forked from hyperledger/fabric-ca
-
Notifications
You must be signed in to change notification settings - Fork 0
/
auth.go
149 lines (133 loc) · 3.92 KB
/
auth.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
138
139
140
141
142
143
144
145
146
147
148
149
/*
Copyright IBM Corp. 2016 All Rights Reserved.
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 server
import (
"bytes"
"errors"
"io/ioutil"
"net/http"
"github.com/cloudflare/cfssl/api"
cerr "github.com/cloudflare/cfssl/errors"
"github.com/cloudflare/cfssl/log"
"github.com/cloudflare/cfssl/revoke"
"github.com/hyperledger/fabric-ca/util"
)
const (
enrollmentIDHdrName = "__eid__"
)
// AuthHandler
type fcaAuthHandler struct {
basic bool
token bool
next http.Handler
}
var authError = cerr.NewBadRequest(errors.New("authorization failure"))
// NewAuthWrapper is auth wrapper constructor
// Only the "sign" and "enroll" URIs use basic auth for the enrollment secret
// The others require a token
func NewAuthWrapper(path string, handler http.Handler, err error) (string, http.Handler, error) {
if path == "sign" || path == "enroll" {
handler, err = newBasicAuthHandler(handler, err)
return wrappedPath(path), handler, err
}
handler, err = newTokenAuthHandler(handler, err)
return wrappedPath(path), handler, err
}
func newBasicAuthHandler(handler http.Handler, errArg error) (h http.Handler, err error) {
return newAuthHandler(true, false, handler, errArg)
}
func newTokenAuthHandler(handler http.Handler, errArg error) (h http.Handler, err error) {
return newAuthHandler(false, true, handler, errArg)
}
func newAuthHandler(basic, token bool, handler http.Handler, errArg error) (h http.Handler, err error) {
log.Debug("newAuthHandler")
if errArg != nil {
return nil, errArg
}
ah := new(fcaAuthHandler)
ah.basic = basic
ah.token = token
ah.next = handler
return ah, nil
}
func (ah *fcaAuthHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
err := ah.serveHTTP(w, r)
if err != nil {
api.HandleError(w, err)
} else {
ah.next.ServeHTTP(w, r)
}
}
// Handle performs authentication
func (ah *fcaAuthHandler) serveHTTP(w http.ResponseWriter, r *http.Request) error {
log.Infof("Received request\n%s", util.HTTPRequestToString(r))
cfg := CFG
if !cfg.Authentication {
log.Debug("Authentication is disabled")
return nil
}
authHdr := r.Header.Get("authorization")
if authHdr == "" {
log.Debug("No authorization header")
return errNoAuthHdr
}
user, pwd, ok := r.BasicAuth()
if ok {
if !ah.basic {
log.Debugf("Basic auth is not allowed; found %s", authHdr)
return errBasicAuthNotAllowed
}
u, err := userRegistry.GetUser(user, nil)
if err != nil {
return err
}
err = u.Login(pwd)
if err != nil {
return err
}
log.Debug("User/Pass was correct")
r.Header.Set(enrollmentIDHdrName, user)
// TODO: Do the following
// 2) Update state of 'user' in DB as enrolled and return true.
return nil
}
// Perform token verification
if ah.token {
// read body
body, err := ioutil.ReadAll(r.Body)
if err != nil {
return authError
}
r.Body = ioutil.NopCloser(bytes.NewReader(body))
// verify token
cert, err2 := util.VerifyToken(authHdr, body)
if err2 != nil {
return authError
}
// Check for certificate revocation and expiration
revokedOrExpired, checked := revoke.VerifyCertificate(cert)
if revokedOrExpired {
log.Debug("Certificate was either revoked or has expired")
return authError
}
if !checked {
log.Debug("A failure occurred while checking for revocation and expiration")
return authError
}
r.Header.Set(enrollmentIDHdrName, util.GetEnrollmentIDFromX509Certificate(cert))
}
return nil
}
func wrappedPath(path string) string {
return "/api/v1/cfssl/" + path
}