Added gnutls_x509_dn_import/init/deinit() to access raw DER DN. Patch

by Joe Orton.

6 files changed, 679 insertions, 7 deletions

diff --git a/NEWS b/NEWS
index 11a3a47472..5da83986ec 100644
--- a/NEWS
+++ b/NEWS
@@ -29,6 +29,9 @@ can be used for authentication.
 
 ** certtool can print information on OpenPGP certificates and keys.
 
+** Added gnutls_x509_dn_import/init/deinit() to access raw DER DN. Patch
+by Joe Orton.
+
 ** Included the LGPL version of opencdk
 
 ** Doc fixes.
@@ -36,8 +39,6 @@ Clarify that srp_base64 is not the same as normal base64.
 
 ** API and ABI modifications:
 gnutls_openpgp_keyid_t: ADDED, instead of hard-coded 'unsigned char[8]'.
-gnutls_openpgp_privkey_sign_hash: MODIFIED to account for keyid
-gnutls_openpgp_keyring_check_id: MODIFIED to account for new keyid type
 gnutls_openpgp_crt_get_key_id: ADDED to account for new keyid type,
                                obsoletes gnutls_openpgp_crt_get_id().
 gnutls_openpgp_privkey_get_id: RENAMED to gnutls_openpgp_privkey_get_key_id
@@ -69,6 +70,11 @@ gnutls_openpgp_privkey_export_subkey_rsa_raw: ADDED
 gnutls_openpgp_privkey_export_dsa_raw: ADDED
 gnutls_openpgp_privkey_export_rsa_raw: ADDED
 gnutls_openpgp_privkey_export: ADDED
+gnutls_certificate_set_openpgp_key_file2: ADDED
+gnutls_certificate_set_openpgp_key_mem2: ADDED
+gnutls_x509_dn_init: ADDED
+gnutls_x509_dn_import: ADDED
+gnutls_x509_dn_deinit: ADDED
 
 * Version 2.3.0 (released 2008-01-08)
 
diff --git a/includes/gnutls/x509.h b/includes/gnutls/x509.h
index ad184b8074..4b700f4280 100644
--- a/includes/gnutls/x509.h
+++ b/includes/gnutls/x509.h
@@ -328,6 +328,14 @@ extern "C"
   int gnutls_x509_dn_get_rdn_ava (gnutls_x509_dn_t dn, int irdn,
 				  int iava, gnutls_x509_ava_st *avast);
 
+  int gnutls_x509_dn_init (gnutls_x509_dn_t * dn);
+
+  int gnutls_x509_dn_import (gnutls_x509_dn_t odn,
+                             const gnutls_datum_t * data);
+
+  void gnutls_x509_dn_deinit (gnutls_x509_dn_t idn);
+
+
 /* CRL handling functions.
  */
   int gnutls_x509_crl_init (gnutls_x509_crl_t * crl);
diff --git a/lib/x509/dn.c b/lib/x509/dn.c
index 5167ebf233..8b84de236b 100644
--- a/lib/x509/dn.c
+++ b/lib/x509/dn.c
@@ -943,6 +943,85 @@ _gnutls_x509_set_dn_oid (ASN1_TYPE asn1_struct,
   return 0;
 }
 
+/**
+  * gnutls_x509_dn_init: initialize an opaque DN object
+  *
+  * @odn: the object to be initialized
+  *
+  * This function initializes a #gnutls_x509_dn_t structure.
+  *
+  * The object returned must be deallocated using
+  * gnutls_x509_dn_deinit().
+  *
+  * Returns: 0 on success, or an error code.
+  **/
+int gnutls_x509_dn_init (gnutls_x509_dn_t * odn)
+{
+  int result;
+  ASN1_TYPE dn = ASN1_TYPE_EMPTY;
+
+  if ((result =
+       asn1_create_element (_gnutls_get_pkix (),
+			    "PKIX1.Name", &dn)) != ASN1_SUCCESS)
+    {
+      gnutls_assert ();
+      return _gnutls_asn2err (result);
+    }
+
+  *odn = dn;
+
+  return 0;
+}
+
+
+/**
+  * gnutls_x509_dn_import: get opaque DN object from DER RDN sequence
+  *
+  * @odn: the structure that will hold the imported DN
+  * @data: should contain a DER encoded RDN sequence
+  *
+  * This function parses an RDN sequence and stores the result to a
+  * #gnutls_x509_dn_t structure. The structure must have been initialized
+  * with gnutls_x509_dn_init(). You may use gnutls_x509_dn_get_rdn_ava() to 
+  * decode the DN.
+  *
+  * Returns: 0 on success, or an error code.
+  **/
+int
+gnutls_x509_dn_import (gnutls_x509_dn_t odn,
+                       const gnutls_datum_t * data)
+{
+  int result;
+  char err[MAX_ERROR_DESCRIPTION_SIZE];
+  ASN1_TYPE dn = odn;
+
+  result = asn1_der_decoding (&dn, data->data, data->size, err);
+  if (result != ASN1_SUCCESS)
+    {
+      /* couldn't decode DER */
+      _gnutls_x509_log("ASN.1 Decoding error: %s\n", err);
+      gnutls_assert ();
+      return _gnutls_asn2err (result);
+    }
+
+  return 0;
+}
+
+/**
+  * gnutls_x509_dn_deinit: deallocate a DN object
+  * @idn: a DN opaque object pointer.
+  *
+  * This function deallocates the DN object as returned by
+  * gnutls_x509_dn_import().
+  *
+  **/
+void 
+gnutls_x509_dn_deinit (gnutls_x509_dn_t idn)
+{
+  ASN1_TYPE dn = idn;
+
+  asn1_delete_structure(&dn);
+}
 
 /**
   * gnutls_x509_rdn_get - This function parses an RDN sequence and returns a string
diff --git a/lib/x509/x509.c b/lib/x509/x509.c
index 93e81bbc2f..33362a5655 100644
--- a/lib/x509/x509.c
+++ b/lib/x509/x509.c
@@ -1799,7 +1799,11 @@ get_dn (gnutls_x509_crt_t cert, const char *whom, gnutls_x509_dn_t *dn)
  * @dn: output variable with pointer to opaque DN.
  *
  * Return the Certificate's Subject DN as an opaque data type.  You
- * may use gnutls_x509_dn_get_rdn_ava() to decode the DN.
+ * may use gnutls_x509_dn_get_rdn_ava() to decode the DN. 
+ *
+ * Note that @dn should be treated as constant. Because points 
+ * into the @cert object, you may not deallocate @cert 
+ * and continue to access @dn.
  *
  * Returns: Returns 0 on success, or an error code.
  **/
@@ -1818,8 +1822,9 @@ gnutls_x509_crt_get_subject (gnutls_x509_crt_t cert,
  * Return the Certificate's Issuer DN as an opaque data type.  You may
  * use gnutls_x509_dn_get_rdn_ava() to decode the DN.
  *
- * Note that @dn points into the @cert object, and thus you may not
- * deallocate @cert and continue to access @dn.
+ * Note that @dn should be treated as constant. Because points 
+ * into the @cert object, you may not deallocate @cert 
+ * and continue to access @dn.
  *
  * Returns: Returns 0 on success, or an error code.
  **/
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 7d9e17e7ff..f3426269f4 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in
-# Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation
+# Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation
 #
 # Author: Simon Josefsson
 #
@@ -40,7 +40,7 @@ ctests = simple openssl gc set_pkcs12_cred certder	\
 	certificate_set_x509_crl dn parse_ca
 openssl_LDADD = $(LDADD) ../libextra/libgnutls-openssl.la
 if HAVE_FORK
-ctests +=  x509self x509signself anonself pskself dhepskself tlsia resume
+ctests +=  x509self x509signself x509dn anonself pskself dhepskself tlsia resume
 tlsia_LDADD = ../libextra/libgnutls-extra.la $(LDADD) @LTLIBREADLINE@
 endif
 if ENABLE_OPRFI
diff --git a/tests/x509dn.c b/tests/x509dn.c
new file mode 100644
index 0000000000..95ec900faa
--- /dev/null
+++ b/tests/x509dn.c
@@ -0,0 +1,574 @@
+/*
+ * Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation
+ *
+ * Author: Simon Josefsson
+ *
+ * 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. */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+
+#include "utils.h"
+
+#include "ex-session-info.c"
+#include "ex-x509-info.c"
+
+pid_t child;
+
+static void
+tls_log_func (int level, const char *str)
+{
+  fprintf (stderr, "%s |<%d>| %s", child ? "server" : "client", level, str);
+}
+
+/* A very basic TLS client, with anonymous authentication.
+ */
+
+#define MAX_BUF 1024
+#define MSG "Hello TLS"
+
+/* Connects to the peer and returns a socket
+ * descriptor.
+ */
+int
+tcp_connect (void)
+{
+  const char *PORT = "5556";
+  const char *SERVER = "127.0.0.1";
+  int err, sd;
+  struct sockaddr_in sa;
+
+  /* connects to server
+   */
+  sd = socket (AF_INET, SOCK_STREAM, 0);
+
+  memset (&sa, '\0', sizeof (sa));
+  sa.sin_family = AF_INET;
+  sa.sin_port = htons (atoi (PORT));
+  inet_pton (AF_INET, SERVER, &sa.sin_addr);
+
+  err = connect (sd, (struct sockaddr *) &sa, sizeof (sa));
+  if (err < 0)
+    {
+      fprintf (stderr, "Connect error\n");
+      exit (1);
+    }
+
+  return sd;
+}
+
+/* closes the given socket descriptor.
+ */
+void
+tcp_close (int sd)
+{
+  shutdown (sd, SHUT_RDWR);	/* no more receptions */
+  close (sd);
+}
+
+const char ca_pem[] =
+  "-----BEGIN CERTIFICATE-----\n"
+  "MIIB5zCCAVKgAwIBAgIERiYdJzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
+  "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTExWhcNMDgwNDE3MTMyOTExWjAZMRcw\n"
+  "FQYDVQQDEw5HbnVUTFMgdGVzdCBDQTCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA\n"
+  "vuyYeh1vfmslnuggeEKgZAVmQ5ltSdUY7H25WGSygKMUYZ0KT74v8C780qtcNt9T\n"
+  "7EPH/N6RvB4BprdssgcQLsthR3XKA84jbjjxNCcaGs33lvOz8A1nf8p3hD+cKfRi\n"
+  "kfYSW2JazLrtCC4yRCas/SPOUxu78of+3HiTfFm/oXUCAwEAAaNDMEEwDwYDVR0T\n"
+  "AQH/BAUwAwEB/zAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTpPBz7rZJu5gak\n"
+  "Viyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAiaIRqGfp1jPpNeVhABK60SU0KIAy\n"
+  "njuu7kHq5peUgYn8Jd9zNzExBOEp1VOipGsf6G66oQAhDFp2o8zkz7ZH71zR4HEW\n"
+  "KoX6n5Emn6DvcEH/9pAhnGxNHJAoS7czTKv/JDZJhkqHxyrE1fuLsg5Qv25DTw7+\n"
+  "PfqUpIhz5Bbm7J4=\n"
+  "-----END CERTIFICATE-----\n";
+const gnutls_datum_t ca = { ca_pem, sizeof (ca_pem) };
+
+const char cert_pem[] =
+  "-----BEGIN CERTIFICATE-----\n"
+  "MIICHjCCAYmgAwIBAgIERiYdNzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
+  "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTI3WhcNMDgwNDE3MTMyOTI3WjAdMRsw\n"
+  "GQYDVQQDExJHbnVUTFMgdGVzdCBjbGllbnQwgZwwCwYJKoZIhvcNAQEBA4GMADCB\n"
+  "iAKBgLtmQ/Xyxde2jMzF3/WIO7HJS2oOoa0gUEAIgKFPXKPQ+GzP5jz37AR2ExeL\n"
+  "ZIkiW8DdU3w77XwEu4C5KL6Om8aOoKUSy/VXHqLnu7czSZ/ju0quak1o/8kR4jKN\n"
+  "zj2AC41179gAgY8oBAOgIo1hBAf6tjd9IQdJ0glhaZiQo1ipAgMBAAGjdjB0MAwG\n"
+  "A1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDwYDVR0PAQH/BAUDAweg\n"
+  "ADAdBgNVHQ4EFgQUTLkKm/odNON+3svSBxX+odrLaJEwHwYDVR0jBBgwFoAU6Twc\n"
+  "+62SbuYGpFYsouHAUyfI8pUwCwYJKoZIhvcNAQEFA4GBALujmBJVZnvaTXr9cFRJ\n"
+  "jpfc/3X7sLUsMvumcDE01ls/cG5mIatmiyEU9qI3jbgUf82z23ON/acwJf875D3/\n"
+  "U7jyOsBJ44SEQITbin2yUeJMIm1tievvdNXBDfW95AM507ShzP12sfiJkJfjjdhy\n"
+  "dc8Siq5JojruiMizAf0pA7in\n"
+  "-----END CERTIFICATE-----\n";
+const gnutls_datum_t cert = { cert_pem, sizeof (cert_pem) };
+
+const char key_pem[] =
+  "-----BEGIN RSA PRIVATE KEY-----\n"
+  "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
+  "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
+  "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
+  "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
+  "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
+  "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
+  "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
+  "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
+  "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
+  "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
+  "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
+  "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
+  "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
+  "-----END RSA PRIVATE KEY-----\n";
+const gnutls_datum_t key = { key_pem, sizeof (key_pem) };
+
+#define EXPECT_RDN0 "GnuTLS test CA"
+
+static int
+cert_callback (gnutls_session session,
+               const gnutls_datum *req_ca_rdn, int nreqs,
+               const gnutls_pk_algorithm *sign_algos,
+               int sign_algos_length, gnutls_retr_st *st)
+{
+  int result;
+  gnutls_x509_dn_t dn;
+
+  if (nreqs != 1)
+    {
+      fail ("client: invoked to provide client cert, %d CA .\n", nreqs);
+      return -1;
+    }
+
+  success ("client: invoked to provide client cert.\n");
+
+  result = gnutls_x509_dn_init( &dn);
+  if (result < 0)
+    {
+      fail ("client: could not initialize DN.\n");
+      return -1;
+    }
+
+  result = gnutls_x509_dn_import (dn, req_ca_rdn);
+  if (result == 0)
+    {
+      gnutls_x509_ava_st val;
+      
+      success ("client: imported DN.\n");
+      
+      if (gnutls_x509_dn_get_rdn_ava (dn, 0, 0, &val) == 0)
+        {
+          success ("client: got RDN 0.\n");
+          
+          if (val.value.size == strlen(EXPECT_RDN0)
+              && strncmp(val.value.data, EXPECT_RDN0, val.value.size) == 0)
+            {
+              success ("client: RND 0 correct.\n");
+            }
+          else
+            {
+              fail ("client: RND 0 bad: %.*s\n", 
+                    val.value.size, val.value.data);
+              return -1;
+            }
+        }
+      else
+        {
+          fail ("client: could not retrieve RDN 0.\n");
+          return -1;
+        }
+      
+      gnutls_x509_dn_deinit (dn);
+    }
+  else
+    {
+      fail ("client: failed to parse RDN: %s\n", gnutls_strerror (result));
+    }
+  
+  return 0;
+}
+
+
+void
+client (void)
+{
+  int ret, sd, ii;
+  gnutls_session_t session;
+  char buffer[MAX_BUF + 1];
+  gnutls_certificate_credentials_t xcred;
+
+  gnutls_global_init ();
+
+  gnutls_global_set_log_function (tls_log_func);
+  gnutls_global_set_log_level (4711);
+
+  gnutls_certificate_allocate_credentials (&xcred);
+
+  /* sets the trusted cas file
+   */
+  gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
+
+  gnutls_certificate_client_set_retrieve_function (xcred, cert_callback);
+
+  /* Initialize TLS session
+   */
+  gnutls_init (&session, GNUTLS_CLIENT);
+
+  /* Use default priorities */
+  gnutls_set_default_priority (session);
+
+  /* put the x509 credentials to the current session
+   */
+  gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
+
+  /* connect to the peer
+   */
+  sd = tcp_connect ();
+
+  gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
+
+  /* Perform the TLS handshake
+   */
+  ret = gnutls_handshake (session);
+
+  if (ret < 0)
+    {
+      fail ("client: Handshake failed\n");
+      gnutls_perror (ret);
+      goto end;
+    }
+  else
+    {
+      success ("client: Handshake was completed\n");
+    }
+
+  success ("client: TLS version is: %s\n",
+	   gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
+
+  /* see the Getting peer's information example */
+  print_info(session);
+
+  gnutls_record_send (session, MSG, strlen (MSG));
+
+  ret = gnutls_record_recv (session, buffer, MAX_BUF);
+  if (ret == 0)
+    {
+      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;
+    }
+
+  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:
+
+  tcp_close (sd);
+
+  gnutls_deinit (session);
+
+  gnutls_certificate_free_credentials (xcred);
+
+  gnutls_global_deinit ();
+}
+
+/* This is a sample TLS 1.0 echo server, using X.509 authentication.
+ */
+
+#define SA struct sockaddr
+#define MAX_BUF 1024
+#define PORT 5556		/* listen to 5556 port */
+#define DH_BITS 1024
+
+/* These are global */
+gnutls_certificate_credentials_t x509_cred;
+
+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_set_default_priority (session);
+
+  gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
+
+  /* request client certificate if any.
+   */
+  gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
+
+  gnutls_dh_set_prime_bits (session, DH_BITS);
+
+  return session;
+}
+
+static gnutls_dh_params_t dh_params;
+
+static int
+generate_dh_params (void)
+{
+  const gnutls_datum_t p3 = { pkcs3, strlen (pkcs3) };
+  /* Generate Diffie Hellman parameters - for use with DHE
+   * kx algorithms. These should be discarded and regenerated
+   * once a day, once a week or once a month. Depending on the
+   * security requirements.
+   */
+  gnutls_dh_params_init (&dh_params);
+  return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
+}
+
+int err, listen_sd, i;
+int sd, ret;
+struct sockaddr_in sa_serv;
+struct sockaddr_in sa_cli;
+int client_len;
+char topbuf[512];
+gnutls_session_t session;
+char buffer[MAX_BUF + 1];
+int optval = 1;
+
+
+const 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) };
+
+const 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) };
+
+void
+server_start (void)
+{
+  /* this must be called once in the program
+   */
+  gnutls_global_init ();
+
+  gnutls_global_set_log_function (tls_log_func);
+  gnutls_global_set_log_level (4711);
+
+  gnutls_certificate_allocate_credentials (&x509_cred);
+  gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
+
+  gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
+				       GNUTLS_X509_FMT_PEM);
+
+  success ("Launched, generating DH parameters...\n");
+
+  generate_dh_params ();
+
+  gnutls_certificate_set_dh_params (x509_cred, dh_params);
+
+  /* Socket operations
+   */
+  listen_sd = socket (AF_INET, SOCK_STREAM, 0);
+  if (err == -1)
+    {
+      perror ("socket");
+      fail ("server: socket failed\n");
+      return;
+    }
+
+  memset (&sa_serv, '\0', sizeof (sa_serv));
+  sa_serv.sin_family = AF_INET;
+  sa_serv.sin_addr.s_addr = INADDR_ANY;
+  sa_serv.sin_port = htons (PORT);	/* Server Port number */
+
+  setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int));
+
+  err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
+  if (err == -1)
+    {
+      perror ("bind");
+      fail ("server: bind failed\n");
+      return;
+    }
+
+  err = listen (listen_sd, 1024);
+  if (err == -1)
+    {
+      perror ("listen");
+      fail ("server: listen failed\n");
+      return;
+    }
+
+  success ("server: ready. Listening to port '%d'.\n", PORT);
+}
+
+void
+server (void)
+{
+  client_len = sizeof (sa_cli);
+
+  session = initialize_tls_session ();
+
+  sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
+
+  success ("server: connection from %s, port %d\n",
+	   inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
+		      sizeof (topbuf)), ntohs (sa_cli.sin_port));
+
+  gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) 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;
+    }
+  success ("server: Handshake was completed\n");
+
+  success ("server: TLS version is: %s\n",
+	   gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
+
+  /* see the Getting peer's information example */
+  print_info(session);
+
+  i = 0;
+  for (;;)
+    {
+      bzero (buffer, MAX_BUF + 1);
+      ret = gnutls_record_recv (session, buffer, MAX_BUF);
+
+      if (ret == 0)
+	{
+	  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);
+
+  close (listen_sd);
+
+  gnutls_certificate_free_credentials (x509_cred);
+
+  gnutls_global_deinit ();
+
+  success ("server: finished\n");
+}
+
+
+void
+doit (void)
+{
+  server_start ();
+  if (error_count)
+    return;
+
+  child = fork ();
+  if (child < 0)
+    {
+      perror ("fork");
+      fail ("fork");
+      return;
+    }
+
+  if (child)
+    {
+      int status;
+      /* parent */
+      server ();
+      wait (&status);
+      
+#if defined(WIFEXITED) && defined(WEXITSTATUS)
+      if (WIFEXITED (status) && WEXITSTATUS (status))
+        {
+          fail ("server: client failed with exit status %d\n", WEXITSTATUS (status));
+        }
+#endif
+#if defined(WIFSIGNALED) && defined(WTERMSIG)
+      if (WIFSIGNALED (status))
+        {
+          fail ("server: client failed with fatal signal %d\n", WTERMSIG (status));
+        }
+#endif
+
+    }
+  else
+    client ();
+}