Routing config: Replace `processName` with `process` (full-name/abs-path/abs-folder) (#5496)

About `self/` & `xray/`: https://github.com/XTLS/Xray-core/pull/5496#issuecomment-3714620380

Replaces https://github.com/XTLS/Xray-core/pull/5489

app/router/condition.go

@@ -3,7 +3,9 @@ package router
 import (
 	"context"
 	"os"
+	"path/filepath"
 	"regexp"
+	"slices"
 	"strings"
 
 	"github.com/xtls/xray-core/common/errors"
@@ -350,7 +352,51 @@ func ParseAttrs(attrs []string) *GeoAttributeList {
 }
 
 type ProcessNameMatcher struct {
-	names []string
+	ProcessNames  []string
+	AbsPaths      []string
+	Folders       []string
+	MatchXraySelf bool
+}
+
+func NewProcessNameMatcher(names []string) *ProcessNameMatcher {
+	processNames := []string{}
+	folders := []string{}
+	absPaths := []string{}
+	matchXraySelf := false
+	for _, name := range names {
+		if name == "self/" {
+			matchXraySelf = true
+			continue
+		}
+		// replace xray/ with self executable path
+		if name == "xray/" {
+			xrayPath, err := os.Executable()
+			if err != nil {
+				errors.LogError(context.Background(), "Failed to get xray executable path: ", err)
+				continue
+			}
+			name = xrayPath
+		}
+		name := filepath.ToSlash(name)
+		// /usr/bin/
+		if strings.HasSuffix(name, "/") {
+			folders = append(folders, name)
+			continue
+		}
+		// /usr/bin/curl
+		if strings.Contains(name, "/") {
+			absPaths = append(absPaths, name)
+			continue
+		}
+		// curl.exe or curl
+		processNames = append(processNames, strings.TrimSuffix(name, ".exe"))
+	}
+	return &ProcessNameMatcher{
+		ProcessNames:  processNames,
+		AbsPaths:      absPaths,
+		Folders:       folders,
+		MatchXraySelf: matchXraySelf,
+	}
 }
 
 func (m *ProcessNameMatcher) Apply(ctx routing.Context) bool {
@@ -369,18 +415,26 @@ func (m *ProcessNameMatcher) Apply(ctx routing.Context) bool {
 	if err != nil {
 		return false
 	}
-	pid, name, err := net.FindProcess(src)
+	pid, name, absPath, err := net.FindProcess(src)
 	if err != nil {
 		if err != net.ErrNotLocal {
 			errors.LogError(context.Background(), "Unables to find local process name: ", err)
 		}
 		return false
 	}
-	for _, n := range m.names {
-		if name == "/self" && pid == os.Getpid() {
+	if m.MatchXraySelf {
+		if pid == os.Getpid() {
 			return true
 		}
-		if n == name {
+	}
+	if slices.Contains(m.ProcessNames, name) {
+		return true
+	}
+	if slices.Contains(m.AbsPaths, absPath) {
+		return true
+	}
+	for _, f := range m.Folders {
+		if strings.HasPrefix(absPath, f) {
 			return true
 		}
 	}

app/router/config.go

@@ -126,12 +126,8 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 		conds.Add(matcher)
 	}
 
-	if len(rr.ProcessName) > 0 {
-		refinedNames := make([]string, 0, len(rr.ProcessName))
-		for _, name := range rr.ProcessName {
-			refinedNames = append(refinedNames, strings.TrimSuffix(name, ".exe"))
-		}
-		conds.Add(&ProcessNameMatcher{refinedNames})
+	if len(rr.Process) > 0 {
+		conds.Add(NewProcessNameMatcher(rr.Process))
 	}
 
 	if conds.Len() == 0 {

app/router/config.pb.go

@@ -490,7 +490,7 @@ type RoutingRule struct {
 	LocalGeoip     []*GeoIP          `protobuf:"bytes,17,rep,name=local_geoip,json=localGeoip,proto3" json:"local_geoip,omitempty"`
 	LocalPortList  *net.PortList     `protobuf:"bytes,18,opt,name=local_port_list,json=localPortList,proto3" json:"local_port_list,omitempty"`
 	VlessRouteList *net.PortList     `protobuf:"bytes,20,opt,name=vless_route_list,json=vlessRouteList,proto3" json:"vless_route_list,omitempty"`
-	ProcessName    []string          `protobuf:"bytes,21,rep,name=process_name,json=processName,proto3" json:"process_name,omitempty"`
+	Process        []string          `protobuf:"bytes,21,rep,name=process,proto3" json:"process,omitempty"`
 }
 
 func (x *RoutingRule) Reset() {
@@ -642,9 +642,9 @@ func (x *RoutingRule) GetVlessRouteList() *net.PortList {
 	return nil
 }
 
-func (x *RoutingRule) GetProcessName() []string {
+func (x *RoutingRule) GetProcess() []string {
 	if x != nil {
-		return x.ProcessName
+		return x.Process
 	}
 	return nil
 }
@@ -1089,7 +1089,7 @@ var file_app_router_config_proto_rawDesc = []byte{
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@@ -1139,68 +1139,68 @@ var file_app_router_config_proto_rawDesc = []byte{
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+	0x67, 0x5f, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1e, 0x2e, 0x78,
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+	0x6e, 0x44, 0x65, 0x6d, 0x61, 0x6e, 0x64, 0x10, 0x03, 0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72,
+	0x50, 0x01, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
+	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
+	0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0xaa, 0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e,
+	0x41, 0x70, 0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }
 
 var (

app/router/config.proto

@@ -113,7 +113,7 @@ message RoutingRule {
   xray.common.net.PortList local_port_list = 18;
 
   xray.common.net.PortList vless_route_list = 20;
-  repeated string process_name = 21;
+  repeated string process = 21;
 }
 
 message BalancingRule {

common/net/find_process_linux.go

@@ -13,13 +13,13 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 )
 
-func FindProcess(dest Destination) (int, string, error) {
+func FindProcess(dest Destination) (PID int, Name string, AbsolutePath string, err error) {
 	isLocal, err := IsLocal(dest.Address.IP())
 	if err != nil {
-		return 0, "", errors.New("failed to determine if address is local: ", err)
+		return 0, "", "", errors.New("failed to determine if address is local: ", err)
 	}
 	if !isLocal {
-		return 0, "", ErrNotLocal
+		return 0, "", "", ErrNotLocal
 	}
 	if dest.Network != Network_TCP && dest.Network != Network_UDP {
 		panic("Unsupported network type for process lookup.")
@@ -51,36 +51,39 @@ func FindProcess(dest Destination) (int, string, error) {
 
 	targetHexAddr, err := formatLittleEndianString(dest.Address, dest.Port)
 	if err != nil {
-		return 0, "", errors.New("failed to format address: ", err)
+		return 0, "", "", errors.New("failed to format address: ", err)
 	}
 
 	inode, err := findInodeInFile(procFile, targetHexAddr)
 	if err != nil {
-		return 0, "", errors.New("could not search in ", procFile).Base(err)
+		return 0, "", "", errors.New("could not search in ", procFile).Base(err)
 	}
 	if inode == "" {
-		return 0, "", errors.New("connection for ", dest.Address, ":", dest.Port, " not found in ", procFile)
+		return 0, "", "", errors.New("connection for ", dest.Address, ":", dest.Port, " not found in ", procFile)
 	}
 
 	pidStr, err := findPidByInode(inode)
 	if err != nil {
-		return 0, "", errors.New("could not find PID for inode ", inode, ": ", err)
+		return 0, "", "", errors.New("could not find PID for inode ", inode, ": ", err)
 	}
 	if pidStr == "" {
-		return 0, "", errors.New("no process found for inode ", inode)
+		return 0, "", "", errors.New("no process found for inode ", inode)
 	}
 
-	procName, err := getProcessName(pidStr)
+	absPath, err := getAbsPath(pidStr)
 	if err != nil {
-		return 0, "", fmt.Errorf("could not get process name for PID %s: %w", pidStr, err)
+		return 0, "", "", errors.New("could not get process name for PID ", pidStr, ":", err)
 	}
 
+	nameSplit := strings.Split(absPath, "/")
+	procName := nameSplit[len(nameSplit)-1]
+
 	pid, err := strconv.Atoi(pidStr)
 	if err != nil {
-		return 0, "", errors.New("failed to parse PID: ", err)
+		return 0, "", "", errors.New("failed to parse PID: ", err)
 	}
 
-	return pid, procName, nil
+	return pid, procName, absPath, nil
 }
 
 func formatLittleEndianString(addr Address, port Port) (string, error) {
@@ -167,12 +170,7 @@ func findPidByInode(inode string) (string, error) {
 	return "", nil
 }
 
-func getProcessName(pid string) (string, error) {
-	path := fmt.Sprintf("/proc/%s/comm", pid)
-	content, err := os.ReadFile(path)
-	if err != nil {
-		return "", err
-	}
-	// remove trailing \n
-	return strings.TrimSpace(string(content)), nil
+func getAbsPath(pid string) (string, error) {
+	path := fmt.Sprintf("/proc/%s/exe", pid)
+	return os.Readlink(path)
 }

common/net/find_process_others.go

@@ -6,6 +6,6 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 )
 
-func FindProcess(dest Destination) (int, string, error) {
-	return 0, "", errors.New("process lookup is not supported on this platform")
+func FindProcess(dest Destination) (int, string, string, error) {
+	return 0, "", "", errors.New("process lookup is not supported on this platform")
 }

common/net/find_process_windows.go

@@ -4,6 +4,7 @@ package net
 
 import (
 	"net/netip"
+	"path/filepath"
 	"strings"
 	"sync"
 	"syscall"
@@ -48,19 +49,19 @@ func initWin32API() error {
 	return nil
 }
 
-func FindProcess(dest Destination) (int, string, error) {
+func FindProcess(dest Destination) (PID int, Name string, AbsolutePath string, err error) {
 	once.Do(func() {
 		initErr = initWin32API()
 	})
 	if initErr != nil {
-		return 0, "", initErr
+		return 0, "", "", initErr
 	}
 	isLocal, err := IsLocal(dest.Address.IP())
 	if err != nil {
-		return 0, "", errors.New("failed to determine if address is local: ", err)
+		return 0, "", "", errors.New("failed to determine if address is local: ", err)
 	}
 	if !isLocal {
-		return 0, "", ErrNotLocal
+		return 0, "", "", ErrNotLocal
 	}
 	if dest.Network != Network_TCP && dest.Network != Network_UDP {
 		panic("Unsupported network type for process lookup.")
@@ -86,7 +87,7 @@ func FindProcess(dest Destination) (int, string, error) {
 
 	addr, ok := netip.AddrFromSlice(ip)
 	if !ok {
-		return 0, "", errors.New("invalid IP address")
+		return 0, "", "", errors.New("invalid IP address")
 	}
 	addr = addr.Unmap()
 
@@ -97,19 +98,23 @@ func FindProcess(dest Destination) (int, string, error) {
 
 	buf, err := getTransportTable(fn, family, class)
 	if err != nil {
-		return 0, "", err
+		return 0, "", "", err
 	}
 
 	s := newSearcher(dest.Network, dest.Address.Family())
 
 	pid, err := s.Search(buf, addr, uint16(port))
 	if err != nil {
-		return 0, "", err
+		return 0, "", "", err
 	}
-	name, err := getExecPathFromPID(pid)
-	// drop .exe
-	name = strings.TrimSuffix(name, ".exe")
-	return int(pid), name, err
+	NameWithPath, err := getExecPathFromPID(pid)
+	NameWithPath = filepath.ToSlash(NameWithPath)
+
+	// drop .exe and path
+	nameSplit := strings.Split(NameWithPath, "/")
+	procName := nameSplit[len(nameSplit)-1]
+	procName = strings.TrimSuffix(procName, ".exe")
+	return int(pid), procName, NameWithPath, err
 }
 
 type searcher struct {
@@ -234,10 +239,5 @@ func getExecPathFromPID(pid uint32) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	// full path will like: C:\Windows\System32\curl.exe
-	// we only need the executable name
-	fullPathName := syscall.UTF16ToString(buf[:size])
-	nameSplit := strings.Split(fullPathName, "\\")
-	name := nameSplit[len(nameSplit)-1]
-	return name, nil
+	return syscall.UTF16ToString(buf[:size]), nil
 }

common/net/net.go

@@ -21,22 +21,22 @@ const ChromeH2KeepAlivePeriod = 45 * time.Second
 
 var ErrNotLocal = errors.New("the source address is not from local machine.")
 
-type localIPCahceEntry struct {
+type localIPCacheEntry struct {
 	addrs      []net.Addr
 	lastUpdate time.Time
 }
 
-var localIPCahce = atomic.Pointer[localIPCahceEntry]{}
+var localIPCache = atomic.Pointer[localIPCacheEntry]{}
 
 func IsLocal(ip net.IP) (bool, error) {
 	var addrs []net.Addr
-	if entry := localIPCahce.Load(); entry == nil || time.Since(entry.lastUpdate) > time.Minute {
+	if entry := localIPCache.Load(); entry == nil || time.Since(entry.lastUpdate) > time.Minute {
 		var err error
 		addrs, err = net.InterfaceAddrs()
 		if err != nil {
 			return false, err
 		}
-		localIPCahce.Store(&localIPCahceEntry{
+		localIPCache.Store(&localIPCacheEntry{
 			addrs:      addrs,
 			lastUpdate: time.Now(),
 		})

infra/conf/router.go

@@ -449,22 +449,22 @@ func ToCidrList(ips StringList) ([]*router.GeoIP, error) {
 func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 	type RawFieldRule struct {
 		RouterRule
-		Domain      *StringList       `json:"domain"`
-		Domains     *StringList       `json:"domains"`
-		IP          *StringList       `json:"ip"`
-		Port        *PortList         `json:"port"`
-		Network     *NetworkList      `json:"network"`
-		SourceIP    *StringList       `json:"sourceIP"`
-		Source      *StringList       `json:"source"`
-		SourcePort  *PortList         `json:"sourcePort"`
-		User        *StringList       `json:"user"`
-		VlessRoute  *PortList         `json:"vlessRoute"`
-		InboundTag  *StringList       `json:"inboundTag"`
-		Protocols   *StringList       `json:"protocol"`
-		Attributes  map[string]string `json:"attrs"`
-		LocalIP     *StringList       `json:"localIP"`
-		LocalPort   *PortList         `json:"localPort"`
-		ProcessName *StringList       `json:"processName"`
+		Domain     *StringList       `json:"domain"`
+		Domains    *StringList       `json:"domains"`
+		IP         *StringList       `json:"ip"`
+		Port       *PortList         `json:"port"`
+		Network    *NetworkList      `json:"network"`
+		SourceIP   *StringList       `json:"sourceIP"`
+		Source     *StringList       `json:"source"`
+		SourcePort *PortList         `json:"sourcePort"`
+		User       *StringList       `json:"user"`
+		VlessRoute *PortList         `json:"vlessRoute"`
+		InboundTag *StringList       `json:"inboundTag"`
+		Protocols  *StringList       `json:"protocol"`
+		Attributes map[string]string `json:"attrs"`
+		LocalIP    *StringList       `json:"localIP"`
+		LocalPort  *PortList         `json:"localPort"`
+		Process    *StringList       `json:"process"`
 	}
 	rawFieldRule := new(RawFieldRule)
 	err := json.Unmarshal(msg, rawFieldRule)
@@ -577,10 +577,8 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		rule.Attributes = rawFieldRule.Attributes
 	}
 
-	if rawFieldRule.ProcessName != nil {
-		for _, s := range *rawFieldRule.ProcessName {
-			rule.ProcessName = append(rule.ProcessName, s)
-		}
+	if rawFieldRule.Process != nil && len(*rawFieldRule.Process) > 0 {
+		rule.Process = *rawFieldRule.Process
 	}
 
 	return rule, nil