mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-04 23:18:26 -05:00
437 lines
9.4 KiB
C
437 lines
9.4 KiB
C
|
/* $OpenBSD: asn1_lib.c,v 1.44 2018/11/17 09:34:11 tb Exp $ */
|
||
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* This package is an SSL implementation written
|
||
|
* by Eric Young (eay@cryptsoft.com).
|
||
|
* The implementation was written so as to conform with Netscapes SSL.
|
||
|
*
|
||
|
* This library is free for commercial and non-commercial use as long as
|
||
|
* the following conditions are aheared to. The following conditions
|
||
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
||
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
||
|
* included with this distribution is covered by the same copyright terms
|
||
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
||
|
*
|
||
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
||
|
* the code are not to be removed.
|
||
|
* If this package is used in a product, Eric Young should be given attribution
|
||
|
* as the author of the parts of the library used.
|
||
|
* This can be in the form of a textual message at program startup or
|
||
|
* in documentation (online or textual) provided with the package.
|
||
|
*
|
||
|
* 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 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. All advertising materials mentioning features or use of this software
|
||
|
* must display the following acknowledgement:
|
||
|
* "This product includes cryptographic software written by
|
||
|
* Eric Young (eay@cryptsoft.com)"
|
||
|
* The word 'cryptographic' can be left out if the rouines from the library
|
||
|
* being used are not cryptographic related :-).
|
||
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
||
|
* the apps directory (application code) you must include an acknowledgement:
|
||
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 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.
|
||
|
*
|
||
|
* The licence and distribution terms for any publically available version or
|
||
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
||
|
* copied and put under another distribution licence
|
||
|
* [including the GNU Public Licence.]
|
||
|
*/
|
||
|
|
||
|
#include <limits.h>
|
||
|
#include <stdio.h>
|
||
|
#include <string.h>
|
||
|
|
||
|
#include <openssl/asn1.h>
|
||
|
#include <openssl/err.h>
|
||
|
|
||
|
static int asn1_get_length(const unsigned char **pp, int *inf, long *rl, int max);
|
||
|
static void asn1_put_length(unsigned char **pp, int length);
|
||
|
|
||
|
static int
|
||
|
_asn1_check_infinite_end(const unsigned char **p, long len)
|
||
|
{
|
||
|
/* If there is 0 or 1 byte left, the length check should pick
|
||
|
* things up */
|
||
|
if (len <= 0)
|
||
|
return (1);
|
||
|
else if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0)) {
|
||
|
(*p) += 2;
|
||
|
return (1);
|
||
|
}
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_check_infinite_end(unsigned char **p, long len)
|
||
|
{
|
||
|
return _asn1_check_infinite_end((const unsigned char **)p, len);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_const_check_infinite_end(const unsigned char **p, long len)
|
||
|
{
|
||
|
return _asn1_check_infinite_end(p, len);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
|
||
|
int *pclass, long omax)
|
||
|
{
|
||
|
int i, ret;
|
||
|
long l;
|
||
|
const unsigned char *p = *pp;
|
||
|
int tag, xclass, inf;
|
||
|
long max = omax;
|
||
|
|
||
|
if (!max)
|
||
|
goto err;
|
||
|
ret = (*p & V_ASN1_CONSTRUCTED);
|
||
|
xclass = (*p & V_ASN1_PRIVATE);
|
||
|
i = *p & V_ASN1_PRIMITIVE_TAG;
|
||
|
if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
|
||
|
p++;
|
||
|
if (--max == 0)
|
||
|
goto err;
|
||
|
l = 0;
|
||
|
while (*p & 0x80) {
|
||
|
l <<= 7L;
|
||
|
l |= *(p++) & 0x7f;
|
||
|
if (--max == 0)
|
||
|
goto err;
|
||
|
if (l > (INT_MAX >> 7L))
|
||
|
goto err;
|
||
|
}
|
||
|
l <<= 7L;
|
||
|
l |= *(p++) & 0x7f;
|
||
|
tag = (int)l;
|
||
|
if (--max == 0)
|
||
|
goto err;
|
||
|
} else {
|
||
|
tag = i;
|
||
|
p++;
|
||
|
if (--max == 0)
|
||
|
goto err;
|
||
|
}
|
||
|
*ptag = tag;
|
||
|
*pclass = xclass;
|
||
|
if (!asn1_get_length(&p, &inf, plength, (int)max))
|
||
|
goto err;
|
||
|
|
||
|
if (inf && !(ret & V_ASN1_CONSTRUCTED))
|
||
|
goto err;
|
||
|
|
||
|
if (*plength > (omax - (p - *pp))) {
|
||
|
ASN1error(ASN1_R_TOO_LONG);
|
||
|
/* Set this so that even if things are not long enough
|
||
|
* the values are set correctly */
|
||
|
ret |= 0x80;
|
||
|
}
|
||
|
*pp = p;
|
||
|
return (ret | inf);
|
||
|
|
||
|
err:
|
||
|
ASN1error(ASN1_R_HEADER_TOO_LONG);
|
||
|
return (0x80);
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
asn1_get_length(const unsigned char **pp, int *inf, long *rl, int max)
|
||
|
{
|
||
|
const unsigned char *p = *pp;
|
||
|
unsigned long ret = 0;
|
||
|
unsigned int i;
|
||
|
|
||
|
if (max-- < 1)
|
||
|
return (0);
|
||
|
if (*p == 0x80) {
|
||
|
*inf = 1;
|
||
|
ret = 0;
|
||
|
p++;
|
||
|
} else {
|
||
|
*inf = 0;
|
||
|
i = *p & 0x7f;
|
||
|
if (*(p++) & 0x80) {
|
||
|
if (max < (int)i)
|
||
|
return (0);
|
||
|
/* skip leading zeroes */
|
||
|
while (i && *p == 0) {
|
||
|
p++;
|
||
|
i--;
|
||
|
}
|
||
|
if (i > sizeof(long))
|
||
|
return 0;
|
||
|
while (i-- > 0) {
|
||
|
ret <<= 8L;
|
||
|
ret |= *(p++);
|
||
|
}
|
||
|
} else
|
||
|
ret = i;
|
||
|
}
|
||
|
if (ret > LONG_MAX)
|
||
|
return 0;
|
||
|
*pp = p;
|
||
|
*rl = (long)ret;
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
/* class 0 is constructed
|
||
|
* constructed == 2 for indefinite length constructed */
|
||
|
void
|
||
|
ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
|
||
|
int xclass)
|
||
|
{
|
||
|
unsigned char *p = *pp;
|
||
|
int i, ttag;
|
||
|
|
||
|
i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
|
||
|
i |= (xclass & V_ASN1_PRIVATE);
|
||
|
if (tag < 31)
|
||
|
*(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
|
||
|
else {
|
||
|
*(p++) = i | V_ASN1_PRIMITIVE_TAG;
|
||
|
for(i = 0, ttag = tag; ttag > 0; i++)
|
||
|
ttag >>= 7;
|
||
|
ttag = i;
|
||
|
while (i-- > 0) {
|
||
|
p[i] = tag & 0x7f;
|
||
|
if (i != (ttag - 1))
|
||
|
p[i] |= 0x80;
|
||
|
tag >>= 7;
|
||
|
}
|
||
|
p += ttag;
|
||
|
}
|
||
|
if (constructed == 2)
|
||
|
*(p++) = 0x80;
|
||
|
else
|
||
|
asn1_put_length(&p, length);
|
||
|
*pp = p;
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_put_eoc(unsigned char **pp)
|
||
|
{
|
||
|
unsigned char *p = *pp;
|
||
|
|
||
|
*p++ = 0;
|
||
|
*p++ = 0;
|
||
|
*pp = p;
|
||
|
return 2;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
asn1_put_length(unsigned char **pp, int length)
|
||
|
{
|
||
|
unsigned char *p = *pp;
|
||
|
|
||
|
int i, l;
|
||
|
if (length <= 127)
|
||
|
*(p++) = (unsigned char)length;
|
||
|
else {
|
||
|
l = length;
|
||
|
for (i = 0; l > 0; i++)
|
||
|
l >>= 8;
|
||
|
*(p++) = i | 0x80;
|
||
|
l = i;
|
||
|
while (i-- > 0) {
|
||
|
p[i] = length & 0xff;
|
||
|
length >>= 8;
|
||
|
}
|
||
|
p += l;
|
||
|
}
|
||
|
*pp = p;
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_object_size(int constructed, int length, int tag)
|
||
|
{
|
||
|
int ret;
|
||
|
|
||
|
ret = length;
|
||
|
ret++;
|
||
|
if (tag >= 31) {
|
||
|
while (tag > 0) {
|
||
|
tag >>= 7;
|
||
|
ret++;
|
||
|
}
|
||
|
}
|
||
|
if (constructed == 2)
|
||
|
return ret + 3;
|
||
|
ret++;
|
||
|
if (length > 127) {
|
||
|
while (length > 0) {
|
||
|
length >>= 8;
|
||
|
ret++;
|
||
|
}
|
||
|
}
|
||
|
return (ret);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
|
||
|
{
|
||
|
if (str == NULL)
|
||
|
return 0;
|
||
|
dst->type = str->type;
|
||
|
if (!ASN1_STRING_set(dst, str->data, str->length))
|
||
|
return 0;
|
||
|
dst->flags = str->flags;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
ASN1_STRING *
|
||
|
ASN1_STRING_dup(const ASN1_STRING *str)
|
||
|
{
|
||
|
ASN1_STRING *ret;
|
||
|
|
||
|
if (!str)
|
||
|
return NULL;
|
||
|
ret = ASN1_STRING_new();
|
||
|
if (!ret)
|
||
|
return NULL;
|
||
|
if (!ASN1_STRING_copy(ret, str)) {
|
||
|
ASN1_STRING_free(ret);
|
||
|
return NULL;
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
|
||
|
{
|
||
|
const char *data = _data;
|
||
|
|
||
|
if (len < 0) {
|
||
|
if (data == NULL)
|
||
|
return (0);
|
||
|
else
|
||
|
len = strlen(data);
|
||
|
}
|
||
|
if ((str->length < len) || (str->data == NULL)) {
|
||
|
unsigned char *tmp;
|
||
|
tmp = realloc(str->data, len + 1);
|
||
|
if (tmp == NULL) {
|
||
|
ASN1error(ERR_R_MALLOC_FAILURE);
|
||
|
return (0);
|
||
|
}
|
||
|
str->data = tmp;
|
||
|
}
|
||
|
str->length = len;
|
||
|
if (data != NULL) {
|
||
|
memmove(str->data, data, len);
|
||
|
}
|
||
|
str->data[str->length] = '\0';
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
|
||
|
{
|
||
|
freezero(str->data, str->length);
|
||
|
str->data = data;
|
||
|
str->length = len;
|
||
|
}
|
||
|
|
||
|
ASN1_STRING *
|
||
|
ASN1_STRING_new(void)
|
||
|
{
|
||
|
return (ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
|
||
|
}
|
||
|
|
||
|
ASN1_STRING *
|
||
|
ASN1_STRING_type_new(int type)
|
||
|
{
|
||
|
ASN1_STRING *ret;
|
||
|
|
||
|
ret = malloc(sizeof(ASN1_STRING));
|
||
|
if (ret == NULL) {
|
||
|
ASN1error(ERR_R_MALLOC_FAILURE);
|
||
|
return (NULL);
|
||
|
}
|
||
|
ret->length = 0;
|
||
|
ret->type = type;
|
||
|
ret->data = NULL;
|
||
|
ret->flags = 0;
|
||
|
return (ret);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
ASN1_STRING_free(ASN1_STRING *a)
|
||
|
{
|
||
|
if (a == NULL)
|
||
|
return;
|
||
|
if (a->data != NULL && !(a->flags & ASN1_STRING_FLAG_NDEF))
|
||
|
freezero(a->data, a->length);
|
||
|
free(a);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
|
||
|
{
|
||
|
int i;
|
||
|
|
||
|
i = (a->length - b->length);
|
||
|
if (i == 0) {
|
||
|
i = memcmp(a->data, b->data, a->length);
|
||
|
if (i == 0)
|
||
|
return (a->type - b->type);
|
||
|
else
|
||
|
return (i);
|
||
|
} else
|
||
|
return (i);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
asn1_add_error(const unsigned char *address, int offset)
|
||
|
{
|
||
|
ERR_asprintf_error_data("offset=%d", offset);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_STRING_length(const ASN1_STRING *x)
|
||
|
{
|
||
|
return (x->length);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
ASN1_STRING_length_set(ASN1_STRING *x, int len)
|
||
|
{
|
||
|
x->length = len;
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ASN1_STRING_type(const ASN1_STRING *x)
|
||
|
{
|
||
|
return (x->type);
|
||
|
}
|
||
|
|
||
|
unsigned char *
|
||
|
ASN1_STRING_data(ASN1_STRING *x)
|
||
|
{
|
||
|
return (x->data);
|
||
|
}
|
||
|
|
||
|
const unsigned char *
|
||
|
ASN1_STRING_get0_data(const ASN1_STRING *x)
|
||
|
{
|
||
|
return (x->data);
|
||
|
}
|