/
authV4.go
137 lines (121 loc) · 4.83 KB
/
authV4.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
// Copyright 2019 Huawei Technologies Co.,Ltd.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
package hw
import (
"strings"
"time"
)
func getV4StringToSign(method, canonicalizedURL, queryURL, scope, longDate, payload string, signedHeaders []string, headers map[string][]string) string {
canonicalRequest := make([]string, 0, 10+len(signedHeaders)*4)
canonicalRequest = append(canonicalRequest, method)
canonicalRequest = append(canonicalRequest, "\n")
canonicalRequest = append(canonicalRequest, canonicalizedURL)
canonicalRequest = append(canonicalRequest, "\n")
canonicalRequest = append(canonicalRequest, queryURL)
canonicalRequest = append(canonicalRequest, "\n")
for _, signedHeader := range signedHeaders {
values, _ := headers[signedHeader]
for _, value := range values {
canonicalRequest = append(canonicalRequest, signedHeader)
canonicalRequest = append(canonicalRequest, ":")
canonicalRequest = append(canonicalRequest, value)
canonicalRequest = append(canonicalRequest, "\n")
}
}
canonicalRequest = append(canonicalRequest, "\n")
canonicalRequest = append(canonicalRequest, strings.Join(signedHeaders, ";"))
canonicalRequest = append(canonicalRequest, "\n")
canonicalRequest = append(canonicalRequest, payload)
_canonicalRequest := strings.Join(canonicalRequest, "")
var isSecurityToken bool
var securityToken []string
if securityToken, isSecurityToken = headers[HEADER_STS_TOKEN_OBS]; !isSecurityToken {
securityToken, isSecurityToken = headers[HEADER_STS_TOKEN_AMZ]
}
var query []string
if !isSecurityToken {
query = strings.Split(queryURL, "&")
for _, value := range query {
if strings.HasPrefix(value, HEADER_STS_TOKEN_AMZ+"=") || strings.HasPrefix(value, HEADER_STS_TOKEN_OBS+"=") {
if value[len(HEADER_STS_TOKEN_AMZ)+1:] != "" {
securityToken = []string{value[len(HEADER_STS_TOKEN_AMZ)+1:]}
isSecurityToken = true
}
}
}
}
logCanonicalRequest := _canonicalRequest
if isSecurityToken && len(securityToken) > 0 {
logCanonicalRequest = strings.Replace(logCanonicalRequest, securityToken[0], "******", -1)
}
doLog(LEVEL_DEBUG, "The v4 auth canonicalRequest:\n%s", logCanonicalRequest)
stringToSign := make([]string, 0, 7)
stringToSign = append(stringToSign, V4_HASH_PREFIX)
stringToSign = append(stringToSign, "\n")
stringToSign = append(stringToSign, longDate)
stringToSign = append(stringToSign, "\n")
stringToSign = append(stringToSign, scope)
stringToSign = append(stringToSign, "\n")
stringToSign = append(stringToSign, HexSha256([]byte(_canonicalRequest)))
_stringToSign := strings.Join(stringToSign, "")
doLog(LEVEL_DEBUG, "The v4 auth stringToSign:\n%s", _stringToSign)
return _stringToSign
}
// V4Auth is a wrapper for v4Auth
func V4Auth(ak, sk, region, method, canonicalizedURL, queryURL string, headers map[string][]string) map[string]string {
return v4Auth(ak, sk, region, method, canonicalizedURL, queryURL, headers)
}
func v4Auth(ak, sk, region, method, canonicalizedURL, queryURL string, headers map[string][]string) map[string]string {
var t time.Time
if val, ok := headers[HEADER_DATE_AMZ]; ok {
var err error
t, err = time.Parse(LONG_DATE_FORMAT, val[0])
if err != nil {
t = time.Now().UTC()
}
} else if val, ok := headers[PARAM_DATE_AMZ_CAMEL]; ok {
var err error
t, err = time.Parse(LONG_DATE_FORMAT, val[0])
if err != nil {
t = time.Now().UTC()
}
} else if val, ok := headers[HEADER_DATE_CAMEL]; ok {
var err error
t, err = time.Parse(RFC1123_FORMAT, val[0])
if err != nil {
t = time.Now().UTC()
}
} else if val, ok := headers[strings.ToLower(HEADER_DATE_CAMEL)]; ok {
var err error
t, err = time.Parse(RFC1123_FORMAT, val[0])
if err != nil {
t = time.Now().UTC()
}
} else {
t = time.Now().UTC()
}
shortDate := t.Format(SHORT_DATE_FORMAT)
longDate := t.Format(LONG_DATE_FORMAT)
signedHeaders, _headers := getSignedHeaders(headers)
credential, scope := getCredential(ak, region, shortDate)
payload := UNSIGNED_PAYLOAD
if val, ok := headers[HEADER_CONTENT_SHA256_AMZ]; ok {
payload = val[0]
}
stringToSign := getV4StringToSign(method, canonicalizedURL, queryURL, scope, longDate, payload, signedHeaders, _headers)
signature := getSignature(stringToSign, sk, region, shortDate)
ret := make(map[string]string, 3)
ret["Credential"] = credential
ret["SignedHeaders"] = strings.Join(signedHeaders, ";")
ret["Signature"] = signature
return ret
}