Fix compiler warnings
[privoxy.git] / loadcfg.c
index 899e430..e8cdffe 100644 (file)
--- a/loadcfg.c
+++ b/loadcfg.c
@@ -1,4 +1,4 @@
-const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.111 2010/08/14 23:28:52 ler762 Exp $";
+const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.144 2015/12/27 12:50:42 fabiankeil Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/loadcfg.c,v $
@@ -8,7 +8,7 @@ const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.111 2010/08/14 23:28:52 ler762 Ex
  *                routine to load the configuration and the global
  *                variables it writes to.
  *
- * Copyright   :  Written by and Copyright (C) 2001-2009 the
+ * Copyright   :  Written by and Copyright (C) 2001-2016 the
  *                Privoxy team. http://www.privoxy.org/
  *
  *                Based on the Internet Junkbuster originally written
@@ -72,6 +72,7 @@ const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.111 2010/08/14 23:28:52 ler762 Ex
 
 #endif
 
+#include "project.h"
 #include "loadcfg.h"
 #include "list.h"
 #include "jcc.h"
@@ -87,17 +88,6 @@ const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.111 2010/08/14 23:28:52 ler762 Ex
 
 const char loadcfg_h_rcs[] = LOADCFG_H_VERSION;
 
-/*
- * Fix a problem with Solaris.  There should be no effect on other
- * platforms.
- * Solaris's isspace() is a macro which uses it's argument directly
- * as an array index.  Therefore we need to make sure that high-bit
- * characters generate +ve values, and ideally we also want to make
- * the argument match the declared parameter type of "int".
- */
-#define ijb_isupper(__X) isupper((int)(unsigned char)(__X))
-#define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
-
 #ifdef FEATURE_TOGGLE
 /* Privoxy is enabled by default. */
 int global_toggle_state = 1;
@@ -128,54 +118,61 @@ static struct file_list *current_configfile = NULL;
  * console and GUI specific options last).
  */
 
-#define hash_actions_file                1196306641ul /* "actionsfile" */
-#define hash_accept_intercepted_requests 1513024973ul /* "accept-intercepted-requests" */
-#define hash_admin_address               4112573064ul /* "admin-address" */
-#define hash_allow_cgi_request_crunching  258915987ul /* "allow-cgi-request-crunching" */
-#define hash_buffer_limit                1881726070ul /* "buffer-limit */
-#define hash_confdir                        1978389ul /* "confdir" */
-#define hash_connection_sharing          1348841265ul /* "connection-sharing" */
-#define hash_debug                            78263ul /* "debug" */
-#define hash_default_server_timeout      2530089913ul /* "default-server-timeout" */
-#define hash_deny_access                 1227333715ul /* "deny-access" */
-#define hash_enable_edit_actions         2517097536ul /* "enable-edit-actions" */
-#define hash_enable_remote_toggle        2979744683ul /* "enable-remote-toggle" */
-#define hash_enable_remote_http_toggle    110543988ul /* "enable-remote-http-toggle" */
-#define hash_enforce_blocks              1862427469ul /* "enforce-blocks" */
-#define hash_filterfile                   250887266ul /* "filterfile" */
-#define hash_forward                        2029845ul /* "forward" */
-#define hash_forward_socks4              3963965521ul /* "forward-socks4" */
-#define hash_forward_socks4a             2639958518ul /* "forward-socks4a" */
-#define hash_forward_socks5              3963965522ul /* "forward-socks5" */
-#define hash_forwarded_connect_retries    101465292ul /* "forwarded-connect-retries" */
-#define hash_handle_as_empty_returns_ok  1444873247ul /* "handle-as-empty-doc-returns-ok" */
-#define hash_hostname                      10308071ul /* "hostname" */
-#define hash_keep_alive_timeout          3878599515ul /* "keep-alive-timeout" */
-#define hash_listen_address              1255650842ul /* "listen-address" */
-#define hash_logdir                          422889ul /* "logdir" */
-#define hash_logfile                        2114766ul /* "logfile" */
-#define hash_max_client_connections      3595884446ul /* "max-client-connections" */
-#define hash_permit_access               3587953268ul /* "permit-access" */
-#define hash_proxy_info_url              3903079059ul /* "proxy-info-url" */
-#define hash_single_threaded             4250084780ul /* "single-threaded" */
-#define hash_socket_timeout              1809001761ul /* "socket-timeout" */
-#define hash_split_large_cgi_forms        671658948ul /* "split-large-cgi-forms" */
-#define hash_suppress_blocklists         1948693308ul /* "suppress-blocklists" */
-#define hash_templdir                      11067889ul /* "templdir" */
-#define hash_toggle                          447966ul /* "toggle" */
-#define hash_trust_info_url               430331967ul /* "trust-info-url" */
-#define hash_trustfile                     56494766ul /* "trustfile" */
-#define hash_usermanual                  1416668518ul /* "user-manual" */
-#define hash_activity_animation          1817904738ul /* "activity-animation" */
-#define hash_close_button_minimizes      3651284693ul /* "close-button-minimizes" */
-#define hash_hide_console                2048809870ul /* "hide-console" */
-#define hash_log_buffer_size             2918070425ul /* "log-buffer-size" */
-#define hash_log_font_name               2866730124ul /* "log-font-name" */
-#define hash_log_font_size               2866731014ul /* "log-font-size" */
-#define hash_log_highlight_messages      4032101240ul /* "log-highlight-messages" */
-#define hash_log_max_lines               2868344173ul /* "log-max-lines" */
-#define hash_log_messages                2291744899ul /* "log-messages" */
-#define hash_show_on_task_bar             215410365ul /* "show-on-task-bar" */
+#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_proxy_authentication_forwarding 4040610791U /* enable-proxy-authentication-forwarding */
+#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_forward_socks5t             2639958542U /* "forward-socks5t" */
+#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_temporary_directory         1824125181U /* "temporary-directory" */
+#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);
@@ -213,7 +210,7 @@ static void unload_configfile (void * data)
    while (cur_fwd != NULL)
    {
       struct forward_spec * next_fwd = cur_fwd->next;
-      free_url_spec(cur_fwd->url);
+      free_pattern_spec(cur_fwd->url);
 
       freez(cur_fwd->gateway_host);
       freez(cur_fwd->forward_host);
@@ -226,8 +223,14 @@ static void unload_configfile (void * data)
    freez(config->logdir);
    freez(config->templdir);
    freez(config->hostname);
+#ifdef FEATURE_EXTERNAL_FILTERS
+   freez(config->temporary_directory);
+#endif
 
-   freez(config->haddr);
+   for (i = 0; i < MAX_LISTENING_SOCKETS; i++)
+   {
+      freez(config->haddr[i]);
+   }
    freez(config->logfile);
 
    for (i = 0; i < MAX_AF_FILES; i++)
@@ -238,6 +241,8 @@ static void unload_configfile (void * data)
       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);
@@ -276,6 +281,162 @@ void unload_current_config_file(void)
 #endif
 
 
+/*********************************************************************
+ *
+ * Function    :  parse_numeric_value
+ *
+ * Description :  Parse the value of a directive that can only have
+ *                a single numeric value. Terminates with a fatal error
+ *                if the value is NULL or not numeric.
+ *
+ * Parameters  :
+ *          1  :  name:  The name of the directive. Used for log messages.
+ *          2  :  value: The value to parse
+ *
+ *
+ * Returns     :  The numerical value as integer
+ *
+ *********************************************************************/
+static int parse_numeric_value(const char *name, const char *value)
+{
+   int number;
+   char *endptr;
+
+   assert(name != NULL);
+   assert(value != NULL);
+
+   if ((value == NULL) || (*value == '\0'))
+   {
+      log_error(LOG_LEVEL_FATAL, "Directive %s used without argument", name);
+   }
+
+   number = (int)strtol(value, &endptr, 0);
+   if (*endptr != '\0')
+   {
+      log_error(LOG_LEVEL_FATAL,
+         "Directive '%s' used with non-numerical value: '%s'", name, value);
+   }
+
+   return number;
+
+}
+
+
+/*********************************************************************
+ *
+ * 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
@@ -352,7 +513,12 @@ struct configuration_spec * load_config(void)
    config->usermanual                = strdup(USER_MANUAL_URL);
    config->proxy_args                = strdup("");
    config->forwarded_connect_retries = 0;
-   config->max_client_connections    = 0;
+   /*
+    * 128 client sockets ought to be enough for everybody who can't
+    * be bothered to read the documentation to figure out how to
+    * increase the limit.
+    */
+   config->max_client_connections    = 128;
    config->socket_timeout            = 300; /* XXX: Should be a macro. */
 #ifdef FEATURE_CONNECTION_KEEP_ALIVE
    config->default_server_timeout    = 0;
@@ -364,6 +530,15 @@ struct configuration_spec * load_config(void)
    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;
+   config->feature_flags            &= ~RUNTIME_FEATURE_FORWARD_PROXY_AUTHENTICATION_HEADERS;
+#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)
@@ -384,7 +559,7 @@ struct configuration_spec * load_config(void)
       struct forward_spec *cur_fwd;
       int vec_count;
       char *vec[3];
-      unsigned long directive_hash;
+      unsigned int directive_hash;
 
       strlcpy(tmp, buf, sizeof(tmp));
 
@@ -419,9 +594,9 @@ struct configuration_spec * load_config(void)
       /* Make sure the command field is lower case */
       for (p = cmd; *p; p++)
       {
-         if (ijb_isupper(*p))
+         if (privoxy_isupper(*p))
          {
-            *p = (char)ijb_tolower(*p);
+            *p = (char)privoxy_tolower(*p);
          }
       }
 
@@ -453,7 +628,7 @@ struct configuration_spec * load_config(void)
  * accept-intercepted-requests
  * *************************************************************************/
          case hash_accept_intercepted_requests:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS;
             }
@@ -475,7 +650,7 @@ struct configuration_spec * load_config(void)
  * allow-cgi-request-crunching
  * *************************************************************************/
          case hash_allow_cgi_request_crunching:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_CGI_CRUNCHING;
             }
@@ -489,7 +664,15 @@ struct configuration_spec * load_config(void)
  * buffer-limit n
  * *************************************************************************/
          case hash_buffer_limit :
-            config->buffer_limit = (size_t)(1024 * atoi(arg));
+            config->buffer_limit = (size_t)(1024 * parse_numeric_value(cmd, 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;
 
 /* *************************************************************************
@@ -497,15 +680,35 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
          case hash_confdir :
             freez(config->confdir);
-            config->confdir = make_path( NULL, arg);
+            config->confdir = make_path(NULL, arg);
             break;
 
+/* *************************************************************************
+ * compression-level 0-9
+ * *************************************************************************/
+#ifdef FEATURE_COMPRESSION
+         case hash_compression_level :
+         {
+            int compression_level = parse_numeric_value(cmd, 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);
+            }
+            break;
+         }
+#endif
+
 /* *************************************************************************
  * connection-sharing (0|1)
  * *************************************************************************/
 #ifdef FEATURE_CONNECTION_SHARING
          case hash_connection_sharing :
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_CONNECTION_SHARING;
             }
@@ -521,7 +724,7 @@ struct configuration_spec * load_config(void)
  * Specifies debug level, multiple values are ORed together.
  * *************************************************************************/
          case hash_debug :
-            config->debug |= atoi(arg);
+            config->debug |= parse_numeric_value(cmd, arg);
             break;
 
 /* *************************************************************************
@@ -529,20 +732,19 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
 #ifdef FEATURE_CONNECTION_KEEP_ALIVE
          case hash_default_server_timeout :
-            if (*arg != '\0')
+         {
+            int timeout = parse_numeric_value(cmd, arg);
+            if (0 <= timeout)
             {
-               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);
-               }
+               config->default_server_timeout = (unsigned int)timeout;
+            }
+            else
+            {
+               log_error(LOG_LEVEL_FATAL,
+                  "Invalid default-server-timeout value: %s", arg);
             }
             break;
+         }
 #endif
 
 /* *************************************************************************
@@ -551,7 +753,7 @@ struct configuration_spec * load_config(void)
 #ifdef FEATURE_ACL
          case hash_deny_access:
             strlcpy(tmp, arg, sizeof(tmp));
-            vec_count = ssplit(tmp, " \t", vec, SZ(vec), 1, 1);
+            vec_count = ssplit(tmp, " \t", vec, SZ(vec));
 
             if ((vec_count != 1) && (vec_count != 2))
             {
@@ -632,7 +834,7 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
 #ifdef FEATURE_CGI_EDIT_ACTIONS
          case hash_enable_edit_actions:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_CGI_EDIT_ACTIONS;
             }
@@ -643,12 +845,42 @@ struct configuration_spec * load_config(void)
             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-proxy-authentication-forwarding 0|1
+ * *************************************************************************/
+         case hash_enable_proxy_authentication_forwarding:
+            if (parse_toggle_state(cmd, arg) == 1)
+            {
+               config->feature_flags |= RUNTIME_FEATURE_FORWARD_PROXY_AUTHENTICATION_HEADERS;
+            }
+            else
+            {
+               config->feature_flags &= ~RUNTIME_FEATURE_FORWARD_PROXY_AUTHENTICATION_HEADERS;
+            }
+            break;
+
 /* *************************************************************************
  * enable-remote-toggle 0|1
  * *************************************************************************/
 #ifdef FEATURE_TOGGLE
          case hash_enable_remote_toggle:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_CGI_TOGGLE;
             }
@@ -663,7 +895,7 @@ struct configuration_spec * load_config(void)
  * enable-remote-http-toggle 0|1
  * *************************************************************************/
          case hash_enable_remote_http_toggle:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_HTTP_TOGGLE;
             }
@@ -678,7 +910,7 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
          case hash_enforce_blocks:
 #ifdef FEATURE_FORCE_LOAD
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_ENFORCE_BLOCKS;
             }
@@ -719,7 +951,7 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
          case hash_forward:
             strlcpy(tmp, arg, sizeof(tmp));
-            vec_count = ssplit(tmp, " \t", vec, SZ(vec), 1, 1);
+            vec_count = ssplit(tmp, " \t", vec, SZ(vec));
 
             if (vec_count != 2)
             {
@@ -743,13 +975,14 @@ struct configuration_spec * load_config(void)
             cur_fwd->type = SOCKS_NONE;
 
             /* Save the URL pattern */
-            if (create_url_spec(cur_fwd->url, vec[0]))
+            if (create_pattern_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,
                   "<br>\nWARNING: Bad URL specifier for "
                   "forward directive in configuration file.");
+               freez(cur_fwd);
                break;
             }
 
@@ -774,7 +1007,7 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
          case hash_forward_socks4:
             strlcpy(tmp, arg, sizeof(tmp));
-            vec_count = ssplit(tmp, " \t", vec, SZ(vec), 1, 1);
+            vec_count = ssplit(tmp, " \t", vec, SZ(vec));
 
             if (vec_count != 3)
             {
@@ -798,13 +1031,14 @@ struct configuration_spec * load_config(void)
             cur_fwd->type = SOCKS_4;
 
             /* Save the URL pattern */
-            if (create_url_spec(cur_fwd->url, vec[0]))
+            if (create_pattern_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,
                   "<br>\nWARNING: Bad URL specifier for "
                   "forward-socks4 directive in configuration file.");
+               freez(cur_fwd);
                break;
             }
 
@@ -840,16 +1074,20 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
          case hash_forward_socks4a:
          case hash_forward_socks5:
+         case hash_forward_socks5t:
             strlcpy(tmp, arg, sizeof(tmp));
-            vec_count = ssplit(tmp, " \t", vec, SZ(vec), 1, 1);
+            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.");
+               log_error(LOG_LEVEL_ERROR,
+                  "Wrong number of parameters for %s in configuration file.",
+                  cmd);
                string_append(&config->proxy_args,
-                  "<br>\nWARNING: Wrong number of parameters for "
-                  "forward-socks4a directive in configuration file.");
+                  "<br>\nWARNING: Wrong number of parameters for ");
+               string_append(&config->proxy_args, cmd);
+               string_append(&config->proxy_args,
+                  "directive in configuration file.");
                break;
             }
 
@@ -866,19 +1104,28 @@ struct configuration_spec * load_config(void)
             {
                cur_fwd->type = SOCKS_4A;
             }
-            else
+            else if (directive_hash == hash_forward_socks5)
             {
                cur_fwd->type = SOCKS_5;
             }
+            else
+            {
+               assert(directive_hash == hash_forward_socks5t);
+               cur_fwd->type = SOCKS_5T;
+            }
 
             /* Save the URL pattern */
-            if (create_url_spec(cur_fwd->url, vec[0]))
+            if (create_pattern_spec(cur_fwd->url, vec[0]))
             {
-               log_error(LOG_LEVEL_ERROR, "Bad URL specifier for forward-socks4a "
-                     "directive in configuration file.");
+               log_error(LOG_LEVEL_ERROR,
+                  "Bad URL specifier for %s in configuration file.",
+                  cmd);
                string_append(&config->proxy_args,
-                  "<br>\nWARNING: Bad URL specifier for "
-                  "forward-socks4a directive in configuration file.");
+                  "<br>\nWARNING: Bad URL specifier for ");
+               string_append(&config->proxy_args, cmd);
+               string_append(&config->proxy_args,
+                  "directive in configuration file.");
+               freez(cur_fwd);
                break;
             }
 
@@ -909,7 +1156,7 @@ struct configuration_spec * load_config(void)
  * forwarded-connect-retries n
  * *************************************************************************/
          case hash_forwarded_connect_retries :
-            config->forwarded_connect_retries = atoi(arg);
+            config->forwarded_connect_retries = parse_numeric_value(cmd, arg);
             break;
 
 /* *************************************************************************
@@ -922,7 +1169,7 @@ struct configuration_spec * load_config(void)
  *   to the browser for blocked pages.
  ***************************************************************************/
          case hash_handle_as_empty_returns_ok:
-            if ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK;
             }
@@ -949,28 +1196,42 @@ struct configuration_spec * load_config(void)
  * *************************************************************************/
 #ifdef FEATURE_CONNECTION_KEEP_ALIVE
          case hash_keep_alive_timeout :
-            if (*arg != '\0')
+         {
+            int timeout = parse_numeric_value(cmd, arg);
+            if (0 < timeout)
             {
-               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;
-               }
+               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 :
-            freez(config->haddr);
-            config->haddr = strdup(arg);
+            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;
 
 /* *************************************************************************
@@ -1000,15 +1261,15 @@ struct configuration_spec * load_config(void)
  * max-client-connections number
  * *************************************************************************/
          case hash_max_client_connections :
-            if (*arg != '\0')
+         {
+            int max_client_connections = parse_numeric_value(cmd, arg);
+            if (0 <= max_client_connections)
             {
-               int max_client_connections = atoi(arg);
-               if (0 <= max_client_connections)
-               {
-                  config->max_client_connections = max_client_connections;
-               }
+               /* XXX: log error */
+               config->max_client_connections = max_client_connections;
             }
             break;
+         }
 
 /* *************************************************************************
  * permit-access source-ip[/significant-bits] [dest-ip[/significant-bits]]
@@ -1016,7 +1277,7 @@ struct configuration_spec * load_config(void)
 #ifdef FEATURE_ACL
          case hash_permit_access:
             strlcpy(tmp, arg, sizeof(tmp));
-            vec_count = ssplit(tmp, " \t", vec, SZ(vec), 1, 1);
+            vec_count = ssplit(tmp, " \t", vec, SZ(vec));
 
             if ((vec_count != 1) && (vec_count != 2))
             {
@@ -1102,36 +1363,34 @@ struct configuration_spec * load_config(void)
             break;
 
 /* *************************************************************************
- * single-threaded
+ * single-threaded 0|1
  * *************************************************************************/
          case hash_single_threaded :
-            config->multi_threaded = 0;
+            config->multi_threaded =  0 == parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
  * socket-timeout numer_of_seconds
  * *************************************************************************/
          case hash_socket_timeout :
-            if (*arg != '\0')
+         {
+            int socket_timeout = parse_numeric_value(cmd, arg);
+            if (0 <= socket_timeout)
             {
-               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);
-               }
+               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 ((*arg != '\0') && (0 != atoi(arg)))
+            if (parse_toggle_state(cmd, arg) == 1)
             {
                config->feature_flags |= RUNTIME_FEATURE_SPLIT_LARGE_FORMS;
             }
@@ -1149,12 +1408,36 @@ struct configuration_spec * load_config(void)
             config->templdir = make_path(NULL, arg);
             break;
 
+#ifdef FEATURE_EXTERNAL_FILTERS
+/* *************************************************************************
+ * temporary-directory directory-name
+ * *************************************************************************/
+         case hash_temporary_directory :
+            freez(config->temporary_directory);
+            config->temporary_directory = make_path(NULL, arg);
+            break;
+#endif
+
+/* *************************************************************************
+ * 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 = atoi(arg);
+            global_toggle_state = parse_toggle_state(cmd, arg);
             break;
 #endif /* def FEATURE_TOGGLE */
 
@@ -1214,21 +1497,21 @@ struct configuration_spec * load_config(void)
  * activity-animation (0|1)
  * *************************************************************************/
          case hash_activity_animation :
-            g_bShowActivityAnimation = atoi(arg);
+            g_bShowActivityAnimation = parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
  *  close-button-minimizes (0|1)
  * *************************************************************************/
          case hash_close_button_minimizes :
-            g_bCloseHidesWindow = atoi(arg);
+            g_bCloseHidesWindow = parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
  * log-buffer-size (0|1)
  * *************************************************************************/
          case hash_log_buffer_size :
-            g_bLimitBufferSize = atoi(arg);
+            g_bLimitBufferSize = parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
@@ -1248,35 +1531,35 @@ struct configuration_spec * load_config(void)
  * log-font-size n
  * *************************************************************************/
          case hash_log_font_size :
-            g_nFontSize = atoi(arg);
+            g_nFontSize = parse_numeric_value(cmd, arg);
             break;
 
 /* *************************************************************************
  * log-highlight-messages (0|1)
  * *************************************************************************/
          case hash_log_highlight_messages :
-            g_bHighlightMessages = atoi(arg);
+            g_bHighlightMessages = parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
  * log-max-lines n
  * *************************************************************************/
          case hash_log_max_lines :
-            g_nMaxBufferLines = atoi(arg);
+            g_nMaxBufferLines = parse_numeric_value(cmd, arg);
             break;
 
 /* *************************************************************************
  * log-messages (0|1)
  * *************************************************************************/
          case hash_log_messages :
-            g_bLogMessages = atoi(arg);
+            g_bLogMessages = parse_toggle_state(cmd, arg);
             break;
 
 /* *************************************************************************
  * show-on-task-bar (0|1)
  * *************************************************************************/
          case hash_show_on_task_bar :
-            g_bShowOnTaskBar = atoi(arg);
+            g_bShowOnTaskBar = parse_toggle_state(cmd, arg);
             break;
 
 #endif /* defined(_WIN32) && ! defined(_WIN_CONSOLE) */
@@ -1332,19 +1615,20 @@ struct configuration_spec * load_config(void)
              * error.  To change back to an error, just change log level
              * to LOG_LEVEL_FATAL.
              */
-            log_error(LOG_LEVEL_ERROR, "Ignoring unrecognized directive '%s' (%luul) in line %lu "
-                  "in configuration file (%s).",  buf, directive_hash, linenum, configfile);
+            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,
                " <strong class='warning'>Warning: Ignoring unrecognized directive:</strong>");
             break;
 
 /* *************************************************************************/
-      } /* end switch( hash_string(cmd) ) */
+      } /* end switch(hash_string(cmd)) */
 
       /* Save the argument for the show-status page. */
       savearg(cmd, arg, config);
       freez(buf);
-   } /* end while ( read_config_line(...) ) */
+   } /* end while (read_config_line(...)) */
 
    fclose(configfp);
 
@@ -1410,14 +1694,14 @@ struct configuration_spec * load_config(void)
       log_error(LOG_LEVEL_FATAL, "Out of memory loading config - insufficient memory for config->proxy_args");
    }
 
-   if (config->actions_file[0])
+   if (config->re_filterfile[0])
    {
-      add_loader(load_action_files, config);
+      add_loader(load_re_filterfiles, config);
    }
 
-   if (config->re_filterfile[0])
+   if (config->actions_file[0])
    {
-      add_loader(load_re_filterfiles, config);
+      add_loader(load_action_files, config);
    }
 
 #ifdef FEATURE_TRUST
@@ -1427,39 +1711,45 @@ struct configuration_spec * load_config(void)
    }
 #endif /* def FEATURE_TRUST */
 
-   if ( NULL == config->haddr )
+   if (NULL == config->haddr[0])
    {
-      config->haddr = strdup( HADDR_DEFAULT );
+      config->haddr[0] = strdup(HADDR_DEFAULT);
+      if (NULL == config->haddr[0])
+      {
+         log_error(LOG_LEVEL_FATAL, "Out of memory while copying default listening address");
+      }
    }
 
-   if ( NULL != config->haddr )
+   for (i = 0; i < MAX_LISTENING_SOCKETS && NULL != config->haddr[i]; i++)
    {
-      if ((*config->haddr == '[')
-         && (NULL != (p = strchr(config->haddr, ']')))
+      if ((*config->haddr[i] == '[')
+         && (NULL != (p = strchr(config->haddr[i], ']')))
          && (p[1] == ':')
-         && (0 < (config->hport = atoi(p + 2))))
+         && (0 < (config->hport[i] = atoi(p + 2))))
       {
          *p = '\0';
-         memmove((void *)config->haddr, config->haddr + 1,
-            (size_t)(p - config->haddr));
+         memmove((void *)config->haddr[i], config->haddr[i] + 1,
+            (size_t)(p - config->haddr[i]));
       }
-      else if (NULL != (p = strchr(config->haddr, ':'))
-         && (0 < (config->hport = atoi(p + 1))))
+      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);
+         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 == '\0')
+      if (*config->haddr[i] == '\0')
       {
          /*
-          * Only the port specified. We stored it in config->hport
+          * 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);
+         freez(config->haddr[i]);
       }
    }
 
@@ -1503,30 +1793,34 @@ struct configuration_spec * load_config(void)
       struct configuration_spec * oldcfg = (struct configuration_spec *)
                                            current_configfile->f;
       /*
-       * Check if config->haddr,hport == oldcfg->haddr,hport
+       * 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;
-      if (config->hport != oldcfg->hport)
-      {
-         config->need_bind = 1;
-      }
-      else if (config->haddr == NULL)
+
+      for (i = 0; i < MAX_LISTENING_SOCKETS; i++)
       {
-         if (oldcfg->haddr != NULL)
+         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;
          }
-      }
-      else if (oldcfg->haddr == NULL)
-      {
-         config->need_bind = 1;
-      }
-      else if (0 != strcmp(config->haddr, oldcfg->haddr))
-      {
-         config->need_bind = 1;
       }
 
       current_configfile->unloader = unload_configfile;
@@ -1593,7 +1887,7 @@ static void savearg(char *command, char *argument, struct configuration_spec * c
       return;
    }
 
-   if ( (NULL != argument) && ('\0' != *argument) )
+   if ((NULL != argument) && ('\0' != *argument))
    {
       s = html_encode(argument);
       if (NULL == s)