text: /*
   * Copyright 2012-2018 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the OpenSSL license (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #include "ssl_local.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, OSSL_NELEM(tbl))
  
  # define ssl_trace_list(bio, indent, msg, msglen, value, table) \
      do_ssl_trace_list(bio, indent, msg, msglen, value, \
                        table, OSSL_NELEM(table))
  
  static const char *do_ssl_trace_str(int val, const 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, const 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 const ssl_trace_tbl ssl_version_tbl[] = {
      {SSL3_VERSION, "SSL 3.0"},
      {TLS1_VERSION, "TLS 1.0"},
      {TLS1_1_VERSION, "TLS 1.1"},
      {TLS1_2_VERSION, "TLS 1.2"},
      {TLS1_3_VERSION, "TLS 1.3"},
      {DTLS1_VERSION, "DTLS 1.0"},
      {DTLS1_2_VERSION, "DTLS 1.2"},
      {DTLS1_BAD_VER, "DTLS 1.0 (bad)"},
  #ifndef OPENSSL_NO_NTLS
      {NTLS_VERSION, "NTLS"},
  #endif
  };
  
  static const 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"},
  };
  
  /* Handshake types, sorted by ascending id  */
  static const 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_END_OF_EARLY_DATA, "EndOfEarlyData"},
      {SSL3_MT_ENCRYPTED_EXTENSIONS, "EncryptedExtensions"},
      {SSL3_MT_CERTIFICATE, "Certificate"},
      {SSL3_MT_SERVER_KEY_EXCHANGE, "ServerKeyExchange"},
      {SSL3_MT_CERTIFICATE_REQUEST, "CertificateRequest"},
      {SSL3_MT_SERVER_DONE, "ServerHelloDone"},
      {SSL3_MT_CERTIFICATE_VERIFY, "CertificateVerify"},
      {SSL3_MT_CLIENT_KEY_EXCHANGE, "ClientKeyExchange"},
      {SSL3_MT_FINISHED, "Finished"},
      {SSL3_MT_CERTIFICATE_URL, "CertificateUrl"},
      {SSL3_MT_CERTIFICATE_STATUS, "CertificateStatus"},
      {SSL3_MT_SUPPLEMENTAL_DATA, "SupplementalData"},
      {SSL3_MT_KEY_UPDATE, "KeyUpdate"},
  # ifndef OPENSSL_NO_NEXTPROTONEG
      {SSL3_MT_NEXT_PROTO, "NextProto"},
  # endif
      {SSL3_MT_MESSAGE_HASH, "MessageHash"}
  };
  
  /* Cipher suites */
  static const ssl_trace_tbl ssl_ciphers_tbl[] = {
      {0x0000, "TLS_NULL_WITH_NULL_NULL"},
      {0x0001, "TLS_RSA_WITH_NULL_MD5"},
      {0x0002, "TLS_RSA_WITH_NULL_SHA"},
      {0x0003, "TLS_RSA_EXPORT_WITH_RC4_40_MD5"},
      {0x0004, "TLS_RSA_WITH_RC4_128_MD5"},
      {0x0005, "TLS_RSA_WITH_RC4_128_SHA"},
      {0x0006, "TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5"},
      {0x0007, "TLS_RSA_WITH_IDEA_CBC_SHA"},
      {0x0008, "TLS_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0009, "TLS_RSA_WITH_DES_CBC_SHA"},
      {0x000A, "TLS_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x000B, "TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA"},
      {0x000C, "TLS_DH_DSS_WITH_DES_CBC_SHA"},
      {0x000D, "TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA"},
      {0x000E, "TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x000F, "TLS_DH_RSA_WITH_DES_CBC_SHA"},
      {0x0010, "TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x0011, "TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0012, "TLS_DHE_DSS_WITH_DES_CBC_SHA"},
      {0x0013, "TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA"},
      {0x0014, "TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA"},
      {0x0015, "TLS_DHE_RSA_WITH_DES_CBC_SHA"},
      {0x0016, "TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA"},
      {0x0017, "TLS_DH_anon_EXPORT_WITH_RC4_40_MD5"},
      {0x0018, "TLS_DH_anon_WITH_RC4_128_MD5"},
      {0x0019, "TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA"},
      {0x001A, "TLS_DH_anon_WITH_DES_CBC_SHA"},
      {0x001B, "TLS_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"},
      {0x002C, "TLS_PSK_WITH_NULL_SHA"},
      {0x002D, "TLS_DHE_PSK_WITH_NULL_SHA"},
      {0x002E, "TLS_RSA_PSK_WITH_NULL_SHA"},
      {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"},
      {0x0081, "TLS_GOSTR341001_WITH_28147_CNT_IMIT"},
      {0x0083, "TLS_GOSTR341001_WITH_NULL_GOSTR3411"},
      {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"},
      {0x5600, "TLS_FALLBACK_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"},
      {0xC033, "TLS_ECDHE_PSK_WITH_RC4_128_SHA"},
      {0xC034, "TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA"},
      {0xC035, "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA"},
      {0xC036, "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA"},
      {0xC037, "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256"},
      {0xC038, "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384"},
      {0xC039, "TLS_ECDHE_PSK_WITH_NULL_SHA"},
      {0xC03A, "TLS_ECDHE_PSK_WITH_NULL_SHA256"},
      {0xC03B, "TLS_ECDHE_PSK_WITH_NULL_SHA384"},
      {0xC03C, "TLS_RSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC03D, "TLS_RSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC03E, "TLS_DH_DSS_WITH_ARIA_128_CBC_SHA256"},
      {0xC03F, "TLS_DH_DSS_WITH_ARIA_256_CBC_SHA384"},
      {0xC040, "TLS_DH_RSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC041, "TLS_DH_RSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC042, "TLS_DHE_DSS_WITH_ARIA_128_CBC_SHA256"},
      {0xC043, "TLS_DHE_DSS_WITH_ARIA_256_CBC_SHA384"},
      {0xC044, "TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC045, "TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC046, "TLS_DH_anon_WITH_ARIA_128_CBC_SHA256"},
      {0xC047, "TLS_DH_anon_WITH_ARIA_256_CBC_SHA384"},
      {0xC048, "TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC049, "TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC04A, "TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC04B, "TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC04C, "TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC04D, "TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC04E, "TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256"},
      {0xC04F, "TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384"},
      {0xC050, "TLS_RSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC051, "TLS_RSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC052, "TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC053, "TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC054, "TLS_DH_RSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC055, "TLS_DH_RSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC056, "TLS_DHE_DSS_WITH_ARIA_128_GCM_SHA256"},
      {0xC057, "TLS_DHE_DSS_WITH_ARIA_256_GCM_SHA384"},
      {0xC058, "TLS_DH_DSS_WITH_ARIA_128_GCM_SHA256"},
      {0xC059, "TLS_DH_DSS_WITH_ARIA_256_GCM_SHA384"},
      {0xC05A, "TLS_DH_anon_WITH_ARIA_128_GCM_SHA256"},
      {0xC05B, "TLS_DH_anon_WITH_ARIA_256_GCM_SHA384"},
      {0xC05C, "TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC05D, "TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC05E, "TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC05F, "TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC060, "TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC061, "TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC062, "TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256"},
      {0xC063, "TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384"},
      {0xC064, "TLS_PSK_WITH_ARIA_128_CBC_SHA256"},
      {0xC065, "TLS_PSK_WITH_ARIA_256_CBC_SHA384"},
      {0xC066, "TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256"},
      {0xC067, "TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384"},
      {0xC068, "TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256"},
      {0xC069, "TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384"},
      {0xC06A, "TLS_PSK_WITH_ARIA_128_GCM_SHA256"},
      {0xC06B, "TLS_PSK_WITH_ARIA_256_GCM_SHA384"},
      {0xC06C, "TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256"},
      {0xC06D, "TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384"},
      {0xC06E, "TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256"},
      {0xC06F, "TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384"},
      {0xC070, "TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256"},
      {0xC071, "TLS_ECDHE_PSK_WITH_ARIA_256_CBC_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"},
      {0xC07A, "TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC07B, "TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC07C, "TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC07D, "TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC07E, "TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC07F, "TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC080, "TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC081, "TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC082, "TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC083, "TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC084, "TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC085, "TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC086, "TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC087, "TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC088, "TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC089, "TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC08A, "TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC08B, "TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC08C, "TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC08D, "TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC08E, "TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC08F, "TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC090, "TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC091, "TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC092, "TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256"},
      {0xC093, "TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384"},
      {0xC094, "TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC095, "TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC096, "TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC097, "TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC098, "TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC099, "TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC09A, "TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256"},
      {0xC09B, "TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384"},
      {0xC09C, "TLS_RSA_WITH_AES_128_CCM"},
      {0xC09D, "TLS_RSA_WITH_AES_256_CCM"},
      {0xC09E, "TLS_DHE_RSA_WITH_AES_128_CCM"},
      {0xC09F, "TLS_DHE_RSA_WITH_AES_256_CCM"},
      {0xC0A0, "TLS_RSA_WITH_AES_128_CCM_8"},
      {0xC0A1, "TLS_RSA_WITH_AES_256_CCM_8"},
      {0xC0A2, "TLS_DHE_RSA_WITH_AES_128_CCM_8"},
      {0xC0A3, "TLS_DHE_RSA_WITH_AES_256_CCM_8"},
      {0xC0A4, "TLS_PSK_WITH_AES_128_CCM"},
      {0xC0A5, "TLS_PSK_WITH_AES_256_CCM"},
      {0xC0A6, "TLS_DHE_PSK_WITH_AES_128_CCM"},
      {0xC0A7, "TLS_DHE_PSK_WITH_AES_256_CCM"},
      {0xC0A8, "TLS_PSK_WITH_AES_128_CCM_8"},
      {0xC0A9, "TLS_PSK_WITH_AES_256_CCM_8"},
      {0xC0AA, "TLS_PSK_DHE_WITH_AES_128_CCM_8"},
      {0xC0AB, "TLS_PSK_DHE_WITH_AES_256_CCM_8"},
      {0xC0AC, "TLS_ECDHE_ECDSA_WITH_AES_128_CCM"},
      {0xC0AD, "TLS_ECDHE_ECDSA_WITH_AES_256_CCM"},
      {0xC0AE, "TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8"},
      {0xC0AF, "TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8"},
      {0xCCA8, "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCA9, "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCAA, "TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCAB, "TLS_PSK_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCAC, "TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCAD, "TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256"},
      {0xCCAE, "TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256"},
      {0x1301, "TLS_AES_128_GCM_SHA256"},
      {0x1302, "TLS_AES_256_GCM_SHA384"},
      {0x1303, "TLS_CHACHA20_POLY1305_SHA256"},
      {0x1304, "TLS_AES_128_CCM_SHA256"},
      {0x1305, "TLS_AES_128_CCM_8_SHA256"},
      {0xFEFE, "SSL_RSA_FIPS_WITH_DES_CBC_SHA"},
      {0xFEFF, "SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA"},
      {0xFF85, "GOST2012-GOST8912-GOST8912"},
      {0xFF87, "GOST2012-NULL-GOST12"},
  #if (!defined OPENSSL_NO_SM2) && (!defined OPENSSL_NO_SM3) \
       && (!defined OPENSSL_NO_SM4)
      {0x00C6, "TLS_SM4_GCM_SM3"},
      {0x00C7, "TLS_SM4_CCM_SM3"},
  # if (!defined OPENSSL_NO_NTLS)
      {0xE011, "ECDHE-SM2-SM4-CBC-SM3"},
      {0xE051, "ECDHE-SM2-SM4-GCM-SM3"},
      {0xE013, "ECC-SM2-SM4-CBC-SM3"},
      {0xE053, "ECC-SM2-SM4-GCM-SM3"},
  # endif
  #endif
  };
  
  /* Compression methods */
  static const ssl_trace_tbl ssl_comp_tbl[] = {
      {0x0000, "No Compression"},
      {0x0001, "Zlib Compression"}
  };
  
  /* Extensions sorted by ascending id */
  static const 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_supported_groups, "supported_groups"},
      {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, "tls_heartbeat"},
      {TLSEXT_TYPE_application_layer_protocol_negotiation,
       "application_layer_protocol_negotiation"},
      {TLSEXT_TYPE_signed_certificate_timestamp, "signed_certificate_timestamps"},
      {TLSEXT_TYPE_padding, "padding"},
      {TLSEXT_TYPE_encrypt_then_mac, "encrypt_then_mac"},
      {TLSEXT_TYPE_extended_master_secret, "extended_master_secret"},
      {TLSEXT_TYPE_session_ticket, "session_ticket"},
      {TLSEXT_TYPE_psk, "psk"},
      {TLSEXT_TYPE_early_data, "early_data"},
      {TLSEXT_TYPE_supported_versions, "supported_versions"},
      {TLSEXT_TYPE_cookie, "cookie_ext"},
      {TLSEXT_TYPE_psk_kex_modes, "psk_key_exchange_modes"},
      {TLSEXT_TYPE_certificate_authorities, "certificate_authorities"},
      {TLSEXT_TYPE_post_handshake_auth, "post_handshake_auth"},
      {TLSEXT_TYPE_signature_algorithms_cert, "signature_algorithms_cert"},
      {TLSEXT_TYPE_key_share, "key_share"},
      {TLSEXT_TYPE_renegotiate, "renegotiate"},
  # ifndef OPENSSL_NO_NEXTPROTONEG
      {TLSEXT_TYPE_next_proto_neg, "next_proto_neg"},
  # endif
  };
  
  static const ssl_trace_tbl ssl_groups_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"},
      {29, "ecdh_x25519"},
      {30, "ecdh_x448"},
      {256, "ffdhe2048"},
      {257, "ffdhe3072"},
      {258, "ffdhe4096"},
      {259, "ffdhe6144"},
      {260, "ffdhe8192"},
      {0xFF01, "arbitrary_explicit_prime_curves"},
      {0xFF02, "arbitrary_explicit_char2_curves"},
      {41, "curveSM2"},
  };
  
  static const ssl_trace_tbl ssl_point_tbl[] = {
      {0, "uncompressed"},
      {1, "ansiX962_compressed_prime"},
      {2, "ansiX962_compressed_char2"}
  };
  
  static const ssl_trace_tbl ssl_mfl_tbl[] = {
      {0, "disabled"},
      {1, "max_fragment_length := 2^9 (512 bytes)"},
      {2, "max_fragment_length := 2^10 (1024 bytes)"},
      {3, "max_fragment_length := 2^11 (2048 bytes)"},
      {4, "max_fragment_length := 2^12 (4096 bytes)"}
  };
  
  static const ssl_trace_tbl ssl_sigalg_tbl[] = {
      {TLSEXT_SIGALG_ecdsa_secp256r1_sha256, "ecdsa_secp256r1_sha256"},
      {TLSEXT_SIGALG_ecdsa_secp384r1_sha384, "ecdsa_secp384r1_sha384"},
      {TLSEXT_SIGALG_ecdsa_secp521r1_sha512, "ecdsa_secp521r1_sha512"},
      {TLSEXT_SIGALG_ecdsa_sha224, "ecdsa_sha224"},
      {TLSEXT_SIGALG_ed25519, "ed25519"},
      {TLSEXT_SIGALG_ed448, "ed448"},
      {TLSEXT_SIGALG_ecdsa_sha1, "ecdsa_sha1"},
      {TLSEXT_SIGALG_rsa_pss_rsae_sha256, "rsa_pss_rsae_sha256"},
      {TLSEXT_SIGALG_rsa_pss_rsae_sha384, "rsa_pss_rsae_sha384"},
      {TLSEXT_SIGALG_rsa_pss_rsae_sha512, "rsa_pss_rsae_sha512"},
      {TLSEXT_SIGALG_rsa_pss_pss_sha256, "rsa_pss_pss_sha256"},
      {TLSEXT_SIGALG_rsa_pss_pss_sha384, "rsa_pss_pss_sha384"},
      {TLSEXT_SIGALG_rsa_pss_pss_sha512, "rsa_pss_pss_sha512"},
      {TLSEXT_SIGALG_rsa_pkcs1_sha256, "rsa_pkcs1_sha256"},
      {TLSEXT_SIGALG_rsa_pkcs1_sha384, "rsa_pkcs1_sha384"},
      {TLSEXT_SIGALG_rsa_pkcs1_sha512, "rsa_pkcs1_sha512"},
      {TLSEXT_SIGALG_rsa_pkcs1_sha224, "rsa_pkcs1_sha224"},
      {TLSEXT_SIGALG_rsa_pkcs1_sha1, "rsa_pkcs1_sha1"},
      {TLSEXT_SIGALG_dsa_sha256, "dsa_sha256"},
      {TLSEXT_SIGALG_dsa_sha384, "dsa_sha384"},
      {TLSEXT_SIGALG_dsa_sha512, "dsa_sha512"},
      {TLSEXT_SIGALG_dsa_sha224, "dsa_sha224"},
      {TLSEXT_SIGALG_dsa_sha1, "dsa_sha1"},
      {TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256, "gost2012_256"},
      {TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512, "gost2012_512"},
      {TLSEXT_SIGALG_gostr34102001_gostr3411, "gost2001_gost94"},
      {TLSEXT_SIGALG_sm2sig_sm3, "sm2sig_sm3"},
  };
  
  static const 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 const ssl_trace_tbl ssl_psk_kex_modes_tbl[] = {
      {TLSEXT_KEX_MODE_KE, "psk_ke"},
      {TLSEXT_KEX_MODE_KE_DHE, "psk_dhe_ke"}
  };
  
  static const ssl_trace_tbl ssl_key_update_tbl[] = {
      {SSL_KEY_UPDATE_NOT_REQUESTED, "update_not_requested"},
      {SSL_KEY_UPDATE_REQUESTED, "update_requested"}
  };
  
  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,
                               unsigned int *version)
  {
      int vers;
  
      if (*pmsglen < 2)
          return 0;
      vers = ((*pmsg)[0] << 8) | (*pmsg)[1];
      if (version != NULL)
          *version = vers;
      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, const SSL *ssl,
                                 const unsigned char **pmsg, size_t *pmsglen)
  {
      if (*pmsglen < 2)
          return 0;
      if (SSL_USE_SIGALGS(ssl)) {
          const unsigned char *p = *pmsg;
          unsigned int sigalg = (p[0] << 8) | p[1];
  
          BIO_indent(bio, indent, 80);
          BIO_printf(bio, "Signature Algorithm: %s (0x%04x)\n",
                     ssl_trace_str(sigalg, ssl_sigalg_tbl), sigalg);
          *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,
                                 unsigned char mt, int extype,
                                 const unsigned char *ext, size_t extlen)
  {
      size_t xlen, share_len;
      unsigned int sigalg;
      uint32_t max_early_data;
  
      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_max_fragment_length:
          if (extlen < 1)
              return 0;
          xlen = extlen;
          return ssl_trace_list(bio, indent + 2, ext, xlen, 1, ssl_mfl_tbl);
  
      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_supported_groups:
          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_groups_tbl);
      case TLSEXT_TYPE_application_layer_protocol_negotiation:
          if (extlen < 2)
              return 0;
          xlen = (ext[0] << 8) | ext[1];
          if (extlen != xlen + 2)
              return 0;
          ext += 2;
          while (xlen > 0) {
              size_t plen = *ext++;
  
              if (plen + 1 > xlen)
                  return 0;
              BIO_indent(bio, indent + 2, 80);
              BIO_write(bio, ext, plen);
              BIO_puts(bio, "\n");
              ext += plen;
              xlen -= plen + 1;
          }
          return 1;
  
      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);
              sigalg = (ext[0] << 8) | ext[1];
              BIO_printf(bio, "%s (0x%04x)\n",
                         ssl_trace_str(sigalg, ssl_sigalg_tbl), sigalg);
              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:
          return 0;
  
      case TLSEXT_TYPE_session_ticket:
          if (extlen != 0)
              ssl_print_hex(bio, indent + 4, "ticket", ext, extlen);
          break;
  
      case TLSEXT_TYPE_key_share:
          if (server && extlen == 2) {
              int group_id;
  
              /* We assume this is an HRR, otherwise this is an invalid key_share */
              group_id = (ext[0] << 8) | ext[1];
              BIO_indent(bio, indent + 4, 80);
              BIO_printf(bio, "NamedGroup: %s (%d)\n",
                         ssl_trace_str(group_id, ssl_groups_tbl), group_id);
              break;
          }
          if (extlen < 2)
              return 0;
          if (server) {
              xlen = extlen;
          } else {
              xlen = (ext[0] << 8) | ext[1];
              if (extlen != xlen + 2)
                  return 0;
              ext += 2;
          }
          for (; xlen > 0; ext += share_len, xlen -= share_len) {
              int group_id;
  
              if (xlen < 4)
                  return 0;
              group_id = (ext[0] << 8) | ext[1];
              share_len = (ext[2] << 8) | ext[3];
              ext += 4;
              xlen -= 4;
              if (xlen < share_len)
                  return 0;
              BIO_indent(bio, indent + 4, 80);
              BIO_printf(bio, "NamedGroup: %s (%d)\n",
                         ssl_trace_str(group_id, ssl_groups_tbl), group_id);
              ssl_print_hex(bio, indent + 4, "key_exchange: ", ext, share_len);
          }
          break;
  
      case TLSEXT_TYPE_supported_versions:
          if (server) {
              int version;
  
              if (extlen != 2)
                  return 0;
              version = (ext[0] << 8) | ext[1];
              BIO_indent(bio, indent + 4, 80);
              BIO_printf(bio, "%s (%d)\n",
                         ssl_trace_str(version, ssl_version_tbl), version);
              break;
          }
          if (extlen < 1)
              return 0;
          xlen = ext[0];
          if (extlen != xlen + 1)
              return 0;
          return ssl_trace_list(bio, indent + 2, ext + 1, xlen, 2,
                                ssl_version_tbl);
  
      case TLSEXT_TYPE_psk_kex_modes:
          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_psk_kex_modes_tbl);
  
      case TLSEXT_TYPE_early_data:
          if (mt != SSL3_MT_NEWSESSION_TICKET)
              break;
          if (extlen != 4)
              return 0;
          max_early_data = (ext[0] << 24) | (ext[1] << 16) | (ext[2] << 8)
                           | ext[3];
          BIO_indent(bio, indent + 2, 80);
          BIO_printf(bio, "max_early_data=%u\n", max_early_data);
          break;
  
      default:
          BIO_dump_indent(bio, (const char *)ext, extlen, indent + 2);
      }
      return 1;
  }
  
  static int ssl_print_extensions(BIO *bio, int indent, int server,
                                  unsigned char mt, const unsigned char **msgin,
                                  size_t *msginlen)
  {
      size_t extslen, msglen = *msginlen;
      const unsigned char *msg = *msgin;
  
      BIO_indent(bio, indent, 80);
      if (msglen == 0) {
          BIO_puts(bio, "No extensions\n");
          return 1;
      }
      if (msglen < 2)
          return 0;
      extslen = (msg[0] << 8) | msg[1];
      msglen -= 2;
      msg += 2;
      if (extslen == 0) {
          BIO_puts(bio, "No extensions\n");
          *msgin = msg;
          *msginlen = msglen;
          return 1;
      }
      if (extslen > msglen)
          return 0;
      BIO_printf(bio, "extensions, length = %d\n", (int)extslen);
      msglen -= extslen;
      while (extslen > 0) {
          int extype;
          size_t extlen;
          if (extslen < 4)
              return 0;
          extype = (msg[0] << 8) | msg[1];
          extlen = (msg[2] << 8) | msg[3];
          if (extslen < extlen + 4) {
              BIO_printf(bio, "extensions, extype = %d, extlen = %d\n", extype,
                         (int)extlen);
              BIO_dump_indent(bio, (const char *)msg, extslen, indent + 2);
              return 0;
          }
          msg += 4;
          if (!ssl_print_extension(bio, indent + 2, server, mt, extype, msg,
                                   extlen))
              return 0;
          msg += extlen;
          extslen -= extlen + 4;
      }
  
      *msgin = msg;
      *msginlen = msglen;
      return 1;
  }
  
  static int ssl_print_client_hello(BIO *bio, const 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, NULL))
          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, SSL3_MT_CLIENT_HELLO, &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, NULL))
          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;
      unsigned int vers;
  
      if (!ssl_print_version(bio, indent, "server_version", &msg, &msglen, &vers))
          return 0;
      if (!ssl_print_random(bio, indent, &msg, &msglen))
          return 0;
      if (vers != TLS1_3_VERSION
              && !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 (vers != TLS1_3_VERSION) {
          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, SSL3_MT_SERVER_HELLO, &msg,
                                &msglen))
          return 0;
      return 1;
  }
  
  static int ssl_get_keyex(const char **pname, const 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_kDHE) {
          *pname = "DHE";
          return SSL_kDHE;
      }
      if (alg_k & SSL_kECDHE) {
          *pname = "ECDHE";
          return SSL_kECDHE;
      }
      if (alg_k & SSL_kPSK) {
          *pname = "PSK";
          return SSL_kPSK;
      }
      if (alg_k & SSL_kRSAPSK) {
          *pname = "RSAPSK";
          return SSL_kRSAPSK;
      }
      if (alg_k & SSL_kDHEPSK) {
          *pname = "DHEPSK";
          return SSL_kDHEPSK;
      }
      if (alg_k & SSL_kECDHEPSK) {
          *pname = "ECDHEPSK";
          return SSL_kECDHEPSK;
      }
      if (alg_k & SSL_kSRP) {
          *pname = "SRP";
          return SSL_kSRP;
      }
      if (alg_k & SSL_kGOST) {
          *pname = "GOST";
          return SSL_kGOST;
      }
  # if (!defined OPENSSL_NO_NTLS) && (!defined OPENSSL_NO_SM2)    \
       && (!defined OPENSSL_NO_SM3) && (!defined OPENSSL_NO_SM4)
      if (alg_k & SSL_kSM2) {
          *pname = "SM2";
          return SSL_kSM2;
      }
      if (alg_k & SSL_kSM2DHE) {
          *pname = "SM2DHE";
          return SSL_kSM2DHE;
      }
  # endif
      *pname = "UNKNOWN";
      return 0;
  }
  
  static int ssl_print_client_keyex(BIO *bio, int indent, const SSL *ssl,
                                    const unsigned char *msg, size_t msglen)
  {
      const char *algname;
      int id = ssl_get_keyex(&algname, ssl);
  
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "KeyExchangeAlgorithm=%s\n", algname);
      if (id & SSL_PSK) {
          if (!ssl_print_hexbuf(bio, indent + 2,
                                "psk_identity", 2, &msg, &msglen))
              return 0;
      }
      switch (id) {
  
      case SSL_kRSA:
      case SSL_kRSAPSK:
          if (TLS1_get_version(ssl) == SSL3_VERSION) {
              ssl_print_hex(bio, indent + 2,
                            "EncryptedPreMasterSecret", msg, msglen);
          } else {
              if (!ssl_print_hexbuf(bio, indent + 2,
                                    "EncryptedPreMasterSecret", 2, &msg, &msglen))
                  return 0;
          }
          break;
  
      case SSL_kDHE:
      case SSL_kDHEPSK:
          if (!ssl_print_hexbuf(bio, indent + 2, "dh_Yc", 2, &msg, &msglen))
              return 0;
          break;
  
      case SSL_kECDHE:
      case SSL_kECDHEPSK:
          if (!ssl_print_hexbuf(bio, indent + 2, "ecdh_Yc", 1, &msg, &msglen))
              return 0;
          break;
  # if (!defined OPENSSL_NO_NTLS) && (!defined OPENSSL_NO_SM2)    \
       && (!defined OPENSSL_NO_SM3) && (!defined OPENSSL_NO_SM4)
      case SSL_kSM2:
          if (!ssl_print_hexbuf(bio, indent + 2,
                                "EncryptedPreMasterSecret", 2, &msg, &msglen))
              return 0;
          break;
      case SSL_kSM2DHE:
          ssl_print_hex(bio, indent + 2, "ECParameters", msg, 3);
          msg += 3;
          msglen -= 3;
          if (!ssl_print_hexbuf(bio, indent + 2,
                                "sm2dh_Yc", 1, &msg, &msglen))
              return 0;
          break;
  # endif
      }
  
      return !msglen;
  }
  
  static int ssl_print_server_keyex(BIO *bio, int indent, const SSL *ssl,
                                    const unsigned char *msg, size_t msglen)
  {
      const char *algname;
      int id = ssl_get_keyex(&algname, ssl);
  
      BIO_indent(bio, indent, 80);
      BIO_printf(bio, "KeyExchangeAlgorithm=%s\n", algname);
      if (id & SSL_PSK) {
          if (!ssl_print_hexbuf(bio, indent + 2,
                                "psk_identity_hint", 2, &msg, &msglen))
              return 0;
      }
      switch (id) {
      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_kDHE:
      case SSL_kDHEPSK:
          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;
  
  # ifndef OPENSSL_NO_EC
      case SSL_kECDHE:
      case SSL_kECDHEPSK:
  # if (!defined OPENSSL_NO_NTLS) && (!defined OPENSSL_NO_SM2)    \
       && (!defined OPENSSL_NO_SM3) && (!defined OPENSSL_NO_SM4)
      case SSL_kSM2DHE:
  # endif
          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_groups_tbl), curve);
              msg += 3;
              msglen -= 3;
              if (!ssl_print_hexbuf(bio, indent + 2, "point", 1, &msg, &msglen))
                  return 0;
          } else {
              BIO_printf(bio, "UNKNOWN CURVE PARAMETER TYPE %d\n", msg[0]);
              return 0;
          }
          break;
  # endif
  
      case SSL_kPSK:
      case SSL_kRSAPSK:
          break;
      }
      if (!(id & SSL_PSK))
          ssl_print_signature(bio, indent, ssl, &msg, &msglen);
      return !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, const SSL *ssl, int server,
                                    int indent, const unsigned char *msg,
                                    size_t msglen)
  {
      size_t clen;
  
      if (SSL_IS_TLS13(ssl)
              && !ssl_print_hexbuf(bio, indent, "context", 1, &msg, &msglen))
          return 0;
  
      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;
          if (SSL_IS_TLS13(ssl)
              && !ssl_print_extensions(bio, indent + 2, server,
                                       SSL3_MT_CERTIFICATE, &msg, &clen))
              return 0;
  
      }
      return 1;
  }
  
  static int ssl_print_cert_request(BIO *bio, int indent, const SSL *ssl,
                                    const unsigned char *msg, size_t msglen)
  {
      size_t xlen;
      unsigned int sigalg;
  
      if (SSL_IS_TLS13(ssl)) {
          if (!ssl_print_hexbuf(bio, indent, "request_context", 1, &msg, &msglen))
              return 0;
          if (!ssl_print_extensions(bio, indent, 1,
                                    SSL3_MT_CERTIFICATE_REQUEST, &msg, &msglen))
              return 0;
          return 1;
      } else {
          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(ssl)) {
          if (msglen < 2)
              return 0;
          xlen = (msg[0] << 8) | msg[1];
          if (msglen < xlen + 2 || (xlen & 1))
              return 0;
          msg += 2;
          msglen -= xlen + 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);
              sigalg = (msg[0] << 8) | msg[1];
              BIO_printf(bio, "%s (0x%04x)\n",
                         ssl_trace_str(sigalg, ssl_sigalg_tbl), sigalg);
              xlen -= 2;
              msg += 2;
          }
          msg += xlen;
      }
  
      if (msglen < 2)
          return 0;
      xlen = (msg[0] << 8) | msg[1];
      BIO_indent(bio, indent, 80);
      if (msglen < xlen + 2)
          return 0;
      msg += 2;
      msglen -= 2 + xlen;
      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;
      }
      if (SSL_IS_TLS13(ssl)) {
          if (!ssl_print_hexbuf(bio, indent, "request_extensions", 2,
                                &msg, &msglen))
              return 0;
      }
      return msglen == 0;
  }
  
  static int ssl_print_ticket(BIO *bio, int indent, const SSL *ssl,
                              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_IS_TLS13(ssl)) {
          unsigned int ticket_age_add;
  
          if (msglen < 4)
              return 0;
          ticket_age_add =
              (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_age_add=%u\n", ticket_age_add);
          if (!ssl_print_hexbuf(bio, indent + 2, "ticket_nonce", 1, &msg,
                                &msglen))
              return 0;
      }
      if (!ssl_print_hexbuf(bio, indent + 2, "ticket", 2, &msg, &msglen))
          return 0;
      if (SSL_IS_TLS13(ssl)
              && !ssl_print_extensions(bio, indent + 2, 0,
                                       SSL3_MT_NEWSESSION_TICKET, &msg, &msglen))
          return 0;
      if (msglen)
          return 0;
      return 1;
  }
  
  static int ssl_print_handshake(BIO *bio, const SSL *ssl, int server,
                                 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, ssl, server, 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, ssl, msg, msglen))
              return 0;
          break;
  
      case SSL3_MT_ENCRYPTED_EXTENSIONS:
          if (!ssl_print_extensions(bio, indent + 2, 1,
                                    SSL3_MT_ENCRYPTED_EXTENSIONS, &msg, &msglen))
              return 0;
          break;
  
      case SSL3_MT_KEY_UPDATE:
          if (msglen != 1) {
              ssl_print_hex(bio, indent + 2, "unexpected value", msg, msglen);
              return 0;
          }
          if (!ssl_trace_list(bio, indent + 2, msg, msglen, 1,
                              ssl_key_update_tbl))
              return 0;
          break;
  
      default:
          BIO_indent(bio, indent + 2, 80);
          BIO_puts(bio, "Unsupported, hex dump follows:\n");
          BIO_dump_indent(bio, (const char *)msg, msglen, indent + 4);
      }
      return 1;
  }
  
  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;
  
      switch (content_type) {
      case SSL3_RT_HEADER:
          {
              int hvers;
  
              /* avoid overlapping with length at the end of buffer */
              if (msglen < (size_t)(SSL_IS_DTLS(ssl) ?
                       DTLS1_RT_HEADER_LENGTH : SSL3_RT_HEADER_LENGTH)) {
                  BIO_puts(bio, write_p ? "Sent" : "Received");
                  ssl_print_hex(bio, 0, " too short message", msg, msglen);
                  break;
              }
              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]));
              }
  
              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_INNER_CONTENT_TYPE:
          BIO_printf(bio, "  Inner Content Type = %s (%d)",
                     ssl_trace_str(msg[0], ssl_content_tbl), msg[0]);
          break;
  
      case SSL3_RT_HANDSHAKE:
          if (!ssl_print_handshake(bio, ssl, ssl->server ? write_p : !write_p,
                                   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]);
          }
  
      }
  
      BIO_puts(bio, "\n");
  }
  
  #endif
  