diff options
Diffstat (limited to 'src/readcdf.c')
| -rw-r--r-- | src/readcdf.c | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/src/readcdf.c b/src/readcdf.c new file mode 100644 index 0000000..7ced9ea --- /dev/null +++ b/src/readcdf.c @@ -0,0 +1,473 @@ +/*- + * Copyright (c) 2008 Christos Zoulas + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include "file.h" + +#ifndef lint +FILE_RCSID("@(#)$File: readcdf.c,v 1.44 2014/05/14 23:22:48 christos Exp $") +#endif + +#include <assert.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <time.h> +#include <ctype.h> +#if defined(HAVE_LOCALE_H) +#include <locale.h> +#endif + +#include "cdf.h" +#include "magic.h" + +#define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0) + +static const struct nv { + const char *pattern; + const char *mime; +} app2mime[] = { + { "Word", "msword", }, + { "Excel", "vnd.ms-excel", }, + { "Powerpoint", "vnd.ms-powerpoint", }, + { "Crystal Reports", "x-rpt", }, + { "Advanced Installer", "vnd.ms-msi", }, + { "InstallShield", "vnd.ms-msi", }, + { "Microsoft Patch Compiler", "vnd.ms-msi", }, + { "NAnt", "vnd.ms-msi", }, + { "Windows Installer", "vnd.ms-msi", }, + { NULL, NULL, }, +}, name2mime[] = { + { "WordDocument", "msword", }, + { "PowerPoint", "vnd.ms-powerpoint", }, + { "DigitalSignature", "vnd.ms-msi", }, + { NULL, NULL, }, +}, name2desc[] = { + { "WordDocument", "Microsoft Office Word",}, + { "PowerPoint", "Microsoft PowerPoint", }, + { "DigitalSignature", "Microsoft Installer", }, + { NULL, NULL, }, +}; + +static const struct cv { + uint64_t clsid[2]; + const char *mime; +} clsid2mime[] = { + { + { 0x00000000000c1084LLU, 0x46000000000000c0LLU }, + "x-msi", + }, + { { 0, 0 }, + NULL, + }, +}, clsid2desc[] = { + { + { 0x00000000000c1084LLU, 0x46000000000000c0LLU }, + "MSI Installer", + }, + { { 0, 0 }, + NULL, + }, +}; + +private const char * +cdf_clsid_to_mime(const uint64_t clsid[2], const struct cv *cv) +{ + size_t i; + for (i = 0; cv[i].mime != NULL; i++) { + if (clsid[0] == cv[i].clsid[0] && clsid[1] == cv[i].clsid[1]) + return cv[i].mime; + } + return NULL; +} + +private const char * +cdf_app_to_mime(const char *vbuf, const struct nv *nv) +{ + size_t i; + const char *rv = NULL; + char *old_lc_ctype; + + old_lc_ctype = setlocale(LC_CTYPE, NULL); + assert(old_lc_ctype != NULL); + old_lc_ctype = strdup(old_lc_ctype); + assert(old_lc_ctype != NULL); + (void)setlocale(LC_CTYPE, "C"); + for (i = 0; nv[i].pattern != NULL; i++) + if (strcasestr(vbuf, nv[i].pattern) != NULL) { + rv = nv[i].mime; + break; + } + (void)setlocale(LC_CTYPE, old_lc_ctype); + free(old_lc_ctype); + return rv; +} + +private int +cdf_file_property_info(struct magic_set *ms, const cdf_property_info_t *info, + size_t count, const cdf_directory_t *root_storage) +{ + size_t i; + cdf_timestamp_t tp; + struct timespec ts; + char buf[64]; + const char *str = NULL; + const char *s; + int len; + + if (!NOTMIME(ms) && root_storage) + str = cdf_clsid_to_mime(root_storage->d_storage_uuid, + clsid2mime); + + for (i = 0; i < count; i++) { + cdf_print_property_name(buf, sizeof(buf), info[i].pi_id); + switch (info[i].pi_type) { + case CDF_NULL: + break; + case CDF_SIGNED16: + if (NOTMIME(ms) && file_printf(ms, ", %s: %hd", buf, + info[i].pi_s16) == -1) + return -1; + break; + case CDF_SIGNED32: + if (NOTMIME(ms) && file_printf(ms, ", %s: %d", buf, + info[i].pi_s32) == -1) + return -1; + break; + case CDF_UNSIGNED32: + if (NOTMIME(ms) && file_printf(ms, ", %s: %u", buf, + info[i].pi_u32) == -1) + return -1; + break; + case CDF_FLOAT: + if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf, + info[i].pi_f) == -1) + return -1; + break; + case CDF_DOUBLE: + if (NOTMIME(ms) && file_printf(ms, ", %s: %g", buf, + info[i].pi_d) == -1) + return -1; + break; + case CDF_LENGTH32_STRING: + case CDF_LENGTH32_WSTRING: + len = info[i].pi_str.s_len; + if (len > 1) { + char vbuf[1024]; + size_t j, k = 1; + + if (info[i].pi_type == CDF_LENGTH32_WSTRING) + k++; + s = info[i].pi_str.s_buf; + for (j = 0; j < sizeof(vbuf) && len--; s += k) { + if (*s == '\0') + break; + if (isprint((unsigned char)*s)) + vbuf[j++] = *s; + } + if (j == sizeof(vbuf)) + --j; + vbuf[j] = '\0'; + if (NOTMIME(ms)) { + if (vbuf[0]) { + if (file_printf(ms, ", %s: %s", + buf, vbuf) == -1) + return -1; + } + } else if (str == NULL && info[i].pi_id == + CDF_PROPERTY_NAME_OF_APPLICATION) { + str = cdf_app_to_mime(vbuf, app2mime); + } + } + break; + case CDF_FILETIME: + tp = info[i].pi_tp; + if (tp != 0) { + char tbuf[64]; + if (tp < 1000000000000000LL) { + cdf_print_elapsed_time(tbuf, + sizeof(tbuf), tp); + if (NOTMIME(ms) && file_printf(ms, + ", %s: %s", buf, tbuf) == -1) + return -1; + } else { + char *c, *ec; + cdf_timestamp_to_timespec(&ts, tp); + c = cdf_ctime(&ts.tv_sec, tbuf); + if (c != NULL && + (ec = strchr(c, '\n')) != NULL) + *ec = '\0'; + + if (NOTMIME(ms) && file_printf(ms, + ", %s: %s", buf, c) == -1) + return -1; + } + } + break; + case CDF_CLIPBOARD: + break; + default: + return -1; + } + } + if (!NOTMIME(ms)) { + if (str == NULL) + return 0; + if (file_printf(ms, "application/%s", str) == -1) + return -1; + } + return 1; +} + +private int +cdf_file_summary_info(struct magic_set *ms, const cdf_header_t *h, + const cdf_stream_t *sst, const cdf_directory_t *root_storage) +{ + cdf_summary_info_header_t si; + cdf_property_info_t *info; + size_t count; + int m; + + if (cdf_unpack_summary_info(sst, h, &si, &info, &count) == -1) + return -1; + + if (NOTMIME(ms)) { + const char *str; + + if (file_printf(ms, "Composite Document File V2 Document") + == -1) + return -1; + + if (file_printf(ms, ", %s Endian", + si.si_byte_order == 0xfffe ? "Little" : "Big") == -1) + return -2; + switch (si.si_os) { + case 2: + if (file_printf(ms, ", Os: Windows, Version %d.%d", + si.si_os_version & 0xff, + (uint32_t)si.si_os_version >> 8) == -1) + return -2; + break; + case 1: + if (file_printf(ms, ", Os: MacOS, Version %d.%d", + (uint32_t)si.si_os_version >> 8, + si.si_os_version & 0xff) == -1) + return -2; + break; + default: + if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os, + si.si_os_version & 0xff, + (uint32_t)si.si_os_version >> 8) == -1) + return -2; + break; + } + if (root_storage) { + str = cdf_clsid_to_mime(root_storage->d_storage_uuid, + clsid2desc); + if (str) + if (file_printf(ms, ", %s", str) == -1) + return -2; + } + } + + m = cdf_file_property_info(ms, info, count, root_storage); + free(info); + + return m == -1 ? -2 : m; +} + +#ifdef notdef +private char * +format_clsid(char *buf, size_t len, const uint64_t uuid[2]) { + snprintf(buf, len, "%.8" PRIx64 "-%.4" PRIx64 "-%.4" PRIx64 "-%.4" + PRIx64 "-%.12" PRIx64, + (uuid[0] >> 32) & (uint64_t)0x000000000ffffffffLLU, + (uuid[0] >> 16) & (uint64_t)0x0000000000000ffffLLU, + (uuid[0] >> 0) & (uint64_t)0x0000000000000ffffLLU, + (uuid[1] >> 48) & (uint64_t)0x0000000000000ffffLLU, + (uuid[1] >> 0) & (uint64_t)0x0000fffffffffffffLLU); + return buf; +} +#endif + +protected int +file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf, + size_t nbytes) +{ + cdf_info_t info; + cdf_header_t h; + cdf_sat_t sat, ssat; + cdf_stream_t sst, scn; + cdf_dir_t dir; + int i; + const char *expn = ""; + const char *corrupt = "corrupt: "; + + info.i_fd = fd; + info.i_buf = buf; + info.i_len = nbytes; + if (ms->flags & MAGIC_APPLE) + return 0; + if (cdf_read_header(&info, &h) == -1) + return 0; +#ifdef CDF_DEBUG + cdf_dump_header(&h); +#endif + + if ((i = cdf_read_sat(&info, &h, &sat)) == -1) { + expn = "Can't read SAT"; + goto out0; + } +#ifdef CDF_DEBUG + cdf_dump_sat("SAT", &sat, CDF_SEC_SIZE(&h)); +#endif + + if ((i = cdf_read_ssat(&info, &h, &sat, &ssat)) == -1) { + expn = "Can't read SSAT"; + goto out1; + } +#ifdef CDF_DEBUG + cdf_dump_sat("SSAT", &ssat, CDF_SHORT_SEC_SIZE(&h)); +#endif + + if ((i = cdf_read_dir(&info, &h, &sat, &dir)) == -1) { + expn = "Can't read directory"; + goto out2; + } + + const cdf_directory_t *root_storage; + if ((i = cdf_read_short_stream(&info, &h, &sat, &dir, &sst, + &root_storage)) == -1) { + expn = "Cannot read short stream"; + goto out3; + } +#ifdef CDF_DEBUG + cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir); +#endif +#ifdef notdef + if (root_storage) { + if (NOTMIME(ms)) { + char clsbuf[128]; + if (file_printf(ms, "CLSID %s, ", + format_clsid(clsbuf, sizeof(clsbuf), + root_storage->d_storage_uuid)) == -1) + return -1; + } + } +#endif + + if ((i = cdf_read_user_stream(&info, &h, &sat, &ssat, &sst, &dir, + "FileHeader", &scn)) != -1) { +#define HWP5_SIGNATURE "HWP Document File" + if (scn.sst_dirlen >= sizeof(HWP5_SIGNATURE) - 1 + && memcmp(scn.sst_tab, HWP5_SIGNATURE, + sizeof(HWP5_SIGNATURE) - 1) == 0) { + if (NOTMIME(ms)) { + if (file_printf(ms, + "Hangul (Korean) Word Processor File 5.x") == -1) + return -1; + } else { + if (file_printf(ms, "application/x-hwp") == -1) + return -1; + } + i = 1; + goto out5; + } else { + free(scn.sst_tab); + scn.sst_tab = NULL; + scn.sst_len = 0; + scn.sst_dirlen = 0; + } + } + + if ((i = cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir, + &scn)) == -1) { + if (errno == ESRCH) { + corrupt = expn; + expn = "No summary info"; + } else { + expn = "Cannot read summary info"; + } + goto out4; + } +#ifdef CDF_DEBUG + cdf_dump_summary_info(&h, &scn); +#endif + if ((i = cdf_file_summary_info(ms, &h, &scn, root_storage)) < 0) + expn = "Can't expand summary_info"; + + if (i == 0) { + const char *str = NULL; + cdf_directory_t *d; + char name[__arraycount(d->d_name)]; + size_t j, k; + + for (j = 0; str == NULL && j < dir.dir_len; j++) { + d = &dir.dir_tab[j]; + for (k = 0; k < sizeof(name); k++) + name[k] = (char)cdf_tole2(d->d_name[k]); + str = cdf_app_to_mime(name, + NOTMIME(ms) ? name2desc : name2mime); + } + if (NOTMIME(ms)) { + if (str != NULL) { + if (file_printf(ms, "%s", str) == -1) + return -1; + i = 1; + } + } else { + if (str == NULL) + str = "vnd.ms-office"; + if (file_printf(ms, "application/%s", str) == -1) + return -1; + i = 1; + } + } +out5: + free(scn.sst_tab); +out4: + free(sst.sst_tab); +out3: + free(dir.dir_tab); +out2: + free(ssat.sat_tab); +out1: + free(sat.sat_tab); +out0: + if (i == -1) { + if (NOTMIME(ms)) { + if (file_printf(ms, + "Composite Document File V2 Document") == -1) + return -1; + if (*expn) + if (file_printf(ms, ", %s%s", corrupt, expn) == -1) + return -1; + } else { + if (file_printf(ms, "application/CDFV2-corrupt") == -1) + return -1; + } + i = 1; + } + return i; +} |
