summaryrefslogtreecommitdiff
path: root/lib/libalpm/alpm.c
blob: 41b604adc7026ea5ac9578145d8a4a77552dc4ed (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
/*
 *  alpm.c
 * 
 *  Copyright (c) 2002 by Judd Vinet <jvinet@zeroflux.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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
 *  USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <syslog.h>
#include <limits.h> /* PATH_MAX */
#include <stdarg.h>
/* pacman */
#include "log.h"
#include "error.h"
#include "rpmvercmp.h"
#include "md5.h"
#include "list.h"
#include "package.h"
#include "group.h"
#include "util.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "backup.h"
#include "add.h"
#include "remove.h"
#include "sync.h"
#include "handle.h"
#include "alpm.h"

/* Globals */
pmhandle_t *handle = NULL;
enum __pmerrno_t pm_errno;

/*
 * Library
 */

int alpm_initialize(char *root)
{
	char str[PATH_MAX];

	ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1));

	handle = handle_new();

	/* lock db */
	if(handle->access == PM_ACCESS_RW) {
		if(_alpm_lckmk(PM_LOCK) == -1) {
			FREE(handle);
			RET_ERR(PM_ERR_HANDLE_LOCK, -1);
		}
	}

	strncpy(str, (root) ? root : PM_ROOT, PATH_MAX);
	/* add a trailing '/' if there isn't one */
	if(str[strlen(str)-1] != '/') {
		strcat(str, "/");
	}
	handle->root = strdup(str);

	return(0);
}

int alpm_release()
{
	PMList *i;

	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	/* unlock db */
	if(handle->access == PM_ACCESS_RW) {
		if(_alpm_lckrm(PM_LOCK)) {
			_alpm_log(PM_LOG_WARNING, "could not remove lock file %s", PM_LOCK);
			alpm_logaction("warning: could not remove lock file %s", PM_LOCK);
		}
	}

	/* close local database */
	if(handle->db_local) {
		db_close(handle->db_local);
		handle->db_local = NULL;
	}
	/* and also sync ones */
	for(i = handle->dbs_sync; i; i = i->next) {
		if(i->data) {
			db_close(i->data);
			i->data = NULL;
		}
	}

	FREEHANDLE(handle);

	return(0);
}

/*
 * Options
 */

int alpm_set_option(unsigned char parm, unsigned long data)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	return(handle_set_option(handle, parm, data));
}

int alpm_get_option(unsigned char parm, long *data)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	return(handle_get_option(handle, parm, data));
}

/*
 * Databases
 */

int alpm_db_register(char *treename, PM_DB **db)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(treename != NULL && strlen(treename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
	ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	/* ORE
	check if the db if already registered */

	*db = db_open(handle->root, handle->dbpath, treename);
	if(*db == NULL) {
		/* couldn't open the db directory - try creating it */
		if(db_create(handle->root, handle->dbpath, treename) == -1) {
			RET_ERR(PM_ERR_DB_CREATE, -1);
		}
		*db = db_open(handle->root, handle->dbpath, treename);
		if(*db == NULL) {
			/* couldn't open the db directory, try creating it */
			RET_ERR(PM_ERR_DB_OPEN, -1);
		}
	}

	if(strcmp(treename, "local") == 0) {
		handle->db_local = *db;
	} else {
		handle->dbs_sync = pm_list_add(handle->dbs_sync, *db);
	}

	return(0);
}

int alpm_db_unregister(PM_DB *db)
{
	PMList *i;
	int found = 0;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	if(db == handle->db_local) {
		db_close(handle->db_local);
		handle->db_local = NULL;
		found = 1;
	} else {
		for(i = handle->dbs_sync; i && !found; i = i->next) {
			if(db == i->data) {
				db_close(i->data);
				i->data = NULL;
				/* ORE
				it should be _alpm_list_removed instead */
				found = 1;
			}
		}
	}

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

	return(0);
}

int alpm_db_getlastupdate(PM_DB *db, char *ts)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1));
	ASSERT(ts != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	if(!pm_list_is_ptrin(handle->dbs_sync, db)) {
		RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
	}

	return(db_getlastupdate(db, ts));
}

int alpm_db_update(PM_DB *db, char *archive, char *ts)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	if(!pm_list_is_ptrin(handle->dbs_sync, db)) {
		RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
	}

	if(ts && strlen(ts) != 0) {
		char lastupdate[15];
		if(db_getlastupdate(db, lastupdate) != -1) {
			if(strcmp(ts, lastupdate) == 0) {
				RET_ERR(PM_ERR_DB_UPTODATE, -1);
			}
		}
	}

	/* ORE
	stat() the archive to check it exists */

	/* Cache needs to be rebuild */
	db_free_pkgcache(db);

	/* remove the old dir */
	_alpm_log(PM_LOG_FLOW2, "removing %s (if it exists)\n", db->path);
	/* ORE
	We should db_remove each db entry, and not rmrf the top directory */
	_alpm_rmrf(db->path);

	/* make the new dir */
	if(db_create(handle->root, handle->dbpath, db->treename) != 0) {
		RET_ERR(PM_ERR_DB_CREATE, -1);
	}

	/* uncompress the sync database */
	/* ORE
	we should not simply unpack the archive, but better parse it and 
	db_write each entry */
	_alpm_log(PM_LOG_FLOW2, "unpacking %s...\n", archive);
	if(_alpm_unpack(archive, db->path, NULL)) {
		RET_ERR(PM_ERR_XXX, -1);
	}

	if(ts && strlen(ts) != 0) {
		if(db_setlastupdate(db, ts) == -1) {
			RET_ERR(PM_ERR_XXX, -1);
		}
	}

	return(0);
}

PM_PKG *alpm_db_readpkg(PM_DB *db, char *name)
{
	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));
	ASSERT(db != NULL, return(NULL));
	ASSERT(name != NULL && strlen(name) != 0, return(NULL));

	return(db_get_pkgfromcache(db, name));
}

PM_LIST *alpm_db_getpkgcache(PM_DB *db)
{
	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));
	ASSERT(db != NULL, return(NULL));

	return(db_get_pkgcache(db));
}

PM_GRP *alpm_db_readgrp(PM_DB *db, char *name)
{
	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));
	ASSERT(db != NULL, return(NULL));
	ASSERT(name != NULL && strlen(name) != 0, return(NULL));

	return(db_get_grpfromcache(db, name));
}

PM_LIST *alpm_db_getgrpcache(PM_DB *db)
{
	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));
	ASSERT(db != NULL, return(NULL));

	return(db_get_grpcache(db));
}

/*
 * Packages
 */

void *alpm_pkg_getinfo(PM_PKG *pkg, unsigned char parm)
{
	void *data;

	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));
	ASSERT(pkg != NULL, return(NULL));

	/* Update the cache package entry if needed */
	if(pkg->origin == PKG_FROM_CACHE && pkg->data == handle->db_local) {
		switch(parm) {
			case PM_PKG_FILES:
			case PM_PKG_BACKUP:
				if(!(pkg->infolevel & INFRQ_FILES)) {
					char target[PKG_NAME_LEN+PKG_VERSION_LEN];

					snprintf(target, PKG_NAME_LEN+PKG_VERSION_LEN, "%s-%s", pkg->name, pkg->version);
					db_read(pkg->data, target, INFRQ_FILES, pkg);
				}
			break;

			case PM_PKG_SCRIPLET:
				if(!(pkg->infolevel & INFRQ_SCRIPLET)) {
					char target[PKG_NAME_LEN+PKG_VERSION_LEN];

					snprintf(target, PKG_NAME_LEN+PKG_VERSION_LEN, "%s-%s", pkg->name, pkg->version);
					db_read(pkg->data, target, INFRQ_SCRIPLET, pkg);
				}
			break;
		}
	}

	switch(parm) {
		case PM_PKG_NAME:        data = pkg->name; break;
		case PM_PKG_VERSION:     data = pkg->version; break;
		case PM_PKG_DESC:        data = pkg->desc; break;
		case PM_PKG_GROUPS:      data = pkg->groups; break;
		case PM_PKG_URL:         data = pkg->url; break;
		case PM_PKG_LICENSE:     data = pkg->license; break;
		case PM_PKG_ARCH:        data = pkg->arch; break;
		case PM_PKG_BUILDDATE:   data = pkg->builddate; break;
		case PM_PKG_INSTALLDATE: data = pkg->installdate; break;
		case PM_PKG_PACKAGER:    data = pkg->packager; break;
		case PM_PKG_SIZE:        data = (void *)pkg->size; break;
		case PM_PKG_REASON:      data = (void *)(int)pkg->reason; break;
		case PM_PKG_REPLACES:    data = pkg->replaces; break;
		case PM_PKG_MD5SUM:      data = pkg->md5sum; break;
		case PM_PKG_DEPENDS:     data = pkg->depends; break;
		case PM_PKG_REQUIREDBY:  data = pkg->requiredby; break;
		case PM_PKG_PROVIDES:    data = pkg->provides; break;
		case PM_PKG_CONFLICTS:   data = pkg->conflicts; break;
		case PM_PKG_FILES:       data = pkg->files; break;
		case PM_PKG_BACKUP:      data = pkg->backup; break;
		case PM_PKG_SCRIPLET:    data = (void *)(int)pkg->scriptlet; break;
		default:
			data = NULL;
		break;
	}

	return(data);
}

int alpm_pkg_load(char *filename, PM_PKG **pkg)
{
	/* Sanity checks */
	ASSERT(filename != NULL && strlen(filename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
	ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	*pkg = pkg_load(filename);
	if(*pkg == NULL) {
		/* pm_errno is set by pkg_load */
		return(-1);
	}

	return(0);
}

int alpm_pkg_free(PM_PKG *pkg)
{
	/* Sanity checks */
	ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	pkg_free(pkg);

	return(0);
}

int alpm_pkg_vercmp(const char *ver1, const char *ver2)
{
	return(rpmvercmp(ver1, ver2));
}

/*
 * Groups
 */

void *alpm_grp_getinfo(PM_GRP *grp, unsigned char parm)
{
	void *data;

	/* Sanity checks */
	ASSERT(grp != NULL, return(NULL));

	switch(parm) {
		case PM_GRP_NAME:     data = grp->name; break;
		case PM_GRP_PKGNAMES: data = grp->packages; break;
		default:
			data = NULL;
		break;
	}

	return(data);
}

/*
 * Sync operations
 */

void *alpm_sync_getinfo(PM_SYNC *sync, unsigned char parm)
{
	void *data;

	/* Sanity checks */
	ASSERT(sync != NULL, return(NULL));

	switch(parm) {
		case PM_SYNC_TYPE:     data = (void *)(int)sync->type; break;
		case PM_SYNC_LOCALPKG: data = sync->lpkg; break;
		case PM_SYNC_SYNCPKG:  data = sync->spkg; break;
		default:
			data = NULL;
		break;
	}

	return(data);
}

int alpm_sync_sysupgrade(PM_LIST **data)
{
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	return(sync_sysupgrade(data));
}

/*
 * Transactions
 */

void *alpm_trans_getinfo(unsigned char parm)
{
	pmtrans_t *trans;
	void *data;

	/* Sanity checks */
	ASSERT(handle != NULL, return(NULL));

	trans = handle->trans;

	switch(parm) {
		case PM_TRANS_TYPE:    data = (void *)(int)trans->type; break;
		case PM_TRANS_FLAGS:   data = (void *)(int)trans->flags; break;
		case PM_TRANS_TARGETS: data = trans->targets; break;
		default:
			data = NULL;
		break;
	}

	return(data);
}

int alpm_trans_init(unsigned char type, unsigned char flags, alpm_trans_cb cb)
{
	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));

	handle->trans = trans_new();
	if(handle->trans == NULL) {
		RET_ERR(PM_ERR_MEMORY, -1);
	}

	return(trans_init(handle->trans, type, flags, cb));
}

int alpm_trans_addtarget(char *target)
{
	pmtrans_t *trans;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(target != NULL && strlen(target) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	trans = handle->trans;
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));

	return(trans_addtarget(trans, target));
}

int alpm_trans_prepare(PMList **data)
{
	pmtrans_t *trans;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
	ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	trans = handle->trans;
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));

	return(trans_prepare(handle->trans, data));
}

int alpm_trans_commit()
{
	pmtrans_t *trans;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	trans = handle->trans;
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(trans->state == STATE_PREPARED, RET_ERR(PM_ERR_TRANS_NOT_PREPARED, -1));

	/* ORE
	ASSERT(handle->access != PM_ACCESS_RW, RET_ERR(PM_ERR_BAD_PERMS, -1));*/

	return(trans_commit(handle->trans));
}

int alpm_trans_release()
{
	pmtrans_t *trans;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	trans = handle->trans;
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(trans->state != STATE_IDLE, RET_ERR(PM_ERR_TRANS_NULL, -1));

	FREETRANS(handle->trans);

	return(0);
}

/*
 * Log facilities
 */

int alpm_logaction(char *fmt, ...)
{
	char str[LOG_STR_LEN];
	va_list args;

	/* Sanity checks */
	ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

	va_start(args, fmt);
	vsnprintf(str, LOG_STR_LEN, fmt, args);
	va_end(args);

	/* ORE
	We should add a prefix to log strings depending on who called us.
	If logaction was called by the frontend:
		USER: <the frontend log>
	and if called internally:
		ALPM: <the library log>
	Moreover, the frontend should be able to choose its prefix (USER by default?):
		pacman: "PACMAN"
		kpacman: "KPACMAN"
		...
	It allows to share the log file between several frontends and to actually 
	know who does what */

	return(_alpm_log_action(handle->usesyslog, handle->logfd, str));
}

/*
 * Lists wrappers
 */

PM_LIST *alpm_list_first(PM_LIST *list)
{
	ASSERT(list != NULL, return(NULL));

	return(list);
}

PM_LIST *alpm_list_next(PM_LIST *entry)
{
	ASSERT(entry != NULL, return(NULL));

	return(entry->next);
}

void *alpm_list_getdata(PM_LIST *entry)
{
	ASSERT(entry != NULL, return(NULL));

	return(entry->data);
}

int alpm_list_free(PM_LIST *entry)
{
	if(entry) {
		/* ORE
		does not free all memory for packages... */
		pm_list_free(entry);
	}

	return(0);
}

/*
 * Misc wrappers
 */

char *alpm_get_md5sum(char *name)
{
	ASSERT(name != NULL, return(NULL));

	return(MDFile(name));
}

/* vim: set ts=2 sw=2 noet: */