#include "file.h"
#ifndef lint
FILE_RCSID("@(#)$File: readcdf.c,v 1.18 2009/05/06 20:48:22 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)) {
char vbuf[1024];
size_t j;
for (j = 0; j < sizeof(vbuf) && len--;
j++, s++) {
if (*s == '\0')
break;
if (isprint((unsigned char)*s))
vbuf[j] = *s;
}
if (j == sizeof(vbuf))
--j;
vbuf[j] = '\0';
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(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:
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)
return -1;
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_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 = "";
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) {
expn = "Cannot read summary info";
goto out4;
}
#ifdef CDF_DEBUG
cdf_dump_summary_info(&h, &scn);
#endif
if ((i = cdf_file_summary_info(ms, &scn)) == -1)
expn = "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);
out0:
if (i != 1) {
if (file_printf(ms, "CDF V2 Document") == -1)
return -1;
if (*expn)
if (file_printf(ms, ", corrupt: %s", expn) == -1)
return -1;
i = 1;
}
return i;
}