1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/contrib/apparmor/main.go
Jessica Frazelle 8cf89245f5
change default docker-engine profile to a template based on apparmor_parser version
Signed-off-by: Jessica Frazelle <acidburn@docker.com>
2015-10-19 16:15:18 -07:00

85 lines
1.9 KiB
Go

package main
import (
"fmt"
"log"
"os"
"os/exec"
"path"
"strconv"
"strings"
"text/template"
)
type profileData struct {
MajorVersion int
MinorVersion int
}
func main() {
if len(os.Args) < 2 {
log.Fatal("pass a filename to save the profile in.")
}
// parse the arg
apparmorProfilePath := os.Args[1]
// get the apparmor_version version
cmd := exec.Command("/sbin/apparmor_parser", "--version")
output, err := cmd.CombinedOutput()
if err != nil {
log.Fatalf("getting apparmor_parser version failed: %s (%s)", err, output)
}
// parse the version from the output
// output is in the form of the following:
// AppArmor parser version 2.9.1
// Copyright (C) 1999-2008 Novell Inc.
// Copyright 2009-2012 Canonical Ltd.
lines := strings.SplitN(string(output), "\n", 2)
words := strings.Split(lines[0], " ")
version := words[len(words)-1]
// split by major minor version
v := strings.Split(version, ".")
if len(v) < 2 {
log.Fatalf("parsing major minor version failed for %q", version)
}
majorVersion, err := strconv.Atoi(v[0])
if err != nil {
log.Fatal(err)
}
minorVersion, err := strconv.Atoi(v[1])
if err != nil {
log.Fatal(err)
}
data := profileData{
MajorVersion: majorVersion,
MinorVersion: minorVersion,
}
fmt.Printf("apparmor_parser is of version %+v\n", data)
// parse the template
compiled, err := template.New("apparmor_profile").Parse(dockerProfileTemplate)
if err != nil {
log.Fatalf("parsing template failed: %v", err)
}
// make sure /etc/apparmor.d exists
if err := os.MkdirAll(path.Dir(apparmorProfilePath), 0755); err != nil {
log.Fatal(err)
}
f, err := os.OpenFile(apparmorProfilePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
log.Fatal(err)
}
defer f.Close()
if err := compiled.Execute(f, data); err != nil {
log.Fatalf("executing template failed: %v", err)
}
fmt.Printf("created apparmor profile for version %+v at %q\n", data, apparmorProfilePath)
}