database.c 68 KB
Newer Older
1 2 3
/* database.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
4
 * Copyright (C) 2008-2011 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 <mntent.h>
16
#include <limits.h>
17 18 19
#include <unistd.h>
#include <malloc.h>
#include <string.h>
20
#include <stdlib.h>
21
#include <signal.h>
22
#include <fnmatch.h>
Timo Teräs's avatar
Timo Teräs committed
23
#include <sys/vfs.h>
24
#include <sys/file.h>
25
#include <sys/wait.h>
Natanael Copa's avatar
Natanael Copa committed
26
#include <sys/stat.h>
27
#include <sys/statvfs.h>
28 29 30 31

#include "apk_defines.h"
#include "apk_package.h"
#include "apk_database.h"
32
#include "apk_applet.h"
33
#include "apk_archive.h"
Natanael Copa's avatar
Natanael Copa committed
34 35
#include "apk_print.h"

Timo Teräs's avatar
Timo Teräs committed
36 37 38 39 40
static const apk_spn_match_def apk_spn_repo_separators = {
	[4] = (1<<0) /* */,
	[7] = (1<<2) /*:*/,
};

41 42 43 44 45
enum {
	APK_DISALLOW_RMDIR = 0,
	APK_ALLOW_RMDIR = 1
};

Natanael Copa's avatar
Natanael Copa committed
46 47
int apk_verbosity = 1;
unsigned int apk_flags = 0;
48

49
const char * const apkindex_tar_gz = "APKINDEX.tar.gz";
Timo Teräs's avatar
Timo Teräs committed
50
static const char * const apk_static_cache_dir = "var/cache/apk";
Timo Teräs's avatar
Timo Teräs committed
51
static const char * const apk_linked_cache_dir = "etc/apk/cache";
Timo Teräs's avatar
Timo Teräs committed
52

Timo Teräs's avatar
Timo Teräs committed
53
static const char * const apk_lock_file = "var/lock/apkdb";
Timo Teräs's avatar
Timo Teräs committed
54

Timo Teräs's avatar
Timo Teräs committed
55 56 57
static const char * const apk_world_file = "etc/apk/world";
static const char * const apk_world_file_tmp = "etc/apk/world.new";
static const char * const apk_world_file_old = "var/lib/apk/world";
58
static const char * const apk_arch_file = "etc/apk/arch";
Timo Teräs's avatar
Timo Teräs committed
59 60 61 62 63 64 65 66 67 68 69 70 71

static const char * const apk_scripts_file = "lib/apk/db/scripts.tar";
static const char * const apk_scripts_file_tmp = "lib/apk/db/scripts.tar.new";
static const char * const apk_scripts_file_old = "var/lib/apk/scripts.tar";

static const char * const apk_triggers_file = "lib/apk/db/triggers";
static const char * const apk_triggers_file_tmp = "lib/apk/db/triggers.new";
static const char * const apk_triggers_file_old = "var/lib/apk/triggers";

static const char * const apk_installed_file = "lib/apk/db/installed";
static const char * const apk_installed_file_tmp = "lib/apk/db/installed.new";
static const char * const apk_installed_file_old = "var/lib/apk/installed";

72 73 74
struct install_ctx {
	struct apk_database *db;
	struct apk_package *pkg;
75
	struct apk_installed_package *ipkg;
76 77

	int script;
78
	char **script_args;
79
	int script_pending : 1;
80

81
	struct apk_db_dir_instance *diri;
Timo Teräs's avatar
Timo Teräs committed
82
	struct apk_checksum data_csum;
83
	struct apk_sign_ctx sctx;
84

85 86 87 88 89
	apk_progress_cb cb;
	void *cb_ctx;
	size_t installed_size;
	size_t current_file_size;

90 91
	struct hlist_node **diri_node;
	struct hlist_node **file_diri_node;
92 93
};

94
static apk_blob_t pkg_name_get_key(apk_hash_item item)
95
{
96
	return APK_BLOB_STR(((struct apk_name *) item)->name);
97 98
}

99 100 101
static void pkg_name_free(struct apk_name *name)
{
	free(name->name);
102
	apk_provider_array_free(&name->providers);
Timo Teräs's avatar
Timo Teräs committed
103
	apk_name_array_free(&name->rdepends);
Timo Teräs's avatar
Timo Teräs committed
104
	apk_name_array_free(&name->rinstall_if);
105 106 107
	free(name);
}

108 109 110
static const struct apk_hash_ops pkg_name_hash_ops = {
	.node_offset = offsetof(struct apk_name, hash_node),
	.get_key = pkg_name_get_key,
111 112
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
113
	.delete_item = (apk_hash_delete_f) pkg_name_free,
114 115
};

116
static apk_blob_t pkg_info_get_key(apk_hash_item item)
117
{
Timo Teräs's avatar
Timo Teräs committed
118
	return APK_BLOB_CSUM(((struct apk_package *) item)->csum);
119 120
}

121
static unsigned long csum_hash(apk_blob_t csum)
122
{
123 124
	/* Checksum's highest bits have the most "randomness", use that
	 * directly as hash */
125
	return *(unsigned long *) csum.ptr;
126 127 128 129 130
}

static const struct apk_hash_ops pkg_info_hash_ops = {
	.node_offset = offsetof(struct apk_package, hash_node),
	.get_key = pkg_info_get_key,
131 132
	.hash_key = csum_hash,
	.compare = apk_blob_compare,
133 134 135
	.delete_item = (apk_hash_delete_f) apk_pkg_free,
};

136
static apk_blob_t apk_db_dir_get_key(apk_hash_item item)
137
{
Timo Teräs's avatar
Timo Teräs committed
138 139
	struct apk_db_dir *dir = (struct apk_db_dir *) item;
	return APK_BLOB_PTR_LEN(dir->name, dir->namelen);
140 141 142 143 144
}

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,
145 146
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
147 148 149
	.delete_item = (apk_hash_delete_f) free,
};

150 151 152 153 154 155
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)
156
{
157 158
	struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;

Timo Teräs's avatar
Timo Teräs committed
159
	return apk_blob_hash_seed(key->filename, apk_blob_hash(key->dirname));
160 161 162 163 164 165
}

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
166 167
	return apk_blob_hash_seed(APK_BLOB_PTR_LEN(dbf->name, dbf->namelen),
				  dbf->diri->dir->hash);
168 169 170 171 172 173
}

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
174
	struct apk_db_dir *dir = dbf->diri->dir;
175 176
	int r;

Timo Teräs's avatar
Timo Teräs committed
177 178
	r = apk_blob_compare(key->filename,
			     APK_BLOB_PTR_LEN(dbf->name, dbf->namelen));
179 180 181
	if (r != 0)
		return r;

Timo Teräs's avatar
Timo Teräs committed
182 183 184
	r = apk_blob_compare(key->dirname,
			     APK_BLOB_PTR_LEN(dir->name, dir->namelen));
	return r;
185 186 187 188
}

static const struct apk_hash_ops file_hash_ops = {
	.node_offset = offsetof(struct apk_db_file, hash_node),
189 190 191
	.hash_key = apk_db_file_hash_key,
	.hash_item = apk_db_file_hash_item,
	.compare_item = apk_db_file_compare_item,
192 193 194
	.delete_item = (apk_hash_delete_f) free,
};

Timo Teräs's avatar
Timo Teräs committed
195 196 197 198 199
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);
}

200
struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
201 202
{
	struct apk_name *pn;
203
	unsigned long hash = apk_hash_from_key(&db->available.names, name);
204

205
	pn = (struct apk_name *) apk_hash_get_hashed(&db->available.names, name, hash);
206 207 208 209 210 211 212
	if (pn != NULL)
		return pn;

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

213
	pn->name = apk_blob_cstr(name);
214
	apk_provider_array_init(&pn->providers);
Timo Teräs's avatar
Timo Teräs committed
215
	apk_name_array_init(&pn->rdepends);
Timo Teräs's avatar
Timo Teräs committed
216
	apk_name_array_init(&pn->rinstall_if);
217
	apk_hash_insert_hashed(&db->available.names, pn, hash);
218 219 220 221

	return pn;
}

222 223
static void apk_db_dir_mkdir(struct apk_database *db, struct apk_db_dir *dir)
{
224 225 226 227 228 229 230
	if (apk_flags & APK_SIMULATE)
		return;

	/* Don't mess with root, as no package provides it directly */
	if (dir->namelen == 0)
		return;

231 232 233 234 235 236 237 238 239 240 241 242
	if ((dir->refs == 1) ||
	    (fchmodat(db->root_fd, dir->name, dir->mode, AT_SYMLINK_NOFOLLOW) != 0 &&
	     errno == ENOENT))
		if ((mkdirat(db->root_fd, dir->name, dir->mode) != 0 &&
		     errno == EEXIST))
			if (fchmodat(db->root_fd, dir->name, dir->mode, AT_SYMLINK_NOFOLLOW) != 0)
				;

	if (fchownat(db->root_fd, dir->name, dir->uid, dir->gid, 0) != 0)
		;
}

243 244
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir,
			     int allow_rmdir)
245 246
{
	dir->refs--;
247 248
	if (dir->refs > 0) {
		if (allow_rmdir) {
249
			dir->recalc_mode = 1;
250 251 252
			dir->mode = 0;
			dir->uid = (uid_t) -1;
			dir->gid = (gid_t) -1;
253
		}
254
		return;
255 256
	}

257
	db->installed.stats.dirs--;
258 259

	if (allow_rmdir) {
260 261
		/* The final instance of this directory was removed,
		 * so this directory gets deleted in reality too. */
262
		dir->recalc_mode = 0;
263 264 265 266
		dir->mode = 0;
		dir->uid = (uid_t) -1;
		dir->gid = (gid_t) -1;

267
		unlinkat(db->root_fd, dir->name, AT_REMOVEDIR);
268
	} else if (dir->recalc_mode) {
269 270
		/* Directory permissions need a reset. */
		apk_db_dir_mkdir(db, dir);
271
	}
272 273

	if (dir->parent != NULL)
274
		apk_db_dir_unref(db, dir->parent, allow_rmdir);
275 276
}

277
static struct apk_db_dir *apk_db_dir_ref(struct apk_db_dir *dir)
278 279 280 281 282
{
	dir->refs++;
	return dir;
}

283 284
struct apk_db_dir *apk_db_dir_query(struct apk_database *db,
				    apk_blob_t name)
285 286 287 288
{
	return (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
}

289
struct apk_db_dir *apk_db_dir_get(struct apk_database *db, apk_blob_t name)
290 291
{
	struct apk_db_dir *dir;
292
	struct apk_protected_path_array *ppaths;
293
	apk_blob_t bparent;
294
	unsigned long hash = apk_hash_from_key(&db->installed.dirs, name);
295
	char *relative_name;
296
	int i;
297

298
	if (name.len && name.ptr[name.len-1] == '/')
299 300
		name.len--;

301
	dir = (struct apk_db_dir *) apk_hash_get_hashed(&db->installed.dirs, name, hash);
302
	if (dir != NULL)
303
		return apk_db_dir_ref(dir);
304

305
	db->installed.stats.dirs++;
306 307
	dir = malloc(sizeof(*dir) + name.len + 1);
	memset(dir, 0, sizeof(*dir));
308
	dir->refs = 1;
309 310
	dir->uid = (uid_t) -1;
	dir->gid = (gid_t) -1;
311
	dir->rooted_name[0] = '/';
Timo Teräs's avatar
Timo Teräs committed
312 313 314 315
	memcpy(dir->name, name.ptr, name.len);
	dir->name[name.len] = 0;
	dir->namelen = name.len;
	dir->hash = hash;
316
	apk_protected_path_array_init(&dir->protected_paths);
317
	apk_hash_insert_hashed(&db->installed.dirs, dir, hash);
318

319
	if (name.len == 0) {
320
		dir->parent = NULL;
321 322 323
		dir->has_protected_children = 1;
		ppaths = NULL;
	} else if (apk_blob_rsplit(name, '/', &bparent, NULL)) {
324
		dir->parent = apk_db_dir_get(db, bparent);
325 326 327 328 329
		dir->protected = dir->parent->protected;
		dir->has_protected_children = dir->protected;
		dir->symlinks_only = dir->parent->symlinks_only;
		ppaths = dir->parent->protected_paths;
	} else {
330
		dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
331 332
		ppaths = db->protected_paths;
	}
333

334 335
	if (ppaths == NULL)
		return dir;
336

337 338 339 340
	relative_name = strrchr(dir->rooted_name, '/') + 1;
	for (i = 0; i < ppaths->num; i++) {
		struct apk_protected_path *ppath = &ppaths->item[i];
		char *slash;
341

342 343 344 345 346
		slash = strchr(ppath->relative_pattern, '/');
		if (slash != NULL) {
			*slash = 0;
			if (fnmatch(ppath->relative_pattern, relative_name, FNM_PATHNAME) != 0) {
				*slash = '/';
347 348
				continue;
			}
349 350 351 352 353 354 355 356 357 358
			*slash = '/';

			*apk_protected_path_array_add(&dir->protected_paths) = (struct apk_protected_path) {
				.relative_pattern = slash + 1,
				.protected = ppath->protected,
				.symlinks_only = ppath->symlinks_only,
			};
		} else {
			if (fnmatch(ppath->relative_pattern, relative_name, FNM_PATHNAME) != 0)
				continue;
359

360 361 362
			dir->protected = ppath->protected;
			dir->symlinks_only = ppath->symlinks_only;
		}
363
		dir->has_protected_children |= ppath->protected;
364 365
	}

366 367 368
	return dir;
}

369 370 371
static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
						   struct apk_package *pkg,
						   apk_blob_t name,
372
						   struct hlist_node ***after)
373 374 375 376
{
	struct apk_db_dir_instance *diri;

	diri = calloc(1, sizeof(struct apk_db_dir_instance));
377
	if (diri != NULL) {
378 379
		hlist_add_after(&diri->pkg_dirs_list, *after);
		*after = &diri->pkg_dirs_list.next;
380
		diri->dir = apk_db_dir_get(db, name);
381 382
		diri->pkg = pkg;
	}
383 384 385 386

	return diri;
}

387 388 389 390
static void apk_db_dir_apply_diri_permissions(struct apk_db_dir_instance *diri)
{
	struct apk_db_dir *dir = diri->dir;

391 392
	if (diri->uid < dir->uid ||
	    (diri->uid == dir->uid && diri->gid < dir->gid)) {
393 394
		dir->uid = diri->uid;
		dir->gid = diri->gid;
395 396 397
		dir->mode = diri->mode;
	} else if (diri->uid == dir->uid && diri->gid == dir->gid) {
		dir->mode &= diri->mode;
398 399 400
	}
}

401 402 403
static void apk_db_diri_set(struct apk_db_dir_instance *diri, mode_t mode,
			    uid_t uid, gid_t gid)
{
404
	diri->mode = mode & 07777;
405 406
	diri->uid = uid;
	diri->gid = gid;
407
	apk_db_dir_apply_diri_permissions(diri);
408 409
}

410
static void apk_db_diri_free(struct apk_database *db,
411 412
			     struct apk_db_dir_instance *diri,
			     int allow_rmdir)
413
{
414 415
	if (allow_rmdir == APK_DISALLOW_RMDIR &&
	    diri->dir->recalc_mode)
416 417
		apk_db_dir_apply_diri_permissions(diri);

418
	apk_db_dir_unref(db, diri->dir, allow_rmdir);
419 420 421
	free(diri);
}

422 423 424 425 426 427
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;

428 429 430
	if (dir.len && dir.ptr[dir.len-1] == '/')
		dir.len--;

431 432 433 434 435 436 437 438 439
	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
440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461
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;
}

462 463 464 465 466 467 468
static void apk_db_file_set(struct apk_db_file *file, mode_t mode, uid_t uid, gid_t gid)
{
	file->mode = mode & 07777;
	file->uid = uid;
	file->gid = gid;
}

469
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
470
					   struct apk_db_dir_instance *diri,
471 472
					   apk_blob_t name,
					   struct hlist_node ***after)
473 474
{
	struct apk_db_file *file;
475
	struct apk_db_file_hash_key key;
Timo Teräs's avatar
Timo Teräs committed
476 477
	struct apk_db_dir *dir = diri->dir;
	unsigned long hash;
478 479

	key = (struct apk_db_file_hash_key) {
Timo Teräs's avatar
Timo Teräs committed
480
		.dirname = APK_BLOB_PTR_LEN(dir->name, dir->namelen),
481 482
		.filename = name,
	};
483

Timo Teräs's avatar
Timo Teräs committed
484 485 486
	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);
487 488 489
	if (file != NULL)
		return file;

Timo Teräs's avatar
Timo Teräs committed
490
	file = apk_db_file_new(diri, name, after);
Timo Teräs's avatar
Timo Teräs committed
491
	apk_hash_insert_hashed(&db->installed.files, file, hash);
492
	db->installed.stats.files++;
493 494 495 496

	return file;
}

Timo Teräs's avatar
Timo Teräs committed
497 498 499
static void apk_db_pkg_rdepends(struct apk_database *db, struct apk_package *pkg)
{
	int i, j;
Timo Teräs's avatar
Timo Teräs committed
500
	struct apk_name *rname;
Timo Teräs's avatar
Timo Teräs committed
501 502

	for (i = 0; i < pkg->depends->num; i++) {
Timo Teräs's avatar
Timo Teräs committed
503
		rname = pkg->depends->item[i].name;
Timo Teräs's avatar
Timo Teräs committed
504 505
		for (j = 0; j < rname->rdepends->num; j++)
			if (rname->rdepends->item[j] == pkg->name)
Timo Teräs's avatar
Timo Teräs committed
506
				goto rdeps_done;
Timo Teräs's avatar
Timo Teräs committed
507 508
		*apk_name_array_add(&rname->rdepends) = pkg->name;
	}
Timo Teräs's avatar
Timo Teräs committed
509 510 511 512 513 514 515 516 517 518
rdeps_done:
	for (i = 0; i < pkg->install_if->num; i++) {
		rname = pkg->install_if->item[i].name;
		for (j = 0; j < rname->rinstall_if->num; j++)
			if (rname->rinstall_if->item[j] == pkg->name)
				goto riif_done;
		*apk_name_array_add(&rname->rinstall_if) = pkg->name;
	}
riif_done:
	return;
Timo Teräs's avatar
Timo Teräs committed
519 520
}

521 522 523 524 525
static inline void add_provider(struct apk_name *name, struct apk_provider p)
{
	*apk_provider_array_add(&name->providers) = p;
}

526
struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg)
527 528
{
	struct apk_package *idb;
529
	int i;
530

531
	if (pkg->license == NULL)
532
		pkg->license = apk_blob_atomize(APK_BLOB_NULL);
533

Timo Teräs's avatar
Timo Teräs committed
534
	idb = apk_hash_get(&db->available.packages, APK_BLOB_CSUM(pkg->csum));
535 536 537
	if (idb == NULL) {
		idb = pkg;
		apk_hash_insert(&db->available.packages, pkg);
538 539 540 541 542
		add_provider(pkg->name, APK_PROVIDER_FROM_PACKAGE(pkg));
		for (i = 0; i < pkg->provides->num; i++) {
			struct apk_dependency *dep = &pkg->provides->item[i];
			add_provider(dep->name, APK_PROVIDER_FROM_PROVIDES(pkg, dep));
		}
Timo Teräs's avatar
Timo Teräs committed
543
		apk_db_pkg_rdepends(db, pkg);
544 545
	} else {
		idb->repos |= pkg->repos;
546 547 548 549
		if (idb->filename == NULL && pkg->filename != NULL) {
			idb->filename = pkg->filename;
			pkg->filename = NULL;
		}
550 551 552 553 554
		if (idb->ipkg == NULL && pkg->ipkg != NULL) {
			idb->ipkg = pkg->ipkg;
			idb->ipkg->pkg = idb;
			pkg->ipkg = NULL;
		}
555 556 557 558 559
		apk_pkg_free(pkg);
	}
	return idb;
}

560
void apk_cache_format_index(apk_blob_t to, struct apk_repository *repo)
561
{
562
	/* APKINDEX.12345678.tar.gz */
563
	apk_blob_push_blob(&to, APK_BLOB_STR("APKINDEX."));
564 565
	apk_blob_push_hexdump(&to, APK_BLOB_PTR_LEN((char *) repo->csum.data,
						    APK_CACHE_CSUM_BYTES));
566
	apk_blob_push_blob(&to, APK_BLOB_STR(".tar.gz"));
567 568 569
	apk_blob_push_blob(&to, APK_BLOB_PTR_LEN("", 1));
}

570
int apk_cache_download(struct apk_database *db, const char *url, apk_blob_t *arch,
571 572 573 574 575
		       const char *item, const char *cacheitem, int verify)
{
	char fullurl[PATH_MAX];
	int r;

576
	apk_repo_format_filename(fullurl, sizeof(fullurl), url, arch, item);
577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594
	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);

595
		r = apk_tar_parse(is, apk_sign_ctx_verify_tar, &sctx, FALSE, &db->id_cache);
596 597 598 599 600 601 602
		is->close(is);
		apk_sign_ctx_free(&sctx);
		if (r != 0) {
			unlinkat(db->cachetmp_fd, cacheitem, 0);
			return r;
		}
	}
603

604 605 606 607
	if (db->cachetmp_fd != db->cache_fd) {
		if (renameat(db->cachetmp_fd, cacheitem, db->cache_fd, cacheitem) < 0)
			return -errno;
	}
608

609
	return 0;
610 611
}

612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636
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
637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662
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;
	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 {
663 664
			diri = find_diri(ipkg, bdir, diri, &file_diri_node);
			if (diri == NULL) {
665 666
				diri = apk_db_diri_new(db, pkg, bdir, &diri_node);
				file_diri_node = &diri->owned_files.first;
667
			}
Timo Teräs's avatar
Timo Teräs committed
668
			(void) apk_db_file_get(db, diri, bfile, &file_diri_node);
Timo Teräs's avatar
Timo Teräs committed
669 670 671 672 673 674
		}
	}

	return 0;
}

675
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
676 677
{
	struct apk_package *pkg = NULL;
678
	struct apk_installed_package *ipkg = NULL;
679
	struct apk_db_dir_instance *diri = NULL;
680
	struct apk_db_file *file = NULL;
681 682
	struct hlist_node **diri_node = NULL;
	struct hlist_node **file_diri_node = NULL;
683
	apk_blob_t token = APK_BLOB_STR("\n"), l;
684 685 686
	mode_t mode;
	uid_t uid;
	gid_t gid;
687
	int field, r;
688

689 690 691 692
	while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
		if (l.len < 2 || l.ptr[1] != ':') {
			if (pkg == NULL)
				continue;
693

694
			if (repo >= 0) {
695
				pkg->repos |= BIT(repo);
696 697 698 699
			} else if (repo == -1 && ipkg == NULL) {
				/* Installed package without files */
				ipkg = apk_pkg_install(db, pkg);
			}
700

701
			if (apk_db_pkg_add(db, pkg) == NULL) {
702 703
				apk_error("Installed database load failed");
				return -1;
704
			}
705
			pkg = NULL;
706
			ipkg = NULL;
707 708
			continue;
		}
709

710 711 712 713 714 715 716 717
		/* Get field */
		field = l.ptr[0];
		l.ptr += 2;
		l.len -= 2;

		/* If no package, create new */
		if (pkg == NULL) {
			pkg = apk_pkg_new();
718
			ipkg = NULL;
719 720 721
			diri = NULL;
			file_diri_node = NULL;
		}
722

723
		/* Standard index line? */
724 725
		r = apk_pkg_add_info(db, pkg, field, l);
		if (r == 0) {
726 727
			continue;
		}
728
		if (r == 1 && repo == -1 && ipkg == NULL) {
729 730 731 732 733 734
			/* Instert to installed database; this needs to
			 * happen after package name has been read, but
			 * before first FDB entry. */
			ipkg = apk_pkg_install(db, pkg);
			diri_node = hlist_tail_ptr(&ipkg->owned_dirs);
		}
735 736
		if (repo != -1 || ipkg == NULL)
			continue;
737

738 739 740 741 742
		/* Check FDB special entries */
		switch (field) {
		case 'F':
			if (pkg->name == NULL) {
				apk_error("FDB directory entry before package entry");
743 744
				return -1;
			}
745 746 747
			diri = apk_db_diri_new(db, pkg, l, &diri_node);
			file_diri_node = &diri->owned_files.first;
			break;
748 749 750 751 752
		case 'a':
			if (file == NULL) {
				apk_error("FDB file attribute metadata entry before file entry");
				return -1;
			}
753 754 755 756 757
		case 'M':
			if (diri == NULL) {
				apk_error("FDB directory metadata entry before directory entry");
				return -1;
			}
758
			uid = apk_blob_pull_uint(&l, 10);
759
			apk_blob_pull_char(&l, ':');
760
			gid = apk_blob_pull_uint(&l, 10);
761
			apk_blob_pull_char(&l, ':');
762
			mode = apk_blob_pull_uint(&l, 8);
763 764 765 766
			if (field == 'M')
				apk_db_diri_set(diri, mode, uid, gid);
			else
				apk_db_file_set(file, mode, uid, gid);
767 768 769 770 771 772
			break;
		case 'R':
			if (diri == NULL) {
				apk_error("FDB file entry before directory entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
773
			file = apk_db_file_get(db, diri, l, &file_diri_node);
774 775 776 777 778 779
			break;
		case 'Z':
			if (file == NULL) {
				apk_error("FDB checksum entry before file entry");
				return -1;
			}
Timo Teräs's avatar
Timo Teräs committed
780
			apk_blob_pull_csum(&l, &file->csum);
781
			break;
782
		case 'r':
783
			apk_blob_pull_deps(&l, db, &ipkg->replaces);
784
			break;
785
		case 'q':
786
			ipkg->replaces_priority = apk_blob_pull_uint(&l, 10);
787
			break;
788
		case 'p':
789
		case 's':
790 791
			ipkg->repository_tag = apk_db_get_tag_id(db, l);
			break;
792
		default:
793 794 795 796 797 798 799 800
			if (r != 0 && !(apk_flags & APK_FORCE)) {
				/* Installed db should not have unsupported fields */
				apk_error("This apk-tools is too old to handle installed packages");
				return -1;
			}
			/* Installed. So mark the package as installable. */
			pkg->filename = NULL;
			continue;
801
		}
802 803 804 805
		if (APK_BLOB_IS_NULL(l)) {
			apk_error("FDB format error in entry '%c'", field);
			return -1;
		}
806 807
	}

808
	return 0;
809 810
}

Timo Teräs's avatar
Timo Teräs committed
811
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
812
{
813
	struct apk_installed_package *ipkg;
814
	struct apk_package *pkg;
815
	struct apk_db_dir_instance *diri;
816
	struct apk_db_file *file;
817
	struct hlist_node *c1, *c2;
818
	char buf[1024];
819 820
	apk_blob_t bbuf = APK_BLOB_BUF(buf);
	int r;
821

822 823
	list_for_each_entry(ipkg, &db->installed.packages, installed_pkgs_list) {
		pkg = ipkg->pkg;
824 825 826
		r = apk_pkg_write_index_entry(pkg, os);
		if (r < 0)
			return r;
827

828 829
		if (ipkg->replaces->num) {
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("r:"));
830
			apk_blob_push_deps(&bbuf, db, ipkg->replaces);
831 832
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
		}
833 834 835 836 837
		if (ipkg->replaces_priority) {
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("q:"));
			apk_blob_push_uint(&bbuf, ipkg->replaces_priority, 10);
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
		}
838
		if (ipkg->repository_tag) {
839
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("s:"));
840 841 842
			apk_blob_push_blob(&bbuf, *db->repo_tags[ipkg->repository_tag].name);
			apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
		}
843
		hlist_for_each_entry(diri, c1, &ipkg->owned_dirs, pkg_dirs_list) {
844 845 846 847 848 849 850 851 852
			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"));
853

854
			hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
855 856
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("R:"));
				apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN(file->name, file->namelen));
857 858 859 860 861 862 863 864
				if (file->mode != 0 || file->uid != 0 || file->gid != 0) {
					apk_blob_push_blob(&bbuf, APK_BLOB_STR("\na:"));
					apk_blob_push_uint(&bbuf, file->uid, 10);
					apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
					apk_blob_push_uint(&bbuf, file->gid, 10);
					apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
					apk_blob_push_uint(&bbuf, file->mode, 8);
				}
Timo Teräs's avatar
Timo Teräs committed
865
				if (file->csum.type != APK_CHECKSUM_NONE) {
866
					apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nZ:"));
Timo Teräs's avatar
Timo Teräs committed
867
					apk_blob_push_csum(&bbuf, &file->csum);
868
				}
869
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
870

871
				if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
872
					return -1;
873
				bbuf = APK_BLOB_BUF(buf);
874
			}
875
			if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
876
				return -1;
877
			bbuf = APK_BLOB_BUF(buf);
878
		}
Timo Teräs's avatar
Timo Teräs committed
879
		os->write(os, "\n", 1);
880 881 882 883 884
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
885
static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
886
{
887
	struct apk_installed_package *ipkg;
888
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
889 890 891
	struct apk_file_info fi;
	char filename[256];
	apk_blob_t bfn;
892
	int r, i;
893
	time_t now = time(NULL);
894 895 896 897 898 899 900

	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;
901

Timo Teräs's avatar
Timo Teräs committed
902 903
			fi = (struct apk_file_info) {
				.name = filename,
904
				.size = ipkg->script[i].len,
Timo Teräs's avatar
Timo Teräs committed
905
				.mode = 0755 | S_IFREG,
906
				.mtime = now,
Timo Teräs's avatar
Timo Teräs committed
907 908 909 910 911 912
			};
			/* 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("-"));
913
			apk_blob_push_blob(&bfn, *pkg->version);
Timo Teräs's avatar
Timo Teräs committed
914 915 916
			apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
			apk_blob_push_csum(&bfn, &pkg->csum);
			apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
917
			apk_blob_push_blob(&bfn, APK_BLOB_STR(apk_script_types[i]));
Timo Teräs's avatar
Timo Teräs committed
918 919
			apk_blob_push_blob(&bfn, APK_BLOB_PTR_LEN("", 1));

920
			r = apk_tar_write_entry(os, &fi, ipkg->script[i].ptr);
Timo Teräs's avatar
Timo Teräs committed
921 922
			if (r < 0)
				return r;
923 924 925
		}
	}

926
	return apk_tar_write_entry(os, NULL, NULL);
927 928
}

Timo Teräs's avatar
Timo Teräs committed
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962
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);
963 964
	if (pkg != NULL && pkg->ipkg != NULL)
		apk_ipkg_add_script(pkg->ipkg, is, type, ae->size);
Timo Teräs's avatar
Timo Teräs committed
965 966 967 968

	return 0;
}

969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
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);
990 991
		bfn = apk_blob_pushed(APK_BLOB_BUF(buf), bfn);
		os->write(os, bfn.ptr, bfn.len);
992

993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
		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);
Timo Teräs's avatar
Timo Teräs committed
1018 1019
		if (ipkg->triggers->num != 0 &&
		    !list_hashed(&ipkg->trigger_pkgs_list))
1020 1021 1022 1023 1024
			list_add_tail(&ipkg->trigger_pkgs_list,
				      &db->installed.triggers);
	}
}

Timo Teräs's avatar
Timo Teräs committed
1025
static int apk_db_read_state(struct apk_database *db, int flags)
1026
{
1027
	struct apk_istream *is;
1028
	struct apk_bstream *bs;
1029
	apk_blob_t blob, world;
Timo Teräs's avatar
Timo Teräs committed
1030
	int r;
1031 1032 1033 1034 1035 1036 1037 1038 1039

	/* 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
1040
	if (!(flags & APK_OPENF_NO_WORLD)) {
1041
		blob = world = apk_blob_from_file(db->root_fd, apk_world_file);
Timo Teräs's avatar
Timo Teräs committed
1042 1043
		if (APK_BLOB_IS_NULL(blob))
			return -ENOENT;
1044 1045 1046
		blob = apk_blob_trim(blob);
		if (apk_blob_chr(blob, ' '))
			db->compat_old_world = 1;
1047
		apk_blob_pull_deps(&blob, db, &db->world);
1048
		free(world.ptr);
Timo Teräs's avatar
Timo Teräs committed
1049
	}
1050

Timo Teräs's avatar
Timo Teräs committed
1051
	if (!(flags & APK_OPENF_NO_INSTALLED)) {
Timo Teräs's avatar
Timo Teräs committed
1052
		bs = apk_bstream_from_file(db->root_fd, apk_installed_file);
1053
		if (bs != NULL) {
1054
			r = apk_db_index_read(db, bs, -1);
1055
			bs->close(bs, NULL);
1056 1057
			if (r != 0)
				return -1;
Timo Teräs's avatar
Timo Teräs committed
1058
		}
1059

Timo Teräs's avatar
Timo Teräs committed
1060
		bs = apk_bstream_from_file(db->root_fd, apk_triggers_file);
1061 1062 1063 1064
		if (bs != NULL) {
			apk_db_triggers_read(db, bs);
			bs->close(bs, NULL);
		}
1065 1066
	}

Timo Teräs's avatar
Timo Teräs committed
1067
	if (!(flags & APK_OPENF_NO_SCRIPTS)) {
Timo Teräs's avatar
Timo Teräs committed
1068
		is = apk_istream_from_file(db->root_fd, apk_scripts_file);
Timo Teräs's avatar
Timo Teräs committed
1069
		if (is != NULL) {
1070
			apk_tar_parse(is, apk_read_script_archive_entry, db,
1071
				      FALSE, &db->id_cache);
Timo Teräs's avatar
Timo Teräs committed
1072
			is->close(is);
Timo Teräs's avatar
Timo Teräs committed
1073
		}
Timo Teräs's avatar