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 1.44 2014/05/14 23:22:48 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#if defined(HAVE_LOCALE_H)
39#include <locale.h>
40#endif
41
42#include "cdf.h"
43#include "magic.h"
44
45#define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0)
46
47static const struct nv {
48 const char *pattern;

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70 { NULL, NULL, },
71};
72
73static const struct cv {
74 uint64_t clsid[2];
75 const char *mime;
76} clsid2mime[] = {
77 {
78 { 0x00000000000c1084LLU, 0x46000000000000c0LLU },
79 "x-msi",
80 },
81 { { 0, 0 },
82 NULL,
83 },
84}, clsid2desc[] = {
85 {
86 { 0x00000000000c1084LLU, 0x46000000000000c0LLU },
87 "MSI Installer",
88 },
89 { { 0, 0 },
90 NULL,
91 },
92};
93
94private const char *

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102 return NULL;
103}
104
105private const char *
106cdf_app_to_mime(const char *vbuf, const struct nv *nv)
107{
108 size_t i;
109 const char *rv = NULL;
110 char *old_lc_ctype;
111
112 old_lc_ctype = setlocale(LC_CTYPE, NULL);
113 assert(old_lc_ctype != NULL);
114 old_lc_ctype = strdup(old_lc_ctype);
115 assert(old_lc_ctype != NULL);
116 (void)setlocale(LC_CTYPE, "C");
117 for (i = 0; nv[i].pattern != NULL; i++)
118 if (strcasestr(vbuf, nv[i].pattern) != NULL) {
119 rv = nv[i].mime;
120 break;
121 }
122 (void)setlocale(LC_CTYPE, old_lc_ctype);
123 free(old_lc_ctype);
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_summary_info(struct magic_set *ms, const cdf_header_t *h,
245 const cdf_stream_t *sst, const cdf_directory_t *root_storage)
246{
247 cdf_summary_info_header_t si;
248 cdf_property_info_t *info;
249 size_t count;
250 int m;
251

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280 si.si_os_version & 0xff,
281 (uint32_t)si.si_os_version >> 8) == -1)
282 return -2;
283 break;
284 }
285 if (root_storage) {
286 str = cdf_clsid_to_mime(root_storage->d_storage_uuid,
287 clsid2desc);
288 if (str)
289 if (file_printf(ms, ", %s", str) == -1)
290 return -2;
291 }
292 }
293
294 m = cdf_file_property_info(ms, info, count, root_storage);
295 free(info);
296
297 return m == -1 ? -2 : m;
298}
299
300#ifdef notdef
301private char *
302format_clsid(char *buf, size_t len, const uint64_t uuid[2]) {
303 snprintf(buf, len, "%.8" PRIx64 "-%.4" PRIx64 "-%.4" PRIx64 "-%.4"
304 PRIx64 "-%.12" PRIx64,
305 (uuid[0] >> 32) & (uint64_t)0x000000000ffffffffLLU,
306 (uuid[0] >> 16) & (uint64_t)0x0000000000000ffffLLU,
307 (uuid[0] >> 0) & (uint64_t)0x0000000000000ffffLLU,
308 (uuid[1] >> 48) & (uint64_t)0x0000000000000ffffLLU,
309 (uuid[1] >> 0) & (uint64_t)0x0000fffffffffffffLLU);
310 return buf;
311}
312#endif
313
314protected int
315file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf,
316 size_t nbytes)
317{
318 cdf_info_t info;
319 cdf_header_t h;
320 cdf_sat_t sat, ssat;
321 cdf_stream_t sst, scn;
322 cdf_dir_t dir;
323 int i;
324 const char *expn = "";
325 const char *corrupt = "corrupt: ";
326
327 info.i_fd = fd;
328 info.i_buf = buf;
329 info.i_len = nbytes;
330 if (ms->flags & MAGIC_APPLE)
331 return 0;
332 if (cdf_read_header(&info, &h) == -1)
333 return 0;

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351 cdf_dump_sat("SSAT", &ssat, CDF_SHORT_SEC_SIZE(&h));
352#endif
353
354 if ((i = cdf_read_dir(&info, &h, &sat, &dir)) == -1) {
355 expn = "Can't read directory";
356 goto out2;
357 }
358
359 const cdf_directory_t *root_storage;
360 if ((i = cdf_read_short_stream(&info, &h, &sat, &dir, &sst,
361 &root_storage)) == -1) {
362 expn = "Cannot read short stream";
363 goto out3;
364 }
365#ifdef CDF_DEBUG
366 cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir);
367#endif

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399 scn.sst_len = 0;
400 scn.sst_dirlen = 0;
401 }
402 }
403
404 if ((i = cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir,
405 &scn)) == -1) {
406 if (errno == ESRCH) {
407 corrupt = expn;
408 expn = "No summary info";
409 } else {
410 expn = "Cannot read summary info";
411 }
412 goto out4;
413 }
414#ifdef CDF_DEBUG
415 cdf_dump_summary_info(&h, &scn);
416#endif

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459 if (NOTMIME(ms)) {
460 if (file_printf(ms,
461 "Composite Document File V2 Document") == -1)
462 return -1;
463 if (*expn)
464 if (file_printf(ms, ", %s%s", corrupt, expn) == -1)
465 return -1;
466 } else {
467 if (file_printf(ms, "application/CDFV2-corrupt") == -1)
468 return -1;
469 }
470 i = 1;
471 }
472 return i;
473}