packer-cn/common/guestexec/guest_commands.go

87 lines
2.3 KiB
Go

package guestexec
import (
"fmt"
"strings"
)
const UnixOSType = "unix"
const WindowsOSType = "windows"
const DefaultOSType = UnixOSType
type guestOSTypeCommand struct {
chmod string
mkdir string
removeDir string
statPath string
mv string
}
var guestOSTypeCommands = map[string]guestOSTypeCommand{
UnixOSType: {
chmod: "chmod %s '%s'",
mkdir: "mkdir -p '%s'",
removeDir: "rm -rf '%s'",
statPath: "stat '%s'",
mv: "mv '%s' '%s'",
},
WindowsOSType: {
chmod: "echo 'skipping chmod %s %s'", // no-op
mkdir: "powershell.exe -Command \"New-Item -ItemType directory -Force -ErrorAction SilentlyContinue -Path %s\"",
removeDir: "powershell.exe -Command \"rm %s -recurse -force\"",
statPath: "powershell.exe -Command { if (test-path %s) { exit 0 } else { exit 1 } }",
mv: "powershell.exe -Command \"mv %s %s -force\"",
},
}
type GuestCommands struct {
GuestOSType string
Sudo bool
}
func NewGuestCommands(osType string, sudo bool) (*GuestCommands, error) {
_, ok := guestOSTypeCommands[osType]
if !ok {
return nil, fmt.Errorf("Invalid osType: \"%s\"", osType)
}
return &GuestCommands{GuestOSType: osType, Sudo: sudo}, nil
}
func (g *GuestCommands) Chmod(path string, mode string) string {
return g.sudo(fmt.Sprintf(g.commands().chmod, mode, g.escapePath(path)))
}
func (g *GuestCommands) CreateDir(path string) string {
return g.sudo(fmt.Sprintf(g.commands().mkdir, g.escapePath(path)))
}
func (g *GuestCommands) RemoveDir(path string) string {
return g.sudo(fmt.Sprintf(g.commands().removeDir, g.escapePath(path)))
}
func (g *GuestCommands) commands() guestOSTypeCommand {
return guestOSTypeCommands[g.GuestOSType]
}
func (g *GuestCommands) escapePath(path string) string {
if g.GuestOSType == WindowsOSType {
return strings.Replace(path, " ", "` ", -1)
}
return path
}
func (g *GuestCommands) StatPath(path string) string {
return g.sudo(fmt.Sprintf(g.commands().statPath, g.escapePath(path)))
}
func (g *GuestCommands) MovePath(srcPath string, dstPath string) string {
return g.sudo(fmt.Sprintf(g.commands().mv, g.escapePath(srcPath), g.escapePath(dstPath)))
}
func (g *GuestCommands) sudo(cmd string) string {
if g.GuestOSType == UnixOSType && g.Sudo {
return "sudo " + cmd
}
return cmd
}