relay: add support of multiple servers on same port for irc protocol (the client must send the server in the "PASS" command)

src/plugins/relay/irc/relay-irc.c

@@ -1149,6 +1149,10 @@ relay_irc_hook_signals (struct t_relay_client *client)
 {
     char str_signal_name[128];
 
+    /* do nothing if "protocol_args" (irc server name) is not yet initialized */
+    if (!client->protocol_args)
+        return;
+
     /*
      * hook signal "xxx,irc_in2_*" to catch IRC data received from
      * this server
@@ -1292,10 +1296,10 @@ void
 relay_irc_recv (struct t_relay_client *client, const char *data)
 {
     char str_time[128], str_signal[128], str_server_channel[256];
-    char str_command[128], *target, **irc_argv;
+    char str_command[128], *target, **irc_argv, *pos;
     const char *irc_command, *irc_channel, *irc_args, *irc_args2;
     int irc_argc, redirect_msg;
-    const char *nick, *irc_is_channel, *isupport, *info;
+    const char *nick, *irc_is_channel, *isupport, *info, *pos_password;
     struct t_hashtable *hash_parsed, *hash_redirect;
     struct t_infolist *infolist_server;
 
@@ -1348,11 +1352,23 @@ relay_irc_recv (struct t_relay_client *client, const char *data)
     {
         if (irc_command && (weechat_strcasecmp (irc_command, "pass") == 0))
         {
-            if (!RELAY_IRC_DATA(client, password_ok))
+            if (irc_args && irc_args[0])
             {
-                if (irc_args && irc_args[0]
+                pos_password = (irc_args[0] == ':') ? irc_args + 1 : irc_args;
+                if (!client->protocol_args)
+                {
+                    pos = strchr (pos_password, ':');
+                    if (pos)
+                    {
+                        client->protocol_args = weechat_strndup (pos_password,
+                                                                 pos - pos_password);
+                        relay_client_set_desc (client);
+                        pos_password = pos + 1;
+                    }
+                }
+                if (!RELAY_IRC_DATA(client, password_ok)
                     && (strcmp (weechat_config_string (relay_config_network_password),
-                                (irc_args[0] == ':') ? irc_args + 1 : irc_args) == 0))
+                                pos_password) == 0))
                 {
                     RELAY_IRC_DATA(client, password_ok) = 1;
                 }
@@ -1360,6 +1376,21 @@ relay_irc_recv (struct t_relay_client *client, const char *data)
         }
         if (irc_command && (weechat_strcasecmp (irc_command, "user") == 0))
         {
+            /* check if server is known */
+            if (!client->protocol_args)
+            {
+                relay_irc_sendf (client,
+                                 ":%s ERROR :WeeChat: server not specified, "
+                                 "command \"PASS server:password\" not received",
+                                 RELAY_IRC_DATA(client, address));
+                relay_irc_sendf (client,
+                                 ":%s ERROR :Closing Link",
+                                 RELAY_IRC_DATA(client, address));
+                relay_client_set_status (client,
+                                         RELAY_STATUS_DISCONNECTED);
+                goto end;
+            }
+
             /* check if connection to server is ok */
             infolist_server = weechat_infolist_get ("irc_server", NULL,
                                                     client->protocol_args);

src/plugins/relay/relay-client.h

@@ -113,6 +113,7 @@ extern int relay_client_count;
 extern int relay_client_valid (struct t_relay_client *client);
 extern struct t_relay_client *relay_client_search_by_number (int number);
 extern struct t_relay_client *relay_client_search_by_id (int id);
+extern void relay_client_set_desc (struct t_relay_client *client);
 extern int relay_client_recv_cb (void *arg_client, int fd);
 extern int relay_client_send (struct t_relay_client *client, const char *data,
                               int data_size, const char *message_raw_buffer);

src/plugins/relay/relay-command.c

@@ -326,7 +326,9 @@ relay_command_init ()
                              "          ssl: enable SSL\n"
                              "protocol.name: protocol and name to relay:\n"
                              "                 - protocol \"irc\": name is the "
-                             "server to share\n"
+                             "server to share (optional, if not given, the server "
+                             "name must be sent by client in command \"PASS\", "
+                             "with format: \"PASS server:password\")\n"
                              "                 - protocol \"weechat\" (name is "
                              "not used)\n"
                              "         port: port used for relay\n"
@@ -340,6 +342,9 @@ relay_command_init ()
                              "    /relay add irc.freenode 8000\n"
                              "  irc proxy, for server \"freenode\", with SSL:\n"
                              "    /relay add ssl.irc.freenode 8001\n"
+                             "  irc proxy, for all servers (client will choose), "
+                             "with SSL:\n"
+                             "    /relay add ssl.irc 8002\n"
                              "  weechat protocol:\n"
                              "    /relay add weechat 9000\n"
                              "  weechat protocol with SSL:\n"

src/plugins/relay/relay-config.c

@@ -397,14 +397,6 @@ relay_config_create_option_port (void *data,
                             RELAY_PLUGIN_NAME, protocol);
             rc = WEECHAT_CONFIG_OPTION_SET_ERROR;
         }
-        else if ((protocol_number == RELAY_PROTOCOL_IRC) && !protocol_args)
-        {
-            weechat_printf (NULL, _("%s%s: error: name is not required for "
-                                    "protocol \"%s\""),
-                            weechat_prefix ("error"),
-                            RELAY_PLUGIN_NAME, protocol);
-            rc = WEECHAT_CONFIG_OPTION_SET_ERROR;
-        }
     }
 
     if (rc != WEECHAT_CONFIG_OPTION_SET_ERROR)