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Lint: Fix several linter advices

Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2019-11-28 23:52:35 +01:00
parent 6a20dff463
commit d063216324
Signed by: luzifer
GPG key ID: DC2729FDD34BE99E
2 changed files with 38 additions and 36 deletions

25
main.go
View file

@ -121,8 +121,10 @@ func main() {
}
config := &ssh.ClientConfig{
User: cfg.RemoteUser,
Auth: []ssh.AuthMethod{privateKey},
User: cfg.RemoteUser,
Auth: []ssh.AuthMethod{privateKey},
//#nosec G106 // For now no validation is supported
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}
@ -212,15 +214,14 @@ func main() {
sigC <- syscall.SIGINT
}()
for {
select {
case <-sigC:
log.Info("Signal triggered, shutting down")
if err := session.Signal(ssh.SIGHUP); err != nil {
log.WithError(err).Error("Unable to send TERM signal to remote process")
}
running = false
return
}
// Wait for signal to occur
<-sigC
// Do a proper teardown
log.Info("Signal triggered, shutting down")
running = false
if err := session.Signal(ssh.SIGHUP); err != nil {
log.WithError(err).Error("Unable to send TERM signal to remote process")
}
}

View file

@ -3,19 +3,18 @@ package main
import (
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"github.com/pkg/errors"
"golang.org/x/crypto/ssh"
)
func signerFromPem(pemBytes []byte, password []byte) (ssh.Signer, error) {
var err error
// read pem block
err := errors.New("Pem decode failed, no key found")
pemBlock, _ := pem.Decode(pemBytes)
if pemBlock == nil {
return nil, err
return nil, errors.New("Pem decode failed, no key found")
}
// handle encrypted key
@ -23,7 +22,7 @@ func signerFromPem(pemBytes []byte, password []byte) (ssh.Signer, error) {
// decrypt PEM
pemBlock.Bytes, err = x509.DecryptPEMBlock(pemBlock, password)
if err != nil {
return nil, fmt.Errorf("Decrypting PEM block failed %v", err)
return nil, errors.Wrap(err, "Decrypting PEM block failed")
}
// get RSA, EC or DSA key
@ -35,45 +34,47 @@ func signerFromPem(pemBytes []byte, password []byte) (ssh.Signer, error) {
// generate signer instance from key
signer, err := ssh.NewSignerFromKey(key)
if err != nil {
return nil, fmt.Errorf("Creating signer from encrypted key failed %v", err)
}
return signer, nil
} else {
// generate signer instance from plain key
signer, err := ssh.ParsePrivateKey(pemBytes)
if err != nil {
return nil, fmt.Errorf("Parsing plain private key failed %v", err)
return nil, errors.Wrap(err, "Creating signer from encrypted key failed")
}
return signer, nil
}
// generate signer instance from plain key
signer, err := ssh.ParsePrivateKey(pemBytes)
if err != nil {
return nil, errors.Wrap(err, "Parsing plain private key failed")
}
return signer, nil
}
func parsePemBlock(block *pem.Block) (interface{}, error) {
switch block.Type {
case "RSA PRIVATE KEY":
key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, fmt.Errorf("Parsing PKCS private key failed %v", err)
} else {
return key, nil
return nil, errors.Wrap(err, "Parsing PKCS private key failed")
}
return key, nil
case "EC PRIVATE KEY":
key, err := x509.ParseECPrivateKey(block.Bytes)
if err != nil {
return nil, fmt.Errorf("Parsing EC private key failed %v", err)
} else {
return key, nil
return nil, errors.Wrap(err, "Parsing EC private key failed")
}
return key, nil
case "DSA PRIVATE KEY":
key, err := ssh.ParseDSAPrivateKey(block.Bytes)
if err != nil {
return nil, fmt.Errorf("Parsing DSA private key failed %v", err)
} else {
return key, nil
return nil, errors.Wrap(err, "Parsing DSA private key failed")
}
return key, nil
default:
return nil, fmt.Errorf("Parsing private key failed, unsupported key type %q", block.Type)
return nil, errors.Errorf("Parsing private key failed, unsupported key type %q", block.Type)
}
}