1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "private-lib-core.h" 16 17 #include "ssl_stack.h" 18 #include "ssl_dbg.h" 19 #include "ssl_port.h" 20 21 #ifndef CONFIG_MIN_NODES 22 #define MIN_NODES 4 23 #else 24 #define MIN_NODES CONFIG_MIN_NODES 25 #endif 26 27 /** 28 * @brief create a openssl stack object 29 */ OPENSSL_sk_new(OPENSSL_sk_compfunc c)30OPENSSL_STACK* OPENSSL_sk_new(OPENSSL_sk_compfunc c) 31 { 32 OPENSSL_STACK *stack; 33 char **data; 34 35 stack = ssl_mem_zalloc(sizeof(OPENSSL_STACK)); 36 if (!stack) { 37 SSL_DEBUG(SSL_STACK_ERROR_LEVEL, "no enough memory > (stack)"); 38 goto no_mem1; 39 } 40 41 data = ssl_mem_zalloc(sizeof(*data) * MIN_NODES); 42 if (!data) { 43 SSL_DEBUG(SSL_STACK_ERROR_LEVEL, "no enough memory > (data)"); 44 goto no_mem2; 45 } 46 47 stack->data = data; 48 stack->num_alloc = MIN_NODES; 49 stack->c = c; 50 51 return stack; 52 53 no_mem2: 54 ssl_mem_free(stack); 55 no_mem1: 56 return NULL; 57 } 58 59 /** 60 * @brief create a NULL function openssl stack object 61 */ OPENSSL_sk_new_null(void)62OPENSSL_STACK *OPENSSL_sk_new_null(void) 63 { 64 return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL); 65 } 66 67 /** 68 * @brief free openssl stack object 69 */ OPENSSL_sk_free(OPENSSL_STACK * stack)70void OPENSSL_sk_free(OPENSSL_STACK *stack) 71 { 72 SSL_ASSERT3(stack); 73 74 ssl_mem_free(stack->data); 75 ssl_mem_free(stack); 76 } 77