apparmor.d/pkg/aa/base.go
2024-05-28 18:15:22 +01:00

122 lines
2.5 KiB
Go

// apparmor.d - Full set of apparmor profiles
// Copyright (C) 2021-2024 Alexandre Pujol <alexandre@pujol.io>
// SPDX-License-Identifier: GPL-2.0-only
package aa
import (
"strings"
)
type RuleBase struct {
IsLineRule bool
Comment string
NoNewPrivs bool
FileInherit bool
Prefix string
Padding string
Optional bool
}
func newRule(rule []string) RuleBase {
comment := ""
fileInherit, noNewPrivs, optional := false, false, false
idx := 0
for idx < len(rule) {
if rule[idx] == COMMENT.Tok() {
comment = " " + strings.Join(rule[idx+1:], " ")
break
}
idx++
}
switch {
case strings.Contains(comment, "file_inherit"):
fileInherit = true
comment = strings.Replace(comment, "file_inherit ", "", 1)
case strings.HasPrefix(comment, "no new privs"):
noNewPrivs = true
comment = strings.Replace(comment, "no new privs ", "", 1)
case strings.Contains(comment, "optional:"):
optional = true
comment = strings.Replace(comment, "optional: ", "", 1)
}
return RuleBase{
Comment: comment,
NoNewPrivs: noNewPrivs,
FileInherit: fileInherit,
Optional: optional,
}
}
func newRuleFromLog(log map[string]string) RuleBase {
comment := ""
fileInherit, noNewPrivs, optional := false, false, false
if log["operation"] == "file_inherit" {
fileInherit = true
}
if log["error"] == "-1" {
if strings.Contains(log["info"], "optional:") {
optional = true
comment = strings.Replace(log["info"], "optional: ", "", 1)
} else {
noNewPrivs = true
}
}
if log["info"] != "" {
comment += " " + log["info"]
}
return RuleBase{
IsLineRule: false,
Comment: comment,
NoNewPrivs: noNewPrivs,
FileInherit: fileInherit,
Optional: optional,
}
}
func (r RuleBase) Less(other any) bool {
return false
}
func (r RuleBase) Equals(other any) bool {
return false
}
func (r RuleBase) String() string {
return renderTemplate(r.Kind(), r)
}
func (r RuleBase) Constraint() constraint {
return anyKind
}
func (r RuleBase) Kind() Kind {
return COMMENT
}
type Qualifier struct {
Audit bool
AccessType string
}
func newQualifierFromLog(log map[string]string) Qualifier {
audit := false
if log["apparmor"] == "AUDIT" {
audit = true
}
return Qualifier{Audit: audit}
}
func (r Qualifier) Less(other Qualifier) bool {
if r.Audit != other.Audit {
return r.Audit
}
return r.AccessType < other.AccessType
}
func (r Qualifier) Equals(other Qualifier) bool {
return r.Audit == other.Audit && r.AccessType == other.AccessType
}