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* Copyright (C) 2008, 2010 Free Software Foundation, Inc.
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* Author: Simon Josefsson
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* This file is part of GnuTLS.
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* GnuTLS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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* GnuTLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with GnuTLS; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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/* Code based on ./srn0.c.
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* This tests that clients without support for safe renegotiation is
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* able to handshake against servers with support, but not able to
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* rehandshake (server will refuse rehandshake).
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#include <gnutls/gnutls.h>
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tls_log_func (int level, const char *str)
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fprintf (stderr, "|<%d>| %s", level, str);
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static char *to_server;
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static size_t to_server_len;
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static char *to_client;
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static size_t to_client_len;
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client_pull (gnutls_transport_ptr_t tr, void *data, size_t len)
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if (to_client_len < len)
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gnutls_transport_set_global_errno (EAGAIN);
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memcpy (data, to_client, len);
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memmove (to_client, to_client + len, to_client_len - len);
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client_push (gnutls_transport_ptr_t tr, const void *data, size_t len)
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size_t newlen = to_server_len + len;
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tmp = realloc (to_server, newlen);
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memcpy (to_server + to_server_len, data, len);
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to_server_len = newlen;
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server_pull (gnutls_transport_ptr_t tr, void *data, size_t len)
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if (to_server_len < len)
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gnutls_transport_set_global_errno (EAGAIN);
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memcpy (data, to_server, len);
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memmove (to_server, to_server + len, to_server_len - len);
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server_push (gnutls_transport_ptr_t tr, const void *data, size_t len)
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size_t newlen = to_client_len + len;
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tmp = realloc (to_client, newlen);
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memcpy (to_client + to_client_len, data, len);
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to_client_len = newlen;
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static unsigned char server_cert_pem[] =
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"-----BEGIN CERTIFICATE-----\n"
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"MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
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"VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
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"GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
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"Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
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"dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
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"DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
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"tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
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"MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
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"Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
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"GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
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"bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
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"AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
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"rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
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const gnutls_datum_t server_cert = { server_cert_pem,
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sizeof (server_cert_pem)
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static unsigned char server_key_pem[] =
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"-----BEGIN RSA PRIVATE KEY-----\n"
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"MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
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"TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
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"fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
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"AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
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"8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
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"iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
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"Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
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"oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
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"XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
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"qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
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"tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
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"hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
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"LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
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"-----END RSA PRIVATE KEY-----\n";
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const gnutls_datum_t server_key = { server_key_pem,
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sizeof (server_key_pem)
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main (int argc, char *argv[])
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int debug_level = argc - 1;
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int exit_code = EXIT_SUCCESS;
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gnutls_certificate_credentials_t serverx509cred;
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gnutls_session_t server;
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int sret = GNUTLS_E_AGAIN;
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gnutls_certificate_credentials_t clientx509cred;
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gnutls_session_t client;
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int cret = GNUTLS_E_AGAIN;
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gnutls_global_init ();
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gnutls_global_set_log_function (tls_log_func);
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gnutls_global_set_log_level (debug_level);
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gnutls_certificate_allocate_credentials (&serverx509cred);
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gnutls_certificate_set_x509_key_mem (serverx509cred,
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&server_cert, &server_key,
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GNUTLS_X509_FMT_PEM);
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gnutls_init (&server, GNUTLS_SERVER);
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gnutls_credentials_set (server, GNUTLS_CRD_CERTIFICATE, serverx509cred);
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gnutls_priority_set_direct (server, "NORMAL", NULL);
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gnutls_transport_set_push_function (server, server_push);
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gnutls_transport_set_pull_function (server, server_pull);
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gnutls_certificate_allocate_credentials (&clientx509cred);
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gnutls_init (&client, GNUTLS_CLIENT);
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gnutls_credentials_set (client, GNUTLS_CRD_CERTIFICATE, clientx509cred);
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gnutls_priority_set_direct (client, "NORMAL:%DISABLE_SAFE_RENEGOTIATION",
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gnutls_transport_set_push_function (client, client_push);
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gnutls_transport_set_pull_function (client, client_pull);
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/* Check that initially no session use the extension. */
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if (gnutls_safe_renegotiation_status (server)
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|| gnutls_safe_renegotiation_status (client))
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puts ("Client or server using extension before handshake?");
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static int max_iter = 0;
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if (cret == GNUTLS_E_AGAIN)
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cret = gnutls_handshake (client);
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tls_log_func (0, "gnutls_handshake (client)...\n");
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tls_log_func (0, gnutls_strerror (cret));
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tls_log_func (0, "\n");
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if (sret == GNUTLS_E_AGAIN)
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sret = gnutls_handshake (server);
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tls_log_func (0, "gnutls_handshake (server)...\n");
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tls_log_func (0, gnutls_strerror (sret));
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tls_log_func (0, "\n");
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!(cret == GNUTLS_E_SUCCESS && sret == GNUTLS_E_SUCCESS)
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&& (cret == GNUTLS_E_AGAIN || sret == GNUTLS_E_AGAIN));
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if (cret != GNUTLS_E_SUCCESS && sret != GNUTLS_E_SUCCESS)
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exit_code = EXIT_FAILURE;
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if (gnutls_safe_renegotiation_status (client) ||
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gnutls_safe_renegotiation_status (server))
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tls_log_func (0, "Session using safe renegotiation but shouldn't?!\n");
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exit_code = EXIT_FAILURE;
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sret = gnutls_rehandshake (server);
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tls_log_func (0, "gnutls_rehandshake (server)...\n");
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tls_log_func (0, gnutls_strerror (sret));
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tls_log_func (0, "\n");
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n = gnutls_record_recv (client, b, 1);
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if (n != GNUTLS_E_REHANDSHAKE)
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cret = GNUTLS_E_AGAIN;
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sret = GNUTLS_E_AGAIN;
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static int max_iter = 0;
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if (cret == GNUTLS_E_AGAIN)
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cret = gnutls_handshake (client);
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tls_log_func (0, "second gnutls_handshake (client)...\n");
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tls_log_func (0, gnutls_strerror (cret));
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tls_log_func (0, "\n");
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if (sret == GNUTLS_E_AGAIN)
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sret = gnutls_handshake (server);
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tls_log_func (0, "second gnutls_handshake (server)...\n");
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tls_log_func (0, gnutls_strerror (sret));
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tls_log_func (0, "\n");
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if (sret == GNUTLS_E_UNSAFE_RENEGOTIATION_DENIED)
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!(cret == GNUTLS_E_SUCCESS && sret == GNUTLS_E_SUCCESS)
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&& (cret == GNUTLS_E_AGAIN || sret == GNUTLS_E_AGAIN));
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if (cret != GNUTLS_E_SUCCESS
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&& sret != GNUTLS_E_UNSAFE_RENEGOTIATION_DENIED)
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if (gnutls_safe_renegotiation_status (client) ||
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gnutls_safe_renegotiation_status (server))
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tls_log_func (0, "Rehandshaked worked and uses safe reneg?!\n");
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exit_code = EXIT_FAILURE;
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gnutls_bye (client, GNUTLS_SHUT_RDWR);
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gnutls_bye (server, GNUTLS_SHUT_RDWR);
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gnutls_deinit (client);
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gnutls_deinit (server);
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gnutls_certificate_free_credentials (serverx509cred);
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gnutls_global_deinit ();
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puts ("Self-test successful");
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puts ("Self-test failed");