summaryrefslogtreecommitdiffstats
path: root/lib/libalpm/db.c
blob: f70f83c18a7aebd399f977cae5a3a17dca84f4c7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
/*
 *  db.c
 *
 *  Copyright (c) 2006-2016 Pacman Development Team <pacman-dev@archlinux.org>
 *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
 *  Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
 *  Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
 *  Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org>
 *  Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
 *
 *  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, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <regex.h>

/* libalpm */
#include "db.h"
#include "alpm_list.h"
#include "log.h"
#include "util.h"
#include "handle.h"
#include "alpm.h"
#include "package.h"
#include "group.h"

/** \addtogroup alpm_databases Database Functions
 * @brief Functions to query and manipulate the database of libalpm
 * @{
 */

/** Register a sync database of packages. */
alpm_db_t SYMEXPORT *alpm_register_syncdb(alpm_handle_t *handle,
		const char *treename, alpm_siglevel_t level)
{
	alpm_list_t *i;

	/* Sanity checks */
	CHECK_HANDLE(handle, return NULL);
	ASSERT(treename != NULL && strlen(treename) != 0,
			RET_ERR(handle, ALPM_ERR_WRONG_ARGS, NULL));
	ASSERT(!strchr(treename, '/'), RET_ERR(handle, ALPM_ERR_WRONG_ARGS, NULL));
	/* Do not register a database if a transaction is on-going */
	ASSERT(handle->trans == NULL, RET_ERR(handle, ALPM_ERR_TRANS_NOT_NULL, NULL));

	/* ensure database name is unique */
	if(strcmp(treename, "local") == 0) {
		RET_ERR(handle, ALPM_ERR_DB_NOT_NULL, NULL);
	}
	for(i = handle->dbs_sync; i; i = i->next) {
		alpm_db_t *d = i->data;
		if(strcmp(treename, d->treename) == 0) {
			RET_ERR(handle, ALPM_ERR_DB_NOT_NULL, NULL);
		}
	}

	return _alpm_db_register_sync(handle, treename, level);
}

/* Helper function for alpm_db_unregister{_all} */
void _alpm_db_unregister(alpm_db_t *db)
{
	if(db == NULL) {
		return;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG, "unregistering database '%s'\n", db->treename);
	_alpm_db_free(db);
}

/** Unregister all package databases. */
int SYMEXPORT alpm_unregister_all_syncdbs(alpm_handle_t *handle)
{
	alpm_list_t *i;
	alpm_db_t *db;

	/* Sanity checks */
	CHECK_HANDLE(handle, return -1);
	/* Do not unregister a database if a transaction is on-going */
	ASSERT(handle->trans == NULL, RET_ERR(handle, ALPM_ERR_TRANS_NOT_NULL, -1));

	/* unregister all sync dbs */
	for(i = handle->dbs_sync; i; i = i->next) {
		db = i->data;
		db->ops->unregister(db);
		i->data = NULL;
	}
	FREELIST(handle->dbs_sync);
	return 0;
}

/** Unregister a package database. */
int SYMEXPORT alpm_db_unregister(alpm_db_t *db)
{
	int found = 0;
	alpm_handle_t *handle;

	/* Sanity checks */
	ASSERT(db != NULL, return -1);
	/* Do not unregister a database if a transaction is on-going */
	handle = db->handle;
	handle->pm_errno = 0;
	ASSERT(handle->trans == NULL, RET_ERR(handle, ALPM_ERR_TRANS_NOT_NULL, -1));

	if(db == handle->db_local) {
		handle->db_local = NULL;
		found = 1;
	} else {
		/* Warning : this function shouldn't be used to unregister all sync
		 * databases by walking through the list returned by
		 * alpm_get_syncdbs, because the db is removed from that list here.
		 */
		void *data;
		handle->dbs_sync = alpm_list_remove(handle->dbs_sync,
				db, _alpm_db_cmp, &data);
		if(data) {
			found = 1;
		}
	}

	if(!found) {
		RET_ERR(handle, ALPM_ERR_DB_NOT_FOUND, -1);
	}

	db->ops->unregister(db);
	return 0;
}

/** Get the serverlist of a database. */
alpm_list_t SYMEXPORT *alpm_db_get_servers(const alpm_db_t *db)
{
	ASSERT(db != NULL, return NULL);
	return db->servers;
}

/** Set the serverlist of a database. */
int SYMEXPORT alpm_db_set_servers(alpm_db_t *db, alpm_list_t *servers)
{
	ASSERT(db != NULL, return -1);
	FREELIST(db->servers);
	db->servers = servers;
	return 0;
}

static char *sanitize_url(const char *url)
{
	char *newurl;
	size_t len = strlen(url);

	STRDUP(newurl, url, return NULL);
	/* strip the trailing slash if one exists */
	if(newurl[len - 1] == '/') {
		newurl[len - 1] = '\0';
	}
	return newurl;
}

/** Add a download server to a database.
 * @param db database pointer
 * @param url url of the server
 * @return 0 on success, -1 on error (pm_errno is set accordingly)
 */
int SYMEXPORT alpm_db_add_server(alpm_db_t *db, const char *url)
{
	char *newurl;

	/* Sanity checks */
	ASSERT(db != NULL, return -1);
	db->handle->pm_errno = 0;
	ASSERT(url != NULL && strlen(url) != 0, RET_ERR(db->handle, ALPM_ERR_WRONG_ARGS, -1));

	newurl = sanitize_url(url);
	if(!newurl) {
		return -1;
	}
	db->servers = alpm_list_add(db->servers, newurl);
	_alpm_log(db->handle, ALPM_LOG_DEBUG, "adding new server URL to database '%s': %s\n",
			db->treename, newurl);

	return 0;
}

/** Remove a download server from a database.
 * @param db database pointer
 * @param url url of the server
 * @return 0 on success, 1 on server not present,
 * -1 on error (pm_errno is set accordingly)
 */
int SYMEXPORT alpm_db_remove_server(alpm_db_t *db, const char *url)
{
	char *newurl, *vdata = NULL;
	int ret = 1;

	/* Sanity checks */
	ASSERT(db != NULL, return -1);
	db->handle->pm_errno = 0;
	ASSERT(url != NULL && strlen(url) != 0, RET_ERR(db->handle, ALPM_ERR_WRONG_ARGS, -1));

	newurl = sanitize_url(url);
	if(!newurl) {
		return -1;
	}

	db->servers = alpm_list_remove_str(db->servers, newurl, &vdata);

	if(vdata) {
		_alpm_log(db->handle, ALPM_LOG_DEBUG, "removed server URL from database '%s': %s\n",
				db->treename, newurl);
		free(vdata);
		ret = 0;
	}

	free(newurl);
	return ret;
}

/** Get the name of a package database. */
const char SYMEXPORT *alpm_db_get_name(const alpm_db_t *db)
{
	ASSERT(db != NULL, return NULL);
	return db->treename;
}

/** Get the signature verification level for a database. */
alpm_siglevel_t SYMEXPORT alpm_db_get_siglevel(alpm_db_t *db)
{
	ASSERT(db != NULL, return -1);
	if(db->siglevel & ALPM_SIG_USE_DEFAULT) {
		return db->handle->siglevel;
	} else {
		return db->siglevel;
	}
}

/** Check the validity of a database. */
int SYMEXPORT alpm_db_get_valid(alpm_db_t *db)
{
	ASSERT(db != NULL, return -1);
	db->handle->pm_errno = 0;
	return db->ops->validate(db);
}

/** Get a package entry from a package database. */
alpm_pkg_t SYMEXPORT *alpm_db_get_pkg(alpm_db_t *db, const char *name)
{
	alpm_pkg_t *pkg;
	ASSERT(db != NULL, return NULL);
	db->handle->pm_errno = 0;
	ASSERT(name != NULL && strlen(name) != 0,
			RET_ERR(db->handle, ALPM_ERR_WRONG_ARGS, NULL));

	pkg = _alpm_db_get_pkgfromcache(db, name);
	if(!pkg) {
		RET_ERR(db->handle, ALPM_ERR_PKG_NOT_FOUND, NULL);
	}
	return pkg;
}

/** Get the package cache of a package database. */
alpm_list_t SYMEXPORT *alpm_db_get_pkgcache(alpm_db_t *db)
{
	ASSERT(db != NULL, return NULL);
	db->handle->pm_errno = 0;
	return _alpm_db_get_pkgcache(db);
}

/** Get a group entry from a package database. */
alpm_group_t SYMEXPORT *alpm_db_get_group(alpm_db_t *db, const char *name)
{
	ASSERT(db != NULL, return NULL);
	db->handle->pm_errno = 0;
	ASSERT(name != NULL && strlen(name) != 0,
			RET_ERR(db->handle, ALPM_ERR_WRONG_ARGS, NULL));

	return _alpm_db_get_groupfromcache(db, name);
}

/** Get the group cache of a package database. */
alpm_list_t SYMEXPORT *alpm_db_get_groupcache(alpm_db_t *db)
{
	ASSERT(db != NULL, return NULL);
	db->handle->pm_errno = 0;

	return _alpm_db_get_groupcache(db);
}

/** Searches a database. */
alpm_list_t SYMEXPORT *alpm_db_search(alpm_db_t *db, const alpm_list_t *needles)
{
	ASSERT(db != NULL, return NULL);
	db->handle->pm_errno = 0;

	return _alpm_db_search(db, needles);
}

/** Sets the usage bitmask for a repo */
int SYMEXPORT alpm_db_set_usage(alpm_db_t *db, alpm_db_usage_t usage)
{
	ASSERT(db != NULL, return -1);
	db->usage = usage;
	return 0;
}

/** Gets the usage bitmask for a repo */
int SYMEXPORT alpm_db_get_usage(alpm_db_t *db, alpm_db_usage_t *usage)
{
	ASSERT(db != NULL, return -1);
	ASSERT(usage != NULL, return -1);
	*usage = db->usage;
	return 0;
}


/** @} */

alpm_db_t *_alpm_db_new(const char *treename, int is_local)
{
	alpm_db_t *db;

	CALLOC(db, 1, sizeof(alpm_db_t), return NULL);
	STRDUP(db->treename, treename, FREE(db); return NULL);
	if(is_local) {
		db->status |= DB_STATUS_LOCAL;
	} else {
		db->status &= ~DB_STATUS_LOCAL;
	}
	db->usage = ALPM_DB_USAGE_ALL;

	return db;
}

void _alpm_db_free(alpm_db_t *db)
{
	ASSERT(db != NULL, return);
	/* cleanup pkgcache */
	_alpm_db_free_pkgcache(db);
	/* cleanup server list */
	FREELIST(db->servers);
	FREE(db->_path);
	FREE(db->treename);
	FREE(db);

	return;
}

const char *_alpm_db_path(alpm_db_t *db)
{
	if(!db) {
		return NULL;
	}
	if(!db->_path) {
		const char *dbpath;
		size_t pathsize;

		dbpath = db->handle->dbpath;
		if(!dbpath) {
			_alpm_log(db->handle, ALPM_LOG_ERROR, _("database path is undefined\n"));
			RET_ERR(db->handle, ALPM_ERR_DB_OPEN, NULL);
		}

		if(db->status & DB_STATUS_LOCAL) {
			pathsize = strlen(dbpath) + strlen(db->treename) + 2;
			CALLOC(db->_path, 1, pathsize, RET_ERR(db->handle, ALPM_ERR_MEMORY, NULL));
			sprintf(db->_path, "%s%s/", dbpath, db->treename);
		} else {
			const char *dbext = db->handle->dbext;

			pathsize = strlen(dbpath) + 5 + strlen(db->treename) + strlen(dbext) + 1;
			CALLOC(db->_path, 1, pathsize, RET_ERR(db->handle, ALPM_ERR_MEMORY, NULL));
			/* all sync DBs now reside in the sync/ subdir of the dbpath */
			sprintf(db->_path, "%ssync/%s%s", dbpath, db->treename, dbext);
		}
		_alpm_log(db->handle, ALPM_LOG_DEBUG, "database path for tree %s set to %s\n",
				db->treename, db->_path);
	}
	return db->_path;
}

int _alpm_db_cmp(const void *d1, const void *d2)
{
	const alpm_db_t *db1 = d1;
	const alpm_db_t *db2 = d2;
	return strcmp(db1->treename, db2->treename);
}

alpm_list_t *_alpm_db_search(alpm_db_t *db, const alpm_list_t *needles)
{
	const alpm_list_t *i, *j, *k;
	alpm_list_t *ret = NULL;

	if(!(db->usage & ALPM_DB_USAGE_SEARCH)) {
		return NULL;
	}

	/* copy the pkgcache- we will free the list var after each needle */
	alpm_list_t *list = alpm_list_copy(_alpm_db_get_pkgcache(db));

	for(i = needles; i; i = i->next) {
		char *targ;
		regex_t reg;

		if(i->data == NULL) {
			continue;
		}
		ret = NULL;
		targ = i->data;
		_alpm_log(db->handle, ALPM_LOG_DEBUG, "searching for target '%s'\n", targ);

		if(regcomp(&reg, targ, REG_EXTENDED | REG_NOSUB | REG_ICASE | REG_NEWLINE) != 0) {
			RET_ERR(db->handle, ALPM_ERR_INVALID_REGEX, NULL);
		}

		for(j = list; j; j = j->next) {
			alpm_pkg_t *pkg = j->data;
			const char *matched = NULL;
			const char *name = pkg->name;
			const char *desc = alpm_pkg_get_desc(pkg);

			/* check name as regex AND as plain text */
			if(name && (regexec(&reg, name, 0, 0, 0) == 0 || strstr(name, targ))) {
				matched = name;
			}
			/* check desc */
			else if(desc && regexec(&reg, desc, 0, 0, 0) == 0) {
				matched = desc;
			}
			/* TODO: should we be doing this, and should we print something
			 * differently when we do match it since it isn't currently printed? */
			if(!matched) {
				/* check provides */
				for(k = alpm_pkg_get_provides(pkg); k; k = k->next) {
					alpm_depend_t *provide = k->data;
					if(regexec(&reg, provide->name, 0, 0, 0) == 0) {
						matched = provide->name;
						break;
					}
				}
			}
			if(!matched) {
				/* check groups */
				for(k = alpm_pkg_get_groups(pkg); k; k = k->next) {
					if(regexec(&reg, k->data, 0, 0, 0) == 0) {
						matched = k->data;
						break;
					}
				}
			}

			if(matched != NULL) {
				_alpm_log(db->handle, ALPM_LOG_DEBUG,
						"search target '%s' matched '%s' on package '%s'\n",
						targ, matched, name);
				ret = alpm_list_add(ret, pkg);
			}
		}

		/* Free the existing search list, and use the returned list for the
		 * next needle. This allows for AND-based package searching. */
		alpm_list_free(list);
		list = ret;
		regfree(&reg);
	}

	return ret;
}

/* Returns a new package cache from db.
 * It frees the cache if it already exists.
 */
static int load_pkgcache(alpm_db_t *db)
{
	_alpm_db_free_pkgcache(db);

	_alpm_log(db->handle, ALPM_LOG_DEBUG, "loading package cache for repository '%s'\n",
			db->treename);
	if(db->ops->populate(db) == -1) {
		_alpm_log(db->handle, ALPM_LOG_DEBUG,
				"failed to load package cache for repository '%s'\n", db->treename);
		return -1;
	}

	db->status |= DB_STATUS_PKGCACHE;
	return 0;
}

static void free_groupcache(alpm_db_t *db)
{
	alpm_list_t *lg;

	if(db == NULL || !(db->status & DB_STATUS_GRPCACHE)) {
		return;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG,
			"freeing group cache for repository '%s'\n", db->treename);

	for(lg = db->grpcache; lg; lg = lg->next) {
		_alpm_group_free(lg->data);
		lg->data = NULL;
	}
	FREELIST(db->grpcache);
	db->status &= ~DB_STATUS_GRPCACHE;
}

void _alpm_db_free_pkgcache(alpm_db_t *db)
{
	if(db == NULL || !(db->status & DB_STATUS_PKGCACHE)) {
		return;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG,
			"freeing package cache for repository '%s'\n", db->treename);

	if(db->pkgcache) {
		alpm_list_free_inner(db->pkgcache->list,
				(alpm_list_fn_free)_alpm_pkg_free);
		_alpm_pkghash_free(db->pkgcache);
	}
	db->status &= ~DB_STATUS_PKGCACHE;

	free_groupcache(db);
}

alpm_pkghash_t *_alpm_db_get_pkgcache_hash(alpm_db_t *db)
{
	if(db == NULL) {
		return NULL;
	}

	if(!(db->status & DB_STATUS_VALID)) {
		RET_ERR(db->handle, ALPM_ERR_DB_INVALID, NULL);
	}

	if(!(db->status & DB_STATUS_PKGCACHE)) {
		if(load_pkgcache(db)) {
			/* handle->error set in local/sync-db-populate */
			return NULL;
		}
	}

	return db->pkgcache;
}

alpm_list_t *_alpm_db_get_pkgcache(alpm_db_t *db)
{
	alpm_pkghash_t *hash = _alpm_db_get_pkgcache_hash(db);

	if(hash == NULL) {
		return NULL;
	}

	return hash->list;
}

/* "duplicate" pkg then add it to pkgcache */
int _alpm_db_add_pkgincache(alpm_db_t *db, alpm_pkg_t *pkg)
{
	alpm_pkg_t *newpkg = NULL;

	if(db == NULL || pkg == NULL || !(db->status & DB_STATUS_PKGCACHE)) {
		return -1;
	}

	if(_alpm_pkg_dup(pkg, &newpkg)) {
		/* we return memory on "non-fatal" error in _alpm_pkg_dup */
		_alpm_pkg_free(newpkg);
		return -1;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG, "adding entry '%s' in '%s' cache\n",
						newpkg->name, db->treename);
	if(newpkg->origin == ALPM_PKG_FROM_FILE) {
		free(newpkg->origin_data.file);
	}
	newpkg->origin = (db->status & DB_STATUS_LOCAL)
		? ALPM_PKG_FROM_LOCALDB
		: ALPM_PKG_FROM_SYNCDB;
	newpkg->origin_data.db = db;
	db->pkgcache = _alpm_pkghash_add_sorted(db->pkgcache, newpkg);

	free_groupcache(db);

	return 0;
}

int _alpm_db_remove_pkgfromcache(alpm_db_t *db, alpm_pkg_t *pkg)
{
	alpm_pkg_t *data = NULL;

	if(db == NULL || pkg == NULL || !(db->status & DB_STATUS_PKGCACHE)) {
		return -1;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG, "removing entry '%s' from '%s' cache\n",
						pkg->name, db->treename);

	db->pkgcache = _alpm_pkghash_remove(db->pkgcache, pkg, &data);
	if(data == NULL) {
		/* package not found */
		_alpm_log(db->handle, ALPM_LOG_DEBUG, "cannot remove entry '%s' from '%s' cache: not found\n",
							pkg->name, db->treename);
		return -1;
	}

	_alpm_pkg_free(data);

	free_groupcache(db);

	return 0;
}

alpm_pkg_t *_alpm_db_get_pkgfromcache(alpm_db_t *db, const char *target)
{
	if(db == NULL) {
		return NULL;
	}

	alpm_pkghash_t *pkgcache = _alpm_db_get_pkgcache_hash(db);
	if(!pkgcache) {
		return NULL;
	}

	return _alpm_pkghash_find(pkgcache, target);
}

/* Returns a new group cache from db.
 */
static int load_grpcache(alpm_db_t *db)
{
	alpm_list_t *lp;

	if(db == NULL) {
		return -1;
	}

	_alpm_log(db->handle, ALPM_LOG_DEBUG, "loading group cache for repository '%s'\n",
			db->treename);

	for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
		const alpm_list_t *i;
		alpm_pkg_t *pkg = lp->data;

		for(i = alpm_pkg_get_groups(pkg); i; i = i->next) {
			const char *grpname = i->data;
			alpm_list_t *j;
			alpm_group_t *grp = NULL;
			int found = 0;

			/* first look through the group cache for a group with this name */
			for(j = db->grpcache; j; j = j->next) {
				grp = j->data;

				if(strcmp(grp->name, grpname) == 0
						&& !alpm_list_find_ptr(grp->packages, pkg)) {
					grp->packages = alpm_list_add(grp->packages, pkg);
					found = 1;
					break;
				}
			}
			if(found) {
				continue;
			}
			/* we didn't find the group, so create a new one with this name */
			grp = _alpm_group_new(grpname);
			if(!grp) {
				free_groupcache(db);
				return -1;
			}
			grp->packages = alpm_list_add(grp->packages, pkg);
			db->grpcache = alpm_list_add(db->grpcache, grp);
		}
	}

	db->status |= DB_STATUS_GRPCACHE;
	return 0;
}

alpm_list_t *_alpm_db_get_groupcache(alpm_db_t *db)
{
	if(db == NULL) {
		return NULL;
	}

	if(!(db->status & DB_STATUS_VALID)) {
		RET_ERR(db->handle, ALPM_ERR_DB_INVALID, NULL);
	}

	if(!(db->status & DB_STATUS_GRPCACHE)) {
		load_grpcache(db);
	}

	return db->grpcache;
}

alpm_group_t *_alpm_db_get_groupfromcache(alpm_db_t *db, const char *target)
{
	alpm_list_t *i;

	if(db == NULL || target == NULL || strlen(target) == 0) {
		return NULL;
	}

	for(i = _alpm_db_get_groupcache(db); i; i = i->next) {
		alpm_group_t *info = i->data;

		if(strcmp(info->name, target) == 0) {
			return info;
		}
	}

	return NULL;
}

/* vim: set noet: */