120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
package vaa
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import (
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"bytes"
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"encoding/binary"
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"github.com/ethereum/go-ethereum/common"
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)
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// CoreModule is the identifier of the Core module (which is used for governance messages)
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var CoreModule = []byte{00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 0x43, 0x6f, 0x72, 0x65}
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type (
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// BodyContractUpgrade is a governance message to perform a contract upgrade of the core module
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BodyContractUpgrade struct {
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ChainID ChainID
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NewContract Address
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}
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// BodyGuardianSetUpdate is a governance message to set a new guardian set
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BodyGuardianSetUpdate struct {
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Keys []common.Address
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NewIndex uint32
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}
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// BodyTokenBridgeRegisterChain is a governance message to register a chain on the token bridge
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BodyTokenBridgeRegisterChain struct {
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Module string
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ChainID ChainID
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EmitterAddress Address
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}
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// BodyTokenBridgeUpgradeContract is a governance message to upgrade the token bridge.
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BodyTokenBridgeUpgradeContract struct {
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Module string
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TargetChainID ChainID
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NewContract Address
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}
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)
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func (b BodyContractUpgrade) Serialize() []byte {
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buf := new(bytes.Buffer)
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// Module
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buf.Write(CoreModule)
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// Action
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MustWrite(buf, binary.BigEndian, uint8(1))
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// ChainID
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MustWrite(buf, binary.BigEndian, uint16(b.ChainID))
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buf.Write(b.NewContract[:])
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return buf.Bytes()
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}
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func (b BodyGuardianSetUpdate) Serialize() []byte {
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buf := new(bytes.Buffer)
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// Module
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buf.Write(CoreModule)
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// Action
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MustWrite(buf, binary.BigEndian, uint8(2))
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// ChainID - 0 for universal
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MustWrite(buf, binary.BigEndian, uint16(0))
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MustWrite(buf, binary.BigEndian, b.NewIndex)
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MustWrite(buf, binary.BigEndian, uint8(len(b.Keys)))
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for _, k := range b.Keys {
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buf.Write(k[:])
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}
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return buf.Bytes()
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}
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func (r BodyTokenBridgeRegisterChain) Serialize() []byte {
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if len(r.Module) > 32 {
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panic("module longer than 32 byte")
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}
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buf := &bytes.Buffer{}
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// Write token bridge header
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for i := 0; i < (32 - len(r.Module)); i++ {
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buf.WriteByte(0x00)
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}
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buf.Write([]byte(r.Module))
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// Write action ID
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MustWrite(buf, binary.BigEndian, uint8(1))
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// Write target chain (0 = universal)
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MustWrite(buf, binary.BigEndian, uint16(0))
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// Write chain to be registered
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MustWrite(buf, binary.BigEndian, r.ChainID)
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// Write emitter address of chain to be registered
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buf.Write(r.EmitterAddress[:])
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return buf.Bytes()
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}
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func (r BodyTokenBridgeUpgradeContract) Serialize() []byte {
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if len(r.Module) > 32 {
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panic("module longer than 32 byte")
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}
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buf := &bytes.Buffer{}
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// Write token bridge header
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for i := 0; i < (32 - len(r.Module)); i++ {
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buf.WriteByte(0x00)
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}
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buf.Write([]byte(r.Module))
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// Write action ID
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MustWrite(buf, binary.BigEndian, uint8(2))
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// Write target chain
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MustWrite(buf, binary.BigEndian, r.TargetChainID)
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// Write emitter address of chain to be registered
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buf.Write(r.NewContract[:])
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return buf.Bytes()
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}
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