120 lines
3.3 KiB
Go
120 lines
3.3 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// Prototype, git client looks like do not recognize req.Reply.
|
|
package ssh
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
|
|
"github.com/Unknwon/com"
|
|
|
|
"github.com/gogits/gogs/modules/crypto/ssh"
|
|
"github.com/gogits/gogs/modules/log"
|
|
)
|
|
|
|
func handleServerConn(keyId string, chans <-chan ssh.NewChannel) {
|
|
for newChan := range chans {
|
|
if newChan.ChannelType() != "session" {
|
|
newChan.Reject(ssh.UnknownChannelType, "unknown channel type")
|
|
continue
|
|
}
|
|
channel, requests, err := newChan.Accept()
|
|
if err != nil {
|
|
log.Error(3, "Could not accept channel: %v", err)
|
|
continue
|
|
}
|
|
|
|
go func(in <-chan *ssh.Request) {
|
|
defer channel.Close()
|
|
for req := range in {
|
|
ok, payload := false, strings.TrimLeft(string(req.Payload), "\x00&")
|
|
fmt.Println("Request:", req.Type, req.WantReply, payload)
|
|
if req.WantReply {
|
|
fmt.Println(req.Reply(true, nil))
|
|
}
|
|
switch req.Type {
|
|
case "env":
|
|
args := strings.Split(strings.Replace(payload, "\x00", "", -1), "\v")
|
|
if len(args) != 2 {
|
|
break
|
|
}
|
|
args[0] = strings.TrimLeft(args[0], "\x04")
|
|
_, _, err := com.ExecCmdBytes("env", args[0]+"="+args[1])
|
|
if err != nil {
|
|
log.Error(3, "env: %v", err)
|
|
channel.Stderr().Write([]byte(err.Error()))
|
|
break
|
|
}
|
|
ok = true
|
|
case "exec":
|
|
os.Setenv("SSH_ORIGINAL_COMMAND", strings.TrimLeft(payload, "'("))
|
|
log.Info("Payload: %v", strings.TrimLeft(payload, "'("))
|
|
cmd := exec.Command("/Users/jiahuachen/Applications/Go/src/github.com/gogits/gogs/gogs", "serv", "key-"+keyId)
|
|
cmd.Stdout = channel
|
|
cmd.Stdin = channel
|
|
cmd.Stderr = channel.Stderr()
|
|
if err := cmd.Run(); err != nil {
|
|
log.Error(3, "exec: %v", err)
|
|
} else {
|
|
ok = true
|
|
}
|
|
}
|
|
fmt.Println("Done:", ok)
|
|
}
|
|
fmt.Println("Done!!!")
|
|
}(requests)
|
|
}
|
|
}
|
|
|
|
func listen(config *ssh.ServerConfig, port string) {
|
|
listener, err := net.Listen("tcp", "0.0.0.0:"+port)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
for {
|
|
// Once a ServerConfig has been configured, connections can be accepted.
|
|
conn, err := listener.Accept()
|
|
if err != nil {
|
|
log.Error(3, "Fail to accept incoming connection: %v", err)
|
|
continue
|
|
}
|
|
// Before use, a handshake must be performed on the incoming net.Conn.
|
|
sConn, chans, reqs, err := ssh.NewServerConn(conn, config)
|
|
if err != nil {
|
|
log.Error(3, "Fail to handshake: %v", err)
|
|
continue
|
|
}
|
|
// The incoming Request channel must be serviced.
|
|
go ssh.DiscardRequests(reqs)
|
|
go handleServerConn(sConn.Permissions.Extensions["key-id"], chans)
|
|
}
|
|
}
|
|
|
|
// Listen starts a SSH server listens on given port.
|
|
func Listen(port string) {
|
|
config := &ssh.ServerConfig{
|
|
PublicKeyCallback: func(conn ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions, error) {
|
|
// keyCache[string(ssh.MarshalAuthorizedKey(key))] = 2
|
|
return &ssh.Permissions{Extensions: map[string]string{"key-id": "1"}}, nil
|
|
},
|
|
}
|
|
|
|
privateBytes, err := ioutil.ReadFile("/Users/jiahuachen/.ssh/id_rsa")
|
|
if err != nil {
|
|
panic("failed to load private key")
|
|
}
|
|
private, err := ssh.ParsePrivateKey(privateBytes)
|
|
if err != nil {
|
|
panic("failed to parse private key")
|
|
}
|
|
config.AddHostKey(private)
|
|
|
|
go listen(config, port)
|
|
}
|