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Remove invalid packet check

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世界 2022-11-28 12:44:55 +08:00
parent 3ccdce1852
commit b22d9eb41b
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GPG key ID: CD109927C34A63C4
1 changed files with 0 additions and 24 deletions
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24
system.go
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@ -206,12 +206,6 @@ func (s *System) acceptLoop(listener net.Listener) {
}
func (s *System) processIPv4(packet clashtcpip.IPv4Packet) error {
if !packet.Valid() {
return E.New("ipv4: invalid packet")
}
if packet.TimeToLive() == 0x00 {
return E.New("ipv4: TTL exceeded")
}
switch packet.Protocol() {
case clashtcpip.TCP:
return s.processIPv4TCP(packet, packet.Payload())
@ -225,12 +219,6 @@ func (s *System) processIPv4(packet clashtcpip.IPv4Packet) error {
}
func (s *System) processIPv6(packet clashtcpip.IPv6Packet) error {
if !packet.Valid() {
return E.New("ipv6: invalid packet")
}
if packet.HopLimit() == 0x00 {
return E.New("ipv6: TTL exceeded")
}
switch packet.Protocol() {
case clashtcpip.TCP:
return s.processIPv6TCP(packet, packet.Payload())
@ -244,9 +232,6 @@ func (s *System) processIPv6(packet clashtcpip.IPv6Packet) error {
}
func (s *System) processIPv4TCP(packet clashtcpip.IPv4Packet, header clashtcpip.TCPPacket) error {
if !header.Valid() {
return E.New("ipv4: tcp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {
@ -273,9 +258,6 @@ func (s *System) processIPv4TCP(packet clashtcpip.IPv4Packet, header clashtcpip.
}
func (s *System) processIPv6TCP(packet clashtcpip.IPv6Packet, header clashtcpip.TCPPacket) error {
if !header.Valid() {
return E.New("ipv6: tcp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {
@ -308,9 +290,6 @@ func (s *System) processIPv4UDP(packet clashtcpip.IPv4Packet, header clashtcpip.
if packet.FragmentOffset() != 0 {
return E.New("ipv4: udp: fragment dropped")
}
if !header.Valid() {
return E.New("ipv4: udp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {
@ -334,9 +313,6 @@ func (s *System) processIPv4UDP(packet clashtcpip.IPv4Packet, header clashtcpip.
}
func (s *System) processIPv6UDP(packet clashtcpip.IPv6Packet, header clashtcpip.UDPPacket) error {
if !header.Valid() {
return E.New("ipv6: udp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {