# HG changeset patch
# User Paul Aurich <darkrain42@pidgin.im>
# Date 1247114406 0
# Node ID e19d3ab2ce67e4abfce8f868b44345deee8ef8cb
# Parent  c0136c5dee5c54f21e46d17de8143789b72b6439
Notice when the MUC item JID on unavailable presence references another resource. Refs #8319.

Openfire supports multiple resources of the same user in a room
under the same nick, but will route an unavailable presence from
one to the other. We need to pick up on that (via the MUC item
JID) and not treat it as our leaving the room. This won't always
fix server broken-ness (e.g. anonymous rooms or non-admins).

Also, Don't iterate over every <x/> child of the <presence/>.
Just grab the one we want. There should [can] be only one.

diff -r c0136c5dee5c -r e19d3ab2ce67 libpurple/protocols/jabber/presence.c
--- a/libpurple/protocols/jabber/presence.c	Thu Jul 09 02:27:38 2009 +0000
+++ b/libpurple/protocols/jabber/presence.c	Thu Jul 09 04:40:06 2009 +0000
@@ -762,6 +762,7 @@
 				purple_conv_chat_user_set_flags(PURPLE_CONV_CHAT(chat->conv), jid->resource,
 						flags);
 		} else if (g_str_equal(type, "unavailable")) {
+			xmlnode *x;
 			gboolean nick_change = FALSE;
 			gboolean kick = FALSE;
 			gboolean is_our_resource = FALSE; /* Is the presence about us? */
@@ -784,28 +785,31 @@
 			is_our_resource = (0 == g_utf8_collate(jid->resource, chat->handle));
 
 			jabber_buddy_remove_resource(jb, jid->resource);
-			if(chat->muc) {
-				xmlnode *x;
-				for(x = xmlnode_get_child(packet, "x"); x; x = xmlnode_get_next_twin(x)) {
-					const char *xmlns, *nick, *code;
-					xmlnode *stat, *item;
-					if(!(xmlns = xmlnode_get_namespace(x)) ||
-							strcmp(xmlns, "http://jabber.org/protocol/muc#user"))
-						continue;
-					if(!(stat = xmlnode_get_child(x, "status")))
-						continue;
-					if(!(code = xmlnode_get_attrib(stat, "code")))
-						continue;
+
+			x = xmlnode_get_child_with_namespace(packet, "x",
+					"http://jabber.org/protocol/muc#user");
+			if (chat->muc && x) {
+				const char *nick;
+				const char *code = NULL;
+				const char *item_jid = NULL;
+				xmlnode *stat;
+				xmlnode *item;
 
-					item = xmlnode_get_child(x, "item");
+				item = xmlnode_get_child(x, "item");
+				if (item)
+					item_jid = xmlnode_get_attrib(item, "jid");
+
 
+				stat = xmlnode_get_child(x, "status");
+
+				if (stat)
+					code = xmlnode_get_attrib(stat, "code");
+
+				if (code) {
 					if(!strcmp(code, "301")) {
 						/* XXX: we got banned */
-					} else if(!strcmp(code, "303")) {
-						if (!item)
-							continue;
-						if(!(nick = xmlnode_get_attrib(item, "nick")))
-							continue;
+					} else if(!strcmp(code, "303") && item &&
+							(nick = xmlnode_get_attrib(item, "nick"))) {
 						nick_change = TRUE;
 						if(!strcmp(jid->resource, chat->handle)) {
 							g_free(chat->handle);
@@ -813,7 +817,8 @@
 						}
 						purple_conv_chat_rename_user(PURPLE_CONV_CHAT(chat->conv), jid->resource, nick);
 						jabber_chat_remove_handle(chat, jid->resource);
-						break;
+						/* TODO: Enable this when this is in a for-loop...
+						break; */
 					} else if(!strcmp(code, "307")) {
 						/* Someone was kicked from the room */
 						xmlnode *reason = NULL, *actor = NULL;
@@ -863,6 +868,21 @@
 						/* XXX: removed due to system shutdown */
 					}
 				}
+
+				/*
+				 * Possibly another connected resource of our JID (see XEP-0045
+				 * v1.24 section 7.1.10) being disconnected. Should be
+				 * distinguished by the item_jid.
+				 * Also possibly works around bits of an Openfire bug. See
+				 * #8319.
+				 */
+				if (is_our_resource && !purple_strequal(from, item_jid)) {
+					/* TODO: When the above is a loop, this needs to still act
+					 * sanely for all cases (this code is a little fragile). */
+					if (!kick && !nick_change)
+						/* Presumably, kicks and nick changes also affect us. */
+						is_our_resource = FALSE;
+				}
 			}
 			if(!nick_change) {
 				if (is_our_resource) {