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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| //go:build !windows | ||
|
|
||
| package agent | ||
|
|
||
| import ( | ||
| "os" | ||
|
|
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| "golang.org/x/crypto/ssh" | ||
| gosshagent "golang.org/x/crypto/ssh/agent" | ||
| ) | ||
|
|
||
| func GetSSHAuthSocket() string { | ||
| sshAuthSocket := os.Getenv("SSH_AUTH_SOCK") | ||
| if sshAuthSocket != "" { | ||
| return sshAuthSocket | ||
| } | ||
|
|
||
| return "" | ||
| } | ||
|
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| func ForwardToRemote(client *ssh.Client, addr string) error { | ||
| return gosshagent.ForwardToRemote(client, addr) | ||
| } | ||
|
|
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| func RequestAgentForwarding(session *ssh.Session) error { | ||
| return gosshagent.RequestAgentForwarding(session) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package agent | ||
|
|
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| import ( | ||
| "io" | ||
| "os" | ||
| "sync" | ||
|
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| "github.com/pkg/errors" | ||
| "golang.org/x/crypto/ssh" | ||
| gosshagent "golang.org/x/crypto/ssh/agent" | ||
| "gopkg.in/natefinch/npipe.v2" | ||
| ) | ||
|
|
||
| const ( | ||
| channelType = "[email protected]" | ||
| defaultNamedPipe = "\\\\.\\pipe\\openssh-ssh-agent" | ||
| ) | ||
|
|
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| func GetSSHAuthSocket() string { | ||
| sshAuthSocket := os.Getenv("SSH_AUTH_SOCK") | ||
| if sshAuthSocket != "" { | ||
| return sshAuthSocket | ||
| } | ||
| if _, err := os.Stat(defaultNamedPipe); err == nil { | ||
| return defaultNamedPipe | ||
| } | ||
|
|
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| return "" | ||
| } | ||
|
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| func ForwardToRemote(client *ssh.Client, addr string) error { | ||
| channels := client.HandleChannelOpen(channelType) | ||
| if channels == nil { | ||
| return errors.New("agent: already have handler for " + channelType) | ||
| } | ||
| conn, err := npipe.Dial(addr) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| conn.Close() | ||
|
|
||
| go func() { | ||
| for ch := range channels { | ||
| channel, reqs, err := ch.Accept() | ||
| if err != nil { | ||
| continue | ||
| } | ||
| go ssh.DiscardRequests(reqs) | ||
| go forwardNamedPipe(channel, addr) | ||
| } | ||
| }() | ||
| return nil | ||
| } | ||
|
|
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| func RequestAgentForwarding(session *ssh.Session) error { | ||
| return gosshagent.RequestAgentForwarding(session) | ||
| } | ||
|
|
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| func forwardNamedPipe(channel ssh.Channel, addr string) { | ||
| conn, err := npipe.Dial(addr) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| var wg sync.WaitGroup | ||
| wg.Add(2) | ||
| go func() { | ||
| io.Copy(conn, channel) | ||
| wg.Done() | ||
| }() | ||
| go func() { | ||
| io.Copy(channel, conn) | ||
| channel.CloseWrite() | ||
| wg.Done() | ||
| }() | ||
|
|
||
| wg.Wait() | ||
| conn.Close() | ||
| channel.Close() | ||
| } |
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