Added test for duplicate packet detection in DTLS.

2 files changed, 435 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3bc8f031db..c06ba0f3f7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -71,7 +71,7 @@ ctests = mini-deflate simple gc set_pkcs12_cred certder certuniqueid	\
 	 mini-termination mini-x509-cas mini-x509-2 pkcs12_simple \
 	 mini-emsgsize-dtls mini-handshake-timeout chainverify-unsorted \
 	 mini-dtls-heartbeat mini-x509-callbacks key-openssl		\
-	 mini-dtls-srtp
+	 mini-dtls-srtp mini-dtls-record
 
 if ENABLE_OCSP
 ctests += ocsp
diff --git a/tests/mini-dtls-record.c b/tests/mini-dtls-record.c
new file mode 100644
index 0000000000..0dce462da7
--- /dev/null
+++ b/tests/mini-dtls-record.c
@@ -0,0 +1,434 @@
+/*
+ * 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 <errno.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 "utils.h"
+
+static int test_finished = 0;
+static void terminate (void);
+
+/* This program tests the rehandshake in DTLS
+ */
+
+/*
+static void
+tls_audit_log_func (gnutls_session_t session, const char *str)
+{
+  fprintf (stderr, "|<%p>| %s", session, str);
+}
+*/
+
+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);
+}
+
+/* These are global */
+static pid_t child;
+
+/* A test client/server app for DTLS duplicate packet detection.
+ */
+
+#define MAX_BUF 1024
+
+#define MAX_SEQ 128
+
+static int msg_seq[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 16, 5, 32, 11, 11, 11, 11, 12, 10, 13, 14, 
+  15, 16, 17, 19, 20, 18, 22, 24, 23, 25, 26, 27, 29, 28, 29, 29, 30, 31, 32, 33, 34, 35, 37, 36, 38, 39, 
+  42, 37, 40, 41, 41, -1};
+static unsigned int current = 0;
+static unsigned int pos = 0;
+
+unsigned char* stored_messages[MAX_SEQ];
+unsigned int stored_sizes[MAX_SEQ];
+
+static ssize_t
+odd_push (gnutls_transport_ptr_t tr, const void *data, size_t len)
+{
+ssize_t ret;
+unsigned i;
+
+  if (msg_seq[current] == -1 || test_finished != 0)
+    {
+      test_finished = 1;
+      return len;
+    }
+  
+  stored_messages[current] = malloc(len);
+  memcpy(stored_messages[current], data, len);
+  stored_sizes[current] = len;
+  
+  if (pos != current)
+    {
+      for (i=pos;i<=current;i++)
+        {
+          if (stored_messages[msg_seq[i]] != NULL)
+            {
+              do
+                {
+                  ret = send((long int)tr, stored_messages[msg_seq[i]], stored_sizes[msg_seq[i]], 0);
+                }
+              while(ret == -1 && errno == EAGAIN);
+              pos++;
+            }
+          else
+            break;
+        }
+    }
+  else if (msg_seq[current] == (int)current)
+    {
+      do
+        {
+          ret = send((long int)tr, data, len, 0);
+        }
+      while(ret == -1 && errno == EAGAIN);
+
+      current++;
+      pos++;
+    
+      return ret;
+    }
+  else if (stored_messages[msg_seq[current]] != NULL)
+    {
+      do
+        {
+          ret = send((long int)tr, stored_messages[msg_seq[current]], stored_sizes[msg_seq[current]], 0);
+        }
+      while(ret == -1 && errno == EAGAIN);
+      current++;
+      pos++;
+      return ret;
+    }
+
+  current++;
+
+  return len;
+}
+
+static ssize_t
+n_push (gnutls_transport_ptr_t tr, const void *data, size_t len)
+{
+  return send((unsigned long)tr, data, len, 0);
+}
+
+/* The first five messages are handshake. Thus corresponds to msg_seq+5 */
+static int recv_msg_seq[] = { 1, 2, 3, 4, 5, 6, 12, 28, 7, 8, 9, 10, 11, 13, 15, 16, 14, 18, 20, 19, 21, 22, 
+ 23, 25, 24, 26, 27, 29, 30, 31, 33, 32, 34, 35, 38, 36, 37, -1};
+
+static void
+client (int fd)
+{
+    gnutls_session_t session;
+    int ret;
+    char buffer[MAX_BUF + 1];
+    gnutls_anon_client_credentials_t anoncred;
+    unsigned char seq[8];
+    uint64_t useq;
+    unsigned current = 0;
+    struct timespec ts;
+    
+    ts.tv_sec = 0;
+    ts.tv_nsec = 100*1000*1000;
+    /* Need to enable anonymous KX specifically. */
+
+/*    gnutls_global_set_audit_log_function (tls_audit_log_func); */
+    gnutls_global_init ();
+
+    if (debug)
+      {
+          gnutls_global_set_log_function (client_log_func);
+          gnutls_global_set_log_level (99);
+      }
+
+    gnutls_anon_allocate_client_credentials (&anoncred);
+
+    /* Initialize TLS session
+     */
+    gnutls_init (&session, GNUTLS_CLIENT | GNUTLS_DATAGRAM);
+    gnutls_heartbeat_enable (session, GNUTLS_HB_PEER_ALLOWED_TO_SEND);
+    gnutls_dtls_set_mtu (session, 1500);
+
+    /* Use default priorities */
+    gnutls_priority_set_direct (session,
+                                "NONE:+VERS-DTLS1.0:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL",
+                                NULL);
+
+    /* put the anonymous credentials to the current session
+     */
+    gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
+
+    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");
+      }
+
+    gnutls_record_send( session, buffer, 1);
+
+    if (debug)
+        success ("client: DTLS version is: %s\n",
+                 gnutls_protocol_get_name (gnutls_protocol_get_version
+                                           (session)));
+    do
+      {
+        ret = gnutls_record_recv_seq (session, buffer, sizeof (buffer), seq);
+
+        if (ret > 0)
+          {
+            useq = seq[3] | (seq[2] << 8) | (seq[1] << 16) | (seq[0] << 24);
+            useq <<= 32;
+            useq |= seq[7] | (seq[6] << 8) | (seq[5] << 16) | (seq[4] << 24);
+        
+            if (recv_msg_seq[current] == -1)
+              {
+                fail("received message sequence differs\n");
+                terminate();
+              }
+        
+            if ((uint32_t)recv_msg_seq[current] != (uint32_t)useq)
+              {
+                fail("received message sequence differs\n");
+                terminate();
+              }
+
+            current++;
+          }
+          nanosleep(&ts, NULL);
+      }
+    while ((ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED || ret > 0));
+
+    gnutls_bye (session, GNUTLS_SHUT_WR);
+
+    close (fd);
+
+    gnutls_deinit (session);
+
+    gnutls_anon_free_client_credentials (anoncred);
+
+    gnutls_global_deinit ();
+}
+
+
+static void
+terminate (void)
+{
+    int status;
+
+    kill (child, SIGTERM);
+    wait (&status);
+    exit (1);
+}
+
+static void
+server (int fd)
+{
+    int ret;
+    gnutls_session_t session;
+    gnutls_anon_server_credentials_t anoncred;
+    struct timespec ts;
+    char c;
+    
+    ts.tv_sec = 0;
+    ts.tv_nsec = 100*1000*1000;
+
+    gnutls_global_init ();
+
+    if (debug)
+      {
+          gnutls_global_set_log_function (server_log_func);
+          gnutls_global_set_log_level (4711);
+      }
+
+    gnutls_anon_allocate_server_credentials (&anoncred);
+
+    gnutls_init (&session, GNUTLS_SERVER | GNUTLS_DATAGRAM);
+    gnutls_transport_set_push_function (session, odd_push);
+    gnutls_heartbeat_enable (session, GNUTLS_HB_PEER_ALLOWED_TO_SEND);
+    gnutls_dtls_set_mtu (session, 1500);
+
+    /* avoid calling all the priority functions, since the defaults
+     * are adequate.
+     */
+    gnutls_priority_set_direct (session,
+                                "NONE:+VERS-DTLS1.0:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL",
+                                NULL);
+    gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
+
+    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)));
+
+    gnutls_record_recv(session, &c, 1);
+    do
+      {
+          do
+            {
+                ret = gnutls_record_send( session, &c, 1);
+            }
+          while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
+          if (ret < 0)
+            {
+                fail ("send: %s\n", gnutls_strerror (ret));
+                terminate ();
+            }
+          nanosleep(&ts, NULL);
+      }
+    while (test_finished == 0);
+
+    gnutls_transport_set_push_function (session, n_push);
+    nanosleep(&ts, NULL);
+    do
+      {
+        ret = gnutls_bye (session, GNUTLS_SHUT_WR);
+      }
+    while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
+    close (fd);
+    gnutls_deinit (session);
+
+    gnutls_anon_free_server_credentials (anoncred);
+
+    gnutls_global_deinit ();
+
+    if (debug)
+        success ("server: finished\n");
+}
+
+static void
+start (void)
+{
+    int fd[2];
+    int ret;
+
+    ret = socketpair (AF_UNIX, SOCK_DGRAM, 0, fd);
+#if 0
+    ret = socketpair (AF_UNIX, SOCK_STREAM, 0, fd);
+#endif
+    if (ret < 0)
+      {
+          perror ("socketpair");
+          exit (1);
+      }
+
+    child = fork ();
+    if (child < 0)
+      {
+          perror ("fork");
+          fail ("fork");
+          exit (1);
+      }
+
+    if (child)
+      {
+          int status;
+          /* parent */
+
+          server (fd[0]);
+          wait (&status);
+          if (WEXITSTATUS (status) != 0)
+              fail ("Child died with status %d\n", WEXITSTATUS (status));
+      }
+    else
+      {
+          close (fd[0]);
+          client (fd[1]);
+          exit (0);
+      }
+}
+
+void
+doit (void)
+{
+    start ();
+}
+
+#endif /* _WIN32 */