/SET resolve_prefer_ipv6 - should we prefer IPv6 or IPv4 addresses in

host name resolving. /SERVER ADD: added options -4 and -6. Fixed crash
at startup if server didn't have chat network set. "Connecting to xxx
[ip]" is now displayed before calling connect(), so if it fails we'll
still get the IP it's trying to connect to.


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@1268 dbcabf3a-b0e7-0310-adc4-f8d773084564

src/core/network.c

@@ -47,6 +47,8 @@ union sockaddr_union {
 #  define g_io_channel_new(handle) g_io_channel_unix_new(handle)
 #endif
 
+static unsigned short default_family = 0;
+
 /* Cygwin need this, don't know others.. */
 /*#define BLOCKING_SOCKETS 1*/
 
@@ -332,8 +334,9 @@ int net_getsockname(GIOChannel *handle, IPADDR *addr, int *port)
 	return 0;
 }
 
-/* Get IP address for host, returns 0 = ok,
+/* Get IP address for host. family specifies if we should prefer to
-   others = error code for net_gethosterror() */
+   IPv4 or IPv6 address (0 = default, AF_INET or AF_INET6).
+   returns 0 = ok, others = error code for net_gethosterror() */
 int net_gethostbyname(const char *addr, IPADDR *ip, int family)
 {
 #ifdef HAVE_IPV6
@@ -352,7 +355,7 @@ int net_gethostbyname(const char *addr, IPADDR *ip, int family)
 
 	memset(&hints, 0, sizeof(struct addrinfo));
 	hints.ai_socktype = SOCK_STREAM;
-        hints.ai_family = family;
+	hints.ai_family = family != 0 ? family : default_family;
 
 	/* save error to host_error for later use */
 	host_error = getaddrinfo(addr, NULL, &hints, &ai);
@@ -377,6 +380,13 @@ int net_gethostbyname(const char *addr, IPADDR *ip, int family)
 	return 0;
 }
 
+/* Set the default address family to use with host resolving
+   (AF_INET or AF_INET6) */
+void net_host_resolver_set_default_family(unsigned short family)
+{
+	default_family = family;
+}
+
 /* Get name for host, *name should be g_free()'d unless it's NULL.
    Return values are the same as with net_gethostbyname() */
 int net_gethostbyaddr(IPADDR *ip, char **name)

src/core/network.h

@@ -51,9 +51,12 @@ int net_receive(GIOChannel *handle, char *buf, int len);
 int net_transmit(GIOChannel *handle, const char *data, int len);
 
 /* Get IP address for host. family specifies if we should prefer to
-   IPv4 or IPv6 address (0 = don't care, AF_INET or AF_INET6).
+   IPv4 or IPv6 address (0 = default, AF_INET or AF_INET6).
    returns 0 = ok, others = error code for net_gethosterror() */
 int net_gethostbyname(const char *addr, IPADDR *ip, int family);
+/* Set the default address family to use with host resolving
+   (AF_INET or AF_INET6) */
+void net_host_resolver_set_default_family(unsigned short family);
 /* Get name for host, *name should be g_free()'d unless it's NULL.
    Return values are the same as with net_gethostbyname() */
 int net_gethostbyaddr(IPADDR *ip, char **name);

src/core/server-setup-rec.h

@@ -3,6 +3,7 @@ int chat_type; /* chat_protocol_lookup(xx) */
 
 char *chatnet;
 
+unsigned short family; /* 0 = default, AF_INET or AF_INET6 */
 char *address;
 int port;
 char *password;

src/core/servers-setup.c

@@ -1,7 +1,7 @@
 /*
  servers-setup.c : irssi
 
-    Copyright (C) 1999-2000 Timo Sirainen
+    Copyright (C) 1999-2001 Timo Sirainen
 
     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
@@ -31,6 +31,7 @@
 
 GSList *setupservers;
 
+char *old_source_host;
 int source_host_ok; /* Use source_host_ip .. */
 IPADDR *source_host_ip; /* Resolved address */
 
@@ -133,6 +134,8 @@ static void server_setup_fill_server(SERVER_CONNECT_REC *conn,
 
 	sserver->last_connect = time(NULL);
 
+	if (sserver->family != 0 && conn->family == 0)
+                conn->family = sserver->family;
 	if (sserver->port > 0 && conn->port <= 0)
 		conn->port = sserver->port;
 	server_setup_fill_reconn(conn, sserver);
@@ -307,7 +310,7 @@ static SERVER_SETUP_REC *server_setup_read(CONFIG_NODE *node)
 {
 	SERVER_SETUP_REC *rec;
         CHATNET_REC *chatnetrec;
-	char *server, *chatnet;
+	char *server, *chatnet, *family;
 	int port;
 
 	g_return_val_if_fail(node != NULL, NULL);
@@ -343,10 +346,14 @@ static SERVER_SETUP_REC *server_setup_read(CONFIG_NODE *node)
 		chatnet_create(chatnetrec);
 	}
 
+        family = config_node_get_str(node, "family", "");
+
 	rec = CHAT_PROTOCOL(chatnetrec)->create_server_setup();
 	rec->type = module_get_uniq_id("SERVER SETUP", 0);
-        rec->chat_type = chatnetrec->chat_type;
+        rec->chat_type = CHAT_PROTOCOL(chatnetrec)->id;
-	rec->chatnet = g_strdup(chatnetrec->name);
+	rec->chatnet = chatnetrec == NULL ? NULL : g_strdup(chatnetrec->name);
+	rec->family = g_strcasecmp(family, "inet6") == 0 ? AF_INET6 :
+		(g_strcasecmp(family, "inet") == 0 ? AF_INET : 0);
 	rec->address = g_strdup(server);
 	rec->password = g_strdup(config_node_get_str(node, "password", NULL));
 	rec->port = port;
@@ -379,6 +386,10 @@ static void server_setup_save(SERVER_SETUP_REC *rec)
 	iconfig_node_set_str(node, "password", rec->password);
 	iconfig_node_set_str(node, "own_host", rec->own_host);
 
+	iconfig_node_set_str(node, "family",
+			     rec->family == AF_INET6 ? "inet6" :
+			     rec->family == AF_INET ? "inet" : NULL);
+
 	if (rec->autoconnect)
 		iconfig_node_set_bool(node, "autoconnect", TRUE);
 
@@ -442,15 +453,26 @@ static void read_servers(void)
 
 static void read_settings(void)
 {
-	g_free_and_null(source_host_ip);
+	unsigned short family;
 
-	source_host_ok = FALSE;
+	family = settings_get_bool("resolve_prefer_ipv6") ? AF_INET6 : AF_INET;
-        get_source_host_ip();
+	net_host_resolver_set_default_family(family);
+
+	if (old_source_host == NULL ||
+	    strcmp(old_source_host, settings_get_str("hostname")) != 0) {
+                g_free_not_null(old_source_host);
+		old_source_host = g_strdup(settings_get_str("hostname"));
+
+		g_free_and_null(source_host_ip);
+		source_host_ok = FALSE;
+		get_source_host_ip();
+	}
 }
 
 void servers_setup_init(void)
 {
 	settings_add_str("server", "hostname", "");
+	settings_add_bool("server", "resolve_prefer_ipv6", FALSE);
 
 	settings_add_str("server", "nick", NULL);
 	settings_add_str("server", "user_name", NULL);
@@ -463,6 +485,7 @@ void servers_setup_init(void)
 
         setupservers = NULL;
 	source_host_ip = NULL;
+        old_source_host = NULL;
 	read_settings();
 
 	signal_add("setup changed", (SIGNAL_FUNC) read_settings);
@@ -473,6 +496,7 @@ void servers_setup_init(void)
 void servers_setup_deinit(void)
 {
 	g_free_not_null(source_host_ip);
+	g_free_not_null(old_source_host);
 
 	while (setupservers != NULL)
 		server_setup_destroy(setupservers->data);

src/core/servers.c

@@ -171,6 +171,9 @@ static void server_connect_callback_readpipe(SERVER_REC *server)
 	server->connect_pipe[0] = NULL;
 	server->connect_pipe[1] = NULL;
 
+        if (iprec.error == 0)
+		signal_emit("server connecting", 2, server, &iprec.ip);
+
 	conn = server->connrec;
 	handle = iprec.error != 0 ? NULL :
 		net_connect_ip(&iprec.ip, conn->proxy != NULL ?
@@ -205,7 +208,6 @@ static void server_connect_callback_readpipe(SERVER_REC *server)
 		g_input_add(handle, G_INPUT_WRITE | G_INPUT_READ,
 			    (GInputFunction) server_connect_callback_init,
 			    server);
-	signal_emit("server connecting", 2, server, &iprec.ip);
 }
 
 /* initializes server record but doesn't start connecting */

src/fe-common/core/fe-server.c

@@ -139,6 +139,11 @@ static void cmd_server_add(const char *data)
 		}
 	}
 
+	if (g_hash_table_lookup(optlist, "6"))
+		rec->family = AF_INET6;
+        else if (g_hash_table_lookup(optlist, "4"))
+		rec->family = AF_INET;
+
 	if (g_hash_table_lookup(optlist, "auto")) rec->autoconnect = TRUE;
 	if (g_hash_table_lookup(optlist, "noauto")) rec->autoconnect = FALSE;
 
@@ -321,7 +326,7 @@ void fe_server_init(void)
 	command_bind("server", NULL, (SIGNAL_FUNC) cmd_server);
 	command_bind("server add", NULL, (SIGNAL_FUNC) cmd_server_add);
 	command_bind("server remove", NULL, (SIGNAL_FUNC) cmd_server_remove);
-	command_set_options("server add", "auto noauto -host -port");
+	command_set_options("server add", "4 6 auto noauto -host -port");
 
 	signal_add("server looking", (SIGNAL_FUNC) sig_server_looking);
 	signal_add("server connecting", (SIGNAL_FUNC) sig_server_connecting);