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-rw-r--r--src/readcdf.c328
1 files changed, 328 insertions, 0 deletions
diff --git a/src/readcdf.c b/src/readcdf.c
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--- /dev/null
+++ b/src/readcdf.c
@@ -0,0 +1,328 @@
+/*-
+ * 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 1.33 2012/06/20 21:52:36 christos Exp $")
+#endif
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+
+#include "cdf.h"
+#include "magic.h"
+
+#define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0)
+
+private int
+cdf_file_property_info(struct magic_set *ms, const cdf_property_info_t *info,
+ size_t count)
+{
+ size_t i;
+ cdf_timestamp_t tp;
+ struct timespec ts;
+ char buf[64];
+ const char *str = NULL;
+ const char *s;
+ int len;
+
+ 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--;
+ j++, 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 (info[i].pi_id ==
+ CDF_PROPERTY_NAME_OF_APPLICATION) {
+ if (strstr(vbuf, "Word"))
+ str = "msword";
+ else if (strstr(vbuf, "Excel"))
+ str = "vnd.ms-excel";
+ else if (strstr(vbuf, "Powerpoint"))
+ str = "vnd.ms-powerpoint";
+ else if (strstr(vbuf,
+ "Crystal Reports"))
+ str = "x-rpt";
+ }
+ }
+ 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 ((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)
+{
+ 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)) {
+ 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;
+ }
+ }
+
+ m = cdf_file_property_info(ms, info, count);
+ free(info);
+
+ return m == -1 ? -2 : m;
+}
+
+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;
+ }
+
+ if ((i = cdf_read_short_stream(&info, &h, &sat, &dir, &sst)) == -1) {
+ expn = "Cannot read short stream";
+ goto out3;
+ }
+#ifdef CDF_DEBUG
+ cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir);
+#endif
+
+ 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)) < 0)
+ expn = "Can't expand summary_info";
+ if (i == 0) {
+ const char *str = "vnd.ms-office";
+ cdf_directory_t *d;
+ char name[__arraycount(d->d_name)];
+ size_t j, k;
+ for (j = 0; 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]);
+ if (strstr(name, "WordDocument") != 0) {
+ str = "msword";
+ break;
+ }
+ if (strstr(name, "PowerPoint") != 0) {
+ str = "vnd.ms-powerpoint";
+ break;
+ }
+ }
+ if (file_printf(ms, "application/%s", str) == -1)
+ return -1;
+ i = 1;
+ }
+ 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 (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;
+}
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