contrib/file/src/readcdf.c

   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 1.49 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
  44 static const struct nv {
  45         const char *pattern;
  46         const char *mime;
  47 } app2mime[] =  {
  48         { "Word",                       "msword",               },
  49         { "Excel",                      "vnd.ms-excel",         },
  50         { "Powerpoint",                 "vnd.ms-powerpoint",    },
  51         { "Crystal Reports",            "x-rpt",                },
  52         { "Advanced Installer",         "vnd.ms-msi",           },
  53         { "InstallShield",              "vnd.ms-msi",           },
  54         { "Microsoft Patch Compiler",   "vnd.ms-msi",           },
  55         { "NAnt",                       "vnd.ms-msi",           },
  56         { "Windows Installer",          "vnd.ms-msi",           },
  57         { NULL,                         NULL,                   },
  58 }, name2mime[] = {
  59         { "WordDocument",               "msword",               },
  60         { "PowerPoint",                 "vnd.ms-powerpoint",    },
  61         { "DigitalSignature",           "vnd.ms-msi",           },
  62         { NULL,                         NULL,                   },
  63 }, name2desc[] = {
  64         { "WordDocument",               "Microsoft Office Word",},
  65         { "PowerPoint",                 "Microsoft PowerPoint", },
  66         { "DigitalSignature",           "Microsoft Installer",  },
  67         { NULL,                         NULL,                   },
  68 };
  69
  70 static 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
  91 private const char *
  92 cdf_clsid_to_mime(const uint64_t clsid[2], const struct cv *cv)
  93 {
  94         size_t i;
  95         for (i = 0; cv[i].mime != NULL; i++) {
  96                 if (clsid[0] == cv[i].clsid[0] && clsid[1] == cv[i].clsid[1])
  97                         return cv[i].mime;
  98         }
  99         return NULL;
 100 }
 101
 102 private const char *
 103 cdf_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
 127 private int
 128 cdf_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
 243 private int
 244 cdf_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
 274 private int
 275 cdf_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
 283         if (cdf_unpack_summary_info(sst, h, &si, &info, &count) == -1)
 284                 return -1;
 285
 286         if (NOTMIME(ms)) {
 287                 const char *str;
 288
 289                 if (file_printf(ms, "Composite Document File V2 Document")
 290                     == -1)
 291                         return -1;
 292
 293                 if (file_printf(ms, ", %s Endian",
 294                     si.si_byte_order == 0xfffe ?  "Little" : "Big") == -1)
 295                         return -2;
 296                 switch (si.si_os) {
 297                 case 2:
 298                         if (file_printf(ms, ", Os: Windows, Version %d.%d",
 299                             si.si_os_version & 0xff,
 300                             (uint32_t)si.si_os_version >> 8) == -1)
 301                                 return -2;
 302                         break;
 303                 case 1:
 304                         if (file_printf(ms, ", Os: MacOS, Version %d.%d",
 305                             (uint32_t)si.si_os_version >> 8,
 306                             si.si_os_version & 0xff) == -1)
 307                                 return -2;
 308                         break;
 309                 default:
 310                         if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os,
 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
 333 private char *
 334 format_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
 346 protected int
 347 file_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;
 367 #ifdef CDF_DEBUG
 368         cdf_dump_header(&h);
 369 #endif
 370
 371         if ((i = cdf_read_sat(&info, &h, &sat)) == -1) {
 372                 expn = "Can't read SAT";
 373                 goto out0;
 374         }
 375 #ifdef CDF_DEBUG
 376         cdf_dump_sat("SAT", &sat, CDF_SEC_SIZE(&h));
 377 #endif
 378
 379         if ((i = cdf_read_ssat(&info, &h, &sat, &ssat)) == -1) {
 380                 expn = "Can't read SSAT";
 381                 goto out1;
 382         }
 383 #ifdef CDF_DEBUG
 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
 400 #ifdef notdef
 401         if (root_storage) {
 402                 if (NOTMIME(ms)) {
 403                         char clsbuf[128];
 404                         if (file_printf(ms, "CLSID %s, ",
 405                             format_clsid(clsbuf, sizeof(clsbuf),
 406                             root_storage->d_storage_uuid)) == -1)
 407                                 return -1;
 408                 }
 409         }
 410 #endif
 411
 412         if ((i = cdf_read_user_stream(&info, &h, &sat, &ssat, &sst, &dir,
 413             "FileHeader", &scn)) != -1) {
 414 #define HWP5_SIGNATURE "HWP Document File"
 415                 if (scn.sst_dirlen >= sizeof(HWP5_SIGNATURE) - 1
 416                     && memcmp(scn.sst_tab, HWP5_SIGNATURE,
 417                     sizeof(HWP5_SIGNATURE) - 1) == 0) {
 418                     if (NOTMIME(ms)) {
 419                         if (file_printf(ms,
 420                             "Hangul (Korean) Word Processor File 5.x") == -1)
 421                             return -1;
 422                     } else {
 423                         if (file_printf(ms, "application/x-hwp") == -1)
 424                             return -1;
 425                     }
 426                     i = 1;
 427                     goto out5;
 428                 } else {
 429                     free(scn.sst_tab);
 430                     scn.sst_tab = NULL;
 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
 465         if ((i = cdf_file_summary_info(ms, &h, &scn, root_storage)) < 0)
 466             expn = "Can't expand summary_info";
 467
 468         if (i == 0) {
 469                 const char *str = NULL;
 470                 cdf_directory_t *d;
 471                 char name[__arraycount(d->d_name)];
 472                 size_t j, k;
 473
 474                 for (j = 0; str == NULL && j < dir.dir_len; j++) {
 475                         d = &dir.dir_tab[j];
 476                         for (k = 0; k < sizeof(name); k++)
 477                                 name[k] = (char)cdf_tole2(d->d_name[k]);
 478                         str = cdf_app_to_mime(name,
 479                             NOTMIME(ms) ? name2desc : name2mime);
 480                 }
 481                 if (NOTMIME(ms)) {
 482                         if (str != NULL) {
 483                                 if (file_printf(ms, "%s", str) == -1)
 484                                         return -1;
 485                                 i = 1;
 486                         }
 487                 } else {
 488                         if (str == NULL)
 489                                 str = "vnd.ms-office";
 490                         if (file_printf(ms, "application/%s", str) == -1)
 491                                 return -1;
 492                         i = 1;
 493                 }
 494         }
 495 out5:
 496         free(scn.sst_tab);
 497 out4:
 498         free(sst.sst_tab);
 499 out3:
 500         free(dir.dir_tab);
 501 out2:
 502         free(ssat.sat_tab);
 503 out1:
 504         free(sat.sat_tab);
 505 out0:
 506         if (i == -1) {
 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 }