139 lines
4 KiB
C
139 lines
4 KiB
C
/* client.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 "client.h"
|
|
/* the usual suspects */
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/* socket includes */
|
|
#include <sys/socket.h>
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <unistd.h>
|
|
|
|
/* utility functions shared between client and server */
|
|
#include <shared/util.h>
|
|
|
|
/* wolfSSL */
|
|
#include <wolfssl/wolfcrypt/settings.h>
|
|
#include <wolfssl/ssl.h>
|
|
#include <wolfssl/certs_test.h>
|
|
|
|
/* Azure Sphere */
|
|
#include <applibs/networking.h>
|
|
|
|
|
|
#ifndef NO_MAIN_DRIVER
|
|
int main(int argc, char** argv)
|
|
#else
|
|
int azsphere_client_app(int argc, char** argv)
|
|
#endif
|
|
{
|
|
bool isNetworkingReady = false;
|
|
SOCKET_T sockfd = 0;
|
|
char buff[256];
|
|
size_t len;
|
|
int ret;
|
|
|
|
/* declare wolfSSL objects */
|
|
WOLFSSL_CTX* ctx = NULL;
|
|
WOLFSSL* ssl = NULL;
|
|
|
|
util_PrintIfAddr();
|
|
|
|
/* Check if the Azure Sphere Dev Board has network connectivity. */
|
|
if ((Networking_IsNetworkingReady(&isNetworkingReady) < 0) || !isNetworkingReady) {
|
|
fprintf(stderr, "ERROR: network is not up.\n");
|
|
return -1;
|
|
}
|
|
|
|
ret = wolfIO_TcpConnect(&sockfd, SERVER_IP, DEFAULT_PORT, 0);
|
|
if ((ret != 0) || ((int)sockfd < 0)) {
|
|
fprintf(stderr, "ERROR: failed to create socket.");
|
|
return -1;
|
|
}
|
|
|
|
/* Initialize wolfSSL */
|
|
wolfSSL_Init();
|
|
|
|
/* Create and initialize WOLFSSL_CTX */
|
|
ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method());
|
|
if (ctx == NULL) {
|
|
fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Load client certificates into WOLFSSL_CTX */
|
|
ret = wolfSSL_CTX_load_verify_buffer(ctx, CERT, SIZEOF_CERT, WOLFSSL_FILETYPE_ASN1);
|
|
if (ret != SSL_SUCCESS) {
|
|
fprintf(stderr, "ERROR: failed to load client certificate, "
|
|
"please check the buffer.\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Create a WOLFSSL object */
|
|
if ((ssl = wolfSSL_new(ctx)) == NULL) {
|
|
fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Attach wolfSSL to the socket */
|
|
wolfSSL_set_fd(ssl, sockfd);
|
|
|
|
/* Connect to wolfSSL on the server side */
|
|
if (wolfSSL_connect(ssl) != SSL_SUCCESS) {
|
|
fprintf(stderr, "ERROR: failed to connect to wolfSSL\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Get length of message for server. */
|
|
printf("\nMessage for server: %s\n",msg);
|
|
len = strnlen(msg, sizeof(msg));
|
|
|
|
/* Send the message to the server */
|
|
if (wolfSSL_write(ssl, msg, (int)len) != len) {
|
|
fprintf(stderr, "ERROR: failed to write\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Read the server data into our buff array */
|
|
memset(buff, 0, sizeof(buff));
|
|
if (wolfSSL_read(ssl, buff, sizeof(buff) - 1) == -1) {
|
|
fprintf(stderr, "ERROR: failed to read\n");
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return -1;
|
|
}
|
|
|
|
/* Print to stdout any data the server sends */
|
|
printf("Server Reply: %s\n", buff);
|
|
|
|
/* Cleanup and return */
|
|
util_Cleanup(sockfd,ctx,ssl);
|
|
return 0; /* Return reporting a success */
|
|
}
|