X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=actions.c;h=ab3bbd7b62df4a2731ea4d6a64f1a8c8e256ff04;hp=aa1d026404b4962f11710cac0b9ecec675337313;hb=7d0d27186d473655bc895c40515277d4e6488439;hpb=dfb9a1ebaeacec72783009c3c7c7b58dea4a4fcc diff --git a/actions.c b/actions.c index aa1d0264..ab3bbd7b 100644 --- a/actions.c +++ b/actions.c @@ -1,4 +1,4 @@ -const char actions_rcs[] = "$Id: actions.c,v 1.30 2002/04/30 11:14:52 oes Exp $"; +const char actions_rcs[] = "$Id: actions.c,v 1.39 2007/04/17 18:21:45 fabiankeil Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/actions.c,v $ @@ -6,7 +6,7 @@ const char actions_rcs[] = "$Id: actions.c,v 1.30 2002/04/30 11:14:52 oes Exp $" * Purpose : Declares functions to work with actions files * Functions declared include: FIXME * - * Copyright : Written by and Copyright (C) 2001 the SourceForge + * Copyright : Written by and Copyright (C) 2001-2007 the SourceForge * Privoxy team. http://www.privoxy.org/ * * Based on the Internet Junkbuster originally written @@ -33,6 +33,56 @@ const char actions_rcs[] = "$Id: actions.c,v 1.30 2002/04/30 11:14:52 oes Exp $" * * Revisions : * $Log: actions.c,v $ + * Revision 1.39 2007/04/17 18:21:45 fabiankeil + * Split update_action_bits() into + * update_action_bits_for_all_tags() + * and update_action_bits_for_tag(). + * + * Revision 1.38 2007/04/15 16:39:20 fabiankeil + * Introduce tags as alternative way to specify which + * actions apply to a request. At the moment tags can be + * created based on client and server headers. + * + * Revision 1.37 2007/03/11 15:56:12 fabiankeil + * Add kludge to log unknown aliases and actions before exiting. + * + * Revision 1.36 2006/12/28 17:15:42 fabiankeil + * Fix gcc43 conversion warning. + * + * Revision 1.35 2006/07/18 14:48:45 david__schmidt + * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch) + * with what was really the latest development (the v_3_0_branch branch) + * + * Revision 1.32.2.6 2006/01/29 23:10:56 david__schmidt + * Multiple filter file support + * + * Revision 1.32.2.5 2005/06/09 01:18:41 david__schmidt + * Tweaks to conditionally include pthread.h if FEATURE_PTHREAD is enabled - + * this becomes important when jcc.h gets included later down the line. + * + * Revision 1.32.2.4 2003/12/03 10:33:11 oes + * - Implemented Privoxy version requirement through + * for-privoxy-version= statement in {{settings}} + * block + * - Fix for unchecked out-of-memory condition + * + * Revision 1.32.2.3 2003/02/28 12:52:10 oes + * Fixed memory leak reported by Dan Price in Bug #694713 + * + * Revision 1.32.2.2 2002/11/20 14:36:55 oes + * Extended unload_current_actions_file() to multiple AFs. + * Thanks to Oliver Stoeneberg for the hint. + * + * Revision 1.32.2.1 2002/05/26 12:13:16 roro + * Change unsigned to unsigned long in actions_name struct. This closes + * SourceForge Bug #539284. + * + * Revision 1.32 2002/05/12 21:36:29 jongfoster + * Correcting function comments + * + * Revision 1.31 2002/05/06 07:56:50 oes + * Made actions_to_html independent of FEATURE_CGI_EDIT_ACTIONS + * * Revision 1.30 2002/04/30 11:14:52 oes * Made csp the first parameter in *action_to_html * @@ -178,6 +228,10 @@ const char actions_rcs[] = "$Id: actions.c,v 1.30 2002/04/30 11:14:52 oes Exp $" #include #include +#ifdef FEATURE_PTHREAD +#include +#endif + #include "project.h" #include "jcc.h" #include "list.h" @@ -188,6 +242,7 @@ const char actions_rcs[] = "$Id: actions.c,v 1.30 2002/04/30 11:14:52 oes Exp $" #include "encode.h" #include "urlmatch.h" #include "cgi.h" +#include "ssplit.h" const char actions_h_rcs[] = ACTIONS_H_VERSION; @@ -215,10 +270,10 @@ const char actions_h_rcs[] = ACTIONS_H_VERSION; struct action_name { const char * name; - unsigned mask; /* a bit set to "0" = remove action */ - unsigned add; /* a bit set to "1" = add action */ - int takes_value; /* an AV_... constant */ - int index; /* index into strings[] or multi[] */ + unsigned long mask; /* a bit set to "0" = remove action */ + unsigned long add; /* a bit set to "1" = add action */ + int takes_value; /* an AV_... constant */ + int index; /* index into strings[] or multi[] */ }; /* @@ -262,11 +317,11 @@ static int load_one_actions_file(struct client_state *csp, int fileid); * Function : merge_actions * * Description : Merge two actions together. - * Similar to "cur_action += new_action". + * Similar to "dest += src". * * Parameters : - * 1 : cur_action = Current actions, to modify. - * 2 : new_action = Action to add. + * 1 : dest = Actions to modify. + * 2 : src = Action to add. * * Returns : JB_ERR_OK or JB_ERR_MEMORY * @@ -337,7 +392,7 @@ jb_err merge_actions (struct action_spec *dest, * Function : copy_action * * Description : Copy an action_specs. - * Similar to "cur_action = new_action". + * Similar to "dest = src". * * Parameters : * 1 : dest = Destination of copy. @@ -543,7 +598,7 @@ jb_err get_action_token(char **line, char **name, char **value) * Parameters : * 1 : line = The string containing the actions. * Will be written to by this function. - * 2 : aliases = Custom alias list, or NULL for none. + * 2 : alias_list = Custom alias list, or NULL for none. * 3 : cur_action = Where to store the action. Caller * allocates memory. * @@ -697,6 +752,16 @@ jb_err get_actions(char *line, else { /* Bad action name */ + /* + * XXX: This is a fatal error and Privoxy will later on exit + * in load_one_actions_file() because of an "invalid line". + * + * It would be preferable to name the offending option in that + * error message, but currently there is no way to do that and + * we have to live with two error messages for basically the + * same reason. + */ + log_error(LOG_LEVEL_ERROR, "Unknown action or alias: %s", option); return JB_ERR_PARSE; } } @@ -816,6 +881,99 @@ jb_err merge_current_action (struct current_action_spec *dest, } +/********************************************************************* + * + * Function : update_action_bits_for_all_tags + * + * Description : Updates the action bits based on all matching tags. + * + * Parameters : + * 1 : csp = Current client state (buffers, headers, etc...) + * + * Returns : 0 if no tag matched, or + * 1 otherwise + * + *********************************************************************/ +int update_action_bits_for_all_tags(struct client_state *csp) +{ + struct list_entry *tag; + int updated = 0; + + for (tag = csp->tags->first; tag != NULL; tag = tag->next) + { + if (update_action_bits_for_tag(csp, tag->str)) + { + updated = 1; + } + } + + return updated; +} + + +/********************************************************************* + * + * Function : update_action_bits_for_tag + * + * Description : Updates the action bits based on the action sections + * whose tag patterns match a provided tag. + * + * Parameters : + * 1 : csp = Current client state (buffers, headers, etc...) + * 2 : tag = The tag on which the update should be based on + * + * Returns : 0 if no tag matched, or + * 1 otherwise + * + *********************************************************************/ +int update_action_bits_for_tag(struct client_state *csp, const char *tag) +{ + struct file_list *fl; + struct url_actions *b; + + int updated = 0; + int i; + + assert(tag); + assert(list_contains_item(csp->tags, tag)); + + /* Run through all action files, */ + for (i = 0; i < MAX_AF_FILES; i++) + { + if (((fl = csp->actions_list[i]) == NULL) || ((b = fl->f) == NULL)) + { + /* Skip empty files */ + continue; + } + + /* and through all the action patterns, */ + for (b = b->next; NULL != b; b = b->next) + { + /* skip the URL patterns, */ + if (NULL == b->url->tag_regex) + { + continue; + } + + /* and check if one of the tag patterns matches the tag, */ + if (0 == regexec(b->url->tag_regex, tag, 0, NULL, 0)) + { + /* if it does, update the action bit map, */ + if (merge_current_action(csp->action, b->action)) + { + log_error(LOG_LEVEL_ERROR, + "Out of memorey while changing action bits"); + } + /* and signal the change. */ + updated = 1; + } + } + } + + return updated; +} + + /********************************************************************* * * Function : free_current_action @@ -847,7 +1005,7 @@ void free_current_action (struct current_action_spec *src) } -static struct file_list *current_actions_file[MAX_ACTION_FILES] = { +static struct file_list *current_actions_file[MAX_AF_FILES] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; @@ -868,10 +1026,15 @@ static struct file_list *current_actions_file[MAX_ACTION_FILES] = { *********************************************************************/ void unload_current_actions_file(void) { - if (current_actions_file) + int i; + + for (i = 0; i < MAX_AF_FILES; i++) { - current_actions_file->unloader = unload_actions_file; - current_actions_file = NULL; + if (current_actions_file[i]) + { + current_actions_file[i]->unloader = unload_actions_file; + current_actions_file[i] = NULL; + } } } #endif /* FEATURE_GRACEFUL_TERMINATION */ @@ -950,7 +1113,7 @@ int load_actions_file(struct client_state *csp) int i; int result; - for (i = 0; i < MAX_ACTION_FILES; i++) + for (i = 0; i < MAX_AF_FILES; i++) { if (csp->config->actions_file[i]) { @@ -1018,8 +1181,9 @@ static int load_one_actions_file(struct client_state *csp, int fileid) } if (!fs) { - log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error finding file: %E", - csp->config->actions_file[fileid]); + log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': %E. " + "Note that beginning with Privoxy 3.0.7, actions files have to be specified " + "with their complete file names.", csp->config->actions_file[fileid]); return 1; /* never get here */ } @@ -1046,7 +1210,7 @@ static int load_one_actions_file(struct client_state *csp, int fileid) if (buf[1] == '{') { /* It's {{settings}} or {{alias}} */ - int len = strlen(buf); + size_t len = strlen(buf); char * start = buf + 2; char * end = buf + len - 1; if ((len < 5) || (*end-- != '}') || (*end-- != '}')) @@ -1184,7 +1348,7 @@ static int load_one_actions_file(struct client_state *csp, int fileid) init_action(cur_action); /* trim { */ - strcpy(actions_buf, buf + 1); + strlcpy(actions_buf, buf + 1, sizeof(actions_buf)); /* check we have a trailing } and then trim it */ end = actions_buf + strlen(actions_buf) - 1; @@ -1217,9 +1381,44 @@ static int load_one_actions_file(struct client_state *csp, int fileid) { /* * Part of the {{settings}} block. - * Ignore for now, but we may want to read & check permissions - * when we go multi-user. + * For now only serves to check if the file's minimum Privoxy + * version requirement is met, but we may want to read & check + * permissions when we go multi-user. */ + if (!strncmp(buf, "for-privoxy-version=", 20)) + { + char *version_string, *fields[3]; + int num_fields; + + if ((version_string = strdup(buf + 20)) == NULL) + { + fclose(fp); + log_error(LOG_LEVEL_FATAL, + "can't load actions file '%s': out of memory!", + csp->config->actions_file[fileid]); + return 1; /* never get here */ + } + + num_fields = ssplit(version_string, ".", fields, 3, TRUE, FALSE); + + if (num_fields < 1 || atoi(fields[0]) == 0) + { + log_error(LOG_LEVEL_ERROR, + "While loading actions file '%s': invalid line (%lu): %s", + csp->config->actions_file[fileid], linenum, buf); + } + else if ( atoi(fields[0]) > VERSION_MAJOR + || (num_fields > 1 && atoi(fields[1]) > VERSION_MINOR) + || (num_fields > 2 && atoi(fields[2]) > VERSION_POINT)) + { + fclose(fp); + log_error(LOG_LEVEL_FATAL, + "Actions file '%s', line %lu requires newer Privoxy version: %s", + csp->config->actions_file[fileid], linenum, buf ); + return 1; /* never get here */ + } + free(version_string); + } } else if (mode == MODE_DESCRIPTION) { @@ -1282,9 +1481,16 @@ static int load_one_actions_file(struct client_state *csp, int fileid) return 1; /* never get here */ } - new_alias->name = strdup(buf); + if ((new_alias->name = strdup(buf)) == NULL) + { + fclose(fp); + log_error(LOG_LEVEL_FATAL, + "can't load actions file '%s': out of memory!", + csp->config->actions_file[fileid]); + return 1; /* never get here */ + } - strcpy(actions_buf, start); + strlcpy(actions_buf, start, sizeof(actions_buf)); if (get_actions(actions_buf, alias_list, new_alias->action)) { @@ -1354,6 +1560,7 @@ static int load_one_actions_file(struct client_state *csp, int fileid) fclose(fp); free_action(cur_action); + freez(cur_action); free_alias_list(alias_list); @@ -1378,13 +1585,12 @@ static int load_one_actions_file(struct client_state *csp, int fileid) * * Function : actions_to_text * - * Description : Converts a actionsfile entry from numeric form - * ("mask" and "add") to a text line which is split + * Description : Converts a actionsfile entry from the internal + * structure into a text line. The output is split * into one line for each action with line continuation. * * Parameters : - * 1 : mask = As from struct url_actions - * 2 : add = As from struct url_actions + * 1 : action = The action to format. * * Returns : A string. Caller must free it. * NULL on out-of-memory error.