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WIP SSH

main
Quentin 1 year ago
parent
commit
a8b9a43c02
  1. 6
      go.mod
  2. 26
      go.sum
  3. 124
      main.go

6
go.mod

@ -2,4 +2,8 @@ module git.deuxfleurs.fr/quentin/nuage
go 1.16
require github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7
require (
github.com/pkg/sftp v1.13.3
github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
)

26
go.sum

@ -1,7 +1,33 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dnaeon/go-vcr v1.0.1 h1:r8L/HqC0Hje5AXMu1ooW8oyQyOFv4GxqpL0nRP7SLLY=
github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyGc8n1E=
github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
github.com/pkg/sftp v1.13.3 h1:XFSVAvRDGUhzAJ8Ll0APzHx3NTCAnMGaAsd3yi+Oc9k=
github.com/pkg/sftp v1.13.3/go.mod h1:LzqnAvaD5TWeNBsZpfKxSYn1MbjWwOsCIAFFJbpIsK8=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7 h1:Do8ksLD4Nr3pA0x0hnLOLftZgkiTDvwPDShRTUxtXpE=
github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7/go.mod h1:CJJ5VAbozOl0yEw7nHB9+7BXTJbIn6h7W+f6Gau5IP8=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

124
main.go

@ -1,12 +1,17 @@
package main
import (
"bytes"
"io"
"io/ioutil"
"os"
"fmt"
"errors"
"time"
"golang.org/x/crypto/ssh"
"github.com/pkg/sftp"
"github.com/scaleway/scaleway-sdk-go/scw"
"github.com/scaleway/scaleway-sdk-go/api/instance/v1"
)
@ -134,8 +139,6 @@ func (i *action) getInstanceByName(zone scw.Zone, name string) (*instance.Server
return nil, instanceNotFound
}
func parseIP(s *instance.Server) string {
ip := "(no address)"
if s.PublicIP != nil {
@ -175,7 +178,7 @@ func (sp *spawner) onInstance(zone, machine, image, name string) error {
Name: name,
CommercialType: machine,
Image: image,
DynamicIPRequired: scw.BoolPtr(false),
DynamicIPRequired: scw.BoolPtr(true),
})
if err != nil {
return err
@ -247,6 +250,112 @@ func (dt *destroyer) onInstance(zone, machine, image, name string) error {
return nil
}
/**
* Runner
*/
type runner struct { action }
func (r *runner) onInstance(zone, machine, image, name string) error {
// Source script
if len(os.Args) < 3 {
return errors.New("Missing script to run on the command line")
}
src, err := os.Open(os.Args[2])
if err != nil {
return err
}
defer src.Close()
// Connect to the remote
z, err := scw.ParseZone(zone)
if err != nil {
return err
}
targetServer, err := r.getInstanceByName(z, name)
if err != nil {
return err
}
if targetServer.PublicIP == nil {
return errors.New("run failed: this instance has no public ip.")
}
ip := targetServer.PublicIP.Address
var hostKey ssh.PublicKey
key, err := ioutil.ReadFile(os.Getenv("HOME") + "/.ssh/id_rsa")
if err != nil {
return err
}
signer, err := ssh.ParsePrivateKey(key)
if err != nil {
return err
}
config := &ssh.ClientConfig{
User: "root",
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
HostKeyCallback: ssh.FixedHostKey(hostKey),
}
sshClient, err := ssh.Dial("tcp", ip.String()+":22", config)
if err != nil {
return err
}
defer sshClient.Close()
// Send our script to the destination
sftpClient, err := sftp.NewClient(sshClient)
if err != nil {
return err
}
defer sftpClient.Close()
dst, err := sftpClient.Create("/tmp/nuage")
if err != nil {
return err
}
defer dst.Close()
err = dst.Chmod(0755)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if err != nil {
return err
}
// Run the script
session, err := sshClient.NewSession()
if err != nil {
return err
}
defer session.Close()
var sshStdout, sshStderr bytes.Buffer
session.Stdout = &sshStdout
session.Stderr = &sshStderr
err = session.Run("/tmp/nuage")
if os.Getenv("VERBOSE") != "" {
fmt.Fprintf(os.Stdout, "logs for %v\n", name)
io.Copy(os.Stdout, &sshStdout)
io.Copy(os.Stderr, &sshStderr)
}
if err != nil {
return err
}
return nil
}
/**
* Commands
@ -264,7 +373,14 @@ func spawn() error {
}
func run() error {
return nil
r := runner{}
err := r.init()
if err != nil {
return err
}
err = passInstanceTo(os.Stdin, &r)
return err
}
func destroy() error {

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