feat(prebuild): make prebuild available as an external package.

Usefull for downstream repo.

cmd/prebuild/build.go

@@ -1,66 +0,0 @@
-// apparmor.d - Full set of apparmor profiles
-// Copyright (C) 2023 Alexandre Pujol <alexandre@pujol.io>
-// SPDX-License-Identifier: GPL-2.0-only
-
-package main
-
-import (
-	"regexp"
-	"strings"
-
-	"github.com/roddhjav/apparmor.d/pkg/aa"
-	"github.com/roddhjav/apparmor.d/pkg/util"
-)
-
-var (
-	regABI           = regexp.MustCompile(`abi <abi/[0-9.]*>,\n`)
-	regAttachments   = regexp.MustCompile(`(profile .* @{exec_path})`)
-	regFlag          = regexp.MustCompile(`flags=\(([^)]+)\)`)
-	regProfileHeader = regexp.MustCompile(` {`)
-)
-
-// Set complain flag on all profiles
-func BuildComplain(profile string) string {
-	if !Complain {
-		return profile
-	}
-
-	flags := []string{}
-	matches := regFlag.FindStringSubmatch(profile)
-	if len(matches) != 0 {
-		flags = strings.Split(matches[1], ",")
-		if util.InSlice("complain", flags) {
-			return profile
-		}
-	}
-	flags = append(flags, "complain")
-	strFlags := " flags=(" + strings.Join(flags, ",") + ") {"
-
-	// Remove all flags definition, then set manifest' flags
-	profile = regFlag.ReplaceAllLiteralString(profile, "")
-	return regProfileHeader.ReplaceAllLiteralString(profile, strFlags)
-}
-
-// Bypass userspace tools restriction
-func BuildUserspace(profile string) string {
-	p := aa.NewAppArmorProfile(profile)
-	p.ParseVariables()
-	p.ResolveAttachments()
-	att := p.NestAttachments()
-	matches := regAttachments.FindAllString(profile, -1)
-	if len(matches) > 0 {
-		strheader := strings.Replace(matches[0], "@{exec_path}", att, -1)
-		return regAttachments.ReplaceAllLiteralString(profile, strheader)
-	}
-	return profile
-}
-
-// Remove abi header for distributions that don't support it
-func BuildABI(profile string) string {
-	switch Distribution {
-	case "debian", "whonix":
-		return regABI.ReplaceAllLiteralString(profile, "")
-	default:
-		return profile
-	}
-}