Registrar and contractInfo handling

* resolver -> common/registrar
  * global registrar name registry interface
  * add Call to resolver backend interface
  * the hashReg and UrlHing contracts now initialised from global registry
  * initialization of contracts uniform
  * improve errors and more econsistent method names
* common/registrar/ethreg: versioned registrar
* integrate new naming and registrar in natspec
* js console api: setGlobalRegistrar, setHashReg, setUrlHint
* js test TestContract uses mining - tests fixed all pass
* eth/backend: allow PoW test mode (small ethash DAG)
* console jsre refers to resolver.abi/addr,
* cmd/geth/contracts.go moved to common/registrar

cmd/geth/blocktestcmd.go

@@ -86,7 +86,6 @@ func runBlockTest(ctx *cli.Context) {
 }
 
 func runOneBlockTest(ctx *cli.Context, test *tests.BlockTest) (*eth.Ethereum, error) {
-	// TODO remove in favor of logic contained in tests package
 	cfg := utils.MakeEthConfig(ClientIdentifier, Version, ctx)
 	cfg.NewDB = func(path string) (common.Database, error) { return ethdb.NewMemDatabase() }
 	cfg.MaxPeers = 0 // disable network

cmd/geth/contracts.go

-package main
-
-var (
-	globalRegistrar     = `var GlobalRegistrar = web3.eth.contract([{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"name","outputs":[{"name":"o_name","type":"bytes32"}],"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"owner","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"content","outputs":[{"name":"","type":"bytes32"}],"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"addr","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"reserve","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"subRegistrar","outputs":[{"name":"o_subRegistrar","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_newOwner","type":"address"}],"name":"transfer","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_registrar","type":"address"}],"name":"setSubRegistrar","outputs":[],"type":"function"},{"constant":false,"inputs":[],"name":"Registrar","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_a","type":"address"},{"name":"_primary","type":"bool"}],"name":"setAddress","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_content","type":"bytes32"}],"name":"setContent","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"disown","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"register","outputs":[{"name":"","type":"address"}],"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"name","type":"bytes32"}],"name":"Changed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"name","type":"bytes32"},{"indexed":true,"name":"addr","type":"address"}],"name":"PrimaryChanged","type":"event"}]);`
-	globalRegistrarAddr = "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
-)

cmd/geth/js.go

@@ -32,16 +32,17 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/docserver"
 	"github.com/ethereum/go-ethereum/common/natspec"
+	"github.com/ethereum/go-ethereum/common/registrar"
 	"github.com/ethereum/go-ethereum/eth"
 	re "github.com/ethereum/go-ethereum/jsre"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/rpc/api"
 	"github.com/ethereum/go-ethereum/rpc/codec"
 	"github.com/ethereum/go-ethereum/rpc/comms"
+	"github.com/ethereum/go-ethereum/rpc/shared"
 	"github.com/ethereum/go-ethereum/xeth"
 	"github.com/peterh/liner"
 	"github.com/robertkrimen/otto"
-	"github.com/ethereum/go-ethereum/rpc/shared"
 )
 
 type prompter interface {
@@ -69,6 +70,7 @@ func (r dumbterm) PasswordPrompt(p string) (string, error) {
 func (r dumbterm) AppendHistory(string) {}
 
 type jsre struct {
+	ds         *docserver.DocServer
 	re         *re.JSRE
 	ethereum   *eth.Ethereum
 	xeth       *xeth.XEth
@@ -180,6 +182,7 @@ func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, client comms.Et
 	if f == nil {
 		f = js
 	}
+	js.ds = docserver.New("/")
 	js.xeth = xeth.New(ethereum, f)
 	js.wait = js.xeth.UpdateState()
 	js.client = client
@@ -331,15 +334,14 @@ func (js *jsre) apiBindings(f xeth.Frontend) error {
 		utils.Fatalf("Error setting namespaces: %v", err)
 	}
 
-	js.re.Eval(globalRegistrar + "registrar = GlobalRegistrar.at(\"" + globalRegistrarAddr + "\");")
+	js.re.Eval(`var GlobalRegistrar = eth.contract(` + registrar.GlobalRegistrarAbi + `);	 registrar = GlobalRegistrar.at("` + registrar.GlobalRegistrarAddr + `");`)
+
 	return nil
 }
 
-var ds, _ = docserver.New("/")
-
 func (self *jsre) ConfirmTransaction(tx string) bool {
 	if self.ethereum.NatSpec {
-		notice := natspec.GetNotice(self.xeth, tx, ds)
+		notice := natspec.GetNotice(self.xeth, tx, self.ds)
 		fmt.Println(notice)
 		answer, _ := self.Prompt("Confirm Transaction [y/n]")
 		return strings.HasPrefix(strings.Trim(answer, " "), "y")

cmd/geth/main.go

@@ -319,12 +319,6 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.PProfPortFlag,
 		utils.MetricsEnabledFlag,
 		utils.SolcPathFlag,
-		utils.GpoMinGasPriceFlag,
-		utils.GpoMaxGasPriceFlag,
-		utils.GpoFullBlockRatioFlag,
-		utils.GpobaseStepDownFlag,
-		utils.GpobaseStepUpFlag,
-		utils.GpobaseCorrectionFactorFlag,
 	}
 	app.Before = func(ctx *cli.Context) error {
 		utils.SetupLogger(ctx)

common/compiler/solidity.go

@@ -185,12 +185,12 @@ func (sol *Solidity) Compile(source string) (contracts map[string]*Contract, err
 	return
 }
 
-func ExtractInfo(contract *Contract, filename string) (contenthash common.Hash, err error) {
-	contractInfo, err := json.Marshal(contract.Info)
+func SaveInfo(info *ContractInfo, filename string) (contenthash common.Hash, err error) {
+	infojson, err := json.Marshal(info)
 	if err != nil {
 		return
 	}
-	contenthash = common.BytesToHash(crypto.Sha3(contractInfo))
-	err = ioutil.WriteFile(filename, contractInfo, 0600)
+	contenthash = common.BytesToHash(crypto.Sha3(infojson))
+	err = ioutil.WriteFile(filename, infojson, 0600)
 	return
 }

common/compiler/solidity_test.go

@@ -72,19 +72,15 @@ func TestNoCompiler(t *testing.T) {
 	}
 }
 
-func TestExtractInfo(t *testing.T) {
+func TestSaveInfo(t *testing.T) {
 	var cinfo ContractInfo
 	err := json.Unmarshal([]byte(info), &cinfo)
 	if err != nil {
 		t.Errorf("%v", err)
 	}
-	contract := &Contract{
-		Code: "",
-		Info: cinfo,
-	}
 	filename := "/tmp/solctest.info.json"
 	os.Remove(filename)
-	cinfohash, err := ExtractInfo(contract, filename)
+	cinfohash, err := SaveInfo(&cinfo, filename)
 	if err != nil {
 		t.Errorf("error extracting info: %v", err)
 	}

common/docserver/docserver.go

@@ -4,34 +4,25 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"path/filepath"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
-// http://golang.org/pkg/net/http/#RoundTripper
-var (
-	schemes = map[string]func(*DocServer) http.RoundTripper{
-		// Simple File server from local disk file:///etc/passwd :)
-		"file": fileServerOnDocRoot,
-	}
-)
-
-func fileServerOnDocRoot(ds *DocServer) http.RoundTripper {
-	return http.NewFileTransport(http.Dir(ds.DocRoot))
-}
-
 type DocServer struct {
 	*http.Transport
 	DocRoot string
+	schemes []string
 }
 
-func New(docRoot string) (self *DocServer, err error) {
+func New(docRoot string) (self *DocServer) {
 	self = &DocServer{
 		Transport: &http.Transport{},
 		DocRoot:   docRoot,
+		schemes:   []string{"file"},
 	}
-	err = self.RegisterProtocols(schemes)
+	self.RegisterProtocol("file", http.NewFileTransport(http.Dir(self.DocRoot)))
 	return
 }
 
@@ -45,16 +36,48 @@ func (self *DocServer) Client() *http.Client {
 	}
 }
 
-func (self *DocServer) RegisterProtocols(schemes map[string]func(*DocServer) http.RoundTripper) (err error) {
-	for scheme, rtf := range schemes {
-		self.RegisterProtocol(scheme, rtf(self))
+func (self *DocServer) RegisterScheme(scheme string, rt http.RoundTripper) {
+	self.schemes = append(self.schemes, scheme)
+	self.RegisterProtocol(scheme, rt)
+}
+
+func (self *DocServer) HasScheme(scheme string) bool {
+	for _, s := range self.schemes {
+		if s == scheme {
+			return true
+		}
 	}
-	return
+	return false
 }
 
 func (self *DocServer) GetAuthContent(uri string, hash common.Hash) (content []byte, err error) {
+	// retrieve content
+	url := uri
+	fmt.Printf("uri: %v\n", url)
+	content, err = self.Get(url, "")
+	if err != nil {
+		return
+	}
+
+	// check hash to authenticate content
+	hashbytes := crypto.Sha3(content)
+	var chash common.Hash
+	copy(chash[:], hashbytes)
+	if chash != hash {
+		content = nil
+		err = fmt.Errorf("content hash mismatch")
+	}
+
+	return
+
+}
+
+// Get(uri, path) downloads the document at uri, if path is non-empty it
+// is interpreted as a filepath to which the contents are saved
+func (self *DocServer) Get(uri, path string) (content []byte, err error) {
 	// retrieve content
 	resp, err := self.Client().Get(uri)
+
 	defer func() {
 		if resp != nil {
 			resp.Body.Close()
@@ -68,13 +91,10 @@ func (self *DocServer) GetAuthContent(uri string, hash common.Hash) (content []b
 		return
 	}
 
-	// check hash to authenticate content
-	hashbytes := crypto.Sha3(content)
-	var chash common.Hash
-	copy(chash[:], hashbytes)
-	if chash != hash {
-		content = nil
-		err = fmt.Errorf("content hash mismatch")
+	if path != "" {
+		var abspath string
+		abspath, err = filepath.Abs(path)
+		ioutil.WriteFile(abspath, content, 0700)
 	}
 
 	return

common/docserver/docserver_test.go

@@ -2,6 +2,7 @@ package docserver
 
 import (
 	"io/ioutil"
+	"net/http"
 	"os"
 	"testing"
 
@@ -15,7 +16,7 @@ func TestGetAuthContent(t *testing.T) {
 	copy(hash[:], crypto.Sha3([]byte(text)))
 	ioutil.WriteFile("/tmp/test.content", []byte(text), os.ModePerm)
 
-	ds, err := New("/tmp/")
+	ds := New("/tmp/")
 	content, err := ds.GetAuthContent("file:///test.content", hash)
 	if err != nil {
 		t.Errorf("no error expected, got %v", err)
@@ -36,3 +37,18 @@ func TestGetAuthContent(t *testing.T) {
 	}
 
 }
+
+type rt struct{}
+
+func (rt) RoundTrip(req *http.Request) (resp *http.Response, err error) { return }
+
+func TestRegisterScheme(t *testing.T) {
+	ds := New("/tmp/")
+	if ds.HasScheme("scheme") {
+		t.Errorf("expected scheme not to be registered")
+	}
+	ds.RegisterScheme("scheme", rt{})
+	if !ds.HasScheme("scheme") {
+		t.Errorf("expected scheme to be registered")
+	}
+}

common/natspec/natspec.go

@@ -9,7 +9,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/docserver"
-	"github.com/ethereum/go-ethereum/common/resolver"
+	"github.com/ethereum/go-ethereum/common/registrar"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/xeth"
 )
@@ -88,7 +88,7 @@ func New(xeth *xeth.XEth, jsontx string, http *docserver.DocServer) (self *NatSp
 }
 
 // also called by admin.contractInfo.get
-func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, http *docserver.DocServer) (content []byte, err error) {
+func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, ds *docserver.DocServer) (content []byte, err error) {
 	// retrieve contract hash from state
 	codehex := xeth.CodeAt(contractAddress)
 	codeb := xeth.CodeAtBytes(contractAddress)
@@ -99,20 +99,32 @@ func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, http *docserv
 	}
 	codehash := common.BytesToHash(crypto.Sha3(codeb))
 	// set up nameresolver with natspecreg + urlhint contract addresses
-	res := resolver.New(xeth)
+	reg := registrar.New(xeth)
 
 	// resolve host via HashReg/UrlHint Resolver
-	uri, hash, err := res.KeyToUrl(codehash)
+	hash, err := reg.HashToHash(codehash)
 	if err != nil {
 		return
 	}
+	if ds.HasScheme("bzz") {
+		content, err = ds.Get("bzz://"+hash.Hex()[2:], "")
+		if err == nil { // non-fatal
+			return
+		}
+		err = nil
+		//falling back to urlhint
+	}
 
-	// get content via http client and authenticate content using hash
-	content, err = http.GetAuthContent(uri, hash)
+	uri, err := reg.HashToUrl(hash)
 	if err != nil {
 		return
 	}
 
+	// get content via http client and authenticate content using hash
+	content, err = ds.GetAuthContent(uri, hash)
+	if err != nil {
+		return
+	}
 	return
 }
 

common/natspec/natspec_e2e_test.go

@@ -10,7 +10,7 @@ import (
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/docserver"
-	"github.com/ethereum/go-ethereum/common/resolver"
+	"github.com/ethereum/go-ethereum/common/registrar"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -73,8 +73,7 @@ const (
 )
 
 type testFrontend struct {
-	t *testing.T
-	// resolver    *resolver.Resolver
+	t           *testing.T
 	ethereum    *eth.Ethereum
 	xeth        *xe.XEth
 	coinbase    common.Address
@@ -91,10 +90,7 @@ func (self *testFrontend) UnlockAccount(acc []byte) bool {
 
 func (self *testFrontend) ConfirmTransaction(tx string) bool {
 	if self.wantNatSpec {
-		ds, err := docserver.New("/tmp/")
-		if err != nil {
-			self.t.Errorf("Error creating DocServer: %v", err)
-		}
+		ds := docserver.New("/tmp/")
 		self.lastConfirm = GetNotice(self.xeth, tx, ds)
 	}
 	return true
@@ -159,11 +155,16 @@ func testInit(t *testing.T) (self *testFrontend) {
 	self.stateDb = self.ethereum.ChainManager().State().Copy()
 
 	// initialise the registry contracts
-	// self.resolver.CreateContracts(addr)
-	resolver.New(self.xeth).CreateContracts(addr)
+	reg := registrar.New(self.xeth)
+	err = reg.SetHashReg("", addr)
+	if err != nil {
+		t.Errorf("error creating HashReg: %v", err)
+	}
+	err = reg.SetUrlHint("", addr)
+	if err != nil {
+		t.Errorf("error creating UrlHint: %v", err)
+	}
 	self.applyTxs()
-	// t.Logf("HashReg contract registered at %v", resolver.HashRegContractAddress)
-	// t.Logf("URLHint contract registered at %v", resolver.UrlHintContractAddress)
 
 	return
 
@@ -192,13 +193,20 @@ func TestNatspecE2E(t *testing.T) {
 	dochash := common.BytesToHash(crypto.Sha3([]byte(testContractInfo)))
 
 	// take the codehash for the contract we wanna test
-	// codehex := tf.xeth.CodeAt(resolver.HashRegContractAddress)
-	codeb := tf.xeth.CodeAtBytes(resolver.HashRegContractAddress)
+	// codehex := tf.xeth.CodeAt(registar.HashRegAddr)
+	codeb := tf.xeth.CodeAtBytes(registrar.HashRegAddr)
 	codehash := common.BytesToHash(crypto.Sha3(codeb))
 
 	// use resolver to register codehash->dochash->url
-	registry := resolver.New(tf.xeth)
-	_, err := registry.Register(tf.coinbase, codehash, dochash, "file:///"+testFileName)
+	// test if globalregistry works
+	// registrar.HashRefAddr = "0x0"
+	// registrar.UrlHintAddr = "0x0"
+	reg := registrar.New(tf.xeth)
+	_, err := reg.SetHashToHash(tf.coinbase, codehash, dochash)
+	if err != nil {
+		t.Errorf("error registering: %v", err)
+	}
+	_, err = reg.SetUrlToHash(tf.coinbase, dochash, "file:///"+testFileName)
 	if err != nil {
 		t.Errorf("error registering: %v", err)
 	}
@@ -209,18 +217,19 @@ func TestNatspecE2E(t *testing.T) {
 	// now using the same transactions to check confirm messages
 
 	tf.wantNatSpec = true // this is set so now the backend uses natspec confirmation
-	_, err = registry.RegisterContentHash(tf.coinbase, codehash, dochash)
+	_, err = reg.SetHashToHash(tf.coinbase, codehash, dochash)
 	if err != nil {
 		t.Errorf("error calling contract registry: %v", err)
 	}
 
+	fmt.Printf("GlobalRegistrar: %v, HashReg: %v, UrlHint: %v\n", registrar.GlobalRegistrarAddr, registrar.HashRegAddr, registrar.UrlHintAddr)
 	if tf.lastConfirm != testExpNotice {
 		t.Errorf("Wrong confirm message. expected '%v', got '%v'", testExpNotice, tf.lastConfirm)
 	}
 
 	// test unknown method
-	exp := fmt.Sprintf(testExpNotice2, resolver.HashRegContractAddress)
-	_, err = registry.SetOwner(tf.coinbase)
+	exp := fmt.Sprintf(testExpNotice2, registrar.HashRegAddr)
+	_, err = reg.SetOwner(tf.coinbase)
 	if err != nil {
 		t.Errorf("error setting owner: %v", err)
 	}
@@ -230,9 +239,9 @@ func TestNatspecE2E(t *testing.T) {
 	}
 
 	// test unknown contract
-	exp = fmt.Sprintf(testExpNotice3, resolver.UrlHintContractAddress)
+	exp = fmt.Sprintf(testExpNotice3, registrar.UrlHintAddr)
 
-	_, err = registry.RegisterUrl(tf.coinbase, dochash, "file:///test.content")
+	_, err = reg.SetUrlToHash(tf.coinbase, dochash, "file:///test.content")
 	if err != nil {
 		t.Errorf("error registering: %v", err)
 	}

common/registrar/ethreg/ethreg.go

+package ethreg
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common/registrar"
+	"github.com/ethereum/go-ethereum/xeth"
+)
+
+// implements a versioned Registrar on an archiving full node
+type EthReg struct {
+	backend  *xeth.XEth
+	registry *registrar.Registrar
+}
+
+func New(xe *xeth.XEth) (self *EthReg) {
+	self = &EthReg{backend: xe}
+	self.registry = registrar.New(xe)
+	return
+}
+
+func (self *EthReg) Registry() *registrar.Registrar {
+	return self.registry
+}
+
+func (self *EthReg) Resolver(n *big.Int) *registrar.Registrar {
+	xe := self.backend
+	if n != nil {
+		xe = self.backend.AtStateNum(n.Int64())
+	}
+	return registrar.New(xe)
+}

common/resolver/resolver_test.go → common/registrar/registrar_test.go

-package resolver
+package registrar
 
 import (
 	"testing"
@@ -20,22 +20,22 @@ var (
 )
 
 func NewTestBackend() *testBackend {
-	HashRegContractAddress = common.BigToAddress(common.Big0).Hex()[2:]
-	UrlHintContractAddress = common.BigToAddress(common.Big1).Hex()[2:]
+	HashRegAddr = common.BigToAddress(common.Big0).Hex() //[2:]
+	UrlHintAddr = common.BigToAddress(common.Big1).Hex() //[2:]
 	self := &testBackend{}
 	self.contracts = make(map[string](map[string]string))
 
-	self.contracts[HashRegContractAddress] = make(map[string]string)
+	self.contracts[HashRegAddr[2:]] = make(map[string]string)
 	key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
-	self.contracts[HashRegContractAddress][key] = hash.Hex()
+	self.contracts[HashRegAddr[2:]][key] = hash.Hex()
 
-	self.contracts[UrlHintContractAddress] = make(map[string]string)
+	self.contracts[UrlHintAddr[2:]] = make(map[string]string)
 	mapaddr := storageMapping(storageIdx2Addr(1), hash[:])
 
 	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
-	self.contracts[UrlHintContractAddress][key] = common.ToHex([]byte(url))
+	self.contracts[UrlHintAddr[2:]][key] = common.ToHex([]byte(url))
 	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
-	self.contracts[UrlHintContractAddress][key] = "0x00"
+	self.contracts[UrlHintAddr[2:]][key] = "0x0"
 	return self
 }
 
@@ -52,42 +52,45 @@ func (self *testBackend) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, ga
 	return "", nil
 }
 
-func TestKeyToContentHash(t *testing.T) {
+func (self *testBackend) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, string, error) {
+	return "", "", nil
+}
+
+func TestSetGlobalRegistrar(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b)
-
-	got, err := res.KeyToContentHash(codehash)
+	err := res.SetGlobalRegistrar("addresshex", common.BigToAddress(common.Big1))
 	if err != nil {
-		t.Errorf("expected no error, got %v", err)
-	} else {
-		if got != hash {
-			t.Errorf("incorrect result, expected '%v', got '%v'", hash.Hex(), got.Hex())
-		}
+		t.Errorf("unexpected error: %v'", err)
 	}
 }
 
-func TestContentHashToUrl(t *testing.T) {
+func TestHashToHash(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b)
-	got, err := res.ContentHashToUrl(hash)
+	// res.SetHashReg()
+
+	got, err := res.HashToHash(codehash)
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	} else {
-		if got != url {
-			t.Errorf("incorrect result, expected '%v', got '%s'", url, got)
+		if got != hash {
+			t.Errorf("incorrect result, expected '%v', got '%v'", hash.Hex(), got.Hex())
 		}
 	}
 }
 
-func TestKeyToUrl(t *testing.T) {
+func TestHashToUrl(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b)
-	got, _, err := res.KeyToUrl(codehash)
+	// res.SetUrlHint()
+
+	got, err := res.HashToUrl(hash)
 	if err != nil {
-		t.Errorf("expected no error, got %v", err)
+		t.Errorf("expected 	 error, got %v", err)
 	} else {
 		if got != url {
-			t.Errorf("incorrect result, expected \n'%s', got \n'%s'", url, got)
+			t.Errorf("incorrect result, expected '%v', got '%s'", url, got)
 		}
 	}
 }

common/resolver/contracts.go

-package resolver
-
-const ( // built-in contracts address and code
-	ContractCodeURLhint = "0x60c180600c6000396000f30060003560e060020a90048063300a3bbf14601557005b6024600435602435604435602a565b60006000f35b6000600084815260200190815260200160002054600160a060020a0316600014806078575033600160a060020a03166000600085815260200190815260200160002054600160a060020a0316145b607f5760bc565b336000600085815260200190815260200160002081905550806001600085815260200190815260200160002083610100811060b657005b01819055505b50505056"
-	/*
-		contract URLhint {
-			function register(uint256 _hash, uint8 idx, uint256 _url) {
-				if (owner[_hash] == 0 || owner[_hash] == msg.sender) {
-					owner[_hash] = msg.sender;
-					url[_hash][idx] = _url;
-				}
-			}
-			mapping (uint256 => address) owner;
-			mapping (uint256 => uint256[256]) url;
-		}
-	*/
-
-	ContractCodeHashReg = "0x609880600c6000396000f30060003560e060020a9004806331e12c2014601f578063d66d6c1014602b57005b6025603d565b60006000f35b6037600435602435605d565b60006000f35b600054600160a060020a0316600014605357605b565b336000819055505b565b600054600160a060020a031633600160a060020a031614607b576094565b8060016000848152602001908152602001600020819055505b505056"
-	/*
-		   contract HashReg {
-			function setowner() {
-				if (owner == 0) {
-					owner = msg.sender;
-				}
-			}
-		   	function register(uint256 _key, uint256 _content) {
-				if (msg.sender == owner) {
-		   			content[_key] = _content;
-				}
-		   	}
-			address owner;
-		   	mapping (uint256 => uint256) content;
-		   }
-	*/
-
-)

common/resolver/resolver.go

-package resolver
-
-import (
-	"encoding/binary"
-	"fmt"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/logger"
-	"github.com/ethereum/go-ethereum/logger/glog"
-)
-
-/*
-Resolver implements the Ethereum DNS mapping
-HashReg : Key Hash (hash of domain name or contract code) -> Content Hash
-UrlHint : Content Hash -> Url Hint
-
-The resolver is meant to be called by the roundtripper transport implementation
-of a url scheme
-*/
-
-// // contract addresses will be hardcoded after they're created
-var UrlHintContractAddress, HashRegContractAddress string
-
-const (
-	txValue    = "0"
-	txGas      = "100000"
-	txGasPrice = "1000000000000"
-)
-
-func abi(s string) string {
-	return common.ToHex(crypto.Sha3([]byte(s))[:4])
-}
-
-var (
-	registerContentHashAbi = abi("register(uint256,uint256)")
-	registerUrlAbi         = abi("register(uint256,uint8,uint256)")
-	setOwnerAbi            = abi("setowner()")
-)
-
-type Backend interface {
-	StorageAt(string, string) string
-	Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error)
-}
-
-type Resolver struct {
-	backend Backend
-}
-
-func New(eth Backend) *Resolver {
-	return &Resolver{eth}
-}
-
-// for testing and play temporarily
-// ideally the HashReg and UrlHint contracts should be in the genesis block
-// if we got build-in support for natspec/contract info
-// there should be only one of these officially endorsed
-// addresses as constants
-// TODO: could get around this with namereg, check
-func (self *Resolver) CreateContracts(addr common.Address) (err error) {
-	HashRegContractAddress, err = self.backend.Transact(addr.Hex(), "", "", txValue, txGas, txGasPrice, ContractCodeHashReg)
-	if err != nil {
-		return
-	}
-	UrlHintContractAddress, err = self.backend.Transact(addr.Hex(), "", "", txValue, txGas, txGasPrice, ContractCodeURLhint)
-	glog.V(logger.Detail).Infof("HashReg @ %v\nUrlHint @ %v\n", HashRegContractAddress, UrlHintContractAddress)
-	return
-}
-
-// called as first step in the registration process on HashReg
-func (self *Resolver) SetOwner(address common.Address) (txh string, err error) {
-	return self.backend.Transact(
-		address.Hex(),
-		HashRegContractAddress,
-		"", txValue, txGas, txGasPrice,
-		setOwnerAbi,
-	)
-}
-
-// registers some content hash to a key/code hash
-// e.g., the contract Info combined Json Doc's ContentHash
-// to CodeHash of a contract or hash of a domain
-// kept
-func (self *Resolver) RegisterContentHash(address common.Address, codehash, dochash common.Hash) (txh string, err error) {
-	_, err = self.SetOwner(address)
-	if err != nil {
-		return
-	}
-	codehex := common.Bytes2Hex(codehash[:])
-	dochex := common.Bytes2Hex(dochash[:])
-
-	data := registerContentHashAbi + codehex + dochex
-	return self.backend.Transact(
-		address.Hex(),
-		HashRegContractAddress,
-		"", txValue, txGas, txGasPrice,
-		data,
-	)
-}
-
-// registers a url to a content hash so that the content can be fetched
-// address is used as sender for the transaction and will be the owner of a new
-// registry entry on first time use
-// FIXME: silently doing nothing if sender is not the owner
-// note that with content addressed storage, this step is no longer necessary
-// it could be purely
-func (self *Resolver) RegisterUrl(address common.Address, hash common.Hash, url string) (txh string, err error) {
-	hashHex := common.Bytes2Hex(hash[:])
-	var urlHex string
-	urlb := []byte(url)
-	var cnt byte
-	n := len(urlb)
-
-	for n > 0 {
-		if n > 32 {
-			n = 32
-		}
-		urlHex = common.Bytes2Hex(urlb[:n])
-		urlb = urlb[n:]
-		n = len(urlb)
-		bcnt := make([]byte, 32)
-		bcnt[31] = cnt
-		data := registerUrlAbi +
-			hashHex +
-			common.Bytes2Hex(bcnt) +
-			common.Bytes2Hex(common.Hex2BytesFixed(urlHex, 32))
-		txh, err = self.backend.Transact(
-			address.Hex(),
-			UrlHintContractAddress,
-			"", txValue, txGas, txGasPrice,
-			data,
-		)
-		if err != nil {
-			return
-		}
-		cnt++
-	}
-	return
-}
-
-func (self *Resolver) Register(address common.Address, codehash, dochash common.Hash, url string) (txh string, err error) {
-
-	_, err = self.RegisterContentHash(address, codehash, dochash)
-	if err != nil {
-		return
-	}
-	return self.RegisterUrl(address, dochash, url)
-}
-
-// resolution is costless non-transactional
-// implemented as direct retrieval from  db
-func (self *Resolver) KeyToContentHash(khash common.Hash) (chash common.Hash, err error) {
-	// look up in hashReg
-	at := common.Bytes2Hex(common.FromHex(HashRegContractAddress))
-	key := storageAddress(storageMapping(storageIdx2Addr(1), khash[:]))
-	hash := self.backend.StorageAt(at, key)
-
-	if hash == "0x0" || len(hash) < 3 {
-		err = fmt.Errorf("content hash not found for '%v'", khash.Hex())
-		return
-	}
-	copy(chash[:], common.Hex2BytesFixed(hash[2:], 32))
-	return
-}
-
-// retrieves the url-hint for the content hash -
-// if we use content addressed storage, this step is no longer necessary
-func (self *Resolver) ContentHashToUrl(chash common.Hash) (uri string, err error) {
-	// look up in URL reg
-	var str string = " "
-	var idx uint32
-	for len(str) > 0 {
-		mapaddr := storageMapping(storageIdx2Addr(1), chash[:])
-		key := storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(idx)))
-		hex := self.backend.StorageAt(UrlHintContractAddress, key)
-		str = string(common.Hex2Bytes(hex[2:]))
-		l := len(str)
-		for (l > 0) && (str[l-1] == 0) {
-			l--
-		}
-		str = str[:l]
-		uri = uri + str
-		idx++
-	}
-
-	if len(uri) == 0 {
-		err = fmt.Errorf("GetURLhint: URL hint not found for '%v'", chash.Hex())
-	}
-	return
-}
-
-func (self *Resolver) KeyToUrl(key common.Hash) (uri string, hash common.Hash, err error) {
-	// look up in urlHint
-	hash, err = self.KeyToContentHash(key)
-	if err != nil {
-		return
-	}
-	uri, err = self.ContentHashToUrl(hash)
-	return
-}
-
-func storageIdx2Addr(varidx uint32) []byte {
-	data := make([]byte, 32)
-	binary.BigEndian.PutUint32(data[28:32], varidx)
-	return data
-}
-
-func storageMapping(addr, key []byte) []byte {
-	data := make([]byte, 64)
-	copy(data[0:32], key[0:32])
-	copy(data[32:64], addr[0:32])
-	sha := crypto.Sha3(data)
-	return sha
-}
-
-func storageFixedArray(addr, idx []byte) []byte {
-	var carry byte
-	for i := 31; i >= 0; i-- {
-		var b byte = addr[i] + idx[i] + carry
-		if b < addr[i] {
-			carry = 1
-		} else {
-			carry = 0
-		}
-		addr[i] = b
-	}
-	return addr
-}
-
-func storageAddress(addr []byte) string {
-	return common.ToHex(addr)
-}

eth/backend.go

@@ -70,6 +70,7 @@ type Config struct {
 	VmDebug   bool
 	NatSpec   bool
 	AutoDAG   bool
+	PowTest   bool
 
 	MaxPeers        int
 	MaxPendingPeers int
@@ -221,6 +222,7 @@ type Ethereum struct {
 	NatSpec       bool
 	DataDir       string
 	AutoDAG       bool
+	PowTest       bool
 	autodagquit   chan bool
 	etherbase     common.Address
 	clientVersion string
@@ -329,6 +331,7 @@ func New(config *Config) (*Ethereum, error) {
 		MinerThreads:            config.MinerThreads,
 		SolcPath:                config.SolcPath,
 		AutoDAG:                 config.AutoDAG,
+		PowTest:                 config.PowTest,
 		GpoMinGasPrice:          config.GpoMinGasPrice,
 		GpoMaxGasPrice:          config.GpoMaxGasPrice,
 		GpoFullBlockRatio:       config.GpoFullBlockRatio,
@@ -337,7 +340,15 @@ func New(config *Config) (*Ethereum, error) {
 		GpobaseCorrectionFactor: config.GpobaseCorrectionFactor,
 	}
 
-	eth.pow = ethash.New()
+	if config.PowTest {
+		glog.V(logger.Info).Infof("ethash used in test mode")
+		eth.pow, err = ethash.NewForTesting()
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		eth.pow = ethash.New()
+	}
 	genesis := core.GenesisBlock(uint64(config.GenesisNonce), stateDb)
 	eth.chainManager, err = core.NewChainManager(genesis, blockDb, stateDb, extraDb, eth.pow, eth.EventMux())
 	if err != nil {

rpc/api/admin.go

@@ -3,7 +3,9 @@ package api
 import (
 	"fmt"
 	"io"
+	"math/big"
 	"os"
+	"time"
 
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
@@ -244,3 +246,49 @@ func (self *adminApi) StopRPC(req *shared.Request) (interface{}, error) {
 	comms.StopHttp()
 	return true, nil
 }
+
+func (self *adminApi) SleepBlocks(req *shared.Request) (interface{}, error) {
+	args := new(SleepBlocksArgs)
+	if err := self.coder.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+	var timer <-chan time.Time
+	var height *big.Int
+	var err error
+	if args.Timeout > 0 {
+		timer = time.NewTimer(time.Duration(args.Timeout) * time.Second).C
+	}
+
+	height = new(big.Int).Add(self.xeth.CurrentBlock().Number(), big.NewInt(args.N))
+	height, err = sleepBlocks(self.xeth.UpdateState(), height, timer)
+	if err != nil {
+		return nil, err
+	}
+	return height.Uint64(), nil
+}
+
+func sleepBlocks(wait chan *big.Int, height *big.Int, timer <-chan time.Time) (newHeight *big.Int, err error) {
+	wait <- height
+	select {
+	case <-timer:
+		// if times out make sure the xeth loop does not block
+		go func() {
+			select {
+			case wait <- nil:
+			case <-wait:
+			}
+		}()
+		return nil, fmt.Errorf("timeout")
+	case newHeight = <-wait:
+	}
+	return
+}
+
+// 	sec, err := call.Argument(0).ToInteger()
+// 	if err != nil {
+// 		fmt.Println(err)
+// 		return otto.FalseValue()
+// 	}
+// 	time.Sleep(time.Duration(sec) * time.Second)
+// 	return otto.UndefinedValue()
+// }

rpc/api/admin_args.go

@@ -147,3 +147,34 @@ func (args *StartRPCArgs) UnmarshalJSON(b []byte) (err error) {
 
 	return nil
 }
+
+type SleepBlocksArgs struct {
+	N       int64
+	Timeout int64
+}
+
+func (args *SleepBlocksArgs) UnmarshalJSON(b []byte) (err error) {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
+		return shared.NewDecodeParamError(err.Error())
+	}
+
+	args.N = 1
+	args.Timeout = 0
+	if len(obj) >= 1 {
+		if n, ok := obj[0].(int64); ok {
+			args.N = n
+		} else {
+			return shared.NewInvalidTypeError("N", "not an integer")
+		}
+	}
+
+	if len(obj) >= 2 {
+		if n, ok := obj[1].(int64); ok {
+			args.N = n
+		} else {
+			return shared.NewInvalidTypeError("Timeout", "not an integer")
+		}
+	}
+	return nil
+}