easyssh-proxy provides a simple implementation of some SSH protocol features in Go.
This project is forked from easyssh but add some features as the following.
- Support plain text of user private key.
- Support key path of user private key.
- Support Timeout for the TCP connection to establish.
- Support SSH ProxyCommand.
+--------+ +----------+ +-----------+
| Laptop | <--> | Jumphost | <--> | FooServer |
+--------+ +----------+ +-----------+
OR
+--------+ +----------+ +-----------+
| Laptop | <--> | Firewall | <--> | FooServer |
+--------+ +----------+ +-----------+
192.168.1.5 121.1.2.3 10.10.29.68You can see ssh, scp, ProxyCommand on examples folder.
package main
import (
"fmt"
"time"
"github.com/appleboy/easyssh-proxy"
)
func main() {
// Create MakeConfig instance with remote username, server address and path to private key.
ssh := &easyssh.MakeConfig{
User: "appleboy",
Server: "example.com",
// Optional key or Password without either we try to contact your agent SOCKET
// Password: "password",
// Paste your source content of private key
// Key: `-----BEGIN RSA PRIVATE KEY-----
// MIIEpAIBAAKCAQEA4e2D/qPN08pzTac+a8ZmlP1ziJOXk45CynMPtva0rtK/RB26
// 7XC9wlRna4b3Ln8ew3q1ZcBjXwD4ppbTlmwAfQIaZTGJUgQbdsO9YA==
// -----END RSA PRIVATE KEY-----
// `,
KeyPath: "/Users/username/.ssh/id_rsa",
Port: "22",
Timeout: 60 * time.Second,
// Parse PrivateKey With Passphrase
Passphrase: "1234",
// Optional fingerprint SHA256 verification
// Get Fingerprint: ssh.FingerprintSHA256(key)
// Fingerprint: "SHA256:mVPwvezndPv/ARoIadVY98vAC0g+P/5633yTC4d/wXE"
// Enable the use of insecure ciphers and key exchange methods.
// This enables the use of the the following insecure ciphers and key exchange methods:
// - aes128-cbc
// - aes192-cbc
// - aes256-cbc
// - 3des-cbc
// - diffie-hellman-group-exchange-sha256
// - diffie-hellman-group-exchange-sha1
// Those algorithms are insecure and may allow plaintext data to be recovered by an attacker.
// UseInsecureCipher: true,
}
// Call Run method with command you want to run on remote server.
stdout, stderr, done, err := ssh.Run("ls -al", 60*time.Second)
// Handle errors
if err != nil {
panic("Can't run remote command: " + err.Error())
} else {
fmt.Println("don is :", done, "stdout is :", stdout, "; stderr is :", stderr)
}
}package main
import (
"fmt"
"github.com/appleboy/easyssh-proxy"
)
func main() {
// Create MakeConfig instance with remote username, server address and path to private key.
ssh := &easyssh.MakeConfig{
User: "appleboy",
Server: "example.com",
Password: "123qwe",
Port: "22",
}
// Call Scp method with file you want to upload to remote server.
// Please make sure the `tmp` floder exists.
err := ssh.Scp("/root/source.csv", "/tmp/target.csv")
// Handle errors
if err != nil {
panic("Can't run remote command: " + err.Error())
} else {
fmt.Println("success")
}
} ssh := &easyssh.MakeConfig{
User: "drone-scp",
Server: "localhost",
Port: "22",
KeyPath: "./tests/.ssh/id_rsa",
Proxy: easyssh.DefaultConfig{
User: "drone-scp",
Server: "localhost",
Port: "22",
KeyPath: "./tests/.ssh/id_rsa",
},
}func main() {
// Create MakeConfig instance with remote username, server address and path to private key.
ssh := &easyssh.MakeConfig{
Server: "localhost",
User: "drone-scp",
KeyPath: "./tests/.ssh/id_rsa",
Port: "22",
Timeout: 60 * time.Second,
}
// Call Run method with command you want to run on remote server.
stdoutChan, stderrChan, doneChan, errChan, err := ssh.Stream("for i in {1..5}; do echo ${i}; sleep 1; done; exit 2;", 60*time.Second)
// Handle errors
if err != nil {
panic("Can't run remote command: " + err.Error())
} else {
// read from the output channel until the done signal is passed
isTimeout := true
loop:
for {
select {
case isTimeout = <-doneChan:
break loop
case outline := <-stdoutChan:
fmt.Println("out:", outline)
case errline := <-stderrChan:
fmt.Println("err:", errline)
case err = <-errChan:
}
}
// get exit code or command error.
if err != nil {
fmt.Println("err: " + err.Error())
}
// command time out
if !isTimeout {
fmt.Println("Error: command timeout")
}
}
}
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