From e0841d15a2958eb7f5df7ad52ff940f7435f0aa2 Mon Sep 17 00:00:00 2001
From: Timo Sirainen <cras@irssi.org>
Date: Tue, 20 Nov 2001 01:47:29 +0000
Subject: /UPGRADE now saves the session, disconnects the servers so that the
 socket isn't closed but irssi thinks its disconnected, then it quits irssi,
 and as the last command executes the new irssi. This way we get clean
 deinitialization so irssi can close log files, destroy scripts, etc.

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@2114 dbcabf3a-b0e7-0310-adc4-f8d773084564
---
 src/core/session.c | 59 +++++++++++++++++++++++++++---------------------------
 1 file changed, 30 insertions(+), 29 deletions(-)

(limited to 'src/core/session.c')

diff --git a/src/core/session.c b/src/core/session.c
index 217b44f8..9cc9a14c 100644
--- a/src/core/session.c
+++ b/src/core/session.c
@@ -33,6 +33,8 @@
 static char *session_file;
 static char *irssi_binary;
 
+static char **session_args;
+
 void session_set_binary(const char *path)
 {
 	char **paths, **tmp;
@@ -70,13 +72,21 @@ void session_set_binary(const char *path)
 	g_strfreev(paths);
 }
 
+void session_upgrade(void)
+{
+	if (session_args == NULL)
+                return;
+
+	execvp(session_args[0], session_args);
+	fprintf(stderr, "exec failed: %s: %s\n",
+		session_args[0], g_strerror(errno));
+}
+
 /* SYNTAX: UPGRADE [<irssi binary path>] */
 static void cmd_upgrade(const char *data)
 {
 	CONFIG_REC *session;
-        GSList *file_handles;
-	char *session_file, *str, **args;
-        int i;
+	char *session_file, *str;
 
 	if (*data == '\0')
 		data = irssi_binary;
@@ -88,32 +98,18 @@ static void cmd_upgrade(const char *data)
 	session = config_open(session_file, 0600);
         unlink(session_file);
 
-        file_handles = NULL;
-	signal_emit("session save", 2, session, &file_handles);
+	signal_emit("session save", 1, session);
         config_write(session, NULL, -1);
         config_close(session);
 
-        /* Cleanup the terminal etc. */
-	signal_emit("session clean", 0);
-
-        /* close the file handles we don't want to transfer to new client */
-	for (i = 3; i < 256; i++) {
-		if (g_slist_find(file_handles, GINT_TO_POINTER(i)) == NULL)
-			close(i);
-	}
-	g_slist_free(file_handles),
-
 	/* irssi -! --session ~/.irssi/session
 	   data may contain some other program as well, like
 	   /UPGRADE /usr/bin/screen irssi */
 	str = g_strdup_printf("%s -! --session %s", data, session_file);
-        args = g_strsplit(str, " ", -1);
+        session_args = g_strsplit(str, " ", -1);
         g_free(str);
 
-	execvp(args[0], (char **) args);
-
-	fprintf(stderr, "exec: %s: %s\n", args[0], g_strerror(errno));
-	_exit(-1);
+	signal_emit("gui exit", 0);
 }
 
 static void session_save_channel(CHANNEL_REC *channel, CONFIG_REC *config,
@@ -146,7 +142,7 @@ static void session_restore_channel(SERVER_REC *server, CONFIG_NODE *node)
 }
 
 static void session_save_server(SERVER_REC *server, CONFIG_REC *config,
-				CONFIG_NODE *node, GSList **file_handles)
+				CONFIG_NODE *node)
 {
         GSList *tmp;
 	int handle;
@@ -162,16 +158,22 @@ static void session_save_server(SERVER_REC *server, CONFIG_REC *config,
 	config_node_set_str(config, node, "nick", server->nick);
 
 	handle = g_io_channel_unix_get_fd(net_sendbuffer_handle(server->handle));
-	*file_handles = g_slist_append(*file_handles, GINT_TO_POINTER(handle));
 	config_node_set_int(config, node, "handle", handle);
 
-	signal_emit("session save server", 4,
-		    server, config, node, file_handles);
+	signal_emit("session save server", 3, server, config, node);
 
         /* save channels */
         node = config_node_section(node, "channels", NODE_TYPE_LIST);
 	for (tmp = server->channels; tmp != NULL; tmp = tmp->next)
-                session_save_channel(tmp->data, config, node);
+		session_save_channel(tmp->data, config, node);
+
+	/* fake the server disconnection */
+        g_io_channel_unref(net_sendbuffer_handle(server->handle));
+	net_sendbuffer_destroy(server->handle, FALSE);
+	server->handle = NULL;
+
+	server->connection_lost = TRUE;
+        server_disconnect(server);
 }
 
 static void session_restore_server(CONFIG_NODE *node)
@@ -218,14 +220,13 @@ static void session_restore_server(CONFIG_NODE *node)
 	}
 }
 
-static void sig_session_save(CONFIG_REC *config, GSList **file_handles)
+static void sig_session_save(CONFIG_REC *config)
 {
 	CONFIG_NODE *node;
-        GSList *tmp;
 
 	node = config_node_traverse(config, "(servers", TRUE);
-	for (tmp = servers; tmp != NULL; tmp = tmp->next)
-                session_save_server(tmp->data, config, node, file_handles);
+	while (servers != NULL)
+		session_save_server(servers->data, config, node);
 }
 
 static void sig_session_restore(CONFIG_REC *config)
-- 
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