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|
package bwrap
import (
"slices"
"strconv"
)
/*
static boolean args
*/
type BoolArg int
func (b BoolArg) Unwrap() []string {
return boolArgs[b]
}
const (
UnshareAll BoolArg = iota
UnshareUser
UnshareIPC
UnsharePID
UnshareNet
UnshareUTS
UnshareCGroup
ShareNet
UserNS
Clearenv
NewSession
DieWithParent
AsInit
)
var boolArgs = [...][]string{
UnshareAll: {"--unshare-all", "--unshare-user"},
UnshareUser: {"--unshare-user"},
UnshareIPC: {"--unshare-ipc"},
UnsharePID: {"--unshare-pid"},
UnshareNet: {"--unshare-net"},
UnshareUTS: {"--unshare-uts"},
UnshareCGroup: {"--unshare-cgroup"},
ShareNet: {"--share-net"},
UserNS: {"--disable-userns", "--assert-userns-disabled"},
Clearenv: {"--clearenv"},
NewSession: {"--new-session"},
DieWithParent: {"--die-with-parent"},
AsInit: {"--as-pid-1"},
}
func (c *Config) boolArgs() Builder {
b := boolArg{
UserNS: !c.UserNS,
Clearenv: c.Clearenv,
NewSession: c.NewSession,
DieWithParent: c.DieWithParent,
AsInit: c.AsInit,
}
if c.Unshare == nil {
b[UnshareAll] = true
b[ShareNet] = c.Net
} else {
b[UnshareUser] = c.Unshare.User
b[UnshareIPC] = c.Unshare.IPC
b[UnsharePID] = c.Unshare.PID
b[UnshareNet] = c.Unshare.Net
b[UnshareUTS] = c.Unshare.UTS
b[UnshareCGroup] = c.Unshare.CGroup
}
return &b
}
type boolArg [len(boolArgs)]bool
func (b *boolArg) Len() (l int) {
for i, v := range b {
if v {
l += len(boolArgs[i])
}
}
return
}
func (b *boolArg) Append(args *[]string) {
for i, v := range b {
if v {
*args = append(*args, BoolArg(i).Unwrap()...)
}
}
}
/*
static integer args
*/
type IntArg int
func (i IntArg) Unwrap() string {
return intArgs[i]
}
const (
UID IntArg = iota
GID
)
var intArgs = [...]string{
UID: "--uid",
GID: "--gid",
}
func (c *Config) intArgs() Builder {
return &intArg{
UID: c.UID,
GID: c.GID,
}
}
type intArg [len(intArgs)]*int
func (n *intArg) Len() (l int) {
for _, v := range n {
if v != nil {
l += 2
}
}
return
}
func (n *intArg) Append(args *[]string) {
for i, v := range n {
if v != nil {
*args = append(*args, IntArg(i).Unwrap(), strconv.Itoa(*v))
}
}
}
/*
static string args
*/
type StringArg int
func (s StringArg) Unwrap() string {
return stringArgs[s]
}
const (
Hostname StringArg = iota
Chdir
UnsetEnv
LockFile
)
var stringArgs = [...]string{
Hostname: "--hostname",
Chdir: "--chdir",
UnsetEnv: "--unsetenv",
LockFile: "--lock-file",
}
func (c *Config) stringArgs() Builder {
n := stringArg{
UnsetEnv: c.UnsetEnv,
LockFile: c.LockFile,
}
if c.Hostname != "" {
n[Hostname] = []string{c.Hostname}
}
if c.Chdir != "" {
n[Chdir] = []string{c.Chdir}
}
return &n
}
type stringArg [len(stringArgs)][]string
func (s *stringArg) Len() (l int) {
for _, arg := range s {
l += len(arg) * 2
}
return
}
func (s *stringArg) Append(args *[]string) {
for i, arg := range s {
for _, v := range arg {
*args = append(*args, StringArg(i).Unwrap(), v)
}
}
}
/*
static pair args
*/
type PairArg int
func (p PairArg) Unwrap() string {
return pairArgs[p]
}
const (
SetEnv PairArg = iota
)
var pairArgs = [...]string{
SetEnv: "--setenv",
}
func (c *Config) pairArgs() Builder {
var n pairArg
n[SetEnv] = make([][2]string, len(c.SetEnv))
keys := make([]string, 0, len(c.SetEnv))
for k := range c.SetEnv {
keys = append(keys, k)
}
slices.Sort(keys)
for i, k := range keys {
n[SetEnv][i] = [2]string{k, c.SetEnv[k]}
}
return &n
}
type pairArg [len(pairArgs)][][2]string
func (p *pairArg) Len() (l int) {
for _, v := range p {
l += len(v) * 3
}
return
}
func (p *pairArg) Append(args *[]string) {
for i, arg := range p {
for _, v := range arg {
*args = append(*args, PairArg(i).Unwrap(), v[0], v[1])
}
}
}
|
