/
main.go
64 lines (56 loc) · 1.73 KB
/
main.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
package ssh
import (
"context"
"fmt"
"net"
"strings"
"github.com/Azure/azure-sdk-for-go/sdk/azcore"
"github.com/Azure/azure-sdk-for-go/sdk/keyvault/azsecrets"
"golang.org/x/crypto/ssh"
)
func GetSSHPrivateKey(cred azcore.TokenCredential, vaultName, keyPrefix string) (*azsecrets.GetSecretResponse, error) {
if vaultName == "" {
return nil, fmt.Errorf("vault name must not be empty")
}
// Establish a connection to the Key Vault client
client, _ := azsecrets.NewClient(fmt.Sprintf("https://%s.vault.azure.net/", vaultName), cred, nil)
pager := client.NewListSecretsPager(nil)
for pager.More() {
page, err := pager.NextPage(context.TODO())
if err != nil {
return nil, fmt.Errorf("cannot paginate over secret list: %w", err)
}
for _, secret := range page.Value {
if strings.HasPrefix(secret.ID.Name(), keyPrefix) {
// Get a secret. An empty string version gets the latest version of the secret.
version := ""
resp, err := client.GetSecret(context.TODO(), secret.ID.Name(), version, nil)
if err != nil {
return nil, fmt.Errorf("failed to get the secret: %w", err)
}
return &resp, nil
}
}
}
return nil, fmt.Errorf("cannot find any private key")
}
func GetSSHCliConfig(userName string, privateKey []byte) (*ssh.ClientConfig, error) {
if userName == "" {
return nil, fmt.Errorf("user name must be set")
}
signer, err := ssh.ParsePrivateKey(privateKey)
if err != nil {
return nil, fmt.Errorf("Unable to parse private key: %v", err)
}
config := &ssh.ClientConfig{
User: userName,
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
// Always accept key.
return nil
},
}
return config, nil
}