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	Everytime we report error and log errno, we also capture the actual errno to an internal storage so that user application can retrieve its value.
		
			
				
	
	
		
			82 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			82 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//     http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp_tls.h"
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#include "esp_tls_error_capture_internal.h"
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typedef struct esp_tls_error_storage {
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    struct esp_tls_last_error parent;   /*!< standard esp-tls last error container */
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    int    sock_errno;                  /*!< last socket error captured in esp-tls */
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} esp_tls_error_storage_t;
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void esp_tls_internal_event_tracker_capture(esp_tls_error_handle_t h, uint32_t type, int code)
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{
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    if (h) {
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        esp_tls_error_storage_t * storage = __containerof(h, esp_tls_error_storage_t, parent);
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        if (type == ESP_TLS_ERR_TYPE_ESP) {
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            storage->parent.last_error = code;
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        } else if (type == ESP_TLS_ERR_TYPE_MBEDTLS ||
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                   type == ESP_TLS_ERR_TYPE_WOLFSSL) {
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            storage->parent.esp_tls_error_code = code;
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        } else if (type == ESP_TLS_ERR_TYPE_MBEDTLS_CERT_FLAGS ||
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                   type == ESP_TLS_ERR_TYPE_WOLFSSL_CERT_FLAGS) {
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            storage->parent.esp_tls_flags = code;
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        } else if (type == ESP_TLS_ERR_TYPE_SYSTEM) {
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            storage->sock_errno = code;
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        }
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    }
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}
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esp_tls_error_handle_t esp_tls_internal_event_tracker_create(void)
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{
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    // Allocating internal error storage which extends the parent type
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    // `esp_tls_last_error` defined at interface level
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    struct esp_tls_error_storage* storage =
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            calloc(1, sizeof(struct esp_tls_error_storage));
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    return &storage->parent;
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}
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void esp_tls_internal_event_tracker_destroy(esp_tls_error_handle_t h)
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{
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    esp_tls_error_storage_t * storage = __containerof(h, esp_tls_error_storage_t, parent);
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    free(storage);
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}
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esp_err_t esp_tls_get_and_clear_error_type(esp_tls_error_handle_t h, esp_tls_error_type_t type, int *code)
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{
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    if (h && type < ESP_TLS_ERR_TYPE_MAX && code) {
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        esp_tls_error_storage_t * storage = __containerof(h, esp_tls_error_storage_t, parent);
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        if (type == ESP_TLS_ERR_TYPE_ESP) {
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            *code = storage->parent.last_error;
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            storage->parent.last_error = 0;
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        } else if (type == ESP_TLS_ERR_TYPE_MBEDTLS ||
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                   type == ESP_TLS_ERR_TYPE_WOLFSSL) {
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            *code = storage->parent.esp_tls_error_code;
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            storage->parent.esp_tls_error_code = 0;
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        } else if (type == ESP_TLS_ERR_TYPE_MBEDTLS_CERT_FLAGS ||
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                   type == ESP_TLS_ERR_TYPE_WOLFSSL_CERT_FLAGS) {
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            *code = storage->parent.esp_tls_flags;
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            storage->parent.esp_tls_flags = 0;
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        } else if (type == ESP_TLS_ERR_TYPE_SYSTEM) {
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            *code = storage->sock_errno;
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            storage->sock_errno = 0;
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        } else {
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            return ESP_ERR_INVALID_ARG;
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        }
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        return ESP_OK;
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    }
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    return ESP_ERR_INVALID_ARG;
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}
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