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
27 #ifdef HAVE_ERRNO_H
28 #include <errno.h>
29 #endif
30 #ifdef HAVE_STDLIB_H
31 #include <stdlib.h>
32 #endif
33 #if HAVE_LIBXML_XMLREADER_H
34 #include <libxml/xmlreader.h>
35 #elif HAVE_BSDXML_H
36 #include <bsdxml.h>
37 #elif HAVE_EXPAT_H
38 #include <expat.h>
39 #endif
40 #ifdef HAVE_BZLIB_H
41 #include <bzlib.h>
42 #endif
43 #if HAVE_LZMA_H
44 #include <lzma.h>
45 #endif
46 #ifdef HAVE_ZLIB_H
47 #include <zlib.h>
48 #endif
49
50 #include "archive.h"
51 #include "archive_digest_private.h"
52 #include "archive_endian.h"
53 #include "archive_entry.h"
54 #include "archive_entry_locale.h"
55 #include "archive_private.h"
56 #include "archive_read_private.h"
57
58 #if (!defined(HAVE_LIBXML_XMLREADER_H) && \
59 !defined(HAVE_BSDXML_H) && !defined(HAVE_EXPAT_H)) ||\
60 !defined(HAVE_ZLIB_H) || \
61 !defined(ARCHIVE_HAS_MD5) || !defined(ARCHIVE_HAS_SHA1)
62 /*
63 * xar needs several external libraries.
64 * o libxml2 or expat --- XML parser
65 * o openssl or MD5/SHA1 hash function
66 * o zlib
67 * o bzlib2 (option)
68 * o liblzma (option)
69 */
70 int
archive_read_support_format_xar(struct archive * _a)71 archive_read_support_format_xar(struct archive *_a)
72 {
73 struct archive_read *a = (struct archive_read *)_a;
74 archive_check_magic(_a, ARCHIVE_READ_MAGIC,
75 ARCHIVE_STATE_NEW, "archive_read_support_format_xar");
76
77 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
78 "Xar not supported on this platform");
79 return (ARCHIVE_WARN);
80 }
81
82 #else /* Support xar format */
83
84 /* #define DEBUG 1 */
85 /* #define DEBUG_PRINT_TOC 1 */
86 #if DEBUG_PRINT_TOC
87 #define PRINT_TOC(d, outbytes) do { \
88 unsigned char *x = (unsigned char *)(uintptr_t)d; \
89 unsigned char c = x[outbytes-1]; \
90 x[outbytes - 1] = 0; \
91 fprintf(stderr, "%s", x); \
92 fprintf(stderr, "%c", c); \
93 x[outbytes - 1] = c; \
94 } while (0)
95 #else
96 #define PRINT_TOC(d, outbytes)
97 #endif
98
99 #define HEADER_MAGIC 0x78617221
100 #define HEADER_SIZE 28
101 #define HEADER_VERSION 1
102 #define CKSUM_NONE 0
103 #define CKSUM_SHA1 1
104 #define CKSUM_MD5 2
105
106 #define MD5_SIZE 16
107 #define SHA1_SIZE 20
108 #define MAX_SUM_SIZE 20
109
110 enum enctype {
111 NONE,
112 GZIP,
113 BZIP2,
114 LZMA,
115 XZ,
116 };
117
118 struct chksumval {
119 int alg;
120 size_t len;
121 unsigned char val[MAX_SUM_SIZE];
122 };
123
124 struct chksumwork {
125 int alg;
126 #ifdef ARCHIVE_HAS_MD5
127 archive_md5_ctx md5ctx;
128 #endif
129 #ifdef ARCHIVE_HAS_SHA1
130 archive_sha1_ctx sha1ctx;
131 #endif
132 };
133
134 struct xattr {
135 struct xattr *next;
136 struct archive_string name;
137 uint64_t id;
138 uint64_t length;
139 uint64_t offset;
140 uint64_t size;
141 enum enctype encoding;
142 struct chksumval a_sum;
143 struct chksumval e_sum;
144 struct archive_string fstype;
145 };
146
147 struct xar_file {
148 struct xar_file *next;
149 struct xar_file *hdnext;
150 struct xar_file *parent;
151 int subdirs;
152
153 unsigned int has;
154 #define HAS_DATA 0x00001
155 #define HAS_PATHNAME 0x00002
156 #define HAS_SYMLINK 0x00004
157 #define HAS_TIME 0x00008
158 #define HAS_UID 0x00010
159 #define HAS_GID 0x00020
160 #define HAS_MODE 0x00040
161 #define HAS_TYPE 0x00080
162 #define HAS_DEV 0x00100
163 #define HAS_DEVMAJOR 0x00200
164 #define HAS_DEVMINOR 0x00400
165 #define HAS_INO 0x00800
166 #define HAS_FFLAGS 0x01000
167 #define HAS_XATTR 0x02000
168 #define HAS_ACL 0x04000
169 #define HAS_CTIME 0x08000
170 #define HAS_MTIME 0x10000
171 #define HAS_ATIME 0x20000
172
173 uint64_t id;
174 uint64_t length;
175 uint64_t offset;
176 uint64_t size;
177 enum enctype encoding;
178 struct chksumval a_sum;
179 struct chksumval e_sum;
180 struct archive_string pathname;
181 struct archive_string symlink;
182 time_t ctime;
183 time_t mtime;
184 time_t atime;
185 struct archive_string uname;
186 int64_t uid;
187 struct archive_string gname;
188 int64_t gid;
189 mode_t mode;
190 dev_t dev;
191 dev_t devmajor;
192 dev_t devminor;
193 int64_t ino64;
194 struct archive_string fflags_text;
195 unsigned int link;
196 unsigned int nlink;
197 struct archive_string hardlink;
198 struct xattr *xattr_list;
199 };
200
201 struct hdlink {
202 struct hdlink *next;
203
204 unsigned int id;
205 int cnt;
206 struct xar_file *files;
207 };
208
209 struct heap_queue {
210 struct xar_file **files;
211 int allocated;
212 int used;
213 };
214
215 enum xmlstatus {
216 INIT,
217 XAR,
218 TOC,
219 TOC_CREATION_TIME,
220 TOC_CHECKSUM,
221 TOC_CHECKSUM_OFFSET,
222 TOC_CHECKSUM_SIZE,
223 TOC_FILE,
224 FILE_DATA,
225 FILE_DATA_LENGTH,
226 FILE_DATA_OFFSET,
227 FILE_DATA_SIZE,
228 FILE_DATA_ENCODING,
229 FILE_DATA_A_CHECKSUM,
230 FILE_DATA_E_CHECKSUM,
231 FILE_DATA_CONTENT,
232 FILE_EA,
233 FILE_EA_LENGTH,
234 FILE_EA_OFFSET,
235 FILE_EA_SIZE,
236 FILE_EA_ENCODING,
237 FILE_EA_A_CHECKSUM,
238 FILE_EA_E_CHECKSUM,
239 FILE_EA_NAME,
240 FILE_EA_FSTYPE,
241 FILE_CTIME,
242 FILE_MTIME,
243 FILE_ATIME,
244 FILE_GROUP,
245 FILE_GID,
246 FILE_USER,
247 FILE_UID,
248 FILE_MODE,
249 FILE_DEVICE,
250 FILE_DEVICE_MAJOR,
251 FILE_DEVICE_MINOR,
252 FILE_DEVICENO,
253 FILE_INODE,
254 FILE_LINK,
255 FILE_TYPE,
256 FILE_NAME,
257 FILE_ACL,
258 FILE_ACL_DEFAULT,
259 FILE_ACL_ACCESS,
260 FILE_ACL_APPLEEXTENDED,
261 /* BSD file flags. */
262 FILE_FLAGS,
263 FILE_FLAGS_USER_NODUMP,
264 FILE_FLAGS_USER_IMMUTABLE,
265 FILE_FLAGS_USER_APPEND,
266 FILE_FLAGS_USER_OPAQUE,
267 FILE_FLAGS_USER_NOUNLINK,
268 FILE_FLAGS_SYS_ARCHIVED,
269 FILE_FLAGS_SYS_IMMUTABLE,
270 FILE_FLAGS_SYS_APPEND,
271 FILE_FLAGS_SYS_NOUNLINK,
272 FILE_FLAGS_SYS_SNAPSHOT,
273 /* Linux file flags. */
274 FILE_EXT2,
275 FILE_EXT2_SecureDeletion,
276 FILE_EXT2_Undelete,
277 FILE_EXT2_Compress,
278 FILE_EXT2_Synchronous,
279 FILE_EXT2_Immutable,
280 FILE_EXT2_AppendOnly,
281 FILE_EXT2_NoDump,
282 FILE_EXT2_NoAtime,
283 FILE_EXT2_CompDirty,
284 FILE_EXT2_CompBlock,
285 FILE_EXT2_NoCompBlock,
286 FILE_EXT2_CompError,
287 FILE_EXT2_BTree,
288 FILE_EXT2_HashIndexed,
289 FILE_EXT2_iMagic,
290 FILE_EXT2_Journaled,
291 FILE_EXT2_NoTail,
292 FILE_EXT2_DirSync,
293 FILE_EXT2_TopDir,
294 FILE_EXT2_Reserved,
295 UNKNOWN,
296 };
297
298 struct unknown_tag {
299 struct unknown_tag *next;
300 struct archive_string name;
301 };
302
303 struct xar {
304 uint64_t offset; /* Current position in the file. */
305 int64_t total;
306 uint64_t h_base;
307 int end_of_file;
308 #define OUTBUFF_SIZE (1024 * 64)
309 unsigned char *outbuff;
310
311 enum xmlstatus xmlsts;
312 enum xmlstatus xmlsts_unknown;
313 struct unknown_tag *unknowntags;
314 int base64text;
315
316 /*
317 * TOC
318 */
319 uint64_t toc_remaining;
320 uint64_t toc_total;
321 uint64_t toc_chksum_offset;
322 uint64_t toc_chksum_size;
323
324 /*
325 * For Decoding data.
326 */
327 enum enctype rd_encoding;
328 z_stream stream;
329 int stream_valid;
330 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
331 bz_stream bzstream;
332 int bzstream_valid;
333 #endif
334 #if HAVE_LZMA_H && HAVE_LIBLZMA
335 lzma_stream lzstream;
336 int lzstream_valid;
337 #endif
338 /*
339 * For Checksum data.
340 */
341 struct chksumwork a_sumwrk;
342 struct chksumwork e_sumwrk;
343
344 struct xar_file *file; /* current reading file. */
345 struct xattr *xattr; /* current reading extended attribute. */
346 struct heap_queue file_queue;
347 struct xar_file *hdlink_orgs;
348 struct hdlink *hdlink_list;
349
350 int entry_init;
351 uint64_t entry_total;
352 uint64_t entry_remaining;
353 size_t entry_unconsumed;
354 uint64_t entry_size;
355 enum enctype entry_encoding;
356 struct chksumval entry_a_sum;
357 struct chksumval entry_e_sum;
358
359 struct archive_string_conv *sconv;
360 };
361
362 struct xmlattr {
363 struct xmlattr *next;
364 char *name;
365 char *value;
366 };
367
368 struct xmlattr_list {
369 struct xmlattr *first;
370 struct xmlattr **last;
371 };
372
373 static int xar_bid(struct archive_read *, int);
374 static int xar_read_header(struct archive_read *,
375 struct archive_entry *);
376 static int xar_read_data(struct archive_read *,
377 const void **, size_t *, int64_t *);
378 static int xar_read_data_skip(struct archive_read *);
379 static int xar_cleanup(struct archive_read *);
380 static int move_reading_point(struct archive_read *, uint64_t);
381 static int rd_contents_init(struct archive_read *,
382 enum enctype, int, int);
383 static int rd_contents(struct archive_read *, const void **,
384 size_t *, size_t *, uint64_t);
385 static uint64_t atol10(const char *, size_t);
386 static int64_t atol8(const char *, size_t);
387 static size_t atohex(unsigned char *, size_t, const char *, size_t);
388 static time_t parse_time(const char *p, size_t n);
389 static int heap_add_entry(struct archive_read *a,
390 struct heap_queue *, struct xar_file *);
391 static struct xar_file *heap_get_entry(struct heap_queue *);
392 static int add_link(struct archive_read *,
393 struct xar *, struct xar_file *);
394 static void checksum_init(struct archive_read *, int, int);
395 static void checksum_update(struct archive_read *, const void *,
396 size_t, const void *, size_t);
397 static int checksum_final(struct archive_read *, const void *,
398 size_t, const void *, size_t);
399 static void checksum_cleanup(struct archive_read *);
400 static int decompression_init(struct archive_read *, enum enctype);
401 static int decompress(struct archive_read *, const void **,
402 size_t *, const void *, size_t *);
403 static int decompression_cleanup(struct archive_read *);
404 static void xmlattr_cleanup(struct xmlattr_list *);
405 static int file_new(struct archive_read *,
406 struct xar *, struct xmlattr_list *);
407 static void file_free(struct xar_file *);
408 static int xattr_new(struct archive_read *,
409 struct xar *, struct xmlattr_list *);
410 static void xattr_free(struct xattr *);
411 static int getencoding(struct xmlattr_list *);
412 static int getsumalgorithm(struct xmlattr_list *);
413 static int unknowntag_start(struct archive_read *,
414 struct xar *, const char *);
415 static void unknowntag_end(struct xar *, const char *);
416 static int xml_start(struct archive_read *,
417 const char *, struct xmlattr_list *);
418 static void xml_end(void *, const char *);
419 static void xml_data(void *, const char *, size_t);
420 static int xml_parse_file_flags(struct xar *, const char *);
421 static int xml_parse_file_ext2(struct xar *, const char *);
422 #if defined(HAVE_LIBXML_XMLREADER_H)
423 static int xml2_xmlattr_setup(struct archive_read *,
424 struct xmlattr_list *, xmlTextReaderPtr);
425 static int xml2_read_cb(void *, char *, int);
426 static int xml2_close_cb(void *);
427 static void xml2_error_hdr(void *, const char *, xmlParserSeverities,
428 xmlTextReaderLocatorPtr);
429 static int xml2_read_toc(struct archive_read *);
430 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
431 struct expat_userData {
432 int state;
433 struct archive_read *archive;
434 };
435 static int expat_xmlattr_setup(struct archive_read *,
436 struct xmlattr_list *, const XML_Char **);
437 static void expat_start_cb(void *, const XML_Char *, const XML_Char **);
438 static void expat_end_cb(void *, const XML_Char *);
439 static void expat_data_cb(void *, const XML_Char *, int);
440 static int expat_read_toc(struct archive_read *);
441 #endif
442
443 int
archive_read_support_format_xar(struct archive * _a)444 archive_read_support_format_xar(struct archive *_a)
445 {
446 struct xar *xar;
447 struct archive_read *a = (struct archive_read *)_a;
448 int r;
449
450 archive_check_magic(_a, ARCHIVE_READ_MAGIC,
451 ARCHIVE_STATE_NEW, "archive_read_support_format_xar");
452
453 xar = calloc(1, sizeof(*xar));
454 if (xar == NULL) {
455 archive_set_error(&a->archive, ENOMEM,
456 "Can't allocate xar data");
457 return (ARCHIVE_FATAL);
458 }
459
460 /* initialize xar->file_queue */
461 xar->file_queue.allocated = 0;
462 xar->file_queue.used = 0;
463 xar->file_queue.files = NULL;
464
465 r = __archive_read_register_format(a,
466 xar,
467 "xar",
468 xar_bid,
469 NULL,
470 xar_read_header,
471 xar_read_data,
472 xar_read_data_skip,
473 NULL,
474 xar_cleanup,
475 NULL,
476 NULL);
477 if (r != ARCHIVE_OK)
478 free(xar);
479 return (r);
480 }
481
482 static int
xar_bid(struct archive_read * a,int best_bid)483 xar_bid(struct archive_read *a, int best_bid)
484 {
485 const unsigned char *b;
486 int bid;
487
488 (void)best_bid; /* UNUSED */
489
490 b = __archive_read_ahead(a, HEADER_SIZE, NULL);
491 if (b == NULL)
492 return (-1);
493
494 bid = 0;
495 /*
496 * Verify magic code
497 */
498 if (archive_be32dec(b) != HEADER_MAGIC)
499 return (0);
500 bid += 32;
501 /*
502 * Verify header size
503 */
504 if (archive_be16dec(b+4) != HEADER_SIZE)
505 return (0);
506 bid += 16;
507 /*
508 * Verify header version
509 */
510 if (archive_be16dec(b+6) != HEADER_VERSION)
511 return (0);
512 bid += 16;
513 /*
514 * Verify type of checksum
515 */
516 switch (archive_be32dec(b+24)) {
517 case CKSUM_NONE:
518 case CKSUM_SHA1:
519 case CKSUM_MD5:
520 bid += 32;
521 break;
522 default:
523 return (0);
524 }
525
526 return (bid);
527 }
528
529 static int
read_toc(struct archive_read * a)530 read_toc(struct archive_read *a)
531 {
532 struct xar *xar;
533 struct xar_file *file;
534 const unsigned char *b;
535 uint64_t toc_compressed_size;
536 uint64_t toc_uncompressed_size;
537 uint32_t toc_chksum_alg;
538 ssize_t bytes;
539 int r;
540
541 xar = (struct xar *)(a->format->data);
542
543 /*
544 * Read xar header.
545 */
546 b = __archive_read_ahead(a, HEADER_SIZE, &bytes);
547 if (bytes < 0)
548 return ((int)bytes);
549 if (bytes < HEADER_SIZE) {
550 archive_set_error(&a->archive,
551 ARCHIVE_ERRNO_FILE_FORMAT,
552 "Truncated archive header");
553 return (ARCHIVE_FATAL);
554 }
555
556 if (archive_be32dec(b) != HEADER_MAGIC) {
557 archive_set_error(&a->archive,
558 ARCHIVE_ERRNO_FILE_FORMAT,
559 "Invalid header magic");
560 return (ARCHIVE_FATAL);
561 }
562 if (archive_be16dec(b+6) != HEADER_VERSION) {
563 archive_set_error(&a->archive,
564 ARCHIVE_ERRNO_FILE_FORMAT,
565 "Unsupported header version(%d)",
566 archive_be16dec(b+6));
567 return (ARCHIVE_FATAL);
568 }
569 toc_compressed_size = archive_be64dec(b+8);
570 xar->toc_remaining = toc_compressed_size;
571 toc_uncompressed_size = archive_be64dec(b+16);
572 toc_chksum_alg = archive_be32dec(b+24);
573 __archive_read_consume(a, HEADER_SIZE);
574 xar->offset += HEADER_SIZE;
575 xar->toc_total = 0;
576
577 /*
578 * Read TOC(Table of Contents).
579 */
580 /* Initialize reading contents. */
581 r = move_reading_point(a, HEADER_SIZE);
582 if (r != ARCHIVE_OK)
583 return (r);
584 r = rd_contents_init(a, GZIP, toc_chksum_alg, CKSUM_NONE);
585 if (r != ARCHIVE_OK)
586 return (r);
587
588 #ifdef HAVE_LIBXML_XMLREADER_H
589 r = xml2_read_toc(a);
590 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
591 r = expat_read_toc(a);
592 #endif
593 if (r != ARCHIVE_OK)
594 return (r);
595
596 /* Set 'The HEAP' base. */
597 xar->h_base = xar->offset;
598 if (xar->toc_total != toc_uncompressed_size) {
599 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
600 "TOC uncompressed size error");
601 return (ARCHIVE_FATAL);
602 }
603
604 /*
605 * Checksum TOC
606 */
607 if (toc_chksum_alg != CKSUM_NONE) {
608 r = move_reading_point(a, xar->toc_chksum_offset);
609 if (r != ARCHIVE_OK)
610 return (r);
611 b = __archive_read_ahead(a,
612 (size_t)xar->toc_chksum_size, &bytes);
613 if (bytes < 0)
614 return ((int)bytes);
615 if ((uint64_t)bytes < xar->toc_chksum_size) {
616 archive_set_error(&a->archive,
617 ARCHIVE_ERRNO_FILE_FORMAT,
618 "Truncated archive file");
619 return (ARCHIVE_FATAL);
620 }
621 r = checksum_final(a, b,
622 (size_t)xar->toc_chksum_size, NULL, 0);
623 __archive_read_consume(a, xar->toc_chksum_size);
624 xar->offset += xar->toc_chksum_size;
625 #ifndef DONT_FAIL_ON_CRC_ERROR
626 if (r != ARCHIVE_OK)
627 return (ARCHIVE_FATAL);
628 #endif
629 }
630
631 /*
632 * Connect hardlinked files.
633 */
634 for (file = xar->hdlink_orgs; file != NULL; file = file->hdnext) {
635 struct hdlink **hdlink;
636
637 for (hdlink = &(xar->hdlink_list); *hdlink != NULL;
638 hdlink = &((*hdlink)->next)) {
639 if ((*hdlink)->id == file->id) {
640 struct hdlink *hltmp;
641 struct xar_file *f2;
642 int nlink = (*hdlink)->cnt + 1;
643
644 file->nlink = nlink;
645 for (f2 = (*hdlink)->files; f2 != NULL;
646 f2 = f2->hdnext) {
647 f2->nlink = nlink;
648 archive_string_copy(
649 &(f2->hardlink), &(file->pathname));
650 }
651 /* Remove resolved files from hdlist_list. */
652 hltmp = *hdlink;
653 *hdlink = hltmp->next;
654 free(hltmp);
655 break;
656 }
657 }
658 }
659 a->archive.archive_format = ARCHIVE_FORMAT_XAR;
660 a->archive.archive_format_name = "xar";
661
662 return (ARCHIVE_OK);
663 }
664
665 static int
xar_read_header(struct archive_read * a,struct archive_entry * entry)666 xar_read_header(struct archive_read *a, struct archive_entry *entry)
667 {
668 struct xar *xar;
669 struct xar_file *file;
670 struct xattr *xattr;
671 int r;
672
673 xar = (struct xar *)(a->format->data);
674 r = ARCHIVE_OK;
675
676 if (xar->offset == 0) {
677 /* Create a character conversion object. */
678 if (xar->sconv == NULL) {
679 xar->sconv = archive_string_conversion_from_charset(
680 &(a->archive), "UTF-8", 1);
681 if (xar->sconv == NULL)
682 return (ARCHIVE_FATAL);
683 }
684
685 /* Read TOC. */
686 r = read_toc(a);
687 if (r != ARCHIVE_OK)
688 return (r);
689 }
690
691 for (;;) {
692 file = xar->file = heap_get_entry(&(xar->file_queue));
693 if (file == NULL) {
694 xar->end_of_file = 1;
695 return (ARCHIVE_EOF);
696 }
697 if ((file->mode & AE_IFMT) != AE_IFDIR)
698 break;
699 if (file->has != (HAS_PATHNAME | HAS_TYPE))
700 break;
701 /*
702 * If a file type is a directory and it does not have
703 * any metadata, do not export.
704 */
705 file_free(file);
706 }
707 if (file->has & HAS_ATIME) {
708 archive_entry_set_atime(entry, file->atime, 0);
709 }
710 if (file->has & HAS_CTIME) {
711 archive_entry_set_ctime(entry, file->ctime, 0);
712 }
713 if (file->has & HAS_MTIME) {
714 archive_entry_set_mtime(entry, file->mtime, 0);
715 }
716 archive_entry_set_gid(entry, file->gid);
717 if (file->gname.length > 0 &&
718 archive_entry_copy_gname_l(entry, file->gname.s,
719 archive_strlen(&(file->gname)), xar->sconv) != 0) {
720 if (errno == ENOMEM) {
721 archive_set_error(&a->archive, ENOMEM,
722 "Can't allocate memory for Gname");
723 return (ARCHIVE_FATAL);
724 }
725 archive_set_error(&a->archive,
726 ARCHIVE_ERRNO_FILE_FORMAT,
727 "Gname cannot be converted from %s to current locale.",
728 archive_string_conversion_charset_name(xar->sconv));
729 r = ARCHIVE_WARN;
730 }
731 archive_entry_set_uid(entry, file->uid);
732 if (file->uname.length > 0 &&
733 archive_entry_copy_uname_l(entry, file->uname.s,
734 archive_strlen(&(file->uname)), xar->sconv) != 0) {
735 if (errno == ENOMEM) {
736 archive_set_error(&a->archive, ENOMEM,
737 "Can't allocate memory for Uname");
738 return (ARCHIVE_FATAL);
739 }
740 archive_set_error(&a->archive,
741 ARCHIVE_ERRNO_FILE_FORMAT,
742 "Uname cannot be converted from %s to current locale.",
743 archive_string_conversion_charset_name(xar->sconv));
744 r = ARCHIVE_WARN;
745 }
746 archive_entry_set_mode(entry, file->mode);
747 if (archive_entry_copy_pathname_l(entry, file->pathname.s,
748 archive_strlen(&(file->pathname)), xar->sconv) != 0) {
749 if (errno == ENOMEM) {
750 archive_set_error(&a->archive, ENOMEM,
751 "Can't allocate memory for Pathname");
752 return (ARCHIVE_FATAL);
753 }
754 archive_set_error(&a->archive,
755 ARCHIVE_ERRNO_FILE_FORMAT,
756 "Pathname cannot be converted from %s to current locale.",
757 archive_string_conversion_charset_name(xar->sconv));
758 r = ARCHIVE_WARN;
759 }
760
761
762 if (file->symlink.length > 0 &&
763 archive_entry_copy_symlink_l(entry, file->symlink.s,
764 archive_strlen(&(file->symlink)), xar->sconv) != 0) {
765 if (errno == ENOMEM) {
766 archive_set_error(&a->archive, ENOMEM,
767 "Can't allocate memory for Linkname");
768 return (ARCHIVE_FATAL);
769 }
770 archive_set_error(&a->archive,
771 ARCHIVE_ERRNO_FILE_FORMAT,
772 "Linkname cannot be converted from %s to current locale.",
773 archive_string_conversion_charset_name(xar->sconv));
774 r = ARCHIVE_WARN;
775 }
776 /* Set proper nlink. */
777 if ((file->mode & AE_IFMT) == AE_IFDIR)
778 archive_entry_set_nlink(entry, file->subdirs + 2);
779 else
780 archive_entry_set_nlink(entry, file->nlink);
781 archive_entry_set_size(entry, file->size);
782 if (archive_strlen(&(file->hardlink)) > 0)
783 archive_entry_set_hardlink(entry, file->hardlink.s);
784 archive_entry_set_ino64(entry, file->ino64);
785 if (file->has & HAS_DEV)
786 archive_entry_set_dev(entry, file->dev);
787 if (file->has & HAS_DEVMAJOR)
788 archive_entry_set_devmajor(entry, file->devmajor);
789 if (file->has & HAS_DEVMINOR)
790 archive_entry_set_devminor(entry, file->devminor);
791 if (archive_strlen(&(file->fflags_text)) > 0)
792 archive_entry_copy_fflags_text(entry, file->fflags_text.s);
793
794 xar->entry_init = 1;
795 xar->entry_total = 0;
796 xar->entry_remaining = file->length;
797 xar->entry_size = file->size;
798 xar->entry_encoding = file->encoding;
799 xar->entry_a_sum = file->a_sum;
800 xar->entry_e_sum = file->e_sum;
801 /*
802 * Read extended attributes.
803 */
804 xattr = file->xattr_list;
805 while (xattr != NULL) {
806 const void *d;
807 size_t outbytes = 0;
808 size_t used = 0;
809
810 r = move_reading_point(a, xattr->offset);
811 if (r != ARCHIVE_OK)
812 break;
813 r = rd_contents_init(a, xattr->encoding,
814 xattr->a_sum.alg, xattr->e_sum.alg);
815 if (r != ARCHIVE_OK)
816 break;
817 d = NULL;
818 r = rd_contents(a, &d, &outbytes, &used, xattr->length);
819 if (r != ARCHIVE_OK)
820 break;
821 if (outbytes != xattr->size) {
822 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
823 "Decompressed size error");
824 r = ARCHIVE_FATAL;
825 break;
826 }
827 r = checksum_final(a,
828 xattr->a_sum.val, xattr->a_sum.len,
829 xattr->e_sum.val, xattr->e_sum.len);
830 if (r != ARCHIVE_OK) {
831 #ifndef DONT_FAIL_ON_CRC_ERROR
832 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
833 "Xattr checksum error");
834 r = ARCHIVE_WARN;
835 break;
836 #endif
837 }
838 if (xattr->name.s == NULL) {
839 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
840 "Xattr name error");
841 r = ARCHIVE_WARN;
842 break;
843 }
844 archive_entry_xattr_add_entry(entry,
845 xattr->name.s, d, outbytes);
846 xattr = xattr->next;
847 }
848 if (r != ARCHIVE_OK) {
849 file_free(file);
850 return (r);
851 }
852
853 if (xar->entry_remaining > 0)
854 /* Move reading point to the beginning of current
855 * file contents. */
856 r = move_reading_point(a, file->offset);
857 else
858 r = ARCHIVE_OK;
859
860 file_free(file);
861 return (r);
862 }
863
864 static int
xar_read_data(struct archive_read * a,const void ** buff,size_t * size,int64_t * offset)865 xar_read_data(struct archive_read *a,
866 const void **buff, size_t *size, int64_t *offset)
867 {
868 struct xar *xar;
869 size_t used = 0;
870 int r;
871
872 xar = (struct xar *)(a->format->data);
873
874 if (xar->entry_unconsumed) {
875 __archive_read_consume(a, xar->entry_unconsumed);
876 xar->entry_unconsumed = 0;
877 }
878
879 if (xar->end_of_file || xar->entry_remaining <= 0) {
880 r = ARCHIVE_EOF;
881 goto abort_read_data;
882 }
883
884 if (xar->entry_init) {
885 r = rd_contents_init(a, xar->entry_encoding,
886 xar->entry_a_sum.alg, xar->entry_e_sum.alg);
887 if (r != ARCHIVE_OK) {
888 xar->entry_remaining = 0;
889 return (r);
890 }
891 xar->entry_init = 0;
892 }
893
894 *buff = NULL;
895 r = rd_contents(a, buff, size, &used, xar->entry_remaining);
896 if (r != ARCHIVE_OK)
897 goto abort_read_data;
898
899 *offset = xar->entry_total;
900 xar->entry_total += *size;
901 xar->total += *size;
902 xar->offset += used;
903 xar->entry_remaining -= used;
904 xar->entry_unconsumed = used;
905
906 if (xar->entry_remaining == 0) {
907 if (xar->entry_total != xar->entry_size) {
908 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
909 "Decompressed size error");
910 r = ARCHIVE_FATAL;
911 goto abort_read_data;
912 }
913 r = checksum_final(a,
914 xar->entry_a_sum.val, xar->entry_a_sum.len,
915 xar->entry_e_sum.val, xar->entry_e_sum.len);
916 if (r != ARCHIVE_OK)
917 goto abort_read_data;
918 }
919
920 return (ARCHIVE_OK);
921 abort_read_data:
922 *buff = NULL;
923 *size = 0;
924 *offset = xar->total;
925 return (r);
926 }
927
928 static int
xar_read_data_skip(struct archive_read * a)929 xar_read_data_skip(struct archive_read *a)
930 {
931 struct xar *xar;
932 int64_t bytes_skipped;
933
934 xar = (struct xar *)(a->format->data);
935 if (xar->end_of_file)
936 return (ARCHIVE_EOF);
937 bytes_skipped = __archive_read_consume(a, xar->entry_remaining +
938 xar->entry_unconsumed);
939 if (bytes_skipped < 0)
940 return (ARCHIVE_FATAL);
941 xar->offset += bytes_skipped;
942 xar->entry_unconsumed = 0;
943 return (ARCHIVE_OK);
944 }
945
946 static int
xar_cleanup(struct archive_read * a)947 xar_cleanup(struct archive_read *a)
948 {
949 struct xar *xar;
950 struct hdlink *hdlink;
951 int i;
952 int r;
953
954 xar = (struct xar *)(a->format->data);
955 checksum_cleanup(a);
956 r = decompression_cleanup(a);
957 hdlink = xar->hdlink_list;
958 while (hdlink != NULL) {
959 struct hdlink *next = hdlink->next;
960
961 free(hdlink);
962 hdlink = next;
963 }
964 for (i = 0; i < xar->file_queue.used; i++)
965 file_free(xar->file_queue.files[i]);
966 free(xar->file_queue.files);
967 while (xar->unknowntags != NULL) {
968 struct unknown_tag *tag;
969
970 tag = xar->unknowntags;
971 xar->unknowntags = tag->next;
972 archive_string_free(&(tag->name));
973 free(tag);
974 }
975 free(xar->outbuff);
976 free(xar);
977 a->format->data = NULL;
978 return (r);
979 }
980
981 static int
move_reading_point(struct archive_read * a,uint64_t offset)982 move_reading_point(struct archive_read *a, uint64_t offset)
983 {
984 struct xar *xar;
985
986 xar = (struct xar *)(a->format->data);
987 if (xar->offset - xar->h_base != offset) {
988 /* Seek forward to the start of file contents. */
989 int64_t step;
990
991 step = offset - (xar->offset - xar->h_base);
992 if (step > 0) {
993 step = __archive_read_consume(a, step);
994 if (step < 0)
995 return ((int)step);
996 xar->offset += step;
997 } else {
998 int64_t pos = __archive_read_seek(a, xar->h_base + offset, SEEK_SET);
999 if (pos == ARCHIVE_FAILED) {
1000 archive_set_error(&(a->archive),
1001 ARCHIVE_ERRNO_MISC,
1002 "Cannot seek.");
1003 return (ARCHIVE_FAILED);
1004 }
1005 xar->offset = pos;
1006 }
1007 }
1008 return (ARCHIVE_OK);
1009 }
1010
1011 static int
rd_contents_init(struct archive_read * a,enum enctype encoding,int a_sum_alg,int e_sum_alg)1012 rd_contents_init(struct archive_read *a, enum enctype encoding,
1013 int a_sum_alg, int e_sum_alg)
1014 {
1015 int r;
1016
1017 /* Init decompress library. */
1018 if ((r = decompression_init(a, encoding)) != ARCHIVE_OK)
1019 return (r);
1020 /* Init checksum library. */
1021 checksum_init(a, a_sum_alg, e_sum_alg);
1022 return (ARCHIVE_OK);
1023 }
1024
1025 static int
rd_contents(struct archive_read * a,const void ** buff,size_t * size,size_t * used,uint64_t remaining)1026 rd_contents(struct archive_read *a, const void **buff, size_t *size,
1027 size_t *used, uint64_t remaining)
1028 {
1029 const unsigned char *b;
1030 ssize_t bytes;
1031
1032 /* Get whatever bytes are immediately available. */
1033 b = __archive_read_ahead(a, 1, &bytes);
1034 if (bytes < 0)
1035 return ((int)bytes);
1036 if (bytes == 0) {
1037 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1038 "Truncated archive file");
1039 return (ARCHIVE_FATAL);
1040 }
1041 if ((uint64_t)bytes > remaining)
1042 bytes = (ssize_t)remaining;
1043
1044 /*
1045 * Decompress contents of file.
1046 */
1047 *used = bytes;
1048 if (decompress(a, buff, size, b, used) != ARCHIVE_OK)
1049 return (ARCHIVE_FATAL);
1050
1051 /*
1052 * Update checksum of a compressed data and a extracted data.
1053 */
1054 checksum_update(a, b, *used, *buff, *size);
1055
1056 return (ARCHIVE_OK);
1057 }
1058
1059 /*
1060 * Note that this implementation does not (and should not!) obey
1061 * locale settings; you cannot simply substitute strtol here, since
1062 * it does obey locale.
1063 */
1064
1065 static uint64_t
atol10(const char * p,size_t char_cnt)1066 atol10(const char *p, size_t char_cnt)
1067 {
1068 uint64_t l;
1069 int digit;
1070
1071 if (char_cnt == 0)
1072 return (0);
1073
1074 l = 0;
1075 digit = *p - '0';
1076 while (digit >= 0 && digit < 10 && char_cnt-- > 0) {
1077 l = (l * 10) + digit;
1078 digit = *++p - '0';
1079 }
1080 return (l);
1081 }
1082
1083 static int64_t
atol8(const char * p,size_t char_cnt)1084 atol8(const char *p, size_t char_cnt)
1085 {
1086 int64_t l;
1087 int digit;
1088
1089 if (char_cnt == 0)
1090 return (0);
1091
1092 l = 0;
1093 while (char_cnt-- > 0) {
1094 if (*p >= '0' && *p <= '7')
1095 digit = *p - '0';
1096 else
1097 break;
1098 p++;
1099 l <<= 3;
1100 l |= digit;
1101 }
1102 return (l);
1103 }
1104
1105 static size_t
atohex(unsigned char * b,size_t bsize,const char * p,size_t psize)1106 atohex(unsigned char *b, size_t bsize, const char *p, size_t psize)
1107 {
1108 size_t fbsize = bsize;
1109
1110 while (bsize && psize > 1) {
1111 unsigned char x;
1112
1113 if (p[0] >= 'a' && p[0] <= 'z')
1114 x = (p[0] - 'a' + 0x0a) << 4;
1115 else if (p[0] >= 'A' && p[0] <= 'Z')
1116 x = (p[0] - 'A' + 0x0a) << 4;
1117 else if (p[0] >= '0' && p[0] <= '9')
1118 x = (p[0] - '0') << 4;
1119 else
1120 return (-1);
1121 if (p[1] >= 'a' && p[1] <= 'z')
1122 x |= p[1] - 'a' + 0x0a;
1123 else if (p[1] >= 'A' && p[1] <= 'Z')
1124 x |= p[1] - 'A' + 0x0a;
1125 else if (p[1] >= '0' && p[1] <= '9')
1126 x |= p[1] - '0';
1127 else
1128 return (-1);
1129
1130 *b++ = x;
1131 bsize--;
1132 p += 2;
1133 psize -= 2;
1134 }
1135 return (fbsize - bsize);
1136 }
1137
1138 static time_t
time_from_tm(struct tm * t)1139 time_from_tm(struct tm *t)
1140 {
1141 #if HAVE__MKGMTIME
1142 return _mkgmtime(t);
1143 #elif HAVE_TIMEGM
1144 /* Use platform timegm() if available. */
1145 return (timegm(t));
1146 #else
1147 /* Else use direct calculation using POSIX assumptions. */
1148 /* First, fix up tm_yday based on the year/month/day. */
1149 mktime(t);
1150 /* Then we can compute timegm() from first principles. */
1151 return (t->tm_sec
1152 + t->tm_min * 60
1153 + t->tm_hour * 3600
1154 + t->tm_yday * 86400
1155 + (t->tm_year - 70) * 31536000
1156 + ((t->tm_year - 69) / 4) * 86400
1157 - ((t->tm_year - 1) / 100) * 86400
1158 + ((t->tm_year + 299) / 400) * 86400);
1159 #endif
1160 }
1161
1162 static time_t
parse_time(const char * p,size_t n)1163 parse_time(const char *p, size_t n)
1164 {
1165 struct tm tm;
1166 time_t t = 0;
1167 int64_t data;
1168
1169 memset(&tm, 0, sizeof(tm));
1170 if (n != 20)
1171 return (t);
1172 data = atol10(p, 4);
1173 if (data < 1900)
1174 return (t);
1175 tm.tm_year = (int)data - 1900;
1176 p += 4;
1177 if (*p++ != '-')
1178 return (t);
1179 data = atol10(p, 2);
1180 if (data < 1 || data > 12)
1181 return (t);
1182 tm.tm_mon = (int)data -1;
1183 p += 2;
1184 if (*p++ != '-')
1185 return (t);
1186 data = atol10(p, 2);
1187 if (data < 1 || data > 31)
1188 return (t);
1189 tm.tm_mday = (int)data;
1190 p += 2;
1191 if (*p++ != 'T')
1192 return (t);
1193 data = atol10(p, 2);
1194 if (data < 0 || data > 23)
1195 return (t);
1196 tm.tm_hour = (int)data;
1197 p += 2;
1198 if (*p++ != ':')
1199 return (t);
1200 data = atol10(p, 2);
1201 if (data < 0 || data > 59)
1202 return (t);
1203 tm.tm_min = (int)data;
1204 p += 2;
1205 if (*p++ != ':')
1206 return (t);
1207 data = atol10(p, 2);
1208 if (data < 0 || data > 60)
1209 return (t);
1210 tm.tm_sec = (int)data;
1211 #if 0
1212 p += 2;
1213 if (*p != 'Z')
1214 return (t);
1215 #endif
1216
1217 t = time_from_tm(&tm);
1218
1219 return (t);
1220 }
1221
1222 static int
heap_add_entry(struct archive_read * a,struct heap_queue * heap,struct xar_file * file)1223 heap_add_entry(struct archive_read *a,
1224 struct heap_queue *heap, struct xar_file *file)
1225 {
1226 uint64_t file_id, parent_id;
1227 int hole, parent;
1228
1229 /* Expand our pending files list as necessary. */
1230 if (heap->used >= heap->allocated) {
1231 struct xar_file **new_pending_files;
1232 int new_size;
1233
1234 if (heap->allocated < 1024)
1235 new_size = 1024;
1236 else
1237 new_size = heap->allocated * 2;
1238 /* Overflow might keep us from growing the list. */
1239 if (new_size <= heap->allocated) {
1240 archive_set_error(&a->archive,
1241 ENOMEM, "Out of memory");
1242 return (ARCHIVE_FATAL);
1243 }
1244 new_pending_files = (struct xar_file **)
1245 calloc(new_size, sizeof(new_pending_files[0]));
1246 if (new_pending_files == NULL) {
1247 archive_set_error(&a->archive,
1248 ENOMEM, "Out of memory");
1249 return (ARCHIVE_FATAL);
1250 }
1251 if (heap->allocated) {
1252 memcpy(new_pending_files, heap->files,
1253 heap->allocated * sizeof(new_pending_files[0]));
1254 free(heap->files);
1255 }
1256 heap->files = new_pending_files;
1257 heap->allocated = new_size;
1258 }
1259
1260 file_id = file->id;
1261
1262 /*
1263 * Start with hole at end, walk it up tree to find insertion point.
1264 */
1265 hole = heap->used++;
1266 while (hole > 0) {
1267 parent = (hole - 1)/2;
1268 parent_id = heap->files[parent]->id;
1269 if (file_id >= parent_id) {
1270 heap->files[hole] = file;
1271 return (ARCHIVE_OK);
1272 }
1273 /* Move parent into hole <==> move hole up tree. */
1274 heap->files[hole] = heap->files[parent];
1275 hole = parent;
1276 }
1277 heap->files[0] = file;
1278
1279 return (ARCHIVE_OK);
1280 }
1281
1282 static struct xar_file *
heap_get_entry(struct heap_queue * heap)1283 heap_get_entry(struct heap_queue *heap)
1284 {
1285 uint64_t a_id, b_id, c_id;
1286 int a, b, c;
1287 struct xar_file *r, *tmp;
1288
1289 if (heap->used < 1)
1290 return (NULL);
1291
1292 /*
1293 * The first file in the list is the earliest; we'll return this.
1294 */
1295 r = heap->files[0];
1296
1297 /*
1298 * Move the last item in the heap to the root of the tree
1299 */
1300 heap->files[0] = heap->files[--(heap->used)];
1301
1302 /*
1303 * Rebalance the heap.
1304 */
1305 a = 0; /* Starting element and its heap key */
1306 a_id = heap->files[a]->id;
1307 for (;;) {
1308 b = a + a + 1; /* First child */
1309 if (b >= heap->used)
1310 return (r);
1311 b_id = heap->files[b]->id;
1312 c = b + 1; /* Use second child if it is smaller. */
1313 if (c < heap->used) {
1314 c_id = heap->files[c]->id;
1315 if (c_id < b_id) {
1316 b = c;
1317 b_id = c_id;
1318 }
1319 }
1320 if (a_id <= b_id)
1321 return (r);
1322 tmp = heap->files[a];
1323 heap->files[a] = heap->files[b];
1324 heap->files[b] = tmp;
1325 a = b;
1326 }
1327 }
1328
1329 static int
add_link(struct archive_read * a,struct xar * xar,struct xar_file * file)1330 add_link(struct archive_read *a, struct xar *xar, struct xar_file *file)
1331 {
1332 struct hdlink *hdlink;
1333
1334 for (hdlink = xar->hdlink_list; hdlink != NULL; hdlink = hdlink->next) {
1335 if (hdlink->id == file->link) {
1336 file->hdnext = hdlink->files;
1337 hdlink->cnt++;
1338 hdlink->files = file;
1339 return (ARCHIVE_OK);
1340 }
1341 }
1342 hdlink = malloc(sizeof(*hdlink));
1343 if (hdlink == NULL) {
1344 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1345 return (ARCHIVE_FATAL);
1346 }
1347 file->hdnext = NULL;
1348 hdlink->id = file->link;
1349 hdlink->cnt = 1;
1350 hdlink->files = file;
1351 hdlink->next = xar->hdlink_list;
1352 xar->hdlink_list = hdlink;
1353 return (ARCHIVE_OK);
1354 }
1355
1356 static void
_checksum_init(struct chksumwork * sumwrk,int sum_alg)1357 _checksum_init(struct chksumwork *sumwrk, int sum_alg)
1358 {
1359 sumwrk->alg = sum_alg;
1360 switch (sum_alg) {
1361 case CKSUM_NONE:
1362 break;
1363 case CKSUM_SHA1:
1364 archive_sha1_init(&(sumwrk->sha1ctx));
1365 break;
1366 case CKSUM_MD5:
1367 archive_md5_init(&(sumwrk->md5ctx));
1368 break;
1369 }
1370 }
1371
1372 static void
_checksum_update(struct chksumwork * sumwrk,const void * buff,size_t size)1373 _checksum_update(struct chksumwork *sumwrk, const void *buff, size_t size)
1374 {
1375
1376 switch (sumwrk->alg) {
1377 case CKSUM_NONE:
1378 break;
1379 case CKSUM_SHA1:
1380 archive_sha1_update(&(sumwrk->sha1ctx), buff, size);
1381 break;
1382 case CKSUM_MD5:
1383 archive_md5_update(&(sumwrk->md5ctx), buff, size);
1384 break;
1385 }
1386 }
1387
1388 static int
_checksum_final(struct chksumwork * sumwrk,const void * val,size_t len)1389 _checksum_final(struct chksumwork *sumwrk, const void *val, size_t len)
1390 {
1391 unsigned char sum[MAX_SUM_SIZE];
1392 int r = ARCHIVE_OK;
1393
1394 switch (sumwrk->alg) {
1395 case CKSUM_NONE:
1396 break;
1397 case CKSUM_SHA1:
1398 archive_sha1_final(&(sumwrk->sha1ctx), sum);
1399 if (len != SHA1_SIZE ||
1400 memcmp(val, sum, SHA1_SIZE) != 0)
1401 r = ARCHIVE_FAILED;
1402 break;
1403 case CKSUM_MD5:
1404 archive_md5_final(&(sumwrk->md5ctx), sum);
1405 if (len != MD5_SIZE ||
1406 memcmp(val, sum, MD5_SIZE) != 0)
1407 r = ARCHIVE_FAILED;
1408 break;
1409 }
1410 return (r);
1411 }
1412
1413 static void
checksum_init(struct archive_read * a,int a_sum_alg,int e_sum_alg)1414 checksum_init(struct archive_read *a, int a_sum_alg, int e_sum_alg)
1415 {
1416 struct xar *xar;
1417
1418 xar = (struct xar *)(a->format->data);
1419 _checksum_init(&(xar->a_sumwrk), a_sum_alg);
1420 _checksum_init(&(xar->e_sumwrk), e_sum_alg);
1421 }
1422
1423 static void
checksum_update(struct archive_read * a,const void * abuff,size_t asize,const void * ebuff,size_t esize)1424 checksum_update(struct archive_read *a, const void *abuff, size_t asize,
1425 const void *ebuff, size_t esize)
1426 {
1427 struct xar *xar;
1428
1429 xar = (struct xar *)(a->format->data);
1430 _checksum_update(&(xar->a_sumwrk), abuff, asize);
1431 _checksum_update(&(xar->e_sumwrk), ebuff, esize);
1432 }
1433
1434 static int
checksum_final(struct archive_read * a,const void * a_sum_val,size_t a_sum_len,const void * e_sum_val,size_t e_sum_len)1435 checksum_final(struct archive_read *a, const void *a_sum_val,
1436 size_t a_sum_len, const void *e_sum_val, size_t e_sum_len)
1437 {
1438 struct xar *xar;
1439 int r;
1440
1441 xar = (struct xar *)(a->format->data);
1442 r = _checksum_final(&(xar->a_sumwrk), a_sum_val, a_sum_len);
1443 if (r == ARCHIVE_OK)
1444 r = _checksum_final(&(xar->e_sumwrk), e_sum_val, e_sum_len);
1445 if (r != ARCHIVE_OK)
1446 archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
1447 "Sumcheck error");
1448 return (r);
1449 }
1450
1451 static int
decompression_init(struct archive_read * a,enum enctype encoding)1452 decompression_init(struct archive_read *a, enum enctype encoding)
1453 {
1454 struct xar *xar;
1455 const char *detail;
1456 int r;
1457
1458 xar = (struct xar *)(a->format->data);
1459 xar->rd_encoding = encoding;
1460 switch (encoding) {
1461 case NONE:
1462 break;
1463 case GZIP:
1464 if (xar->stream_valid)
1465 r = inflateReset(&(xar->stream));
1466 else
1467 r = inflateInit(&(xar->stream));
1468 if (r != Z_OK) {
1469 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1470 "Couldn't initialize zlib stream.");
1471 return (ARCHIVE_FATAL);
1472 }
1473 xar->stream_valid = 1;
1474 xar->stream.total_in = 0;
1475 xar->stream.total_out = 0;
1476 break;
1477 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1478 case BZIP2:
1479 if (xar->bzstream_valid) {
1480 BZ2_bzDecompressEnd(&(xar->bzstream));
1481 xar->bzstream_valid = 0;
1482 }
1483 r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 0);
1484 if (r == BZ_MEM_ERROR)
1485 r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 1);
1486 if (r != BZ_OK) {
1487 int err = ARCHIVE_ERRNO_MISC;
1488 detail = NULL;
1489 switch (r) {
1490 case BZ_PARAM_ERROR:
1491 detail = "invalid setup parameter";
1492 break;
1493 case BZ_MEM_ERROR:
1494 err = ENOMEM;
1495 detail = "out of memory";
1496 break;
1497 case BZ_CONFIG_ERROR:
1498 detail = "mis-compiled library";
1499 break;
1500 }
1501 archive_set_error(&a->archive, err,
1502 "Internal error initializing decompressor: %s",
1503 detail == NULL ? "??" : detail);
1504 xar->bzstream_valid = 0;
1505 return (ARCHIVE_FATAL);
1506 }
1507 xar->bzstream_valid = 1;
1508 xar->bzstream.total_in_lo32 = 0;
1509 xar->bzstream.total_in_hi32 = 0;
1510 xar->bzstream.total_out_lo32 = 0;
1511 xar->bzstream.total_out_hi32 = 0;
1512 break;
1513 #endif
1514 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1515 #if LZMA_VERSION_MAJOR >= 5
1516 /* Effectively disable the limiter. */
1517 #define LZMA_MEMLIMIT UINT64_MAX
1518 #else
1519 /* NOTE: This needs to check memory size which running system has. */
1520 #define LZMA_MEMLIMIT (1U << 30)
1521 #endif
1522 case XZ:
1523 case LZMA:
1524 if (xar->lzstream_valid) {
1525 lzma_end(&(xar->lzstream));
1526 xar->lzstream_valid = 0;
1527 }
1528 if (xar->entry_encoding == XZ)
1529 r = lzma_stream_decoder(&(xar->lzstream),
1530 LZMA_MEMLIMIT,/* memlimit */
1531 LZMA_CONCATENATED);
1532 else
1533 r = lzma_alone_decoder(&(xar->lzstream),
1534 LZMA_MEMLIMIT);/* memlimit */
1535 if (r != LZMA_OK) {
1536 switch (r) {
1537 case LZMA_MEM_ERROR:
1538 archive_set_error(&a->archive,
1539 ENOMEM,
1540 "Internal error initializing "
1541 "compression library: "
1542 "Cannot allocate memory");
1543 break;
1544 case LZMA_OPTIONS_ERROR:
1545 archive_set_error(&a->archive,
1546 ARCHIVE_ERRNO_MISC,
1547 "Internal error initializing "
1548 "compression library: "
1549 "Invalid or unsupported options");
1550 break;
1551 default:
1552 archive_set_error(&a->archive,
1553 ARCHIVE_ERRNO_MISC,
1554 "Internal error initializing "
1555 "lzma library");
1556 break;
1557 }
1558 return (ARCHIVE_FATAL);
1559 }
1560 xar->lzstream_valid = 1;
1561 xar->lzstream.total_in = 0;
1562 xar->lzstream.total_out = 0;
1563 break;
1564 #endif
1565 /*
1566 * Unsupported compression.
1567 */
1568 default:
1569 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR)
1570 case BZIP2:
1571 #endif
1572 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
1573 case LZMA:
1574 case XZ:
1575 #endif
1576 switch (xar->entry_encoding) {
1577 case BZIP2: detail = "bzip2"; break;
1578 case LZMA: detail = "lzma"; break;
1579 case XZ: detail = "xz"; break;
1580 default: detail = "??"; break;
1581 }
1582 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1583 "%s compression not supported on this platform",
1584 detail);
1585 return (ARCHIVE_FAILED);
1586 }
1587 return (ARCHIVE_OK);
1588 }
1589
1590 static int
decompress(struct archive_read * a,const void ** buff,size_t * outbytes,const void * b,size_t * used)1591 decompress(struct archive_read *a, const void **buff, size_t *outbytes,
1592 const void *b, size_t *used)
1593 {
1594 struct xar *xar;
1595 void *outbuff;
1596 size_t avail_in, avail_out;
1597 int r;
1598
1599 xar = (struct xar *)(a->format->data);
1600 avail_in = *used;
1601 outbuff = (void *)(uintptr_t)*buff;
1602 if (outbuff == NULL) {
1603 if (xar->outbuff == NULL) {
1604 xar->outbuff = malloc(OUTBUFF_SIZE);
1605 if (xar->outbuff == NULL) {
1606 archive_set_error(&a->archive, ENOMEM,
1607 "Couldn't allocate memory for out buffer");
1608 return (ARCHIVE_FATAL);
1609 }
1610 }
1611 outbuff = xar->outbuff;
1612 *buff = outbuff;
1613 avail_out = OUTBUFF_SIZE;
1614 } else
1615 avail_out = *outbytes;
1616 switch (xar->rd_encoding) {
1617 case GZIP:
1618 xar->stream.next_in = (Bytef *)(uintptr_t)b;
1619 xar->stream.avail_in = (uInt)avail_in;
1620 xar->stream.next_out = (unsigned char *)outbuff;
1621 xar->stream.avail_out = (uInt)avail_out;
1622 r = inflate(&(xar->stream), 0);
1623 switch (r) {
1624 case Z_OK: /* Decompressor made some progress.*/
1625 case Z_STREAM_END: /* Found end of stream. */
1626 break;
1627 default:
1628 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1629 "File decompression failed (%d)", r);
1630 return (ARCHIVE_FATAL);
1631 }
1632 *used = avail_in - xar->stream.avail_in;
1633 *outbytes = avail_out - xar->stream.avail_out;
1634 break;
1635 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1636 case BZIP2:
1637 xar->bzstream.next_in = (char *)(uintptr_t)b;
1638 xar->bzstream.avail_in = (unsigned int)avail_in;
1639 xar->bzstream.next_out = (char *)outbuff;
1640 xar->bzstream.avail_out = (unsigned int)avail_out;
1641 r = BZ2_bzDecompress(&(xar->bzstream));
1642 switch (r) {
1643 case BZ_STREAM_END: /* Found end of stream. */
1644 switch (BZ2_bzDecompressEnd(&(xar->bzstream))) {
1645 case BZ_OK:
1646 break;
1647 default:
1648 archive_set_error(&(a->archive),
1649 ARCHIVE_ERRNO_MISC,
1650 "Failed to clean up decompressor");
1651 return (ARCHIVE_FATAL);
1652 }
1653 xar->bzstream_valid = 0;
1654 /* FALLTHROUGH */
1655 case BZ_OK: /* Decompressor made some progress. */
1656 break;
1657 default:
1658 archive_set_error(&(a->archive),
1659 ARCHIVE_ERRNO_MISC,
1660 "bzip decompression failed");
1661 return (ARCHIVE_FATAL);
1662 }
1663 *used = avail_in - xar->bzstream.avail_in;
1664 *outbytes = avail_out - xar->bzstream.avail_out;
1665 break;
1666 #endif
1667 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1668 case LZMA:
1669 case XZ:
1670 xar->lzstream.next_in = b;
1671 xar->lzstream.avail_in = avail_in;
1672 xar->lzstream.next_out = (unsigned char *)outbuff;
1673 xar->lzstream.avail_out = avail_out;
1674 r = lzma_code(&(xar->lzstream), LZMA_RUN);
1675 switch (r) {
1676 case LZMA_STREAM_END: /* Found end of stream. */
1677 lzma_end(&(xar->lzstream));
1678 xar->lzstream_valid = 0;
1679 /* FALLTHROUGH */
1680 case LZMA_OK: /* Decompressor made some progress. */
1681 break;
1682 default:
1683 archive_set_error(&(a->archive),
1684 ARCHIVE_ERRNO_MISC,
1685 "%s decompression failed(%d)",
1686 (xar->entry_encoding == XZ)?"xz":"lzma",
1687 r);
1688 return (ARCHIVE_FATAL);
1689 }
1690 *used = avail_in - xar->lzstream.avail_in;
1691 *outbytes = avail_out - xar->lzstream.avail_out;
1692 break;
1693 #endif
1694 #if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR)
1695 case BZIP2:
1696 #endif
1697 #if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
1698 case LZMA:
1699 case XZ:
1700 #endif
1701 case NONE:
1702 default:
1703 if (outbuff == xar->outbuff) {
1704 *buff = b;
1705 *used = avail_in;
1706 *outbytes = avail_in;
1707 } else {
1708 if (avail_out > avail_in)
1709 avail_out = avail_in;
1710 memcpy(outbuff, b, avail_out);
1711 *used = avail_out;
1712 *outbytes = avail_out;
1713 }
1714 break;
1715 }
1716 return (ARCHIVE_OK);
1717 }
1718
1719 static int
decompression_cleanup(struct archive_read * a)1720 decompression_cleanup(struct archive_read *a)
1721 {
1722 struct xar *xar;
1723 int r;
1724
1725 xar = (struct xar *)(a->format->data);
1726 r = ARCHIVE_OK;
1727 if (xar->stream_valid) {
1728 if (inflateEnd(&(xar->stream)) != Z_OK) {
1729 archive_set_error(&a->archive,
1730 ARCHIVE_ERRNO_MISC,
1731 "Failed to clean up zlib decompressor");
1732 r = ARCHIVE_FATAL;
1733 }
1734 }
1735 #if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
1736 if (xar->bzstream_valid) {
1737 if (BZ2_bzDecompressEnd(&(xar->bzstream)) != BZ_OK) {
1738 archive_set_error(&a->archive,
1739 ARCHIVE_ERRNO_MISC,
1740 "Failed to clean up bzip2 decompressor");
1741 r = ARCHIVE_FATAL;
1742 }
1743 }
1744 #endif
1745 #if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1746 if (xar->lzstream_valid)
1747 lzma_end(&(xar->lzstream));
1748 #elif defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
1749 if (xar->lzstream_valid) {
1750 if (lzmadec_end(&(xar->lzstream)) != LZMADEC_OK) {
1751 archive_set_error(&a->archive,
1752 ARCHIVE_ERRNO_MISC,
1753 "Failed to clean up lzmadec decompressor");
1754 r = ARCHIVE_FATAL;
1755 }
1756 }
1757 #endif
1758 return (r);
1759 }
1760
1761 static void
checksum_cleanup(struct archive_read * a)1762 checksum_cleanup(struct archive_read *a) {
1763 struct xar *xar;
1764
1765 xar = (struct xar *)(a->format->data);
1766
1767 _checksum_final(&(xar->a_sumwrk), NULL, 0);
1768 _checksum_final(&(xar->e_sumwrk), NULL, 0);
1769 }
1770
1771 static void
xmlattr_cleanup(struct xmlattr_list * list)1772 xmlattr_cleanup(struct xmlattr_list *list)
1773 {
1774 struct xmlattr *attr, *next;
1775
1776 attr = list->first;
1777 while (attr != NULL) {
1778 next = attr->next;
1779 free(attr->name);
1780 free(attr->value);
1781 free(attr);
1782 attr = next;
1783 }
1784 list->first = NULL;
1785 list->last = &(list->first);
1786 }
1787
1788 static int
file_new(struct archive_read * a,struct xar * xar,struct xmlattr_list * list)1789 file_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list)
1790 {
1791 struct xar_file *file;
1792 struct xmlattr *attr;
1793
1794 file = calloc(1, sizeof(*file));
1795 if (file == NULL) {
1796 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1797 return (ARCHIVE_FATAL);
1798 }
1799 file->parent = xar->file;
1800 file->mode = 0777 | AE_IFREG;
1801 file->atime = 0;
1802 file->mtime = 0;
1803 xar->file = file;
1804 xar->xattr = NULL;
1805 for (attr = list->first; attr != NULL; attr = attr->next) {
1806 if (strcmp(attr->name, "id") == 0)
1807 file->id = atol10(attr->value, strlen(attr->value));
1808 }
1809 file->nlink = 1;
1810 if (heap_add_entry(a, &(xar->file_queue), file) != ARCHIVE_OK)
1811 return (ARCHIVE_FATAL);
1812 return (ARCHIVE_OK);
1813 }
1814
1815 static void
file_free(struct xar_file * file)1816 file_free(struct xar_file *file)
1817 {
1818 struct xattr *xattr;
1819
1820 archive_string_free(&(file->pathname));
1821 archive_string_free(&(file->symlink));
1822 archive_string_free(&(file->uname));
1823 archive_string_free(&(file->gname));
1824 archive_string_free(&(file->hardlink));
1825 xattr = file->xattr_list;
1826 while (xattr != NULL) {
1827 struct xattr *next;
1828
1829 next = xattr->next;
1830 xattr_free(xattr);
1831 xattr = next;
1832 }
1833
1834 free(file);
1835 }
1836
1837 static int
xattr_new(struct archive_read * a,struct xar * xar,struct xmlattr_list * list)1838 xattr_new(struct archive_read *a, struct xar *xar, struct xmlattr_list *list)
1839 {
1840 struct xattr *xattr, **nx;
1841 struct xmlattr *attr;
1842
1843 xattr = calloc(1, sizeof(*xattr));
1844 if (xattr == NULL) {
1845 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1846 return (ARCHIVE_FATAL);
1847 }
1848 xar->xattr = xattr;
1849 for (attr = list->first; attr != NULL; attr = attr->next) {
1850 if (strcmp(attr->name, "id") == 0)
1851 xattr->id = atol10(attr->value, strlen(attr->value));
1852 }
1853 /* Chain to xattr list. */
1854 for (nx = &(xar->file->xattr_list);
1855 *nx != NULL; nx = &((*nx)->next)) {
1856 if (xattr->id < (*nx)->id)
1857 break;
1858 }
1859 xattr->next = *nx;
1860 *nx = xattr;
1861
1862 return (ARCHIVE_OK);
1863 }
1864
1865 static void
xattr_free(struct xattr * xattr)1866 xattr_free(struct xattr *xattr)
1867 {
1868 archive_string_free(&(xattr->name));
1869 free(xattr);
1870 }
1871
1872 static int
getencoding(struct xmlattr_list * list)1873 getencoding(struct xmlattr_list *list)
1874 {
1875 struct xmlattr *attr;
1876 enum enctype encoding = NONE;
1877
1878 for (attr = list->first; attr != NULL; attr = attr->next) {
1879 if (strcmp(attr->name, "style") == 0) {
1880 if (strcmp(attr->value, "application/octet-stream") == 0)
1881 encoding = NONE;
1882 else if (strcmp(attr->value, "application/x-gzip") == 0)
1883 encoding = GZIP;
1884 else if (strcmp(attr->value, "application/x-bzip2") == 0)
1885 encoding = BZIP2;
1886 else if (strcmp(attr->value, "application/x-lzma") == 0)
1887 encoding = LZMA;
1888 else if (strcmp(attr->value, "application/x-xz") == 0)
1889 encoding = XZ;
1890 }
1891 }
1892 return (encoding);
1893 }
1894
1895 static int
getsumalgorithm(struct xmlattr_list * list)1896 getsumalgorithm(struct xmlattr_list *list)
1897 {
1898 struct xmlattr *attr;
1899 int alg = CKSUM_NONE;
1900
1901 for (attr = list->first; attr != NULL; attr = attr->next) {
1902 if (strcmp(attr->name, "style") == 0) {
1903 const char *v = attr->value;
1904 if ((v[0] == 'S' || v[0] == 's') &&
1905 (v[1] == 'H' || v[1] == 'h') &&
1906 (v[2] == 'A' || v[2] == 'a') &&
1907 v[3] == '1' && v[4] == '\0')
1908 alg = CKSUM_SHA1;
1909 if ((v[0] == 'M' || v[0] == 'm') &&
1910 (v[1] == 'D' || v[1] == 'd') &&
1911 v[2] == '5' && v[3] == '\0')
1912 alg = CKSUM_MD5;
1913 }
1914 }
1915 return (alg);
1916 }
1917
1918 static int
unknowntag_start(struct archive_read * a,struct xar * xar,const char * name)1919 unknowntag_start(struct archive_read *a, struct xar *xar, const char *name)
1920 {
1921 struct unknown_tag *tag;
1922
1923 tag = malloc(sizeof(*tag));
1924 if (tag == NULL) {
1925 archive_set_error(&a->archive, ENOMEM, "Out of memory");
1926 return (ARCHIVE_FATAL);
1927 }
1928 tag->next = xar->unknowntags;
1929 archive_string_init(&(tag->name));
1930 archive_strcpy(&(tag->name), name);
1931 if (xar->unknowntags == NULL) {
1932 #if DEBUG
1933 fprintf(stderr, "UNKNOWNTAG_START:%s\n", name);
1934 #endif
1935 xar->xmlsts_unknown = xar->xmlsts;
1936 xar->xmlsts = UNKNOWN;
1937 }
1938 xar->unknowntags = tag;
1939 return (ARCHIVE_OK);
1940 }
1941
1942 static void
unknowntag_end(struct xar * xar,const char * name)1943 unknowntag_end(struct xar *xar, const char *name)
1944 {
1945 struct unknown_tag *tag;
1946
1947 tag = xar->unknowntags;
1948 if (tag == NULL || name == NULL)
1949 return;
1950 if (strcmp(tag->name.s, name) == 0) {
1951 xar->unknowntags = tag->next;
1952 archive_string_free(&(tag->name));
1953 free(tag);
1954 if (xar->unknowntags == NULL) {
1955 #if DEBUG
1956 fprintf(stderr, "UNKNOWNTAG_END:%s\n", name);
1957 #endif
1958 xar->xmlsts = xar->xmlsts_unknown;
1959 }
1960 }
1961 }
1962
1963 static int
xml_start(struct archive_read * a,const char * name,struct xmlattr_list * list)1964 xml_start(struct archive_read *a, const char *name, struct xmlattr_list *list)
1965 {
1966 struct xar *xar;
1967 struct xmlattr *attr;
1968
1969 xar = (struct xar *)(a->format->data);
1970
1971 #if DEBUG
1972 fprintf(stderr, "xml_sta:[%s]\n", name);
1973 for (attr = list->first; attr != NULL; attr = attr->next)
1974 fprintf(stderr, " attr:\"%s\"=\"%s\"\n",
1975 attr->name, attr->value);
1976 #endif
1977 xar->base64text = 0;
1978 switch (xar->xmlsts) {
1979 case INIT:
1980 if (strcmp(name, "xar") == 0)
1981 xar->xmlsts = XAR;
1982 else
1983 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1984 return (ARCHIVE_FATAL);
1985 break;
1986 case XAR:
1987 if (strcmp(name, "toc") == 0)
1988 xar->xmlsts = TOC;
1989 else
1990 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
1991 return (ARCHIVE_FATAL);
1992 break;
1993 case TOC:
1994 if (strcmp(name, "creation-time") == 0)
1995 xar->xmlsts = TOC_CREATION_TIME;
1996 else if (strcmp(name, "checksum") == 0)
1997 xar->xmlsts = TOC_CHECKSUM;
1998 else if (strcmp(name, "file") == 0) {
1999 if (file_new(a, xar, list) != ARCHIVE_OK)
2000 return (ARCHIVE_FATAL);
2001 xar->xmlsts = TOC_FILE;
2002 }
2003 else
2004 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2005 return (ARCHIVE_FATAL);
2006 break;
2007 case TOC_CHECKSUM:
2008 if (strcmp(name, "offset") == 0)
2009 xar->xmlsts = TOC_CHECKSUM_OFFSET;
2010 else if (strcmp(name, "size") == 0)
2011 xar->xmlsts = TOC_CHECKSUM_SIZE;
2012 else
2013 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2014 return (ARCHIVE_FATAL);
2015 break;
2016 case TOC_FILE:
2017 if (strcmp(name, "file") == 0) {
2018 if (file_new(a, xar, list) != ARCHIVE_OK)
2019 return (ARCHIVE_FATAL);
2020 }
2021 else if (strcmp(name, "data") == 0)
2022 xar->xmlsts = FILE_DATA;
2023 else if (strcmp(name, "ea") == 0) {
2024 if (xattr_new(a, xar, list) != ARCHIVE_OK)
2025 return (ARCHIVE_FATAL);
2026 xar->xmlsts = FILE_EA;
2027 }
2028 else if (strcmp(name, "ctime") == 0)
2029 xar->xmlsts = FILE_CTIME;
2030 else if (strcmp(name, "mtime") == 0)
2031 xar->xmlsts = FILE_MTIME;
2032 else if (strcmp(name, "atime") == 0)
2033 xar->xmlsts = FILE_ATIME;
2034 else if (strcmp(name, "group") == 0)
2035 xar->xmlsts = FILE_GROUP;
2036 else if (strcmp(name, "gid") == 0)
2037 xar->xmlsts = FILE_GID;
2038 else if (strcmp(name, "user") == 0)
2039 xar->xmlsts = FILE_USER;
2040 else if (strcmp(name, "uid") == 0)
2041 xar->xmlsts = FILE_UID;
2042 else if (strcmp(name, "mode") == 0)
2043 xar->xmlsts = FILE_MODE;
2044 else if (strcmp(name, "device") == 0)
2045 xar->xmlsts = FILE_DEVICE;
2046 else if (strcmp(name, "deviceno") == 0)
2047 xar->xmlsts = FILE_DEVICENO;
2048 else if (strcmp(name, "inode") == 0)
2049 xar->xmlsts = FILE_INODE;
2050 else if (strcmp(name, "link") == 0)
2051 xar->xmlsts = FILE_LINK;
2052 else if (strcmp(name, "type") == 0) {
2053 xar->xmlsts = FILE_TYPE;
2054 for (attr = list->first; attr != NULL;
2055 attr = attr->next) {
2056 if (strcmp(attr->name, "link") != 0)
2057 continue;
2058 if (xar->file->hdnext != NULL || xar->file->link != 0 ||
2059 xar->file == xar->hdlink_orgs) {
2060 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2061 "File with multiple link attributes");
2062 return (ARCHIVE_FATAL);
2063 }
2064 if (strcmp(attr->value, "original") == 0) {
2065 xar->file->hdnext = xar->hdlink_orgs;
2066 xar->hdlink_orgs = xar->file;
2067 } else {
2068 xar->file->link = (unsigned)atol10(attr->value,
2069 strlen(attr->value));
2070 if (xar->file->link > 0)
2071 if (add_link(a, xar, xar->file) != ARCHIVE_OK) {
2072 return (ARCHIVE_FATAL);
2073 };
2074 }
2075 }
2076 }
2077 else if (strcmp(name, "name") == 0) {
2078 xar->xmlsts = FILE_NAME;
2079 for (attr = list->first; attr != NULL;
2080 attr = attr->next) {
2081 if (strcmp(attr->name, "enctype") == 0 &&
2082 strcmp(attr->value, "base64") == 0)
2083 xar->base64text = 1;
2084 }
2085 }
2086 else if (strcmp(name, "acl") == 0)
2087 xar->xmlsts = FILE_ACL;
2088 else if (strcmp(name, "flags") == 0)
2089 xar->xmlsts = FILE_FLAGS;
2090 else if (strcmp(name, "ext2") == 0)
2091 xar->xmlsts = FILE_EXT2;
2092 else
2093 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2094 return (ARCHIVE_FATAL);
2095 break;
2096 case FILE_DATA:
2097 if (strcmp(name, "length") == 0)
2098 xar->xmlsts = FILE_DATA_LENGTH;
2099 else if (strcmp(name, "offset") == 0)
2100 xar->xmlsts = FILE_DATA_OFFSET;
2101 else if (strcmp(name, "size") == 0)
2102 xar->xmlsts = FILE_DATA_SIZE;
2103 else if (strcmp(name, "encoding") == 0) {
2104 xar->xmlsts = FILE_DATA_ENCODING;
2105 xar->file->encoding = getencoding(list);
2106 }
2107 else if (strcmp(name, "archived-checksum") == 0) {
2108 xar->xmlsts = FILE_DATA_A_CHECKSUM;
2109 xar->file->a_sum.alg = getsumalgorithm(list);
2110 }
2111 else if (strcmp(name, "extracted-checksum") == 0) {
2112 xar->xmlsts = FILE_DATA_E_CHECKSUM;
2113 xar->file->e_sum.alg = getsumalgorithm(list);
2114 }
2115 else if (strcmp(name, "content") == 0)
2116 xar->xmlsts = FILE_DATA_CONTENT;
2117 else
2118 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2119 return (ARCHIVE_FATAL);
2120 break;
2121 case FILE_DEVICE:
2122 if (strcmp(name, "major") == 0)
2123 xar->xmlsts = FILE_DEVICE_MAJOR;
2124 else if (strcmp(name, "minor") == 0)
2125 xar->xmlsts = FILE_DEVICE_MINOR;
2126 else
2127 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2128 return (ARCHIVE_FATAL);
2129 break;
2130 case FILE_DATA_CONTENT:
2131 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2132 return (ARCHIVE_FATAL);
2133 break;
2134 case FILE_EA:
2135 if (strcmp(name, "length") == 0)
2136 xar->xmlsts = FILE_EA_LENGTH;
2137 else if (strcmp(name, "offset") == 0)
2138 xar->xmlsts = FILE_EA_OFFSET;
2139 else if (strcmp(name, "size") == 0)
2140 xar->xmlsts = FILE_EA_SIZE;
2141 else if (strcmp(name, "encoding") == 0) {
2142 xar->xmlsts = FILE_EA_ENCODING;
2143 xar->xattr->encoding = getencoding(list);
2144 } else if (strcmp(name, "archived-checksum") == 0)
2145 xar->xmlsts = FILE_EA_A_CHECKSUM;
2146 else if (strcmp(name, "extracted-checksum") == 0)
2147 xar->xmlsts = FILE_EA_E_CHECKSUM;
2148 else if (strcmp(name, "name") == 0)
2149 xar->xmlsts = FILE_EA_NAME;
2150 else if (strcmp(name, "fstype") == 0)
2151 xar->xmlsts = FILE_EA_FSTYPE;
2152 else
2153 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2154 return (ARCHIVE_FATAL);
2155 break;
2156 case FILE_ACL:
2157 if (strcmp(name, "appleextended") == 0)
2158 xar->xmlsts = FILE_ACL_APPLEEXTENDED;
2159 else if (strcmp(name, "default") == 0)
2160 xar->xmlsts = FILE_ACL_DEFAULT;
2161 else if (strcmp(name, "access") == 0)
2162 xar->xmlsts = FILE_ACL_ACCESS;
2163 else
2164 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2165 return (ARCHIVE_FATAL);
2166 break;
2167 case FILE_FLAGS:
2168 if (!xml_parse_file_flags(xar, name))
2169 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2170 return (ARCHIVE_FATAL);
2171 break;
2172 case FILE_EXT2:
2173 if (!xml_parse_file_ext2(xar, name))
2174 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2175 return (ARCHIVE_FATAL);
2176 break;
2177 case TOC_CREATION_TIME:
2178 case TOC_CHECKSUM_OFFSET:
2179 case TOC_CHECKSUM_SIZE:
2180 case FILE_DATA_LENGTH:
2181 case FILE_DATA_OFFSET:
2182 case FILE_DATA_SIZE:
2183 case FILE_DATA_ENCODING:
2184 case FILE_DATA_A_CHECKSUM:
2185 case FILE_DATA_E_CHECKSUM:
2186 case FILE_EA_LENGTH:
2187 case FILE_EA_OFFSET:
2188 case FILE_EA_SIZE:
2189 case FILE_EA_ENCODING:
2190 case FILE_EA_A_CHECKSUM:
2191 case FILE_EA_E_CHECKSUM:
2192 case FILE_EA_NAME:
2193 case FILE_EA_FSTYPE:
2194 case FILE_CTIME:
2195 case FILE_MTIME:
2196 case FILE_ATIME:
2197 case FILE_GROUP:
2198 case FILE_GID:
2199 case FILE_USER:
2200 case FILE_UID:
2201 case FILE_INODE:
2202 case FILE_DEVICE_MAJOR:
2203 case FILE_DEVICE_MINOR:
2204 case FILE_DEVICENO:
2205 case FILE_MODE:
2206 case FILE_TYPE:
2207 case FILE_LINK:
2208 case FILE_NAME:
2209 case FILE_ACL_DEFAULT:
2210 case FILE_ACL_ACCESS:
2211 case FILE_ACL_APPLEEXTENDED:
2212 case FILE_FLAGS_USER_NODUMP:
2213 case FILE_FLAGS_USER_IMMUTABLE:
2214 case FILE_FLAGS_USER_APPEND:
2215 case FILE_FLAGS_USER_OPAQUE:
2216 case FILE_FLAGS_USER_NOUNLINK:
2217 case FILE_FLAGS_SYS_ARCHIVED:
2218 case FILE_FLAGS_SYS_IMMUTABLE:
2219 case FILE_FLAGS_SYS_APPEND:
2220 case FILE_FLAGS_SYS_NOUNLINK:
2221 case FILE_FLAGS_SYS_SNAPSHOT:
2222 case FILE_EXT2_SecureDeletion:
2223 case FILE_EXT2_Undelete:
2224 case FILE_EXT2_Compress:
2225 case FILE_EXT2_Synchronous:
2226 case FILE_EXT2_Immutable:
2227 case FILE_EXT2_AppendOnly:
2228 case FILE_EXT2_NoDump:
2229 case FILE_EXT2_NoAtime:
2230 case FILE_EXT2_CompDirty:
2231 case FILE_EXT2_CompBlock:
2232 case FILE_EXT2_NoCompBlock:
2233 case FILE_EXT2_CompError:
2234 case FILE_EXT2_BTree:
2235 case FILE_EXT2_HashIndexed:
2236 case FILE_EXT2_iMagic:
2237 case FILE_EXT2_Journaled:
2238 case FILE_EXT2_NoTail:
2239 case FILE_EXT2_DirSync:
2240 case FILE_EXT2_TopDir:
2241 case FILE_EXT2_Reserved:
2242 case UNKNOWN:
2243 if (unknowntag_start(a, xar, name) != ARCHIVE_OK)
2244 return (ARCHIVE_FATAL);
2245 break;
2246 }
2247 return (ARCHIVE_OK);
2248 }
2249
2250 static void
xml_end(void * userData,const char * name)2251 xml_end(void *userData, const char *name)
2252 {
2253 struct archive_read *a;
2254 struct xar *xar;
2255
2256 a = (struct archive_read *)userData;
2257 xar = (struct xar *)(a->format->data);
2258
2259 #if DEBUG
2260 fprintf(stderr, "xml_end:[%s]\n", name);
2261 #endif
2262 switch (xar->xmlsts) {
2263 case INIT:
2264 break;
2265 case XAR:
2266 if (strcmp(name, "xar") == 0)
2267 xar->xmlsts = INIT;
2268 break;
2269 case TOC:
2270 if (strcmp(name, "toc") == 0)
2271 xar->xmlsts = XAR;
2272 break;
2273 case TOC_CREATION_TIME:
2274 if (strcmp(name, "creation-time") == 0)
2275 xar->xmlsts = TOC;
2276 break;
2277 case TOC_CHECKSUM:
2278 if (strcmp(name, "checksum") == 0)
2279 xar->xmlsts = TOC;
2280 break;
2281 case TOC_CHECKSUM_OFFSET:
2282 if (strcmp(name, "offset") == 0)
2283 xar->xmlsts = TOC_CHECKSUM;
2284 break;
2285 case TOC_CHECKSUM_SIZE:
2286 if (strcmp(name, "size") == 0)
2287 xar->xmlsts = TOC_CHECKSUM;
2288 break;
2289 case TOC_FILE:
2290 if (strcmp(name, "file") == 0) {
2291 if (xar->file->parent != NULL &&
2292 ((xar->file->mode & AE_IFMT) == AE_IFDIR))
2293 xar->file->parent->subdirs++;
2294 xar->file = xar->file->parent;
2295 if (xar->file == NULL)
2296 xar->xmlsts = TOC;
2297 }
2298 break;
2299 case FILE_DATA:
2300 if (strcmp(name, "data") == 0)
2301 xar->xmlsts = TOC_FILE;
2302 break;
2303 case FILE_DATA_LENGTH:
2304 if (strcmp(name, "length") == 0)
2305 xar->xmlsts = FILE_DATA;
2306 break;
2307 case FILE_DATA_OFFSET:
2308 if (strcmp(name, "offset") == 0)
2309 xar->xmlsts = FILE_DATA;
2310 break;
2311 case FILE_DATA_SIZE:
2312 if (strcmp(name, "size") == 0)
2313 xar->xmlsts = FILE_DATA;
2314 break;
2315 case FILE_DATA_ENCODING:
2316 if (strcmp(name, "encoding") == 0)
2317 xar->xmlsts = FILE_DATA;
2318 break;
2319 case FILE_DATA_A_CHECKSUM:
2320 if (strcmp(name, "archived-checksum") == 0)
2321 xar->xmlsts = FILE_DATA;
2322 break;
2323 case FILE_DATA_E_CHECKSUM:
2324 if (strcmp(name, "extracted-checksum") == 0)
2325 xar->xmlsts = FILE_DATA;
2326 break;
2327 case FILE_DATA_CONTENT:
2328 if (strcmp(name, "content") == 0)
2329 xar->xmlsts = FILE_DATA;
2330 break;
2331 case FILE_EA:
2332 if (strcmp(name, "ea") == 0) {
2333 xar->xmlsts = TOC_FILE;
2334 xar->xattr = NULL;
2335 }
2336 break;
2337 case FILE_EA_LENGTH:
2338 if (strcmp(name, "length") == 0)
2339 xar->xmlsts = FILE_EA;
2340 break;
2341 case FILE_EA_OFFSET:
2342 if (strcmp(name, "offset") == 0)
2343 xar->xmlsts = FILE_EA;
2344 break;
2345 case FILE_EA_SIZE:
2346 if (strcmp(name, "size") == 0)
2347 xar->xmlsts = FILE_EA;
2348 break;
2349 case FILE_EA_ENCODING:
2350 if (strcmp(name, "encoding") == 0)
2351 xar->xmlsts = FILE_EA;
2352 break;
2353 case FILE_EA_A_CHECKSUM:
2354 if (strcmp(name, "archived-checksum") == 0)
2355 xar->xmlsts = FILE_EA;
2356 break;
2357 case FILE_EA_E_CHECKSUM:
2358 if (strcmp(name, "extracted-checksum") == 0)
2359 xar->xmlsts = FILE_EA;
2360 break;
2361 case FILE_EA_NAME:
2362 if (strcmp(name, "name") == 0)
2363 xar->xmlsts = FILE_EA;
2364 break;
2365 case FILE_EA_FSTYPE:
2366 if (strcmp(name, "fstype") == 0)
2367 xar->xmlsts = FILE_EA;
2368 break;
2369 case FILE_CTIME:
2370 if (strcmp(name, "ctime") == 0)
2371 xar->xmlsts = TOC_FILE;
2372 break;
2373 case FILE_MTIME:
2374 if (strcmp(name, "mtime") == 0)
2375 xar->xmlsts = TOC_FILE;
2376 break;
2377 case FILE_ATIME:
2378 if (strcmp(name, "atime") == 0)
2379 xar->xmlsts = TOC_FILE;
2380 break;
2381 case FILE_GROUP:
2382 if (strcmp(name, "group") == 0)
2383 xar->xmlsts = TOC_FILE;
2384 break;
2385 case FILE_GID:
2386 if (strcmp(name, "gid") == 0)
2387 xar->xmlsts = TOC_FILE;
2388 break;
2389 case FILE_USER:
2390 if (strcmp(name, "user") == 0)
2391 xar->xmlsts = TOC_FILE;
2392 break;
2393 case FILE_UID:
2394 if (strcmp(name, "uid") == 0)
2395 xar->xmlsts = TOC_FILE;
2396 break;
2397 case FILE_MODE:
2398 if (strcmp(name, "mode") == 0)
2399 xar->xmlsts = TOC_FILE;
2400 break;
2401 case FILE_DEVICE:
2402 if (strcmp(name, "device") == 0)
2403 xar->xmlsts = TOC_FILE;
2404 break;
2405 case FILE_DEVICE_MAJOR:
2406 if (strcmp(name, "major") == 0)
2407 xar->xmlsts = FILE_DEVICE;
2408 break;
2409 case FILE_DEVICE_MINOR:
2410 if (strcmp(name, "minor") == 0)
2411 xar->xmlsts = FILE_DEVICE;
2412 break;
2413 case FILE_DEVICENO:
2414 if (strcmp(name, "deviceno") == 0)
2415 xar->xmlsts = TOC_FILE;
2416 break;
2417 case FILE_INODE:
2418 if (strcmp(name, "inode") == 0)
2419 xar->xmlsts = TOC_FILE;
2420 break;
2421 case FILE_LINK:
2422 if (strcmp(name, "link") == 0)
2423 xar->xmlsts = TOC_FILE;
2424 break;
2425 case FILE_TYPE:
2426 if (strcmp(name, "type") == 0)
2427 xar->xmlsts = TOC_FILE;
2428 break;
2429 case FILE_NAME:
2430 if (strcmp(name, "name") == 0)
2431 xar->xmlsts = TOC_FILE;
2432 break;
2433 case FILE_ACL:
2434 if (strcmp(name, "acl") == 0)
2435 xar->xmlsts = TOC_FILE;
2436 break;
2437 case FILE_ACL_DEFAULT:
2438 if (strcmp(name, "default") == 0)
2439 xar->xmlsts = FILE_ACL;
2440 break;
2441 case FILE_ACL_ACCESS:
2442 if (strcmp(name, "access") == 0)
2443 xar->xmlsts = FILE_ACL;
2444 break;
2445 case FILE_ACL_APPLEEXTENDED:
2446 if (strcmp(name, "appleextended") == 0)
2447 xar->xmlsts = FILE_ACL;
2448 break;
2449 case FILE_FLAGS:
2450 if (strcmp(name, "flags") == 0)
2451 xar->xmlsts = TOC_FILE;
2452 break;
2453 case FILE_FLAGS_USER_NODUMP:
2454 if (strcmp(name, "UserNoDump") == 0)
2455 xar->xmlsts = FILE_FLAGS;
2456 break;
2457 case FILE_FLAGS_USER_IMMUTABLE:
2458 if (strcmp(name, "UserImmutable") == 0)
2459 xar->xmlsts = FILE_FLAGS;
2460 break;
2461 case FILE_FLAGS_USER_APPEND:
2462 if (strcmp(name, "UserAppend") == 0)
2463 xar->xmlsts = FILE_FLAGS;
2464 break;
2465 case FILE_FLAGS_USER_OPAQUE:
2466 if (strcmp(name, "UserOpaque") == 0)
2467 xar->xmlsts = FILE_FLAGS;
2468 break;
2469 case FILE_FLAGS_USER_NOUNLINK:
2470 if (strcmp(name, "UserNoUnlink") == 0)
2471 xar->xmlsts = FILE_FLAGS;
2472 break;
2473 case FILE_FLAGS_SYS_ARCHIVED:
2474 if (strcmp(name, "SystemArchived") == 0)
2475 xar->xmlsts = FILE_FLAGS;
2476 break;
2477 case FILE_FLAGS_SYS_IMMUTABLE:
2478 if (strcmp(name, "SystemImmutable") == 0)
2479 xar->xmlsts = FILE_FLAGS;
2480 break;
2481 case FILE_FLAGS_SYS_APPEND:
2482 if (strcmp(name, "SystemAppend") == 0)
2483 xar->xmlsts = FILE_FLAGS;
2484 break;
2485 case FILE_FLAGS_SYS_NOUNLINK:
2486 if (strcmp(name, "SystemNoUnlink") == 0)
2487 xar->xmlsts = FILE_FLAGS;
2488 break;
2489 case FILE_FLAGS_SYS_SNAPSHOT:
2490 if (strcmp(name, "SystemSnapshot") == 0)
2491 xar->xmlsts = FILE_FLAGS;
2492 break;
2493 case FILE_EXT2:
2494 if (strcmp(name, "ext2") == 0)
2495 xar->xmlsts = TOC_FILE;
2496 break;
2497 case FILE_EXT2_SecureDeletion:
2498 if (strcmp(name, "SecureDeletion") == 0)
2499 xar->xmlsts = FILE_EXT2;
2500 break;
2501 case FILE_EXT2_Undelete:
2502 if (strcmp(name, "Undelete") == 0)
2503 xar->xmlsts = FILE_EXT2;
2504 break;
2505 case FILE_EXT2_Compress:
2506 if (strcmp(name, "Compress") == 0)
2507 xar->xmlsts = FILE_EXT2;
2508 break;
2509 case FILE_EXT2_Synchronous:
2510 if (strcmp(name, "Synchronous") == 0)
2511 xar->xmlsts = FILE_EXT2;
2512 break;
2513 case FILE_EXT2_Immutable:
2514 if (strcmp(name, "Immutable") == 0)
2515 xar->xmlsts = FILE_EXT2;
2516 break;
2517 case FILE_EXT2_AppendOnly:
2518 if (strcmp(name, "AppendOnly") == 0)
2519 xar->xmlsts = FILE_EXT2;
2520 break;
2521 case FILE_EXT2_NoDump:
2522 if (strcmp(name, "NoDump") == 0)
2523 xar->xmlsts = FILE_EXT2;
2524 break;
2525 case FILE_EXT2_NoAtime:
2526 if (strcmp(name, "NoAtime") == 0)
2527 xar->xmlsts = FILE_EXT2;
2528 break;
2529 case FILE_EXT2_CompDirty:
2530 if (strcmp(name, "CompDirty") == 0)
2531 xar->xmlsts = FILE_EXT2;
2532 break;
2533 case FILE_EXT2_CompBlock:
2534 if (strcmp(name, "CompBlock") == 0)
2535 xar->xmlsts = FILE_EXT2;
2536 break;
2537 case FILE_EXT2_NoCompBlock:
2538 if (strcmp(name, "NoCompBlock") == 0)
2539 xar->xmlsts = FILE_EXT2;
2540 break;
2541 case FILE_EXT2_CompError:
2542 if (strcmp(name, "CompError") == 0)
2543 xar->xmlsts = FILE_EXT2;
2544 break;
2545 case FILE_EXT2_BTree:
2546 if (strcmp(name, "BTree") == 0)
2547 xar->xmlsts = FILE_EXT2;
2548 break;
2549 case FILE_EXT2_HashIndexed:
2550 if (strcmp(name, "HashIndexed") == 0)
2551 xar->xmlsts = FILE_EXT2;
2552 break;
2553 case FILE_EXT2_iMagic:
2554 if (strcmp(name, "iMagic") == 0)
2555 xar->xmlsts = FILE_EXT2;
2556 break;
2557 case FILE_EXT2_Journaled:
2558 if (strcmp(name, "Journaled") == 0)
2559 xar->xmlsts = FILE_EXT2;
2560 break;
2561 case FILE_EXT2_NoTail:
2562 if (strcmp(name, "NoTail") == 0)
2563 xar->xmlsts = FILE_EXT2;
2564 break;
2565 case FILE_EXT2_DirSync:
2566 if (strcmp(name, "DirSync") == 0)
2567 xar->xmlsts = FILE_EXT2;
2568 break;
2569 case FILE_EXT2_TopDir:
2570 if (strcmp(name, "TopDir") == 0)
2571 xar->xmlsts = FILE_EXT2;
2572 break;
2573 case FILE_EXT2_Reserved:
2574 if (strcmp(name, "Reserved") == 0)
2575 xar->xmlsts = FILE_EXT2;
2576 break;
2577 case UNKNOWN:
2578 unknowntag_end(xar, name);
2579 break;
2580 }
2581 }
2582
2583 static const int base64[256] = {
2584 -1, -1, -1, -1, -1, -1, -1, -1,
2585 -1, -1, -1, -1, -1, -1, -1, -1, /* 00 - 0F */
2586 -1, -1, -1, -1, -1, -1, -1, -1,
2587 -1, -1, -1, -1, -1, -1, -1, -1, /* 10 - 1F */
2588 -1, -1, -1, -1, -1, -1, -1, -1,
2589 -1, -1, -1, 62, -1, -1, -1, 63, /* 20 - 2F */
2590 52, 53, 54, 55, 56, 57, 58, 59,
2591 60, 61, -1, -1, -1, -1, -1, -1, /* 30 - 3F */
2592 -1, 0, 1, 2, 3, 4, 5, 6,
2593 7, 8, 9, 10, 11, 12, 13, 14, /* 40 - 4F */
2594 15, 16, 17, 18, 19, 20, 21, 22,
2595 23, 24, 25, -1, -1, -1, -1, -1, /* 50 - 5F */
2596 -1, 26, 27, 28, 29, 30, 31, 32,
2597 33, 34, 35, 36, 37, 38, 39, 40, /* 60 - 6F */
2598 41, 42, 43, 44, 45, 46, 47, 48,
2599 49, 50, 51, -1, -1, -1, -1, -1, /* 70 - 7F */
2600 -1, -1, -1, -1, -1, -1, -1, -1,
2601 -1, -1, -1, -1, -1, -1, -1, -1, /* 80 - 8F */
2602 -1, -1, -1, -1, -1, -1, -1, -1,
2603 -1, -1, -1, -1, -1, -1, -1, -1, /* 90 - 9F */
2604 -1, -1, -1, -1, -1, -1, -1, -1,
2605 -1, -1, -1, -1, -1, -1, -1, -1, /* A0 - AF */
2606 -1, -1, -1, -1, -1, -1, -1, -1,
2607 -1, -1, -1, -1, -1, -1, -1, -1, /* B0 - BF */
2608 -1, -1, -1, -1, -1, -1, -1, -1,
2609 -1, -1, -1, -1, -1, -1, -1, -1, /* C0 - CF */
2610 -1, -1, -1, -1, -1, -1, -1, -1,
2611 -1, -1, -1, -1, -1, -1, -1, -1, /* D0 - DF */
2612 -1, -1, -1, -1, -1, -1, -1, -1,
2613 -1, -1, -1, -1, -1, -1, -1, -1, /* E0 - EF */
2614 -1, -1, -1, -1, -1, -1, -1, -1,
2615 -1, -1, -1, -1, -1, -1, -1, -1, /* F0 - FF */
2616 };
2617
2618 static void
strappend_base64(struct xar * xar,struct archive_string * as,const char * s,size_t l)2619 strappend_base64(struct xar *xar,
2620 struct archive_string *as, const char *s, size_t l)
2621 {
2622 unsigned char buff[256];
2623 unsigned char *out;
2624 const unsigned char *b;
2625 size_t len;
2626
2627 (void)xar; /* UNUSED */
2628 len = 0;
2629 out = buff;
2630 b = (const unsigned char *)s;
2631 while (l > 0) {
2632 int n = 0;
2633
2634 if (base64[b[0]] < 0 || base64[b[1]] < 0)
2635 break;
2636 n = base64[*b++] << 18;
2637 n |= base64[*b++] << 12;
2638 *out++ = n >> 16;
2639 len++;
2640 l -= 2;
2641
2642 if (l > 0) {
2643 if (base64[*b] < 0)
2644 break;
2645 n |= base64[*b++] << 6;
2646 *out++ = (n >> 8) & 0xFF;
2647 len++;
2648 --l;
2649 }
2650 if (l > 0) {
2651 if (base64[*b] < 0)
2652 break;
2653 n |= base64[*b++];
2654 *out++ = n & 0xFF;
2655 len++;
2656 --l;
2657 }
2658 if (len+3 >= sizeof(buff)) {
2659 archive_strncat(as, (const char *)buff, len);
2660 len = 0;
2661 out = buff;
2662 }
2663 }
2664 if (len > 0)
2665 archive_strncat(as, (const char *)buff, len);
2666 }
2667
2668 static int
is_string(const char * known,const char * data,size_t len)2669 is_string(const char *known, const char *data, size_t len)
2670 {
2671 if (strlen(known) != len)
2672 return -1;
2673 return memcmp(data, known, len);
2674 }
2675
2676 static void
xml_data(void * userData,const char * s,size_t len)2677 xml_data(void *userData, const char *s, size_t len)
2678 {
2679 struct archive_read *a;
2680 struct xar *xar;
2681
2682 a = (struct archive_read *)userData;
2683 xar = (struct xar *)(a->format->data);
2684
2685 #if DEBUG
2686 {
2687 char buff[1024];
2688 if (len > (int)(sizeof(buff)-1))
2689 len = (int)(sizeof(buff)-1);
2690 strncpy(buff, s, len);
2691 buff[len] = 0;
2692 fprintf(stderr, "\tlen=%d:\"%s\"\n", len, buff);
2693 }
2694 #endif
2695 switch (xar->xmlsts) {
2696 case TOC_CHECKSUM_OFFSET:
2697 xar->toc_chksum_offset = atol10(s, len);
2698 break;
2699 case TOC_CHECKSUM_SIZE:
2700 xar->toc_chksum_size = atol10(s, len);
2701 break;
2702 default:
2703 break;
2704 }
2705 if (xar->file == NULL)
2706 return;
2707
2708 switch (xar->xmlsts) {
2709 case FILE_NAME:
2710 if (xar->file->has & HAS_PATHNAME)
2711 break;
2712
2713 if (xar->file->parent != NULL) {
2714 archive_string_concat(&(xar->file->pathname),
2715 &(xar->file->parent->pathname));
2716 archive_strappend_char(&(xar->file->pathname), '/');
2717 }
2718 xar->file->has |= HAS_PATHNAME;
2719 if (xar->base64text) {
2720 strappend_base64(xar,
2721 &(xar->file->pathname), s, len);
2722 } else
2723 archive_strncat(&(xar->file->pathname), s, len);
2724 break;
2725 case FILE_LINK:
2726 xar->file->has |= HAS_SYMLINK;
2727 archive_strncpy(&(xar->file->symlink), s, len);
2728 break;
2729 case FILE_TYPE:
2730 if (is_string("file", s, len) == 0 ||
2731 is_string("hardlink", s, len) == 0)
2732 xar->file->mode =
2733 (xar->file->mode & ~AE_IFMT) | AE_IFREG;
2734 if (is_string("directory", s, len) == 0)
2735 xar->file->mode =
2736 (xar->file->mode & ~AE_IFMT) | AE_IFDIR;
2737 if (is_string("symlink", s, len) == 0)
2738 xar->file->mode =
2739 (xar->file->mode & ~AE_IFMT) | AE_IFLNK;
2740 if (is_string("character special", s, len) == 0)
2741 xar->file->mode =
2742 (xar->file->mode & ~AE_IFMT) | AE_IFCHR;
2743 if (is_string("block special", s, len) == 0)
2744 xar->file->mode =
2745 (xar->file->mode & ~AE_IFMT) | AE_IFBLK;
2746 if (is_string("socket", s, len) == 0)
2747 xar->file->mode =
2748 (xar->file->mode & ~AE_IFMT) | AE_IFSOCK;
2749 if (is_string("fifo", s, len) == 0)
2750 xar->file->mode =
2751 (xar->file->mode & ~AE_IFMT) | AE_IFIFO;
2752 xar->file->has |= HAS_TYPE;
2753 break;
2754 case FILE_INODE:
2755 xar->file->has |= HAS_INO;
2756 xar->file->ino64 = atol10(s, len);
2757 break;
2758 case FILE_DEVICE_MAJOR:
2759 xar->file->has |= HAS_DEVMAJOR;
2760 xar->file->devmajor = (dev_t)atol10(s, len);
2761 break;
2762 case FILE_DEVICE_MINOR:
2763 xar->file->has |= HAS_DEVMINOR;
2764 xar->file->devminor = (dev_t)atol10(s, len);
2765 break;
2766 case FILE_DEVICENO:
2767 xar->file->has |= HAS_DEV;
2768 xar->file->dev = (dev_t)atol10(s, len);
2769 break;
2770 case FILE_MODE:
2771 xar->file->has |= HAS_MODE;
2772 xar->file->mode =
2773 (xar->file->mode & AE_IFMT) |
2774 ((mode_t)(atol8(s, len)) & ~AE_IFMT);
2775 break;
2776 case FILE_GROUP:
2777 xar->file->has |= HAS_GID;
2778 archive_strncpy(&(xar->file->gname), s, len);
2779 break;
2780 case FILE_GID:
2781 xar->file->has |= HAS_GID;
2782 xar->file->gid = atol10(s, len);
2783 break;
2784 case FILE_USER:
2785 xar->file->has |= HAS_UID;
2786 archive_strncpy(&(xar->file->uname), s, len);
2787 break;
2788 case FILE_UID:
2789 xar->file->has |= HAS_UID;
2790 xar->file->uid = atol10(s, len);
2791 break;
2792 case FILE_CTIME:
2793 xar->file->has |= HAS_TIME | HAS_CTIME;
2794 xar->file->ctime = parse_time(s, len);
2795 break;
2796 case FILE_MTIME:
2797 xar->file->has |= HAS_TIME | HAS_MTIME;
2798 xar->file->mtime = parse_time(s, len);
2799 break;
2800 case FILE_ATIME:
2801 xar->file->has |= HAS_TIME | HAS_ATIME;
2802 xar->file->atime = parse_time(s, len);
2803 break;
2804 case FILE_DATA_LENGTH:
2805 xar->file->has |= HAS_DATA;
2806 xar->file->length = atol10(s, len);
2807 break;
2808 case FILE_DATA_OFFSET:
2809 xar->file->has |= HAS_DATA;
2810 xar->file->offset = atol10(s, len);
2811 break;
2812 case FILE_DATA_SIZE:
2813 xar->file->has |= HAS_DATA;
2814 xar->file->size = atol10(s, len);
2815 break;
2816 case FILE_DATA_A_CHECKSUM:
2817 xar->file->a_sum.len = atohex(xar->file->a_sum.val,
2818 sizeof(xar->file->a_sum.val), s, len);
2819 break;
2820 case FILE_DATA_E_CHECKSUM:
2821 xar->file->e_sum.len = atohex(xar->file->e_sum.val,
2822 sizeof(xar->file->e_sum.val), s, len);
2823 break;
2824 case FILE_EA_LENGTH:
2825 xar->file->has |= HAS_XATTR;
2826 xar->xattr->length = atol10(s, len);
2827 break;
2828 case FILE_EA_OFFSET:
2829 xar->file->has |= HAS_XATTR;
2830 xar->xattr->offset = atol10(s, len);
2831 break;
2832 case FILE_EA_SIZE:
2833 xar->file->has |= HAS_XATTR;
2834 xar->xattr->size = atol10(s, len);
2835 break;
2836 case FILE_EA_A_CHECKSUM:
2837 xar->file->has |= HAS_XATTR;
2838 xar->xattr->a_sum.len = atohex(xar->xattr->a_sum.val,
2839 sizeof(xar->xattr->a_sum.val), s, len);
2840 break;
2841 case FILE_EA_E_CHECKSUM:
2842 xar->file->has |= HAS_XATTR;
2843 xar->xattr->e_sum.len = atohex(xar->xattr->e_sum.val,
2844 sizeof(xar->xattr->e_sum.val), s, len);
2845 break;
2846 case FILE_EA_NAME:
2847 xar->file->has |= HAS_XATTR;
2848 archive_strncpy(&(xar->xattr->name), s, len);
2849 break;
2850 case FILE_EA_FSTYPE:
2851 xar->file->has |= HAS_XATTR;
2852 archive_strncpy(&(xar->xattr->fstype), s, len);
2853 break;
2854 break;
2855 case FILE_ACL_DEFAULT:
2856 case FILE_ACL_ACCESS:
2857 case FILE_ACL_APPLEEXTENDED:
2858 xar->file->has |= HAS_ACL;
2859 /* TODO */
2860 break;
2861 case INIT:
2862 case XAR:
2863 case TOC:
2864 case TOC_CREATION_TIME:
2865 case TOC_CHECKSUM:
2866 case TOC_CHECKSUM_OFFSET:
2867 case TOC_CHECKSUM_SIZE:
2868 case TOC_FILE:
2869 case FILE_DATA:
2870 case FILE_DATA_ENCODING:
2871 case FILE_DATA_CONTENT:
2872 case FILE_DEVICE:
2873 case FILE_EA:
2874 case FILE_EA_ENCODING:
2875 case FILE_ACL:
2876 case FILE_FLAGS:
2877 case FILE_FLAGS_USER_NODUMP:
2878 case FILE_FLAGS_USER_IMMUTABLE:
2879 case FILE_FLAGS_USER_APPEND:
2880 case FILE_FLAGS_USER_OPAQUE:
2881 case FILE_FLAGS_USER_NOUNLINK:
2882 case FILE_FLAGS_SYS_ARCHIVED:
2883 case FILE_FLAGS_SYS_IMMUTABLE:
2884 case FILE_FLAGS_SYS_APPEND:
2885 case FILE_FLAGS_SYS_NOUNLINK:
2886 case FILE_FLAGS_SYS_SNAPSHOT:
2887 case FILE_EXT2:
2888 case FILE_EXT2_SecureDeletion:
2889 case FILE_EXT2_Undelete:
2890 case FILE_EXT2_Compress:
2891 case FILE_EXT2_Synchronous:
2892 case FILE_EXT2_Immutable:
2893 case FILE_EXT2_AppendOnly:
2894 case FILE_EXT2_NoDump:
2895 case FILE_EXT2_NoAtime:
2896 case FILE_EXT2_CompDirty:
2897 case FILE_EXT2_CompBlock:
2898 case FILE_EXT2_NoCompBlock:
2899 case FILE_EXT2_CompError:
2900 case FILE_EXT2_BTree:
2901 case FILE_EXT2_HashIndexed:
2902 case FILE_EXT2_iMagic:
2903 case FILE_EXT2_Journaled:
2904 case FILE_EXT2_NoTail:
2905 case FILE_EXT2_DirSync:
2906 case FILE_EXT2_TopDir:
2907 case FILE_EXT2_Reserved:
2908 case UNKNOWN:
2909 break;
2910 }
2911 }
2912
2913 /*
2914 * BSD file flags.
2915 */
2916 static int
xml_parse_file_flags(struct xar * xar,const char * name)2917 xml_parse_file_flags(struct xar *xar, const char *name)
2918 {
2919 const char *flag = NULL;
2920
2921 if (strcmp(name, "UserNoDump") == 0) {
2922 xar->xmlsts = FILE_FLAGS_USER_NODUMP;
2923 flag = "nodump";
2924 }
2925 else if (strcmp(name, "UserImmutable") == 0) {
2926 xar->xmlsts = FILE_FLAGS_USER_IMMUTABLE;
2927 flag = "uimmutable";
2928 }
2929 else if (strcmp(name, "UserAppend") == 0) {
2930 xar->xmlsts = FILE_FLAGS_USER_APPEND;
2931 flag = "uappend";
2932 }
2933 else if (strcmp(name, "UserOpaque") == 0) {
2934 xar->xmlsts = FILE_FLAGS_USER_OPAQUE;
2935 flag = "opaque";
2936 }
2937 else if (strcmp(name, "UserNoUnlink") == 0) {
2938 xar->xmlsts = FILE_FLAGS_USER_NOUNLINK;
2939 flag = "nouunlink";
2940 }
2941 else if (strcmp(name, "SystemArchived") == 0) {
2942 xar->xmlsts = FILE_FLAGS_SYS_ARCHIVED;
2943 flag = "archived";
2944 }
2945 else if (strcmp(name, "SystemImmutable") == 0) {
2946 xar->xmlsts = FILE_FLAGS_SYS_IMMUTABLE;
2947 flag = "simmutable";
2948 }
2949 else if (strcmp(name, "SystemAppend") == 0) {
2950 xar->xmlsts = FILE_FLAGS_SYS_APPEND;
2951 flag = "sappend";
2952 }
2953 else if (strcmp(name, "SystemNoUnlink") == 0) {
2954 xar->xmlsts = FILE_FLAGS_SYS_NOUNLINK;
2955 flag = "nosunlink";
2956 }
2957 else if (strcmp(name, "SystemSnapshot") == 0) {
2958 xar->xmlsts = FILE_FLAGS_SYS_SNAPSHOT;
2959 flag = "snapshot";
2960 }
2961
2962 if (flag == NULL)
2963 return (0);
2964 xar->file->has |= HAS_FFLAGS;
2965 if (archive_strlen(&(xar->file->fflags_text)) > 0)
2966 archive_strappend_char(&(xar->file->fflags_text), ',');
2967 archive_strcat(&(xar->file->fflags_text), flag);
2968 return (1);
2969 }
2970
2971 /*
2972 * Linux file flags.
2973 */
2974 static int
xml_parse_file_ext2(struct xar * xar,const char * name)2975 xml_parse_file_ext2(struct xar *xar, const char *name)
2976 {
2977 const char *flag = NULL;
2978
2979 if (strcmp(name, "SecureDeletion") == 0) {
2980 xar->xmlsts = FILE_EXT2_SecureDeletion;
2981 flag = "securedeletion";
2982 }
2983 else if (strcmp(name, "Undelete") == 0) {
2984 xar->xmlsts = FILE_EXT2_Undelete;
2985 flag = "nouunlink";
2986 }
2987 else if (strcmp(name, "Compress") == 0) {
2988 xar->xmlsts = FILE_EXT2_Compress;
2989 flag = "compress";
2990 }
2991 else if (strcmp(name, "Synchronous") == 0) {
2992 xar->xmlsts = FILE_EXT2_Synchronous;
2993 flag = "sync";
2994 }
2995 else if (strcmp(name, "Immutable") == 0) {
2996 xar->xmlsts = FILE_EXT2_Immutable;
2997 flag = "simmutable";
2998 }
2999 else if (strcmp(name, "AppendOnly") == 0) {
3000 xar->xmlsts = FILE_EXT2_AppendOnly;
3001 flag = "sappend";
3002 }
3003 else if (strcmp(name, "NoDump") == 0) {
3004 xar->xmlsts = FILE_EXT2_NoDump;
3005 flag = "nodump";
3006 }
3007 else if (strcmp(name, "NoAtime") == 0) {
3008 xar->xmlsts = FILE_EXT2_NoAtime;
3009 flag = "noatime";
3010 }
3011 else if (strcmp(name, "CompDirty") == 0) {
3012 xar->xmlsts = FILE_EXT2_CompDirty;
3013 flag = "compdirty";
3014 }
3015 else if (strcmp(name, "CompBlock") == 0) {
3016 xar->xmlsts = FILE_EXT2_CompBlock;
3017 flag = "comprblk";
3018 }
3019 else if (strcmp(name, "NoCompBlock") == 0) {
3020 xar->xmlsts = FILE_EXT2_NoCompBlock;
3021 flag = "nocomprblk";
3022 }
3023 else if (strcmp(name, "CompError") == 0) {
3024 xar->xmlsts = FILE_EXT2_CompError;
3025 flag = "comperr";
3026 }
3027 else if (strcmp(name, "BTree") == 0) {
3028 xar->xmlsts = FILE_EXT2_BTree;
3029 flag = "btree";
3030 }
3031 else if (strcmp(name, "HashIndexed") == 0) {
3032 xar->xmlsts = FILE_EXT2_HashIndexed;
3033 flag = "hashidx";
3034 }
3035 else if (strcmp(name, "iMagic") == 0) {
3036 xar->xmlsts = FILE_EXT2_iMagic;
3037 flag = "imagic";
3038 }
3039 else if (strcmp(name, "Journaled") == 0) {
3040 xar->xmlsts = FILE_EXT2_Journaled;
3041 flag = "journal";
3042 }
3043 else if (strcmp(name, "NoTail") == 0) {
3044 xar->xmlsts = FILE_EXT2_NoTail;
3045 flag = "notail";
3046 }
3047 else if (strcmp(name, "DirSync") == 0) {
3048 xar->xmlsts = FILE_EXT2_DirSync;
3049 flag = "dirsync";
3050 }
3051 else if (strcmp(name, "TopDir") == 0) {
3052 xar->xmlsts = FILE_EXT2_TopDir;
3053 flag = "topdir";
3054 }
3055 else if (strcmp(name, "Reserved") == 0) {
3056 xar->xmlsts = FILE_EXT2_Reserved;
3057 flag = "reserved";
3058 }
3059
3060 if (flag == NULL)
3061 return (0);
3062 if (archive_strlen(&(xar->file->fflags_text)) > 0)
3063 archive_strappend_char(&(xar->file->fflags_text), ',');
3064 archive_strcat(&(xar->file->fflags_text), flag);
3065 return (1);
3066 }
3067
3068 #ifdef HAVE_LIBXML_XMLREADER_H
3069
3070 static int
xml2_xmlattr_setup(struct archive_read * a,struct xmlattr_list * list,xmlTextReaderPtr reader)3071 xml2_xmlattr_setup(struct archive_read *a,
3072 struct xmlattr_list *list, xmlTextReaderPtr reader)
3073 {
3074 struct xmlattr *attr;
3075 int r;
3076
3077 list->first = NULL;
3078 list->last = &(list->first);
3079 r = xmlTextReaderMoveToFirstAttribute(reader);
3080 while (r == 1) {
3081 attr = malloc(sizeof*(attr));
3082 if (attr == NULL) {
3083 archive_set_error(&a->archive, ENOMEM, "Out of memory");
3084 return (ARCHIVE_FATAL);
3085 }
3086 attr->name = strdup(
3087 (const char *)xmlTextReaderConstLocalName(reader));
3088 if (attr->name == NULL) {
3089 free(attr);
3090 archive_set_error(&a->archive, ENOMEM, "Out of memory");
3091 return (ARCHIVE_FATAL);
3092 }
3093 attr->value = strdup(
3094 (const char *)xmlTextReaderConstValue(reader));
3095 if (attr->value == NULL) {
3096 free(attr->name);
3097 free(attr);
3098 archive_set_error(&a->archive, ENOMEM, "Out of memory");
3099 return (ARCHIVE_FATAL);
3100 }
3101 attr->next = NULL;
3102 *list->last = attr;
3103 list->last = &(attr->next);
3104 r = xmlTextReaderMoveToNextAttribute(reader);
3105 }
3106 return (r);
3107 }
3108
3109 static int
xml2_read_cb(void * context,char * buffer,int len)3110 xml2_read_cb(void *context, char *buffer, int len)
3111 {
3112 struct archive_read *a;
3113 struct xar *xar;
3114 const void *d;
3115 size_t outbytes;
3116 size_t used = 0;
3117 int r;
3118
3119 a = (struct archive_read *)context;
3120 xar = (struct xar *)(a->format->data);
3121
3122 if (xar->toc_remaining <= 0)
3123 return (0);
3124 d = buffer;
3125 outbytes = len;
3126 r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
3127 if (r != ARCHIVE_OK)
3128 return (r);
3129 __archive_read_consume(a, used);
3130 xar->toc_remaining -= used;
3131 xar->offset += used;
3132 xar->toc_total += outbytes;
3133 PRINT_TOC(buffer, len);
3134
3135 return ((int)outbytes);
3136 }
3137
3138 static int
xml2_close_cb(void * context)3139 xml2_close_cb(void *context)
3140 {
3141
3142 (void)context; /* UNUSED */
3143 return (0);
3144 }
3145
3146 static void
xml2_error_hdr(void * arg,const char * msg,xmlParserSeverities severity,xmlTextReaderLocatorPtr locator)3147 xml2_error_hdr(void *arg, const char *msg, xmlParserSeverities severity,
3148 xmlTextReaderLocatorPtr locator)
3149 {
3150 struct archive_read *a;
3151
3152 (void)locator; /* UNUSED */
3153 a = (struct archive_read *)arg;
3154 switch (severity) {
3155 case XML_PARSER_SEVERITY_VALIDITY_WARNING:
3156 case XML_PARSER_SEVERITY_WARNING:
3157 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3158 "XML Parsing error: %s", msg);
3159 break;
3160 case XML_PARSER_SEVERITY_VALIDITY_ERROR:
3161 case XML_PARSER_SEVERITY_ERROR:
3162 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3163 "XML Parsing error: %s", msg);
3164 break;
3165 }
3166 }
3167
3168 static int
xml2_read_toc(struct archive_read * a)3169 xml2_read_toc(struct archive_read *a)
3170 {
3171 xmlTextReaderPtr reader;
3172 struct xmlattr_list list;
3173 int r;
3174
3175 reader = xmlReaderForIO(xml2_read_cb, xml2_close_cb, a, NULL, NULL, 0);
3176 if (reader == NULL) {
3177 archive_set_error(&a->archive, ENOMEM,
3178 "Couldn't allocate memory for xml parser");
3179 return (ARCHIVE_FATAL);
3180 }
3181 xmlTextReaderSetErrorHandler(reader, xml2_error_hdr, a);
3182
3183 while ((r = xmlTextReaderRead(reader)) == 1) {
3184 const char *name, *value;
3185 int type, empty;
3186
3187 type = xmlTextReaderNodeType(reader);
3188 name = (const char *)xmlTextReaderConstLocalName(reader);
3189 switch (type) {
3190 case XML_READER_TYPE_ELEMENT:
3191 empty = xmlTextReaderIsEmptyElement(reader);
3192 r = xml2_xmlattr_setup(a, &list, reader);
3193 if (r == ARCHIVE_OK)
3194 r = xml_start(a, name, &list);
3195 xmlattr_cleanup(&list);
3196 if (r != ARCHIVE_OK) {
3197 xmlFreeTextReader(reader);
3198 xmlCleanupParser();
3199 return (r);
3200 }
3201 if (empty)
3202 xml_end(a, name);
3203 break;
3204 case XML_READER_TYPE_END_ELEMENT:
3205 xml_end(a, name);
3206 break;
3207 case XML_READER_TYPE_TEXT:
3208 value = (const char *)xmlTextReaderConstValue(reader);
3209 xml_data(a, value, strlen(value));
3210 break;
3211 case XML_READER_TYPE_SIGNIFICANT_WHITESPACE:
3212 default:
3213 break;
3214 }
3215 if (r < 0)
3216 break;
3217 }
3218 xmlFreeTextReader(reader);
3219 xmlCleanupParser();
3220
3221 return ((r == 0)?ARCHIVE_OK:ARCHIVE_FATAL);
3222 }
3223
3224 #elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
3225
3226 static int
expat_xmlattr_setup(struct archive_read * a,struct xmlattr_list * list,const XML_Char ** atts)3227 expat_xmlattr_setup(struct archive_read *a,
3228 struct xmlattr_list *list, const XML_Char **atts)
3229 {
3230 struct xmlattr *attr;
3231 char *name, *value;
3232
3233 list->first = NULL;
3234 list->last = &(list->first);
3235 if (atts == NULL)
3236 return (ARCHIVE_OK);
3237 while (atts[0] != NULL && atts[1] != NULL) {
3238 attr = malloc(sizeof*(attr));
3239 name = strdup(atts[0]);
3240 value = strdup(atts[1]);
3241 if (attr == NULL || name == NULL || value == NULL) {
3242 archive_set_error(&a->archive, ENOMEM, "Out of memory");
3243 free(attr);
3244 free(name);
3245 free(value);
3246 return (ARCHIVE_FATAL);
3247 }
3248 attr->name = name;
3249 attr->value = value;
3250 attr->next = NULL;
3251 *list->last = attr;
3252 list->last = &(attr->next);
3253 atts += 2;
3254 }
3255 return (ARCHIVE_OK);
3256 }
3257
3258 static void
expat_start_cb(void * userData,const XML_Char * name,const XML_Char ** atts)3259 expat_start_cb(void *userData, const XML_Char *name, const XML_Char **atts)
3260 {
3261 struct expat_userData *ud = (struct expat_userData *)userData;
3262 struct archive_read *a = ud->archive;
3263 struct xmlattr_list list;
3264 int r;
3265
3266 if (ud->state != ARCHIVE_OK)
3267 return;
3268
3269 r = expat_xmlattr_setup(a, &list, atts);
3270 if (r == ARCHIVE_OK)
3271 r = xml_start(a, (const char *)name, &list);
3272 xmlattr_cleanup(&list);
3273 ud->state = r;
3274 }
3275
3276 static void
expat_end_cb(void * userData,const XML_Char * name)3277 expat_end_cb(void *userData, const XML_Char *name)
3278 {
3279 struct expat_userData *ud = (struct expat_userData *)userData;
3280
3281 xml_end(ud->archive, (const char *)name);
3282 }
3283
3284 static void
expat_data_cb(void * userData,const XML_Char * s,int len)3285 expat_data_cb(void *userData, const XML_Char *s, int len)
3286 {
3287 struct expat_userData *ud = (struct expat_userData *)userData;
3288
3289 xml_data(ud->archive, s, (size_t)len);
3290 }
3291
3292 static int
expat_read_toc(struct archive_read * a)3293 expat_read_toc(struct archive_read *a)
3294 {
3295 struct xar *xar;
3296 XML_Parser parser;
3297 struct expat_userData ud;
3298
3299 ud.state = ARCHIVE_OK;
3300 ud.archive = a;
3301
3302 xar = (struct xar *)(a->format->data);
3303
3304 /* Initialize XML Parser library. */
3305 parser = XML_ParserCreate(NULL);
3306 if (parser == NULL) {
3307 archive_set_error(&a->archive, ENOMEM,
3308 "Couldn't allocate memory for xml parser");
3309 return (ARCHIVE_FATAL);
3310 }
3311 XML_SetUserData(parser, &ud);
3312 XML_SetElementHandler(parser, expat_start_cb, expat_end_cb);
3313 XML_SetCharacterDataHandler(parser, expat_data_cb);
3314 xar->xmlsts = INIT;
3315
3316 while (xar->toc_remaining && ud.state == ARCHIVE_OK) {
3317 enum XML_Status xr;
3318 const void *d;
3319 size_t outbytes;
3320 size_t used;
3321 int r;
3322
3323 d = NULL;
3324 r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
3325 if (r != ARCHIVE_OK) {
3326 XML_ParserFree(parser);
3327 return (r);
3328 }
3329 xar->toc_remaining -= used;
3330 xar->offset += used;
3331 xar->toc_total += outbytes;
3332 PRINT_TOC(d, outbytes);
3333
3334 xr = XML_Parse(parser, d, (int)outbytes, xar->toc_remaining == 0);
3335 __archive_read_consume(a, used);
3336 if (xr == XML_STATUS_ERROR) {
3337 XML_ParserFree(parser);
3338 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
3339 "XML Parsing failed");
3340 return (ARCHIVE_FATAL);
3341 }
3342 }
3343 XML_ParserFree(parser);
3344 return (ud.state);
3345 }
3346 #endif /* defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) */
3347
3348 #endif /* Support xar format */
3349