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
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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;
49 const char *mime;
50} app2mime[] = {
51 { "Word", "msword", },
52 { "Excel", "vnd.ms-excel", },
53 { "Powerpoint", "vnd.ms-powerpoint", },
54 { "Crystal Reports", "x-rpt", },
55 { "Advanced Installer", "vnd.ms-msi", },
56 { "InstallShield", "vnd.ms-msi", },
57 { "Microsoft Patch Compiler", "vnd.ms-msi", },
58 { "NAnt", "vnd.ms-msi", },
59 { "Windows Installer", "vnd.ms-msi", },
60 { NULL, NULL, },
61}, name2mime[] = {
62 { "WordDocument", "msword", },
63 { "PowerPoint", "vnd.ms-powerpoint", },
64 { "DigitalSignature", "vnd.ms-msi", },
65 { NULL, NULL, },
66}, name2desc[] = {
67 { "WordDocument", "Microsoft Office Word",},
68 { "PowerPoint", "Microsoft PowerPoint", },
69 { "DigitalSignature", "Microsoft Installer", },
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 *
95cdf_clsid_to_mime(const uint64_t clsid[2], const struct cv *cv)
96{
97 size_t i;
98 for (i = 0; cv[i].mime != NULL; i++) {
99 if (clsid[0] == cv[i].clsid[0] && clsid[1] == cv[i].clsid[1])
100 return cv[i].mime;
101 }
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;
132 cdf_timestamp_t tp;
133 struct timespec ts;
134 char buf[64];
135 const char *str = NULL;
136 const char *s;
137 int len;
138
139 if (!NOTMIME(ms) && root_storage)
140 str = cdf_clsid_to_mime(root_storage->d_storage_uuid,
141 clsid2mime);
142
143 for (i = 0; i < count; i++) {
144 cdf_print_property_name(buf, sizeof(buf), info[i].pi_id);
145 switch (info[i].pi_type) {
146 case CDF_NULL:
147 break;
148 case CDF_SIGNED16:
149 if (NOTMIME(ms) && file_printf(ms, ", %s: %hd", buf,
150 info[i].pi_s16) == -1)
151 return -1;
152 break;
153 case CDF_SIGNED32:
154 if (NOTMIME(ms) && file_printf(ms, ", %s: %d", buf,
155 info[i].pi_s32) == -1)
156 return -1;
157 break;
158 case CDF_UNSIGNED32:
159 if (NOTMIME(ms) && file_printf(ms, ", %s: %u", buf,
160 info[i].pi_u32) == -1)
161 return -1;
162 break;
163 case CDF_FLOAT:
164 if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf,
165 info[i].pi_f) == -1)
166 return -1;
167 break;
168 case CDF_DOUBLE:
169 if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf,
170 info[i].pi_d) == -1)
171 return -1;
172 break;
173 case CDF_LENGTH32_STRING:
174 case CDF_LENGTH32_WSTRING:
175 len = info[i].pi_str.s_len;
176 if (len > 1) {
177 char vbuf[1024];
178 size_t j, k = 1;
179
180 if (info[i].pi_type == CDF_LENGTH32_WSTRING)
181 k++;
182 s = info[i].pi_str.s_buf;
183 for (j = 0; j < sizeof(vbuf) && len--; s += k) {
184 if (*s == '\0')
185 break;
186 if (isprint((unsigned char)*s))
187 vbuf[j++] = *s;
188 }
189 if (j == sizeof(vbuf))
190 --j;
191 vbuf[j] = '\0';
192 if (NOTMIME(ms)) {
193 if (vbuf[0]) {
194 if (file_printf(ms, ", %s: %s",
195 buf, vbuf) == -1)
196 return -1;
197 }
198 } else if (str == NULL && info[i].pi_id ==
199 CDF_PROPERTY_NAME_OF_APPLICATION) {
200 str = cdf_app_to_mime(vbuf, app2mime);
201 }
202 }
203 break;
204 case CDF_FILETIME:
205 tp = info[i].pi_tp;
206 if (tp != 0) {
207 char tbuf[64];
208 if (tp < 1000000000000000LL) {
209 cdf_print_elapsed_time(tbuf,
210 sizeof(tbuf), tp);
211 if (NOTMIME(ms) && file_printf(ms,
212 ", %s: %s", buf, tbuf) == -1)
213 return -1;
214 } else {
215 char *c, *ec;
216 cdf_timestamp_to_timespec(&ts, tp);
217 c = cdf_ctime(&ts.tv_sec, tbuf);
218 if (c != NULL &&
219 (ec = strchr(c, '\n')) != NULL)
220 *ec = '\0';
221
222 if (NOTMIME(ms) && file_printf(ms,
223 ", %s: %s", buf, c) == -1)
224 return -1;
225 }
226 }
227 break;
228 case CDF_CLIPBOARD:
229 break;
230 default:
231 return -1;
232 }
233 }
234 if (!NOTMIME(ms)) {
235 if (str == NULL)
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
252 if (cdf_unpack_summary_info(sst, h, &si, &info, &count) == -1)
253 return -1;
254
255 if (NOTMIME(ms)) {
256 const char *str;
257
258 if (file_printf(ms, "Composite Document File V2 Document")
259 == -1)
260 return -1;
261
262 if (file_printf(ms, ", %s Endian",
263 si.si_byte_order == 0xfffe ? "Little" : "Big") == -1)
264 return -2;
265 switch (si.si_os) {
266 case 2:
267 if (file_printf(ms, ", Os: Windows, Version %d.%d",
268 si.si_os_version & 0xff,
269 (uint32_t)si.si_os_version >> 8) == -1)
270 return -2;
271 break;
272 case 1:
273 if (file_printf(ms, ", Os: MacOS, Version %d.%d",
274 (uint32_t)si.si_os_version >> 8,
275 si.si_os_version & 0xff) == -1)
276 return -2;
277 break;
278 default:
279 if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os,
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;
334#ifdef CDF_DEBUG
335 cdf_dump_header(&h);
336#endif
337
338 if ((i = cdf_read_sat(&info, &h, &sat)) == -1) {
339 expn = "Can't read SAT";
340 goto out0;
341 }
342#ifdef CDF_DEBUG
343 cdf_dump_sat("SAT", &sat, CDF_SEC_SIZE(&h));
344#endif
345
346 if ((i = cdf_read_ssat(&info, &h, &sat, &ssat)) == -1) {
347 expn = "Can't read SSAT";
348 goto out1;
349 }
350#ifdef CDF_DEBUG
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
368#ifdef notdef
369 if (root_storage) {
370 if (NOTMIME(ms)) {
371 char clsbuf[128];
372 if (file_printf(ms, "CLSID %s, ",
373 format_clsid(clsbuf, sizeof(clsbuf),
374 root_storage->d_storage_uuid)) == -1)
375 return -1;
376 }
377 }
378#endif
379
380 if ((i = cdf_read_user_stream(&info, &h, &sat, &ssat, &sst, &dir,
381 "FileHeader", &scn)) != -1) {
382#define HWP5_SIGNATURE "HWP Document File"
383 if (scn.sst_dirlen >= sizeof(HWP5_SIGNATURE) - 1
384 && memcmp(scn.sst_tab, HWP5_SIGNATURE,
385 sizeof(HWP5_SIGNATURE) - 1) == 0) {
386 if (NOTMIME(ms)) {
387 if (file_printf(ms,
388 "Hangul (Korean) Word Processor File 5.x") == -1)
389 return -1;
390 } else {
391 if (file_printf(ms, "application/x-hwp") == -1)
392 return -1;
393 }
394 i = 1;
395 goto out5;
396 } else {
397 free(scn.sst_tab);
398 scn.sst_tab = NULL;
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
417 if ((i = cdf_file_summary_info(ms, &h, &scn, root_storage)) < 0)
418 expn = "Can't expand summary_info";
419
420 if (i == 0) {
421 const char *str = NULL;
422 cdf_directory_t *d;
423 char name[__arraycount(d->d_name)];
424 size_t j, k;
425
426 for (j = 0; str == NULL && j < dir.dir_len; j++) {
427 d = &dir.dir_tab[j];
428 for (k = 0; k < sizeof(name); k++)
429 name[k] = (char)cdf_tole2(d->d_name[k]);
430 str = cdf_app_to_mime(name,
431 NOTMIME(ms) ? name2desc : name2mime);
432 }
433 if (NOTMIME(ms)) {
434 if (str != NULL) {
435 if (file_printf(ms, "%s", str) == -1)
436 return -1;
437 i = 1;
438 }
439 } else {
440 if (str == NULL)
441 str = "vnd.ms-office";
442 if (file_printf(ms, "application/%s", str) == -1)
443 return -1;
444 i = 1;
445 }
446 }
447out5:
448 free(scn.sst_tab);
449out4:
450 free(sst.sst_tab);
451out3:
452 free(dir.dir_tab);
453out2:
454 free(ssat.sat_tab);
455out1:
456 free(sat.sat_tab);
457out0:
458 if (i == -1) {
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}