github.com/twelsh-aw/go/src@v0.0.0-20230516233729-a56fe86a7c81/crypto/tls/alert.go (about)

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package tls
     6  
     7  import "strconv"
     8  
     9  type alert uint8
    10  
    11  const (
    12  	// alert level
    13  	alertLevelWarning = 1
    14  	alertLevelError   = 2
    15  )
    16  
    17  const (
    18  	alertCloseNotify                  alert = 0
    19  	alertUnexpectedMessage            alert = 10
    20  	alertBadRecordMAC                 alert = 20
    21  	alertDecryptionFailed             alert = 21
    22  	alertRecordOverflow               alert = 22
    23  	alertDecompressionFailure         alert = 30
    24  	alertHandshakeFailure             alert = 40
    25  	alertBadCertificate               alert = 42
    26  	alertUnsupportedCertificate       alert = 43
    27  	alertCertificateRevoked           alert = 44
    28  	alertCertificateExpired           alert = 45
    29  	alertCertificateUnknown           alert = 46
    30  	alertIllegalParameter             alert = 47
    31  	alertUnknownCA                    alert = 48
    32  	alertAccessDenied                 alert = 49
    33  	alertDecodeError                  alert = 50
    34  	alertDecryptError                 alert = 51
    35  	alertExportRestriction            alert = 60
    36  	alertProtocolVersion              alert = 70
    37  	alertInsufficientSecurity         alert = 71
    38  	alertInternalError                alert = 80
    39  	alertInappropriateFallback        alert = 86
    40  	alertUserCanceled                 alert = 90
    41  	alertNoRenegotiation              alert = 100
    42  	alertMissingExtension             alert = 109
    43  	alertUnsupportedExtension         alert = 110
    44  	alertCertificateUnobtainable      alert = 111
    45  	alertUnrecognizedName             alert = 112
    46  	alertBadCertificateStatusResponse alert = 113
    47  	alertBadCertificateHashValue      alert = 114
    48  	alertUnknownPSKIdentity           alert = 115
    49  	alertCertificateRequired          alert = 116
    50  	alertNoApplicationProtocol        alert = 120
    51  )
    52  
    53  var alertText = map[alert]string{
    54  	alertCloseNotify:                  "close notify",
    55  	alertUnexpectedMessage:            "unexpected message",
    56  	alertBadRecordMAC:                 "bad record MAC",
    57  	alertDecryptionFailed:             "decryption failed",
    58  	alertRecordOverflow:               "record overflow",
    59  	alertDecompressionFailure:         "decompression failure",
    60  	alertHandshakeFailure:             "handshake failure",
    61  	alertBadCertificate:               "bad certificate",
    62  	alertUnsupportedCertificate:       "unsupported certificate",
    63  	alertCertificateRevoked:           "revoked certificate",
    64  	alertCertificateExpired:           "expired certificate",
    65  	alertCertificateUnknown:           "unknown certificate",
    66  	alertIllegalParameter:             "illegal parameter",
    67  	alertUnknownCA:                    "unknown certificate authority",
    68  	alertAccessDenied:                 "access denied",
    69  	alertDecodeError:                  "error decoding message",
    70  	alertDecryptError:                 "error decrypting message",
    71  	alertExportRestriction:            "export restriction",
    72  	alertProtocolVersion:              "protocol version not supported",
    73  	alertInsufficientSecurity:         "insufficient security level",
    74  	alertInternalError:                "internal error",
    75  	alertInappropriateFallback:        "inappropriate fallback",
    76  	alertUserCanceled:                 "user canceled",
    77  	alertNoRenegotiation:              "no renegotiation",
    78  	alertMissingExtension:             "missing extension",
    79  	alertUnsupportedExtension:         "unsupported extension",
    80  	alertCertificateUnobtainable:      "certificate unobtainable",
    81  	alertUnrecognizedName:             "unrecognized name",
    82  	alertBadCertificateStatusResponse: "bad certificate status response",
    83  	alertBadCertificateHashValue:      "bad certificate hash value",
    84  	alertUnknownPSKIdentity:           "unknown PSK identity",
    85  	alertCertificateRequired:          "certificate required",
    86  	alertNoApplicationProtocol:        "no application protocol",
    87  }
    88  
    89  func (e alert) String() string {
    90  	s, ok := alertText[e]
    91  	if ok {
    92  		return "tls: " + s
    93  	}
    94  	return "tls: alert(" + strconv.Itoa(int(e)) + ")"
    95  }
    96  
    97  func (e alert) Error() string {
    98  	return e.String()
    99  }