54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package sshd
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import (
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"io/ioutil"
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"time"
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mdata "github.com/go-gost/core/metadata"
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mdutil "github.com/go-gost/core/metadata/util"
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"golang.org/x/crypto/ssh"
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)
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type metadata struct {
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handshakeTimeout time.Duration
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signer ssh.Signer
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keepalive bool
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keepaliveInterval time.Duration
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keepaliveTimeout time.Duration
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keepaliveRetries int
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}
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func (d *sshdDialer) parseMetadata(md mdata.Metadata) (err error) {
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const (
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handshakeTimeout = "handshakeTimeout"
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privateKeyFile = "privateKeyFile"
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passphrase = "passphrase"
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)
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if key := mdutil.GetString(md, privateKeyFile); key != "" {
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data, err := ioutil.ReadFile(key)
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if err != nil {
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return err
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}
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pp := mdutil.GetString(md, passphrase)
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if pp == "" {
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d.md.signer, err = ssh.ParsePrivateKey(data)
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} else {
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d.md.signer, err = ssh.ParsePrivateKeyWithPassphrase(data, []byte(pp))
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}
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if err != nil {
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return err
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}
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}
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d.md.handshakeTimeout = mdutil.GetDuration(md, handshakeTimeout)
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if d.md.keepalive = mdutil.GetBool(md, "keepalive"); d.md.keepalive {
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d.md.keepaliveInterval = mdutil.GetDuration(md, "ttl", "keepalive.interval")
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d.md.keepaliveTimeout = mdutil.GetDuration(md, "keepalive.timeout")
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d.md.keepaliveRetries = mdutil.GetInt(md, "keepalive.retries")
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}
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return
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}
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