MCPACKETS

Installation

Install this package by running go get -u github.com/Sascha-T/mcpackets

type Packet struct {
	Bytes  []byte
	Size   int
	Offset int
}

Can be created using:

func NewPacket_A(arr []byte)
Creates a new packet from a byte array
func NewPacket_S(size int)
Creates a new packet with a byte array of size size filled with 0s

Methods:

func (p *Packet) WriteByte(r byte)
Writes one byte and increments offset
func (p *Packet) ReadByte() byte
Reads one byte and increments offset
func (p *Packet) WriteShort(r uint16)
Writes two bytes (uint16) and increments offset
func (p *Packet) ReadShort() uint16
Reads two bytes (uint16) and increments offset
func (p *Packet) WriteInt(r uint32)
Writes four byte (uint32) and increments offset
func (p *Packet) ReadInt() uint32
Reads four byte (uint32) and increments offset
func (p *Packet) WriteLong(r uint64)
Writes eight bytes (uint64) and increments offset
func (p *Packet) ReadLong() uint64
Reads eight bytes (uint64) and increments offset
func (p *Packet) WriteVarInt(r uint)
Writes a varint and increments offset
func (p *Packet) ReadVarInt() uint
Reads a varint and increments offset
func (p *Packet) WriteString(str string)
Writes a varint with the size of the string and the string and increments offset
func (p *Packet) ReadString() string
Reads a varint then reads a string with size being the read varint

type EncryptionHolder struct {
	LocalBoundCryptoStream cipher.Stream
	RemoteBoundCryptoStream cipher.Stream
}

Can be created using:

func NewEncryptionHolder(sharedSecret []byte) EncryptionHolder
Shared secret is the byte array sent by the server encrypted using the client's public key

Methods:

func (c EncryptionHolder) EncryptPacket(p Packet) []byte
Encrypts packet p with the outbound AES stream into a byte array
func (c EncryptionHolder) DecryptPacket(p []byte) Packet
Decrypts byte array p with the inbound AES stream into a packet