/
host-keys.go
58 lines (51 loc) · 1.19 KB
/
host-keys.go
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package config
import (
"errors"
"fmt"
gliderssh "github.com/gliderlabs/ssh"
"github.com/rs/zerolog/log"
"github.com/wyvernzora/boggart/internal/config"
"golang.org/x/crypto/ssh"
"gopkg.in/yaml.v3"
)
type HostKeys struct {
Signers []gliderssh.Signer
}
func (k *HostKeys) UnmarshalYAML(node *yaml.Node) error {
var values []*yaml.Node
switch node.Kind {
case yaml.ScalarNode:
values = []*yaml.Node{node}
break
case yaml.SequenceNode:
values = node.Content
break
default:
return errors.New("host keys must be a string or array of strings")
}
k.Signers = make([]gliderssh.Signer, 0)
for _, key := range values {
signer, err := resolveHostKey(key)
if err != nil {
log.Error().Err(err).Msg("failed to parse host key")
continue
}
k.Signers = append(k.Signers, signer)
}
return nil
}
func (k *HostKeys) String() string {
return fmt.Sprintf("HostKeys{ ... }")
}
func resolveHostKey(node *yaml.Node) (ssh.Signer, error) {
data, err := config.ResolveFile(node)
log.Debug().Msg("loaded host key")
if err != nil {
return nil, err
}
signer, err := ssh.ParsePrivateKey(data)
if err != nil {
return nil, fmt.Errorf("failed to parse host key: %w", err)
}
return signer, nil
}