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/*-
* 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 1.11 2009/02/03 20:27:51 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 = "vnd.ms-office";
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_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_LENGTH32_STRING:
len = info[i].pi_str.s_len;
if (len > 1) {
s = info[i].pi_str.s_buf;
if (NOTMIME(ms)) {
if (file_printf(ms, ", %s: %.*s", buf,
len, s) == -1)
return -1;
} else if (info[i].pi_id ==
CDF_PROPERTY_NAME_OF_APPLICATION) {
if (strstr(s, "Word"))
str = "msword";
else if (strstr(s, "Excel"))
str = "vnd.ms-excel";
else if (strstr(s, "Powerpoint"))
str = "vnd.ms-powerpoint";
}
}
break;
case CDF_FILETIME:
tp = info[i].pi_tp;
if (tp != 0) {
if (tp < 1000000000000000LL) {
char tbuf[64];
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 = ctime(&ts.tv_sec);
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:
file_error(ms, 0, "Internal parsing error");
return -1;
}
}
if (!NOTMIME(ms)) {
if (file_printf(ms, "application/%s", str) == -1)
return -1;
}
return 1;
}
private int
cdf_file_summary_info(struct magic_set *ms, 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, &si, &info, &count) == -1) {
if (si.si_byte_order != 0xfffe)
return 0;
else
return -1;
}
if (si.si_byte_order != 0xfffe)
return 0;
if (NOTMIME(ms)) {
if (file_printf(ms, "CDF V2 Document") == -1)
return -1;
if (file_printf(ms, ", %s Endian",
si.si_byte_order == 0xfffe ? "Little" : "Big") == -1)
return -1;
switch (si.si_os) {
case 2:
if (file_printf(ms, ", Os: Windows, Version %d.%d",
si.si_os_version & 0xff, si.si_os_version >> 8)
== -1)
return -1;
break;
case 1:
if (file_printf(ms, ", Os: MacOS, Version %d.%d",
si.si_os_version >> 8, si.si_os_version & 0xff)
== -1)
return -1;
break;
default:
if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os,
si.si_os_version & 0xff, si.si_os_version >> 8)
== -1)
return -1;
break;
}
}
m = cdf_file_property_info(ms, info, count);
free(info);
return m;
}
protected int
file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf,
size_t nbytes)
{
cdf_header_t h;
cdf_sat_t sat, ssat;
cdf_stream_t sst, scn;
cdf_dir_t dir;
int i;
(void)&nbytes;
(void)&buf;
if (ms->flags & MAGIC_APPLE)
return 0;
if (cdf_read_header(fd, &h) == -1)
return 0;
#ifdef CDF_DEBUG
cdf_dump_header(&h);
#endif
if (cdf_read_sat(fd, &h, &sat) == -1) {
file_error(ms, errno, "Can't read SAT");
return -1;
}
#ifdef CDF_DEBUG
cdf_dump_sat("SAT", &h, &sat);
#endif
if ((i = cdf_read_ssat(fd, &h, &sat, &ssat)) == -1) {
file_error(ms, errno, "Can't read SAT");
goto out1;
}
#ifdef CDF_DEBUG
cdf_dump_sat("SSAT", &h, &ssat);
#endif
if ((i = cdf_read_dir(fd, &h, &sat, &dir)) == -1) {
file_error(ms, errno, "Can't read directory");
goto out2;
}
if ((i = cdf_read_short_stream(fd, &h, &sat, &dir, &sst)) == -1) {
file_error(ms, errno, "Cannot read short stream");
goto out3;
}
#ifdef CDF_DEBUG
cdf_dump_dir(fd, &h, &sat, &ssat, &sst, &dir);
#endif
if ((i = cdf_read_summary_info(fd, &h, &sat, &ssat, &sst, &dir, &scn))
== -1) {
/* Some files don't have summary info! */
#ifdef notyet
file_error(ms, errno, "Can't read summary_info");
#else
i = 0;
#endif
goto out4;
}
#ifdef CDF_DEBUG
cdf_dump_summary_info(&h, &scn);
#endif
if ((i = cdf_file_summary_info(ms, &scn)) == -1)
file_error(ms, errno, "Can't expand summary_info");
free(scn.sst_tab);
out4:
free(sst.sst_tab);
out3:
free(dir.dir_tab);
out2:
free(ssat.sat_tab);
out1:
free(sat.sat_tab);
return i;
}
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