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contracts/ens: expose Add and SetAddr in ENS (#17661)

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I am planning to use this to resolve names to user addresses for Swarm/MRU feeds.
This commit is contained in:
Javier Peletier 2018-09-28 22:46:41 +02:00 committed by Felix Lange
parent 79ca6c7a65
commit f1b9a3e2f4
2 changed files with 53 additions and 4 deletions
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32
contracts/ens/ens.go
View File

@ -151,6 +151,38 @@ func (self *ENS) Resolve(name string) (common.Hash, error) {
return common.BytesToHash(ret[:]), nil
}
// Addr is a non-transactional call that returns the address associated with a name.
func (self *ENS) Addr(name string) (common.Address, error) {
node := EnsNode(name)
resolver, err := self.getResolver(node)
if err != nil {
return common.Address{}, err
}
ret, err := resolver.Addr(node)
if err != nil {
return common.Address{}, err
}
return common.BytesToAddress(ret[:]), nil
}
// SetAddress sets the address associated with a name. Only works if the caller
// owns the name, and the associated resolver implements a `setAddress` function.
func (self *ENS) SetAddr(name string, addr common.Address) (*types.Transaction, error) {
node := EnsNode(name)
resolver, err := self.getResolver(node)
if err != nil {
return nil, err
}
opts := self.TransactOpts
opts.GasLimit = 200000
return resolver.Contract.SetAddr(&opts, node, addr)
}
// Register registers a new domain name for the caller, making them the owner of the new name.
// Only works if the registrar for the parent domain implements the FIFS registrar protocol.
func (self *ENS) Register(name string) (*types.Transaction, error) {

25
contracts/ens/ens_test.go
View File

@ -22,16 +22,18 @@ import (
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/contracts/ens/contract"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
)
var (
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
name = "my name on ENS"
hash = crypto.Keccak256Hash([]byte("my content"))
addr = crypto.PubkeyToAddress(key.PublicKey)
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
name = "my name on ENS"
hash = crypto.Keccak256Hash([]byte("my content"))
addr = crypto.PubkeyToAddress(key.PublicKey)
testAddr = common.HexToAddress("0x1234123412341234123412341234123412341234")
)
func TestENS(t *testing.T) {
@ -74,4 +76,19 @@ func TestENS(t *testing.T) {
if vhost != hash {
t.Fatalf("resolve error, expected %v, got %v", hash.Hex(), vhost.Hex())
}
// set the address for the name
if _, err = ens.SetAddr(name, testAddr); err != nil {
t.Fatalf("can't set address: %v", err)
}
contractBackend.Commit()
// Try to resolve the name to an address
recoveredAddr, err := ens.Addr(name)
if err != nil {
t.Fatalf("expected no error, got %v", err)
}
if vhost != hash {
t.Fatalf("resolve error, expected %v, got %v", testAddr.Hex(), recoveredAddr.Hex())
}
}