github.com/chwjbn/xclash@v0.2.0/rule/process.go (about)

     1  package rules
     2  
     3  import (
     4  	"fmt"
     5  	"strconv"
     6  	"strings"
     7  
     8  	"github.com/chwjbn/xclash/common/cache"
     9  	"github.com/chwjbn/xclash/component/process"
    10  	C "github.com/chwjbn/xclash/constant"
    11  	"github.com/chwjbn/xclash/log"
    12  )
    13  
    14  var processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64))
    15  
    16  type Process struct {
    17  	adapter string
    18  	process string
    19  }
    20  
    21  func (ps *Process) RuleType() C.RuleType {
    22  	return C.Process
    23  }
    24  
    25  func (ps *Process) Match(metadata *C.Metadata) bool {
    26  	key := fmt.Sprintf("%s:%s:%s", metadata.NetWork.String(), metadata.SrcIP.String(), metadata.SrcPort)
    27  	cached, hit := processCache.Get(key)
    28  	if !hit {
    29  		srcPort, err := strconv.Atoi(metadata.SrcPort)
    30  		if err != nil {
    31  			processCache.Set(key, "")
    32  			return false
    33  		}
    34  
    35  		name, err := process.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, srcPort)
    36  		if err != nil {
    37  			log.Debugln("[Rule] find process name %s error: %s", C.Process.String(), err.Error())
    38  		}
    39  
    40  		processCache.Set(key, name)
    41  
    42  		cached = name
    43  	}
    44  
    45  	return strings.EqualFold(cached.(string), ps.process)
    46  }
    47  
    48  func (ps *Process) Adapter() string {
    49  	return ps.adapter
    50  }
    51  
    52  func (ps *Process) Payload() string {
    53  	return ps.process
    54  }
    55  
    56  func (ps *Process) ShouldResolveIP() bool {
    57  	return false
    58  }
    59  
    60  func NewProcess(process string, adapter string) (*Process, error) {
    61  	return &Process{
    62  		adapter: adapter,
    63  		process: process,
    64  	}, nil
    65  }