text: /* ssl/t1_trce.c */
  /*
   * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   * project.
   */
  /* ====================================================================
   * Copyright (c) 2012 The OpenSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    licensing@OpenSSL.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   * ====================================================================
   *
   */
  
  #include "ssl_locl.h"
  
  #ifndef OPENSSL_NO_SSL_TRACE
  
  /* Packet trace support for OpenSSL */
  
  typedef struct {
      int num;
      const char *name;
  } ssl_trace_tbl;
  
  # define ssl_trace_str(val, tbl) \
          do_ssl_trace_str(val, tbl, sizeof(tbl)/sizeof(ssl_trace_tbl))
  
  # define ssl_trace_list(bio, indent, msg, msglen, value, table) \
          do_ssl_trace_list(bio, indent, msg, msglen, value, \
           table, sizeof(table)/sizeof(ssl_trace_tbl))
  
  static const char *do_ssl_trace_str(int val, ssl_trace_tbl *tbl, size_t ntbl)
  {
      size_t i;
      for (i = 0; i < ntbl; i++, tbl++) {
          if (tbl->num == val)
              return tbl->name;
      }
      return "UNKNOWN";
  }
  
  static int do_ssl_trace_list(BIO *bio, int indent,
                               const unsigned char *msg, size_t msglen,
                               size_t vlen, ssl_trace_tbl *tbl, size_t ntbl)
  {
      int val;
      if (msglen % vlen)
          return 0;
      while (msglen) {
          val = msg[0];
          if (vlen == 2)
              val = (val << 8) | msg[1];
          BIO_indent(bio, indent, 80);
          BIO_printf(bio, "%s (%d)\n", do_ssl_trace_str(val, tbl, ntbl), val);
          msg += vlen;
          msglen -= vlen;
      }
      return 1;
  }
  
  /* Version number */
  
  static ssl_trace_tbl ssl_version_tbl[] = {
      {SSL2_VERSION, "SSL 2.0"},
      {SSL3_VERSION, "SSL 3.0"},
      {TLS1_VERSION, "TLS 1.0"},
      {TLS1_1_VERSION, "TLS 1.1"},
      {TLS1_2_VERSION, "TLS 1.2"},
      {DTLS1_VERSION, "DTLS 1.0"},
      {DTLS1_2_VERSION, "DTLS 1.2"},
      {DTLS1_BAD_VER, "DTLS 1.0 (bad)"}
  };
  
  static ssl_trace_tbl ssl_content_tbl[] = {
      {SSL3_RT_CHANGE_CIPHER_SPEC, "ChangeCipherSpec"},
      {SSL3_RT_ALERT, "Alert"},
      {SSL3_RT_HANDSHAKE, "Handshake"},
      {SSL3_RT_APPLICATION_DATA, "ApplicationData"},
      {TLS1_RT_HEARTBEAT, "HeartBeat"}
  };
  
  /* Handshake types */
  static ssl_trace_tbl ssl_handshake_tbl[] = {
      {SSL3_MT_HELLO_REQUEST, "HelloRequest"},
      {SSL3_MT_CLIENT_HELLO, "ClientHello"},
      {SSL3_MT_SERVER_HELLO, "ServerHello"},
      {DTLS1_MT_HELLO_VERIFY_REQUEST, "HelloVerifyRequest"},
      {SSL3_MT_NEWSESSION_TICKET, "NewSessionTicket"},
      {SSL3_MT_CERTIFICATE, "Certificate"},
      {SSL3_MT_SERVER_KEY_EXCHANGE, "ServerKeyExchange"},
      {SSL3_MT_CERTIFICATE_REQUEST, "CertificateRequest"},
      {SSL3_MT_CLIENT_KEY_EXCHANGE, "ClientKeyExchange"},
      {SSL3_MT_CERTIFICATE_STATUS, "CertificateStatus"},
      {SSL3_MT_SERVER_DONE, "ServerHelloDone"},
      {SSL3_MT_CERTIFICATE_VERIFY, "CertificateVerify"},
      {SSL3_MT_CLIENT_KEY_EXCHANGE, "ClientKeyExchange"},
      {SSL3_MT_FINISHED, "Finished"},
      {SSL3_MT_CERTIFICATE_STATUS, "CertificateStatus"}
  };
  
  /* Cipher suites */
  static ssl_trace_tbl ssl_ciphers_tbl[] = {
      {0x0000, "SSL_NULL_WITH_NULL_NULL"},
      {0x0001, "SSL_RSA_WITH_NULL_MD5"},
      {0x0002, "SSL_RSA_WITH_NULL_SHA"},
      {0x0003, "SSL_RSA_EXPORT_WITH_RC4_40_MD5"},
      {0x0004, "SSL_RSA_WITH_RC4_128_MD5"},
      {0x0005, "SSL_RSA_WITH_RC4_128_SHA"},
      {0x0006, "SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5"},
      {0x0007, "SSL_RSA_WITH_IDEA_CBC_SHA"},
      {0x0008, "SSL_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0009, "SSL_RSA_WITH_DES_CBC_SHA"},
      {0x000A, "SSL_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x000B, "SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA"},
      {0x000C, "SSL_DH_DSS_WITH_DES_CBC_SHA"},
      {0x000D, "SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA"},
      {0x000E, "SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x000F, "SSL_DH_RSA_WITH_DES_CBC_SHA"},
      {0x0010, "SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x0011, "SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0012, "SSL_DHE_DSS_WITH_DES_CBC_SHA"},
      {0x0013, "SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA"},
      {0x0014, "SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0015, "SSL_DHE_RSA_WITH_DES_CBC_SHA"},
      {0x0016, "SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x0017, "SSL_DH_anon_EXPORT_WITH_RC4_40_MD5"},
      {0x0018, "SSL_DH_anon_WITH_RC4_128_MD5"},
      {0x0019, "SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA"},
      {0x001A, "SSL_DH_anon_WITH_DES_CBC_SHA"},
      {0x001B, "SSL_DH_anon_WITH_3DES_EDE_CBC_SHA"},
      {0x001D, "SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA"},
      {0x001E, "SSL_FORTEZZA_KEA_WITH_RC4_128_SHA"},
      {0x001F, "TLS_KRB5_WITH_3DES_EDE_CBC_SHA"},
      {0x0020, "TLS_KRB5_WITH_RC4_128_SHA"},
      {0x0021, "TLS_KRB5_WITH_IDEA_CBC_SHA"},
      {0x0022, "TLS_KRB5_WITH_DES_CBC_MD5"},
      {0x0023, "TLS_KRB5_WITH_3DES_EDE_CBC_MD5"},
      {0x0024, "TLS_KRB5_WITH_RC4_128_MD5"},
      {0x0025, "TLS_KRB5_WITH_IDEA_CBC_MD5"},
      {0x0026, "TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA"},
      {0x0027, "TLS_KRB5_EXPORT_WITH_RC2_CBC_40_SHA"},
      {0x0028, "TLS_KRB5_EXPORT_WITH_RC4_40_SHA"},
      {0x0029, "TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5"},
      {0x002A, "TLS_KRB5_EXPORT_WITH_RC2_CBC_40_MD5"},
      {0x002B, "TLS_KRB5_EXPORT_WITH_RC4_40_MD5"},
      {0x002F, "TLS_RSA_WITH_AES_128_CBC_SHA"},
      {0x0030, "TLS_DH_DSS_WITH_AES_128_CBC_SHA"},
      {0x0031, "TLS_DH_RSA_WITH_AES_128_CBC_SHA"},
      {0x0032, "TLS_DHE_DSS_WITH_AES_128_CBC_SHA"},
      {0x0033, "TLS_DHE_RSA_WITH_AES_128_CBC_SHA"},
      {0x0034, "TLS_DH_anon_WITH_AES_128_CBC_SHA"},
      {0x0035, "TLS_RSA_WITH_AES_256_CBC_SHA"},
      {0x0036, "TLS_DH_DSS_WITH_AES_256_CBC_SHA"},
      {0x0037, "TLS_DH_RSA_WITH_AES_256_CBC_SHA"},
      {0x0038, "TLS_DHE_DSS_WITH_AES_256_CBC_SHA"},
      {0x0039, "TLS_DHE_RSA_WITH_AES_256_CBC_SHA"},
      {0x003A, "TLS_DH_anon_WITH_AES_256_CBC_SHA"},
      {0x003B, "TLS_RSA_WITH_NULL_SHA256"},
      {0x003C, "TLS_RSA_WITH_AES_128_CBC_SHA256"},
      {0x003D, "TLS_RSA_WITH_AES_256_CBC_SHA256"},
      {0x003E, "TLS_DH_DSS_WITH_AES_128_CBC_SHA256"},
      {0x003F, "TLS_DH_RSA_WITH_AES_128_CBC_SHA256"},
      {0x0040, "TLS_DHE_DSS_WITH_AES_128_CBC_SHA256"},
      {0x0041, "TLS_RSA_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0042, "TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0043, "TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0044, "TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0045, "TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0046, "TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA"},
      {0x0067, "TLS_DHE_RSA_WITH_AES_128_CBC_SHA256"},
      {0x0068, "TLS_DH_DSS_WITH_AES_256_CBC_SHA256"},
      {0x0069, "TLS_DH_RSA_WITH_AES_256_CBC_SHA256"},
      {0x006A, "TLS_DHE_DSS_WITH_AES_256_CBC_SHA256"},
      {0x006B, "TLS_DHE_RSA_WITH_AES_256_CBC_SHA256"},
      {0x006C, "TLS_DH_anon_WITH_AES_128_CBC_SHA256"},
      {0x006D, "TLS_DH_anon_WITH_AES_256_CBC_SHA256"},
      {0x0084, "TLS_RSA_WITH_CAMELLIA_256_CBC_SHA"},
      {0x0085, "TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA"},
      {0x0086, "TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA"},
      {0x0087, "TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA"},
      {0x0088, "TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA"},
      {0x0089, "TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA"},
      {0x008A, "TLS_PSK_WITH_RC4_128_SHA"},
      {0x008B, "TLS_PSK_WITH_3DES_EDE_CBC_SHA"},
      {0x008C, "TLS_PSK_WITH_AES_128_CBC_SHA"},
      {0x008D, "TLS_PSK_WITH_AES_256_CBC_SHA"},
      {0x008E, "TLS_DHE_PSK_WITH_RC4_128_SHA"},
      {0x008F, "TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA"},
      {0x0090, "TLS_DHE_PSK_WITH_AES_128_CBC_SHA"},
      {0x0091, "TLS_DHE_PSK_WITH_AES_256_CBC_SHA"},
      {0x0092, "TLS_RSA_PSK_WITH_RC4_128_SHA"},
      {0x0093, "TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA"},
      {0x0094, "TLS_RSA_PSK_WITH_AES_128_CBC_SHA"},
      {0x0095, "TLS_RSA_PSK_WITH_AES_256_CBC_SHA"},
      {0x0096, "TLS_RSA_WITH_SEED_CBC_SHA"},
      {0x0097, "TLS_DH_DSS_WITH_SEED_CBC_SHA"},
      {0x0098, "TLS_DH_RSA_WITH_SEED_CBC_SHA"},
      {0x0099, "TLS_DHE_DSS_WITH_SEED_CBC_SHA"},
      {0x009A, "TLS_DHE_RSA_WITH_SEED_CBC_SHA"},
      {0x009B, "TLS_DH_anon_WITH_SEED_CBC_SHA"},
      {0x009C, "TLS_RSA_WITH_AES_128_GCM_SHA256"},
      {0x009D, "TLS_RSA_WITH_AES_256_GCM_SHA384"},
      {0x009E, "TLS_DHE_RSA_WITH_AES_128_GCM_SHA256"},
      {0x009F, "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384"},
      {0x00A0, "TLS_DH_RSA_WITH_AES_128_GCM_SHA256"},
      {0x00A1, "TLS_DH_RSA_WITH_AES_256_GCM_SHA384"},
      {0x00A2, "TLS_DHE_DSS_WITH_AES_128_GCM_SHA256"},
      {0x00A3, "TLS_DHE_DSS_WITH_AES_256_GCM_SHA384"},
      {0x00A4, "TLS_DH_DSS_WITH_AES_128_GCM_SHA256"},
      {0x00A5, "TLS_DH_DSS_WITH_AES_256_GCM_SHA384"},
      {0x00A6, "TLS_DH_anon_WITH_AES_128_GCM_SHA256"},
      {0x00A7, "TLS_DH_anon_WITH_AES_256_GCM_SHA384"},
      {0x00A8, "TLS_PSK_WITH_AES_128_GCM_SHA256"},
      {0x00A9, "TLS_PSK_WITH_AES_256_GCM_SHA384"},
      {0x00AA, "TLS_DHE_PSK_WITH_AES_128_GCM_SHA256"},
      {0x00AB, "TLS_DHE_PSK_WITH_AES_256_GCM_SHA384"},
      {0x00AC, "TLS_RSA_PSK_WITH_AES_128_GCM_SHA256"},
      {0x00AD, "TLS_RSA_PSK_WITH_AES_256_GCM_SHA384"},
      {0x00AE, "TLS_PSK_WITH_AES_128_CBC_SHA256"},
      {0x00AF, "TLS_PSK_WITH_AES_256_CBC_SHA384"},
      {0x00B0, "TLS_PSK_WITH_NULL_SHA256"},
      {0x00B1, "TLS_PSK_WITH_NULL_SHA384"},
      {0x00B2, "TLS_DHE_PSK_WITH_AES_128_CBC_SHA256"},
      {0x00B3, "TLS_DHE_PSK_WITH_AES_256_CBC_SHA384"},
      {0x00B4, "TLS_DHE_PSK_WITH_NULL_SHA256"},
      {0x00B5, "TLS_DHE_PSK_WITH_NULL_SHA384"},
      {0x00B6, "TLS_RSA_PSK_WITH_AES_128_CBC_SHA256"},
      {0x00B7, "TLS_RSA_PSK_WITH_AES_256_CBC_SHA384"},
      {0x00B8, "TLS_RSA_PSK_WITH_NULL_SHA256"},
      {0x00B9, "TLS_RSA_PSK_WITH_NULL_SHA384"},
      {0x00BA, "TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00BB, "TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00BC, "TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00BD, "TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00BE, "TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00BF, "TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256"},
      {0x00C0, "TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00C1, "TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00C2, "TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00C3, "TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00C4, "TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00C5, "TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256"},
      {0x00FF, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV"},
      {0xC001, "TLS_ECDH_ECDSA_WITH_NULL_SHA"},
      {0xC002, "TLS_ECDH_ECDSA_WITH_RC4_128_SHA"},
      {0xC003, "TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA"},
      {0xC004, "TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA"},
      {0xC005, "TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA"},
      {0xC006, "TLS_ECDHE_ECDSA_WITH_NULL_SHA"},
      {0xC007, "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA"},
      {0xC008, "TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA"},
      {0xC009, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA"},
      {0xC00A, "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA"},
      {0xC00B, "TLS_ECDH_RSA_WITH_NULL_SHA"},
      {0xC00C, "TLS_ECDH_RSA_WITH_RC4_128_SHA"},
      {0xC00D, "TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0xC00E, "TLS_ECDH_RSA_WITH_AES_128_CBC_SHA"},
      {0xC00F, "TLS_ECDH_RSA_WITH_AES_256_CBC_SHA"},
      {0xC010, "TLS_ECDHE_RSA_WITH_NULL_SHA"},
      {0xC011, "TLS_ECDHE_RSA_WITH_RC4_128_SHA"},
      {0xC012, "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0xC013, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA"},
      {0xC014, "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA"},
      {0xC015, "TLS_ECDH_anon_WITH_NULL_SHA"},
      {0xC016, "TLS_ECDH_anon_WITH_RC4_128_SHA"},
      {0xC017, "TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA"},
      {0xC018, "TLS_ECDH_anon_WITH_AES_128_CBC_SHA"},
      {0xC019, "TLS_ECDH_anon_WITH_AES_256_CBC_SHA"},
      {0xC01A, "TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA"},
      {0xC01B, "TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0xC01C, "TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA"},
      {0xC01D, "TLS_SRP_SHA_WITH_AES_128_CBC_SHA"},
      {0xC01E, "TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA"},
      {0xC01F, "TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA"},
      {0xC020, "TLS_SRP_SHA_WITH_AES_256_CBC_SHA"},
      {0xC021, "TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA"},
      {0xC022, "TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA"},
      {0xC023, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256"},
      {0xC024, "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384"},
      {0xC025, "TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256"},
      {0xC026, "TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384"},
      {0xC027, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256"},
      {0xC028, "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"},
      {0xC029, "TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256"},
      {0xC02A, "TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384"},
      {0xC02B, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"},
      {0xC02C, "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384"},
      {0xC02D, "TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256"},
      {0xC02E, "TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384"},
      {0xC02F, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256"},
      {0xC030, "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384"},
      {0xC031, "TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256"},
      {0xC032, "TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384"},
      {0xC072, "TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC073, "TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC074, "TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC075, "TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC076, "TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC077, "TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC078, "TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC079, "TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xFEFE, "SSL_RSA_FIPS_WITH_DES_CBC_SHA"},
      {0xFEFF, "SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA"},
  };
  
  /* Compression methods */
  static ssl_trace_tbl ssl_comp_tbl[] = {
      {0x0000, "No Compression"},
      {0x0001, "Zlib Compression"}
  };
  
  /* Extensions */
  static ssl_trace_tbl ssl_exts_tbl[] = {
      {TLSEXT_TYPE_server_name, "server_name"},
      {TLSEXT_TYPE_max_fragment_length, "max_fragment_length"},
      {TLSEXT_TYPE_client_certificate_url, "client_certificate_url"},
      {TLSEXT_TYPE_trusted_ca_keys, "trusted_ca_keys"},
      {TLSEXT_TYPE_truncated_hmac, "truncated_hmac"},
      {TLSEXT_TYPE_status_request, "status_request"},
      {TLSEXT_TYPE_user_mapping, "user_mapping"},
      {TLSEXT_TYPE_client_authz, "client_authz"},
      {TLSEXT_TYPE_server_authz, "server_authz"},
      {TLSEXT_TYPE_cert_type, "cert_type"},
      {TLSEXT_TYPE_elliptic_curves, "elliptic_curves"},
      {TLSEXT_TYPE_ec_point_formats, "ec_point_formats"},
      {TLSEXT_TYPE_srp, "srp"},
      {TLSEXT_TYPE_signature_algorithms, "signature_algorithms"},
      {TLSEXT_TYPE_use_srtp, "use_srtp"},
      {TLSEXT_TYPE_heartbeat, "heartbeat"},
      {TLSEXT_TYPE_session_ticket, "session_ticket"},
  # ifdef TLSEXT_TYPE_opaque_prf_input
      {TLSEXT_TYPE_opaque_prf_input, "opaque_prf_input"},
  # endif
      {TLSEXT_TYPE_renegotiate, "renegotiate"},
      {TLSEXT_TYPE_next_proto_neg, "next_proto_neg"},
      {TLSEXT_TYPE_padding, "padding"}
  };
  
  static ssl_trace_tbl ssl_curve_tbl[] = {
      {1, "sect163k1 (K-163)"},
      {2, "sect163r1"},
      {3, "sect163r2 (B-163)"},
      {4, "sect193r1"},
      {5, "sect193r2"},
      {6, "sect233k1 (K-233)"},
      {7, "sect233r1 (B-233)"},
      {8, "sect239k1"},
      {9, "sect283k1 (K-283)"},
      {10, "sect283r1 (B-283)"},
      {11, "sect409k1 (K-409)"},
      {12, "sect409r1 (B-409)"},
      {13, "sect571k1 (K-571)"},
      {14, "sect571r1 (B-571)"},
      {15, "secp160k1"},
      {16, "secp160r1"},
      {17, "secp160r2"},
      {18, "secp192k1"},
      {19, "secp192r1 (P-192)"},
      {20, "secp224k1"},
      {21, "secp224r1 (P-224)"},
      {22, "secp256k1"},
      {23, "secp256r1 (P-256)"},
      {24, "secp384r1 (P-384)"},
      {25, "secp521r1 (P-521)"},
      {26, "brainpoolP256r1"},
      {27, "brainpoolP384r1"},
      {28, "brainpoolP512r1"},
      {0xFF01, "arbitrary_explicit_prime_curves"},
      {0xFF02, "arbitrary_explicit_char2_curves"}
  };
  
  static ssl_trace_tbl ssl_point_tbl[] = {
      {0, "uncompressed"},
      {1, "ansiX962_compressed_prime"},
      {2, "ansiX962_compressed_char2"}
  };
  
  static ssl_trace_tbl ssl_md_tbl[] = {
      {0, "none"},
      {1, "md5"},
      {2, "sha1"},
      {3, "sha224"},
      {4, "sha256"},
      {5, "sha384"},
      {6, "sha512"}
  };
  
  static ssl_trace_tbl ssl_sig_tbl[] = {
      {0, "anonymous"},
      {1, "rsa"},
      {2, "dsa"},
      {3, "ecdsa"}
  };
  
  static ssl_trace_tbl ssl_hb_tbl[] = {
      {1, "peer_allowed_to_send"},
      {2, "peer_not_allowed_to_send"}
  };
  
  static ssl_trace_tbl ssl_hb_type_tbl[] = {
      {1, "heartbeat_request"},
      {2, "heartbeat_response"}
  };
  
  static ssl_trace_tbl ssl_ctype_tbl[] = {
      {1, "rsa_sign"},
      {2, "dss_sign"},
      {3, "rsa_fixed_dh"},
      {4, "dss_fixed_dh"},
      {5, "rsa_ephemeral_dh"},
      {6, "dss_ephemeral_dh"},
      {20, "fortezza_dms"},
      {64, "ecdsa_sign"},
      {65, "rsa_fixed_ecdh"},
      {66, "ecdsa_fixed_ecdh"}
  };
  
  static ssl_trace_tbl ssl_crypto_tbl[] = {
      {TLS1_RT_CRYPTO_PREMASTER, "Premaster Secret"},
      {TLS1_RT_CRYPTO_CLIENT_RANDOM, "Client Random"},
      {TLS1_RT_CRYPTO_SERVER_RANDOM, "Server Random"},
      {TLS1_RT_CRYPTO_MASTER, "Master Secret"},
      {TLS1_RT_CRYPTO_MAC | TLS1_RT_CRYPTO_WRITE, "Write Mac Secret"},
      {TLS1_RT_CRYPTO_MAC | TLS1_RT_CRYPTO_READ, "Read Mac Secret"},
      {TLS1_RT_CRYPTO_KEY | TLS1_RT_CRYPTO_WRITE, "Write Key"},
      {TLS1_RT_CRYPTO_KEY | TLS1_RT_CRYPTO_READ, "Read Key"},
      {TLS1_RT_CRYPTO_IV | TLS1_RT_CRYPTO_WRITE, "Write IV"},
      {TLS1_RT_CRYPTO_IV | TLS1_RT_CRYPTO_READ, "Read IV"},
      {TLS1_RT_CRYPTO_FIXED_IV | TLS1_RT_CRYPTO_WRITE, "Write IV (fixed part)"},
      {TLS1_RT_CRYPTO_FIXED_IV | TLS1_RT_CRYPTO_READ, "Read IV (fixed part)"}
  };
  
  static void ssl_print_hex(BIO *bio, int indent, const char *name,
                            const unsigned char *msg, size_t msglen)
  {
      size_t i;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "%s (len=%d): ", name, (int)msglen);
      for (i = 0; i < msglen; i++)
          BIO_printf(bio, "%02X", msg[i]);
      BIO_puts(bio, "\n");
  }
  
  static int ssl_print_hexbuf(BIO *bio, int indent,
                              const char *name, size_t nlen,
                              const unsigned char **pmsg, size_t *pmsglen)
  {
      size_t blen;
      const unsigned char *p = *pmsg;
      if (*pmsglen < nlen)
          return 0;
      blen = p[0];
      if (nlen > 1)
          blen = (blen << 8) | p[1];
      if (*pmsglen < nlen + blen)
          return 0;
      p += nlen;
      ssl_print_hex(bio, indent, name, p, blen);
      *pmsg += blen + nlen;
      *pmsglen -= blen + nlen;
      return 1;
  }
  
  static int ssl_print_version(BIO *bio, int indent, const char *name,
                               const unsigned char **pmsg, size_t *pmsglen)
  {
      int vers;
      if (*pmsglen < 2)
          return 0;
      vers = ((*pmsg)[0] << 8) | (*pmsg)[1];
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "%s=0x%x (%s)\n",
                 name, vers, ssl_trace_str(vers, ssl_version_tbl));
      *pmsg += 2;
      *pmsglen -= 2;
      return 1;
  }
  
  static int ssl_print_random(BIO *bio, int indent,
                              const unsigned char **pmsg, size_t *pmsglen)
  {
      unsigned int tm;
      const unsigned char *p = *pmsg;
      if (*pmsglen < 32)
          return 0;
      tm = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
      p += 4;
      BIO_indent(bio, indent, 80);
      BIO_puts(bio, "Random:\n");
      BIO_indent(bio, indent + 2, 80);
      BIO_printf(bio, "gmt_unix_time=0x%08X\n", tm);
      ssl_print_hex(bio, indent + 2, "random_bytes", p, 28);
      *pmsg += 32;
      *pmsglen -= 32;
      return 1;
  }
  
  static int ssl_print_signature(BIO *bio, int indent, SSL *s,
                                 const unsigned char **pmsg, size_t *pmsglen)
  {
      if (*pmsglen < 2)
          return 0;
      if (SSL_USE_SIGALGS(s)) {
          const unsigned char *p = *pmsg;
          BIO_indent(bio, indent, 80);
          BIO_printf(bio, "Signature Algorithm %s+%s (%d+%d)\n",
                     ssl_trace_str(p[0], ssl_md_tbl),
                     ssl_trace_str(p[1], ssl_sig_tbl), p[0], p[1]);
          *pmsg += 2;
          *pmsglen -= 2;
      }
      return ssl_print_hexbuf(bio, indent, "Signature", 2, pmsg, pmsglen);
  }
  
  static int ssl_print_extension(BIO *bio, int indent, int server, int extype,
                                 const unsigned char *ext, size_t extlen)
  {
      size_t xlen;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "extension_type=%s(%d), length=%d\n",
                 ssl_trace_str(extype, ssl_exts_tbl), extype, (int)extlen);
      switch (extype) {
      case TLSEXT_TYPE_ec_point_formats:
          if (extlen < 1)
              return 0;
          xlen = ext[0];
          if (extlen != xlen + 1)
              return 0;
          return ssl_trace_list(bio, indent + 2,
                                ext + 1, xlen, 1, ssl_point_tbl);
  
      case TLSEXT_TYPE_elliptic_curves:
          if (extlen < 2)
              return 0;
          xlen = (ext[0] << 8) | ext[1];
          if (extlen != xlen + 2)
              return 0;
          return ssl_trace_list(bio, indent + 2,
                                ext + 2, xlen, 2, ssl_curve_tbl);
  
      case TLSEXT_TYPE_signature_algorithms:
  
          if (extlen < 2)
              return 0;
          xlen = (ext[0] << 8) | ext[1];
          if (extlen != xlen + 2)
              return 0;
          if (xlen & 1)
              return 0;
          ext += 2;
          while (xlen > 0) {
              BIO_indent(bio, indent + 2, 80);
              BIO_printf(bio, "%s+%s (%d+%d)\n",
                         ssl_trace_str(ext[0], ssl_md_tbl),
                         ssl_trace_str(ext[1], ssl_sig_tbl), ext[0], ext[1]);
              xlen -= 2;
              ext += 2;
          }
          break;
  
      case TLSEXT_TYPE_renegotiate:
          if (extlen < 1)
              return 0;
          xlen = ext[0];
          if (xlen + 1 != extlen)
              return 0;
          ext++;
          if (xlen) {
              if (server) {
                  if (xlen & 1)
                      return 0;
                  xlen >>= 1;
              }
              ssl_print_hex(bio, indent + 4, "client_verify_data", ext, xlen);
              if (server) {
                  ext += xlen;
                  ssl_print_hex(bio, indent + 4,
                                "server_verify_data", ext, xlen);
              }
          } else {
              BIO_indent(bio, indent + 4, 80);
              BIO_puts(bio, "<EMPTY>\n");
          }
          break;
  
      case TLSEXT_TYPE_heartbeat:
          if (extlen != 1)
              return 0;
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "HeartbeatMode: %s\n",
                     ssl_trace_str(ext[0], ssl_hb_tbl));
          break;
  
      case TLSEXT_TYPE_session_ticket:
          if (extlen != 0)
              ssl_print_hex(bio, indent + 4, "ticket", ext, extlen);
          break;
  
      default:
          BIO_dump_indent(bio, (char *)ext, extlen, indent + 2);
      }
      return 1;
  }
  
  static int ssl_print_extensions(BIO *bio, int indent, int server,
                                  const unsigned char *msg, size_t msglen)
  {
      size_t extslen;
      BIO_indent(bio, indent, 80);
      if (msglen == 0) {
          BIO_puts(bio, "No Extensions\n");
          return 1;
      }
      extslen = (msg[0] << 8) | msg[1];
      if (extslen != msglen - 2)
          return 0;
      msg += 2;
      msglen = extslen;
      BIO_printf(bio, "extensions, length = %d\n", (int)msglen);
      while (msglen > 0) {
          int extype;
          size_t extlen;
          if (msglen < 4)
              return 0;
          extype = (msg[0] << 8) | msg[1];
          extlen = (msg[2] << 8) | msg[3];
          if (msglen < extlen + 4)
              return 0;
          msg += 4;
          if (!ssl_print_extension(bio, indent + 2, server,
                                   extype, msg, extlen))
              return 0;
          msg += extlen;
          msglen -= extlen + 4;
      }
      return 1;
  }
  
  static int ssl_print_client_hello(BIO *bio, SSL *ssl, int indent,
                                    const unsigned char *msg, size_t msglen)
  {
      size_t len;
      unsigned int cs;
      if (!ssl_print_version(bio, indent, "client_version", &msg, &msglen))
          return 0;
      if (!ssl_print_random(bio, indent, &msg, &msglen))
          return 0;
      if (!ssl_print_hexbuf(bio, indent, "session_id", 1, &msg, &msglen))
          return 0;
      if (SSL_IS_DTLS(ssl)) {
          if (!ssl_print_hexbuf(bio, indent, "cookie", 1, &msg, &msglen))
              return 0;
      }
      if (msglen < 2)
          return 0;
      len = (msg[0] << 8) | msg[1];
      msg += 2;
      msglen -= 2;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "cipher_suites (len=%d)\n", (int)len);
      if (msglen < len || len & 1)
          return 0;
      while (len > 0) {
          cs = (msg[0] << 8) | msg[1];
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "{0x%02X, 0x%02X} %s\n",
                     msg[0], msg[1], ssl_trace_str(cs, ssl_ciphers_tbl));
          msg += 2;
          msglen -= 2;
          len -= 2;
      }
      if (msglen < 1)
          return 0;
      len = msg[0];
      msg++;
      msglen--;
      if (msglen < len)
          return 0;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "compression_methods (len=%d)\n", (int)len);
      while (len > 0) {
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "%s (0x%02X)\n",
                     ssl_trace_str(msg[0], ssl_comp_tbl), msg[0]);
          msg++;
          msglen--;
          len--;
      }
      if (!ssl_print_extensions(bio, indent, 0, msg, msglen))
          return 0;
      return 1;
  }
  
  static int dtls_print_hello_vfyrequest(BIO *bio, int indent,
                                         const unsigned char *msg,
                                         size_t msglen)
  {
      if (!ssl_print_version(bio, indent, "server_version", &msg, &msglen))
          return 0;
      if (!ssl_print_hexbuf(bio, indent, "cookie", 1, &msg, &msglen))
          return 0;
      return 1;
  }
  
  static int ssl_print_server_hello(BIO *bio, int indent,
                                    const unsigned char *msg, size_t msglen)
  {
      unsigned int cs;
      if (!ssl_print_version(bio, indent, "server_version", &msg, &msglen))
          return 0;
      if (!ssl_print_random(bio, indent, &msg, &msglen))
          return 0;
      if (!ssl_print_hexbuf(bio, indent, "session_id", 1, &msg, &msglen))
          return 0;
      if (msglen < 2)
          return 0;
      cs = (msg[0] << 8) | msg[1];
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "cipher_suite {0x%02X, 0x%02X} %s\n",
                 msg[0], msg[1], ssl_trace_str(cs, ssl_ciphers_tbl));
      msg += 2;
      msglen -= 2;
      if (msglen < 1)
          return 0;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "compression_method: %s (0x%02X)\n",
                 ssl_trace_str(msg[0], ssl_comp_tbl), msg[0]);
      msg++;
      msglen--;
      if (!ssl_print_extensions(bio, indent, 1, msg, msglen))
          return 0;
      return 1;
  }
  
  static int ssl_get_keyex(const char **pname, SSL *ssl)
  {
      unsigned long alg_k = ssl->s3->tmp.new_cipher->algorithm_mkey;
      if (alg_k & SSL_kRSA) {
          *pname = "rsa";
          return SSL_kRSA;
      }
      if (alg_k & SSL_kDHr) {
          *pname = "dh_rsa";
          return SSL_kDHr;
      }
      if (alg_k & SSL_kDHd) {
          *pname = "dh_dss";
          return SSL_kDHd;
      }
      if (alg_k & SSL_kKRB5) {
          *pname = "krb5";
          return SSL_kKRB5;
      }
      if (alg_k & SSL_kEDH) {
          *pname = "edh";
          return SSL_kEDH;
      }
      if (alg_k & SSL_kEECDH) {
          *pname = "EECDH";
          return SSL_kEECDH;
      }
      if (alg_k & SSL_kECDHr) {
          *pname = "ECDH RSA";
          return SSL_kECDHr;
      }
      if (alg_k & SSL_kECDHe) {
          *pname = "ECDH ECDSA";
          return SSL_kECDHe;
      }
      if (alg_k & SSL_kPSK) {
          *pname = "PSK";
          return SSL_kPSK;
      }
      if (alg_k & SSL_kSRP) {
          *pname = "SRP";
          return SSL_kSRP;
      }
      if (alg_k & SSL_kGOST) {
          *pname = "GOST";
          return SSL_kGOST;
      }
      *pname = "UNKNOWN";
      return 0;
  }
  
  static int ssl_print_client_keyex(BIO *bio, int indent, SSL *ssl,
                                    const unsigned char *msg, size_t msglen)
  {
      const char *algname;
      int id;
      id = ssl_get_keyex(&algname, ssl);
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "KeyExchangeAlgorithm=%s\n", algname);
      switch (id) {
  
      case SSL_kRSA:
          if (TLS1_get_version(ssl) == SSL3_VERSION) {
              ssl_print_hex(bio, indent + 2,
                            "EncyptedPreMasterSecret", msg, msglen);
          } else {
              if (!ssl_print_hexbuf(bio, indent + 2,
                                    "EncyptedPreMasterSecret", 2,
                                    &msg, &msglen))
                  return 0;
          }
          break;
  
          /* Implicit parameters only allowed for static DH */
      case SSL_kDHd:
      case SSL_kDHr:
          if (msglen == 0) {
              BIO_indent(bio, indent + 2, 80);
              BIO_puts(bio, "implicit\n");
              break;
          }
      case SSL_kEDH:
          if (!ssl_print_hexbuf(bio, indent + 2, "dh_Yc", 2, &msg, &msglen))
              return 0;
          break;
  
      case SSL_kECDHr:
      case SSL_kECDHe:
          if (msglen == 0) {
              BIO_indent(bio, indent + 2, 80);
              BIO_puts(bio, "implicit\n");
              break;
          }
      case SSL_kEECDH:
          if (!ssl_print_hexbuf(bio, indent + 2, "ecdh_Yc", 1, &msg, &msglen))
              return 0;
          break;
      }
  
      return 1;
  }
  
  static int ssl_print_server_keyex(BIO *bio, int indent, SSL *ssl,
                                    const unsigned char *msg, size_t msglen)
  {
      const char *algname;
      int id;
      id = ssl_get_keyex(&algname, ssl);
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "KeyExchangeAlgorithm=%s\n", algname);
      switch (id) {
          /* Should never happen */
      case SSL_kDHd:
      case SSL_kDHr:
      case SSL_kECDHr:
      case SSL_kECDHe:
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "Unexpected Message\n");
          break;
  
      case SSL_kRSA:
  
          if (!ssl_print_hexbuf(bio, indent + 2, "rsa_modulus", 2,
                                &msg, &msglen))
              return 0;
          if (!ssl_print_hexbuf(bio, indent + 2, "rsa_exponent", 2,
                                &msg, &msglen))
              return 0;
          break;
  
      case SSL_kEDH:
          if (!ssl_print_hexbuf(bio, indent + 2, "dh_p", 2, &msg, &msglen))
              return 0;
          if (!ssl_print_hexbuf(bio, indent + 2, "dh_g", 2, &msg, &msglen))
              return 0;
          if (!ssl_print_hexbuf(bio, indent + 2, "dh_Ys", 2, &msg, &msglen))
              return 0;
          break;
  
      case SSL_kEECDH:
          if (msglen < 1)
              return 0;
          BIO_indent(bio, indent + 2, 80);
          if (msg[0] == EXPLICIT_PRIME_CURVE_TYPE)
              BIO_puts(bio, "explicit_prime\n");
          else if (msg[0] == EXPLICIT_CHAR2_CURVE_TYPE)
              BIO_puts(bio, "explicit_char2\n");
          else if (msg[0] == NAMED_CURVE_TYPE) {
              int curve;
              if (msglen < 3)
                  return 0;
              curve = (msg[1] << 8) | msg[2];
              BIO_printf(bio, "named_curve: %s (%d)\n",
                         ssl_trace_str(curve, ssl_curve_tbl), curve);
              msg += 3;
              msglen -= 3;
              if (!ssl_print_hexbuf(bio, indent + 2, "point", 1, &msg, &msglen))
                  return 0;
          }
          break;
      }
      return ssl_print_signature(bio, indent, ssl, &msg, &msglen);
  }
  
  static int ssl_print_certificate(BIO *bio, int indent,
                                   const unsigned char **pmsg, size_t *pmsglen)
  {
      size_t msglen = *pmsglen;
      size_t clen;
      X509 *x;
      const unsigned char *p = *pmsg, *q;
      if (msglen < 3)
          return 0;
      clen = (p[0] << 16) | (p[1] << 8) | p[2];
      if (msglen < clen + 3)
          return 0;
      q = p + 3;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "ASN.1Cert, length=%d", (int)clen);
      x = d2i_X509(NULL, &q, clen);
      if (!x)
          BIO_puts(bio, "<UNPARSEABLE CERTIFICATE>\n");
      else {
          BIO_puts(bio, "\n------details-----\n");
          X509_print_ex(bio, x, XN_FLAG_ONELINE, 0);
          PEM_write_bio_X509(bio, x);
          /* Print certificate stuff */
          BIO_puts(bio, "------------------\n");
          X509_free(x);
      }
      if (q != p + 3 + clen) {
          BIO_puts(bio, "<TRAILING GARBAGE AFTER CERTIFICATE>\n");
      }
      *pmsg += clen + 3;
      *pmsglen -= clen + 3;
      return 1;
  }
  
  static int ssl_print_certificates(BIO *bio, int indent,
                                    const unsigned char *msg, size_t msglen)
  {
      size_t clen;
      if (msglen < 3)
          return 0;
      clen = (msg[0] << 16) | (msg[1] << 8) | msg[2];
      if (msglen != clen + 3)
          return 0;
      msg += 3;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "certificate_list, length=%d\n", (int)clen);
      while (clen > 0) {
          if (!ssl_print_certificate(bio, indent + 2, &msg, &clen))
              return 0;
      }
      return 1;
  }
  
  static int ssl_print_cert_request(BIO *bio, int indent, SSL *s,
                                    const unsigned char *msg, size_t msglen)
  {
      size_t xlen;
      if (msglen < 1)
          return 0;
      xlen = msg[0];
      if (msglen < xlen + 1)
          return 0;
      msg++;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "certificate_types (len=%d)\n", (int)xlen);
      if (!ssl_trace_list(bio, indent + 2, msg, xlen, 1, ssl_ctype_tbl))
          return 0;
      msg += xlen;
      msglen -= xlen + 1;
      if (!SSL_USE_SIGALGS(s))
          goto skip_sig;
      if (msglen < 2)
          return 0;
      xlen = (msg[0] << 8) | msg[1];
      if (msglen < xlen + 2 || (xlen & 1))
          return 0;
      msg += 2;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "signature_algorithms (len=%d)\n", (int)xlen);
      while (xlen > 0) {
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "%s+%s (%d+%d)\n",
                     ssl_trace_str(msg[0], ssl_md_tbl),
                     ssl_trace_str(msg[1], ssl_sig_tbl), msg[0], msg[1]);
          xlen -= 2;
          msg += 2;
      }
      msg += xlen;
      msglen -= xlen + 2;
  
   skip_sig:
      xlen = (msg[0] << 8) | msg[1];
      BIO_indent(bio, indent, 80);
      if (msglen < xlen + 2)
          return 0;
      msg += 2;
      msglen -= 2;
      BIO_printf(bio, "certificate_authorities (len=%d)\n", (int)xlen);
      while (xlen > 0) {
          size_t dlen;
          X509_NAME *nm;
          const unsigned char *p;
          if (xlen < 2)
              return 0;
          dlen = (msg[0] << 8) | msg[1];
          if (xlen < dlen + 2)
              return 0;
          msg += 2;
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "DistinguishedName (len=%d): ", (int)dlen);
          p = msg;
          nm = d2i_X509_NAME(NULL, &p, dlen);
          if (!nm) {
              BIO_puts(bio, "<UNPARSEABLE DN>\n");
          } else {
              X509_NAME_print_ex(bio, nm, 0, XN_FLAG_ONELINE);
              BIO_puts(bio, "\n");
              X509_NAME_free(nm);
          }
          xlen -= dlen + 2;
          msg += dlen;
      }
      return 1;
  }
  
  static int ssl_print_ticket(BIO *bio, int indent,
                              const unsigned char *msg, size_t msglen)
  {
      unsigned int tick_life;
      if (msglen == 0) {
          BIO_indent(bio, indent + 2, 80);
          BIO_puts(bio, "No Ticket\n");
          return 1;
      }
      if (msglen < 4)
          return 0;
      tick_life = (msg[0] << 24) | (msg[1] << 16) | (msg[2] << 8) | msg[3];
      msglen -= 4;
      msg += 4;
      BIO_indent(bio, indent + 2, 80);
      BIO_printf(bio, "ticket_lifetime_hint=%u\n", tick_life);
      if (!ssl_print_hexbuf(bio, indent + 2, "ticket", 2, &msg, &msglen))
          return 0;
      if (msglen)
          return 0;
      return 1;
  }
  
  static int ssl_print_handshake(BIO *bio, SSL *ssl,
                                 const unsigned char *msg, size_t msglen,
                                 int indent)
  {
      size_t hlen;
      unsigned char htype;
      if (msglen < 4)
          return 0;
      htype = msg[0];
      hlen = (msg[1] << 16) | (msg[2] << 8) | msg[3];
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "%s, Length=%d\n",
                 ssl_trace_str(htype, ssl_handshake_tbl), (int)hlen);
      msg += 4;
      msglen -= 4;
      if (SSL_IS_DTLS(ssl)) {
          if (msglen < 8)
              return 0;
          BIO_indent(bio, indent, 80);
          BIO_printf(bio, "message_seq=%d, fragment_offset=%d, "
                     "fragment_length=%d\n",
                     (msg[0] << 8) | msg[1],
                     (msg[2] << 16) | (msg[3] << 8) | msg[4],
                     (msg[5] << 16) | (msg[6] << 8) | msg[7]);
          msg += 8;
          msglen -= 8;
      }
      if (msglen < hlen)
          return 0;
      switch (htype) {
      case SSL3_MT_CLIENT_HELLO:
          if (!ssl_print_client_hello(bio, ssl, indent + 2, msg, msglen))
              return 0;
          break;
  
      case DTLS1_MT_HELLO_VERIFY_REQUEST:
          if (!dtls_print_hello_vfyrequest(bio, indent + 2, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_SERVER_HELLO:
          if (!ssl_print_server_hello(bio, indent + 2, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_SERVER_KEY_EXCHANGE:
          if (!ssl_print_server_keyex(bio, indent + 2, ssl, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_CLIENT_KEY_EXCHANGE:
          if (!ssl_print_client_keyex(bio, indent + 2, ssl, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_CERTIFICATE:
          if (!ssl_print_certificates(bio, indent + 2, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_CERTIFICATE_VERIFY:
          if (!ssl_print_signature(bio, indent + 2, ssl, &msg, &msglen))
              return 0;
          break;
  
      case SSL3_MT_CERTIFICATE_REQUEST:
          if (!ssl_print_cert_request(bio, indent + 2, ssl, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_FINISHED:
          ssl_print_hex(bio, indent + 2, "verify_data", msg, msglen);
          break;
  
      case SSL3_MT_SERVER_DONE:
          if (msglen != 0)
              ssl_print_hex(bio, indent + 2, "unexpected value", msg, msglen);
          break;
  
      case SSL3_MT_NEWSESSION_TICKET:
          if (!ssl_print_ticket(bio, indent + 2, msg, msglen))
              return 0;
          break;
  
      default:
          BIO_indent(bio, indent + 2, 80);
          BIO_puts(bio, "Unsupported, hex dump follows:\n");
          BIO_dump_indent(bio, (char *)msg, msglen, indent + 4);
      }
      return 1;
  }
  
  static int ssl_print_heartbeat(BIO *bio, int indent,
                                 const unsigned char *msg, size_t msglen)
  {
      if (msglen < 3)
          return 0;
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "HeartBeatMessageType: %s\n",
                 ssl_trace_str(msg[0], ssl_hb_type_tbl));
      msg++;
      msglen--;
      if (!ssl_print_hexbuf(bio, indent, "payload", 2, &msg, &msglen))
          return 0;
      ssl_print_hex(bio, indent, "padding", msg, msglen);
      return 1;
  }
  
  const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c)
  {
      if (c->algorithm_ssl & SSL_SSLV2)
          return NULL;
      return ssl_trace_str(c->id & 0xFFFF, ssl_ciphers_tbl);
  }
  
  void SSL_trace(int write_p, int version, int content_type,
                 const void *buf, size_t msglen, SSL *ssl, void *arg)
  {
      const unsigned char *msg = buf;
      BIO *bio = arg;
  
      if (write_p == 2) {
          BIO_puts(bio, "Session ");
          ssl_print_hex(bio, 0,
                        ssl_trace_str(content_type, ssl_crypto_tbl),
                        msg, msglen);
          return;
      }
      switch (content_type) {
      case SSL3_RT_HEADER:
          {
              int hvers = msg[1] << 8 | msg[2];
              BIO_puts(bio, write_p ? "Sent" : "Received");
              BIO_printf(bio, " Record\nHeader:\n  Version = %s (0x%x)\n",
                         ssl_trace_str(hvers, ssl_version_tbl), hvers);
              if (SSL_IS_DTLS(ssl)) {
                  BIO_printf(bio,
                             "  epoch=%d, sequence_number=%04x%04x%04x\n",
                             (msg[3] << 8 | msg[4]),
                             (msg[5] << 8 | msg[6]),
                             (msg[7] << 8 | msg[8]), (msg[9] << 8 | msg[10]));
  # if 0
                  /*
                   * Just print handshake type so we can see what is going on
                   * during fragmentation.
                   */
                  BIO_printf(bio, "(%s)\n",
                             ssl_trace_str(msg[msglen], ssl_handshake_tbl));
  # endif
              }
  
              BIO_printf(bio, "  Content Type = %s (%d)\n  Length = %d",
                         ssl_trace_str(msg[0], ssl_content_tbl), msg[0],
                         msg[msglen - 2] << 8 | msg[msglen - 1]);
          }
          break;
      case SSL3_RT_HANDSHAKE:
          if (!ssl_print_handshake(bio, ssl, msg, msglen, 4))
              BIO_printf(bio, "Message length parse error!\n");
          break;
  
      case SSL3_RT_CHANGE_CIPHER_SPEC:
          if (msglen == 1 && msg[0] == 1)
              BIO_puts(bio, "    change_cipher_spec (1)\n");
          else
              ssl_print_hex(bio, 4, "unknown value", msg, msglen);
          break;
  
      case SSL3_RT_ALERT:
          if (msglen != 2)
              BIO_puts(bio, "    Illegal Alert Length\n");
          else {
              BIO_printf(bio, "    Level=%s(%d), description=%s(%d)\n",
                         SSL_alert_type_string_long(msg[0] << 8),
                         msg[0], SSL_alert_desc_string_long(msg[1]), msg[1]);
          }
      case TLS1_RT_HEARTBEAT:
          ssl_print_heartbeat(bio, 4, msg, msglen);
          break;
  
      }
  
      BIO_puts(bio, "\n");
  }
  
  #endif
  