1 const char actions_rcs[] = "$Id: actions.c,v 1.90 2013/11/24 14:25:19 fabiankeil Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/actions.c,v $
6 * Purpose : Declares functions to work with actions files
8 * Copyright : Written by and Copyright (C) 2001-2011 the
9 * Privoxy team. http://www.privoxy.org/
11 * Based on the Internet Junkbuster originally written
12 * by and Copyright (C) 1997 Anonymous Coders and
13 * Junkbusters Corporation. http://www.junkbusters.com
15 * This program is free software; you can redistribute it
16 * and/or modify it under the terms of the GNU General
17 * Public License as published by the Free Software
18 * Foundation; either version 2 of the License, or (at
19 * your option) any later version.
21 * This program is distributed in the hope that it will
22 * be useful, but WITHOUT ANY WARRANTY; without even the
23 * implied warranty of MERCHANTABILITY or FITNESS FOR A
24 * PARTICULAR PURPOSE. See the GNU General Public
25 * License for more details.
27 * The GNU General Public License should be included with
28 * this file. If not, you can view it at
29 * http://www.gnu.org/copyleft/gpl.html
30 * or write to the Free Software Foundation, Inc., 59
31 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
33 *********************************************************************/
43 #ifdef FEATURE_PTHREAD
60 const char actions_h_rcs[] = ACTIONS_H_VERSION;
64 * We need the main list of options.
66 * First, we need a way to tell between boolean, string, and multi-string
67 * options. For string and multistring options, we also need to be
68 * able to tell the difference between a "+" and a "-". (For bools,
69 * the "+"/"-" information is encoded in "add" and "mask"). So we use
70 * an enumerated type (well, the preprocessor equivalent). Here are
73 enum action_value_type {
74 AV_NONE = 0, /* +opt -opt */
75 AV_ADD_STRING = 1, /* +stropt{string} */
76 AV_REM_STRING = 2, /* -stropt */
77 AV_ADD_MULTI = 3, /* +multiopt{string} +multiopt{string2} */
78 AV_REM_MULTI = 4 /* -multiopt{string} -multiopt */
82 * We need a structure to hold the name, flag changes,
83 * type, and string index.
88 unsigned long mask; /* a bit set to "0" = remove action */
89 unsigned long add; /* a bit set to "1" = add action */
90 enum action_value_type value_type; /* an AV_... constant */
91 int index; /* index into strings[] or multi[] */
95 * And with those building blocks in place, here's the array.
97 static const struct action_name action_names[] =
100 * Well actually there's no data here - it's in actionlist.h
101 * This keeps it together to make it easy to change.
103 * Here's the macros used to format it:
105 #define DEFINE_ACTION_MULTI(name,index) \
106 { "+" name, ACTION_MASK_ALL, 0, AV_ADD_MULTI, index }, \
107 { "-" name, ACTION_MASK_ALL, 0, AV_REM_MULTI, index },
108 #define DEFINE_ACTION_STRING(name,flag,index) \
109 { "+" name, ACTION_MASK_ALL, flag, AV_ADD_STRING, index }, \
110 { "-" name, ~flag, 0, AV_REM_STRING, index },
111 #define DEFINE_ACTION_BOOL(name,flag) \
112 { "+" name, ACTION_MASK_ALL, flag }, \
113 { "-" name, ~flag, 0 },
114 #define DEFINE_ACTION_ALIAS 1 /* Want aliases please */
116 #include "actionlist.h"
118 #undef DEFINE_ACTION_MULTI
119 #undef DEFINE_ACTION_STRING
120 #undef DEFINE_ACTION_BOOL
121 #undef DEFINE_ACTION_ALIAS
123 { NULL, 0, 0 } /* End marker */
127 static int load_one_actions_file(struct client_state *csp, int fileid);
130 /*********************************************************************
132 * Function : merge_actions
134 * Description : Merge two actions together.
135 * Similar to "dest += src".
138 * 1 : dest = Actions to modify.
139 * 2 : src = Action to add.
141 * Returns : JB_ERR_OK or JB_ERR_MEMORY
143 *********************************************************************/
144 jb_err merge_actions (struct action_spec *dest,
145 const struct action_spec *src)
150 dest->mask &= src->mask;
151 dest->add &= src->mask;
152 dest->add |= src->add;
154 for (i = 0; i < ACTION_STRING_COUNT; i++)
156 char * str = src->string[i];
159 freez(dest->string[i]);
160 dest->string[i] = strdup_or_die(str);
164 for (i = 0; i < ACTION_MULTI_COUNT; i++)
166 if (src->multi_remove_all[i])
168 /* Remove everything from dest */
169 list_remove_all(dest->multi_remove[i]);
170 dest->multi_remove_all[i] = 1;
172 err = list_duplicate(dest->multi_add[i], src->multi_add[i]);
174 else if (dest->multi_remove_all[i])
177 * dest already removes everything, so we only need to worry
180 list_remove_list(dest->multi_add[i], src->multi_remove[i]);
181 err = list_append_list_unique(dest->multi_add[i], src->multi_add[i]);
185 /* No "remove all"s to worry about. */
186 list_remove_list(dest->multi_add[i], src->multi_remove[i]);
187 err = list_append_list_unique(dest->multi_remove[i], src->multi_remove[i]);
188 if (!err) err = list_append_list_unique(dest->multi_add[i], src->multi_add[i]);
201 /*********************************************************************
203 * Function : copy_action
205 * Description : Copy an action_specs.
206 * Similar to "dest = src".
209 * 1 : dest = Destination of copy.
210 * 2 : src = Source for copy.
212 * Returns : JB_ERR_OK or JB_ERR_MEMORY
214 *********************************************************************/
215 jb_err copy_action (struct action_spec *dest,
216 const struct action_spec *src)
219 jb_err err = JB_ERR_OK;
222 memset(dest, '\0', sizeof(*dest));
224 dest->mask = src->mask;
225 dest->add = src->add;
227 for (i = 0; i < ACTION_STRING_COUNT; i++)
229 char * str = src->string[i];
232 str = strdup_or_die(str);
233 dest->string[i] = str;
237 for (i = 0; i < ACTION_MULTI_COUNT; i++)
239 dest->multi_remove_all[i] = src->multi_remove_all[i];
240 err = list_duplicate(dest->multi_remove[i], src->multi_remove[i]);
245 err = list_duplicate(dest->multi_add[i], src->multi_add[i]);
254 /*********************************************************************
256 * Function : free_action_spec
258 * Description : Frees an action_spec and the memory used by it.
261 * 1 : src = Source to free.
265 *********************************************************************/
266 void free_action_spec(struct action_spec *src)
273 /*********************************************************************
275 * Function : free_action
277 * Description : Destroy an action_spec. Frees memory used by it,
278 * except for the memory used by the struct action_spec
282 * 1 : src = Source to free.
286 *********************************************************************/
287 void free_action (struct action_spec *src)
296 for (i = 0; i < ACTION_STRING_COUNT; i++)
298 freez(src->string[i]);
301 for (i = 0; i < ACTION_MULTI_COUNT; i++)
303 destroy_list(src->multi_remove[i]);
304 destroy_list(src->multi_add[i]);
307 memset(src, '\0', sizeof(*src));
311 /*********************************************************************
313 * Function : get_action_token
315 * Description : Parses a line for the first action.
316 * Modifies its input array, doesn't allocate memory.
318 * *line=" +abc{def} -ghi "
325 * 1 : line = [in] The line containing the action.
326 * [out] Start of next action on line, or
327 * NULL if we reached the end of line before
328 * we found an action.
329 * 2 : name = [out] Start of action name, null
330 * terminated. NULL on EOL
331 * 3 : value = [out] Start of action value, null
332 * terminated. NULL if none or EOL.
334 * Returns : JB_ERR_OK => Ok
335 * JB_ERR_PARSE => Mismatched {} (line was trashed anyway)
337 *********************************************************************/
338 jb_err get_action_token(char **line, char **name, char **value)
343 /* set default returns */
348 /* Eat any leading whitespace */
349 while ((*str == ' ') || (*str == '\t'))
361 /* null name, just value is prohibited */
368 while (((ch = *str) != '\0') &&
369 (ch != ' ') && (ch != '\t') && (ch != '{'))
373 /* error, '}' without '{' */
385 /* EOL - be careful not to run off buffer */
390 /* More to parse next time. */
399 /* The value ends with the first non-escaped closing curly brace */
400 while ((str = strchr(str, '}')) != NULL)
404 /* Overwrite the '\' so the action doesn't see it. */
405 string_move(str-1, str);
426 /*********************************************************************
428 * Function : action_used_to_be_valid
430 * Description : Checks if unrecognized actions were valid in earlier
434 * 1 : action = The string containing the action to check.
436 * Returns : True if yes, otherwise false.
438 *********************************************************************/
439 static int action_used_to_be_valid(const char *action)
441 static const char * const formerly_valid_actions[] = {
444 "send-vanilla-wafer",
446 "treat-forbidden-connects-like-blocks",
452 for (i = 0; i < SZ(formerly_valid_actions); i++)
454 if (0 == strcmpic(action, formerly_valid_actions[i]))
463 /*********************************************************************
465 * Function : get_actions
467 * Description : Parses a list of actions.
470 * 1 : line = The string containing the actions.
471 * Will be written to by this function.
472 * 2 : alias_list = Custom alias list, or NULL for none.
473 * 3 : cur_action = Where to store the action. Caller
476 * Returns : JB_ERR_OK => Ok
477 * JB_ERR_PARSE => Parse error (line was trashed anyway)
478 * nonzero => Out of memory (line was trashed anyway)
480 *********************************************************************/
481 jb_err get_actions(char *line,
482 struct action_alias * alias_list,
483 struct action_spec *cur_action)
486 init_action(cur_action);
487 cur_action->mask = ACTION_MASK_ALL;
491 char * option = NULL;
494 err = get_action_token(&line, &option, &value);
502 /* handle option in 'option' */
504 /* Check for standard action name */
505 const struct action_name * action = action_names;
507 while ((action->name != NULL) && (0 != strcmpic(action->name, option)))
511 if (action->name != NULL)
514 cur_action->mask &= action->mask;
515 cur_action->add &= action->mask;
516 cur_action->add |= action->add;
518 switch (action->value_type)
521 /* ignore any option. */
525 /* add single string. */
527 if ((value == NULL) || (*value == '\0'))
529 if (0 == strcmpic(action->name, "+block"))
532 * XXX: Temporary backwards compatibility hack.
533 * XXX: should include line number.
535 value = "No reason specified.";
536 log_error(LOG_LEVEL_ERROR,
537 "block action without reason found. This may "
538 "become a fatal error in future versions.");
545 /* FIXME: should validate option string here */
546 freez (cur_action->string[action->index]);
547 cur_action->string[action->index] = strdup(value);
548 if (NULL == cur_action->string[action->index])
550 return JB_ERR_MEMORY;
556 /* remove single string. */
558 freez (cur_action->string[action->index]);
563 /* append multi string. */
565 struct list * remove_p = cur_action->multi_remove[action->index];
566 struct list * add_p = cur_action->multi_add[action->index];
568 if ((value == NULL) || (*value == '\0'))
573 list_remove_item(remove_p, value);
574 err = enlist_unique(add_p, value, 0);
583 /* remove multi string. */
585 struct list * remove_p = cur_action->multi_remove[action->index];
586 struct list * add_p = cur_action->multi_add[action->index];
588 if ((value == NULL) || (*value == '\0')
589 || ((*value == '*') && (value[1] == '\0')))
592 * no option, or option == "*".
596 list_remove_all(remove_p);
597 list_remove_all(add_p);
598 cur_action->multi_remove_all[action->index] = 1;
602 /* Valid option - remove only 1 option */
604 if (!cur_action->multi_remove_all[action->index])
606 /* there isn't a catch-all in the remove list already */
607 err = enlist_unique(remove_p, value, 0);
613 list_remove_item(add_p, value);
618 /* Shouldn't get here unless there's memory corruption. */
625 /* try user aliases. */
626 const struct action_alias * alias = alias_list;
628 while ((alias != NULL) && (0 != strcmpic(alias->name, option)))
635 merge_actions(cur_action, alias->action);
637 else if (((size_t)2 < strlen(option)) && action_used_to_be_valid(option+1))
639 log_error(LOG_LEVEL_ERROR, "Action '%s' is no longer valid "
640 "in this Privoxy release. Ignored.", option+1);
642 else if (((size_t)2 < strlen(option)) && 0 == strcmpic(option+1, "hide-forwarded-for-headers"))
644 log_error(LOG_LEVEL_FATAL, "The action 'hide-forwarded-for-headers' "
645 "is no longer valid in this Privoxy release. "
646 "Use 'change-x-forwarded-for' instead.");
650 /* Bad action name */
652 * XXX: This is a fatal error and Privoxy will later on exit
653 * in load_one_actions_file() because of an "invalid line".
655 * It would be preferable to name the offending option in that
656 * error message, but currently there is no way to do that and
657 * we have to live with two error messages for basically the
660 log_error(LOG_LEVEL_ERROR, "Unknown action or alias: %s", option);
671 /*********************************************************************
673 * Function : init_current_action
675 * Description : Zero out an action.
678 * 1 : dest = An uninitialized current_action_spec.
682 *********************************************************************/
683 void init_current_action (struct current_action_spec *dest)
685 memset(dest, '\0', sizeof(*dest));
687 dest->flags = ACTION_MOST_COMPATIBLE;
691 /*********************************************************************
693 * Function : init_action
695 * Description : Zero out an action.
698 * 1 : dest = An uninitialized action_spec.
702 *********************************************************************/
703 void init_action (struct action_spec *dest)
705 memset(dest, '\0', sizeof(*dest));
709 /*********************************************************************
711 * Function : merge_current_action
713 * Description : Merge two actions together.
714 * Similar to "dest += src".
715 * Differences between this and merge_actions()
716 * is that this one doesn't allocate memory for
717 * strings (so "src" better be in memory for at least
718 * as long as "dest" is, and you'd better free
719 * "dest" using "free_current_action").
720 * Also, there is no mask or remove lists in dest.
721 * (If we're applying it to a URL, we don't need them)
724 * 1 : dest = Current actions, to modify.
725 * 2 : src = Action to add.
727 * Returns 0 : no error
728 * !=0 : error, probably JB_ERR_MEMORY.
730 *********************************************************************/
731 jb_err merge_current_action (struct current_action_spec *dest,
732 const struct action_spec *src)
735 jb_err err = JB_ERR_OK;
737 dest->flags &= src->mask;
738 dest->flags |= src->add;
740 for (i = 0; i < ACTION_STRING_COUNT; i++)
742 char * str = src->string[i];
745 str = strdup_or_die(str);
746 freez(dest->string[i]);
747 dest->string[i] = str;
751 for (i = 0; i < ACTION_MULTI_COUNT; i++)
753 if (src->multi_remove_all[i])
755 /* Remove everything from dest, then add src->multi_add */
756 err = list_duplicate(dest->multi[i], src->multi_add[i]);
764 list_remove_list(dest->multi[i], src->multi_remove[i]);
765 err = list_append_list_unique(dest->multi[i], src->multi_add[i]);
776 /*********************************************************************
778 * Function : update_action_bits_for_tag
780 * Description : Updates the action bits based on the action sections
781 * whose tag patterns match a provided tag.
784 * 1 : csp = Current client state (buffers, headers, etc...)
785 * 2 : tag = The tag on which the update should be based on
787 * Returns : 0 if no tag matched, or
790 *********************************************************************/
791 int update_action_bits_for_tag(struct client_state *csp, const char *tag)
793 struct file_list *fl;
794 struct url_actions *b;
800 assert(list_contains_item(csp->tags, tag));
802 /* Run through all action files, */
803 for (i = 0; i < MAX_AF_FILES; i++)
805 if (((fl = csp->actions_list[i]) == NULL) || ((b = fl->f) == NULL))
807 /* Skip empty files */
811 /* and through all the action patterns, */
812 for (b = b->next; NULL != b; b = b->next)
814 /* skip everything but TAG patterns, */
815 if (!(b->url->flags & PATTERN_SPEC_TAG_PATTERN))
820 /* and check if one of the tag patterns matches the tag, */
821 if (0 == regexec(b->url->pattern.tag_regex, tag, 0, NULL, 0))
823 /* if it does, update the action bit map, */
824 if (merge_current_action(csp->action, b->action))
826 log_error(LOG_LEVEL_ERROR,
827 "Out of memory while changing action bits");
829 /* and signal the change. */
839 /*********************************************************************
841 * Function : check_negative_tag_patterns
843 * Description : Updates the action bits based on NO-*-TAG patterns.
846 * 1 : csp = Current client state (buffers, headers, etc...)
847 * 2 : flag = The tag pattern type
849 * Returns : JB_ERR_OK in case off success, or
850 * JB_ERR_MEMORY on out-of-memory error.
852 *********************************************************************/
853 jb_err check_negative_tag_patterns(struct client_state *csp, unsigned int flag)
855 struct list_entry *tag;
856 struct file_list *fl;
857 struct url_actions *b = NULL;
860 for (i = 0; i < MAX_AF_FILES; i++)
862 fl = csp->actions_list[i];
863 if ((fl == NULL) || ((b = fl->f) == NULL))
867 for (b = b->next; NULL != b; b = b->next)
870 if (0 == (b->url->flags & flag))
874 for (tag = csp->tags->first; NULL != tag; tag = tag->next)
876 if (0 == regexec(b->url->pattern.tag_regex, tag->str, 0, NULL, 0))
879 * The pattern matches at least one tag, thus the action
880 * section doesn't apply and we don't need to look at the
890 * The pattern doesn't match any tags,
891 * thus the action section applies.
893 if (merge_current_action(csp->action, b->action))
895 log_error(LOG_LEVEL_ERROR,
896 "Out of memory while changing action bits");
897 return JB_ERR_MEMORY;
899 log_error(LOG_LEVEL_HEADER, "Updated action bits based on: %s",
909 /*********************************************************************
911 * Function : free_current_action
913 * Description : Free memory used by a current_action_spec.
914 * Does not free the current_action_spec itself.
917 * 1 : src = Source to free.
921 *********************************************************************/
922 void free_current_action(struct current_action_spec *src)
926 for (i = 0; i < ACTION_STRING_COUNT; i++)
928 freez(src->string[i]);
931 for (i = 0; i < ACTION_MULTI_COUNT; i++)
933 destroy_list(src->multi[i]);
936 memset(src, '\0', sizeof(*src));
940 static struct file_list *current_actions_file[MAX_AF_FILES] = {
941 NULL, NULL, NULL, NULL, NULL,
942 NULL, NULL, NULL, NULL, NULL
946 #ifdef FEATURE_GRACEFUL_TERMINATION
947 /*********************************************************************
949 * Function : unload_current_actions_file
951 * Description : Unloads current actions file - reset to state at
952 * beginning of program.
958 *********************************************************************/
959 void unload_current_actions_file(void)
963 for (i = 0; i < MAX_AF_FILES; i++)
965 if (current_actions_file[i])
967 current_actions_file[i]->unloader = unload_actions_file;
968 current_actions_file[i] = NULL;
972 #endif /* FEATURE_GRACEFUL_TERMINATION */
975 /*********************************************************************
977 * Function : unload_actions_file
979 * Description : Unloads an actions module.
982 * 1 : file_data = the data structure associated with the
987 *********************************************************************/
988 void unload_actions_file(void *file_data)
990 struct url_actions * next;
991 struct url_actions * cur = (struct url_actions *)file_data;
995 free_pattern_spec(cur->url);
996 if ((next == NULL) || (next->action != cur->action))
999 * As the action settings might be shared,
1000 * we can only free them if the current
1001 * url pattern is the last one, or if the
1002 * next one is using different settings.
1004 free_action_spec(cur->action);
1012 /*********************************************************************
1014 * Function : free_alias_list
1016 * Description : Free memory used by a list of aliases.
1019 * 1 : alias_list = Linked list to free.
1023 *********************************************************************/
1024 void free_alias_list(struct action_alias *alias_list)
1026 while (alias_list != NULL)
1028 struct action_alias * next = alias_list->next;
1029 alias_list->next = NULL;
1030 freez(alias_list->name);
1031 free_action(alias_list->action);
1038 /*********************************************************************
1040 * Function : load_action_files
1042 * Description : Read and parse all the action files and add to files
1046 * 1 : csp = Current client state (buffers, headers, etc...)
1048 * Returns : 0 => Ok, everything else is an error.
1050 *********************************************************************/
1051 int load_action_files(struct client_state *csp)
1056 for (i = 0; i < MAX_AF_FILES; i++)
1058 if (csp->config->actions_file[i])
1060 result = load_one_actions_file(csp, i);
1066 else if (current_actions_file[i])
1068 current_actions_file[i]->unloader = unload_actions_file;
1069 current_actions_file[i] = NULL;
1077 /*********************************************************************
1079 * Function : referenced_filters_are_missing
1081 * Description : Checks if any filters of a certain type referenced
1082 * in an action spec are missing.
1085 * 1 : csp = Current client state (buffers, headers, etc...)
1086 * 2 : cur_action = The action spec to check.
1087 * 3 : multi_index = The index where to look for the filter.
1088 * 4 : filter_type = The filter type the caller is interested in.
1090 * Returns : 0 => All referenced filters exists, everything else is an error.
1092 *********************************************************************/
1093 static int referenced_filters_are_missing(const struct client_state *csp,
1094 const struct action_spec *cur_action, int multi_index, enum filter_type filter_type)
1096 struct list_entry *filtername;
1098 for (filtername = cur_action->multi_add[multi_index]->first;
1099 filtername; filtername = filtername->next)
1101 if (NULL == get_filter(csp, filtername->str, filter_type))
1103 log_error(LOG_LEVEL_ERROR, "Missing filter '%s'", filtername->str);
1113 /*********************************************************************
1115 * Function : action_spec_is_valid
1117 * Description : Should eventually figure out if an action spec
1118 * is valid, but currently only checks that the
1119 * referenced filters are accounted for.
1122 * 1 : csp = Current client state (buffers, headers, etc...)
1123 * 2 : cur_action = The action spec to check.
1125 * Returns : 0 => No problems detected, everything else is an error.
1127 *********************************************************************/
1128 static int action_spec_is_valid(struct client_state *csp, const struct action_spec *cur_action)
1132 enum filter_type filter_type;
1134 {ACTION_MULTI_FILTER, FT_CONTENT_FILTER},
1135 {ACTION_MULTI_CLIENT_HEADER_FILTER, FT_CLIENT_HEADER_FILTER},
1136 {ACTION_MULTI_SERVER_HEADER_FILTER, FT_SERVER_HEADER_FILTER},
1137 {ACTION_MULTI_CLIENT_HEADER_TAGGER, FT_CLIENT_HEADER_TAGGER},
1138 {ACTION_MULTI_SERVER_HEADER_TAGGER, FT_SERVER_HEADER_TAGGER}
1143 for (i = 0; i < SZ(filter_map); i++)
1145 errors += referenced_filters_are_missing(csp, cur_action,
1146 filter_map[i].multi_index, filter_map[i].filter_type);
1154 /*********************************************************************
1156 * Function : load_one_actions_file
1158 * Description : Read and parse a action file and add to files
1162 * 1 : csp = Current client state (buffers, headers, etc...)
1163 * 2 : fileid = File index to load.
1165 * Returns : 0 => Ok, everything else is an error.
1167 *********************************************************************/
1168 static int load_one_actions_file(struct client_state *csp, int fileid)
1173 * Note: Keep these in the order they occur in the file, they are
1174 * sometimes tested with <=
1177 MODE_START_OF_FILE = 1,
1179 MODE_DESCRIPTION = 3,
1185 struct url_actions *last_perm;
1186 struct url_actions *perm;
1188 struct file_list *fs;
1189 struct action_spec * cur_action = NULL;
1190 int cur_action_used = 0;
1191 struct action_alias * alias_list = NULL;
1192 unsigned long linenum = 0;
1193 mode = MODE_START_OF_FILE;
1195 if (!check_file_changed(current_actions_file[fileid], csp->config->actions_file[fileid], &fs))
1197 /* No need to load */
1198 csp->actions_list[fileid] = current_actions_file[fileid];
1203 log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': %E. "
1204 "Note that beginning with Privoxy 3.0.7, actions files have to be specified "
1205 "with their complete file names.", csp->config->actions_file[fileid]);
1206 return 1; /* never get here */
1209 fs->f = last_perm = (struct url_actions *)zalloc(sizeof(*last_perm));
1210 if (last_perm == NULL)
1212 log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': out of memory!",
1213 csp->config->actions_file[fileid]);
1214 return 1; /* never get here */
1217 if ((fp = fopen(csp->config->actions_file[fileid], "r")) == NULL)
1219 log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': error opening file: %E",
1220 csp->config->actions_file[fileid]);
1221 return 1; /* never get here */
1224 log_error(LOG_LEVEL_INFO, "Loading actions file: %s", csp->config->actions_file[fileid]);
1226 while (read_config_line(fp, &linenum, &buf) != NULL)
1230 /* It's a header block */
1233 /* It's {{settings}} or {{alias}} */
1234 size_t len = strlen(buf);
1235 char * start = buf + 2;
1236 char * end = buf + len - 1;
1237 if ((len < (size_t)5) || (*end-- != '}') || (*end-- != '}'))
1241 log_error(LOG_LEVEL_FATAL,
1242 "can't load actions file '%s': invalid line (%lu): %s",
1243 csp->config->actions_file[fileid], linenum, buf);
1244 return 1; /* never get here */
1247 /* Trim leading and trailing whitespace. */
1255 log_error(LOG_LEVEL_FATAL,
1256 "can't load actions file '%s': invalid line (%lu): {{ }}",
1257 csp->config->actions_file[fileid], linenum);
1258 return 1; /* never get here */
1262 * An actionsfile can optionally contain the following blocks.
1263 * They *MUST* be in this order, to simplify processing:
1269 * ...free text, format TBD, but no line may start with a '{'...
1274 * The actual actions must be *after* these special blocks.
1275 * None of these special blocks may be repeated.
1278 if (0 == strcmpic(start, "settings"))
1280 /* it's a {{settings}} block */
1281 if (mode >= MODE_SETTINGS)
1283 /* {{settings}} must be first thing in file and must only
1287 log_error(LOG_LEVEL_FATAL,
1288 "can't load actions file '%s': line %lu: {{settings}} must only appear once, and it must be before anything else.",
1289 csp->config->actions_file[fileid], linenum);
1291 mode = MODE_SETTINGS;
1293 else if (0 == strcmpic(start, "description"))
1295 /* it's a {{description}} block */
1296 if (mode >= MODE_DESCRIPTION)
1298 /* {{description}} is a singleton and only {{settings}} may proceed it
1301 log_error(LOG_LEVEL_FATAL,
1302 "can't load actions file '%s': line %lu: {{description}} must only appear once, and only a {{settings}} block may be above it.",
1303 csp->config->actions_file[fileid], linenum);
1305 mode = MODE_DESCRIPTION;
1307 else if (0 == strcmpic(start, "alias"))
1309 /* it's an {{alias}} block */
1310 if (mode >= MODE_ALIAS)
1312 /* {{alias}} must be first thing in file, possibly after
1313 * {{settings}} and {{description}}
1315 * {{alias}} must only appear once.
1317 * Note that these are new restrictions introduced in
1318 * v2.9.10 in order to make actionsfile editing simpler.
1319 * (Otherwise, reordering actionsfile entries without
1320 * completely rewriting the file becomes non-trivial)
1323 log_error(LOG_LEVEL_FATAL,
1324 "can't load actions file '%s': line %lu: {{alias}} must only appear once, and it must be before all actions.",
1325 csp->config->actions_file[fileid], linenum);
1331 /* invalid {{something}} block */
1333 log_error(LOG_LEVEL_FATAL,
1334 "can't load actions file '%s': invalid line (%lu): {{%s}}",
1335 csp->config->actions_file[fileid], linenum, start);
1336 return 1; /* never get here */
1341 /* It's an actions block */
1347 mode = MODE_ACTIONS;
1349 /* free old action */
1352 if (!cur_action_used)
1354 free_action_spec(cur_action);
1358 cur_action_used = 0;
1359 cur_action = (struct action_spec *)zalloc(sizeof(*cur_action));
1360 if (cur_action == NULL)
1363 log_error(LOG_LEVEL_FATAL,
1364 "can't load actions file '%s': out of memory",
1365 csp->config->actions_file[fileid]);
1366 return 1; /* never get here */
1368 init_action(cur_action);
1371 * Copy the buffer before messing with it as we may need the
1372 * unmodified version in for the fatal error messages. Given
1373 * that this is not a common event, we could instead simply
1374 * read the line again.
1376 * buf + 1 to skip the leading '{'
1378 actions_buf = strdup_or_die(buf + 1);
1380 /* check we have a trailing } and then trim it */
1381 end = actions_buf + strlen(actions_buf) - 1;
1387 log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': "
1388 "Missing trailing '}' in action section starting at line (%lu): %s",
1389 csp->config->actions_file[fileid], linenum, buf);
1390 return 1; /* never get here */
1394 /* trim any whitespace immediately inside {} */
1397 if (get_actions(actions_buf, alias_list, cur_action))
1402 log_error(LOG_LEVEL_FATAL, "can't load actions file '%s': "
1403 "can't completely parse the action section starting at line (%lu): %s",
1404 csp->config->actions_file[fileid], linenum, buf);
1405 return 1; /* never get here */
1408 if (action_spec_is_valid(csp, cur_action))
1410 log_error(LOG_LEVEL_ERROR, "Invalid action section in file '%s', "
1411 "starting at line %lu: %s",
1412 csp->config->actions_file[fileid], linenum, buf);
1418 else if (mode == MODE_SETTINGS)
1421 * Part of the {{settings}} block.
1422 * For now only serves to check if the file's minimum Privoxy
1423 * version requirement is met, but we may want to read & check
1424 * permissions when we go multi-user.
1426 if (!strncmp(buf, "for-privoxy-version=", 20))
1428 char *version_string, *fields[3];
1431 version_string = strdup_or_die(buf + 20);
1433 num_fields = ssplit(version_string, ".", fields, SZ(fields));
1435 if (num_fields < 1 || atoi(fields[0]) == 0)
1437 log_error(LOG_LEVEL_ERROR,
1438 "While loading actions file '%s': invalid line (%lu): %s",
1439 csp->config->actions_file[fileid], linenum, buf);
1441 else if ( (atoi(fields[0]) > VERSION_MAJOR)
1442 || ((num_fields > 1) && (atoi(fields[1]) > VERSION_MINOR))
1443 || ((num_fields > 2) && (atoi(fields[2]) > VERSION_POINT)))
1446 log_error(LOG_LEVEL_FATAL,
1447 "Actions file '%s', line %lu requires newer Privoxy version: %s",
1448 csp->config->actions_file[fileid], linenum, buf);
1449 return 1; /* never get here */
1451 free(version_string);
1454 else if (mode == MODE_DESCRIPTION)
1457 * Part of the {{description}} block.
1461 else if (mode == MODE_ALIAS)
1466 char actions_buf[BUFFER_SIZE];
1467 struct action_alias * new_alias;
1469 char * start = strchr(buf, '=');
1472 if ((start == NULL) || (start == buf))
1474 log_error(LOG_LEVEL_FATAL,
1475 "can't load actions file '%s': invalid alias line (%lu): %s",
1476 csp->config->actions_file[fileid], linenum, buf);
1477 return 1; /* never get here */
1480 if ((new_alias = zalloc(sizeof(*new_alias))) == NULL)
1483 log_error(LOG_LEVEL_FATAL,
1484 "can't load actions file '%s': out of memory!",
1485 csp->config->actions_file[fileid]);
1486 return 1; /* never get here */
1489 /* Eat any the whitespace before the '=' */
1491 while ((*end == ' ') || (*end == '\t'))
1494 * we already know we must have at least 1 non-ws char
1495 * at start of buf - no need to check
1501 /* Eat any the whitespace after the '=' */
1503 while ((*start == ' ') || (*start == '\t'))
1509 log_error(LOG_LEVEL_FATAL,
1510 "can't load actions file '%s': invalid alias line (%lu): %s",
1511 csp->config->actions_file[fileid], linenum, buf);
1512 return 1; /* never get here */
1515 new_alias->name = strdup_or_die(buf);
1517 strlcpy(actions_buf, start, sizeof(actions_buf));
1519 if (get_actions(actions_buf, alias_list, new_alias->action))
1523 log_error(LOG_LEVEL_FATAL,
1524 "can't load actions file '%s': invalid alias line (%lu): %s = %s",
1525 csp->config->actions_file[fileid], linenum, buf, start);
1526 return 1; /* never get here */
1530 new_alias->next = alias_list;
1531 alias_list = new_alias;
1533 else if (mode == MODE_ACTIONS)
1535 /* it's an URL pattern */
1537 /* allocate a new node */
1538 if ((perm = zalloc(sizeof(*perm))) == NULL)
1541 log_error(LOG_LEVEL_FATAL,
1542 "can't load actions file '%s': out of memory!",
1543 csp->config->actions_file[fileid]);
1544 return 1; /* never get here */
1547 perm->action = cur_action;
1548 cur_action_used = 1;
1550 /* Save the URL pattern */
1551 if (create_pattern_spec(perm->url, buf))
1554 log_error(LOG_LEVEL_FATAL,
1555 "can't load actions file '%s': line %lu: cannot create URL or TAG pattern from: %s",
1556 csp->config->actions_file[fileid], linenum, buf);
1557 return 1; /* never get here */
1560 /* add it to the list */
1561 last_perm->next = perm;
1564 else if (mode == MODE_START_OF_FILE)
1566 /* oops - please have a {} line as 1st line in file. */
1568 log_error(LOG_LEVEL_FATAL,
1569 "can't load actions file '%s': line %lu should begin with a '{': %s",
1570 csp->config->actions_file[fileid], linenum, buf);
1571 return 1; /* never get here */
1575 /* How did we get here? This is impossible! */
1577 log_error(LOG_LEVEL_FATAL,
1578 "can't load actions file '%s': INTERNAL ERROR - mode = %d",
1579 csp->config->actions_file[fileid], mode);
1580 return 1; /* never get here */
1587 if (!cur_action_used)
1589 free_action_spec(cur_action);
1591 free_alias_list(alias_list);
1593 /* the old one is now obsolete */
1594 if (current_actions_file[fileid])
1596 current_actions_file[fileid]->unloader = unload_actions_file;
1599 fs->next = files->next;
1601 current_actions_file[fileid] = fs;
1603 csp->actions_list[fileid] = fs;
1610 /*********************************************************************
1612 * Function : actions_to_text
1614 * Description : Converts a actionsfile entry from the internal
1615 * structure into a text line. The output is split
1616 * into one line for each action with line continuation.
1619 * 1 : action = The action to format.
1621 * Returns : A string. Caller must free it.
1622 * NULL on out-of-memory error.
1624 *********************************************************************/
1625 char * actions_to_text(const struct action_spec *action)
1627 unsigned long mask = action->mask;
1628 unsigned long add = action->add;
1629 char *result = strdup_or_die("");
1630 struct list_entry * lst;
1632 /* sanity - prevents "-feature +feature" */
1636 #define DEFINE_ACTION_BOOL(__name, __bit) \
1637 if (!(mask & __bit)) \
1639 string_append(&result, " -" __name " \\\n"); \
1641 else if (add & __bit) \
1643 string_append(&result, " +" __name " \\\n"); \
1646 #define DEFINE_ACTION_STRING(__name, __bit, __index) \
1647 if (!(mask & __bit)) \
1649 string_append(&result, " -" __name " \\\n"); \
1651 else if (add & __bit) \
1653 string_append(&result, " +" __name "{"); \
1654 string_append(&result, action->string[__index]); \
1655 string_append(&result, "} \\\n"); \
1658 #define DEFINE_ACTION_MULTI(__name, __index) \
1659 if (action->multi_remove_all[__index]) \
1661 string_append(&result, " -" __name " \\\n"); \
1665 lst = action->multi_remove[__index]->first; \
1668 string_append(&result, " -" __name "{"); \
1669 string_append(&result, lst->str); \
1670 string_append(&result, "} \\\n"); \
1674 lst = action->multi_add[__index]->first; \
1677 string_append(&result, " +" __name "{"); \
1678 string_append(&result, lst->str); \
1679 string_append(&result, "} \\\n"); \
1683 #define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
1685 #include "actionlist.h"
1687 #undef DEFINE_ACTION_MULTI
1688 #undef DEFINE_ACTION_STRING
1689 #undef DEFINE_ACTION_BOOL
1690 #undef DEFINE_ACTION_ALIAS
1696 /*********************************************************************
1698 * Function : actions_to_html
1700 * Description : Converts a actionsfile entry from numeric form
1701 * ("mask" and "add") to a <br>-separated HTML string
1702 * in which each action is linked to its chapter in
1706 * 1 : csp = Client state (for config)
1707 * 2 : action = Action spec to be converted
1709 * Returns : A string. Caller must free it.
1710 * NULL on out-of-memory error.
1712 *********************************************************************/
1713 char * actions_to_html(const struct client_state *csp,
1714 const struct action_spec *action)
1716 unsigned long mask = action->mask;
1717 unsigned long add = action->add;
1718 char *result = strdup_or_die("");
1719 struct list_entry * lst;
1721 /* sanity - prevents "-feature +feature" */
1725 #define DEFINE_ACTION_BOOL(__name, __bit) \
1726 if (!(mask & __bit)) \
1728 string_append(&result, "\n<br>-"); \
1729 string_join(&result, add_help_link(__name, csp->config)); \
1731 else if (add & __bit) \
1733 string_append(&result, "\n<br>+"); \
1734 string_join(&result, add_help_link(__name, csp->config)); \
1737 #define DEFINE_ACTION_STRING(__name, __bit, __index) \
1738 if (!(mask & __bit)) \
1740 string_append(&result, "\n<br>-"); \
1741 string_join(&result, add_help_link(__name, csp->config)); \
1743 else if (add & __bit) \
1745 string_append(&result, "\n<br>+"); \
1746 string_join(&result, add_help_link(__name, csp->config)); \
1747 string_append(&result, "{"); \
1748 string_join(&result, html_encode(action->string[__index])); \
1749 string_append(&result, "}"); \
1752 #define DEFINE_ACTION_MULTI(__name, __index) \
1753 if (action->multi_remove_all[__index]) \
1755 string_append(&result, "\n<br>-"); \
1756 string_join(&result, add_help_link(__name, csp->config)); \
1760 lst = action->multi_remove[__index]->first; \
1763 string_append(&result, "\n<br>-"); \
1764 string_join(&result, add_help_link(__name, csp->config)); \
1765 string_append(&result, "{"); \
1766 string_join(&result, html_encode(lst->str)); \
1767 string_append(&result, "}"); \
1771 lst = action->multi_add[__index]->first; \
1774 string_append(&result, "\n<br>+"); \
1775 string_join(&result, add_help_link(__name, csp->config)); \
1776 string_append(&result, "{"); \
1777 string_join(&result, html_encode(lst->str)); \
1778 string_append(&result, "}"); \
1782 #define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
1784 #include "actionlist.h"
1786 #undef DEFINE_ACTION_MULTI
1787 #undef DEFINE_ACTION_STRING
1788 #undef DEFINE_ACTION_BOOL
1789 #undef DEFINE_ACTION_ALIAS
1791 /* trim leading <br> */
1792 if (result && *result)
1795 result = strdup(result + 5);
1803 /*********************************************************************
1805 * Function : current_actions_to_html
1807 * Description : Converts a curren action spec to a <br> separated HTML
1808 * text in which each action is linked to its chapter in
1812 * 1 : csp = Client state (for config)
1813 * 2 : action = Current action spec to be converted
1815 * Returns : A string. Caller must free it.
1816 * NULL on out-of-memory error.
1818 *********************************************************************/
1819 char *current_action_to_html(const struct client_state *csp,
1820 const struct current_action_spec *action)
1822 unsigned long flags = action->flags;
1823 struct list_entry * lst;
1824 char *result = strdup_or_die("");
1825 char *active = strdup_or_die("");
1826 char *inactive = strdup_or_die("");
1828 #define DEFINE_ACTION_BOOL(__name, __bit) \
1829 if (flags & __bit) \
1831 string_append(&active, "\n<br>+"); \
1832 string_join(&active, add_help_link(__name, csp->config)); \
1836 string_append(&inactive, "\n<br>-"); \
1837 string_join(&inactive, add_help_link(__name, csp->config)); \
1840 #define DEFINE_ACTION_STRING(__name, __bit, __index) \
1841 if (flags & __bit) \
1843 string_append(&active, "\n<br>+"); \
1844 string_join(&active, add_help_link(__name, csp->config)); \
1845 string_append(&active, "{"); \
1846 string_join(&active, html_encode(action->string[__index])); \
1847 string_append(&active, "}"); \
1851 string_append(&inactive, "\n<br>-"); \
1852 string_join(&inactive, add_help_link(__name, csp->config)); \
1855 #define DEFINE_ACTION_MULTI(__name, __index) \
1856 lst = action->multi[__index]->first; \
1859 string_append(&inactive, "\n<br>-"); \
1860 string_join(&inactive, add_help_link(__name, csp->config)); \
1866 string_append(&active, "\n<br>+"); \
1867 string_join(&active, add_help_link(__name, csp->config)); \
1868 string_append(&active, "{"); \
1869 string_join(&active, html_encode(lst->str)); \
1870 string_append(&active, "}"); \
1875 #define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
1877 #include "actionlist.h"
1879 #undef DEFINE_ACTION_MULTI
1880 #undef DEFINE_ACTION_STRING
1881 #undef DEFINE_ACTION_BOOL
1882 #undef DEFINE_ACTION_ALIAS
1886 string_append(&result, active);
1889 string_append(&result, "\n<br>");
1890 if (inactive != NULL)
1892 string_append(&result, inactive);
1899 /*********************************************************************
1901 * Function : action_to_line_of_text
1903 * Description : Converts a action spec to a single text line
1904 * listing the enabled actions.
1907 * 1 : action = Current action spec to be converted
1909 * Returns : A string. Caller must free it.
1910 * Out-of-memory errors are fatal.
1912 *********************************************************************/
1913 char *actions_to_line_of_text(const struct current_action_spec *action)
1916 struct list_entry *lst;
1918 const unsigned long flags = action->flags;
1920 active = strdup_or_die("");
1922 #define DEFINE_ACTION_BOOL(__name, __bit) \
1923 if (flags & __bit) \
1925 snprintf(buffer, sizeof(buffer), "+%s ", __name); \
1926 string_append(&active, buffer); \
1929 #define DEFINE_ACTION_STRING(__name, __bit, __index) \
1930 if (flags & __bit) \
1932 snprintf(buffer, sizeof(buffer), "+%s{%s} ", \
1933 __name, action->string[__index]); \
1934 string_append(&active, buffer); \
1937 #define DEFINE_ACTION_MULTI(__name, __index) \
1938 lst = action->multi[__index]->first; \
1939 while (lst != NULL) \
1941 snprintf(buffer, sizeof(buffer), "+%s{%s} ", \
1942 __name, lst->str); \
1943 string_append(&active, buffer); \
1947 #define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
1949 #include "actionlist.h"
1951 #undef DEFINE_ACTION_MULTI
1952 #undef DEFINE_ACTION_STRING
1953 #undef DEFINE_ACTION_BOOL
1954 #undef DEFINE_ACTION_ALIAS
1958 log_error(LOG_LEVEL_FATAL, "Out of memory in action_to_line_of_text()");