message.c

Linux下的多协议即时通讯程序源代码

/*
 * purple - Jabber Protocol Plugin
 *
 * Copyright (C) 2003, Nathan Walp <[e-mail]>
 *
 * 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
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include "internal.h"

#include "debug.h"
#include "notify.h"
#include "server.h"
#include "util.h"

#include "buddy.h"
#include "chat.h"
#include "google.h"
#include "message.h"
#include "xmlnode.h"

void jabber_message_free(JabberMessage *jm)
{
	g_free(jm->from);
	g_free(jm->to);
	g_free(jm->id);
	g_free(jm->subject);
	g_free(jm->body);
	g_free(jm->xhtml);
	g_free(jm->password);
	g_list_free(jm->etc);

	g_free(jm);
}

static void handle_chat(JabberMessage *jm)
{
	JabberID *jid = jabber_id_new(jm->from);
	char *from;

	JabberBuddy *jb;
	JabberBuddyResource *jbr;

	if(!jid)
		return;

	jb = jabber_buddy_find(jm->js, jm->from, TRUE);
	jbr = jabber_buddy_find_resource(jb, jid->resource);

	if(jabber_find_unnormalized_conv(jm->from, jm->js->gc->account)) {
		from = g_strdup(jm->from);
	} else  if(jid->node) {
		if(jid->resource) {
			PurpleConversation *conv;

			from = g_strdup_printf("%s@%s", jid->node, jid->domain);
			conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, from, jm->js->gc->account);
			if(conv) {
				purple_conversation_set_name(conv, jm->from);
				}
			g_free(from);
		}
		from = g_strdup(jm->from);
	} else {
		from = g_strdup(jid->domain);
	}

	if(!jm->xhtml && !jm->body) {
		if(JM_STATE_COMPOSING == jm->chat_state) {
			serv_got_typing(jm->js->gc, from, 0, PURPLE_TYPING);
		} else if(JM_STATE_PAUSED == jm->chat_state) {
			serv_got_typing(jm->js->gc, from, 0, PURPLE_TYPED);
		} else if(JM_STATE_GONE == jm->chat_state) {
			PurpleConversation *conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM,
					from, jm->js->gc->account);
			if (conv && jid->node && jid->domain) {
				char buf[256];
				PurpleBuddy *buddy;

				g_snprintf(buf, sizeof(buf), "%s@%s", jid->node, jid->domain);

				if ((buddy = purple_find_buddy(jm->js->gc->account, buf))) {
					const char *who;
					char *escaped;

					who = purple_buddy_get_alias(buddy);
					escaped = g_markup_escape_text(who, -1);

					g_snprintf(buf, sizeof(buf),
					           _("%s has left the conversation."), escaped);

					/* At some point when we restructure PurpleConversation,
					 * this should be able to be implemented by removing the
					 * user from the conversation like we do with chats now. */
					purple_conversation_write(conv, "", buf,
					                        PURPLE_MESSAGE_SYSTEM, time(NULL));
				}
			}
			serv_got_typing_stopped(jm->js->gc, from);
			
		} else {
			serv_got_typing_stopped(jm->js->gc, from);
		}
	} else {
		if(jbr) {
			if(JM_TS_JEP_0085 == (jm->typing_style & JM_TS_JEP_0085)) {
				jbr->chat_states = JABBER_CHAT_STATES_SUPPORTED;
			} else {
				jbr->chat_states = JABBER_CHAT_STATES_UNSUPPORTED;
			}

			if(JM_TS_JEP_0022 == (jm->typing_style & JM_TS_JEP_0022)) {
				jbr->capabilities |= JABBER_CAP_COMPOSING;
			}

			if(jbr->thread_id)
				g_free(jbr->thread_id);
			jbr->thread_id = g_strdup(jbr->thread_id);
		}
		
		if (jm->js->googletalk && jm->xhtml == NULL) {
			char *tmp = jm->body;
			jm->body = jabber_google_format_to_html(jm->body);
			g_free(tmp);
		}
		serv_got_im(jm->js->gc, from, jm->xhtml ? jm->xhtml : jm->body, 0,
				jm->sent);
	}


	g_free(from);
	jabber_id_free(jid);
}

static void handle_headline(JabberMessage *jm)
{
	char *title;
	GString *body = g_string_new("");
	GList *etc;

	title = g_strdup_printf(_("Message from %s"), jm->from);

	if(jm->xhtml)
		g_string_append(body, jm->xhtml);
	else if(jm->body)
		g_string_append(body, jm->body);

	for(etc = jm->etc; etc; etc = etc->next) {
		xmlnode *x = etc->data;
		const char *xmlns = xmlnode_get_namespace(x);
		if(xmlns && !strcmp(xmlns, "jabber:x:oob")) {
			xmlnode *url, *desc;
			char *urltxt, *desctxt;

			url = xmlnode_get_child(x, "url");
			desc = xmlnode_get_child(x, "desc");

			if(!url || !desc)
				continue;

			urltxt = xmlnode_get_data(url);
			desctxt = xmlnode_get_data(desc);

			/* I'm all about ugly hacks */
			if(body->len && jm->body && !strcmp(body->str, jm->body))
				g_string_printf(body, "<a href='%s'>%s</a>",
						urltxt, desctxt);
			else
				g_string_append_printf(body, "<br/><a href='%s'>%s</a>",
						urltxt, desctxt);

			g_free(urltxt);
			g_free(desctxt);
		}
	}

	purple_notify_formatted(jm->js->gc, title, jm->subject ? jm->subject : title,
			NULL, body->str, NULL, NULL);

	g_free(title);
	g_string_free(body, TRUE);
}

static void handle_groupchat(JabberMessage *jm)
{
	JabberID *jid = jabber_id_new(jm->from);
	JabberChat *chat;

	if(!jid)
		return;

	chat = jabber_chat_find(jm->js, jid->node, jid->domain);

	if(!chat)
		return;

	if(jm->subject) {
		purple_conv_chat_set_topic(PURPLE_CONV_CHAT(chat->conv), jid->resource,
				jm->subject);
		if(!jm->xhtml && !jm->body) {
			char *msg, *tmp, *tmp2;
			tmp = g_markup_escape_text(jm->subject, -1);
			tmp2 = purple_markup_linkify(tmp);
			if(jid->resource)
				msg = g_strdup_printf(_("%s has set the topic to: %s"), jid->resource, tmp2);
			else
				msg = g_strdup_printf(_("The topic is: %s"), tmp2);
			purple_conv_chat_write(PURPLE_CONV_CHAT(chat->conv), "", msg, PURPLE_MESSAGE_SYSTEM, jm->sent);
			g_free(tmp);
			g_free(tmp2);
			g_free(msg);
		}
	}

	if(jm->xhtml || jm->body) {
		if(jid->resource)
			serv_got_chat_in(jm->js->gc, chat->id, jid->resource,
							jm->delayed ? PURPLE_MESSAGE_DELAYED : 0,
							jm->xhtml ? jm->xhtml : jm->body, jm->sent);
		else if(chat->muc)
			purple_conv_chat_write(PURPLE_CONV_CHAT(chat->conv), "",
							jm->xhtml ? jm->xhtml : jm->body,
							PURPLE_MESSAGE_SYSTEM, jm->sent);
	}

	jabber_id_free(jid);
}

static void handle_groupchat_invite(JabberMessage *jm)
{
	GHashTable *components;
	JabberID *jid = jabber_id_new(jm->to);

	if(!jid)
		return;

	components = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);

	g_hash_table_replace(components, "room", g_strdup(jid->node));
	g_hash_table_replace(components, "server", g_strdup(jid->domain));
	g_hash_table_replace(components, "handle", g_strdup(jm->js->user->node));
	g_hash_table_replace(components, "password", g_strdup(jm->password));

	jabber_id_free(jid);
	serv_got_chat_invite(jm->js->gc, jm->to, jm->from, jm->body, components);
}

static void handle_error(JabberMessage *jm)
{
	char *buf;

	if(!jm->body)
		return;

	buf = g_strdup_printf(_("Message delivery to %s failed: %s"),
			jm->from, jm->error ? jm->error : "");

	purple_notify_formatted(jm->js->gc, _("XMPP Message Error"), _("XMPP Message Error"), buf,
			jm->xhtml ? jm->xhtml : jm->body, NULL, NULL);

	g_free(buf);
}

void jabber_message_parse(JabberStream *js, xmlnode *packet)
{
	JabberMessage *jm;
	const char *type;
	xmlnode *child;

	jm = g_new0(JabberMessage, 1);
	jm->js = js;
	jm->sent = time(NULL);
	jm->delayed = FALSE;

	type = xmlnode_get_attrib(packet, "type");

	if(type) {
		if(!strcmp(type, "normal"))
			jm->type = JABBER_MESSAGE_NORMAL;
	else if(!strcmp(type, "chat"))
			jm->type = JABBER_MESSAGE_CHAT;
		else if(!strcmp(type, "groupchat"))
			jm->type = JABBER_MESSAGE_GROUPCHAT;
		else if(!strcmp(type, "headline"))
			jm->type = JABBER_MESSAGE_HEADLINE;
		else if(!strcmp(type, "error"))
			jm->type = JABBER_MESSAGE_ERROR;
		else
			jm->type = JABBER_MESSAGE_OTHER;
	} else {
		jm->type = JABBER_MESSAGE_NORMAL;
	}

	jm->from = g_strdup(xmlnode_get_attrib(packet, "from"));
	jm->to = g_strdup(xmlnode_get_attrib(packet, "to"));
	jm->id = g_strdup(xmlnode_get_attrib(packet, "id"));

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

		if(!strcmp(child->name, "subject")) {
			if(!jm->subject)
				jm->subject = xmlnode_get_data(child);
		} else if(!strcmp(child->name, "thread")) {
			if(!jm->thread_id)
				jm->thread_id = xmlnode_get_data(child);
		} else if(!strcmp(child->name, "body")) {
			if(!jm->body) {
				char *msg = xmlnode_to_str(child, NULL);
				jm->body = purple_strdup_withhtml(msg);
				g_free(msg);
			}
		} else if(!strcmp(child->name, "html")) {
			if(!jm->xhtml && xmlnode_get_child(child, "body")) {
				char *c;
				jm->xhtml = xmlnode_to_str(child, NULL);
			        /* Convert all newlines to whitespace. Technically, even regular, non-XML HTML is supposed to ignore newlines, but Pidgin has, as convention
			 	 * treated \n as a newline for compatibility with other protocols
				 */
				for (c = jm->xhtml; *c != '\0'; c++) {
					if (*c == '\n') 
						*c = ' ';
				}
			}
		} else if(!strcmp(child->name, "active")) {
			jm->chat_state = JM_STATE_ACTIVE;
			jm->typing_style |= JM_TS_JEP_0085;
		} else if(!strcmp(child->name, "composing")) {
			jm->chat_state = JM_STATE_COMPOSING;
			jm->typing_style |= JM_TS_JEP_0085;
		} else if(!strcmp(child->name, "paused")) {