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ebc52e694107fc9a9b5523ede24bfdd79d1c8d34
wolfssl/examples/client/client.c
Chris Conlon ebc52e6941 Corrected spelling mistakes, formatting
2011-08-04 16:42:55 -06:00

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/* client.c
*
* Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
*
* This file is part of CyaSSL.
*
* CyaSSL 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.
*
* CyaSSL 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "ssl.h"
#include "cyassl_test.h"
/*
#define TEST_RESUME
*/
#ifdef CYASSL_CALLBACKS
int handShakeCB(HandShakeInfo*);
int timeoutCB(TimeoutInfo*);
Timeval timeout;
#endif
#if defined(NON_BLOCKING) || defined(CYASSL_CALLBACKS)
void NonBlockingSSL_Connect(SSL* ssl)
{
#ifndef CYASSL_CALLBACKS
int ret = SSL_connect(ssl);
#else
int ret = CyaSSL_connect_ex(ssl, handShakeCB, timeoutCB, timeout);
#endif
int error = SSL_get_error(ssl, 0);
while (ret != SSL_SUCCESS && (error == SSL_ERROR_WANT_READ ||
error == SSL_ERROR_WANT_WRITE)) {
if (error == SSL_ERROR_WANT_READ)
printf("... client would read block\n");
else
printf("... client would write block\n");
#ifdef USE_WINDOWS_API
Sleep(100);
#else
sleep(1);
#endif
#ifndef CYASSL_CALLBACKS
ret = SSL_connect(ssl);
#else
ret = CyaSSL_connect_ex(ssl, handShakeCB, timeoutCB, timeout);
#endif
error = SSL_get_error(ssl, 0);
}
if (ret != SSL_SUCCESS)
err_sys("SSL_connect failed");
}
#endif
void client_test(void* args)
{
SOCKET_T sockfd = 0;
SSL_METHOD* method = 0;
SSL_CTX* ctx = 0;
SSL* ssl = 0;
#ifdef TEST_RESUME
SSL* sslResume = 0;
SSL_SESSION* session = 0;
char resumeMsg[] = "resuming cyassl!";
int resumeSz = sizeof(resumeMsg);
#endif
char msg[64] = "hello cyassl!";
char reply[1024];
int input;
int msgSz = strlen(msg);
int argc = ((func_args*)args)->argc;
char** argv = ((func_args*)args)->argv;
((func_args*)args)->return_code = -1; /* error state */
#if defined(CYASSL_DTLS)
method = DTLSv1_client_method();
#elif !defined(NO_TLS)
method = SSLv23_client_method();
#else
method = SSLv3_client_method();
#endif
ctx = SSL_CTX_new(method);
#ifndef NO_PSK
SSL_CTX_set_psk_client_callback(ctx, my_psk_client_cb);
#endif
#ifdef OPENSSL_EXTRA
SSL_CTX_set_default_passwd_cb(ctx, PasswordCallBack);
#endif
#if defined(CYASSL_SNIFFER) && !defined(HAVE_NTRU) && !defined(HAVE_ECC)
/* don't use EDH, can't sniff tmp keys */
SSL_CTX_set_cipher_list(ctx, "AES256-SHA");
#endif
#ifndef NO_FILESYSTEM
if (SSL_CTX_load_verify_locations(ctx, caCert, 0) != SSL_SUCCESS)
err_sys("can't load ca file");
#ifdef HAVE_ECC
if (SSL_CTX_load_verify_locations(ctx, eccCert, 0) != SSL_SUCCESS)
err_sys("can't load ca file");
#endif
#else
load_buffer(ctx, caCert, CYASSL_CA);
#endif
#ifdef VERIFY_CALLBACK
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, myVerify);
#endif
if (argc == 3) {
/* ./client server securePort */
SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, 0); /* TODO: add ca cert */
/* this is just to allow easy testing of other servers */
tcp_connect(&sockfd, argv[1], (short)atoi(argv[2]));
}
else if (argc == 1) {
/* ./client // plain mode */
/* for client cert authentication if server requests */
#ifndef NO_FILESYSTEM
if (SSL_CTX_use_certificate_file(ctx, cliCert, SSL_FILETYPE_PEM)
!= SSL_SUCCESS)
err_sys("can't load client cert file");
if (SSL_CTX_use_PrivateKey_file(ctx, cliKey, SSL_FILETYPE_PEM)
!= SSL_SUCCESS)
err_sys("can't load client key file");
#else
load_buffer(ctx, cliCert, CYASSL_CERT);
load_buffer(ctx, cliKey, CYASSL_KEY);
#endif
tcp_connect(&sockfd, yasslIP, yasslPort);
}
else if (argc == 2) {
/* time passed in number of connects give average */
int times = atoi(argv[1]);
int i = 0;
double start = current_time(), avg;
for (i = 0; i < times; i++) {
tcp_connect(&sockfd, yasslIP, yasslPort);
ssl = SSL_new(ctx);
SSL_set_fd(ssl, sockfd);
if (SSL_connect(ssl) != SSL_SUCCESS)
err_sys("SSL_connect failed");
SSL_shutdown(ssl);
SSL_free(ssl);
CloseSocket(sockfd);
}
avg = current_time() - start;
avg /= times;
avg *= 1000; /* milliseconds */
printf("SSL_connect avg took:%6.3f milliseconds\n", avg);
SSL_CTX_free(ctx);
((func_args*)args)->return_code = 0;
return;
}
else
err_sys("usage: ./client server securePort");
ssl = SSL_new(ctx);
SSL_set_fd(ssl, sockfd);
if (argc != 3)
CyaSSL_check_domain_name(ssl, "www.yassl.com");
#ifdef NON_BLOCKING
tcp_set_nonblocking(&sockfd);
NonBlockingSSL_Connect(ssl);
#else
#ifndef CYASSL_CALLBACKS
if (SSL_connect(ssl) != SSL_SUCCESS) { /* see note at top of README */
int err = SSL_get_error(ssl, 0);
char buffer[80];
printf("err = %d, %s\n", err, ERR_error_string(err, buffer));
err_sys("SSL_connect failed");/* if you're getting an error here */
}
#else
timeout.tv_sec = 2;
timeout.tv_usec = 0;
NonBlockingSSL_Connect(ssl); /* will keep retrying on timeout */
#endif
#endif
showPeer(ssl);
if (argc == 3) {
printf("SSL connect ok, sending GET...\n");
msgSz = 28;
strncpy(msg, "GET /index.html HTTP/1.0\r\n\r\n", msgSz);
}
if (SSL_write(ssl, msg, msgSz) != msgSz)
err_sys("SSL_write failed");
input = SSL_read(ssl, reply, sizeof(reply));
if (input > 0) {
reply[input] = 0;
printf("Server response: %s\n", reply);
if (argc == 3) { /* get html */
while (1) {
input = SSL_read(ssl, reply, sizeof(reply));
if (input > 0) {
reply[input] = 0;
printf("%s\n", reply);
}
else
break;
}
}
}
#ifdef TEST_RESUME
#ifdef CYASSL_DTLS
strncpy(msg, "break", 6);
msgSz = (int)strlen(msg);
/* try to send session close */
SSL_write(ssl, msg, msgSz);
#endif
session = SSL_get_session(ssl);
sslResume = SSL_new(ctx);
#endif
SSL_shutdown(ssl);
SSL_free(ssl);
CloseSocket(sockfd);
#ifdef TEST_RESUME
#ifdef CYASSL_DTLS
#ifdef USE_WINDOWS_API
Sleep(500);
#else
sleep(1);
#endif
#endif
if (argc == 3)
tcp_connect(&sockfd, argv[1], (short)atoi(argv[2]));
else
tcp_connect(&sockfd, yasslIP, yasslPort);
SSL_set_fd(sslResume, sockfd);
SSL_set_session(sslResume, session);
showPeer(sslResume);
if (SSL_connect(sslResume) != SSL_SUCCESS) err_sys("SSL resume failed");
#ifdef OPENSSL_EXTRA
if (SSL_session_reused(sslResume))
printf("reused session id\n");
else
printf("didn't reuse session id!!!\n");
#endif
if (SSL_write(sslResume, resumeMsg, resumeSz) != resumeSz)
err_sys("SSL_write failed");
input = SSL_read(sslResume, reply, sizeof(reply));
if (input > 0) {
reply[input] = 0;
printf("Server resume response: %s\n", reply);
}
/* try to send session break */
SSL_write(sslResume, msg, msgSz);
SSL_shutdown(sslResume);
SSL_free(sslResume);
#endif /* TEST_RESUME */
SSL_CTX_free(ctx);
CloseSocket(sockfd);
((func_args*)args)->return_code = 0;
}
/* so overall tests can pull in test function */
#ifndef NO_MAIN_DRIVER
int main(int argc, char** argv)
{
func_args args;
StartTCP();
args.argc = argc;
args.argv = argv;
CyaSSL_Init();
#ifdef DEBUG_CYASSL
CyaSSL_Debugging_ON();
#endif
client_test(&args);
CyaSSL_Cleanup();
return args.return_code;
}
#endif /* NO_MAIN_DRIVER */
#ifdef CYASSL_CALLBACKS
int handShakeCB(HandShakeInfo* info)
{
return 0;
}
int timeoutCB(TimeoutInfo* info)
{
return 0;
}
#endif
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