127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
package main
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import (
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"fmt"
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"log"
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"github.com/muun/libwallet"
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)
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type signingDetails struct {
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Address libwallet.MuunAddress
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}
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type AddressGenerator struct {
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addrs map[string]signingDetails
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userKey *libwallet.HDPrivateKey
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muunKey *libwallet.HDPrivateKey
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}
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func NewAddressGenerator(userKey, muunKey *libwallet.HDPrivateKey) *AddressGenerator {
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return &AddressGenerator{
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addrs: make(map[string]signingDetails),
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userKey: userKey,
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muunKey: muunKey,
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}
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}
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func (g *AddressGenerator) Addresses() map[string]signingDetails {
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return g.addrs
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}
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// Stream returns a channel that emits all addresses generated.
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func (g *AddressGenerator) Stream() chan libwallet.MuunAddress {
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ch := make(chan libwallet.MuunAddress)
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go func() {
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g.generate()
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for _, details := range g.Addresses() {
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ch <- details.Address
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}
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close(ch)
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}()
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return ch
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}
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func (g *AddressGenerator) generate() {
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g.generateChangeAddrs()
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g.generateExternalAddrs()
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g.generateContactAddrs(100)
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}
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func (g *AddressGenerator) generateChangeAddrs() {
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const changePath = "m/1'/1'/0"
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changeUserKey, _ := g.userKey.DeriveTo(changePath)
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changeMuunKey, _ := g.muunKey.DeriveTo(changePath)
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g.deriveTree(changeUserKey, changeMuunKey, 2500, "change")
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}
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func (g *AddressGenerator) generateExternalAddrs() {
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const externalPath = "m/1'/1'/1"
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externalUserKey, _ := g.userKey.DeriveTo(externalPath)
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externalMuunKey, _ := g.muunKey.DeriveTo(externalPath)
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g.deriveTree(externalUserKey, externalMuunKey, 2500, "external")
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}
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func (g *AddressGenerator) generateContactAddrs(numContacts int64) {
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const addressPath = "m/1'/1'/2"
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contactUserKey, _ := g.userKey.DeriveTo(addressPath)
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contactMuunKey, _ := g.muunKey.DeriveTo(addressPath)
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for i := int64(0); i <= numContacts; i++ {
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partialContactUserKey, _ := contactUserKey.DerivedAt(i, false)
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partialMuunUserKey, _ := contactMuunKey.DerivedAt(i, false)
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branch := fmt.Sprintf("contacts-%v", i)
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g.deriveTree(partialContactUserKey, partialMuunUserKey, 200, branch)
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}
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}
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func (g *AddressGenerator) deriveTree(rootUserKey, rootMuunKey *libwallet.HDPrivateKey, count int64, name string) {
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for i := int64(0); i <= count; i++ {
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userKey, err := rootUserKey.DerivedAt(i, false)
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if err != nil {
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log.Printf("skipping child %v for %v due to %v", i, name, err)
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continue
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}
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muunKey, err := rootMuunKey.DerivedAt(i, false)
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if err != nil {
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log.Printf("skipping child %v for %v due to %v", i, name, err)
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continue
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}
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addrV2, err := libwallet.CreateAddressV2(userKey.PublicKey(), muunKey.PublicKey())
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if err == nil {
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g.addrs[addrV2.Address()] = signingDetails{
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Address: addrV2,
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}
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} else {
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log.Printf("failed to generate %v v2 for %v due to %v", name, i, err)
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}
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addrV3, err := libwallet.CreateAddressV3(userKey.PublicKey(), muunKey.PublicKey())
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if err == nil {
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g.addrs[addrV3.Address()] = signingDetails{
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Address: addrV3,
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}
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} else {
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log.Printf("failed to generate %v v3 for %v due to %v", name, i, err)
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}
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addrV4, err := libwallet.CreateAddressV4(userKey.PublicKey(), muunKey.PublicKey())
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if err == nil {
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g.addrs[addrV4.Address()] = signingDetails{
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Address: addrV4,
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}
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} else {
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log.Printf("failed to generate %v v4 for %v due to %v", name, i, err)
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}
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}
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}
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