| Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package packetHandlers |
| 18 | |
| 19 | import ( |
| 20 | "github.com/google/gopacket" |
| 21 | "github.com/google/gopacket/layers" |
| 22 | "net" |
| 23 | ) |
| 24 | |
| 25 | func IsDhcpPacket(pkt gopacket.Packet) bool { |
| 26 | if layerDHCP := pkt.Layer(layers.LayerTypeDHCPv4); layerDHCP != nil { |
| 27 | return true |
| 28 | } |
| 29 | return false |
| 30 | } |
| 31 | |
| 32 | func IsIncomingPacket(packet gopacket.Packet) bool { |
| 33 | if ipLayer := packet.Layer(layers.LayerTypeIPv4); ipLayer != nil { |
| 34 | |
| 35 | ip, _ := ipLayer.(*layers.IPv4) |
| 36 | |
| 37 | // FIXME find a better way to filter outgoing packets |
| 38 | if ip.SrcIP.Equal(net.ParseIP("182.21.0.128")) { |
| 39 | return true |
| 40 | } |
| 41 | } |
| 42 | return false |
| 43 | } |