133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/* client.c
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*
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* Copyright (C) 2006-2020 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "client.h"
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/* the usual suspects */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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/* socket includes */
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <unistd.h>
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/* utility functions shared between client and server */
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#include <shared/util.h>
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/* wolfSSL */
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#include <wolfssl/wolfcrypt/settings.h>
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#include <wolfssl/ssl.h>
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#include <wolfssl/certs_test.h>
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/* Azure Sphere */
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#include <applibs/networking.h>
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int main(int argc, char** argv)
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{
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bool isNetworkingReady = false;
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SOCKET_T sockfd = 0;
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char buff[256];
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size_t len;
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int ret;
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/* declare wolfSSL objects */
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WOLFSSL_CTX* ctx = NULL;
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WOLFSSL* ssl = NULL;
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util_PrintIfAddr();
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/* Check if the Azure Sphere Dev Board has network connectivity. */
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if ((Networking_IsNetworkingReady(&isNetworkingReady) < 0) || !isNetworkingReady) {
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fprintf(stderr, "ERROR: network is not up.\n");
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return -1;
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}
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ret = wolfIO_TcpConnect(&sockfd, SERVER_IP, DEFAULT_PORT, 0);
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if ((ret != 0) || ((int)sockfd < 0)) {
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fprintf(stderr, "ERROR: failed to create socket.");
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return -1;
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}
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/* Initialize wolfSSL */
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wolfSSL_Init();
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/* Create and initialize WOLFSSL_CTX */
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ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method());
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if (ctx == NULL) {
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fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Load client certificates into WOLFSSL_CTX */
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ret = wolfSSL_CTX_load_verify_buffer(ctx, CERT, SIZEOF_CERT, WOLFSSL_FILETYPE_ASN1);
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if (ret != SSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to load client certificate, "
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"please check the buffer.\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Create a WOLFSSL object */
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if ((ssl = wolfSSL_new(ctx)) == NULL) {
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fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Attach wolfSSL to the socket */
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wolfSSL_set_fd(ssl, sockfd);
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/* Connect to wolfSSL on the server side */
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if (wolfSSL_connect(ssl) != SSL_SUCCESS) {
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fprintf(stderr, "ERROR: failed to connect to wolfSSL\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Get length of message for server. */
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printf("\nMessage for server: %s\n",msg);
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len = strnlen(msg, sizeof(msg));
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/* Send the message to the server */
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if (wolfSSL_write(ssl, msg, (int)len) != len) {
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fprintf(stderr, "ERROR: failed to write\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Read the server data into our buff array */
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memset(buff, 0, sizeof(buff));
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if (wolfSSL_read(ssl, buff, sizeof(buff) - 1) == -1) {
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fprintf(stderr, "ERROR: failed to read\n");
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util_Cleanup(sockfd,ctx,ssl);
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return -1;
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}
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/* Print to stdout any data the server sends */
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printf("Server Reply: %s\n", buff);
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/* Cleanup and return */
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util_Cleanup(sockfd,ctx,ssl);
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return 0; /* Return reporting a success */
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}
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