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
}

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
static struct apk_db_dir_instance *find_diri(struct apk_installed_package *ipkg,
					     apk_blob_t dirname,
					     struct apk_db_dir_instance *curdiri,
					     struct hlist_node ***tail)
{
	struct hlist_node *n;
	struct apk_db_dir_instance *diri;

	if (curdiri != NULL &&
	    apk_blob_compare(APK_BLOB_PTR_LEN(curdiri->dir->name,
					      curdiri->dir->namelen),
			     dirname) == 0)
		return curdiri;

	hlist_for_each_entry(diri, n, &ipkg->owned_dirs, pkg_dirs_list) {
		if (apk_blob_compare(APK_BLOB_PTR_LEN(diri->dir->name,
						      diri->dir->namelen), dirname) == 0) {
			if (tail != NULL)
				*tail = hlist_tail_ptr(&diri->owned_files);
			return diri;
		}
	}
	return NULL;
}

Timo Teräs's avatar
Timo Teräs committed
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
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 {
536 537
			diri = find_diri(ipkg, bdir, diri, &file_diri_node);
			if (diri == NULL) {
538 539
				diri = apk_db_diri_new(db, pkg, bdir, &diri_node);
				file_diri_node = &diri->owned_files.first;
540
			}
Timo Teräs's avatar
Timo Teräs committed
541 542 543 544 545 546 547
			file = apk_db_file_get(db, diri, bfile, &file_diri_node);
		}
	}

	return 0;
}

548
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
549 550
{
	struct apk_package *pkg = NULL;
551
	struct apk_installed_package *ipkg = NULL;
552
	struct apk_db_dir_instance *diri = NULL;
553
	struct apk_db_file *file = NULL;
554 555
	struct hlist_node **diri_node = NULL;
	struct hlist_node **file_diri_node = NULL;
556 557
	apk_blob_t token = APK_BLOB_STR("\n"), l;
	int field;
558

559 560 561 562
	while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
		if (l.len < 2 || l.ptr[1] != ':') {
			if (pkg == NULL)
				continue;
563

564
			if (repo >= 0)
565
				pkg->repos |= BIT(repo);
566

567
			if (apk_db_pkg_add(db, pkg) == NULL) {
568 569
				apk_error("Installed database load failed");
				return -1;
570
			}
571
			pkg = NULL;
572
			ipkg = NULL;
573 574
			continue;
		}
575

576 577 578 579 580 581 582 583 584 585
		/* 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;
586 587 588 589 590

			if (repo == -1) {
				ipkg = apk_pkg_install(db, pkg);
				diri_node = hlist_tail_ptr(&ipkg->owned_dirs);
			}
591
		}
592

593 594 595 596 597 598 599 600
		/* 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;
		}
601

602 603 604 605 606
		/* Check FDB special entries */
		switch (field) {
		case 'F':
			if (pkg->name == NULL) {
				apk_error("FDB directory entry before package entry");
607 608
				return -1;
			}
609 610 611 612 613 614 615 616
			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;
			}
617 618 619 620 621
			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);
622 623 624 625 626 627
			break;
		case 'R':
			if (diri == NULL) {
				apk_error("FDB file entry before directory entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
628
			file = apk_db_file_get(db, diri, l, &file_diri_node);
629 630 631 632 633 634
			break;
		case 'Z':
			if (file == NULL) {
				apk_error("FDB checksum entry before file entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
635
			apk_blob_pull_csum(&l, &file->csum);
636 637 638 639
			break;
		default:
			apk_error("FDB entry '%c' unsupported", field);
			return -1;
640
		}
641 642 643 644
		if (APK_BLOB_IS_NULL(l)) {
			apk_error("FDB format error in entry '%c'", field);
			return -1;
		}
645 646
	}

647
	return 0;
648 649
}

Timo Teräs's avatar
Timo Teräs committed
650
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
651
{
652
	struct apk_installed_package *ipkg;
653
	struct apk_package *pkg;
654
	struct apk_db_dir_instance *diri;
655
	struct apk_db_file *file;
656
	struct hlist_node *c1, *c2;
657
	char buf[1024];
658 659
	apk_blob_t bbuf = APK_BLOB_BUF(buf);
	int r;
660

661 662
	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		pkg = ipkg->pkg;
663 664 665
		r = apk_pkg_write_index_entry(pkg, os);
		if (r < 0)
			return r;
666

667
		hlist_for_each_entry(diri, c1, &ipkg->owned_dirs, pkg_dirs_list) {
668 669 670 671 672 673 674 675 676
			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"));
677

678
			hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
679 680
				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
681
				if (file->csum.type != APK_CHECKSUM_NONE) {
682
					apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nZ:"));
Timo Teräs's avatar
Timo Teräs committed
683
					apk_blob_push_csum(&bbuf, &file->csum);
684
				}
685
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
686

687
				if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
688
					return -1;
689
				bbuf = APK_BLOB_BUF(buf);
690
			}
691
			if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
692
				return -1;
693
			bbuf = APK_BLOB_BUF(buf);
694
		}
Timo Teräs's avatar
Timo Teräs committed
695
		os->write(os, "\n", 1);
696 697 698 699 700
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
701
static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
702
{
703
	struct apk_installed_package *ipkg;
704
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
705 706 707
	struct apk_file_info fi;
	char filename[256];
	apk_blob_t bfn;
708
	int r, i;
709
	time_t now = time(NULL);
710 711 712 713 714 715 716

	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;
717

Timo Teräs's avatar
Timo Teräs committed
718 719
			fi = (struct apk_file_info) {
				.name = filename,
720
				.size = ipkg->script[i].len,
Timo Teräs's avatar
Timo Teräs committed
721
				.mode = 0755 | S_IFREG,
722
				.mtime = now,
Timo Teräs's avatar
Timo Teräs committed
723 724 725 726 727 728 729 730 731 732
			};
			/* 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("."));
733
			apk_blob_push_blob(&bfn, APK_BLOB_STR(apk_script_types[i]));
Timo Teräs's avatar
Timo Teräs committed
734 735
			apk_blob_push_blob(&bfn, APK_BLOB_PTR_LEN("", 1));

736
			r = apk_tar_write_entry(os, &fi, ipkg->script[i].ptr);
Timo Teräs's avatar
Timo Teräs committed
737 738
			if (r < 0)
				return r;
739 740 741
		}
	}

742
	return apk_tar_write_entry(os, NULL, NULL);
743 744
}

Timo Teräs's avatar
Timo Teräs committed
745
static int apk_db_scriptdb_read_v1(struct apk_database *db, struct apk_istream *is)
746 747
{
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
748 749 750 751 752 753
	struct {
		unsigned char md5sum[16];
		unsigned int type;
		unsigned int size;
	} hdr;
	struct apk_checksum csum;
754

755
	while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
Timo Teräs's avatar
Timo Teräs committed
756 757 758 759
		memcpy(csum.data, hdr.md5sum, sizeof(hdr.md5sum));
		csum.type = APK_CHECKSUM_MD5;

		pkg = apk_db_get_pkg(db, &csum);
760 761
		if (pkg != NULL && pkg->ipkg != NULL)
			apk_ipkg_add_script(pkg->ipkg, is, hdr.type, hdr.size);
Timo Teräs's avatar
Timo Teräs committed
762 763
		else
			apk_istream_skip(is, hdr.size);
764 765 766 767 768
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802
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);
803 804
	if (pkg != NULL && pkg->ipkg != NULL)
		apk_ipkg_add_script(pkg->ipkg, is, type, ae->size);
Timo Teräs's avatar
Timo Teräs committed
805 806 807 808

	return 0;
}

809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829
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);
830 831
		os->write(os, buf, bfn.ptr - buf);

832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
		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
863
static int apk_db_read_state(struct apk_database *db, int flags)
864
{
865
	struct apk_istream *is;
866
	struct apk_bstream *bs;
Timo Teräs's avatar
Timo Teräs committed
867
	apk_blob_t blob;
868
	int i;
869 870 871 872 873 874 875 876 877

	/* 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
878
	if (!(flags & APK_OPENF_NO_WORLD)) {
879
		blob = apk_blob_from_file(db->root_fd, "var/lib/apk/world");
Timo Teräs's avatar
Timo Teräs committed
880 881 882 883
		if (APK_BLOB_IS_NULL(blob))
			return -ENOENT;
		apk_deps_parse(db, &db->world, blob);
		free(blob.ptr);
884

Timo Teräs's avatar
Timo Teräs committed
885
		for (i = 0; db->world != NULL && i < db->world->num; i++)
Timo Teräs's avatar
Timo Teräs committed
886 887
			db->world->item[i].name->flags |= APK_NAME_TOPLEVEL;
	}
888

Timo Teräs's avatar
Timo Teräs committed
889
	if (!(flags & APK_OPENF_NO_INSTALLED)) {
890
		bs = apk_bstream_from_file(db->root_fd, "var/lib/apk/installed");
891 892 893
		if (bs != NULL) {
			apk_db_index_read(db, bs, -1);
			bs->close(bs, NULL);
Timo Teräs's avatar
Timo Teräs committed
894
		}
895

896 897 898 899 900 901
		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);
			}
902
		}
903 904 905 906 907 908

		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);
		}
909 910
	}

Timo Teräs's avatar
Timo Teräs committed
911
	if (!(flags & APK_OPENF_NO_SCRIPTS)) {
912
		is = apk_istream_from_file(db->root_fd, "var/lib/apk/scripts.tar");
Timo Teräs's avatar
Timo Teräs committed
913
		if (is != NULL) {
914 915
			apk_tar_parse(is, apk_read_script_archive_entry, db,
				      FALSE);
Timo Teräs's avatar
Timo Teräs committed
916
		} else {
917
			is = apk_istream_from_file(db->root_fd, "var/lib/apk/scripts");
Timo Teräs's avatar
Timo Teräs committed
918 919
			if (is != NULL)
				apk_db_scriptdb_read_v1(db, is);
Timo Teräs's avatar
Timo Teräs committed
920
		}
Timo Teräs's avatar
Timo Teräs committed
921 922
		if (is != NULL)
			is->close(is);
923 924 925 926 927
	}

	return 0;
}

928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
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 };
957
	struct apk_installed_package *ipkg;
958 959 960 961 962 963 964 965
	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 */
966 967 968 969
	os = apk_ostream_to_file(db->cache_fd,
				 "installed",
				 "installed.new",
				 0644);
970 971 972
	if (os == NULL)
		return -1;

973
	ctx.os = os;
974 975
	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		if (ipkg->pkg->repos != 0)
976
			continue;
977
		r = write_index_entry(ipkg->pkg, &ctx);
978 979 980
		if (r != 0)
			return r;
	}
981 982 983
	r = os->close(os);
	if (r < 0)
		return r;
984 985 986 987 988 989 990 991 992 993 994 995 996

	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.<