2003-11-10 08:53:38 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2001-2003
|
|
|
|
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Author: Harti Brandt <harti@freebsd.org>
|
2004-08-06 13:38:30 +00:00
|
|
|
*
|
|
|
|
* 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.
|
2003-11-10 08:53:38 +00:00
|
|
|
* 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.
|
2004-08-06 13:38:30 +00:00
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
|
2003-11-10 08:53:38 +00:00
|
|
|
*
|
2006-02-27 16:16:18 +00:00
|
|
|
* $Begemot: bsnmp/lib/asn1.c,v 1.31 2005/10/06 07:14:58 brandt_h Exp $
|
2003-11-10 08:53:38 +00:00
|
|
|
*
|
|
|
|
* ASN.1 for SNMP.
|
|
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdarg.h>
|
|
|
|
#include <string.h>
|
2005-10-04 14:41:06 +00:00
|
|
|
#ifdef HAVE_STDINT_H
|
2004-08-06 13:38:30 +00:00
|
|
|
#include <stdint.h>
|
2005-10-04 14:41:06 +00:00
|
|
|
#elif defined(HAVE_INTTYPES_H)
|
|
|
|
#include <inttypes.h>
|
|
|
|
#endif
|
2003-11-10 08:53:38 +00:00
|
|
|
#include <assert.h>
|
|
|
|
|
2006-02-27 16:16:18 +00:00
|
|
|
#include "support.h"
|
|
|
|
#include "asn1.h"
|
2005-10-05 15:19:56 +00:00
|
|
|
|
2003-11-10 08:53:38 +00:00
|
|
|
static void asn_error_func(const struct asn_buf *, const char *, ...);
|
|
|
|
|
|
|
|
void (*asn_error)(const struct asn_buf *, const char *, ...) = asn_error_func;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read the next header. This reads the tag (note, that only single
|
|
|
|
* byte tags are supported for now) and the length field. The length field
|
|
|
|
* is restricted to a 32-bit value.
|
|
|
|
* All errors of this function stop the decoding.
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_header(struct asn_buf *b, u_char *type, asn_len_t *len)
|
|
|
|
{
|
|
|
|
u_int length;
|
|
|
|
|
|
|
|
if (b->asn_len == 0) {
|
|
|
|
asn_error(b, "no identifier for header");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
*type = *b->asn_cptr;
|
|
|
|
if ((*type & ASN_TYPE_MASK) > 0x30) {
|
|
|
|
asn_error(b, "types > 0x30 not supported (%u)",
|
|
|
|
*type & ASN_TYPE_MASK);
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
}
|
|
|
|
b->asn_cptr++;
|
|
|
|
b->asn_len--;
|
|
|
|
if (b->asn_len == 0) {
|
|
|
|
asn_error(b, "no length field");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (*b->asn_cptr & 0x80) {
|
|
|
|
length = *b->asn_cptr++ & 0x7f;
|
|
|
|
b->asn_len--;
|
|
|
|
if (length == 0) {
|
|
|
|
asn_error(b, "indefinite length not supported");
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
}
|
|
|
|
if (length > ASN_MAXLENLEN) {
|
|
|
|
asn_error(b, "long length too long (%u)", length);
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
}
|
|
|
|
if (length > b->asn_len) {
|
|
|
|
asn_error(b, "long length truncated");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
*len = 0;
|
|
|
|
while (length--) {
|
|
|
|
*len = (*len << 8) | *b->asn_cptr++;
|
|
|
|
b->asn_len--;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
*len = *b->asn_cptr++;
|
|
|
|
b->asn_len--;
|
|
|
|
}
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write a length field (restricted to values < 2^32-1) and return the
|
|
|
|
* number of bytes this field takes. If ptr is NULL, the length is computed
|
|
|
|
* but nothing is written. If the length would be too large return 0.
|
|
|
|
*/
|
|
|
|
static u_int
|
|
|
|
asn_put_len(u_char *ptr, asn_len_t len)
|
|
|
|
{
|
|
|
|
u_int lenlen, lenlen1;
|
|
|
|
asn_len_t tmp;
|
|
|
|
|
|
|
|
if (len > ASN_MAXLEN) {
|
|
|
|
asn_error(NULL, "encoding length too long: (%u)", len);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (len <= 127) {
|
|
|
|
if (ptr)
|
|
|
|
*ptr++ = (u_char)len;
|
|
|
|
return (1);
|
|
|
|
} else {
|
|
|
|
lenlen = 0;
|
|
|
|
/* compute number of bytes for value (is at least 1) */
|
|
|
|
for (tmp = len; tmp != 0; tmp >>= 8)
|
|
|
|
lenlen++;
|
|
|
|
if (ptr != NULL) {
|
|
|
|
*ptr++ = (u_char)lenlen | 0x80;
|
|
|
|
lenlen1 = lenlen;
|
|
|
|
while (lenlen1-- > 0) {
|
|
|
|
ptr[lenlen1] = len & 0xff;
|
|
|
|
len >>= 8;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (lenlen + 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write a header (tag and length fields).
|
|
|
|
* Tags are restricted to one byte tags (value <= 0x30) and the
|
|
|
|
* lenght field to 16-bit. All errors stop the encoding.
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_put_header(struct asn_buf *b, u_char type, asn_len_t len)
|
|
|
|
{
|
|
|
|
u_int lenlen;
|
|
|
|
|
|
|
|
/* tag field */
|
|
|
|
if ((type & ASN_TYPE_MASK) > 0x30) {
|
|
|
|
asn_error(NULL, "types > 0x30 not supported (%u)",
|
|
|
|
type & ASN_TYPE_MASK);
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
}
|
|
|
|
if (b->asn_len == 0)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
*b->asn_ptr++ = type;
|
|
|
|
b->asn_len--;
|
|
|
|
|
|
|
|
/* length field */
|
|
|
|
if ((lenlen = asn_put_len(NULL, len)) == 0)
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
if (b->asn_len < lenlen)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
(void)asn_put_len(b->asn_ptr, len);
|
|
|
|
b->asn_ptr += lenlen;
|
|
|
|
b->asn_len -= lenlen;
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This constructs a temporary sequence header with space for the maximum
|
|
|
|
* length field (three byte). Set the pointer that ptr points to to the
|
|
|
|
* start of the encoded header. This is used for a later call to
|
|
|
|
* asn_commit_header which will fix-up the length field and move the
|
|
|
|
* value if needed. All errors should stop the encoding.
|
|
|
|
*/
|
|
|
|
#define TEMP_LEN (1 + ASN_MAXLENLEN + 1)
|
|
|
|
enum asn_err
|
|
|
|
asn_put_temp_header(struct asn_buf *b, u_char type, u_char **ptr)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (b->asn_len < TEMP_LEN)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
*ptr = b->asn_ptr;
|
|
|
|
if ((ret = asn_put_header(b, type, ASN_MAXLEN)) == ASN_ERR_OK)
|
|
|
|
assert(b->asn_ptr == *ptr + TEMP_LEN);
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
enum asn_err
|
2010-12-08 13:51:38 +00:00
|
|
|
asn_commit_header(struct asn_buf *b, u_char *ptr, size_t *moved)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
asn_len_t len;
|
|
|
|
u_int lenlen, shift;
|
|
|
|
|
|
|
|
/* compute length of encoded value without header */
|
|
|
|
len = b->asn_ptr - (ptr + TEMP_LEN);
|
|
|
|
|
|
|
|
/* insert length. may not fail. */
|
|
|
|
lenlen = asn_put_len(ptr + 1, len);
|
|
|
|
if (lenlen > TEMP_LEN - 1)
|
|
|
|
return (ASN_ERR_FAILED);
|
|
|
|
|
|
|
|
if (lenlen < TEMP_LEN - 1) {
|
|
|
|
/* shift value down */
|
|
|
|
shift = (TEMP_LEN - 1) - lenlen;
|
|
|
|
memmove(ptr + 1 + lenlen, ptr + TEMP_LEN, len);
|
|
|
|
b->asn_ptr -= shift;
|
|
|
|
b->asn_len += shift;
|
2010-12-08 13:51:38 +00:00
|
|
|
if (moved != NULL)
|
|
|
|
*moved = shift;
|
2003-11-10 08:53:38 +00:00
|
|
|
}
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
#undef TEMP_LEN
|
|
|
|
|
|
|
|
/*
|
|
|
|
* BER integer. This may be used to get a signed 64 bit integer at maximum.
|
|
|
|
* The maximum length should be checked by the caller. This cannot overflow
|
|
|
|
* if the caller ensures that len is at maximum 8.
|
|
|
|
*
|
|
|
|
* <bytes>
|
|
|
|
*/
|
|
|
|
static enum asn_err
|
|
|
|
asn_get_real_integer(struct asn_buf *b, asn_len_t len, int64_t *vp)
|
|
|
|
{
|
2004-08-06 13:38:30 +00:00
|
|
|
uint64_t val;
|
2003-11-10 08:53:38 +00:00
|
|
|
int neg = 0;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncated integer");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (len == 0) {
|
|
|
|
asn_error(b, "zero-length integer");
|
|
|
|
*vp = 0;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
err = ASN_ERR_OK;
|
|
|
|
if (len > 8)
|
|
|
|
err = ASN_ERR_RANGE;
|
2004-01-23 10:44:47 +00:00
|
|
|
else if (len > 1 &&
|
|
|
|
((*b->asn_cptr == 0x00 && (b->asn_cptr[1] & 0x80) == 0) ||
|
|
|
|
(*b->asn_cptr == 0xff && (b->asn_cptr[1] & 0x80) == 0x80))) {
|
|
|
|
asn_error(b, "non-minimal integer");
|
|
|
|
err = ASN_ERR_BADLEN;
|
|
|
|
}
|
|
|
|
|
2003-11-10 08:53:38 +00:00
|
|
|
if (*b->asn_cptr & 0x80)
|
|
|
|
neg = 1;
|
|
|
|
val = 0;
|
|
|
|
while (len--) {
|
|
|
|
val <<= 8;
|
|
|
|
val |= neg ? (u_char)~*b->asn_cptr : *b->asn_cptr;
|
|
|
|
b->asn_len--;
|
|
|
|
b->asn_cptr++;
|
|
|
|
}
|
|
|
|
if (neg) {
|
|
|
|
*vp = -(int64_t)val - 1;
|
|
|
|
} else
|
|
|
|
*vp = (int64_t)val;
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write a signed integer with the given type. The caller has to ensure
|
|
|
|
* that the actual value is ok for this type.
|
|
|
|
*/
|
|
|
|
static enum asn_err
|
|
|
|
asn_put_real_integer(struct asn_buf *b, u_char type, int64_t ival)
|
|
|
|
{
|
|
|
|
int i, neg = 0;
|
|
|
|
# define OCTETS 8
|
|
|
|
u_char buf[OCTETS];
|
2004-08-06 13:38:30 +00:00
|
|
|
uint64_t val;
|
2003-11-10 08:53:38 +00:00
|
|
|
enum asn_err ret;
|
|
|
|
|
|
|
|
if (ival < 0) {
|
|
|
|
/* this may fail if |INT64_MIN| > |INT64_MAX| and
|
|
|
|
* the value is between * INT64_MIN <= ival < -(INT64_MAX+1) */
|
2004-08-06 13:38:30 +00:00
|
|
|
val = (uint64_t)-(ival + 1);
|
2003-11-10 08:53:38 +00:00
|
|
|
neg = 1;
|
|
|
|
} else
|
2004-08-06 13:38:30 +00:00
|
|
|
val = (uint64_t)ival;
|
2003-11-10 08:53:38 +00:00
|
|
|
|
|
|
|
/* split the value into octets */
|
|
|
|
for (i = OCTETS - 1; i >= 0; i--) {
|
|
|
|
buf[i] = val & 0xff;
|
|
|
|
if (neg)
|
|
|
|
buf[i] = ~buf[i];
|
|
|
|
val >>= 8;
|
|
|
|
}
|
|
|
|
/* no leading 9 zeroes or ones */
|
|
|
|
for (i = 0; i < OCTETS - 1; i++)
|
|
|
|
if (!((buf[i] == 0xff && (buf[i + 1] & 0x80) != 0) ||
|
|
|
|
(buf[i] == 0x00 && (buf[i + 1] & 0x80) == 0)))
|
|
|
|
break;
|
|
|
|
if ((ret = asn_put_header(b, type, OCTETS - i)))
|
|
|
|
return (ret);
|
|
|
|
if (OCTETS - (u_int)i > b->asn_len)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
while (i < OCTETS) {
|
|
|
|
*b->asn_ptr++ = buf[i++];
|
|
|
|
b->asn_len--;
|
|
|
|
}
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
# undef OCTETS
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The same for unsigned 64-bitters. Here we have the problem, that overflow
|
|
|
|
* can happen, because the value maybe 9 bytes long. In this case the
|
|
|
|
* first byte must be 0.
|
|
|
|
*/
|
|
|
|
static enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_get_real_unsigned(struct asn_buf *b, asn_len_t len, uint64_t *vp)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncated integer");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (len == 0) {
|
|
|
|
asn_error(b, "zero-length integer");
|
|
|
|
*vp = 0;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
err = ASN_ERR_OK;
|
|
|
|
*vp = 0;
|
|
|
|
if ((*b->asn_cptr & 0x80) || (len == 9 && *b->asn_cptr != 0)) {
|
|
|
|
/* negative integer or too larger */
|
|
|
|
*vp = 0xffffffffffffffffULL;
|
|
|
|
err = ASN_ERR_RANGE;
|
2004-01-23 10:44:47 +00:00
|
|
|
} else if (len > 1 &&
|
|
|
|
*b->asn_cptr == 0x00 && (b->asn_cptr[1] & 0x80) == 0) {
|
|
|
|
asn_error(b, "non-minimal unsigned");
|
|
|
|
err = ASN_ERR_BADLEN;
|
2003-11-10 08:53:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
while (len--) {
|
|
|
|
*vp = (*vp << 8) | *b->asn_cptr++;
|
|
|
|
b->asn_len--;
|
|
|
|
}
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Values with the msb on need 9 octets.
|
|
|
|
*/
|
|
|
|
static int
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_put_real_unsigned(struct asn_buf *b, u_char type, uint64_t val)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
# define OCTETS 9
|
|
|
|
u_char buf[OCTETS];
|
|
|
|
enum asn_err ret;
|
|
|
|
|
|
|
|
/* split the value into octets */
|
|
|
|
for (i = OCTETS - 1; i >= 0; i--) {
|
|
|
|
buf[i] = val & 0xff;
|
|
|
|
val >>= 8;
|
|
|
|
}
|
|
|
|
/* no leading 9 zeroes */
|
|
|
|
for (i = 0; i < OCTETS - 1; i++)
|
|
|
|
if (!(buf[i] == 0x00 && (buf[i + 1] & 0x80) == 0))
|
|
|
|
break;
|
|
|
|
if ((ret = asn_put_header(b, type, OCTETS - i)))
|
|
|
|
return (ret);
|
|
|
|
if (OCTETS - (u_int)i > b->asn_len)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
while (i < OCTETS) {
|
|
|
|
*b->asn_ptr++ = buf[i++];
|
|
|
|
b->asn_len--;
|
|
|
|
}
|
|
|
|
#undef OCTETS
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The ASN.1 INTEGER type is restricted to 32-bit signed by the SMI.
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_integer_raw(struct asn_buf *b, asn_len_t len, int32_t *vp)
|
|
|
|
{
|
|
|
|
int64_t val;
|
|
|
|
enum asn_err ret;
|
|
|
|
|
|
|
|
if ((ret = asn_get_real_integer(b, len, &val)) == ASN_ERR_OK) {
|
|
|
|
if (len > 4)
|
|
|
|
ret = ASN_ERR_BADLEN;
|
|
|
|
else if (val > INT32_MAX || val < INT32_MIN)
|
|
|
|
/* may not happen */
|
|
|
|
ret = ASN_ERR_RANGE;
|
|
|
|
*vp = (int32_t)val;
|
|
|
|
}
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_get_integer(struct asn_buf *b, int32_t *vp)
|
|
|
|
{
|
|
|
|
asn_len_t len;
|
|
|
|
u_char type;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != ASN_TYPE_INTEGER) {
|
|
|
|
asn_error(b, "bad type for integer (%u)", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (asn_get_integer_raw(b, len, vp));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_integer(struct asn_buf *b, int32_t val)
|
|
|
|
{
|
|
|
|
return (asn_put_real_integer(b, ASN_TYPE_INTEGER, val));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* OCTETSTRING
|
|
|
|
*
|
|
|
|
* <0x04> <len> <data ...>
|
|
|
|
*
|
|
|
|
* Get an octetstring. noctets must point to the buffer size and on
|
|
|
|
* return will contain the size of the octetstring, regardless of the
|
|
|
|
* buffer size.
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_octetstring_raw(struct asn_buf *b, asn_len_t len, u_char *octets,
|
|
|
|
u_int *noctets)
|
|
|
|
{
|
|
|
|
enum asn_err err = ASN_ERR_OK;
|
|
|
|
|
|
|
|
if (*noctets < len) {
|
|
|
|
asn_error(b, "octetstring truncated");
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncatet octetstring");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (*noctets < len)
|
|
|
|
memcpy(octets, b->asn_cptr, *noctets);
|
|
|
|
else
|
|
|
|
memcpy(octets, b->asn_cptr, len);
|
|
|
|
*noctets = len;
|
|
|
|
b->asn_cptr += len;
|
|
|
|
b->asn_len -= len;
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_get_octetstring(struct asn_buf *b, u_char *octets, u_int *noctets)
|
|
|
|
{
|
|
|
|
enum asn_err err;
|
|
|
|
u_char type;
|
|
|
|
asn_len_t len;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != ASN_TYPE_OCTETSTRING) {
|
|
|
|
asn_error(b, "bad type for octetstring (%u)", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
return (asn_get_octetstring_raw(b, len, octets, noctets));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_octetstring(struct asn_buf *b, const u_char *octets, u_int noctets)
|
|
|
|
{
|
|
|
|
enum asn_err ret;
|
|
|
|
|
|
|
|
if ((ret = asn_put_header(b, ASN_TYPE_OCTETSTRING, noctets)) != ASN_ERR_OK)
|
|
|
|
return (ret);
|
|
|
|
if (b->asn_len < noctets)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
memcpy(b->asn_ptr, octets, noctets);
|
|
|
|
b->asn_ptr += noctets;
|
|
|
|
b->asn_len -= noctets;
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NULL
|
|
|
|
*
|
|
|
|
* <0x05> <0x00>
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_null_raw(struct asn_buf *b, asn_len_t len)
|
|
|
|
{
|
|
|
|
if (len != 0) {
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncated NULL");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
asn_error(b, "bad length for NULL (%u)", len);
|
|
|
|
b->asn_len -= len;
|
|
|
|
b->asn_ptr += len;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_get_null(struct asn_buf *b)
|
|
|
|
{
|
|
|
|
u_char type;
|
|
|
|
asn_len_t len;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != ASN_TYPE_NULL) {
|
|
|
|
asn_error(b, "bad type for NULL (%u)", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
return (asn_get_null_raw(b, len));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_null(struct asn_buf *b)
|
|
|
|
{
|
|
|
|
return (asn_put_header(b, ASN_TYPE_NULL, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_exception(struct asn_buf *b, u_int except)
|
|
|
|
{
|
|
|
|
return (asn_put_header(b, ASN_CLASS_CONTEXT | except, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* OBJID
|
|
|
|
*
|
|
|
|
* <0x06> <len> <subid...>
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_objid_raw(struct asn_buf *b, asn_len_t len, struct asn_oid *oid)
|
|
|
|
{
|
|
|
|
asn_subid_t subid;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncated OBJID");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
oid->len = 0;
|
|
|
|
if (len == 0) {
|
|
|
|
asn_error(b, "short OBJID");
|
|
|
|
oid->subs[oid->len++] = 0;
|
|
|
|
oid->subs[oid->len++] = 0;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
err = ASN_ERR_OK;
|
|
|
|
while (len != 0) {
|
|
|
|
if (oid->len == ASN_MAXOIDLEN) {
|
|
|
|
asn_error(b, "OID too long (%u)", oid->len);
|
|
|
|
b->asn_cptr += len;
|
|
|
|
b->asn_len -= len;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
subid = 0;
|
|
|
|
do {
|
|
|
|
if (len == 0) {
|
|
|
|
asn_error(b, "unterminated subid");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (subid > (ASN_MAXID >> 7)) {
|
|
|
|
asn_error(b, "OBID subid too larger");
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
|
|
|
subid = (subid << 7) | (*b->asn_cptr & 0x7f);
|
|
|
|
len--;
|
|
|
|
b->asn_len--;
|
|
|
|
} while (*b->asn_cptr++ & 0x80);
|
|
|
|
if (oid->len == 0) {
|
|
|
|
if (subid < 80) {
|
|
|
|
oid->subs[oid->len++] = subid / 40;
|
|
|
|
oid->subs[oid->len++] = subid % 40;
|
|
|
|
} else {
|
|
|
|
oid->subs[oid->len++] = 2;
|
|
|
|
oid->subs[oid->len++] = subid - 80;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
oid->subs[oid->len++] = subid;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_get_objid(struct asn_buf *b, struct asn_oid *oid)
|
|
|
|
{
|
|
|
|
u_char type;
|
|
|
|
asn_len_t len;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != ASN_TYPE_OBJID) {
|
|
|
|
asn_error(b, "bad type for OBJID (%u)", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
return (asn_get_objid_raw(b, len, oid));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_objid(struct asn_buf *b, const struct asn_oid *oid)
|
|
|
|
{
|
|
|
|
asn_subid_t first, sub;
|
|
|
|
enum asn_err err, err1;
|
|
|
|
u_int i, oidlen;
|
|
|
|
asn_len_t len;
|
|
|
|
|
|
|
|
err = ASN_ERR_OK;
|
|
|
|
if (oid->len == 0) {
|
|
|
|
/* illegal */
|
|
|
|
asn_error(NULL, "short oid");
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
first = 0;
|
|
|
|
oidlen = 2;
|
|
|
|
} else if (oid->len == 1) {
|
|
|
|
/* illegal */
|
|
|
|
asn_error(b, "short oid");
|
|
|
|
if (oid->subs[0] > 2)
|
|
|
|
asn_error(NULL, "oid[0] too large (%u)", oid->subs[0]);
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
first = oid->subs[0] * 40;
|
|
|
|
oidlen = 2;
|
|
|
|
} else {
|
|
|
|
if (oid->len > ASN_MAXOIDLEN) {
|
|
|
|
asn_error(NULL, "oid too long %u", oid->len);
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
|
|
|
if (oid->subs[0] > 2 ||
|
2014-01-21 16:49:54 +00:00
|
|
|
(oid->subs[0] < 2 && oid->subs[1] >= 40)) {
|
2003-11-10 08:53:38 +00:00
|
|
|
asn_error(NULL, "oid out of range (%u,%u)",
|
|
|
|
oid->subs[0], oid->subs[1]);
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
|
|
|
first = 40 * oid->subs[0] + oid->subs[1];
|
|
|
|
oidlen = oid->len;
|
|
|
|
}
|
|
|
|
len = 0;
|
|
|
|
for (i = 1; i < oidlen; i++) {
|
|
|
|
sub = (i == 1) ? first : oid->subs[i];
|
|
|
|
if (sub > ASN_MAXID) {
|
|
|
|
asn_error(NULL, "oid subid too large");
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
|
|
|
len += (sub <= 0x7f) ? 1
|
|
|
|
: (sub <= 0x3fff) ? 2
|
|
|
|
: (sub <= 0x1fffff) ? 3
|
|
|
|
: (sub <= 0xfffffff) ? 4
|
|
|
|
: 5;
|
|
|
|
}
|
|
|
|
if ((err1 = asn_put_header(b, ASN_TYPE_OBJID, len)) != ASN_ERR_OK)
|
|
|
|
return (err1);
|
|
|
|
if (b->asn_len < len)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
for (i = 1; i < oidlen; i++) {
|
|
|
|
sub = (i == 1) ? first : oid->subs[i];
|
|
|
|
if (sub <= 0x7f) {
|
|
|
|
*b->asn_ptr++ = sub;
|
|
|
|
b->asn_len--;
|
|
|
|
} else if (sub <= 0x3fff) {
|
|
|
|
*b->asn_ptr++ = (sub >> 7) | 0x80;
|
|
|
|
*b->asn_ptr++ = sub & 0x7f;
|
|
|
|
b->asn_len -= 2;
|
|
|
|
} else if (sub <= 0x1fffff) {
|
|
|
|
*b->asn_ptr++ = (sub >> 14) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = sub & 0x7f;
|
|
|
|
b->asn_len -= 3;
|
|
|
|
} else if (sub <= 0xfffffff) {
|
|
|
|
*b->asn_ptr++ = (sub >> 21) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 14) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = sub & 0x7f;
|
|
|
|
b->asn_len -= 4;
|
|
|
|
} else {
|
|
|
|
*b->asn_ptr++ = (sub >> 28) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 21) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 14) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
|
|
|
|
*b->asn_ptr++ = sub & 0x7f;
|
|
|
|
b->asn_len -= 5;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* SEQUENCE header
|
|
|
|
*
|
|
|
|
* <0x10|0x20> <len> <data...>
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_sequence(struct asn_buf *b, asn_len_t *len)
|
|
|
|
{
|
|
|
|
u_char type;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != (ASN_TYPE_SEQUENCE|ASN_TYPE_CONSTRUCTED)) {
|
|
|
|
asn_error(b, "bad sequence type %u", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
if (*len > b->asn_len) {
|
|
|
|
asn_error(b, "truncated sequence");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Application types
|
|
|
|
*
|
|
|
|
* 0x40 4 MSB 2MSB 2LSB LSB
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_get_ipaddress_raw(struct asn_buf *b, asn_len_t len, u_char *addr)
|
|
|
|
{
|
|
|
|
u_int i;
|
|
|
|
|
|
|
|
if (b->asn_len < len) {
|
|
|
|
asn_error(b, "truncated ip-address");
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
}
|
|
|
|
if (len < 4) {
|
|
|
|
asn_error(b, "short length for ip-Address %u", len);
|
|
|
|
for (i = 0; i < len; i++)
|
|
|
|
*addr++ = *b->asn_cptr++;
|
|
|
|
while (i++ < len)
|
|
|
|
*addr++ = 0;
|
|
|
|
b->asn_len -= len;
|
|
|
|
return (ASN_ERR_BADLEN);
|
|
|
|
}
|
|
|
|
for (i = 0; i < 4; i++)
|
|
|
|
*addr++ = *b->asn_cptr++;
|
|
|
|
b->asn_cptr += len - 4;
|
|
|
|
b->asn_len -= len;
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_get_ipaddress(struct asn_buf *b, u_char *addr)
|
|
|
|
{
|
|
|
|
u_char type;
|
|
|
|
asn_len_t len;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != (ASN_CLASS_APPLICATION|ASN_APP_IPADDRESS)) {
|
|
|
|
asn_error(b, "bad type for ip-address %u", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
return (asn_get_ipaddress_raw(b, len, addr));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
|
|
|
asn_put_ipaddress(struct asn_buf *b, const u_char *addr)
|
|
|
|
{
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_put_header(b, ASN_CLASS_APPLICATION|ASN_APP_IPADDRESS,
|
|
|
|
4)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (b->asn_len < 4)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
|
|
|
|
memcpy(b->asn_ptr, addr, 4);
|
|
|
|
b->asn_ptr += 4;
|
|
|
|
b->asn_len -= 4;
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* UNSIGNED32
|
|
|
|
*
|
|
|
|
* 0x42|0x41 <len> ...
|
|
|
|
*/
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_get_uint32_raw(struct asn_buf *b, asn_len_t len, uint32_t *vp)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
2004-08-06 13:38:30 +00:00
|
|
|
uint64_t v;
|
2003-11-10 08:53:38 +00:00
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_real_unsigned(b, len, &v)) == ASN_ERR_OK) {
|
|
|
|
if (len > 5) {
|
|
|
|
asn_error(b, "uint32 too long %u", len);
|
|
|
|
err = ASN_ERR_BADLEN;
|
|
|
|
} else if (v > UINT32_MAX) {
|
|
|
|
asn_error(b, "uint32 too large %llu", v);
|
|
|
|
err = ASN_ERR_RANGE;
|
|
|
|
}
|
2004-08-06 13:38:30 +00:00
|
|
|
*vp = (uint32_t)v;
|
2003-11-10 08:53:38 +00:00
|
|
|
}
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_put_uint32(struct asn_buf *b, u_char type, uint32_t val)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
2004-08-06 13:38:30 +00:00
|
|
|
uint64_t v = val;
|
2003-11-10 08:53:38 +00:00
|
|
|
|
|
|
|
return (asn_put_real_unsigned(b, ASN_CLASS_APPLICATION|type, v));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* COUNTER64
|
|
|
|
* 0x46 <len> ...
|
|
|
|
*/
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_get_counter64_raw(struct asn_buf *b, asn_len_t len, uint64_t *vp)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
return (asn_get_real_unsigned(b, len, vp));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_put_counter64(struct asn_buf *b, uint64_t val)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
return (asn_put_real_unsigned(b,
|
|
|
|
ASN_CLASS_APPLICATION | ASN_APP_COUNTER64, val));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TimeTicks
|
|
|
|
* 0x43 <len> ...
|
|
|
|
*/
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_get_timeticks(struct asn_buf *b, uint32_t *vp)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
|
|
|
asn_len_t len;
|
|
|
|
u_char type;
|
|
|
|
enum asn_err err;
|
|
|
|
|
|
|
|
if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
|
|
|
|
return (err);
|
|
|
|
if (type != (ASN_CLASS_APPLICATION|ASN_APP_TIMETICKS)) {
|
|
|
|
asn_error(b, "bad type for timeticks %u", type);
|
|
|
|
return (ASN_ERR_TAG);
|
|
|
|
}
|
|
|
|
return (asn_get_uint32_raw(b, len, vp));
|
|
|
|
}
|
|
|
|
|
|
|
|
enum asn_err
|
2004-08-06 13:38:30 +00:00
|
|
|
asn_put_timeticks(struct asn_buf *b, uint32_t val)
|
2003-11-10 08:53:38 +00:00
|
|
|
{
|
2004-08-06 13:38:30 +00:00
|
|
|
uint64_t v = val;
|
2003-11-10 08:53:38 +00:00
|
|
|
|
|
|
|
return (asn_put_real_unsigned(b,
|
|
|
|
ASN_CLASS_APPLICATION | ASN_APP_TIMETICKS, v));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Construct a new OID by taking a range of sub ids of the original oid.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
asn_slice_oid(struct asn_oid *dest, const struct asn_oid *src,
|
|
|
|
u_int from, u_int to)
|
|
|
|
{
|
|
|
|
if (from >= to) {
|
|
|
|
dest->len = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
dest->len = to - from;
|
|
|
|
memcpy(dest->subs, &src->subs[from], dest->len * sizeof(dest->subs[0]));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Append from to to
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
asn_append_oid(struct asn_oid *to, const struct asn_oid *from)
|
|
|
|
{
|
|
|
|
memcpy(&to->subs[to->len], &from->subs[0],
|
|
|
|
from->len * sizeof(from->subs[0]));
|
|
|
|
to->len += from->len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Skip a value
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_skip(struct asn_buf *b, asn_len_t len)
|
|
|
|
{
|
|
|
|
if (b->asn_len < len)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
b->asn_cptr += len;
|
|
|
|
b->asn_len -= len;
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
2010-12-08 13:51:38 +00:00
|
|
|
/*
|
|
|
|
* Add a padding
|
|
|
|
*/
|
|
|
|
enum asn_err
|
|
|
|
asn_pad(struct asn_buf *b, asn_len_t len)
|
|
|
|
{
|
|
|
|
if (b->asn_len < len)
|
|
|
|
return (ASN_ERR_EOBUF);
|
|
|
|
b->asn_ptr += len;
|
|
|
|
b->asn_len -= len;
|
|
|
|
|
|
|
|
return (ASN_ERR_OK);
|
|
|
|
}
|
|
|
|
|
2003-11-10 08:53:38 +00:00
|
|
|
/*
|
|
|
|
* Compare two OIDs.
|
|
|
|
*
|
|
|
|
* o1 < o2 : -1
|
|
|
|
* o1 > o2 : +1
|
|
|
|
* o1 = o2 : 0
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
asn_compare_oid(const struct asn_oid *o1, const struct asn_oid *o2)
|
|
|
|
{
|
|
|
|
u_long i;
|
|
|
|
|
|
|
|
for (i = 0; i < o1->len && i < o2->len; i++) {
|
|
|
|
if (o1->subs[i] < o2->subs[i])
|
|
|
|
return (-1);
|
|
|
|
if (o1->subs[i] > o2->subs[i])
|
|
|
|
return (+1);
|
|
|
|
}
|
|
|
|
if (o1->len < o2->len)
|
|
|
|
return (-1);
|
|
|
|
if (o1->len > o2->len)
|
|
|
|
return (+1);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check whether an OID is a sub-string of another OID.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
asn_is_suboid(const struct asn_oid *o1, const struct asn_oid *o2)
|
|
|
|
{
|
|
|
|
u_long i;
|
|
|
|
|
|
|
|
for (i = 0; i < o1->len; i++)
|
|
|
|
if (i >= o2->len || o1->subs[i] != o2->subs[i])
|
|
|
|
return (0);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Put a string representation of an oid into a user buffer. This buffer
|
|
|
|
* is assumed to be at least ASN_OIDSTRLEN characters long.
|
|
|
|
*
|
|
|
|
* sprintf is assumed not to fail here.
|
|
|
|
*/
|
|
|
|
char *
|
|
|
|
asn_oid2str_r(const struct asn_oid *oid, char *buf)
|
|
|
|
{
|
|
|
|
u_int len, i;
|
|
|
|
char *ptr;
|
|
|
|
|
|
|
|
if ((len = oid->len) > ASN_MAXOIDLEN)
|
|
|
|
len = ASN_MAXOIDLEN;
|
|
|
|
buf[0] = '\0';
|
|
|
|
for (i = 0, ptr = buf; i < len; i++) {
|
|
|
|
if (i > 0)
|
|
|
|
*ptr++ = '.';
|
|
|
|
ptr += sprintf(ptr, "%u", oid->subs[i]);
|
|
|
|
}
|
|
|
|
return (buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make a string from an OID in a private buffer.
|
|
|
|
*/
|
|
|
|
char *
|
|
|
|
asn_oid2str(const struct asn_oid *oid)
|
|
|
|
{
|
|
|
|
static char str[ASN_OIDSTRLEN];
|
|
|
|
|
|
|
|
return (asn_oid2str_r(oid, str));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
asn_error_func(const struct asn_buf *b, const char *err, ...)
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
u_long i;
|
|
|
|
|
|
|
|
fprintf(stderr, "ASN.1: ");
|
|
|
|
va_start(ap, err);
|
|
|
|
vfprintf(stderr, err, ap);
|
|
|
|
va_end(ap);
|
|
|
|
|
|
|
|
if (b != NULL) {
|
|
|
|
fprintf(stderr, " at");
|
|
|
|
for (i = 0; b->asn_len > i; i++)
|
|
|
|
fprintf(stderr, " %02x", b->asn_cptr[i]);
|
|
|
|
}
|
|
|
|
fprintf(stderr, "\n");
|
|
|
|
}
|