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source: storage_text.c @ 7cad7b4

Last change on this file since 7cad7b4 was 7cad7b4, checked in by Jelmer Vernooij <jelmer@…>, at 2005-12-08T16:00:08Z
Clearer seperation between crypting and generic password code
Property mode set to `100644`
File size: 8.4 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	/* Storage backend that uses the same file format as <=1.0 */
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	#define BITLBEE_CORE
27	#include "bitlbee.h"
28	#include "crypting.h"
29
30	static void text_init (void)
31	{
32	if( access( global.conf->configdir, F_OK ) != 0 )
33	log_message( LOGLVL_WARNING, "The configuration directory %s does not exist. Configuration won't be saved.", CONFIG );
34	else if( access( global.conf->configdir, R_OK ) != 0 \|\| access( global.conf->configdir, W_OK ) != 0 )
35	log_message( LOGLVL_WARNING, "Permission problem: Can't read/write from/to %s.", global.conf->configdir );
36	}
37
38	static storage_status_t text_load ( const char my_nick, const char password, irc_t *irc )
39	{
40	char s[512];
41	char *line;
42	int proto;
43	char nick[MAX_NICK_LENGTH+1];
44	FILE *fp;
45	user_t *ru = user_find( irc, ROOT_NICK );
46
47	if( irc->status == USTATUS_IDENTIFIED )
48	return( 1 );
49
50	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".accounts" );
51	fp = fopen( s, "r" );
52	if( !fp ) return STORAGE_NO_SUCH_USER;
53
54	fscanf( fp, "%32[^\n]s", s );
55
56	if (checkpass (password, s) != 0)
57	{
58	fclose( fp );
59	return STORAGE_INVALID_PASSWORD;
60	}
61
62	/* Do this now. If the user runs with AuthMode = Registered, the
63	account command will not work otherwise. */
64	irc->status = USTATUS_IDENTIFIED;
65
66	while( fscanf( fp, "%511[^\n]s", s ) > 0 )
67	{
68	fgetc( fp );
69	line = deobfucrypt( irc, s );
70	root_command_string( irc, ru, line, 0 );
71	g_free( line );
72	}
73	fclose( fp );
74
75	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".nicks" );
76	fp = fopen( s, "r" );
77	if( !fp ) return STORAGE_NO_SUCH_USER;
78	while( fscanf( fp, "%s %d %s", s, &proto, nick ) > 0 )
79	{
80	http_decode( s );
81	nick_set( irc, s, proto, nick );
82	}
83	fclose( fp );
84
85	if( set_getint( irc, "auto_connect" ) )
86	{
87	strcpy( s, "account on" ); /* Can't do this directly because r_c_s alters the string */
88	root_command_string( irc, ru, s, 0 );
89	}
90
91	return STORAGE_OK;
92	}
93
94	static storage_status_t text_save( irc_t *irc, int overwrite )
95	{
96	char s[512];
97	char path[512], new_path[512];
98	char *line;
99	nick_t *n;
100	set_t *set;
101	mode_t ou = umask( 0077 );
102	account_t *a;
103	FILE *fp;
104	char *hash;
105
106	if (!overwrite) {
107	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" );
108	if (access( path, F_OK ) != -1)
109	return STORAGE_ALREADY_EXISTS;
110
111	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" );
112	if (access( path, F_OK ) != -1)
113	return STORAGE_ALREADY_EXISTS;
114	}
115
116	/*\
117	* [SH] Nothing should be saved if no password is set, because the
118	* password is not set if it was wrong, or if one is not identified
119	* yet. This means that a malicious user could easily overwrite
120	* files owned by someone else:
121	* a Bad Thing, methinks
122	\*/
123
124	/* [WVG] No? Really? */
125
126	/*\
127	* [SH] Okay, okay, it wasn't really Wilmer who said that, it was
128	* me. I just thought it was funny.
129	\*/
130
131	hash = hashpass( irc );
132	if( hash == NULL )
133	{
134	irc_usermsg( irc, "Please register yourself if you want to save your settings." );
135	return( 0 );
136	}
137
138	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks~" );
139	fp = fopen( path, "w" );
140	if( !fp ) return STORAGE_OTHER_ERROR;
141	for( n = irc->nicks; n; n = n->next )
142	{
143	strcpy( s, n->handle );
144	s[169] = 0; /* Prevent any overflow (169 ~ 512 / 3) */
145	http_encode( s );
146	g_snprintf( s + strlen( s ), 510 - strlen( s ), " %d %s", n->proto, n->nick );
147	if( fprintf( fp, "%s\n", s ) != strlen( s ) + 1 )
148	{
149	irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
150	fclose( fp );
151	return STORAGE_OTHER_ERROR;
152	}
153	}
154	if( fclose( fp ) != 0 )
155	{
156	irc_usermsg( irc, "fclose() reported an error. Disk full?" );
157	return STORAGE_OTHER_ERROR;
158	}
159
160	g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" );
161	if( unlink( new_path ) != 0 )
162	{
163	if( errno != ENOENT )
164	{
165	irc_usermsg( irc, "Error while removing old .nicks file" );
166	return STORAGE_OTHER_ERROR;
167	}
168	}
169	if( rename( path, new_path ) != 0 )
170	{
171	irc_usermsg( irc, "Error while renaming new .nicks file" );
172	return STORAGE_OTHER_ERROR;
173	}
174
175	g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts~" );
176	fp = fopen( path, "w" );
177	if( !fp ) return STORAGE_OTHER_ERROR;
178	if( fprintf( fp, "%s", hash ) != strlen( hash ) )
179	{
180	irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
181	fclose( fp );
182	return STORAGE_OTHER_ERROR;
183	}
184	g_free( hash );
185
186	for( a = irc->accounts; a; a = a->next )
187	{
188	if( a->protocol == PROTO_OSCAR \|\| a->protocol == PROTO_ICQ \|\| a->protocol == PROTO_TOC )
189	g_snprintf( s, sizeof( s ), "account add oscar \"%s\" \"%s\" %s", a->user, a->pass, a->server );
190	else
191	g_snprintf( s, sizeof( s ), "account add %s \"%s\" \"%s\" \"%s\"",
192	proto_name[a->protocol], a->user, a->pass, a->server ? a->server : "" );
193
194	line = obfucrypt( irc, s );
195	if( *line )
196	{
197	if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
198	{
199	irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
200	fclose( fp );
201	return STORAGE_OTHER_ERROR;
202	}
203	}
204	g_free( line );
205	}
206
207	for( set = irc->set; set; set = set->next )
208	{
209	if( set->value && set->def )
210	{
211	g_snprintf( s, sizeof( s ), "set %s \"%s\"", set->key, set->value );
212	line = obfucrypt( irc, s );
213	if( *line )
214	{
215	if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
216	{
217	irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
218	fclose( fp );
219	return STORAGE_OTHER_ERROR;
220	}
221	}
222	g_free( line );
223	}
224	}
225
226	if( strcmp( irc->mynick, ROOT_NICK ) != 0 )
227	{
228	g_snprintf( s, sizeof( s ), "rename %s %s", ROOT_NICK, irc->mynick );
229	line = obfucrypt( irc, s );
230	if( *line )
231	{
232	if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 )
233	{
234	irc_usermsg( irc, "fprintf() wrote too little. Disk full?" );
235	fclose( fp );
236	return STORAGE_OTHER_ERROR;
237	}
238	}
239	g_free( line );
240	}
241	if( fclose( fp ) != 0 )
242	{
243	irc_usermsg( irc, "fclose() reported an error. Disk full?" );
244	return STORAGE_OTHER_ERROR;
245	}
246
247	g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" );
248	if( unlink( new_path ) != 0 )
249	{
250	if( errno != ENOENT )
251	{
252	irc_usermsg( irc, "Error while removing old .accounts file" );
253	return STORAGE_OTHER_ERROR;
254	}
255	}
256	if( rename( path, new_path ) != 0 )
257	{
258	irc_usermsg( irc, "Error while renaming new .accounts file" );
259	return STORAGE_OTHER_ERROR;
260	}
261
262	umask( ou );
263
264	return STORAGE_OK;
265	}
266
267	static storage_status_t text_check_pass( const char nick, const char password )
268	{
269	char s[512];
270	FILE *fp;
271
272	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" );
273	fp = fopen( s, "r" );
274	if (!fp)
275	return STORAGE_NO_SUCH_USER;
276
277	fscanf( fp, "%32[^\n]s", s );
278	fclose( fp );
279
280	if (checkpass( password, s) == -1)
281	return STORAGE_INVALID_PASSWORD;
282
283	return STORAGE_OK;
284	}
285
286	static storage_status_t text_remove( const char nick, const char password )
287	{
288	char s[512];
289	storage_status_t status;
290
291	status = text_check_pass( nick, password );
292	if (status != STORAGE_OK)
293	return status;
294
295	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" );
296	if (unlink( s ) == -1)
297	return STORAGE_OTHER_ERROR;
298
299	g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" );
300	if (unlink( s ) == -1)
301	return STORAGE_OTHER_ERROR;
302
303	return STORAGE_OK;
304	}
305
306	storage_t storage_text = {
307	.name = "text",
308	.init = text_init,
309	.check_pass = text_check_pass,
310	.remove = text_remove,
311	.load = text_load,
312	.save = text_save
313	};

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