package.c 19.9 KB
Newer Older
1 2 3 4 5 6
/* package.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
 * 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.
 */

12
#include <errno.h>
13 14 15
#include <fcntl.h>
#include <ctype.h>
#include <stdio.h>
16
#include <limits.h>
17 18 19 20 21 22
#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>

Timo Teräs's avatar
Timo Teräs committed
23 24
#include <openssl/pem.h>

25 26 27 28 29 30
#include "apk_defines.h"
#include "apk_archive.h"
#include "apk_package.h"
#include "apk_database.h"
#include "apk_state.h"

31
struct apk_package *apk_pkg_new(void)
32 33 34 35 36 37 38 39 40 41
{
	struct apk_package *pkg;

	pkg = calloc(1, sizeof(struct apk_package));
	if (pkg != NULL)
		list_init(&pkg->installed_pkgs_list);

	return pkg;
}

42 43 44 45 46 47
int apk_pkg_parse_name(apk_blob_t apkname,
		       apk_blob_t *name,
		       apk_blob_t *version)
{
	int i, dash = 0;

48 49 50
	if (APK_BLOB_IS_NULL(apkname))
		return -1;

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
	for (i = apkname.len - 2; i >= 0; i--) {
		if (apkname.ptr[i] != '-')
			continue;
		if (isdigit(apkname.ptr[i+1]))
			break;
		if (++dash >= 2)
			return -1;
	}
	if (name != NULL)
		*name = APK_BLOB_PTR_LEN(apkname.ptr, i);
	if (version != NULL)
		*version = APK_BLOB_PTR_PTR(&apkname.ptr[i+1],
					    &apkname.ptr[apkname.len-1]);

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
68
static apk_blob_t trim(apk_blob_t str)
69 70
{
	if (str.ptr == NULL || str.len < 1)
Timo Teräs's avatar
Timo Teräs committed
71
		return str;
72

73 74
	if (str.ptr[str.len-1] == '\n') {
		str.ptr[str.len-1] = 0;
Timo Teräs's avatar
Timo Teräs committed
75
		return APK_BLOB_PTR_LEN(str.ptr, str.len-1);
76
	}
77

Timo Teräs's avatar
Timo Teräs committed
78
	return str;
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
}

int apk_deps_add(struct apk_dependency_array **depends,
		 struct apk_dependency *dep)
{
	struct apk_dependency_array *deps = *depends;
	int i;

	if (deps != NULL) {
		for (i = 0; i < deps->num; i++) {
			if (deps->item[i].name == dep->name)
				return 0;
		}
	}

	*apk_dependency_array_add(depends) = *dep;
	return 0;
}
Timo Teräs's avatar
Timo Teräs committed
97

98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116
void apk_deps_del(struct apk_dependency_array **pdeps,
		  struct apk_name *name)
{
	struct apk_dependency_array *deps = *pdeps;
	int i;

	if (deps == NULL)
		return;

	for (i = 0; i < deps->num; i++) {
		if (deps->item[i].name != name)
			continue;

		deps->item[i] = deps->item[deps->num-1];
		*pdeps = apk_dependency_array_resize(deps, deps->num-1);
		break;
	}
}

117 118 119 120 121 122 123 124 125 126
struct parse_depend_ctx {
	struct apk_database *db;
	struct apk_dependency_array **depends;
};

static int parse_depend(void *ctx, apk_blob_t blob)
{
	struct parse_depend_ctx *pctx = (struct parse_depend_ctx *) ctx;
	struct apk_dependency *dep;
	struct apk_name *name;
127 128
	apk_blob_t bname, bop, bver = APK_BLOB_NULL;
	int mask = APK_VERSION_LESS | APK_VERSION_EQUAL | APK_VERSION_GREATER;
129 130 131 132

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

133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
	/* [!]name[<,<=,=,>=,>]ver */
	if (blob.ptr[0] == '!') {
		mask = 0;
		blob.ptr++;
		blob.len--;
	}
	if (apk_blob_cspn(blob, "<>=", &bname, &bop)) {
		int i;

		if (mask == 0)
			return -1;
		if (!apk_blob_spn(bop, "<>=", &bop, &bver))
			return -1;
		for (i = 0; i < blob.len; i++) {
			switch (blob.ptr[i]) {
			case '<':
				mask |= APK_VERSION_LESS;
				break;
			case '>':
				mask |= APK_VERSION_GREATER;
				break;
			case '=':
				mask |= APK_VERSION_EQUAL;
				break;
			}
		}
		if ((mask & (APK_VERSION_LESS|APK_VERSION_GREATER))
		    == (APK_VERSION_LESS|APK_VERSION_GREATER))
			return -1;

		if (!apk_version_validate(bver))
			return -1;
	}

167 168 169 170 171 172 173 174 175 176
	name = apk_db_get_name(pctx->db, blob);
	if (name == NULL)
		return -1;

	dep = apk_dependency_array_add(pctx->depends);
	if (dep == NULL)
		return -1;

	*dep = (struct apk_dependency){
		.name = name,
177 178
		.version = APK_BLOB_IS_NULL(bver) ? NULL : apk_blob_cstr(bver),
		.result_mask = mask,
179 180 181 182 183
	};

	return 0;
}

184 185 186 187
void apk_deps_parse(struct apk_database *db,
		    struct apk_dependency_array **depends,
		    apk_blob_t blob)
{
188
	struct parse_depend_ctx ctx = { db, depends };
189

190 191
	if (blob.len > 1 && blob.ptr[blob.len-1] == '\n')
		blob.len--;
192

193
	apk_blob_for_each_segment(blob, " ", parse_depend, &ctx);
194 195
}

196 197
int apk_deps_write(struct apk_dependency_array *deps, struct apk_ostream *os)
{
198
	int i, r, n = 0;
199 200 201 202 203 204 205 206 207 208 209

	if (deps == NULL)
		return 0;

	for (i = 0; i < deps->num; i++) {
		if (i) {
			if (os->write(os, " ", 1) != 1)
				return -1;
			n += 1;
		}

210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232
		if (deps->item[i].result_mask == APK_DEPMASK_CONFLICT) {
			if (os->write(os, "!", 1) != 1)
				return -1;
			n += 1;
		}

		r = apk_ostream_write_string(os, deps->item[i].name->name);
		if (r < 0)
			return r;
		n += r;

		if (deps->item[i].result_mask != APK_DEPMASK_CONFLICT &&
		    deps->item[i].result_mask != APK_DEPMASK_REQUIRE) {
			r = apk_ostream_write_string(os, apk_version_op_string(deps->item[i].result_mask));
			if (r < 0)
				return r;
			n += r;

			r = apk_ostream_write_string(os, deps->item[i].version);
			if (r < 0)
				return r;
			n += r;
		}
233 234 235 236 237
	}

	return n;
}

Timo Teräs's avatar
Timo Teräs committed
238
const char *apk_script_types[] = {
239 240 241 242 243 244 245 246 247 248 249 250
	[APK_SCRIPT_PRE_INSTALL]	= "pre-install",
	[APK_SCRIPT_POST_INSTALL]	= "post-install",
	[APK_SCRIPT_PRE_DEINSTALL]	= "pre-deinstall",
	[APK_SCRIPT_POST_DEINSTALL]	= "post-deinstall",
	[APK_SCRIPT_PRE_UPGRADE]	= "pre-upgrade",
	[APK_SCRIPT_POST_UPGRADE]	= "post-upgrade",
};

int apk_script_type(const char *name)
{
	int i;

Timo Teräs's avatar
Timo Teräs committed
251 252 253
	for (i = 0; i < ARRAY_SIZE(apk_script_types); i++)
		if (apk_script_types[i] &&
		    strcmp(apk_script_types[i], name) == 0)
254 255
			return i;

256
	return APK_SCRIPT_INVALID;
257 258
}

Timo Teräs's avatar
Timo Teräs committed
259 260 261
void apk_sign_ctx_init(struct apk_sign_ctx *ctx, int action)
{
	memset(ctx, 0, sizeof(struct apk_sign_ctx));
Timo Teräs's avatar
Timo Teräs committed
262 263
	ctx->action = action;
	switch (action) {
Timo Teräs's avatar
Timo Teräs committed
264 265 266 267 268
	case APK_SIGN_VERIFY:
		ctx->md = EVP_md_null();
		break;
	case APK_SIGN_GENERATE_V1:
		ctx->md = EVP_md5();
Timo Teräs's avatar
Timo Teräs committed
269 270
		ctx->control_started = 1;
		ctx->data_started = 1;
Timo Teräs's avatar
Timo Teräs committed
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393
		break;
	case APK_SIGN_GENERATE:
	default:
		action = APK_SIGN_GENERATE;
		ctx->md = EVP_sha1();
		break;
	}
}


void apk_sign_ctx_free(struct apk_sign_ctx *ctx)
{
	if (ctx->signature.data.ptr != NULL)
		free(ctx->signature.data.ptr);
	if (ctx->signature.pkey != NULL)
		EVP_PKEY_free(ctx->signature.pkey);
}

int apk_sign_ctx_process_file(struct apk_sign_ctx *ctx,
			      const struct apk_file_info *fi,
			      struct apk_istream *is)
{
	if (ctx->data_started)
		return 1;

	if (fi->name[0] != '.') {
		ctx->data_started = 1;
		ctx->control_started = 1;
		return 1;
	}

	if (ctx->control_started)
		return 1;

	if (strncmp(fi->name, ".SIGN.", 6) != 0) {
		ctx->control_started = 1;
		return 1;
	}

	/* A signature file */
	ctx->num_signatures++;

	/* Found already a trusted key */
	if (ctx->signature.pkey != NULL)
		return 0;

	if (strncmp(&fi->name[6], "RSA.", 4) == 0 ||
	    strncmp(&fi->name[6], "DSA.", 4) == 0) {
		char file[256];
	        BIO *bio = BIO_new(BIO_s_file());
		snprintf(file, sizeof(file), "/etc/apk/keys/%s", &fi->name[10]);
		if (BIO_read_filename(bio, file) > 0)
			ctx->signature.pkey =
				PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL);
		if (ctx->signature.pkey != NULL) {
			if (fi->name[6] == 'R')
				ctx->md = EVP_sha1();
			else
				ctx->md = EVP_dss1();
		}
		BIO_free(bio);
	} else
		return 0;

	if (ctx->signature.pkey != NULL)
		ctx->signature.data = apk_blob_from_istream(is, fi->size);

	return 0;
}

int apk_sign_ctx_mpart_cb(void *ctx, EVP_MD_CTX *mdctx, int part)
{
	struct apk_sign_ctx *sctx = (struct apk_sign_ctx *) ctx;
	unsigned char calculated[EVP_MAX_MD_SIZE];
	int r;

	switch (part) {
	case APK_MPART_BEGIN:
		EVP_DigestInit_ex(mdctx, sctx->md, NULL);
		break;
	case APK_MPART_BOUNDARY:
		/* We are not interested about checksums of signature,
		 * reset checksum if we are still in signatures */
		if (!sctx->control_started) {
			EVP_DigestFinal_ex(mdctx, calculated, NULL);
			EVP_DigestInit_ex(mdctx, sctx->md, NULL);
			return 0;
		}

		/* Are we in control part?. */
		if ((!sctx->control_started) || sctx->data_started)
			return 0;

		/* End of control block, make sure rest is handled as data */
		sctx->data_started = 1;

		/* Verify the signature if we have public key */
		if (sctx->action == APK_SIGN_VERIFY &&
		    sctx->signature.pkey != NULL) {
			r = EVP_VerifyFinal(mdctx,
					   (unsigned char *) sctx->signature.data.ptr,
					   sctx->signature.data.len,
					   sctx->signature.pkey);
			if (r != 1)
				return 1;

			sctx->control_verified = 1;
			EVP_DigestInit_ex(mdctx, sctx->md, NULL);
			return 0;
		} else if (sctx->action == APK_SIGN_GENERATE &&
			   sctx->has_data_checksum) {
			/* Package identity is checksum of control block */
			sctx->identity.type = EVP_MD_CTX_size(mdctx);
			EVP_DigestFinal_ex(mdctx, sctx->identity.data, NULL);
			return 1;
		} else {
			/* Reset digest for hashing data */
			EVP_DigestFinal_ex(mdctx, calculated, NULL);
			EVP_DigestInit_ex(mdctx, sctx->md, NULL);
		}
		break;
	case APK_MPART_END:
		if (sctx->action == APK_SIGN_VERIFY) {
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
			if (sctx->has_data_checksum) {
				/* Check that data checksum matches */
				EVP_DigestFinal_ex(mdctx, calculated, NULL);
				if (EVP_MD_CTX_size(mdctx) != 0 &&
				    memcmp(calculated, sctx->data_checksum,
				           EVP_MD_CTX_size(mdctx)) == 0)
					sctx->data_verified = 1;
			} else if (sctx->signature.pkey != NULL) {
				/* Assume that the data is fully signed */
				r = EVP_VerifyFinal(mdctx,
					   (unsigned char *) sctx->signature.data.ptr,
					   sctx->signature.data.len,
					   sctx->signature.pkey);
				if (r == 1) {
					sctx->control_verified = 1;
					sctx->data_verified = 1;
				}
			}
Timo Teräs's avatar
Timo Teräs committed
412
		} else if (!sctx->has_data_checksum) {
Timo Teräs's avatar
Timo Teräs committed
413 414 415 416 417 418 419 420 421
			/* Package identity is checksum of all data */
			sctx->identity.type = EVP_MD_CTX_size(mdctx);
			EVP_DigestFinal_ex(mdctx, sctx->identity.data, NULL);
		}
		return 1;
	}
	return 0;
}

422 423 424
struct read_info_ctx {
	struct apk_database *db;
	struct apk_package *pkg;
Timo Teräs's avatar
Timo Teräs committed
425 426
	struct apk_sign_ctx *sctx;
	int version;
427
	int has_install : 1;
428 429
};

430 431
int apk_pkg_add_info(struct apk_database *db, struct apk_package *pkg,
		     char field, apk_blob_t value)
Timo Teräs's avatar
Timo Teräs committed
432 433 434
{
	switch (field) {
	case 'P':
435
		pkg->name = apk_db_get_name(db, value);
Timo Teräs's avatar
Timo Teräs committed
436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
		break;
	case 'V':
		pkg->version = apk_blob_cstr(value);
		break;
	case 'T':
		pkg->description = apk_blob_cstr(value);
		break;
	case 'U':
		pkg->url = apk_blob_cstr(value);
		break;
	case 'L':
		pkg->license = apk_blob_cstr(value);
		break;
	case 'D':
		apk_deps_parse(db, &pkg->depends, value);
		break;
	case 'C':
Timo Teräs's avatar
Timo Teräs committed
453
		apk_blob_pull_csum(&value, &pkg->csum);
Timo Teräs's avatar
Timo Teräs committed
454 455
		break;
	case 'S':
456
		pkg->size = apk_blob_pull_uint(&value, 10);
Timo Teräs's avatar
Timo Teräs committed
457 458
		break;
	case 'I':
459
		pkg->installed_size = apk_blob_pull_uint(&value, 10);
Timo Teräs's avatar
Timo Teräs committed
460
		break;
461 462
	default:
		return -1;
Timo Teräs's avatar
Timo Teräs committed
463
	}
464 465
	if (APK_BLOB_IS_NULL(value))
		return -1;
Timo Teräs's avatar
Timo Teräs committed
466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
	return 0;
}

static int read_info_line(void *ctx, apk_blob_t line)
{
	static struct {
		const char *str;
		char field;
	} fields[] = {
		{ "pkgname", 'P' },
		{ "pkgver",  'V' },
		{ "pkgdesc", 'T' },
		{ "url",     'U' },
		{ "size",    'I' },
		{ "license", 'L' },
		{ "depend",  'D' },
	};
	struct read_info_ctx *ri = (struct read_info_ctx *) ctx;
	apk_blob_t l, r;
	int i;

	if (line.ptr == NULL || line.len < 1 || line.ptr[0] == '#')
		return 0;

490
	if (!apk_blob_split(line, APK_BLOB_STR(" = "), &l, &r))
Timo Teräs's avatar
Timo Teräs committed
491 492 493
		return 0;

	for (i = 0; i < ARRAY_SIZE(fields); i++) {
494
		if (apk_blob_compare(APK_BLOB_STR(fields[i].str), l) == 0) {
495
			apk_pkg_add_info(ri->db, ri->pkg, fields[i].field, r);
496
			return 0;
Timo Teräs's avatar
Timo Teräs committed
497 498 499
		}
	}

Timo Teräs's avatar
Timo Teräs committed
500 501 502 503 504 505 506 507
	if (ri->sctx->data_started == 0 &&
	    apk_blob_compare(APK_BLOB_STR("datahash"), l) == 0) {
		ri->sctx->has_data_checksum = 1;
		ri->sctx->md = EVP_sha256();
		apk_blob_pull_hexdump(
			&r, APK_BLOB_PTR_LEN(ri->sctx->data_checksum,
					     EVP_MD_size(ri->sctx->md)));
	}
508

Timo Teräs's avatar
Timo Teräs committed
509 510 511
	return 0;
}

512
static int read_info_entry(void *ctx, const struct apk_file_info *ae,
513
			   struct apk_istream *is)
514
{
Timo Teräs's avatar
Timo Teräs committed
515 516 517 518 519
	static struct {
		const char *str;
		char field;
	} fields[] = {
		{ "DESC",	'T' },
520
		{ "WWW",	'U' },
Timo Teräs's avatar
Timo Teräs committed
521 522 523
		{ "LICENSE",	'L' },
		{ "DEPEND", 	'D' },
	};
524 525 526 527
	struct read_info_ctx *ri = (struct read_info_ctx *) ctx;
	struct apk_database *db = ri->db;
	struct apk_package *pkg = ri->pkg;
	apk_blob_t name, version;
528
	char *slash;
Timo Teräs's avatar
Timo Teräs committed
529
	int i;
530

Timo Teräs's avatar
Timo Teräs committed
531
	/* Meta info and scripts */
Timo Teräs's avatar
Timo Teräs committed
532 533
	if (apk_sign_ctx_process_file(ri->sctx, ae, is) == 0)
		return 0;
534

Timo Teräs's avatar
Timo Teräs committed
535
	if (ae->name[0] == '.') {
Timo Teräs's avatar
Timo Teräs committed
536 537
		/* APK 2.0 format */
		if (strcmp(ae->name, ".PKGINFO") == 0) {
538
			apk_blob_t blob = apk_blob_from_istream(is, ae->size);
Timo Teräs's avatar
Timo Teräs committed
539 540
			apk_blob_for_each_segment(blob, "\n", read_info_line, ctx);
			free(blob.ptr);
541 542
			ri->version = 2;
		} else if (strcmp(ae->name, ".INSTALL") == 0) {
543 544
			apk_warning("Package '%s-%s' contains deprecated .INSTALL",
				    pkg->name->name, pkg->version);
Timo Teräs's avatar
Timo Teräs committed
545
		}
546 547 548 549
		return 0;
	}

	if (strncmp(ae->name, "var/db/apk/", 11) == 0) {
Timo Teräs's avatar
Timo Teräs committed
550
		/* APK 1.0 format */
551
		ri->version = 1;
Timo Teräs's avatar
Timo Teräs committed
552 553
		if (!S_ISREG(ae->mode))
			return 0;
554

Timo Teräs's avatar
Timo Teräs committed
555 556 557
		slash = strchr(&ae->name[11], '/');
		if (slash == NULL)
			return 0;
558

Timo Teräs's avatar
Timo Teräs committed
559 560 561
		if (apk_pkg_parse_name(APK_BLOB_PTR_PTR(&ae->name[11], slash-1),
				       &name, &version) < 0)
			return -1;
562

563 564
		if (pkg->name == NULL)
			pkg->name = apk_db_get_name(db, name);
Timo Teräs's avatar
Timo Teräs committed
565 566 567 568 569
		if (pkg->version == NULL)
			pkg->version = apk_blob_cstr(version);

		for (i = 0; i < ARRAY_SIZE(fields); i++) {
			if (strcmp(fields[i].str, slash+1) == 0) {
570
				apk_blob_t blob = apk_blob_from_istream(is, ae->size);
571 572
				apk_pkg_add_info(ri->db, ri->pkg, fields[i].field,
						 trim(blob));
Timo Teräs's avatar
Timo Teräs committed
573 574 575
				free(blob.ptr);
				break;
			}
576
		}
Timo Teräs's avatar
Timo Teräs committed
577 578 579
		if (apk_script_type(slash+1) == APK_SCRIPT_POST_INSTALL ||
		    apk_script_type(slash+1) == APK_SCRIPT_PRE_INSTALL)
			ri->has_install = 1;
580
	} else if (ri->version < 2) {
581 582
		/* Version 1.x packages do not contain installed size
		 * in metadata, so we calculate it here */
583
		pkg->installed_size += apk_calc_installed_size(ae->size);
Timo Teräs's avatar
Timo Teräs committed
584
	}
585 586 587 588

	return 0;
}

589
struct apk_package *apk_pkg_read(struct apk_database *db, const char *file,
Timo Teräs's avatar
Timo Teräs committed
590
				 struct apk_sign_ctx *sctx)
591 592
{
	struct read_info_ctx ctx;
593
	struct apk_file_info fi;
594
	struct apk_bstream *bs;
595
	struct apk_istream *tar;
596
	char realfile[PATH_MAX];
597
	int r;
598 599 600

	if (realpath(file, realfile) < 0)
		return NULL;
601 602
	if (apk_file_get_info(realfile, APK_CHECKSUM_NONE, &fi) < 0)
		return NULL;
603

604
	memset(&ctx, 0, sizeof(ctx));
Timo Teräs's avatar
Timo Teräs committed
605
	ctx.sctx = sctx;
606
	ctx.pkg = apk_pkg_new();
607 608 609
	if (ctx.pkg == NULL)
		return NULL;

610
	bs = apk_bstream_from_file(realfile);
Timo Teräs's avatar
Timo Teräs committed
611
	if (bs == NULL)
612 613 614 615
		goto err;

	ctx.db = db;
	ctx.has_install = 0;
616
	ctx.pkg->size = fi.size;
617

Timo Teräs's avatar
Timo Teräs committed
618
	tar = apk_bstream_gunzip_mpart(bs, apk_sign_ctx_mpart_cb, sctx);
619 620
	r = apk_tar_parse(tar, read_info_entry, &ctx);
	tar->close(tar);
Timo Teräs's avatar
Timo Teräs committed
621
	if (r < 0)
622
		goto err;
Timo Teräs's avatar
Timo Teräs committed
623
	if (ctx.pkg->name == NULL)
624
		goto err;
Timo Teräs's avatar
Timo Teräs committed
625 626
	if (sctx->action == APK_SIGN_VERIFY && !sctx->data_verified &&
	    !(apk_flags & APK_FORCE))
627
		goto err;
Timo Teräs's avatar
Timo Teräs committed
628 629
	if (sctx->action != APK_SIGN_VERIFY)
		ctx.pkg->csum = sctx->identity;
630 631 632 633

	/* Add implicit busybox dependency if there is scripts */
	if (ctx.has_install) {
		struct apk_dependency dep = {
634
			.name = apk_db_get_name(db, APK_BLOB_STR("busybox")),
635 636 637
		};
		apk_deps_add(&ctx.pkg->depends, &dep);
	}
638
	ctx.pkg->filename = strdup(realfile);
639

640
	return apk_db_pkg_add(db, ctx.pkg);
641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656
err:
	apk_pkg_free(ctx.pkg);
	return NULL;
}

void apk_pkg_free(struct apk_package *pkg)
{
	struct apk_script *script;
	struct hlist_node *c, *n;

	if (pkg == NULL)
		return;

	hlist_for_each_entry_safe(script, c, n, &pkg->scripts, script_list)
		free(script);

657 658
	if (pkg->depends)
		free(pkg->depends);
659 660 661 662 663 664 665 666 667 668 669 670 671
	if (pkg->version)
		free(pkg->version);
	if (pkg->url)
		free(pkg->url);
	if (pkg->description)
		free(pkg->description);
	if (pkg->license)
		free(pkg->license);
	free(pkg);
}

int apk_pkg_get_state(struct apk_package *pkg)
{
672
	if (list_hashed(&pkg->installed_pkgs_list))
673 674
		return APK_PKG_INSTALLED;
	return APK_PKG_NOT_INSTALLED;
675 676
}

677 678 679
void apk_pkg_set_state(struct apk_database *db, struct apk_package *pkg, int state)
{
	switch (state) {
680
	case APK_PKG_INSTALLED:
681 682 683 684 685 686
		if (!list_hashed(&pkg->installed_pkgs_list)) {
			db->installed.stats.packages++;
			list_add_tail(&pkg->installed_pkgs_list,
				      &db->installed.packages);
		}
		break;
687
	case APK_PKG_NOT_INSTALLED:
688 689 690 691 692 693 694 695
		if (list_hashed(&pkg->installed_pkgs_list)) {
			db->installed.stats.packages--;
			list_del(&pkg->installed_pkgs_list);
		}
		break;
	}
}

696
int apk_pkg_add_script(struct apk_package *pkg, struct apk_istream *is,
697 698 699 700 701 702 703 704
		       unsigned int type, unsigned int size)
{
	struct apk_script *script;
	int r;

	script = malloc(sizeof(struct apk_script) + size);
	script->type = type;
	script->size = size;
705
	r = is->read(is, script->script, size);
706 707 708 709 710 711 712 713 714
	if (r < 0) {
		free(script);
		return r;
	}

	hlist_add_head(&script->script_list, &pkg->scripts);
	return r;
}

715
int apk_pkg_run_script(struct apk_package *pkg, int root_fd,
716 717
		       unsigned int type)
{
718 719 720 721
	static const char * const environment[] = {
		"PATH=/usr/sbin:/usr/bin:/sbin:/bin",
		NULL
	};
722 723 724 725 726 727
	struct apk_script *script;
	struct hlist_node *c;
	int fd, status;
	pid_t pid;
	char fn[1024];

728
	fchdir(root_fd);
729
	hlist_for_each_entry(script, c, &pkg->scripts, script_list) {
730
		if (script->type != type)
731 732 733 734 735
			continue;

		snprintf(fn, sizeof(fn),
			"tmp/%s-%s.%s",
			pkg->name->name, pkg->version,
Timo Teräs's avatar
Timo Teräs committed
736
			apk_script_types[type]);
737 738 739 740 741 742 743 744 745 746 747 748
		fd = creat(fn, 0777);
		if (fd < 0)
			return fd;
		write(fd, script->script, script->size);
		close(fd);

		apk_message("Executing %s", &fn[4]);

		pid = fork();
		if (pid == -1)
			return -1;
		if (pid == 0) {
749 750
			if (chroot(".") < 0) {
				apk_error("chroot: %s", strerror(errno));
Timo Teräs's avatar
Timo Teräs committed
751
			} else {
Timo Teräs's avatar
Timo Teräs committed
752
				execle(fn, apk_script_types[type],
753
				       pkg->version, "", NULL, environment);
Timo Teräs's avatar
Timo Teräs committed
754
			}
755 756 757
			exit(1);
		}
		waitpid(pid, &status, 0);
Timo Teräs's avatar
Timo Teräs committed
758
		unlink(fn);
759 760 761 762 763 764 765 766
		if (WIFEXITED(status))
			return WEXITSTATUS(status);
		return -1;
	}

	return 0;
}

Timo Teräs's avatar
Timo Teräs committed
767
static int parse_index_line(void *ctx, apk_blob_t line)
768
{
Timo Teräs's avatar
Timo Teräs committed
769
	struct read_info_ctx *ri = (struct read_info_ctx *) ctx;
770

Timo Teräs's avatar
Timo Teräs committed
771 772
	if (line.len < 3 || line.ptr[1] != ':')
		return 0;
773

774
	apk_pkg_add_info(ri->db, ri->pkg, line.ptr[0], APK_BLOB_PTR_LEN(line.ptr+2, line.len-2));
775 776 777 778 779
	return 0;
}

struct apk_package *apk_pkg_parse_index_entry(struct apk_database *db, apk_blob_t blob)
{
Timo Teräs's avatar
Timo Teräs committed
780
	struct read_info_ctx ctx;
781

782
	ctx.pkg = apk_pkg_new();
Timo Teräs's avatar
Timo Teräs committed
783
	if (ctx.pkg == NULL)
784 785
		return NULL;

Timo Teräs's avatar
Timo Teräs committed
786
	ctx.db = db;
787
	ctx.version = 0;
Timo Teräs's avatar
Timo Teräs committed
788
	ctx.has_install = 0;
789

Timo Teräs's avatar
Timo Teräs committed
790 791 792 793
	apk_blob_for_each_segment(blob, "\n", parse_index_line, &ctx);

	if (ctx.pkg->name == NULL) {
		apk_pkg_free(ctx.pkg);
794 795
		apk_error("Failed to parse index entry: %.*s",
			  blob.len, blob.ptr);
Timo Teräs's avatar
Timo Teräs committed
796
		ctx.pkg = NULL;
797 798
	}

Timo Teräs's avatar
Timo Teräs committed
799
	return ctx.pkg;
800 801
}

802 803
int apk_pkg_write_index_entry(struct apk_package *info,
			      struct apk_ostream *os)
804
{
805
	char buf[512];
806 807 808 809
	apk_blob_t bbuf = APK_BLOB_BUF(buf);
	int r;

	apk_blob_push_blob(&bbuf, APK_BLOB_STR("C:"));
Timo Teräs's avatar
Timo Teräs committed
810
	apk_blob_push_csum(&bbuf, &info->csum);
811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nP:"));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR(info->name->name));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nV:"));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR(info->version));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nS:"));
	apk_blob_push_uint(&bbuf, info->size, 10);
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nI:"));
	apk_blob_push_uint(&bbuf, info->installed_size, 10);
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nT:"));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR(info->description));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nU:"));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR(info->url));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nL:"));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR(info->license));
	apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));

Timo Teräs's avatar
Timo Teräs committed
827 828 829
	if (APK_BLOB_IS_NULL(bbuf))
		return -1;

830
	if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
831
		return -1;
832 833

	if (info->depends != NULL) {
834 835 836 837 838 839 840
		if (os->write(os, "D:", 2) != 2)
			return -1;
		r = apk_deps_write(info->depends, os);
		if (r < 0)
			return r;
		if (os->write(os, "\n", 1) != 1)
			return -1;
841 842
	}

843
	return 0;
844
}
845

846 847 848 849 850
int apk_pkg_version_compare(struct apk_package *a, struct apk_package *b)
{
	return apk_version_compare(a->version, b->version);
}

851 852 853 854 855 856 857 858 859 860 861 862 863
struct apk_dependency apk_dep_from_str(struct apk_database *db,
				       char *str)
{
	apk_blob_t name = APK_BLOB_STR(str);
	char *v = str;
	int mask = APK_DEPMASK_REQUIRE;

	v = strpbrk(str, "<>=");
	if (v != NULL) {
		name.len = v - str;
		mask = apk_version_result_mask(v++);
		if (*v == '=')
			v++;
864
	}
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881
	return (struct apk_dependency) {
		.name = apk_db_get_name(db, name),
		.version = v,
		.result_mask = mask,
	};
}

struct apk_dependency apk_dep_from_pkg(struct apk_database *db,
				       struct apk_package *pkg)
{
	return (struct apk_dependency) {
		.name = apk_db_get_name(db, APK_BLOB_STR(pkg->name->name)),
		.version = pkg->version,
		.result_mask = APK_VERSION_EQUAL,
	};
}