contrib/libarchive/libarchive/archive_read_support_format_xar.c

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