--- /dev/null
+/*
+ * Copyright (C) 2004-2012 Free Software Foundation, Inc.
+ * Copyright (C) 2013 Adam Sampson <ats@offog.org>
+ * Copyright (C) 2013 Nikos Mavrogiannopoulos
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS 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 GnuTLS; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/* Parts copied from GnuTLS example programs. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if defined(_WIN32)
+
+/* socketpair isn't supported on Win32. */
+int
+main (int argc, char** argv)
+{
+ exit (77);
+}
+
+#else
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#if !defined(_WIN32)
+#include <sys/wait.h>
+#endif
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+
+#include "utils.h"
+
+/* A very basic TLS client, with PSK authentication.
+ */
+
+const char* side = "";
+
+static void
+tls_log_func (int level, const char *str)
+{
+ fprintf (stderr, "%s|<%d>| %s", side, level, str);
+}
+
+#define MAX_BUF 1024
+#define MSG "Hello TLS"
+
+static void
+client (int sd)
+{
+ int ret, ii;
+ gnutls_session_t session;
+ gnutls_certificate_credentials_t clientx509cred;
+ char buffer[MAX_BUF + 1];
+ gnutls_psk_client_credentials_t pskcred;
+ /* Need to enable anonymous KX specifically. */
+ const gnutls_datum_t key = { (void *) "DEADBEEF", 8 };
+
+ global_init ();
+ gnutls_global_set_log_function (tls_log_func);
+ if (debug)
+ gnutls_global_set_log_level (4711);
+
+ side = "client";
+
+ gnutls_certificate_allocate_credentials (&clientx509cred);
+
+ gnutls_psk_allocate_client_credentials (&pskcred);
+ gnutls_psk_set_client_credentials (pskcred, "test", &key,
+ GNUTLS_PSK_KEY_HEX);
+
+ /* Initialize TLS session
+ */
+ gnutls_init (&session, GNUTLS_CLIENT);
+
+ /* Use default priorities */
+ gnutls_priority_set_direct (session, "NORMAL:-KX-ALL:+RSA-PSK", NULL);
+
+ /* put the anonymous credentials to the current session
+ */
+ gnutls_credentials_set (session, GNUTLS_CRD_PSK, pskcred);
+ gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, clientx509cred);
+
+ gnutls_transport_set_int (session, sd);
+
+ /* Perform the TLS handshake
+ */
+ ret = gnutls_handshake (session);
+
+ if (ret < 0)
+ {
+ fail ("client: Handshake failed\n");
+ gnutls_perror (ret);
+ goto end;
+ }
+ else
+ {
+ if (debug)
+ success ("client: Handshake was completed\n");
+ }
+
+ gnutls_record_send (session, MSG, strlen (MSG));
+
+ ret = gnutls_record_recv (session, buffer, MAX_BUF);
+ if (ret == 0)
+ {
+ if (debug)
+ success ("client: Peer has closed the TLS connection\n");
+ goto end;
+ }
+ else if (ret < 0)
+ {
+ fail ("client: Error: %s\n", gnutls_strerror (ret));
+ goto end;
+ }
+
+ if (debug)
+ {
+ printf ("- Received %d bytes: ", ret);
+ for (ii = 0; ii < ret; ii++)
+ {
+ fputc (buffer[ii], stdout);
+ }
+ fputs ("\n", stdout);
+ }
+
+ gnutls_bye (session, GNUTLS_SHUT_RDWR);
+
+end:
+
+ close (sd);
+
+ gnutls_deinit (session);
+
+ gnutls_psk_free_client_credentials (pskcred);
+ gnutls_certificate_free_credentials (clientx509cred);
+
+ gnutls_global_deinit ();
+}
+
+/* This is a sample TLS 1.0 echo server, for PSK authentication.
+ */
+
+#define MAX_BUF 1024
+
+static unsigned char server_cert_pem[] =
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
+ "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
+ "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
+ "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
+ "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
+ "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
+ "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
+ "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
+ "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
+ "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
+ "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
+ "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
+ "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
+
+const gnutls_datum_t server_cert = { server_cert_pem,
+ sizeof (server_cert_pem)
+};
+
+static unsigned char server_key_pem[] =
+ "-----BEGIN RSA PRIVATE KEY-----\n"
+ "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
+ "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
+ "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
+ "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
+ "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
+ "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
+ "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
+ "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
+ "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
+ "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
+ "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
+ "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
+ "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
+ "-----END RSA PRIVATE KEY-----\n";
+
+const gnutls_datum_t server_key = { server_key_pem,
+ sizeof (server_key_pem)
+};
+
+/* These are global */
+gnutls_psk_server_credentials_t server_pskcred;
+
+static gnutls_session_t
+initialize_tls_session (void)
+{
+ gnutls_session_t session;
+
+ gnutls_init (&session, GNUTLS_SERVER);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ gnutls_priority_set_direct (session, "NORMAL:-KX-ALL:+RSA-PSK", NULL);
+
+ gnutls_credentials_set (session, GNUTLS_CRD_PSK, server_pskcred);
+
+ return session;
+}
+
+static int
+pskfunc (gnutls_session_t session, const char *username, gnutls_datum_t * key)
+{
+ if (debug)
+ printf ("psk: username %s\n", username);
+ key->data = gnutls_malloc (4);
+ key->data[0] = 0xDE;
+ key->data[1] = 0xAD;
+ key->data[2] = 0xBE;
+ key->data[3] = 0xEF;
+ key->size = 4;
+ return 0;
+}
+
+int err, ret;
+char topbuf[512];
+gnutls_session_t session;
+char buffer[MAX_BUF + 1];
+int optval = 1;
+
+static void
+server (int sd)
+{
+ gnutls_certificate_credentials_t serverx509cred;
+
+ /* this must be called once in the program
+ */
+ global_init ();
+ gnutls_global_set_log_function (tls_log_func);
+ if (debug)
+ gnutls_global_set_log_level (4711);
+
+ side = "server";
+
+ gnutls_psk_allocate_server_credentials (&server_pskcred);
+ gnutls_psk_set_server_credentials_function (server_pskcred, pskfunc);
+ gnutls_certificate_allocate_credentials (&serverx509cred);
+ gnutls_certificate_set_x509_key_mem (serverx509cred,
+ &server_cert, &server_key,
+ GNUTLS_X509_FMT_PEM);
+
+ session = initialize_tls_session ();
+
+ gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, serverx509cred);
+
+ gnutls_transport_set_int (session, sd);
+ ret = gnutls_handshake (session);
+ if (ret < 0)
+ {
+ close (sd);
+ gnutls_deinit (session);
+ fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
+ return;
+ }
+ if (debug)
+ success ("server: Handshake was completed\n");
+
+ /* see the Getting peer's information example */
+ /* print_info(session); */
+
+ for (;;)
+ {
+ memset (buffer, 0, MAX_BUF + 1);
+ ret = gnutls_record_recv (session, buffer, MAX_BUF);
+
+ if (ret == 0)
+ {
+ if (debug)
+ success ("server: Peer has closed the GnuTLS connection\n");
+ break;
+ }
+ else if (ret < 0)
+ {
+ fail ("server: Received corrupted data(%d). Closing...\n", ret);
+ break;
+ }
+ else if (ret > 0)
+ {
+ /* echo data back to the client
+ */
+ gnutls_record_send (session, buffer, strlen (buffer));
+ }
+ }
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye (session, GNUTLS_SHUT_WR);
+
+ close (sd);
+ gnutls_deinit (session);
+
+ gnutls_psk_free_server_credentials (server_pskcred);
+ gnutls_certificate_free_credentials (serverx509cred);
+
+ gnutls_global_deinit ();
+
+ if (debug)
+ success ("server: finished\n");
+}
+
+void
+doit (void)
+{
+ pid_t child;
+ int sockets[2];
+
+ err = socketpair (AF_UNIX, SOCK_STREAM, 0, sockets);
+ if (err == -1)
+ {
+ perror ("socketpair");
+ fail ("socketpair failed\n");
+ return;
+ }
+
+ child = fork ();
+ if (child < 0)
+ {
+ perror ("fork");
+ fail ("fork");
+ return;
+ }
+
+ if (child)
+ {
+ int status;
+ /* parent */
+ server (sockets[0]);
+ wait (&status);
+ }
+ else
+ client (sockets[1]);
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
