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/*
* Copyright (c) 2018 Yubico AB. All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the LICENSE file.
*/
#include <string.h>
#include "fido.h"
fido_blob_t *
fido_blob_new(void)
{
return (calloc(1, sizeof(fido_blob_t)));
}
int
fido_blob_set(fido_blob_t *b, const unsigned char *ptr, size_t len)
{
if (b->ptr != NULL) {
explicit_bzero(b->ptr, b->len);
free(b->ptr);
b->ptr = NULL;
}
b->len = 0;
if (ptr == NULL || len == 0) {
fido_log_debug("%s: ptr=%p, len=%zu", __func__,
(const void *)ptr, len);
return (-1);
}
if ((b->ptr = malloc(len)) == NULL) {
fido_log_debug("%s: malloc", __func__);
return (-1);
}
memcpy(b->ptr, ptr, len);
b->len = len;
return (0);
}
void
fido_blob_free(fido_blob_t **bp)
{
fido_blob_t *b;
if (bp == NULL || (b = *bp) == NULL)
return;
if (b->ptr) {
explicit_bzero(b->ptr, b->len);
free(b->ptr);
}
explicit_bzero(b, sizeof(*b));
free(b);
*bp = NULL;
}
void
fido_free_blob_array(fido_blob_array_t *array)
{
if (array->ptr == NULL)
return;
for (size_t i = 0; i < array->len; i++) {
fido_blob_t *b = &array->ptr[i];
if (b->ptr != NULL) {
explicit_bzero(b->ptr, b->len);
free(b->ptr);
b->ptr = NULL;
}
}
free(array->ptr);
array->ptr = NULL;
array->len = 0;
}
cbor_item_t *
fido_blob_encode(const fido_blob_t *b)
{
if (b == NULL || b->ptr == NULL)
return (NULL);
return (cbor_build_bytestring(b->ptr, b->len));
}
int
fido_blob_decode(const cbor_item_t *item, fido_blob_t *b)
{
return (cbor_bytestring_copy(item, &b->ptr, &b->len));
}
int
fido_blob_is_empty(const fido_blob_t *b)
{
return (b->ptr == NULL || b->len == 0);
}
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