Ejemplo n.º 1
0
BOOL tls_accept(rdpTls* tls, BIO* underlying, rdpSettings* settings)
{
	long options = 0;
	BIO* bio;
	RSA* rsa;
	X509* x509;
	/**
	 * SSL_OP_NO_SSLv2:
	 *
	 * We only want SSLv3 and TLSv1, so disable SSLv2.
	 * SSLv3 is used by, eg. Microsoft RDC for Mac OS X.
	 */
	options |= SSL_OP_NO_SSLv2;
	/**
	 * SSL_OP_NO_COMPRESSION:
	 *
	 * The Microsoft RDP server does not advertise support
	 * for TLS compression, but alternative servers may support it.
	 * This was observed between early versions of the FreeRDP server
	 * and the FreeRDP client, and caused major performance issues,
	 * which is why we're disabling it.
	 */
#ifdef SSL_OP_NO_COMPRESSION
	options |= SSL_OP_NO_COMPRESSION;
#endif
	/**
	 * SSL_OP_TLS_BLOCK_PADDING_BUG:
	 *
	 * The Microsoft RDP server does *not* support TLS padding.
	 * It absolutely needs to be disabled otherwise it won't work.
	 */
	options |= SSL_OP_TLS_BLOCK_PADDING_BUG;
	/**
	 * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS:
	 *
	 * Just like TLS padding, the Microsoft RDP server does not
	 * support empty fragments. This needs to be disabled.
	 */
	options |= SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;

	if (!tls_prepare(tls, underlying, SSLv23_server_method(), options, FALSE))
		return FALSE;

	if (settings->PrivateKeyFile)
	{
		bio = BIO_new_file(settings->PrivateKeyFile, "rb");

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_file failed for private key %s",
			         settings->PrivateKeyFile);
			return FALSE;
		}
	}
	else if (settings->PrivateKeyContent)
	{
		bio = BIO_new_mem_buf(settings->PrivateKeyContent,
		                      strlen(settings->PrivateKeyContent));

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_mem_buf failed for private key");
			return FALSE;
		}
	}
	else
	{
		WLog_ERR(TAG, "no private key defined");
		return FALSE;
	}

	rsa = PEM_read_bio_RSAPrivateKey(bio, NULL, NULL, NULL);
	BIO_free(bio);

	if (!rsa)
	{
		WLog_ERR(TAG, "invalid private key");
		return FALSE;
	}

	if (SSL_use_RSAPrivateKey(tls->ssl, rsa) <= 0)
	{
		WLog_ERR(TAG, "SSL_CTX_use_RSAPrivateKey_file failed");
		RSA_free(rsa);
		return FALSE;
	}

	if (settings->CertificateFile)
	{
		bio = BIO_new_file(settings->CertificateFile, "rb");

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_file failed for certificate %s",
			         settings->CertificateFile);
			return FALSE;
		}
	}
	else if (settings->CertificateContent)
	{
		bio = BIO_new_mem_buf(settings->CertificateContent,
		                      strlen(settings->CertificateContent));

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_mem_buf failed for certificate");
			return FALSE;
		}
	}
	else
	{
		WLog_ERR(TAG, "no certificate defined");
		return FALSE;
	}

	x509 = PEM_read_bio_X509(bio, NULL, NULL, 0);
	BIO_free(bio);

	if (!x509)
	{
		WLog_ERR(TAG, "invalid certificate");
		return FALSE;
	}

	if (SSL_use_certificate(tls->ssl, x509) <= 0)
	{
		WLog_ERR(TAG, "SSL_use_certificate_file failed");
		X509_free(x509);
		return FALSE;
	}

#if defined(MICROSOFT_IOS_SNI_BUG) && !defined(OPENSSL_NO_TLSEXT)
	SSL_set_tlsext_debug_callback(tls->ssl, tls_openssl_tlsext_debug_callback);
#endif
	return tls_do_handshake(tls, FALSE) > 0;
}
Ejemplo n.º 2
0
int
s_client_main(int argc, char **argv)
{
	unsigned int off = 0, clr = 0;
	SSL *con = NULL;
	int s, k, width, state = 0, af = AF_UNSPEC;
	char *cbuf = NULL, *sbuf = NULL, *mbuf = NULL;
	int cbuf_len, cbuf_off;
	int sbuf_len, sbuf_off;
	fd_set readfds, writefds;
	char *port = PORT_STR;
	int full_log = 1;
	char *host = SSL_HOST_NAME;
	char *cert_file = NULL, *key_file = NULL;
	int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
	char *passarg = NULL, *pass = NULL;
	X509 *cert = NULL;
	EVP_PKEY *key = NULL;
	char *CApath = NULL, *CAfile = NULL, *cipher = NULL;
	int reconnect = 0, badop = 0, verify = SSL_VERIFY_NONE, bugs = 0;
	int crlf = 0;
	int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
	SSL_CTX *ctx = NULL;
	int ret = 1, in_init = 1, i, nbio_test = 0;
	int starttls_proto = PROTO_OFF;
	int prexit = 0;
	X509_VERIFY_PARAM *vpm = NULL;
	int badarg = 0;
	const SSL_METHOD *meth = NULL;
	int socket_type = SOCK_STREAM;
	BIO *sbio;
	int mbuf_len = 0;
	struct timeval timeout, *timeoutp;
	const char *errstr = NULL;
#ifndef OPENSSL_NO_ENGINE
	char *engine_id = NULL;
	char *ssl_client_engine_id = NULL;
	ENGINE *ssl_client_engine = NULL;
#endif
	ENGINE *e = NULL;
#ifndef OPENSSL_NO_TLSEXT
	char *servername = NULL;
	tlsextctx tlsextcbp =
	{NULL, 0};
#ifndef OPENSSL_NO_NEXTPROTONEG
	const char *next_proto_neg_in = NULL;
#endif
#endif
	char *sess_in = NULL;
	char *sess_out = NULL;
	struct sockaddr peer;
	int peerlen = sizeof(peer);
	int enable_timeouts = 0;
	long socket_mtu = 0;

	meth = SSLv23_client_method();

	c_Pause = 0;
	c_quiet = 0;
	c_ign_eof = 0;
	c_debug = 0;
	c_msg = 0;
	c_showcerts = 0;

	if (((cbuf = malloc(BUFSIZZ)) == NULL) ||
	    ((sbuf = malloc(BUFSIZZ)) == NULL) ||
	    ((mbuf = malloc(BUFSIZZ + 1)) == NULL)) {	/* NUL byte */
		BIO_printf(bio_err, "out of memory\n");
		goto end;
	}
	verify_depth = 0;
	verify_error = X509_V_OK;
	c_nbio = 0;

	argc--;
	argv++;
	while (argc >= 1) {
		if (strcmp(*argv, "-host") == 0) {
			if (--argc < 1)
				goto bad;
			host = *(++argv);
		} else if (strcmp(*argv, "-port") == 0) {
			if (--argc < 1)
				goto bad;
			port = *(++argv);
			if (port == NULL || *port == '\0')
				goto bad;
		} else if (strcmp(*argv, "-connect") == 0) {
			if (--argc < 1)
				goto bad;
			if (!extract_host_port(*(++argv), &host, NULL, &port))
				goto bad;
		} else if (strcmp(*argv, "-verify") == 0) {
			verify = SSL_VERIFY_PEER;
			if (--argc < 1)
				goto bad;
			verify_depth = strtonum(*(++argv), 0, INT_MAX, &errstr);
			if (errstr)
				goto bad;
			BIO_printf(bio_err, "verify depth is %d\n", verify_depth);
		} else if (strcmp(*argv, "-cert") == 0) {
			if (--argc < 1)
				goto bad;
			cert_file = *(++argv);
		} else if (strcmp(*argv, "-sess_out") == 0) {
			if (--argc < 1)
				goto bad;
			sess_out = *(++argv);
		} else if (strcmp(*argv, "-sess_in") == 0) {
			if (--argc < 1)
				goto bad;
			sess_in = *(++argv);
		} else if (strcmp(*argv, "-certform") == 0) {
			if (--argc < 1)
				goto bad;
			cert_format = str2fmt(*(++argv));
		} else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
			if (badarg)
				goto bad;
			continue;
		} else if (strcmp(*argv, "-verify_return_error") == 0)
			verify_return_error = 1;
		else if (strcmp(*argv, "-prexit") == 0)
			prexit = 1;
		else if (strcmp(*argv, "-crlf") == 0)
			crlf = 1;
		else if (strcmp(*argv, "-quiet") == 0) {
			c_quiet = 1;
			c_ign_eof = 1;
		} else if (strcmp(*argv, "-ign_eof") == 0)
			c_ign_eof = 1;
		else if (strcmp(*argv, "-no_ign_eof") == 0)
			c_ign_eof = 0;
		else if (strcmp(*argv, "-pause") == 0)
			c_Pause = 1;
		else if (strcmp(*argv, "-debug") == 0)
			c_debug = 1;
#ifndef OPENSSL_NO_TLSEXT
		else if (strcmp(*argv, "-tlsextdebug") == 0)
			c_tlsextdebug = 1;
		else if (strcmp(*argv, "-status") == 0)
			c_status_req = 1;
#endif
		else if (strcmp(*argv, "-msg") == 0)
			c_msg = 1;
		else if (strcmp(*argv, "-showcerts") == 0)
			c_showcerts = 1;
		else if (strcmp(*argv, "-nbio_test") == 0)
			nbio_test = 1;
		else if (strcmp(*argv, "-state") == 0)
			state = 1;
		else if (strcmp(*argv, "-ssl3") == 0)
			meth = SSLv3_client_method();
		else if (strcmp(*argv, "-tls1_2") == 0)
			meth = TLSv1_2_client_method();
		else if (strcmp(*argv, "-tls1_1") == 0)
			meth = TLSv1_1_client_method();
		else if (strcmp(*argv, "-tls1") == 0)
			meth = TLSv1_client_method();
#ifndef OPENSSL_NO_DTLS1
		else if (strcmp(*argv, "-dtls1") == 0) {
			meth = DTLSv1_client_method();
			socket_type = SOCK_DGRAM;
		} else if (strcmp(*argv, "-timeout") == 0)
			enable_timeouts = 1;
		else if (strcmp(*argv, "-mtu") == 0) {
			if (--argc < 1)
				goto bad;
			socket_mtu = strtonum(*(++argv), 0, LONG_MAX, &errstr);
			if (errstr)
				goto bad;
		}
#endif
		else if (strcmp(*argv, "-bugs") == 0)
			bugs = 1;
		else if (strcmp(*argv, "-keyform") == 0) {
			if (--argc < 1)
				goto bad;
			key_format = str2fmt(*(++argv));
		} else if (strcmp(*argv, "-pass") == 0) {
			if (--argc < 1)
				goto bad;
			passarg = *(++argv);
		} else if (strcmp(*argv, "-key") == 0) {
			if (--argc < 1)
				goto bad;
			key_file = *(++argv);
		} else if (strcmp(*argv, "-reconnect") == 0) {
			reconnect = 5;
		} else if (strcmp(*argv, "-CApath") == 0) {
			if (--argc < 1)
				goto bad;
			CApath = *(++argv);
		} else if (strcmp(*argv, "-CAfile") == 0) {
			if (--argc < 1)
				goto bad;
			CAfile = *(++argv);
		} else if (strcmp(*argv, "-no_tls1_2") == 0)
			off |= SSL_OP_NO_TLSv1_2;
		else if (strcmp(*argv, "-no_tls1_1") == 0)
			off |= SSL_OP_NO_TLSv1_1;
		else if (strcmp(*argv, "-no_tls1") == 0)
			off |= SSL_OP_NO_TLSv1;
		else if (strcmp(*argv, "-no_ssl3") == 0)
			off |= SSL_OP_NO_SSLv3;
		else if (strcmp(*argv, "-no_ssl2") == 0)
			off |= SSL_OP_NO_SSLv2;
		else if (strcmp(*argv, "-no_comp") == 0) {
			off |= SSL_OP_NO_COMPRESSION;
		}
#ifndef OPENSSL_NO_TLSEXT
		else if (strcmp(*argv, "-no_ticket") == 0) {
			off |= SSL_OP_NO_TICKET;
		}
#ifndef OPENSSL_NO_NEXTPROTONEG
		else if (strcmp(*argv, "-nextprotoneg") == 0) {
			if (--argc < 1)
				goto bad;
			next_proto_neg_in = *(++argv);
		}
#endif
#endif
		else if (strcmp(*argv, "-serverpref") == 0)
			off |= SSL_OP_CIPHER_SERVER_PREFERENCE;
		else if (strcmp(*argv, "-legacy_renegotiation") == 0)
			; /* no-op */
		else if (strcmp(*argv, "-legacy_server_connect") == 0) {
			off |= SSL_OP_LEGACY_SERVER_CONNECT;
		} else if (strcmp(*argv, "-no_legacy_server_connect") == 0) {
			clr |= SSL_OP_LEGACY_SERVER_CONNECT;
		} else if (strcmp(*argv, "-cipher") == 0) {
			if (--argc < 1)
				goto bad;
			cipher = *(++argv);
		}
		else if (strcmp(*argv, "-nbio") == 0) {
			c_nbio = 1;
		}
		else if (strcmp(*argv, "-starttls") == 0) {
			if (--argc < 1)
				goto bad;
			++argv;
			if (strcmp(*argv, "smtp") == 0)
				starttls_proto = PROTO_SMTP;
			else if (strcmp(*argv, "lmtp") == 0)
				starttls_proto = PROTO_LMTP;
			else if (strcmp(*argv, "pop3") == 0)
				starttls_proto = PROTO_POP3;
			else if (strcmp(*argv, "imap") == 0)
				starttls_proto = PROTO_IMAP;
			else if (strcmp(*argv, "ftp") == 0)
				starttls_proto = PROTO_FTP;
			else if (strcmp(*argv, "xmpp") == 0)
				starttls_proto = PROTO_XMPP;
			else
				goto bad;
		}
#ifndef OPENSSL_NO_ENGINE
		else if (strcmp(*argv, "-engine") == 0) {
			if (--argc < 1)
				goto bad;
			engine_id = *(++argv);
		} else if (strcmp(*argv, "-ssl_client_engine") == 0) {
			if (--argc < 1)
				goto bad;
			ssl_client_engine_id = *(++argv);
		}
#endif
		else if (strcmp(*argv, "-4") == 0) {
			af = AF_INET;
		} else if (strcmp(*argv, "-6") == 0) {
			af = AF_INET6;
		}
#ifndef OPENSSL_NO_TLSEXT
		else if (strcmp(*argv, "-servername") == 0) {
			if (--argc < 1)
				goto bad;
			servername = *(++argv);
			/* meth=TLSv1_client_method(); */
		}
#endif
#ifndef OPENSSL_NO_SRTP
		else if (strcmp(*argv, "-use_srtp") == 0) {
			if (--argc < 1)
				goto bad;
			srtp_profiles = *(++argv);
		}
#endif
		else if (strcmp(*argv, "-keymatexport") == 0) {
			if (--argc < 1)
				goto bad;
			keymatexportlabel = *(++argv);
		} else if (strcmp(*argv, "-keymatexportlen") == 0) {
			const char *errstr;

			if (--argc < 1)
				goto bad;
			keymatexportlen = strtonum(*(++argv), 1, INT_MAX, &errstr);
			if (errstr)
				goto bad;
		} else {
			BIO_printf(bio_err, "unknown option %s\n", *argv);
			badop = 1;
			break;
		}
		argc--;
		argv++;
	}
	if (badop) {
bad:
		if (errstr)
			BIO_printf(bio_err, "invalid argument %s: %s\n",
			    *argv, errstr);
		else
			sc_usage();
		goto end;
	}

#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
	next_proto.status = -1;
	if (next_proto_neg_in) {
		next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
		if (next_proto.data == NULL) {
			BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
			goto end;
		}
	} else
		next_proto.data = NULL;
#endif

#ifndef OPENSSL_NO_ENGINE
	e = setup_engine(bio_err, engine_id, 1);
	if (ssl_client_engine_id) {
		ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
		if (!ssl_client_engine) {
			BIO_printf(bio_err,
			    "Error getting client auth engine\n");
			goto end;
		}
	}
#endif
	if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
		BIO_printf(bio_err, "Error getting password\n");
		goto end;
	}
	if (key_file == NULL)
		key_file = cert_file;


	if (key_file) {

		key = load_key(bio_err, key_file, key_format, 0, pass, e,
		    "client certificate private key file");
		if (!key) {
			ERR_print_errors(bio_err);
			goto end;
		}
	}
	if (cert_file) {
		cert = load_cert(bio_err, cert_file, cert_format,
		    NULL, e, "client certificate file");

		if (!cert) {
			ERR_print_errors(bio_err);
			goto end;
		}
	}
	if (bio_c_out == NULL) {
		if (c_quiet && !c_debug && !c_msg) {
			bio_c_out = BIO_new(BIO_s_null());
		} else {
			if (bio_c_out == NULL)
				bio_c_out = BIO_new_fp(stdout, BIO_NOCLOSE);
		}
	}

	ctx = SSL_CTX_new(meth);
	if (ctx == NULL) {
		ERR_print_errors(bio_err);
		goto end;
	}
	if (vpm)
		SSL_CTX_set1_param(ctx, vpm);

#ifndef OPENSSL_NO_ENGINE
	if (ssl_client_engine) {
		if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine)) {
			BIO_puts(bio_err, "Error setting client auth engine\n");
			ERR_print_errors(bio_err);
			ENGINE_free(ssl_client_engine);
			goto end;
		}
		ENGINE_free(ssl_client_engine);
	}
#endif

#ifndef OPENSSL_NO_SRTP
	if (srtp_profiles != NULL)
		SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
#endif
	if (bugs)
		SSL_CTX_set_options(ctx, SSL_OP_ALL | off);
	else
		SSL_CTX_set_options(ctx, off);

	if (clr)
		SSL_CTX_clear_options(ctx, clr);
	/*
	 * DTLS: partial reads end up discarding unread UDP bytes :-( Setting
	 * read ahead solves this problem.
	 */
	if (socket_type == SOCK_DGRAM)
		SSL_CTX_set_read_ahead(ctx, 1);

#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
	if (next_proto.data)
		SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
#endif

	if (state)
		SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
	if (cipher != NULL)
		if (!SSL_CTX_set_cipher_list(ctx, cipher)) {
			BIO_printf(bio_err, "error setting cipher list\n");
			ERR_print_errors(bio_err);
			goto end;
		}

	SSL_CTX_set_verify(ctx, verify, verify_callback);
	if (!set_cert_key_stuff(ctx, cert, key))
		goto end;

	if ((!SSL_CTX_load_verify_locations(ctx, CAfile, CApath)) ||
	    (!SSL_CTX_set_default_verify_paths(ctx))) {
		/*
		 * BIO_printf(bio_err,"error setting default verify
		 * locations\n");
		 */
		ERR_print_errors(bio_err);
		/* goto end; */
	}
#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL) {
		tlsextcbp.biodebug = bio_err;
		SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
		SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
	}
#endif

	con = SSL_new(ctx);
	if (sess_in) {
		SSL_SESSION *sess;
		BIO *stmp = BIO_new_file(sess_in, "r");
		if (!stmp) {
			BIO_printf(bio_err, "Can't open session file %s\n",
			    sess_in);
			ERR_print_errors(bio_err);
			goto end;
		}
		sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
		BIO_free(stmp);
		if (!sess) {
			BIO_printf(bio_err, "Can't open session file %s\n",
			    sess_in);
			ERR_print_errors(bio_err);
			goto end;
		}
		SSL_set_session(con, sess);
		SSL_SESSION_free(sess);
	}
#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL) {
		if (!SSL_set_tlsext_host_name(con, servername)) {
			BIO_printf(bio_err, "Unable to set TLS servername extension.\n");
			ERR_print_errors(bio_err);
			goto end;
		}
	}
#endif
/*	SSL_set_cipher_list(con,"RC4-MD5"); */

re_start:

	if (init_client(&s, host, port, socket_type, af) == 0) {
		BIO_printf(bio_err, "connect:errno=%d\n", errno);
		shutdown(s, SHUT_RD);
		close(s);
		goto end;
	}
	BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s);

	if (c_nbio) {
		unsigned long l = 1;
		BIO_printf(bio_c_out, "turning on non blocking io\n");
		if (BIO_socket_ioctl(s, FIONBIO, &l) < 0) {
			ERR_print_errors(bio_err);
			goto end;
		}
	}
	if (c_Pause & 0x01)
		SSL_set_debug(con, 1);

	if (SSL_version(con) == DTLS1_VERSION) {

		sbio = BIO_new_dgram(s, BIO_NOCLOSE);
		if (getsockname(s, &peer, (void *) &peerlen) < 0) {
			BIO_printf(bio_err, "getsockname:errno=%d\n",
			    errno);
			shutdown(s, SHUT_RD);
			close(s);
			goto end;
		}
		(void) BIO_ctrl_set_connected(sbio, 1, &peer);

		if (enable_timeouts) {
			timeout.tv_sec = 0;
			timeout.tv_usec = DGRAM_RCV_TIMEOUT;
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);

			timeout.tv_sec = 0;
			timeout.tv_usec = DGRAM_SND_TIMEOUT;
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
		}
		if (socket_mtu > 28) {
			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
			SSL_set_mtu(con, socket_mtu - 28);
		} else
			/* want to do MTU discovery */
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
	} else
		sbio = BIO_new_socket(s, BIO_NOCLOSE);

	if (nbio_test) {
		BIO *test;

		test = BIO_new(BIO_f_nbio_test());
		sbio = BIO_push(test, sbio);
	}
	if (c_debug) {
		SSL_set_debug(con, 1);
		BIO_set_callback(sbio, bio_dump_callback);
		BIO_set_callback_arg(sbio, (char *) bio_c_out);
	}
	if (c_msg) {
		SSL_set_msg_callback(con, msg_cb);
		SSL_set_msg_callback_arg(con, bio_c_out);
	}
#ifndef OPENSSL_NO_TLSEXT
	if (c_tlsextdebug) {
		SSL_set_tlsext_debug_callback(con, tlsext_cb);
		SSL_set_tlsext_debug_arg(con, bio_c_out);
	}
	if (c_status_req) {
		SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
		SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
		SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
	}
#endif

	SSL_set_bio(con, sbio, sbio);
	SSL_set_connect_state(con);

	/* ok, lets connect */
	width = SSL_get_fd(con) + 1;

	read_tty = 1;
	write_tty = 0;
	tty_on = 0;
	read_ssl = 1;
	write_ssl = 1;

	cbuf_len = 0;
	cbuf_off = 0;
	sbuf_len = 0;
	sbuf_off = 0;

	/* This is an ugly hack that does a lot of assumptions */
	/*
	 * We do have to handle multi-line responses which may come in a
	 * single packet or not. We therefore have to use BIO_gets() which
	 * does need a buffering BIO. So during the initial chitchat we do
	 * push a buffering BIO into the chain that is removed again later on
	 * to not disturb the rest of the s_client operation.
	 */
	if (starttls_proto == PROTO_SMTP || starttls_proto == PROTO_LMTP) {
		int foundit = 0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from SMTP */
		do {
			mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
		}
		while (mbuf_len > 3 && mbuf[3] == '-');
		/* STARTTLS command requires EHLO... */
		BIO_printf(fbio, "%cHLO openssl.client.net\r\n",
			   starttls_proto == PROTO_SMTP ? 'E' : 'L');
		(void) BIO_flush(fbio);
		/* wait for multi-line response to end EHLO SMTP response */
		do {
			mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
			if (strstr(mbuf, "STARTTLS"))
				foundit = 1;
		}
		while (mbuf_len > 3 && mbuf[3] == '-');
		(void) BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
			    "didn't found starttls in server response,"
			    " try anyway...\n");
		BIO_printf(sbio, "STARTTLS\r\n");
		BIO_read(sbio, sbuf, BUFSIZZ);
	} else if (starttls_proto == PROTO_POP3) {
		mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
		if (mbuf_len == -1) {
			BIO_printf(bio_err, "BIO_read failed\n");
			goto end;
		}
		BIO_printf(sbio, "STLS\r\n");
		BIO_read(sbio, sbuf, BUFSIZZ);
	} else if (starttls_proto == PROTO_IMAP) {
		int foundit = 0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		BIO_gets(fbio, mbuf, BUFSIZZ);
		/* STARTTLS command requires CAPABILITY... */
		BIO_printf(fbio, ". CAPABILITY\r\n");
		(void) BIO_flush(fbio);
		/* wait for multi-line CAPABILITY response */
		do {
			mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
			if (strstr(mbuf, "STARTTLS"))
				foundit = 1;
		}
		while (mbuf_len > 3 && mbuf[0] != '.');
		(void) BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
			    "didn't found STARTTLS in server response,"
			    " try anyway...\n");
		BIO_printf(sbio, ". STARTTLS\r\n");
		BIO_read(sbio, sbuf, BUFSIZZ);
	} else if (starttls_proto == PROTO_FTP) {
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from FTP */
		do {
			mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
		}
		while (mbuf_len > 3 && mbuf[3] == '-');
		(void) BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		BIO_printf(sbio, "AUTH TLS\r\n");
		BIO_read(sbio, sbuf, BUFSIZZ);
	}
	if (starttls_proto == PROTO_XMPP) {
		int seen = 0;
		BIO_printf(sbio, "<stream:stream "
		    "xmlns:stream='http://etherx.jabber.org/streams' "
		    "xmlns='jabber:client' to='%s' version='1.0'>", host);
		seen = BIO_read(sbio, mbuf, BUFSIZZ);
		mbuf[seen] = 0;
		while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'")) {
			if (strstr(mbuf, "/stream:features>"))
				goto shut;
			seen = BIO_read(sbio, mbuf, BUFSIZZ);
			mbuf[seen] = 0;
		}
		BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
		seen = BIO_read(sbio, sbuf, BUFSIZZ);
		sbuf[seen] = 0;
		if (!strstr(sbuf, "<proceed"))
			goto shut;
		mbuf[0] = 0;
	}
	for (;;) {
		FD_ZERO(&readfds);
		FD_ZERO(&writefds);

		if ((SSL_version(con) == DTLS1_VERSION) &&
		    DTLSv1_get_timeout(con, &timeout))
			timeoutp = &timeout;
		else
			timeoutp = NULL;

		if (SSL_in_init(con) && !SSL_total_renegotiations(con)) {
			in_init = 1;
			tty_on = 0;
		} else {
			tty_on = 1;
			if (in_init) {
				in_init = 0;
				if (sess_out) {
					BIO *stmp = BIO_new_file(sess_out, "w");
					if (stmp) {
						PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
						BIO_free(stmp);
					} else
						BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
				}
				print_stuff(bio_c_out, con, full_log);
				if (full_log > 0)
					full_log--;

				if (starttls_proto) {
					BIO_write(bio_err, mbuf, mbuf_len);
					/* We don't need to know any more */
					starttls_proto = PROTO_OFF;
				}
				if (reconnect) {
					reconnect--;
					BIO_printf(bio_c_out, "drop connection and then reconnect\n");
					SSL_shutdown(con);
					SSL_set_connect_state(con);
					shutdown(SSL_get_fd(con), SHUT_RD);
					close(SSL_get_fd(con));
					goto re_start;
				}
			}
		}

		ssl_pending = read_ssl && SSL_pending(con);

		/* XXX should add tests for fd_set overflow */

		if (!ssl_pending) {
			if (tty_on) {
				if (read_tty)
					FD_SET(fileno(stdin), &readfds);
				if (write_tty)
					FD_SET(fileno(stdout), &writefds);
			}
			if (read_ssl)
				FD_SET(SSL_get_fd(con), &readfds);
			if (write_ssl)
				FD_SET(SSL_get_fd(con), &writefds);
/*			printf("mode tty(%d %d%d) ssl(%d%d)\n",
				tty_on,read_tty,write_tty,read_ssl,write_ssl);*/

			i = select(width, &readfds, &writefds,
			    NULL, timeoutp);
			if (i < 0) {
				BIO_printf(bio_err, "bad select %d\n",
				    errno);
				goto shut;
				/* goto end; */
			}
		}
		if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0) {
			BIO_printf(bio_err, "TIMEOUT occured\n");
		}
		if (!ssl_pending && FD_ISSET(SSL_get_fd(con), &writefds)) {
			k = SSL_write(con, &(cbuf[cbuf_off]),
			    (unsigned int) cbuf_len);
			switch (SSL_get_error(con, k)) {
			case SSL_ERROR_NONE:
				cbuf_off += k;
				cbuf_len -= k;
				if (k <= 0)
					goto end;
				/* we have done a  write(con,NULL,0); */
				if (cbuf_len <= 0) {
					read_tty = 1;
					write_ssl = 0;
				} else {	/* if (cbuf_len > 0) */
					read_tty = 0;
					write_ssl = 1;
				}
				break;
			case SSL_ERROR_WANT_WRITE:
				BIO_printf(bio_c_out, "write W BLOCK\n");
				write_ssl = 1;
				read_tty = 0;
				break;
			case SSL_ERROR_WANT_READ:
				BIO_printf(bio_c_out, "write R BLOCK\n");
				write_tty = 0;
				read_ssl = 1;
				write_ssl = 0;
				break;
			case SSL_ERROR_WANT_X509_LOOKUP:
				BIO_printf(bio_c_out, "write X BLOCK\n");
				break;
			case SSL_ERROR_ZERO_RETURN:
				if (cbuf_len != 0) {
					BIO_printf(bio_c_out, "shutdown\n");
					ret = 0;
					goto shut;
				} else {
					read_tty = 1;
					write_ssl = 0;
					break;
				}

			case SSL_ERROR_SYSCALL:
				if ((k != 0) || (cbuf_len != 0)) {
					BIO_printf(bio_err, "write:errno=%d\n",
					    errno);
					goto shut;
				} else {
					read_tty = 1;
					write_ssl = 0;
				}
				break;
			case SSL_ERROR_SSL:
				ERR_print_errors(bio_err);
				goto shut;
			}
		} else if (!ssl_pending && FD_ISSET(fileno(stdout), &writefds)) {
			i = write(fileno(stdout), &(sbuf[sbuf_off]), sbuf_len);

			if (i <= 0) {
				BIO_printf(bio_c_out, "DONE\n");
				ret = 0;
				goto shut;
				/* goto end; */
			}
			sbuf_len -= i;
			sbuf_off += i;
			if (sbuf_len <= 0) {
				read_ssl = 1;
				write_tty = 0;
			}
		} else if (ssl_pending || FD_ISSET(SSL_get_fd(con), &readfds)) {
#ifdef RENEG
			{
				static int iiii;
				if (++iiii == 52) {
					SSL_renegotiate(con);
					iiii = 0;
				}
			}
#endif
			k = SSL_read(con, sbuf, 1024 /* BUFSIZZ */ );

			switch (SSL_get_error(con, k)) {
			case SSL_ERROR_NONE:
				if (k <= 0)
					goto end;
				sbuf_off = 0;
				sbuf_len = k;

				read_ssl = 0;
				write_tty = 1;
				break;
			case SSL_ERROR_WANT_WRITE:
				BIO_printf(bio_c_out, "read W BLOCK\n");
				write_ssl = 1;
				read_tty = 0;
				break;
			case SSL_ERROR_WANT_READ:
				BIO_printf(bio_c_out, "read R BLOCK\n");
				write_tty = 0;
				read_ssl = 1;
				if ((read_tty == 0) && (write_ssl == 0))
					write_ssl = 1;
				break;
			case SSL_ERROR_WANT_X509_LOOKUP:
				BIO_printf(bio_c_out, "read X BLOCK\n");
				break;
			case SSL_ERROR_SYSCALL:
				ret = errno;
				BIO_printf(bio_err, "read:errno=%d\n", ret);
				goto shut;
			case SSL_ERROR_ZERO_RETURN:
				BIO_printf(bio_c_out, "closed\n");
				ret = 0;
				goto shut;
			case SSL_ERROR_SSL:
				ERR_print_errors(bio_err);
				goto shut;
				/* break; */
			}
		} else if (FD_ISSET(fileno(stdin), &readfds)) {
			if (crlf) {
				int j, lf_num;

				i = read(fileno(stdin), cbuf, BUFSIZZ / 2);
				lf_num = 0;
				/* both loops are skipped when i <= 0 */
				for (j = 0; j < i; j++)
					if (cbuf[j] == '\n')
						lf_num++;
				for (j = i - 1; j >= 0; j--) {
					cbuf[j + lf_num] = cbuf[j];
					if (cbuf[j] == '\n') {
						lf_num--;
						i++;
						cbuf[j + lf_num] = '\r';
					}
				}
				assert(lf_num == 0);
			} else
				i = read(fileno(stdin), cbuf, BUFSIZZ);

			if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q'))) {
				BIO_printf(bio_err, "DONE\n");
				ret = 0;
				goto shut;
			}
			if ((!c_ign_eof) && (cbuf[0] == 'R')) {
				BIO_printf(bio_err, "RENEGOTIATING\n");
				SSL_renegotiate(con);
				cbuf_len = 0;
			} else {
				cbuf_len = i;
				cbuf_off = 0;
			}

			write_ssl = 1;
			read_tty = 0;
		}
	}

	ret = 0;
shut:
	if (in_init)
		print_stuff(bio_c_out, con, full_log);
	SSL_shutdown(con);
	shutdown(SSL_get_fd(con), SHUT_RD);
	close(SSL_get_fd(con));
end:
	if (con != NULL) {
		if (prexit != 0)
			print_stuff(bio_c_out, con, 1);
		SSL_free(con);
	}
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
	free(next_proto.data);
#endif
	if (ctx != NULL)
		SSL_CTX_free(ctx);
	if (cert)
		X509_free(cert);
	if (key)
		EVP_PKEY_free(key);
	free(pass);
	if (vpm)
		X509_VERIFY_PARAM_free(vpm);
	if (cbuf != NULL) {
		OPENSSL_cleanse(cbuf, BUFSIZZ);
		free(cbuf);
	}
	if (sbuf != NULL) {
		OPENSSL_cleanse(sbuf, BUFSIZZ);
		free(sbuf);
	}
	if (mbuf != NULL) {
		OPENSSL_cleanse(mbuf, BUFSIZZ);
		free(mbuf);
	}
	if (bio_c_out != NULL) {
		BIO_free(bio_c_out);
		bio_c_out = NULL;
	}

	return (ret);
}
Ejemplo n.º 3
0
int MAIN(int argc, char **argv)
	{
	int off=0, clr = 0;
	SSL *con=NULL,*con2=NULL;
	X509_STORE *store = NULL;
	int s,k,width,state=0;
	char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
	int cbuf_len,cbuf_off;
	int sbuf_len,sbuf_off;
	fd_set readfds,writefds;
	short port=PORT;
	int full_log=1;
	char *host=SSL_HOST_NAME;
	char *cert_file=NULL,*key_file=NULL;
	int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
	char *passarg = NULL, *pass = NULL;
	X509 *cert = NULL;
	EVP_PKEY *key = NULL;
	char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
	int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
	int cutthrough=0;
	int crlf=0;
	int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
	SSL_CTX *ctx=NULL;
	int ret=1,in_init=1,i,nbio_test=0;
	int starttls_proto = PROTO_OFF;
	int prexit = 0, vflags = 0;
	SSL_METHOD *meth=NULL;
#ifdef sock_type
#undef sock_type
#endif
	int sock_type=SOCK_STREAM;
	BIO *sbio;
	char *inrand=NULL;
	int mbuf_len=0;
	struct timeval timeout, *timeoutp;
#ifndef OPENSSL_NO_ENGINE
	char *engine_id=NULL;
	char *ssl_client_engine_id=NULL;
	ENGINE *ssl_client_engine=NULL;
#endif
	ENGINE *e=NULL;
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
	struct timeval tv;
#endif

#ifndef OPENSSL_NO_TLSEXT
	char *servername = NULL; 
        tlsextctx tlsextcbp = 
        {NULL,0};
#endif
	char *sess_in = NULL;
	char *sess_out = NULL;
	struct sockaddr peer;
	int peerlen = sizeof(peer);
	int enable_timeouts = 0 ;
	long socket_mtu = 0;
#ifndef OPENSSL_NO_JPAKE
	char *jpake_secret = NULL;
#endif

#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
	meth=SSLv23_client_method();
#elif !defined(OPENSSL_NO_SSL3)
	meth=SSLv3_client_method();
#elif !defined(OPENSSL_NO_SSL2)
	meth=SSLv2_client_method();
#endif

	apps_startup();
	c_Pause=0;
	c_quiet=0;
	c_ign_eof=0;
	c_debug=0;
	c_msg=0;
	c_showcerts=0;

	if (bio_err == NULL)
		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

	if (!load_config(bio_err, NULL))
		goto end;

	if (	((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
		((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
		((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
		{
		BIO_printf(bio_err,"out of memory\n");
		goto end;
		}

	verify_depth=0;
	verify_error=X509_V_OK;
#ifdef FIONBIO
	c_nbio=0;
#endif

	argc--;
	argv++;
	while (argc >= 1)
		{
		if	(strcmp(*argv,"-host") == 0)
			{
			if (--argc < 1) goto bad;
			host= *(++argv);
			}
		else if	(strcmp(*argv,"-port") == 0)
			{
			if (--argc < 1) goto bad;
			port=atoi(*(++argv));
			if (port == 0) goto bad;
			}
		else if (strcmp(*argv,"-connect") == 0)
			{
			if (--argc < 1) goto bad;
			if (!extract_host_port(*(++argv),&host,NULL,&port))
				goto bad;
			}
		else if	(strcmp(*argv,"-verify") == 0)
			{
			verify=SSL_VERIFY_PEER;
			if (--argc < 1) goto bad;
			verify_depth=atoi(*(++argv));
			BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
			}
		else if	(strcmp(*argv,"-cert") == 0)
			{
			if (--argc < 1) goto bad;
			cert_file= *(++argv);
			}
		else if	(strcmp(*argv,"-sess_out") == 0)
			{
			if (--argc < 1) goto bad;
			sess_out = *(++argv);
			}
		else if	(strcmp(*argv,"-sess_in") == 0)
			{
			if (--argc < 1) goto bad;
			sess_in = *(++argv);
			}
		else if	(strcmp(*argv,"-certform") == 0)
			{
			if (--argc < 1) goto bad;
			cert_format = str2fmt(*(++argv));
			}
		else if	(strcmp(*argv,"-crl_check") == 0)
			vflags |= X509_V_FLAG_CRL_CHECK;
		else if	(strcmp(*argv,"-crl_check_all") == 0)
			vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
		else if	(strcmp(*argv,"-prexit") == 0)
			prexit=1;
		else if	(strcmp(*argv,"-crlf") == 0)
			crlf=1;
		else if	(strcmp(*argv,"-quiet") == 0)
			{
			c_quiet=1;
			c_ign_eof=1;
			}
		else if	(strcmp(*argv,"-ign_eof") == 0)
			c_ign_eof=1;
		else if	(strcmp(*argv,"-no_ign_eof") == 0)
			c_ign_eof=0;
		else if	(strcmp(*argv,"-pause") == 0)
			c_Pause=1;
		else if	(strcmp(*argv,"-debug") == 0)
			c_debug=1;
#ifndef OPENSSL_NO_TLSEXT
		else if	(strcmp(*argv,"-tlsextdebug") == 0)
			c_tlsextdebug=1;
		else if	(strcmp(*argv,"-status") == 0)
			c_status_req=1;
#endif
#ifdef WATT32
		else if (strcmp(*argv,"-wdebug") == 0)
			dbug_init();
#endif
		else if	(strcmp(*argv,"-msg") == 0)
			c_msg=1;
		else if	(strcmp(*argv,"-showcerts") == 0)
			c_showcerts=1;
		else if	(strcmp(*argv,"-nbio_test") == 0)
			nbio_test=1;
		else if	(strcmp(*argv,"-state") == 0)
			state=1;
#ifndef OPENSSL_NO_SSL2
		else if	(strcmp(*argv,"-ssl2") == 0)
			meth=SSLv2_client_method();
#endif
#ifndef OPENSSL_NO_SSL3
		else if	(strcmp(*argv,"-ssl3") == 0)
			meth=SSLv3_client_method();
#endif
#ifndef OPENSSL_NO_TLS1
		else if	(strcmp(*argv,"-tls1") == 0)
			meth=TLSv1_client_method();
#endif
#ifndef OPENSSL_NO_DTLS1
		else if	(strcmp(*argv,"-dtls1") == 0)
			{
			meth=DTLSv1_client_method();
			sock_type=SOCK_DGRAM;
			}
		else if (strcmp(*argv,"-timeout") == 0)
			enable_timeouts=1;
		else if (strcmp(*argv,"-mtu") == 0)
			{
			if (--argc < 1) goto bad;
			socket_mtu = atol(*(++argv));
			}
#endif
		else if (strcmp(*argv,"-bugs") == 0)
			bugs=1;
		else if	(strcmp(*argv,"-keyform") == 0)
			{
			if (--argc < 1) goto bad;
			key_format = str2fmt(*(++argv));
			}
		else if	(strcmp(*argv,"-pass") == 0)
			{
			if (--argc < 1) goto bad;
			passarg = *(++argv);
			}
		else if	(strcmp(*argv,"-key") == 0)
			{
			if (--argc < 1) goto bad;
			key_file= *(++argv);
			}
		else if	(strcmp(*argv,"-reconnect") == 0)
			{
			reconnect=5;
			}
		else if	(strcmp(*argv,"-CApath") == 0)
			{
			if (--argc < 1) goto bad;
			CApath= *(++argv);
			}
		else if	(strcmp(*argv,"-CAfile") == 0)
			{
			if (--argc < 1) goto bad;
			CAfile= *(++argv);
			}
		else if (strcmp(*argv,"-no_tls1") == 0)
			off|=SSL_OP_NO_TLSv1;
		else if (strcmp(*argv,"-no_ssl3") == 0)
			off|=SSL_OP_NO_SSLv3;
		else if (strcmp(*argv,"-no_ssl2") == 0)
			off|=SSL_OP_NO_SSLv2;
#ifndef OPENSSL_NO_TLSEXT
		else if	(strcmp(*argv,"-no_ticket") == 0)
			{ off|=SSL_OP_NO_TICKET; }
#endif
		else if (strcmp(*argv,"-cutthrough") == 0)
			cutthrough=1;
		else if (strcmp(*argv,"-serverpref") == 0)
			off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
		else if (strcmp(*argv,"-legacy_renegotiation") == 0)
			off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
		else if	(strcmp(*argv,"-legacy_server_connect") == 0)
			{ off|=SSL_OP_LEGACY_SERVER_CONNECT; }
		else if	(strcmp(*argv,"-no_legacy_server_connect") == 0)
			{ clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
		else if	(strcmp(*argv,"-cipher") == 0)
			{
			if (--argc < 1) goto bad;
			cipher= *(++argv);
			}
#ifdef FIONBIO
		else if (strcmp(*argv,"-nbio") == 0)
			{ c_nbio=1; }
#endif
		else if	(strcmp(*argv,"-starttls") == 0)
			{
			if (--argc < 1) goto bad;
			++argv;
			if (strcmp(*argv,"smtp") == 0)
				starttls_proto = PROTO_SMTP;
			else if (strcmp(*argv,"pop3") == 0)
				starttls_proto = PROTO_POP3;
			else if (strcmp(*argv,"imap") == 0)
				starttls_proto = PROTO_IMAP;
			else if (strcmp(*argv,"ftp") == 0)
				starttls_proto = PROTO_FTP;
			else if (strcmp(*argv, "xmpp") == 0)
				starttls_proto = PROTO_XMPP;
			else
				goto bad;
			}
#ifndef OPENSSL_NO_ENGINE
		else if	(strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine_id = *(++argv);
			}
		else if	(strcmp(*argv,"-ssl_client_engine") == 0)
			{
			if (--argc < 1) goto bad;
			ssl_client_engine_id = *(++argv);
			}
#endif
		else if (strcmp(*argv,"-rand") == 0)
			{
			if (--argc < 1) goto bad;
			inrand= *(++argv);
			}
#ifndef OPENSSL_NO_TLSEXT
		else if (strcmp(*argv,"-servername") == 0)
			{
			if (--argc < 1) goto bad;
			servername= *(++argv);
			/* meth=TLSv1_client_method(); */
			}
#endif
#ifndef OPENSSL_NO_JPAKE
		else if (strcmp(*argv,"-jpake") == 0)
			{
			if (--argc < 1) goto bad;
			jpake_secret = *++argv;
			}
#endif
		else
			{
			BIO_printf(bio_err,"unknown option %s\n",*argv);
			badop=1;
			break;
			}
		argc--;
		argv++;
		}
	if (badop)
		{
bad:
		sc_usage();
		goto end;
		}

	OpenSSL_add_ssl_algorithms();
	SSL_load_error_strings();

#ifndef OPENSSL_NO_ENGINE
        e = setup_engine(bio_err, engine_id, 1);
	if (ssl_client_engine_id)
		{
		ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
		if (!ssl_client_engine)
			{
			BIO_printf(bio_err,
					"Error getting client auth engine\n");
			goto end;
			}
		}
#endif
	if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
		{
		BIO_printf(bio_err, "Error getting password\n");
		goto end;
		}

	if (key_file == NULL)
		key_file = cert_file;


	if (key_file)

		{

		key = load_key(bio_err, key_file, key_format, 0, pass, e,
			       "client certificate private key file");
		if (!key)
			{
			ERR_print_errors(bio_err);
			goto end;
			}

		}

	if (cert_file)

		{
		cert = load_cert(bio_err,cert_file,cert_format,
				NULL, e, "client certificate file");

		if (!cert)
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		}

	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
		&& !RAND_status())
		{
		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
		}
	if (inrand != NULL)
		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
			app_RAND_load_files(inrand));

	if (bio_c_out == NULL)
		{
		if (c_quiet && !c_debug && !c_msg)
			{
			bio_c_out=BIO_new(BIO_s_null());
			}
		else
			{
			if (bio_c_out == NULL)
				bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
			}
		}

	ctx=SSL_CTX_new(meth);
	if (ctx == NULL)
		{
		ERR_print_errors(bio_err);
		goto end;
		}

#ifndef OPENSSL_NO_ENGINE
	if (ssl_client_engine)
		{
		if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
			{
			BIO_puts(bio_err, "Error setting client auth engine\n");
			ERR_print_errors(bio_err);
			ENGINE_free(ssl_client_engine);
			goto end;
			}
		ENGINE_free(ssl_client_engine);
		}
#endif

	if (bugs)
		SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
	else
		SSL_CTX_set_options(ctx,off);

	if (clr)
		SSL_CTX_clear_options(ctx, clr);
	/* DTLS: partial reads end up discarding unread UDP bytes :-( 
	 * Setting read ahead solves this problem.
	 */
	if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);

	/* Enable handshake cutthrough for client connections using
	 * strong ciphers. */
	if (cutthrough)
		{
		int ssl_mode = SSL_CTX_get_mode(ctx);
		ssl_mode |= SSL_MODE_HANDSHAKE_CUTTHROUGH;
		SSL_CTX_set_mode(ctx, ssl_mode);
		}

	if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
	if (cipher != NULL)
		if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
		BIO_printf(bio_err,"error setting cipher list\n");
		ERR_print_errors(bio_err);
		goto end;
	}
#if 0
	else
		SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
#endif

	SSL_CTX_set_verify(ctx,verify,verify_callback);
	if (!set_cert_key_stuff(ctx,cert,key))
		goto end;

	if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
		(!SSL_CTX_set_default_verify_paths(ctx)))
		{
		/* BIO_printf(bio_err,"error setting default verify locations\n"); */
		ERR_print_errors(bio_err);
		/* goto end; */
		}

	store = SSL_CTX_get_cert_store(ctx);
	X509_STORE_set_flags(store, vflags);
#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL)
		{
		tlsextcbp.biodebug = bio_err;
		SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
		SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
		}
#endif

	con=SSL_new(ctx);
	if (sess_in)
		{
		SSL_SESSION *sess;
		BIO *stmp = BIO_new_file(sess_in, "r");
		if (!stmp)
			{
			BIO_printf(bio_err, "Can't open session file %s\n",
						sess_in);
			ERR_print_errors(bio_err);
			goto end;
			}
		sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
		BIO_free(stmp);
		if (!sess)
			{
			BIO_printf(bio_err, "Can't open session file %s\n",
						sess_in);
			ERR_print_errors(bio_err);
			goto end;
			}
		SSL_set_session(con, sess);
		SSL_SESSION_free(sess);
		}
#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL)
		{
		if (!SSL_set_tlsext_host_name(con,servername))
			{
			BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
			ERR_print_errors(bio_err);
			goto end;
			}
		}
#endif

#ifndef OPENSSL_NO_KRB5
	if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
                {
                kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
		}
#endif	/* OPENSSL_NO_KRB5  */
/*	SSL_set_cipher_list(con,"RC4-MD5"); */

re_start:

	if (init_client(&s,host,port,sock_type) == 0)
		{
		BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
		SHUTDOWN(s);
		goto end;
		}
	BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);

#ifdef FIONBIO
	if (c_nbio)
		{
		unsigned long l=1;
		BIO_printf(bio_c_out,"turning on non blocking io\n");
		if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		}
#endif                                              
	if (c_Pause & 0x01) con->debug=1;

	if ( SSL_version(con) == DTLS1_VERSION)
		{

		sbio=BIO_new_dgram(s,BIO_NOCLOSE);
		if (getsockname(s, &peer, (void *)&peerlen) < 0)
			{
			BIO_printf(bio_err, "getsockname:errno=%d\n",
				get_last_socket_error());
			SHUTDOWN(s);
			goto end;
			}

		(void)BIO_ctrl_set_connected(sbio, 1, &peer);

		if ( enable_timeouts)
			{
			timeout.tv_sec = 0;
			timeout.tv_usec = DGRAM_RCV_TIMEOUT;
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
			
			timeout.tv_sec = 0;
			timeout.tv_usec = DGRAM_SND_TIMEOUT;
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
			}

		if (socket_mtu > 28)
			{
			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
			SSL_set_mtu(con, socket_mtu - 28);
			}
		else
			/* want to do MTU discovery */
			BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
		}
	else
		sbio=BIO_new_socket(s,BIO_NOCLOSE);

	if (nbio_test)
		{
		BIO *test;

		test=BIO_new(BIO_f_nbio_test());
		sbio=BIO_push(test,sbio);
		}

	if (c_debug)
		{
		con->debug=1;
		BIO_set_callback(sbio,bio_dump_callback);
		BIO_set_callback_arg(sbio,(char *)bio_c_out);
		}
	if (c_msg)
		{
		SSL_set_msg_callback(con, msg_cb);
		SSL_set_msg_callback_arg(con, bio_c_out);
		}
#ifndef OPENSSL_NO_TLSEXT
	if (c_tlsextdebug)
		{
		SSL_set_tlsext_debug_callback(con, tlsext_cb);
		SSL_set_tlsext_debug_arg(con, bio_c_out);
		}
	if (c_status_req)
		{
		SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
		SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
		SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
#if 0
{
STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
OCSP_RESPID *id = OCSP_RESPID_new();
id->value.byKey = ASN1_OCTET_STRING_new();
id->type = V_OCSP_RESPID_KEY;
ASN1_STRING_set(id->value.byKey, "Hello World", -1);
sk_OCSP_RESPID_push(ids, id);
SSL_set_tlsext_status_ids(con, ids);
}
#endif
		}
#endif
#ifndef OPENSSL_NO_JPAKE
	if (jpake_secret)
		jpake_client_auth(bio_c_out, sbio, jpake_secret);
#endif

	SSL_set_bio(con,sbio,sbio);
	SSL_set_connect_state(con);

	/* ok, lets connect */
	width=SSL_get_fd(con)+1;

	read_tty=1;
	write_tty=0;
	tty_on=0;
	read_ssl=1;
	write_ssl=1;
	
	cbuf_len=0;
	cbuf_off=0;
	sbuf_len=0;
	sbuf_off=0;

	/* This is an ugly hack that does a lot of assumptions */
	/* We do have to handle multi-line responses which may come
 	   in a single packet or not. We therefore have to use
	   BIO_gets() which does need a buffering BIO. So during
	   the initial chitchat we do push a buffering BIO into the
	   chain that is removed again later on to not disturb the
	   rest of the s_client operation. */
	if (starttls_proto == PROTO_SMTP)
		{
		int foundit=0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from SMTP */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		/* STARTTLS command requires EHLO... */
		BIO_printf(fbio,"EHLO openssl.client.net\r\n");
		(void)BIO_flush(fbio);
		/* wait for multi-line response to end EHLO SMTP response */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			if (strstr(mbuf,"STARTTLS"))
				foundit=1;
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
				   "didn't found starttls in server response,"
				   " try anyway...\n");
		BIO_printf(sbio,"STARTTLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_POP3)
		{
		BIO_read(sbio,mbuf,BUFSIZZ);
		BIO_printf(sbio,"STLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_IMAP)
		{
		int foundit=0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		BIO_gets(fbio,mbuf,BUFSIZZ);
		/* STARTTLS command requires CAPABILITY... */
		BIO_printf(fbio,". CAPABILITY\r\n");
		(void)BIO_flush(fbio);
		/* wait for multi-line CAPABILITY response */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			if (strstr(mbuf,"STARTTLS"))
				foundit=1;
			}
		while (mbuf_len>3 && mbuf[0]!='.');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
				   "didn't found STARTTLS in server response,"
				   " try anyway...\n");
		BIO_printf(sbio,". STARTTLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_FTP)
		{
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from FTP */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		BIO_printf(sbio,"AUTH TLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	if (starttls_proto == PROTO_XMPP)
		{
		int seen = 0;
		BIO_printf(sbio,"<stream:stream "
		    "xmlns:stream='http://etherx.jabber.org/streams' "
		    "xmlns='jabber:client' to='%s' version='1.0'>", host);
		seen = BIO_read(sbio,mbuf,BUFSIZZ);
		mbuf[seen] = 0;
		while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
			{
			if (strstr(mbuf, "/stream:features>"))
				goto shut;
			seen = BIO_read(sbio,mbuf,BUFSIZZ);
			mbuf[seen] = 0;
			}
		BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
		seen = BIO_read(sbio,sbuf,BUFSIZZ);
		sbuf[seen] = 0;
		if (!strstr(sbuf, "<proceed"))
			goto shut;
		mbuf[0] = 0;
		}

	for (;;)
		{
		FD_ZERO(&readfds);
		FD_ZERO(&writefds);

		if ((SSL_version(con) == DTLS1_VERSION) &&
			DTLSv1_get_timeout(con, &timeout))
			timeoutp = &timeout;
		else
			timeoutp = NULL;

		if (SSL_in_init(con) && !SSL_total_renegotiations(con))
			{
			in_init=1;
			tty_on=0;
			}
		else
			{
			tty_on=1;
			if (in_init)
				{
				in_init=0;
				if (sess_out)
					{
					BIO *stmp = BIO_new_file(sess_out, "w");
					if (stmp)
						{
						PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
						BIO_free(stmp);
						}
					else 
						BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
					}
				print_stuff(bio_c_out,con,full_log);
				if (full_log > 0) full_log--;

				if (starttls_proto)
					{
					BIO_printf(bio_err,"%s",mbuf);
					/* We don't need to know any more */
					starttls_proto = PROTO_OFF;
					}

				if (reconnect)
					{
					reconnect--;
					BIO_printf(bio_c_out,"drop connection and then reconnect\n");
					SSL_shutdown(con);
					SSL_set_connect_state(con);
					SHUTDOWN(SSL_get_fd(con));
					goto re_start;
					}
				}
			}

		ssl_pending = read_ssl && SSL_pending(con);

		if (!ssl_pending)
			{
#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
			if (tty_on)
				{
				if (read_tty)  FD_SET(fileno(stdin),&readfds);
				if (write_tty) FD_SET(fileno(stdout),&writefds);
				}
			if (read_ssl)
				FD_SET(SSL_get_fd(con),&readfds);
			if (write_ssl)
				FD_SET(SSL_get_fd(con),&writefds);
#else
			if(!tty_on || !write_tty) {
				if (read_ssl)
					FD_SET(SSL_get_fd(con),&readfds);
				if (write_ssl)
					FD_SET(SSL_get_fd(con),&writefds);
			}
#endif
/*			printf("mode tty(%d %d%d) ssl(%d%d)\n",
				tty_on,read_tty,write_tty,read_ssl,write_ssl);*/

			/* Note: under VMS with SOCKETSHR the second parameter
			 * is currently of type (int *) whereas under other
			 * systems it is (void *) if you don't have a cast it
			 * will choke the compiler: if you do have a cast then
			 * you can either go for (int *) or (void *).
			 */
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
                        /* Under Windows/DOS we make the assumption that we can
			 * always write to the tty: therefore if we need to
			 * write to the tty we just fall through. Otherwise
			 * we timeout the select every second and see if there
			 * are any keypresses. Note: this is a hack, in a proper
			 * Windows application we wouldn't do this.
			 */
			i=0;
			if(!write_tty) {
				if(read_tty) {
					tv.tv_sec = 1;
					tv.tv_usec = 0;
					i=select(width,(void *)&readfds,(void *)&writefds,
						 NULL,&tv);
#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
					if(!i && (!_kbhit() || !read_tty) ) continue;
#else
					if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
#endif
				} else 	i=select(width,(void *)&readfds,(void *)&writefds,
					 NULL,timeoutp);
			}
#elif defined(OPENSSL_SYS_NETWARE)
			if(!write_tty) {
				if(read_tty) {
					tv.tv_sec = 1;
					tv.tv_usec = 0;
					i=select(width,(void *)&readfds,(void *)&writefds,
						NULL,&tv);
				} else 	i=select(width,(void *)&readfds,(void *)&writefds,
					NULL,timeoutp);
			}
#else
			i=select(width,(void *)&readfds,(void *)&writefds,
				 NULL,timeoutp);
#endif
			if ( i < 0)
				{
				BIO_printf(bio_err,"bad select %d\n",
				get_last_socket_error());
				goto shut;
				/* goto end; */
				}
			}

		if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
			{
			BIO_printf(bio_err,"TIMEOUT occured\n");
			}

		if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
			{
			k=SSL_write(con,&(cbuf[cbuf_off]),
				(unsigned int)cbuf_len);
			switch (SSL_get_error(con,k))
				{
			case SSL_ERROR_NONE:
				cbuf_off+=k;
				cbuf_len-=k;
				if (k <= 0) goto end;
				/* we have done a  write(con,NULL,0); */
				if (cbuf_len <= 0)
					{
					read_tty=1;
					write_ssl=0;
					}
				else /* if (cbuf_len > 0) */
					{
					read_tty=0;
					write_ssl=1;
					}
				break;
			case SSL_ERROR_WANT_WRITE:
				BIO_printf(bio_c_out,"write W BLOCK\n");
				write_ssl=1;
				read_tty=0;
				break;
			case SSL_ERROR_WANT_READ:
				BIO_printf(bio_c_out,"write R BLOCK\n");
				write_tty=0;
				read_ssl=1;
				write_ssl=0;
				break;
			case SSL_ERROR_WANT_X509_LOOKUP:
				BIO_printf(bio_c_out,"write X BLOCK\n");
				break;
			case SSL_ERROR_ZERO_RETURN:
				if (cbuf_len != 0)
					{
					BIO_printf(bio_c_out,"shutdown\n");
					goto shut;
					}
				else
					{
					read_tty=1;
					write_ssl=0;
					break;
					}
				
			case SSL_ERROR_SYSCALL:
				if ((k != 0) || (cbuf_len != 0))
					{
					BIO_printf(bio_err,"write:errno=%d\n",
						get_last_socket_error());
					goto shut;
					}
				else
					{
					read_tty=1;
					write_ssl=0;
					}
				break;
			case SSL_ERROR_SSL:
				ERR_print_errors(bio_err);
				goto shut;
				}
			}
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
		/* Assume Windows/DOS can always write */
		else if (!ssl_pending && write_tty)
#else
		else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
#endif
			{
#ifdef CHARSET_EBCDIC
			ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
#endif
			i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);

			if (i <= 0)
				{
				BIO_printf(bio_c_out,"DONE\n");
				goto shut;
				/* goto end; */
				}

			sbuf_len-=i;;
			sbuf_off+=i;
			if (sbuf_len <= 0)
				{
				read_ssl=1;
				write_tty=0;
				}
			}
		else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
			{
#ifdef RENEG
{ static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
#endif
#if 1
			k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
#else
/* Demo for pending and peek :-) */
			k=SSL_read(con,sbuf,16);
{ char zbuf[10240]; 
printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
}
#endif

			switch (SSL_get_error(con,k))
				{
			case SSL_ERROR_NONE:
				if (k <= 0)
					goto end;
				sbuf_off=0;
				sbuf_len=k;

				read_ssl=0;
				write_tty=1;
				break;
			case SSL_ERROR_WANT_WRITE:
				BIO_printf(bio_c_out,"read W BLOCK\n");
				write_ssl=1;
				read_tty=0;
				break;
			case SSL_ERROR_WANT_READ:
				BIO_printf(bio_c_out,"read R BLOCK\n");
				write_tty=0;
				read_ssl=1;
				if ((read_tty == 0) && (write_ssl == 0))
					write_ssl=1;
				break;
			case SSL_ERROR_WANT_X509_LOOKUP:
				BIO_printf(bio_c_out,"read X BLOCK\n");
				break;
			case SSL_ERROR_SYSCALL:
				BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
				goto shut;
			case SSL_ERROR_ZERO_RETURN:
				BIO_printf(bio_c_out,"closed\n");
				goto shut;
			case SSL_ERROR_SSL:
				ERR_print_errors(bio_err);
				goto shut;
				/* break; */
				}
			}

#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
		else if (_kbhit())
#else
		else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
#endif
#elif defined (OPENSSL_SYS_NETWARE)
        else if (_kbhit())
#else
		else if (FD_ISSET(fileno(stdin),&readfds))
#endif
			{
			if (crlf)
				{
				int j, lf_num;

				i=read(fileno(stdin),cbuf,BUFSIZZ/2);
				lf_num = 0;
				/* both loops are skipped when i <= 0 */
				for (j = 0; j < i; j++)
					if (cbuf[j] == '\n')
						lf_num++;
				for (j = i-1; j >= 0; j--)
					{
					cbuf[j+lf_num] = cbuf[j];
					if (cbuf[j] == '\n')
						{
						lf_num--;
						i++;
						cbuf[j+lf_num] = '\r';
						}
					}
				assert(lf_num == 0);
				}
			else
				i=read(fileno(stdin),cbuf,BUFSIZZ);

			if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
				{
				BIO_printf(bio_err,"DONE\n");
				goto shut;
				}

			if ((!c_ign_eof) && (cbuf[0] == 'R'))
				{
				BIO_printf(bio_err,"RENEGOTIATING\n");
				SSL_renegotiate(con);
				cbuf_len=0;
				}
			else
				{
				cbuf_len=i;
				cbuf_off=0;
#ifdef CHARSET_EBCDIC
				ebcdic2ascii(cbuf, cbuf, i);
#endif
				}

			write_ssl=1;
			read_tty=0;
			}
		}
shut:
	SSL_shutdown(con);
	SHUTDOWN(SSL_get_fd(con));
	ret=0;
end:
	if(prexit) print_stuff(bio_c_out,con,1);
	if (con != NULL) SSL_free(con);
	if (con2 != NULL) SSL_free(con2);
	if (ctx != NULL) SSL_CTX_free(ctx);
	if (cert)
		X509_free(cert);
	if (key)
		EVP_PKEY_free(key);
	if (pass)
		OPENSSL_free(pass);
	if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
	if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
	if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
	if (bio_c_out != NULL)
		{
		BIO_free(bio_c_out);
		bio_c_out=NULL;
		}
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}
Ejemplo n.º 4
0
BOOL tls_accept(rdpTls* tls, BIO* underlying, rdpSettings* settings)
{
	long options = 0;
	BIO* bio;
	RSA* rsa;
	X509* x509;
	/**
	 * SSL_OP_NO_SSLv2:
	 *
	 * We only want SSLv3 and TLSv1, so disable SSLv2.
	 * SSLv3 is used by, eg. Microsoft RDC for Mac OS X.
	 */
	options |= SSL_OP_NO_SSLv2;
	/**
	 * SSL_OP_NO_COMPRESSION:
	 *
	 * The Microsoft RDP server does not advertise support
	 * for TLS compression, but alternative servers may support it.
	 * This was observed between early versions of the FreeRDP server
	 * and the FreeRDP client, and caused major performance issues,
	 * which is why we're disabling it.
	 */
#ifdef SSL_OP_NO_COMPRESSION
	options |= SSL_OP_NO_COMPRESSION;
#endif
	/**
	 * SSL_OP_TLS_BLOCK_PADDING_BUG:
	 *
	 * The Microsoft RDP server does *not* support TLS padding.
	 * It absolutely needs to be disabled otherwise it won't work.
	 */
	options |= SSL_OP_TLS_BLOCK_PADDING_BUG;
	/**
	 * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS:
	 *
	 * Just like TLS padding, the Microsoft RDP server does not
	 * support empty fragments. This needs to be disabled.
	 */
	options |= SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;

	if (!tls_prepare(tls, underlying, SSLv23_server_method(), options, FALSE))
		return FALSE;

	if (settings->PrivateKeyFile)
	{
		bio = BIO_new_file(settings->PrivateKeyFile, "rb+");

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_file failed for private key %s",
			         settings->PrivateKeyFile);
			return FALSE;
		}
	}
	else if (settings->PrivateKeyContent)
	{
		bio = BIO_new_mem_buf(settings->PrivateKeyContent,
		                      strlen(settings->PrivateKeyContent));

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_mem_buf failed for private key");
			return FALSE;
		}
	}
	else
	{
		WLog_ERR(TAG, "no private key defined");
		return FALSE;
	}

	rsa = PEM_read_bio_RSAPrivateKey(bio, NULL, NULL, NULL);
	BIO_free(bio);

	if (!rsa)
	{
		WLog_ERR(TAG, "invalid private key");
		return FALSE;
	}

	if (SSL_use_RSAPrivateKey(tls->ssl, rsa) <= 0)
	{
		WLog_ERR(TAG, "SSL_CTX_use_RSAPrivateKey_file failed");
		RSA_free(rsa);
		return FALSE;
	}

	if (settings->CertificateFile)
	{
		bio = BIO_new_file(settings->CertificateFile, "rb+");

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_file failed for certificate %s",
			         settings->CertificateFile);
			return FALSE;
		}
	}
	else if (settings->CertificateContent)
	{
		bio = BIO_new_mem_buf(settings->CertificateContent,
		                      strlen(settings->CertificateContent));

		if (!bio)
		{
			WLog_ERR(TAG, "BIO_new_mem_buf failed for certificate");
			return FALSE;
		}
	}
	else
	{
		WLog_ERR(TAG, "no certificate defined");
		return FALSE;
	}

	x509 = PEM_read_bio_X509(bio, NULL, NULL, 0);
	BIO_free(bio);

	if (!x509)
	{
		WLog_ERR(TAG, "invalid certificate");
		return FALSE;
	}

	if (SSL_use_certificate(tls->ssl, x509) <= 0)
	{
		WLog_ERR(TAG, "SSL_use_certificate_file failed");
		X509_free(x509);
		return FALSE;
	}

#ifndef OPENSSL_NO_TLSEXT
	/**
	 * The Microsoft iOS clients eventually send a null or even double null
	 * terminated hostname in the SNI TLS extension!
	 * If the length indicator does not equal the hostname strlen OpenSSL
	 * will abort (see openssl:ssl/t1_lib.c).
	 * Here is a tcpdump segment of Microsoft Remote Desktop Client Version
	 * 8.1.7 running on an iPhone 4 with iOS 7.1.2 showing the transmitted
	 * SNI hostname TLV blob when connection to server "abcd":
	 * 00                  name_type 0x00 (host_name)
	 * 00 06               length_in_bytes 0x0006
	 * 61 62 63 64 00 00   host_name "abcd\0\0"
	 *
	 * Currently the only (runtime) workaround is setting an openssl tls
	 * extension debug callback that sets the SSL context's servername_done
	 * to 1 which effectively disables the parsing of that extension type.
	 */
	SSL_set_tlsext_debug_callback(tls->ssl, tls_openssl_tlsext_debug_callback);
#endif
	return tls_do_handshake(tls, FALSE) > 0;
}