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68e5124644870d24463177b5a73bb2e0abcb833f
wolfssl/examples/client/client.c

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/* client.c
*
* Copyright (C) 2006-2012 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <cyassl/ssl.h>
#include <cyassl/test.h>
#include <sysexits.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(CyaSSL* ssl)
{
#ifndef CYASSL_CALLBACKS
int ret = CyaSSL_connect(ssl);
#else
int ret = CyaSSL_connect_ex(ssl, handShakeCB, timeoutCB, timeout);
#endif
int error = CyaSSL_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 = CyaSSL_connect(ssl);
#else
ret = CyaSSL_connect_ex(ssl, handShakeCB, timeoutCB, timeout);
#endif
error = CyaSSL_get_error(ssl, 0);
}
if (ret != SSL_SUCCESS)
err_sys("SSL_connect failed");
}
#endif
static void Usage(void)
{
printf("client " VERSION " NOTE: All files relative to CyaSSL home dir"
"\n");
printf("-? Help, print this usage\n");
printf("-h <host> Host to connect to, default %s\n", yasslIP);
printf("-p <num> Port to connect on, default %d\n", yasslPort);
printf("-v <num> SSL version [0-3], SSLv3(0) - TLS1.2(3)), default %d\n",
CLIENT_DEFAULT_VERSION);
printf("-l <str> Cipher list\n");
printf("-c <file> Certificate file, default %s\n", cliCert);
printf("-k <file> Key file, default %s\n", cliKey);
printf("-A <file> Certificate Authority file, default %s\n", caCert);
printf("-b <num> Benchmark <num> connections and print stats\n");
printf("-s Use pre Shared keys\n");
printf("-d Disable peer checks\n");
printf("-g Send server HTTP GET\n");
}
void client_test(void* args)
{
SOCKET_T sockfd = 0;
CYASSL_METHOD* method = 0;
CYASSL_CTX* ctx = 0;
CYASSL* ssl = 0;
#ifdef TEST_RESUME
CYASSL* sslResume = 0;
CYASSL_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 port = yasslPort;
char* host = (char*)yasslIP;
char* domain = "www.yassl.com";
int ch;
int version = CLIENT_DEFAULT_VERSION;
int usePsk = 0;
int sendGET = 0;
int benchmark = 0;
int doPeerCheck = 1;
char* cipherList = NULL;
char* verifyCert = (char*)caCert;
char* ourCert = (char*)cliCert;
char* ourKey = (char*)cliKey;
int argc = ((func_args*)args)->argc;
char** argv = ((func_args*)args)->argv;
((func_args*)args)->return_code = -1; /* error state */
while ((ch = getopt(argc, argv, "?gdsh:p:v:l:A:c:k:b:")) != -1) {
switch (ch) {
case '?' :
Usage();
exit(EXIT_SUCCESS);
case 'g' :
sendGET = 1;
break;
case 'd' :
doPeerCheck = 0;
break;
case 's' :
usePsk = 1;
break;
case 'h' :
host = optarg;
domain = optarg;
break;
case 'p' :
port = atoi(optarg);
break;
case 'v' :
version = atoi(optarg);
if (version < 0 || version > 3) {
Usage();
exit(EX_USAGE);
}
break;
case 'l' :
cipherList = optarg;
break;
case 'A' :
verifyCert = optarg;
break;
case 'c' :
ourCert = optarg;
break;
case 'k' :
ourKey = optarg;
break;
case 'b' :
benchmark = atoi(optarg);
if (benchmark < 0 || benchmark > 1000000) {
Usage();
exit(EX_USAGE);
}
break;
default:
Usage();
exit(EX_USAGE);
}
}
argc -= optind;
argv += optind;
switch (version) {
case 0:
method = CyaSSLv3_client_method();
break;
case 1:
method = CyaTLSv1_client_method();
break;
case 2:
method = CyaTLSv1_1_client_method();
break;
case 3:
method = CyaTLSv1_2_client_method();
break;
default:
err_sys("Bad SSL version");
}
if (method == NULL)
err_sys("unable to get method");
ctx = CyaSSL_CTX_new(method);
if (ctx == NULL)
err_sys("unable to get ctx");
if (cipherList)
if (CyaSSL_CTX_set_cipher_list(ctx, cipherList) != SSL_SUCCESS)
err_sys("can't set cipher list");
#ifndef NO_PSK
if (usePsk)
CyaSSL_CTX_set_psk_client_callback(ctx, my_psk_client_cb);
#endif
#ifdef OPENSSL_EXTRA
CyaSSL_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 */
if (cipherList == NULL)
if (CyaSSL_CTX_set_cipher_list(ctx, "AES256-SHA") != SSL_SUCCESS)
err_sys("can't set cipher list");
#endif
#ifdef USER_CA_CB
CyaSSL_CTX_SetCACb(ctx, CaCb);
#endif
#ifdef VERIFY_CALLBACK
CyaSSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, myVerify);
#endif
if (CyaSSL_CTX_use_certificate_file(ctx, ourCert, SSL_FILETYPE_PEM)
!= SSL_SUCCESS)
err_sys("can't load client cert file, check file and run from"
" CyaSSL home dir");
if (CyaSSL_CTX_use_PrivateKey_file(ctx, ourKey, SSL_FILETYPE_PEM)
!= SSL_SUCCESS)
err_sys("can't load client cert file, check file and run from"
" CyaSSL home dir");
if (CyaSSL_CTX_load_verify_locations(ctx, verifyCert, 0) != SSL_SUCCESS)
err_sys("can't load ca file, Please run from CyaSSL home dir");
if (doPeerCheck == 0)
CyaSSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, 0);
if (benchmark) {
/* time passed in number of connects give average */
int times = benchmark;
int i = 0;
double start = current_time(), avg;
for (i = 0; i < times; i++) {
tcp_connect(&sockfd, host, port);
ssl = CyaSSL_new(ctx);
CyaSSL_set_fd(ssl, sockfd);
if (CyaSSL_connect(ssl) != SSL_SUCCESS)
err_sys("SSL_connect failed");
CyaSSL_shutdown(ssl);
CyaSSL_free(ssl);
CloseSocket(sockfd);
}
avg = current_time() - start;
avg /= times;
avg *= 1000; /* milliseconds */
printf("CyaSSL_connect avg took: %8.3f milliseconds\n", avg);
CyaSSL_CTX_free(ctx);
((func_args*)args)->return_code = 0;
exit(EXIT_SUCCESS);
}
tcp_connect(&sockfd, host, port);
ssl = CyaSSL_new(ctx);
if (ssl == NULL)
err_sys("unable to get SSL object");
CyaSSL_set_fd(ssl, sockfd);
#ifdef HAVE_CRL
CyaSSL_EnableCRL(ssl, CYASSL_CRL_CHECKALL);
CyaSSL_LoadCRL(ssl, crlPemDir, SSL_FILETYPE_PEM, 0);
CyaSSL_SetCRL_Cb(ssl, CRL_CallBack);
#endif
if (doPeerCheck)
CyaSSL_check_domain_name(ssl, domain);
#ifdef NON_BLOCKING
tcp_set_nonblocking(&sockfd);
NonBlockingSSL_Connect(ssl);
#else
#ifndef CYASSL_CALLBACKS
if (CyaSSL_connect(ssl) != SSL_SUCCESS) {/* see note at top of README */
int err = CyaSSL_get_error(ssl, 0);
char buffer[80];
printf("err = %d, %s\n", err, CyaSSL_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 (sendGET) {
printf("SSL connect ok, sending GET...\n");
msgSz = 28;
strncpy(msg, "GET /index.html HTTP/1.0\r\n\r\n", msgSz);
}
if (CyaSSL_write(ssl, msg, msgSz) != msgSz)
err_sys("SSL_write failed");
input = CyaSSL_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 = CyaSSL_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 */
CyaSSL_write(ssl, msg, msgSz);
#endif
session = CyaSSL_get_session(ssl);
sslResume = CyaSSL_new(ctx);
#endif
CyaSSL_shutdown(ssl);
CyaSSL_free(ssl);
CloseSocket(sockfd);
#ifdef TEST_RESUME
#ifdef CYASSL_DTLS
#ifdef USE_WINDOWS_API
Sleep(500);
#else
sleep(1);
#endif
#endif
tcp_connect(&sockfd, host, port);
CyaSSL_set_fd(sslResume, sockfd);
CyaSSL_set_session(sslResume, session);
showPeer(sslResume);
if (CyaSSL_connect(sslResume) != SSL_SUCCESS) err_sys("SSL resume failed");
#ifdef OPENSSL_EXTRA
if (CyaSSL_session_reused(sslResume))
printf("reused session id\n");
else
printf("didn't reuse session id!!!\n");
#endif
if (CyaSSL_write(sslResume, resumeMsg, resumeSz) != resumeSz)
err_sys("SSL_write failed");
input = CyaSSL_read(sslResume, reply, sizeof(reply));
if (input > 0) {
reply[input] = 0;
printf("Server resume response: %s\n", reply);
}
/* try to send session break */
CyaSSL_write(sslResume, msg, msgSz);
CyaSSL_shutdown(sslResume);
CyaSSL_free(sslResume);
#endif /* TEST_RESUME */
CyaSSL_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
if (CurrentDir("client") || CurrentDir("build"))
ChangeDirBack(2);
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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