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- /* tls_sock.c
- *
- * Copyright (C) 2006-2023 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
- #include <wolfssl/options.h>
- #include <wolfssl/ssl.h>
- #define USE_CERT_BUFFERS_2048
- #include <wolfssl/certs_test.h>
- #include <wolfssl/test.h>
- #ifdef WOLFSSL_ZEPHYR
- #define printf printk
- #endif
- #define BUFFER_SIZE 2048
- #define STATIC_MEM_SIZE (96*1024)
- #define THREAD_STACK_SIZE (12*1024)
- #define MAX_SEND_SIZE 256
- /* The stack to use in the server's thread. */
- K_THREAD_STACK_DEFINE(server_stack, THREAD_STACK_SIZE);
- #ifdef WOLFSSL_STATIC_MEMORY
- static WOLFSSL_HEAP_HINT* HEAP_HINT_SERVER;
- static WOLFSSL_HEAP_HINT* HEAP_HINT_CLIENT;
- static byte gMemoryServer[STATIC_MEM_SIZE];
- static byte gMemoryClient[STATIC_MEM_SIZE];
- #else
- #define HEAP_HINT_SERVER NULL
- #define HEAP_HINT_CLIENT NULL
- #endif /* WOLFSSL_STATIC_MEMORY */
- /* Application data to send. */
- static const char msgHTTPGet[] = "GET /index.html HTTP/1.0\r\n\r\n";
- static const char msgHTTPIndex[] =
- "HTTP/1.1 200 OK\n"
- "Content-Type: text/html\n"
- "Connection: close\n"
- "\n"
- "<html>\n"
- "<head>\n"
- "<title>Welcome to wolfSSL!</title>\n"
- "</head>\n"
- "<body>\n"
- "<p>wolfSSL has successfully performed handshake!</p>\n"
- "</body>\n"
- "</html>\n";
- /* Create a new wolfSSL client with a server CA certificate. */
- static int wolfssl_client_new(WOLFSSL_CTX** ctx, WOLFSSL** ssl)
- {
- int ret = 0;
- WOLFSSL_CTX* client_ctx = NULL;
- WOLFSSL* client_ssl = NULL;
- /* Create and initialize WOLFSSL_CTX */
- if ((client_ctx = wolfSSL_CTX_new_ex(wolfTLSv1_2_client_method(),
- HEAP_HINT_CLIENT)) == NULL) {
- printf("ERROR: failed to create WOLFSSL_CTX\n");
- ret = -1;
- }
- if (ret == 0) {
- /* Load client certificates into WOLFSSL_CTX */
- if (wolfSSL_CTX_load_verify_buffer(client_ctx, ca_cert_der_2048,
- sizeof_ca_cert_der_2048, WOLFSSL_FILETYPE_ASN1) !=
- WOLFSSL_SUCCESS) {
- printf("ERROR: failed to load CA certificate\n");
- ret = -1;
- }
- }
- if (ret == 0) {
- /* Create a WOLFSSL object */
- if ((client_ssl = wolfSSL_new(client_ctx)) == NULL) {
- printf("ERROR: failed to create WOLFSSL object\n");
- ret = -1;
- }
- }
- if (ret == 0) {
- /* Return newly created wolfSSL context and object */
- *ctx = client_ctx;
- *ssl = client_ssl;
- }
- else {
- if (client_ssl != NULL)
- wolfSSL_free(client_ssl);
- if (client_ctx != NULL)
- wolfSSL_CTX_free(client_ctx);
- }
- return ret;
- }
- /* Client connecting to server using TLS */
- static int wolfssl_client_connect(WOLFSSL* ssl)
- {
- int ret = 0;
- if (wolfSSL_connect(ssl) != WOLFSSL_SUCCESS) {
- printf("wolfSSL Error: %d\n", wolfSSL_get_error(ssl, -1));
- if (!wolfSSL_want_read(ssl) && !wolfSSL_want_write(ssl))
- ret = -1;
- }
- return ret;
- }
- /* Create a new wolfSSL server with a certificate for authentication. */
- static int wolfssl_server_new(WOLFSSL_CTX** ctx, WOLFSSL** ssl)
- {
- int ret = 0;
- WOLFSSL_CTX* server_ctx = NULL;
- WOLFSSL* server_ssl = NULL;
- /* Create and initialize WOLFSSL_CTX */
- if ((server_ctx = wolfSSL_CTX_new_ex(wolfTLSv1_2_server_method(),
- HEAP_HINT_SERVER)) == NULL) {
- printf("ERROR: failed to create WOLFSSL_CTX\n");
- ret = -1;
- }
- if (ret == 0) {
- /* Load client certificates into WOLFSSL_CTX */
- if (wolfSSL_CTX_use_certificate_buffer(server_ctx,
- server_cert_der_2048, sizeof_server_cert_der_2048,
- WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) {
- printf("ERROR: failed to load server certificate\n");
- ret = -1;
- }
- }
- if (ret == 0) {
- /* Load client certificates into WOLFSSL_CTX */
- if (wolfSSL_CTX_use_PrivateKey_buffer(server_ctx,
- server_key_der_2048, sizeof_server_key_der_2048,
- WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) {
- printf("ERROR: failed to load server key\n");
- ret = -1;
- }
- }
- if (ret == 0) {
- /* Create a WOLFSSL object */
- if ((server_ssl = wolfSSL_new(server_ctx)) == NULL) {
- printf("ERROR: failed to create WOLFSSL object\n");
- ret = -1;
- }
- }
- if (ret == 0) {
- /* Return newly created wolfSSL context and object */
- *ctx = server_ctx;
- *ssl = server_ssl;
- }
- else {
- if (server_ssl != NULL)
- wolfSSL_free(server_ssl);
- if (server_ctx != NULL)
- wolfSSL_CTX_free(server_ctx);
- }
- return ret;
- }
- /* Server accepting a client using TLS */
- static int wolfssl_server_accept(WOLFSSL* ssl)
- {
- int ret = 0;
- if (wolfSSL_accept(ssl) != WOLFSSL_SUCCESS) {
- printf("wolfSSL Error: %d\n", wolfSSL_get_error(ssl, -1));
- if (!wolfSSL_want_read(ssl) && !wolfSSL_want_write(ssl))
- ret = -1;
- }
- return ret;
- }
- /* Send application data. */
- static int wolfssl_send(WOLFSSL* ssl, const char* msg)
- {
- int ret = 0;
- int len;
- printf("Sending:\n%s\n", msg);
- len = wolfSSL_write(ssl, msg, XSTRLEN(msg));
- if (len < 0)
- ret = len;
- else if (len != XSTRLEN(msg))
- ret = -1;
- return ret;
- }
- /* Receive application data. */
- static int wolfssl_recv(WOLFSSL* ssl)
- {
- int ret;
- byte reply[256];
- ret = wolfSSL_read(ssl, reply, sizeof(reply)-1);
- if (ret > 0) {
- reply[ret] = '\0';
- printf("Received:\n%s\n", reply);
- ret = 1;
- }
- else if (wolfSSL_want_read(ssl) || wolfSSL_want_write(ssl))
- ret = 0;
- return ret;
- }
- /* Free the WOLFSSL object and context. */
- static void wolfssl_free(WOLFSSL_CTX* ctx, WOLFSSL* ssl)
- {
- if (ssl != NULL)
- wolfSSL_free(ssl);
- if (ctx != NULL)
- wolfSSL_CTX_free(ctx);
- }
- /* Display the static memory usage. */
- static void wolfssl_memstats(WOLFSSL* ssl)
- {
- #ifdef WOLFSSL_STATIC_MEMORY
- WOLFSSL_MEM_CONN_STATS ssl_stats;
- XMEMSET(&ssl_stats, 0 , sizeof(ssl_stats));
- if (wolfSSL_is_static_memory(ssl, &ssl_stats) != 1)
- printf("static memory was not used with ssl");
- else {
- printf("*** This is memory state before wolfSSL_free is called\n");
- printf("peak connection memory = %d\n", ssl_stats.peakMem);
- printf("current memory in use = %d\n", ssl_stats.curMem);
- printf("peak connection allocs = %d\n", ssl_stats.peakAlloc);
- printf("current connection allocs = %d\n",ssl_stats.curAlloc);
- printf("total connection allocs = %d\n",ssl_stats.totalAlloc);
- printf("total connection frees = %d\n\n", ssl_stats.totalFr);
- }
- #else
- (void)ssl;
- #endif
- }
- /* Start the server thread. */
- void start_thread(THREAD_FUNC func, func_args* args, THREAD_TYPE* thread)
- {
- k_thread_create(thread, server_stack, K_THREAD_STACK_SIZEOF(server_stack),
- func, args, NULL, NULL, 5, 0, K_NO_WAIT);
- }
- void join_thread(THREAD_TYPE thread)
- {
- /* Threads are handled in the kernel. */
- }
- int wolfssl_server_accept_tcp(WOLFSSL* ssl, SOCKET_T* fd, SOCKET_T* acceptfd)
- {
- int ret = 0;
- SOCKET_T sockfd;
- SOCKET_T clientfd = WOLFSSL_SOCKET_INVALID;
- SOCKADDR_IN_T client;
- socklen_t client_len = sizeof(client);
- word16 port = 443;
- struct sockaddr_in bind_addr;
- sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- bind_addr.sin_family = AF_INET;
- bind_addr.sin_addr.s_addr = htonl(INADDR_ANY);
- bind_addr.sin_port = htons(port);
- if (bind(sockfd, (struct sockaddr *)&bind_addr, sizeof(bind_addr)) != 0)
- ret = -1;
- if (ret == 0) {
- *fd = sockfd;
- printf("Server Listen\n");
- listen(sockfd, 5);
- if (WOLFSSL_SOCKET_IS_INVALID(sockfd))
- ret = -1;
- }
- if (ret == 0) {
- printf("Server Accept\n");
- clientfd = accept(sockfd, (struct sockaddr*)&client,
- (ACCEPT_THIRD_T)&client_len);
- if (WOLFSSL_SOCKET_IS_INVALID(clientfd))
- ret = -1;
- }
- if (ret == 0) {
- *acceptfd = clientfd;
- tcp_set_nonblocking(&clientfd);
- printf("Server has client\n");
- if (wolfSSL_set_fd(ssl, clientfd) != WOLFSSL_SUCCESS)
- ret = -1;
- }
- return ret;
- }
- /* Thread to do the server operations. */
- void server_thread(void* arg1, void* arg2, void* arg3)
- {
- int ret = 0;
- WOLFSSL_CTX* server_ctx = NULL;
- WOLFSSL* server_ssl = NULL;
- SOCKET_T sockfd = WOLFSSL_SOCKET_INVALID;
- SOCKET_T clientfd = WOLFSSL_SOCKET_INVALID;
- #ifdef WOLFSSL_STATIC_MEMORY
- if (wc_LoadStaticMemory(&HEAP_HINT_SERVER, gMemoryServer,
- sizeof(gMemoryServer),
- WOLFMEM_GENERAL | WOLFMEM_TRACK_STATS, 1) != 0) {
- printf("unable to load static memory");
- ret = -1;
- }
- if (ret == 0)
- #endif
- ret = wolfssl_server_new(&server_ctx, &server_ssl);
- if (ret == 0)
- ret = wolfssl_server_accept_tcp(server_ssl, &sockfd, &clientfd);
- while (ret == 0) {
- k_sleep(Z_TIMEOUT_TICKS(100));
- ret = wolfssl_server_accept(server_ssl);
- if (ret == 0 && wolfSSL_is_init_finished(server_ssl))
- break;
- }
- /* Receive HTTP request */
- while (ret == 0) {
- ret = wolfssl_recv(server_ssl);
- }
- if (ret == 1)
- ret = 0;
- /* Send HTTP response */
- if (ret == 0)
- ret = wolfssl_send(server_ssl, msgHTTPIndex);
- printf("Server Return: %d\n", ret);
- #ifdef WOLFSSL_STATIC_MEMORY
- printf("Server Memory Stats\n");
- #endif
- wolfssl_memstats(server_ssl);
- wolfssl_free(server_ctx, server_ssl);
- if (clientfd != WOLFSSL_SOCKET_INVALID)
- CloseSocket(clientfd);
- if (sockfd != WOLFSSL_SOCKET_INVALID)
- CloseSocket(sockfd);
- }
- int wolfssl_client_connect_tcp(WOLFSSL* ssl, SOCKET_T* fd)
- {
- int ret = 0;
- SOCKET_T sockfd = WOLFSSL_SOCKET_INVALID;
- static struct addrinfo hints;
- struct addrinfo* res;
- XMEMSET(&hints, 0, sizeof(hints));
- hints.ai_family = AF_INET;
- hints.ai_socktype = SOCK_STREAM;
- if (getaddrinfo("192.0.2.1", "443", &hints, &res) != 0)
- ret = -1;
- if (ret == 0) {
- printf("Client socket\n");
- sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
- if (WOLFSSL_SOCKET_IS_INVALID(sockfd))
- ret = -1;
- }
- if (ret == 0) {
- *fd = sockfd;
- tcp_set_nonblocking(&sockfd);
- printf("Client Connect\n");
- if (connect(sockfd, res->ai_addr, res->ai_addrlen) != 0)
- ret = -1;
- }
- if (ret == 0) {
- printf("Client Connected\n");
- if (wolfSSL_set_fd(ssl, sockfd) != WOLFSSL_SUCCESS)
- ret = -1;
- }
- return ret;
- }
- /* Thread to do the client operations. */
- void client_thread()
- {
- int ret = 0;
- WOLFSSL_CTX* client_ctx = NULL;
- WOLFSSL* client_ssl = NULL;
- SOCKET_T sockfd = WOLFSSL_SOCKET_INVALID;
- #ifdef WOLFSSL_STATIC_MEMORY
- if (wc_LoadStaticMemory(&HEAP_HINT_CLIENT, gMemoryClient,
- sizeof(gMemoryClient),
- WOLFMEM_GENERAL | WOLFMEM_TRACK_STATS, 1) != 0) {
- printf("unable to load static memory");
- ret = -1;
- }
- if (ret == 0)
- #endif
- {
- /* Client connection */
- ret = wolfssl_client_new(&client_ctx, &client_ssl);
- }
- if (ret == 0)
- ret = wolfssl_client_connect_tcp(client_ssl, &sockfd);
- while (ret == 0) {
- k_sleep(Z_TIMEOUT_TICKS(10));
- ret = wolfssl_client_connect(client_ssl);
- if (ret == 0 && wolfSSL_is_init_finished(client_ssl))
- break;
- }
- if (ret == 0) {
- printf("Handshake complete\n");
- /* Send HTTP request */
- ret = wolfssl_send(client_ssl, msgHTTPGet);
- }
- /* Receive HTTP response */
- while (ret == 0) {
- k_sleep(Z_TIMEOUT_TICKS(10));
- ret = wolfssl_recv(client_ssl);
- }
- if (ret == 1)
- ret = 0;
- printf("Client Return: %d\n", ret);
- #ifdef WOLFSSL_STATIC_MEMORY
- printf("Client Memory Stats\n");
- #endif
- wolfssl_memstats(client_ssl);
- wolfssl_free(client_ctx, client_ssl);
- if (sockfd != WOLFSSL_SOCKET_INVALID)
- CloseSocket(sockfd);
- }
- int main()
- {
- THREAD_TYPE serverThread;
- wolfSSL_Init();
- #ifdef DEBUG_WOLFSSL
- wolfSSL_Debugging_ON();
- #endif
- /* Start server */
- start_thread(server_thread, NULL, &serverThread);
- k_sleep(Z_TIMEOUT_TICKS(100));
- client_thread();
- join_thread(serverThread);
- wolfSSL_Cleanup();
- printf("Done\n");
- return 0;
- }
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