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secflags.go
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secflags.go
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// Copyright 2015 The rkt Authors
//
// 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 flag
import (
"strings"
pkgflag "github.com/rkt/rkt/pkg/flag"
)
const (
insecureNone = 0
insecureImage = 1 << (iota - 1)
insecureTLS
insecureOnDisk // ignored, left for backwards compatibility
insecureHTTP
insecurePubKey
insecureCapabilities
insecurePaths
insecureSeccomp
insecureAllFetch = (insecureImage | insecureTLS | insecureHTTP | insecurePubKey)
insecureAllRun = (insecureCapabilities | insecurePaths | insecureSeccomp)
insecureAll = (insecureAllFetch | insecureAllRun)
)
var (
insecureOptions = []string{
"none",
"image",
"tls",
"ondisk",
"http",
"pubkey",
"capabilities",
"paths",
"seccomp",
"all-fetch",
"all-run",
"all",
}
insecureOptionsMap = map[string]int{
insecureOptions[0]: insecureNone,
insecureOptions[1]: insecureImage,
insecureOptions[2]: insecureTLS,
insecureOptions[3]: insecureOnDisk,
insecureOptions[4]: insecureHTTP,
insecureOptions[5]: insecurePubKey,
insecureOptions[6]: insecureCapabilities,
insecureOptions[7]: insecurePaths,
insecureOptions[8]: insecureSeccomp,
insecureOptions[9]: insecureAllFetch,
insecureOptions[10]: insecureAllRun,
insecureOptions[11]: insecureAll,
}
)
type SecFlags struct {
*pkgflag.BitFlags
}
func NewSecFlagsFromValue(val int) (*SecFlags, error) {
sf := &SecFlags{
&pkgflag.BitFlags{Flags: val},
}
return sf, nil
}
func NewSecFlags(defOpts string) (*SecFlags, error) {
bf, err := pkgflag.NewBitFlags(insecureOptions, defOpts, insecureOptionsMap)
if err != nil {
return nil, err
}
// Ignore ondisk
bf.Flags = bf.Flags &^ insecureOnDisk
sf := &SecFlags{
BitFlags: bf,
}
return sf, nil
}
func (sf *SecFlags) SkipImageCheck() bool {
return sf.HasFlag(insecureImage)
}
func (sf *SecFlags) SkipTLSCheck() bool {
return sf.HasFlag(insecureTLS)
}
func (sf *SecFlags) AllowHTTP() bool {
return sf.HasFlag(insecureHTTP)
}
func (sf *SecFlags) ConsiderInsecurePubKeys() bool {
return sf.HasFlag(insecurePubKey)
}
func (sf *SecFlags) SkipCapabilities() bool {
return sf.HasFlag(insecureCapabilities)
}
func (sf *SecFlags) SkipPaths() bool {
return sf.HasFlag(insecurePaths)
}
func (sf *SecFlags) SkipSeccomp() bool {
return sf.HasFlag(insecureSeccomp)
}
func (sf *SecFlags) SkipAllSecurityChecks() bool {
return sf.HasFlag(insecureAll)
}
func (sf *SecFlags) SkipAnySecurityChecks() bool {
return sf.Flags != 0
}
func (sf *SecFlags) Value() int {
return sf.Flags
}
func (sf *SecFlags) String() string {
opts := []string{}
for optstr, opt := range insecureOptionsMap {
if sf.HasFlag(opt) {
if opt == insecureNone || opt == insecureAll {
continue
}
opts = append(opts, optstr)
}
}
if len(opts) == 0 {
return "none"
}
return strings.Join(opts, ",")
}