mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
synced 2025-08-06 15:15:15 +08:00
feat(esp-tls): update esp-tls from esp-idf
Commit ID: 03d07741
This commit is contained in:
Dong Heng
@ -1,4 +1,4 @@
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// Copyright 2017-2018 Espressif Systems (Shanghai) PTE LTD
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// Copyright 2019 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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@ -22,18 +22,14 @@
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#include <http_parser.h>
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#include "esp_tls.h"
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#include "esp_tls_error_capture_internal.h"
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#include <errno.h>
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#if LWIP_IPV6
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#define ESP_TLS_IPV6
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#endif
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static const char *TAG = "esp-tls";
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#if CONFIG_SSL_USING_MBEDTLS
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static mbedtls_x509_crt *global_cacert = NULL;
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#elif CONFIG_SSL_USING_WOLFSSL
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static unsigned char *global_cacert = NULL;
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static unsigned int global_cacert_pem_bytes = 0;
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#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
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#include "esp_tls_mbedtls.h"
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#elif CONFIG_ESP_TLS_USING_WOLFSSL
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#include "esp_tls_wolfssl.h"
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#endif
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#ifdef ESP_PLATFORM
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@ -43,27 +39,43 @@ static unsigned int global_cacert_pem_bytes = 0;
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#define ESP_LOGE(TAG, ...) printf(__VA_ARGS__);
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#endif
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static struct addrinfo *resolve_host_name(const char *host, size_t hostlen)
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#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
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#define _esp_create_ssl_handle esp_create_mbedtls_handle
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#define _esp_tls_handshake esp_mbedtls_handshake
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#define _esp_tls_read esp_mbedtls_read
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#define _esp_tls_write esp_mbedtls_write
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#define _esp_tls_conn_delete esp_mbedtls_conn_delete
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#ifdef CONFIG_ESP_TLS_SERVER
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#define _esp_tls_server_session_create esp_mbedtls_server_session_create
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#define _esp_tls_server_session_delete esp_mbedtls_server_session_delete
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#endif /* CONFIG_ESP_TLS_SERVER */
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#define _esp_tls_get_bytes_avail esp_mbedtls_get_bytes_avail
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#define _esp_tls_init_global_ca_store esp_mbedtls_init_global_ca_store
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#define _esp_tls_set_global_ca_store esp_mbedtls_set_global_ca_store /*!< Callback function for setting global CA store data for TLS/SSL */
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#define _esp_tls_get_global_ca_store esp_mbedtls_get_global_ca_store
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#define _esp_tls_free_global_ca_store esp_mbedtls_free_global_ca_store /*!< Callback function for freeing global ca store for TLS/SSL */
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#elif CONFIG_ESP_TLS_USING_WOLFSSL /* CONFIG_ESP_TLS_USING_MBEDTLS */
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#define _esp_create_ssl_handle esp_create_wolfssl_handle
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#define _esp_tls_handshake esp_wolfssl_handshake
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#define _esp_tls_read esp_wolfssl_read
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#define _esp_tls_write esp_wolfssl_write
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#define _esp_tls_conn_delete esp_wolfssl_conn_delete
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#define _esp_tls_get_bytes_avail esp_wolfssl_get_bytes_avail
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#define _esp_tls_init_global_ca_store esp_wolfssl_init_global_ca_store
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#define _esp_tls_set_global_ca_store esp_wolfssl_set_global_ca_store /*!< Callback function for setting global CA store data for TLS/SSL */
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#define _esp_tls_free_global_ca_store esp_wolfssl_free_global_ca_store /*!< Callback function for freeing global ca store for TLS/SSL */
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#else /* ESP_TLS_USING_WOLFSSL */
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#error "No TLS stack configured"
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#endif
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static esp_err_t create_ssl_handle(const char *hostname, size_t hostlen, const void *cfg, esp_tls_t *tls)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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return _esp_create_ssl_handle(hostname, hostlen, cfg, tls);
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}
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char *use_host = strndup(host, hostlen);
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if (!use_host) {
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return NULL;
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}
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ESP_LOGD(TAG, "host:%s: strlen %lu", use_host, (unsigned long)hostlen);
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struct addrinfo *res;
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if (getaddrinfo(use_host, NULL, &hints, &res)) {
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ESP_LOGE(TAG, "couldn't get hostname for :%s:", use_host);
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free(use_host);
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return NULL;
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}
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free(use_host);
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return res;
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static esp_err_t esp_tls_handshake(esp_tls_t *tls, const esp_tls_cfg_t *cfg)
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{
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return _esp_tls_handshake(tls, cfg);
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}
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static ssize_t tcp_read(esp_tls_t *tls, char *data, size_t datalen)
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@ -71,413 +83,9 @@ static ssize_t tcp_read(esp_tls_t *tls, char *data, size_t datalen)
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return recv(tls->sockfd, data, datalen, 0);
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}
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static ssize_t tls_read(esp_tls_t *tls, char *data, size_t datalen)
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static ssize_t tcp_write(esp_tls_t *tls, const char *data, size_t datalen)
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{
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#if CONFIG_SSL_USING_MBEDTLS
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ssize_t ret = mbedtls_ssl_read(&tls->ssl, (unsigned char *)data, datalen);
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if (ret < 0) {
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if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
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return 0;
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}
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if (ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
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ESP_LOGE(TAG, "read error :%d:", ret);
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} else {
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ret = (ret == MBEDTLS_ERR_SSL_WANT_READ) ? ESP_TLS_ERROR_WANT_READ : ESP_TLS_ERROR_WANT_WRITE;
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}
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}
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#elif CONFIG_SSL_USING_WOLFSSL
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ssize_t ret = wolfSSL_read(tls->ssl, (unsigned char *)data, datalen);
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if (ret < 0) {
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ret = wolfSSL_get_error(tls->ssl, ret);
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/* peer sent close notify */
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if (ret == WOLFSSL_ERROR_ZERO_RETURN) {
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return 0;
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}
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if (ret != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
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ESP_LOGE(TAG, "read error :%d:", ret);
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} else {
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ret = (ret == WOLFSSL_ERROR_WANT_READ) ? ESP_TLS_ERROR_WANT_READ : ESP_TLS_ERROR_WANT_WRITE;
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}
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}
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#endif
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return ret;
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}
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static void ms_to_timeval(int timeout_ms, struct timeval *tv)
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{
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tv->tv_sec = timeout_ms / 1000;
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tv->tv_usec = (timeout_ms % 1000) * 1000;
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}
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static int esp_tcp_connect(const char *host, int hostlen, int port, int *sockfd, const esp_tls_cfg_t *cfg)
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{
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int ret = -1;
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struct addrinfo *res = resolve_host_name(host, hostlen);
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if (!res) {
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return ret;
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}
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int fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
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if (fd < 0) {
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ESP_LOGE(TAG, "Failed to create socket (family %d socktype %d protocol %d)", res->ai_family, res->ai_socktype, res->ai_protocol);
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goto err_freeaddr;
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}
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void *addr_ptr;
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if (res->ai_family == AF_INET) {
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struct sockaddr_in *p = (struct sockaddr_in *)res->ai_addr;
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p->sin_port = htons(port);
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addr_ptr = p;
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#ifdef ESP_TLS_IPV6
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} else if (res->ai_family == AF_INET6) {
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struct sockaddr_in6 *p = (struct sockaddr_in6 *)res->ai_addr;
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p->sin6_port = htons(port);
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p->sin6_family = AF_INET6;
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addr_ptr = p;
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#endif
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} else {
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ESP_LOGE(TAG, "Unsupported protocol family %d", res->ai_family);
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goto err_freesocket;
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}
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if (cfg) {
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if (cfg->timeout_ms >= 0) {
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struct timeval tv;
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ms_to_timeval(cfg->timeout_ms, &tv);
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setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
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}
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if (cfg->non_block) {
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int flags = fcntl(fd, F_GETFL, 0);
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fcntl(fd, F_SETFL, flags | O_NONBLOCK);
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}
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}
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ret = connect(fd, addr_ptr, res->ai_addrlen);
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if (ret < 0 && !(errno == EINPROGRESS && cfg && cfg->non_block)) {
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ESP_LOGE(TAG, "Failed to connect to host (errno %d)", errno);
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goto err_freesocket;
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}
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*sockfd = fd;
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freeaddrinfo(res);
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return 0;
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err_freesocket:
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close(fd);
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err_freeaddr:
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freeaddrinfo(res);
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return ret;
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}
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#if CONFIG_SSL_USING_MBEDTLS
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esp_err_t esp_tls_init_global_ca_store()
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{
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if (global_cacert == NULL) {
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global_cacert = (mbedtls_x509_crt *)calloc(1, sizeof(mbedtls_x509_crt));
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if (global_cacert == NULL) {
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ESP_LOGE(TAG, "global_cacert not allocated");
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return ESP_ERR_NO_MEM;
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}
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mbedtls_x509_crt_init(global_cacert);
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}
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return ESP_OK;
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}
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#endif
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esp_err_t esp_tls_set_global_ca_store(const unsigned char *cacert_pem_buf, const unsigned int cacert_pem_bytes)
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{
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if (cacert_pem_buf == NULL) {
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ESP_LOGE(TAG, "cacert_pem_buf is null");
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return ESP_ERR_INVALID_ARG;
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}
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#if CONFIG_SSL_USING_MBEDTLS
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int ret;
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if (global_cacert == NULL) {
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ret = esp_tls_init_global_ca_store();
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if (ret != ESP_OK) {
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return ret;
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}
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}
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ret = mbedtls_x509_crt_parse(global_cacert, cacert_pem_buf, cacert_pem_bytes);
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if (ret < 0) {
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ESP_LOGE(TAG, "mbedtls_x509_crt_parse returned -0x%x\n\n", -ret);
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mbedtls_x509_crt_free(global_cacert);
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global_cacert = NULL;
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return ESP_FAIL;
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} else if (ret > 0) {
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ESP_LOGE(TAG, "mbedtls_x509_crt_parse was partly successful. No. of failed certificates: %d", ret);
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}
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return ESP_OK;
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#elif CONFIG_SSL_USING_WOLFSSL
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if (global_cacert != NULL) {
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esp_tls_free_global_ca_store(global_cacert);
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}
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global_cacert = (unsigned char *)strndup((const char *)cacert_pem_buf, cacert_pem_bytes);
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if (!global_cacert)
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return ESP_FAIL;
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global_cacert_pem_bytes = cacert_pem_bytes;
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return ESP_OK;
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#endif
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}
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void *esp_tls_get_global_ca_store()
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{
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return (void*)global_cacert;
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}
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void esp_tls_free_global_ca_store()
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{
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if (global_cacert) {
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#if CONFIG_SSL_USING_MBEDTLS
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mbedtls_x509_crt_free(global_cacert);
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global_cacert = NULL;
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#elif CONFIG_SSL_USING_WOLFSSL
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free(global_cacert);
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global_cacert = NULL;
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global_cacert_pem_bytes = 0;
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#endif
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}
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}
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static void verify_certificate(esp_tls_t *tls)
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{
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#if CONFIG_SSL_USING_MBEDTLS
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int flags;
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char buf[100];
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if ((flags = mbedtls_ssl_get_verify_result(&tls->ssl)) != 0) {
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ESP_LOGI(TAG, "Failed to verify peer certificate!");
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bzero(buf, sizeof(buf));
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mbedtls_x509_crt_verify_info(buf, sizeof(buf), " ! ", flags);
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ESP_LOGI(TAG, "verification info: %s", buf);
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} else {
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ESP_LOGI(TAG, "Certificate verified.");
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}
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#elif CONFIG_SSL_USING_WOLFSSL
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int flags;
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if ((flags = wolfSSL_get_verify_result(tls->ssl)) != WOLFSSL_SUCCESS) {
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ESP_LOGE(TAG, "Failed to verify peer certificate %d!", flags);
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} else {
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ESP_LOGI(TAG, "Certificate verified.");
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}
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#endif
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}
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static void esp_tls_cleanup(esp_tls_t *tls)
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{
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if (!tls) {
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return;
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}
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#if CONFIG_SSL_USING_MBEDTLS
|
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if (tls->cacert_ptr != global_cacert) {
|
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mbedtls_x509_crt_free(tls->cacert_ptr);
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}
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tls->cacert_ptr = NULL;
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mbedtls_x509_crt_free(&tls->cacert);
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mbedtls_x509_crt_free(&tls->clientcert);
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mbedtls_pk_free(&tls->clientkey);
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mbedtls_entropy_free(&tls->entropy);
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mbedtls_ssl_config_free(&tls->conf);
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mbedtls_ctr_drbg_free(&tls->ctr_drbg);
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mbedtls_ssl_free(&tls->ssl);
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#elif CONFIG_SSL_USING_WOLFSSL
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wolfSSL_shutdown(tls->ssl);
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wolfSSL_free(tls->ssl);
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wolfSSL_CTX_free(tls->ctx);
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wolfSSL_Cleanup();
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#endif
|
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}
|
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|
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static int create_ssl_handle(esp_tls_t *tls, const char *hostname, size_t hostlen, const esp_tls_cfg_t *cfg)
|
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{
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int ret;
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|
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#if CONFIG_SSL_USING_MBEDTLS
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tls->server_fd.fd = tls->sockfd;
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mbedtls_ssl_init(&tls->ssl);
|
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mbedtls_ctr_drbg_init(&tls->ctr_drbg);
|
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mbedtls_ssl_config_init(&tls->conf);
|
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mbedtls_entropy_init(&tls->entropy);
|
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|
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if ((ret = mbedtls_ctr_drbg_seed(&tls->ctr_drbg,
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mbedtls_entropy_func, &tls->entropy, NULL, 0)) != 0) {
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ESP_LOGE(TAG, "mbedtls_ctr_drbg_seed returned %d", ret);
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goto exit;
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}
|
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|
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if (!cfg->skip_common_name) {
|
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char *use_host = NULL;
|
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if (cfg->common_name != NULL) {
|
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use_host = strndup(cfg->common_name, strlen(cfg->common_name));
|
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} else {
|
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use_host = strndup(hostname, hostlen);
|
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}
|
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|
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if (use_host == NULL) {
|
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goto exit;
|
||||
}
|
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|
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/* Hostname set here should match CN in server certificate */
|
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if ((ret = mbedtls_ssl_set_hostname(&tls->ssl, use_host)) != 0) {
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ESP_LOGE(TAG, "mbedtls_ssl_set_hostname returned -0x%x", -ret);
|
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free(use_host);
|
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goto exit;
|
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}
|
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free(use_host);
|
||||
}
|
||||
|
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if ((ret = mbedtls_ssl_config_defaults(&tls->conf,
|
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MBEDTLS_SSL_IS_CLIENT,
|
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MBEDTLS_SSL_TRANSPORT_STREAM,
|
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MBEDTLS_SSL_PRESET_DEFAULT)) != 0) {
|
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ESP_LOGE(TAG, "mbedtls_ssl_config_defaults returned %d", ret);
|
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goto exit;
|
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}
|
||||
|
||||
#ifdef CONFIG_MBEDTLS_SSL_ALPN
|
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if (cfg->alpn_protos) {
|
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mbedtls_ssl_conf_alpn_protocols(&tls->conf, cfg->alpn_protos);
|
||||
}
|
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#endif
|
||||
|
||||
if (cfg->use_global_ca_store == true) {
|
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if (global_cacert == NULL) {
|
||||
ESP_LOGE(TAG, "global_cacert is NULL");
|
||||
goto exit;
|
||||
}
|
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tls->cacert_ptr = global_cacert;
|
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mbedtls_ssl_conf_authmode(&tls->conf, MBEDTLS_SSL_VERIFY_REQUIRED);
|
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mbedtls_ssl_conf_ca_chain(&tls->conf, tls->cacert_ptr, NULL);
|
||||
} else if (cfg->cacert_pem_buf != NULL) {
|
||||
tls->cacert_ptr = &tls->cacert;
|
||||
mbedtls_x509_crt_init(tls->cacert_ptr);
|
||||
ret = mbedtls_x509_crt_parse(tls->cacert_ptr, cfg->cacert_pem_buf, cfg->cacert_pem_bytes);
|
||||
if (ret < 0) {
|
||||
ESP_LOGE(TAG, "mbedtls_x509_crt_parse returned -0x%x\n\n", -ret);
|
||||
goto exit;
|
||||
}
|
||||
mbedtls_ssl_conf_authmode(&tls->conf, MBEDTLS_SSL_VERIFY_REQUIRED);
|
||||
mbedtls_ssl_conf_ca_chain(&tls->conf, tls->cacert_ptr, NULL);
|
||||
} else {
|
||||
mbedtls_ssl_conf_authmode(&tls->conf, MBEDTLS_SSL_VERIFY_NONE);
|
||||
}
|
||||
|
||||
if (cfg->clientcert_pem_buf != NULL && cfg->clientkey_pem_buf != NULL) {
|
||||
mbedtls_x509_crt_init(&tls->clientcert);
|
||||
mbedtls_pk_init(&tls->clientkey);
|
||||
|
||||
ret = mbedtls_x509_crt_parse(&tls->clientcert, cfg->clientcert_pem_buf, cfg->clientcert_pem_bytes);
|
||||
if (ret < 0) {
|
||||
ESP_LOGE(TAG, "mbedtls_x509_crt_parse returned -0x%x\n\n", -ret);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
ret = mbedtls_pk_parse_key(&tls->clientkey, cfg->clientkey_pem_buf, cfg->clientkey_pem_bytes,
|
||||
cfg->clientkey_password, cfg->clientkey_password_len);
|
||||
if (ret < 0) {
|
||||
ESP_LOGE(TAG, "mbedtls_pk_parse_keyfile returned -0x%x\n\n", -ret);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
ret = mbedtls_ssl_conf_own_cert(&tls->conf, &tls->clientcert, &tls->clientkey);
|
||||
if (ret < 0) {
|
||||
ESP_LOGE(TAG, "mbedtls_ssl_conf_own_cert returned -0x%x\n\n", -ret);
|
||||
goto exit;
|
||||
}
|
||||
} else if (cfg->clientcert_pem_buf != NULL || cfg->clientkey_pem_buf != NULL) {
|
||||
ESP_LOGE(TAG, "You have to provide both clientcert_pem_buf and clientkey_pem_buf for mutual authentication\n\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
mbedtls_ssl_conf_rng(&tls->conf, mbedtls_ctr_drbg_random, &tls->ctr_drbg);
|
||||
|
||||
#ifdef CONFIG_MBEDTLS_DEBUG
|
||||
mbedtls_esp_enable_debug_log(&tls->conf, 4);
|
||||
#endif
|
||||
|
||||
if ((ret = mbedtls_ssl_setup(&tls->ssl, &tls->conf)) != 0) {
|
||||
ESP_LOGE(TAG, "mbedtls_ssl_setup returned -0x%x\n\n", -ret);
|
||||
goto exit;
|
||||
}
|
||||
mbedtls_ssl_set_bio(&tls->ssl, &tls->server_fd, mbedtls_net_send, mbedtls_net_recv, NULL);
|
||||
|
||||
return 0;
|
||||
exit:
|
||||
esp_tls_cleanup(tls);
|
||||
return -1;
|
||||
#elif CONFIG_SSL_USING_WOLFSSL
|
||||
ret = wolfSSL_Init();
|
||||
if (ret != WOLFSSL_SUCCESS) {
|
||||
ESP_LOGE(TAG, "Init wolfSSL failed: %d", ret);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
tls->ctx = wolfSSL_CTX_new(wolfSSLv23_client_method());
|
||||
if (!tls->ctx) {
|
||||
ESP_LOGE(TAG, "Set wolfSSL ctx failed");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
#ifdef HAVE_ALPN
|
||||
if (cfg->alpn_protos) {
|
||||
char **alpn_list = (char **)cfg->alpn_protos;
|
||||
for (; *alpn_list != NULL; alpn_list ++) {
|
||||
if (wolfSSL_UseALPN(tls->ssl, *alpn_list, strlen(*alpn_list), WOLFSSL_ALPN_FAILED_ON_MISMATCH) != WOLFSSL_SUCCESS) {
|
||||
ESP_LOGE(TAG, "Use wolfSSL ALPN failed");
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
if (cfg->use_global_ca_store == true) {
|
||||
wolfSSL_CTX_load_verify_buffer(tls->ctx, global_cacert, global_cacert_pem_bytes, WOLFSSL_FILETYPE_PEM);
|
||||
wolfSSL_CTX_set_verify(tls->ctx, SSL_VERIFY_PEER, NULL);
|
||||
} else if (cfg->cacert_pem_buf != NULL) {
|
||||
wolfSSL_CTX_load_verify_buffer(tls->ctx, cfg->cacert_pem_buf, cfg->cacert_pem_bytes, WOLFSSL_FILETYPE_PEM);
|
||||
wolfSSL_CTX_set_verify(tls->ctx, SSL_VERIFY_PEER, NULL);
|
||||
} else {
|
||||
wolfSSL_CTX_set_verify(tls->ctx, SSL_VERIFY_NONE, NULL);
|
||||
}
|
||||
|
||||
if (cfg->clientcert_pem_buf != NULL && cfg->clientkey_pem_buf != NULL) {
|
||||
wolfSSL_CTX_use_certificate_buffer(tls->ctx, cfg->clientcert_pem_buf, cfg->clientcert_pem_bytes, WOLFSSL_FILETYPE_PEM);
|
||||
wolfSSL_CTX_use_PrivateKey_buffer(tls->ctx, cfg->clientkey_pem_buf, cfg->clientkey_pem_bytes, WOLFSSL_FILETYPE_PEM);
|
||||
} else if (cfg->clientcert_pem_buf != NULL || cfg->clientkey_pem_buf != NULL) {
|
||||
ESP_LOGE(TAG, "You have to provide both clientcert_pem_buf and clientkey_pem_buf for mutual authentication\n\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
tls->ssl = wolfSSL_new(tls->ctx);
|
||||
if (!tls->ssl) {
|
||||
ESP_LOGE(TAG, "Create wolfSSL failed");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
#ifdef HAVE_SNI
|
||||
/* Hostname set here should match CN in server certificate */
|
||||
char *use_host = strndup(hostname, hostlen);
|
||||
if (!use_host) {
|
||||
goto exit;
|
||||
}
|
||||
wolfSSL_set_tlsext_host_name(tls->ssl, use_host);
|
||||
free(use_host);
|
||||
#endif
|
||||
|
||||
wolfSSL_set_fd(tls->ssl, tls->sockfd);
|
||||
|
||||
return 0;
|
||||
exit:
|
||||
esp_tls_cleanup(tls);
|
||||
return -1;
|
||||
#endif
|
||||
return send(tls->sockfd, data, datalen, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -486,48 +94,123 @@ exit:
|
||||
void esp_tls_conn_delete(esp_tls_t *tls)
|
||||
{
|
||||
if (tls != NULL) {
|
||||
esp_tls_cleanup(tls);
|
||||
#if CONFIG_SSL_USING_MBEDTLS
|
||||
if (tls->is_tls) {
|
||||
mbedtls_net_free(&tls->server_fd);
|
||||
} else
|
||||
#endif
|
||||
_esp_tls_conn_delete(tls);
|
||||
if (tls->sockfd >= 0) {
|
||||
close(tls->sockfd);
|
||||
}
|
||||
free(tls);
|
||||
free(tls->error_handle);
|
||||
free(tls);
|
||||
}
|
||||
};
|
||||
|
||||
static ssize_t tcp_write(esp_tls_t *tls, const char *data, size_t datalen)
|
||||
{
|
||||
return send(tls->sockfd, data, datalen, 0);
|
||||
}
|
||||
|
||||
static ssize_t tls_write(esp_tls_t *tls, const char *data, size_t datalen)
|
||||
esp_tls_t *esp_tls_init(void)
|
||||
{
|
||||
#if CONFIG_SSL_USING_MBEDTLS
|
||||
ssize_t ret = mbedtls_ssl_write(&tls->ssl, (unsigned char*) data, datalen);
|
||||
if (ret < 0) {
|
||||
if (ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
ESP_LOGE(TAG, "write error :%d:", ret);
|
||||
} else {
|
||||
ret = (ret == MBEDTLS_ERR_SSL_WANT_READ) ? ESP_TLS_ERROR_WANT_READ : ESP_TLS_ERROR_WANT_WRITE;
|
||||
}
|
||||
esp_tls_t *tls = (esp_tls_t *)calloc(1, sizeof(esp_tls_t));
|
||||
if (!tls) {
|
||||
return NULL;
|
||||
}
|
||||
return ret;
|
||||
#elif CONFIG_SSL_USING_WOLFSSL
|
||||
ssize_t ret = wolfSSL_write(tls->ssl, (unsigned char*) data, datalen);
|
||||
if (ret < 0) {
|
||||
ret = wolfSSL_get_error(tls->ssl, ret);
|
||||
if (ret != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
|
||||
ESP_LOGE(TAG, "write error :%d:", ret);
|
||||
} else {
|
||||
ret = (ret == WOLFSSL_ERROR_WANT_READ) ? ESP_TLS_ERROR_WANT_READ : ESP_TLS_ERROR_WANT_WRITE;
|
||||
}
|
||||
tls->error_handle = calloc(1, sizeof(esp_tls_last_error_t));
|
||||
if (!tls->error_handle) {
|
||||
free(tls);
|
||||
return NULL;
|
||||
}
|
||||
return ret;
|
||||
#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
|
||||
tls->server_fd.fd = tls->sockfd = -1;
|
||||
#endif
|
||||
return tls;
|
||||
}
|
||||
|
||||
static esp_err_t resolve_host_name(const char *host, size_t hostlen, struct addrinfo **address_info)
|
||||
{
|
||||
struct addrinfo hints;
|
||||
memset(&hints, 0, sizeof(hints));
|
||||
hints.ai_family = AF_UNSPEC;
|
||||
hints.ai_socktype = SOCK_STREAM;
|
||||
|
||||
char *use_host = strndup(host, hostlen);
|
||||
if (!use_host) {
|
||||
return ESP_ERR_NO_MEM;
|
||||
}
|
||||
|
||||
ESP_LOGD(TAG, "host:%s: strlen %lu", use_host, (unsigned long)hostlen);
|
||||
if (getaddrinfo(use_host, NULL, &hints, address_info)) {
|
||||
ESP_LOGE(TAG, "couldn't get hostname for :%s:", use_host);
|
||||
free(use_host);
|
||||
return ESP_ERR_ESP_TLS_CANNOT_RESOLVE_HOSTNAME;
|
||||
}
|
||||
free(use_host);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static void ms_to_timeval(int timeout_ms, struct timeval *tv)
|
||||
{
|
||||
tv->tv_sec = timeout_ms / 1000;
|
||||
tv->tv_usec = (timeout_ms % 1000) * 1000;
|
||||
}
|
||||
|
||||
static esp_err_t esp_tcp_connect(const char *host, int hostlen, int port, int *sockfd, const esp_tls_t *tls, const esp_tls_cfg_t *cfg)
|
||||
{
|
||||
esp_err_t ret;
|
||||
struct addrinfo *addrinfo;
|
||||
if ((ret = resolve_host_name(host, hostlen, &addrinfo)) != ESP_OK) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
int fd = socket(addrinfo->ai_family, addrinfo->ai_socktype, addrinfo->ai_protocol);
|
||||
if (fd < 0) {
|
||||
ESP_LOGE(TAG, "Failed to create socket (family %d socktype %d protocol %d)", addrinfo->ai_family, addrinfo->ai_socktype, addrinfo->ai_protocol);
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_SYSTEM, errno);
|
||||
ret = ESP_ERR_ESP_TLS_CANNOT_CREATE_SOCKET;
|
||||
goto err_freeaddr;
|
||||
}
|
||||
|
||||
void *addr_ptr;
|
||||
if (addrinfo->ai_family == AF_INET) {
|
||||
struct sockaddr_in *p = (struct sockaddr_in *)addrinfo->ai_addr;
|
||||
p->sin_port = htons(port);
|
||||
addr_ptr = p;
|
||||
} else if (addrinfo->ai_family == AF_INET6) {
|
||||
struct sockaddr_in6 *p = (struct sockaddr_in6 *)addrinfo->ai_addr;
|
||||
p->sin6_port = htons(port);
|
||||
p->sin6_family = AF_INET6;
|
||||
addr_ptr = p;
|
||||
} else {
|
||||
ESP_LOGE(TAG, "Unsupported protocol family %d", addrinfo->ai_family);
|
||||
ret = ESP_ERR_ESP_TLS_UNSUPPORTED_PROTOCOL_FAMILY;
|
||||
goto err_freesocket;
|
||||
}
|
||||
|
||||
if (cfg) {
|
||||
if (cfg->timeout_ms >= 0) {
|
||||
struct timeval tv;
|
||||
ms_to_timeval(cfg->timeout_ms, &tv);
|
||||
setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
|
||||
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
|
||||
}
|
||||
if (cfg->non_block) {
|
||||
int flags = fcntl(fd, F_GETFL, 0);
|
||||
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
|
||||
}
|
||||
}
|
||||
|
||||
ret = connect(fd, addr_ptr, addrinfo->ai_addrlen);
|
||||
if (ret < 0 && !(errno == EINPROGRESS && cfg && cfg->non_block)) {
|
||||
|
||||
ESP_LOGE(TAG, "Failed to connnect to host (errno %d)", errno);
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_SYSTEM, errno);
|
||||
ret = ESP_ERR_ESP_TLS_FAILED_CONNECT_TO_HOST;
|
||||
goto err_freesocket;
|
||||
}
|
||||
|
||||
*sockfd = fd;
|
||||
freeaddrinfo(addrinfo);
|
||||
return ESP_OK;
|
||||
|
||||
err_freesocket:
|
||||
close(fd);
|
||||
err_freeaddr:
|
||||
freeaddrinfo(addrinfo);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int esp_tls_low_level_conn(const char *hostname, int hostlen, int port, const esp_tls_cfg_t *cfg, esp_tls_t *tls)
|
||||
@ -536,118 +219,83 @@ static int esp_tls_low_level_conn(const char *hostname, int hostlen, int port, c
|
||||
ESP_LOGE(TAG, "empty esp_tls parameter");
|
||||
return -1;
|
||||
}
|
||||
esp_err_t esp_ret;
|
||||
/* These states are used to keep a tab on connection progress in case of non-blocking connect,
|
||||
and in case of blocking connect these cases will get executed one after the other */
|
||||
switch (tls->conn_state) {
|
||||
case ESP_TLS_INIT:
|
||||
tls->sockfd = -1;
|
||||
if (cfg != NULL) {
|
||||
#if CONFIG_SSL_USING_MBEDTLS
|
||||
mbedtls_net_init(&tls->server_fd);
|
||||
case ESP_TLS_INIT:
|
||||
tls->sockfd = -1;
|
||||
if (cfg != NULL) {
|
||||
#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
|
||||
mbedtls_net_init(&tls->server_fd);
|
||||
#endif
|
||||
tls->is_tls = true;
|
||||
}
|
||||
int ret = esp_tcp_connect(hostname, hostlen, port, &tls->sockfd, cfg);
|
||||
if (ret < 0) {
|
||||
return -1;
|
||||
}
|
||||
if (!cfg) {
|
||||
tls->_read = tcp_read;
|
||||
tls->_write = tcp_write;
|
||||
ESP_LOGD(TAG, "non-tls connection established");
|
||||
return 1;
|
||||
}
|
||||
if (cfg->non_block) {
|
||||
FD_ZERO(&tls->rset);
|
||||
FD_SET(tls->sockfd, &tls->rset);
|
||||
tls->wset = tls->rset;
|
||||
}
|
||||
tls->conn_state = ESP_TLS_CONNECTING;
|
||||
/* falls through */
|
||||
case ESP_TLS_CONNECTING:
|
||||
if (cfg->non_block) {
|
||||
ESP_LOGD(TAG, "connecting...");
|
||||
struct timeval tv;
|
||||
ms_to_timeval(cfg->timeout_ms, &tv);
|
||||
tls->is_tls = true;
|
||||
}
|
||||
if ((esp_ret = esp_tcp_connect(hostname, hostlen, port, &tls->sockfd, tls, cfg)) != ESP_OK) {
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_ESP, esp_ret);
|
||||
return -1;
|
||||
}
|
||||
if (!cfg) {
|
||||
tls->read = tcp_read;
|
||||
tls->write = tcp_write;
|
||||
ESP_LOGD(TAG, "non-tls connection established");
|
||||
return 1;
|
||||
}
|
||||
if (cfg->non_block) {
|
||||
FD_ZERO(&tls->rset);
|
||||
FD_SET(tls->sockfd, &tls->rset);
|
||||
tls->wset = tls->rset;
|
||||
}
|
||||
tls->conn_state = ESP_TLS_CONNECTING;
|
||||
/* falls through */
|
||||
case ESP_TLS_CONNECTING:
|
||||
if (cfg->non_block) {
|
||||
ESP_LOGD(TAG, "connecting...");
|
||||
struct timeval tv;
|
||||
ms_to_timeval(cfg->timeout_ms, &tv);
|
||||
|
||||
/* In case of non-blocking I/O, we use the select() API to check whether
|
||||
connection has been estbalished or not*/
|
||||
if (select(tls->sockfd + 1, &tls->rset, &tls->wset, NULL,
|
||||
cfg->timeout_ms ? &tv : NULL) == 0) {
|
||||
ESP_LOGD(TAG, "select() timed out");
|
||||
return 0;
|
||||
}
|
||||
if (FD_ISSET(tls->sockfd, &tls->rset) || FD_ISSET(tls->sockfd, &tls->wset)) {
|
||||
int error;
|
||||
unsigned int len = sizeof(error);
|
||||
/* pending error check */
|
||||
if (getsockopt(tls->sockfd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
|
||||
ESP_LOGD(TAG, "Non blocking connect failed");
|
||||
tls->conn_state = ESP_TLS_FAIL;
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
/* In case of non-blocking I/O, we use the select() API to check whether
|
||||
connection has been estbalished or not*/
|
||||
if (select(tls->sockfd + 1, &tls->rset, &tls->wset, NULL,
|
||||
cfg->timeout_ms ? &tv : NULL) == 0) {
|
||||
ESP_LOGD(TAG, "select() timed out");
|
||||
return 0;
|
||||
}
|
||||
/* By now, the connection has been established */
|
||||
ret = create_ssl_handle(tls, hostname, hostlen, cfg);
|
||||
if (ret != 0) {
|
||||
ESP_LOGD(TAG, "create_ssl_handshake failed");
|
||||
tls->conn_state = ESP_TLS_FAIL;
|
||||
return -1;
|
||||
}
|
||||
tls->_read = tls_read;
|
||||
tls->_write = tls_write;
|
||||
tls->conn_state = ESP_TLS_HANDSHAKE;
|
||||
/* falls through */
|
||||
case ESP_TLS_HANDSHAKE:
|
||||
ESP_LOGD(TAG, "handshake in progress...");
|
||||
#if CONFIG_SSL_USING_MBEDTLS
|
||||
ret = mbedtls_ssl_handshake(&tls->ssl);
|
||||
if (ret == 0) {
|
||||
tls->conn_state = ESP_TLS_DONE;
|
||||
return 1;
|
||||
} else {
|
||||
if (ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
ESP_LOGE(TAG, "mbedtls_ssl_handshake returned -0x%x", -ret);
|
||||
if (cfg->cacert_pem_buf != NULL || cfg->use_global_ca_store == true) {
|
||||
/* This is to check whether handshake failed due to invalid certificate*/
|
||||
verify_certificate(tls);
|
||||
}
|
||||
if (FD_ISSET(tls->sockfd, &tls->rset) || FD_ISSET(tls->sockfd, &tls->wset)) {
|
||||
int error;
|
||||
unsigned int len = sizeof(error);
|
||||
/* pending error check */
|
||||
if (getsockopt(tls->sockfd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
|
||||
ESP_LOGD(TAG, "Non blocking connect failed");
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_SYSTEM, errno);
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_ESP, ESP_ERR_ESP_TLS_SOCKET_SETOPT_FAILED);
|
||||
tls->conn_state = ESP_TLS_FAIL;
|
||||
return -1;
|
||||
}
|
||||
/* Irrespective of blocking or non-blocking I/O, we return on getting MBEDTLS_ERR_SSL_WANT_READ
|
||||
or MBEDTLS_ERR_SSL_WANT_WRITE during handshake */
|
||||
return 0;
|
||||
}
|
||||
#elif CONFIG_SSL_USING_WOLFSSL
|
||||
ret = wolfSSL_connect(tls->ssl);
|
||||
if (ret == WOLFSSL_SUCCESS) {
|
||||
tls->conn_state = ESP_TLS_DONE;
|
||||
return 1;
|
||||
} else {
|
||||
int err = wolfSSL_get_error(tls->ssl, ret);
|
||||
if (err != WOLFSSL_ERROR_WANT_READ && err != WOLFSSL_ERROR_WANT_WRITE) {
|
||||
ESP_LOGE(TAG, "wolfSSL_connect returned -0x%x", -ret);
|
||||
if (cfg->cacert_pem_buf != NULL || cfg->use_global_ca_store == true) {
|
||||
/* This is to check whether handshake failed due to invalid certificate*/
|
||||
verify_certificate(tls);
|
||||
}
|
||||
tls->conn_state = ESP_TLS_FAIL;
|
||||
return -1;
|
||||
}
|
||||
/* Irrespective of blocking or non-blocking I/O, we return on getting wolfSSL_want_read
|
||||
or wolfSSL_want_write during handshake */
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
break;
|
||||
case ESP_TLS_FAIL:
|
||||
ESP_LOGE(TAG, "failed to open a new connection");;
|
||||
break;
|
||||
default:
|
||||
ESP_LOGE(TAG, "invalid esp-tls state");
|
||||
break;
|
||||
}
|
||||
/* By now, the connection has been established */
|
||||
esp_ret = create_ssl_handle(hostname, hostlen, cfg, tls);
|
||||
if (esp_ret != ESP_OK) {
|
||||
ESP_LOGE(TAG, "create_ssl_handle failed");
|
||||
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ERR_TYPE_ESP, esp_ret);
|
||||
tls->conn_state = ESP_TLS_FAIL;
|
||||
return -1;
|
||||
}
|
||||
tls->read = _esp_tls_read;
|
||||
tls->write = _esp_tls_write;
|
||||
tls->conn_state = ESP_TLS_HANDSHAKE;
|
||||
/* falls through */
|
||||
case ESP_TLS_HANDSHAKE:
|
||||
ESP_LOGD(TAG, "handshake in progress...");
|
||||
return esp_tls_handshake(tls, cfg);
|
||||
break;
|
||||
case ESP_TLS_FAIL:
|
||||
ESP_LOGE(TAG, "failed to open a new connection");;
|
||||
break;
|
||||
default:
|
||||
ESP_LOGE(TAG, "invalid esp-tls state");
|
||||
break;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
@ -676,10 +324,26 @@ esp_tls_t *esp_tls_conn_new(const char *hostname, int hostlen, int port, const e
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int esp_tls_conn_new_sync(const char *hostname, int hostlen, int port, const esp_tls_cfg_t *cfg, esp_tls_t *tls)
|
||||
{
|
||||
/* esp_tls_conn_new_sync() is a sync alternative to esp_tls_conn_new_async() with symetric function prototype
|
||||
it is an alternative to esp_tls_conn_new() which is left for compatibility reasons */
|
||||
while (1) {
|
||||
int ret = esp_tls_low_level_conn(hostname, hostlen, port, cfg, tls);
|
||||
if (ret == 1) {
|
||||
return ret;
|
||||
} else if (ret == -1) {
|
||||
ESP_LOGE(TAG, "Failed to open new connection");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* @brief Create a new TLS/SSL non-blocking connection
|
||||
*/
|
||||
int esp_tls_conn_new_async(const char *hostname, int hostlen, int port, const esp_tls_cfg_t *cfg , esp_tls_t *tls)
|
||||
int esp_tls_conn_new_async(const char *hostname, int hostlen, int port, const esp_tls_cfg_t *cfg, esp_tls_t *tls)
|
||||
{
|
||||
return esp_tls_low_level_conn(hostname, hostlen, port, cfg, tls);
|
||||
}
|
||||
@ -707,23 +371,16 @@ esp_tls_t *esp_tls_conn_http_new(const char *url, const esp_tls_cfg_t *cfg)
|
||||
struct http_parser_url u;
|
||||
http_parser_url_init(&u);
|
||||
http_parser_parse_url(url, strlen(url), 0, &u);
|
||||
|
||||
/* Connect to host */
|
||||
return esp_tls_conn_new(&url[u.field_data[UF_HOST].off], u.field_data[UF_HOST].len,
|
||||
get_port(url, &u), cfg);
|
||||
}
|
||||
|
||||
size_t esp_tls_get_bytes_avail(esp_tls_t *tls)
|
||||
{
|
||||
esp_tls_t *tls = esp_tls_init();
|
||||
if (!tls) {
|
||||
ESP_LOGE(TAG, "empty arg passed to esp_tls_get_bytes_avail()");
|
||||
return ESP_FAIL;
|
||||
return NULL;
|
||||
}
|
||||
#if CONFIG_SSL_USING_MBEDTLS
|
||||
return mbedtls_ssl_get_bytes_avail(&tls->ssl);
|
||||
#elif CONFIG_SSL_USING_WOLFSSL
|
||||
return wolfSSL_pending(tls->ssl);
|
||||
#endif
|
||||
/* Connect to host */
|
||||
if (esp_tls_conn_new_sync(&url[u.field_data[UF_HOST].off], u.field_data[UF_HOST].len,
|
||||
get_port(url, &u), cfg, tls) == 1) {
|
||||
return tls;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -738,5 +395,66 @@ int esp_tls_conn_http_new_async(const char *url, const esp_tls_cfg_t *cfg, esp_t
|
||||
|
||||
/* Connect to host */
|
||||
return esp_tls_conn_new_async(&url[u.field_data[UF_HOST].off], u.field_data[UF_HOST].len,
|
||||
get_port(url, &u), cfg, tls);
|
||||
}
|
||||
get_port(url, &u), cfg, tls);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ESP_TLS_USING_MBEDTLS
|
||||
|
||||
mbedtls_x509_crt *esp_tls_get_global_ca_store(void)
|
||||
{
|
||||
return _esp_tls_get_global_ca_store();
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ESP_TLS_SERVER
|
||||
/**
|
||||
* @brief Create a server side TLS/SSL connection
|
||||
*/
|
||||
int esp_tls_server_session_create(esp_tls_cfg_server_t *cfg, int sockfd, esp_tls_t *tls)
|
||||
{
|
||||
return _esp_tls_server_session_create(cfg, sockfd, tls);
|
||||
}
|
||||
/**
|
||||
* @brief Close the server side TLS/SSL connection and free any allocated resources.
|
||||
*/
|
||||
void esp_tls_server_session_delete(esp_tls_t *tls)
|
||||
{
|
||||
return _esp_tls_server_session_delete(tls);
|
||||
}
|
||||
#endif /* CONFIG_ESP_TLS_SERVER */
|
||||
#endif /* CONFIG_ESP_TLS_USING_MBEDTLS */
|
||||
|
||||
ssize_t esp_tls_get_bytes_avail(esp_tls_t *tls)
|
||||
{
|
||||
return _esp_tls_get_bytes_avail(tls);
|
||||
}
|
||||
|
||||
esp_err_t esp_tls_get_and_clear_last_error(esp_tls_error_handle_t h, int *esp_tls_code, int *esp_tls_flags)
|
||||
{
|
||||
if (!h) {
|
||||
return ESP_ERR_INVALID_STATE;
|
||||
}
|
||||
esp_err_t last_err = h->last_error;
|
||||
if (esp_tls_code) {
|
||||
*esp_tls_code = h->esp_tls_error_code;
|
||||
}
|
||||
if (esp_tls_flags) {
|
||||
*esp_tls_flags = h->esp_tls_flags;
|
||||
}
|
||||
memset(h, 0, sizeof(esp_tls_last_error_t));
|
||||
return last_err;
|
||||
}
|
||||
|
||||
esp_err_t esp_tls_init_global_ca_store(void)
|
||||
{
|
||||
return _esp_tls_init_global_ca_store();
|
||||
}
|
||||
|
||||
esp_err_t esp_tls_set_global_ca_store(const unsigned char *cacert_pem_buf, const unsigned int cacert_pem_bytes)
|
||||
{
|
||||
return _esp_tls_set_global_ca_store(cacert_pem_buf, cacert_pem_bytes);
|
||||
}
|
||||
|
||||
void esp_tls_free_global_ca_store(void)
|
||||
{
|
||||
return _esp_tls_free_global_ca_store();
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user