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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
package osxkeychain
/*
#cgo CFLAGS: -x objective-c -mmacosx-version-min=10.11
#cgo LDFLAGS: -framework Security -framework Foundation -mmacosx-version-min=10.11
#include "osxkeychain_darwin.h"
#include <stdlib.h>
*/
import "C"
import (
"errors"
"strconv"
"unsafe"
"github.com/docker/docker-credential-helpers/credentials"
"github.com/docker/docker-credential-helpers/registryurl"
)
// errCredentialsNotFound is the specific error message returned by OS X
// when the credentials are not in the keychain.
const errCredentialsNotFound = "The specified item could not be found in the keychain."
// errCredentialsNotFound is the specific error message returned by OS X
// when environment does not allow showing dialog to unlock keychain.
const errInteractionNotAllowed = "User interaction is not allowed."
// ErrInteractionNotAllowed is returned if keychain password prompt can not be shown.
var ErrInteractionNotAllowed = errors.New(`keychain cannot be accessed because the current session does not allow user interaction. The keychain may be locked; unlock it by running "security -v unlock-keychain ~/Library/Keychains/login.keychain-db" and try again`)
// Osxkeychain handles secrets using the OS X Keychain as store.
type Osxkeychain struct{}
// Add adds new credentials to the keychain.
func (h Osxkeychain) Add(creds *credentials.Credentials) error {
h.Delete(creds.ServerURL)
s, err := splitServer(creds.ServerURL)
if err != nil {
return err
}
defer freeServer(s)
label := C.CString(credentials.CredsLabel)
defer C.free(unsafe.Pointer(label))
username := C.CString(creds.Username)
defer C.free(unsafe.Pointer(username))
secret := C.CString(creds.Secret)
defer C.free(unsafe.Pointer(secret))
errMsg := C.keychain_add(s, label, username, secret)
if errMsg != nil {
defer C.free(unsafe.Pointer(errMsg))
return errors.New(C.GoString(errMsg))
}
return nil
}
// Delete removes credentials from the keychain.
func (h Osxkeychain) Delete(serverURL string) error {
s, err := splitServer(serverURL)
if err != nil {
return err
}
defer freeServer(s)
errMsg := C.keychain_delete(s)
if errMsg != nil {
defer C.free(unsafe.Pointer(errMsg))
return errors.New(C.GoString(errMsg))
}
return nil
}
// Get returns the username and secret to use for a given registry server URL.
func (h Osxkeychain) Get(serverURL string) (string, string, error) {
s, err := splitServer(serverURL)
if err != nil {
return "", "", err
}
defer freeServer(s)
var usernameLen C.uint
var username *C.char
var secretLen C.uint
var secret *C.char
defer C.free(unsafe.Pointer(username))
defer C.free(unsafe.Pointer(secret))
errMsg := C.keychain_get(s, &usernameLen, &username, &secretLen, &secret)
if errMsg != nil {
defer C.free(unsafe.Pointer(errMsg))
goMsg := C.GoString(errMsg)
if goMsg == errCredentialsNotFound {
return "", "", credentials.NewErrCredentialsNotFound()
}
if goMsg == errInteractionNotAllowed {
return "", "", ErrInteractionNotAllowed
}
return "", "", errors.New(goMsg)
}
user := C.GoStringN(username, C.int(usernameLen))
pass := C.GoStringN(secret, C.int(secretLen))
return user, pass, nil
}
// List returns the stored URLs and corresponding usernames.
func (h Osxkeychain) List() (map[string]string, error) {
credsLabelC := C.CString(credentials.CredsLabel)
defer C.free(unsafe.Pointer(credsLabelC))
var pathsC **C.char
defer C.free(unsafe.Pointer(pathsC))
var acctsC **C.char
defer C.free(unsafe.Pointer(acctsC))
var listLenC C.uint
errMsg := C.keychain_list(credsLabelC, &pathsC, &acctsC, &listLenC)
defer C.freeListData(&pathsC, listLenC)
defer C.freeListData(&acctsC, listLenC)
if errMsg != nil {
defer C.free(unsafe.Pointer(errMsg))
goMsg := C.GoString(errMsg)
if goMsg == errCredentialsNotFound {
return make(map[string]string), nil
}
if goMsg == errInteractionNotAllowed {
return nil, ErrInteractionNotAllowed
}
return nil, errors.New(goMsg)
}
var listLen int
listLen = int(listLenC)
pathTmp := (*[1 << 30]*C.char)(unsafe.Pointer(pathsC))[:listLen:listLen]
acctTmp := (*[1 << 30]*C.char)(unsafe.Pointer(acctsC))[:listLen:listLen]
//taking the array of c strings into go while ignoring all the stuff irrelevant to credentials-helper
resp := make(map[string]string)
for i := 0; i < listLen; i++ {
if C.GoString(pathTmp[i]) == "0" {
continue
}
resp[C.GoString(pathTmp[i])] = C.GoString(acctTmp[i])
}
return resp, nil
}
func splitServer(serverURL string) (*C.struct_Server, error) {
u, err := registryurl.Parse(serverURL)
if err != nil {
return nil, err
}
proto := C.kSecProtocolTypeHTTPS
if u.Scheme == "http" {
proto = C.kSecProtocolTypeHTTP
}
var port int
p := registryurl.GetPort(u)
if p != "" {
port, err = strconv.Atoi(p)
if err != nil {
return nil, err
}
}
return &C.struct_Server{
proto: C.SecProtocolType(proto),
host: C.CString(registryurl.GetHostname(u)),
port: C.uint(port),
path: C.CString(u.Path),
}, nil
}
func freeServer(s *C.struct_Server) {
C.free(unsafe.Pointer(s.host))
C.free(unsafe.Pointer(s.path))
}
|
