database.c 34 KB
Newer Older
1 2 3 4 5 6
/* database.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
 * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
 * 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 <sys/file.h>
22 23 24 25 26

#include "apk_defines.h"
#include "apk_package.h"
#include "apk_database.h"
#include "apk_state.h"
27
#include "apk_applet.h"
28

Timo Teräs's avatar
Timo Teräs committed
29
const char * const apk_index_gz = "APK_INDEX.gz";
Timo Teräs's avatar
Timo Teräs committed
30 31 32
static const char * const apk_static_cache_dir = "var/lib/apk";
static const char * const apk_linked_cache_dir = "etc/apk/cache";

33 34 35 36 37
struct install_ctx {
	struct apk_database *db;
	struct apk_package *pkg;

	int script;
38
	struct apk_db_dir_instance *diri;
39
	csum_t data_csum;
40

41 42 43 44 45
	apk_progress_cb cb;
	void *cb_ctx;
	size_t installed_size;
	size_t current_file_size;

46 47
	struct hlist_node **diri_node;
	struct hlist_node **file_diri_node;
48 49
};

50
static apk_blob_t pkg_name_get_key(apk_hash_item item)
51
{
52
	return APK_BLOB_STR(((struct apk_name *) item)->name);
53 54
}

55 56 57 58 59 60 61
static void pkg_name_free(struct apk_name *name)
{
	free(name->name);
	free(name->pkgs);
	free(name);
}

62 63 64
static const struct apk_hash_ops pkg_name_hash_ops = {
	.node_offset = offsetof(struct apk_name, hash_node),
	.get_key = pkg_name_get_key,
65 66
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
67
	.delete_item = (apk_hash_delete_f) pkg_name_free,
68 69
};

70
static apk_blob_t pkg_info_get_key(apk_hash_item item)
71
{
72
	return APK_BLOB_BUF(((struct apk_package *) item)->csum);
73 74
}

75
static unsigned long csum_hash(apk_blob_t csum)
76
{
77 78
	/* Checksum's highest bits have the most "randomness", use that
	 * directly as hash */
79
	return *(unsigned long *) csum.ptr;
80 81 82 83 84
}

static const struct apk_hash_ops pkg_info_hash_ops = {
	.node_offset = offsetof(struct apk_package, hash_node),
	.get_key = pkg_info_get_key,
85 86
	.hash_key = csum_hash,
	.compare = apk_blob_compare,
87 88 89
	.delete_item = (apk_hash_delete_f) apk_pkg_free,
};

90
static apk_blob_t apk_db_dir_get_key(apk_hash_item item)
91
{
92
	return APK_BLOB_STR(((struct apk_db_dir *) item)->dirname);
93 94 95 96 97
}

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,
98 99
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
100 101 102
	.delete_item = (apk_hash_delete_f) free,
};

103 104 105 106 107 108
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)
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
	struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;

	return apk_blob_hash(key->dirname) ^
	       apk_blob_hash(key->filename);
}

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

	return apk_blob_hash(APK_BLOB_STR(dbf->diri->dir->dirname)) ^
	       apk_blob_hash(APK_BLOB_STR(dbf->filename));
}

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;
	int r;

	r = apk_blob_compare(key->dirname, APK_BLOB_STR(dbf->diri->dir->dirname));
	if (r != 0)
		return r;

	return apk_blob_compare(key->filename, APK_BLOB_STR(dbf->filename));
135 136 137 138
}

static const struct apk_hash_ops file_hash_ops = {
	.node_offset = offsetof(struct apk_db_file, hash_node),
139 140 141
	.hash_key = apk_db_file_hash_key,
	.hash_item = apk_db_file_hash_item,
	.compare_item = apk_db_file_compare_item,
142 143 144
	.delete_item = (apk_hash_delete_f) free,
};

Timo Teräs's avatar
Timo Teräs committed
145 146 147 148 149
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);
}

150
struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
151 152 153
{
	struct apk_name *pn;

Timo Teräs's avatar
Timo Teräs committed
154
	pn = apk_db_query_name(db, name);
155 156 157 158 159 160 161
	if (pn != NULL)
		return pn;

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

162
	pn->name = apk_blob_cstr(name);
163
	pn->id = db->name_id++;
164 165 166 167 168
	apk_hash_insert(&db->available.names, pn);

	return pn;
}

169
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
170 171 172 173 174 175 176 177
{
	dir->refs--;
	if (dir->refs > 0)
		return;

	db->installed.stats.dirs--;

	if (dir->parent != NULL)
178
		apk_db_dir_unref(db, dir->parent);
179 180
}

181
static struct apk_db_dir *apk_db_dir_ref(struct apk_db_dir *dir)
182 183 184 185 186
{
	dir->refs++;
	return dir;
}

187 188
struct apk_db_dir *apk_db_dir_query(struct apk_database *db,
				    apk_blob_t name)
189 190 191 192
{
	return (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
}

193 194
static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
					 apk_blob_t name)
195 196 197
{
	struct apk_db_dir *dir;
	apk_blob_t bparent;
198
	int i;
199

200
	if (name.len && name.ptr[name.len-1] == '/')
201 202
		name.len--;

203
	dir = apk_db_dir_query(db, name);
204
	if (dir != NULL)
205
		return apk_db_dir_ref(dir);
206

207
	db->installed.stats.dirs++;
208 209
	dir = malloc(sizeof(*dir) + name.len + 1);
	memset(dir, 0, sizeof(*dir));
210
	dir->refs = 1;
211 212 213 214
	memcpy(dir->dirname, name.ptr, name.len);
	dir->dirname[name.len] = 0;
	apk_hash_insert(&db->installed.dirs, dir);

215 216
	if (name.len == 0)
		dir->parent = NULL;
217
	else if (apk_blob_rsplit(name, '/', &bparent, NULL))
218
		dir->parent = apk_db_dir_get(db, bparent);
219
	else
220
		dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
221

222 223 224 225 226 227 228 229 230 231 232
	if (dir->parent != NULL)
		dir->flags = dir->parent->flags;

	for (i = 0; i < db->protected_paths->num; i++) {
		if (db->protected_paths->item[i][0] == '-' &&
		    strcmp(&db->protected_paths->item[i][1], dir->dirname) == 0)
			dir->flags &= ~APK_DBDIRF_PROTECTED;
		else if (strcmp(db->protected_paths->item[i], dir->dirname) == 0)
			dir->flags |= APK_DBDIRF_PROTECTED;
	}

233 234 235
	return dir;
}

236 237 238
static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
						   struct apk_package *pkg,
						   apk_blob_t name,
239
						   struct hlist_node ***after)
240 241 242 243
{
	struct apk_db_dir_instance *diri;

	diri = calloc(1, sizeof(struct apk_db_dir_instance));
244
	if (diri != NULL) {
245 246
		hlist_add_after(&diri->pkg_dirs_list, *after);
		*after = &diri->pkg_dirs_list.next;
247
		diri->dir = apk_db_dir_get(db, name);
248 249
		diri->pkg = pkg;
	}
250 251 252 253 254 255 256 257 258 259 260 261

	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;
}

262
static void apk_db_diri_mkdir(struct apk_db_dir_instance *diri)
263
{
264
	if (mkdir(diri->dir->dirname, diri->mode) == 0)
265 266 267
		chown(diri->dir->dirname, diri->uid, diri->gid);
}

268 269 270 271 272 273 274
static void apk_db_diri_rmdir(struct apk_db_dir_instance *diri)
{
	if (diri->dir->refs == 1) {
		rmdir(diri->dir->dirname);
	}
}

275 276 277
static void apk_db_diri_free(struct apk_database *db,
			     struct apk_db_dir_instance *diri)
{
278
	apk_db_dir_unref(db, diri->dir);
279 280 281
	free(diri);
}

282 283 284 285 286 287 288 289 290 291 292 293 294 295 296
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));
}

297
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
298
					   struct apk_db_dir_instance *diri,
299 300
					   apk_blob_t name,
					   struct hlist_node ***after)
301 302
{
	struct apk_db_file *file;
303 304 305 306 307 308
	struct apk_db_file_hash_key key;

	key = (struct apk_db_file_hash_key) {
		.dirname = APK_BLOB_STR(diri->dir->dirname),
		.filename = name,
	};
309

310 311
	file = (struct apk_db_file *) apk_hash_get(&db->installed.files,
						   APK_BLOB_BUF(&key));
312 313 314
	if (file != NULL)
		return file;

315 316
	file = malloc(sizeof(*file) + name.len + 1);
	memset(file, 0, sizeof(*file));
317 318
	memcpy(file->filename, name.ptr, name.len);
	file->filename[name.len] = 0;
319

320
	file->diri = diri;
321 322 323
	hlist_add_after(&file->diri_files_list, *after);
	*after = &file->diri_files_list.next;

324
	apk_hash_insert(&db->installed.files, file);
325
	db->installed.stats.files++;
326 327 328 329

	return file;
}

330 331 332 333
static void apk_db_file_change_owner(struct apk_database *db,
				     struct apk_db_file *file,
				     struct apk_db_dir_instance *diri,
				     struct hlist_node ***after)
334
{
335
	hlist_del(&file->diri_files_list, &file->diri->owned_files);
336
	file->diri = diri;
337 338
	hlist_add_after(&file->diri_files_list, *after);
	*after = &file->diri_files_list.next;
339 340
}

Timo Teräs's avatar
Timo Teräs committed
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359
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;
	}
}

360
struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg)
361 362 363 364 365 366 367 368
{
	struct apk_package *idb;

	idb = apk_hash_get(&db->available.packages, APK_BLOB_BUF(pkg->csum));
	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
369
		apk_db_pkg_rdepends(db, pkg);
370 371
	} else {
		idb->repos |= pkg->repos;
372 373 374 375
		if (idb->filename == NULL && pkg->filename != NULL) {
			idb->filename = pkg->filename;
			pkg->filename = NULL;
		}
376 377 378 379 380
		apk_pkg_free(pkg);
	}
	return idb;
}

381
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
382 383
{
	struct apk_package *pkg = NULL;
384
	struct apk_db_dir_instance *diri = NULL;
385
	struct apk_db_file *file = NULL;
386 387
	struct hlist_node **diri_node = NULL;
	struct hlist_node **file_diri_node = NULL;
388 389
	apk_blob_t token = APK_BLOB_STR("\n"), l;
	int field;
390

391 392 393 394
	while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
		if (l.len < 2 || l.ptr[1] != ':') {
			if (pkg == NULL)
				continue;
395

396 397 398 399
			if (repo != -1)
				pkg->repos |= BIT(repo);
			else
				apk_pkg_set_state(db, pkg, APK_PKG_INSTALLED);
400

401 402 403
			if (apk_db_pkg_add(db, pkg) != pkg && repo == -1) {
				apk_error("Installed database load failed");
				return -1;
404
			}
405 406 407
			pkg = NULL;
			continue;
		}
408

409 410 411 412 413 414 415 416 417 418 419 420
		/* 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;
			diri_node = hlist_tail_ptr(&pkg->owned_dirs);
			file_diri_node = NULL;
		}
421

422 423 424 425 426 427 428 429
		/* 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;
		}
430

431 432 433 434 435
		/* Check FDB special entries */
		switch (field) {
		case 'F':
			if (pkg->name == NULL) {
				apk_error("FDB directory entry before package entry");
436 437
				return -1;
			}
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
			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;
			}
			diri->uid = apk_blob_parse_uint(&l, 10);
			if (apk_blob_parse_char(&l) != ':')
				goto bad_mode;
			diri->gid = apk_blob_parse_uint(&l, 10);
			if (apk_blob_parse_char(&l) != ':')
				goto bad_mode;
			diri->mode = apk_blob_parse_uint(&l, 8);
			break;
		case 'R':
			if (diri == NULL) {
				apk_error("FDB file entry before directory entry");
				return -1;
			}
			file = apk_db_file_get(db, diri, l,
					       &file_diri_node);
			break;
		case 'Z':
			if (file == NULL) {
				apk_error("FDB checksum entry before file entry");
				return -1;
			}
			if (apk_hexdump_parse(APK_BLOB_BUF(file->csum), l)) {
				apk_error("Not a valid checksum");
469 470
				return -1;
			}
471 472 473 474
			break;
		default:
			apk_error("FDB entry '%c' unsupported", field);
			return -1;
475 476 477
		}
	}

478
	return 0;
479 480 481
bad_mode:
	apk_error("FDB bad directory mode entry");
	return -1;
482 483
}

Timo Teräs's avatar
Timo Teräs committed
484
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
485 486
{
	struct apk_package *pkg;
487
	struct apk_db_dir_instance *diri;
488
	struct apk_db_file *file;
489
	struct hlist_node *c1, *c2;
490
	char buf[1024];
491
	int n = 0, r;
492

493
	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
494 495 496
		r = apk_pkg_write_index_entry(pkg, os);
		if (r < 0)
			return r;
497

498 499 500 501 502 503
		hlist_for_each_entry(diri, c1, &pkg->owned_dirs, pkg_dirs_list) {
			n += snprintf(&buf[n], sizeof(buf)-n,
				      "F:%s\n"
				      "M:%d:%d:%o\n",
				      diri->dir->dirname,
				      diri->uid, diri->gid, diri->mode);
504

505
			hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
506
				n += snprintf(&buf[n], sizeof(buf)-n,
507 508 509 510 511 512 513 514
					      "R:%s\n",
					      file->filename);
				if (csum_valid(file->csum)) {
					n += snprintf(&buf[n], sizeof(buf)-n, "Z:");
					n += apk_hexdump_format(sizeof(buf)-n, &buf[n],
								APK_BLOB_BUF(file->csum));
					n += snprintf(&buf[n], sizeof(buf)-n, "\n");
				}
515

516 517 518
				if (os->write(os, buf, n) != n)
					return -1;
				n = 0;
519
			}
520 521 522
			if (n != 0 && os->write(os, buf, n) != n)
				return -1;
			n = 0;
523
		}
Timo Teräs's avatar
Timo Teräs committed
524
		os->write(os, "\n", 1);
525 526 527 528 529 530 531 532 533 534 535
	}

	return 0;
}

struct apk_script_header {
	csum_t csum;
	unsigned int type;
	unsigned int size;
};

Timo Teräs's avatar
Timo Teräs committed
536
static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
537 538 539 540
{
	struct apk_package *pkg;
	struct apk_script *script;
	struct apk_script_header hdr;
541
	struct hlist_node *c2;
542

543
	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
544 545 546 547 548
		hlist_for_each_entry(script, c2, &pkg->scripts, script_list) {
			memcpy(hdr.csum, pkg->csum, sizeof(csum_t));
			hdr.type = script->type;
			hdr.size = script->size;

Timo Teräs's avatar
Timo Teräs committed
549 550 551 552 553
			if (os->write(os, &hdr, sizeof(hdr)) != sizeof(hdr))
				return -1;

			if (os->write(os, script->script, script->size) != script->size)
				return -1;
554 555 556 557 558 559
		}
	}

	return 0;
}

560
static int apk_db_scriptdb_read(struct apk_database *db, struct apk_istream *is)
561 562 563 564
{
	struct apk_package *pkg;
	struct apk_script_header hdr;

565
	while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
566
		pkg = apk_db_get_pkg(db, hdr.csum);
567 568
		if (pkg != NULL)
			apk_pkg_add_script(pkg, is, hdr.type, hdr.size);
569 570 571 572 573
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
574
static int apk_db_read_state(struct apk_database *db, int flags)
575
{
576
	struct apk_istream *is;
577
	struct apk_bstream *bs;
Timo Teräs's avatar
Timo Teräs committed
578
	apk_blob_t blob;
579
	int i;
580 581 582 583 584 585 586 587 588

	/* Read:
	 * 1. installed repository
	 * 2. source repositories
	 * 3. master dependencies
	 * 4. package statuses
	 * 5. files db
	 * 6. script db
	 */
589 590
	fchdir(db->root_fd);

Timo Teräs's avatar
Timo Teräs committed
591 592 593 594 595 596
	if (!(flags & APK_OPENF_NO_WORLD)) {
		blob = apk_blob_from_file("var/lib/apk/world");
		if (APK_BLOB_IS_NULL(blob))
			return -ENOENT;
		apk_deps_parse(db, &db->world, blob);
		free(blob.ptr);
597

Timo Teräs's avatar
Timo Teräs committed
598 599 600
		for (i = 0; i < db->world->num; i++)
			db->world->item[i].name->flags |= APK_NAME_TOPLEVEL;
	}
601

Timo Teräs's avatar
Timo Teräs committed
602
	if (!(flags & APK_OPENF_NO_INSTALLED)) {
603 604 605 606
		bs = apk_bstream_from_file("var/lib/apk/installed");
		if (bs != NULL) {
			apk_db_index_read(db, bs, -1);
			bs->close(bs, NULL);
Timo Teräs's avatar
Timo Teräs committed
607
		}
608 609
	}

Timo Teräs's avatar
Timo Teräs committed
610 611 612 613 614 615
	if (!(flags & APK_OPENF_NO_SCRIPTS)) {
		is = apk_istream_from_file("var/lib/apk/scripts");
		if (is != NULL) {
			apk_db_scriptdb_read(db, is);
			is->close(is);
		}
616 617 618 619 620
	}

	return 0;
}

621 622 623 624 625 626 627 628
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;
}

629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651
static int apk_db_create(struct apk_database *db)
{
	apk_blob_t deps = APK_BLOB_STR("busybox alpine-baselayout "
				       "apk-tools alpine-conf");
	int fd;

	fchdir(db->root_fd);
	mkdir("tmp", 01777);
	mkdir("dev", 0755);
	mknod("dev/null", 0666, makedev(1, 3));
	mkdir("var", 0755);
	mkdir("var/lib", 0755);
	mkdir("var/lib/apk", 0755);

	fd = creat("var/lib/apk/world", 0644);
	if (fd < 0)
		return -errno;
	write(fd, deps.ptr, deps.len);
	close(fd);

	return 0;
}

652 653 654 655
static void handle_alarm(int sig)
{
}

656
int apk_db_open(struct apk_database *db, const char *root, unsigned int flags)
657
{
Natanael Copa's avatar
Natanael Copa committed
658
	const char *apk_repos = getenv("APK_REPOS"), *msg = NULL;
659
	struct apk_repository_url *repo = NULL;
Timo Teräs's avatar
Timo Teräs committed
660 661 662
	struct stat st;
	apk_blob_t blob;
	int r;
663

664 665 666 667
	memset(db, 0, sizeof(*db));
	apk_hash_init(&db->available.names, &pkg_name_hash_ops, 1000);
	apk_hash_init(&db->available.packages, &pkg_info_hash_ops, 4000);
	apk_hash_init(&db->installed.dirs, &dir_hash_ops, 1000);
668
	apk_hash_init(&db->installed.files, &file_hash_ops, 4000);
669
	list_init(&db->installed.packages);
Timo Teräs's avatar
Timo Teräs committed
670
	db->cache_dir = apk_static_cache_dir;
671 672

	if (root != NULL) {
673
		fchdir(apk_cwd_fd);
674 675
		db->root = strdup(root);
		db->root_fd = open(root, O_RDONLY);
676 677 678 679
		if (db->root_fd < 0 && (flags & APK_OPENF_CREATE)) {
			mkdir(db->root, 0755);
			db->root_fd = open(root, O_RDONLY);
		}
680
		if (db->root_fd < 0) {
681 682 683 684 685
			msg = "Unable to open root";
			goto ret_errno;
		}

		fchdir(db->root_fd);
Timo Teräs's avatar
Timo Teräs committed
686 687 688
		if (stat(apk_linked_cache_dir, &st) == 0 && S_ISDIR(st.st_mode))
			db->cache_dir = apk_linked_cache_dir;

689 690 691
		if (flags & APK_OPENF_WRITE) {
			db->lock_fd = open("var/lib/apk/lock",
					   O_CREAT | O_WRONLY, 0400);
692 693 694 695 696 697 698 699 700 701
			if (db->lock_fd < 0 && errno == ENOENT &&
			    (flags & APK_OPENF_CREATE)) {
				r = apk_db_create(db);
				if (r != 0) {
					msg = "Unable to create database";
					goto ret_r;
				}
				db->lock_fd = open("var/lib/apk/lock",
						   O_CREAT | O_WRONLY, 0400);
			}
702 703
			if (db->lock_fd < 0 ||
			    flock(db->lock_fd, LOCK_EX | LOCK_NB) < 0) {
704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721
				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) {
						msg = "Unable to lock database";
						goto ret_errno;
					}

					alarm(0);
					sigaction(SIGALRM, &old_sa, NULL);
				}
722
			}
723 724
		}
	}
725 726 727 728

	blob = APK_BLOB_STR("etc:-etc/init.d");
	apk_blob_for_each_segment(blob, ":", add_protected_path, db);

729
	if (root != NULL) {
Timo Teräs's avatar
Timo Teräs committed
730 731 732
		r = apk_db_read_state(db, flags);
		if (r == -ENOENT && (flags & APK_OPENF_CREATE)) {
			r = apk_db_create(db);
733
			if (r != 0) {
Timo Teräs's avatar
Timo Teräs committed
734
				msg = "Unable to create database";
735 736
				goto ret_r;
			}
Timo Teräs's avatar
Timo Teräs committed
737 738 739 740 741
			r = apk_db_read_state(db, flags);
		}
		if (r != 0) {
			msg = "Unable to read database state";
			goto ret_r;
742 743
		}

Timo Teräs's avatar
Timo Teräs committed
744
		if (!(flags & APK_OPENF_NO_REPOS)) {
745 746 747 748
			if (apk_repos == NULL)
				apk_repos = "/etc/apk/repositories";
			blob = apk_blob_from_file(apk_repos);
			if (!APK_BLOB_IS_NULL(blob)) {
749 750
				apk_blob_for_each_segment(blob, "\n",
							  apk_db_add_repository, db);
751 752
				free(blob.ptr);
			}
753 754 755
		}
	}

Timo Teräs's avatar
Timo Teräs committed
756
	if (!(flags & APK_OPENF_NO_REPOS)) {
757 758
		list_for_each_entry(repo, &apk_repository_list.list, list)
			apk_db_add_repository(db, APK_BLOB_STR(repo->url));
759
	}
760

761
	fchdir(apk_cwd_fd);
762
	return 0;
763 764 765 766

ret_errno:
	r = -errno;
ret_r:
Natanael Copa's avatar
Natanael Copa committed
767 768
	if (msg != NULL)
		apk_error("%s: %s", msg, strerror(-r));
769
	apk_db_close(db);
770
	fchdir(apk_cwd_fd);
771
	return r;
772 773
}

774 775 776 777 778
struct write_ctx {
	struct apk_database *db;
	int fd;
};

779
int apk_db_write_config(struct apk_database *db)
780
{
Timo Teräs's avatar
Timo Teräs committed
781
	struct apk_ostream *os;
782 783

	if (db->root == NULL)
784
		return 0;
785

786 787 788 789 790
	if (db->lock_fd == 0) {
		apk_error("Refusing to write db without write lock!");
		return -1;
	}

791 792
	fchdir(db->root_fd);

793
	os = apk_ostream_to_file("var/lib/apk/world", 0644);
Timo Teräs's avatar
Timo Teräs committed
794
	if (os == NULL)
795
		return -1;
796 797
	apk_deps_write(db->world, os);
	os->write(os, "\n", 1);
Timo Teräs's avatar
Timo Teräs committed
798
	os->close(os);
799

800
	os = apk_ostream_to_file("var/lib/apk/installed.new", 0644);
Timo Teräs's avatar
Timo Teräs committed
801
	if (os == NULL)
802
		return -1;
Timo Teräs's avatar
Timo Teräs committed
803 804
	apk_db_write_fdb(db, os);
	os->close(os);
805

806 807 808
	if (rename("var/lib/apk/installed.new", "var/lib/apk/installed") < 0)
		return -errno;

809
	os = apk_ostream_to_file("var/lib/apk/scripts", 0644);
Timo Teräs's avatar
Timo Teräs committed
810
	if (os == NULL)
811
		return -1;
Timo Teräs's avatar
Timo Teräs committed
812 813
	apk_db_scriptdb_write(db, os);
	os->close(os);
814 815 816 817

	return 0;
}

818
void apk_db_close(struct apk_database *db)
819
{
820 821
	struct apk_package *pkg;
	struct apk_db_dir_instance *diri;
822
	struct hlist_node *dc, *dn;
823 824 825 826 827 828 829 830
	int i;

	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
		hlist_for_each_entry_safe(diri, dc, dn, &pkg->owned_dirs, pkg_dirs_list) {
			apk_db_diri_free(db, diri);
		}
	}

831
	for (i = 0; i < db->num_repos; i++) {
832
		free(db->repos[i].url);
833
	}
834 835 836 837 838 839 840
	if (db->protected_paths) {
		for (i = 0; i < db->protected_paths->num; i++)
			free(db->protected_paths->item[i]);
		free(db->protected_paths);
	}
	if (db->world)
		free(db->world);
841

842 843
	apk_hash_free(&db->available.names);
	apk_hash_free(&db->available.packages);
844
	apk_hash_free(&db->installed.files);
845
	apk_hash_free(&db->installed.dirs);
846

847
	if (db->root_fd)
848
		close(db->root_fd);
849 850 851
	if (db->lock_fd)
		close(db->lock_fd);
	if (db->root != NULL)
852 853 854
		free(db->root);
}

Timo Teräs's avatar
Timo Teräs committed
855 856 857 858 859
int apk_db_cache_active(struct apk_database *db)
{
	return db->cache_dir != apk_static_cache_dir;
}

860 861
struct apk_package *apk_db_get_pkg(struct apk_database *db, csum_t sum)
{
862 863
	return apk_hash_get(&db->available.packages,
			    APK_BLOB_PTR_LEN((void*) sum, sizeof(csum_t)));
864 865
}

866 867 868
struct apk_package *apk_db_get_file_owner(struct apk_database *db,
					  apk_blob_t filename)
{
869
	struct apk_db_file *dbf;
870
	struct apk_db_file_hash_key key;
871

872 873
	if (filename.len && filename.ptr[0] == '/')
		filename.len--, filename.ptr++;
874

875 876 877 878 879
	if (!apk_blob_rsplit(filename, '/', &key.dirname, &key.filename))
		return NULL;

	dbf = (struct apk_db_file *) apk_hash_get(&db->installed.files,
						  APK_BLOB_BUF(&key));
880
	if (dbf == NULL)
881 882
		return NULL;

883
	return dbf->diri->pkg;
884 885
}

886
struct apk_package *apk_db_pkg_add_file(struct apk_database *db, const char *file)
887 888 889 890
{
	struct apk_package *info;

	info = apk_pkg_read(db, file);
891
	if (info != NULL)
892
		info = apk_db_pkg_add(db, info);
893
	return info;
894 895
}

896 897 898 899 900
struct index_write_ctx {
	struct apk_ostream *os;
	int count;
};

901 902
static int write_index_entry(apk_hash_item item, void *ctx)
{
903 904
	struct index_write_ctx *iwctx = (struct index_write_ctx *) ctx;
	struct apk_package *pkg = (struct apk_package *) item;
905
	int r;
906

907 908 909
	if (pkg->repos != 0)
		return 0;

910 911 912
	r = apk_pkg_write_index_entry(pkg, iwctx->os);
	if (r < 0)
		return r;
Timo Teräs's avatar
Timo Teräs committed
913

914
	if (iwctx->os->write(iwctx->os, "\n", 1) != 1)
Timo Teräs's avatar
Timo Teräs committed
915
		return -1;
916

917
	iwctx->count++;
918 919 920
	return 0;
}

921
int apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
922
{
923 924 925 926 927
	struct index_write_ctx ctx = { os, 0 };

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

	return ctx.count;
928 929
}

Timo Teräs's avatar
Timo Teräs committed
930 931 932
static void apk_db_cache_get_name(char *buf, size_t bufsz,
				  struct apk_database *db, csum_t csum,
				  const char *file, int temp)
933
{
Timo Teräs's avatar
Timo Teräs committed
934
	char csumstr[sizeof(csum_t)*2+1];
935

Timo Teräs's avatar
Timo Teräs committed
936 937
	apk_hexdump_format(sizeof(csumstr), csumstr,
			   APK_BLOB_PTR_LEN((void *)csum, sizeof(csum_t)));
Timo Teräs's avatar
Timo Teräs committed
938 939
	snprintf(buf, bufsz, "%s/%s/%s.%s%s",
		 db->root, db->cache_dir, csumstr, file, temp ? ".new" : "");
940 941
}

Timo Teräs's avatar
Timo Teräs committed
942 943
static struct apk_bstream *apk_db_cache_open(struct apk_database *db,
					     csum_t csum, const char *file)
944 945 946 947
{
	char tmp[256];

	if (db->root == NULL)
Timo Teräs's avatar
Timo Teräs committed
948
		return NULL;
949

Timo Teräs's avatar
Timo Teräs committed
950 951
	apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, file, FALSE);
	return apk_bstream_from_file(tmp);
952 953 954 955 956 957 958 959 960 961 962 963
}

static struct apk_bstream *apk_repository_file_open(struct apk_repository *repo,
						    const char *file)
{
	char tmp[256];

	snprintf(tmp, sizeof(tmp), "%s/%s", repo->url, file);

	return apk_bstream_from_url(tmp);
}

Timo Teräs's avatar
Timo Teräs committed
964 965
int apk_cache_download(struct apk_database *db, csum_t csum,
		       const char *url, const char *item)
966 967
{
	char tmp[256], tmp2[256];
968
	int r;
969

Timo Teräs's avatar
Timo Teräs committed
970 971
	snprintf(tmp, sizeof(tmp), "%s/%s", url, item);
	apk_message("fetch %s", tmp);
972

Timo Teräs's avatar
Timo Teräs committed
973 974
	if (apk_flags & APK_SIMULATE)
		return 0;
Timo Teräs's avatar
Timo Teräs committed
975

Timo Teräs's avatar
Timo Teräs committed
976
	apk_db_cache_get_name(tmp2, sizeof(tmp2), db, csum, item, TRUE);
977 978 979 980
	r = apk_url_download(tmp, tmp2);
	if (r < 0)
		return r;

Timo Teräs's avatar
Timo Teräs committed
981
	apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, item, FALSE);
982 983 984 985 986 987
	if (rename(tmp2, tmp) < 0)
		return -errno;

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
int apk_cache_exists(struct apk_database *db, csum_t csum, const char *item)
{
	char tmp[256];

	if (db->root == NULL)
		return 0;

	apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, item, FALSE);
	return access(tmp, R_OK | W_OK) == 0;
}

int apk_repository_update(struct apk_database *db, struct apk_repository *repo)
{
	if (!csum_valid(repo->url_csum))
		return 0;

	return apk_cache_download(db, repo->url_csum, repo->url, apk_index_gz);
}

1007 1008 1009
int apk_db_add_repository(apk_database_t _db, apk_blob_t repository)
{
	struct apk_database *db = _db.db;
Timo Teräs's avatar
Timo Teräs committed
1010 1011
	struct apk_bstream *bs = NULL;
	struct apk_repository *repo;
1012
	int r, n = 1;
1013

1014
	if (repository.ptr == NULL || *repository.ptr == '\0'
1015 1016 1017
			|| *repository.ptr == '#')
		return 0;

1018 1019 1020 1021
	if (db->num_repos >= APK_MAX_REPOS)
		return -1;

	r = db->num_repos++;
Timo Teräs's avatar
Timo Teräs committed
1022 1023 1024

	repo = &db->repos[r];
	*repo = (struct apk_repository) {
1025
		.url = apk_blob_cstr(repository),
1026 1027
	};

Timo Teräs's avatar
Timo Teräs committed
1028
	if (apk_url_local_file(repo->url) == NULL) {
Timo Teräs's avatar
Timo Teräs committed
1029
		csum_blob(repository, repo->url_csum);
1030

1031 1032 1033
		if (apk_flags & APK_UPDATE_CACHE)
			n = apk_repository_update(db, repo);

Timo Teräs's avatar
Timo Teräs committed
1034 1035
		bs = apk_db_cache_open(db, repo->url_csum, apk_index_gz);
		if (bs == NULL) {
1036 1037
			if (n == 1)
				n = apk_repository_update(db, repo);
1038 1039
			if (n < 0)
				return n;
Timo Teräs's avatar
Timo Teräs committed
1040 1041
			bs = apk_db_cache_open(db, repo->url_csum,
					       apk_index_gz);
1042 1043
		}
	} else {
Timo Teräs's avatar
Timo Teräs committed
1044
		bs = apk_repository_file_open(repo, apk_index_gz);
1045
	}
1046 1047
	bs = apk_bstream_from_istream(apk_bstream_gunzip(bs, TRUE));
	if (bs == NULL) {
Timo Teräs's avatar
Timo Teräs committed
1048
		apk_warning("Failed to open index for %s", repo->url);
1049 1050
		return -1;
	}
1051 1052
	apk_db_index_read(db, bs, r);
	bs->close(bs, NULL);
1053 1054 1055 1056

	return 0;
}

1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
static void extract_cb(void *_ctx, size_t progress)
{
	struct install_ctx *ctx = (struct install_ctx *) _ctx;

	if (ctx->cb) {
		size_t size = ctx->installed_size;

		size += muldiv(progress, ctx->current_file_size, APK_PROGRESS_SCALE);
		if (size > ctx->pkg->installed_size)
			size = ctx->pkg->installed_size;

		ctx->cb(ctx->cb_ctx, muldiv(APK_PROGRESS_SCALE, size, ctx->pkg->installed_size));
	}
}

1072
static int apk_db_install_archive_entry(void *_ctx,
1073
					const struct apk_file_info *ae,
1074
					struct apk_istream *is)
1075
{
1076
	struct install_ctx *ctx = (struct install_ctx *) _ctx;
1077
	struct apk_database *db = ctx->db;
1078 1079 1080
	struct apk_package *pkg = ctx->pkg, *opkg;
	apk_blob_t name = APK_BLOB_STR(ae->name), bdir, bfile;
	struct apk_db_dir_instance *diri = ctx->diri;
1081
	struct apk_db_file *file;
1082 1083
	struct apk_file_info fi;
	char alt_name[PATH_MAX];
1084
	const char *p;
Timo Teräs's avatar
Timo Teräs committed
1085
	int r = 0, type = APK_SCRIPT_INVALID;
1086

Timo Teräs's avatar
Timo Teräs committed
1087 1088 1089
	/* Package metainfo and script processing */
	if (ae->name[0] == '.') {
		/* APK 2.0 format */
1090 1091 1092 1093 1094 1095
		if (strcmp(ae->name, ".INSTALL") == 0)
			type = APK_SCRIPT_GENERIC;
		else
			type = apk_script_type(&ae->name[1]);

		if (type == APK_SCRIPT_INVALID)
Timo Teräs's avatar
Timo Teräs committed
1096 1097 1098
			return 0;
	} else if (strncmp(ae->name, "var/db/apk/", 11) == 0) {
		/* APK 1.0 format */
1099 1100 1101 1102 1103 1104 1105 1106 1107
		p = &ae->name[11];
		if (strncmp(p, pkg->name->name, strlen(pkg->name->name)) != 0)
			return 0;
		p += strlen(pkg->name->name) + 1;
		if (strncmp(p, pkg->version, strlen(pkg->version)) != 0)
			return 0;
		p += strlen(pkg->version) + 1;

		type = apk_script_type(p);
1108
		if (type == APK_SCRIPT_INVALID)
1109
			return 0;
Timo Teräs's avatar
Timo Teräs committed
1110
	}
1111

Timo Teräs's avatar
Timo Teräs committed
1112 1113
	/* Handle script */
	if (type != APK_SCRIPT_INVALID) {
1114
		apk_pkg_add_script(pkg, is, type, ae->size);
1115

Timo Teräs's avatar
Timo Teräs committed
1116 1117
		if (type == APK_SCRIPT_GENERIC ||
		    type == ctx->script) {
1118
			r = apk_pkg_run_script(pkg, db->root_fd, ctx->script);
1119 1120 1121 1122 1123 1124 1125 1126
			if (r != 0)
				apk_error("%s-%s: Failed to execute pre-install/upgrade script",
					  pkg->name->name, pkg->version);
		}

		return r;
	}

1127 1128 1129 1130 1131 1132 1133 1134
	/* Show progress */
	if (ctx->cb) {
		size_t size = ctx->installed_size;
		if (size > pkg->installed_size)
			size = pkg->installed_size;
		ctx->cb(ctx->cb_ctx, muldiv(APK_PROGRESS_SCALE, size, pkg->installed_size));
	}

Timo Teräs's avatar
Timo Teräs committed
1135
	/* Installable entry */
1136
	ctx->current_file_size = apk_calc_installed_size(ae->size);
1137
	if (!S_ISDIR(ae->mode)) {