/
diego_proxy_authenticator.go
65 lines (53 loc) · 1.65 KB
/
diego_proxy_authenticator.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
package authenticators
import (
"bytes"
"regexp"
"strconv"
"code.cloudfoundry.org/lager/v3"
"golang.org/x/crypto/ssh"
)
var DiegoUserRegex *regexp.Regexp = regexp.MustCompile(`diego:([a-zA-Z0-9_-]+)/(\d+)`)
type DiegoProxyAuthenticator struct {
logger lager.Logger
credentials []byte
permissionsBuilder PermissionsBuilder
}
func NewDiegoProxyAuthenticator(
logger lager.Logger,
credentials []byte,
permissionsBuilder PermissionsBuilder,
) *DiegoProxyAuthenticator {
return &DiegoProxyAuthenticator{
logger: logger,
credentials: credentials,
permissionsBuilder: permissionsBuilder,
}
}
func (dpa *DiegoProxyAuthenticator) UserRegexp() *regexp.Regexp {
return DiegoUserRegex
}
func (dpa *DiegoProxyAuthenticator) Authenticate(metadata ssh.ConnMetadata, password []byte) (*ssh.Permissions, error) {
logger := dpa.logger.Session("diego-authenticate")
logger.Info("authenticate-starting")
defer logger.Info("authenticate-finished")
if !DiegoUserRegex.MatchString(metadata.User()) {
logger.Error("regex-match-fail", InvalidDomainErr)
return nil, InvalidDomainErr
}
if !bytes.Equal(dpa.credentials, password) {
logger.Error("invalid-credentials", InvalidCredentialsErr)
return nil, InvalidCredentialsErr
}
guidAndIndex := DiegoUserRegex.FindStringSubmatch(metadata.User())
processGuid := guidAndIndex[1]
index, err := strconv.Atoi(guidAndIndex[2])
if err != nil {
logger.Error("atoi-failed", err)
return nil, err
}
permissions, err := dpa.permissionsBuilder.Build(logger, processGuid, index, metadata)
if err != nil {
logger.Error("building-ssh-permissions-failed", err)
}
return permissions, err
}