presence.c

Linux下的多协议即时通讯程序源代码

		/* they are unsubscribing from our presence, we don't care */
		/* Well, maybe just a little, we might want/need to start
		 * acknowledging this (and the others) at some point. */
		jabber_id_free(jid);
		return;
	} else {
		if((y = xmlnode_get_child(packet, "show"))) {
			char *show = xmlnode_get_data(y);
			state = jabber_buddy_show_get_state(show);
			g_free(show);
		} else {
			state = JABBER_BUDDY_STATE_ONLINE;
		}
	}


	for(y = packet->child; y; y = y->next) {
		if(y->type != XMLNODE_TYPE_TAG)
			continue;

		if(!strcmp(y->name, "status")) {
			g_free(status);
			status = xmlnode_get_data(y);
		} else if(!strcmp(y->name, "priority")) {
			char *p = xmlnode_get_data(y);
			if(p) {
				priority = atoi(p);
				g_free(p);
			}
		} else if(!strcmp(y->name, "x")) {
			const char *xmlns = xmlnode_get_namespace(y);
			if(xmlns && !strcmp(xmlns, "jabber:x:delay")) {
				/* XXX: compare the time.  jabber:x:delay can happen on presence packets that aren't really and truly delayed */
				delayed = TRUE;
			} else if(xmlns && !strcmp(xmlns, "http://jabber.org/protocol/muc#user")) {
				xmlnode *z;

				muc = TRUE;
				if((z = xmlnode_get_child(y, "status"))) {
					const char *code = xmlnode_get_attrib(z, "code");
					if(code && !strcmp(code, "201")) {
						if((chat = jabber_chat_find(js, jid->node, jid->domain))) {
							chat->config_dialog_type = PURPLE_REQUEST_ACTION;
							chat->config_dialog_handle =
								purple_request_action(js->gc,
										_("Create New Room"),
										_("Create New Room"),
										_("You are creating a new room.  Would"
											" you like to configure it, or"
											" accept the default settings?"),
										/* Default Action */ 1,
										purple_connection_get_account(js->gc), NULL, chat->conv,
										chat, 2,
										_("_Configure Room"), G_CALLBACK(jabber_chat_request_room_configure),
										_("_Accept Defaults"), G_CALLBACK(jabber_chat_create_instant_room));
						}
					}
				}
				if((z = xmlnode_get_child(y, "item"))) {
					real_jid = xmlnode_get_attrib(z, "jid");
					affiliation = xmlnode_get_attrib(z, "affiliation");
					role = xmlnode_get_attrib(z, "role");
					if(affiliation != NULL && !strcmp(affiliation, "owner"))
						flags |= PURPLE_CBFLAGS_FOUNDER;
					if (role != NULL) {
						if (!strcmp(role, "moderator"))
							flags |= PURPLE_CBFLAGS_OP;
						else if (!strcmp(role, "participant"))
							flags |= PURPLE_CBFLAGS_VOICE;
					}
				}
			} else if(xmlns && !strcmp(xmlns, "vcard-temp:x:update")) {
				xmlnode *photo = xmlnode_get_child(y, "photo");
				if(photo) {
					g_free(avatar_hash);
					avatar_hash = xmlnode_get_data(photo);
				}
			}
		}
	}


	if(jid->node && (chat = jabber_chat_find(js, jid->node, jid->domain))) {
		static int i = 1;
		char *room_jid = g_strdup_printf("%s@%s", jid->node, jid->domain);

		if(state == JABBER_BUDDY_STATE_ERROR) {
			char *title, *msg = jabber_parse_error(js, packet);

			if(chat->conv) {
				title = g_strdup_printf(_("Error in chat %s"), from);
				serv_got_chat_left(js->gc, chat->id);
			} else {
				title = g_strdup_printf(_("Error joining chat %s"), from);
			}
			purple_notify_error(js->gc, title, title, msg);
			g_free(title);
			g_free(msg);

			jabber_chat_destroy(chat);
			jabber_id_free(jid);
			g_free(status);
			g_free(room_jid);
			g_free(avatar_hash);
			return;
		}


		if(type && !strcmp(type, "unavailable")) {
			gboolean nick_change = FALSE;

			/* If we haven't joined the chat yet, we don't care that someone
			 * left, or it was us leaving after we closed the chat */
			if(!chat->conv) {
				if(jid->resource && chat->handle && !strcmp(jid->resource, chat->handle))
					jabber_chat_destroy(chat);
				jabber_id_free(jid);
				g_free(status);
				g_free(room_jid);
				g_free(avatar_hash);
				return;
			}

			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;
					if(!strcmp(code, "301")) {
						/* XXX: we got banned */
					} else if(!strcmp(code, "303")) {
						if(!(item = xmlnode_get_child(x, "item")))
							continue;
						if(!(nick = xmlnode_get_attrib(item, "nick")))
							continue;
						nick_change = TRUE;
						if(!strcmp(jid->resource, chat->handle)) {
							g_free(chat->handle);
							chat->handle = g_strdup(nick);
						}
						purple_conv_chat_rename_user(PURPLE_CONV_CHAT(chat->conv), jid->resource, nick);
						jabber_chat_remove_handle(chat, jid->resource);
						break;
					} else if(!strcmp(code, "307")) {
						/* XXX: we got kicked */
					} else if(!strcmp(code, "321")) {
						/* XXX: removed due to an affiliation change */
					} else if(!strcmp(code, "322")) {
						/* XXX: removed because room is now members-only */
					} else if(!strcmp(code, "332")) {
						/* XXX: removed due to system shutdown */
					}
				}
			}
			if(!nick_change) {
				if(!g_utf8_collate(jid->resource, chat->handle)) {
					serv_got_chat_left(js->gc, chat->id);
					jabber_chat_destroy(chat);
				} else {
					purple_conv_chat_remove_user(PURPLE_CONV_CHAT(chat->conv), jid->resource,
							status);
					jabber_chat_remove_handle(chat, jid->resource);
				}
			}
		} else {
			if(!chat->conv) {
				chat->id = i++;
				chat->muc = muc;
				chat->conv = serv_got_joined_chat(js->gc, chat->id, room_jid);
				purple_conv_chat_set_nick(PURPLE_CONV_CHAT(chat->conv), chat->handle);

				jabber_chat_disco_traffic(chat);
			}

			jabber_buddy_track_resource(jb, jid->resource, priority, state,
					status);

			jabber_chat_track_handle(chat, jid->resource, real_jid, affiliation, role);

			if(!jabber_chat_find_buddy(chat->conv, jid->resource))
				purple_conv_chat_add_user(PURPLE_CONV_CHAT(chat->conv), jid->resource,
						real_jid, flags, !delayed);
			else
				purple_conv_chat_user_set_flags(PURPLE_CONV_CHAT(chat->conv), jid->resource,
						flags);
		}
		g_free(room_jid);
	} else {
		buddy_name = g_strdup_printf("%s%s%s", jid->node ? jid->node : "",
				jid->node ? "@" : "", jid->domain);
		if((b = purple_find_buddy(js->gc->account, buddy_name)) == NULL) {
			purple_debug_warning("jabber", "Got presence for unknown buddy %s on account %s (%x)",
				buddy_name, purple_account_get_username(js->gc->account), js->gc->account);
			jabber_id_free(jid);
			g_free(avatar_hash);
			g_free(buddy_name);
			g_free(status);
			return;
		}

		if(avatar_hash) {
			const char *avatar_hash2 = purple_buddy_icons_get_checksum_for_user(b);
			if(!avatar_hash2 || strcmp(avatar_hash, avatar_hash2)) {
				JabberIq *iq;
				xmlnode *vcard;

				/* XXX this is a crappy way of trying to prevent
				 * someone from spamming us with presence packets
				 * and causing us to DoS ourselves...what we really
				 * need is a queue system that can throttle itself,
				 * but i'm too tired to write that right now */
				if(!g_slist_find(js->pending_avatar_requests, jb)) {

					js->pending_avatar_requests = g_slist_prepend(js->pending_avatar_requests, jb);

					iq = jabber_iq_new(js, JABBER_IQ_GET);
					xmlnode_set_attrib(iq->node, "to", buddy_name);
					vcard = xmlnode_new_child(iq->node, "vCard");
					xmlnode_set_namespace(vcard, "vcard-temp");

					jabber_iq_set_callback(iq, jabber_vcard_parse_avatar, NULL);
					jabber_iq_send(iq);
				}
			}
		}

		if(state == JABBER_BUDDY_STATE_ERROR ||
				(type && (!strcmp(type, "unavailable") ||
						  !strcmp(type, "unsubscribed")))) {
			PurpleConversation *conv;

			jabber_buddy_remove_resource(jb, jid->resource);
			if((conv = jabber_find_unnormalized_conv(from, js->gc->account)))
				purple_conversation_set_name(conv, buddy_name);

		} else {
			jbr = jabber_buddy_track_resource(jb, jid->resource, priority,
					state, status);
		}

		if((found_jbr = jabber_buddy_find_resource(jb, NULL))) {
			if(!jbr || jbr == found_jbr) {
				purple_prpl_got_user_status(js->gc->account, buddy_name, jabber_buddy_state_get_status_id(state), "priority", found_jbr->priority, found_jbr->status ? "message" : NULL, found_jbr->status, NULL);
			}
		} else {
			purple_prpl_got_user_status(js->gc->account, buddy_name, "offline", status ? "message" : NULL, status, NULL);
		}
		g_free(buddy_name);
	}
	g_free(status);
	jabber_id_free(jid);
	g_free(avatar_hash);
}

void jabber_presence_subscription_set(JabberStream *js, const char *who, const char *type)
{
	xmlnode *presence = xmlnode_new("presence");

	xmlnode_set_attrib(presence, "to", who);
	xmlnode_set_attrib(presence, "type", type);

	jabber_send(js, presence);
	xmlnode_free(presence);
}

void purple_status_to_jabber(const PurpleStatus *status, JabberBuddyState *state, char **msg, int *priority)
{
	const char *status_id = NULL;
	const char *formatted_msg = NULL;

	if(state) *state = JABBER_BUDDY_STATE_UNKNOWN;
	if(msg) *msg = NULL;
	if(priority) *priority = 0;

	if(!status) {
		if(state) *state = JABBER_BUDDY_STATE_UNAVAILABLE;
	} else {
		if(state) {
			status_id = purple_status_get_id(status);
			*state = jabber_buddy_status_id_get_state(status_id);
		}

		if(msg) {
			formatted_msg = purple_status_get_attr_string(status, "message");

			/* if the message is blank, then there really isn't a message */
			if(formatted_msg && !*formatted_msg)
				formatted_msg = NULL;

			if(formatted_msg)
				*msg = purple_markup_strip_html(formatted_msg);
		}

		if(priority)
			*priority = purple_status_get_attr_int(status, "priority");
	}
}