/*
- * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2023 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
#include <string.h>
#include <openssl/params.h>
+#include <openssl/err.h>
#include "internal/thread_once.h"
#include "internal/numbers.h"
#include "internal/endian.h"
-
+#include "internal/params.h"
+#include "internal/packet.h"
+
+/* Shortcuts for raising errors that are widely used */
+#define err_unsigned_negative \
+ ERR_raise(ERR_LIB_CRYPTO, \
+ CRYPTO_R_PARAM_UNSIGNED_INTEGER_NEGATIVE_VALUE_UNSUPPORTED)
+#define err_out_of_range \
+ ERR_raise(ERR_LIB_CRYPTO, \
+ CRYPTO_R_PARAM_VALUE_TOO_LARGE_FOR_DESTINATION)
+#define err_inexact \
+ ERR_raise(ERR_LIB_CRYPTO, \
+ CRYPTO_R_PARAM_CANNOT_BE_REPRESENTED_EXACTLY)
+#define err_not_integer \
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PARAM_NOT_INTEGER_TYPE)
+#define err_too_small \
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_TOO_SMALL_BUFFER)
+#define err_bad_type \
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PARAM_OF_INCOMPATIBLE_TYPE)
+#define err_null_argument \
+ ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER)
+#define err_unsupported_real \
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_PARAM_UNSUPPORTED_FLOATING_POINT_FORMAT)
+
+#ifndef OPENSSL_SYS_UEFI
/*
* 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
{
return sizeof(double) == 4 ? 24 : 53;
}
+#endif
OSSL_PARAM *OSSL_PARAM_locate(OSSL_PARAM *p, const char *key)
{
* Shortening a signed value must retain the correct sign.
* Avoiding this kind of thing: -253 = 0xff03 -> 0x03 = 3
*/
- || (signed_int && ((pad ^ src[n]) & 0x80) != 0))
+ || (signed_int && ((pad ^ src[n]) & 0x80) != 0)) {
+ err_out_of_range;
return 0;
+ }
memcpy(dest, src + n, dest_len);
}
} else /* IS_LITTLE_ENDIAN */ {
* Shortening a signed value must retain the correct sign.
* Avoiding this kind of thing: 130 = 0x0082 -> 0x82 = -126
*/
- || (signed_int && ((pad ^ src[dest_len - 1]) & 0x80) != 0))
+ || (signed_int && ((pad ^ src[dest_len - 1]) & 0x80) != 0)) {
+ err_out_of_range;
return 0;
+ }
memcpy(dest, src, dest_len);
}
}
static int unsigned_from_signed(void *dest, size_t dest_len,
const void *src, size_t src_len)
{
- if (is_negative(src, src_len))
+ if (is_negative(src, src_len)) {
+ err_unsigned_negative;
return 0;
+ }
return copy_integer(dest, dest_len, src, src_len, 0, 0);
}
return signed_from_signed(val, val_size, p->data, p->data_size);
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER)
return signed_from_unsigned(val, val_size, p->data, p->data_size);
+ err_not_integer;
return 0;
}
r = signed_from_signed(p->data, p->data_size, val, val_size);
else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER)
r = unsigned_from_signed(p->data, p->data_size, val, val_size);
+ else
+ err_not_integer;
p->return_size = r ? p->data_size : val_size;
return r;
}
return unsigned_from_signed(val, val_size, p->data, p->data_size);
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER)
return unsigned_from_unsigned(val, val_size, p->data, p->data_size);
+ err_not_integer;
return 0;
}
r = signed_from_unsigned(p->data, p->data_size, val, val_size);
else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER)
r = unsigned_from_unsigned(p->data, p->data_size, val, val_size);
+ else
+ err_not_integer;
p->return_size = r ? p->data_size : val_size;
return r;
}
int OSSL_PARAM_get_int32(const OSSL_PARAM *p, int32_t *val)
{
- double d;
-
- if (val == NULL || p == NULL )
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
if (p->data_type == OSSL_PARAM_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
*val = (int32_t)i64;
return 1;
}
+ err_out_of_range;
return 0;
}
#endif
*val = (int32_t)u32;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(uint64_t):
u64 = *(const uint64_t *)p->data;
*val = (int32_t)u64;
return 1;
}
+ err_out_of_range;
return 0;
}
#endif
return general_get_int(p, val, sizeof(*val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
+ double d;
+
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
*val = (int32_t)d;
return 1;
}
- break;
+ err_out_of_range;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_set_int32(OSSL_PARAM *p, int32_t val)
{
- if (p == NULL)
+ uint32_t u32;
+ unsigned int shift;
+
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
#endif
return general_set_int(p, &val, sizeof(val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
+ shift = real_shift();
+ if (shift < 8 * sizeof(val) - 1) {
+ u32 = val < 0 ? -val : val;
+ if ((u32 >> shift) != 0) {
+ err_inexact;
+ return 0;
+ }
+ }
*(double *)p->data = (double)val;
return 1;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_get_uint32(const OSSL_PARAM *p, uint32_t *val)
{
- double d;
-
- if (val == NULL || p == NULL)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
*val = (uint32_t)u64;
return 1;
}
+ err_out_of_range;
return 0;
}
#endif
*val = i32;
return 1;
}
+ err_unsigned_negative;
return 0;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
*val = (uint32_t)i64;
return 1;
}
+ if (i64 < 0)
+ err_unsigned_negative;
+ else
+ err_out_of_range;
return 0;
}
#endif
return general_get_uint(p, val, sizeof(*val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
+ double d;
+
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
*val = (uint32_t)d;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_set_uint32(OSSL_PARAM *p, uint32_t val)
{
- if (p == NULL)
+ unsigned int shift;
+
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
*(int32_t *)p->data = (int32_t)val;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(int64_t):
p->return_size = sizeof(int64_t);
#endif
return general_set_uint(p, &val, sizeof(val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
switch (p->data_size) {
case sizeof(double):
+ shift = real_shift();
+ if (shift < 8 * sizeof(val) && (val >> shift) != 0) {
+ err_inexact;
+ return 0;
+ }
*(double *)p->data = (double)val;
return 1;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_get_int64(const OSSL_PARAM *p, int64_t *val)
{
- double d;
-
- if (val == NULL || p == NULL )
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
if (p->data_type == OSSL_PARAM_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
*val = (int64_t)u64;
return 1;
}
+ err_out_of_range;
return 0;
}
#endif
return general_get_int(p, val, sizeof(*val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
+ double d;
+
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
*val = (int64_t)d;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_set_int64(OSSL_PARAM *p, int64_t val)
{
- uint64_t u64;
-
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
if (p->data_type == OSSL_PARAM_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
*(int32_t *)p->data = (int32_t)val;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(int64_t):
*(int64_t *)p->data = val;
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(uint64_t):
*(uint64_t *)p->data = (uint64_t)val;
#endif
return general_set_int(p, &val, sizeof(val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
+ uint64_t u64;
+
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
*(double *)p->data = (double)val;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_get_uint64(const OSSL_PARAM *p, uint64_t *val)
{
- double d;
-
- if (val == NULL || p == NULL)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
#ifndef OPENSSL_SMALL_FOOTPRINT
*val = (uint64_t)i32;
return 1;
}
+ err_unsigned_negative;
return 0;
case sizeof(int64_t):
i64 = *(const int64_t *)p->data;
*val = (uint64_t)i64;
return 1;
}
+ err_unsigned_negative;
return 0;
}
#endif
return general_get_uint(p, val, sizeof(*val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
+ double d;
+
switch (p->data_size) {
case sizeof(double):
d = *(const double *)p->data;
*val = (uint64_t)d;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_set_uint64(OSSL_PARAM *p, uint64_t val)
{
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(uint64_t):
*(uint64_t *)p->data = val;
*(int32_t *)p->data = (int32_t)val;
return 1;
}
+ err_out_of_range;
return 0;
case sizeof(int64_t):
if (val <= INT64_MAX) {
*(int64_t *)p->data = (int64_t)val;
return 1;
}
+ err_out_of_range;
return 0;
}
#endif
return general_set_uint(p, &val, sizeof(val));
} else if (p->data_type == OSSL_PARAM_REAL) {
+#ifndef OPENSSL_SYS_UEFI
p->return_size = sizeof(double);
switch (p->data_size) {
case sizeof(double):
*(double *)p->data = (double)val;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
+ err_unsupported_real;
+ return 0;
+#endif
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_get_BN(const OSSL_PARAM *p, BIGNUM **val)
{
- BIGNUM *b;
+ BIGNUM *b = NULL;
- if (val == NULL
- || p == NULL
- || p->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
- b = BN_native2bn(p->data, (int)p->data_size, *val);
- if (b != NULL) {
- *val = b;
- return 1;
+ switch (p->data_type) {
+ case OSSL_PARAM_UNSIGNED_INTEGER:
+ b = BN_native2bn(p->data, (int)p->data_size, *val);
+ break;
+ case OSSL_PARAM_INTEGER:
+ b = BN_signed_native2bn(p->data, (int)p->data_size, *val);
+ break;
+ default:
+ err_bad_type;
+ break;
}
- return 0;
+
+ if (b == NULL) {
+ ERR_raise(ERR_LIB_CRYPTO, ERR_R_BN_LIB);
+ return 0;
+ }
+
+ *val = b;
+ return 1;
}
int OSSL_PARAM_set_BN(OSSL_PARAM *p, const BIGNUM *val)
{
size_t bytes;
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
- if (val == NULL || p->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
+ if (val == NULL) {
+ err_null_argument;
return 0;
-
- /* For the moment, only positive values are permitted */
- if (BN_is_negative(val))
+ }
+ if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER && BN_is_negative(val)) {
+ err_bad_type;
return 0;
+ }
bytes = (size_t)BN_num_bytes(val);
+ /* We add 1 byte for signed numbers, to make space for a sign extension */
+ if (p->data_type == OSSL_PARAM_INTEGER)
+ bytes++;
+ /* We make sure that at least one byte is used, so zero is properly set */
+ if (bytes == 0)
+ bytes++;
+
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;
+
+ switch (p->data_type) {
+ case OSSL_PARAM_UNSIGNED_INTEGER:
+ if (BN_bn2nativepad(val, p->data, p->data_size) >= 0)
+ return 1;
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_INTEGER_OVERFLOW);
+ break;
+ case OSSL_PARAM_INTEGER:
+ if (BN_signed_bn2native(val, p->data, p->data_size) >= 0)
+ return 1;
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_INTEGER_OVERFLOW);
+ break;
+ default:
+ err_bad_type;
+ break;
+ }
+ return 0;
}
+ err_too_small;
return 0;
}
buf, bsize);
}
+#ifndef OPENSSL_SYS_UEFI
int OSSL_PARAM_get_double(const OSSL_PARAM *p, double *val)
{
int64_t i64;
uint64_t u64;
- if (val == NULL || p == NULL)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
if (p->data_type == OSSL_PARAM_REAL) {
switch (p->data_size) {
*val = *(const double *)p->data;
return 1;
}
+ err_unsupported_real;
+ return 0;
} else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
switch (p->data_size) {
case sizeof(uint32_t):
*val = (double)u64;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
} else if (p->data_type == OSSL_PARAM_INTEGER) {
switch (p->data_size) {
*val = 0.0 + i64;
return 1;
}
- break;
+ err_inexact;
+ return 0;
}
}
+ err_bad_type;
return 0;
}
int OSSL_PARAM_set_double(OSSL_PARAM *p, double val)
{
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
if (p->data_type == OSSL_PARAM_REAL) {
*(double *)p->data = val;
return 1;
}
- } else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER
- && val == (ossl_uintmax_t)val) {
+ err_unsupported_real;
+ return 0;
+ } else if (p->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
+ if (val != (uint64_t)val) {
+ err_inexact;
+ return 0;
+ }
switch (p->data_size) {
case sizeof(uint32_t):
if (val >= 0 && val <= UINT32_MAX) {
*(uint32_t *)p->data = (uint32_t)val;
return 1;
}
- break;
+ err_out_of_range;
+ return 0;
case sizeof(uint64_t):
if (val >= 0
/*
* 15 bits of UINT64_MAX to avoid using imprecise floating
* point values.
*/
- && (double)(UINT64_MAX - 65535) + 65536.0) {
+ && val < (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) {
+ err_out_of_range;
+ return 0;
+ }
+ } else if (p->data_type == OSSL_PARAM_INTEGER) {
p->return_size = sizeof(double);
if (p->data == NULL)
return 1;
+ if (val != (int64_t)val) {
+ err_inexact;
+ return 0;
+ }
switch (p->data_size) {
case sizeof(int32_t):
if (val >= INT32_MIN && val <= INT32_MAX) {
*(int32_t *)p->data = (int32_t)val;
return 1;
}
- break;
+ err_out_of_range;
+ return 0;
case sizeof(int64_t):
if (val >= INT64_MIN
/*
*(int64_t *)p->data = (int64_t)val;
return 1;
}
- break;
+ err_out_of_range;
+ return 0;
}
}
+ err_bad_type;
return 0;
}
{
return ossl_param_construct(key, OSSL_PARAM_REAL, buf, sizeof(double));
}
+#endif
static int get_string_internal(const OSSL_PARAM *p, void **val,
size_t *max_len, size_t *used_len,
{
size_t sz, alloc_sz;
- if ((val == NULL && used_len == NULL) || p == NULL || p->data_type != type)
+ if ((val == NULL && used_len == NULL) || p == NULL) {
+ err_null_argument;
return 0;
+ }
+ if (p->data_type != type) {
+ err_bad_type;
+ return 0;
+ }
sz = p->data_size;
/*
if (used_len != NULL)
*used_len = sz;
- if (p->data == NULL)
+ if (p->data == NULL) {
+ err_null_argument;
return 0;
+ }
if (val == NULL)
return 1;
*max_len = alloc_sz;
}
- if (*max_len < sz)
+ if (*max_len < sz) {
+ err_too_small;
return 0;
+ }
memcpy(*val, p->data, sz);
return 1;
}
*/
size_t data_length = p->data_size;
+ if (ret == 0)
+ return 0;
if (data_length >= max_len)
data_length = OPENSSL_strnlen(p->data, data_length);
- if (data_length >= max_len)
+ if (data_length >= max_len) {
+ ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_NO_SPACE_FOR_TERMINATING_NULL);
return 0; /* No space for a terminating NUL byte */
- ((char *)*val)[data_length] = '\0';
+ }
+ (*val)[data_length] = '\0';
return ret;
}
p->return_size = len;
if (p->data == NULL)
return 1;
- if (p->data_type != type || p->data_size < len)
+ if (p->data_type != type) {
+ err_bad_type;
return 0;
+ }
+ if (p->data_size < len) {
+ err_too_small;
+ return 0;
+ }
memcpy(p->data, val, len);
/* If possible within the size of p->data, add a NUL terminator byte */
int OSSL_PARAM_set_utf8_string(OSSL_PARAM *p, const char *val)
{
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
- if (val == NULL)
+ if (val == NULL) {
+ err_null_argument;
return 0;
+ }
return set_string_internal(p, val, strlen(val), OSSL_PARAM_UTF8_STRING);
}
int OSSL_PARAM_set_octet_string(OSSL_PARAM *p, const void *val,
size_t len)
{
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
- if (val == NULL)
+ if (val == NULL) {
+ err_null_argument;
return 0;
+ }
return set_string_internal(p, val, len, OSSL_PARAM_OCTET_STRING);
}
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)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
+ if (p->data_type != type) {
+ err_bad_type;
+ return 0;
+ }
if (used_len != NULL)
*used_len = p->data_size;
*val = *(const void **)p->data;
unsigned int type, size_t len)
{
p->return_size = len;
- if (p->data_type != type)
+ if (p->data_type != type) {
+ err_bad_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)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
return set_ptr_internal(p, val, OSSL_PARAM_UTF8_PTR,
val == NULL ? 0 : strlen(val));
int OSSL_PARAM_set_octet_ptr(OSSL_PARAM *p, const void *val,
size_t used_len)
{
- if (p == NULL)
+ if (p == NULL) {
+ err_null_argument;
return 0;
+ }
p->return_size = 0;
return set_ptr_internal(p, val, OSSL_PARAM_OCTET_PTR, used_len);
}
return ossl_param_construct(key, OSSL_PARAM_OCTET_PTR, buf, bsize);
}
+/*
+ * Extract the parameter into an allocated buffer.
+ * Any existing allocation in *out is cleared and freed.
+ *
+ * Returns 1 on success, 0 on failure and -1 if there are no matching params.
+ *
+ * *out and *out_len are guaranteed to be untouched if this function
+ * doesn't return success.
+ */
+int ossl_param_get1_octet_string(const OSSL_PARAM *params, const char *name,
+ unsigned char **out, size_t *out_len)
+{
+ const OSSL_PARAM *p = OSSL_PARAM_locate_const(params, name);
+ void *buf = NULL;
+ size_t len = 0;
+
+ if (p == NULL)
+ return -1;
+
+ if (p->data != NULL
+ && p->data_size > 0
+ && !OSSL_PARAM_get_octet_string(p, &buf, 0, &len))
+ return 0;
+
+ OPENSSL_clear_free(*out, *out_len);
+ *out = buf;
+ *out_len = len;
+ return 1;
+}
+
+static int setbuf_fromparams(const OSSL_PARAM *p, const char *name,
+ unsigned char *out, size_t *outlen)
+{
+ int ret = 0;
+ WPACKET pkt;
+
+ if (out == NULL) {
+ if (!WPACKET_init_null(&pkt, 0))
+ return 0;
+ } else {
+ if (!WPACKET_init_static_len(&pkt, out, *outlen, 0))
+ return 0;
+ }
+
+ for (; p != NULL; p = OSSL_PARAM_locate_const(p + 1, name)) {
+ if (p->data_type != OSSL_PARAM_OCTET_STRING)
+ goto err;
+ if (p->data != NULL
+ && p->data_size != 0
+ && !WPACKET_memcpy(&pkt, p->data, p->data_size))
+ goto err;
+ }
+ if (!WPACKET_get_total_written(&pkt, outlen)
+ || !WPACKET_finish(&pkt))
+ goto err;
+ ret = 1;
+err:
+ WPACKET_cleanup(&pkt);
+ return ret;
+}
+
+int ossl_param_get1_concat_octet_string(const OSSL_PARAM *params, const char *name,
+ unsigned char **out,
+ size_t *out_len, size_t maxsize)
+{
+ const OSSL_PARAM *p = OSSL_PARAM_locate_const(params, name);
+ unsigned char *res;
+ size_t sz = 0;
+
+ if (p == NULL)
+ return -1;
+
+ /* Calculate the total size */
+ if (!setbuf_fromparams(p, name, NULL, &sz))
+ return 0;
+
+ /* Check that it's not oversized */
+ if (maxsize > 0 && sz > maxsize)
+ return 0;
+
+ /* Special case zero length */
+ if (sz == 0) {
+ if ((res = OPENSSL_zalloc(1)) == NULL)
+ return 0;
+ goto fin;
+ }
+
+ /* Allocate the buffer */
+ res = OPENSSL_malloc(sz);
+ if (res == NULL)
+ return 0;
+
+ /* Concat one or more OSSL_KDF_PARAM_INFO fields */
+ if (!setbuf_fromparams(p, name, res, &sz)) {
+ OPENSSL_clear_free(res, sz);
+ return 0;
+ }
+
+ fin:
+ OPENSSL_clear_free(*out, *out_len);
+ *out = res;
+ *out_len = sz;
+ return 1;
+}
+
OSSL_PARAM OSSL_PARAM_construct_end(void)
{
OSSL_PARAM end = OSSL_PARAM_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)
+ if (val == NULL || p == NULL) {
+ err_null_argument;
return 0;
+ }
+ if (p->data_type != type) {
+ err_bad_type;
+ return 0;
+ }
if (used_len != NULL)
*used_len = p->data_size;
*val = p->data;
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 rv;
+
+ ERR_set_mark();
+ rv = OSSL_PARAM_get_utf8_ptr(p, val);
+ ERR_pop_to_mark();
+
+ return rv || 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);
-}
+ int rv;
+ ERR_set_mark();
+ rv = OSSL_PARAM_get_octet_ptr(p, val, used_len);
+ ERR_pop_to_mark();
+
+ return rv || get_string_ptr_internal(p, val, used_len,
+ OSSL_PARAM_OCTET_STRING);
+}
projects / thirdparty / openssl.git / blobdiff