Add "Cross-origin resource sharing" (CORS) support

[privoxy.git] / loadcfg.c

diff --git a/loadcfg.c b/loadcfg.c
index f2541e2..88379eb 100644 (file)
--- a/loadcfg.c
+++ b/loadcfg.c
@@ -1,4 +1,3 @@
-const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.162 2017/06/04 14:42:32 fabiankeil Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/loadcfg.c,v $
@@ -96,7 +95,10 @@ const char loadcfg_rcs[] = "$Id: loadcfg.c,v 1.162 2017/06/04 14:42:32 fabiankei
  */
 #define DEFAULT_KEEP_ALIVE_TIMEOUT 180
 
-const char loadcfg_h_rcs[] = LOADCFG_H_VERSION;
+/*
+ * Default backlog passed to listen().
+ */
+#define DEFAULT_LISTEN_BACKLOG 128
 
 #ifdef FEATURE_TOGGLE
 /* Privoxy is enabled by default. */
@@ -139,9 +141,11 @@ static struct file_list *current_configfile = NULL;
 #define hash_compression_level           2464423563U /* "compression-level" */
 #define hash_confdir                        1978389U /* "confdir" */
 #define hash_connection_sharing          1348841265U /* "connection-sharing" */
+#define hash_cors_allowed_origin         2769345637U /* "cors-allowed-origin" */
 #define hash_debug                            78263U /* "debug" */
 #define hash_default_server_timeout      2530089913U /* "default-server-timeout" */
 #define hash_deny_access                 1227333715U /* "deny-access" */
+#define hash_enable_accept_filter        2909040407U /* "enable-accept-filter" */
 #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 */
@@ -159,6 +163,7 @@ static struct file_list *current_configfile = NULL;
 #define hash_hostname                      10308071U /* "hostname" */
 #define hash_keep_alive_timeout          3878599515U /* "keep-alive-timeout" */
 #define hash_listen_address              1255650842U /* "listen-address" */
+#define hash_listen_backlog              1255655735U /* "listen-backlog" */
 #define hash_logdir                          422889U /* "logdir" */
 #define hash_logfile                        2114766U /* "logfile" */
 #define hash_max_client_connections      3595884446U /* "max-client-connections" */
@@ -612,6 +617,10 @@ struct configuration_spec * load_config(void)
    config->client_tag_lifetime       = 60;
 #endif
    config->trust_x_forwarded_for     = 0;
+#if defined(FEATURE_ACCEPT_FILTER) && defined(SO_ACCEPTFILTER)
+   config->enable_accept_filter      = 0;
+#endif
+   config->listen_backlog            = DEFAULT_LISTEN_BACKLOG;
    config->trusted_cgi_referrer      = NULL;
    /*
     * 128 client sockets ought to be enough for everybody who can't
@@ -639,6 +648,7 @@ struct configuration_spec * load_config(void)
    config->compression_level         = 1;
 #endif
    config->feature_flags            &= ~RUNTIME_FEATURE_TOLERATE_PIPELINING;
+   config->cors_allowed_origin       = NULL;
 
    configfp = fopen(configfile, "r");
    if (NULL == configfp)
@@ -873,6 +883,18 @@ struct configuration_spec * load_config(void)
             break;
 #endif
 
+/* *************************************************************************
+ * cors-allowed-origin http://www.example.org
+ * *************************************************************************/
+         case hash_cors_allowed_origin :
+            /*
+             * We don't validate the specified referrer as
+             * it's only used for string comparison.
+             */
+            freez(config->cors_allowed_origin);
+            config->cors_allowed_origin = strdup_or_die(arg);
+            break;
+
 /* *************************************************************************
  * debug n
  * Specifies debug level, multiple values are ORed together.
@@ -976,6 +998,15 @@ struct configuration_spec * load_config(void)
             break;
 #endif /* def FEATURE_ACL */
 
+#if defined(FEATURE_ACCEPT_FILTER) && defined(SO_ACCEPTFILTER)
+/* *************************************************************************
+ * enable-accept-filter 0|1
+ * *************************************************************************/
+         case hash_enable_accept_filter :
+            config->enable_accept_filter = parse_toggle_state(cmd, arg);
+            break;
+#endif /* defined(FEATURE_ACCEPT_FILTER) && defined(SO_ACCEPTFILTER) */
+
 /* *************************************************************************
  * enable-edit-actions 0|1
  * *************************************************************************/
@@ -1353,6 +1384,18 @@ struct configuration_spec * load_config(void)
             config->haddr[i] = strdup_or_die(arg);
             break;
 
+/* *************************************************************************
+ * listen-backlog n
+ * *************************************************************************/
+         case hash_listen_backlog :
+            /*
+             * We don't enfore an upper or lower limit because on
+             * many platforms all values are valid and negative
+             * number mean "use the highest value allowed".
+             */
+            config->listen_backlog = parse_numeric_value(cmd, arg);
+            break;
+
 /* *************************************************************************
  * logdir directory-name
  * *************************************************************************/
@@ -1411,7 +1454,7 @@ struct configuration_spec * load_config(void)
              * On platforms were we use poll() we don't have to enforce
              * an upper connection limit either.
              *
-             * XXX: Do OS/2, Amiga etc. belong here as well?
+             * XXX: Do OS/2 etc. belong here as well?
              */
             if (max_client_connections < 1)
             {
@@ -1958,9 +2001,11 @@ struct configuration_spec * load_config(void)
 /* FIXME: end kludge */
 
 
-   config->need_bind = 1;
-
-   if (current_configfile)
+   if (current_configfile == NULL)
+   {
+      config->need_bind = 1;
+   }
+   else
    {
       struct configuration_spec * oldcfg = (struct configuration_spec *)
                                            current_configfile->f;