/
ssh.go
126 lines (114 loc) · 3.47 KB
/
ssh.go
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// Copyright (c) 2016 by António Meireles <antonio.meireles@reformi.st>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package main
import (
"fmt"
"strings"
"github.com/TheNewNormal/corectl/components/host/session"
"github.com/TheNewNormal/corectl/components/server"
"github.com/TheNewNormal/corectl/components/server/connector"
"github.com/spf13/cobra"
)
var (
sshCmd = &cobra.Command{
Use: "ssh VMid [\"command1;...\"]",
Aliases: []string{"attach"},
Short: "Attach to or run commands inside a running CoreOS instance",
PreRunE: func(cmd *cobra.Command, args []string) (err error) {
session.Caller.CmdLine.BindPFlags(cmd.Flags())
if len(args) < 1 {
return fmt.Errorf("This command requires at least " +
"one argument to work ")
}
return
},
RunE: sshCommand,
Example: ` corectl ssh VMid // logins into VMid
corectl ssh VMid "some commands" // runs 'some commands' inside VMid and exits`,
}
scpCmd = &cobra.Command{
Use: "put path/to/file VMid:/file/path/on/destination",
Aliases: []string{"copy", "cp", "scp"},
Short: "copy file to inside VM",
PreRunE: func(cmd *cobra.Command, args []string) (err error) {
session.Caller.CmdLine.BindPFlags(cmd.Flags())
if len(args) < 2 {
return fmt.Errorf("This command requires at least " +
"two argument to work ")
}
return
},
RunE: scpCommand,
Example: ` // copies 'filePath' into '/destinationPath' inside VMid
corectl put filePath VMid:/destinationPath`,
}
)
func sshCommand(cmd *cobra.Command, args []string) (err error) {
var (
sshSession = &connector.SSHclient{}
vm *server.VMInfo
)
if vm, err = vmInfo(args[0]); err != nil {
return
}
sshSession, err =
connector.StartSSHsession(vm.PublicIP, vm.InternalSSHprivate)
if err != nil {
return
}
defer sshSession.Close()
if len(args) > 1 {
return sshSession.ExecuteRemoteCommand(strings.Join(args[1:], " "))
}
return sshSession.RemoteShell()
}
func vmInfo(id string) (vm *server.VMInfo, err error) {
var reply = &server.RPCreply{}
if _, err = server.Daemon.Running(); err != nil {
err = session.ErrServerUnreachable
return
}
if reply, err =
server.RPCQuery("ActiveVMs", &server.RPCquery{}); err != nil {
return
}
running := reply.Running
for _, v := range running {
if v.Name == id || v.UUID == id {
return v, err
}
}
return vm, fmt.Errorf("'%s' not found, or dead", id)
}
func scpCommand(cmd *cobra.Command, args []string) (err error) {
var (
session, vm = &connector.SSHclient{}, &server.VMInfo{}
split = strings.Split(args[1], ":")
source, destination, target = args[0], split[1], split[0]
)
if vm, err = vmInfo(target); err != nil {
return
}
if session, err = connector.StartSSHsession(vm.PublicIP, vm.InternalSSHprivate); err != nil {
return
}
defer session.Close()
return session.SCoPy(source, destination, target)
}
func init() {
if session.AppName() != "corectld" {
rootCmd.AddCommand(sshCmd, scpCmd)
}
}