mirror of https://github.com/openssl/openssl.git
333 lines
9.7 KiB
C
333 lines
9.7 KiB
C
/*
|
|
* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
|
|
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/cryptoerr.h>
|
|
#include <openssl/params.h>
|
|
#include "internal/cryptlib.h"
|
|
#include "internal/param_build.h"
|
|
|
|
#define OSSL_PARAM_ALLOCATED_END 127
|
|
|
|
typedef union {
|
|
OSSL_UNION_ALIGN;
|
|
} OSSL_PARAM_BLD_BLOCK;
|
|
|
|
#define ALIGN_SIZE sizeof(OSSL_PARAM_BLD_BLOCK)
|
|
|
|
static size_t bytes_to_blocks(size_t bytes)
|
|
{
|
|
return (bytes + ALIGN_SIZE - 1) / ALIGN_SIZE;
|
|
}
|
|
|
|
static OSSL_PARAM_BLD_DEF *param_push(OSSL_PARAM_BLD *bld, const char *key,
|
|
int size, size_t alloc, int type,
|
|
int secure)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bld->curr >= OSSL_PARAM_BLD_MAX) {
|
|
CRYPTOerr(CRYPTO_F_PARAM_PUSH, CRYPTO_R_TOO_MANY_RECORDS);
|
|
return NULL;
|
|
}
|
|
pd = bld->params + bld->curr++;
|
|
memset(pd, 0, sizeof(*pd));
|
|
pd->key = key;
|
|
pd->type = type;
|
|
pd->size = size;
|
|
pd->alloc_blocks = bytes_to_blocks(size);
|
|
if ((pd->secure = secure) != 0)
|
|
bld->secure_blocks += pd->alloc_blocks;
|
|
else
|
|
bld->total_blocks += pd->alloc_blocks;
|
|
return pd;
|
|
}
|
|
|
|
static int param_push_num(OSSL_PARAM_BLD *bld, const char *key,
|
|
void *num, size_t size, int type)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd = param_push(bld, key, size, size, type, 0);
|
|
|
|
if (pd == NULL)
|
|
return 0;
|
|
if (size > sizeof(pd->num)) {
|
|
CRYPTOerr(CRYPTO_F_PARAM_PUSH_NUM, CRYPTO_R_TOO_MANY_BYTES);
|
|
return 0;
|
|
}
|
|
memcpy(&pd->num, num, size);
|
|
return 1;
|
|
}
|
|
|
|
void ossl_param_bld_init(OSSL_PARAM_BLD *bld)
|
|
{
|
|
memset(bld, 0, sizeof(*bld));
|
|
}
|
|
|
|
int ossl_param_bld_push_int(OSSL_PARAM_BLD *bld, const char *key, int num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_uint(OSSL_PARAM_BLD *bld, const char *key,
|
|
unsigned int num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num),
|
|
OSSL_PARAM_UNSIGNED_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_long(OSSL_PARAM_BLD *bld, const char *key,
|
|
long int num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_ulong(OSSL_PARAM_BLD *bld, const char *key,
|
|
unsigned long int num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num),
|
|
OSSL_PARAM_UNSIGNED_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_int32(OSSL_PARAM_BLD *bld, const char *key,
|
|
int32_t num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_uint32(OSSL_PARAM_BLD *bld, const char *key,
|
|
uint32_t num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num),
|
|
OSSL_PARAM_UNSIGNED_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_int64(OSSL_PARAM_BLD *bld, const char *key,
|
|
int64_t num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_uint64(OSSL_PARAM_BLD *bld, const char *key,
|
|
uint64_t num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num),
|
|
OSSL_PARAM_UNSIGNED_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_size_t(OSSL_PARAM_BLD *bld, const char *key,
|
|
size_t num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num),
|
|
OSSL_PARAM_UNSIGNED_INTEGER);
|
|
}
|
|
|
|
int ossl_param_bld_push_double(OSSL_PARAM_BLD *bld, const char *key,
|
|
double num)
|
|
{
|
|
return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_REAL);
|
|
}
|
|
|
|
int ossl_param_bld_push_BN(OSSL_PARAM_BLD *bld, const char *key,
|
|
const BIGNUM *bn)
|
|
{
|
|
return ossl_param_bld_push_BN_pad(bld, key, bn,
|
|
bn == NULL ? 0 : BN_num_bytes(bn));
|
|
}
|
|
|
|
int ossl_param_bld_push_BN_pad(OSSL_PARAM_BLD *bld, const char *key,
|
|
const BIGNUM *bn, size_t sz)
|
|
{
|
|
int n, secure = 0;
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bn != NULL) {
|
|
n = BN_num_bytes(bn);
|
|
if (n < 0) {
|
|
CRYPTOerr(0, CRYPTO_R_ZERO_LENGTH_NUMBER);
|
|
return 0;
|
|
}
|
|
if (sz < (size_t)n) {
|
|
CRYPTOerr(0, CRYPTO_R_TOO_SMALL_BUFFER);
|
|
return 0;
|
|
}
|
|
if (BN_get_flags(bn, BN_FLG_SECURE) == BN_FLG_SECURE)
|
|
secure = 1;
|
|
}
|
|
pd = param_push(bld, key, sz, sz, OSSL_PARAM_UNSIGNED_INTEGER, secure);
|
|
if (pd == NULL)
|
|
return 0;
|
|
pd->bn = bn;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_param_bld_push_utf8_string(OSSL_PARAM_BLD *bld, const char *key,
|
|
const char *buf, size_t bsize)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bsize == 0) {
|
|
bsize = strlen(buf) + 1;
|
|
} else if (bsize > INT_MAX) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_STRING,
|
|
CRYPTO_R_STRING_TOO_LONG);
|
|
return 0;
|
|
}
|
|
pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_UTF8_STRING, 0);
|
|
if (pd == NULL)
|
|
return 0;
|
|
pd->string = buf;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_param_bld_push_utf8_ptr(OSSL_PARAM_BLD *bld, const char *key,
|
|
char *buf, size_t bsize)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bsize == 0) {
|
|
bsize = strlen(buf) + 1;
|
|
} else if (bsize > INT_MAX) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_PTR,
|
|
CRYPTO_R_STRING_TOO_LONG);
|
|
return 0;
|
|
}
|
|
pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_UTF8_PTR, 0);
|
|
if (pd == NULL)
|
|
return 0;
|
|
pd->string = buf;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_param_bld_push_octet_string(OSSL_PARAM_BLD *bld, const char *key,
|
|
const void *buf, size_t bsize)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bsize > INT_MAX) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_STRING,
|
|
CRYPTO_R_STRING_TOO_LONG);
|
|
return 0;
|
|
}
|
|
pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_OCTET_STRING, 0);
|
|
if (pd == NULL)
|
|
return 0;
|
|
pd->string = buf;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_param_bld_push_octet_ptr(OSSL_PARAM_BLD *bld, const char *key,
|
|
void *buf, size_t bsize)
|
|
{
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
|
|
if (bsize > INT_MAX) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_PTR,
|
|
CRYPTO_R_STRING_TOO_LONG);
|
|
return 0;
|
|
}
|
|
pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_OCTET_PTR, 0);
|
|
if (pd == NULL)
|
|
return 0;
|
|
pd->string = buf;
|
|
return 1;
|
|
}
|
|
|
|
static OSSL_PARAM *param_bld_convert(OSSL_PARAM_BLD *bld, OSSL_PARAM *param,
|
|
OSSL_PARAM_BLD_BLOCK *blk,
|
|
OSSL_PARAM_BLD_BLOCK *secure)
|
|
{
|
|
size_t i;
|
|
OSSL_PARAM_BLD_DEF *pd;
|
|
void *p;
|
|
|
|
for (i = 0; i < bld->curr; i++) {
|
|
pd = bld->params + i;
|
|
param[i].key = pd->key;
|
|
param[i].data_type = pd->type;
|
|
param[i].data_size = pd->size;
|
|
param[i].return_size = 0;
|
|
|
|
if (pd->secure) {
|
|
p = secure;
|
|
secure += pd->alloc_blocks;
|
|
} else {
|
|
p = blk;
|
|
blk += pd->alloc_blocks;
|
|
}
|
|
param[i].data = p;
|
|
if (pd->bn != NULL) {
|
|
/* BIGNUM */
|
|
BN_bn2nativepad(pd->bn, (unsigned char *)p, pd->size);
|
|
} else if (pd->type == OSSL_PARAM_OCTET_PTR
|
|
|| pd->type == OSSL_PARAM_UTF8_PTR) {
|
|
/* PTR */
|
|
*(const void **)p = pd->string;
|
|
} else if (pd->type == OSSL_PARAM_OCTET_STRING
|
|
|| pd->type == OSSL_PARAM_UTF8_STRING) {
|
|
if (pd->string != NULL)
|
|
memcpy(p, pd->string, pd->size);
|
|
else
|
|
memset(p, 0, pd->size);
|
|
} else {
|
|
/* Number, but could also be a NULL BIGNUM */
|
|
if (pd->size > sizeof(pd->num))
|
|
memset(p, 0, pd->size);
|
|
else if (pd->size > 0)
|
|
memcpy(p, &pd->num, pd->size);
|
|
}
|
|
}
|
|
param[i] = OSSL_PARAM_construct_end();
|
|
return param + i;
|
|
}
|
|
|
|
OSSL_PARAM *ossl_param_bld_to_param(OSSL_PARAM_BLD *bld)
|
|
{
|
|
OSSL_PARAM_BLD_BLOCK *blk, *s = NULL;
|
|
OSSL_PARAM *params, *last;
|
|
const size_t p_blks = bytes_to_blocks((1 + bld->curr) * sizeof(*params));
|
|
const size_t total = ALIGN_SIZE * (p_blks + bld->total_blocks);
|
|
const size_t ss = ALIGN_SIZE * bld->secure_blocks;
|
|
|
|
if (ss > 0) {
|
|
s = OPENSSL_secure_malloc(ss);
|
|
if (s == NULL) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM,
|
|
CRYPTO_R_SECURE_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
}
|
|
params = OPENSSL_malloc(total);
|
|
if (params == NULL) {
|
|
CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM, ERR_R_MALLOC_FAILURE);
|
|
OPENSSL_secure_free(s);
|
|
return NULL;
|
|
}
|
|
blk = p_blks + (OSSL_PARAM_BLD_BLOCK *)(params);
|
|
last = param_bld_convert(bld, params, blk, s);
|
|
last->data_size = ss;
|
|
last->data = s;
|
|
last->data_type = OSSL_PARAM_ALLOCATED_END;
|
|
return params;
|
|
}
|
|
|
|
void ossl_param_bld_free(OSSL_PARAM *params)
|
|
{
|
|
if (params != NULL) {
|
|
OSSL_PARAM *p;
|
|
|
|
for (p = params; p->key != NULL; p++)
|
|
;
|
|
if (p->data_type == OSSL_PARAM_ALLOCATED_END)
|
|
OPENSSL_secure_clear_free(p->data, p->data_size);
|
|
OPENSSL_free(params);
|
|
}
|
|
}
|