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193 lines
5.5 KiB
Go
193 lines
5.5 KiB
Go
package cmd
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import (
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"os"
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"os/signal"
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"path"
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"strings"
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"syscall"
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"time"
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"github.com/spf13/cobra"
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myssh "github.com/webmeisterei/lql_api/internal/ssh"
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"github.com/webmeisterei/lql_api/lql"
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"golang.org/x/crypto/ssh"
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"golang.org/x/crypto/ssh/agent"
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log "github.com/sirupsen/logrus"
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)
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func init() {
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sshClientLimit := 0
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sshClientCmd.Flags().StringP("socket", "s", "/opt/omd/sites/{site}/tmp/run/live", "Socket on the Server")
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sshClientCmd.Flags().BoolP("debug", "d", false, "Enable Debug on stderr")
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sshClientCmd.Flags().StringP("ssh-user", "U", "root", "SSH User")
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sshClientCmd.Flags().StringP("ssh-keyfile", "k", "~/.ssh/id_rsa", "Keyfile")
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sshClientCmd.Flags().StringP("ssh-password", "p", "", "Password")
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sshClientCmd.Flags().StringP("format", "f", "jsonparsed", "Format one of: python, python3, json, csv, CSV, jsonparsed (default is jsonparsed, I parse json from the server)")
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sshClientCmd.Flags().StringP("table", "t", "", "Produce a GET request for the given table (default: supply request by stdin)")
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sshClientCmd.Flags().StringArrayP("columns", "c", []string{""}, "Columns to show from the given table, this is required if you give a table!")
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sshClientCmd.Flags().StringP("user", "u", "", "LQL user to limit this on")
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sshClientCmd.Flags().IntVarP(&sshClientLimit, "limit", "l", 0, "Limit request lines")
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rootCmd.AddCommand(sshClientCmd)
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}
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var sshClientCmd = &cobra.Command{
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Use: "sshclient [site] [server]",
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Short: "SSH LQL Client",
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Long: `SSH LQL Client
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This version connects to the Check_MK Server by SSH.
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If you don't provide ssh-keyfile and ssh-password I will use your local agent.
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`,
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Args: cobra.ExactArgs(2),
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Run: func(cmd *cobra.Command, args []string) {
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sReplacer := strings.NewReplacer("{site}", args[1])
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destSocket := sReplacer.Replace(cmd.Flag("socket").Value.String())
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localSocket := path.Join(os.TempDir(), "lql-client.sock")
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var tunnel *myssh.Tunnel
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var lqlClient *lql.Client
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logger := log.New()
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logger.SetOutput(os.Stderr)
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if !cmd.Flag("debug").Changed {
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logger.SetLevel(log.InfoLevel)
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} else {
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logger.SetLevel(log.TraceLevel)
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}
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logger.WithFields(log.Fields{"destSocket": destSocket, "localSocket": localSocket}).Debug("Sockets")
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var msg string
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stat, _ := os.Stdin.Stat()
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if (stat.Mode() & os.ModeCharDevice) == 0 {
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stdinBuff, err := ioutil.ReadAll(os.Stdin)
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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logger.WithField("request", string(stdinBuff)).Debug("Got a request from stdin")
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msg = string(stdinBuff) + "\n"
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} else if cmd.Flag("table").Changed {
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if !cmd.Flag("columns").Changed {
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logger.Error("Columns is required if you want to query a table")
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return
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}
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columns, err := cmd.Flags().GetStringArray("columns")
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if err != nil {
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logger.Error("Failed to parse columns flag")
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return
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}
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msg = fmt.Sprintf("GET %s\n", cmd.Flag("table").Value.String())
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msg += fmt.Sprintf("Columns: %s\n", strings.Join(columns, " "))
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} else {
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logger.Error("Entering data interactive is not supported yet")
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return
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}
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sigc := make(chan os.Signal, 1)
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signal.Notify(sigc, os.Interrupt, os.Kill, syscall.SIGTERM)
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go func(c chan os.Signal) {
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// Wait for a SIGINT or SIGKILL:
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sig := <-c
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logger.WithFields(log.Fields{"signal": sig}).Info("Caught signal shutting down.")
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// Stop listening (and unlink the socket if unix type):
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if lqlClient != nil {
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lqlClient.Close()
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}
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if tunnel != nil {
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tunnel.Close()
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}
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os.Exit(1)
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}(sigc)
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if cmd.Flag("ssh-password").Changed {
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tunnel = myssh.NewTunnel(
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fmt.Sprintf("%s@%s", cmd.Flag("ssh-user").Value.String(), args[1]),
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[]ssh.AuthMethod{ssh.Password(cmd.Flag("ssh-password").Value.String())},
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localSocket,
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destSocket,
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)
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} else if cmd.Flag("ssh-password").Changed {
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tunnel = myssh.NewTunnel(
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fmt.Sprintf("%s@%s", cmd.Flag("ssh-user").Value.String(), args[1]),
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[]ssh.AuthMethod{myssh.PrivateKeyFile(cmd.Flag("ssh-keyfile").Value.String())},
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localSocket,
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destSocket,
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)
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} else {
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conn, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK"))
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if err != nil {
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log.Fatal(err)
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}
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defer conn.Close()
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ag := agent.NewClient(conn)
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auths := []ssh.AuthMethod{ssh.PublicKeysCallback(ag.Signers)}
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tunnel = myssh.NewTunnel(
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fmt.Sprintf("%s@%s", cmd.Flag("ssh-user").Value.String(), args[1]),
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auths,
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localSocket,
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destSocket,
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)
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}
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tunnel.SetLogger(logger)
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go tunnel.Start()
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defer tunnel.Close()
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time.Sleep(500 * time.Millisecond)
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lqlClient, err := lql.NewClient(1, 1, "unix", localSocket)
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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defer lqlClient.Close()
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lqlClient.SetLogger(logger)
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limit, err := cmd.Flags().GetInt("limit")
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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format, err := cmd.Flags().GetString("format")
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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if format != "jsonparsed" {
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result, err := lqlClient.RequestRaw(context.TODO(), msg, format, cmd.Flag("user").Value.String(), limit)
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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os.Stdout.Write(result)
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os.Stdout.Write([]byte{'\n'})
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return
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}
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result, err := lqlClient.Request(context.TODO(), msg, cmd.Flag("user").Value.String(), limit)
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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json, err := json.Marshal(result)
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if err != nil {
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logger.WithField("error", err).Error()
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return
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}
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os.Stdout.Write(json)
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os.Stdout.Write([]byte{'\n'})
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},
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}
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