OpenBSD-4.6/kerberosV/src/lib/asn1/asn1_print.c
/*
* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 "der_locl.h"
#include <com_err.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <getarg.h>
#include <err.h>
RCSID("$KTH: asn1_print.c,v 1.16 2005/05/29 14:23:00 lha Exp $");
const char *class_names[] = {
"UNIV", /* 0 */
"APPL", /* 1 */
"CONTEXT", /* 2 */
"PRIVATE" /* 3 */
};
const char *type_names[] = {
"PRIM", /* 0 */
"CONS" /* 1 */
};
const char *tag_names[] = {
NULL, /* 0 */
NULL, /* 1 */
"Integer", /* 2 */
"BitString", /* 3 */
"OctetString", /* 4 */
"Null", /* 5 */
"ObjectID", /* 6 */
NULL, /* 7 */
NULL, /* 8 */
NULL, /* 9 */
"Enumerated", /* 10 */
NULL, /* 11 */
NULL, /* 12 */
NULL, /* 13 */
NULL, /* 14 */
NULL, /* 15 */
"Sequence", /* 16 */
"Set", /* 17 */
NULL, /* 18 */
"PrintableString", /* 19 */
NULL, /* 20 */
NULL, /* 21 */
"IA5String", /* 22 */
"UTCTime", /* 23 */
"GeneralizedTime", /* 24 */
NULL, /* 25 */
"VisibleString", /* 26 */
"GeneralString" /* 27 */
};
static int
loop (unsigned char *buf, size_t len, int indent)
{
while (len > 0) {
int ret;
Der_class class;
Der_type type;
int tag;
size_t sz;
size_t length;
int i;
ret = der_get_tag (buf, len, &class, &type, &tag, &sz);
if (ret)
errx (1, "der_get_tag: %s", error_message (ret));
if (sz > len)
errx (1, "unreasonable length (%u) > %u",
(unsigned)sz, (unsigned)len);
buf += sz;
len -= sz;
for (i = 0; i < indent; ++i)
printf (" ");
printf ("%s %s ", class_names[class], type_names[type]);
if (tag_names[tag])
printf ("%s = ", tag_names[tag]);
else
printf ("tag %d = ", tag);
ret = der_get_length (buf, len, &length, &sz);
if (ret)
errx (1, "der_get_tag: %s", error_message (ret));
buf += sz;
len -= sz;
if (class == ASN1_C_CONTEXT) {
printf ("[%d]\n", tag);
loop (buf, length, indent);
} else if (class == ASN1_C_UNIV) {
switch (tag) {
case UT_Sequence :
printf ("{\n");
loop (buf, length, indent + 2);
for (i = 0; i < indent; ++i)
printf (" ");
printf ("}\n");
break;
case UT_Integer : {
int val;
ret = der_get_int (buf, length, &val, NULL);
if (ret)
errx (1, "der_get_int: %s", error_message (ret));
printf ("integer %d\n", val);
break;
}
case UT_OctetString : {
heim_octet_string str;
int i;
unsigned char *uc;
ret = der_get_octet_string (buf, length, &str, NULL);
if (ret)
errx (1, "der_get_octet_string: %s", error_message (ret));
printf ("(length %lu)%s", (unsigned long)str.length,
str.length > 0 ? ", " : "");
uc = (unsigned char *)str.data;
length = str.length;
if (length > 16)
length = 16;
for (i = 0; i < length; ++i)
printf ("%02x", uc[i]);
printf ("\n");
free (str.data);
break;
}
case UT_GeneralizedTime :
case UT_IA5String:
case UT_UTF8String :
case UT_GeneralString : {
heim_general_string str;
ret = der_get_general_string (buf, length, &str, NULL);
if (ret)
errx (1, "der_get_general_string: %s",
error_message (ret));
printf ("\"%s\"\n", str);
free (str);
break;
}
case UT_OID: {
heim_oid o;
int i;
ret = der_get_oid(buf, length, &o, NULL);
if (ret)
errx (1, "der_get_oid: %s", error_message (ret));
for (i = 0; i < o.length ; i++)
printf("%d%s", o.components[i],
i < o.length - 1 ? "." : "");
printf("\n");
free_oid(&o);
break;
}
case UT_Enumerated: {
unsigned num;
ret = der_get_int (buf, length, &num, NULL);
if (ret)
errx (1, "der_get_enum: %s", error_message (ret));
printf("%u\n", num);
break;
}
default :
printf ("%lu bytes\n", (unsigned long)length);
break;
}
}
buf += length;
len -= length;
}
return 0;
}
static int
doit (const char *filename)
{
int fd = open (filename, O_RDONLY);
struct stat sb;
unsigned char *buf;
size_t len;
int ret;
if(fd < 0)
err (1, "opening %s for read", filename);
if (fstat (fd, &sb) < 0)
err (1, "stat %s", filename);
len = sb.st_size;
buf = malloc (len);
if (buf == NULL)
err (1, "malloc %u", (unsigned)len);
if (read (fd, buf, len) != len)
errx (1, "read failed");
close (fd);
ret = loop (buf, len, 0);
free (buf);
return ret;
}
static int version_flag;
static int help_flag;
struct getargs args[] = {
{ "version", 0, arg_flag, &version_flag },
{ "help", 0, arg_flag, &help_flag }
};
int num_args = sizeof(args) / sizeof(args[0]);
static void
usage(int code)
{
arg_printusage(args, num_args, NULL, "dump-file");
exit(code);
}
int
main(int argc, char **argv)
{
int optind = 0;
initialize_asn1_error_table_r (&et_list);
if(getarg(args, num_args, argc, argv, &optind))
usage(1);
if(help_flag)
usage(0);
if(version_flag) {
print_version(NULL);
exit(0);
}
argv += optind;
argc -= optind;
if (argc != 1)
usage (1);
return doit (argv[0]);
}