clash/rule/process.go
2021-10-21 22:37:30 +08:00

82 lines
1.7 KiB
Go

package rules
import (
"fmt"
"strconv"
"strings"
"github.com/Dreamacro/clash/common/cache"
"github.com/Dreamacro/clash/component/process"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
)
var processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64))
type Process struct {
adapter string
process string
ruleExtra *C.RuleExtra
}
func (ps *Process) RuleType() C.RuleType {
return C.Process
}
func (ps *Process) Match(metadata *C.Metadata) bool {
if metadata.Process != "" {
return strings.EqualFold(metadata.Process, ps.process)
}
// ignore match in proxy type "tproxy"
if metadata.Type == C.TPROXY {
return false
}
key := fmt.Sprintf("%s:%s:%s", metadata.NetWork.String(), metadata.SrcIP.String(), metadata.SrcPort)
cached, hit := processCache.Get(key)
if !hit {
srcPort, err := strconv.Atoi(metadata.SrcPort)
if err != nil {
processCache.Set(key, "")
return false
}
name, err := process.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, srcPort)
if err != nil {
log.Debugln("[Rule] find process name %s error: %s", C.Process.String(), err.Error())
}
processCache.Set(key, name)
cached = name
}
metadata.Process = cached.(string)
return strings.EqualFold(metadata.Process, ps.process)
}
func (ps *Process) Adapter() string {
return ps.adapter
}
func (ps *Process) Payload() string {
return ps.process
}
func (ps *Process) ShouldResolveIP() bool {
return false
}
func (ps *Process) RuleExtra() *C.RuleExtra {
return ps.ruleExtra
}
func NewProcess(process string, adapter string, ruleExtra *C.RuleExtra) (*Process, error) {
return &Process{
adapter: adapter,
process: process,
ruleExtra: ruleExtra,
}, nil
}