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Improve process searcher

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This commit is contained in:
世界 2022-08-20 10:38:12 +08:00
parent 0377a11719
commit 84e4677a94
No known key found for this signature in database
GPG Key ID: CD109927C34A63C4
16 changed files with 77 additions and 149 deletions
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8
adapter/inbound.go
View File

@ -29,14 +29,14 @@ type InboundContext struct {
// cache
OriginDestination M.Socksaddr
DomainStrategy dns.DomainStrategy
SniffEnabled bool
SniffOverrideDestination bool
DestinationAddresses []netip.Addr
SourceGeoIPCode string
GeoIPCode string
ProcessInfo *process.Info
SourceGeoIPCode string
GeoIPCode string
ProcessInfo *process.Info
}
type inboundContextKey struct{}

12
common/process/searcher.go
View File

@ -10,7 +10,7 @@ import (
)
type Searcher interface {
FindProcessInfo(ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error)
FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error)
}
var ErrNotFound = E.New("process not found")
@ -26,3 +26,13 @@ type Info struct {
User string
UserId int32
}
func FindProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
info, err := findProcessInfo(searcher, ctx, network, source, destination)
if err != nil {
if source.Addr().Is4In6() {
info, err = findProcessInfo(searcher, ctx, network, netip.AddrPortFrom(netip.AddrFrom4(source.Addr().As4()), source.Port()), destination)
}
}
return info, err
}

14
common/process/searcher_android.go
View File

@ -17,22 +17,22 @@ func NewSearcher(config Config) (Searcher, error) {
return &androidSearcher{config.PackageManager}, nil
}
func (s *androidSearcher) FindProcessInfo(ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
_, uid, err := resolveSocketByNetlink(network, srcIP, srcPort)
func (s *androidSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
socket, err := resolveSocketByNetlink(network, source, destination)
if err != nil {
return nil, err
}
if sharedPackage, loaded := s.packageManager.SharedPackageByID(uint32(uid)); loaded {
if sharedPackage, loaded := s.packageManager.SharedPackageByID(socket.UID); loaded {
return &Info{
UserId: uid,
UserId: int32(socket.UID),
PackageName: sharedPackage,
}, nil
}
if packageName, loaded := s.packageManager.PackageByID(uint32(uid)); loaded {
if packageName, loaded := s.packageManager.PackageByID(socket.UID); loaded {
return &Info{
UserId: uid,
UserId: int32(socket.UID),
PackageName: packageName,
}, nil
}
return &Info{UserId: uid}, nil
return &Info{UserId: int32(socket.UID)}, nil
}

4
common/process/searcher_darwin.go
View File

@ -21,8 +21,8 @@ func NewSearcher(_ Config) (Searcher, error) {
return &darwinSearcher{}, nil
}
func (d *darwinSearcher) FindProcessInfo(ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
processName, err := findProcessName(network, srcIP, srcPort)
func (d *darwinSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
processName, err := findProcessName(network, source.Addr(), int(source.Port()))
if err != nil {
return nil, err
}

8
common/process/searcher_linux.go
View File

@ -19,17 +19,17 @@ func NewSearcher(config Config) (Searcher, error) {
return &linuxSearcher{config.Logger}, nil
}
func (s *linuxSearcher) FindProcessInfo(ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
inode, uid, err := resolveSocketByNetlink(network, srcIP, srcPort)
func (s *linuxSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
socket, err := resolveSocketByNetlink(network, source, destination)
if err != nil {
return nil, err
}
processPath, err := resolveProcessNameByProcSearch(inode, uid)
processPath, err := resolveProcessNameByProcSearch(socket.INode, socket.UID)
if err != nil {
s.logger.DebugContext(ctx, "find process path: ", err)
}
return &Info{
UserId: uid,
UserId: int32(socket.UID),
ProcessPath: processPath,
}, nil
}

136
common/process/searcher_linux_shared.go
View File

@ -6,7 +6,6 @@ import (
"bytes"
"encoding/binary"
"fmt"
"net"
"net/netip"
"os"
"path"
@ -15,9 +14,7 @@ import (
"unicode"
"unsafe"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/netlink"
N "github.com/sagernet/sing/common/network"
)
@ -37,19 +34,9 @@ const (
pathProc = "/proc"
)
func resolveSocketByNetlink(network string, ip netip.Addr, srcPort int) (inode int32, uid int32, err error) {
for attempts := 0; attempts < 3; attempts++ {
inode, uid, err = resolveSocketByNetlink0(network, ip, srcPort)
if err == nil {
return
}
}
return
}
func resolveSocketByNetlink0(network string, ip netip.Addr, srcPort int) (inode int32, uid int32, err error) {
var family byte
var protocol byte
func resolveSocketByNetlink(network string, source netip.AddrPort, destination netip.AddrPort) (*netlink.Socket, error) {
var family uint8
var protocol uint8
switch network {
case N.NetworkTCP:
@ -57,114 +44,31 @@ func resolveSocketByNetlink0(network string, ip netip.Addr, srcPort int) (inode
case N.NetworkUDP:
protocol = syscall.IPPROTO_UDP
default:
return 0, 0, os.ErrInvalid
return nil, os.ErrInvalid
}
if ip.Is4() {
if source.Addr().Is4() {
family = syscall.AF_INET
} else {
family = syscall.AF_INET6
}
req := packSocketDiagRequest(family, protocol, ip, uint16(srcPort))
socket, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM, syscall.NETLINK_INET_DIAG)
sockets, err := netlink.SocketGet(family, protocol, source, netip.AddrPortFrom(netip.IPv6Unspecified(), 0))
if err == nil {
sockets, err = netlink.SocketGet(family, protocol, source, destination)
}
if err != nil {
return 0, 0, E.Cause(err, "dial netlink")
return nil, err
}
defer syscall.Close(socket)
syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, &syscall.Timeval{Usec: 100})
syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, &syscall.Timeval{Usec: 100})
if err = syscall.Connect(socket, &syscall.SockaddrNetlink{
Family: syscall.AF_NETLINK,
Pad: 0,
Pid: 0,
Groups: 0,
}); err != nil {
return 0, 0, err
if len(sockets) > 1 {
for _, socket := range sockets {
if socket.ID.DestinationPort == destination.Port() {
return socket, nil
}
}
}
if _, err = syscall.Write(socket, req); err != nil {
return 0, 0, E.Cause(err, "write netlink request")
}
_buffer := buf.StackNew()
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
defer buffer.Release()
n, err := syscall.Read(socket, buffer.FreeBytes())
if err != nil {
return 0, 0, E.Cause(err, "read netlink response")
}
buffer.Truncate(n)
messages, err := syscall.ParseNetlinkMessage(buffer.Bytes())
if err != nil {
return 0, 0, E.Cause(err, "parse netlink message")
} else if len(messages) == 0 {
return 0, 0, E.New("unexcepted netlink response")
}
message := messages[0]
if message.Header.Type&syscall.NLMSG_ERROR != 0 {
return 0, 0, E.New("netlink message: NLMSG_ERROR")
}
inode, uid = unpackSocketDiagResponse(&messages[0])
if inode < 0 || uid < 0 {
return 0, 0, E.New("invalid inode(", inode, ") or uid(", uid, ")")
}
return
return sockets[0], nil
}
func packSocketDiagRequest(family, protocol byte, source netip.Addr, sourcePort uint16) []byte {
s := make([]byte, 16)
copy(s, source.AsSlice())
buf := make([]byte, sizeOfSocketDiagRequest)
nativeEndian.PutUint32(buf[0:4], sizeOfSocketDiagRequest)
nativeEndian.PutUint16(buf[4:6], socketDiagByFamily)
nativeEndian.PutUint16(buf[6:8], syscall.NLM_F_REQUEST|syscall.NLM_F_DUMP)
nativeEndian.PutUint32(buf[8:12], 0)
nativeEndian.PutUint32(buf[12:16], 0)
buf[16] = family
buf[17] = protocol
buf[18] = 0
buf[19] = 0
nativeEndian.PutUint32(buf[20:24], 0xFFFFFFFF)
binary.BigEndian.PutUint16(buf[24:26], sourcePort)
binary.BigEndian.PutUint16(buf[26:28], 0)
copy(buf[28:44], s)
copy(buf[44:60], net.IPv6zero)
nativeEndian.PutUint32(buf[60:64], 0)
nativeEndian.PutUint64(buf[64:72], 0xFFFFFFFFFFFFFFFF)
return buf
}
func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid int32) {
if len(msg.Data) < 72 {
return 0, 0
}
data := msg.Data
uid = int32(nativeEndian.Uint32(data[64:68]))
inode = int32(nativeEndian.Uint32(data[68:72]))
return
}
func resolveProcessNameByProcSearch(inode, uid int32) (string, error) {
func resolveProcessNameByProcSearch(inode, uid uint32) (string, error) {
files, err := os.ReadDir(pathProc)
if err != nil {
return "", err
@ -182,7 +86,7 @@ func resolveProcessNameByProcSearch(inode, uid int32) (string, error) {
if err != nil {
return "", err
}
if info.Sys().(*syscall.Stat_t).Uid != uint32(uid) {
if info.Sys().(*syscall.Stat_t).Uid != uid {
continue
}

4
common/process/searcher_windows.go
View File

@ -63,8 +63,8 @@ func initWin32API() error {
return nil
}
func (s *windowsSearcher) FindProcessInfo(ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
processName, err := findProcessName(network, srcIP, srcPort)
func (s *windowsSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
processName, err := findProcessName(network, source.Addr(), int(source.Port()))
if err != nil {
return nil, err
}

6
common/process/searcher_with_name.go
View File

@ -1,4 +1,4 @@
//go:build cgo && linux && !android
//go:build linux && !android
package process
@ -10,8 +10,8 @@ import (
F "github.com/sagernet/sing/common/format"
)
func FindProcessInfo(searcher Searcher, ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
info, err := searcher.FindProcessInfo(ctx, network, srcIP, srcPort)
func findProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
info, err := searcher.FindProcessInfo(ctx, network, source, destination)
if err != nil {
return nil, err
}

6
common/process/searcher_without_name.go
View File

@ -1,4 +1,4 @@
//go:build !(cgo && linux && !android)
//go:build !linux || android
package process
@ -7,6 +7,6 @@ import (
"net/netip"
)
func FindProcessInfo(searcher Searcher, ctx context.Context, network string, srcIP netip.Addr, srcPort int) (*Info, error) {
return searcher.FindProcessInfo(ctx, network, srcIP, srcPort)
func findProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
return searcher.FindProcessInfo(ctx, network, source, destination)
}

2
go.mod
View File

@ -15,6 +15,7 @@ require (
github.com/logrusorgru/aurora v2.0.3+incompatible
github.com/oschwald/maxminddb-golang v1.10.0
github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb
github.com/sagernet/sing v0.0.0-20220819160035-717bc38fd35c
github.com/sagernet/sing-dns v0.0.0-20220819010310-839eab1578c9
@ -50,7 +51,6 @@ require (
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e // indirect
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a // indirect
github.com/spf13/pflag v1.0.5 // indirect
github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
go.uber.org/multierr v1.6.0 // indirect

4
go.sum
View File

@ -90,8 +90,8 @@ github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a h1:SE3Xn4GOQ+kx
github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a/go.mod h1:Q+ZXyesnkjV5B70B1ixk65ecKrlJ2jz0atv3fPKsVVo=
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h1:QUQ4RRHD6hGGHdFMEtR8T2P6GS6R3D/CXKdaYHKKXms=
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a h1:iNtsfGMenajBUGZ/1yAzl1v3p+t/7IJ/ilQXq9haRZ8=
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e h1:0QsCfdXMXHprFCQDjyT2m/6Vnj5yvQUq1gG0ybjZ9Hk=
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTYRwpwvEm3nc4eRdxk6vtRbouLVZAzk=
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=

7
inbound/default.go
View File

@ -47,6 +47,7 @@ type myInboundAdapter struct {
tcpListener *net.TCPListener
udpConn *net.UDPConn
udpAddr M.Socksaddr
packetAccess sync.RWMutex
packetOutboundClosed chan struct{}
packetOutbound chan *myInboundPacket
@ -84,6 +85,7 @@ func (a *myInboundAdapter) Start() error {
return err
}
a.udpConn = udpConn
a.udpAddr = bindAddr
a.packetOutboundClosed = make(chan struct{})
a.packetOutbound = make(chan *myInboundPacket)
if a.oobPacketHandler != nil {
@ -164,6 +166,7 @@ func (a *myInboundAdapter) loopTCPIn() {
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Network = N.NetworkTCP
metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr())
a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
hErr := a.connHandler.NewConnection(ctx, conn, metadata)
if hErr != nil {
@ -198,6 +201,7 @@ func (a *myInboundAdapter) loopUDPIn() {
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Network = N.NetworkUDP
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
@ -230,6 +234,7 @@ func (a *myInboundAdapter) loopUDPOOBIn() {
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Network = N.NetworkUDP
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
@ -256,6 +261,7 @@ func (a *myInboundAdapter) loopUDPInThreadSafe() {
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Network = N.NetworkUDP
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
buffer.Release()
@ -284,6 +290,7 @@ func (a *myInboundAdapter) loopUDPOOBInThreadSafe() {
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Network = N.NetworkUDP
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
buffer.Release()

1
inbound/hysteria.go
View File

@ -276,6 +276,7 @@ func (h *Hysteria) acceptStream(ctx context.Context, conn quic.Connection, strea
metadata.SniffOverrideDestination = h.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(h.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr())
metadata.Destination = M.ParseSocksaddrHostPort(request.Host, request.Port)
if !request.UDP {
h.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)

8
route/router.go
View File

@ -591,7 +591,13 @@ func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, m
func (r *Router) match(ctx context.Context, metadata *adapter.InboundContext, defaultOutbound adapter.Outbound) (adapter.Rule, adapter.Outbound) {
if r.processSearcher != nil {
processInfo, err := process.FindProcessInfo(r.processSearcher, ctx, metadata.Network, metadata.Source.Addr, int(metadata.Source.Port))
var originDestination netip.AddrPort
if metadata.OriginDestination.IsValid() {
originDestination = metadata.OriginDestination.AddrPort()
} else if metadata.Destination.IsIP() {
originDestination = metadata.Destination.AddrPort()
}
processInfo, err := process.FindProcessInfo(r.processSearcher, ctx, metadata.Network, metadata.Source.AddrPort(), originDestination)
if err != nil {
r.logger.DebugContext(ctx, "failed to search process: ", err)
} else {

2
test/go.mod
View File

@ -53,7 +53,7 @@ require (
github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e // indirect
github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a // indirect
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a // indirect
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e // indirect
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb // indirect
github.com/sagernet/sing-dns v0.0.0-20220819010310-839eab1578c9 // indirect
github.com/sagernet/sing-tun v0.0.0-20220820022232-9e535150dbff // indirect

4
test/go.sum
View File

@ -112,8 +112,8 @@ github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a h1:SE3Xn4GOQ+kx
github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a/go.mod h1:Q+ZXyesnkjV5B70B1ixk65ecKrlJ2jz0atv3fPKsVVo=
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h1:QUQ4RRHD6hGGHdFMEtR8T2P6GS6R3D/CXKdaYHKKXms=
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a h1:iNtsfGMenajBUGZ/1yAzl1v3p+t/7IJ/ilQXq9haRZ8=
github.com/sagernet/netlink v0.0.0-20220816152750-7a75378bd31a/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e h1:0QsCfdXMXHprFCQDjyT2m/6Vnj5yvQUq1gG0ybjZ9Hk=
github.com/sagernet/netlink v0.0.0-20220820040938-560ab95cda9e/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTYRwpwvEm3nc4eRdxk6vtRbouLVZAzk=
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=