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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "ssl_stack.h"
#include "ssl_dbg.h"
#include "ssl_port.h"
#ifndef CONFIG_MIN_NODES
#define MIN_NODES 4
#else
#define MIN_NODES CONFIG_MIN_NODES
#endif
/**
* @brief create a openssl stack object
*/
OPENSSL_STACK* OPENSSL_sk_new(OPENSSL_sk_compfunc c)
{
OPENSSL_STACK *stack;
char **data;
stack = ssl_mem_zalloc(sizeof(OPENSSL_STACK));
if (!stack) {
SSL_DEBUG(SSL_STACK_ERROR_LEVEL, "no enough memory > (stack)");
goto no_mem1;
}
data = ssl_mem_zalloc(sizeof(*data) * MIN_NODES);
if (!data) {
SSL_DEBUG(SSL_STACK_ERROR_LEVEL, "no enough memory > (data)");
goto no_mem2;
}
stack->data = data;
stack->num_alloc = MIN_NODES;
stack->c = c;
return stack;
no_mem2:
ssl_mem_free(stack);
no_mem1:
return NULL;
}
/**
* @brief create a NULL function openssl stack object
*/
OPENSSL_STACK *OPENSSL_sk_new_null(void)
{
return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
}
/**
* @brief free openssl stack object
*/
void OPENSSL_sk_free(OPENSSL_STACK *stack)
{
SSL_ASSERT3(stack);
ssl_mem_free(stack->data);
ssl_mem_free(stack);
}
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