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Implement sk_deep_copy.

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This commit is contained in:
Viktor Dukhovni
2014-06-22 04:24:40 -04:00
parent 29edebe95c
commit 66d884f067
4 changed files with 141 additions and 7 deletions
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37
crypto/stack/stack.c
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@@ -112,6 +112,43 @@ err:
return(NULL);
}
_STACK *sk_deep_copy(_STACK *sk, void *(*copy_func)(void *),
void (*free_func)(void *))
{
_STACK *ret;
int i;
if ((ret = OPENSSL_malloc(sizeof(_STACK))) == NULL)
return ret;
ret->comp = sk->comp;
ret->sorted = sk->sorted;
ret->num = sk->num;
ret->num_alloc = sk->num > MIN_NODES ? sk->num : MIN_NODES;
ret->data = OPENSSL_malloc(sizeof(char *) * ret->num_alloc);
if (ret->data == NULL)
{
OPENSSL_free(ret);
return NULL;
}
for (i = 0; i < ret->num_alloc; i++)
ret->data[i] = NULL;
for (i = 0; i < ret->num; ++i)
{
if (sk->data[i] == NULL)
continue;
if ((ret->data[i] = copy_func(sk->data[i])) == NULL)
{
while (--i >= 0)
if (ret->data[i] != NULL)
free_func(ret->data[i]);
sk_free(ret);
return NULL;
}
}
return ret;
}
_STACK *sk_new_null(void)
{
return sk_new((int (*)(const void *, const void *))0);