database.c 38.6 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
#include "apk_archive.h"
29

30
const char * const apkindex_tar_gz = "APKINDEX.tar.gz";
Timo Teräs's avatar
Timo Teräs committed
31
const char * const apk_index_gz = "APK_INDEX.gz";
Timo Teräs's avatar
Timo Teräs committed
32 33 34
static const char * const apk_static_cache_dir = "var/lib/apk";
static const char * const apk_linked_cache_dir = "etc/apk/cache";

35 36 37 38 39
struct install_ctx {
	struct apk_database *db;
	struct apk_package *pkg;

	int script;
40
	struct apk_db_dir_instance *diri;
Timo Teräs's avatar
Timo Teräs committed
41
	struct apk_checksum data_csum;
42
	struct apk_sign_ctx sctx;
43

44 45 46 47 48
	apk_progress_cb cb;
	void *cb_ctx;
	size_t installed_size;
	size_t current_file_size;

49 50
	struct hlist_node **diri_node;
	struct hlist_node **file_diri_node;
51 52
};

53
static apk_blob_t pkg_name_get_key(apk_hash_item item)
54
{
55
	return APK_BLOB_STR(((struct apk_name *) item)->name);
56 57
}

58 59 60 61 62 63 64
static void pkg_name_free(struct apk_name *name)
{
	free(name->name);
	free(name->pkgs);
	free(name);
}

65 66 67
static const struct apk_hash_ops pkg_name_hash_ops = {
	.node_offset = offsetof(struct apk_name, hash_node),
	.get_key = pkg_name_get_key,
68 69
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
70
	.delete_item = (apk_hash_delete_f) pkg_name_free,
71 72
};

73
static apk_blob_t pkg_info_get_key(apk_hash_item item)
74
{
Timo Teräs's avatar
Timo Teräs committed
75
	return APK_BLOB_CSUM(((struct apk_package *) item)->csum);
76 77
}

78
static unsigned long csum_hash(apk_blob_t csum)
79
{
80 81
	/* Checksum's highest bits have the most "randomness", use that
	 * directly as hash */
82
	return *(unsigned long *) csum.ptr;
83 84 85 86 87
}

static const struct apk_hash_ops pkg_info_hash_ops = {
	.node_offset = offsetof(struct apk_package, hash_node),
	.get_key = pkg_info_get_key,
88 89
	.hash_key = csum_hash,
	.compare = apk_blob_compare,
90 91 92
	.delete_item = (apk_hash_delete_f) apk_pkg_free,
};

93
static apk_blob_t apk_db_dir_get_key(apk_hash_item item)
94
{
Timo Teräs's avatar
Timo Teräs committed
95 96
	struct apk_db_dir *dir = (struct apk_db_dir *) item;
	return APK_BLOB_PTR_LEN(dir->name, dir->namelen);
97 98 99 100 101
}

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,
102 103
	.hash_key = apk_blob_hash,
	.compare = apk_blob_compare,
104 105 106
	.delete_item = (apk_hash_delete_f) free,
};

107 108 109 110 111 112
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)
113
{
114 115
	struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;

Timo Teräs's avatar
Timo Teräs committed
116
	return apk_blob_hash_seed(key->filename, apk_blob_hash(key->dirname));
117 118 119 120 121 122
}

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
123 124
	return apk_blob_hash_seed(APK_BLOB_PTR_LEN(dbf->name, dbf->namelen),
				  dbf->diri->dir->hash);
125 126 127 128 129 130
}

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
131
	struct apk_db_dir *dir = dbf->diri->dir;
132 133
	int r;

Timo Teräs's avatar
Timo Teräs committed
134 135
	r = apk_blob_compare(key->filename,
			     APK_BLOB_PTR_LEN(dbf->name, dbf->namelen));
136 137 138
	if (r != 0)
		return r;

Timo Teräs's avatar
Timo Teräs committed
139 140 141
	r = apk_blob_compare(key->dirname,
			     APK_BLOB_PTR_LEN(dir->name, dir->namelen));
	return r;
142 143 144 145
}

static const struct apk_hash_ops file_hash_ops = {
	.node_offset = offsetof(struct apk_db_file, hash_node),
146 147 148
	.hash_key = apk_db_file_hash_key,
	.hash_item = apk_db_file_hash_item,
	.compare_item = apk_db_file_compare_item,
149 150 151
	.delete_item = (apk_hash_delete_f) free,
};

Timo Teräs's avatar
Timo Teräs committed
152 153 154 155 156
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);
}

157
struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
158 159
{
	struct apk_name *pn;
160
	unsigned long hash = apk_hash_from_key(&db->available.names, name);
161

162
	pn = (struct apk_name *) apk_hash_get_hashed(&db->available.names, name, hash);
163 164 165 166 167 168 169
	if (pn != NULL)
		return pn;

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

170
	pn->name = apk_blob_cstr(name);
171
	pn->id = db->name_id++;
172
	apk_hash_insert_hashed(&db->available.names, pn, hash);
173 174 175 176

	return pn;
}

177
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
178 179 180 181 182 183 184 185
{
	dir->refs--;
	if (dir->refs > 0)
		return;

	db->installed.stats.dirs--;

	if (dir->parent != NULL)
186
		apk_db_dir_unref(db, dir->parent);
187 188
}

189
static struct apk_db_dir *apk_db_dir_ref(struct apk_db_dir *dir)
190 191 192 193 194
{
	dir->refs++;
	return dir;
}

195 196
struct apk_db_dir *apk_db_dir_query(struct apk_database *db,
				    apk_blob_t name)
197 198 199 200
{
	return (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
}

201 202
static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
					 apk_blob_t name)
203 204 205
{
	struct apk_db_dir *dir;
	apk_blob_t bparent;
206
	unsigned long hash = apk_hash_from_key(&db->installed.dirs, name);
207
	int i;
208

209
	if (name.len && name.ptr[name.len-1] == '/')
210 211
		name.len--;

212
	dir = (struct apk_db_dir *) apk_hash_get_hashed(&db->installed.dirs, name, hash);
213
	if (dir != NULL)
214
		return apk_db_dir_ref(dir);
215

216
	db->installed.stats.dirs++;
217 218
	dir = malloc(sizeof(*dir) + name.len + 1);
	memset(dir, 0, sizeof(*dir));
219
	dir->refs = 1;
Timo Teräs's avatar
Timo Teräs committed
220 221 222 223
	memcpy(dir->name, name.ptr, name.len);
	dir->name[name.len] = 0;
	dir->namelen = name.len;
	dir->hash = hash;
224
	apk_hash_insert_hashed(&db->installed.dirs, dir, hash);
225

226 227
	if (name.len == 0)
		dir->parent = NULL;
228
	else if (apk_blob_rsplit(name, '/', &bparent, NULL))
229
		dir->parent = apk_db_dir_get(db, bparent);
230
	else
231
		dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
232

233 234 235 236 237
	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] == '-' &&
Timo Teräs's avatar
Timo Teräs committed
238
		    strcmp(&db->protected_paths->item[i][1], dir->name) == 0)
239
			dir->flags &= ~APK_DBDIRF_PROTECTED;
Timo Teräs's avatar
Timo Teräs committed
240
		else if (strcmp(db->protected_paths->item[i], dir->name) == 0)
241 242 243
			dir->flags |= APK_DBDIRF_PROTECTED;
	}

244 245 246
	return dir;
}

247 248 249
static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
						   struct apk_package *pkg,
						   apk_blob_t name,
250
						   struct hlist_node ***after)
251 252 253 254
{
	struct apk_db_dir_instance *diri;

	diri = calloc(1, sizeof(struct apk_db_dir_instance));
255
	if (diri != NULL) {
256 257
		hlist_add_after(&diri->pkg_dirs_list, *after);
		*after = &diri->pkg_dirs_list.next;
258
		diri->dir = apk_db_dir_get(db, name);
259 260
		diri->pkg = pkg;
	}
261 262 263 264 265 266 267 268 269 270 271 272

	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;
}

273
static void apk_db_diri_mkdir(struct apk_db_dir_instance *diri)
274
{
Timo Teräs's avatar
Timo Teräs committed
275 276
	if (mkdir(diri->dir->name, diri->mode) == 0)
		chown(diri->dir->name, diri->uid, diri->gid);
277 278
}

279 280
static void apk_db_diri_rmdir(struct apk_db_dir_instance *diri)
{
Timo Teräs's avatar
Timo Teräs committed
281 282
	if (diri->dir->refs == 1)
		rmdir(diri->dir->name);
283 284
}

285 286 287
static void apk_db_diri_free(struct apk_database *db,
			     struct apk_db_dir_instance *diri)
{
288
	apk_db_dir_unref(db, diri->dir);
289 290 291
	free(diri);
}

292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
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));
}

307
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
308
					   struct apk_db_dir_instance *diri,
309 310
					   apk_blob_t name,
					   struct hlist_node ***after)
311 312
{
	struct apk_db_file *file;
313
	struct apk_db_file_hash_key key;
Timo Teräs's avatar
Timo Teräs committed
314 315
	struct apk_db_dir *dir = diri->dir;
	unsigned long hash;
316 317

	key = (struct apk_db_file_hash_key) {
Timo Teräs's avatar
Timo Teräs committed
318
		.dirname = APK_BLOB_PTR_LEN(dir->name, dir->namelen),
319 320
		.filename = name,
	};
321

Timo Teräs's avatar
Timo Teräs committed
322 323 324
	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);
325 326 327
	if (file != NULL)
		return file;

328 329
	file = malloc(sizeof(*file) + name.len + 1);
	memset(file, 0, sizeof(*file));
Timo Teräs's avatar
Timo Teräs committed
330 331 332
	memcpy(file->name, name.ptr, name.len);
	file->name[name.len] = 0;
	file->namelen = name.len;
333

334
	file->diri = diri;
335 336 337
	hlist_add_after(&file->diri_files_list, *after);
	*after = &file->diri_files_list.next;

Timo Teräs's avatar
Timo Teräs committed
338
	apk_hash_insert_hashed(&db->installed.files, file, hash);
339
	db->installed.stats.files++;
340 341 342 343

	return file;
}

344 345 346 347
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)
348
{
349
	hlist_del(&file->diri_files_list, &file->diri->owned_files);
350
	file->diri = diri;
351 352
	hlist_add_after(&file->diri_files_list, *after);
	*after = &file->diri_files_list.next;
353 354
}

Timo Teräs's avatar
Timo Teräs committed
355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373
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;
	}
}

374
struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg)
375 376 377
{
	struct apk_package *idb;

Timo Teräs's avatar
Timo Teräs committed
378
	idb = apk_hash_get(&db->available.packages, APK_BLOB_CSUM(pkg->csum));
379 380 381 382
	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
383
		apk_db_pkg_rdepends(db, pkg);
384 385
	} else {
		idb->repos |= pkg->repos;
386 387 388 389
		if (idb->filename == NULL && pkg->filename != NULL) {
			idb->filename = pkg->filename;
			pkg->filename = NULL;
		}
390 391 392 393 394
		apk_pkg_free(pkg);
	}
	return idb;
}

395
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
396 397
{
	struct apk_package *pkg = NULL;
398
	struct apk_db_dir_instance *diri = NULL;
399
	struct apk_db_file *file = NULL;
400 401
	struct hlist_node **diri_node = NULL;
	struct hlist_node **file_diri_node = NULL;
402 403
	apk_blob_t token = APK_BLOB_STR("\n"), l;
	int field;
404

405 406 407 408
	while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
		if (l.len < 2 || l.ptr[1] != ':') {
			if (pkg == NULL)
				continue;
409

410 411 412 413
			if (repo != -1)
				pkg->repos |= BIT(repo);
			else
				apk_pkg_set_state(db, pkg, APK_PKG_INSTALLED);
414

415 416 417
			if (apk_db_pkg_add(db, pkg) != pkg && repo == -1) {
				apk_error("Installed database load failed");
				return -1;
418
			}
419 420 421
			pkg = NULL;
			continue;
		}
422

423 424 425 426 427 428 429 430 431 432 433 434
		/* 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;
		}
435

436 437 438 439 440 441 442 443
		/* 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;
		}
444

445 446 447 448 449
		/* Check FDB special entries */
		switch (field) {
		case 'F':
			if (pkg->name == NULL) {
				apk_error("FDB directory entry before package entry");
450 451
				return -1;
			}
452 453 454 455 456 457 458 459
			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;
			}
460 461 462 463 464
			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);
465 466 467 468 469 470 471 472 473 474 475 476 477 478
			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;
			}
Timo Teräs's avatar
Timo Teräs committed
479
			apk_blob_pull_csum(&l, &file->csum);
480 481 482 483
			break;
		default:
			apk_error("FDB entry '%c' unsupported", field);
			return -1;
484
		}
485 486 487 488
		if (APK_BLOB_IS_NULL(l)) {
			apk_error("FDB format error in entry '%c'", field);
			return -1;
		}
489 490
	}

491
	return 0;
492 493
}

Timo Teräs's avatar
Timo Teräs committed
494
static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
495 496
{
	struct apk_package *pkg;
497
	struct apk_db_dir_instance *diri;
498
	struct apk_db_file *file;
499
	struct hlist_node *c1, *c2;
500
	char buf[1024];
501 502
	apk_blob_t bbuf = APK_BLOB_BUF(buf);
	int r;
503

504
	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
505 506 507
		r = apk_pkg_write_index_entry(pkg, os);
		if (r < 0)
			return r;
508

509
		hlist_for_each_entry(diri, c1, &pkg->owned_dirs, pkg_dirs_list) {
510 511 512 513 514 515 516 517 518
			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"));
519

520
			hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
521 522
				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
523
				if (file->csum.type != APK_CHECKSUM_NONE) {
524
					apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nZ:"));
Timo Teräs's avatar
Timo Teräs committed
525
					apk_blob_push_csum(&bbuf, &file->csum);
526
				}
527
				apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
528

529
				if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
530
					return -1;
531
				bbuf = APK_BLOB_BUF(buf);
532
			}
533
			if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
534
				return -1;
535
			bbuf = APK_BLOB_BUF(buf);
536
		}
Timo Teräs's avatar
Timo Teräs committed
537
		os->write(os, "\n", 1);
538 539 540 541 542
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
543
static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
544 545 546
{
	struct apk_package *pkg;
	struct apk_script *script;
547
	struct hlist_node *c2;
Timo Teräs's avatar
Timo Teräs committed
548 549 550
	struct apk_file_info fi;
	char filename[256];
	apk_blob_t bfn;
551
	int r;
552

553
	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
554
		hlist_for_each_entry(script, c2, &pkg->scripts, script_list) {
Timo Teräs's avatar
Timo Teräs committed
555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571
			fi = (struct apk_file_info) {
				.name = filename,
				.size = script->size,
				.mode = 0755 | S_IFREG,
			};
			/* 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("."));
			apk_blob_push_blob(&bfn, APK_BLOB_STR(apk_script_types[script->type]));
			apk_blob_push_blob(&bfn, APK_BLOB_PTR_LEN("", 1));

572
			r = apk_tar_write_entry(os, &fi, script->script);
Timo Teräs's avatar
Timo Teräs committed
573 574
			if (r < 0)
				return r;
575 576 577
		}
	}

578
	return apk_tar_write_entry(os, NULL, NULL);
579 580
}

Timo Teräs's avatar
Timo Teräs committed
581
static int apk_db_scriptdb_read_v1(struct apk_database *db, struct apk_istream *is)
582 583
{
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
584 585 586 587 588 589
	struct {
		unsigned char md5sum[16];
		unsigned int type;
		unsigned int size;
	} hdr;
	struct apk_checksum csum;
590

591
	while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
Timo Teräs's avatar
Timo Teräs committed
592 593 594 595
		memcpy(csum.data, hdr.md5sum, sizeof(hdr.md5sum));
		csum.type = APK_CHECKSUM_MD5;

		pkg = apk_db_get_pkg(db, &csum);
596 597
		if (pkg != NULL)
			apk_pkg_add_script(pkg, is, hdr.type, hdr.size);
Timo Teräs's avatar
Timo Teräs committed
598 599
		else
			apk_istream_skip(is, hdr.size);
600 601 602 603 604
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
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);
	if (pkg != NULL)
		apk_pkg_add_script(pkg, is, type, ae->size);

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
645
static int apk_db_read_state(struct apk_database *db, int flags)
646
{
647
	struct apk_istream *is;
648
	struct apk_bstream *bs;
Timo Teräs's avatar
Timo Teräs committed
649
	apk_blob_t blob;
650
	int i;
651 652 653 654 655 656 657 658 659

	/* Read:
	 * 1. installed repository
	 * 2. source repositories
	 * 3. master dependencies
	 * 4. package statuses
	 * 5. files db
	 * 6. script db
	 */
660 661
	fchdir(db->root_fd);

Timo Teräs's avatar
Timo Teräs committed
662 663 664 665 666 667
	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);
668

Timo Teräs's avatar
Timo Teräs committed
669 670 671
		for (i = 0; i < db->world->num; i++)
			db->world->item[i].name->flags |= APK_NAME_TOPLEVEL;
	}
672

Timo Teräs's avatar
Timo Teräs committed
673
	if (!(flags & APK_OPENF_NO_INSTALLED)) {
674 675 676 677
		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
678
		}
679 680
	}

Timo Teräs's avatar
Timo Teräs committed
681
	if (!(flags & APK_OPENF_NO_SCRIPTS)) {
Timo Teräs's avatar
Timo Teräs committed
682
		is = apk_istream_from_file("var/lib/apk/scripts.tar");
Timo Teräs's avatar
Timo Teräs committed
683
		if (is != NULL) {
684
			apk_tar_parse(is, apk_read_script_archive_entry, db);
Timo Teräs's avatar
Timo Teräs committed
685 686 687 688
		} else {
			is = apk_istream_from_file("var/lib/apk/scripts");
			if (is != NULL)
				apk_db_scriptdb_read_v1(db, is);
Timo Teräs's avatar
Timo Teräs committed
689
		}
Timo Teräs's avatar
Timo Teräs committed
690 691
		if (is != NULL)
			is->close(is);
692 693 694 695 696
	}

	return 0;
}

697 698 699 700 701 702 703 704
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;
}

705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
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;
}

728 729 730 731
static void handle_alarm(int sig)
{
}

732
int apk_db_open(struct apk_database *db, const char *root, unsigned int flags)
733
{
Natanael Copa's avatar
Natanael Copa committed
734
	const char *apk_repos = getenv("APK_REPOS"), *msg = NULL;
735
	struct apk_repository_url *repo = NULL;
Timo Teräs's avatar
Timo Teräs committed
736 737 738
	struct stat st;
	apk_blob_t blob;
	int r;
739

740 741 742 743
	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);
744
	apk_hash_init(&db->installed.files, &file_hash_ops, 4000);
745
	list_init(&db->installed.packages);
Timo Teräs's avatar
Timo Teräs committed
746
	db->cache_dir = apk_static_cache_dir;
747 748

	if (root != NULL) {
749
		fchdir(apk_cwd_fd);
750 751
		db->root = strdup(root);
		db->root_fd = open(root, O_RDONLY);
752 753 754 755
		if (db->root_fd < 0 && (flags & APK_OPENF_CREATE)) {
			mkdir(db->root, 0755);
			db->root_fd = open(root, O_RDONLY);
		}
756
		if (db->root_fd < 0) {
757 758 759 760 761
			msg = "Unable to open root";
			goto ret_errno;
		}

		fchdir(db->root_fd);
Timo Teräs's avatar
Timo Teräs committed
762 763 764
		if (stat(apk_linked_cache_dir, &st) == 0 && S_ISDIR(st.st_mode))
			db->cache_dir = apk_linked_cache_dir;

765 766 767
		if (flags & APK_OPENF_WRITE) {
			db->lock_fd = open("var/lib/apk/lock",
					   O_CREAT | O_WRONLY, 0400);
768 769 770 771 772 773 774 775 776 777
			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);
			}
778 779
			if (db->lock_fd < 0 ||
			    flock(db->lock_fd, LOCK_EX | LOCK_NB) < 0) {
780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797
				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);
				}
798
			}
799 800
		}
	}
801 802 803 804

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

805
	if (root != NULL) {
Timo Teräs's avatar
Timo Teräs committed
806 807 808
		r = apk_db_read_state(db, flags);
		if (r == -ENOENT && (flags & APK_OPENF_CREATE)) {
			r = apk_db_create(db);
809
			if (r != 0) {
Timo Teräs's avatar
Timo Teräs committed
810
				msg = "Unable to create database";
811 812
				goto ret_r;
			}
Timo Teräs's avatar
Timo Teräs committed
813 814 815 816 817
			r = apk_db_read_state(db, flags);
		}
		if (r != 0) {
			msg = "Unable to read database state";
			goto ret_r;
818 819
		}

Timo Teräs's avatar
Timo Teräs committed
820
		if (!(flags & APK_OPENF_NO_REPOS)) {
821 822 823 824
			if (apk_repos == NULL)
				apk_repos = "/etc/apk/repositories";
			blob = apk_blob_from_file(apk_repos);
			if (!APK_BLOB_IS_NULL(blob)) {
825 826
				apk_blob_for_each_segment(blob, "\n",
							  apk_db_add_repository, db);
827 828
				free(blob.ptr);
			}
829 830 831
		}
	}

Timo Teräs's avatar
Timo Teräs committed
832
	if (!(flags & APK_OPENF_NO_REPOS)) {
833 834
		list_for_each_entry(repo, &apk_repository_list.list, list)
			apk_db_add_repository(db, APK_BLOB_STR(repo->url));
835
	}
836

837
	fchdir(apk_cwd_fd);
838
	return 0;
839 840 841 842

ret_errno:
	r = -errno;
ret_r:
Natanael Copa's avatar
Natanael Copa committed
843 844
	if (msg != NULL)
		apk_error("%s: %s", msg, strerror(-r));
845
	apk_db_close(db);
846
	fchdir(apk_cwd_fd);
847
	return r;
848 849
}

850 851 852 853 854
struct write_ctx {
	struct apk_database *db;
	int fd;
};

855
int apk_db_write_config(struct apk_database *db)
856
{
Timo Teräs's avatar
Timo Teräs committed
857
	struct apk_ostream *os;
858 859

	if (db->root == NULL)
860
		return 0;
861

862 863 864 865 866
	if (db->lock_fd == 0) {
		apk_error("Refusing to write db without write lock!");
		return -1;
	}

867 868
	fchdir(db->root_fd);

869
	os = apk_ostream_to_file("var/lib/apk/world", 0644);
Timo Teräs's avatar
Timo Teräs committed
870
	if (os == NULL)
871
		return -1;
872 873
	apk_deps_write(db->world, os);
	os->write(os, "\n", 1);
Timo Teräs's avatar
Timo Teräs committed
874
	os->close(os);
875

876
	os = apk_ostream_to_file("var/lib/apk/installed.new", 0644);
Timo Teräs's avatar
Timo Teräs committed
877
	if (os == NULL)
878
		return -1;
Timo Teräs's avatar
Timo Teräs committed
879 880
	apk_db_write_fdb(db, os);
	os->close(os);
881

882 883 884
	if (rename("var/lib/apk/installed.new", "var/lib/apk/installed") < 0)
		return -errno;

Timo Teräs's avatar
Timo Teräs committed
885
	os = apk_ostream_to_file("var/lib/apk/scripts.tar.new", 0644);
Timo Teräs's avatar
Timo Teräs committed
886
	if (os == NULL)
887
		return -1;
Timo Teräs's avatar
Timo Teräs committed
888 889
	apk_db_scriptdb_write(db, os);
	os->close(os);
Timo Teräs's avatar
Timo Teräs committed
890 891 892 893
	if (rename("var/lib/apk/scripts.tar.new", "var/lib/apk/scripts.tar") < 0)
		return -errno;

	unlink("var/lib/apk/scripts");
894 895 896 897

	return 0;
}

898
void apk_db_close(struct apk_database *db)
899
{
900 901
	struct apk_package *pkg;
	struct apk_db_dir_instance *diri;
902
	struct hlist_node *dc, *dn;
903 904 905 906 907 908 909 910
	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);
		}
	}

911
	for (i = 0; i < db->num_repos; i++) {
912
		free(db->repos[i].url);
913
	}
914 915 916 917 918 919 920
	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);
921

922 923
	apk_hash_free(&db->available.names);
	apk_hash_free(&db->available.packages);
924
	apk_hash_free(&db->installed.files);
925
	apk_hash_free(&db->installed.dirs);
926

927
	if (db->root_fd)
928
		close(db->root_fd);
929 930 931
	if (db->lock_fd)
		close(db->lock_fd);
	if (db->root != NULL)
932 933 934
		free(db->root);
}

Timo Teräs's avatar
Timo Teräs committed
935 936 937 938 939
int apk_db_cache_active(struct apk_database *db)
{
	return db->cache_dir != apk_static_cache_dir;
}

Timo Teräs's avatar
Timo Teräs committed
940 941
struct apk_package *apk_db_get_pkg(struct apk_database *db,
				   struct apk_checksum *csum)
942
{
Timo Teräs's avatar
Timo Teräs committed
943
	return apk_hash_get(&db->available.packages, APK_BLOB_CSUM(*csum));
944 945
}

946 947 948
struct apk_package *apk_db_get_file_owner(struct apk_database *db,
					  apk_blob_t filename)
{
949
	struct apk_db_file *dbf;
950
	struct apk_db_file_hash_key key;
951

952 953
	if (filename.len && filename.ptr[0] == '/')
		filename.len--, filename.ptr++;
954

955 956 957 958 959
	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));
960
	if (dbf == NULL)
961 962
		return NULL;

963
	return dbf->diri->pkg;
964 965
}

966 967 968 969 970
struct index_write_ctx {
	struct apk_ostream *os;
	int count;
};

971 972
static int write_index_entry(apk_hash_item item, void *ctx)
{
973 974
	struct index_write_ctx *iwctx = (struct index_write_ctx *) ctx;
	struct apk_package *pkg = (struct apk_package *) item;
975
	int r;
976

977
	if (pkg->filename == NULL)
978 979
		return 0;

980 981 982
	r = apk_pkg_write_index_entry(pkg, iwctx->os);
	if (r < 0)
		return r;
Timo Teräs's avatar
Timo Teräs committed
983

984
	if (iwctx->os->write(iwctx->os, "\n", 1) != 1)
Timo Teräs's avatar
Timo Teräs committed
985
		return -1;
986

987
	iwctx->count++;
988 989 990
	return 0;
}

991
int apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
992
{
993 994 995 996 997
	struct index_write_ctx ctx = { os, 0 };

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

	return ctx.count;
998 999
}

Timo Teräs's avatar
Timo Teräs committed
1000
static void apk_db_cache_get_name(char *buf, size_t bufsz,
Timo Teräs's avatar
Timo Teräs committed
1001 1002
				  struct apk_database *db,
				  struct apk_checksum *csum,
Timo Teräs's avatar
Timo Teräs committed
1003
				  const char *file, int temp)
1004
{
Timo Teräs's avatar
Timo Teräs committed
1005
	char csumstr[APK_CACHE_CSUM_BYTES*2+1];
1006 1007 1008
	apk_blob_t bbuf = APK_BLOB_BUF(csumstr);

	apk_blob_push_hexdump(&bbuf,
Timo Teräs's avatar
Timo Teräs committed
1009 1010
			      APK_BLOB_PTR_LEN((char *) csum->data, APK_CACHE_CSUM_BYTES));
	apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN("", 1));
1011

Timo Teräs's avatar
Timo Teräs committed
1012 1013
	snprintf(buf, bufsz, "%s/%s/%s.%s%s",
		 db->root, db->cache_dir, csumstr, file, temp ? ".new" : "");
1014 1015
}

Timo Teräs's avatar
Timo Teräs committed
1016
static struct apk_bstream *apk_db_cache_open(struct apk_database *db,
Timo Teräs's avatar
Timo Teräs committed
1017 1018
					     struct apk_checksum *csum,
					     const char *file)
1019 1020 1021 1022
{
	char tmp[256];

	if (db->root == NULL)
Timo Teräs's avatar
Timo Teräs committed
1023
		return NULL;
1024

Timo Teräs's avatar
Timo Teräs committed
1025 1026
	apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, file, FALSE);
	return apk_bstream_from_file(tmp);
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
}

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
1039
int apk_cache_download(struct apk_database *db, struct apk_checksum *csum,
1040
		       const char *url, const char *item, int verify)
1041 1042
{
	char tmp[256], tmp2[256];
1043
	int r;
1044

1045 1046
	snprintf(tmp, sizeof(tmp), "%s%s%s",
		 url, url[strlen(url)-1] == '/' ? "" : "/", item);
Timo Teräs's avatar
Timo Teräs committed
1047
	apk_message("fetch %s", tmp);
1048

Timo Teräs's avatar
Timo Teräs committed
1049 1050
	if (apk_flags & APK_SIMULATE)
		return 0;
Timo Teräs's avatar
Timo Teräs committed
1051

Timo Teräs's avatar
Timo Teräs committed
1052
	apk_db_cache_get_name(tmp2, sizeof(tmp2), db, csum, item, TRUE);
1053 1054 1055 1056
	r = apk_url_download(tmp, tmp2);
	if (r < 0)
		return r;

1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
	if (verify != APK_SIGN_NONE) {
		struct apk_istream *is;
		struct apk_sign_ctx sctx;
		int ok;

		apk_sign_ctx_init(&sctx, APK_SIGN_VERIFY, NULL);
		is = apk_bstream_gunzip_mpart(apk_bstream_from_file(tmp2),
			apk_sign_ctx_mpart_cb, &sctx);
		is->close(is);
		r = apk_tar_parse(is, apk_sign_ctx_verify_tar, &sctx);
		ok = (r != 0) && sctx.control_verified && sctx.data_verified;
		apk_sign_ctx_free(&sctx);
		if (!ok) {
			unlink(tmp2);
			return -10;
		}
	}

Timo Teräs's avatar
Timo Teräs committed
1075
	apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, item, FALSE);
1076 1077 1078 1079 1080 1081
	if (rename(tmp2, tmp) < 0)
		return -errno;

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
1082 1083
int apk_cache_exists(struct apk_database *db, struct apk_checksum *csum,
		     const char *item)
Timo Teräs's avatar
Timo Teräs committed
1084 1085 1086 1087 1088 1089 1090 1091 1092 1093
{
	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;
}

1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105
static int apk_cache_delete(struct apk_database *db, struct apk_checksum *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 unlink(tmp);
}