1/*-
2 * Copyright (c) 2008 Christos Zoulas
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

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21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
25 */
26#include "file.h"
27
28#ifndef lint
29FILE_RCSID("@(#)$File: readcdf.c,v 1.49 2014/12/04 15:56:46 christos Exp $")
30#endif
31
32#include <assert.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <string.h>
36#include <time.h>
37#include <ctype.h>
38
39#include "cdf.h"
40#include "magic.h"
41
42#define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0)
43
44static const struct nv {
45 const char *pattern;

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67 { NULL, NULL, },
68};
69
70static const struct cv {
71 uint64_t clsid[2];
72 const char *mime;
73} clsid2mime[] = {
74 {
75 { 0x00000000000c1084ULL, 0x46000000000000c0ULL },
76 "x-msi",
77 },
78 { { 0, 0 },
79 NULL,
80 },
81}, clsid2desc[] = {
82 {
83 { 0x00000000000c1084ULL, 0x46000000000000c0ULL },
84 "MSI Installer",
85 },
86 { { 0, 0 },
87 NULL,
88 },
89};
90
91private const char *

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99 return NULL;
100}
101
102private const char *
103cdf_app_to_mime(const char *vbuf, const struct nv *nv)
104{
105 size_t i;
106 const char *rv = NULL;
107#ifdef USE_C_LOCALE
108 locale_t old_lc_ctype, c_lc_ctype;
109
110 c_lc_ctype = newlocale(LC_CTYPE_MASK, "C", 0);
111 assert(c_lc_ctype != NULL);
112 old_lc_ctype = uselocale(c_lc_ctype);
113 assert(old_lc_ctype != NULL);
114#endif
115 for (i = 0; nv[i].pattern != NULL; i++)
116 if (strcasestr(vbuf, nv[i].pattern) != NULL) {
117 rv = nv[i].mime;
118 break;
119 }
120#ifdef USE_C_LOCALE
121 (void)uselocale(old_lc_ctype);
122 freelocale(c_lc_ctype);
123#endif
124 return rv;
125}
126
127private int
128cdf_file_property_info(struct magic_set *ms, const cdf_property_info_t *info,
129 size_t count, const cdf_directory_t *root_storage)
130{
131 size_t i;

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236 return 0;
237 if (file_printf(ms, "application/%s", str) == -1)
238 return -1;
239 }
240 return 1;
241}
242
243private int
244cdf_file_catalog(struct magic_set *ms, const cdf_header_t *h,
245 const cdf_stream_t *sst)
246{
247 cdf_catalog_t *cat;
248 size_t i;
249 char buf[256];
250 cdf_catalog_entry_t *ce;
251
252 if (NOTMIME(ms)) {
253 if (file_printf(ms, "Microsoft Thumbs.db [") == -1)
254 return -1;
255 if (cdf_unpack_catalog(h, sst, &cat) == -1)
256 return -1;
257 ce = cat->cat_e;
258 /* skip first entry since it has a , or paren */
259 for (i = 1; i < cat->cat_num; i++)
260 if (file_printf(ms, "%s%s",
261 cdf_u16tos8(buf, ce[i].ce_namlen, ce[i].ce_name),
262 i == cat->cat_num - 1 ? "]" : ", ") == -1) {
263 free(cat);
264 return -1;
265 }
266 free(cat);
267 } else {
268 if (file_printf(ms, "application/CDFV2") == -1)
269 return -1;
270 }
271 return 1;
272}
273
274private int
275cdf_file_summary_info(struct magic_set *ms, const cdf_header_t *h,
276 const cdf_stream_t *sst, const cdf_directory_t *root_storage)
277{
278 cdf_summary_info_header_t si;
279 cdf_property_info_t *info;
280 size_t count;
281 int m;
282

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311 si.si_os_version & 0xff,
312 (uint32_t)si.si_os_version >> 8) == -1)
313 return -2;
314 break;
315 }
316 if (root_storage) {
317 str = cdf_clsid_to_mime(root_storage->d_storage_uuid,
318 clsid2desc);
319 if (str) {
320 if (file_printf(ms, ", %s", str) == -1)
321 return -2;
322 }
323 }
324 }
325
326 m = cdf_file_property_info(ms, info, count, root_storage);
327 free(info);
328
329 return m == -1 ? -2 : m;
330}
331
332#ifdef notdef
333private char *
334format_clsid(char *buf, size_t len, const uint64_t uuid[2]) {
335 snprintf(buf, len, "%.8" PRIx64 "-%.4" PRIx64 "-%.4" PRIx64 "-%.4"
336 PRIx64 "-%.12" PRIx64,
337 (uuid[0] >> 32) & (uint64_t)0x000000000ffffffffULL,
338 (uuid[0] >> 16) & (uint64_t)0x0000000000000ffffULL,
339 (uuid[0] >> 0) & (uint64_t)0x0000000000000ffffULL,
340 (uuid[1] >> 48) & (uint64_t)0x0000000000000ffffULL,
341 (uuid[1] >> 0) & (uint64_t)0x0000fffffffffffffULL);
342 return buf;
343}
344#endif
345
346protected int
347file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf,
348 size_t nbytes)
349{
350 cdf_info_t info;
351 cdf_header_t h;
352 cdf_sat_t sat, ssat;
353 cdf_stream_t sst, scn;
354 cdf_dir_t dir;
355 int i;
356 const char *expn = "";
357 const char *corrupt = "corrupt: ";
358 const cdf_directory_t *root_storage;
359
360 info.i_fd = fd;
361 info.i_buf = buf;
362 info.i_len = nbytes;
363 if (ms->flags & MAGIC_APPLE)
364 return 0;
365 if (cdf_read_header(&info, &h) == -1)
366 return 0;

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384 cdf_dump_sat("SSAT", &ssat, CDF_SHORT_SEC_SIZE(&h));
385#endif
386
387 if ((i = cdf_read_dir(&info, &h, &sat, &dir)) == -1) {
388 expn = "Can't read directory";
389 goto out2;
390 }
391
392 if ((i = cdf_read_short_stream(&info, &h, &sat, &dir, &sst,
393 &root_storage)) == -1) {
394 expn = "Cannot read short stream";
395 goto out3;
396 }
397#ifdef CDF_DEBUG
398 cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir);
399#endif

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431 scn.sst_len = 0;
432 scn.sst_dirlen = 0;
433 }
434 }
435
436 if ((i = cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir,
437 &scn)) == -1) {
438 if (errno == ESRCH) {
439 if ((i = cdf_read_catalog(&info, &h, &sat, &ssat, &sst,
440 &dir, &scn)) == -1) {
441 corrupt = expn;
442 if ((i = cdf_read_encrypted_package(&info, &h,
443 &sat, &ssat, &sst, &dir, &scn)) == -1)
444 expn = "No summary info";
445 else {
446 expn = "Encrypted";
447 i = -1;
448 }
449 goto out4;
450 }
451#ifdef CDF_DEBUG
452 cdf_dump_catalog(&h, &scn);
453#endif
454 if ((i = cdf_file_catalog(ms, &h, &scn))
455 < 0)
456 expn = "Can't expand catalog";
457 } else {
458 expn = "Cannot read summary info";
459 }
460 goto out4;
461 }
462#ifdef CDF_DEBUG
463 cdf_dump_summary_info(&h, &scn);
464#endif

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507 if (NOTMIME(ms)) {
508 if (file_printf(ms,
509 "Composite Document File V2 Document") == -1)
510 return -1;
511 if (*expn)
512 if (file_printf(ms, ", %s%s", corrupt, expn) == -1)
513 return -1;
514 } else {
515 if (file_printf(ms, "application/CDFV2-%s",
516 *corrupt ? "corrupt" : "encrypted") == -1)
517 return -1;
518 }
519 i = 1;
520 }
521 return i;
522}