path: root/tests/mini-termination.c

/*
 * Copyright (C) 2012 Free Software Foundation, Inc.
 *
 * 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
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>

#if defined(_WIN32)

int main()
{
  exit(77);
}

#else

#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 <gnutls/dtls.h>
#include <signal.h>

#include "utils.h"

static void terminate(void);

/* This program tests the robustness of record
 * decoding.
 */

static void
server_log_func (int level, const char *str)
{
//  fprintf (stderr, "server|<%d>| %s", level, str);
}

static void
client_log_func (int level, const char *str)
{
  fprintf (stderr, "client|<%d>| %s", level, str);
}

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)
};


/* A very basic TLS client, with anonymous authentication.
 */

#define MAX_BUF 1024

static void
client (int fd, const char* prio)
{
  int ret;
  char buffer[MAX_BUF + 1];
  gnutls_anon_client_credentials_t anoncred;
  gnutls_certificate_credentials_t x509_cred;
  gnutls_session_t session;
  /* Need to enable anonymous KX specifically. */

  gnutls_global_init ();

  if (debug)
    {
      gnutls_global_set_log_function (client_log_func);
      gnutls_global_set_log_level (7);
    }

  gnutls_anon_allocate_client_credentials (&anoncred);
  gnutls_certificate_allocate_credentials (&x509_cred);

  /* Initialize TLS session
   */
  gnutls_init (&session, GNUTLS_CLIENT);

  /* Use default priorities */
  gnutls_priority_set_direct (session, prio, NULL);

  /* put the anonymous credentials to the current session
   */
  gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
  gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);

  gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);

  /* Perform the TLS handshake
   */
  do 
    {
      ret = gnutls_handshake (session);
    }
  while (ret < 0 && gnutls_error_is_fatal(ret) == 0);

  if (ret < 0)
    {
      fail ("client: Handshake failed\n");
      gnutls_perror (ret);
      exit(1);
    }
  else
    {
      if (debug)
        success ("client: Handshake was completed\n");
    }

  if (debug)
    success ("client: TLS version is: %s\n",
             gnutls_protocol_get_name (gnutls_protocol_get_version
                                       (session)));
  do {
    do {
      ret = gnutls_record_recv (session, buffer, MAX_BUF);
    } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
  } while( ret > 0);

  if (ret == GNUTLS_E_PREMATURE_TERMINATION)
    {
      if (debug)
        success ("client: Peer has closed the TLS connection\n");
      goto end;
    }
  else
    {
      fail ("client: Unexpected error: %d (%s)\n", ret, gnutls_strerror (ret));
      exit(1);
    }

end:
  close (fd);

  gnutls_deinit (session);

  gnutls_anon_free_client_credentials (anoncred);
  gnutls_certificate_free_credentials (x509_cred);

  gnutls_global_deinit ();
}


/* These are global */
gnutls_anon_server_credentials_t anoncred;
gnutls_certificate_credentials_t x509_cred;
pid_t child;

static gnutls_session_t
initialize_tls_session (const char* prio)
{
  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, prio, NULL);

  gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
  gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);

  return session;
}

static void terminate(void)
{
  kill(child, SIGTERM);
  exit(1);
}

static void
server (int fd, const char* prio)
{
int ret;
char buffer[MAX_BUF + 1];
gnutls_session_t session;

  /* this must be called once in the program
   */
  gnutls_global_init ();
  memset(buffer, 0, sizeof(buffer));

  if (debug)
    {
      gnutls_global_set_log_function (server_log_func);
      gnutls_global_set_log_level (4711);
    }

  gnutls_certificate_allocate_credentials (&x509_cred);
  gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
                                       GNUTLS_X509_FMT_PEM);

  gnutls_anon_allocate_server_credentials (&anoncred);

  session = initialize_tls_session (prio);

  gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);

  do 
    {
      ret = gnutls_handshake (session);
    }
  while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
  if (ret < 0)
    {
      close (fd);
      gnutls_deinit (session);
      fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
      terminate();
    }
  if (debug)
    success ("server: Handshake was completed\n");

  if (debug)
    success ("server: TLS version is: %s\n",
             gnutls_protocol_get_name (gnutls_protocol_get_version
                                       (session)));
  close(fd);
  gnutls_deinit (session);

  gnutls_anon_free_server_credentials (anoncred);
  gnutls_certificate_free_credentials (x509_cred);

  gnutls_global_deinit ();

  if (debug)
    success ("server: finished\n");
}

static void start (const char* prio)
{
  int fd[2];
  int ret;
  
  ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
  if (ret < 0)
    {
      perror("socketpair");
      exit(1);
    }

  child = fork ();
  if (child < 0)
    {
      perror ("fork");
      fail ("fork");
      exit(1);
    }

  if (child)
    {
      /* parent */
      close(fd[1]);
      server (fd[0], prio);
      waitpid(-1, NULL, 0);
      //kill(child, SIGTERM);
    }
  else 
    {
      close(fd[0]);
      client (fd[1], prio);
      exit(0);
    }
}

static void ch_handler(int sig)
{
int status = 0;

  waitpid(-1, &status, 0);
  if (WEXITSTATUS(status) != 0 ||
      (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV))
    {
      if (WIFSIGNALED(status))
        fail("Child died with sigsegv\n");
      else
        fail("Child died with status %d\n", WEXITSTATUS(status));
      terminate();
    }
  return;
}

void
doit (void)
{
  signal(SIGCHLD, ch_handler);

  start("NORMAL");
}

#endif /* _WIN32 */