53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
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package Protocols
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import (
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"encoding/binary"
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"github.com/sabouaram/GoNetDev/Protocols/Const_Fields"
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"github.com/sabouaram/GoNetDev/Protocols/Utils/GLogger"
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)
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func Parse(byte_slice []byte) Frame {
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logger := GLogger.GetInstance()
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EthHeader := NewEthHeader()
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IPHeader := NewIpv4Header()
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ARPHeader := NewArpHeader()
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ICMPHeader := NewICMPHeader()
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padding := 0
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Tag1q := binary.BigEndian.Uint16(byte_slice[12:14])
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logger.Println(Tag1q)
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//In case of a Trunk link
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if Tag1q == 33024 {
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padding = 4
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EthHeader.ParseEthernet(byte_slice, true)
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} else {
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EthHeader.ParseEthernet(byte_slice, false)
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}
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logger.Printf("=>ETHERNET: SRC_MAC_ADDRESS:%x, DST_MAC_ADDRESS:%x \n", EthHeader.SourceMacAddress, EthHeader.DestMacAddress)
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switch binary.BigEndian.Uint16(EthHeader.Type) {
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case Const_Fields.Type_IPV4:
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{
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IPHeader.ParseIPV4(byte_slice[padding+14:])
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logger.Printf(" =>IPV4: SRC_IP_ADDRESS:%x, DST_IP_ADDRESS:%x \n", IPHeader.Src_address, IPHeader.Dst_address)
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switch uint8(IPHeader.Protocol[0]) {
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case Const_Fields.Type_ICMP:
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ICMPHeader.ParseICMP(byte_slice[padding+34:])
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logger.Println(" =>ICMP")
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case Const_Fields.Type_TCP:
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logger.Println(" =>TCP")
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case Const_Fields.Type_UDP:
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logger.Println(" =>UDP")
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}
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}
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case 0x0806:
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{
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ARPHeader.ParseARP(byte_slice[padding+14:])
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logger.Printf(" =>ARP: SRC_MAC_ADDRESS:%x, SRC_IP_ADDRESS:%x , TARGET_MAC_ADDRESS:%x, TARGET_IP_ADDRESS:%x, Operation: %x \n", ARPHeader.SenderMACaddress, ARPHeader.SenderIPaddress, ARPHeader.TargetMACaddress, ARPHeader.TargetIPaddress, ARPHeader.Operation)
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}
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}
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return Frame{EthHeader, ARPHeader, IPHeader, ICMPHeader}
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}
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