database.c 53.5 KB
Newer Older
1 2 3
/* database.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
4
 * Copyright (C) 2008-2009 Timo Teräs <timo.teras@iki.fi>
5 6
 * All rights reserved.
 *
7
 * This program is free software; you can redistribute it and/or modify it
8 9 10 11 12 13 14
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
15
#include <limits.h>
16 17 18
#include <unistd.h>
#include <malloc.h>
#include <string.h>
19
#include <stdlib.h>
20
#include <signal.h>
21
#include <fnmatch.h>
22
#include <sys/file.h>
23 24 25 26 27

#include "apk_defines.h"
#include "apk_package.h"
#include "apk_database.h"
#include "apk_state.h"
28
#include "apk_applet.h"
29
#include "apk_archive.h"
30

31
const char * const apkindex_tar_gz = "APKINDEX.tar.gz";
Timo Teräs's avatar
Timo Teräs committed
32
const char * const apk_index_gz = "APK_INDEX.gz";
Timo Teräs's avatar
Timo Teräs committed
33 34 35
static const char * const apk_static_cache_dir = "var/lib/apk";
static const char * const apk_linked_cache_dir = "etc/apk/cache";

36 37 38
struct install_ctx {
	struct apk_database *db;
	struct apk_package *pkg;
39
	struct apk_installed_package *ipkg;
40 41

	int script;
42
	char **script_args;
43
	int script_pending : 1;
44

45
	struct apk_db_dir_instance *diri;
Timo Teräs's avatar
Timo Teräs committed
46
	struct apk_checksum data_csum;
47
	struct apk_sign_ctx sctx;
48
	struct apk_name_array *replaces;
49

50 51 52 53 54
	apk_progress_cb cb;
	void *cb_ctx;
	size_t installed_size;
	size_t current_file_size;

55 56
	struct hlist_node **diri_node;
	struct hlist_node **file_diri_node;
57 58
};

59
static apk_blob_t pkg_name_get_key(apk_hash_item item)
60
{
61
	return APK_BLOB_STR(((struct apk_name *) item)->name);
62 63
}

64 65 66
static void pkg_name_free(struct apk_name *name)
{
	free(name->name);
67 68 69 70
	if (name->pkgs)
		free(name->pkgs);
	if (name->rdepends)
		free(name->rdepends);
71 72 73
	free(name);
}

74 75 76
static const struct apk_hash_ops pkg_name_hash_ops = {
	.node_offset = offsetof(struct apk_name, hash_node),
	.get_key = pkg_name_get_key,
77 78
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
79
	.delete_item = (apk_hash_delete_f) pkg_name_free,
80 81
};

82
static apk_blob_t pkg_info_get_key(apk_hash_item item)
83
{
Timo Teräs's avatar
Timo Teräs committed
84
	return APK_BLOB_CSUM(((struct apk_package *) item)->csum);
85 86
}

87
static unsigned long csum_hash(apk_blob_t csum)
88
{
89 90
	/* Checksum's highest bits have the most "randomness", use that
	 * directly as hash */
91
	return *(unsigned long *) csum.ptr;
92 93 94 95 96
}

static const struct apk_hash_ops pkg_info_hash_ops = {
	.node_offset = offsetof(struct apk_package, hash_node),
	.get_key = pkg_info_get_key,
97 98
	.hash_key = csum_hash,
	.compare = apk_blob_compare,
99 100 101
	.delete_item = (apk_hash_delete_f) apk_pkg_free,
};

102
static apk_blob_t apk_db_dir_get_key(apk_hash_item item)
103
{
Timo Teräs's avatar
Timo Teräs committed
104 105
	struct apk_db_dir *dir = (struct apk_db_dir *) item;
	return APK_BLOB_PTR_LEN(dir->name, dir->namelen);
106 107 108 109 110
}

static const struct apk_hash_ops dir_hash_ops = {
	.node_offset = offsetof(struct apk_db_dir, hash_node),
	.get_key = apk_db_dir_get_key,
111 112
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
113 114 115
	.delete_item = (apk_hash_delete_f) free,
};

116 117 118 119 120 121
struct apk_db_file_hash_key {
	apk_blob_t dirname;
	apk_blob_t filename;
};

static unsigned long apk_db_file_hash_key(apk_blob_t _key)
122
{
123 124
	struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;

Timo Teräs's avatar
Timo Teräs committed
125
	return apk_blob_hash_seed(key->filename, apk_blob_hash(key->dirname));
126 127 128 129 130 131
}

static unsigned long apk_db_file_hash_item(apk_hash_item item)
{
	struct apk_db_file *dbf = (struct apk_db_file *) item;

Timo Teräs's avatar
Timo Teräs committed
132 133
	return apk_blob_hash_seed(APK_BLOB_PTR_LEN(dbf->name, dbf->namelen),
				  dbf->diri->dir->hash);
134 135 136 137 138 139
}

static int apk_db_file_compare_item(apk_hash_item item, apk_blob_t _key)
{
	struct apk_db_file *dbf = (struct apk_db_file *) item;
	struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;
Timo Teräs's avatar
Timo Teräs committed
140
	struct apk_db_dir *dir = dbf->diri->dir;
141 142
	int r;

Timo Teräs's avatar
Timo Teräs committed
143 144
	r = apk_blob_compare(key->filename,
			     APK_BLOB_PTR_LEN(dbf->name, dbf->namelen));
145 146 147
	if (r != 0)
		return r;

Timo Teräs's avatar
Timo Teräs committed
148 149 150
	r = apk_blob_compare(key->dirname,
			     APK_BLOB_PTR_LEN(dir->name, dir->namelen));
	return r;
151 152 153 154
}

static const struct apk_hash_ops file_hash_ops = {
	.node_offset = offsetof(struct apk_db_file, hash_node),
155 156 157
	.hash_key = apk_db_file_hash_key,
	.hash_item = apk_db_file_hash_item,
	.compare_item = apk_db_file_compare_item,
158 159 160
	.delete_item = (apk_hash_delete_f) free,
};

Timo Teräs's avatar
Timo Teräs committed
161 162 163 164 165
struct apk_name *apk_db_query_name(struct apk_database *db, apk_blob_t name)
{
	return (struct apk_name *) apk_hash_get(&db->available.names, name);
}

166
struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
167 168
{
	struct apk_name *pn;
169
	unsigned long hash = apk_hash_from_key(&db->available.names, name);
170

171
	pn = (struct apk_name *) apk_hash_get_hashed(&db->available.names, name, hash);
172 173 174 175 176 177 178
	if (pn != NULL)
		return pn;

	pn = calloc(1, sizeof(struct apk_name));
	if (pn == NULL)
		return NULL;

179
	pn->name = apk_blob_cstr(name);
180
	pn->id = db->name_id++;
181
	apk_hash_insert_hashed(&db->available.names, pn, hash);
182 183 184 185

	return pn;
}

186
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
187 188 189 190 191 192 193 194
{
	dir->refs--;
	if (dir->refs > 0)
		return;

	db->installed.stats.dirs--;

	if (dir->parent != NULL)
195
		apk_db_dir_unref(db, dir->parent);
196 197
}

198
static struct apk_db_dir *apk_db_dir_ref(struct apk_db_dir *dir)
199 200 201 202 203
{
	dir->refs++;
	return dir;
}

204 205
struct apk_db_dir *apk_db_dir_query(struct apk_database *db,
				    apk_blob_t name)
206 207 208 209
{
	return (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
}

210 211
static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
					 apk_blob_t name)
212 213 214
{
	struct apk_db_dir *dir;
	apk_blob_t bparent;
215
	unsigned long hash = apk_hash_from_key(&db->installed.dirs, name);
216
	int i;
217

218
	if (name.len && name.ptr[name.len-1] == '/')
219 220
		name.len--;

221
	dir = (struct apk_db_dir *) apk_hash_get_hashed(&db->installed.dirs, name, hash);
222
	if (dir != NULL)
223
		return apk_db_dir_ref(dir);
224

225
	db->installed.stats.dirs++;
226 227
	dir = malloc(sizeof(*dir) + name.len + 1);
	memset(dir, 0, sizeof(*dir));
228
	dir->refs = 1;
229
	dir->rooted_name[0] = '/';
Timo Teräs's avatar
Timo Teräs committed
230 231 232 233
	memcpy(dir->name, name.ptr, name.len);
	dir->name[name.len] = 0;
	dir->namelen = name.len;
	dir->hash = hash;
234
	apk_hash_insert_hashed(&db->installed.dirs, dir, hash);
235

236 237
	if (name.len == 0)
		dir->parent = NULL;
238
	else if (apk_blob_rsplit(name, '/', &bparent, NULL))
239
		dir->parent = apk_db_dir_get(db, bparent);
240
	else
241
		dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
242

243 244 245 246
	if (dir->parent != NULL)
		dir->flags = dir->parent->flags;

	for (i = 0; i < db->protected_paths->num; i++) {
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
		int flags = dir->flags, j;

		flags |= APK_DBDIRF_PROTECTED;
		for (j = 0; ; j++) {
			switch (db->protected_paths->item[i][j]) {
			case '-':
				flags &= ~(APK_DBDIRF_PROTECTED |
					   APK_DBDIRF_SYMLINKS_ONLY);
				continue;
			case '*':
				flags |= APK_DBDIRF_SYMLINKS_ONLY |
					 APK_DBDIRF_PROTECTED;
				continue;
			}
			break;
		}

		if (strcmp(&db->protected_paths->item[i][j], dir->name) == 0)
			dir->flags = flags;
266 267
	}

268 269 270
	return dir;
}

271 272 273
static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
						   struct apk_package *pkg,
						   apk_blob_t name,
274
						   struct hlist_node ***after)
275 276 277 278
{
	struct apk_db_dir_instance *diri;

	diri = calloc(1, sizeof(struct apk_db_dir_instance));
279
	if (diri != NULL) {
280 281
		hlist_add_after(&diri->pkg_dirs_list, *after);
		*after = &diri->pkg_dirs_list.next;
282
		diri->dir = apk_db_dir_get(db, name);
283 284
		diri->pkg = pkg;
	}
285 286 287 288 289 290 291 292 293 294 295 296

	return diri;
}

static void apk_db_diri_set(struct apk_db_dir_instance *diri, mode_t mode,
			    uid_t uid, gid_t gid)
{
	diri->mode = mode;
	diri->uid = uid;
	diri->gid = gid;
}

297
static void apk_db_diri_mkdir(struct apk_database *db, struct apk_db_dir_instance *diri)
298
{
299 300
	if (mkdirat(db->root_fd, diri->dir->name, diri->mode) == 0)
		fchownat(db->root_fd, diri->dir->name, diri->uid, diri->gid, 0);
301 302
}

303
static void apk_db_diri_rmdir(struct apk_database *db, struct apk_db_dir_instance *diri)
304
{
Timo Teräs's avatar
Timo Teräs committed
305
	if (diri->dir->refs == 1)
306
		unlinkat(db->root_fd, diri->dir->name, 1);
307 308
}

309 310 311
static void apk_db_diri_free(struct apk_database *db,
			     struct apk_db_dir_instance *diri)
{
312
	apk_db_dir_unref(db, diri->dir);
313 314 315
	free(diri);
}

316 317 318 319 320 321 322 323 324 325 326 327 328 329 330
struct apk_db_file *apk_db_file_query(struct apk_database *db,
				      apk_blob_t dir,
				      apk_blob_t name)
{
	struct apk_db_file_hash_key key;

	key = (struct apk_db_file_hash_key) {
		.dirname = dir,
		.filename = name,
	};

	return (struct apk_db_file *) apk_hash_get(&db->installed.files,
						   APK_BLOB_BUF(&key));
}

Timo Teräs's avatar
Timo Teräs committed
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352
static struct apk_db_file *apk_db_file_new(struct apk_db_dir_instance *diri,
					   apk_blob_t name,
					   struct hlist_node ***after)
{
	struct apk_db_file *file;

	file = malloc(sizeof(*file) + name.len + 1);
	if (file == NULL)
		return NULL;

	memset(file, 0, sizeof(*file));
	memcpy(file->name, name.ptr, name.len);
	file->name[name.len] = 0;
	file->namelen = name.len;

	file->diri = diri;
	hlist_add_after(&file->diri_files_list, *after);
	*after = &file->diri_files_list.next;

	return file;
}

353
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
354
					   struct apk_db_dir_instance *diri,
355 356
					   apk_blob_t name,
					   struct hlist_node ***after)
357 358
{
	struct apk_db_file *file;
359
	struct apk_db_file_hash_key key;
Timo Teräs's avatar
Timo Teräs committed
360 361
	struct apk_db_dir *dir = diri->dir;
	unsigned long hash;
362 363

	key = (struct apk_db_file_hash_key) {
Timo Teräs's avatar
Timo Teräs committed
364
		.dirname = APK_BLOB_PTR_LEN(dir->name, dir->namelen),
365 366
		.filename = name,
	};
367

Timo Teräs's avatar
Timo Teräs committed
368 369 370
	hash = apk_blob_hash_seed(name, dir->hash);
	file = (struct apk_db_file *) apk_hash_get_hashed(
		&db->installed.files, APK_BLOB_BUF(&key), hash);
371 372 373
	if (file != NULL)
		return file;

Timo Teräs's avatar
Timo Teräs committed
374
	file = apk_db_file_new(diri, name, after);
Timo Teräs's avatar
Timo Teräs committed
375
	apk_hash_insert_hashed(&db->installed.files, file, hash);
376
	db->installed.stats.files++;
377 378 379 380

	return file;
}

Timo Teräs's avatar
Timo Teräs committed
381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399
static void apk_db_pkg_rdepends(struct apk_database *db, struct apk_package *pkg)
{
	int i, j;

	if (pkg->depends == NULL)
		return;

	for (i = 0; i < pkg->depends->num; i++) {
		struct apk_name *rname = pkg->depends->item[i].name;

		if (rname->rdepends) {
			for (j = 0; j < rname->rdepends->num; j++)
				if (rname->rdepends->item[j] == pkg->name)
					return;
		}
		*apk_name_array_add(&rname->rdepends) = pkg->name;
	}
}

400
struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg)
401 402 403
{
	struct apk_package *idb;

Timo Teräs's avatar
Timo Teräs committed
404
	idb = apk_hash_get(&db->available.packages, APK_BLOB_CSUM(pkg->csum));
405 406 407 408
	if (idb == NULL) {
		idb = pkg;
		apk_hash_insert(&db->available.packages, pkg);
		*apk_package_array_add(&pkg->name->pkgs) = pkg;
Timo Teräs's avatar
Timo Teräs committed
409
		apk_db_pkg_rdepends(db, pkg);
410 411
	} else {
		idb->repos |= pkg->repos;
412 413 414 415
		if (idb->filename == NULL && pkg->filename != NULL) {
			idb->filename = pkg->filename;
			pkg->filename = NULL;
		}
416 417 418 419 420
		if (idb->ipkg == NULL && pkg->ipkg != NULL) {
			idb->ipkg = pkg->ipkg;
			idb->ipkg->pkg = idb;
			pkg->ipkg = NULL;
		}
421 422 423 424 425
		apk_pkg_free(pkg);
	}
	return idb;
}

426
void apk_cache_format_index(apk_blob_t to, struct apk_repository *repo, int ver)
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
	/* APKINDEX.12345678.tar.gz */
	/* APK_INDEX.12345678.gz */
	if (ver == 0)
		apk_blob_push_blob(&to, APK_BLOB_STR("APKINDEX."));
	else
		apk_blob_push_blob(&to, APK_BLOB_STR("APK_INDEX."));
	apk_blob_push_hexdump(&to, APK_BLOB_PTR_LEN((char *) repo->csum.data,
						    APK_CACHE_CSUM_BYTES));
	if (ver == 0)
		apk_blob_push_blob(&to, APK_BLOB_STR(".tar.gz"));
	else
		apk_blob_push_blob(&to, APK_BLOB_STR(".gz"));
	apk_blob_push_blob(&to, APK_BLOB_PTR_LEN("", 1));
}

int apk_cache_download(struct apk_database *db, const char *url,
		       const char *item, const char *cacheitem, int verify)
{
	char fullurl[PATH_MAX];
	int r;

	snprintf(fullurl, sizeof(fullurl), "%s%s%s",
		 url, url[strlen(url)-1] == '/' ? "" : "/", item);
	apk_message("fetch %s", fullurl);

	if (apk_flags & APK_SIMULATE)
		return 0;

	r = apk_url_download(fullurl, db->cachetmp_fd, cacheitem);
	if (r < 0)
		return r;

	if (verify != APK_SIGN_NONE) {
		struct apk_istream *is;
		struct apk_sign_ctx sctx;

		apk_sign_ctx_init(&sctx, APK_SIGN_VERIFY, NULL, db->keys_fd);
		is = apk_bstream_gunzip_mpart(
			apk_bstream_from_file(db->cachetmp_fd, cacheitem),
			apk_sign_ctx_mpart_cb, &sctx);

		r = apk_tar_parse(is, apk_sign_ctx_verify_tar, &sctx, FALSE);
		is->close(is);
		apk_sign_ctx_free(&sctx);
		if (r != 0) {
			unlinkat(db->cachetmp_fd, cacheitem, 0);
			return r;
		}
	}
477

478 479
	if (renameat(db->cachetmp_fd, cacheitem, db->cache_fd, cacheitem) < 0)
		return -errno;
480

481
	return 0;
482 483
}

Timo Teräs's avatar
Timo Teräs committed
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
int apk_db_read_overlay(struct apk_database *db, struct apk_bstream *bs)
{
	struct apk_db_dir_instance *diri = NULL;
	struct hlist_node **diri_node = NULL, **file_diri_node = NULL;
	struct apk_package *pkg;
	struct apk_installed_package *ipkg;
	struct apk_db_file *file;
	apk_blob_t token = APK_BLOB_STR("\n"), line, bdir, bfile;

	pkg = apk_pkg_new();
	if (pkg == NULL)
		return -1;

	ipkg = apk_pkg_install(db, pkg);
	if (ipkg == NULL)
		return -1;

	diri_node = hlist_tail_ptr(&ipkg->owned_dirs);

	while (!APK_BLOB_IS_NULL(line = bs->read(bs, token))) {
		if (!apk_blob_rsplit(line, '/', &bdir, &bfile))
			break;

		if (bfile.len == 0) {
			diri = apk_db_diri_new(db, pkg, bdir, &diri_node);
			file_diri_node = &diri->owned_files.first;
		} else {
			file = apk_db_file_get(db, diri, bfile, &file_diri_node);
		}
	}

	return 0;
}

518
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
519 520
{
	struct apk_package *pkg = NULL;
521
	struct apk_installed_package *ipkg = NULL;
522
	struct apk_db_dir_instance *diri = NULL;
523
	struct apk_db_file *file = NULL;
524 525
	struct hlist_node **diri_node = NULL;
	struct hlist_node **file_diri_node = NULL;
526 527
	apk_blob_t token = APK_BLOB_STR("\n"), l;
	int field;
528

529 530 531 532
	while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
		if (l.len < 2 || l.ptr[1] != ':') {
			if (pkg == NULL)
				continue;
533

534
			if (repo >= 0)
535
				pkg->repos |= BIT(repo);
536

537
			if (apk_db_pkg_add(db, pkg) == NULL) {
538 539
				apk_error("Installed database load failed");
				return -1;
540
			}
541
			pkg = NULL;
542
			ipkg = NULL;
543 544
			continue;
		}
545

546 547 548 549 550 551 552 553 554 555
		/* Get field */
		field = l.ptr[0];
		l.ptr += 2;
		l.len -= 2;

		/* If no package, create new */
		if (pkg == NULL) {
			pkg = apk_pkg_new();
			diri = NULL;
			file_diri_node = NULL;
556 557 558 559 560

			if (repo == -1) {
				ipkg = apk_pkg_install(db, pkg);
				diri_node = hlist_tail_ptr(&ipkg->owned_dirs);
			}
561
		}
562

563 564 565 566 567 568 569 570
		/* Standard index line? */
		if (apk_pkg_add_info(db, pkg, field, l) == 0)
			continue;

		if (repo != -1) {
			apk_error("Invalid index entry '%c'", field);
			return -1;
		}
571

572 573 574 575 576
		/* Check FDB special entries */
		switch (field) {
		case 'F':
			if (pkg->name == NULL) {
				apk_error("FDB directory entry before package entry");
577 578
				return -1;
			}
579 580 581 582 583 584 585 586
			diri = apk_db_diri_new(db, pkg, l, &diri_node);
			file_diri_node = &diri->owned_files.first;
			break;
		case 'M':
			if (diri == NULL) {
				apk_error("FDB directory metadata entry before directory entry");
				return -1;
			}
587 588 589 590 591
			diri->uid = apk_blob_pull_uint(&l, 10);
			apk_blob_pull_char(&l, ':');
			diri->gid = apk_blob_pull_uint(&l, 10);
			apk_blob_pull_char(&l, ':');
			diri->mode = apk_blob_pull_uint(&l, 8);
592 593 594 595 596 597
			break;
		case 'R':
			if (diri == NULL) {
				apk_error("FDB file entry before directory entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
598
			file = apk_db_file_get(db, diri, l, &file_diri_node);
599 600 601 602 603 604
			break;
		case 'Z':
			if (file == NULL) {
				apk_error("FDB checksum entry before file entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
605
			apk_blob_pull_csum(&l, &file->csum);
606 607 608 609
			break;
		default:
			apk_error("FDB entry '%c' unsupported", field);
			return -1;
610
		}
611 612 613 614
		if (APK_BLOB_IS_NULL(l)) {
			apk_error("FDB format error in entry '%c'", field);
			return -1;
		}
615 616
	}

617
	return 0;
618 619
}

Timo Teräs's avatar
Timo Teräs committed
620
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
621
{
622
	struct apk_installed_package *ipkg;
623
	struct apk_package *pkg;
624
	struct apk_db_dir_instance *diri;
625
	struct apk_db_file *file;
626
	struct hlist_node *c1, *c2;
627
	char buf[1024];
628 629
	apk_blob_t bbuf = APK_BLOB_BUF(buf);
	int r;
630

631 632
	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		pkg = ipkg->pkg;
633 634 635
		r = apk_pkg_write_index_entry(pkg, os);
		if (r < 0)
			return r;
636

637
		hlist_for_each_entry(diri, c1, &ipkg->owned_dirs, pkg_dirs_list) {
638 639 640 641 642 643 644 645 646
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("F:"));
			apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN(diri->dir->name, diri->dir->namelen));
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nM:"));
			apk_blob_push_uint(&bbuf, diri->uid, 10);
			apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
			apk_blob_push_uint(&bbuf, diri->gid, 10);
			apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
			apk_blob_push_uint(&bbuf, diri->mode, 8);
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
647

648
			hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
649 650
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("R:"));
				apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN(file->name, file->namelen));
Timo Teräs's avatar
Timo Teräs committed
651
				if (file->csum.type != APK_CHECKSUM_NONE) {
652
					apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nZ:"));
Timo Teräs's avatar
Timo Teräs committed
653
					apk_blob_push_csum(&bbuf, &file->csum);
654
				}
655
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
656

657
				if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
658
					return -1;
659
				bbuf = APK_BLOB_BUF(buf);
660
			}
661
			if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
662
				return -1;
663
			bbuf = APK_BLOB_BUF(buf);
664
		}
Timo Teräs's avatar
Timo Teräs committed
665
		os->write(os, "\n", 1);
666 667 668 669 670
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
671
static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
672
{
673
	struct apk_installed_package *ipkg;
674
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
675 676 677
	struct apk_file_info fi;
	char filename[256];
	apk_blob_t bfn;
678
	int r, i;
679
	time_t now = time(NULL);
680 681 682 683 684 685 686

	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		pkg = ipkg->pkg;

		for (i = 0; i < APK_SCRIPT_MAX; i++) {
			if (ipkg->script[i].ptr == NULL)
				continue;
687

Timo Teräs's avatar
Timo Teräs committed
688 689
			fi = (struct apk_file_info) {
				.name = filename,
690
				.size = ipkg->script[i].len,
Timo Teräs's avatar
Timo Teräs committed
691
				.mode = 0755 | S_IFREG,
692
				.mtime = now,
Timo Teräs's avatar
Timo Teräs committed
693 694 695 696 697 698 699 700 701 702
			};
			/* The scripts db expects file names in format:
			 * pkg-version.<hexdump of package checksum>.action */
			bfn = APK_BLOB_BUF(filename);
			apk_blob_push_blob(&bfn, APK_BLOB_STR(pkg->name->name));
			apk_blob_push_blob(&bfn, APK_BLOB_STR("-"));
			apk_blob_push_blob(&bfn, APK_BLOB_STR(pkg->version));
			apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
			apk_blob_push_csum(&bfn, &pkg->csum);
			apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
703
			apk_blob_push_blob(&bfn, APK_BLOB_STR(apk_script_types[i]));
Timo Teräs's avatar
Timo Teräs committed
704 705
			apk_blob_push_blob(&bfn, APK_BLOB_PTR_LEN("", 1));

706
			r = apk_tar_write_entry(os, &fi, ipkg->script[i].ptr);
Timo Teräs's avatar
Timo Teräs committed
707 708
			if (r < 0)
				return r;
709 710 711
		}
	}

712
	return apk_tar_write_entry(os, NULL, NULL);
713 714
}

Timo Teräs's avatar
Timo Teräs committed
715
static int apk_db_scriptdb_read_v1(struct apk_database *db, struct apk_istream *is)
716 717
{
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
718 719 720 721 722 723
	struct {
		unsigned char md5sum[16];
		unsigned int type;
		unsigned int size;
	} hdr;
	struct apk_checksum csum;
724

725
	while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
Timo Teräs's avatar
Timo Teräs committed
726 727 728 729
		memcpy(csum.data, hdr.md5sum, sizeof(hdr.md5sum));
		csum.type = APK_CHECKSUM_MD5;

		pkg = apk_db_get_pkg(db, &csum);
730 731
		if (pkg != NULL && pkg->ipkg != NULL)
			apk_ipkg_add_script(pkg->ipkg, is, hdr.type, hdr.size);
Timo Teräs's avatar
Timo Teräs committed
732 733
		else
			apk_istream_skip(is, hdr.size);
734 735 736 737 738
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772
static int apk_read_script_archive_entry(void *ctx,
					 const struct apk_file_info *ae,
					 struct apk_istream *is)
{
	struct apk_database *db = (struct apk_database *) ctx;
	struct apk_package *pkg;
	char *fncsum, *fnaction;
	struct apk_checksum csum;
	apk_blob_t blob;
	int type;

	if (!S_ISREG(ae->mode))
		return 0;

	/* The scripts db expects file names in format:
	 * pkgname-version.<hexdump of package checksum>.action */
	fnaction = memrchr(ae->name, '.', strlen(ae->name));
	if (fnaction == NULL || fnaction == ae->name)
		return 0;
	fncsum = memrchr(ae->name, '.', fnaction - ae->name - 1);
	if (fncsum == NULL)
		return 0;
	fnaction++;
	fncsum++;

	/* Parse it */
	type = apk_script_type(fnaction);
	if (type == APK_SCRIPT_INVALID)
		return 0;
	blob = APK_BLOB_PTR_PTR(fncsum, fnaction - 2);
	apk_blob_pull_csum(&blob, &csum);

	/* Attach script */
	pkg = apk_db_get_pkg(db, &csum);
773 774
	if (pkg != NULL && pkg->ipkg != NULL)
		apk_ipkg_add_script(pkg->ipkg, is, type, ae->size);
Timo Teräs's avatar
Timo Teräs committed
775 776 777 778

	return 0;
}

779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
static int parse_triggers(void *ctx, apk_blob_t blob)
{
	struct apk_installed_package *ipkg = ctx;

	if (blob.len == 0)
		return 0;

	*apk_string_array_add(&ipkg->triggers) = apk_blob_cstr(blob);
	return 0;
}

static void apk_db_triggers_write(struct apk_database *db, struct apk_ostream *os)
{
	struct apk_installed_package *ipkg;
	char buf[APK_BLOB_CHECKSUM_BUF];
	apk_blob_t bfn;
	int i;

	list_for_each_entry(ipkg, &db->installed.triggers, trigger_pkgs_list) {
		bfn = APK_BLOB_BUF(buf);
		apk_blob_push_csum(&bfn, &ipkg->pkg->csum);
800 801
		os->write(os, buf, bfn.ptr - buf);

802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832
		for (i = 0; i < ipkg->triggers->num; i++) {
			os->write(os, " ", 1);
			apk_ostream_write_string(os, ipkg->triggers->item[i]);
		}
		os->write(os, "\n", 1);
	}
}

static void apk_db_triggers_read(struct apk_database *db, struct apk_bstream *bs)
{
	struct apk_checksum csum;
	struct apk_package *pkg;
	struct apk_installed_package *ipkg;
	apk_blob_t l;

	while (!APK_BLOB_IS_NULL(l = bs->read(bs, APK_BLOB_STR("\n")))) {
		apk_blob_pull_csum(&l, &csum);
		apk_blob_pull_char(&l, ' ');

		pkg = apk_db_get_pkg(db, &csum);
		if (pkg == NULL || pkg->ipkg == NULL)
			continue;

		ipkg = pkg->ipkg;
		apk_blob_for_each_segment(l, " ", parse_triggers, ipkg);
		if (ipkg->triggers && !list_hashed(&ipkg->trigger_pkgs_list))
			list_add_tail(&ipkg->trigger_pkgs_list,
				      &db->installed.triggers);
	}
}

Timo Teräs's avatar
Timo Teräs committed
833
static int apk_db_read_state(struct apk_database *db, int flags)
834
{
835
	struct apk_istream *is;
836
	struct apk_bstream *bs;
Timo Teräs's avatar
Timo Teräs committed
837
	apk_blob_t blob;
838
	int i;
839 840 841 842 843 844 845 846 847

	/* Read:
	 * 1. installed repository
	 * 2. source repositories
	 * 3. master dependencies
	 * 4. package statuses
	 * 5. files db
	 * 6. script db
	 */
Timo Teräs's avatar
Timo Teräs committed
848
	if (!(flags & APK_OPENF_NO_WORLD)) {
849
		blob = apk_blob_from_file(db->root_fd, "var/lib/apk/world");
Timo Teräs's avatar
Timo Teräs committed
850 851 852 853
		if (APK_BLOB_IS_NULL(blob))
			return -ENOENT;
		apk_deps_parse(db, &db->world, blob);
		free(blob.ptr);
854

Timo Teräs's avatar
Timo Teräs committed
855
		for (i = 0; db->world != NULL && i < db->world->num; i++)
Timo Teräs's avatar
Timo Teräs committed
856 857
			db->world->item[i].name->flags |= APK_NAME_TOPLEVEL;
	}
858

Timo Teräs's avatar
Timo Teräs committed
859
	if (!(flags & APK_OPENF_NO_INSTALLED)) {
860
		bs = apk_bstream_from_file(db->root_fd, "var/lib/apk/installed");
861 862 863
		if (bs != NULL) {
			apk_db_index_read(db, bs, -1);
			bs->close(bs, NULL);
Timo Teräs's avatar
Timo Teräs committed
864
		}
865

866 867 868 869 870 871
		if (apk_db_cache_active(db)) {
			bs = apk_bstream_from_file(db->cache_fd, "installed");
			if (bs != NULL) {
				apk_db_index_read(db, bs, -2);
				bs->close(bs, NULL);
			}
872
		}
873 874 875 876 877 878

		bs = apk_bstream_from_file(db->root_fd, "var/lib/apk/triggers");
		if (bs != NULL) {
			apk_db_triggers_read(db, bs);
			bs->close(bs, NULL);
		}
879 880
	}

Timo Teräs's avatar
Timo Teräs committed
881
	if (!(flags & APK_OPENF_NO_SCRIPTS)) {
882
		is = apk_istream_from_file(db->root_fd, "var/lib/apk/scripts.tar");
Timo Teräs's avatar
Timo Teräs committed
883
		if (is != NULL) {
884 885
			apk_tar_parse(is, apk_read_script_archive_entry, db,
				      FALSE);
Timo Teräs's avatar
Timo Teräs committed
886
		} else {
887
			is = apk_istream_from_file(db->root_fd, "var/lib/apk/scripts");
Timo Teräs's avatar
Timo Teräs committed
888 889
			if (is != NULL)
				apk_db_scriptdb_read_v1(db, is);
Timo Teräs's avatar
Timo Teräs committed
890
		}
Timo Teräs's avatar
Timo Teräs committed
891 892
		if (is != NULL)
			is->close(is);
893 894 895 896 897
	}

	return 0;
}

898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
struct index_write_ctx {
	struct apk_ostream *os;
	int count;
	int force;
};

static int write_index_entry(apk_hash_item item, void *ctx)
{
	struct index_write_ctx *iwctx = (struct index_write_ctx *) ctx;
	struct apk_package *pkg = (struct apk_package *) item;
	int r;

	if (!iwctx->force && pkg->filename == NULL)
		return 0;

	r = apk_pkg_write_index_entry(pkg, iwctx->os);
	if (r < 0)
		return r;

	if (iwctx->os->write(iwctx->os, "\n", 1) != 1)
		return -1;

	iwctx->count++;
	return 0;
}

static int apk_db_index_write_nr_cache(struct apk_database *db)
{
	struct index_write_ctx ctx = { NULL, 0, TRUE };
927
	struct apk_installed_package *ipkg;
928 929 930 931 932 933 934 935
	struct apk_ostream *os;
	int r;

	if (!apk_db_cache_active(db))
		return 0;

	/* Write list of installed non-repository packages to
	 * cached index file */
936 937 938 939
	os = apk_ostream_to_file(db->cache_fd,
				 "installed",
				 "installed.new",
				 0644);
940 941 942
	if (os == NULL)
		return -1;

943
	ctx.os = os;
944 945
	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		if (ipkg->pkg->repos != 0)
946
			continue;
947
		r = write_index_entry(ipkg->pkg, &ctx);
948 949 950
		if (r != 0)
			return r;
	}
951 952 953
	r = os->close(os);
	if (r < 0)
		return r;
954 955 956 957 958 959 960 961 962 963 964 965 966

	return ctx.count;
}

int apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
{
	struct index_write_ctx ctx = { os, 0, FALSE };

	apk_hash_foreach(&db->available.packages, write_index_entry, &ctx);

	return ctx.count;
}

967 968 969 970 971 972 973 974
static int add_protected_path(void *ctx, apk_blob_t blob)
{
	struct apk_database *db = (struct apk_database *) ctx;

	*apk_string_array_add(&db->protected_paths) = apk_blob_cstr(blob);
	return 0;
}

975 976 977 978
static int apk_db_create(struct apk_database *db)
{
	int fd;

979 980 981 982 983 984
	mkdirat(db->root_fd, "tmp", 01777);
	mkdirat(db->root_fd, "dev", 0755);
	mknodat(db->root_fd, "dev/null", 0666, makedev(1, 3));
	mkdirat(db->root_fd, "var", 0755);
	mkdirat(db->root_fd, "var/lib", 0755);
	mkdirat(db->root_fd, "var/lib/apk", 0755);
985 986
	mkdirat(db->root_fd, "var/cache", 0755);
	mkdirat(db->root_fd, "var/cache/misc", 0755);
987

988
	fd = openat(db->root_fd, "var/lib/apk/world", O_CREAT|O_RDWR|O_TRUNC, 0644);
989 990 991 992 993 994 995
	if (fd < 0)
		return -errno;
	close(fd);

	return 0;
}

996 997 998 999
static void handle_alarm(int sig)
{
}

1000
int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
1001
{
1002 1003
	const char *msg = NULL;
	struct apk_repository_list *repo = NULL;
1004
	struct stat64 st;
Timo Teräs's avatar
Timo Teräs committed
1005
	apk_blob_t blob;
1006
	int r, rr = 0;
1007

1008
	memset(db, 0, sizeof(*db));
1009 1010 1011 1012 1013 1014
	if (dbopts->open_flags == 0) {
		msg = "Invalid open flags (internal error)";
		r = -1;
		goto ret_r;
	}

1015 1016
	apk_hash_init(&db->available.names, &pkg_name_hash_ops, 1000);
	apk_hash_init(&db->available.packages, &pkg_info_hash_ops, 4000);
Timo Teräs's avatar
Timo Teräs committed
1017 1018
	apk_hash_init(&db->installed.dirs, &dir_hash_ops, 2000);
	apk_hash_init(&db->installed.files, &file_hash_ops, 10000);
1019
	list_init(&db->installed.packages);
1020
	list_init(&db->installed.triggers);
Timo Teräs's avatar
Timo Teräs committed
1021
	db->cache_dir = apk_static_cache_dir;
1022
	db->permanent = 1;
1023

1024
	db->root = strdup(dbopts->root ?: "/");
1025
	db->root_fd = openat(AT_FDCWD, db->root, O_RDONLY);
1026
	if (db->root_fd < 0 && (dbopts->open_flags & APK_OPENF_CREATE)) {
1027
		mkdirat(AT_FDCWD, db->root, 0755);
1028
		db->root_fd = openat(AT_FDCWD, db->root, O_RDONLY);
1029 1030 1031 1032 1033 1034 1035 1036 1037
	}
	if (db->root_fd < 0) {
		msg = "Unable to open root";
		goto ret_errno;
	}
	if (fstat64(db->root_fd, &st) != 0 || major(st.st_dev) == 0)
		db->permanent = 0;

	if (fstatat64(db->root_fd, apk_linked_cache_dir, &st, 0) == 0 &&
1038
	    S_ISDIR(st.st_mode) && major(st.st_dev) != 0)
1039 1040
		db->cache_dir = apk_linked_cache_dir;

1041
	if (dbopts->open_flags & APK_OPENF_WRITE) {
1042 1043 1044
		db->lock_fd = openat(db->root_fd, "var/lib/apk/lock",
				     O_CREAT | O_RDWR, 0400);
		if (db->lock_fd < 0 && errno == ENOENT &&
1045
		    (dbopts->open_flags & APK_OPENF_CREATE)) {
1046 1047 1048 1049 1050
			r = apk_db_create(db);
			if (r != 0) {
				msg = "Unable to create database";
				goto ret_r;
			}
1051 1052
			db->lock_fd = openat(db->root_fd, "var/lib/apk/lock",
					     O_CREAT | O_RDWR, 0400);
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
		}
		if (db->lock_fd < 0 ||
		    flock(db->lock_fd, LOCK_EX | LOCK_NB) < 0) {
			msg = "Unable to lock database";
			if (apk_wait) {
				struct sigaction sa, old_sa;

				apk_message("Waiting for repository lock");
				memset(&sa, 0, sizeof sa);
				sa.sa_handler = handle_alarm;
				sa.sa_flags   = SA_ONESHOT;
				sigaction(SIGALRM, &sa, &old_sa);

				alarm(apk_wait);
				if (flock(db->lock_fd, LOCK_EX) < 0)
Timo Teräs's avatar
Timo Teräs committed
1068
					goto ret_errno;
1069 1070 1071 1072 1073

				alarm(0);
				sigaction(SIGALRM, &old_sa, NULL);
			} else
				goto ret_errno;
1074 1075
		}
	}
1076

1077
	blob = APK_BLOB_STR("etc:*etc/init.d");
1078 1079
	apk_blob_for_each_segment(blob, ":", add_protected_path, db);

1080 1081 1082
	db->cache_fd = openat(db->root_fd, db->cache_dir, O_RDONLY);
	mkdirat(db->cache_fd, "tmp", 0644);
	db->cachetmp_fd = openat(db->cache_fd, "tmp", O_RDONLY);
1083 1084 1085
	db->keys_fd = openat(db->root_fd,
			     dbopts->keys_dir ?: "etc/apk/keys",
			     O_RDONLY);
1086

Timo Teräs's avatar
Timo Teräs committed
1087 1088 1089 1090 1091 1092
	if (apk_flags & APK_OVERLAY_FROM_STDIN) {
		apk_flags &= ~APK_OVERLAY_FROM_STDIN;
		apk_db_read_overlay(db, apk_bstream_from_istream(
				apk_istream_from_fd(STDIN_FILENO)));
	}

1093 1094
	r = apk_db_read_state(db, dbopts->open_flags);
	if (r == -ENOENT && (dbopts->open_flags & APK_OPENF_CREATE)) {
1095
		r = apk_db_create(db);
Timo Teräs's avatar
Timo Teräs committed
1096
		if (r != 0) {
1097
			msg = "Unable to create database";
Timo Teräs's avatar
Timo Teräs committed
1098
			goto ret_r;
1099
		}
1100
		r = apk_db_read_state(db, dbopts->open_flags);
1101 1102 1103 1104
	}
	if (r != 0) {
		msg = "Unable to read database state";
		goto ret_r;
1105 1106
	}

1107 1108
	if (!(dbopts->open_flags & APK_OPENF_NO_REPOS)) {
		list_for_each_entry(repo, &dbopts->repository_list, list) {
1109 1110 1111
			r = apk_db_add_repository(db, APK_BLOB_STR(repo->url));
			rr = r ?: rr;
		}
1112 1113 1114
		blob = apk_blob_from_file(
			db->root_fd,
			dbopts->repositories_file ?: "etc/apk/repositories");
1115 1116 1117 1118 1119 1120 1121
		if (!APK_BLOB_IS_NULL(blob)) {
			r = apk_blob_for_each_segment(
				blob, "\n",
				apk_db_add_repository, db);
			rr = r ?: rr;
			free(blob.ptr);
		}
1122 1123
		if (apk_flags & APK_UPDATE_CACHE)
			apk_db_index_write_nr_cache(db);
1124
	}
1125 1126 1127 1128
	if (rr != 0) {
		r = rr;
		goto ret_r;
	}
1129

1130
	return rr;
1131 1132 1133 1134

ret_errno:
	r = -errno;
ret_r:
Natanael Copa's avatar
Natanael Copa committed
1135 1136
	if (msg != NULL)
		apk_error("%s: %s", msg, strerror(-r));
1137
	apk_db_close(db);
1138

1139
	return r;
1140 1141
}

1142 1143 1144 1145 1146
struct write_ctx {
	struct apk_database *db;
	int fd;
};

1147
int apk_db_write_config(struct apk_database *db)
1148
{
Timo Teräs's avatar
Timo Teräs committed
1149
	struct apk_ostream *os;
1150
	int r;
1151

1152
	if ((apk_flags & APK_SIMULATE) || db->root == NULL)
1153
		return 0;
1154

1155 1156 1157 1158 1159
	if (db->lock_fd == 0) {
		apk_error("Refusing to write db without write lock!");
		return -1;
	}

1160 1161 1162 1163
	os = apk_ostream_to_file(db->root_fd,
				 "var/lib/apk/world",
				 "var/lib/apk/world.new",
				 0644);
Timo Teräs's avatar
Timo Teräs committed
1164
	if (os == NULL)
1165
		return -1;
1166

1167 1168
	apk_deps_write(db->world, os);
	os->write(os, "\n", 1);
1169 1170 1171
	r = os->close(os);
	if (r < 0)
		return r;
1172

1173 1174 1175 1176
	os = apk_ostream_to_file(db->root_fd,
				 "var/lib/apk/installed",
				 "var/lib/apk/installed.new",
				 0644);