1 /*- 2 * Copyright (c) 2009 Michihiro NAKAJIMA 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 #include "archive_platform.h" 26 __FBSDID("$FreeBSD$"); 27 28 #ifdef HAVE_ERRNO_H 29 #include <errno.h> 30 #endif 31 #ifdef HAVE_STDLIB_H 32 #include <stdlib.h> 33 #endif 34 #if HAVE_LIBXML_XMLREADER_H 35 #include <libxml/xmlreader.h> 36 #elif HAVE_BSDXML_H 37 #include <bsdxml.h> 38 #elif HAVE_EXPAT_H 39 #include <expat.h> 40 #endif 41 #ifdef HAVE_BZLIB_H 42 #include <bzlib.h> 43 #endif 44 #if HAVE_LZMA_H 45 #include <lzma.h> 46 #endif 47 #ifdef HAVE_ZLIB_H 48 #include <zlib.h> 49 #endif 50 51 #include "archive.h" 52 #include "archive_digest_private.h" 53 #include "archive_endian.h" 54 #include "archive_entry.h" 55 #include "archive_entry_locale.h" 56 #include "archive_private.h" 57 #include "archive_read_private.h" 58 59 #if (!defined(HAVE_LIBXML_XMLREADER_H) && \ 60 !defined(HAVE_BSDXML_H) && !defined(HAVE_EXPAT_H)) ||\ 61 !defined(HAVE_ZLIB_H) || \ 62 !defined(ARCHIVE_HAS_MD5) || !defined(ARCHIVE_HAS_SHA1) 63 /* 64 * xar needs several external libraries. 65 * o libxml2 or expat --- XML parser 66 * o openssl or MD5/SHA1 hash function 67 * o zlib 68 * o bzlib2 (option) 69 * o liblzma (option) 70 */ 71 int 72 archive_read_support_format_xar(struct archive *_a) 73 { 74 struct archive_read *a = (struct archive_read *)_a; 75 archive_check_magic(_a, ARCHIVE_READ_MAGIC, 76 ARCHIVE_STATE_NEW, "archive_read_support_format_xar"); 77 78 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 79 "Xar not supported on this platform"); 80 return (ARCHIVE_WARN); 81 } 82 83 #else /* Support xar format */ 84 85 /* #define DEBUG 1 */ 86 /* #define DEBUG_PRINT_TOC 1 */ 87 #if DEBUG_PRINT_TOC 88 #define PRINT_TOC(d, outbytes) do { \ 89 unsigned char *x = (unsigned char *)(uintptr_t)d; \ 90 unsigned char c = x[outbytes-1]; \ 91 x[outbytes - 1] = 0; \ 92 fprintf(stderr, "%s", x); \ 93 fprintf(stderr, "%c", c); \ 94 x[outbytes - 1] = c; \ 95 } while (0) 96 #else 97 #define PRINT_TOC(d, outbytes) 98 #endif 99 100 #define HEADER_MAGIC 0x78617221 101 #define HEADER_SIZE 28 102 #define HEADER_VERSION 1 103 #define CKSUM_NONE 0 104 #define CKSUM_SHA1 1 105 #define CKSUM_MD5 2 106 107 #define MD5_SIZE 16 108 #define SHA1_SIZE 20 109 #define MAX_SUM_SIZE 20 110 111 enum enctype { 112 NONE, 113 GZIP, 114 BZIP2, 115 LZMA, 116 XZ, 117 }; 118 119 struct chksumval { 120 int alg; 121 size_t len; 122 unsigned char val[MAX_SUM_SIZE]; 123 }; 124 125 struct chksumwork { 126 int alg; 127 #ifdef ARCHIVE_HAS_MD5 128 archive_md5_ctx md5ctx; 129 #endif 130 #ifdef ARCHIVE_HAS_SHA1 131 archive_sha1_ctx sha1ctx; 132 #endif 133 }; 134 135 struct xattr { 136 struct xattr *next; 137 struct archive_string name; 138 uint64_t id; 139 uint64_t length; 140 uint64_t offset; 141 uint64_t size; 142 enum enctype encoding; 143 struct chksumval a_sum; 144 struct chksumval e_sum; 145 struct archive_string fstype; 146 }; 147 148 struct xar_file { 149 struct xar_file *next; 150 struct xar_file *hdnext; 151 struct xar_file *parent; 152 int subdirs; 153 154 unsigned int has; 155 #define HAS_DATA 0x00001 156 #define HAS_PATHNAME 0x00002 157 #define HAS_SYMLINK 0x00004 158 #define HAS_TIME 0x00008 159 #define HAS_UID 0x00010 160 #define HAS_GID 0x00020 161 #define HAS_MODE 0x00040 162 #define HAS_TYPE 0x00080 163 #define HAS_DEV 0x00100 164 #define HAS_DEVMAJOR 0x00200 165 #define HAS_DEVMINOR 0x00400 166 #define HAS_INO 0x00800 167 #define HAS_FFLAGS 0x01000 168 #define HAS_XATTR 0x02000 169 #define HAS_ACL 0x04000 170 #define HAS_CTIME 0x08000 171 #define HAS_MTIME 0x10000 172 #define HAS_ATIME 0x20000 173 174 uint64_t id; 175 uint64_t length; 176 uint64_t offset; 177 uint64_t size; 178 enum enctype encoding; 179 struct chksumval a_sum; 180 struct chksumval e_sum; 181 struct archive_string pathname; 182 struct archive_string symlink; 183 time_t ctime; 184 time_t mtime; 185 time_t atime; 186 struct archive_string uname; 187 int64_t uid; 188 struct archive_string gname; 189 int64_t gid; 190 mode_t mode; 191 dev_t dev; 192 dev_t devmajor; 193 dev_t devminor; 194 int64_t ino64; 195 struct archive_string fflags_text; 196 unsigned int link; 197 unsigned int nlink; 198 struct archive_string hardlink; 199 struct xattr *xattr_list; 200 }; 201 202 struct hdlink { 203 struct hdlink *next; 204 205 unsigned int id; 206 int cnt; 207 struct xar_file *files; 208 }; 209 210 struct heap_queue { 211 struct xar_file **files; 212 int allocated; 213 int used; 214 }; 215 216 enum xmlstatus { 217 INIT, 218 XAR, 219 TOC, 220 TOC_CREATION_TIME, 221 TOC_CHECKSUM, 222 TOC_CHECKSUM_OFFSET, 223 TOC_CHECKSUM_SIZE, 224 TOC_FILE, 225 FILE_DATA, 226 FILE_DATA_LENGTH, 227 FILE_DATA_OFFSET, 228 FILE_DATA_SIZE, 229 FILE_DATA_ENCODING, 230 FILE_DATA_A_CHECKSUM, 231 FILE_DATA_E_CHECKSUM, 232 FILE_DATA_CONTENT, 233 FILE_EA, 234 FILE_EA_LENGTH, 235 FILE_EA_OFFSET, 236 FILE_EA_SIZE, 237 FILE_EA_ENCODING, 238 FILE_EA_A_CHECKSUM, 239 FILE_EA_E_CHECKSUM, 240 FILE_EA_NAME, 241 FILE_EA_FSTYPE, 242 FILE_CTIME, 243 FILE_MTIME, 244 FILE_ATIME, 245 FILE_GROUP, 246 FILE_GID, 247 FILE_USER, 248 FILE_UID, 249 FILE_MODE, 250 FILE_DEVICE, 251 FILE_DEVICE_MAJOR, 252 FILE_DEVICE_MINOR, 253 FILE_DEVICENO, 254 FILE_INODE, 255 FILE_LINK, 256 FILE_TYPE, 257 FILE_NAME, 258 FILE_ACL, 259 FILE_ACL_DEFAULT, 260 FILE_ACL_ACCESS, 261 FILE_ACL_APPLEEXTENDED, 262 /* BSD file flags. */ 263 FILE_FLAGS, 264 FILE_FLAGS_USER_NODUMP, 265 FILE_FLAGS_USER_IMMUTABLE, 266 FILE_FLAGS_USER_APPEND, 267 FILE_FLAGS_USER_OPAQUE, 268 FILE_FLAGS_USER_NOUNLINK, 269 FILE_FLAGS_SYS_ARCHIVED, 270 FILE_FLAGS_SYS_IMMUTABLE, 271 FILE_FLAGS_SYS_APPEND, 272 FILE_FLAGS_SYS_NOUNLINK, 273 FILE_FLAGS_SYS_SNAPSHOT, 274 /* Linux file flags. */ 275 FILE_EXT2, 276 FILE_EXT2_SecureDeletion, 277 FILE_EXT2_Undelete, 278 FILE_EXT2_Compress, 279 FILE_EXT2_Synchronous, 280 FILE_EXT2_Immutable, 281 FILE_EXT2_AppendOnly, 282 FILE_EXT2_NoDump, 283 FILE_EXT2_NoAtime, 284 FILE_EXT2_CompDirty, 285 FILE_EXT2_CompBlock, 286 FILE_EXT2_NoCompBlock, 287 FILE_EXT2_CompError, 288 FILE_EXT2_BTree, 289 FILE_EXT2_HashIndexed, 290 FILE_EXT2_iMagic, 291 FILE_EXT2_Journaled, 292 FILE_EXT2_NoTail, 293 FILE_EXT2_DirSync, 294 FILE_EXT2_TopDir, 295 FILE_EXT2_Reserved, 296 UNKNOWN, 297 }; 298 299 struct unknown_tag { 300 struct unknown_tag *next; 301 struct archive_string name; 302 }; 303 304 struct xar { 305 uint64_t offset; /* Current position in the file. */ 306 int64_t total; 307 uint64_t h_base; 308 int end_of_file; 309 #define OUTBUFF_SIZE (1024 * 64) 310 unsigned char *outbuff; 311 312 enum xmlstatus xmlsts; 313 enum xmlstatus xmlsts_unknown; 314 struct unknown_tag *unknowntags; 315 int base64text; 316 317 /* 318 * TOC 319 */ 320 uint64_t toc_remaining; 321 uint64_t toc_total; 322 uint64_t toc_chksum_offset; 323 uint64_t toc_chksum_size; 324 325 /* 326 * For Decoding data. 327 */ 328 enum enctype rd_encoding; 329 z_stream stream; 330 int stream_valid; 331 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR) 332 bz_stream bzstream; 333 int bzstream_valid; 334 #endif 335 #if HAVE_LZMA_H && HAVE_LIBLZMA 336 lzma_stream lzstream; 337 int lzstream_valid; 338 #endif 339 /* 340 * For Checksum data. 341 */ 342 struct chksumwork a_sumwrk; 343 struct chksumwork e_sumwrk; 344 345 struct xar_file *file; /* current reading file. */ 346 struct xattr *xattr; /* current reading extended attribute. */ 347 struct heap_queue file_queue; 348 struct xar_file *hdlink_orgs; 349 struct hdlink *hdlink_list; 350 351 int entry_init; 352 uint64_t entry_total; 353 uint64_t entry_remaining; 354 size_t entry_unconsumed; 355 uint64_t entry_size; 356 enum enctype entry_encoding; 357 struct chksumval entry_a_sum; 358 struct chksumval entry_e_sum; 359 360 struct archive_string_conv *sconv; 361 }; 362 363 struct xmlattr { 364 struct xmlattr *next; 365 char *name; 366 char *value; 367 }; 368 369 struct xmlattr_list { 370 struct xmlattr *first; 371 struct xmlattr **last; 372 }; 373 374 static int xar_bid(struct archive_read *, int); 375 static int xar_read_header(struct archive_read *, 376 struct archive_entry *); 377 static int xar_read_data(struct archive_read *, 378 const void **, size_t *, int64_t *); 379 static int xar_read_data_skip(struct archive_read *); 380 static int xar_cleanup(struct archive_read *); 381 static int move_reading_point(struct archive_read *, uint64_t); 382 static int rd_contents_init(struct archive_read *, 383 enum enctype, int, int); 384 static int rd_contents(struct archive_read *, const void **, 385 size_t *, size_t *, uint64_t); 386 static uint64_t atol10(const char *, size_t); 387 static int64_t atol8(const char *, size_t); 388 static size_t atohex(unsigned char *, size_t, const char *, size_t); 389 static time_t parse_time(const char *p, size_t n); 390 static int heap_add_entry(struct archive_read *a, 391 struct heap_queue *, struct xar_file *); 392 static struct xar_file *heap_get_entry(struct heap_queue *); 393 static int add_link(struct archive_read *, 394 struct xar *, struct xar_file *); 395 static void checksum_init(struct archive_read *, int, int); 396 static void checksum_update(struct archive_read *, const void *, 397 size_t, const void *, size_t); 398 static int checksum_final(struct archive_read *, const void *, 399 size_t, const void *, size_t); 400 static void checksum_cleanup(struct archive_read *); 401 static int decompression_init(struct archive_read *, enum enctype); 402 static int decompress(struct archive_read *, const void **, 403 size_t *, const void *, size_t *); 404 static int decompression_cleanup(struct archive_read *); 405 static void xmlattr_cleanup(struct xmlattr_list *); 406 static int file_new(struct archive_read *, 407 struct xar *, struct xmlattr_list *); 408 static void file_free(struct xar_file *); 409 static int xattr_new(struct archive_read *, 410 struct xar *, struct xmlattr_list *); 411 static void xattr_free(struct xattr *); 412 static int getencoding(struct xmlattr_list *); 413 static int getsumalgorithm(struct xmlattr_list *); 414 static int unknowntag_start(struct archive_read *, 415 struct xar *, const char *); 416 static void unknowntag_end(struct xar *, const char *); 417 static int xml_start(struct archive_read *, 418 const char *, struct xmlattr_list *); 419 static void xml_end(void *, const char *); 420 static void xml_data(void *, const char *, int); 421 static int xml_parse_file_flags(struct xar *, const char *); 422 static int xml_parse_file_ext2(struct xar *, const char *); 423 #if defined(HAVE_LIBXML_XMLREADER_H) 424 static int xml2_xmlattr_setup(struct archive_read *, 425 struct xmlattr_list *, xmlTextReaderPtr); 426 static int xml2_read_cb(void *, char *, int); 427 static int xml2_close_cb(void *); 428 static void xml2_error_hdr(void *, const char *, xmlParserSeverities, 429 xmlTextReaderLocatorPtr); 430 static int xml2_read_toc(struct archive_read *); 431 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) 432 struct expat_userData { 433 int state; 434 struct archive_read *archive; 435 }; 436 static int expat_xmlattr_setup(struct archive_read *, 437 struct xmlattr_list *, const XML_Char **); 438 static void expat_start_cb(void *, const XML_Char *, const XML_Char **); 439 static void expat_end_cb(void *, const XML_Char *); 440 static void expat_data_cb(void *, const XML_Char *, int); 441 static int expat_read_toc(struct archive_read *); 442 #endif 443 444 int 445 archive_read_support_format_xar(struct archive *_a) 446 { 447 struct xar *xar; 448 struct archive_read *a = (struct archive_read *)_a; 449 int r; 450 451 archive_check_magic(_a, ARCHIVE_READ_MAGIC, 452 ARCHIVE_STATE_NEW, "archive_read_support_format_xar"); 453 454 xar = (struct xar *)calloc(1, sizeof(*xar)); 455 if (xar == NULL) { 456 archive_set_error(&a->archive, ENOMEM, 457 "Can't allocate xar data"); 458 return (ARCHIVE_FATAL); 459 } 460 461 /* initialize xar->file_queue */ 462 xar->file_queue.allocated = 0; 463 xar->file_queue.used = 0; 464 xar->file_queue.files = NULL; 465 466 r = __archive_read_register_format(a, 467 xar, 468 "xar", 469 xar_bid, 470 NULL, 471 xar_read_header, 472 xar_read_data, 473 xar_read_data_skip, 474 NULL, 475 xar_cleanup, 476 NULL, 477 NULL); 478 if (r != ARCHIVE_OK) 479 free(xar); 480 return (r); 481 } 482 483 static int 484 xar_bid(struct archive_read *a, int best_bid) 485 { 486 const unsigned char *b; 487 int bid; 488 489 (void)best_bid; /* UNUSED */ 490 491 b = __archive_read_ahead(a, HEADER_SIZE, NULL); 492 if (b == NULL) 493 return (-1); 494 495 bid = 0; 496 /* 497 * Verify magic code 498 */ 499 if (archive_be32dec(b) != HEADER_MAGIC) 500 return (0); 501 bid += 32; 502 /* 503 * Verify header size 504 */ 505 if (archive_be16dec(b+4) != HEADER_SIZE) 506 return (0); 507 bid += 16; 508 /* 509 * Verify header version 510 */ 511 if (archive_be16dec(b+6) != HEADER_VERSION) 512 return (0); 513 bid += 16; 514 /* 515 * Verify type of checksum 516 */ 517 switch (archive_be32dec(b+24)) { 518 case CKSUM_NONE: 519 case CKSUM_SHA1: 520 case CKSUM_MD5: 521 bid += 32; 522 break; 523 default: 524 return (0); 525 } 526 527 return (bid); 528 } 529 530 static int 531 read_toc(struct archive_read *a) 532 { 533 struct xar *xar; 534 struct xar_file *file; 535 const unsigned char *b; 536 uint64_t toc_compressed_size; 537 uint64_t toc_uncompressed_size; 538 uint32_t toc_chksum_alg; 539 ssize_t bytes; 540 int r; 541 542 xar = (struct xar *)(a->format->data); 543 544 /* 545 * Read xar header. 546 */ 547 b = __archive_read_ahead(a, HEADER_SIZE, &bytes); 548 if (bytes < 0) 549 return ((int)bytes); 550 if (bytes < HEADER_SIZE) { 551 archive_set_error(&a->archive, 552 ARCHIVE_ERRNO_FILE_FORMAT, 553 "Truncated archive header"); 554 return (ARCHIVE_FATAL); 555 } 556 557 if (archive_be32dec(b) != HEADER_MAGIC) { 558 archive_set_error(&a->archive, 559 ARCHIVE_ERRNO_FILE_FORMAT, 560 "Invalid header magic"); 561 return (ARCHIVE_FATAL); 562 } 563 if (archive_be16dec(b+6) != HEADER_VERSION) { 564 archive_set_error(&a->archive, 565 ARCHIVE_ERRNO_FILE_FORMAT, 566 "Unsupported header version(%d)", 567 archive_be16dec(b+6)); 568 return (ARCHIVE_FATAL); 569 } 570 toc_compressed_size = archive_be64dec(b+8); 571 xar->toc_remaining = toc_compressed_size; 572 toc_uncompressed_size = archive_be64dec(b+16); 573 toc_chksum_alg = archive_be32dec(b+24); 574 __archive_read_consume(a, HEADER_SIZE); 575 xar->offset += HEADER_SIZE; 576 xar->toc_total = 0; 577 578 /* 579 * Read TOC(Table of Contents). 580 */ 581 /* Initialize reading contents. */ 582 r = move_reading_point(a, HEADER_SIZE); 583 if (r != ARCHIVE_OK) 584 return (r); 585 r = rd_contents_init(a, GZIP, toc_chksum_alg, CKSUM_NONE); 586 if (r != ARCHIVE_OK) 587 return (r); 588 589 #ifdef HAVE_LIBXML_XMLREADER_H 590 r = xml2_read_toc(a); 591 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) 592 r = expat_read_toc(a); 593 #endif 594 if (r != ARCHIVE_OK) 595 return (r); 596 597 /* Set 'The HEAP' base. */ 598 xar->h_base = xar->offset; 599 if (xar->toc_total != toc_uncompressed_size) { 600 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 601 "TOC uncompressed size error"); 602 return (ARCHIVE_FATAL); 603 } 604 605 /* 606 * Checksum TOC 607 */ 608 if (toc_chksum_alg != CKSUM_NONE) { 609 r = move_reading_point(a, xar->toc_chksum_offset); 610 if (r != ARCHIVE_OK) 611 return (r); 612 b = __archive_read_ahead(a, 613 (size_t)xar->toc_chksum_size, &bytes); 614 if (bytes < 0) 615 return ((int)bytes); 616 if ((uint64_t)bytes < xar->toc_chksum_size) { 617 archive_set_error(&a->archive, 618 ARCHIVE_ERRNO_FILE_FORMAT, 619 "Truncated archive file"); 620 return (ARCHIVE_FATAL); 621 } 622 r = checksum_final(a, b, 623 (size_t)xar->toc_chksum_size, NULL, 0); 624 __archive_read_consume(a, xar->toc_chksum_size); 625 xar->offset += xar->toc_chksum_size; 626 if (r != ARCHIVE_OK) 627 return (ARCHIVE_FATAL); 628 } 629 630 /* 631 * Connect hardlinked files. 632 */ 633 for (file = xar->hdlink_orgs; file != NULL; file = file->hdnext) { 634 struct hdlink **hdlink; 635 636 for (hdlink = &(xar->hdlink_list); *hdlink != NULL; 637 hdlink = &((*hdlink)->next)) { 638 if ((*hdlink)->id == file->id) { 639 struct hdlink *hltmp; 640 struct xar_file *f2; 641 int nlink = (*hdlink)->cnt + 1; 642 643 file->nlink = nlink; 644 for (f2 = (*hdlink)->files; f2 != NULL; 645 f2 = f2->hdnext) { 646 f2->nlink = nlink; 647 archive_string_copy( 648 &(f2->hardlink), &(file->pathname)); 649 } 650 /* Remove resolved files from hdlist_list. */ 651 hltmp = *hdlink; 652 *hdlink = hltmp->next; 653 free(hltmp); 654 break; 655 } 656 } 657 } 658 a->archive.archive_format = ARCHIVE_FORMAT_XAR; 659 a->archive.archive_format_name = "xar"; 660 661 return (ARCHIVE_OK); 662 } 663 664 static int 665 xar_read_header(struct archive_read *a, struct archive_entry *entry) 666 { 667 struct xar *xar; 668 struct xar_file *file; 669 struct xattr *xattr; 670 int r; 671 672 xar = (struct xar *)(a->format->data); 673 r = ARCHIVE_OK; 674 675 if (xar->offset == 0) { 676 /* Create a character conversion object. */ 677 if (xar->sconv == NULL) { 678 xar->sconv = archive_string_conversion_from_charset( 679 &(a->archive), "UTF-8", 1); 680 if (xar->sconv == NULL) 681 return (ARCHIVE_FATAL); 682 } 683 684 /* Read TOC. */ 685 r = read_toc(a); 686 if (r != ARCHIVE_OK) 687 return (r); 688 } 689 690 for (;;) { 691 file = xar->file = heap_get_entry(&(xar->file_queue)); 692 if (file == NULL) { 693 xar->end_of_file = 1; 694 return (ARCHIVE_EOF); 695 } 696 if ((file->mode & AE_IFMT) != AE_IFDIR) 697 break; 698 if (file->has != (HAS_PATHNAME | HAS_TYPE)) 699 break; 700 /* 701 * If a file type is a directory and it does not have 702 * any metadata, do not export. 703 */ 704 file_free(file); 705 } 706 if (file->has & HAS_ATIME) { 707 archive_entry_set_atime(entry, file->atime, 0); 708 } 709 if (file->has & HAS_CTIME) { 710 archive_entry_set_ctime(entry, file->ctime, 0); 711 } 712 if (file->has & HAS_MTIME) { 713 archive_entry_set_mtime(entry, file->mtime, 0); 714 } 715 archive_entry_set_gid(entry, file->gid); 716 if (file->gname.length > 0 && 717 archive_entry_copy_gname_l(entry, file->gname.s, 718 archive_strlen(&(file->gname)), xar->sconv) != 0) { 719 if (errno == ENOMEM) { 720 archive_set_error(&a->archive, ENOMEM, 721 "Can't allocate memory for Gname"); 722 return (ARCHIVE_FATAL); 723 } 724 archive_set_error(&a->archive, 725 ARCHIVE_ERRNO_FILE_FORMAT, 726 "Gname cannot be converted from %s to current locale.", 727 archive_string_conversion_charset_name(xar->sconv)); 728 r = ARCHIVE_WARN; 729 } 730 archive_entry_set_uid(entry, file->uid); 731 if (file->uname.length > 0 && 732 archive_entry_copy_uname_l(entry, file->uname.s, 733 archive_strlen(&(file->uname)), xar->sconv) != 0) { 734 if (errno == ENOMEM) { 735 archive_set_error(&a->archive, ENOMEM, 736 "Can't allocate memory for Uname"); 737 return (ARCHIVE_FATAL); 738 } 739 archive_set_error(&a->archive, 740 ARCHIVE_ERRNO_FILE_FORMAT, 741 "Uname cannot be converted from %s to current locale.", 742 archive_string_conversion_charset_name(xar->sconv)); 743 r = ARCHIVE_WARN; 744 } 745 archive_entry_set_mode(entry, file->mode); 746 if (archive_entry_copy_pathname_l(entry, file->pathname.s, 747 archive_strlen(&(file->pathname)), xar->sconv) != 0) { 748 if (errno == ENOMEM) { 749 archive_set_error(&a->archive, ENOMEM, 750 "Can't allocate memory for Pathname"); 751 return (ARCHIVE_FATAL); 752 } 753 archive_set_error(&a->archive, 754 ARCHIVE_ERRNO_FILE_FORMAT, 755 "Pathname cannot be converted from %s to current locale.", 756 archive_string_conversion_charset_name(xar->sconv)); 757 r = ARCHIVE_WARN; 758 } 759 760 761 if (file->symlink.length > 0 && 762 archive_entry_copy_symlink_l(entry, file->symlink.s, 763 archive_strlen(&(file->symlink)), xar->sconv) != 0) { 764 if (errno == ENOMEM) { 765 archive_set_error(&a->archive, ENOMEM, 766 "Can't allocate memory for Linkname"); 767 return (ARCHIVE_FATAL); 768 } 769 archive_set_error(&a->archive, 770 ARCHIVE_ERRNO_FILE_FORMAT, 771 "Linkname cannot be converted from %s to current locale.", 772 archive_string_conversion_charset_name(xar->sconv)); 773 r = ARCHIVE_WARN; 774 } 775 /* Set proper nlink. */ 776 if ((file->mode & AE_IFMT) == AE_IFDIR) 777 archive_entry_set_nlink(entry, file->subdirs + 2); 778 else 779 archive_entry_set_nlink(entry, file->nlink); 780 archive_entry_set_size(entry, file->size); 781 if (archive_strlen(&(file->hardlink)) > 0) 782 archive_entry_set_hardlink(entry, file->hardlink.s); 783 archive_entry_set_ino64(entry, file->ino64); 784 if (file->has & HAS_DEV) 785 archive_entry_set_dev(entry, file->dev); 786 if (file->has & HAS_DEVMAJOR) 787 archive_entry_set_devmajor(entry, file->devmajor); 788 if (file->has & HAS_DEVMINOR) 789 archive_entry_set_devminor(entry, file->devminor); 790 if (archive_strlen(&(file->fflags_text)) > 0) 791 archive_entry_copy_fflags_text(entry, file->fflags_text.s); 792 793 xar->entry_init = 1; 794 xar->entry_total = 0; 795 xar->entry_remaining = file->length; 796 xar->entry_size = file->size; 797 xar->entry_encoding = file->encoding; 798 xar->entry_a_sum = file->a_sum; 799 xar->entry_e_sum = file->e_sum; 800 /* 801 * Read extended attributes. 802 */ 803 xattr = file->xattr_list; 804 while (xattr != NULL) { 805 const void *d; 806 size_t outbytes = 0; 807 size_t used = 0; 808 809 r = move_reading_point(a, xattr->offset); 810 if (r != ARCHIVE_OK) 811 break; 812 r = rd_contents_init(a, xattr->encoding, 813 xattr->a_sum.alg, xattr->e_sum.alg); 814 if (r != ARCHIVE_OK) 815 break; 816 d = NULL; 817 r = rd_contents(a, &d, &outbytes, &used, xattr->length); 818 if (r != ARCHIVE_OK) 819 break; 820 if (outbytes != xattr->size) { 821 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC, 822 "Decompressed size error"); 823 r = ARCHIVE_FATAL; 824 break; 825 } 826 r = checksum_final(a, 827 xattr->a_sum.val, xattr->a_sum.len, 828 xattr->e_sum.val, xattr->e_sum.len); 829 if (r != ARCHIVE_OK) { 830 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC, 831 "Xattr checksum error"); 832 r = ARCHIVE_WARN; 833 break; 834 } 835 if (xattr->name.s == NULL) { 836 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC, 837 "Xattr name error"); 838 r = ARCHIVE_WARN; 839 break; 840 } 841 archive_entry_xattr_add_entry(entry, 842 xattr->name.s, d, outbytes); 843 xattr = xattr->next; 844 } 845 if (r != ARCHIVE_OK) { 846 file_free(file); 847 return (r); 848 } 849 850 if (xar->entry_remaining > 0) 851 /* Move reading point to the beginning of current 852 * file contents. */ 853 r = move_reading_point(a, file->offset); 854 else 855 r = ARCHIVE_OK; 856 857 file_free(file); 858 return (r); 859 } 860 861 static int 862 xar_read_data(struct archive_read *a, 863 const void **buff, size_t *size, int64_t *offset) 864 { 865 struct xar *xar; 866 size_t used = 0; 867 int r; 868 869 xar = (struct xar *)(a->format->data); 870 871 if (xar->entry_unconsumed) { 872 __archive_read_consume(a, xar->entry_unconsumed); 873 xar->entry_unconsumed = 0; 874 } 875 876 if (xar->end_of_file || xar->entry_remaining <= 0) { 877 r = ARCHIVE_EOF; 878 goto abort_read_data; 879 } 880 881 if (xar->entry_init) { 882 r = rd_contents_init(a, xar->entry_encoding, 883 xar->entry_a_sum.alg, xar->entry_e_sum.alg); 884 if (r != ARCHIVE_OK) { 885 xar->entry_remaining = 0; 886 return (r); 887 } 888 xar->entry_init = 0; 889 } 890 891 *buff = NULL; 892 r = rd_contents(a, buff, size, &used, xar->entry_remaining); 893 if (r != ARCHIVE_OK) 894 goto abort_read_data; 895 896 *offset = xar->entry_total; 897 xar->entry_total += *size; 898 xar->total += *size; 899 xar->offset += used; 900 xar->entry_remaining -= used; 901 xar->entry_unconsumed = used; 902 903 if (xar->entry_remaining == 0) { 904 if (xar->entry_total != xar->entry_size) { 905 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC, 906 "Decompressed size error"); 907 r = ARCHIVE_FATAL; 908 goto abort_read_data; 909 } 910 r = checksum_final(a, 911 xar->entry_a_sum.val, xar->entry_a_sum.len, 912 xar->entry_e_sum.val, xar->entry_e_sum.len); 913 if (r != ARCHIVE_OK) 914 goto abort_read_data; 915 } 916 917 return (ARCHIVE_OK); 918 abort_read_data: 919 *buff = NULL; 920 *size = 0; 921 *offset = xar->total; 922 return (r); 923 } 924 925 static int 926 xar_read_data_skip(struct archive_read *a) 927 { 928 struct xar *xar; 929 int64_t bytes_skipped; 930 931 xar = (struct xar *)(a->format->data); 932 if (xar->end_of_file) 933 return (ARCHIVE_EOF); 934 bytes_skipped = __archive_read_consume(a, xar->entry_remaining + 935 xar->entry_unconsumed); 936 if (bytes_skipped < 0) 937 return (ARCHIVE_FATAL); 938 xar->offset += bytes_skipped; 939 xar->entry_unconsumed = 0; 940 return (ARCHIVE_OK); 941 } 942 943 static int 944 xar_cleanup(struct archive_read *a) 945 { 946 struct xar *xar; 947 struct hdlink *hdlink; 948 int i; 949 int r; 950 951 xar = (struct xar *)(a->format->data); 952 checksum_cleanup(a); 953 r = decompression_cleanup(a); 954 hdlink = xar->hdlink_list; 955 while (hdlink != NULL) { 956 struct hdlink *next = hdlink->next; 957 958 free(hdlink); 959 hdlink = next; 960 } 961 for (i = 0; i < xar->file_queue.used; i++) 962 file_free(xar->file_queue.files[i]); 963 free(xar->file_queue.files); 964 while (xar->unknowntags != NULL) { 965 struct unknown_tag *tag; 966 967 tag = xar->unknowntags; 968 xar->unknowntags = tag->next; 969 archive_string_free(&(tag->name)); 970 free(tag); 971 } 972 free(xar->outbuff); 973 free(xar); 974 a->format->data = NULL; 975 return (r); 976 } 977 978 static int 979 move_reading_point(struct archive_read *a, uint64_t offset) 980 { 981 struct xar *xar; 982 983 xar = (struct xar *)(a->format->data); 984 if (xar->offset - xar->h_base != offset) { 985 /* Seek forward to the start of file contents. */ 986 int64_t step; 987 988 step = offset - (xar->offset - xar->h_base); 989 if (step > 0) { 990 step = __archive_read_consume(a, step); 991 if (step < 0) 992 return ((int)step); 993 xar->offset += step; 994 } else { 995 int64_t pos = __archive_read_seek(a, xar->h_base + offset, SEEK_SET); 996 if (pos == ARCHIVE_FAILED) { 997 archive_set_error(&(a->archive), 998 ARCHIVE_ERRNO_MISC, 999 "Cannot seek."); 1000 return (ARCHIVE_FAILED); 1001 } 1002 xar->offset = pos; 1003 } 1004 } 1005 return (ARCHIVE_OK); 1006 } 1007 1008 static int 1009 rd_contents_init(struct archive_read *a, enum enctype encoding, 1010 int a_sum_alg, int e_sum_alg) 1011 { 1012 int r; 1013 1014 /* Init decompress library. */ 1015 if ((r = decompression_init(a, encoding)) != ARCHIVE_OK) 1016 return (r); 1017 /* Init checksum library. */ 1018 checksum_init(a, a_sum_alg, e_sum_alg); 1019 return (ARCHIVE_OK); 1020 } 1021 1022 static int 1023 rd_contents(struct archive_read *a, const void **buff, size_t *size, 1024 size_t *used, uint64_t remaining) 1025 { 1026 const unsigned char *b; 1027 ssize_t bytes; 1028 1029 /* Get whatever bytes are immediately available. */ 1030 b = __archive_read_ahead(a, 1, &bytes); 1031 if (bytes < 0) 1032 return ((int)bytes); 1033 if (bytes == 0) { 1034 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1035 "Truncated archive file"); 1036 return (ARCHIVE_FATAL); 1037 } 1038 if ((uint64_t)bytes > remaining) 1039 bytes = (ssize_t)remaining; 1040 1041 /* 1042 * Decompress contents of file. 1043 */ 1044 *used = bytes; 1045 if (decompress(a, buff, size, b, used) != ARCHIVE_OK) 1046 return (ARCHIVE_FATAL); 1047 1048 /* 1049 * Update checksum of a compressed data and a extracted data. 1050 */ 1051 checksum_update(a, b, *used, *buff, *size); 1052 1053 return (ARCHIVE_OK); 1054 } 1055 1056 /* 1057 * Note that this implementation does not (and should not!) obey 1058 * locale settings; you cannot simply substitute strtol here, since 1059 * it does obey locale. 1060 */ 1061 1062 static uint64_t 1063 atol10(const char *p, size_t char_cnt) 1064 { 1065 uint64_t l; 1066 int digit; 1067 1068 if (char_cnt == 0) 1069 return (0); 1070 1071 l = 0; 1072 digit = *p - '0'; 1073 while (digit >= 0 && digit < 10 && char_cnt-- > 0) { 1074 l = (l * 10) + digit; 1075 digit = *++p - '0'; 1076 } 1077 return (l); 1078 } 1079 1080 static int64_t 1081 atol8(const char *p, size_t char_cnt) 1082 { 1083 int64_t l; 1084 int digit; 1085 1086 if (char_cnt == 0) 1087 return (0); 1088 1089 l = 0; 1090 while (char_cnt-- > 0) { 1091 if (*p >= '0' && *p <= '7') 1092 digit = *p - '0'; 1093 else 1094 break; 1095 p++; 1096 l <<= 3; 1097 l |= digit; 1098 } 1099 return (l); 1100 } 1101 1102 static size_t 1103 atohex(unsigned char *b, size_t bsize, const char *p, size_t psize) 1104 { 1105 size_t fbsize = bsize; 1106 1107 while (bsize && psize > 1) { 1108 unsigned char x; 1109 1110 if (p[0] >= 'a' && p[0] <= 'z') 1111 x = (p[0] - 'a' + 0x0a) << 4; 1112 else if (p[0] >= 'A' && p[0] <= 'Z') 1113 x = (p[0] - 'A' + 0x0a) << 4; 1114 else if (p[0] >= '0' && p[0] <= '9') 1115 x = (p[0] - '0') << 4; 1116 else 1117 return (-1); 1118 if (p[1] >= 'a' && p[1] <= 'z') 1119 x |= p[1] - 'a' + 0x0a; 1120 else if (p[1] >= 'A' && p[1] <= 'Z') 1121 x |= p[1] - 'A' + 0x0a; 1122 else if (p[1] >= '0' && p[1] <= '9') 1123 x |= p[1] - '0'; 1124 else 1125 return (-1); 1126 1127 *b++ = x; 1128 bsize--; 1129 p += 2; 1130 psize -= 2; 1131 } 1132 return (fbsize - bsize); 1133 } 1134 1135 static time_t 1136 time_from_tm(struct tm *t) 1137 { 1138 #if HAVE_TIMEGM 1139 /* Use platform timegm() if available. */ 1140 return (timegm(t)); 1141 #elif HAVE__MKGMTIME64 1142 return (_mkgmtime64(t)); 1143 #else 1144 /* Else use direct calculation using POSIX assumptions. */ 1145 /* First, fix up tm_yday based on the year/month/day. */ 1146 mktime(t); 1147 /* Then we can compute timegm() from first principles. */ 1148 return (t->tm_sec 1149 + t->tm_min * 60 1150 + t->tm_hour * 3600 1151 + t->tm_yday * 86400 1152 + (t->tm_year - 70) * 31536000 1153 + ((t->tm_year - 69) / 4) * 86400 1154 - ((t->tm_year - 1) / 100) * 86400 1155 + ((t->tm_year + 299) / 400) * 86400); 1156 #endif 1157 } 1158 1159 static time_t 1160 parse_time(const char *p, size_t n) 1161 { 1162 struct tm tm; 1163 time_t t = 0; 1164 int64_t data; 1165 1166 memset(&tm, 0, sizeof(tm)); 1167 if (n != 20) 1168 return (t); 1169 data = atol10(p, 4); 1170 if (data < 1900) 1171 return (t); 1172 tm.tm_year = (int)data - 1900; 1173 p += 4; 1174 if (*p++ != '-') 1175 return (t); 1176 data = atol10(p, 2); 1177 if (data < 1 || data > 12) 1178 return (t); 1179 tm.tm_mon = (int)data -1; 1180 p += 2; 1181 if (*p++ != '-') 1182 return (t); 1183 data = atol10(p, 2); 1184 if (data < 1 || data > 31) 1185 return (t); 1186 tm.tm_mday = (int)data; 1187 p += 2; 1188 if (*p++ != 'T') 1189 return (t); 1190 data = atol10(p, 2); 1191 if (data < 0 || data > 23) 1192 return (t); 1193 tm.tm_hour = (int)data; 1194 p += 2; 1195 if (*p++ != ':') 1196 return (t); 1197 data = atol10(p, 2); 1198 if (data < 0 || data > 59) 1199 return (t); 1200 tm.tm_min = (int)data; 1201 p += 2; 1202 if (*p++ != ':') 1203 return (t); 1204 data = atol10(p, 2); 1205 if (data < 0 || data > 60) 1206 return (t); 1207 tm.tm_sec = (int)data; 1208 #if 0 1209 p += 2; 1210 if (*p != 'Z') 1211 return (t); 1212 #endif 1213 1214 t = time_from_tm(&tm); 1215 1216 return (t); 1217 } 1218 1219 static int 1220 heap_add_entry(struct archive_read *a, 1221 struct heap_queue *heap, struct xar_file *file) 1222 { 1223 uint64_t file_id, parent_id; 1224 int hole, parent; 1225 1226 /* Expand our pending files list as necessary. */ 1227 if (heap->used >= heap->allocated) { 1228 struct xar_file **new_pending_files; 1229 int new_size; 1230 1231 if (heap->allocated < 1024) 1232 new_size = 1024; 1233 else 1234 new_size = heap->allocated * 2; 1235 /* Overflow might keep us from growing the list. */ 1236 if (new_size <= heap->allocated) { 1237 archive_set_error(&a->archive, 1238 ENOMEM, "Out of memory"); 1239 return (ARCHIVE_FATAL); 1240 } 1241 new_pending_files = (struct xar_file **) 1242 malloc(new_size * sizeof(new_pending_files[0])); 1243 if (new_pending_files == NULL) { 1244 archive_set_error(&a->archive, 1245 ENOMEM, "Out of memory"); 1246 return (ARCHIVE_FATAL); 1247 } 1248 if (heap->allocated) { 1249 memcpy(new_pending_files, heap->files, 1250 heap->allocated * sizeof(new_pending_files[0])); 1251 free(heap->files); 1252 } 1253 heap->files = new_pending_files; 1254 heap->allocated = new_size; 1255 } 1256 1257 file_id = file->id; 1258 1259 /* 1260 * Start with hole at end, walk it up tree to find insertion point. 1261 */ 1262 hole = heap->used++; 1263 while (hole > 0) { 1264 parent = (hole - 1)/2; 1265 parent_id = heap->files[parent]->id; 1266 if (file_id >= parent_id) { 1267 heap->files[hole] = file; 1268 return (ARCHIVE_OK); 1269 } 1270 /* Move parent into hole <==> move hole up tree. */ 1271 heap->files[hole] = heap->files[parent]; 1272 hole = parent; 1273 } 1274 heap->files[0] = file; 1275 1276 return (ARCHIVE_OK); 1277 } 1278 1279 static struct xar_file * 1280 heap_get_entry(struct heap_queue *heap) 1281 { 1282 uint64_t a_id, b_id, c_id; 1283 int a, b, c; 1284 struct xar_file *r, *tmp; 1285 1286 if (heap->used < 1) 1287 return (NULL); 1288 1289 /* 1290 * The first file in the list is the earliest; we'll return this. 1291 */ 1292 r = heap->files[0]; 1293 1294 /* 1295 * Move the last item in the heap to the root of the tree 1296 */ 1297 heap->files[0] = heap->files[--(heap->used)]; 1298 1299 /* 1300 * Rebalance the heap. 1301 */ 1302 a = 0; /* Starting element and its heap key */ 1303 a_id = heap->files[a]->id; 1304 for (;;) { 1305 b = a + a + 1; /* First child */ 1306 if (b >= heap->used) 1307 return (r); 1308 b_id = heap->files[b]->id; 1309 c = b + 1; /* Use second child if it is smaller. */ 1310 if (c < heap->used) { 1311 c_id = heap->files[c]->id; 1312 if (c_id < b_id) { 1313 b = c; 1314 b_id = c_id; 1315 } 1316 } 1317 if (a_id <= b_id) 1318 return (r); 1319 tmp = heap->files[a]; 1320 heap->files[a] = heap->files[b]; 1321 heap->files[b] = tmp; 1322 a = b; 1323 } 1324 } 1325 1326 static int 1327 add_link(struct archive_read *a, struct xar *xar, struct xar_file *file) 1328 { 1329 struct hdlink *hdlink; 1330 1331 for (hdlink = xar->hdlink_list; hdlink != NULL; hdlink = hdlink->next) { 1332 if (hdlink->id == file->link) { 1333 file->hdnext = hdlink->files; 1334 hdlink->cnt++; 1335 hdlink->files = file; 1336 return (ARCHIVE_OK); 1337 } 1338 } 1339 hdlink = malloc(sizeof(*hdlink)); 1340 if (hdlink == NULL) { 1341 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 1342 return (ARCHIVE_FATAL); 1343 } 1344 file->hdnext = NULL; 1345 hdlink->id = file->link; 1346 hdlink->cnt = 1; 1347 hdlink->files = file; 1348 hdlink->next = xar->hdlink_list; 1349 xar->hdlink_list = hdlink; 1350 return (ARCHIVE_OK); 1351 } 1352 1353 static void 1354 _checksum_init(struct chksumwork *sumwrk, int sum_alg) 1355 { 1356 sumwrk->alg = sum_alg; 1357 switch (sum_alg) { 1358 case CKSUM_NONE: 1359 break; 1360 case CKSUM_SHA1: 1361 archive_sha1_init(&(sumwrk->sha1ctx)); 1362 break; 1363 case CKSUM_MD5: 1364 archive_md5_init(&(sumwrk->md5ctx)); 1365 break; 1366 } 1367 } 1368 1369 static void 1370 _checksum_update(struct chksumwork *sumwrk, const void *buff, size_t size) 1371 { 1372 1373 switch (sumwrk->alg) { 1374 case CKSUM_NONE: 1375 break; 1376 case CKSUM_SHA1: 1377 archive_sha1_update(&(sumwrk->sha1ctx), buff, size); 1378 break; 1379 case CKSUM_MD5: 1380 archive_md5_update(&(sumwrk->md5ctx), buff, size); 1381 break; 1382 } 1383 } 1384 1385 static int 1386 _checksum_final(struct chksumwork *sumwrk, const void *val, size_t len) 1387 { 1388 unsigned char sum[MAX_SUM_SIZE]; 1389 int r = ARCHIVE_OK; 1390 1391 switch (sumwrk->alg) { 1392 case CKSUM_NONE: 1393 break; 1394 case CKSUM_SHA1: 1395 archive_sha1_final(&(sumwrk->sha1ctx), sum); 1396 if (len != SHA1_SIZE || 1397 memcmp(val, sum, SHA1_SIZE) != 0) 1398 r = ARCHIVE_FAILED; 1399 break; 1400 case CKSUM_MD5: 1401 archive_md5_final(&(sumwrk->md5ctx), sum); 1402 if (len != MD5_SIZE || 1403 memcmp(val, sum, MD5_SIZE) != 0) 1404 r = ARCHIVE_FAILED; 1405 break; 1406 } 1407 return (r); 1408 } 1409 1410 static void 1411 checksum_init(struct archive_read *a, int a_sum_alg, int e_sum_alg) 1412 { 1413 struct xar *xar; 1414 1415 xar = (struct xar *)(a->format->data); 1416 _checksum_init(&(xar->a_sumwrk), a_sum_alg); 1417 _checksum_init(&(xar->e_sumwrk), e_sum_alg); 1418 } 1419 1420 static void 1421 checksum_update(struct archive_read *a, const void *abuff, size_t asize, 1422 const void *ebuff, size_t esize) 1423 { 1424 struct xar *xar; 1425 1426 xar = (struct xar *)(a->format->data); 1427 _checksum_update(&(xar->a_sumwrk), abuff, asize); 1428 _checksum_update(&(xar->e_sumwrk), ebuff, esize); 1429 } 1430 1431 static int 1432 checksum_final(struct archive_read *a, const void *a_sum_val, 1433 size_t a_sum_len, const void *e_sum_val, size_t e_sum_len) 1434 { 1435 struct xar *xar; 1436 int r; 1437 1438 xar = (struct xar *)(a->format->data); 1439 r = _checksum_final(&(xar->a_sumwrk), a_sum_val, a_sum_len); 1440 if (r == ARCHIVE_OK) 1441 r = _checksum_final(&(xar->e_sumwrk), e_sum_val, e_sum_len); 1442 if (r != ARCHIVE_OK) 1443 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC, 1444 "Sumcheck error"); 1445 return (r); 1446 } 1447 1448 static int 1449 decompression_init(struct archive_read *a, enum enctype encoding) 1450 { 1451 struct xar *xar; 1452 const char *detail; 1453 int r; 1454 1455 xar = (struct xar *)(a->format->data); 1456 xar->rd_encoding = encoding; 1457 switch (encoding) { 1458 case NONE: 1459 break; 1460 case GZIP: 1461 if (xar->stream_valid) 1462 r = inflateReset(&(xar->stream)); 1463 else 1464 r = inflateInit(&(xar->stream)); 1465 if (r != Z_OK) { 1466 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1467 "Couldn't initialize zlib stream."); 1468 return (ARCHIVE_FATAL); 1469 } 1470 xar->stream_valid = 1; 1471 xar->stream.total_in = 0; 1472 xar->stream.total_out = 0; 1473 break; 1474 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR) 1475 case BZIP2: 1476 if (xar->bzstream_valid) { 1477 BZ2_bzDecompressEnd(&(xar->bzstream)); 1478 xar->bzstream_valid = 0; 1479 } 1480 r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 0); 1481 if (r == BZ_MEM_ERROR) 1482 r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 1); 1483 if (r != BZ_OK) { 1484 int err = ARCHIVE_ERRNO_MISC; 1485 detail = NULL; 1486 switch (r) { 1487 case BZ_PARAM_ERROR: 1488 detail = "invalid setup parameter"; 1489 break; 1490 case BZ_MEM_ERROR: 1491 err = ENOMEM; 1492 detail = "out of memory"; 1493 break; 1494 case BZ_CONFIG_ERROR: 1495 detail = "mis-compiled library"; 1496 break; 1497 } 1498 archive_set_error(&a->archive, err, 1499 "Internal error initializing decompressor: %s", 1500 detail == NULL ? "??" : detail); 1501 xar->bzstream_valid = 0; 1502 return (ARCHIVE_FATAL); 1503 } 1504 xar->bzstream_valid = 1; 1505 xar->bzstream.total_in_lo32 = 0; 1506 xar->bzstream.total_in_hi32 = 0; 1507 xar->bzstream.total_out_lo32 = 0; 1508 xar->bzstream.total_out_hi32 = 0; 1509 break; 1510 #endif 1511 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA) 1512 #if LZMA_VERSION_MAJOR >= 5 1513 /* Effectively disable the limiter. */ 1514 #define LZMA_MEMLIMIT UINT64_MAX 1515 #else 1516 /* NOTE: This needs to check memory size which running system has. */ 1517 #define LZMA_MEMLIMIT (1U << 30) 1518 #endif 1519 case XZ: 1520 case LZMA: 1521 if (xar->lzstream_valid) { 1522 lzma_end(&(xar->lzstream)); 1523 xar->lzstream_valid = 0; 1524 } 1525 if (xar->entry_encoding == XZ) 1526 r = lzma_stream_decoder(&(xar->lzstream), 1527 LZMA_MEMLIMIT,/* memlimit */ 1528 LZMA_CONCATENATED); 1529 else 1530 r = lzma_alone_decoder(&(xar->lzstream), 1531 LZMA_MEMLIMIT);/* memlimit */ 1532 if (r != LZMA_OK) { 1533 switch (r) { 1534 case LZMA_MEM_ERROR: 1535 archive_set_error(&a->archive, 1536 ENOMEM, 1537 "Internal error initializing " 1538 "compression library: " 1539 "Cannot allocate memory"); 1540 break; 1541 case LZMA_OPTIONS_ERROR: 1542 archive_set_error(&a->archive, 1543 ARCHIVE_ERRNO_MISC, 1544 "Internal error initializing " 1545 "compression library: " 1546 "Invalid or unsupported options"); 1547 break; 1548 default: 1549 archive_set_error(&a->archive, 1550 ARCHIVE_ERRNO_MISC, 1551 "Internal error initializing " 1552 "lzma library"); 1553 break; 1554 } 1555 return (ARCHIVE_FATAL); 1556 } 1557 xar->lzstream_valid = 1; 1558 xar->lzstream.total_in = 0; 1559 xar->lzstream.total_out = 0; 1560 break; 1561 #endif 1562 /* 1563 * Unsupported compression. 1564 */ 1565 default: 1566 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR) 1567 case BZIP2: 1568 #endif 1569 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA) 1570 case LZMA: 1571 case XZ: 1572 #endif 1573 switch (xar->entry_encoding) { 1574 case BZIP2: detail = "bzip2"; break; 1575 case LZMA: detail = "lzma"; break; 1576 case XZ: detail = "xz"; break; 1577 default: detail = "??"; break; 1578 } 1579 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1580 "%s compression not supported on this platform", 1581 detail); 1582 return (ARCHIVE_FAILED); 1583 } 1584 return (ARCHIVE_OK); 1585 } 1586 1587 static int 1588 decompress(struct archive_read *a, const void **buff, size_t *outbytes, 1589 const void *b, size_t *used) 1590 { 1591 struct xar *xar; 1592 void *outbuff; 1593 size_t avail_in, avail_out; 1594 int r; 1595 1596 xar = (struct xar *)(a->format->data); 1597 avail_in = *used; 1598 outbuff = (void *)(uintptr_t)*buff; 1599 if (outbuff == NULL) { 1600 if (xar->outbuff == NULL) { 1601 xar->outbuff = malloc(OUTBUFF_SIZE); 1602 if (xar->outbuff == NULL) { 1603 archive_set_error(&a->archive, ENOMEM, 1604 "Couldn't allocate memory for out buffer"); 1605 return (ARCHIVE_FATAL); 1606 } 1607 } 1608 outbuff = xar->outbuff; 1609 *buff = outbuff; 1610 avail_out = OUTBUFF_SIZE; 1611 } else 1612 avail_out = *outbytes; 1613 switch (xar->rd_encoding) { 1614 case GZIP: 1615 xar->stream.next_in = (Bytef *)(uintptr_t)b; 1616 xar->stream.avail_in = avail_in; 1617 xar->stream.next_out = (unsigned char *)outbuff; 1618 xar->stream.avail_out = avail_out; 1619 r = inflate(&(xar->stream), 0); 1620 switch (r) { 1621 case Z_OK: /* Decompressor made some progress.*/ 1622 case Z_STREAM_END: /* Found end of stream. */ 1623 break; 1624 default: 1625 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1626 "File decompression failed (%d)", r); 1627 return (ARCHIVE_FATAL); 1628 } 1629 *used = avail_in - xar->stream.avail_in; 1630 *outbytes = avail_out - xar->stream.avail_out; 1631 break; 1632 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR) 1633 case BZIP2: 1634 xar->bzstream.next_in = (char *)(uintptr_t)b; 1635 xar->bzstream.avail_in = avail_in; 1636 xar->bzstream.next_out = (char *)outbuff; 1637 xar->bzstream.avail_out = avail_out; 1638 r = BZ2_bzDecompress(&(xar->bzstream)); 1639 switch (r) { 1640 case BZ_STREAM_END: /* Found end of stream. */ 1641 switch (BZ2_bzDecompressEnd(&(xar->bzstream))) { 1642 case BZ_OK: 1643 break; 1644 default: 1645 archive_set_error(&(a->archive), 1646 ARCHIVE_ERRNO_MISC, 1647 "Failed to clean up decompressor"); 1648 return (ARCHIVE_FATAL); 1649 } 1650 xar->bzstream_valid = 0; 1651 /* FALLTHROUGH */ 1652 case BZ_OK: /* Decompressor made some progress. */ 1653 break; 1654 default: 1655 archive_set_error(&(a->archive), 1656 ARCHIVE_ERRNO_MISC, 1657 "bzip decompression failed"); 1658 return (ARCHIVE_FATAL); 1659 } 1660 *used = avail_in - xar->bzstream.avail_in; 1661 *outbytes = avail_out - xar->bzstream.avail_out; 1662 break; 1663 #endif 1664 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA) 1665 case LZMA: 1666 case XZ: 1667 xar->lzstream.next_in = b; 1668 xar->lzstream.avail_in = avail_in; 1669 xar->lzstream.next_out = (unsigned char *)outbuff; 1670 xar->lzstream.avail_out = avail_out; 1671 r = lzma_code(&(xar->lzstream), LZMA_RUN); 1672 switch (r) { 1673 case LZMA_STREAM_END: /* Found end of stream. */ 1674 lzma_end(&(xar->lzstream)); 1675 xar->lzstream_valid = 0; 1676 /* FALLTHROUGH */ 1677 case LZMA_OK: /* Decompressor made some progress. */ 1678 break; 1679 default: 1680 archive_set_error(&(a->archive), 1681 ARCHIVE_ERRNO_MISC, 1682 "%s decompression failed(%d)", 1683 (xar->entry_encoding == XZ)?"xz":"lzma", 1684 r); 1685 return (ARCHIVE_FATAL); 1686 } 1687 *used = avail_in - xar->lzstream.avail_in; 1688 *outbytes = avail_out - xar->lzstream.avail_out; 1689 break; 1690 #endif 1691 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR) 1692 case BZIP2: 1693 #endif 1694 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA) 1695 case LZMA: 1696 case XZ: 1697 #endif 1698 case NONE: 1699 default: 1700 if (outbuff == xar->outbuff) { 1701 *buff = b; 1702 *used = avail_in; 1703 *outbytes = avail_in; 1704 } else { 1705 if (avail_out > avail_in) 1706 avail_out = avail_in; 1707 memcpy(outbuff, b, avail_out); 1708 *used = avail_out; 1709 *outbytes = avail_out; 1710 } 1711 break; 1712 } 1713 return (ARCHIVE_OK); 1714 } 1715 1716 static int 1717 decompression_cleanup(struct archive_read *a) 1718 { 1719 struct xar *xar; 1720 int r; 1721 1722 xar = (struct xar *)(a->format->data); 1723 r = ARCHIVE_OK; 1724 if (xar->stream_valid) { 1725 if (inflateEnd(&(xar->stream)) != Z_OK) { 1726 archive_set_error(&a->archive, 1727 ARCHIVE_ERRNO_MISC, 1728 "Failed to clean up zlib decompressor"); 1729 r = ARCHIVE_FATAL; 1730 } 1731 } 1732 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR) 1733 if (xar->bzstream_valid) { 1734 if (BZ2_bzDecompressEnd(&(xar->bzstream)) != BZ_OK) { 1735 archive_set_error(&a->archive, 1736 ARCHIVE_ERRNO_MISC, 1737 "Failed to clean up bzip2 decompressor"); 1738 r = ARCHIVE_FATAL; 1739 } 1740 } 1741 #endif 1742 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA) 1743 if (xar->lzstream_valid) 1744 lzma_end(&(xar->lzstream)); 1745 #elif defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA) 1746 if (xar->lzstream_valid) { 1747 if (lzmadec_end(&(xar->lzstream)) != LZMADEC_OK) { 1748 archive_set_error(&a->archive, 1749 ARCHIVE_ERRNO_MISC, 1750 "Failed to clean up lzmadec decompressor"); 1751 r = ARCHIVE_FATAL; 1752 } 1753 } 1754 #endif 1755 return (r); 1756 } 1757 1758 static void 1759 checksum_cleanup(struct archive_read *a) { 1760 struct xar *xar; 1761 1762 xar = (struct xar *)(a->format->data); 1763 1764 _checksum_final(&(xar->a_sumwrk), NULL, 0); 1765 _checksum_final(&(xar->e_sumwrk), NULL, 0); 1766 } 1767 1768 static void 1769 xmlattr_cleanup(struct xmlattr_list *list) 1770 { 1771 struct xmlattr *attr, *next; 1772 1773 attr = list->first; 1774 while (attr != NULL) { 1775 next = attr->next; 1776 free(attr->name); 1777 free(attr->value); 1778 free(attr); 1779 attr = next; 1780 } 1781 list->first = NULL; 1782 list->last = &(list->first); 1783 } 1784 1785 static int 1786 file_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list) 1787 { 1788 struct xar_file *file; 1789 struct xmlattr *attr; 1790 1791 file = calloc(1, sizeof(*file)); 1792 if (file == NULL) { 1793 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 1794 return (ARCHIVE_FATAL); 1795 } 1796 file->parent = xar->file; 1797 file->mode = 0777 | AE_IFREG; 1798 file->atime = 0; 1799 file->mtime = 0; 1800 xar->file = file; 1801 xar->xattr = NULL; 1802 for (attr = list->first; attr != NULL; attr = attr->next) { 1803 if (strcmp(attr->name, "id") == 0) 1804 file->id = atol10(attr->value, strlen(attr->value)); 1805 } 1806 file->nlink = 1; 1807 if (heap_add_entry(a, &(xar->file_queue), file) != ARCHIVE_OK) 1808 return (ARCHIVE_FATAL); 1809 return (ARCHIVE_OK); 1810 } 1811 1812 static void 1813 file_free(struct xar_file *file) 1814 { 1815 struct xattr *xattr; 1816 1817 archive_string_free(&(file->pathname)); 1818 archive_string_free(&(file->symlink)); 1819 archive_string_free(&(file->uname)); 1820 archive_string_free(&(file->gname)); 1821 archive_string_free(&(file->hardlink)); 1822 xattr = file->xattr_list; 1823 while (xattr != NULL) { 1824 struct xattr *next; 1825 1826 next = xattr->next; 1827 xattr_free(xattr); 1828 xattr = next; 1829 } 1830 1831 free(file); 1832 } 1833 1834 static int 1835 xattr_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list) 1836 { 1837 struct xattr *xattr, **nx; 1838 struct xmlattr *attr; 1839 1840 xattr = calloc(1, sizeof(*xattr)); 1841 if (xattr == NULL) { 1842 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 1843 return (ARCHIVE_FATAL); 1844 } 1845 xar->xattr = xattr; 1846 for (attr = list->first; attr != NULL; attr = attr->next) { 1847 if (strcmp(attr->name, "id") == 0) 1848 xattr->id = atol10(attr->value, strlen(attr->value)); 1849 } 1850 /* Chain to xattr list. */ 1851 for (nx = &(xar->file->xattr_list); 1852 *nx != NULL; nx = &((*nx)->next)) { 1853 if (xattr->id < (*nx)->id) 1854 break; 1855 } 1856 xattr->next = *nx; 1857 *nx = xattr; 1858 1859 return (ARCHIVE_OK); 1860 } 1861 1862 static void 1863 xattr_free(struct xattr *xattr) 1864 { 1865 archive_string_free(&(xattr->name)); 1866 free(xattr); 1867 } 1868 1869 static int 1870 getencoding(struct xmlattr_list *list) 1871 { 1872 struct xmlattr *attr; 1873 enum enctype encoding = NONE; 1874 1875 for (attr = list->first; attr != NULL; attr = attr->next) { 1876 if (strcmp(attr->name, "style") == 0) { 1877 if (strcmp(attr->value, "application/octet-stream") == 0) 1878 encoding = NONE; 1879 else if (strcmp(attr->value, "application/x-gzip") == 0) 1880 encoding = GZIP; 1881 else if (strcmp(attr->value, "application/x-bzip2") == 0) 1882 encoding = BZIP2; 1883 else if (strcmp(attr->value, "application/x-lzma") == 0) 1884 encoding = LZMA; 1885 else if (strcmp(attr->value, "application/x-xz") == 0) 1886 encoding = XZ; 1887 } 1888 } 1889 return (encoding); 1890 } 1891 1892 static int 1893 getsumalgorithm(struct xmlattr_list *list) 1894 { 1895 struct xmlattr *attr; 1896 int alg = CKSUM_NONE; 1897 1898 for (attr = list->first; attr != NULL; attr = attr->next) { 1899 if (strcmp(attr->name, "style") == 0) { 1900 const char *v = attr->value; 1901 if ((v[0] == 'S' || v[0] == 's') && 1902 (v[1] == 'H' || v[1] == 'h') && 1903 (v[2] == 'A' || v[2] == 'a') && 1904 v[3] == '1' && v[4] == '\0') 1905 alg = CKSUM_SHA1; 1906 if ((v[0] == 'M' || v[0] == 'm') && 1907 (v[1] == 'D' || v[1] == 'd') && 1908 v[2] == '5' && v[3] == '\0') 1909 alg = CKSUM_MD5; 1910 } 1911 } 1912 return (alg); 1913 } 1914 1915 static int 1916 unknowntag_start(struct archive_read *a, struct xar *xar, const char *name) 1917 { 1918 struct unknown_tag *tag; 1919 1920 tag = malloc(sizeof(*tag)); 1921 if (tag == NULL) { 1922 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 1923 return (ARCHIVE_FATAL); 1924 } 1925 tag->next = xar->unknowntags; 1926 archive_string_init(&(tag->name)); 1927 archive_strcpy(&(tag->name), name); 1928 if (xar->unknowntags == NULL) { 1929 #if DEBUG 1930 fprintf(stderr, "UNKNOWNTAG_START:%s\n", name); 1931 #endif 1932 xar->xmlsts_unknown = xar->xmlsts; 1933 xar->xmlsts = UNKNOWN; 1934 } 1935 xar->unknowntags = tag; 1936 return (ARCHIVE_OK); 1937 } 1938 1939 static void 1940 unknowntag_end(struct xar *xar, const char *name) 1941 { 1942 struct unknown_tag *tag; 1943 1944 tag = xar->unknowntags; 1945 if (tag == NULL || name == NULL) 1946 return; 1947 if (strcmp(tag->name.s, name) == 0) { 1948 xar->unknowntags = tag->next; 1949 archive_string_free(&(tag->name)); 1950 free(tag); 1951 if (xar->unknowntags == NULL) { 1952 #if DEBUG 1953 fprintf(stderr, "UNKNOWNTAG_END:%s\n", name); 1954 #endif 1955 xar->xmlsts = xar->xmlsts_unknown; 1956 } 1957 } 1958 } 1959 1960 static int 1961 xml_start(struct archive_read *a, const char *name, struct xmlattr_list *list) 1962 { 1963 struct xar *xar; 1964 struct xmlattr *attr; 1965 1966 xar = (struct xar *)(a->format->data); 1967 1968 #if DEBUG 1969 fprintf(stderr, "xml_sta:[%s]\n", name); 1970 for (attr = list->first; attr != NULL; attr = attr->next) 1971 fprintf(stderr, " attr:\"%s\"=\"%s\"\n", 1972 attr->name, attr->value); 1973 #endif 1974 xar->base64text = 0; 1975 switch (xar->xmlsts) { 1976 case INIT: 1977 if (strcmp(name, "xar") == 0) 1978 xar->xmlsts = XAR; 1979 else 1980 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 1981 return (ARCHIVE_FATAL); 1982 break; 1983 case XAR: 1984 if (strcmp(name, "toc") == 0) 1985 xar->xmlsts = TOC; 1986 else 1987 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 1988 return (ARCHIVE_FATAL); 1989 break; 1990 case TOC: 1991 if (strcmp(name, "creation-time") == 0) 1992 xar->xmlsts = TOC_CREATION_TIME; 1993 else if (strcmp(name, "checksum") == 0) 1994 xar->xmlsts = TOC_CHECKSUM; 1995 else if (strcmp(name, "file") == 0) { 1996 if (file_new(a, xar, list) != ARCHIVE_OK) 1997 return (ARCHIVE_FATAL); 1998 xar->xmlsts = TOC_FILE; 1999 } 2000 else 2001 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2002 return (ARCHIVE_FATAL); 2003 break; 2004 case TOC_CHECKSUM: 2005 if (strcmp(name, "offset") == 0) 2006 xar->xmlsts = TOC_CHECKSUM_OFFSET; 2007 else if (strcmp(name, "size") == 0) 2008 xar->xmlsts = TOC_CHECKSUM_SIZE; 2009 else 2010 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2011 return (ARCHIVE_FATAL); 2012 break; 2013 case TOC_FILE: 2014 if (strcmp(name, "file") == 0) { 2015 if (file_new(a, xar, list) != ARCHIVE_OK) 2016 return (ARCHIVE_FATAL); 2017 } 2018 else if (strcmp(name, "data") == 0) 2019 xar->xmlsts = FILE_DATA; 2020 else if (strcmp(name, "ea") == 0) { 2021 if (xattr_new(a, xar, list) != ARCHIVE_OK) 2022 return (ARCHIVE_FATAL); 2023 xar->xmlsts = FILE_EA; 2024 } 2025 else if (strcmp(name, "ctime") == 0) 2026 xar->xmlsts = FILE_CTIME; 2027 else if (strcmp(name, "mtime") == 0) 2028 xar->xmlsts = FILE_MTIME; 2029 else if (strcmp(name, "atime") == 0) 2030 xar->xmlsts = FILE_ATIME; 2031 else if (strcmp(name, "group") == 0) 2032 xar->xmlsts = FILE_GROUP; 2033 else if (strcmp(name, "gid") == 0) 2034 xar->xmlsts = FILE_GID; 2035 else if (strcmp(name, "user") == 0) 2036 xar->xmlsts = FILE_USER; 2037 else if (strcmp(name, "uid") == 0) 2038 xar->xmlsts = FILE_UID; 2039 else if (strcmp(name, "mode") == 0) 2040 xar->xmlsts = FILE_MODE; 2041 else if (strcmp(name, "device") == 0) 2042 xar->xmlsts = FILE_DEVICE; 2043 else if (strcmp(name, "deviceno") == 0) 2044 xar->xmlsts = FILE_DEVICENO; 2045 else if (strcmp(name, "inode") == 0) 2046 xar->xmlsts = FILE_INODE; 2047 else if (strcmp(name, "link") == 0) 2048 xar->xmlsts = FILE_LINK; 2049 else if (strcmp(name, "type") == 0) { 2050 xar->xmlsts = FILE_TYPE; 2051 for (attr = list->first; attr != NULL; 2052 attr = attr->next) { 2053 if (strcmp(attr->name, "link") != 0) 2054 continue; 2055 if (strcmp(attr->value, "original") == 0) { 2056 xar->file->hdnext = xar->hdlink_orgs; 2057 xar->hdlink_orgs = xar->file; 2058 } else { 2059 xar->file->link = (unsigned)atol10(attr->value, 2060 strlen(attr->value)); 2061 if (xar->file->link > 0) 2062 if (add_link(a, xar, xar->file) != ARCHIVE_OK) { 2063 return (ARCHIVE_FATAL); 2064 }; 2065 } 2066 } 2067 } 2068 else if (strcmp(name, "name") == 0) { 2069 xar->xmlsts = FILE_NAME; 2070 for (attr = list->first; attr != NULL; 2071 attr = attr->next) { 2072 if (strcmp(attr->name, "enctype") == 0 && 2073 strcmp(attr->value, "base64") == 0) 2074 xar->base64text = 1; 2075 } 2076 } 2077 else if (strcmp(name, "acl") == 0) 2078 xar->xmlsts = FILE_ACL; 2079 else if (strcmp(name, "flags") == 0) 2080 xar->xmlsts = FILE_FLAGS; 2081 else if (strcmp(name, "ext2") == 0) 2082 xar->xmlsts = FILE_EXT2; 2083 else 2084 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2085 return (ARCHIVE_FATAL); 2086 break; 2087 case FILE_DATA: 2088 if (strcmp(name, "length") == 0) 2089 xar->xmlsts = FILE_DATA_LENGTH; 2090 else if (strcmp(name, "offset") == 0) 2091 xar->xmlsts = FILE_DATA_OFFSET; 2092 else if (strcmp(name, "size") == 0) 2093 xar->xmlsts = FILE_DATA_SIZE; 2094 else if (strcmp(name, "encoding") == 0) { 2095 xar->xmlsts = FILE_DATA_ENCODING; 2096 xar->file->encoding = getencoding(list); 2097 } 2098 else if (strcmp(name, "archived-checksum") == 0) { 2099 xar->xmlsts = FILE_DATA_A_CHECKSUM; 2100 xar->file->a_sum.alg = getsumalgorithm(list); 2101 } 2102 else if (strcmp(name, "extracted-checksum") == 0) { 2103 xar->xmlsts = FILE_DATA_E_CHECKSUM; 2104 xar->file->e_sum.alg = getsumalgorithm(list); 2105 } 2106 else if (strcmp(name, "content") == 0) 2107 xar->xmlsts = FILE_DATA_CONTENT; 2108 else 2109 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2110 return (ARCHIVE_FATAL); 2111 break; 2112 case FILE_DEVICE: 2113 if (strcmp(name, "major") == 0) 2114 xar->xmlsts = FILE_DEVICE_MAJOR; 2115 else if (strcmp(name, "minor") == 0) 2116 xar->xmlsts = FILE_DEVICE_MINOR; 2117 else 2118 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2119 return (ARCHIVE_FATAL); 2120 break; 2121 case FILE_DATA_CONTENT: 2122 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2123 return (ARCHIVE_FATAL); 2124 break; 2125 case FILE_EA: 2126 if (strcmp(name, "length") == 0) 2127 xar->xmlsts = FILE_EA_LENGTH; 2128 else if (strcmp(name, "offset") == 0) 2129 xar->xmlsts = FILE_EA_OFFSET; 2130 else if (strcmp(name, "size") == 0) 2131 xar->xmlsts = FILE_EA_SIZE; 2132 else if (strcmp(name, "encoding") == 0) { 2133 xar->xmlsts = FILE_EA_ENCODING; 2134 xar->xattr->encoding = getencoding(list); 2135 } else if (strcmp(name, "archived-checksum") == 0) 2136 xar->xmlsts = FILE_EA_A_CHECKSUM; 2137 else if (strcmp(name, "extracted-checksum") == 0) 2138 xar->xmlsts = FILE_EA_E_CHECKSUM; 2139 else if (strcmp(name, "name") == 0) 2140 xar->xmlsts = FILE_EA_NAME; 2141 else if (strcmp(name, "fstype") == 0) 2142 xar->xmlsts = FILE_EA_FSTYPE; 2143 else 2144 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2145 return (ARCHIVE_FATAL); 2146 break; 2147 case FILE_ACL: 2148 if (strcmp(name, "appleextended") == 0) 2149 xar->xmlsts = FILE_ACL_APPLEEXTENDED; 2150 else if (strcmp(name, "default") == 0) 2151 xar->xmlsts = FILE_ACL_DEFAULT; 2152 else if (strcmp(name, "access") == 0) 2153 xar->xmlsts = FILE_ACL_ACCESS; 2154 else 2155 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2156 return (ARCHIVE_FATAL); 2157 break; 2158 case FILE_FLAGS: 2159 if (!xml_parse_file_flags(xar, name)) 2160 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2161 return (ARCHIVE_FATAL); 2162 break; 2163 case FILE_EXT2: 2164 if (!xml_parse_file_ext2(xar, name)) 2165 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2166 return (ARCHIVE_FATAL); 2167 break; 2168 case TOC_CREATION_TIME: 2169 case TOC_CHECKSUM_OFFSET: 2170 case TOC_CHECKSUM_SIZE: 2171 case FILE_DATA_LENGTH: 2172 case FILE_DATA_OFFSET: 2173 case FILE_DATA_SIZE: 2174 case FILE_DATA_ENCODING: 2175 case FILE_DATA_A_CHECKSUM: 2176 case FILE_DATA_E_CHECKSUM: 2177 case FILE_EA_LENGTH: 2178 case FILE_EA_OFFSET: 2179 case FILE_EA_SIZE: 2180 case FILE_EA_ENCODING: 2181 case FILE_EA_A_CHECKSUM: 2182 case FILE_EA_E_CHECKSUM: 2183 case FILE_EA_NAME: 2184 case FILE_EA_FSTYPE: 2185 case FILE_CTIME: 2186 case FILE_MTIME: 2187 case FILE_ATIME: 2188 case FILE_GROUP: 2189 case FILE_GID: 2190 case FILE_USER: 2191 case FILE_UID: 2192 case FILE_INODE: 2193 case FILE_DEVICE_MAJOR: 2194 case FILE_DEVICE_MINOR: 2195 case FILE_DEVICENO: 2196 case FILE_MODE: 2197 case FILE_TYPE: 2198 case FILE_LINK: 2199 case FILE_NAME: 2200 case FILE_ACL_DEFAULT: 2201 case FILE_ACL_ACCESS: 2202 case FILE_ACL_APPLEEXTENDED: 2203 case FILE_FLAGS_USER_NODUMP: 2204 case FILE_FLAGS_USER_IMMUTABLE: 2205 case FILE_FLAGS_USER_APPEND: 2206 case FILE_FLAGS_USER_OPAQUE: 2207 case FILE_FLAGS_USER_NOUNLINK: 2208 case FILE_FLAGS_SYS_ARCHIVED: 2209 case FILE_FLAGS_SYS_IMMUTABLE: 2210 case FILE_FLAGS_SYS_APPEND: 2211 case FILE_FLAGS_SYS_NOUNLINK: 2212 case FILE_FLAGS_SYS_SNAPSHOT: 2213 case FILE_EXT2_SecureDeletion: 2214 case FILE_EXT2_Undelete: 2215 case FILE_EXT2_Compress: 2216 case FILE_EXT2_Synchronous: 2217 case FILE_EXT2_Immutable: 2218 case FILE_EXT2_AppendOnly: 2219 case FILE_EXT2_NoDump: 2220 case FILE_EXT2_NoAtime: 2221 case FILE_EXT2_CompDirty: 2222 case FILE_EXT2_CompBlock: 2223 case FILE_EXT2_NoCompBlock: 2224 case FILE_EXT2_CompError: 2225 case FILE_EXT2_BTree: 2226 case FILE_EXT2_HashIndexed: 2227 case FILE_EXT2_iMagic: 2228 case FILE_EXT2_Journaled: 2229 case FILE_EXT2_NoTail: 2230 case FILE_EXT2_DirSync: 2231 case FILE_EXT2_TopDir: 2232 case FILE_EXT2_Reserved: 2233 case UNKNOWN: 2234 if (unknowntag_start(a, xar, name) != ARCHIVE_OK) 2235 return (ARCHIVE_FATAL); 2236 break; 2237 } 2238 return (ARCHIVE_OK); 2239 } 2240 2241 static void 2242 xml_end(void *userData, const char *name) 2243 { 2244 struct archive_read *a; 2245 struct xar *xar; 2246 2247 a = (struct archive_read *)userData; 2248 xar = (struct xar *)(a->format->data); 2249 2250 #if DEBUG 2251 fprintf(stderr, "xml_end:[%s]\n", name); 2252 #endif 2253 switch (xar->xmlsts) { 2254 case INIT: 2255 break; 2256 case XAR: 2257 if (strcmp(name, "xar") == 0) 2258 xar->xmlsts = INIT; 2259 break; 2260 case TOC: 2261 if (strcmp(name, "toc") == 0) 2262 xar->xmlsts = XAR; 2263 break; 2264 case TOC_CREATION_TIME: 2265 if (strcmp(name, "creation-time") == 0) 2266 xar->xmlsts = TOC; 2267 break; 2268 case TOC_CHECKSUM: 2269 if (strcmp(name, "checksum") == 0) 2270 xar->xmlsts = TOC; 2271 break; 2272 case TOC_CHECKSUM_OFFSET: 2273 if (strcmp(name, "offset") == 0) 2274 xar->xmlsts = TOC_CHECKSUM; 2275 break; 2276 case TOC_CHECKSUM_SIZE: 2277 if (strcmp(name, "size") == 0) 2278 xar->xmlsts = TOC_CHECKSUM; 2279 break; 2280 case TOC_FILE: 2281 if (strcmp(name, "file") == 0) { 2282 if (xar->file->parent != NULL && 2283 ((xar->file->mode & AE_IFMT) == AE_IFDIR)) 2284 xar->file->parent->subdirs++; 2285 xar->file = xar->file->parent; 2286 if (xar->file == NULL) 2287 xar->xmlsts = TOC; 2288 } 2289 break; 2290 case FILE_DATA: 2291 if (strcmp(name, "data") == 0) 2292 xar->xmlsts = TOC_FILE; 2293 break; 2294 case FILE_DATA_LENGTH: 2295 if (strcmp(name, "length") == 0) 2296 xar->xmlsts = FILE_DATA; 2297 break; 2298 case FILE_DATA_OFFSET: 2299 if (strcmp(name, "offset") == 0) 2300 xar->xmlsts = FILE_DATA; 2301 break; 2302 case FILE_DATA_SIZE: 2303 if (strcmp(name, "size") == 0) 2304 xar->xmlsts = FILE_DATA; 2305 break; 2306 case FILE_DATA_ENCODING: 2307 if (strcmp(name, "encoding") == 0) 2308 xar->xmlsts = FILE_DATA; 2309 break; 2310 case FILE_DATA_A_CHECKSUM: 2311 if (strcmp(name, "archived-checksum") == 0) 2312 xar->xmlsts = FILE_DATA; 2313 break; 2314 case FILE_DATA_E_CHECKSUM: 2315 if (strcmp(name, "extracted-checksum") == 0) 2316 xar->xmlsts = FILE_DATA; 2317 break; 2318 case FILE_DATA_CONTENT: 2319 if (strcmp(name, "content") == 0) 2320 xar->xmlsts = FILE_DATA; 2321 break; 2322 case FILE_EA: 2323 if (strcmp(name, "ea") == 0) { 2324 xar->xmlsts = TOC_FILE; 2325 xar->xattr = NULL; 2326 } 2327 break; 2328 case FILE_EA_LENGTH: 2329 if (strcmp(name, "length") == 0) 2330 xar->xmlsts = FILE_EA; 2331 break; 2332 case FILE_EA_OFFSET: 2333 if (strcmp(name, "offset") == 0) 2334 xar->xmlsts = FILE_EA; 2335 break; 2336 case FILE_EA_SIZE: 2337 if (strcmp(name, "size") == 0) 2338 xar->xmlsts = FILE_EA; 2339 break; 2340 case FILE_EA_ENCODING: 2341 if (strcmp(name, "encoding") == 0) 2342 xar->xmlsts = FILE_EA; 2343 break; 2344 case FILE_EA_A_CHECKSUM: 2345 if (strcmp(name, "archived-checksum") == 0) 2346 xar->xmlsts = FILE_EA; 2347 break; 2348 case FILE_EA_E_CHECKSUM: 2349 if (strcmp(name, "extracted-checksum") == 0) 2350 xar->xmlsts = FILE_EA; 2351 break; 2352 case FILE_EA_NAME: 2353 if (strcmp(name, "name") == 0) 2354 xar->xmlsts = FILE_EA; 2355 break; 2356 case FILE_EA_FSTYPE: 2357 if (strcmp(name, "fstype") == 0) 2358 xar->xmlsts = FILE_EA; 2359 break; 2360 case FILE_CTIME: 2361 if (strcmp(name, "ctime") == 0) 2362 xar->xmlsts = TOC_FILE; 2363 break; 2364 case FILE_MTIME: 2365 if (strcmp(name, "mtime") == 0) 2366 xar->xmlsts = TOC_FILE; 2367 break; 2368 case FILE_ATIME: 2369 if (strcmp(name, "atime") == 0) 2370 xar->xmlsts = TOC_FILE; 2371 break; 2372 case FILE_GROUP: 2373 if (strcmp(name, "group") == 0) 2374 xar->xmlsts = TOC_FILE; 2375 break; 2376 case FILE_GID: 2377 if (strcmp(name, "gid") == 0) 2378 xar->xmlsts = TOC_FILE; 2379 break; 2380 case FILE_USER: 2381 if (strcmp(name, "user") == 0) 2382 xar->xmlsts = TOC_FILE; 2383 break; 2384 case FILE_UID: 2385 if (strcmp(name, "uid") == 0) 2386 xar->xmlsts = TOC_FILE; 2387 break; 2388 case FILE_MODE: 2389 if (strcmp(name, "mode") == 0) 2390 xar->xmlsts = TOC_FILE; 2391 break; 2392 case FILE_DEVICE: 2393 if (strcmp(name, "device") == 0) 2394 xar->xmlsts = TOC_FILE; 2395 break; 2396 case FILE_DEVICE_MAJOR: 2397 if (strcmp(name, "major") == 0) 2398 xar->xmlsts = FILE_DEVICE; 2399 break; 2400 case FILE_DEVICE_MINOR: 2401 if (strcmp(name, "minor") == 0) 2402 xar->xmlsts = FILE_DEVICE; 2403 break; 2404 case FILE_DEVICENO: 2405 if (strcmp(name, "deviceno") == 0) 2406 xar->xmlsts = TOC_FILE; 2407 break; 2408 case FILE_INODE: 2409 if (strcmp(name, "inode") == 0) 2410 xar->xmlsts = TOC_FILE; 2411 break; 2412 case FILE_LINK: 2413 if (strcmp(name, "link") == 0) 2414 xar->xmlsts = TOC_FILE; 2415 break; 2416 case FILE_TYPE: 2417 if (strcmp(name, "type") == 0) 2418 xar->xmlsts = TOC_FILE; 2419 break; 2420 case FILE_NAME: 2421 if (strcmp(name, "name") == 0) 2422 xar->xmlsts = TOC_FILE; 2423 break; 2424 case FILE_ACL: 2425 if (strcmp(name, "acl") == 0) 2426 xar->xmlsts = TOC_FILE; 2427 break; 2428 case FILE_ACL_DEFAULT: 2429 if (strcmp(name, "default") == 0) 2430 xar->xmlsts = FILE_ACL; 2431 break; 2432 case FILE_ACL_ACCESS: 2433 if (strcmp(name, "access") == 0) 2434 xar->xmlsts = FILE_ACL; 2435 break; 2436 case FILE_ACL_APPLEEXTENDED: 2437 if (strcmp(name, "appleextended") == 0) 2438 xar->xmlsts = FILE_ACL; 2439 break; 2440 case FILE_FLAGS: 2441 if (strcmp(name, "flags") == 0) 2442 xar->xmlsts = TOC_FILE; 2443 break; 2444 case FILE_FLAGS_USER_NODUMP: 2445 if (strcmp(name, "UserNoDump") == 0) 2446 xar->xmlsts = FILE_FLAGS; 2447 break; 2448 case FILE_FLAGS_USER_IMMUTABLE: 2449 if (strcmp(name, "UserImmutable") == 0) 2450 xar->xmlsts = FILE_FLAGS; 2451 break; 2452 case FILE_FLAGS_USER_APPEND: 2453 if (strcmp(name, "UserAppend") == 0) 2454 xar->xmlsts = FILE_FLAGS; 2455 break; 2456 case FILE_FLAGS_USER_OPAQUE: 2457 if (strcmp(name, "UserOpaque") == 0) 2458 xar->xmlsts = FILE_FLAGS; 2459 break; 2460 case FILE_FLAGS_USER_NOUNLINK: 2461 if (strcmp(name, "UserNoUnlink") == 0) 2462 xar->xmlsts = FILE_FLAGS; 2463 break; 2464 case FILE_FLAGS_SYS_ARCHIVED: 2465 if (strcmp(name, "SystemArchived") == 0) 2466 xar->xmlsts = FILE_FLAGS; 2467 break; 2468 case FILE_FLAGS_SYS_IMMUTABLE: 2469 if (strcmp(name, "SystemImmutable") == 0) 2470 xar->xmlsts = FILE_FLAGS; 2471 break; 2472 case FILE_FLAGS_SYS_APPEND: 2473 if (strcmp(name, "SystemAppend") == 0) 2474 xar->xmlsts = FILE_FLAGS; 2475 break; 2476 case FILE_FLAGS_SYS_NOUNLINK: 2477 if (strcmp(name, "SystemNoUnlink") == 0) 2478 xar->xmlsts = FILE_FLAGS; 2479 break; 2480 case FILE_FLAGS_SYS_SNAPSHOT: 2481 if (strcmp(name, "SystemSnapshot") == 0) 2482 xar->xmlsts = FILE_FLAGS; 2483 break; 2484 case FILE_EXT2: 2485 if (strcmp(name, "ext2") == 0) 2486 xar->xmlsts = TOC_FILE; 2487 break; 2488 case FILE_EXT2_SecureDeletion: 2489 if (strcmp(name, "SecureDeletion") == 0) 2490 xar->xmlsts = FILE_EXT2; 2491 break; 2492 case FILE_EXT2_Undelete: 2493 if (strcmp(name, "Undelete") == 0) 2494 xar->xmlsts = FILE_EXT2; 2495 break; 2496 case FILE_EXT2_Compress: 2497 if (strcmp(name, "Compress") == 0) 2498 xar->xmlsts = FILE_EXT2; 2499 break; 2500 case FILE_EXT2_Synchronous: 2501 if (strcmp(name, "Synchronous") == 0) 2502 xar->xmlsts = FILE_EXT2; 2503 break; 2504 case FILE_EXT2_Immutable: 2505 if (strcmp(name, "Immutable") == 0) 2506 xar->xmlsts = FILE_EXT2; 2507 break; 2508 case FILE_EXT2_AppendOnly: 2509 if (strcmp(name, "AppendOnly") == 0) 2510 xar->xmlsts = FILE_EXT2; 2511 break; 2512 case FILE_EXT2_NoDump: 2513 if (strcmp(name, "NoDump") == 0) 2514 xar->xmlsts = FILE_EXT2; 2515 break; 2516 case FILE_EXT2_NoAtime: 2517 if (strcmp(name, "NoAtime") == 0) 2518 xar->xmlsts = FILE_EXT2; 2519 break; 2520 case FILE_EXT2_CompDirty: 2521 if (strcmp(name, "CompDirty") == 0) 2522 xar->xmlsts = FILE_EXT2; 2523 break; 2524 case FILE_EXT2_CompBlock: 2525 if (strcmp(name, "CompBlock") == 0) 2526 xar->xmlsts = FILE_EXT2; 2527 break; 2528 case FILE_EXT2_NoCompBlock: 2529 if (strcmp(name, "NoCompBlock") == 0) 2530 xar->xmlsts = FILE_EXT2; 2531 break; 2532 case FILE_EXT2_CompError: 2533 if (strcmp(name, "CompError") == 0) 2534 xar->xmlsts = FILE_EXT2; 2535 break; 2536 case FILE_EXT2_BTree: 2537 if (strcmp(name, "BTree") == 0) 2538 xar->xmlsts = FILE_EXT2; 2539 break; 2540 case FILE_EXT2_HashIndexed: 2541 if (strcmp(name, "HashIndexed") == 0) 2542 xar->xmlsts = FILE_EXT2; 2543 break; 2544 case FILE_EXT2_iMagic: 2545 if (strcmp(name, "iMagic") == 0) 2546 xar->xmlsts = FILE_EXT2; 2547 break; 2548 case FILE_EXT2_Journaled: 2549 if (strcmp(name, "Journaled") == 0) 2550 xar->xmlsts = FILE_EXT2; 2551 break; 2552 case FILE_EXT2_NoTail: 2553 if (strcmp(name, "NoTail") == 0) 2554 xar->xmlsts = FILE_EXT2; 2555 break; 2556 case FILE_EXT2_DirSync: 2557 if (strcmp(name, "DirSync") == 0) 2558 xar->xmlsts = FILE_EXT2; 2559 break; 2560 case FILE_EXT2_TopDir: 2561 if (strcmp(name, "TopDir") == 0) 2562 xar->xmlsts = FILE_EXT2; 2563 break; 2564 case FILE_EXT2_Reserved: 2565 if (strcmp(name, "Reserved") == 0) 2566 xar->xmlsts = FILE_EXT2; 2567 break; 2568 case UNKNOWN: 2569 unknowntag_end(xar, name); 2570 break; 2571 } 2572 } 2573 2574 static const int base64[256] = { 2575 -1, -1, -1, -1, -1, -1, -1, -1, 2576 -1, -1, -1, -1, -1, -1, -1, -1, /* 00 - 0F */ 2577 -1, -1, -1, -1, -1, -1, -1, -1, 2578 -1, -1, -1, -1, -1, -1, -1, -1, /* 10 - 1F */ 2579 -1, -1, -1, -1, -1, -1, -1, -1, 2580 -1, -1, -1, 62, -1, -1, -1, 63, /* 20 - 2F */ 2581 52, 53, 54, 55, 56, 57, 58, 59, 2582 60, 61, -1, -1, -1, -1, -1, -1, /* 30 - 3F */ 2583 -1, 0, 1, 2, 3, 4, 5, 6, 2584 7, 8, 9, 10, 11, 12, 13, 14, /* 40 - 4F */ 2585 15, 16, 17, 18, 19, 20, 21, 22, 2586 23, 24, 25, -1, -1, -1, -1, -1, /* 50 - 5F */ 2587 -1, 26, 27, 28, 29, 30, 31, 32, 2588 33, 34, 35, 36, 37, 38, 39, 40, /* 60 - 6F */ 2589 41, 42, 43, 44, 45, 46, 47, 48, 2590 49, 50, 51, -1, -1, -1, -1, -1, /* 70 - 7F */ 2591 -1, -1, -1, -1, -1, -1, -1, -1, 2592 -1, -1, -1, -1, -1, -1, -1, -1, /* 80 - 8F */ 2593 -1, -1, -1, -1, -1, -1, -1, -1, 2594 -1, -1, -1, -1, -1, -1, -1, -1, /* 90 - 9F */ 2595 -1, -1, -1, -1, -1, -1, -1, -1, 2596 -1, -1, -1, -1, -1, -1, -1, -1, /* A0 - AF */ 2597 -1, -1, -1, -1, -1, -1, -1, -1, 2598 -1, -1, -1, -1, -1, -1, -1, -1, /* B0 - BF */ 2599 -1, -1, -1, -1, -1, -1, -1, -1, 2600 -1, -1, -1, -1, -1, -1, -1, -1, /* C0 - CF */ 2601 -1, -1, -1, -1, -1, -1, -1, -1, 2602 -1, -1, -1, -1, -1, -1, -1, -1, /* D0 - DF */ 2603 -1, -1, -1, -1, -1, -1, -1, -1, 2604 -1, -1, -1, -1, -1, -1, -1, -1, /* E0 - EF */ 2605 -1, -1, -1, -1, -1, -1, -1, -1, 2606 -1, -1, -1, -1, -1, -1, -1, -1, /* F0 - FF */ 2607 }; 2608 2609 static void 2610 strappend_base64(struct xar *xar, 2611 struct archive_string *as, const char *s, size_t l) 2612 { 2613 unsigned char buff[256]; 2614 unsigned char *out; 2615 const unsigned char *b; 2616 size_t len; 2617 2618 (void)xar; /* UNUSED */ 2619 len = 0; 2620 out = buff; 2621 b = (const unsigned char *)s; 2622 while (l > 0) { 2623 int n = 0; 2624 2625 if (base64[b[0]] < 0 || base64[b[1]] < 0) 2626 break; 2627 n = base64[*b++] << 18; 2628 n |= base64[*b++] << 12; 2629 *out++ = n >> 16; 2630 len++; 2631 l -= 2; 2632 2633 if (l > 0) { 2634 if (base64[*b] < 0) 2635 break; 2636 n |= base64[*b++] << 6; 2637 *out++ = (n >> 8) & 0xFF; 2638 len++; 2639 --l; 2640 } 2641 if (l > 0) { 2642 if (base64[*b] < 0) 2643 break; 2644 n |= base64[*b++]; 2645 *out++ = n & 0xFF; 2646 len++; 2647 --l; 2648 } 2649 if (len+3 >= sizeof(buff)) { 2650 archive_strncat(as, (const char *)buff, len); 2651 len = 0; 2652 out = buff; 2653 } 2654 } 2655 if (len > 0) 2656 archive_strncat(as, (const char *)buff, len); 2657 } 2658 2659 static int 2660 is_string(const char *known, const char *data, size_t len) 2661 { 2662 if (strlen(known) != len) 2663 return -1; 2664 return memcmp(data, known, len); 2665 } 2666 2667 static void 2668 xml_data(void *userData, const char *s, int len) 2669 { 2670 struct archive_read *a; 2671 struct xar *xar; 2672 2673 a = (struct archive_read *)userData; 2674 xar = (struct xar *)(a->format->data); 2675 2676 #if DEBUG 2677 { 2678 char buff[1024]; 2679 if (len > (int)(sizeof(buff)-1)) 2680 len = (int)(sizeof(buff)-1); 2681 strncpy(buff, s, len); 2682 buff[len] = 0; 2683 fprintf(stderr, "\tlen=%d:\"%s\"\n", len, buff); 2684 } 2685 #endif 2686 switch (xar->xmlsts) { 2687 case TOC_CHECKSUM_OFFSET: 2688 xar->toc_chksum_offset = atol10(s, len); 2689 break; 2690 case TOC_CHECKSUM_SIZE: 2691 xar->toc_chksum_size = atol10(s, len); 2692 break; 2693 default: 2694 break; 2695 } 2696 if (xar->file == NULL) 2697 return; 2698 2699 switch (xar->xmlsts) { 2700 case FILE_NAME: 2701 if (xar->file->parent != NULL) { 2702 archive_string_concat(&(xar->file->pathname), 2703 &(xar->file->parent->pathname)); 2704 archive_strappend_char(&(xar->file->pathname), '/'); 2705 } 2706 xar->file->has |= HAS_PATHNAME; 2707 if (xar->base64text) { 2708 strappend_base64(xar, 2709 &(xar->file->pathname), s, len); 2710 } else 2711 archive_strncat(&(xar->file->pathname), s, len); 2712 break; 2713 case FILE_LINK: 2714 xar->file->has |= HAS_SYMLINK; 2715 archive_strncpy(&(xar->file->symlink), s, len); 2716 break; 2717 case FILE_TYPE: 2718 if (is_string("file", s, len) == 0 || 2719 is_string("hardlink", s, len) == 0) 2720 xar->file->mode = 2721 (xar->file->mode & ~AE_IFMT) | AE_IFREG; 2722 if (is_string("directory", s, len) == 0) 2723 xar->file->mode = 2724 (xar->file->mode & ~AE_IFMT) | AE_IFDIR; 2725 if (is_string("symlink", s, len) == 0) 2726 xar->file->mode = 2727 (xar->file->mode & ~AE_IFMT) | AE_IFLNK; 2728 if (is_string("character special", s, len) == 0) 2729 xar->file->mode = 2730 (xar->file->mode & ~AE_IFMT) | AE_IFCHR; 2731 if (is_string("block special", s, len) == 0) 2732 xar->file->mode = 2733 (xar->file->mode & ~AE_IFMT) | AE_IFBLK; 2734 if (is_string("socket", s, len) == 0) 2735 xar->file->mode = 2736 (xar->file->mode & ~AE_IFMT) | AE_IFSOCK; 2737 if (is_string("fifo", s, len) == 0) 2738 xar->file->mode = 2739 (xar->file->mode & ~AE_IFMT) | AE_IFIFO; 2740 xar->file->has |= HAS_TYPE; 2741 break; 2742 case FILE_INODE: 2743 xar->file->has |= HAS_INO; 2744 xar->file->ino64 = atol10(s, len); 2745 break; 2746 case FILE_DEVICE_MAJOR: 2747 xar->file->has |= HAS_DEVMAJOR; 2748 xar->file->devmajor = (dev_t)atol10(s, len); 2749 break; 2750 case FILE_DEVICE_MINOR: 2751 xar->file->has |= HAS_DEVMINOR; 2752 xar->file->devminor = (dev_t)atol10(s, len); 2753 break; 2754 case FILE_DEVICENO: 2755 xar->file->has |= HAS_DEV; 2756 xar->file->dev = (dev_t)atol10(s, len); 2757 break; 2758 case FILE_MODE: 2759 xar->file->has |= HAS_MODE; 2760 xar->file->mode = 2761 (xar->file->mode & AE_IFMT) | 2762 ((mode_t)(atol8(s, len)) & ~AE_IFMT); 2763 break; 2764 case FILE_GROUP: 2765 xar->file->has |= HAS_GID; 2766 archive_strncpy(&(xar->file->gname), s, len); 2767 break; 2768 case FILE_GID: 2769 xar->file->has |= HAS_GID; 2770 xar->file->gid = atol10(s, len); 2771 break; 2772 case FILE_USER: 2773 xar->file->has |= HAS_UID; 2774 archive_strncpy(&(xar->file->uname), s, len); 2775 break; 2776 case FILE_UID: 2777 xar->file->has |= HAS_UID; 2778 xar->file->uid = atol10(s, len); 2779 break; 2780 case FILE_CTIME: 2781 xar->file->has |= HAS_TIME | HAS_CTIME; 2782 xar->file->ctime = parse_time(s, len); 2783 break; 2784 case FILE_MTIME: 2785 xar->file->has |= HAS_TIME | HAS_MTIME; 2786 xar->file->mtime = parse_time(s, len); 2787 break; 2788 case FILE_ATIME: 2789 xar->file->has |= HAS_TIME | HAS_ATIME; 2790 xar->file->atime = parse_time(s, len); 2791 break; 2792 case FILE_DATA_LENGTH: 2793 xar->file->has |= HAS_DATA; 2794 xar->file->length = atol10(s, len); 2795 break; 2796 case FILE_DATA_OFFSET: 2797 xar->file->has |= HAS_DATA; 2798 xar->file->offset = atol10(s, len); 2799 break; 2800 case FILE_DATA_SIZE: 2801 xar->file->has |= HAS_DATA; 2802 xar->file->size = atol10(s, len); 2803 break; 2804 case FILE_DATA_A_CHECKSUM: 2805 xar->file->a_sum.len = atohex(xar->file->a_sum.val, 2806 sizeof(xar->file->a_sum.val), s, len); 2807 break; 2808 case FILE_DATA_E_CHECKSUM: 2809 xar->file->e_sum.len = atohex(xar->file->e_sum.val, 2810 sizeof(xar->file->e_sum.val), s, len); 2811 break; 2812 case FILE_EA_LENGTH: 2813 xar->file->has |= HAS_XATTR; 2814 xar->xattr->length = atol10(s, len); 2815 break; 2816 case FILE_EA_OFFSET: 2817 xar->file->has |= HAS_XATTR; 2818 xar->xattr->offset = atol10(s, len); 2819 break; 2820 case FILE_EA_SIZE: 2821 xar->file->has |= HAS_XATTR; 2822 xar->xattr->size = atol10(s, len); 2823 break; 2824 case FILE_EA_A_CHECKSUM: 2825 xar->file->has |= HAS_XATTR; 2826 xar->xattr->a_sum.len = atohex(xar->xattr->a_sum.val, 2827 sizeof(xar->xattr->a_sum.val), s, len); 2828 break; 2829 case FILE_EA_E_CHECKSUM: 2830 xar->file->has |= HAS_XATTR; 2831 xar->xattr->e_sum.len = atohex(xar->xattr->e_sum.val, 2832 sizeof(xar->xattr->e_sum.val), s, len); 2833 break; 2834 case FILE_EA_NAME: 2835 xar->file->has |= HAS_XATTR; 2836 archive_strncpy(&(xar->xattr->name), s, len); 2837 break; 2838 case FILE_EA_FSTYPE: 2839 xar->file->has |= HAS_XATTR; 2840 archive_strncpy(&(xar->xattr->fstype), s, len); 2841 break; 2842 break; 2843 case FILE_ACL_DEFAULT: 2844 case FILE_ACL_ACCESS: 2845 case FILE_ACL_APPLEEXTENDED: 2846 xar->file->has |= HAS_ACL; 2847 /* TODO */ 2848 break; 2849 case INIT: 2850 case XAR: 2851 case TOC: 2852 case TOC_CREATION_TIME: 2853 case TOC_CHECKSUM: 2854 case TOC_CHECKSUM_OFFSET: 2855 case TOC_CHECKSUM_SIZE: 2856 case TOC_FILE: 2857 case FILE_DATA: 2858 case FILE_DATA_ENCODING: 2859 case FILE_DATA_CONTENT: 2860 case FILE_DEVICE: 2861 case FILE_EA: 2862 case FILE_EA_ENCODING: 2863 case FILE_ACL: 2864 case FILE_FLAGS: 2865 case FILE_FLAGS_USER_NODUMP: 2866 case FILE_FLAGS_USER_IMMUTABLE: 2867 case FILE_FLAGS_USER_APPEND: 2868 case FILE_FLAGS_USER_OPAQUE: 2869 case FILE_FLAGS_USER_NOUNLINK: 2870 case FILE_FLAGS_SYS_ARCHIVED: 2871 case FILE_FLAGS_SYS_IMMUTABLE: 2872 case FILE_FLAGS_SYS_APPEND: 2873 case FILE_FLAGS_SYS_NOUNLINK: 2874 case FILE_FLAGS_SYS_SNAPSHOT: 2875 case FILE_EXT2: 2876 case FILE_EXT2_SecureDeletion: 2877 case FILE_EXT2_Undelete: 2878 case FILE_EXT2_Compress: 2879 case FILE_EXT2_Synchronous: 2880 case FILE_EXT2_Immutable: 2881 case FILE_EXT2_AppendOnly: 2882 case FILE_EXT2_NoDump: 2883 case FILE_EXT2_NoAtime: 2884 case FILE_EXT2_CompDirty: 2885 case FILE_EXT2_CompBlock: 2886 case FILE_EXT2_NoCompBlock: 2887 case FILE_EXT2_CompError: 2888 case FILE_EXT2_BTree: 2889 case FILE_EXT2_HashIndexed: 2890 case FILE_EXT2_iMagic: 2891 case FILE_EXT2_Journaled: 2892 case FILE_EXT2_NoTail: 2893 case FILE_EXT2_DirSync: 2894 case FILE_EXT2_TopDir: 2895 case FILE_EXT2_Reserved: 2896 case UNKNOWN: 2897 break; 2898 } 2899 } 2900 2901 /* 2902 * BSD file flags. 2903 */ 2904 static int 2905 xml_parse_file_flags(struct xar *xar, const char *name) 2906 { 2907 const char *flag = NULL; 2908 2909 if (strcmp(name, "UserNoDump") == 0) { 2910 xar->xmlsts = FILE_FLAGS_USER_NODUMP; 2911 flag = "nodump"; 2912 } 2913 else if (strcmp(name, "UserImmutable") == 0) { 2914 xar->xmlsts = FILE_FLAGS_USER_IMMUTABLE; 2915 flag = "uimmutable"; 2916 } 2917 else if (strcmp(name, "UserAppend") == 0) { 2918 xar->xmlsts = FILE_FLAGS_USER_APPEND; 2919 flag = "uappend"; 2920 } 2921 else if (strcmp(name, "UserOpaque") == 0) { 2922 xar->xmlsts = FILE_FLAGS_USER_OPAQUE; 2923 flag = "opaque"; 2924 } 2925 else if (strcmp(name, "UserNoUnlink") == 0) { 2926 xar->xmlsts = FILE_FLAGS_USER_NOUNLINK; 2927 flag = "nouunlink"; 2928 } 2929 else if (strcmp(name, "SystemArchived") == 0) { 2930 xar->xmlsts = FILE_FLAGS_SYS_ARCHIVED; 2931 flag = "archived"; 2932 } 2933 else if (strcmp(name, "SystemImmutable") == 0) { 2934 xar->xmlsts = FILE_FLAGS_SYS_IMMUTABLE; 2935 flag = "simmutable"; 2936 } 2937 else if (strcmp(name, "SystemAppend") == 0) { 2938 xar->xmlsts = FILE_FLAGS_SYS_APPEND; 2939 flag = "sappend"; 2940 } 2941 else if (strcmp(name, "SystemNoUnlink") == 0) { 2942 xar->xmlsts = FILE_FLAGS_SYS_NOUNLINK; 2943 flag = "nosunlink"; 2944 } 2945 else if (strcmp(name, "SystemSnapshot") == 0) { 2946 xar->xmlsts = FILE_FLAGS_SYS_SNAPSHOT; 2947 flag = "snapshot"; 2948 } 2949 2950 if (flag == NULL) 2951 return (0); 2952 xar->file->has |= HAS_FFLAGS; 2953 if (archive_strlen(&(xar->file->fflags_text)) > 0) 2954 archive_strappend_char(&(xar->file->fflags_text), ','); 2955 archive_strcat(&(xar->file->fflags_text), flag); 2956 return (1); 2957 } 2958 2959 /* 2960 * Linux file flags. 2961 */ 2962 static int 2963 xml_parse_file_ext2(struct xar *xar, const char *name) 2964 { 2965 const char *flag = NULL; 2966 2967 if (strcmp(name, "SecureDeletion") == 0) { 2968 xar->xmlsts = FILE_EXT2_SecureDeletion; 2969 flag = "securedeletion"; 2970 } 2971 else if (strcmp(name, "Undelete") == 0) { 2972 xar->xmlsts = FILE_EXT2_Undelete; 2973 flag = "nouunlink"; 2974 } 2975 else if (strcmp(name, "Compress") == 0) { 2976 xar->xmlsts = FILE_EXT2_Compress; 2977 flag = "compress"; 2978 } 2979 else if (strcmp(name, "Synchronous") == 0) { 2980 xar->xmlsts = FILE_EXT2_Synchronous; 2981 flag = "sync"; 2982 } 2983 else if (strcmp(name, "Immutable") == 0) { 2984 xar->xmlsts = FILE_EXT2_Immutable; 2985 flag = "simmutable"; 2986 } 2987 else if (strcmp(name, "AppendOnly") == 0) { 2988 xar->xmlsts = FILE_EXT2_AppendOnly; 2989 flag = "sappend"; 2990 } 2991 else if (strcmp(name, "NoDump") == 0) { 2992 xar->xmlsts = FILE_EXT2_NoDump; 2993 flag = "nodump"; 2994 } 2995 else if (strcmp(name, "NoAtime") == 0) { 2996 xar->xmlsts = FILE_EXT2_NoAtime; 2997 flag = "noatime"; 2998 } 2999 else if (strcmp(name, "CompDirty") == 0) { 3000 xar->xmlsts = FILE_EXT2_CompDirty; 3001 flag = "compdirty"; 3002 } 3003 else if (strcmp(name, "CompBlock") == 0) { 3004 xar->xmlsts = FILE_EXT2_CompBlock; 3005 flag = "comprblk"; 3006 } 3007 else if (strcmp(name, "NoCompBlock") == 0) { 3008 xar->xmlsts = FILE_EXT2_NoCompBlock; 3009 flag = "nocomprblk"; 3010 } 3011 else if (strcmp(name, "CompError") == 0) { 3012 xar->xmlsts = FILE_EXT2_CompError; 3013 flag = "comperr"; 3014 } 3015 else if (strcmp(name, "BTree") == 0) { 3016 xar->xmlsts = FILE_EXT2_BTree; 3017 flag = "btree"; 3018 } 3019 else if (strcmp(name, "HashIndexed") == 0) { 3020 xar->xmlsts = FILE_EXT2_HashIndexed; 3021 flag = "hashidx"; 3022 } 3023 else if (strcmp(name, "iMagic") == 0) { 3024 xar->xmlsts = FILE_EXT2_iMagic; 3025 flag = "imagic"; 3026 } 3027 else if (strcmp(name, "Journaled") == 0) { 3028 xar->xmlsts = FILE_EXT2_Journaled; 3029 flag = "journal"; 3030 } 3031 else if (strcmp(name, "NoTail") == 0) { 3032 xar->xmlsts = FILE_EXT2_NoTail; 3033 flag = "notail"; 3034 } 3035 else if (strcmp(name, "DirSync") == 0) { 3036 xar->xmlsts = FILE_EXT2_DirSync; 3037 flag = "dirsync"; 3038 } 3039 else if (strcmp(name, "TopDir") == 0) { 3040 xar->xmlsts = FILE_EXT2_TopDir; 3041 flag = "topdir"; 3042 } 3043 else if (strcmp(name, "Reserved") == 0) { 3044 xar->xmlsts = FILE_EXT2_Reserved; 3045 flag = "reserved"; 3046 } 3047 3048 if (flag == NULL) 3049 return (0); 3050 if (archive_strlen(&(xar->file->fflags_text)) > 0) 3051 archive_strappend_char(&(xar->file->fflags_text), ','); 3052 archive_strcat(&(xar->file->fflags_text), flag); 3053 return (1); 3054 } 3055 3056 #ifdef HAVE_LIBXML_XMLREADER_H 3057 3058 static int 3059 xml2_xmlattr_setup(struct archive_read *a, 3060 struct xmlattr_list *list, xmlTextReaderPtr reader) 3061 { 3062 struct xmlattr *attr; 3063 int r; 3064 3065 list->first = NULL; 3066 list->last = &(list->first); 3067 r = xmlTextReaderMoveToFirstAttribute(reader); 3068 while (r == 1) { 3069 attr = malloc(sizeof*(attr)); 3070 if (attr == NULL) { 3071 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 3072 return (ARCHIVE_FATAL); 3073 } 3074 attr->name = strdup( 3075 (const char *)xmlTextReaderConstLocalName(reader)); 3076 if (attr->name == NULL) { 3077 free(attr); 3078 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 3079 return (ARCHIVE_FATAL); 3080 } 3081 attr->value = strdup( 3082 (const char *)xmlTextReaderConstValue(reader)); 3083 if (attr->value == NULL) { 3084 free(attr->name); 3085 free(attr); 3086 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 3087 return (ARCHIVE_FATAL); 3088 } 3089 attr->next = NULL; 3090 *list->last = attr; 3091 list->last = &(attr->next); 3092 r = xmlTextReaderMoveToNextAttribute(reader); 3093 } 3094 return (r); 3095 } 3096 3097 static int 3098 xml2_read_cb(void *context, char *buffer, int len) 3099 { 3100 struct archive_read *a; 3101 struct xar *xar; 3102 const void *d; 3103 size_t outbytes; 3104 size_t used = 0; 3105 int r; 3106 3107 a = (struct archive_read *)context; 3108 xar = (struct xar *)(a->format->data); 3109 3110 if (xar->toc_remaining <= 0) 3111 return (0); 3112 d = buffer; 3113 outbytes = len; 3114 r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining); 3115 if (r != ARCHIVE_OK) 3116 return (r); 3117 __archive_read_consume(a, used); 3118 xar->toc_remaining -= used; 3119 xar->offset += used; 3120 xar->toc_total += outbytes; 3121 PRINT_TOC(buffer, len); 3122 3123 return ((int)outbytes); 3124 } 3125 3126 static int 3127 xml2_close_cb(void *context) 3128 { 3129 3130 (void)context; /* UNUSED */ 3131 return (0); 3132 } 3133 3134 static void 3135 xml2_error_hdr(void *arg, const char *msg, xmlParserSeverities severity, 3136 xmlTextReaderLocatorPtr locator) 3137 { 3138 struct archive_read *a; 3139 3140 (void)locator; /* UNUSED */ 3141 a = (struct archive_read *)arg; 3142 switch (severity) { 3143 case XML_PARSER_SEVERITY_VALIDITY_WARNING: 3144 case XML_PARSER_SEVERITY_WARNING: 3145 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 3146 "XML Parsing error: %s", msg); 3147 break; 3148 case XML_PARSER_SEVERITY_VALIDITY_ERROR: 3149 case XML_PARSER_SEVERITY_ERROR: 3150 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 3151 "XML Parsing error: %s", msg); 3152 break; 3153 } 3154 } 3155 3156 static int 3157 xml2_read_toc(struct archive_read *a) 3158 { 3159 xmlTextReaderPtr reader; 3160 struct xmlattr_list list; 3161 int r; 3162 3163 reader = xmlReaderForIO(xml2_read_cb, xml2_close_cb, a, NULL, NULL, 0); 3164 if (reader == NULL) { 3165 archive_set_error(&a->archive, ENOMEM, 3166 "Couldn't allocate memory for xml parser"); 3167 return (ARCHIVE_FATAL); 3168 } 3169 xmlTextReaderSetErrorHandler(reader, xml2_error_hdr, a); 3170 3171 while ((r = xmlTextReaderRead(reader)) == 1) { 3172 const char *name, *value; 3173 int type, empty; 3174 3175 type = xmlTextReaderNodeType(reader); 3176 name = (const char *)xmlTextReaderConstLocalName(reader); 3177 switch (type) { 3178 case XML_READER_TYPE_ELEMENT: 3179 empty = xmlTextReaderIsEmptyElement(reader); 3180 r = xml2_xmlattr_setup(a, &list, reader); 3181 if (r == ARCHIVE_OK) 3182 r = xml_start(a, name, &list); 3183 xmlattr_cleanup(&list); 3184 if (r != ARCHIVE_OK) 3185 return (r); 3186 if (empty) 3187 xml_end(a, name); 3188 break; 3189 case XML_READER_TYPE_END_ELEMENT: 3190 xml_end(a, name); 3191 break; 3192 case XML_READER_TYPE_TEXT: 3193 value = (const char *)xmlTextReaderConstValue(reader); 3194 xml_data(a, value, strlen(value)); 3195 break; 3196 case XML_READER_TYPE_SIGNIFICANT_WHITESPACE: 3197 default: 3198 break; 3199 } 3200 if (r < 0) 3201 break; 3202 } 3203 xmlFreeTextReader(reader); 3204 xmlCleanupParser(); 3205 3206 return ((r == 0)?ARCHIVE_OK:ARCHIVE_FATAL); 3207 } 3208 3209 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) 3210 3211 static int 3212 expat_xmlattr_setup(struct archive_read *a, 3213 struct xmlattr_list *list, const XML_Char **atts) 3214 { 3215 struct xmlattr *attr; 3216 char *name, *value; 3217 3218 list->first = NULL; 3219 list->last = &(list->first); 3220 if (atts == NULL) 3221 return (ARCHIVE_OK); 3222 while (atts[0] != NULL && atts[1] != NULL) { 3223 attr = malloc(sizeof*(attr)); 3224 name = strdup(atts[0]); 3225 value = strdup(atts[1]); 3226 if (attr == NULL || name == NULL || value == NULL) { 3227 archive_set_error(&a->archive, ENOMEM, "Out of memory"); 3228 free(attr); 3229 free(name); 3230 free(value); 3231 return (ARCHIVE_FATAL); 3232 } 3233 attr->name = name; 3234 attr->value = value; 3235 attr->next = NULL; 3236 *list->last = attr; 3237 list->last = &(attr->next); 3238 atts += 2; 3239 } 3240 return (ARCHIVE_OK); 3241 } 3242 3243 static void 3244 expat_start_cb(void *userData, const XML_Char *name, const XML_Char **atts) 3245 { 3246 struct expat_userData *ud = (struct expat_userData *)userData; 3247 struct archive_read *a = ud->archive; 3248 struct xmlattr_list list; 3249 int r; 3250 3251 r = expat_xmlattr_setup(a, &list, atts); 3252 if (r == ARCHIVE_OK) 3253 r = xml_start(a, (const char *)name, &list); 3254 xmlattr_cleanup(&list); 3255 ud->state = r; 3256 } 3257 3258 static void 3259 expat_end_cb(void *userData, const XML_Char *name) 3260 { 3261 struct expat_userData *ud = (struct expat_userData *)userData; 3262 3263 xml_end(ud->archive, (const char *)name); 3264 } 3265 3266 static void 3267 expat_data_cb(void *userData, const XML_Char *s, int len) 3268 { 3269 struct expat_userData *ud = (struct expat_userData *)userData; 3270 3271 xml_data(ud->archive, s, len); 3272 } 3273 3274 static int 3275 expat_read_toc(struct archive_read *a) 3276 { 3277 struct xar *xar; 3278 XML_Parser parser; 3279 struct expat_userData ud; 3280 3281 ud.state = ARCHIVE_OK; 3282 ud.archive = a; 3283 3284 xar = (struct xar *)(a->format->data); 3285 3286 /* Initialize XML Parser library. */ 3287 parser = XML_ParserCreate(NULL); 3288 if (parser == NULL) { 3289 archive_set_error(&a->archive, ENOMEM, 3290 "Couldn't allocate memory for xml parser"); 3291 return (ARCHIVE_FATAL); 3292 } 3293 XML_SetUserData(parser, &ud); 3294 XML_SetElementHandler(parser, expat_start_cb, expat_end_cb); 3295 XML_SetCharacterDataHandler(parser, expat_data_cb); 3296 xar->xmlsts = INIT; 3297 3298 while (xar->toc_remaining && ud.state == ARCHIVE_OK) { 3299 enum XML_Status xr; 3300 const void *d; 3301 size_t outbytes; 3302 size_t used; 3303 int r; 3304 3305 d = NULL; 3306 r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining); 3307 if (r != ARCHIVE_OK) 3308 return (r); 3309 xar->toc_remaining -= used; 3310 xar->offset += used; 3311 xar->toc_total += outbytes; 3312 PRINT_TOC(d, outbytes); 3313 3314 xr = XML_Parse(parser, d, outbytes, xar->toc_remaining == 0); 3315 __archive_read_consume(a, used); 3316 if (xr == XML_STATUS_ERROR) { 3317 XML_ParserFree(parser); 3318 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 3319 "XML Parsing failed"); 3320 return (ARCHIVE_FATAL); 3321 } 3322 } 3323 XML_ParserFree(parser); 3324 return (ud.state); 3325 } 3326 #endif /* defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) */ 3327 3328 #endif /* Support xar format */ 3329