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
29 FILE_RCSID("@(#)$File: readcdf.c,v 1.33 2012/06/20 21:52:36 christos Exp $")
30 #endif
31
32 #include <stdlib.h>
33 #ifdef PHP_WIN32
34 #include "win32/unistd.h"
35 #else
36 #include <unistd.h>
37 #endif
38 #include <string.h>
39 #include <time.h>
40 #include <ctype.h>
41
42 #include "cdf.h"
43 #include "magic.h"
44
45 #define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0)
46
47 private int
cdf_file_property_info(struct magic_set * ms,const cdf_property_info_t * info,size_t count)48 cdf_file_property_info(struct magic_set *ms, const cdf_property_info_t *info,
49 size_t count)
50 {
51 size_t i;
52 cdf_timestamp_t tp;
53 struct timeval ts;
54 char buf[64];
55 const char *str = NULL;
56 const char *s;
57 int len;
58
59 memset(&ts, 0, sizeof(ts));
60
61 for (i = 0; i < count; i++) {
62 cdf_print_property_name(buf, sizeof(buf), info[i].pi_id);
63 switch (info[i].pi_type) {
64 case CDF_NULL:
65 break;
66 case CDF_SIGNED16:
67 if (NOTMIME(ms) && file_printf(ms, ", %s: %hd", buf,
68 info[i].pi_s16) == -1)
69 return -1;
70 break;
71 case CDF_SIGNED32:
72 if (NOTMIME(ms) && file_printf(ms, ", %s: %d", buf,
73 info[i].pi_s32) == -1)
74 return -1;
75 break;
76 case CDF_UNSIGNED32:
77 if (NOTMIME(ms) && file_printf(ms, ", %s: %u", buf,
78 info[i].pi_u32) == -1)
79 return -1;
80 break;
81 case CDF_FLOAT:
82 if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf,
83 info[i].pi_f) == -1)
84 return -1;
85 break;
86 case CDF_DOUBLE:
87 if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf,
88 info[i].pi_d) == -1)
89 return -1;
90 break;
91 case CDF_LENGTH32_STRING:
92 case CDF_LENGTH32_WSTRING:
93 len = info[i].pi_str.s_len;
94 if (len > 1) {
95 char vbuf[1024];
96 size_t j, k = 1;
97
98 if (info[i].pi_type == CDF_LENGTH32_WSTRING)
99 k++;
100 s = info[i].pi_str.s_buf;
101 for (j = 0; j < sizeof(vbuf) && len--;
102 j++, s += k) {
103 if (*s == '\0')
104 break;
105 if (isprint((unsigned char)*s))
106 vbuf[j] = *s;
107 }
108 if (j == sizeof(vbuf))
109 --j;
110 vbuf[j] = '\0';
111 if (NOTMIME(ms)) {
112 if (vbuf[0]) {
113 if (file_printf(ms, ", %s: %s",
114 buf, vbuf) == -1)
115 return -1;
116 }
117 } else if (info[i].pi_id ==
118 CDF_PROPERTY_NAME_OF_APPLICATION) {
119 if (strstr(vbuf, "Word"))
120 str = "msword";
121 else if (strstr(vbuf, "Excel"))
122 str = "vnd.ms-excel";
123 else if (strstr(vbuf, "Powerpoint"))
124 str = "vnd.ms-powerpoint";
125 else if (strstr(vbuf,
126 "Crystal Reports"))
127 str = "x-rpt";
128 }
129 }
130 break;
131 case CDF_FILETIME:
132 tp = info[i].pi_tp;
133 if (tp != 0) {
134 char tbuf[64];
135 #if defined(PHP_WIN32) && _MSC_VER <= 1500
136 if (tp < 1000000000000000i64) {
137 #else
138 if (tp < 1000000000000000LL) {
139 #endif
140 cdf_print_elapsed_time(tbuf,
141 sizeof(tbuf), tp);
142 if (NOTMIME(ms) && file_printf(ms,
143 ", %s: %s", buf, tbuf) == -1)
144 return -1;
145 } else {
146 char *c, *ec;
147 const time_t sec = ts.tv_sec;
148 if (cdf_timestamp_to_timespec(&ts, tp) == -1) {
149 return -1;
150 }
151 c = cdf_ctime(&sec, tbuf);
152 if (c != NULL &&
153 (ec = strchr(c, '\n')) != NULL)
154 *ec = '\0';
155
156 if (NOTMIME(ms) && file_printf(ms,
157 ", %s: %s", buf, c) == -1)
158 return -1;
159 }
160 }
161 break;
162 case CDF_CLIPBOARD:
163 break;
164 default:
165 return -1;
166 }
167 }
168 if (!NOTMIME(ms)) {
169 if (str == NULL)
170 return 0;
171 if (file_printf(ms, "application/%s", str) == -1)
172 return -1;
173 }
174 return 1;
175 }
176
177 private int
178 cdf_file_summary_info(struct magic_set *ms, const cdf_header_t *h,
179 const cdf_stream_t *sst)
180 {
181 cdf_summary_info_header_t si;
182 cdf_property_info_t *info;
183 size_t count;
184 int m;
185
186 if (cdf_unpack_summary_info(sst, h, &si, &info, &count) == -1)
187 return -1;
188
189 if (NOTMIME(ms)) {
190 if (file_printf(ms, "Composite Document File V2 Document")
191 == -1)
192 return -1;
193
194 if (file_printf(ms, ", %s Endian",
195 si.si_byte_order == 0xfffe ? "Little" : "Big") == -1)
196 return -2;
197 switch (si.si_os) {
198 case 2:
199 if (file_printf(ms, ", Os: Windows, Version %d.%d",
200 si.si_os_version & 0xff,
201 (uint32_t)si.si_os_version >> 8) == -1)
202 return -2;
203 break;
204 case 1:
205 if (file_printf(ms, ", Os: MacOS, Version %d.%d",
206 (uint32_t)si.si_os_version >> 8,
207 si.si_os_version & 0xff) == -1)
208 return -2;
209 break;
210 default:
211 if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os,
212 si.si_os_version & 0xff,
213 (uint32_t)si.si_os_version >> 8) == -1)
214 return -2;
215 break;
216 }
217 }
218
219 m = cdf_file_property_info(ms, info, count);
220 free(info);
221
222 return m == -1 ? -2 : m;
223 }
224
225 protected int
226 file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf,
227 size_t nbytes)
228 {
229 cdf_info_t info;
230 cdf_header_t h;
231 cdf_sat_t sat, ssat;
232 cdf_stream_t sst, scn;
233 cdf_dir_t dir;
234 int i;
235 const char *expn = "";
236 const char *corrupt = "corrupt: ";
237
238 info.i_fd = fd;
239 info.i_buf = buf;
240 info.i_len = nbytes;
241 if (ms->flags & MAGIC_APPLE)
242 return 0;
243 if (cdf_read_header(&info, &h) == -1)
244 return 0;
245 #ifdef CDF_DEBUG
246 cdf_dump_header(&h);
247 #endif
248
249 if ((i = cdf_read_sat(&info, &h, &sat)) == -1) {
250 expn = "Can't read SAT";
251 goto out0;
252 }
253 #ifdef CDF_DEBUG
254 cdf_dump_sat("SAT", &sat, CDF_SEC_SIZE(&h));
255 #endif
256
257 if ((i = cdf_read_ssat(&info, &h, &sat, &ssat)) == -1) {
258 expn = "Can't read SSAT";
259 goto out1;
260 }
261 #ifdef CDF_DEBUG
262 cdf_dump_sat("SSAT", &ssat, CDF_SHORT_SEC_SIZE(&h));
263 #endif
264
265 if ((i = cdf_read_dir(&info, &h, &sat, &dir)) == -1) {
266 expn = "Can't read directory";
267 goto out2;
268 }
269
270 if ((i = cdf_read_short_stream(&info, &h, &sat, &dir, &sst)) == -1) {
271 expn = "Cannot read short stream";
272 goto out3;
273 }
274 #ifdef CDF_DEBUG
275 cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir);
276 #endif
277
278 if ((i = cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir,
279 &scn)) == -1) {
280 if (errno == ESRCH) {
281 corrupt = expn;
282 expn = "No summary info";
283 } else {
284 expn = "Cannot read summary info";
285 }
286 goto out4;
287 }
288 #ifdef CDF_DEBUG
289 cdf_dump_summary_info(&h, &scn);
290 #endif
291 if ((i = cdf_file_summary_info(ms, &h, &scn)) < 0)
292 expn = "Can't expand summary_info";
293 if (i == 0) {
294 const char *str = "vnd.ms-office";
295 cdf_directory_t *d;
296 char name[__arraycount(d->d_name)];
297 size_t j, k;
298 for (j = 0; j < dir.dir_len; j++) {
299 d = &dir.dir_tab[j];
300 for (k = 0; k < sizeof(name); k++)
301 name[k] = (char)cdf_tole2(d->d_name[k]);
302 if (strstr(name, "WordDocument") != 0) {
303 str = "msword";
304 break;
305 }
306 if (strstr(name, "PowerPoint") != 0) {
307 str = "vnd.ms-powerpoint";
308 break;
309 }
310 }
311 if (file_printf(ms, "application/%s", str) == -1)
312 return -1;
313 i = 1;
314 }
315 free(scn.sst_tab);
316 out4:
317 free(sst.sst_tab);
318 out3:
319 free(dir.dir_tab);
320 out2:
321 free(ssat.sat_tab);
322 out1:
323 free(sat.sat_tab);
324 out0:
325 if (i != 1) {
326 if (i == -1) {
327 if (NOTMIME(ms)) {
328 if (file_printf(ms,
329 "Composite Document File V2 Document") == -1)
330 return -1;
331 if (*expn)
332 if (file_printf(ms, ", %s%s", corrupt, expn) == -1)
333 return -1;
334 } else {
335 if (file_printf(ms, "application/CDFV2-corrupt") == -1)
336 return -1;
337 }
338 }
339 i = 1;
340 }
341 return i;
342 }
343
