-#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
* 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
- *
- *
*********************************************************************/
-\f
-
-#include "project.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
-#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 */
+#include "project.h"
-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);
+/*
+ * 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 */
-#ifdef IMAGE_BLOCKING
-extern int block_imageurl(struct http_request *http, struct client_state *csp);
-#endif /* def IMAGE_BLOCKING */
+/*
+ * 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 */
-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);
+/*
+ * 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 struct url_spec dsplit(char *domain);
-extern int domaincmp(struct url_spec *pattern, struct url_spec *fqdn);
+/*
+ * Determining applicable actions
+ */
+extern void get_url_actions(struct client_state *csp,
+ struct http_request *http);
-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);
+extern struct re_filterfile_spec *get_filter(const struct client_state *csp,
+ const char *requested_name,
+ enum filter_type requested_type);
-#ifdef TRUST_FILES
-extern char *ij_untrusted_url(struct http_request *http, struct client_state *csp);
-#endif /* def TRUST_FILES */
+/*
+ * Determining parent proxies
+ */
+extern const struct forward_spec *forward_url(struct client_state *csp,
+ const struct http_request *http);
-char *ijb_show_url_info(struct http_request *http, struct client_state *csp);
+/*
+ * Content modification
+ */
+extern char *execute_content_filters(struct client_state *csp);
+extern int execute_client_body_filters(struct client_state *csp, size_t *content_length);
+extern jb_err execute_client_body_taggers(struct client_state *csp, size_t content_length);
+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 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 client_body_filters_enabled(const struct current_action_spec *action);
+extern int client_body_taggers_enabled(const struct current_action_spec *action);
+extern int filters_available(const struct client_state *csp);
-#ifdef STATISTICS
-extern char *add_stats(char *s);
-#endif /* def STATISTICS */
+/*
+ * Handling Max-Forwards:
+ */
+extern struct http_response *direct_response(struct client_state *csp);
-#ifdef PCRS
-extern char *re_process_buffer(struct client_state *csp);
-#endif /* def PCRS */
+extern int get_bytes_missing_from_chunked_data(char *buffer, size_t size, size_t offset);
+extern int chunked_data_is_complete(char *buffer, size_t size, size_t offset);
-/* 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:
projects / privoxy.git / blobdiff