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63132c53f9
openssl/crypto/params.c
Pauli 5b1d94c11c Fix some warnings from clang 10 in params.c 
clang 10 was emitting warnings similar to the following from params.c:

crypto/params.c:411:40: error: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Werror,-Wimplicit-int-float-conversion]
            if (d >= INT64_MIN && d <= INT64_MAX && d == (int64_t)d) {

Also fixed some other conversion problems when sizeof(double) == 4.

Alternative to #13366

Fixes #13365

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13377)
2020-11-19 21:13:57 +10:00

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/*
* Copyright 2019-2020 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/params.h>
#include "internal/thread_once.h"
#include "internal/numbers.h"
/*
* Return the number of bits in the mantissa of a double. This is used to
* shift a larger integral value to determine if it will exactly fit into a
* double.
*/
static unsigned int real_shift(void)
{
return sizeof(double) == 4 ? 24 : 53;
}
OSSL_PARAM *OSSL_PARAM_locate(OSSL_PARAM *p, const char *key)
{
if (p != NULL && key != NULL)
for (; p->key != NULL; p++)
if (strcmp(key, p->key) == 0)
return p;
return NULL;
}
const OSSL_PARAM *OSSL_PARAM_locate_const(const OSSL_PARAM *p, const char *key)
{
return OSSL_PARAM_locate((OSSL_PARAM *)p, key);
}
static OSSL_PARAM ossl_param_construct(const char *key, unsigned int data_type,
void *data, size_t data_size)
{
OSSL_PARAM res;
res.key = key;
res.data_type = data_type;
res.data = data;
res.data_size = data_size;
res.return_size = OSSL_PARAM_UNMODIFIED;
return res;
}
int OSSL_PARAM_modified(const OSSL_PARAM *p)
{
return p != NULL && p->return_size != OSSL_PARAM_UNMODIFIED;
}
void OSSL_PARAM_set_all_unmodified(OSSL_PARAM *p)
{
if (p != NULL)
while (p->key != NULL)
p++->return_size = OSSL_PARAM_UNMODIFIED;
}
int OSSL_PARAM_get_int(const OSSL_PARAM *p, int *val)
{
switch (sizeof(int)) {
case sizeof(int32_t):
return OSSL_PARAM_get_int32(p, (int32_t *)val);
case sizeof(int64_t):
return OSSL_PARAM_get_int64(p, (int64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_int(OSSL_PARAM *p, int val)
{
switch (sizeof(int)) {
case sizeof(int32_t):
return OSSL_PARAM_set_int32(p, (int32_t)val);
case sizeof(int64_t):
return OSSL_PARAM_set_int64(p, (int64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_int(const char *key, int *buf)
{
return ossl_param_construct(key, OSSL_PARAM_INTEGER, buf, sizeof(int));
}
int OSSL_PARAM_get_uint(const OSSL_PARAM *p, unsigned int *val)
{
switch (sizeof(unsigned int)) {
case sizeof(uint32_t):
return OSSL_PARAM_get_uint32(p, (uint32_t *)val);
case sizeof(uint64_t):
return OSSL_PARAM_get_uint64(p, (uint64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_uint(OSSL_PARAM *p, unsigned int val)
{
switch (sizeof(unsigned int)) {
case sizeof(uint32_t):
return OSSL_PARAM_set_uint32(p, (uint32_t)val);
case sizeof(uint64_t):
return OSSL_PARAM_set_uint64(p, (uint64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_uint(const char *key, unsigned int *buf)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER, buf,
sizeof(unsigned int));
}
int OSSL_PARAM_get_long(const OSSL_PARAM *p, long int *val)
{
switch (sizeof(long int)) {
case sizeof(int32_t):
return OSSL_PARAM_get_int32(p, (int32_t *)val);
case sizeof(int64_t):
return OSSL_PARAM_get_int64(p, (int64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_long(OSSL_PARAM *p, long int val)
{
switch (sizeof(long int)) {
case sizeof(int32_t):
return OSSL_PARAM_set_int32(p, (int32_t)val);
case sizeof(int64_t):
return OSSL_PARAM_set_int64(p, (int64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_long(const char *key, long int *buf)
{
return ossl_param_construct(key, OSSL_PARAM_INTEGER, buf, sizeof(long int));
}
int OSSL_PARAM_get_ulong(const OSSL_PARAM *p, unsigned long int *val)
{
switch (sizeof(unsigned long int)) {
case sizeof(uint32_t):
return OSSL_PARAM_get_uint32(p, (uint32_t *)val);
case sizeof(uint64_t):
return OSSL_PARAM_get_uint64(p, (uint64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_ulong(OSSL_PARAM *p, unsigned long int val)
{
switch (sizeof(unsigned long int)) {
case sizeof(uint32_t):
return OSSL_PARAM_set_uint32(p, (uint32_t)val);
case sizeof(uint64_t):
return OSSL_PARAM_set_uint64(p, (uint64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_ulong(const char *key, unsigned long int *buf)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER, buf,
sizeof(unsigned long int));
}
int OSSL_PARAM_get_int32(const OSSL_PARAM *p, int32_t *val)
{
int64_t i64;
uint32_t u32;
uint64_t u64;
double d;
if (val == NULL || p == NULL )
return 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
case sizeof(int32_t):
*val = *(const int32_t *)p->data;
return 1;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
if (i64 >= INT32_MIN && i64 <= INT32_MAX) {
*val = (int32_t)i64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
u32 = *(const uint32_t *)p->data;
if (u32 <= INT32_MAX) {
*val = (int32_t)u32;
return 1;
}
break;
case sizeof(uint64_t):
u64 = *(const uint64_t *)p->data;
if (u64 <= INT32_MAX) {
*val = (int32_t)u64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
if (d >= INT32_MIN && d <= INT32_MAX && d == (int32_t)d) {
*val = (int32_t)d;
return 1;
}
break;
}
}
return 0;
}
int OSSL_PARAM_set_int32(OSSL_PARAM *p, int32_t val)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
p->return_size = sizeof(int32_t); /* Minimum expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(int32_t):
*(int32_t *)p->data = val;
return 1;
case sizeof(int64_t):
p->return_size = sizeof(int64_t);
*(int64_t *)p->data = (int64_t)val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER && val >= 0) {
p->return_size = sizeof(uint32_t); /* Minimum expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(uint32_t):
*(uint32_t *)p->data = (uint32_t)val;
return 1;
case sizeof(uint64_t):
p->return_size = sizeof(uint64_t);
*(uint64_t *)p->data = (uint64_t)val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
*(double *)p->data = (double)val;
return 1;
}
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_int32(const char *key, int32_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_INTEGER, buf,
sizeof(int32_t));
}
int OSSL_PARAM_get_uint32(const OSSL_PARAM *p, uint32_t *val)
{
int32_t i32;
int64_t i64;
uint64_t u64;
double d;
if (val == NULL || p == NULL)
return 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
*val = *(const uint32_t *)p->data;
return 1;
case sizeof(uint64_t):
u64 = *(const uint64_t *)p->data;
if (u64 <= UINT32_MAX) {
*val = (uint32_t)u64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
case sizeof(int32_t):
i32 = *(const int32_t *)p->data;
if (i32 >= 0) {
*val = i32;
return 1;
}
break;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
if (i64 >= 0 && i64 <= UINT32_MAX) {
*val = (uint32_t)i64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
if (d >= 0 && d <= UINT32_MAX && d == (uint32_t)d) {
*val = (uint32_t)d;
return 1;
}
break;
}
}
return 0;
}
int OSSL_PARAM_set_uint32(OSSL_PARAM *p, uint32_t val)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
p->return_size = sizeof(uint32_t); /* Minimum expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(uint32_t):
*(uint32_t *)p->data = val;
return 1;
case sizeof(uint64_t):
p->return_size = sizeof(uint64_t);
*(uint64_t *)p->data = val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
p->return_size = sizeof(int32_t); /* Minimum expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(int32_t):
if (val <= INT32_MAX) {
*(int32_t *)p->data = (int32_t)val;
return 1;
}
break;
case sizeof(int64_t):
p->return_size = sizeof(int64_t);
*(int64_t *)p->data = (int64_t)val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
*(double *)p->data = (double)val;
return 1;
}
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_uint32(const char *key, uint32_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER, buf,
sizeof(uint32_t));
}
int OSSL_PARAM_get_int64(const OSSL_PARAM *p, int64_t *val)
{
uint64_t u64;
double d;
if (val == NULL || p == NULL )
return 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
case sizeof(int32_t):
*val = *(const int32_t *)p->data;
return 1;
case sizeof(int64_t):
*val = *(const int64_t *)p->data;
return 1;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
*val = *(const uint32_t *)p->data;
return 1;
case sizeof(uint64_t):
u64 = *(const uint64_t *)p->data;
if (u64 <= INT64_MAX) {
*val = (int64_t)u64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
if (d >= INT64_MIN
/*
* By subtracting 65535 (2^16-1) we cancel the low order
* 15 bits of INT64_MAX to avoid using imprecise floating
* point values.
*/
&& d < (double)(INT64_MAX - 65535) + 65536.0
&& d == (int64_t)d) {
*val = (int64_t)d;
return 1;
}
break;
}
}
return 0;
}
int OSSL_PARAM_set_int64(OSSL_PARAM *p, int64_t val)
{
uint64_t u64;
if (p == NULL)
return 0;
p->return_size = 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
p->return_size = sizeof(int64_t); /* Expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(int32_t):
if (val >= INT32_MIN && val <= INT32_MAX) {
p->return_size = sizeof(int32_t);
*(int32_t *)p->data = (int32_t)val;
return 1;
}
break;
case sizeof(int64_t):
*(int64_t *)p->data = val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER && val >= 0) {
p->return_size = sizeof(uint64_t); /* Expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(uint32_t):
if (val <= UINT32_MAX) {
p->return_size = sizeof(uint32_t);
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
break;
case sizeof(uint64_t):
*(uint64_t *)p->data = (uint64_t)val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
u64 = val < 0 ? -val : val;
if ((u64 >> real_shift()) == 0) {
*(double *)p->data = (double)val;
return 1;
}
break;
}
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_int64(const char *key, int64_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_INTEGER, buf, sizeof(int64_t));
}
int OSSL_PARAM_get_uint64(const OSSL_PARAM *p, uint64_t *val)
{
int32_t i32;
int64_t i64;
double d;
if (val == NULL || p == NULL)
return 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
*val = *(const uint32_t *)p->data;
return 1;
case sizeof(uint64_t):
*val = *(const uint64_t *)p->data;
return 1;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
case sizeof(int32_t):
i32 = *(const int32_t *)p->data;
if (i32 >= 0) {
*val = (uint64_t)i32;
return 1;
}
break;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
if (i64 >= 0) {
*val = (uint64_t)i64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
if (d >= 0
/*
* By subtracting 65535 (2^16-1) we cancel the low order
* 15 bits of UINT64_MAX to avoid using imprecise floating
* point values.
*/
&& d < (double)(UINT64_MAX - 65535) + 65536.0
&& d == (uint64_t)d) {
*val = (uint64_t)d;
return 1;
}
break;
}
}
return 0;
}
int OSSL_PARAM_set_uint64(OSSL_PARAM *p, uint64_t val)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
p->return_size = sizeof(uint64_t); /* Expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(uint32_t):
if (val <= UINT32_MAX) {
p->return_size = sizeof(uint32_t);
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
break;
case sizeof(uint64_t):
*(uint64_t *)p->data = val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
p->return_size = sizeof(int64_t); /* Expected size */
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(int32_t):
if (val <= INT32_MAX) {
p->return_size = sizeof(int32_t);
*(int32_t *)p->data = (int32_t)val;
return 1;
}
break;
case sizeof(int64_t):
if (val <= INT64_MAX) {
*(int64_t *)p->data = (int64_t)val;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_REAL) {
p->return_size = sizeof(double);
switch (p->data_size) {
case sizeof(double):
if ((val >> real_shift()) == 0) {
*(double *)p->data = (double)val;
return 1;
}
break;
}
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_uint64(const char *key, uint64_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER, buf,
sizeof(uint64_t));
}
int OSSL_PARAM_get_size_t(const OSSL_PARAM *p, size_t *val)
{
switch (sizeof(size_t)) {
case sizeof(uint32_t):
return OSSL_PARAM_get_uint32(p, (uint32_t *)val);
case sizeof(uint64_t):
return OSSL_PARAM_get_uint64(p, (uint64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_size_t(OSSL_PARAM *p, size_t val)
{
switch (sizeof(size_t)) {
case sizeof(uint32_t):
return OSSL_PARAM_set_uint32(p, (uint32_t)val);
case sizeof(uint64_t):
return OSSL_PARAM_set_uint64(p, (uint64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_size_t(const char *key, size_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER, buf,
sizeof(size_t));
}
int OSSL_PARAM_get_time_t(const OSSL_PARAM *p, time_t *val)
{
switch (sizeof(time_t)) {
case sizeof(int32_t):
return OSSL_PARAM_get_int32(p, (int32_t *)val);
case sizeof(int64_t):
return OSSL_PARAM_get_int64(p, (int64_t *)val);
}
return 0;
}
int OSSL_PARAM_set_time_t(OSSL_PARAM *p, time_t val)
{
switch (sizeof(time_t)) {
case sizeof(int32_t):
return OSSL_PARAM_set_int32(p, (int32_t)val);
case sizeof(int64_t):
return OSSL_PARAM_set_int64(p, (int64_t)val);
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_time_t(const char *key, time_t *buf)
{
return ossl_param_construct(key, OSSL_PARAM_INTEGER, buf, sizeof(time_t));
}
int OSSL_PARAM_get_BN(const OSSL_PARAM *p, BIGNUM **val)
{
BIGNUM *b;
if (val == NULL
|| p == NULL
|| p->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
return 0;
b = BN_native2bn(p->data, (int)p->data_size, *val);
if (b != NULL) {
*val = b;
return 1;
}
return 0;
}
int OSSL_PARAM_set_BN(OSSL_PARAM *p, const BIGNUM *val)
{
size_t bytes;
if (p == NULL)
return 0;
p->return_size = 0;
if (val == NULL || p->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
return 0;
/* For the moment, only positive values are permitted */
if (BN_is_negative(val))
return 0;
bytes = (size_t)BN_num_bytes(val);
p->return_size = bytes;
if (p->data == NULL)
return 1;
if (p->data_size >= bytes) {
p->return_size = p->data_size;
return BN_bn2nativepad(val, p->data, p->data_size) >= 0;
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_BN(const char *key, unsigned char *buf,
size_t bsize)
{
return ossl_param_construct(key, OSSL_PARAM_UNSIGNED_INTEGER,
buf, bsize);
}
int OSSL_PARAM_get_double(const OSSL_PARAM *p, double *val)
{
int64_t i64;
uint64_t u64;
if (val == NULL || p == NULL)
return 0;
if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
case sizeof(double):
*val = *(const double *)p->data;
return 1;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
*val = *(const uint32_t *)p->data;
return 1;
case sizeof(uint64_t):
u64 = *(const uint64_t *)p->data;
if ((u64 >> real_shift()) == 0) {
*val = (double)u64;
return 1;
}
break;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
case sizeof(int32_t):
*val = *(const int32_t *)p->data;
return 1;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
u64 = i64 < 0 ? -i64 : i64;
if ((u64 >> real_shift()) == 0) {
*val = 0.0 + i64;
return 1;
}
break;
}
}
return 0;
}
int OSSL_PARAM_set_double(OSSL_PARAM *p, double val)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (p->data_type == OSSL_PARAM_REAL) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
*(double *)p->data = val;
return 1;
}
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER
&& val == (ossl_uintmax_t)val) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(uint32_t):
if (val >= 0 && val <= UINT32_MAX) {
p->return_size = sizeof(uint32_t);
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
break;
case sizeof(uint64_t):
if (val >= 0
/*
* By subtracting 65535 (2^16-1) we cancel the low order
* 15 bits of UINT64_MAX to avoid using imprecise floating
* point values.
*/
&& (double)(UINT64_MAX - 65535) + 65536.0) {
p->return_size = sizeof(uint64_t);
*(uint64_t *)p->data = (uint64_t)val;
return 1;
}
break; }
} else if (p->data_type == OSSL_PARAM_INTEGER && val == (ossl_intmax_t)val) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(int32_t):
if (val >= INT32_MIN && val <= INT32_MAX) {
p->return_size = sizeof(int32_t);
*(int32_t *)p->data = (int32_t)val;
return 1;
}
break;
case sizeof(int64_t):
if (val >= INT64_MIN
/*
* By subtracting 65535 (2^16-1) we cancel the low order
* 15 bits of INT64_MAX to avoid using imprecise floating
* point values.
*/
&& val < (double)(INT64_MAX - 65535) + 65536.0) {
p->return_size = sizeof(int64_t);
*(int64_t *)p->data = (int64_t)val;
return 1;
}
break;
}
}
return 0;
}
OSSL_PARAM OSSL_PARAM_construct_double(const char *key, double *buf)
{
return ossl_param_construct(key, OSSL_PARAM_REAL, buf, sizeof(double));
}
static int get_string_internal(const OSSL_PARAM *p, void **val, size_t max_len,
size_t *used_len, unsigned int type)
{
size_t sz;
if ((val == NULL && used_len == NULL) || p == NULL || p->data_type != type)
return 0;
sz = p->data_size;
if (used_len != NULL)
*used_len = sz;
if (p->data == NULL)
return 0;
if (val == NULL)
return 1;
if (*val == NULL) {
char *const q = OPENSSL_malloc(sz > 0 ? sz : 1);
if (q == NULL)
return 0;
*val = q;
if (sz != 0)
memcpy(q, p->data, sz);
return 1;
}
if (max_len < sz)
return 0;
memcpy(*val, p->data, sz);
return 1;
}
int OSSL_PARAM_get_utf8_string(const OSSL_PARAM *p, char **val, size_t max_len)
{
return get_string_internal(p, (void **)val, max_len, NULL,
OSSL_PARAM_UTF8_STRING);
}
int OSSL_PARAM_get_octet_string(const OSSL_PARAM *p, void **val, size_t max_len,
size_t *used_len)
{
return get_string_internal(p, val, max_len, used_len,
OSSL_PARAM_OCTET_STRING);
}
static int set_string_internal(OSSL_PARAM *p, const void *val, size_t len,
unsigned int type)
{
p->return_size = len;
if (p->data == NULL)
return 1;
if (p->data_type != type || p->data_size < len)
return 0;
memcpy(p->data, val, len);
return 1;
}
int OSSL_PARAM_set_utf8_string(OSSL_PARAM *p, const char *val)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (val == NULL)
return 0;
return set_string_internal(p, val, strlen(val) + 1, OSSL_PARAM_UTF8_STRING);
}
int OSSL_PARAM_set_octet_string(OSSL_PARAM *p, const void *val,
size_t len)
{
if (p == NULL)
return 0;
p->return_size = 0;
if (val == NULL)
return 0;
return set_string_internal(p, val, len, OSSL_PARAM_OCTET_STRING);
}
OSSL_PARAM OSSL_PARAM_construct_utf8_string(const char *key, char *buf,
size_t bsize)
{
if (buf != NULL && bsize == 0)
bsize = strlen(buf) + 1;
return ossl_param_construct(key, OSSL_PARAM_UTF8_STRING, buf, bsize);
}
OSSL_PARAM OSSL_PARAM_construct_octet_string(const char *key, void *buf,
size_t bsize)
{
return ossl_param_construct(key, OSSL_PARAM_OCTET_STRING, buf, bsize);
}
static int get_ptr_internal(const OSSL_PARAM *p, const void **val,
size_t *used_len, unsigned int type)
{
if (val == NULL || p == NULL || p->data_type != type)
return 0;
if (used_len != NULL)
*used_len = p->data_size;
*val = *(const void **)p->data;
return 1;
}
int OSSL_PARAM_get_utf8_ptr(const OSSL_PARAM *p, const char **val)
{
return get_ptr_internal(p, (const void **)val, NULL, OSSL_PARAM_UTF8_PTR);
}
int OSSL_PARAM_get_octet_ptr(const OSSL_PARAM *p, const void **val,
size_t *used_len)
{
return get_ptr_internal(p, val, used_len, OSSL_PARAM_OCTET_PTR);
}
static int set_ptr_internal(OSSL_PARAM *p, const void *val,
unsigned int type, size_t len)
{
p->return_size = len;
if (p->data_type != type)
return 0;
if (p->data != NULL)
*(const void **)p->data = val;
return 1;
}
int OSSL_PARAM_set_utf8_ptr(OSSL_PARAM *p, const char *val)
{
if (p == NULL)
return 0;
p->return_size = 0;
return set_ptr_internal(p, val, OSSL_PARAM_UTF8_PTR,
val == NULL ? 0 : strlen(val) + 1);
}
int OSSL_PARAM_set_octet_ptr(OSSL_PARAM *p, const void *val,
size_t used_len)
{
if (p == NULL)
return 0;
p->return_size = 0;
return set_ptr_internal(p, val, OSSL_PARAM_OCTET_PTR, used_len);
}
OSSL_PARAM OSSL_PARAM_construct_utf8_ptr(const char *key, char **buf,
size_t bsize)
{
return ossl_param_construct(key, OSSL_PARAM_UTF8_PTR, buf, bsize);
}
OSSL_PARAM OSSL_PARAM_construct_octet_ptr(const char *key, void **buf,
size_t bsize)
{
return ossl_param_construct(key, OSSL_PARAM_OCTET_PTR, buf, bsize);
}
OSSL_PARAM OSSL_PARAM_construct_end(void)
{
OSSL_PARAM end = OSSL_PARAM_END;
return end;
}
static int get_string_ptr_internal(const OSSL_PARAM *p, const void **val,
size_t *used_len, unsigned int type)
{
if (val == NULL || p == NULL || p->data_type != type)
return 0;
if (used_len != NULL)
*used_len = p->data_size;
*val = p->data;
return 1;
}
int OSSL_PARAM_get_utf8_string_ptr(const OSSL_PARAM *p, const char **val)
{
return OSSL_PARAM_get_utf8_ptr(p, val)
|| get_string_ptr_internal(p, (const void **)val, NULL,
OSSL_PARAM_UTF8_STRING);
}
int OSSL_PARAM_get_octet_string_ptr(const OSSL_PARAM *p, const void **val,
size_t *used_len)
{
return OSSL_PARAM_get_octet_ptr(p, val, used_len)
|| get_string_ptr_internal(p, val, used_len, OSSL_PARAM_OCTET_STRING);
}
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