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                 free(heap->files);
1233                 heap->files = new_pending_files;
1234                 heap->allocated = new_size;
1235         }
1236
1237         file_id = file->id;
1238
1239         /*
1240          * Start with hole at end, walk it up tree to find insertion point.
1241          */
1242         hole = heap->used++;
1243         while (hole > 0) {
1244                 parent = (hole - 1)/2;
1245                 parent_id = heap->files[parent]->id;
1246                 if (file_id >= parent_id) {
1247                         heap->files[hole] = file;
1248                         return (ARCHIVE_OK);
1249                 }
1250                 /* Move parent into hole <==> move hole up tree. */
1251                 heap->files[hole] = heap->files[parent];
1252                 hole = parent;
1253         }
1254         heap->files[0] = file;
1255
1256         return (ARCHIVE_OK);
1257 }
1258
1259 static struct xar_file *
1260 heap_get_entry(struct heap_queue *heap)
1261 {
1262         uint64_t a_id, b_id, c_id;
1263         int a, b, c;
1264         struct xar_file *r, *tmp;
1265
1266         if (heap->used < 1)
1267                 return (NULL);
1268
1269         /*
1270          * The first file in the list is the earliest; we'll return this.
1271          */
1272         r = heap->files[0];
1273
1274         /*
1275          * Move the last item in the heap to the root of the tree
1276          */
1277         heap->files[0] = heap->files[--(heap->used)];
1278
1279         /*
1280          * Rebalance the heap.
1281          */
1282         a = 0; /* Starting element and its heap key */
1283         a_id = heap->files[a]->id;
1284         for (;;) {
1285                 b = a + a + 1; /* First child */
1286                 if (b >= heap->used)
1287                         return (r);
1288                 b_id = heap->files[b]->id;
1289                 c = b + 1; /* Use second child if it is smaller. */
1290                 if (c < heap->used) {
1291                         c_id = heap->files[c]->id;
1292                         if (c_id < b_id) {
1293                                 b = c;
1294                                 b_id = c_id;
1295                         }
1296                 }
1297                 if (a_id <= b_id)
1298                         return (r);
1299                 tmp = heap->files[a];
1300                 heap->files[a] = heap->files[b];
1301                 heap->files[b] = tmp;
1302                 a = b;
1303         }
1304 }
1305
1306 static int
1307 add_link(struct archive_read *a, struct xar *xar, struct xar_file *file)
1308 {
1309         struct hdlink *hdlink;
1310
1311         for (hdlink = xar->hdlink_list; hdlink != NULL; hdlink = hdlink->next) {
1312                 if (hdlink->id == file->link) {
1313                         file->hdnext = hdlink->files;
1314                         hdlink->cnt++;
1315                         hdlink->files = file;
1316                         return (ARCHIVE_OK);
1317                 }
1318         }
1319         hdlink = malloc(sizeof(*hdlink));
1320         if (hdlink == NULL) {
1321                 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1322                 return (ARCHIVE_FATAL);
1323         }
1324         file->hdnext = NULL;
1325         hdlink->id = file->link;
1326         hdlink->cnt = 1;
1327         hdlink->files = file;
1328         hdlink->next = xar->hdlink_list;
1329         xar->hdlink_list = hdlink;
1330         return (ARCHIVE_OK);
1331 }
1332
1333 static void
1334 _checksum_init(struct chksumwork *sumwrk, int sum_alg)
1335 {
1336         sumwrk->alg = sum_alg;
1337         switch (sum_alg) {
1338         case CKSUM_NONE:
1339                 break;
1340         case CKSUM_SHA1:
1341                 archive_sha1_init(&(sumwrk->sha1ctx));
1342                 break;
1343         case CKSUM_MD5:
1344                 archive_md5_init(&(sumwrk->md5ctx));
1345                 break;
1346         }
1347 }
1348
1349 static void
1350 _checksum_update(struct chksumwork *sumwrk, const void *buff, size_t size)
1351 {
1352
1353         switch (sumwrk->alg) {
1354         case CKSUM_NONE:
1355                 break;
1356         case CKSUM_SHA1:
1357                 archive_sha1_update(&(sumwrk->sha1ctx), buff, size);
1358                 break;
1359         case CKSUM_MD5:
1360                 archive_md5_update(&(sumwrk->md5ctx), buff, size);
1361                 break;
1362         }
1363 }
1364
1365 static int
1366 _checksum_final(struct chksumwork *sumwrk, const void *val, size_t len)
1367 {
1368         unsigned char sum[MAX_SUM_SIZE];
1369         int r = ARCHIVE_OK;
1370
1371         switch (sumwrk->alg) {
1372         case CKSUM_NONE:
1373                 break;
1374         case CKSUM_SHA1:
1375                 archive_sha1_final(&(sumwrk->sha1ctx), sum);
1376                 if (len != SHA1_SIZE ||
1377                     memcmp(val, sum, SHA1_SIZE) != 0)
1378                         r = ARCHIVE_FAILED;
1379                 break;
1380         case CKSUM_MD5:
1381                 archive_md5_final(&(sumwrk->md5ctx), sum);
1382                 if (len != MD5_SIZE ||
1383                     memcmp(val, sum, MD5_SIZE) != 0)
1384                         r = ARCHIVE_FAILED;
1385                 break;
1386         }
1387         return (r);
1388 }
1389
1390 static void
1391 checksum_init(struct archive_read *a, int a_sum_alg, int e_sum_alg)
1392 {
1393         struct xar *xar;
1394
1395         xar = (struct xar *)(a->format->data);
1396         _checksum_init(&(xar->a_sumwrk), a_sum_alg);
1397         _checksum_init(&(xar->e_sumwrk), e_sum_alg);
1398 }
1399
1400 static void
1401 checksum_update(struct archive_read *a, const void *abuff, size_t asize,
1402     const void *ebuff, size_t esize)
1403 {
1404         struct xar *xar;
1405
1406         xar = (struct xar *)(a->format->data);
1407         _checksum_update(&(xar->a_sumwrk), abuff, asize);
1408         _checksum_update(&(xar->e_sumwrk), ebuff, esize);
1409 }
1410
1411 static int
1412 checksum_final(struct archive_read *a, const void *a_sum_val,
1413     size_t a_sum_len, const void *e_sum_val, size_t e_sum_len)
1414 {
1415         struct xar *xar;
1416         int r;
1417
1418         xar = (struct xar *)(a->format->data);
1419         r = _checksum_final(&(xar->a_sumwrk), a_sum_val, a_sum_len);
1420         if (r == ARCHIVE_OK)
1421                 r = _checksum_final(&(xar->e_sumwrk), e_sum_val, e_sum_len);
1422         if (r != ARCHIVE_OK)
1423                 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
1424                     "Sumcheck error");
1425         return (r);
1426 }
1427
1428 static int
1429 decompression_init(struct archive_read *a, enum enctype encoding)
1430 {
1431         struct xar *xar;
1432         const char *detail;
1433         int r;
1434
1435         xar = (struct xar *)(a->format->data);
1436         xar->rd_encoding = encoding;
1437         switch (encoding) {
1438         case NONE:
1439                 break;
1440         case GZIP:
1441                 if (xar->stream_valid)
1442                         r = inflateReset(&(xar->stream));
1443                 else
1444                         r = inflateInit(&(xar->stream));
1445                 if (r != Z_OK) {
1446                         archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1447                             "Couldn't initialize zlib stream.");
1448                         return (ARCHIVE_FATAL);
1449                 }
1450                 xar->stream_valid = 1;
1451                 xar->stream.total_in = 0;
1452                 xar->stream.total_out = 0;
1453                 break;
1454 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1455         case BZIP2:
1456                 if (xar->bzstream_valid) {
1457                         BZ2_bzDecompressEnd(&(xar->bzstream));
1458                         xar->bzstream_valid = 0;
1459                 }
1460                 r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 0);
1461                 if (r == BZ_MEM_ERROR)
1462                         r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 1);
1463                 if (r != BZ_OK) {
1464                         int err = ARCHIVE_ERRNO_MISC;
1465                         detail = NULL;
1466                         switch (r) {
1467                         case BZ_PARAM_ERROR:
1468                                 detail = "invalid setup parameter";
1469                                 break;
1470                         case BZ_MEM_ERROR:
1471                                 err = ENOMEM;
1472                                 detail = "out of memory";
1473                                 break;
1474                         case BZ_CONFIG_ERROR:
1475                                 detail = "mis-compiled library";
1476                                 break;
1477                         }
1478                         archive_set_error(&a->archive, err,
1479                             "Internal error initializing decompressor: %s",
1480                             detail == NULL ? "??" : detail);
1481                         xar->bzstream_valid = 0;
1482                         return (ARCHIVE_FATAL);
1483                 }
1484                 xar->bzstream_valid = 1;
1485                 xar->bzstream.total_in_lo32 = 0;
1486                 xar->bzstream.total_in_hi32 = 0;
1487                 xar->bzstream.total_out_lo32 = 0;
1488                 xar->bzstream.total_out_hi32 = 0;
1489                 break;
1490 #endif
1491 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1492 #if LZMA_VERSION_MAJOR >= 5
1493 /* Effectively disable the limiter. */
1494 #define LZMA_MEMLIMIT   UINT64_MAX
1495 #else
1496 /* NOTE: This needs to check memory size which running system has. */
1497 #define LZMA_MEMLIMIT   (1U << 30)
1498 #endif
1499         case XZ:
1500         case LZMA:
1501                 if (xar->lzstream_valid) {
1502                         lzma_end(&(xar->lzstream));
1503                         xar->lzstream_valid = 0;
1504                 }
1505                 if (xar->entry_encoding == XZ)
1506                         r = lzma_stream_decoder(&(xar->lzstream),
1507                             LZMA_MEMLIMIT,/* memlimit */
1508                             LZMA_CONCATENATED);
1509                 else
1510                         r = lzma_alone_decoder(&(xar->lzstream),
1511                             LZMA_MEMLIMIT);/* memlimit */
1512                 if (r != LZMA_OK) {
1513                         switch (r) {
1514                         case LZMA_MEM_ERROR:
1515                                 archive_set_error(&a->archive,
1516                                     ENOMEM,
1517                                     "Internal error initializing "
1518                                     "compression library: "
1519                                     "Cannot allocate memory");
1520                                 break;
1521                         case LZMA_OPTIONS_ERROR:
1522                                 archive_set_error(&a->archive,
1523                                     ARCHIVE_ERRNO_MISC,
1524                                     "Internal error initializing "
1525                                     "compression library: "
1526                                     "Invalid or unsupported options");
1527                                 break;
1528                         default:
1529                                 archive_set_error(&a->archive,
1530                                     ARCHIVE_ERRNO_MISC,
1531                                     "Internal error initializing "
1532                                     "lzma library");
1533                                 break;
1534                         }
1535                         return (ARCHIVE_FATAL);
1536                 }
1537                 xar->lzstream_valid = 1;
1538                 xar->lzstream.total_in = 0;
1539                 xar->lzstream.total_out = 0;
1540                 break;
1541 #endif
1542         /*
1543          * Unsupported compression.
1544          */
1545         default:
1546 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR)
1547         case BZIP2:
1548 #endif
1549 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
1550         case LZMA:
1551         case XZ:
1552 #endif
1553                 switch (xar->entry_encoding) {
1554                 case BZIP2: detail = "bzip2"; break;
1555                 case LZMA: detail = "lzma"; break;
1556                 case XZ: detail = "xz"; break;
1557                 default: detail = "??"; break;
1558                 }
1559                 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1560                     "%s compression not supported on this platform",
1561                     detail);
1562                 return (ARCHIVE_FAILED);
1563         }
1564         return (ARCHIVE_OK);
1565 }
1566
1567 static int
1568 decompress(struct archive_read *a, const void **buff, size_t *outbytes,
1569     const void *b, size_t *used)
1570 {
1571         struct xar *xar;
1572         void *outbuff;
1573         size_t avail_in, avail_out;
1574         int r;
1575
1576         xar = (struct xar *)(a->format->data);
1577         avail_in = *used;
1578         outbuff = (void *)(uintptr_t)*buff;
1579         if (outbuff == NULL) {
1580                 if (xar->outbuff == NULL) {
1581                         xar->outbuff = malloc(OUTBUFF_SIZE);
1582                         if (xar->outbuff == NULL) {
1583                                 archive_set_error(&a->archive, ENOMEM,
1584                                     "Couldn't allocate memory for out buffer");
1585                                 return (ARCHIVE_FATAL);
1586                         }
1587                 }
1588                 outbuff = xar->outbuff;
1589                 *buff = outbuff;
1590                 avail_out = OUTBUFF_SIZE;
1591         } else
1592                 avail_out = *outbytes;
1593         switch (xar->rd_encoding) {
1594         case GZIP:
1595                 xar->stream.next_in = (Bytef *)(uintptr_t)b;
1596                 xar->stream.avail_in = avail_in;
1597                 xar->stream.next_out = (unsigned char *)outbuff;
1598                 xar->stream.avail_out = avail_out;
1599                 r = inflate(&(xar->stream), 0);
1600                 switch (r) {
1601                 case Z_OK: /* Decompressor made some progress.*/
1602                 case Z_STREAM_END: /* Found end of stream. */
1603                         break;
1604                 default:
1605                         archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1606                             "File decompression failed (%d)", r);
1607                         return (ARCHIVE_FATAL);
1608                 }
1609                 *used = avail_in - xar->stream.avail_in;
1610                 *outbytes = avail_out - xar->stream.avail_out;
1611                 break;
1612 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1613         case BZIP2:
1614                 xar->bzstream.next_in = (char *)(uintptr_t)b;
1615                 xar->bzstream.avail_in = avail_in;
1616                 xar->bzstream.next_out = (char *)outbuff;
1617                 xar->bzstream.avail_out = avail_out;
1618                 r = BZ2_bzDecompress(&(xar->bzstream));
1619                 switch (r) {
1620                 case BZ_STREAM_END: /* Found end of stream. */
1621                         switch (BZ2_bzDecompressEnd(&(xar->bzstream))) {
1622                         case BZ_OK:
1623                                 break;
1624                         default:
1625                                 archive_set_error(&(a->archive),
1626                                     ARCHIVE_ERRNO_MISC,
1627                                     "Failed to clean up decompressor");
1628                                 return (ARCHIVE_FATAL);
1629                         }
1630                         xar->bzstream_valid = 0;
1631                         /* FALLTHROUGH */
1632                 case BZ_OK: /* Decompressor made some progress. */
1633                         break;
1634                 default:
1635                         archive_set_error(&(a->archive),
1636                             ARCHIVE_ERRNO_MISC,
1637                             "bzip decompression failed");
1638                         return (ARCHIVE_FATAL);
1639                 }
1640                 *used = avail_in - xar->bzstream.avail_in;
1641                 *outbytes = avail_out - xar->bzstream.avail_out;
1642                 break;
1643 #endif
1644 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1645         case LZMA:
1646         case XZ:
1647                 xar->lzstream.next_in = b;
1648                 xar->lzstream.avail_in = avail_in;
1649                 xar->lzstream.next_out = (unsigned char *)outbuff;
1650                 xar->lzstream.avail_out = avail_out;
1651                 r = lzma_code(&(xar->lzstream), LZMA_RUN);
1652                 switch (r) {
1653                 case LZMA_STREAM_END: /* Found end of stream. */
1654                         lzma_end(&(xar->lzstream));
1655                         xar->lzstream_valid = 0;
1656                         /* FALLTHROUGH */
1657                 case LZMA_OK: /* Decompressor made some progress. */
1658                         break;
1659                 default:
1660                         archive_set_error(&(a->archive),
1661                             ARCHIVE_ERRNO_MISC,
1662                             "%s decompression failed(%d)",
1663                             (xar->entry_encoding == XZ)?"xz":"lzma",
1664                             r);
1665                         return (ARCHIVE_FATAL);
1666                 }
1667                 *used = avail_in - xar->lzstream.avail_in;
1668                 *outbytes = avail_out - xar->lzstream.avail_out;
1669                 break;
1670 #endif
1671 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR)
1672         case BZIP2:
1673 #endif
1674 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
1675         case LZMA:
1676         case XZ:
1677 #endif
1678         case NONE:
1679         default:
1680                 if (outbuff == xar->outbuff) {
1681                         *buff = b;
1682                         *used = avail_in;
1683                         *outbytes = avail_in;
1684                 } else {
1685                         if (avail_out > avail_in)
1686                                 avail_out = avail_in;
1687                         memcpy(outbuff, b, avail_out);
1688                         *used = avail_out;
1689                         *outbytes = avail_out;
1690                 }
1691                 break;
1692         }
1693         return (ARCHIVE_OK);
1694 }
1695
1696 static int
1697 decompression_cleanup(struct archive_read *a)
1698 {
1699         struct xar *xar;
1700         int r;
1701
1702         xar = (struct xar *)(a->format->data);
1703         r = ARCHIVE_OK;
1704         if (xar->stream_valid) {
1705                 if (inflateEnd(&(xar->stream)) != Z_OK) {
1706                         archive_set_error(&a->archive,
1707                             ARCHIVE_ERRNO_MISC,
1708                             "Failed to clean up zlib decompressor");
1709                         r = ARCHIVE_FATAL;
1710                 }
1711         }
1712 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1713         if (xar->bzstream_valid) {
1714                 if (BZ2_bzDecompressEnd(&(xar->bzstream)) != BZ_OK) {
1715                         archive_set_error(&a->archive,
1716                             ARCHIVE_ERRNO_MISC,
1717                             "Failed to clean up bzip2 decompressor");
1718                         r = ARCHIVE_FATAL;
1719                 }
1720         }
1721 #endif
1722 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1723         if (xar->lzstream_valid)
1724                 lzma_end(&(xar->lzstream));
1725 #elif defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1726         if (xar->lzstream_valid) {
1727                 if (lzmadec_end(&(xar->lzstream)) != LZMADEC_OK) {
1728                         archive_set_error(&a->archive,
1729                             ARCHIVE_ERRNO_MISC,
1730                             "Failed to clean up lzmadec decompressor");
1731                         r = ARCHIVE_FATAL;
1732                 }
1733         }
1734 #endif
1735         return (r);
1736 }
1737
1738 static void
1739 checksum_cleanup(struct archive_read *a) {
1740         struct xar *xar;
1741
1742         xar = (struct xar *)(a->format->data);
1743
1744         _checksum_final(&(xar->a_sumwrk), NULL, 0);
1745         _checksum_final(&(xar->e_sumwrk), NULL, 0);
1746 }
1747
1748 static void
1749 xmlattr_cleanup(struct xmlattr_list *list)
1750 {
1751         struct xmlattr *attr, *next;
1752
1753         attr = list->first;
1754         while (attr != NULL) {
1755                 next = attr->next;
1756                 free(attr->name);
1757                 free(attr->value);
1758                 free(attr);
1759                 attr = next;
1760         }
1761         list->first = NULL;
1762         list->last = &(list->first);
1763 }
1764
1765 static int
1766 file_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list)
1767 {
1768         struct xar_file *file;
1769         struct xmlattr *attr;
1770
1771         file = calloc(1, sizeof(*file));
1772         if (file == NULL) {
1773                 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1774                 return (ARCHIVE_FATAL);
1775         }
1776         file->parent = xar->file;
1777         file->mode = 0777 | AE_IFREG;
1778         file->atime =  0;
1779         file->mtime = 0;
1780         xar->file = file;
1781         xar->xattr = NULL;
1782         for (attr = list->first; attr != NULL; attr = attr->next) {
1783                 if (strcmp(attr->name, "id") == 0)
1784                         file->id = atol10(attr->value, strlen(attr->value));
1785         }
1786         file->nlink = 1;
1787         if (heap_add_entry(a, &(xar->file_queue), file) != ARCHIVE_OK)
1788                 return (ARCHIVE_FATAL);
1789         return (ARCHIVE_OK);
1790 }
1791
1792 static void
1793 file_free(struct xar_file *file)
1794 {
1795         struct xattr *xattr;
1796
1797         archive_string_free(&(file->pathname));
1798         archive_string_free(&(file->symlink));
1799         archive_string_free(&(file->uname));
1800         archive_string_free(&(file->gname));
1801         archive_string_free(&(file->hardlink));
1802         xattr = file->xattr_list;
1803         while (xattr != NULL) {
1804                 struct xattr *next;
1805
1806                 next = xattr->next;
1807                 xattr_free(xattr);
1808                 xattr = next;
1809         }
1810
1811         free(file);
1812 }
1813
1814 static int
1815 xattr_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list)
1816 {
1817         struct xattr *xattr, **nx;
1818         struct xmlattr *attr;
1819
1820         xattr = calloc(1, sizeof(*xattr));
1821         if (xattr == NULL) {
1822                 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1823                 return (ARCHIVE_FATAL);
1824         }
1825         xar->xattr = xattr;
1826         for (attr = list->first; attr != NULL; attr = attr->next) {
1827                 if (strcmp(attr->name, "id") == 0)
1828                         xattr->id = atol10(attr->value, strlen(attr->value));
1829         }
1830         /* Chain to xattr list. */
1831         for (nx = &(xar->file->xattr_list);
1832             *nx != NULL; nx = &((*nx)->next)) {
1833                 if (xattr->id < (*nx)->id)
1834                         break;
1835         }
1836         xattr->next = *nx;
1837         *nx = xattr;
1838
1839         return (ARCHIVE_OK);
1840 }
1841
1842 static void
1843 xattr_free(struct xattr *xattr)
1844 {
1845         archive_string_free(&(xattr->name));
1846         free(xattr);
1847 }
1848
1849 static int
1850 getencoding(struct xmlattr_list *list)
1851 {
1852         struct xmlattr *attr;
1853         enum enctype encoding = NONE;
1854
1855         for (attr = list->first; attr != NULL; attr = attr->next) {
1856                 if (strcmp(attr->name, "style") == 0) {
1857                         if (strcmp(attr->value, "application/octet-stream") == 0)
1858                                 encoding = NONE;
1859                         else if (strcmp(attr->value, "application/x-gzip") == 0)
1860                                 encoding = GZIP;
1861                         else if (strcmp(attr->value, "application/x-bzip2") == 0)
1862                                 encoding = BZIP2;
1863                         else if (strcmp(attr->value, "application/x-lzma") == 0)
1864                                 encoding = LZMA;
1865                         else if (strcmp(attr->value, "application/x-xz") == 0)
1866                                 encoding = XZ;
1867                 }
1868         }
1869         return (encoding);
1870 }
1871
1872 static int
1873 getsumalgorithm(struct xmlattr_list *list)
1874 {
1875         struct xmlattr *attr;
1876         int alg = CKSUM_NONE;
1877
1878         for (attr = list->first; attr != NULL; attr = attr->next) {
1879                 if (strcmp(attr->name, "style") == 0) {
1880                         const char *v = attr->value;
1881                         if ((v[0] == 'S' || v[0] == 's') &&
1882                             (v[1] == 'H' || v[1] == 'h') &&
1883                             (v[2] == 'A' || v[2] == 'a') &&
1884                             v[3] == '1' && v[4] == '\0')
1885                                 alg = CKSUM_SHA1;
1886                         if ((v[0] == 'M' || v[0] == 'm') &&
1887                             (v[1] == 'D' || v[1] == 'd') &&
1888                             v[2] == '5' && v[3] == '\0')
1889                                 alg = CKSUM_MD5;
1890                 }
1891         }
1892         return (alg);
1893 }
1894
1895 static int
1896 unknowntag_start(struct archive_read *a, struct xar *xar, const char *name)
1897 {
1898         struct unknown_tag *tag;
1899
1900         tag = malloc(sizeof(*tag));
1901         if (tag == NULL) {
1902                 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1903                 return (ARCHIVE_FATAL);
1904         }
1905         tag->next = xar->unknowntags;
1906         archive_string_init(&(tag->name));
1907         archive_strcpy(&(tag->name), name);
1908         if (xar->unknowntags == NULL) {
1909 #if DEBUG
1910                 fprintf(stderr, "UNKNOWNTAG_START:%s\n", name);
1911 #endif
1912                 xar->xmlsts_unknown = xar->xmlsts;
1913                 xar->xmlsts = UNKNOWN;
1914         }
1915         xar->unknowntags = tag;
1916         return (ARCHIVE_OK);
1917 }
1918
1919 static void
1920 unknowntag_end(struct xar *xar, const char *name)
1921 {
1922         struct unknown_tag *tag;
1923
1924         tag = xar->unknowntags;
1925         if (tag == NULL || name == NULL)
1926                 return;
1927         if (strcmp(tag->name.s, name) == 0) {
1928                 xar->unknowntags = tag->next;
1929                 archive_string_free(&(tag->name));
1930                 free(tag);
1931                 if (xar->unknowntags == NULL) {
1932 #if DEBUG
1933                         fprintf(stderr, "UNKNOWNTAG_END:%s\n", name);
1934 #endif
1935                         xar->xmlsts = xar->xmlsts_unknown;
1936                 }
1937         }
1938 }
1939
1940 static int
1941 xml_start(struct archive_read *a, const char *name, struct xmlattr_list *list)
1942 {
1943         struct xar *xar;
1944         struct xmlattr *attr;
1945
1946         xar = (struct xar *)(a->format->data);
1947
1948 #if DEBUG
1949         fprintf(stderr, "xml_sta:[%s]\n", name);
1950         for (attr = list->first; attr != NULL; attr = attr->next)
1951                 fprintf(stderr, "    attr:\"%s\"=\"%s\"\n",
1952                     attr->name, attr->value);
1953 #endif
1954         xar->base64text = 0;
1955         switch (xar->xmlsts) {
1956         case INIT:
1957                 if (strcmp(name, "xar") == 0)
1958                         xar->xmlsts = XAR;
1959                 else
1960                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1961                                 return (ARCHIVE_FATAL);
1962                 break;
1963         case XAR:
1964                 if (strcmp(name, "toc") == 0)
1965                         xar->xmlsts = TOC;
1966                 else
1967                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1968                                 return (ARCHIVE_FATAL);
1969                 break;
1970         case TOC:
1971                 if (strcmp(name, "creation-time") == 0)
1972                         xar->xmlsts = TOC_CREATION_TIME;
1973                 else if (strcmp(name, "checksum") == 0)
1974                         xar->xmlsts = TOC_CHECKSUM;
1975                 else if (strcmp(name, "file") == 0) {
1976                         if (file_new(a, xar, list) != ARCHIVE_OK)
1977                                 return (ARCHIVE_FATAL);
1978                         xar->xmlsts = TOC_FILE;
1979                 }
1980                 else
1981                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1982                                 return (ARCHIVE_FATAL);
1983                 break;
1984         case TOC_CHECKSUM:
1985                 if (strcmp(name, "offset") == 0)
1986                         xar->xmlsts = TOC_CHECKSUM_OFFSET;
1987                 else if (strcmp(name, "size") == 0)
1988                         xar->xmlsts = TOC_CHECKSUM_SIZE;
1989                 else
1990                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1991                                 return (ARCHIVE_FATAL);
1992                 break;
1993         case TOC_FILE:
1994                 if (strcmp(name, "file") == 0) {
1995                         if (file_new(a, xar, list) != ARCHIVE_OK)
1996                                 return (ARCHIVE_FATAL);
1997                 }
1998                 else if (strcmp(name, "data") == 0)
1999                         xar->xmlsts = FILE_DATA;
2000                 else if (strcmp(name, "ea") == 0) {
2001                         if (xattr_new(a, xar, list) != ARCHIVE_OK)
2002                                 return (ARCHIVE_FATAL);
2003                         xar->xmlsts = FILE_EA;
2004                 }
2005                 else if (strcmp(name, "ctime") == 0)
2006                         xar->xmlsts = FILE_CTIME;
2007                 else if (strcmp(name, "mtime") == 0)
2008                         xar->xmlsts = FILE_MTIME;
2009                 else if (strcmp(name, "atime") == 0)
2010                         xar->xmlsts = FILE_ATIME;
2011                 else if (strcmp(name, "group") == 0)
2012                         xar->xmlsts = FILE_GROUP;
2013                 else if (strcmp(name, "gid") == 0)
2014                         xar->xmlsts = FILE_GID;
2015                 else if (strcmp(name, "user") == 0)
2016                         xar->xmlsts = FILE_USER;
2017                 else if (strcmp(name, "uid") == 0)
2018                         xar->xmlsts = FILE_UID;
2019                 else if (strcmp(name, "mode") == 0)
2020                         xar->xmlsts = FILE_MODE;
2021                 else if (strcmp(name, "device") == 0)
2022                         xar->xmlsts = FILE_DEVICE;
2023                 else if (strcmp(name, "deviceno") == 0)
2024                         xar->xmlsts = FILE_DEVICENO;
2025                 else if (strcmp(name, "inode") == 0)
2026                         xar->xmlsts = FILE_INODE;
2027                 else if (strcmp(name, "link") == 0)
2028                         xar->xmlsts = FILE_LINK;
2029                 else if (strcmp(name, "type") == 0) {
2030                         xar->xmlsts = FILE_TYPE;
2031                         for (attr = list->first; attr != NULL;
2032                             attr = attr->next) {
2033                                 if (strcmp(attr->name, "link") != 0)
2034                                         continue;
2035                                 if (strcmp(attr->value, "original") == 0) {
2036                                         xar->file->hdnext = xar->hdlink_orgs;
2037                                         xar->hdlink_orgs = xar->file;
2038                                 } else {
2039                                         xar->file->link = (unsigned)atol10(attr->value,
2040                                             strlen(attr->value));
2041                                         if (xar->file->link > 0)
2042                                                 if (add_link(a, xar, xar->file) != ARCHIVE_OK) {
2043                                                         return (ARCHIVE_FATAL);
2044                                                 };
2045                                 }
2046                         }
2047                 }
2048                 else if (strcmp(name, "name") == 0) {
2049                         xar->xmlsts = FILE_NAME;
2050                         for (attr = list->first; attr != NULL;
2051                             attr = attr->next) {
2052                                 if (strcmp(attr->name, "enctype") == 0 &&
2053                                     strcmp(attr->value, "base64") == 0)
2054                                         xar->base64text = 1;
2055                         }
2056                 }
2057                 else if (strcmp(name, "acl") == 0)
2058                         xar->xmlsts = FILE_ACL;
2059                 else if (strcmp(name, "flags") == 0)
2060                         xar->xmlsts = FILE_FLAGS;
2061                 else if (strcmp(name, "ext2") == 0)
2062                         xar->xmlsts = FILE_EXT2;
2063                 else
2064                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2065                                 return (ARCHIVE_FATAL);
2066                 break;
2067         case FILE_DATA:
2068                 if (strcmp(name, "length") == 0)
2069                         xar->xmlsts = FILE_DATA_LENGTH;
2070                 else if (strcmp(name, "offset") == 0)
2071                         xar->xmlsts = FILE_DATA_OFFSET;
2072                 else if (strcmp(name, "size") == 0)
2073                         xar->xmlsts = FILE_DATA_SIZE;
2074                 else if (strcmp(name, "encoding") == 0) {
2075                         xar->xmlsts = FILE_DATA_ENCODING;
2076                         xar->file->encoding = getencoding(list);
2077                 }
2078                 else if (strcmp(name, "archived-checksum") == 0) {
2079                         xar->xmlsts = FILE_DATA_A_CHECKSUM;
2080                         xar->file->a_sum.alg = getsumalgorithm(list);
2081                 }
2082                 else if (strcmp(name, "extracted-checksum") == 0) {
2083                         xar->xmlsts = FILE_DATA_E_CHECKSUM;
2084                         xar->file->e_sum.alg = getsumalgorithm(list);
2085                 }
2086                 else if (strcmp(name, "content") == 0)
2087                         xar->xmlsts = FILE_DATA_CONTENT;
2088                 else
2089                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2090                                 return (ARCHIVE_FATAL);
2091                 break;
2092         case FILE_DEVICE:
2093                 if (strcmp(name, "major") == 0)
2094                         xar->xmlsts = FILE_DEVICE_MAJOR;
2095                 else if (strcmp(name, "minor") == 0)
2096                         xar->xmlsts = FILE_DEVICE_MINOR;
2097                 else
2098                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2099                                 return (ARCHIVE_FATAL);
2100                 break;
2101         case FILE_DATA_CONTENT:
2102                 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2103                         return (ARCHIVE_FATAL);
2104                 break;
2105         case FILE_EA:
2106                 if (strcmp(name, "length") == 0)
2107                         xar->xmlsts = FILE_EA_LENGTH;
2108                 else if (strcmp(name, "offset") == 0)
2109                         xar->xmlsts = FILE_EA_OFFSET;
2110                 else if (strcmp(name, "size") == 0)
2111                         xar->xmlsts = FILE_EA_SIZE;
2112                 else if (strcmp(name, "encoding") == 0) {
2113                         xar->xmlsts = FILE_EA_ENCODING;
2114                         xar->xattr->encoding = getencoding(list);
2115                 } else if (strcmp(name, "archived-checksum") == 0)
2116                         xar->xmlsts = FILE_EA_A_CHECKSUM;
2117                 else if (strcmp(name, "extracted-checksum") == 0)
2118                         xar->xmlsts = FILE_EA_E_CHECKSUM;
2119                 else if (strcmp(name, "name") == 0)
2120                         xar->xmlsts = FILE_EA_NAME;
2121                 else if (strcmp(name, "fstype") == 0)
2122                         xar->xmlsts = FILE_EA_FSTYPE;
2123                 else
2124                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2125                                 return (ARCHIVE_FATAL);
2126                 break;
2127         case FILE_ACL:
2128                 if (strcmp(name, "appleextended") == 0)
2129                         xar->xmlsts = FILE_ACL_APPLEEXTENDED;
2130                 else if (strcmp(name, "default") == 0)
2131                         xar->xmlsts = FILE_ACL_DEFAULT;
2132                 else if (strcmp(name, "access") == 0)
2133                         xar->xmlsts = FILE_ACL_ACCESS;
2134                 else
2135                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2136                                 return (ARCHIVE_FATAL);
2137                 break;
2138         case FILE_FLAGS:
2139                 if (!xml_parse_file_flags(xar, name))
2140                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2141                                 return (ARCHIVE_FATAL);
2142                 break;
2143         case FILE_EXT2:
2144                 if (!xml_parse_file_ext2(xar, name))
2145                         if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2146                                 return (ARCHIVE_FATAL);
2147                 break;
2148         case TOC_CREATION_TIME:
2149         case TOC_CHECKSUM_OFFSET:
2150         case TOC_CHECKSUM_SIZE:
2151         case FILE_DATA_LENGTH:
2152         case FILE_DATA_OFFSET:
2153         case FILE_DATA_SIZE:
2154         case FILE_DATA_ENCODING:
2155         case FILE_DATA_A_CHECKSUM:
2156         case FILE_DATA_E_CHECKSUM:
2157         case FILE_EA_LENGTH:
2158         case FILE_EA_OFFSET:
2159         case FILE_EA_SIZE:
2160         case FILE_EA_ENCODING:
2161         case FILE_EA_A_CHECKSUM:
2162         case FILE_EA_E_CHECKSUM:
2163         case FILE_EA_NAME:
2164         case FILE_EA_FSTYPE:
2165         case FILE_CTIME:
2166         case FILE_MTIME:
2167         case FILE_ATIME:
2168         case FILE_GROUP:
2169         case FILE_GID:
2170         case FILE_USER:
2171         case FILE_UID:
2172         case FILE_INODE:
2173         case FILE_DEVICE_MAJOR:
2174         case FILE_DEVICE_MINOR:
2175         case FILE_DEVICENO:
2176         case FILE_MODE:
2177         case FILE_TYPE:
2178         case FILE_LINK:
2179         case FILE_NAME:
2180         case FILE_ACL_DEFAULT:
2181         case FILE_ACL_ACCESS:
2182         case FILE_ACL_APPLEEXTENDED:
2183         case FILE_FLAGS_USER_NODUMP:
2184         case FILE_FLAGS_USER_IMMUTABLE:
2185         case FILE_FLAGS_USER_APPEND:
2186         case FILE_FLAGS_USER_OPAQUE:
2187         case FILE_FLAGS_USER_NOUNLINK:
2188         case FILE_FLAGS_SYS_ARCHIVED:
2189         case FILE_FLAGS_SYS_IMMUTABLE:
2190         case FILE_FLAGS_SYS_APPEND:
2191         case FILE_FLAGS_SYS_NOUNLINK:
2192         case FILE_FLAGS_SYS_SNAPSHOT:
2193         case FILE_EXT2_SecureDeletion:
2194         case FILE_EXT2_Undelete:
2195         case FILE_EXT2_Compress:
2196         case FILE_EXT2_Synchronous:
2197         case FILE_EXT2_Immutable:
2198         case FILE_EXT2_AppendOnly:
2199         case FILE_EXT2_NoDump:
2200         case FILE_EXT2_NoAtime:
2201         case FILE_EXT2_CompDirty:
2202         case FILE_EXT2_CompBlock:
2203         case FILE_EXT2_NoCompBlock:
2204         case FILE_EXT2_CompError:
2205         case FILE_EXT2_BTree:
2206         case FILE_EXT2_HashIndexed:
2207         case FILE_EXT2_iMagic:
2208         case FILE_EXT2_Journaled:
2209         case FILE_EXT2_NoTail:
2210         case FILE_EXT2_DirSync:
2211         case FILE_EXT2_TopDir:
2212         case FILE_EXT2_Reserved:
2213         case UNKNOWN:
2214                 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2215                         return (ARCHIVE_FATAL);
2216                 break;
2217         }
2218         return (ARCHIVE_OK);
2219 }
2220
2221 static void
2222 xml_end(void *userData, const char *name)
2223 {
2224         struct archive_read *a;
2225         struct xar *xar;
2226
2227         a = (struct archive_read *)userData;
2228         xar = (struct xar *)(a->format->data);
2229
2230 #if DEBUG
2231         fprintf(stderr, "xml_end:[%s]\n", name);
2232 #endif
2233         switch (xar->xmlsts) {
2234         case INIT:
2235                 break;
2236         case XAR:
2237                 if (strcmp(name, "xar") == 0)
2238                         xar->xmlsts = INIT;
2239                 break;
2240         case TOC:
2241                 if (strcmp(name, "toc") == 0)
2242                         xar->xmlsts = XAR;
2243                 break;
2244         case TOC_CREATION_TIME:
2245                 if (strcmp(name, "creation-time") == 0)
2246                         xar->xmlsts = TOC;
2247                 break;
2248         case TOC_CHECKSUM:
2249                 if (strcmp(name, "checksum") == 0)
2250                         xar->xmlsts = TOC;
2251                 break;
2252         case TOC_CHECKSUM_OFFSET:
2253                 if (strcmp(name, "offset") == 0)
2254                         xar->xmlsts = TOC_CHECKSUM;
2255                 break;
2256         case TOC_CHECKSUM_SIZE:
2257                 if (strcmp(name, "size") == 0)
2258                         xar->xmlsts = TOC_CHECKSUM;
2259                 break;
2260         case TOC_FILE:
2261                 if (strcmp(name, "file") == 0) {
2262                         if (xar->file->parent != NULL &&
2263                             ((xar->file->mode & AE_IFMT) == AE_IFDIR))
2264                                 xar->file->parent->subdirs++;
2265                         xar->file = xar->file->parent;
2266                         if (xar->file == NULL)
2267                                 xar->xmlsts = TOC;
2268                 }
2269                 break;
2270         case FILE_DATA:
2271                 if (strcmp(name, "data") == 0)
2272                         xar->xmlsts = TOC_FILE;
2273                 break;
2274         case FILE_DATA_LENGTH:
2275                 if (strcmp(name, "length") == 0)
2276                         xar->xmlsts = FILE_DATA;
2277                 break;
2278         case FILE_DATA_OFFSET:
2279                 if (strcmp(name, "offset") == 0)
2280                         xar->xmlsts = FILE_DATA;
2281                 break;
2282         case FILE_DATA_SIZE:
2283                 if (strcmp(name, "size") == 0)
2284                         xar->xmlsts = FILE_DATA;
2285                 break;
2286         case FILE_DATA_ENCODING:
2287                 if (strcmp(name, "encoding") == 0)
2288                         xar->xmlsts = FILE_DATA;
2289                 break;
2290         case FILE_DATA_A_CHECKSUM:
2291                 if (strcmp(name, "archived-checksum") == 0)
2292                         xar->xmlsts = FILE_DATA;
2293                 break;
2294         case FILE_DATA_E_CHECKSUM:
2295                 if (strcmp(name, "extracted-checksum") == 0)
2296                         xar->xmlsts = FILE_DATA;
2297                 break;
2298         case FILE_DATA_CONTENT:
2299                 if (strcmp(name, "content") == 0)
2300                         xar->xmlsts = FILE_DATA;
2301                 break;
2302         case FILE_EA:
2303                 if (strcmp(name, "ea") == 0) {
2304                         xar->xmlsts = TOC_FILE;
2305                         xar->xattr = NULL;
2306                 }
2307                 break;
2308         case FILE_EA_LENGTH:
2309                 if (strcmp(name, "length") == 0)
2310                         xar->xmlsts = FILE_EA;
2311                 break;
2312         case FILE_EA_OFFSET:
2313                 if (strcmp(name, "offset") == 0)
2314                         xar->xmlsts = FILE_EA;
2315                 break;
2316         case FILE_EA_SIZE:
2317                 if (strcmp(name, "size") == 0)
2318                         xar->xmlsts = FILE_EA;
2319                 break;
2320         case FILE_EA_ENCODING:
2321                 if (strcmp(name, "encoding") == 0)
2322                         xar->xmlsts = FILE_EA;
2323                 break;
2324         case FILE_EA_A_CHECKSUM:
2325                 if (strcmp(name, "archived-checksum") == 0)
2326                         xar->xmlsts = FILE_EA;
2327                 break;
2328         case FILE_EA_E_CHECKSUM:
2329                 if (strcmp(name, "extracted-checksum") == 0)
2330                         xar->xmlsts = FILE_EA;
2331                 break;
2332         case FILE_EA_NAME:
2333                 if (strcmp(name, "name") == 0)
2334                         xar->xmlsts = FILE_EA;
2335                 break;
2336         case FILE_EA_FSTYPE:
2337                 if (strcmp(name, "fstype") == 0)
2338                         xar->xmlsts = FILE_EA;
2339                 break;
2340         case FILE_CTIME:
2341                 if (strcmp(name, "ctime") == 0)
2342                         xar->xmlsts = TOC_FILE;
2343                 break;
2344         case FILE_MTIME:
2345                 if (strcmp(name, "mtime") == 0)
2346                         xar->xmlsts = TOC_FILE;
2347                 break;
2348         case FILE_ATIME:
2349                 if (strcmp(name, "atime") == 0)
2350                         xar->xmlsts = TOC_FILE;
2351                 break;
2352         case FILE_GROUP:
2353                 if (strcmp(name, "group") == 0)
2354                         xar->xmlsts = TOC_FILE;
2355                 break;
2356         case FILE_GID:
2357                 if (strcmp(name, "gid") == 0)
2358                         xar->xmlsts = TOC_FILE;
2359                 break;
2360         case FILE_USER:
2361                 if (strcmp(name, "user") == 0)
2362                         xar->xmlsts = TOC_FILE;
2363                 break;
2364         case FILE_UID:
2365                 if (strcmp(name, "uid") == 0)
2366                         xar->xmlsts = TOC_FILE;
2367                 break;
2368         case FILE_MODE:
2369                 if (strcmp(name, "mode") == 0)
2370                         xar->xmlsts = TOC_FILE;
2371                 break;
2372         case FILE_DEVICE:
2373                 if (strcmp(name, "device") == 0)
2374                         xar->xmlsts = TOC_FILE;
2375                 break;
2376         case FILE_DEVICE_MAJOR:
2377                 if (strcmp(name, "major") == 0)
2378                         xar->xmlsts = FILE_DEVICE;
2379                 break;
2380         case FILE_DEVICE_MINOR:
2381                 if (strcmp(name, "minor") == 0)
2382                         xar->xmlsts = FILE_DEVICE;
2383                 break;
2384         case FILE_DEVICENO:
2385                 if (strcmp(name, "deviceno") == 0)
2386                         xar->xmlsts = TOC_FILE;
2387                 break;
2388         case FILE_INODE:
2389                 if (strcmp(name, "inode") == 0)
2390                         xar->xmlsts = TOC_FILE;
2391                 break;
2392         case FILE_LINK:
2393                 if (strcmp(name, "link") == 0)
2394                         xar->xmlsts = TOC_FILE;
2395                 break;
2396         case FILE_TYPE:
2397                 if (strcmp(name, "type") == 0)
2398                         xar->xmlsts = TOC_FILE;
2399                 break;
2400         case FILE_NAME:
2401                 if (strcmp(name, "name") == 0)
2402                         xar->xmlsts = TOC_FILE;
2403                 break;
2404         case FILE_ACL:
2405                 if (strcmp(name, "acl") == 0)
2406                         xar->xmlsts = TOC_FILE;
2407                 break;
2408         case FILE_ACL_DEFAULT:
2409                 if (strcmp(name, "default") == 0)
2410                         xar->xmlsts = FILE_ACL;
2411                 break;
2412         case FILE_ACL_ACCESS:
2413                 if (strcmp(name, "access") == 0)
2414                         xar->xmlsts = FILE_ACL;
2415                 break;
2416         case FILE_ACL_APPLEEXTENDED:
2417                 if (strcmp(name, "appleextended") == 0)
2418                         xar->xmlsts = FILE_ACL;
2419                 break;
2420         case FILE_FLAGS:
2421                 if (strcmp(name, "flags") == 0)
2422                         xar->xmlsts = TOC_FILE;
2423                 break;
2424         case FILE_FLAGS_USER_NODUMP:
2425                 if (strcmp(name, "UserNoDump") == 0)
2426                         xar->xmlsts = FILE_FLAGS;
2427                 break;
2428         case FILE_FLAGS_USER_IMMUTABLE:
2429                 if (strcmp(name, "UserImmutable") == 0)
2430                         xar->xmlsts = FILE_FLAGS;
2431                 break;
2432         case FILE_FLAGS_USER_APPEND:
2433                 if (strcmp(name, "UserAppend") == 0)
2434                         xar->xmlsts = FILE_FLAGS;
2435                 break;
2436         case FILE_FLAGS_USER_OPAQUE:
2437                 if (strcmp(name, "UserOpaque") == 0)
2438                         xar->xmlsts = FILE_FLAGS;
2439                 break;
2440         case FILE_FLAGS_USER_NOUNLINK:
2441                 if (strcmp(name, "UserNoUnlink") == 0)
2442                         xar->xmlsts = FILE_FLAGS;
2443                 break;
2444         case FILE_FLAGS_SYS_ARCHIVED:
2445                 if (strcmp(name, "SystemArchived") == 0)
2446                         xar->xmlsts = FILE_FLAGS;
2447                 break;
2448         case FILE_FLAGS_SYS_IMMUTABLE:
2449                 if (strcmp(name, "SystemImmutable") == 0)
2450                         xar->xmlsts = FILE_FLAGS;
2451                 break;
2452         case FILE_FLAGS_SYS_APPEND:
2453                 if (strcmp(name, "SystemAppend") == 0)
2454                         xar->xmlsts = FILE_FLAGS;
2455                 break;
2456         case FILE_FLAGS_SYS_NOUNLINK:
2457                 if (strcmp(name, "SystemNoUnlink") == 0)
2458                         xar->xmlsts = FILE_FLAGS;
2459                 break;
2460         case FILE_FLAGS_SYS_SNAPSHOT:
2461                 if (strcmp(name, "SystemSnapshot") == 0)
2462                         xar->xmlsts = FILE_FLAGS;
2463                 break;
2464         case FILE_EXT2:
2465                 if (strcmp(name, "ext2") == 0)
2466                         xar->xmlsts = TOC_FILE;
2467                 break;
2468         case FILE_EXT2_SecureDeletion:
2469                 if (strcmp(name, "SecureDeletion") == 0)
2470                         xar->xmlsts = FILE_EXT2;
2471                 break;
2472         case FILE_EXT2_Undelete:
2473                 if (strcmp(name, "Undelete") == 0)
2474                         xar->xmlsts = FILE_EXT2;
2475                 break;
2476         case FILE_EXT2_Compress:
2477                 if (strcmp(name, "Compress") == 0)
2478                         xar->xmlsts = FILE_EXT2;
2479                 break;
2480         case FILE_EXT2_Synchronous:
2481                 if (strcmp(name, "Synchronous") == 0)
2482                         xar->xmlsts = FILE_EXT2;
2483                 break;
2484         case FILE_EXT2_Immutable:
2485                 if (strcmp(name, "Immutable") == 0)
2486                         xar->xmlsts = FILE_EXT2;
2487                 break;
2488         case FILE_EXT2_AppendOnly:
2489                 if (strcmp(name, "AppendOnly") == 0)
2490                         xar->xmlsts = FILE_EXT2;
2491                 break;
2492         case FILE_EXT2_NoDump:
2493                 if (strcmp(name, "NoDump") == 0)
2494                         xar->xmlsts = FILE_EXT2;
2495                 break;
2496         case FILE_EXT2_NoAtime:
2497                 if (strcmp(name, "NoAtime") == 0)
2498                         xar->xmlsts = FILE_EXT2;
2499                 break;
2500         case FILE_EXT2_CompDirty:
2501                 if (strcmp(name, "CompDirty") == 0)
2502                         xar->xmlsts = FILE_EXT2;
2503                 break;
2504         case FILE_EXT2_CompBlock:
2505                 if (strcmp(name, "CompBlock") == 0)
2506                         xar->xmlsts = FILE_EXT2;
2507                 break;
2508         case FILE_EXT2_NoCompBlock:
2509                 if (strcmp(name, "NoCompBlock") == 0)
2510                         xar->xmlsts = FILE_EXT2;
2511                 break;
2512         case FILE_EXT2_CompError:
2513                 if (strcmp(name, "CompError") == 0)
2514                         xar->xmlsts = FILE_EXT2;
2515                 break;
2516         case FILE_EXT2_BTree:
2517                 if (strcmp(name, "BTree") == 0)
2518                         xar->xmlsts = FILE_EXT2;
2519                 break;
2520         case FILE_EXT2_HashIndexed:
2521                 if (strcmp(name, "HashIndexed") == 0)
2522                         xar->xmlsts = FILE_EXT2;
2523                 break;
2524         case FILE_EXT2_iMagic:
2525                 if (strcmp(name, "iMagic") == 0)
2526                         xar->xmlsts = FILE_EXT2;
2527                 break;
2528         case FILE_EXT2_Journaled:
2529                 if (strcmp(name, "Journaled") == 0)
2530                         xar->xmlsts = FILE_EXT2;
2531                 break;
2532         case FILE_EXT2_NoTail:
2533                 if (strcmp(name, "NoTail") == 0)
2534                         xar->xmlsts = FILE_EXT2;
2535                 break;
2536         case FILE_EXT2_DirSync:
2537                 if (strcmp(name, "DirSync") == 0)
2538                         xar->xmlsts = FILE_EXT2;
2539                 break;
2540         case FILE_EXT2_TopDir:
2541                 if (strcmp(name, "TopDir") == 0)
2542                         xar->xmlsts = FILE_EXT2;
2543                 break;
2544         case FILE_EXT2_Reserved:
2545                 if (strcmp(name, "Reserved") == 0)
2546                         xar->xmlsts = FILE_EXT2;
2547                 break;
2548         case UNKNOWN:
2549                 unknowntag_end(xar, name);
2550                 break;
2551         }
2552 }
2553
2554 static const int base64[256] = {
2555         -1, -1, -1, -1, -1, -1, -1, -1,
2556         -1, -1, -1, -1, -1, -1, -1, -1, /* 00 - 0F */
2557         -1, -1, -1, -1, -1, -1, -1, -1,
2558         -1, -1, -1, -1, -1, -1, -1, -1, /* 10 - 1F */
2559         -1, -1, -1, -1, -1, -1, -1, -1,
2560         -1, -1, -1, 62, -1, -1, -1, 63, /* 20 - 2F */
2561         52, 53, 54, 55, 56, 57, 58, 59,
2562         60, 61, -1, -1, -1, -1, -1, -1, /* 30 - 3F */
2563         -1,  0,  1,  2,  3,  4,  5,  6,
2564          7,  8,  9, 10, 11, 12, 13, 14, /* 40 - 4F */
2565         15, 16, 17, 18, 19, 20, 21, 22,
2566         23, 24, 25, -1, -1, -1, -1, -1, /* 50 - 5F */
2567         -1, 26, 27, 28, 29, 30, 31, 32,
2568         33, 34, 35, 36, 37, 38, 39, 40, /* 60 - 6F */
2569         41, 42, 43, 44, 45, 46, 47, 48,
2570         49, 50, 51, -1, -1, -1, -1, -1, /* 70 - 7F */
2571         -1, -1, -1, -1, -1, -1, -1, -1,
2572         -1, -1, -1, -1, -1, -1, -1, -1, /* 80 - 8F */
2573         -1, -1, -1, -1, -1, -1, -1, -1,
2574         -1, -1, -1, -1, -1, -1, -1, -1, /* 90 - 9F */
2575         -1, -1, -1, -1, -1, -1, -1, -1,
2576         -1, -1, -1, -1, -1, -1, -1, -1, /* A0 - AF */
2577         -1, -1, -1, -1, -1, -1, -1, -1,
2578         -1, -1, -1, -1, -1, -1, -1, -1, /* B0 - BF */
2579         -1, -1, -1, -1, -1, -1, -1, -1,
2580         -1, -1, -1, -1, -1, -1, -1, -1, /* C0 - CF */
2581         -1, -1, -1, -1, -1, -1, -1, -1,
2582         -1, -1, -1, -1, -1, -1, -1, -1, /* D0 - DF */
2583         -1, -1, -1, -1, -1, -1, -1, -1,
2584         -1, -1, -1, -1, -1, -1, -1, -1, /* E0 - EF */
2585         -1, -1, -1, -1, -1, -1, -1, -1,
2586         -1, -1, -1, -1, -1, -1, -1, -1, /* F0 - FF */
2587 };
2588
2589 static void
2590 strappend_base64(struct xar *xar,
2591     struct archive_string *as, const char *s, size_t l)
2592 {
2593         unsigned char buff[256];
2594         unsigned char *out;
2595         const unsigned char *b;
2596         size_t len;
2597
2598         (void)xar; /* UNUSED */
2599         len = 0;
2600         out = buff;
2601         b = (const unsigned char *)s;
2602         while (l > 0) {
2603                 int n = 0;
2604
2605                 if (l > 0) {
2606                         if (base64[b[0]] < 0 || base64[b[1]] < 0)
2607                                 break;
2608                         n = base64[*b++] << 18;
2609                         n |= base64[*b++] << 12;
2610                         *out++ = n >> 16;
2611                         len++;
2612                         l -= 2;
2613                 }
2614                 if (l > 0) {
2615                         if (base64[*b] < 0)
2616                                 break;
2617                         n |= base64[*b++] << 6;
2618                         *out++ = (n >> 8) & 0xFF;
2619                         len++;
2620                         --l;
2621                 }
2622                 if (l > 0) {
2623                         if (base64[*b] < 0)
2624                                 break;
2625                         n |= base64[*b++];
2626                         *out++ = n & 0xFF;
2627                         len++;
2628                         --l;
2629                 }
2630                 if (len+3 >= sizeof(buff)) {
2631                         archive_strncat(as, (const char *)buff, len);
2632                         len = 0;
2633                         out = buff;
2634                 }
2635         }
2636         if (len > 0)
2637                 archive_strncat(as, (const char *)buff, len);
2638 }
2639
2640 static int
2641 is_string(const char *known, const char *data, size_t len)
2642 {
2643         if (strlen(known) != len)
2644                 return -1;
2645         return memcmp(data, known, len);
2646 }
2647
2648 static void
2649 xml_data(void *userData, const char *s, int len)
2650 {
2651         struct archive_read *a;
2652         struct xar *xar;
2653
2654         a = (struct archive_read *)userData;
2655         xar = (struct xar *)(a->format->data);
2656
2657 #if DEBUG
2658         {
2659                 char buff[1024];
2660                 if (len > (int)(sizeof(buff)-1))
2661                         len = (int)(sizeof(buff)-1);
2662                 strncpy(buff, s, len);
2663                 buff[len] = 0;
2664                 fprintf(stderr, "\tlen=%d:\"%s\"\n", len, buff);
2665         }
2666 #endif
2667         switch (xar->xmlsts) {
2668         case TOC_CHECKSUM_OFFSET:
2669                 xar->toc_chksum_offset = atol10(s, len);
2670                 break;
2671         case TOC_CHECKSUM_SIZE:
2672                 xar->toc_chksum_size = atol10(s, len);
2673                 break;
2674         default:
2675                 break;
2676         }
2677         if (xar->file == NULL)
2678                 return;
2679
2680         switch (xar->xmlsts) {
2681         case FILE_NAME:
2682                 if (xar->file->parent != NULL) {
2683                         archive_string_concat(&(xar->file->pathname),
2684                             &(xar->file->parent->pathname));
2685                         archive_strappend_char(&(xar->file->pathname), '/');
2686                 }
2687                 xar->file->has |= HAS_PATHNAME;
2688                 if (xar->base64text) {
2689                         strappend_base64(xar,
2690                             &(xar->file->pathname), s, len);
2691                 } else
2692                         archive_strncat(&(xar->file->pathname), s, len);
2693                 break;
2694         case FILE_LINK:
2695                 xar->file->has |= HAS_SYMLINK;
2696                 archive_strncpy(&(xar->file->symlink), s, len);
2697                 break;
2698         case FILE_TYPE:
2699                 if (is_string("file", s, len) == 0 ||
2700                     is_string("hardlink", s, len) == 0)
2701                         xar->file->mode =
2702                             (xar->file->mode & ~AE_IFMT) | AE_IFREG;
2703                 if (is_string("directory", s, len) == 0)
2704                         xar->file->mode =
2705                             (xar->file->mode & ~AE_IFMT) | AE_IFDIR;
2706                 if (is_string("symlink", s, len) == 0)
2707                         xar->file->mode =
2708                             (xar->file->mode & ~AE_IFMT) | AE_IFLNK;
2709                 if (is_string("character special", s, len) == 0)
2710                         xar->file->mode =
2711                             (xar->file->mode & ~AE_IFMT) | AE_IFCHR;
2712                 if (is_string("block special", s, len) == 0)
2713                         xar->file->mode =
2714                             (xar->file->mode & ~AE_IFMT) | AE_IFBLK;
2715                 if (is_string("socket", s, len) == 0)
2716                         xar->file->mode =
2717                             (xar->file->mode & ~AE_IFMT) | AE_IFSOCK;
2718                 if (is_string("fifo", s, len) == 0)
2719                         xar->file->mode =
2720                             (xar->file->mode & ~AE_IFMT) | AE_IFIFO;
2721                 xar->file->has |= HAS_TYPE;
2722                 break;
2723         case FILE_INODE:
2724                 xar->file->has |= HAS_INO;
2725                 xar->file->ino64 = atol10(s, len);
2726                 break;
2727         case FILE_DEVICE_MAJOR:
2728                 xar->file->has |= HAS_DEVMAJOR;
2729                 xar->file->devmajor = (dev_t)atol10(s, len);
2730                 break;
2731         case FILE_DEVICE_MINOR:
2732                 xar->file->has |= HAS_DEVMINOR;
2733                 xar->file->devminor = (dev_t)atol10(s, len);
2734                 break;
2735         case FILE_DEVICENO:
2736                 xar->file->has |= HAS_DEV;
2737                 xar->file->dev = (dev_t)atol10(s, len);
2738                 break;
2739         case FILE_MODE:
2740                 xar->file->has |= HAS_MODE;
2741                 xar->file->mode =
2742                     (xar->file->mode & AE_IFMT) |
2743                     ((mode_t)(atol8(s, len)) & ~AE_IFMT);
2744                 break;
2745         case FILE_GROUP:
2746                 xar->file->has |= HAS_GID;
2747                 archive_strncpy(&(xar->file->gname), s, len);
2748                 break;
2749         case FILE_GID:
2750                 xar->file->has |= HAS_GID;
2751                 xar->file->gid = atol10(s, len);
2752                 break;
2753         case FILE_USER:
2754                 xar->file->has |= HAS_UID;
2755                 archive_strncpy(&(xar->file->uname), s, len);
2756                 break;
2757         case FILE_UID:
2758                 xar->file->has |= HAS_UID;
2759                 xar->file->uid = atol10(s, len);
2760                 break;
2761         case FILE_CTIME:
2762                 xar->file->has |= HAS_TIME | HAS_CTIME;
2763                 xar->file->ctime = parse_time(s, len);
2764                 break;
2765         case FILE_MTIME:
2766                 xar->file->has |= HAS_TIME | HAS_MTIME;
2767                 xar->file->mtime = parse_time(s, len);
2768                 break;
2769         case FILE_ATIME:
2770                 xar->file->has |= HAS_TIME | HAS_ATIME;
2771                 xar->file->atime = parse_time(s, len);
2772                 break;
2773         case FILE_DATA_LENGTH:
2774                 xar->file->has |= HAS_DATA;
2775                 xar->file->length = atol10(s, len);
2776                 break;
2777         case FILE_DATA_OFFSET:
2778                 xar->file->has |= HAS_DATA;
2779                 xar->file->offset = atol10(s, len);
2780                 break;
2781         case FILE_DATA_SIZE:
2782                 xar->file->has |= HAS_DATA;
2783                 xar->file->size = atol10(s, len);
2784                 break;
2785         case FILE_DATA_A_CHECKSUM:
2786                 xar->file->a_sum.len = atohex(xar->file->a_sum.val,
2787                     sizeof(xar->file->a_sum.val), s, len);
2788                 break;
2789         case FILE_DATA_E_CHECKSUM:
2790                 xar->file->e_sum.len = atohex(xar->file->e_sum.val,
2791                     sizeof(xar->file->e_sum.val), s, len);
2792                 break;
2793         case FILE_EA_LENGTH:
2794                 xar->file->has |= HAS_XATTR;
2795                 xar->xattr->length = atol10(s, len);
2796                 break;
2797         case FILE_EA_OFFSET:
2798                 xar->file->has |= HAS_XATTR;
2799                 xar->xattr->offset = atol10(s, len);
2800                 break;
2801         case FILE_EA_SIZE:
2802                 xar->file->has |= HAS_XATTR;
2803                 xar->xattr->size = atol10(s, len);
2804                 break;
2805         case FILE_EA_A_CHECKSUM:
2806                 xar->file->has |= HAS_XATTR;
2807                 xar->xattr->a_sum.len = atohex(xar->xattr->a_sum.val,
2808                     sizeof(xar->xattr->a_sum.val), s, len);
2809                 break;
2810         case FILE_EA_E_CHECKSUM:
2811                 xar->file->has |= HAS_XATTR;
2812                 xar->xattr->e_sum.len = atohex(xar->xattr->e_sum.val,
2813                     sizeof(xar->xattr->e_sum.val), s, len);
2814                 break;
2815         case FILE_EA_NAME:
2816                 xar->file->has |= HAS_XATTR;
2817                 archive_strncpy(&(xar->xattr->name), s, len);
2818                 break;
2819         case FILE_EA_FSTYPE:
2820                 xar->file->has |= HAS_XATTR;
2821                 archive_strncpy(&(xar->xattr->fstype), s, len);
2822                 break;
2823                 break;
2824         case FILE_ACL_DEFAULT:
2825         case FILE_ACL_ACCESS:
2826         case FILE_ACL_APPLEEXTENDED:
2827                 xar->file->has |= HAS_ACL;
2828                 /* TODO */
2829                 break;
2830         case INIT:
2831         case XAR:
2832         case TOC:
2833         case TOC_CREATION_TIME:
2834         case TOC_CHECKSUM:
2835         case TOC_CHECKSUM_OFFSET:
2836         case TOC_CHECKSUM_SIZE:
2837         case TOC_FILE:
2838         case FILE_DATA:
2839         case FILE_DATA_ENCODING:
2840         case FILE_DATA_CONTENT:
2841         case FILE_DEVICE:
2842         case FILE_EA:
2843         case FILE_EA_ENCODING:
2844         case FILE_ACL:
2845         case FILE_FLAGS:
2846         case FILE_FLAGS_USER_NODUMP:
2847         case FILE_FLAGS_USER_IMMUTABLE:
2848         case FILE_FLAGS_USER_APPEND:
2849         case FILE_FLAGS_USER_OPAQUE:
2850         case FILE_FLAGS_USER_NOUNLINK:
2851         case FILE_FLAGS_SYS_ARCHIVED:
2852         case FILE_FLAGS_SYS_IMMUTABLE:
2853         case FILE_FLAGS_SYS_APPEND:
2854         case FILE_FLAGS_SYS_NOUNLINK:
2855         case FILE_FLAGS_SYS_SNAPSHOT:
2856         case FILE_EXT2:
2857         case FILE_EXT2_SecureDeletion:
2858         case FILE_EXT2_Undelete:
2859         case FILE_EXT2_Compress:
2860         case FILE_EXT2_Synchronous:
2861         case FILE_EXT2_Immutable:
2862         case FILE_EXT2_AppendOnly:
2863         case FILE_EXT2_NoDump:
2864         case FILE_EXT2_NoAtime:
2865         case FILE_EXT2_CompDirty:
2866         case FILE_EXT2_CompBlock:
2867         case FILE_EXT2_NoCompBlock:
2868         case FILE_EXT2_CompError:
2869         case FILE_EXT2_BTree:
2870         case FILE_EXT2_HashIndexed:
2871         case FILE_EXT2_iMagic:
2872         case FILE_EXT2_Journaled:
2873         case FILE_EXT2_NoTail:
2874         case FILE_EXT2_DirSync:
2875         case FILE_EXT2_TopDir:
2876         case FILE_EXT2_Reserved:
2877         case UNKNOWN:
2878                 break;
2879         }
2880 }
2881
2882 /*
2883  * BSD file flags.
2884  */
2885 static int
2886 xml_parse_file_flags(struct xar *xar, const char *name)
2887 {
2888         const char *flag = NULL;
2889
2890         if (strcmp(name, "UserNoDump") == 0) {
2891                 xar->xmlsts = FILE_FLAGS_USER_NODUMP;
2892                 flag = "nodump";
2893         }
2894         else if (strcmp(name, "UserImmutable") == 0) {
2895                 xar->xmlsts = FILE_FLAGS_USER_IMMUTABLE;
2896                 flag = "uimmutable";
2897         }
2898         else if (strcmp(name, "UserAppend") == 0) {
2899                 xar->xmlsts = FILE_FLAGS_USER_APPEND;
2900                 flag = "uappend";
2901         }
2902         else if (strcmp(name, "UserOpaque") == 0) {
2903                 xar->xmlsts = FILE_FLAGS_USER_OPAQUE;
2904                 flag = "opaque";
2905         }
2906         else if (strcmp(name, "UserNoUnlink") == 0) {
2907                 xar->xmlsts = FILE_FLAGS_USER_NOUNLINK;
2908                 flag = "nouunlink";
2909         }
2910         else if (strcmp(name, "SystemArchived") == 0) {
2911                 xar->xmlsts = FILE_FLAGS_SYS_ARCHIVED;
2912                 flag = "archived";
2913         }
2914         else if (strcmp(name, "SystemImmutable") == 0) {
2915                 xar->xmlsts = FILE_FLAGS_SYS_IMMUTABLE;
2916                 flag = "simmutable";
2917         }
2918         else if (strcmp(name, "SystemAppend") == 0) {
2919                 xar->xmlsts = FILE_FLAGS_SYS_APPEND;
2920                 flag = "sappend";
2921         }
2922         else if (strcmp(name, "SystemNoUnlink") == 0) {
2923                 xar->xmlsts = FILE_FLAGS_SYS_NOUNLINK;
2924                 flag = "nosunlink";
2925         }
2926         else if (strcmp(name, "SystemSnapshot") == 0) {
2927                 xar->xmlsts = FILE_FLAGS_SYS_SNAPSHOT;
2928                 flag = "snapshot";
2929         }
2930
2931         if (flag == NULL)
2932                 return (0);
2933         xar->file->has |= HAS_FFLAGS;
2934         if (archive_strlen(&(xar->file->fflags_text)) > 0)
2935                 archive_strappend_char(&(xar->file->fflags_text), ',');
2936         archive_strcat(&(xar->file->fflags_text), flag);
2937         return (1);
2938 }
2939
2940 /*
2941  * Linux file flags.
2942  */
2943 static int
2944 xml_parse_file_ext2(struct xar *xar, const char *name)
2945 {
2946         const char *flag = NULL;
2947
2948         if (strcmp(name, "SecureDeletion") == 0) {
2949                 xar->xmlsts = FILE_EXT2_SecureDeletion;
2950                 flag = "securedeletion";
2951         }
2952         else if (strcmp(name, "Undelete") == 0) {
2953                 xar->xmlsts = FILE_EXT2_Undelete;
2954                 flag = "nouunlink";
2955         }
2956         else if (strcmp(name, "Compress") == 0) {
2957                 xar->xmlsts = FILE_EXT2_Compress;
2958                 flag = "compress";
2959         }
2960         else if (strcmp(name, "Synchronous") == 0) {
2961                 xar->xmlsts = FILE_EXT2_Synchronous;
2962                 flag = "sync";
2963         }
2964         else if (strcmp(name, "Immutable") == 0) {
2965                 xar->xmlsts = FILE_EXT2_Immutable;
2966                 flag = "simmutable";
2967         }
2968         else if (strcmp(name, "AppendOnly") == 0) {
2969                 xar->xmlsts = FILE_EXT2_AppendOnly;
2970                 flag = "sappend";
2971         }
2972         else if (strcmp(name, "NoDump") == 0) {
2973                 xar->xmlsts = FILE_EXT2_NoDump;
2974                 flag = "nodump";
2975         }
2976         else if (strcmp(name, "NoAtime") == 0) {
2977                 xar->xmlsts = FILE_EXT2_NoAtime;
2978                 flag = "noatime";
2979         }
2980         else if (strcmp(name, "CompDirty") == 0) {
2981                 xar->xmlsts = FILE_EXT2_CompDirty;
2982                 flag = "compdirty";
2983         }
2984         else if (strcmp(name, "CompBlock") == 0) {
2985                 xar->xmlsts = FILE_EXT2_CompBlock;
2986                 flag = "comprblk";
2987         }
2988         else if (strcmp(name, "NoCompBlock") == 0) {
2989                 xar->xmlsts = FILE_EXT2_NoCompBlock;
2990                 flag = "nocomprblk";
2991         }
2992         else if (strcmp(name, "CompError") == 0) {
2993                 xar->xmlsts = FILE_EXT2_CompError;
2994                 flag = "comperr";
2995         }
2996         else if (strcmp(name, "BTree") == 0) {
2997                 xar->xmlsts = FILE_EXT2_BTree;
2998                 flag = "btree";
2999         }
3000         else if (strcmp(name, "HashIndexed") == 0) {
3001                 xar->xmlsts = FILE_EXT2_HashIndexed;
3002                 flag = "hashidx";
3003         }
3004         else if (strcmp(name, "iMagic") == 0) {
3005                 xar->xmlsts = FILE_EXT2_iMagic;
3006                 flag = "imagic";
3007         }
3008         else if (strcmp(name, "Journaled") == 0) {
3009                 xar->xmlsts = FILE_EXT2_Journaled;
3010                 flag = "journal";
3011         }
3012         else if (strcmp(name, "NoTail") == 0) {
3013                 xar->xmlsts = FILE_EXT2_NoTail;
3014                 flag = "notail";
3015         }
3016         else if (strcmp(name, "DirSync") == 0) {
3017                 xar->xmlsts = FILE_EXT2_DirSync;
3018                 flag = "dirsync";
3019         }
3020         else if (strcmp(name, "TopDir") == 0) {
3021                 xar->xmlsts = FILE_EXT2_TopDir;
3022                 flag = "topdir";
3023         }
3024         else if (strcmp(name, "Reserved") == 0) {
3025                 xar->xmlsts = FILE_EXT2_Reserved;
3026                 flag = "reserved";
3027         }
3028
3029         if (flag == NULL)
3030                 return (0);
3031         if (archive_strlen(&(xar->file->fflags_text)) > 0)
3032                 archive_strappend_char(&(xar->file->fflags_text), ',');
3033         archive_strcat(&(xar->file->fflags_text), flag);
3034         return (1);
3035 }
3036
3037 #ifdef HAVE_LIBXML_XMLREADER_H
3038
3039 static int
3040 xml2_xmlattr_setup(struct archive_read *a,
3041     struct xmlattr_list *list, xmlTextReaderPtr reader)
3042 {
3043         struct xmlattr *attr;
3044         int r;
3045
3046         list->first = NULL;
3047         list->last = &(list->first);
3048         r = xmlTextReaderMoveToFirstAttribute(reader);
3049         while (r == 1) {
3050                 attr = malloc(sizeof*(attr));
3051                 if (attr == NULL) {
3052                         archive_set_error(&a->archive, ENOMEM, "Out of memory");
3053                         return (ARCHIVE_FATAL);
3054                 }
3055                 attr->name = strdup(
3056                     (const char *)xmlTextReaderConstLocalName(reader));
3057                 if (attr->name == NULL) {
3058                         free(attr);
3059                         archive_set_error(&a->archive, ENOMEM, "Out of memory");
3060                         return (ARCHIVE_FATAL);
3061                 }
3062                 attr->value = strdup(
3063                     (const char *)xmlTextReaderConstValue(reader));
3064                 if (attr->value == NULL) {
3065                         free(attr->name);
3066                         free(attr);
3067                         archive_set_error(&a->archive, ENOMEM, "Out of memory");
3068                         return (ARCHIVE_FATAL);
3069                 }
3070                 attr->next = NULL;
3071                 *list->last = attr;
3072                 list->last = &(attr->next);
3073                 r = xmlTextReaderMoveToNextAttribute(reader);
3074         }
3075         return (r);
3076 }
3077
3078 static int
3079 xml2_read_cb(void *context, char *buffer, int len)
3080 {
3081         struct archive_read *a;
3082         struct xar *xar;
3083         const void *d;
3084         size_t outbytes;
3085         size_t used = 0;
3086         int r;
3087
3088         a = (struct archive_read *)context;
3089         xar = (struct xar *)(a->format->data);
3090
3091         if (xar->toc_remaining <= 0)
3092                 return (0);
3093         d = buffer;
3094         outbytes = len;
3095         r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
3096         if (r != ARCHIVE_OK)
3097                 return (r);
3098         __archive_read_consume(a, used);
3099         xar->toc_remaining -= used;
3100         xar->offset += used;
3101         xar->toc_total += outbytes;
3102         PRINT_TOC(buffer, len);
3103
3104         return ((int)outbytes);
3105 }
3106
3107 static int
3108 xml2_close_cb(void *context)
3109 {
3110
3111         (void)context; /* UNUSED */
3112         return (0);
3113 }
3114
3115 static void
3116 xml2_error_hdr(void *arg, const char *msg, xmlParserSeverities severity,
3117     xmlTextReaderLocatorPtr locator)
3118 {
3119         struct archive_read *a;
3120
3121         (void)locator; /* UNUSED */
3122         a = (struct archive_read *)arg;
3123         switch (severity) {
3124         case XML_PARSER_SEVERITY_VALIDITY_WARNING:
3125         case XML_PARSER_SEVERITY_WARNING:
3126                 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3127                     "XML Parsing error: %s", msg);
3128                 break;
3129         case XML_PARSER_SEVERITY_VALIDITY_ERROR:
3130         case XML_PARSER_SEVERITY_ERROR:
3131                 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3132                     "XML Parsing error: %s", msg);
3133                 break;
3134         }
3135 }
3136
3137 static int
3138 xml2_read_toc(struct archive_read *a)
3139 {
3140         xmlTextReaderPtr reader;
3141         struct xmlattr_list list;
3142         int r;
3143
3144         reader = xmlReaderForIO(xml2_read_cb, xml2_close_cb, a, NULL, NULL, 0);
3145         if (reader == NULL) {
3146                 archive_set_error(&a->archive, ENOMEM,
3147                     "Couldn't allocate memory for xml parser");
3148                 return (ARCHIVE_FATAL);
3149         }
3150         xmlTextReaderSetErrorHandler(reader, xml2_error_hdr, a);
3151
3152         while ((r = xmlTextReaderRead(reader)) == 1) {
3153                 const char *name, *value;
3154                 int type, empty;
3155
3156                 type = xmlTextReaderNodeType(reader);
3157                 name = (const char *)xmlTextReaderConstLocalName(reader);
3158                 switch (type) {
3159                 case XML_READER_TYPE_ELEMENT:
3160                         empty = xmlTextReaderIsEmptyElement(reader);
3161                         r = xml2_xmlattr_setup(a, &list, reader);
3162                         if (r == ARCHIVE_OK)
3163                                 r = xml_start(a, name, &list);
3164                         xmlattr_cleanup(&list);
3165                         if (r != ARCHIVE_OK)
3166                                 return (r);
3167                         if (empty)
3168                                 xml_end(a, name);
3169                         break;
3170                 case XML_READER_TYPE_END_ELEMENT:
3171                         xml_end(a, name);
3172                         break;
3173                 case XML_READER_TYPE_TEXT:
3174                         value = (const char *)xmlTextReaderConstValue(reader);
3175                         xml_data(a, value, strlen(value));
3176                         break;
3177                 case XML_READER_TYPE_SIGNIFICANT_WHITESPACE:
3178                 default:
3179                         break;
3180                 }
3181                 if (r < 0)
3182                         break;
3183         }
3184         xmlFreeTextReader(reader);
3185         xmlCleanupParser();
3186
3187         return ((r == 0)?ARCHIVE_OK:ARCHIVE_FATAL);
3188 }
3189
3190 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
3191
3192 static int
3193 expat_xmlattr_setup(struct archive_read *a,
3194     struct xmlattr_list *list, const XML_Char **atts)
3195 {
3196         struct xmlattr *attr;
3197         char *name, *value;
3198
3199         list->first = NULL;
3200         list->last = &(list->first);
3201         if (atts == NULL)
3202                 return (ARCHIVE_OK);
3203         while (atts[0] != NULL && atts[1] != NULL) {
3204                 attr = malloc(sizeof*(attr));
3205                 name = strdup(atts[0]);
3206                 value = strdup(atts[1]);
3207                 if (attr == NULL || name == NULL || value == NULL) {
3208                         archive_set_error(&a->archive, ENOMEM, "Out of memory");
3209                         free(attr);
3210                         free(name);
3211                         free(value);
3212                         return (ARCHIVE_FATAL);
3213                 }
3214                 attr->name = name;
3215                 attr->value = value;
3216                 attr->next = NULL;
3217                 *list->last = attr;
3218                 list->last = &(attr->next);
3219                 atts += 2;
3220         }
3221         return (ARCHIVE_OK);
3222 }
3223
3224 static void
3225 expat_start_cb(void *userData, const XML_Char *name, const XML_Char **atts)
3226 {
3227         struct expat_userData *ud = (struct expat_userData *)userData;
3228         struct archive_read *a = ud->archive;
3229         struct xmlattr_list list;
3230         int r;
3231
3232         r = expat_xmlattr_setup(a, &list, atts);
3233         if (r == ARCHIVE_OK)
3234                 r = xml_start(a, (const char *)name, &list);
3235         xmlattr_cleanup(&list);
3236         ud->state = r;
3237 }
3238
3239 static void
3240 expat_end_cb(void *userData, const XML_Char *name)
3241 {
3242         struct expat_userData *ud = (struct expat_userData *)userData;
3243
3244         xml_end(ud->archive, (const char *)name);
3245 }
3246
3247 static void
3248 expat_data_cb(void *userData, const XML_Char *s, int len)
3249 {
3250         struct expat_userData *ud = (struct expat_userData *)userData;
3251
3252         xml_data(ud->archive, s, len);
3253 }
3254
3255 static int
3256 expat_read_toc(struct archive_read *a)
3257 {
3258         struct xar *xar;
3259         XML_Parser parser;
3260         struct expat_userData ud;
3261
3262         ud.state = ARCHIVE_OK;
3263         ud.archive = a;
3264
3265         xar = (struct xar *)(a->format->data);
3266
3267         /* Initialize XML Parser library. */
3268         parser = XML_ParserCreate(NULL);
3269         if (parser == NULL) {
3270                 archive_set_error(&a->archive, ENOMEM,
3271                     "Couldn't allocate memory for xml parser");
3272                 return (ARCHIVE_FATAL);
3273         }
3274         XML_SetUserData(parser, &ud);
3275         XML_SetElementHandler(parser, expat_start_cb, expat_end_cb);
3276         XML_SetCharacterDataHandler(parser, expat_data_cb);
3277         xar->xmlsts = INIT;
3278
3279         while (xar->toc_remaining && ud.state == ARCHIVE_OK) {
3280                 enum XML_Status xr;
3281                 const void *d;
3282                 size_t outbytes;
3283                 size_t used;
3284                 int r;
3285
3286                 d = NULL;
3287                 r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
3288                 if (r != ARCHIVE_OK)
3289                         return (r);
3290                 xar->toc_remaining -= used;
3291                 xar->offset += used;
3292                 xar->toc_total += outbytes;
3293                 PRINT_TOC(d, outbytes);
3294
3295                 xr = XML_Parse(parser, d, outbytes, xar->toc_remaining == 0);
3296                 __archive_read_consume(a, used);
3297                 if (xr == XML_STATUS_ERROR) {
3298                         XML_ParserFree(parser);
3299                         archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3300                             "XML Parsing failed");
3301                         return (ARCHIVE_FATAL);
3302                 }
3303         }
3304         XML_ParserFree(parser);
3305         return (ud.state);
3306 }
3307 #endif /* defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) */
3308
3309 #endif /* Support xar format */