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source: protocols/msn/msn_util.c @ 1c8e5f7

Last change on this file since 1c8e5f7 was 70ac477, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-06-11T11:34:39Z
Create new MSN groups when necessary.
Property mode set to `100644`
File size: 10.3 KB

Line
1	/********************************************************************\
2	* BitlBee -- An IRC to other IM-networks gateway *
3	* *
4	* Copyright 2002-2004 Wilmer van der Gaast and others *
5	\********************************************************************/
6
7	/* MSN module - Miscellaneous utilities */
8
9	/*
10	This program is free software; you can redistribute it and/or modify
11	it under the terms of the GNU General Public License as published by
12	the Free Software Foundation; either version 2 of the License, or
13	(at your option) any later version.
14
15	This program is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU General Public License for more details.
19
20	You should have received a copy of the GNU General Public License with
21	the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
22	if not, write to the Free Software Foundation, Inc., 59 Temple Place,
23	Suite 330, Boston, MA 02111-1307 USA
24	*/
25
26	#include "nogaim.h"
27	#include "msn.h"
28	#include <ctype.h>
29
30	int msn_write( struct im_connection ic, char s, int len )
31	{
32	struct msn_data *md = ic->proto_data;
33	int st;
34
35	st = write( md->fd, s, len );
36	if( st != len )
37	{
38	imcb_error( ic, "Short write() to main server" );
39	imc_logout( ic, TRUE );
40	return 0;
41	}
42
43	return 1;
44	}
45
46	int msn_logged_in( struct im_connection *ic )
47	{
48	imcb_connected( ic );
49
50	return( 0 );
51	}
52
53	int msn_buddy_list_add( struct im_connection ic, const char list, const char who, const char realname_, const char *group )
54	{
55	struct msn_data *md = ic->proto_data;
56	char buf[1024], *realname, groupid[8];
57
58	*groupid = '\0';
59	if( group )
60	{
61	int i;
62	for( i = 0; i < md->groupcount; i ++ )
63	if( g_strcasecmp( md->grouplist[i], group ) == 0 )
64	{
65	g_snprintf( groupid, sizeof( groupid ), " %d", i );
66	break;
67	}
68
69	if( *groupid == '\0' )
70	{
71	/* Have to create this group, it doesn't exist yet. */
72	struct msn_groupadd *ga;
73	GSList *l;
74
75	for( l = md->grpq; l; l = l->next )
76	{
77	ga = l->data;
78	if( g_strcasecmp( ga->group, group ) == 0 )
79	break;
80	}
81
82	ga = g_new0( struct msn_groupadd, 1 );
83	ga->who = g_strdup( who );
84	ga->group = g_strdup( group );
85	md->grpq = g_slist_prepend( md->grpq, ga );
86
87	if( l == NULL )
88	{
89	char *groupname = msn_http_encode( group );
90	g_snprintf( buf, sizeof( buf ), "ADG %d %s %d\r\n", ++md->trId, groupname, 0 );
91	g_free( groupname );
92	return msn_write( ic, buf, strlen( buf ) );
93	}
94	else
95	{
96	/* This can happen if the user's doing lots of adds to a
97	new group at once; we're still waiting for the server
98	to confirm group creation. */
99	return 1;
100	}
101	}
102	}
103
104	realname = msn_http_encode( realname_ );
105	g_snprintf( buf, sizeof( buf ), "ADD %d %s %s %s%s\r\n", ++md->trId, list, who, realname, groupid );
106	g_free( realname );
107
108	return msn_write( ic, buf, strlen( buf ) );
109	}
110
111	int msn_buddy_list_remove( struct im_connection ic, char list, char *who )
112	{
113	struct msn_data *md = ic->proto_data;
114	char buf[1024];
115
116	g_snprintf( buf, sizeof( buf ), "REM %d %s %s\r\n", ++md->trId, list, who );
117	if( msn_write( ic, buf, strlen( buf ) ) )
118	return( 1 );
119
120	return( 0 );
121	}
122
123	struct msn_buddy_ask_data
124	{
125	struct im_connection *ic;
126	char *handle;
127	char *realname;
128	};
129
130	static void msn_buddy_ask_yes( void *data )
131	{
132	struct msn_buddy_ask_data *bla = data;
133
134	msn_buddy_list_add( bla->ic, "AL", bla->handle, bla->realname, NULL );
135
136	imcb_ask_add( bla->ic, bla->handle, NULL );
137
138	g_free( bla->handle );
139	g_free( bla->realname );
140	g_free( bla );
141	}
142
143	static void msn_buddy_ask_no( void *data )
144	{
145	struct msn_buddy_ask_data *bla = data;
146
147	msn_buddy_list_add( bla->ic, "BL", bla->handle, bla->realname, NULL );
148
149	g_free( bla->handle );
150	g_free( bla->realname );
151	g_free( bla );
152	}
153
154	void msn_buddy_ask( struct im_connection ic, char handle, char *realname )
155	{
156	struct msn_buddy_ask_data *bla = g_new0( struct msn_buddy_ask_data, 1 );
157	char buf[1024];
158
159	bla->ic = ic;
160	bla->handle = g_strdup( handle );
161	bla->realname = g_strdup( realname );
162
163	g_snprintf( buf, sizeof( buf ),
164	"The user %s (%s) wants to add you to his/her buddy list.",
165	handle, realname );
166	imcb_ask( ic, buf, bla, msn_buddy_ask_yes, msn_buddy_ask_no );
167	}
168
169	char msn_findheader( char text, char *header, int len )
170	{
171	int hlen = strlen( header ), i;
172	char *ret;
173
174	if( len == 0 )
175	len = strlen( text );
176
177	i = 0;
178	while( ( i + hlen ) < len )
179	{
180	/* Maybe this is a bit over-commented, but I just hate this part... */
181	if( g_strncasecmp( text + i, header, hlen ) == 0 )
182	{
183	/* Skip to the (probable) end of the header */
184	i += hlen;
185
186	/* Find the first non-[: \t] character */
187	while( i < len && ( text[i] == ':' \|\| text[i] == ' ' \|\| text[i] == '\t' ) ) i ++;
188
189	/* Make sure we're still inside the string */
190	if( i >= len ) return( NULL );
191
192	/* Save the position */
193	ret = text + i;
194
195	/* Search for the end of this line */
196	while( i < len && text[i] != '\r' && text[i] != '\n' ) i ++;
197
198	/* Make sure we're still inside the string */
199	if( i >= len ) return( NULL );
200
201	/* Copy the found data */
202	return( g_strndup( ret, text + i - ret ) );
203	}
204
205	/* This wasn't the header we were looking for, skip to the next line. */
206	while( i < len && ( text[i] != '\r' && text[i] != '\n' ) ) i ++;
207	while( i < len && ( text[i] == '\r' \|\| text[i] == '\n' ) ) i ++;
208
209	/* End of headers? */
210	if( ( i >= 4 && strncmp( text + i - 4, "\r\n\r\n", 4 ) == 0 ) \|\|
211	( i >= 2 && ( strncmp( text + i - 2, "\n\n", 2 ) == 0 \|\|
212	strncmp( text + i - 2, "\r\r", 2 ) == 0 ) ) )
213	{
214	break;
215	}
216	}
217
218	return( NULL );
219	}
220
221	/* NOT thread-safe, but that's not a problem for now... */
222	char *msn_linesplit( char line )
223	{
224	static char **ret = NULL;
225	static int size = 3;
226	int i, n = 0;
227
228	if( ret == NULL )
229	ret = g_new0( char*, size );
230
231	for( i = 0; line[i] && line[i] == ' '; i ++ );
232	if( line[i] )
233	{
234	ret[n++] = line + i;
235	for( i ++; line[i]; i ++ )
236	{
237	if( line[i] == ' ' )
238	line[i] = 0;
239	else if( line[i] != ' ' && !line[i-1] )
240	ret[n++] = line + i;
241
242	if( n >= size )
243	ret = g_renew( char*, ret, size += 2 );
244	}
245	}
246	ret[n] = NULL;
247
248	return( ret );
249	}
250
251	/* This one handles input from a MSN Messenger server. Both the NS and SB servers usually give
252	commands, but sometimes they give additional data (payload). This function tries to handle
253	this all in a nice way and send all data to the right places. */
254
255	/* Return values: -1: Read error, abort connection.
256	0: Command reported error; Abort immediately. (The connection does not exist anymore)
257	1: OK */
258
259	int msn_handler( struct msn_handler_data *h )
260	{
261	int st;
262
263	h->rxq = g_renew( char, h->rxq, h->rxlen + 1024 );
264	st = read( h->fd, h->rxq + h->rxlen, 1024 );
265	h->rxlen += st;
266
267	if( st <= 0 )
268	return( -1 );
269
270	while( st )
271	{
272	int i;
273
274	if( h->msglen == 0 )
275	{
276	for( i = 0; i < h->rxlen; i ++ )
277	{
278	if( h->rxq[i] == '\r' \|\| h->rxq[i] == '\n' )
279	{
280	char cmd_text, *cmd;
281	int count;
282
283	cmd_text = g_strndup( h->rxq, i );
284	cmd = msn_linesplit( cmd_text );
285	for( count = 0; cmd[count]; count ++ );
286	st = h->exec_command( h->data, cmd, count );
287	g_free( cmd_text );
288
289	/* If the connection broke, don't continue. We don't even exist anymore. */
290	if( !st )
291	return( 0 );
292
293	if( h->msglen )
294	h->cmd_text = g_strndup( h->rxq, i );
295
296	/* Skip to the next non-emptyline */
297	while( i < h->rxlen && ( h->rxq[i] == '\r' \|\| h->rxq[i] == '\n' ) ) i ++;
298
299	break;
300	}
301	}
302
303	/* If we reached the end of the buffer, there's still an incomplete command there.
304	Return and wait for more data. */
305	if( i == h->rxlen && h->rxq[i-1] != '\r' && h->rxq[i-1] != '\n' )
306	break;
307	}
308	else
309	{
310	char msg, *cmd;
311	int count;
312
313	/* Do we have the complete message already? */
314	if( h->msglen > h->rxlen )
315	break;
316
317	msg = g_strndup( h->rxq, h->msglen );
318	cmd = msn_linesplit( h->cmd_text );
319	for( count = 0; cmd[count]; count ++ );
320
321	st = h->exec_message( h->data, msg, h->msglen, cmd, count );
322	g_free( msg );
323	g_free( h->cmd_text );
324	h->cmd_text = NULL;
325
326	if( !st )
327	return( 0 );
328
329	i = h->msglen;
330	h->msglen = 0;
331	}
332
333	/* More data after this block? */
334	if( i < h->rxlen )
335	{
336	char *tmp;
337
338	tmp = g_memdup( h->rxq + i, h->rxlen - i );
339	g_free( h->rxq );
340	h->rxq = tmp;
341	h->rxlen -= i;
342	i = 0;
343	}
344	else
345	/* If not, reset the rx queue and get lost. */
346	{
347	g_free( h->rxq );
348	h->rxq = g_new0( char, 1 );
349	h->rxlen = 0;
350	return( 1 );
351	}
352	}
353
354	return( 1 );
355	}
356
357	/* The difference between this function and the normal http_encode() function
358	is that this one escapes every 7-bit ASCII character because this is said
359	to avoid some lame server-side checks when setting a real-name. Also,
360	non-ASCII characters are not escaped because MSN servers don't seem to
361	appreciate that! */
362	char msn_http_encode( const char input )
363	{
364	char ret, s;
365	int i;
366
367	ret = s = g_new0( char, strlen( input ) * 3 + 1 );
368	for( i = 0; input[i]; i ++ )
369	if( input[i] & 128 )
370	{
371	*s = input[i];
372	s ++;
373	}
374	else
375	{
376	g_snprintf( s, 4, "%%%02X", input[i] );
377	s += 3;
378	}
379
380	return ret;
381	}
382
383	void msn_msgq_purge( struct im_connection ic, GSList *list )
384	{
385	struct msn_message *m;
386	GString *ret;
387	GSList *l;
388
389	l = *list;
390	if( l == NULL )
391	return;
392
393	m = l->data;
394	ret = g_string_sized_new( 1024 );
395	g_string_printf( ret, "Warning: Cleaning up MSN (switchboard) connection with unsent "
396	"messages to %s:", m->who ? m->who : "unknown recipient" );
397
398	while( l )
399	{
400	m = l->data;
401
402	g_string_append_printf( ret, "\n%s", m->text );
403
404	g_free( m->who );
405	g_free( m->text );
406	g_free( m );
407
408	l = l->next;
409	}
410	g_slist_free( *list );
411	*list = NULL;
412
413	imcb_log( ic, "%s", ret->str );
414	g_string_free( ret, TRUE );
415	}
416
417	gboolean msn_set_display_name( struct im_connection ic, const char rawname )
418	{
419	char *fn = msn_http_encode( rawname );
420	struct msn_data *md = ic->proto_data;
421	char buf[1024];
422
423	g_snprintf( buf, sizeof( buf ), "REA %d %s %s\r\n", ++md->trId, ic->acc->user, fn );
424	g_free( fn );
425
426	return msn_write( ic, buf, strlen( buf ) ) != 0;
427	}

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