/
cryptocurrency.go
133 lines (111 loc) · 3.39 KB
/
cryptocurrency.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package engine
import (
"fmt"
"github.com/keybase/client/go/libkb"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
)
type CryptocurrencyEngine struct {
libkb.Contextified
arg keybase1.RegisterAddressArg
res keybase1.RegisterAddressRes
}
func NewCryptocurrencyEngine(g *libkb.GlobalContext, arg keybase1.RegisterAddressArg) *CryptocurrencyEngine {
return &CryptocurrencyEngine{
Contextified: libkb.NewContextified(g),
arg: arg,
}
}
func (e *CryptocurrencyEngine) Name() string {
return "Cryptocurrency"
}
func (e *CryptocurrencyEngine) Prereqs() Prereqs {
return Prereqs{
Device: true,
}
}
func (e *CryptocurrencyEngine) RequiredUIs() []libkb.UIKind {
return []libkb.UIKind{
libkb.LogUIKind,
libkb.SecretUIKind,
}
}
func (e *CryptocurrencyEngine) SubConsumers() []libkb.UIConsumer {
return []libkb.UIConsumer{}
}
func (e *CryptocurrencyEngine) Run(ctx *Context) (err error) {
e.G().LocalSigchainGuard().Set(ctx.GetNetContext(), "CryptocurrencyEngine")
defer e.G().LocalSigchainGuard().Clear(ctx.GetNetContext(), "CryptocurrencyEngine")
defer e.G().Trace("CryptocurrencyEngine", func() error { return err })()
var typ libkb.CryptocurrencyType
typ, _, err = libkb.CryptocurrencyParseAndCheck(e.arg.Address)
if err != nil {
return libkb.InvalidAddressError{Msg: err.Error()}
}
family := typ.ToCryptocurrencyFamily()
if len(e.arg.WantedFamily) > 0 && e.arg.WantedFamily != string(family) {
return libkb.InvalidAddressError{Msg: fmt.Sprintf("wanted coin type %q, but got %q", e.arg.WantedFamily, family)}
}
me, err := libkb.LoadMe(libkb.NewLoadUserArg(e.G()))
if err != nil {
return err
}
cryptocurrencyLink := me.IDTable().ActiveCryptocurrency(typ.ToCryptocurrencyFamily())
if cryptocurrencyLink != nil && !e.arg.Force {
return libkb.ExistsError{Msg: string(family)}
}
var sigIDToRevoke keybase1.SigID
var lease *libkb.Lease
var merkleRoot *libkb.MerkleRoot
if cryptocurrencyLink != nil {
sigIDToRevoke = cryptocurrencyLink.GetSigID()
lease, merkleRoot, err = libkb.RequestDowngradeLeaseBySigIDs(ctx.NetContext, e.G(), []keybase1.SigID{sigIDToRevoke})
if err != nil {
return err
}
}
ska := libkb.SecretKeyArg{
Me: me,
KeyType: libkb.DeviceSigningKeyType,
}
sigKey, err := e.G().Keyrings.GetSecretKeyWithPrompt(ctx.SecretKeyPromptArg(ska, "to register a cryptocurrency address"))
if err != nil {
return err
}
if err = sigKey.CheckSecretKey(); err != nil {
return err
}
claim, err := me.CryptocurrencySig(sigKey, e.arg.Address, typ, sigIDToRevoke, merkleRoot)
if err != nil {
return err
}
sig, _, _, err := libkb.SignJSON(claim, sigKey)
if err != nil {
return err
}
kid := sigKey.GetKID()
args := libkb.HTTPArgs{
"sig": libkb.S{Val: sig},
"signing_kid": libkb.S{Val: kid.String()},
"is_remote_proof": libkb.B{Val: false},
"type": libkb.S{Val: "cryptocurrency"},
}
if lease != nil {
args["downgrade_lease_id"] = libkb.S{Val: string(lease.LeaseID)}
}
_, err = e.G().API.Post(libkb.APIArg{
Endpoint: "sig/post",
SessionType: libkb.APISessionTypeREQUIRED,
Args: args,
})
if err != nil {
return err
}
e.res.Family = string(family)
e.res.Type = typ.String()
return nil
}
func (e *CryptocurrencyEngine) Result() keybase1.RegisterAddressRes {
return e.res
}