *domain); -extern int domaincmp(struct url_spec *pattern, struct url_spec *fqdn); +extern struct re_filterfile_spec *get_filter(const struct client_state *csp, + const char *requested_name, + enum filter_type requested_type); -extern char *show_proxy_args(struct http_request *http, struct client_state *csp); -extern char *ijb_send_banner(struct http_request *http, struct client_state *csp); +/* + * Determining parent proxies + */ +extern const struct forward_spec *forward_url(struct client_state *csp, + const struct http_request *http); -#ifdef TRUST_FILES -extern char *ij_untrusted_url(struct http_request *http, struct client_state *csp); -#endif /* def TRUST_FILES */ +/* + * Content modification + */ +extern char *execute_content_filters(struct client_state *csp); +extern char *execute_client_body_filters(struct client_state *csp, size_t *filtered_data_len); +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); -char *ijb_show_url_info(struct http_request *http, struct client_state *csp); +extern pcrs_job *compile_dynamic_pcrs_job_list(const struct client_state *csp, const struct re_filterfile_spec *b); -#ifdef STATISTICS -extern char *add_stats(char *s); -#endif /* def STATISTICS */ +extern int content_requires_filtering(struct client_state *csp); +extern int content_filters_enabled(const struct current_action_spec *action); +extern int client_body_filters_enabled(const struct current_action_spec *action); +extern int filters_available(const struct client_state *csp); -#ifdef PCRS -extern char *re_process_buffer(struct client_state *csp); -#endif /* def PCRS */ +/* + * 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 FUZZ +extern char *gif_deanimate_response(struct client_state *csp); +extern jb_err remove_chunked_transfer_coding(char *buffer, size_t *size); +#endif -#ifdef __cplusplus -} /* extern "C" */ +#ifdef FEATURE_EXTENDED_STATISTICS +extern void register_filter_for_statistics(const char *filter); +extern void update_filter_statistics(const char *filter, int hits); +extern void get_filter_statistics(const char *filter, + unsigned long long *executions, + unsigned long long *pages_modified, + unsigned long long *hits); + +extern void register_block_reason_for_statistics(const char *block_reason); +extern void get_block_reason_count(const char *block_reason, + unsigned long long *count); #endif -#endif /* ndef _FILTERS_H */ +#endif /* ndef FILTERS_H_INCLUDED */ /* Local Variables: