Clash.Meta/rules/common/uid.go

106 lines
2.2 KiB
Go

package common
import (
"fmt"
"github.com/Dreamacro/clash/common/utils"
"github.com/Dreamacro/clash/component/process"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
"runtime"
"strconv"
"strings"
)
type Uid struct {
*Base
uids []utils.Range[uint32]
oUid string
adapter string
}
func NewUid(oUid, adapter string) (*Uid, error) {
//if len(_uids) > 28 {
// return nil, fmt.Errorf("%s, too many uid to use, maximum support 28 uid", errPayload.Error())
//}
if !(runtime.GOOS == "linux" || runtime.GOOS == "android") {
return nil, fmt.Errorf("uid rule not support this platform")
}
var uidRange []utils.Range[uint32]
for _, u := range strings.Split(oUid, "/") {
if u == "" {
continue
}
subUids := strings.Split(u, "-")
subUidsLen := len(subUids)
if subUidsLen > 2 {
return nil, errPayload
}
uidStart, err := strconv.ParseUint(strings.Trim(subUids[0], "[ ]"), 10, 32)
if err != nil {
return nil, errPayload
}
switch subUidsLen {
case 1:
uidRange = append(uidRange, *utils.NewRange(uint32(uidStart), uint32(uidStart)))
case 2:
uidEnd, err := strconv.ParseUint(strings.Trim(subUids[1], "[ ]"), 10, 32)
if err != nil {
return nil, errPayload
}
uidRange = append(uidRange, *utils.NewRange(uint32(uidStart), uint32(uidEnd)))
}
}
if len(uidRange) == 0 {
return nil, errPayload
}
return &Uid{
Base: &Base{},
adapter: adapter,
oUid: oUid,
uids: uidRange,
}, nil
}
func (u *Uid) RuleType() C.RuleType {
return C.Uid
}
func (u *Uid) Match(metadata *C.Metadata) (bool, string) {
srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
if err != nil {
return false, ""
}
var uid *uint32
if metadata.Uid != nil {
uid = metadata.Uid
} else if uid, err = process.FindUid(metadata.NetWork.String(), metadata.SrcIP, int(srcPort)); err == nil {
metadata.Uid = uid
} else {
log.Warnln("[UID] could not get uid from %s", metadata.String())
return false, ""
}
if uid != nil {
for _, _uid := range u.uids {
if _uid.Contains(*uid) {
return true, u.adapter
}
}
}
return false, ""
}
func (u *Uid) Adapter() string {
return u.adapter
}
func (u *Uid) Payload() string {
return u.oUid
}