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conference.c @ 8fdeaa5

Last change on this file since 8fdeaa5 was d6e2aa8, checked in by dequis <dx@…>, at 2015-11-09T12:21:46Z

Nuke imcb_clean_handle(), which was merging handles accidentally

Well, just deprecated and turned into a no-op. It was only used for
jabber anonymous MUCs, but this is something the IRC layer must take
care of. It stripped all whitespace, control and non-ascii characters,
breaking utf8 nicks support and accidentally merging contacts whose
cleaned-up handles were the same string.

For example, you could have two users with nicks ' ' and ' ' (one and
two spaces respectively) and imcb_clean_handle() would just merge them
into a single handle, , which makes them look like a single irc user.
The same thing happens with nicks that are entirely made of utf8.

Thanks to schoppenhauer from #bitlbee for reporting this and preparing a
test case channel!

Property mode set to 100644

File size: 13.8 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Conference rooms *
5	* *
6	* Copyright 2007-2012 Wilmer van der Gaast <wilmer@gaast.net> *
7	* *
8	* This program is free software; you can redistribute it and/or modify *
9	* it under the terms of the GNU General Public License as published by *
10	* the Free Software Foundation; either version 2 of the License, or *
11	* (at your option) any later version. *
12	* *
13	* This program is distributed in the hope that it will be useful, *
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	* GNU General Public License for more details. *
17	* *
18	* You should have received a copy of the GNU General Public License along *
19	* with this program; if not, write to the Free Software Foundation, Inc., *
20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
21	* *
22	\***************************************************************************/
23
24	#include "jabber.h"
25	#include "sha1.h"
26
27	static xt_status jabber_chat_join_failed(struct im_connection ic, struct xt_node node, struct xt_node *orig);
28	static xt_status jabber_chat_self_message(struct im_connection ic, struct xt_node node, struct xt_node *orig);
29
30	struct groupchat jabber_chat_join(struct im_connection ic, const char room, const char nick, const char *password)
31	{
32	struct jabber_chat *jc;
33	struct xt_node *node;
34	struct groupchat *c;
35	char *roomjid;
36
37	roomjid = g_strdup_printf("%s/%s", room, nick);
38	node = xt_new_node("x", NULL, NULL);
39	xt_add_attr(node, "xmlns", XMLNS_MUC);
40	if (password) {
41	xt_add_child(node, xt_new_node("password", password, NULL));
42	}
43	node = jabber_make_packet("presence", NULL, roomjid, node);
44	jabber_cache_add(ic, node, jabber_chat_join_failed);
45
46	if (!jabber_write_packet(ic, node)) {
47	g_free(roomjid);
48	return NULL;
49	}
50
51	jc = g_new0(struct jabber_chat, 1);
52	jc->name = jabber_normalize(room);
53
54	if ((jc->me = jabber_buddy_add(ic, roomjid)) == NULL) {
55	g_free(roomjid);
56	g_free(jc->name);
57	g_free(jc);
58	return NULL;
59	}
60
61	/* roomjid isn't normalized yet, and we need an original version
62	of the nick to send a proper presence update. */
63	jc->my_full_jid = roomjid;
64
65	c = imcb_chat_new(ic, room);
66	c->data = jc;
67
68	return c;
69	}
70
71	struct groupchat jabber_chat_with(struct im_connection ic, char *who)
72	{
73	struct jabber_data *jd = ic->proto_data;
74	struct jabber_chat *jc;
75	struct groupchat *c;
76	sha1_state_t sum;
77	double now = gettime();
78	char uuid, rjid, *cserv;
79
80	sha1_init(&sum);
81	sha1_append(&sum, (uint8_t *) ic->acc->user, strlen(ic->acc->user));
82	sha1_append(&sum, (uint8_t *) &now, sizeof(now));
83	sha1_append(&sum, (uint8_t *) who, strlen(who));
84	uuid = sha1_random_uuid(&sum);
85
86	if (jd->flags & JFLAG_GTALK) {
87	cserv = g_strdup("groupchat.google.com");
88	} else {
89	/* Guess... */
90	cserv = g_strdup_printf("conference.%s", jd->server);
91	}
92
93	rjid = g_strdup_printf("private-chat-%s@%s", uuid, cserv);
94	g_free(uuid);
95	g_free(cserv);
96
97	c = jabber_chat_join(ic, rjid, jd->username, NULL);
98	g_free(rjid);
99	if (c == NULL) {
100	return NULL;
101	}
102
103	jc = c->data;
104	jc->invite = g_strdup(who);
105
106	return c;
107	}
108
109	static xt_status jabber_chat_join_failed(struct im_connection ic, struct xt_node node, struct xt_node *orig)
110	{
111	struct jabber_error *err;
112	struct jabber_buddy *bud;
113	char *room;
114
115	room = xt_find_attr(orig, "to");
116	bud = jabber_buddy_by_jid(ic, room, 0);
117	err = jabber_error_parse(xt_find_node(node->children, "error"), XMLNS_STANZA_ERROR);
118	if (err) {
119	imcb_error(ic, "Error joining groupchat %s: %s%s%s", room, err->code,
120	err->text ? ": " : "", err->text ? err->text : "");
121	jabber_error_free(err);
122	}
123	if (bud) {
124	jabber_chat_free(jabber_chat_by_jid(ic, bud->bare_jid));
125	}
126
127	return XT_HANDLED;
128	}
129
130	static xt_status jabber_chat_self_message(struct im_connection ic, struct xt_node node, struct xt_node *orig)
131	{
132	/* This is a self message sent by this bitlbee - just drop it */
133	return XT_ABORT;
134	}
135
136	struct groupchat jabber_chat_by_jid(struct im_connection ic, const char *name)
137	{
138	char *normalized = jabber_normalize(name);
139	GSList *l;
140	struct groupchat *ret;
141	struct jabber_chat *jc;
142
143	for (l = ic->groupchats; l; l = l->next) {
144	ret = l->data;
145	jc = ret->data;
146	if (strcmp(normalized, jc->name) == 0) {
147	break;
148	}
149	}
150	g_free(normalized);
151
152	return l ? ret : NULL;
153	}
154
155	void jabber_chat_free(struct groupchat *c)
156	{
157	struct jabber_chat *jc = c->data;
158
159	jabber_buddy_remove_bare(c->ic, jc->name);
160
161	g_free(jc->my_full_jid);
162	g_free(jc->name);
163	g_free(jc->invite);
164	g_free(jc);
165
166	imcb_chat_free(c);
167	}
168
169	int jabber_chat_msg(struct groupchat c, char message, int flags)
170	{
171	struct im_connection *ic = c->ic;
172	struct jabber_chat *jc = c->data;
173	struct xt_node *node;
174
175	jc->flags \|= JCFLAG_MESSAGE_SENT;
176
177	node = xt_new_node("body", message, NULL);
178	node = jabber_make_packet("message", "groupchat", jc->name, node);
179
180	jabber_cache_add(ic, node, jabber_chat_self_message);
181
182	return !jabber_write_packet(ic, node);
183	}
184
185	int jabber_chat_topic(struct groupchat c, char topic)
186	{
187	struct im_connection *ic = c->ic;
188	struct jabber_chat *jc = c->data;
189	struct xt_node *node;
190
191	node = xt_new_node("subject", topic, NULL);
192	node = jabber_make_packet("message", "groupchat", jc->name, node);
193
194	if (!jabber_write_packet(ic, node)) {
195	xt_free_node(node);
196	return 0;
197	}
198	xt_free_node(node);
199
200	return 1;
201	}
202
203	int jabber_chat_leave(struct groupchat c, const char reason)
204	{
205	struct im_connection *ic = c->ic;
206	struct jabber_chat *jc = c->data;
207	struct xt_node *node;
208
209	node = xt_new_node("x", NULL, NULL);
210	xt_add_attr(node, "xmlns", XMLNS_MUC);
211	node = jabber_make_packet("presence", "unavailable", jc->my_full_jid, node);
212
213	if (!jabber_write_packet(ic, node)) {
214	xt_free_node(node);
215	return 0;
216	}
217	xt_free_node(node);
218
219	return 1;
220	}
221
222	void jabber_chat_invite(struct groupchat c, char who, char *message)
223	{
224	struct xt_node *node;
225	struct im_connection *ic = c->ic;
226	struct jabber_chat *jc = c->data;
227
228	node = xt_new_node("reason", message, NULL);
229
230	node = xt_new_node("invite", NULL, node);
231	xt_add_attr(node, "to", who);
232
233	node = xt_new_node("x", NULL, node);
234	xt_add_attr(node, "xmlns", XMLNS_MUC_USER);
235
236	node = jabber_make_packet("message", NULL, jc->name, node);
237
238	jabber_write_packet(ic, node);
239
240	xt_free_node(node);
241	}
242
243	/* Not really the same syntax as the normal pkt_ functions, but this isn't
244	called by the xmltree parser directly and this way I can add some extra
245	parameters so we won't have to repeat too many things done by the caller
246	already. */
247	void jabber_chat_pkt_presence(struct im_connection ic, struct jabber_buddy bud, struct xt_node *node)
248	{
249	struct groupchat *chat;
250	struct xt_node *c;
251	char *type = xt_find_attr(node, "type");
252	struct jabber_data *jd = ic->proto_data;
253	struct jabber_chat *jc;
254	char *s;
255
256	if ((chat = jabber_chat_by_jid(ic, bud->bare_jid)) == NULL) {
257	/* How could this happen?? We could do kill( self, 11 )
258	now or just wait for the OS to do it. :-) */
259	return;
260	}
261
262	jc = chat->data;
263
264	if (type == NULL && !(bud->flags & JBFLAG_IS_CHATROOM)) {
265	bud->flags \|= JBFLAG_IS_CHATROOM;
266	/* If this one wasn't set yet, this buddy just joined the chat.
267	Slightly hackish way of finding out eh? ;-) */
268
269	/* This is pretty messy... Here it sets ext_jid to the real
270	JID of the participant. Works for non-anonymized channels.
271	Might break if someone joins a chat twice, though. */
272	for (c = node->children; (c = xt_find_node(c, "x")); c = c->next) {
273	if ((s = xt_find_attr(c, "xmlns")) &&
274	(strcmp(s, XMLNS_MUC_USER) == 0)) {
275	struct xt_node *item;
276
277	item = xt_find_node(c->children, "item");
278	if ((s = xt_find_attr(item, "jid"))) {
279	/* Yay, found what we need. :-) */
280	bud->ext_jid = jabber_normalize(s);
281	break;
282	}
283	}
284	}
285
286	/* Make up some other handle, if necessary. */
287	if (bud->ext_jid == NULL) {
288	if (bud == jc->me) {
289	bud->ext_jid = g_strdup(jd->me);
290	} else {
291	int i;
292
293	/* Don't want the nick to be at the end, so let's
294	think of some slightly different notation to use
295	for anonymous groupchat participants in BitlBee. */
296	bud->ext_jid = g_strdup_printf("%s=%s", bud->resource, bud->bare_jid);
297
298	/* And strip any unwanted characters. */
299	for (i = 0; bud->resource[i]; i++) {
300	if (bud->ext_jid[i] == '=' \|\| bud->ext_jid[i] == '@') {
301	bud->ext_jid[i] = '_';
302	}
303	}
304	}
305	bud->flags \|= JBFLAG_IS_ANONYMOUS;
306	}
307
308	if (bud != jc->me && bud->flags & JBFLAG_IS_ANONYMOUS) {
309	/* If JIDs are anonymized, add them to the local
310	list for the duration of this chat. */
311	imcb_add_buddy(ic, bud->ext_jid, NULL);
312	imcb_buddy_nick_hint(ic, bud->ext_jid, bud->resource);
313	}
314
315	if (bud == jc->me && jc->invite != NULL) {
316	char *msg = g_strdup_printf("Please join me in room %s", jc->name);
317	jabber_chat_invite(chat, jc->invite, msg);
318	g_free(jc->invite);
319	g_free(msg);
320	jc->invite = NULL;
321	}
322
323	s = strchr(bud->ext_jid, '/');
324	if (s) {
325	s = 0; / Should NEVER be NULL, but who knows... */
326	}
327	imcb_chat_add_buddy(chat, bud->ext_jid);
328	if (s) {
329	*s = '/';
330	}
331	} else if (type) { /* type can only be NULL or "unavailable" in this function */
332	if ((bud->flags & JBFLAG_IS_CHATROOM) && bud->ext_jid) {
333	char *reason = NULL;
334	char *status = NULL;
335	char *status_text = NULL;
336
337	if ((c = xt_find_node_by_attr(node->children, "x", "xmlns", XMLNS_MUC_USER))) {
338	struct xt_node *c2 = c->children;
339
340	while ((c2 = xt_find_node(c2, "status"))) {
341	char *code = xt_find_attr(c2, "code");
342	if (g_strcmp0(code, "301") == 0) {
343	status = "Banned";
344	break;
345	} else if (g_strcmp0(code, "303") == 0) {
346	/* This could be handled in a cleverer way,
347	* but let's just show a literal part/join for now */
348	status = "Changing nicks";
349	break;
350	} else if (g_strcmp0(code, "307") == 0) {
351	status = "Kicked";
352	break;
353	}
354	c2 = c2->next;
355	}
356
357	/* Sometimes the status message is in presence/x/item/reason */
358	if ((c2 = xt_find_path(c, "item/reason")) && c2->text && c2->text_len) {
359	status_text = c2->text;
360	}
361	}
362
363	/* Sometimes the status message is right inside <presence> */
364	if ((c = xt_find_node(node->children, "status")) && c->text && c->text_len) {
365	status_text = c->text;
366	}
367
368	if (status_text && status) {
369	reason = g_strdup_printf("%s: %s", status, status_text);
370	} else {
371	reason = g_strdup(status_text ? : status);
372	}
373
374	s = strchr(bud->ext_jid, '/');
375	if (s) {
376	*s = 0;
377	}
378	imcb_chat_remove_buddy(chat, bud->ext_jid, reason);
379	if (bud != jc->me && bud->flags & JBFLAG_IS_ANONYMOUS) {
380	imcb_remove_buddy(ic, bud->ext_jid, reason);
381	}
382	if (s) {
383	*s = '/';
384	}
385
386	g_free(reason);
387	}
388
389	if (bud == jc->me) {
390	jabber_chat_free(chat);
391	}
392	}
393	}
394
395	void jabber_chat_pkt_message(struct im_connection ic, struct jabber_buddy bud, struct xt_node *node)
396	{
397	struct xt_node *subject = xt_find_node(node->children, "subject");
398	struct xt_node *body = xt_find_node(node->children, "body");
399	struct groupchat *chat = NULL;
400	struct jabber_chat *jc = NULL;
401	char *from = NULL;
402	char *nick = NULL;
403	char *final_from = NULL;
404	char *bare_jid = NULL;
405	guint32 flags = 0;
406
407	from = (bud) ? bud->full_jid : xt_find_attr(node, "from");
408
409	if (from) {
410	nick = strchr(from, '/');
411	if (nick) {
412	*nick = 0;
413	}
414	chat = jabber_chat_by_jid(ic, from);
415	if (nick) {
416	*nick = '/';
417	nick++;
418	}
419	}
420
421	jc = (chat) ? chat->data : NULL;
422
423	if (!bud) {
424	struct xt_node *c;
425	char *s;
426
427	/* Try some clever stuff to find out the real JID here */
428	c = xt_find_node_by_attr(node->children, "delay", "xmlns", XMLNS_DELAY);
429
430	if (c && ((s = xt_find_attr(c, "from")) \|\|
431	(s = xt_find_attr(c, "from_jid")))) {
432	/* This won't be useful if it's the MUC JID */
433	if (!(jc && jabber_compare_jid(s, jc->name))) {
434	/* Hopefully this one makes more sense! */
435	bud = jabber_buddy_by_jid(ic, s, GET_BUDDY_FIRST \| GET_BUDDY_CREAT);
436	}
437	}
438
439	}
440
441	if (subject && chat) {
442	char *subject_text = subject->text_len > 0 ? subject->text : "";
443	if (g_strcmp0(chat->topic, subject_text) != 0) {
444	bare_jid = (bud) ? jabber_get_bare_jid(bud->ext_jid) : NULL;
445	imcb_chat_topic(chat, bare_jid, subject_text,
446	jabber_get_timestamp(node));
447	g_free(bare_jid);
448	bare_jid = NULL;
449	}
450	}
451
452	if (body == NULL \|\| body->text_len == 0) {
453	/* Meh. Empty messages aren't very interesting, no matter
454	how much some servers love to send them. */
455	return;
456	}
457
458	if (chat == NULL) {
459	if (nick == NULL) {
460	imcb_log(ic, "System message from unknown groupchat %s: %s", from, body->text);
461	} else {
462	imcb_log(ic, "Groupchat message from unknown JID %s: %s", from, body->text);
463	}
464
465	return;
466	} else if (chat != NULL && bud == NULL && nick == NULL) {
467	imcb_chat_log(chat, "From conference server: %s", body->text);
468	return;
469	} else if (jc && jc->flags & JCFLAG_MESSAGE_SENT && bud == jc->me &&
470	(jabber_cache_handle_packet(ic, node) == XT_ABORT)) {
471	/* Self message marked by this bitlbee, don't show it */
472	return;
473	}
474
475	if (bud) {
476	bare_jid = jabber_get_bare_jid(bud->ext_jid ? bud->ext_jid : bud->full_jid);
477	final_from = bare_jid;
478	flags = (bud == jc->me) ? OPT_SELFMESSAGE : 0;
479	} else {
480	final_from = nick;
481	}
482
483	imcb_chat_msg(chat, final_from, body->text, flags, jabber_get_timestamp(node));
484
485	g_free(bare_jid);
486	}

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source: protocols/jabber/conference.c @ 8fdeaa5

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