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main.go
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package main
import (
"log"
"os"
"strconv"
"time"
easyssh "github.com/appleboy/easyssh-proxy"
"github.com/joho/godotenv"
"github.com/urfave/cli/v2"
)
// Version set at compile-time
var Version string
func main() {
// Load env-file if it exists first
if filename, found := os.LookupEnv("PLUGIN_ENV_FILE"); found {
_ = godotenv.Load(filename)
}
if _, err := os.Stat("/run/drone/env"); err == nil {
_ = godotenv.Overload("/run/drone/env")
}
app := cli.NewApp()
app.Name = "Drone SSH"
app.Usage = "Executing remote ssh commands"
app.Copyright = "Copyright (c) " + strconv.Itoa(time.Now().Year()) + " Bo-Yi Wu"
app.Authors = []*cli.Author{
{
Name: "Bo-Yi Wu",
Email: "[email protected]",
},
}
app.Action = run
app.Version = Version
app.Flags = []cli.Flag{
&cli.StringSliceFlag{
Name: "host",
Aliases: []string{"H"},
Usage: "connect to host",
EnvVars: []string{"PLUGIN_HOST", "SSH_HOST", "INPUT_HOST"},
FilePath: ".host",
},
&cli.IntFlag{
Name: "port",
Aliases: []string{"p"},
Usage: "connect to port",
EnvVars: []string{"PLUGIN_PORT", "SSH_PORT", "INPUT_PORT"},
Value: 22,
},
&cli.StringFlag{
Name: "protocol",
Usage: "The IP protocol to use. Valid values are \"tcp\". \"tcp4\" or \"tcp6\". Default to tcp.",
EnvVars: []string{"PLUGIN_PROTOCOL", "SSH_PROTOCOL", "INPUT_PROTOCOL"},
Value: "tcp",
},
&cli.StringFlag{
Name: "username",
Aliases: []string{"user", "u"},
Usage: "connect as user",
EnvVars: []string{"PLUGIN_USERNAME", "PLUGIN_USER", "SSH_USERNAME", "INPUT_USERNAME"},
Value: "root",
},
&cli.StringFlag{
Name: "password",
Aliases: []string{"P"},
Usage: "user password",
EnvVars: []string{"PLUGIN_PASSWORD", "SSH_PASSWORD", "INPUT_PASSWORD"},
},
&cli.DurationFlag{
Name: "timeout",
Aliases: []string{"t"},
Usage: "connection timeout",
EnvVars: []string{"PLUGIN_TIMEOUT", "SSH_TIMEOUT", "INPUT_TIMEOUT"},
Value: 30 * time.Second,
},
&cli.StringFlag{
Name: "ssh-key",
Usage: "private ssh key",
EnvVars: []string{"PLUGIN_SSH_KEY", "PLUGIN_KEY", "SSH_KEY", "INPUT_KEY"},
},
&cli.StringFlag{
Name: "ssh-passphrase",
Usage: "The purpose of the passphrase is usually to encrypt the private key.",
EnvVars: []string{"PLUGIN_SSH_PASSPHRASE", "PLUGIN_PASSPHRASE", "SSH_PASSPHRASE", "INPUT_PASSPHRASE"},
},
&cli.StringFlag{
Name: "key-path",
Aliases: []string{"i"},
Usage: "ssh private key path",
EnvVars: []string{"PLUGIN_KEY_PATH", "SSH_KEY_PATH", "INPUT_KEY_PATH"},
},
&cli.StringSliceFlag{
Name: "ciphers",
Usage: "The allowed cipher algorithms. If unspecified then a sensible",
EnvVars: []string{"PLUGIN_CIPHERS", "SSH_CIPHERS", "INPUT_CIPHERS"},
},
&cli.BoolFlag{
Name: "useInsecureCipher",
Usage: "include more ciphers with use_insecure_cipher",
EnvVars: []string{"PLUGIN_USE_INSECURE_CIPHER", "SSH_USE_INSECURE_CIPHER", "INPUT_USE_INSECURE_CIPHER"},
},
&cli.StringFlag{
Name: "fingerprint",
Usage: "fingerprint SHA256 of the host public key, default is to skip verification",
EnvVars: []string{"PLUGIN_FINGERPRINT", "SSH_FINGERPRINT", "INPUT_FINGERPRINT"},
},
&cli.BoolFlag{
Name: "sync",
Usage: "sync mode",
EnvVars: []string{"PLUGIN_SYNC", "INPUT_SYNC"},
},
&cli.DurationFlag{
Name: "command.timeout",
Aliases: []string{"T"},
Usage: "command timeout",
EnvVars: []string{"PLUGIN_COMMAND_TIMEOUT", "SSH_COMMAND_TIMEOUT", "INPUT_COMMAND_TIMEOUT"},
Value: 10 * time.Minute,
},
&cli.StringSliceFlag{
Name: "script",
Aliases: []string{"s"},
Usage: "execute commands",
EnvVars: []string{"PLUGIN_SCRIPT", "SSH_SCRIPT"},
},
&cli.StringFlag{
Name: "script.string",
Usage: "execute single commands for github action",
EnvVars: []string{"INPUT_SCRIPT"},
},
&cli.BoolFlag{
Name: "script.stop",
Usage: "stop script after first failure",
EnvVars: []string{"PLUGIN_SCRIPT_STOP", "INPUT_SCRIPT_STOP"},
},
&cli.StringFlag{
Name: "proxy.host",
Usage: "connect to host of proxy",
EnvVars: []string{"PLUGIN_PROXY_HOST", "PROXY_SSH_HOST", "INPUT_PROXY_HOST"},
},
&cli.StringFlag{
Name: "proxy.port",
Usage: "connect to port of proxy",
EnvVars: []string{"PLUGIN_PROXY_PORT", "PROXY_SSH_PORT", "INPUT_PROXY_PORT"},
Value: "22",
},
&cli.StringFlag{
Name: "proxy.protocol",
Usage: "The IP protocol to use for the proxy. Valid values are \"tcp\". \"tcp4\" or \"tcp6\". Default to tcp.",
EnvVars: []string{"PLUGIN_PROXY_PROTOCOL", "SSH_PROXY_PROTOCOL", "INPUT_PROXY_PROTOCOL"},
Value: "tcp",
},
&cli.StringFlag{
Name: "proxy.username",
Usage: "connect as user of proxy",
EnvVars: []string{"PLUGIN_PROXY_USERNAME", "PLUGIN_PROXY_USER", "PROXY_SSH_USERNAME", "INPUT_PROXY_USERNAME"},
Value: "root",
},
&cli.StringFlag{
Name: "proxy.password",
Usage: "user password of proxy",
EnvVars: []string{"PLUGIN_PROXY_PASSWORD", "PROXY_SSH_PASSWORD", "INPUT_PROXY_PASSWORD"},
},
&cli.StringFlag{
Name: "proxy.ssh-key",
Usage: "private ssh key of proxy",
EnvVars: []string{"PLUGIN_PROXY_SSH_KEY", "PLUGIN_PROXY_KEY", "PROXY_SSH_KEY", "INPUT_PROXY_KEY"},
},
&cli.StringFlag{
Name: "proxy.ssh-passphrase",
Usage: "The purpose of the passphrase is usually to encrypt the private key.",
EnvVars: []string{"PLUGIN_PROXY_SSH_PASSPHRASE", "PLUGIN_PROXY_PASSPHRASE", "PROXY_SSH_PASSPHRASE", "INPUT_PROXY_PASSPHRASE"},
},
&cli.StringFlag{
Name: "proxy.key-path",
Usage: "ssh private key path of proxy",
EnvVars: []string{"PLUGIN_PROXY_KEY_PATH", "PROXY_SSH_KEY_PATH", "INPUT_PROXY_KEY_PATH"},
},
&cli.DurationFlag{
Name: "proxy.timeout",
Usage: "proxy connection timeout",
EnvVars: []string{"PLUGIN_PROXY_TIMEOUT", "PROXY_SSH_TIMEOUT", "INPUT_PROXY_TIMEOUT"},
},
&cli.StringSliceFlag{
Name: "proxy.ciphers",
Usage: "The allowed cipher algorithms. If unspecified then a sensible",
EnvVars: []string{"PLUGIN_PROXY_CIPHERS", "PROXY_SSH_CIPHERS", "INPUT_PROXY_CIPHERS"},
},
&cli.BoolFlag{
Name: "proxy.useInsecureCipher",
Usage: "include more ciphers with use_insecure_cipher",
EnvVars: []string{"PLUGIN_PROXY_USE_INSECURE_CIPHER", "PROXY_SSH_USE_INSECURE_CIPHER", "INPUT_PROXY_USE_INSECURE_CIPHER"},
},
&cli.StringFlag{
Name: "proxy.fingerprint",
Usage: "fingerprint SHA256 of the host public key, default is to skip verification",
EnvVars: []string{"PLUGIN_PROXY_FINGERPRINT", "PROXY_SSH_FINGERPRINT", "PROXY_FINGERPRINT", "INPUT_PROXY_FINGERPRINT"},
},
&cli.StringSliceFlag{
Name: "envs",
Usage: "pass environment variable to shell script",
EnvVars: []string{"PLUGIN_ENVS", "INPUT_ENVS"},
},
&cli.BoolFlag{
Name: "debug",
Usage: "debug mode",
EnvVars: []string{"PLUGIN_DEBUG", "INPUT_DEBUG"},
},
&cli.StringFlag{
Name: "envs.format",
Usage: "flexible configuration of environment value transfer",
EnvVars: []string{"PLUGIN_ENVS_FORMAT", "INPUT_ENVS_FORMAT"},
Value: envsFormat,
},
&cli.BoolFlag{
Name: "allenvs",
Usage: "pass all environment variable to shell script",
EnvVars: []string{"PLUGIN_ALLENVS", "INPUT_ALLENVS"},
},
&cli.BoolFlag{
Name: "request-pty",
Usage: "request a pseudo-terminal from the server",
EnvVars: []string{"PLUGIN_REQUEST_PTY", "INPUT_REQUEST_PTY"},
},
}
// Override a template
cli.AppHelpTemplate = `
________ _________ _________ ___ ___
\______ \_______ ____ ____ ____ / _____// _____// | \
| | \_ __ \/ _ \ / \_/ __ \ ______ \_____ \ \_____ \/ ~ \
| | \ | \( <_> ) | \ ___/ /_____/ / \/ \ Y /
/_______ /__| \____/|___| /\___ > /_______ /_______ /\___|_ /
\/ \/ \/ \/ \/ \/
version: {{.Version}}
NAME:
{{.Name}} - {{.Usage}}
USAGE:
{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}
{{if len .Authors}}
AUTHOR:
{{range .Authors}}{{ . }}{{end}}
{{end}}{{if .Commands}}
COMMANDS:
{{range .Commands}}{{if not .HideHelp}} {{join .Names ", "}}{{ "\t"}}{{.Usage}}{{ "\n" }}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
GLOBAL OPTIONS:
{{range .VisibleFlags}}{{.}}
{{end}}{{end}}{{if .Copyright }}
COPYRIGHT:
{{.Copyright}}
{{end}}{{if .Version}}
VERSION:
{{.Version}}
{{end}}
REPOSITORY:
Github: https://github.com/appleboy/drone-ssh
`
if err := app.Run(os.Args); err != nil {
log.Fatal(err)
}
}
func run(c *cli.Context) error {
scripts := c.StringSlice("script")
if s := c.String("script.string"); s != "" {
scripts = append(scripts, s)
}
plugin := Plugin{
Config: Config{
Key: c.String("ssh-key"),
KeyPath: c.String("key-path"),
Username: c.String("user"),
Password: c.String("password"),
Passphrase: c.String("ssh-passphrase"),
Fingerprint: c.String("fingerprint"),
Host: c.StringSlice("host"),
Port: c.Int("port"),
Protocol: easyssh.Protocol(c.String("protocol")),
Timeout: c.Duration("timeout"),
CommandTimeout: c.Duration("command.timeout"),
Script: scripts,
ScriptStop: c.Bool("script.stop"),
Envs: c.StringSlice("envs"),
EnvsFormat: c.String("envs.format"),
Debug: c.Bool("debug"),
Sync: c.Bool("sync"),
Ciphers: c.StringSlice("ciphers"),
UseInsecureCipher: c.Bool("useInsecureCipher"),
AllEnvs: c.Bool("allenvs"),
RequireTty: c.Bool("request-pty"),
Proxy: easyssh.DefaultConfig{
Key: c.String("proxy.ssh-key"),
KeyPath: c.String("proxy.key-path"),
User: c.String("proxy.username"),
Password: c.String("proxy.password"),
Passphrase: c.String("proxy.ssh-passphrase"),
Fingerprint: c.String("proxy.fingerprint"),
Server: c.String("proxy.host"),
Port: c.String("proxy.port"),
Protocol: easyssh.Protocol(c.String("proxy.protocol")),
Timeout: c.Duration("proxy.timeout"),
Ciphers: c.StringSlice("proxy.ciphers"),
UseInsecureCipher: c.Bool("proxy.useInsecureCipher"),
},
},
Writer: os.Stdout,
}
return plugin.Exec()
}