const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.133 2012/10/21 12:32:21 fabiankeil Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/loadcfg.c,v $ * * Purpose : Loads settings from the configuration file into * global variables. This file contains both the * routine to load the configuration and the global * variables it writes to. * * Copyright : Written by and Copyright (C) 2001-2009 the * Privoxy team. http://www.privoxy.org/ * * Based on the Internet Junkbuster originally written * by and Copyright (C) 1997 Anonymous Coders and * Junkbusters Corporation. http://www.junkbusters.com * * 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 * your option) any later version. * * This program is distributed in the hope that it will * be useful, but WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public * License for more details. * * The GNU General Public License should be included with * this file. If not, you can view it at * http://www.gnu.org/copyleft/gpl.html * or write to the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * *********************************************************************/ #include "config.h" #include #include #include #include #include #include #include #include #include #ifdef _WIN32 # ifndef STRICT # define STRICT # endif # include # include "win32.h" # ifndef _WIN_CONSOLE # include "w32log.h" # endif /* ndef _WIN_CONSOLE */ #else /* ifndef _WIN32 */ #ifndef __OS2__ # include # include #endif # include # include # include #endif #include "project.h" #include "loadcfg.h" #include "list.h" #include "jcc.h" #include "filters.h" #include "loaders.h" #include "miscutil.h" #include "errlog.h" #include "ssplit.h" #include "encode.h" #include "urlmatch.h" #include "cgi.h" #include "gateway.h" const char loadcfg_h_rcs[] = LOADCFG_H_VERSION; #ifdef FEATURE_TOGGLE /* Privoxy is enabled by default. */ int global_toggle_state = 1; #endif /* def FEATURE_TOGGLE */ /* The filename of the configfile */ const char *configfile = NULL; /* * CGI functions will later need access to the invocation args, * so we will make argc and argv global. */ int Argc = 0; char * const * Argv = NULL; static struct file_list *current_configfile = NULL; /* * This takes the "cryptic" hash of each keyword and aliases them to * something a little more readable. This also makes changing the * hash values easier if they should change or the hash algorthm changes. * Use the included "hash" program to find out what the hash will be * for any string supplied on the command line. (Or just put it in the * config file and read the number from the error message in the log). * * Please keep this list sorted alphabetically (but with the Windows * console and GUI specific options last). */ #define hash_actions_file 1196306641U /* "actionsfile" */ #define hash_accept_intercepted_requests 1513024973U /* "accept-intercepted-requests" */ #define hash_admin_address 4112573064U /* "admin-address" */ #define hash_allow_cgi_request_crunching 258915987U /* "allow-cgi-request-crunching" */ #define hash_buffer_limit 1881726070U /* "buffer-limit */ #define hash_client_header_order 2701453514U /* "client-header-order" */ #define hash_compression_level 2464423563U /* "compression-level" */ #define hash_confdir 1978389U /* "confdir" */ #define hash_connection_sharing 1348841265U /* "connection-sharing" */ #define hash_debug 78263U /* "debug" */ #define hash_default_server_timeout 2530089913U /* "default-server-timeout" */ #define hash_deny_access 1227333715U /* "deny-access" */ #define hash_enable_edit_actions 2517097536U /* "enable-edit-actions" */ #define hash_enable_compression 3943696946U /* "enable-compression" */ #define hash_enable_remote_toggle 2979744683U /* "enable-remote-toggle" */ #define hash_enable_remote_http_toggle 110543988U /* "enable-remote-http-toggle" */ #define hash_enforce_blocks 1862427469U /* "enforce-blocks" */ #define hash_filterfile 250887266U /* "filterfile" */ #define hash_forward 2029845U /* "forward" */ #define hash_forward_socks4 3963965521U /* "forward-socks4" */ #define hash_forward_socks4a 2639958518U /* "forward-socks4a" */ #define hash_forward_socks5 3963965522U /* "forward-socks5" */ #define hash_forwarded_connect_retries 101465292U /* "forwarded-connect-retries" */ #define hash_handle_as_empty_returns_ok 1444873247U /* "handle-as-empty-doc-returns-ok" */ #define hash_hostname 10308071U /* "hostname" */ #define hash_keep_alive_timeout 3878599515U /* "keep-alive-timeout" */ #define hash_listen_address 1255650842U /* "listen-address" */ #define hash_logdir 422889U /* "logdir" */ #define hash_logfile 2114766U /* "logfile" */ #define hash_max_client_connections 3595884446U /* "max-client-connections" */ #define hash_permit_access 3587953268U /* "permit-access" */ #define hash_proxy_info_url 3903079059U /* "proxy-info-url" */ #define hash_single_threaded 4250084780U /* "single-threaded" */ #define hash_socket_timeout 1809001761U /* "socket-timeout" */ #define hash_split_large_cgi_forms 671658948U /* "split-large-cgi-forms" */ #define hash_suppress_blocklists 1948693308U /* "suppress-blocklists" */ #define hash_templdir 11067889U /* "templdir" */ #define hash_tolerate_pipelining 1360286620U /* "tolerate-pipelining" */ #define hash_toggle 447966U /* "toggle" */ #define hash_trust_info_url 430331967U /* "trust-info-url" */ #define hash_trustfile 56494766U /* "trustfile" */ #define hash_usermanual 1416668518U /* "user-manual" */ #define hash_activity_animation 1817904738U /* "activity-animation" */ #define hash_close_button_minimizes 3651284693U /* "close-button-minimizes" */ #define hash_hide_console 2048809870U /* "hide-console" */ #define hash_log_buffer_size 2918070425U /* "log-buffer-size" */ #define hash_log_font_name 2866730124U /* "log-font-name" */ #define hash_log_font_size 2866731014U /* "log-font-size" */ #define hash_log_highlight_messages 4032101240U /* "log-highlight-messages" */ #define hash_log_max_lines 2868344173U /* "log-max-lines" */ #define hash_log_messages 2291744899U /* "log-messages" */ #define hash_show_on_task_bar 215410365U /* "show-on-task-bar" */ static void savearg(char *command, char *argument, struct configuration_spec * config); /********************************************************************* * * Function : unload_configfile * * Description : Free the config structure and all components. * * Parameters : * 1 : data: struct configuration_spec to unload * * Returns : N/A * *********************************************************************/ static void unload_configfile (void * data) { struct configuration_spec * config = (struct configuration_spec *)data; struct forward_spec *cur_fwd = config->forward; int i; #ifdef FEATURE_ACL struct access_control_list *cur_acl = config->acl; while (cur_acl != NULL) { struct access_control_list * next_acl = cur_acl->next; free(cur_acl); cur_acl = next_acl; } config->acl = NULL; #endif /* def FEATURE_ACL */ while (cur_fwd != NULL) { struct forward_spec * next_fwd = cur_fwd->next; free_url_spec(cur_fwd->url); freez(cur_fwd->gateway_host); freez(cur_fwd->forward_host); free(cur_fwd); cur_fwd = next_fwd; } config->forward = NULL; freez(config->confdir); freez(config->logdir); freez(config->templdir); freez(config->hostname); for (i = 0; i < MAX_LISTENING_SOCKETS; i++) { freez(config->haddr[i]); } freez(config->logfile); for (i = 0; i < MAX_AF_FILES; i++) { freez(config->actions_file_short[i]); freez(config->actions_file[i]); freez(config->re_filterfile_short[i]); freez(config->re_filterfile[i]); } list_remove_all(config->ordered_client_headers); freez(config->admin_address); freez(config->proxy_info_url); freez(config->proxy_args); freez(config->usermanual); #ifdef FEATURE_TRUST freez(config->trustfile); list_remove_all(config->trust_info); #endif /* def FEATURE_TRUST */ freez(config); } #ifdef FEATURE_GRACEFUL_TERMINATION /********************************************************************* * * Function : unload_current_config_file * * Description : Unloads current config file - reset to state at * beginning of program. * * Parameters : None * * Returns : N/A * *********************************************************************/ void unload_current_config_file(void) { if (current_configfile) { current_configfile->unloader = unload_configfile; current_configfile = NULL; } } #endif /********************************************************************* * * Function : parse_toggle_value * * Description : Parse the value of a directive that can only be * enabled or disabled. Terminates with a fatal error * if the value is NULL or something other than 0 or 1. * * Parameters : * 1 : name: The name of the directive. Used for log messages. * 2 : value: The value to parse * * * Returns : The numerical toggle state * *********************************************************************/ static int parse_toggle_state(const char *name, const char *value) { int toggle_state; assert(name != NULL); assert(value != NULL); if ((value == NULL) || (*value == '\0')) { log_error(LOG_LEVEL_FATAL, "Directive %s used without argument", name); } toggle_state = atoi(value); /* * Also check the length as atoi() doesn't mind * garbage after a valid integer, but we do. */ if (((toggle_state != 0) && (toggle_state != 1)) || (strlen(value) != 1)) { log_error(LOG_LEVEL_FATAL, "Directive %s used with invalid argument '%s'. Use either '0' or '1'.", name, value); } return toggle_state; } /********************************************************************* * * Function : parse_client_header_order * * Description : Parse the value of the header-order directive * * Parameters : * 1 : ordered_header_list: List to insert the ordered * headers into. * 2 : ordered_headers: The ordered header names separated * by spaces or tabs. * * * Returns : N/A * *********************************************************************/ static void parse_client_header_order(struct list *ordered_header_list, const char *ordered_headers) { char *original_headers_copy; char **vector; size_t max_segments; int number_of_headers; int i; assert(ordered_header_list != NULL); assert(ordered_headers != NULL); if (ordered_headers == NULL) { log_error(LOG_LEVEL_FATAL, "header-order used without argument"); } /* * XXX: This estimate is guaranteed to be high enough as we * let ssplit() ignore empty fields, but also a bit wasteful. * The same hack is used in get_last_url() so it looks like * a real solution is needed. */ max_segments = strlen(ordered_headers) / 2; if (max_segments == 0) { max_segments = 1; } vector = malloc_or_die(max_segments * sizeof(char *)); original_headers_copy = strdup_or_die(ordered_headers); number_of_headers = ssplit(original_headers_copy, "\t ", vector, max_segments); if (number_of_headers == -1) { log_error(LOG_LEVEL_FATAL, "Failed to split ordered headers"); } for (i = 0; i < number_of_headers; i++) { if (JB_ERR_OK != enlist(ordered_header_list, vector[i])) { log_error(LOG_LEVEL_FATAL, "Failed to enlist ordered header: %s", vector[i]); } } freez(vector); freez(original_headers_copy); return; } /********************************************************************* * * Function : load_config * * Description : Load the config file and all parameters. * * XXX: more than thousand lines long * and thus in serious need of refactoring. * * Parameters : None * * Returns : The configuration_spec, or NULL on error. * *********************************************************************/ struct configuration_spec * load_config(void) { char *buf = NULL; char *p, *q; FILE *configfp = NULL; struct configuration_spec * config = NULL; struct client_state * fake_csp; struct file_list *fs; unsigned long linenum = 0; int i; char *logfile = NULL; if (!check_file_changed(current_configfile, configfile, &fs)) { /* No need to load */ return ((struct configuration_spec *)current_configfile->f); } if (NULL == fs) { log_error(LOG_LEVEL_FATAL, "can't check configuration file '%s': %E", configfile); return NULL; } if (NULL != current_configfile) { log_error(LOG_LEVEL_INFO, "Reloading configuration file '%s'", configfile); } #ifdef FEATURE_TOGGLE global_toggle_state = 1; #endif /* def FEATURE_TOGGLE */ fs->f = config = (struct configuration_spec *)zalloc(sizeof(*config)); if (NULL == config) { freez(fs->filename); freez(fs); log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); return NULL; } /* * This is backwards from how it's usually done. * Following the usual pattern, "fs" would be stored in a member * variable in "csp", and then we'd access "config" from "fs->f", * using a cast. However, "config" is used so often that a * cast each time would be very ugly, and the extra indirection * would waste CPU cycles. Therefore we store "config" in * "csp->config", and "fs" in "csp->config->config_file_list". */ config->config_file_list = fs; /* * Set to defaults */ config->multi_threaded = 1; config->buffer_limit = 4096 * 1024; config->usermanual = strdup(USER_MANUAL_URL); config->proxy_args = strdup(""); config->forwarded_connect_retries = 0; config->max_client_connections = 0; config->socket_timeout = 300; /* XXX: Should be a macro. */ #ifdef FEATURE_CONNECTION_KEEP_ALIVE config->default_server_timeout = 0; config->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TIMEOUT; config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE; config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_SHARING; #endif config->feature_flags &= ~RUNTIME_FEATURE_CGI_TOGGLE; config->feature_flags &= ~RUNTIME_FEATURE_SPLIT_LARGE_FORMS; config->feature_flags &= ~RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS; config->feature_flags &= ~RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK; #ifdef FEATURE_COMPRESSION config->feature_flags &= ~RUNTIME_FEATURE_COMPRESSION; /* * XXX: Run some benchmarks to see if there are better default values. */ config->compression_level = 1; #endif config->feature_flags &= ~RUNTIME_FEATURE_TOLERATE_PIPELINING; configfp = fopen(configfile, "r"); if (NULL == configfp) { log_error(LOG_LEVEL_FATAL, "can't open configuration file '%s': %E", configfile); /* Never get here - LOG_LEVEL_FATAL causes program exit */ } while (read_config_line(configfp, &linenum, &buf) != NULL) { char cmd[BUFFER_SIZE]; char arg[BUFFER_SIZE]; char tmp[BUFFER_SIZE]; #ifdef FEATURE_ACL struct access_control_list *cur_acl; #endif /* def FEATURE_ACL */ struct forward_spec *cur_fwd; int vec_count; char *vec[3]; unsigned int directive_hash; strlcpy(tmp, buf, sizeof(tmp)); /* Copy command (i.e. up to space or tab) into cmd */ p = buf; q = cmd; while (*p && (*p != ' ') && (*p != '\t')) { *q++ = *p++; } *q = '\0'; /* Skip over the whitespace in buf */ while (*p && ((*p == ' ') || (*p == '\t'))) { p++; } /* Copy the argument into arg */ if (strlcpy(arg, p, sizeof(arg)) >= sizeof(arg)) { log_error(LOG_LEVEL_FATAL, "Config line too long: %s", buf); } /* Should never happen, but check this anyway */ if (*cmd == '\0') { freez(buf); continue; } /* Make sure the command field is lower case */ for (p = cmd; *p; p++) { if (privoxy_isupper(*p)) { *p = (char)privoxy_tolower(*p); } } directive_hash = hash_string(cmd); switch (directive_hash) { /* ************************************************************************* * actionsfile actions-file-name * In confdir by default * *************************************************************************/ case hash_actions_file : i = 0; while ((i < MAX_AF_FILES) && (NULL != config->actions_file[i])) { i++; } if (i >= MAX_AF_FILES) { log_error(LOG_LEVEL_FATAL, "Too many 'actionsfile' directives in config file - limit is %d.\n" "(You can increase this limit by changing MAX_AF_FILES in project.h and recompiling).", MAX_AF_FILES); } config->actions_file_short[i] = strdup(arg); config->actions_file[i] = make_path(config->confdir, arg); break; /* ************************************************************************* * accept-intercepted-requests * *************************************************************************/ case hash_accept_intercepted_requests: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS; } else { config->feature_flags &= ~RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS; } break; /* ************************************************************************* * admin-address email-address * *************************************************************************/ case hash_admin_address : freez(config->admin_address); config->admin_address = strdup(arg); break; /* ************************************************************************* * allow-cgi-request-crunching * *************************************************************************/ case hash_allow_cgi_request_crunching: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_CGI_CRUNCHING; } else { config->feature_flags &= ~RUNTIME_FEATURE_CGI_CRUNCHING; } break; /* ************************************************************************* * buffer-limit n * *************************************************************************/ case hash_buffer_limit : config->buffer_limit = (size_t)(1024 * atoi(arg)); break; /* ************************************************************************* * client-header-order header-1 header-2 ... header-n * *************************************************************************/ case hash_client_header_order: list_remove_all(config->ordered_client_headers); parse_client_header_order(config->ordered_client_headers, arg); break; /* ************************************************************************* * confdir directory-name * *************************************************************************/ case hash_confdir : freez(config->confdir); config->confdir = make_path(NULL, arg); break; /* ************************************************************************* * compression-level 0-9 * *************************************************************************/ #ifdef FEATURE_COMPRESSION case hash_compression_level : if (*arg != '\0') { int compression_level = atoi(arg); if (-1 <= compression_level && compression_level <= 9) { config->compression_level = compression_level;; } else { log_error(LOG_LEVEL_FATAL, "Invalid compression-level value: %s", arg); } } else { log_error(LOG_LEVEL_FATAL, "Invalid compression-level directive. Compression value missing"); } break; #endif /* ************************************************************************* * connection-sharing (0|1) * *************************************************************************/ #ifdef FEATURE_CONNECTION_SHARING case hash_connection_sharing : if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_CONNECTION_SHARING; } else { config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_SHARING; } break; #endif /* ************************************************************************* * debug n * Specifies debug level, multiple values are ORed together. * *************************************************************************/ case hash_debug : config->debug |= atoi(arg); break; /* ************************************************************************* * default-server-timeout timeout * *************************************************************************/ #ifdef FEATURE_CONNECTION_KEEP_ALIVE case hash_default_server_timeout : if (*arg != '\0') { int timeout = atoi(arg); if (0 <= timeout) { config->default_server_timeout = (unsigned int)timeout; } else { log_error(LOG_LEVEL_FATAL, "Invalid default-server-timeout value: %s", arg); } } break; #endif /* ************************************************************************* * deny-access source-ip[/significant-bits] [dest-ip[/significant-bits]] * *************************************************************************/ #ifdef FEATURE_ACL case hash_deny_access: strlcpy(tmp, arg, sizeof(tmp)); vec_count = ssplit(tmp, " \t", vec, SZ(vec)); if ((vec_count != 1) && (vec_count != 2)) { log_error(LOG_LEVEL_ERROR, "Wrong number of parameters for " "deny-access directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Wrong number of parameters for " "deny-access directive in configuration file.

\n"); break; } /* allocate a new node */ cur_acl = (struct access_control_list *) zalloc(sizeof(*cur_acl)); if (cur_acl == NULL) { log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ break; } cur_acl->action = ACL_DENY; if (acl_addr(vec[0], cur_acl->src) < 0) { log_error(LOG_LEVEL_ERROR, "Invalid source address, port or netmask " "for deny-access directive in configuration file: \"%s\"", vec[0]); string_append(&config->proxy_args, "
\nWARNING: Invalid source address, port or netmask " "for deny-access directive in configuration file: \""); string_append(&config->proxy_args, vec[0]); string_append(&config->proxy_args, "\"

\n"); freez(cur_acl); break; } if (vec_count == 2) { if (acl_addr(vec[1], cur_acl->dst) < 0) { log_error(LOG_LEVEL_ERROR, "Invalid destination address, port or netmask " "for deny-access directive in configuration file: \"%s\"", vec[1]); string_append(&config->proxy_args, "
\nWARNING: Invalid destination address, port or netmask " "for deny-access directive in configuration file: \""); string_append(&config->proxy_args, vec[1]); string_append(&config->proxy_args, "\"

\n"); freez(cur_acl); break; } } #ifdef HAVE_RFC2553 else { cur_acl->wildcard_dst = 1; } #endif /* def HAVE_RFC2553 */ /* * Add it to the list. Note we reverse the list to get the * behaviour the user expects. With both the ACL and * actions file, the last match wins. However, the internal * implementations are different: The actions file is stored * in the same order as the file, and scanned completely. * With the ACL, we reverse the order as we load it, then * when we scan it we stop as soon as we get a match. */ cur_acl->next = config->acl; config->acl = cur_acl; break; #endif /* def FEATURE_ACL */ /* ************************************************************************* * enable-edit-actions 0|1 * *************************************************************************/ #ifdef FEATURE_CGI_EDIT_ACTIONS case hash_enable_edit_actions: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_CGI_EDIT_ACTIONS; } else { config->feature_flags &= ~RUNTIME_FEATURE_CGI_EDIT_ACTIONS; } break; #endif /* def FEATURE_CGI_EDIT_ACTIONS */ /* ************************************************************************* * enable-compression 0|1 * *************************************************************************/ #ifdef FEATURE_COMPRESSION case hash_enable_compression: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_COMPRESSION; } else { config->feature_flags &= ~RUNTIME_FEATURE_COMPRESSION; } break; #endif /* def FEATURE_COMPRESSION */ /* ************************************************************************* * enable-remote-toggle 0|1 * *************************************************************************/ #ifdef FEATURE_TOGGLE case hash_enable_remote_toggle: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_CGI_TOGGLE; } else { config->feature_flags &= ~RUNTIME_FEATURE_CGI_TOGGLE; } break; #endif /* def FEATURE_TOGGLE */ /* ************************************************************************* * enable-remote-http-toggle 0|1 * *************************************************************************/ case hash_enable_remote_http_toggle: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_HTTP_TOGGLE; } else { config->feature_flags &= ~RUNTIME_FEATURE_HTTP_TOGGLE; } break; /* ************************************************************************* * enforce-blocks 0|1 * *************************************************************************/ case hash_enforce_blocks: #ifdef FEATURE_FORCE_LOAD if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_ENFORCE_BLOCKS; } else { config->feature_flags &= ~RUNTIME_FEATURE_ENFORCE_BLOCKS; } #else log_error(LOG_LEVEL_ERROR, "Ignoring directive 'enforce-blocks'. " "FEATURE_FORCE_LOAD is disabled, blocks will always be enforced."); #endif /* def FEATURE_FORCE_LOAD */ break; /* ************************************************************************* * filterfile file-name * In confdir by default. * *************************************************************************/ case hash_filterfile : i = 0; while ((i < MAX_AF_FILES) && (NULL != config->re_filterfile[i])) { i++; } if (i >= MAX_AF_FILES) { log_error(LOG_LEVEL_FATAL, "Too many 'filterfile' directives in config file - limit is %d.\n" "(You can increase this limit by changing MAX_AF_FILES in project.h and recompiling).", MAX_AF_FILES); } config->re_filterfile_short[i] = strdup(arg); config->re_filterfile[i] = make_path(config->confdir, arg); break; /* ************************************************************************* * forward url-pattern (.|http-proxy-host[:port]) * *************************************************************************/ case hash_forward: strlcpy(tmp, arg, sizeof(tmp)); vec_count = ssplit(tmp, " \t", vec, SZ(vec)); if (vec_count != 2) { log_error(LOG_LEVEL_ERROR, "Wrong number of parameters for forward " "directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Wrong number of parameters for " "forward directive in configuration file."); break; } /* allocate a new node */ cur_fwd = zalloc(sizeof(*cur_fwd)); if (cur_fwd == NULL) { log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ break; } cur_fwd->type = SOCKS_NONE; /* Save the URL pattern */ if (create_url_spec(cur_fwd->url, vec[0])) { log_error(LOG_LEVEL_ERROR, "Bad URL specifier for forward " "directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Bad URL specifier for " "forward directive in configuration file."); break; } /* Parse the parent HTTP proxy host:port */ p = vec[1]; if (strcmp(p, ".") != 0) { cur_fwd->forward_port = 8000; parse_forwarder_address(p, &cur_fwd->forward_host, &cur_fwd->forward_port); } /* Add to list. */ cur_fwd->next = config->forward; config->forward = cur_fwd; break; /* ************************************************************************* * forward-socks4 url-pattern socks-proxy[:port] (.|http-proxy[:port]) * *************************************************************************/ case hash_forward_socks4: strlcpy(tmp, arg, sizeof(tmp)); vec_count = ssplit(tmp, " \t", vec, SZ(vec)); if (vec_count != 3) { log_error(LOG_LEVEL_ERROR, "Wrong number of parameters for " "forward-socks4 directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Wrong number of parameters for " "forward-socks4 directive in configuration file."); break; } /* allocate a new node */ cur_fwd = zalloc(sizeof(*cur_fwd)); if (cur_fwd == NULL) { log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ break; } cur_fwd->type = SOCKS_4; /* Save the URL pattern */ if (create_url_spec(cur_fwd->url, vec[0])) { log_error(LOG_LEVEL_ERROR, "Bad URL specifier for forward-socks4 " "directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Bad URL specifier for " "forward-socks4 directive in configuration file."); break; } /* Parse the SOCKS proxy host[:port] */ p = vec[1]; /* XXX: This check looks like a bug. */ if (strcmp(p, ".") != 0) { cur_fwd->gateway_port = 1080; parse_forwarder_address(p, &cur_fwd->gateway_host, &cur_fwd->gateway_port); } /* Parse the parent HTTP proxy host[:port] */ p = vec[2]; if (strcmp(p, ".") != 0) { cur_fwd->forward_port = 8000; parse_forwarder_address(p, &cur_fwd->forward_host, &cur_fwd->forward_port); } /* Add to list. */ cur_fwd->next = config->forward; config->forward = cur_fwd; break; /* ************************************************************************* * forward-socks4a url-pattern socks-proxy[:port] (.|http-proxy[:port]) * *************************************************************************/ case hash_forward_socks4a: case hash_forward_socks5: strlcpy(tmp, arg, sizeof(tmp)); vec_count = ssplit(tmp, " \t", vec, SZ(vec)); if (vec_count != 3) { log_error(LOG_LEVEL_ERROR, "Wrong number of parameters for " "forward-socks4a directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Wrong number of parameters for " "forward-socks4a directive in configuration file."); break; } /* allocate a new node */ cur_fwd = zalloc(sizeof(*cur_fwd)); if (cur_fwd == NULL) { log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ break; } if (directive_hash == hash_forward_socks4a) { cur_fwd->type = SOCKS_4A; } else { cur_fwd->type = SOCKS_5; } /* Save the URL pattern */ if (create_url_spec(cur_fwd->url, vec[0])) { log_error(LOG_LEVEL_ERROR, "Bad URL specifier for forward-socks4a " "directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Bad URL specifier for " "forward-socks4a directive in configuration file."); break; } /* Parse the SOCKS proxy host[:port] */ p = vec[1]; cur_fwd->gateway_port = 1080; parse_forwarder_address(p, &cur_fwd->gateway_host, &cur_fwd->gateway_port); /* Parse the parent HTTP proxy host[:port] */ p = vec[2]; if (strcmp(p, ".") != 0) { cur_fwd->forward_port = 8000; parse_forwarder_address(p, &cur_fwd->forward_host, &cur_fwd->forward_port); } /* Add to list. */ cur_fwd->next = config->forward; config->forward = cur_fwd; break; /* ************************************************************************* * forwarded-connect-retries n * *************************************************************************/ case hash_forwarded_connect_retries : config->forwarded_connect_retries = atoi(arg); break; /* ************************************************************************* * handle-as-empty-doc-returns-ok 0|1 * * Workaround for firefox hanging on blocked javascript pages. * Block with the "+handle-as-empty-document" flag and set the * "handle-as-empty-doc-returns-ok" run-time config flag so that * Privoxy returns a 200/OK status instead of a 403/Forbidden status * to the browser for blocked pages. ***************************************************************************/ case hash_handle_as_empty_returns_ok: if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK; } else { config->feature_flags &= ~RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK; } break; /* ************************************************************************* * hostname hostname-to-show-on-cgi-pages * *************************************************************************/ case hash_hostname : freez(config->hostname); config->hostname = strdup(arg); if (NULL == config->hostname) { log_error(LOG_LEVEL_FATAL, "Out of memory saving hostname."); } break; /* ************************************************************************* * keep-alive-timeout timeout * *************************************************************************/ #ifdef FEATURE_CONNECTION_KEEP_ALIVE case hash_keep_alive_timeout : if (*arg != '\0') { int timeout = atoi(arg); if (0 < timeout) { config->feature_flags |= RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE; config->keep_alive_timeout = (unsigned int)timeout; } else { config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE; } } break; #endif /* ************************************************************************* * listen-address [ip][:port] * *************************************************************************/ case hash_listen_address : i = 0; while ((i < MAX_LISTENING_SOCKETS) && (NULL != config->haddr[i])) { i++; } if (i >= MAX_LISTENING_SOCKETS) { log_error(LOG_LEVEL_FATAL, "Too many 'listen-address' directives in config file - limit is %d.\n" "(You can increase this limit by changing MAX_LISTENING_SOCKETS in project.h and recompiling).", MAX_LISTENING_SOCKETS); } config->haddr[i] = strdup(arg); if (NULL == config->haddr[i]) { log_error(LOG_LEVEL_FATAL, "Out of memory while copying listening address"); } break; /* ************************************************************************* * logdir directory-name * *************************************************************************/ case hash_logdir : freez(config->logdir); config->logdir = make_path(NULL, arg); break; /* ************************************************************************* * logfile log-file-name * In logdir by default * *************************************************************************/ case hash_logfile : if (daemon_mode) { logfile = make_path(config->logdir, arg); if (NULL == logfile) { log_error(LOG_LEVEL_FATAL, "Out of memory while creating logfile path"); } } break; /* ************************************************************************* * max-client-connections number * *************************************************************************/ case hash_max_client_connections : if (*arg != '\0') { int max_client_connections = atoi(arg); if (0 <= max_client_connections) { config->max_client_connections = max_client_connections; } } break; /* ************************************************************************* * permit-access source-ip[/significant-bits] [dest-ip[/significant-bits]] * *************************************************************************/ #ifdef FEATURE_ACL case hash_permit_access: strlcpy(tmp, arg, sizeof(tmp)); vec_count = ssplit(tmp, " \t", vec, SZ(vec)); if ((vec_count != 1) && (vec_count != 2)) { log_error(LOG_LEVEL_ERROR, "Wrong number of parameters for " "permit-access directive in configuration file."); string_append(&config->proxy_args, "
\nWARNING: Wrong number of parameters for " "permit-access directive in configuration file.

\n"); break; } /* allocate a new node */ cur_acl = (struct access_control_list *) zalloc(sizeof(*cur_acl)); if (cur_acl == NULL) { log_error(LOG_LEVEL_FATAL, "can't allocate memory for configuration"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ break; } cur_acl->action = ACL_PERMIT; if (acl_addr(vec[0], cur_acl->src) < 0) { log_error(LOG_LEVEL_ERROR, "Invalid source address, port or netmask " "for permit-access directive in configuration file: \"%s\"", vec[0]); string_append(&config->proxy_args, "
\nWARNING: Invalid source address, port or netmask for " "permit-access directive in configuration file: \""); string_append(&config->proxy_args, vec[0]); string_append(&config->proxy_args, "\"

\n"); freez(cur_acl); break; } if (vec_count == 2) { if (acl_addr(vec[1], cur_acl->dst) < 0) { log_error(LOG_LEVEL_ERROR, "Invalid destination address, port or netmask " "for permit-access directive in configuration file: \"%s\"", vec[1]); string_append(&config->proxy_args, "
\nWARNING: Invalid destination address, port or netmask for " "permit-access directive in configuration file: \""); string_append(&config->proxy_args, vec[1]); string_append(&config->proxy_args, "\"

\n"); freez(cur_acl); break; } } #ifdef HAVE_RFC2553 else { cur_acl->wildcard_dst = 1; } #endif /* def HAVE_RFC2553 */ /* * Add it to the list. Note we reverse the list to get the * behaviour the user expects. With both the ACL and * actions file, the last match wins. However, the internal * implementations are different: The actions file is stored * in the same order as the file, and scanned completely. * With the ACL, we reverse the order as we load it, then * when we scan it we stop as soon as we get a match. */ cur_acl->next = config->acl; config->acl = cur_acl; break; #endif /* def FEATURE_ACL */ /* ************************************************************************* * proxy-info-url url * *************************************************************************/ case hash_proxy_info_url : freez(config->proxy_info_url); config->proxy_info_url = strdup(arg); break; /* ************************************************************************* * single-threaded * *************************************************************************/ case hash_single_threaded : config->multi_threaded = 0; break; /* ************************************************************************* * socket-timeout numer_of_seconds * *************************************************************************/ case hash_socket_timeout : if (*arg != '\0') { int socket_timeout = atoi(arg); if (0 <= socket_timeout) { config->socket_timeout = socket_timeout; } else { log_error(LOG_LEVEL_FATAL, "Invalid socket-timeout: '%s'", arg); } } break; /* ************************************************************************* * split-large-cgi-forms * *************************************************************************/ case hash_split_large_cgi_forms : if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_SPLIT_LARGE_FORMS; } else { config->feature_flags &= ~RUNTIME_FEATURE_SPLIT_LARGE_FORMS; } break; /* ************************************************************************* * templdir directory-name * *************************************************************************/ case hash_templdir : freez(config->templdir); config->templdir = make_path(NULL, arg); break; /* ************************************************************************* * tolerate-pipelining (0|1) * *************************************************************************/ case hash_tolerate_pipelining : if (parse_toggle_state(cmd, arg) == 1) { config->feature_flags |= RUNTIME_FEATURE_TOLERATE_PIPELINING; } else { config->feature_flags &= ~RUNTIME_FEATURE_TOLERATE_PIPELINING; } break; /* ************************************************************************* * toggle (0|1) * *************************************************************************/ #ifdef FEATURE_TOGGLE case hash_toggle : global_toggle_state = parse_toggle_state(cmd, arg); break; #endif /* def FEATURE_TOGGLE */ /* ************************************************************************* * trust-info-url url * *************************************************************************/ #ifdef FEATURE_TRUST case hash_trust_info_url : enlist(config->trust_info, arg); break; #endif /* def FEATURE_TRUST */ /* ************************************************************************* * trustfile filename * (In confdir by default.) * *************************************************************************/ #ifdef FEATURE_TRUST case hash_trustfile : freez(config->trustfile); config->trustfile = make_path(config->confdir, arg); break; #endif /* def FEATURE_TRUST */ /* ************************************************************************* * usermanual url * *************************************************************************/ case hash_usermanual : /* * XXX: If this isn't the first config directive, the * show-status page links to the website documentation * for the directives that were already parsed. Lame. */ freez(config->usermanual); config->usermanual = strdup(arg); break; /* ************************************************************************* * Win32 Console options: * *************************************************************************/ /* ************************************************************************* * hide-console * *************************************************************************/ #ifdef _WIN_CONSOLE case hash_hide_console : hideConsole = 1; break; #endif /*def _WIN_CONSOLE*/ /* ************************************************************************* * Win32 GUI options: * *************************************************************************/ #if defined(_WIN32) && ! defined(_WIN_CONSOLE) /* ************************************************************************* * activity-animation (0|1) * *************************************************************************/ case hash_activity_animation : g_bShowActivityAnimation = parse_toggle_state(cmd, arg); break; /* ************************************************************************* * close-button-minimizes (0|1) * *************************************************************************/ case hash_close_button_minimizes : g_bCloseHidesWindow = parse_toggle_state(cmd, arg); break; /* ************************************************************************* * log-buffer-size (0|1) * *************************************************************************/ case hash_log_buffer_size : g_bLimitBufferSize = parse_toggle_state(cmd, arg); break; /* ************************************************************************* * log-font-name fontname * *************************************************************************/ case hash_log_font_name : if (strlcpy(g_szFontFaceName, arg, sizeof(g_szFontFaceName)) >= sizeof(g_szFontFaceName)) { log_error(LOG_LEVEL_FATAL, "log-font-name argument '%s' is longer than %u characters.", arg, sizeof(g_szFontFaceName)-1); } break; /* ************************************************************************* * log-font-size n * *************************************************************************/ case hash_log_font_size : g_nFontSize = atoi(arg); break; /* ************************************************************************* * log-highlight-messages (0|1) * *************************************************************************/ case hash_log_highlight_messages : g_bHighlightMessages = parse_toggle_state(cmd, arg); break; /* ************************************************************************* * log-max-lines n * *************************************************************************/ case hash_log_max_lines : g_nMaxBufferLines = atoi(arg); break; /* ************************************************************************* * log-messages (0|1) * *************************************************************************/ case hash_log_messages : g_bLogMessages = parse_toggle_state(cmd, arg); break; /* ************************************************************************* * show-on-task-bar (0|1) * *************************************************************************/ case hash_show_on_task_bar : g_bShowOnTaskBar = parse_toggle_state(cmd, arg); break; #endif /* defined(_WIN32) && ! defined(_WIN_CONSOLE) */ /* ************************************************************************* * Warnings about unsupported features * *************************************************************************/ #ifndef FEATURE_ACL case hash_deny_access: #endif /* ndef FEATURE_ACL */ #ifndef FEATURE_CGI_EDIT_ACTIONS case hash_enable_edit_actions: #endif /* ndef FEATURE_CGI_EDIT_ACTIONS */ #ifndef FEATURE_TOGGLE case hash_enable_remote_toggle: #endif /* ndef FEATURE_TOGGLE */ #ifndef FEATURE_ACL case hash_permit_access: #endif /* ndef FEATURE_ACL */ #ifndef FEATURE_TOGGLE case hash_toggle : #endif /* ndef FEATURE_TOGGLE */ #ifndef FEATURE_TRUST case hash_trustfile : case hash_trust_info_url : #endif /* ndef FEATURE_TRUST */ #ifndef _WIN_CONSOLE case hash_hide_console : #endif /* ndef _WIN_CONSOLE */ #if defined(_WIN_CONSOLE) || ! defined(_WIN32) case hash_activity_animation : case hash_close_button_minimizes : case hash_log_buffer_size : case hash_log_font_name : case hash_log_font_size : case hash_log_highlight_messages : case hash_log_max_lines : case hash_log_messages : case hash_show_on_task_bar : #endif /* defined(_WIN_CONSOLE) || ! defined(_WIN32) */ /* These warnings are annoying - so hide them. -- Jon */ /* log_error(LOG_LEVEL_INFO, "Unsupported directive \"%s\" ignored.", cmd); */ break; /* *************************************************************************/ default : /* *************************************************************************/ /* * I decided that I liked this better as a warning than an * error. To change back to an error, just change log level * to LOG_LEVEL_FATAL. */ log_error(LOG_LEVEL_ERROR, "Ignoring unrecognized directive " "'%s' (%uU) in line %lu in configuration file (%s).", buf, directive_hash, linenum, configfile); string_append(&config->proxy_args, " Warning: Ignoring unrecognized directive:"); break; /* *************************************************************************/ } /* end switch(hash_string(cmd)) */ /* Save the argument for the show-status page. */ savearg(cmd, arg, config); freez(buf); } /* end while (read_config_line(...)) */ fclose(configfp); set_debug_level(config->debug); freez(config->logfile); if (daemon_mode) { if (NULL != logfile) { config->logfile = logfile; init_error_log(Argv[0], config->logfile); } else { disable_logging(); } } #ifdef FEATURE_CONNECTION_KEEP_ALIVE if (config->default_server_timeout > config->keep_alive_timeout) { log_error(LOG_LEVEL_ERROR, "Reducing the default-server-timeout from %d to the keep-alive-timeout %d.", config->default_server_timeout, config->keep_alive_timeout); config->default_server_timeout = config->keep_alive_timeout; } #endif /* def FEATURE_CONNECTION_KEEP_ALIVE */ #ifdef FEATURE_CONNECTION_SHARING if (config->feature_flags & RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE) { if (config->multi_threaded) { set_keep_alive_timeout(config->keep_alive_timeout); } else { /* * While we could use keep-alive without multiple threads * if we didn't bother with enforcing the connection timeout, * that might make Tor users sad, even though they shouldn't * enable the single-threaded option anyway. * * XXX: We could still use Proxy-Connection: keep-alive. */ config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE; log_error(LOG_LEVEL_ERROR, "Config option single-threaded disables connection keep-alive."); } } else if ((config->feature_flags & RUNTIME_FEATURE_CONNECTION_SHARING)) { log_error(LOG_LEVEL_ERROR, "Config option connection-sharing " "has no effect if keep-alive-timeout isn't set."); config->feature_flags &= ~RUNTIME_FEATURE_CONNECTION_SHARING; } #endif /* def FEATURE_CONNECTION_SHARING */ if (NULL == config->proxy_args) { log_error(LOG_LEVEL_FATAL, "Out of memory loading config - insufficient memory for config->proxy_args"); } if (config->re_filterfile[0]) { add_loader(load_re_filterfiles, config); } if (config->actions_file[0]) { add_loader(load_action_files, config); } #ifdef FEATURE_TRUST if (config->trustfile) { add_loader(load_trustfile, config); } #endif /* def FEATURE_TRUST */ if (NULL == config->haddr[0]) { config->haddr[0] = strdup(HADDR_DEFAULT); if (NULL == config->haddr[0]) { log_error(LOG_LEVEL_FATAL, "Out of memory while copying default listening address"); } } for (i = 0; i < MAX_LISTENING_SOCKETS && NULL != config->haddr[i]; i++) { if ((*config->haddr[i] == '[') && (NULL != (p = strchr(config->haddr[i], ']'))) && (p[1] == ':') && (0 < (config->hport[i] = atoi(p + 2)))) { *p = '\0'; memmove((void *)config->haddr[i], config->haddr[i] + 1, (size_t)(p - config->haddr[i])); } else if (NULL != (p = strchr(config->haddr[i], ':')) && (0 < (config->hport[i] = atoi(p + 1)))) { *p = '\0'; } else { log_error(LOG_LEVEL_FATAL, "invalid bind port spec %s", config->haddr[i]); /* Never get here - LOG_LEVEL_FATAL causes program exit */ } if (*config->haddr[i] == '\0') { /* * Only the port specified. We stored it in config->hport[i] * and don't need its text representation anymore. * Use config->hport[i] == 0 to iterate listening addresses since * now. */ freez(config->haddr[i]); } } /* * Want to run all the loaders once now. * * Need to set up a fake csp, so they can get to the config. */ fake_csp = (struct client_state *) zalloc (sizeof(*fake_csp)); fake_csp->config = config; if (run_loader(fake_csp)) { freez(fake_csp); log_error(LOG_LEVEL_FATAL, "A loader failed while loading config file. Exiting."); /* Never get here - LOG_LEVEL_FATAL causes program exit */ } freez(fake_csp); /* FIXME: this is a kludge for win32 */ #if defined(_WIN32) && !defined (_WIN_CONSOLE) g_default_actions_file = config->actions_file[1]; /* FIXME Hope this is default.action */ g_user_actions_file = config->actions_file[2]; /* FIXME Hope this is user.action */ g_default_filterfile = config->re_filterfile[0]; /* FIXME Hope this is default.filter */ g_user_filterfile = config->re_filterfile[1]; /* FIXME Hope this is user.filter */ #ifdef FEATURE_TRUST g_trustfile = config->trustfile; #endif /* def FEATURE_TRUST */ #endif /* defined(_WIN32) && !defined (_WIN_CONSOLE) */ /* FIXME: end kludge */ config->need_bind = 1; if (current_configfile) { struct configuration_spec * oldcfg = (struct configuration_spec *) current_configfile->f; /* * Check if config->haddr[i],hport[i] == oldcfg->haddr[i],hport[i] * * The following could be written more compactly as a single, * (unreadably long) if statement. */ config->need_bind = 0; for (i = 0; i < MAX_LISTENING_SOCKETS; i++) { if (config->hport[i] != oldcfg->hport[i]) { config->need_bind = 1; } else if (config->haddr[i] == NULL) { if (oldcfg->haddr[i] != NULL) { config->need_bind = 1; } } else if (oldcfg->haddr[i] == NULL) { config->need_bind = 1; } else if (0 != strcmp(config->haddr[i], oldcfg->haddr[i])) { config->need_bind = 1; } } current_configfile->unloader = unload_configfile; } fs->next = files->next; files->next = fs; current_configfile = fs; return (config); } /********************************************************************* * * Function : savearg * * Description : Called from `load_config'. It saves each non-empty * and non-comment line from config into * config->proxy_args. This is used to create the * show-proxy-args page. On error, frees * config->proxy_args and sets it to NULL * * Parameters : * 1 : command = config setting that was found * 2 : argument = the setting's argument (if any) * 3 : config = Configuration to save into. * * Returns : N/A * *********************************************************************/ static void savearg(char *command, char *argument, struct configuration_spec * config) { char * buf; char * s; assert(command); assert(argument); /* * Add config option name embedded in * link to its section in the user-manual */ buf = strdup("\nusermanual, "file://", 7) || !strncmpic(config->usermanual, "http", 4)) { string_append(&buf, config->usermanual); } else { string_append(&buf, "http://" CGI_SITE_2_HOST "/user-manual/"); } string_append(&buf, CONFIG_HELP_PREFIX); string_join (&buf, string_toupper(command)); string_append(&buf, "\">"); string_append(&buf, command); string_append(&buf, " "); if (NULL == buf) { freez(config->proxy_args); return; } if ((NULL != argument) && ('\0' != *argument)) { s = html_encode(argument); if (NULL == s) { freez(buf); freez(config->proxy_args); return; } if (strncmpic(argument, "http://", 7) == 0) { string_append(&buf, ""); string_join (&buf, s); string_append(&buf, ""); } else { string_join (&buf, s); } } string_append(&buf, "
"); string_join(&config->proxy_args, buf); } /* Local Variables: tab-width: 3 end: */