mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-04 23:38:25 -05:00
218 lines
6.0 KiB
C
218 lines
6.0 KiB
C
|
/* $OpenBSD: x_long.c,v 1.16 2019/04/20 11:13:15 jsing Exp $ */
|
||
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
||
|
* project 2000.
|
||
|
*/
|
||
|
/* ====================================================================
|
||
|
* Copyright (c) 2000 The OpenSSL Project. 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. All advertising materials mentioning features or use of this
|
||
|
* software must display the following acknowledgment:
|
||
|
* "This product includes software developed by the OpenSSL Project
|
||
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
||
|
*
|
||
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
||
|
* endorse or promote products derived from this software without
|
||
|
* prior written permission. For written permission, please contact
|
||
|
* licensing@OpenSSL.org.
|
||
|
*
|
||
|
* 5. Products derived from this software may not be called "OpenSSL"
|
||
|
* nor may "OpenSSL" appear in their names without prior written
|
||
|
* permission of the OpenSSL Project.
|
||
|
*
|
||
|
* 6. Redistributions of any form whatsoever must retain the following
|
||
|
* acknowledgment:
|
||
|
* "This product includes software developed by the OpenSSL Project
|
||
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
||
|
* EXPRESSED 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 OpenSSL PROJECT OR
|
||
|
* ITS 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.
|
||
|
* ====================================================================
|
||
|
*
|
||
|
* This product includes cryptographic software written by Eric Young
|
||
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
||
|
* Hudson (tjh@cryptsoft.com).
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
#include <stdio.h>
|
||
|
#include <string.h>
|
||
|
|
||
|
#include <openssl/asn1t.h>
|
||
|
#include <openssl/bn.h>
|
||
|
#include <openssl/err.h>
|
||
|
|
||
|
/*
|
||
|
* Custom primitive type for long handling. This converts between an
|
||
|
* ASN1_INTEGER and a long directly.
|
||
|
*/
|
||
|
|
||
|
static int long_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
|
||
|
static void long_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
|
||
|
|
||
|
static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
|
||
|
const ASN1_ITEM *it);
|
||
|
static int long_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
|
||
|
int utype, char *free_cont, const ASN1_ITEM *it);
|
||
|
static int long_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
|
||
|
int indent, const ASN1_PCTX *pctx);
|
||
|
|
||
|
static ASN1_PRIMITIVE_FUNCS long_pf = {
|
||
|
.app_data = NULL,
|
||
|
.flags = 0,
|
||
|
.prim_new = long_new,
|
||
|
.prim_free = long_free,
|
||
|
.prim_clear = long_free, /* Clear should set to initial value */
|
||
|
.prim_c2i = long_c2i,
|
||
|
.prim_i2c = long_i2c,
|
||
|
.prim_print = long_print,
|
||
|
};
|
||
|
|
||
|
const ASN1_ITEM LONG_it = {
|
||
|
.itype = ASN1_ITYPE_PRIMITIVE,
|
||
|
.utype = V_ASN1_INTEGER,
|
||
|
.templates = NULL,
|
||
|
.tcount = 0,
|
||
|
.funcs = &long_pf,
|
||
|
.size = ASN1_LONG_UNDEF,
|
||
|
.sname = "LONG",
|
||
|
};
|
||
|
|
||
|
const ASN1_ITEM ZLONG_it = {
|
||
|
.itype = ASN1_ITYPE_PRIMITIVE,
|
||
|
.utype = V_ASN1_INTEGER,
|
||
|
.templates = NULL,
|
||
|
.tcount = 0,
|
||
|
.funcs = &long_pf,
|
||
|
.size = 0,
|
||
|
.sname = "ZLONG",
|
||
|
};
|
||
|
|
||
|
static int
|
||
|
long_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
{
|
||
|
*(long *)pval = it->size;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
long_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
{
|
||
|
*(long *)pval = it->size;
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
|
||
|
const ASN1_ITEM *it)
|
||
|
{
|
||
|
long ltmp;
|
||
|
unsigned long utmp;
|
||
|
int clen, pad, i;
|
||
|
/* this exists to bypass broken gcc optimization */
|
||
|
char *cp = (char *)pval;
|
||
|
|
||
|
/* use memcpy, because we may not be long aligned */
|
||
|
memcpy(<mp, cp, sizeof(long));
|
||
|
|
||
|
if (ltmp == it->size)
|
||
|
return -1;
|
||
|
/* Convert the long to positive: we subtract one if negative so
|
||
|
* we can cleanly handle the padding if only the MSB of the leading
|
||
|
* octet is set.
|
||
|
*/
|
||
|
if (ltmp < 0)
|
||
|
utmp = -(ltmp + 1);
|
||
|
else
|
||
|
utmp = ltmp;
|
||
|
clen = BN_num_bits_word(utmp);
|
||
|
/* If MSB of leading octet set we need to pad */
|
||
|
if (!(clen & 0x7))
|
||
|
pad = 1;
|
||
|
else
|
||
|
pad = 0;
|
||
|
|
||
|
/* Convert number of bits to number of octets */
|
||
|
clen = (clen + 7) >> 3;
|
||
|
|
||
|
if (cont) {
|
||
|
if (pad)
|
||
|
*cont++ = (ltmp < 0) ? 0xff : 0;
|
||
|
for (i = clen - 1; i >= 0; i--) {
|
||
|
cont[i] = (unsigned char)(utmp & 0xff);
|
||
|
if (ltmp < 0)
|
||
|
cont[i] ^= 0xff;
|
||
|
utmp >>= 8;
|
||
|
}
|
||
|
}
|
||
|
return clen + pad;
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
long_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype,
|
||
|
char *free_cont, const ASN1_ITEM *it)
|
||
|
{
|
||
|
int neg, i;
|
||
|
long ltmp;
|
||
|
unsigned long utmp = 0;
|
||
|
char *cp = (char *)pval;
|
||
|
if (len > (int)sizeof(long)) {
|
||
|
ASN1error(ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
|
||
|
return 0;
|
||
|
}
|
||
|
/* Is it negative? */
|
||
|
if (len && (cont[0] & 0x80))
|
||
|
neg = 1;
|
||
|
else
|
||
|
neg = 0;
|
||
|
utmp = 0;
|
||
|
for (i = 0; i < len; i++) {
|
||
|
utmp <<= 8;
|
||
|
if (neg)
|
||
|
utmp |= cont[i] ^ 0xff;
|
||
|
else
|
||
|
utmp |= cont[i];
|
||
|
}
|
||
|
ltmp = (long)utmp;
|
||
|
if (neg) {
|
||
|
ltmp = -ltmp;
|
||
|
ltmp--;
|
||
|
}
|
||
|
if (ltmp == it->size) {
|
||
|
ASN1error(ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
|
||
|
return 0;
|
||
|
}
|
||
|
memcpy(cp, <mp, sizeof(long));
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
long_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent,
|
||
|
const ASN1_PCTX *pctx)
|
||
|
{
|
||
|
if (BIO_printf(out, "%ld\n", *(long *)pval) <= 0)
|
||
|
return 0;
|
||
|
|
||
|
return 1;
|
||
|
}
|