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source: protocols/msn/msn_util.c @ f00e3ad

1.2-5

Last change on this file since f00e3ad was 43462708, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-01-06T12:37:55Z
More consistency in error/warning errors. Until now "WARNING:" was usually in upper case while "Error:" wasn't .... that doesn't really make sense.
Property mode set to `100644`
File size: 8.9 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, char list, char who, char realname_ )
54	{
55	struct msn_data *md = ic->proto_data;
56	char buf[1024], *realname;
57
58	realname = msn_http_encode( realname_ );
59
60	g_snprintf( buf, sizeof( buf ), "ADD %d %s %s %s\r\n", ++md->trId, list, who, realname );
61	if( msn_write( ic, buf, strlen( buf ) ) )
62	{
63	g_free( realname );
64
65	return( 1 );
66	}
67
68	g_free( realname );
69
70	return( 0 );
71	}
72
73	int msn_buddy_list_remove( struct im_connection ic, char list, char *who )
74	{
75	struct msn_data *md = ic->proto_data;
76	char buf[1024];
77
78	g_snprintf( buf, sizeof( buf ), "REM %d %s %s\r\n", ++md->trId, list, who );
79	if( msn_write( ic, buf, strlen( buf ) ) )
80	return( 1 );
81
82	return( 0 );
83	}
84
85	struct msn_buddy_ask_data
86	{
87	struct im_connection *ic;
88	char *handle;
89	char *realname;
90	};
91
92	static void msn_buddy_ask_yes( gpointer w, struct msn_buddy_ask_data *bla )
93	{
94	msn_buddy_list_add( bla->ic, "AL", bla->handle, bla->realname );
95
96	if( imcb_find_buddy( bla->ic, bla->handle ) == NULL )
97	imcb_ask_add( bla->ic, bla->handle, NULL );
98
99	g_free( bla->handle );
100	g_free( bla->realname );
101	g_free( bla );
102	}
103
104	static void msn_buddy_ask_no( gpointer w, struct msn_buddy_ask_data *bla )
105	{
106	msn_buddy_list_add( bla->ic, "BL", bla->handle, bla->realname );
107
108	g_free( bla->handle );
109	g_free( bla->realname );
110	g_free( bla );
111	}
112
113	void msn_buddy_ask( struct im_connection ic, char handle, char *realname )
114	{
115	struct msn_buddy_ask_data *bla = g_new0( struct msn_buddy_ask_data, 1 );
116	char buf[1024];
117
118	bla->ic = ic;
119	bla->handle = g_strdup( handle );
120	bla->realname = g_strdup( realname );
121
122	g_snprintf( buf, sizeof( buf ),
123	"The user %s (%s) wants to add you to his/her buddy list.",
124	handle, realname );
125	imcb_ask( ic, buf, bla, msn_buddy_ask_yes, msn_buddy_ask_no );
126	}
127
128	char msn_findheader( char text, char *header, int len )
129	{
130	int hlen = strlen( header ), i;
131	char *ret;
132
133	if( len == 0 )
134	len = strlen( text );
135
136	i = 0;
137	while( ( i + hlen ) < len )
138	{
139	/* Maybe this is a bit over-commented, but I just hate this part... */
140	if( g_strncasecmp( text + i, header, hlen ) == 0 )
141	{
142	/* Skip to the (probable) end of the header */
143	i += hlen;
144
145	/* Find the first non-[: \t] character */
146	while( i < len && ( text[i] == ':' \|\| text[i] == ' ' \|\| text[i] == '\t' ) ) i ++;
147
148	/* Make sure we're still inside the string */
149	if( i >= len ) return( NULL );
150
151	/* Save the position */
152	ret = text + i;
153
154	/* Search for the end of this line */
155	while( i < len && text[i] != '\r' && text[i] != '\n' ) i ++;
156
157	/* Make sure we're still inside the string */
158	if( i >= len ) return( NULL );
159
160	/* Copy the found data */
161	return( g_strndup( ret, text + i - ret ) );
162	}
163
164	/* This wasn't the header we were looking for, skip to the next line. */
165	while( i < len && ( text[i] != '\r' && text[i] != '\n' ) ) i ++;
166	while( i < len && ( text[i] == '\r' \|\| text[i] == '\n' ) ) i ++;
167
168	/* End of headers? */
169	if( strncmp( text + i - 2, "\n\n", 2 ) == 0 \|\|
170	strncmp( text + i - 4, "\r\n\r\n", 4 ) == 0 \|\|
171	strncmp( text + i - 2, "\r\r", 2 ) == 0 )
172	{
173	break;
174	}
175	}
176
177	return( NULL );
178	}
179
180	/* NOT thread-safe, but that's not a problem for now... */
181	char *msn_linesplit( char line )
182	{
183	static char **ret = NULL;
184	static int size = 3;
185	int i, n = 0;
186
187	if( ret == NULL )
188	ret = g_new0( char*, size );
189
190	for( i = 0; line[i] && line[i] == ' '; i ++ );
191	if( line[i] )
192	{
193	ret[n++] = line + i;
194	for( i ++; line[i]; i ++ )
195	{
196	if( line[i] == ' ' )
197	line[i] = 0;
198	else if( line[i] != ' ' && !line[i-1] )
199	ret[n++] = line + i;
200
201	if( n >= size )
202	ret = g_renew( char*, ret, size += 2 );
203	}
204	}
205	ret[n] = NULL;
206
207	return( ret );
208	}
209
210	/* This one handles input from a MSN Messenger server. Both the NS and SB servers usually give
211	commands, but sometimes they give additional data (payload). This function tries to handle
212	this all in a nice way and send all data to the right places. */
213
214	/* Return values: -1: Read error, abort connection.
215	0: Command reported error; Abort immediately. (The connection does not exist anymore)
216	1: OK */
217
218	int msn_handler( struct msn_handler_data *h )
219	{
220	int st;
221
222	h->rxq = g_renew( char, h->rxq, h->rxlen + 1024 );
223	st = read( h->fd, h->rxq + h->rxlen, 1024 );
224	h->rxlen += st;
225
226	if( st <= 0 )
227	return( -1 );
228
229	while( st )
230	{
231	int i;
232
233	if( h->msglen == 0 )
234	{
235	for( i = 0; i < h->rxlen; i ++ )
236	{
237	if( h->rxq[i] == '\r' \|\| h->rxq[i] == '\n' )
238	{
239	char cmd_text, *cmd;
240	int count;
241
242	cmd_text = g_strndup( h->rxq, i );
243	cmd = msn_linesplit( cmd_text );
244	for( count = 0; cmd[count]; count ++ );
245	st = h->exec_command( h->data, cmd, count );
246	g_free( cmd_text );
247
248	/* If the connection broke, don't continue. We don't even exist anymore. */
249	if( !st )
250	return( 0 );
251
252	if( h->msglen )
253	h->cmd_text = g_strndup( h->rxq, i );
254
255	/* Skip to the next non-emptyline */
256	while( i < h->rxlen && ( h->rxq[i] == '\r' \|\| h->rxq[i] == '\n' ) ) i ++;
257
258	break;
259	}
260	}
261
262	/* If we reached the end of the buffer, there's still an incomplete command there.
263	Return and wait for more data. */
264	if( i == h->rxlen && h->rxq[i-1] != '\r' && h->rxq[i-1] != '\n' )
265	break;
266	}
267	else
268	{
269	char msg, *cmd;
270	int count;
271
272	/* Do we have the complete message already? */
273	if( h->msglen > h->rxlen )
274	break;
275
276	msg = g_strndup( h->rxq, h->msglen );
277	cmd = msn_linesplit( h->cmd_text );
278	for( count = 0; cmd[count]; count ++ );
279
280	st = h->exec_message( h->data, msg, h->msglen, cmd, count );
281	g_free( msg );
282	g_free( h->cmd_text );
283	h->cmd_text = NULL;
284
285	if( !st )
286	return( 0 );
287
288	i = h->msglen;
289	h->msglen = 0;
290	}
291
292	/* More data after this block? */
293	if( i < h->rxlen )
294	{
295	char *tmp;
296
297	tmp = g_memdup( h->rxq + i, h->rxlen - i );
298	g_free( h->rxq );
299	h->rxq = tmp;
300	h->rxlen -= i;
301	i = 0;
302	}
303	else
304	/* If not, reset the rx queue and get lost. */
305	{
306	g_free( h->rxq );
307	h->rxq = g_new0( char, 1 );
308	h->rxlen = 0;
309	return( 1 );
310	}
311	}
312
313	return( 1 );
314	}
315
316	/* The difference between this function and the normal http_encode() function
317	is that this one escapes every 7-bit ASCII character because this is said
318	to avoid some lame server-side checks when setting a real-name. Also,
319	non-ASCII characters are not escaped because MSN servers don't seem to
320	appreciate that! */
321	char msn_http_encode( const char input )
322	{
323	char ret, s;
324	int i;
325
326	ret = s = g_new0( char, strlen( input ) * 3 + 1 );
327	for( i = 0; input[i]; i ++ )
328	if( input[i] & 128 )
329	{
330	*s = input[i];
331	s ++;
332	}
333	else
334	{
335	g_snprintf( s, 4, "%%%02X", input[i] );
336	s += 3;
337	}
338
339	return ret;
340	}
341
342	void msn_msgq_purge( struct im_connection ic, GSList *list )
343	{
344	struct msn_message *m;
345	GString *ret;
346	GSList *l;
347
348	l = *list;
349	if( l == NULL )
350	return;
351
352	m = l->data;
353	ret = g_string_sized_new( 1024 );
354	g_string_printf( ret, "Warning: Cleaning up MSN (switchboard) connection with unsent "
355	"messages to %s:", m->who ? m->who : "unknown recipient" );
356
357	while( l )
358	{
359	m = l->data;
360
361	g_string_append_printf( ret, "\n%s", m->text );
362
363	g_free( m->who );
364	g_free( m->text );
365	g_free( m );
366
367	l = l->next;
368	}
369	g_slist_free( *list );
370	*list = NULL;
371
372	imcb_log( ic, ret->str );
373	g_string_free( ret, TRUE );
374	}

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