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
5package tls
6
7import "strconv"
8
9type alert uint8
10
11const (
12	// alert level
13	alertLevelWarning = 1
14	alertLevelError   = 2
15)
16
17const (
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	alertProtocolVersion        alert = 70
36	alertInsufficientSecurity   alert = 71
37	alertInternalError          alert = 80
38	alertInappropriateFallback  alert = 86
39	alertUserCanceled           alert = 90
40	alertNoRenegotiation        alert = 100
41)
42
43var alertText = map[alert]string{
44	alertCloseNotify:            "close notify",
45	alertUnexpectedMessage:      "unexpected message",
46	alertBadRecordMAC:           "bad record MAC",
47	alertDecryptionFailed:       "decryption failed",
48	alertRecordOverflow:         "record overflow",
49	alertDecompressionFailure:   "decompression failure",
50	alertHandshakeFailure:       "handshake failure",
51	alertBadCertificate:         "bad certificate",
52	alertUnsupportedCertificate: "unsupported certificate",
53	alertCertificateRevoked:     "revoked certificate",
54	alertCertificateExpired:     "expired certificate",
55	alertCertificateUnknown:     "unknown certificate",
56	alertIllegalParameter:       "illegal parameter",
57	alertUnknownCA:              "unknown certificate authority",
58	alertAccessDenied:           "access denied",
59	alertDecodeError:            "error decoding message",
60	alertDecryptError:           "error decrypting message",
61	alertProtocolVersion:        "protocol version not supported",
62	alertInsufficientSecurity:   "insufficient security level",
63	alertInternalError:          "internal error",
64	alertInappropriateFallback:  "inappropriate fallback",
65	alertUserCanceled:           "user canceled",
66	alertNoRenegotiation:        "no renegotiation",
67}
68
69func (e alert) String() string {
70	s, ok := alertText[e]
71	if ok {
72		return s
73	}
74	return "alert(" + strconv.Itoa(int(e)) + ")"
75}
76
77func (e alert) Error() string {
78	return e.String()
79}
80