From ec3db0f56c779387132dcf2049ed32bf4ed34a4f Mon Sep 17 00:00:00 2001 From: Martin Holst Swende Date: Mon, 16 Apr 2018 14:04:32 +0200 Subject: [PATCH] cmd/clef, signer: initial poc of the standalone signer (#16154) * signer: introduce external signer command * cmd/signer, rpc: Implement new signer. Add info about remote user to Context * signer: refactored request/response, made use of urfave.cli * cmd/signer: Use common flags * cmd/signer: methods to validate calldata against abi * cmd/signer: work on abi parser * signer: add mutex around UI * cmd/signer: add json 4byte directory, remove passwords from api * cmd/signer: minor changes * cmd/signer: Use ErrRequestDenied, enable lightkdf * cmd/signer: implement tests * cmd/signer: made possible for UI to modify tx parameters * cmd/signer: refactors, removed channels in ui comms, added UI-api via stdin/out * cmd/signer: Made lowercase json-definitions, added UI-signer test functionality * cmd/signer: update documentation * cmd/signer: fix bugs, improve abi detection, abi argument display * cmd/signer: minor change in json format * cmd/signer: rework json communication * cmd/signer: implement mixcase addresses in API, fix json id bug * cmd/signer: rename fromaccount, update pythonpoc with new json encoding format * cmd/signer: make use of new abi interface * signer: documentation * signer/main: remove redundant option * signer: implement audit logging * signer: create package 'signer', minor changes * common: add 0x-prefix to mixcaseaddress in json marshalling + validation * signer, rules, storage: implement rules + ephemeral storage for signer rules * signer: implement OnApprovedTx, change signing response (API BREAKAGE) * signer: refactoring + documentation * signer/rules: implement dispatching to next handler * signer: docs * signer/rules: hide json-conversion from users, ensure context is cleaned * signer: docs * signer: implement validation rules, change signature of call_info * signer: fix log flaw with string pointer * signer: implement custom 4byte databsae that saves submitted signatures * signer/storage: implement aes-gcm-backed credential storage * accounts: implement json unmarshalling of url * signer: fix listresponse, fix gas->uint64 * node: make http/ipc start methods public * signer: add ipc capability+review concerns * accounts: correct docstring * signer: address review concerns * rpc: go fmt -s * signer: review concerns+ baptize Clef * signer,node: move Start-functions to separate file * signer: formatting --- accounts/url.go | 16 + accounts/usbwallet/hub.go | 2 +- accounts/usbwallet/wallet.go | 2 +- cmd/clef/4byte.json | 1 + cmd/clef/README.md | 864 +++++++++++++++++++++++++ cmd/clef/extapi_changelog.md | 25 + cmd/clef/intapi_changelog.md | 86 +++ cmd/clef/main.go | 640 ++++++++++++++++++ cmd/clef/pythonsigner.py | 179 +++++ cmd/clef/rules.md | 236 +++++++ cmd/clef/sign_flow.png | Bin 0 -> 36397 bytes cmd/clef/tutorial.md | 198 ++++++ common/types.go | 62 ++ common/types_test.go | 44 ++ node/node.go | 95 +-- rpc/client.go | 53 +- rpc/endpoints.go | 120 ++++ rpc/http.go | 7 +- rpc/server.go | 11 +- signer/core/abihelper.go | 256 ++++++++ signer/core/abihelper_test.go | 247 +++++++ signer/core/api.go | 500 ++++++++++++++ signer/core/api_test.go | 386 +++++++++++ signer/core/auditlog.go | 110 ++++ signer/core/cliui.go | 247 +++++++ signer/core/stdioui.go | 113 ++++ signer/core/types.go | 95 +++ signer/core/validation.go | 163 +++++ signer/core/validation_test.go | 139 ++++ signer/rules/deps/bignumber.js | 4 + signer/rules/deps/bindata.go | 235 +++++++ signer/rules/deps/deps.go | 21 + signer/rules/rules.go | 248 +++++++ signer/rules/rules_test.go | 631 ++++++++++++++++++ signer/storage/aes_gcm_storage.go | 164 +++++ signer/storage/aes_gcm_storage_test.go | 115 ++++ signer/storage/storage.go | 62 ++ 37 files changed, 6283 insertions(+), 94 deletions(-) create mode 100644 cmd/clef/4byte.json create mode 100644 cmd/clef/README.md create mode 100644 cmd/clef/extapi_changelog.md create mode 100644 cmd/clef/intapi_changelog.md create mode 100644 cmd/clef/main.go create mode 100644 cmd/clef/pythonsigner.py create mode 100644 cmd/clef/rules.md create mode 100644 cmd/clef/sign_flow.png create mode 100644 cmd/clef/tutorial.md create mode 100644 rpc/endpoints.go create mode 100644 signer/core/abihelper.go create mode 100644 signer/core/abihelper_test.go create mode 100644 signer/core/api.go create mode 100644 signer/core/api_test.go create mode 100644 signer/core/auditlog.go create mode 100644 signer/core/cliui.go create mode 100644 signer/core/stdioui.go create mode 100644 signer/core/types.go create mode 100644 signer/core/validation.go create mode 100644 signer/core/validation_test.go create mode 100644 signer/rules/deps/bignumber.js create mode 100644 signer/rules/deps/bindata.go create mode 100644 signer/rules/deps/deps.go create mode 100644 signer/rules/rules.go create mode 100644 signer/rules/rules_test.go create mode 100644 signer/storage/aes_gcm_storage.go create mode 100644 signer/storage/aes_gcm_storage_test.go create mode 100644 signer/storage/storage.go diff --git a/accounts/url.go b/accounts/url.go index 47f9d8ee4b..21df668efd 100644 --- a/accounts/url.go +++ b/accounts/url.go @@ -74,6 +74,22 @@ func (u URL) MarshalJSON() ([]byte, error) { return json.Marshal(u.String()) } +// UnmarshalJSON parses url. +func (u *URL) UnmarshalJSON(input []byte) error { + var textUrl string + err := json.Unmarshal(input, &textUrl) + if err != nil { + return err + } + url, err := parseURL(textUrl) + if err != nil { + return err + } + u.Scheme = url.Scheme + u.Path = url.Path + return nil +} + // Cmp compares x and y and returns: // // -1 if x < y diff --git a/accounts/usbwallet/hub.go b/accounts/usbwallet/hub.go index 61fc98ccc8..640320bc91 100644 --- a/accounts/usbwallet/hub.go +++ b/accounts/usbwallet/hub.go @@ -127,7 +127,7 @@ func (hub *Hub) refreshWallets() { // breaking the Ledger protocol if that is waiting for user confirmation. This // is a bug acknowledged at Ledger, but it won't be fixed on old devices so we // need to prevent concurrent comms ourselves. The more elegant solution would - // be to ditch enumeration in favor of hutplug events, but that don't work yet + // be to ditch enumeration in favor of hotplug events, but that don't work yet // on Windows so if we need to hack it anyway, this is more elegant for now. hub.commsLock.Lock() if hub.commsPend > 0 { // A confirmation is pending, don't refresh diff --git a/accounts/usbwallet/wallet.go b/accounts/usbwallet/wallet.go index 8b3b5a5224..6cef6e0fb0 100644 --- a/accounts/usbwallet/wallet.go +++ b/accounts/usbwallet/wallet.go @@ -99,7 +99,7 @@ type wallet struct { // // As such, a hardware wallet needs two locks to function correctly. A state // lock can be used to protect the wallet's software-side internal state, which - // must not be held exlusively during hardware communication. A communication + // must not be held exclusively during hardware communication. A communication // lock can be used to achieve exclusive access to the device itself, this one // however should allow "skipping" waiting for operations that might want to // use the device, but can live without too (e.g. account self-derivation). diff --git a/cmd/clef/4byte.json b/cmd/clef/4byte.json new file mode 100644 index 0000000000..5603d5931d --- /dev/null +++ b/cmd/clef/4byte.json @@ -0,0 +1 @@ +{"0x22ec1244": "shaBid(bytes32,address,uint256,bytes32)", "0xcae9ca51": "approveAndCall(address,uint256,bytes)", "0x4fb2e45d": "transferOwner(address)", "0x7741b4ec": "RandomNumberFromSeed(uint256)", "0x267127ec": "getTokenSettings()", "0xb7213bd4": "readLog(uint256)", "0x3018205f": "getController()", "0xc8edf65e": "GetAndReduceFeesByFraction(uint256)", "0xeec2b628": "beforeExecute(address)", "0xfc0c546a": "token()", "0x40a3d246": "toggle()", "0x70983e91": "startBoardProposal(uint256,address)", "0x6b5caec4": "setBot(address)", "0x78524b2e": "halveMinQuorum()", "0x2c60a055": "MapTest()", "0xc2fb8f36": "TinyHuman(address,address,address)", "0x6822abae": "getMinimumCallCost(uint256)", "0x6f9fb98a": "getContractBalance()", "0x5c17f9f4": "approve(address,uint256,bytes)", "0x504ac982": "transfer(string,string)", "0x06e53f47": "whichChainIsThis()", "0xf359671c": "withdrawWithReference(address,uint256,string)", "0xf97d0591": "parseTimestamp(uint256)", "0xd3c0715b": "vote(uint256,bool,string)", "0x6b069710": "scheduleCall(address,bytes,uint256,uint256,uint8)", "0x37ae43a3": "BetOnHashV81()", "0xab519020": "calcShare(uint256,uint256)", "0x6572ae13": "calculateWinner(uint256,uint256)", "0x6aaba012": "ErrorGenerator()", "0xfe05e8b1": "assertFact(uint256,string)", "0x6e940a29": "changeHost(address)", "0x669ee827": "RegisterDevice()", "0x6f4dd69c": "testSetBalanceUpdatesSupply()", "0x4401a6e4": "safeSend(address)", "0x27dc297e": "__callback(bytes32,string)", "0xe4dedc7f": "DeleteContract()", "0x7fef036e": "totalEntries()", "0x64325ddb": "currentClaimPrice()", "0x2fc0aad3": "isNumericString(string)", "0xbc45d789": "setConfigUint(int256,bytes32,uint256)", "0xee95feaf": "isSeller(address)", "0x358d5dc2": "getIsCashed(uint256,uint256)", "0x1397fdbd": "getShares(address,bytes,int256[])", "0x2d8c1c35": "level_up()", "0x24600fc3": "withdrawFunds()", "0x05f8b6f5": "_rewireIdentities(bytes32[],uint256,uint256,uint32)", "0x1840f0ca": "countVotes(uint256)", "0xd44aadf7": "initROS()", "0xca1d209d": "fund(uint256)", "0x5fa513d5": "findPtr(uint256,uint256,uint256,uint256)", "0x3c314a91": "playerGetPendingTxByAddress(address)", "0xd5582205": "getCertifiedStudentAtIndex(uint256)", "0xe45ebe93": "checkVoteStatus()", "0xcd9380d5": "testSetBalanceSetsSupplyCumulatively()", "0x637e86eb": "totBOTs()", "0x5bb47808": "setFactory(address)", "0x674cc1f5": "getMarketHashes(bytes32[])", "0x648bf774": "recover(address,address)", "0x0221038a": "payOut(address,uint256)", "0x4016535a": "parseBlock(bytes,uint256)", "0xa3908e1b": "convert(uint256)", "0xd9e7ee1c": "new_game(uint256,uint256)", "0x929e626e": "getShareDistribution(bytes32)", "0xa20495d3": "Managed()", "0xd409ddda": "EtherizationUtils()", "0xcb2b9031": "addressToBytes(address,address)", "0xfff3c457": "readMessages(uint256)", "0x043753ba": "makeDecision(uint256,bool)", "0x85b4bb53": "getSettings()", "0x60726abb": "copy()", "0xe50d0473": "SetRank(uint8,address,uint16)", "0x54ae8492": "CustodialForward()", "0xd6d02c51": "whois(string)", "0xcb712535": "_transferFrom(address,address,uint256)", "0xb152f19e": "getFirstSchedulableBlock()", "0x9334ab61": "Infos()", "0x88a49164": "testErrorUnauthorizedTransfer()", "0x17db59a4": "dEthereumlotteryNet(address,address,address)", "0xf85aefba": "testBitsSetFailIndexOOB()", "0xae99847b": "daylimit(uint256)", "0xd93e7573": "disown(bytes32)", "0xa5468081": "Pyramid(address)", "0x00e7d289": "registerListening(address)", "0x57ee24af": "getNum(bytes32,uint256)", "0xdaea85c5": "approve(address)", "0x36ffa905": "getMyProposals()", "0x7143059f": "getParticipant(address)", "0x55ff440a": "castStringToUInt(string)", "0x6a4a6b6e": "_myAddressHelper()", "0xb67fabdf": "scheduleTransaction(address,uint256,uint256,bytes)", "0xbcca1fd3": "changeVotingRules(uint256,uint256,int256)", "0x1d3390a1": "carefulSendWithFixedGas(address,uint256,uint256)", "0x45104b16": "EXECUTION_GAS_OVERHEAD()", "0xa26759cb": "addFunds()", "0x232523e8": "forceDivestOfAllInvestors()", "0x7e904a48": "getNumContents(uint256)", "0xb69c0896": "BaseScheduler(address,address,uint256)", "0xc6ed8e1b": "getApprovedProxys()", "0x4d1f8c31": "owner(uint64)", "0x17c65aa7": "getMaxLossAfterTrade(address,uint256,int256,int256)", "0x2c02d622": "precalculate()", "0xa035b1fe": "price()", "0x43b0e8df": "set(uint256,uint256,uint256)", "0x9b5fde7d": "payOut(uint256,string)", "0x89fcd099": "getApproval(address,address)", "0x4c0eceb5": "plusOnePonzi()", "0x880cdc31": "updateOwner(address)", "0xdab80d6f": "addSponsor(address)", "0x0fcda174": "getAccountTokenBalance(address,address)", "0xa55cab95": "getName(uint8,uint8)", "0x934db458": "Big()", "0xeb782d8c": "ContentSeries(address)", "0xdbfef710": "getDefaultRequiredGas()", "0x4f09eba7": "proxyApprove(address,uint256,bytes32)", "0xf4c5ab7c": "validateCallGas(uint256,uint256)", "0x376fe102": "userId(address)", "0x922dd59a": "icapTransfer(bytes,address,bytes,uint256)", "0x7318b453": "setVotetUntil(uint8)", "0xb8c86aa6": "getArraySettingResult()", "0x37bdc99b": "release(uint256)", "0x7cbcc254": "__reset__()", "0x37664643": "retractLatestRevision(bytes32)", "0x4b031d0f": "shortSellShares(bytes,uint8,uint256,uint256)", "0xad8d5f48": "exec(address,bytes,uint256)", "0x2f95b833": "requiredStackDepth()", "0xe3848e5b": "thing(string,string,string)", "0xaa272d4b": "getNodeIndexId(bytes)", "0xd7f746ce": "tickingBomb()", "0x3b84edbd": "setRNG(address)", "0x1fb2f2a0": "testUpdateLatestRevision()", "0xb7fba4d3": "getProxy(address)", "0x4b8e1ba8": "isMinter(int256,address)", "0xba4c206e": "removeCertificationDocumentInternal(address,bytes32)", "0x884b5dc2": "fill(uint256[])", "0x88017e05": "setContribution(uint256)", "0x1ff517ff": "totalDebt(address)", "0xd0315658": "getShareDistributionWithTimestamp(bytes)", "0x7d03f5f3": "newGame()", "0xb7538f3e": "ChangeClient(address)", "0xbf4d89b5": "parseInt(string,uint256)", "0x7b55c8b5": "scheduleCall(address,bytes4,bytes,uint8,uint256[4])", "0x350d141e": "getWasApprovedBeforeDeadline()", "0x27960c5f": "validateEndowment(uint256,uint256,uint256,uint256,uint256,uint256,uint256)", "0xb774d3d7": "BankOwner_GetDonationsBalance()", "0x267b6922": "entries(bytes32)", "0x08b7c13b": "getExists(bytes20)", "0x7e7a2fbf": "contribute_toTheGame()", "0x5b86914d": "bet_value()", "0x0e1087c3": "getMarketMakerFunds()", "0xf7149220": "RNG()", "0x345006b6": "getGenerationForCall(address)", "0xc4b14e0b": "getSignature(bytes32)", "0x419945f8": "ExpiringMarket(uint256)", "0x41868769": "CallAborted(address,bytes)", "0x29092d0e": "remove(address)", "0x746c9171": "m_required()", "0x5020dcf4": "convertToEach(uint256,string,uint256)", "0xa06db7dc": "gracePeriod()", "0xbf8fc670": "sendToAggregation(uint256)", "0xf14fcbc8": "commit(bytes32)", "0xa538d287": "getMinMax()", "0xcae523c1": "testOwnedTryAuthUnauthorized()", "0x04d10f1c": "isValidChainyJson(string)", "0x9ba5b4e9": "getEventHashes(bytes32[])", "0xfedfd535": "Config()", "0x42ce0f30": "testThrowUpdateLatestRevisionNotOwner()", "0x31be6985": "testBitXorSuccess()", "0x173cb7de": "getNumReleasesForNameHash(bytes32)", "0xd90a88cd": "getContentReplies(uint256,uint256)", "0x92eefe9b": "setController(address)", "0x052b81c7": "releaseBadges()", "0xb2855b4f": "setFeeAddr(address)", "0x19a9c2f1": "generateId(string)", "0xfa9acb05": "addressInArray(address,address)", "0x3da5c3ce": "puzzle(address,bytes32)", "0x7a427d98": "forceReturn()", "0x70e71ea3": "etherandomSeedWithGasLimit(uint256)", "0xd7a58658": "changeHouseedge(uint8)", "0x72b75585": "getOriginalClient()", "0xf802075f": "requiredEndowment()", "0x7997b997": "doMelt(uint256,uint256)", "0x6d5433e6": "max(uint256,uint256)", "0xb651cbaf": "add_level(address,bytes)", "0xb4d6d4c7": "getPackageData(bytes32)", "0x90e3c278": "getShares(uint256[128])", "0x179b73da": "killBoardProposal(uint256,address)", "0xc944a38e": "CharlyLifeLog(string,int256)", "0xe1c66292": "Create(uint32,address)", "0x69c8b344": "ownedToken(address)", "0xabcf1328": "InterestBank()", "0x532e7e6a": "calcEarningsSelling(bytes,uint256,uint256[],uint8,uint256)", "0x43d24a5e": "addUpdater(address)", "0xd1feca67": "addSpendingRequest(address)", "0x2d34ba79": "setup(address,address)", "0xcb14d93b": "getHash(bytes,address,uint256)", "0x309424fe": "get_all_names()", "0x96c52fc3": "____forward(address,uint256,uint256,bytes)", "0xde39acea": "get32(bytes,uint256)", "0xf3dd3d8a": "newCurrency(string,string,uint8)", "0x2432eb23": "testThrowRetractLatestRevisionNotUpdatable()", "0x7fcf3a2f": "throwFooBar()", "0xabe9f569": "oraclize_getPrice(string,uint256)", "0x41ee903e": "clear(uint256,uint256)", "0xd249a52e": "update(bytes,uint256[],uint256[])", "0xc3d014d6": "setContent(bytes32,bytes32)", "0x3ac5cb73": "GeometricPonzi()", "0x4a1aa767": "claim_victory(uint256,uint8,uint8,uint8)", "0xce592586": "setThresold(uint256,uint256)", "0x63deb2c5": "changeMemberAddress(address)", "0x2e6e504a": "trusteeWithdraw()", "0xcfed9199": "timePassed(uint256)", "0xb782fc9b": "getFirstActiveDuel2()", "0x35b28153": "addAuthorization(address)", "0x46f7a883": "BuyTicket(uint8,uint8,uint8)", "0x83c51a38": "thesimplegame()", "0xfa28ba0d": "validateReleaseLockfileURI(string)", "0xa7b2d4cb": "remove(int256,address)", "0x010731c0": "sendCryptedHand(bytes32)", "0xe9e99d81": "getChannelFeed(address,uint256,uint256,uint256)", "0x4e30a66c": "safeToAdd(uint256,uint256)", "0x2c4e591b": "totalGames()", "0xa3221c8e": "step8()", "0x783ce458": "expmod(uint256,uint256,uint256)", "0xe417291b": "undelegateDAOTokens(uint256)", "0x8e5d97a2": "releasePendingTransfer(uint256)", "0xbc5ff5e1": "oraclize_query(string,string[4],uint256)", "0x38f77d69": "getDistributeProfitsInfo()", "0xbb510a77": "createChannel(address,uint256)", "0x650955d4": "HashToken()", "0xa8484938": "doApprove(address,uint256)", "0x64ed31fe": "authVotes(address)", "0xf7ae9421": "checkInvestorBalance(address)", "0xba904eed": "removeRegistrar(address)", "0xdce4a447": "at(address)", "0xdb4cacec": "Other()", "0x3647b87a": "buildFactory()", "0xa51aea2d": "changeMaxMultiplier(uint256)", "0x4974bc27": "download()", "0xf8a8fd6d": "test()", "0xd8c90762": "addTrustedIssuer(address,string)", "0xdf6c13c3": "getMinFunding()", "0x867904b4": "issue(address,uint256)", "0x1531c267": "fipsRegisterMulti(uint256,address,bytes)", "0x40a49a96": "searchSmallestInvestor()", "0x61bffe01": "addIdentities(bytes32[],bytes32[])", "0xf77a0923": "BitcoinProcessor(address)", "0xd02528e6": "GetGameIndexesToProcess()", "0x9f927be7": "getNextCall(uint256)", "0xd8162db7": "lockedUntilBlock()", "0x36dfe260": "payOneTimeReward()", "0xc5b1a53c": "deposit(bytes16[],uint64)", "0xc2b6b58c": "isClosed()", "0xc88cc6ac": "getCertification(address)", "0x77ac3da5": "oraclize_query(uint256,string,string[1],uint256)", "0x70ab8ba8": "creditUpdate()", "0xd3ea3322": "testBuildTokenSystemCost()", "0x72388610": "paybackAll()", "0xca6d56dc": "addMember(address)", "0x0994a0a0": "DSTokenTest()", "0xe53e04a5": "refillGas()", "0xc1d5e84f": "addNewUser(address)", "0x89ed0b30": "setOraclizeGas(uint32)", "0x02ba8742": "sendCoins(address,uint256)", "0xb0de1cb7": "publish(uint64,bytes,uint64)", "0x0e13b9af": "getValue(uint8,uint8)", "0xb3dfcdc3": "Contribution(uint256)", "0xa9b35240": "packageExists(bytes32)", "0xd1d3bb92": "testSetPkg()", "0x97297467": "checkAndVerify(bytes)", "0xe31bfa00": "next_id()", "0x9948e493": "calcMarketFee(bytes,uint256)", "0xd148288f": "setHoldingPeriod(uint256)", "0xc032dc30": "execute(uint256,address)", "0xdad99989": "burnCoins(address)", 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"airaTransfer(address,address,uint256)", "0x5a5383ac": "canExitPool()", "0xcabd27de": "Motion(address)", "0x433d4aab": "resolve(uint8,uint8)", "0x7d89ae63": "__findRef(string)", "0x4e1053cc": "RobinHoodPonzi()", "0x0220a5b4": "terminate(string)", "0x419ffa03": "fipsRegister(address)", "0x77a7e6be": "getRefTotal(uint256)", "0xed64bea4": "JamCoin()", "0x3cf885c4": "isBitSet(uint256,uint8)", "0xf2da67db": "setMany(uint256,int256,uint256,bytes20,address,bytes)", "0xe26c8434": "AdminStartDraw(string,bytes)", "0x13df7091": "mintAll(int256)", "0x8a46bf6d": "testFallback()", "0x29bed3bf": "EthereumRoulette()", "0xf869b11a": "declareVictor(uint256,uint256)", "0x45c41478": "getMarkets(bytes,address)", "0x90cf581c": "voteYes()", "0x9ec35352": "returnRandom()", "0x5025b9ae": "expire(uint256,uint256,uint8,bytes,bytes,bytes)", "0x338a1379": "_setPackedBlockNumber(bytes20,uint256)", "0xdb641ab4": "Game_balance_in_Ethers()", "0xbc0e7adb": "testThrowsDisownNotOwner()", "0x302d350e": 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"0x3b9901cc": "getChannelsByRanks(address,uint256,uint256)", "0x83876bc9": "newProposalInWei(address,uint256,string,bytes)", "0x50a3bd39": "enterPool()", "0xc976bbbb": "_compare(int256,bytes2,int256)", "0x0e47c76f": "rotate(uint64,uint256)", "0x6f85c7e4": "WAITING_PERIOD()", "0x7075b1d8": "latestMonarchInternal()", "0x9209b3c0": "getCrtDetails(bytes)", "0x305075db": "NormalizeRanks()", "0xb6b55f25": "deposit(uint256)", "0xf09ea2a6": "offer(uint256,address,uint256,address)", "0xf1320af2": "exempt(address)", "0xc813c30e": "testThrowSomething()", "0x4faa2d54": "getTimeElapsed()", "0x22017c5f": "DSTokenBase(uint256)", "0x6637b882": "setDao(address)", "0xd0b52156": "getIpfsHash(address,address)", "0x13bd4e2c": "_prepareAndSendReward()", "0xdb7ca38a": "XaurmProxyContract()", "0x1bad1d2e": "monitorWallet(address)", "0x691f3431": "name(bytes32)", "0x3169ff3e": "LooneyLottery()", "0x446a7974": "Fokitol()", "0xdc3ab866": "checkEarnings(address)", "0xfad9bf9e": 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"fivetimes()", "0xc028df06": "offer()", "0xacb6c69b": "setTrustedClient(address)", "0xac7ffae3": "updt(uint256,string,uint256,uint256,string,string,address)", "0x0e5ffb3c": "hashVersion(uint32,uint32,uint32,string,string)", "0x4ac6b2be": "getCheckRecordCreator(bytes)", "0x93dafba2": "getSubpot(uint256)", "0x592685d5": "getWindowStart(address,address)", "0xc24a0f8b": "endDate()", "0x3f9b250a": "getDocument(uint256)", "0xd845a4b3": "request(uint256)", "0xa5bfa9a9": "claimToken(bytes32)", "0x8e3957d9": "RandomNumber()", "0x62fb09b2": "getRefDescr(uint256)", "0x9f35d3b2": "start(string,string,uint256,uint256,uint256,uint256)", "0xea1bf386": "getNextSellerBOTdata(uint256)", "0xe27fe50f": "startAuctions(bytes32[])", "0x031d973e": "closeMarket(bytes32)", "0x754dea40": "setBackendOwner(address)", "0xd83a8d11": "testProposing()", "0xf24a534e": "Oracle()", "0xd08275f1": "WolframAlpha()", "0x932db761": "profitsFromBitnationDebitCard()", "0xd96aee49": "MultipleConstructorTest()", "0x4594d06a": 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"scheduleTransaction(uint256,bytes)", "0x64ef212e": "proxyTransferWithReference(address,uint256,bytes32,string)", "0x97c3ccd8": "ban(address)", "0xdeb6930c": "PriceTicker()", "0x6cc5fdaa": "setBytes32(bytes,bytes)", "0x92c8eb96": "DSFalseFallbackTest()", "0x6534b4e2": "IsPayoutReady__InfoFunction(bytes32)", "0x15e812ad": "getBaseFee()", "0xf5b53e17": "getInt256()", "0x081bf263": "isOOB(uint8,uint8)", "0xd2fb8787": "recordExists(bytes)", "0x86c57fcc": "b32ToBytes(bytes)", "0xe3a199d6": "testThrowCreateNewRevisionNotUpdatable()", "0x57cfeeee": "transfer(address,uint256,bytes32)", "0xb72e717d": "fromAddress(address)", "0x61b20d8c": "retrieveFunds()", "0xf4b103d4": "SimpleStorage(uint256)", "0xe2056c46": "ExtraBalToken()", "0xc3ee6311": "lockAndCall(string)", "0x136af582": "next(bytes,bytes,bytes,bytes,bytes,bytes,bytes)", "0xc5d5997c": "changeSubUser(address,address)", "0xf8018a79": "prepend(address,address)", "0xf6b4dfb4": "contractAddress()", "0x9450b1c8": "addCharityFundation(string,string,string)", "0xd1a8d447": "get_all_bet_values()", "0x66d8c463": "reveal(bytes32,string)", "0xbb963c8a": "transferLibOwnership(bytes,address)", "0xd56b2889": "finish()", "0x9fb25d9e": "LeaderMessage()", "0x6ad50ed4": "investmentEntryInfos()", "0xa4d575ce": "_forward(address,bytes)", "0xa3ec5616": "next(bytes,bytes,bytes,bytes,bytes,bytes,bytes,uint256)", "0x0db73c72": "noevent()", "0xf449619e": "collectPrize(uint256)", "0x1afccfa5": "Proposal(address,address,address,bytes,bool)", "0x4788cabf": "getContractId()", "0x4112987c": "strConcat(string,string,string)", "0x928a00d2": "deleteCoin(uint256)", "0xd9ec0508": "testThrowTransferNotEnabled()", "0x9aaf442c": "applyCensorship(uint256)", "0x49407a44": "claimEther(uint256)", "0x4fcf8210": "eraseRecord(bytes32)", "0x5ed84aa6": "getNymCenterAPIURL()", "0xa3c2c462": "totalReceived()", "0x5938748e": "changeVotingRules(address,address,uint256,uint256,uint256)", "0x6fc9d5e4": "changeCompareTo(uint256)", "0xe2ee9941": "tap(bytes20)", "0x0ff4f160": "oraclize_query(uint256,string,string[1])", "0x43ec3f38": "toSliceB32(bytes32)", "0x3288eb0b": "ChineseCookies()", "0x373c98a2": "authCall(address,bytes32)", "0x6ea056a9": "sweep(address,uint256)", "0x8dc45377": "getDuel1(uint256)", "0xd4625a3a": "equals()", "0x616fca9b": "adopt(address)", "0x32cea83e": "birth(bytes)", "0x002a5cc9": "getTicketHolders(uint256)", "0x31119b4d": "changeDeveloper(address)", "0x69569a51": "setFrontend(address)", "0xb7e24979": "addThing(bytes)", "0x164e68de": "withdrawFees(address)", "0x42bf4431": "orderMatchTest(uint256,uint256,uint256,int256,uint256,uint256,address,address,int256)", "0x5dd672ec": "latestBid()", "0x45fe6e2a": "Scheduler()", "0x55cc4e57": "setIssuer(address)", "0x1df5e755": "Etherandom()", "0x8f70009d": "id_for_address(address,address)", "0x39b50688": "cancelSellOrder()", "0x40953102": "scheduleCall(address,uint256,bytes,uint256,uint256,uint8,uint256)", "0x677913e9": "setAmount(int32)", "0x66671c71": "BaseScheduler(address,address)", "0xfe71aec5": "LittleCactus()", "0x879d46fd": "DAOTrust(address,address,bytes,uint256,uint256,uint128)", "0x3b143184": "Congress(uint256,uint256,int256,address)", "0x7370a38d": "getNumPackages()", "0xfee35ff8": "newInvest(uint256,address,uint256)", "0x57dc9760": "DaoChallenge()", "0x8ac78c80": "Docsign()", "0x76d66f5d": "_Transfer(address,address,bytes32)", "0x9dc2c8f5": "fireEventLog4Anonym()", "0x43114842": "acceptChallenge(uint256,uint256,uint256)", "0x2043285d": "getMarketMakers()", "0xfb32f4f5": "ARK_FLAGGER_1_00()", "0x69431ab6": "TokenCreation(uint256,uint256,address,string,string,uint8)", "0x045c6ce0": "voteForProposal(uint256)", "0xa140e79c": "setMinimumDebatePeriod(uint256)", "0x331a72d1": "getRetractable(bytes32)", "0x87cc1e1c": "setExporterBank()", "0x7183616c": "notarize(string)", "0xce79add1": "givableBalanceOf(address)", "0x6f0cfab6": "DNSResolver()", "0x1c2f38ff": "paid(uint64)", "0xb7de47d3": "getIndex(uint256,uint256)", "0x04a2b2c2": "testOwnerCanBreach()", "0x65a4dfb3": "oraclize_query(uint256,string,string,string,uint256)", "0xf2ddc772": "confirm(bytes)", "0xa00ce377": "getIsContractValid()", "0xfe9fbb80": "isAuthorized(address)", "0xbbd39ac0": "coinBalanceOf(address)", "0xa4fde8bc": "player_declare_taking_too_long()", "0xd052fbf6": "getHistory(string,uint256)", "0xd205ad7d": "proposeDissolve(bytes)", "0x5a3b7e42": "standard()", "0xf27197ab": "getIsAvailable()", "0x00a94b6e": "oraclize_query(uint256,string,string[5],uint256)", "0x971c803f": "getMinimumStackCheck()", "0x5168afa4": "getPackageHash(bytes,uint8,uint8,uint8)", "0xaef99eef": "Game()", "0x7f924c4e": "testDeposit()", "0xb1adc241": "BalanceDB()", "0x6a704d7b": "AddedToGeneration(address,uint256)", "0xb9f37c86": "Registrar()", "0xc631b292": "closeVoting()", "0x19350aea": "nameFor(address)", "0x85dee34c": "query2_withGasLimit(uint256,string,string,string,uint256)", "0xbf187478": "shift_left(uint64,uint256)", "0x5b6b431d": "Withdraw(uint256)", "0xe5dd90a5": "HumanStandardToken(uint256,string,uint8,string)", "0xbf8c50ff": "scheduleTransaction()", "0x013d64bd": "setCanCall(address,address,string,bool)", "0xb870ecbb": "testNormalWhitelistAdd()", "0xbcd3d8ca": "Collector(address,address,uint256)", "0x4401ff5c": "sellShares(bytes,uint8,uint256,uint256)", "0x3e0dfbdf": "getInvestorByAddress(address)", "0xcb3e64fd": "unhalt()", "0xafc24e3d": "getChallengeAnswer(uint256)", "0xa36c8ec2": "UpdateContractorAddress(address)", "0xd5a4a3c6": "findRecentBet(address)", "0xb028ee13": "s2b(string)", "0x692ad3a9": "round(uint256,uint256,uint256,uint256)", "0x0a7493b4": "Etheropt(uint256,string,uint256,uint256,bytes,address,int256[])", "0x60689557": "Rock()", "0x717fedf0": "getFirstActiveDuel1()", "0xe837ab59": "getParticipantByAddress(address)", "0x32d5fe98": "revealCampaign(uint256,uint256)", "0x0178b8bf": "resolver(bytes32)", "0x44faa139": "Withdraw(uint32)", "0x418cf199": "setEstimateCost(uint256,uint256)", "0xae45850b": 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"getRefName(uint256)", "0x27121069": "verify(bytes,uint8,bytes,bytes)", "0xb7009613": "canCall(address,address,bytes4)", "0x0295d71b": "currentDepositLimit()", "0x35ee2783": "Alarm()", "0x71b6663e": "play1(address,uint256)", "0x0178fe3f": "getData(uint256)", "0x489306eb": "oraclize_query(string,string)", "0xfce59d0c": "MangoRepo()", "0x8efc777f": "isBeta(bytes)", "0x1f7b8622": "getVotingDeadline()", "0x76da5667": "admin_kill()", "0x152cf9db": "getDataPoint(int256,uint256,uint256)", "0xd09de08a": "increment()", "0x64ee49fe": "scheduleCall(address,uint256,bytes4,uint256,uint256,uint8)", "0xd9fe60f3": "DTHPool(address,address,uint256,string,string,string)", "0x6b4dd158": "getPrice(bytes)", "0x0a80ef45": "getIsClosed()", "0x51fdaf92": "checkExpiredfunds()", "0x694e0d5b": "StringPasser(uint8[])", "0x0e1d88fc": "addTender(uint256,uint256,address,uint256)", "0x53850db3": "getParticipantById(uint256)", "0xb6cb405b": "getContractor()", "0x4c6b25b1": "results(bytes32)", "0x1c4e6cd0": "NameReg()", "0x53aab434": "buyIn()", "0x1ebe5c0f": "sendWithAllOurGasExcept(address,uint256,uint256)", "0xd98b9bb5": "placeBid(address,uint256)", "0x02e8d8c0": "scheduleTransaction(address,uint256,uint256)", "0x8a120dc9": "testBitEqualFailIndexOOB()", "0x33f707d1": "ownerWithdraw(uint256)", "0x98e00e54": "getCallWindowSize()", "0x4da74ee6": "setVoteIntention(uint256,bool,bool,string)", "0x6617e11a": "NiceGuyTax()", "0xfe13a823": "computeResponseFirstHalf(uint16)", "0xf7bd2361": "LookAtBalance()", "0xb09bc3bf": "try_to_get()", "0x0cee22e9": "testSetBalanceSetsSupply()", "0xae404996": "oraclize_query(string,string[3],uint256)", "0x2ad95786": "winner(address)", "0xe5fe4f31": "buy(uint8,bytes32,bytes32)", "0xe23941bc": "testDepositWithdraw()", "0xfc89aff6": "submitVerifiedUsers(address[])", "0xddf187b0": "dogFight()", "0xb5f5962a": "CALL_GAS_CEILING(uint256)", "0x92093dd6": "getLastResult()", "0xbfad16f4": "new_offer(uint256,uint256)", "0x01df7f30": 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"0x7bc49a95": "play(uint256,uint256)", "0x5329c681": "checkTimeout(uint256)", "0x7c05caf3": "testCreateCostAuth()", "0x8606f905": "balanceOf(address,bytes)", "0xbe45fd62": "transfer(address,uint256,bytes)", "0xd7130651": "getCity(uint256)", "0xb2353d69": "updateRightLottery(address)", "0x01bb85a4": "__startBlock(string)", "0x4316abbb": "newJester(address)", "0x5c3e426c": "adminRetrieveDonations(address)", "0x293ffca3": "AddressReg()", "0x4156fdb7": "createSwap(uint256)", "0x2852b71c": "accept()", "0x027a5e3f": "getLastVersion(bytes)", "0x3d90d44d": "addPowerSource(address,uint256,uint256)", "0x1ab06ee5": "set(uint256,uint256)", "0x50f07cf9": "setReadingDelay(uint256)", "0x669e48aa": "get(uint256,uint256)", "0xdea9c72b": "getLatestPreReleaseTree(bytes32,uint32,uint32,uint32)", "0x60f66701": "useCoupon(string)", "0x2431f164": "process_payment()", "0x17623e5b": "unauthorizeManager(address)", "0x367bbd78": "strlen(string)", "0xbab86ea8": "test(string,string)", "0x25f3da52": 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"0x744d8b4f": "recordWin(uint256,uint256)", "0xad1ef61e": "donkeyInvested(address)", "0xb4787dc5": "linkEID(bytes,bytes)", "0x7b1cbb13": "getChannelValue(bytes)", "0xd0febe4c": "buyTokens()", "0x74f519db": "setLastTimestamp(uint256,uint256)", "0xe30081a0": "setAddress(address)", "0x6fd902e1": "getCurrentBlockNumber()", "0x25d8dcf2": "betAndFlip()", "0xc062f578": "updateStage()", "0xe0cfc05c": "testThrowsRetractLatestRevisionDoesntHaveAdditionalRevisions()", "0x854f4817": "buyKissBTCWithCallback(address,uint256)", "0x58b1f29c": "refundBounty(uint256)", "0x0645b5d5": "getMyShareholderID()", "0xe9c63b9c": "requestPeerBalance()", "0x1b03316f": "getSecond()", "0xbcc6092a": "MyEtherBank()", "0x1cf43b63": "extractExportFeeChargeLength()", "0x5e58f141": "shares(address,bytes,int256)", "0x6103d70b": "withdrawPayments()", "0x3e0663e0": "AdminDrawProcess()", "0xa0f029fc": "ContractorInterface(address,address,address)", "0xe604cf9f": "get_all_squares()", "0xd13d1ace": 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"0x08f235ec": "getDefaultPayment()", "0x1dd4914b": "withdrawEtherOrThrow(uint256)", "0x7ca31724": "tokenId(address)", "0x0c4f65bd": "getOwnerAddress()", "0xeec3cb41": "placeBet(bool[],uint256,uint256)", "0x9054bdec": "toTimestamp(uint16,uint8,uint8,uint8,uint8,uint8)", "0x468f02d2": "getUnderlyingPrice()", "0x74331be7": "sete(address)", "0xb05e390a": "TokenEther(string,string)", "0x89cc5ea8": "bid(string,address,uint256)", "0xa8893a6e": "getNumOfSalesWithSameId(bytes16)", "0x3defb962": "heartbeat()", "0x15a03930": "TossMyCoin()", "0x1d8ae626": "Security(string,string)", "0xf1bca7a4": "doCall(uint256)", "0xae6215d8": "getBlockHeight(bytes)", "0x8124bb0f": "continueExecution()", "0xc1cbbca7": "contribute(uint256)", "0xa48566ba": "serverSeed(address,bytes)", "0xc0f5a9cb": "deleteThing(bytes32[])", "0x4136aa35": "isAlive()", "0x6fe665e9": "SlotMachine()", "0xfaff50a8": "rootNode()", "0xaf769eff": "Paper()", "0x77863b61": "CrossWhitehatWithdraw(uint256,address)", "0x2bed55b0": "buildDSEasyMultisig(uint256,uint256,uint256)", "0xd2ef7398": "challenge()", "0x96e4ee3d": "convert(uint256,uint256)", "0x2dff6941": "content(bytes32)", "0x4d536f9f": "validateNameExt(bytes)", "0xd4d5d32a": "collectFee()", "0x6620a935": "sendToOwner()", "0x5084da18": "fipsOwner(bytes20)", "0xe419f189": "multiAccessIsOwner(address)", "0xa9fbc614": "lookupTicketHolder(uint256)", "0x11f72496": "testT()", "0x7365870b": "bet(uint256)", "0x09861b81": "flooredSub(uint256,uint256)", "0xe28fed1e": "userRescues(address)", "0x28cc413a": "getProof(uint256,uint256,uint256)", "0x9a8f09bd": "newKing(address)", "0x5d068051": "sendFees(address)", "0x49cbe338": "tryRead(uint64)", "0x691bfc89": "goods(uint16,uint256)", "0xfc36e15b": "vote(string)", "0x48107843": "getNextCallSibling(address)", "0x6461fe39": "transferFromWithReference(address,address,uint256,string)", "0x804e11dc": "testThrowsDisownNotTransferable()", "0x76f30ca1": "toContentID(address,uint256,string,bytes)", "0xa77b2e37": "Coin()", "0x3f2f1596": "setupTreasury(address,uint256)", "0x3de9e4c6": "__transferFromWithReference(address,address,uint256,string)", "0x612e45a3": "newProposal(address,uint256,string,bytes,uint256,bool)", "0x4cdb48e4": "isValidNym(address)", "0x5afa5036": "isCertified(address)", "0x9a1b420b": "OraclizeAddrResolver()", "0xec5c9036": "Crowdsale(address,uint256,uint256)", "0x01095962": "oraclize_setCustomGasPrice(uint256)", "0xe7e2aa0e": "buyer_cancel()", "0x2da8f764": "submitVideo(string,string)", "0x3395dc70": "acceptTransfer(address,address,uint256)", "0xdf143fb7": "HackerGold(address)", "0x63334c58": "transferETC(address)", "0x6a5da6e5": "followCampaign(uint256)", "0x49fb2dc5": "add_to_association(uint256,uint256,uint256)", "0x953aa435": "GetPrice(uint8)", "0xc1257bad": "testPassingAProposal()", "0x3bc5de30": "getData()", "0x4abb9d39": "depletable()", "0x129484b6": "changeFeeRecipient(int256,int256,int256,int256,int256,int256)", "0x902e64e5": "Oath()", "0x8c4dd5cd": "Democracy()", "0xbea124a6": "query(bytes,bytes,int256)", "0x69347990": "ownerWithdrawl()", "0x606deecd": "requestData()", "0x6720ceb1": "sendPayment()", "0xb1050da5": "newProposal(address,uint256,string,bytes)", "0xfeaa29d8": "insertProfitHere()", "0x36f9f49c": "etherandomSeed()", "0xae815843": "query(uint256,string,string,uint256)", "0x752d349c": "depthCheck(int256,int256)", "0xa24835d1": "destroy(address,uint256)", "0x26070774": "Token(address)", "0x6e0d98fe": "setProbabilities(uint32[])", "0x0761a004": "step(uint256,bytes)", "0xad82dcac": "testBlockhashCorrectFee()", "0x0900f010": "upgrade(address)", "0xa288fb1f": "setConfigUint(int256,bytes,uint256)", "0xe88b8ac6": "confirmAndCheck(bytes)", "0xf1a00a53": "unregisterListening(address)", "0xb17acdcd": "collectFees(uint256)", "0xb5d0f16e": "getGasScalar(uint256,uint256)", "0xae999ece": "reserve(string)", "0x95ceb4b3": "winningProtocal()", "0x1a93fa4b": "reorganizeSubUsers()", "0x9243e088": "setEnforceRevisions(bytes20)", "0x342454c7": "isDigit(bytes1)", "0x8e2c6f4d": "initiateVerification(address,bytes,bytes)", "0xddb5b3ac": "SellTokens()", "0xd18dfdc9": "parrot(uint256)", "0xd3732642": "FastRealisticPyramid()", "0x37ab8f20": "notifyPlayer(uint256,uint256,uint256,uint256)", "0xfb6e155f": "availableVolume(address,uint256,address,uint256,uint256,uint256,address,uint8,bytes32,bytes32)", "0x50ab6f7f": "getMsgs()", "0x6b6a53fa": "testThrowsRestartNotOwner()", "0x4dc7cc55": "terminateAlt()", "0x8b9726c1": "multiAccessCallD(address,uint256,bytes,address)", "0x5a74dee5": "multiAccessRemoveOwnerD(address,address)", "0xfd339d18": "testAuthorityTryAuthUnauthorized()", "0xd3d6a975": "testThrowsTransferNotEnabled()", "0x8aa001fc": "getSecond(uint256)", "0x2ec2c246": "unregister(address)", "0xbbdb31cb": "challenge(uint256,address,bool)", "0x635cfda2": "Incrementer()", "0x704b6c02": "setAdmin(address)", "0xc1c723f4": "validateProposedMonarchName(bytes)", "0xadf5e565": "verify(bytes,address,uint256,uint8,bytes,bytes)", "0xbe7cddf8": "TwoD()", "0xc71b583b": "closeRequest()", "0x9cbf9e36": "createToken()", "0x69c4113d": "setNewBudget(uint256,uint256,uint256,uint256)", "0xd4649fde": "expire(uint256,uint8,bytes32,bytes32,bytes32)", "0xf9a7a2ef": "named(bytes)", "0xdbf45aa3": "EthBank()", "0xbb3ce7fe": "DepositHolder()", "0xfb5d5729": "getPongvalTransactional()", "0x2f0b15f6": "testGetUnset()", "0x62891b5d": "multiAccessChangeRequirement(uint256)", "0x538e0759": "refill()", "0x24c65f35": "updateRefundGas()", "0x62b24189": "DepositToBankAccountFromDifferentAddress(uint32)", "0xd81f53fd": "EtherId()", "0xcea943ee": "getSaleConfig()", "0x23647398": "testThrowRetractNotOwner()", "0xcdcd77c0": "baz(uint32,bool)", "0xa677fbd9": "example2Func()", "0xa02b9aac": "getPaymentDataByAddress(address)", "0x268eb055": "setDescription(uint64,bytes)", "0x09d2d0b9": "setServiceAccount(address,bool)", "0x5f70d9ac": "getBot(uint256)", "0x63f80de3": "issueCoin(address,uint256,uint256)", "0x8570153e": 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"0xe06174e4": "settings()", "0xfac5bb92": "getPreRelease(bytes32)", "0x93c94acb": "calculateRewards(uint256[3][3])", "0xd7fa1007": "setHash(bytes32,bytes32)", "0x2a714078": "triggerAuth()", "0x4cd995da": "registerCompany(address,string)", "0xf6469342": "_setPackedBlockNumber(bytes32,uint256)", "0x8e7fd292": "trySetSubnodeOwner(bytes32,address)", "0x4f573cb2": "withdrawRevenue()", "0x924c28c1": "ContractInterface(address,address,address)", "0x4fc9c91a": "identityOf(bytes32)", "0x19901f1d": "TokenSale(uint256,uint256)", "0xaf8b7525": "CollectAndReduceFees(uint256)", "0x3ccb7dc9": "CrowdFund(uint256,uint256)", "0xaeeb96af": "Highlander()", "0xa126c5df": "GAS_TO_AUTHORIZE_EXECUTION()", "0x13c89a8f": "getAllowedTime(bytes32)", "0xf38b0600": "fireEventLog3()", "0xc7144269": "changeSettings_only_Dev(uint256,uint256,uint256,uint256,uint16,uint256,uint256,uint256,uint8,uint8)", "0xefc81a8c": "create()", "0x7429c086": "repeat()", "0x9c0a4bbc": "AlwaysFail()", "0xc3d23e10": "checkBet()", 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a/cmd/clef/README.md b/cmd/clef/README.md new file mode 100644 index 0000000000..93799a7610 --- /dev/null +++ b/cmd/clef/README.md @@ -0,0 +1,864 @@ +Clef +---- +Clef can be used to sign transactions and data and is meant as a replacement for geth's account management. +This allows DApps not to depend on geth's account management. When a DApp wants to sign data it can send the data to +the signer, the signer will then provide the user with context and asks the user for permission to sign the data. If +the users grants the signing request the signer will send the signature back to the DApp. + +This setup allows a DApp to connect to a remote Ethereum node and send transactions that are locally signed. This can +help in situations when a DApp is connected to a remote node because a local Ethereum node is not available, not +synchronised with the chain or a particular Ethereum node that has no built-in (or limited) account management. + +Clef can run as a daemon on the same machine, or off a usb-stick like [usb armory](https://inversepath.com/usbarmory), +or a separate VM in a [QubesOS](https://www.qubes-os.org/) type os setup. + + +## Command line flags +Clef accepts the following command line options: +``` +COMMANDS: + init Initialize the signer, generate secret storage + attest Attest that a js-file is to be used + addpw Store a credential for a keystore file + help Shows a list of commands or help for one command + +GLOBAL OPTIONS: + --loglevel value log level to emit to the screen (default: 4) + --keystore value Directory for the keystore (default: "$HOME/.ethereum/keystore") + --configdir value Directory for clef configuration (default: "$HOME/.clef") + --networkid value Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten, 4=Rinkeby) (default: 1) + --lightkdf Reduce key-derivation RAM & CPU usage at some expense of KDF strength + --nousb Disables monitoring for and managing USB hardware wallets + --rpcaddr value HTTP-RPC server listening interface (default: "localhost") + --rpcport value HTTP-RPC server listening port (default: 8550) + --signersecret value A file containing the password used to encrypt signer credentials, e.g. keystore credentials and ruleset hash + --4bytedb value File containing 4byte-identifiers (default: "./4byte.json") + --4bytedb-custom value File used for writing new 4byte-identifiers submitted via API (default: "./4byte-custom.json") + --auditlog value File used to emit audit logs. Set to "" to disable (default: "audit.log") + --rules value Enable rule-engine (default: "rules.json") + --stdio-ui Use STDIN/STDOUT as a channel for an external UI. This means that an STDIN/STDOUT is used for RPC-communication with a e.g. a graphical user interface, and can be used when the signer is started by an external process. + --stdio-ui-test Mechanism to test interface between signer and UI. Requires 'stdio-ui'. + --help, -h show help + --version, -v print the version + +``` + + +Example: +``` +signer -keystore /my/keystore -chainid 4 +``` + +Check out the [tutorial](tutorial.md) for some concrete examples on how the signer works. + +## Security model + +The security model of the signer is as follows: + +* One critical component (the signer binary / daemon) is responsible for handling cryptographic operations: signing, private keys, encryption/decryption of keystore files. +* The signer binary has a well-defined 'external' API. +* The 'external' API is considered UNTRUSTED. +* The signer binary also communicates with whatever process that invoked the binary, via stdin/stdout. + * This channel is considered 'trusted'. Over this channel, approvals and passwords are communicated. + +The general flow for signing a transaction using e.g. geth is as follows: +![image](sign_flow.png) + +In this case, `geth` would be started with `--externalsigner=http://localhost:8550` and would relay requests to `eth.sendTransaction`. + +## TODOs + +Some snags and todos + +* [ ] The signer should take a startup param "--no-change", for UIs that do not contain the capability + to perform changes to things, only approve/deny. Such a UI should be able to start the signer in + a more secure mode by telling it that it only wants approve/deny capabilities. + +* [x] It would be nice if the signer could collect new 4byte-id:s/method selectors, and have a +secondary database for those (`4byte_custom.json`). Users could then (optionally) submit their collections for +inclusion upstream. + +* It should be possible to configure the signer to check if an account is indeed known to it, before +passing on to the UI. The reason it currently does not, is that it would make it possible to enumerate +accounts if it immediately returned "unknown account". +* [x] It should be possible to configure the signer to auto-allow listing (certain) accounts, instead of asking every time. +* [x] Done Upon startup, the signer should spit out some info to the caller (particularly important when executed in `stdio-ui`-mode), +invoking methods with the following info: + * [x] Version info about the signer + * [x] Address of API (http/ipc) + * [ ] List of known accounts +* [ ] Have a default timeout on signing operations, so that if the user has not answered withing e.g. 60 seconds, the request is rejected. +* [ ] `account_signRawTransaction` +* [ ] `account_bulkSignTransactions([] transactions)` should + * only exist if enabled via config/flag + * only allow non-data-sending transactions + * all txs must use the same `from`-account + * let the user confirm, showing + * the total amount + * the number of unique recipients + +* Geth todos + - The signer should pass the `Origin` header as call-info to the UI. As of right now, the way that info about the request is +put together is a bit of a hack into the http server. This could probably be greatly improved + - Relay: Geth should be started in `geth --external_signer localhost:8550`. + - Currently, the Geth APIs use `common.Address` in the arguments to transaction submission (e.g `to` field). This + type is 20 `bytes`, and is incapable of carrying checksum information. The signer uses `common.MixedcaseAddress`, which + retains the original input. + - The Geth api should switch to use the same type, and relay `to`-account verbatim to the external api. + +* [x] Storage + * [x] An encrypted key-value storage should be implemented + * See [rules.md](rules.md) for more info about this. + +* Another potential thing to introduce is pairing. + * To prevent spurious requests which users just accept, implement a way to "pair" the caller with the signer (external API). + * Thus geth/mist/cpp would cryptographically handshake and afterwards the caller would be allowed to make signing requests. + * This feature would make the addition of rules less dangerous. + +* Wallets / accounts. Add API methods for wallets. + +## Communication + +### External API + +The signer listens to HTTP requests on `rpcaddr`:`rpcport`, with the same JSONRPC standard as Geth. The messages are +expected to be JSON [jsonrpc 2.0 standard](http://www.jsonrpc.org/specification). + +Some of these call can require user interaction. Clients must be aware that responses +may be delayed significanlty or may never be received if a users decides to ignore the confirmation request. + +The External API is **untrusted** : it does not accept credentials over this api, nor does it expect +that requests have any authority. + +### UI API + +The signer has one native console-based UI, for operation without any standalone tools. +However, there is also an API to communicate with an external UI. To enable that UI, +the signer needs to be executed with the `--stdio-ui` option, which allocates the +`stdin`/`stdout` for the UI-api. + +An example (insecure) proof-of-concept of has been implemented in `pythonsigner.py`. + +The model is as follows: + +* The user starts the UI app (`pythonsigner.py`). +* The UI app starts the `signer` with `--stdio-ui`, and listens to the +process output for confirmation-requests. +* The `signer` opens the external http api. +* When the `signer` receives requests, it sends a `jsonrpc` request via `stdout`. +* The UI app prompts the user accordingly, and responds to the `signer` +* The `signer` signs (or not), and responds to the original request. + +## External API + +See the [external api changelog](extapi_changelog.md) for information about changes to this API. + +### Encoding +- number: positive integers that are hex encoded +- data: hex encoded data +- string: ASCII string + +All hex encoded values must be prefixed with `0x`. + +## Methods + +### account_new + +#### Create new password protected account + +The signer will generate a new private key, encrypts it according to [web3 keystore spec](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) and stores it in the keystore directory. +The client is responsible for creating a backup of the keystore. If the keystore is lost there is no method of retrieving lost accounts. + +#### Arguments + +None + +#### Result + - address [string]: account address that is derived from the generated key + - url [string]: location of the keyfile + +#### Sample call +```json +{ + "id": 0, + "jsonrpc": "2.0", + "method": "account_new", + "params": [] +} + +{ + "id": 0, + "jsonrpc": "2.0", + "result": { + "address": "0xbea9183f8f4f03d427f6bcea17388bdff1cab133", + "url": "keystore:///my/keystore/UTC--2017-08-24T08-40-15.419655028Z--bea9183f8f4f03d427f6bcea17388bdff1cab133" + } +} +``` + +### account_list + +#### List available accounts + List all accounts that this signer currently manages + +#### Arguments + +None + +#### Result + - array with account records: + - account.address [string]: account address that is derived from the generated key + - account.type [string]: type of the + - account.url [string]: location of the account + +#### Sample call +```json +{ + "id": 1, + "jsonrpc": "2.0", + "method": "account_list" +} + +{ + "id": 1, + "jsonrpc": "2.0", + "result": [ + { + "address": "0xafb2f771f58513609765698f65d3f2f0224a956f", + "type": "account", + "url": "keystore:///tmp/keystore/UTC--2017-08-24T07-26-47.162109726Z--afb2f771f58513609765698f65d3f2f0224a956f" + }, + { + "address": "0xbea9183f8f4f03d427f6bcea17388bdff1cab133", + "type": "account", + "url": "keystore:///tmp/keystore/UTC--2017-08-24T08-40-15.419655028Z--bea9183f8f4f03d427f6bcea17388bdff1cab133" + } + ] +} +``` + +### account_signTransaction + +#### Sign transactions + Signs a transactions and responds with the signed transaction in RLP encoded form. + +#### Arguments + 2. transaction object: + - `from` [address]: account to send the transaction from + - `to` [address]: receiver account. If omitted or `0x`, will cause contract creation. + - `gas` [number]: maximum amount of gas to burn + - `gasPrice` [number]: gas price + - `value` [number:optional]: amount of Wei to send with the transaction + - `data` [data:optional]: input data + - `nonce` [number]: account nonce + 3. method signature [string:optional] + - The method signature, if present, is to aid decoding the calldata. Should consist of `methodname(paramtype,...)`, e.g. `transfer(uint256,address)`. The signer may use this data to parse the supplied calldata, and show the user. The data, however, is considered totally untrusted, and reliability is not expected. + + +#### Result + - signed transaction in RLP encoded form [data] + +#### Sample call +```json +{ + "id": 2, + "jsonrpc": "2.0", + "method": "account_signTransaction", + "params": [ + { + "from": "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db", + "gas": "0x55555", + "gasPrice": "0x1234", + "input": "0xabcd", + "nonce": "0x0", + "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "value": "0x1234" + } + ] +} +``` +Response + +```json +{ + "jsonrpc": "2.0", + "id": 67, + "error": { + "code": -32000, + "message": "Request denied" + } +} +``` +#### Sample call with ABI-data + + +```json +{ + "jsonrpc": "2.0", + "method": "account_signTransaction", + "params": [ + { + "from": "0x694267f14675d7e1b9494fd8d72fefe1755710fa", + "gas": "0x333", + "gasPrice": "0x1", + "nonce": "0x0", + "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "value": "0x0", + "data": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012" + }, + "safeSend(address)" + ], + "id": 67 +} +``` +Response + +```json +{ + "jsonrpc": "2.0", + "id": 67, + "result": { + "raw": "0xf88380018203339407a565b7ed7d7a678680a4c162885bedbb695fe080a44401a6e4000000000000000000000000000000000000000000000000000000000000001226a0223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20ea02aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663", + "tx": { + "nonce": "0x0", + "gasPrice": "0x1", + "gas": "0x333", + "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "value": "0x0", + "input": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012", + "v": "0x26", + "r": "0x223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20e", + "s": "0x2aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663", + "hash": "0xeba2df809e7a612a0a0d444ccfa5c839624bdc00dd29e3340d46df3870f8a30e" + } + } +} +``` + +Bash example: +```bash +#curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ + +{"jsonrpc":"2.0","id":67,"result":{"raw":"0xf88380018203339407a565b7ed7d7a678680a4c162885bedbb695fe080a44401a6e4000000000000000000000000000000000000000000000000000000000000001226a0223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20ea02aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663","tx":{"nonce":"0x0","gasPrice":"0x1","gas":"0x333","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0","value":"0x0","input":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012","v":"0x26","r":"0x223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20e","s":"0x2aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663","hash":"0xeba2df809e7a612a0a0d444ccfa5c839624bdc00dd29e3340d46df3870f8a30e"}}} +``` + + +### account_sign + +#### Sign data + Signs a chunk of data and returns the calculated signature. + +#### Arguments + - account [address]: account to sign with + - data [data]: data to sign + +#### Result + - calculated signature [data] + +#### Sample call +```json +{ + "id": 3, + "jsonrpc": "2.0", + "method": "account_sign", + "params": [ + "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db", + "0xaabbccdd" + ] +} +``` +Response + +```json +{ + "id": 3, + "jsonrpc": "2.0", + "result": "0x5b6693f153b48ec1c706ba4169960386dbaa6903e249cc79a8e6ddc434451d417e1e57327872c7f538beeb323c300afa9999a3d4a5de6caf3be0d5ef832b67ef1c" +} +``` + +### account_ecRecover + +#### Recover address + Derive the address from the account that was used to sign data from the data and signature. + +#### Arguments + - data [data]: data that was signed + - signature [data]: the signature to verify + +#### Result + - derived account [address] + +#### Sample call +```json +{ + "id": 4, + "jsonrpc": "2.0", + "method": "account_ecRecover", + "params": [ + "0xaabbccdd", + "0x5b6693f153b48ec1c706ba4169960386dbaa6903e249cc79a8e6ddc434451d417e1e57327872c7f538beeb323c300afa9999a3d4a5de6caf3be0d5ef832b67ef1c" + ] +} +``` +Response + +```json +{ + "id": 4, + "jsonrpc": "2.0", + "result": "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db" +} + +``` + +### account_import + +#### Import account + Import a private key into the keystore. The imported key is expected to be encrypted according to the web3 keystore + format. + +#### Arguments + - account [object]: key in [web3 keystore format](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) (retrieved with account_export) + +#### Result + - imported key [object]: + - key.address [address]: address of the imported key + - key.type [string]: type of the account + - key.url [string]: key URL + +#### Sample call +```json +{ + "id": 6, + "jsonrpc": "2.0", + "method": "account_import", + "params": [ + { + "address": "c7412fc59930fd90099c917a50e5f11d0934b2f5", + "crypto": { + "cipher": "aes-128-ctr", + "cipherparams": { + "iv": "401c39a7c7af0388491c3d3ecb39f532" + }, + "ciphertext": "eb045260b18dd35cd0e6d99ead52f8fa1e63a6b0af2d52a8de198e59ad783204", + "kdf": "scrypt", + "kdfparams": { + "dklen": 32, + "n": 262144, + "p": 1, + "r": 8, + "salt": "9a657e3618527c9b5580ded60c12092e5038922667b7b76b906496f021bb841a" + }, + "mac": "880dc10bc06e9cec78eb9830aeb1e7a4a26b4c2c19615c94acb632992b952806" + }, + "id": "09bccb61-b8d3-4e93-bf4f-205a8194f0b9", + "version": 3 + }, + ] +} +``` +Response + +```json +{ + "id": 6, + "jsonrpc": "2.0", + "result": { + "address": "0xc7412fc59930fd90099c917a50e5f11d0934b2f5", + "type": "account", + "url": "keystore:///tmp/keystore/UTC--2017-08-24T11-00-42.032024108Z--c7412fc59930fd90099c917a50e5f11d0934b2f5" + } +} +``` + +### account_export + +#### Export account from keystore + Export a private key from the keystore. The exported private key is encrypted with the original passphrase. When the + key is imported later this passphrase is required. + +#### Arguments + - account [address]: export private key that is associated with this account + +#### Result + - exported key, see [web3 keystore format](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) for + more information + +#### Sample call +```json +{ + "id": 5, + "jsonrpc": "2.0", + "method": "account_export", + "params": [ + "0xc7412fc59930fd90099c917a50e5f11d0934b2f5" + ] +} +``` +Response + +```json +{ + "id": 5, + "jsonrpc": "2.0", + "result": { + "address": "c7412fc59930fd90099c917a50e5f11d0934b2f5", + "crypto": { + "cipher": "aes-128-ctr", + "cipherparams": { + "iv": "401c39a7c7af0388491c3d3ecb39f532" + }, + "ciphertext": "eb045260b18dd35cd0e6d99ead52f8fa1e63a6b0af2d52a8de198e59ad783204", + "kdf": "scrypt", + "kdfparams": { + "dklen": 32, + "n": 262144, + "p": 1, + "r": 8, + "salt": "9a657e3618527c9b5580ded60c12092e5038922667b7b76b906496f021bb841a" + }, + "mac": "880dc10bc06e9cec78eb9830aeb1e7a4a26b4c2c19615c94acb632992b952806" + }, + "id": "09bccb61-b8d3-4e93-bf4f-205a8194f0b9", + "version": 3 + } +} +``` + + + +## UI API + +These methods needs to be implemented by a UI listener. + +By starting the signer with the switch `--stdio-ui-test`, the signer will invoke all known methods, and expect the UI to respond with +denials. This can be used during development to ensure that the API is (at least somewhat) correctly implemented. +See `pythonsigner`, which can be invoked via `python3 pythonsigner.py test` to perform the 'denial-handshake-test'. + +All methods in this API uses object-based parameters, so that there can be no mixups of parameters: each piece of data is accessed by key. + +See the [ui api changelog](intapi_changelog.md) for information about changes to this API. + +OBS! A slight deviation from `json` standard is in place: every request and response should be confined to a single line. +Whereas the `json` specification allows for linebreaks, linebreaks __should not__ be used in this communication channel, to make +things simpler for both parties. + +### ApproveTx + +Invoked when there's a transaction for approval. + + +#### Sample call + +Here's a method invocation: +```bash + +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ +``` + +```json + +{ + "jsonrpc": "2.0", + "id": 1, + "method": "ApproveTx", + "params": [ + { + "transaction": { + "from": "0x0x694267f14675d7e1b9494fd8d72fefe1755710fa", + "to": "0x0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "gas": "0x333", + "gasPrice": "0x1", + "value": "0x0", + "nonce": "0x0", + "data": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012", + "input": null + }, + "call_info": [ + { + "type": "WARNING", + "message": "Invalid checksum on to-address" + }, + { + "type": "Info", + "message": "safeSend(address: 0x0000000000000000000000000000000000000012)" + } + ], + "meta": { + "remote": "127.0.0.1:48486", + "local": "localhost:8550", + "scheme": "HTTP/1.1" + } + } + ] +} + +``` + +The same method invocation, but with invalid data: +```bash + +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000002000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ +``` + +```json + +{ + "jsonrpc": "2.0", + "id": 1, + "method": "ApproveTx", + "params": [ + { + "transaction": { + "from": "0x0x694267f14675d7e1b9494fd8d72fefe1755710fa", + "to": "0x0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "gas": "0x333", + "gasPrice": "0x1", + "value": "0x0", + "nonce": "0x0", + "data": "0x4401a6e40000000000000002000000000000000000000000000000000000000000000012", + "input": null + }, + "call_info": [ + { + "type": "WARNING", + "message": "Invalid checksum on to-address" + }, + { + "type": "WARNING", + "message": "Transaction data did not match ABI-interface: WARNING: Supplied data is stuffed with extra data. \nWant 0000000000000002000000000000000000000000000000000000000000000012\nHave 0000000000000000000000000000000000000000000000000000000000000012\nfor method safeSend(address)" + } + ], + "meta": { + "remote": "127.0.0.1:48492", + "local": "localhost:8550", + "scheme": "HTTP/1.1" + } + } + ] +} + + +``` + +One which has missing `to`, but with no `data`: + + +```json + +{ + "jsonrpc": "2.0", + "id": 3, + "method": "ApproveTx", + "params": [ + { + "transaction": { + "from": "", + "to": null, + "gas": "0x0", + "gasPrice": "0x0", + "value": "0x0", + "nonce": "0x0", + "data": null, + "input": null + }, + "call_info": [ + { + "type": "CRITICAL", + "message": "Tx will create contract with empty code!" + } + ], + "meta": { + "remote": "signer binary", + "local": "main", + "scheme": "in-proc" + } + } + ] +} +``` + +### ApproveExport + +Invoked when a request to export an account has been made. + +#### Sample call + +```json + +{ + "jsonrpc": "2.0", + "id": 7, + "method": "ApproveExport", + "params": [ + { + "address": "0x0000000000000000000000000000000000000000", + "meta": { + "remote": "signer binary", + "local": "main", + "scheme": "in-proc" + } + } + ] +} + +``` + +### ApproveListing + +Invoked when a request for account listing has been made. + +#### Sample call + +```json + +{ + "jsonrpc": "2.0", + "id": 5, + "method": "ApproveListing", + "params": [ + { + "accounts": [ + { + "type": "Account", + "url": "keystore:///home/bazonk/.ethereum/keystore/UTC--2017-11-20T14-44-54.089682944Z--123409812340981234098123409812deadbeef42", + "address": "0x123409812340981234098123409812deadbeef42" + }, + { + "type": "Account", + "url": "keystore:///home/bazonk/.ethereum/keystore/UTC--2017-11-23T21-59-03.199240693Z--cafebabedeadbeef34098123409812deadbeef42", + "address": "0xcafebabedeadbeef34098123409812deadbeef42" + } + ], + "meta": { + "remote": "signer binary", + "local": "main", + "scheme": "in-proc" + } + } + ] +} + +``` + + +### ApproveSignData + +#### Sample call + +```json +{ + "jsonrpc": "2.0", + "id": 4, + "method": "ApproveSignData", + "params": [ + { + "address": "0x123409812340981234098123409812deadbeef42", + "raw_data": "0x01020304", + "message": "\u0019Ethereum Signed Message:\n4\u0001\u0002\u0003\u0004", + "hash": "0x7e3a4e7a9d1744bc5c675c25e1234ca8ed9162bd17f78b9085e48047c15ac310", + "meta": { + "remote": "signer binary", + "local": "main", + "scheme": "in-proc" + } + } + ] +} + +``` + +### ShowInfo + +The UI should show the info to the user. Does not expect response. + +#### Sample call + +```json +{ + "jsonrpc": "2.0", + "id": 9, + "method": "ShowInfo", + "params": [ + { + "text": "Tests completed" + } + ] +} + +``` + +### ShowError + +The UI should show the info to the user. Does not expect response. + +```json + +{ + "jsonrpc": "2.0", + "id": 2, + "method": "ShowError", + "params": [ + { + "text": "Testing 'ShowError'" + } + ] +} + +``` + +### OnApproved + +`OnApprovedTx` is called when a transaction has been approved and signed. The call contains the return value that will be sent to the external caller. The return value from this method is ignored - the reason for having this callback is to allow the ruleset to keep track of approved transactions. + +When implementing rate-limited rules, this callback should be used. + +TLDR; Use this method to keep track of signed transactions, instead of using the data in `ApproveTx`. + +### OnSignerStartup + +This method provide the UI with information about what API version the signer uses (both internal and external) aswell as build-info and external api, +in k/v-form. + +Example call: +```json + +{ + "jsonrpc": "2.0", + "id": 1, + "method": "OnSignerStartup", + "params": [ + { + "info": { + "extapi_http": "http://localhost:8550", + "extapi_ipc": null, + "extapi_version": "2.0.0", + "intapi_version": "1.2.0" + } + } + ] +} + +``` + + +### Rules for UI apis + +A UI should conform to the following rules. + +* A UI MUST NOT load any external resources that were not embedded/part of the UI package. + * For example, not load icons, stylesheets from the internet + * Not load files from the filesystem, unless they reside in the same local directory (e.g. config files) +* A Graphical UI MUST show the blocky-identicon for ethereum addresses. +* A UI MUST warn display approproate warning if the destination-account is formatted with invalid checksum. +* A UI MUST NOT open any ports or services + * The signer opens the public port +* A UI SHOULD verify the permissions on the signer binary, and refuse to execute or warn if permissions allow non-user write. +* A UI SHOULD inform the user about the `SHA256` or `MD5` hash of the binary being executed +* A UI SHOULD NOT maintain a secondary storage of data, e.g. list of accounts + * The signer provides accounts +* A UI SHOULD, to the best extent possible, use static linking / bundling, so that requried libraries are bundled +along with the UI. + + diff --git a/cmd/clef/extapi_changelog.md b/cmd/clef/extapi_changelog.md new file mode 100644 index 0000000000..2014e90ae4 --- /dev/null +++ b/cmd/clef/extapi_changelog.md @@ -0,0 +1,25 @@ +### Changelog for external API + + + +#### 2.0.0 + +* Commit `73abaf04b1372fa4c43201fb1b8019fe6b0a6f8d`, move `from` into `transaction` object in `signTransaction`. This +makes the `accounts_signTransaction` identical to the old `eth_signTransaction`. + + +#### 1.0.0 + +Initial release. + +### Versioning + +The API uses [semantic versioning](https://semver.org/). + +TLDR; Given a version number MAJOR.MINOR.PATCH, increment the: + +* MAJOR version when you make incompatible API changes, +* MINOR version when you add functionality in a backwards-compatible manner, and +* PATCH version when you make backwards-compatible bug fixes. + +Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format. diff --git a/cmd/clef/intapi_changelog.md b/cmd/clef/intapi_changelog.md new file mode 100644 index 0000000000..7d2a897ea2 --- /dev/null +++ b/cmd/clef/intapi_changelog.md @@ -0,0 +1,86 @@ +### Changelog for internal API (ui-api) + +### 2.0.0 + +* Modify how `call_info` on a transaction is conveyed. New format: + +``` +{ + "jsonrpc": "2.0", + "id": 2, + "method": "ApproveTx", + "params": [ + { + "transaction": { + "from": "0x82A2A876D39022B3019932D30Cd9c97ad5616813", + "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", + "gas": "0x333", + "gasPrice": "0x123", + "value": "0x10", + "nonce": "0x0", + "data": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012", + "input": null + }, + "call_info": [ + { + "type": "WARNING", + "message": "Invalid checksum on to-address" + }, + { + "type": "WARNING", + "message": "Tx contains data, but provided ABI signature could not be matched: Did not match: test (0 matches)" + } + ], + "meta": { + "remote": "127.0.0.1:54286", + "local": "localhost:8550", + "scheme": "HTTP/1.1" + } + } + ] +} +``` + +#### 1.2.0 + +* Add `OnStartup` method, to provide the UI with information about what API version +the signer uses (both internal and external) aswell as build-info and external api. + +Example call: +```json +{ + "jsonrpc": "2.0", + "id": 1, + "method": "OnSignerStartup", + "params": [ + { + "info": { + "extapi_http": "http://localhost:8550", + "extapi_ipc": null, + "extapi_version": "2.0.0", + "intapi_version": "1.2.0" + } + } + ] +} +``` + +#### 1.1.0 + +* Add `OnApproved` method + +#### 1.0.0 + +Initial release. + +### Versioning + +The API uses [semantic versioning](https://semver.org/). + +TLDR; Given a version number MAJOR.MINOR.PATCH, increment the: + +* MAJOR version when you make incompatible API changes, +* MINOR version when you add functionality in a backwards-compatible manner, and +* PATCH version when you make backwards-compatible bug fixes. + +Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format. diff --git a/cmd/clef/main.go b/cmd/clef/main.go new file mode 100644 index 0000000000..fb91f4c258 --- /dev/null +++ b/cmd/clef/main.go @@ -0,0 +1,640 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +// signer is a utility that can be used so sign transactions and +// arbitrary data. +package main + +import ( + "bufio" + "context" + "crypto/rand" + "crypto/sha256" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "os/user" + "path/filepath" + "runtime" + "strings" + + "encoding/hex" + "github.com/ethereum/go-ethereum/cmd/utils" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/node" + "github.com/ethereum/go-ethereum/rpc" + "github.com/ethereum/go-ethereum/signer/core" + "github.com/ethereum/go-ethereum/signer/rules" + "github.com/ethereum/go-ethereum/signer/storage" + "gopkg.in/urfave/cli.v1" + "os/signal" +) + +// ExternalApiVersion -- see extapi_changelog.md +const ExternalApiVersion = "2.0.0" + +// InternalApiVersion -- see intapi_changelog.md +const InternalApiVersion = "2.0.0" + +const legalWarning = ` +WARNING! + +Clef is alpha software, and not yet publically released. This software has _not_ been audited, and there +are no guarantees about the workings of this software. It may contain severe flaws. You should not use this software +unless you agree to take full responsibility for doing so, and know what you are doing. + +TLDR; THIS IS NOT PRODUCTION-READY SOFTWARE! + +` + +var ( + logLevelFlag = cli.IntFlag{ + Name: "loglevel", + Value: 4, + Usage: "log level to emit to the screen", + } + keystoreFlag = cli.StringFlag{ + Name: "keystore", + Value: filepath.Join(node.DefaultDataDir(), "keystore"), + Usage: "Directory for the keystore", + } + configdirFlag = cli.StringFlag{ + Name: "configdir", + Value: DefaultConfigDir(), + Usage: "Directory for Clef configuration", + } + rpcPortFlag = cli.IntFlag{ + Name: "rpcport", + Usage: "HTTP-RPC server listening port", + Value: node.DefaultHTTPPort + 5, + } + signerSecretFlag = cli.StringFlag{ + Name: "signersecret", + Usage: "A file containing the password used to encrypt Clef credentials, e.g. keystore credentials and ruleset hash", + } + dBFlag = cli.StringFlag{ + Name: "4bytedb", + Usage: "File containing 4byte-identifiers", + Value: "./4byte.json", + } + customDBFlag = cli.StringFlag{ + Name: "4bytedb-custom", + Usage: "File used for writing new 4byte-identifiers submitted via API", + Value: "./4byte-custom.json", + } + auditLogFlag = cli.StringFlag{ + Name: "auditlog", + Usage: "File used to emit audit logs. Set to \"\" to disable", + Value: "audit.log", + } + ruleFlag = cli.StringFlag{ + Name: "rules", + Usage: "Enable rule-engine", + Value: "rules.json", + } + stdiouiFlag = cli.BoolFlag{ + Name: "stdio-ui", + Usage: "Use STDIN/STDOUT as a channel for an external UI. " + + "This means that an STDIN/STDOUT is used for RPC-communication with a e.g. a graphical user " + + "interface, and can be used when Clef is started by an external process.", + } + testFlag = cli.BoolFlag{ + Name: "stdio-ui-test", + Usage: "Mechanism to test interface between Clef and UI. Requires 'stdio-ui'.", + } + app = cli.NewApp() + initCommand = cli.Command{ + Action: utils.MigrateFlags(initializeSecrets), + Name: "init", + Usage: "Initialize the signer, generate secret storage", + ArgsUsage: "", + Flags: []cli.Flag{ + logLevelFlag, + configdirFlag, + }, + Description: ` +The init command generates a master seed which Clef can use to store credentials and data needed for +the rule-engine to work.`, + } + attestCommand = cli.Command{ + Action: utils.MigrateFlags(attestFile), + Name: "attest", + Usage: "Attest that a js-file is to be used", + ArgsUsage: "", + Flags: []cli.Flag{ + logLevelFlag, + configdirFlag, + signerSecretFlag, + }, + Description: ` +The attest command stores the sha256 of the rule.js-file that you want to use for automatic processing of +incoming requests. + +Whenever you make an edit to the rule file, you need to use attestation to tell +Clef that the file is 'safe' to execute.`, + } + + addCredentialCommand = cli.Command{ + Action: utils.MigrateFlags(addCredential), + Name: "addpw", + Usage: "Store a credential for a keystore file", + ArgsUsage: "
", + Flags: []cli.Flag{ + logLevelFlag, + configdirFlag, + signerSecretFlag, + }, + Description: ` +The addpw command stores a password for a given address (keyfile). If you invoke it with only one parameter, it will +remove any stored credential for that address (keyfile) +`, + } +) + +func init() { + app.Name = "Clef" + app.Usage = "Manage Ethereum account operations" + app.Flags = []cli.Flag{ + logLevelFlag, + keystoreFlag, + configdirFlag, + utils.NetworkIdFlag, + utils.LightKDFFlag, + utils.NoUSBFlag, + utils.RPCListenAddrFlag, + utils.RPCVirtualHostsFlag, + utils.IPCDisabledFlag, + utils.IPCPathFlag, + utils.RPCEnabledFlag, + rpcPortFlag, + signerSecretFlag, + dBFlag, + customDBFlag, + auditLogFlag, + ruleFlag, + stdiouiFlag, + testFlag, + } + app.Action = signer + app.Commands = []cli.Command{initCommand, attestCommand, addCredentialCommand} + +} +func main() { + if err := app.Run(os.Args); err != nil { + fmt.Fprintln(os.Stderr, err) + os.Exit(1) + } +} + +func initializeSecrets(c *cli.Context) error { + if err := initialize(c); err != nil { + return err + } + configDir := c.String(configdirFlag.Name) + + masterSeed := make([]byte, 256) + n, err := io.ReadFull(rand.Reader, masterSeed) + if err != nil { + return err + } + if n != len(masterSeed) { + return fmt.Errorf("failed to read enough random") + } + err = os.Mkdir(configDir, 0700) + if err != nil && !os.IsExist(err) { + return err + } + location := filepath.Join(configDir, "secrets.dat") + if _, err := os.Stat(location); err == nil { + return fmt.Errorf("file %v already exists, will not overwrite", location) + } + err = ioutil.WriteFile(location, masterSeed, 0700) + if err != nil { + return err + } + fmt.Printf("A master seed has been generated into %s\n", location) + fmt.Printf(` +This is required to be able to store credentials, such as : +* Passwords for keystores (used by rule engine) +* Storage for javascript rules +* Hash of rule-file + +You should treat that file with utmost secrecy, and make a backup of it. +NOTE: This file does not contain your accounts. Those need to be backed up separately! + +`) + return nil +} +func attestFile(ctx *cli.Context) error { + if len(ctx.Args()) < 1 { + utils.Fatalf("This command requires an argument.") + } + if err := initialize(ctx); err != nil { + return err + } + + stretchedKey, err := readMasterKey(ctx) + if err != nil { + utils.Fatalf(err.Error()) + } + configDir := ctx.String(configdirFlag.Name) + vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10])) + confKey := crypto.Keccak256([]byte("config"), stretchedKey) + + // Initialize the encrypted storages + configStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "config.json"), confKey) + val := ctx.Args().First() + configStorage.Put("ruleset_sha256", val) + log.Info("Ruleset attestation updated", "sha256", val) + return nil +} + +func addCredential(ctx *cli.Context) error { + if len(ctx.Args()) < 1 { + utils.Fatalf("This command requires at leaste one argument.") + } + if err := initialize(ctx); err != nil { + return err + } + + stretchedKey, err := readMasterKey(ctx) + if err != nil { + utils.Fatalf(err.Error()) + } + configDir := ctx.String(configdirFlag.Name) + vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10])) + pwkey := crypto.Keccak256([]byte("credentials"), stretchedKey) + + // Initialize the encrypted storages + pwStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "credentials.json"), pwkey) + key := ctx.Args().First() + value := "" + if len(ctx.Args()) > 1 { + value = ctx.Args().Get(1) + } + pwStorage.Put(key, value) + log.Info("Credential store updated", "key", key) + return nil +} + +func initialize(c *cli.Context) error { + // Set up the logger to print everything + logOutput := os.Stdout + if c.Bool(stdiouiFlag.Name) { + logOutput = os.Stderr + // If using the stdioui, we can't do the 'confirm'-flow + fmt.Fprintf(logOutput, legalWarning) + } else { + if !confirm(legalWarning) { + return fmt.Errorf("aborted by user") + } + } + + log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(c.Int(logLevelFlag.Name)), log.StreamHandler(logOutput, log.TerminalFormat(true)))) + return nil +} + +func signer(c *cli.Context) error { + if err := initialize(c); err != nil { + return err + } + var ( + ui core.SignerUI + ) + if c.Bool(stdiouiFlag.Name) { + log.Info("Using stdin/stdout as UI-channel") + ui = core.NewStdIOUI() + } else { + log.Info("Using CLI as UI-channel") + ui = core.NewCommandlineUI() + } + db, err := core.NewAbiDBFromFiles(c.String(dBFlag.Name), c.String(customDBFlag.Name)) + if err != nil { + utils.Fatalf(err.Error()) + } + log.Info("Loaded 4byte db", "signatures", db.Size(), "file", c.String("4bytedb")) + + var ( + api core.ExternalAPI + ) + + configDir := c.String(configdirFlag.Name) + if stretchedKey, err := readMasterKey(c); err != nil { + log.Info("No master seed provided, rules disabled") + } else { + + if err != nil { + utils.Fatalf(err.Error()) + } + vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10])) + + // Generate domain specific keys + pwkey := crypto.Keccak256([]byte("credentials"), stretchedKey) + jskey := crypto.Keccak256([]byte("jsstorage"), stretchedKey) + confkey := crypto.Keccak256([]byte("config"), stretchedKey) + + // Initialize the encrypted storages + pwStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "credentials.json"), pwkey) + jsStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "jsstorage.json"), jskey) + configStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "config.json"), confkey) + + //Do we have a rule-file? + ruleJS, err := ioutil.ReadFile(c.String(ruleFlag.Name)) + if err != nil { + log.Info("Could not load rulefile, rules not enabled", "file", "rulefile") + } else { + hasher := sha256.New() + hasher.Write(ruleJS) + shasum := hasher.Sum(nil) + storedShasum := configStorage.Get("ruleset_sha256") + if storedShasum != hex.EncodeToString(shasum) { + log.Info("Could not validate ruleset hash, rules not enabled", "got", hex.EncodeToString(shasum), "expected", storedShasum) + } else { + // Initialize rules + ruleEngine, err := rules.NewRuleEvaluator(ui, jsStorage, pwStorage) + if err != nil { + utils.Fatalf(err.Error()) + } + ruleEngine.Init(string(ruleJS)) + ui = ruleEngine + log.Info("Rule engine configured", "file", c.String(ruleFlag.Name)) + } + } + } + + apiImpl := core.NewSignerAPI( + c.Int64(utils.NetworkIdFlag.Name), + c.String(keystoreFlag.Name), + c.Bool(utils.NoUSBFlag.Name), + ui, db, + c.Bool(utils.LightKDFFlag.Name)) + + api = apiImpl + + // Audit logging + if logfile := c.String(auditLogFlag.Name); logfile != "" { + api, err = core.NewAuditLogger(logfile, api) + if err != nil { + utils.Fatalf(err.Error()) + } + log.Info("Audit logs configured", "file", logfile) + } + // register signer API with server + var ( + extapiUrl = "n/a" + ipcApiUrl = "n/a" + ) + rpcApi := []rpc.API{ + { + Namespace: "account", + Public: true, + Service: api, + Version: "1.0"}, + } + if c.Bool(utils.RPCEnabledFlag.Name) { + + vhosts := splitAndTrim(c.GlobalString(utils.RPCVirtualHostsFlag.Name)) + cors := splitAndTrim(c.GlobalString(utils.RPCCORSDomainFlag.Name)) + + // start http server + httpEndpoint := fmt.Sprintf("%s:%d", c.String(utils.RPCListenAddrFlag.Name), c.Int(rpcPortFlag.Name)) + listener, _, err := rpc.StartHTTPEndpoint(httpEndpoint, rpcApi, []string{"account"}, cors, vhosts) + if err != nil { + utils.Fatalf("Could not start RPC api: %v", err) + } + extapiUrl = fmt.Sprintf("http://%s", httpEndpoint) + log.Info("HTTP endpoint opened", "url", extapiUrl) + + defer func() { + listener.Close() + log.Info("HTTP endpoint closed", "url", httpEndpoint) + }() + + } + if !c.Bool(utils.IPCDisabledFlag.Name) { + if c.IsSet(utils.IPCPathFlag.Name) { + ipcApiUrl = c.String(utils.IPCPathFlag.Name) + } else { + ipcApiUrl = filepath.Join(configDir, "clef.ipc") + } + + listener, _, err := rpc.StartIPCEndpoint(func() bool { return true }, ipcApiUrl, rpcApi) + if err != nil { + utils.Fatalf("Could not start IPC api: %v", err) + } + log.Info("IPC endpoint opened", "url", ipcApiUrl) + defer func() { + listener.Close() + log.Info("IPC endpoint closed", "url", ipcApiUrl) + }() + + } + + if c.Bool(testFlag.Name) { + log.Info("Performing UI test") + go testExternalUI(apiImpl) + } + ui.OnSignerStartup(core.StartupInfo{ + Info: map[string]interface{}{ + "extapi_version": ExternalApiVersion, + "intapi_version": InternalApiVersion, + "extapi_http": extapiUrl, + "extapi_ipc": ipcApiUrl, + }, + }) + + abortChan := make(chan os.Signal) + signal.Notify(abortChan, os.Interrupt) + + sig := <-abortChan + log.Info("Exiting...", "signal", sig) + + return nil +} + +// splitAndTrim splits input separated by a comma +// and trims excessive white space from the substrings. +func splitAndTrim(input string) []string { + result := strings.Split(input, ",") + for i, r := range result { + result[i] = strings.TrimSpace(r) + } + return result +} + +// DefaultConfigDir is the default config directory to use for the vaults and other +// persistence requirements. +func DefaultConfigDir() string { + // Try to place the data folder in the user's home dir + home := homeDir() + if home != "" { + if runtime.GOOS == "darwin" { + return filepath.Join(home, "Library", "Signer") + } else if runtime.GOOS == "windows" { + return filepath.Join(home, "AppData", "Roaming", "Signer") + } else { + return filepath.Join(home, ".clef") + } + } + // As we cannot guess a stable location, return empty and handle later + return "" +} + +func homeDir() string { + if home := os.Getenv("HOME"); home != "" { + return home + } + if usr, err := user.Current(); err == nil { + return usr.HomeDir + } + return "" +} +func readMasterKey(ctx *cli.Context) ([]byte, error) { + var ( + file string + configDir = ctx.String(configdirFlag.Name) + ) + if ctx.IsSet(signerSecretFlag.Name) { + file = ctx.String(signerSecretFlag.Name) + } else { + file = filepath.Join(configDir, "secrets.dat") + } + if err := checkFile(file); err != nil { + return nil, err + } + masterKey, err := ioutil.ReadFile(file) + if err != nil { + return nil, err + } + if len(masterKey) < 256 { + return nil, fmt.Errorf("master key of insufficient length, expected >255 bytes, got %d", len(masterKey)) + } + // Create vault location + vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), masterKey)[:10])) + err = os.Mkdir(vaultLocation, 0700) + if err != nil && !os.IsExist(err) { + return nil, err + } + //!TODO, use KDF to stretch the master key + // stretched_key := stretch_key(master_key) + + return masterKey, nil +} + +// checkFile is a convenience function to check if a file +// * exists +// * is mode 0600 +func checkFile(filename string) error { + info, err := os.Stat(filename) + if err != nil { + return fmt.Errorf("failed stat on %s: %v", filename, err) + } + // Check the unix permission bits + if info.Mode().Perm()&077 != 0 { + return fmt.Errorf("file (%v) has insecure file permissions (%v)", filename, info.Mode().String()) + } + return nil +} + +// confirm displays a text and asks for user confirmation +func confirm(text string) bool { + fmt.Printf(text) + fmt.Printf("\nEnter 'ok' to proceed:\n>") + + text, err := bufio.NewReader(os.Stdin).ReadString('\n') + if err != nil { + log.Crit("Failed to read user input", "err", err) + } + + if text := strings.TrimSpace(text); text == "ok" { + return true + } + return false +} + +func testExternalUI(api *core.SignerAPI) { + + ctx := context.WithValue(context.Background(), "remote", "clef binary") + ctx = context.WithValue(ctx, "scheme", "in-proc") + ctx = context.WithValue(ctx, "local", "main") + + errs := make([]string, 0) + + api.UI.ShowInfo("Testing 'ShowInfo'") + api.UI.ShowError("Testing 'ShowError'") + + checkErr := func(method string, err error) { + if err != nil && err != core.ErrRequestDenied { + errs = append(errs, fmt.Sprintf("%v: %v", method, err.Error())) + } + } + var err error + + _, err = api.SignTransaction(ctx, core.SendTxArgs{From: common.MixedcaseAddress{}}, nil) + checkErr("SignTransaction", err) + _, err = api.Sign(ctx, common.MixedcaseAddress{}, common.Hex2Bytes("01020304")) + checkErr("Sign", err) + _, err = api.List(ctx) + checkErr("List", err) + _, err = api.New(ctx) + checkErr("New", err) + _, err = api.Export(ctx, common.Address{}) + checkErr("Export", err) + _, err = api.Import(ctx, json.RawMessage{}) + checkErr("Import", err) + + api.UI.ShowInfo("Tests completed") + + if len(errs) > 0 { + log.Error("Got errors") + for _, e := range errs { + log.Error(e) + } + } else { + log.Info("No errors") + } + +} + +/** +//Create Account + +curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_new","params":["test"],"id":67}' localhost:8550 + +// List accounts + +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_list","params":[""],"id":67}' http://localhost:8550/ + +// Make Transaction +// safeSend(0x12) +// 4401a6e40000000000000000000000000000000000000000000000000000000000000012 + +// supplied abi +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x82A2A876D39022B3019932D30Cd9c97ad5616813","gas":"0x333","gasPrice":"0x123","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x10", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"},"test"],"id":67}' http://localhost:8550/ + +// Not supplied +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x82A2A876D39022B3019932D30Cd9c97ad5616813","gas":"0x333","gasPrice":"0x123","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x10", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"}],"id":67}' http://localhost:8550/ + +// Sign data + +curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_sign","params":["0x694267f14675d7e1b9494fd8d72fefe1755710fa","bazonk gaz baz"],"id":67}' http://localhost:8550/ + + +**/ diff --git a/cmd/clef/pythonsigner.py b/cmd/clef/pythonsigner.py new file mode 100644 index 0000000000..46fa23bd8c --- /dev/null +++ b/cmd/clef/pythonsigner.py @@ -0,0 +1,179 @@ +import os,sys, subprocess +from tinyrpc.transports import ServerTransport +from tinyrpc.protocols.jsonrpc import JSONRPCProtocol +from tinyrpc.dispatch import public,RPCDispatcher +from tinyrpc.server import RPCServer + +""" This is a POC example of how to write a custom UI for Clef. The UI starts the +clef process with the '--stdio-ui' option, and communicates with clef using standard input / output. + +The standard input/output is a relatively secure way to communicate, as it does not require opening any ports +or IPC files. Needless to say, it does not protect against memory inspection mechanisms where an attacker +can access process memory.""" + +try: + import urllib.parse as urlparse +except ImportError: + import urllib as urlparse + +class StdIOTransport(ServerTransport): + """ Uses std input/output for RPC """ + def receive_message(self): + return None, urlparse.unquote(sys.stdin.readline()) + + def send_reply(self, context, reply): + print(reply) + +class PipeTransport(ServerTransport): + """ Uses std a pipe for RPC """ + + def __init__(self,input, output): + self.input = input + self.output = output + + def receive_message(self): + data = self.input.readline() + print(">> {}".format( data)) + return None, urlparse.unquote(data) + + def send_reply(self, context, reply): + print("<< {}".format( reply)) + self.output.write(reply) + self.output.write("\n") + +class StdIOHandler(): + + def __init__(self): + pass + + @public + def ApproveTx(self,req): + """ + Example request: + { + "jsonrpc": "2.0", + "method": "ApproveTx", + "params": [{ + "transaction": { + "to": "0xae967917c465db8578ca9024c205720b1a3651A9", + "gas": "0x333", + "gasPrice": "0x123", + "value": "0x10", + "data": "0xd7a5865800000000000000000000000000000000000000000000000000000000000000ff", + "nonce": "0x0" + }, + "from": "0xAe967917c465db8578ca9024c205720b1a3651A9", + "call_info": "Warning! Could not validate ABI-data against calldata\nSupplied ABI spec does not contain method signature in data: 0xd7a58658", + "meta": { + "remote": "127.0.0.1:34572", + "local": "localhost:8550", + "scheme": "HTTP/1.1" + } + }], + "id": 1 + } + + :param transaction: transaction info + :param call_info: info abou the call, e.g. if ABI info could not be + :param meta: metadata about the request, e.g. where the call comes from + :return: + """ + transaction = req.get('transaction') + _from = req.get('from') + call_info = req.get('call_info') + meta = req.get('meta') + + return { + "approved" : False, + #"transaction" : transaction, + # "from" : _from, +# "password" : None, + } + + @public + def ApproveSignData(self, req): + """ Example request + + """ + return {"approved": False, "password" : None} + + @public + def ApproveExport(self, req): + """ Example request + + """ + return {"approved" : False} + + @public + def ApproveImport(self, req): + """ Example request + + """ + return { "approved" : False, "old_password": "", "new_password": ""} + + @public + def ApproveListing(self, req): + """ Example request + + """ + return {'accounts': []} + + @public + def ApproveNewAccount(self, req): + """ + Example request + + :return: + """ + return {"approved": False, + #"password": "" + } + + @public + def ShowError(self,message = {}): + """ + Example request: + + {"jsonrpc":"2.0","method":"ShowInfo","params":{"message":"Testing 'ShowError'"},"id":1} + + :param message: to show + :return: nothing + """ + if 'text' in message.keys(): + sys.stderr.write("Error: {}\n".format( message['text'])) + return + + @public + def ShowInfo(self,message = {}): + """ + Example request + {"jsonrpc":"2.0","method":"ShowInfo","params":{"message":"Testing 'ShowInfo'"},"id":0} + + :param message: to display + :return:nothing + """ + + if 'text' in message.keys(): + sys.stdout.write("Error: {}\n".format( message['text'])) + return + +def main(args): + + cmd = ["./clef", "--stdio-ui"] + if len(args) > 0 and args[0] == "test": + cmd.extend(["--stdio-ui-test"]) + print("cmd: {}".format(" ".join(cmd))) + dispatcher = RPCDispatcher() + dispatcher.register_instance(StdIOHandler(), '') + # line buffered + p = subprocess.Popen(cmd, bufsize=1, universal_newlines=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE) + + rpc_server = RPCServer( + PipeTransport(p.stdout, p.stdin), + JSONRPCProtocol(), + dispatcher + ) + rpc_server.serve_forever() + +if __name__ == '__main__': + main(sys.argv[1:]) diff --git a/cmd/clef/rules.md b/cmd/clef/rules.md new file mode 100644 index 0000000000..327ba765c5 --- /dev/null +++ b/cmd/clef/rules.md @@ -0,0 +1,236 @@ +# Rules + +The `signer` binary contains a ruleset engine, implemented with [OttoVM](https://github.com/robertkrimen/otto) + +It enables usecases like the following: + +* I want to auto-approve transactions with contract `CasinoDapp`, with up to `0.05 ether` in value to maximum `1 ether` per 24h period +* I want to auto-approve transaction to contract `EthAlarmClock` with `data`=`0xdeadbeef`, if `value=0`, `gas < 44k` and `gasPrice < 40Gwei` + +The two main features that are required for this to work well are; + +1. Rule Implementation: how to create, manage and interpret rules in a flexible but secure manner +2. Credential managements and credentials; how to provide auto-unlock without exposing keys unnecessarily. + +The section below deals with both of them + +## Rule Implementation + +A ruleset file is implemented as a `js` file. Under the hood, the ruleset-engine is a `SignerUI`, implementing the same methods as the `json-rpc` methods +defined in the UI protocol. Example: + +```javascript + +function asBig(str){ + if(str.slice(0,2) == "0x"){ return new BigNumber(str.slice(2),16)} + return new BigNumber(str) +} + +// Approve transactions to a certain contract if value is below a certain limit +function ApproveTx(req){ + + var limit = big.Newint("0xb1a2bc2ec50000") + var value = asBig(req.transaction.value); + + if(req.transaction.to.toLowerCase()=="0xae967917c465db8578ca9024c205720b1a3651a9") + && value.lt(limit) ){ + return "Approve" + } + // If we return "Reject", it will be rejected. + // By not returning anything, it will be passed to the next UI, for manual processing +} + +//Approve listings if request made from IPC +function ApproveListing(req){ + if (req.metadata.scheme == "ipc"){ return "Approve"} +} + +``` + +Whenever the external API is called (and the ruleset is enabled), the `signer` calls the UI, which is an instance of a ruleset-engine. The ruleset-engine +invokes the corresponding method. In doing so, there are three possible outcomes: + +1. JS returns "Approve" + * Auto-approve request +2. JS returns "Reject" + * Auto-reject request +3. Error occurs, or something else is returned + * Pass on to `next` ui: the regular UI channel. + +A more advanced example can be found below, "Example 1: ruleset for a rate-limited window", using `storage` to `Put` and `Get` `string`s by key. + +* At the time of writing, storage only exists as an ephemeral unencrypted implementation, to be used during testing. + +### Things to note + +The Otto vm has a few [caveats](https://github.com/robertkrimen/otto): + +* "use strict" will parse, but does nothing. +* The regular expression engine (re2/regexp) is not fully compatible with the ECMA5 specification. +* Otto targets ES5. ES6 features (eg: Typed Arrays) are not supported. + +Additionally, a few more have been added + +* The rule execution cannot load external javascript files. +* The only preloaded libary is [`bignumber.js`](https://github.com/MikeMcl/bignumber.js) version `2.0.3`. This one is fairly old, and is not aligned with the documentation at the github repository. +* Each invocation is made in a fresh virtual machine. This means that you cannot store data in global variables between invocations. This is a deliberate choice -- if you want to store data, use the disk-backed `storage`, since rules should not rely on ephemeral data. +* Javascript API parameters are _always_ an object. This is also a design choice, to ensure that parameters are accessed by _key_ and not by order. This is to prevent mistakes due to missing parameters or parameter changes. +* The JS engine has access to `storage` and `console`. + +#### Security considerations + +##### Security of ruleset + +Some security precautions can be made, such as: + +* Never load `ruleset.js` unless the file is `readonly` (`r-??-??-?`). If the user wishes to modify the ruleset, he must make it writeable and then set back to readonly. + * This is to prevent attacks where files are dropped on the users disk. +* Since we're going to have to have some form of secure storage (not defined in this section), we could also store the `sha3` of the `ruleset.js` file in there. + * If the user wishes to modify the ruleset, he'd then have to perform e.g. `signer --attest /path/to/ruleset --credential ` + +##### Security of implementation + +The drawbacks of this very flexible solution is that the `signer` needs to contain a javascript engine. This is pretty simple to implement, since it's already +implemented for `geth`. There are no known security vulnerabilities in, nor have we had any security-problems with it so far. + +The javascript engine would be an added attack surface; but if the validation of `rulesets` is made good (with hash-based attestation), the actual javascript cannot be considered +an attack surface -- if an attacker can control the ruleset, a much simpler attack would be to implement an "always-approve" rule instead of exploiting the js vm. The only benefit +to be gained from attacking the actual `signer` process from the `js` side would be if it could somehow extract cryptographic keys from memory. + +##### Security in usability + +Javascript is flexible, but also easy to get wrong, especially when users assume that `js` can handle large integers natively. Typical errors +include trying to multiply `gasCost` with `gas` without using `bigint`:s. + +It's unclear whether any other DSL could be more secure; since there's always the possibility of erroneously implementing a rule. + + +## Credential management + +The ability to auto-approve transaction means that the signer needs to have necessary credentials to decrypt keyfiles. These passwords are hereafter called `ksp` (keystore pass). + +### Example implementation + +Upon startup of the signer, the signer is given a switch: `--seed ` +The `seed` contains a blob of bytes, which is the master seed for the `signer`. + +The `signer` uses the `seed` to: + +* Generate the `path` where the settings are stored. + * `./settings/1df094eb-c2b1-4689-90dd-790046d38025/vault.dat` + * `./settings/1df094eb-c2b1-4689-90dd-790046d38025/rules.js` +* Generate the encryption password for `vault.dat`. + +The `vault.dat` would be an encrypted container storing the following information: + +* `ksp` entries +* `sha256` hash of `rules.js` +* Information about pair:ed callers (not yet specified) + +### Security considerations + +This would leave it up to the user to ensure that the `path/to/masterseed` is handled in a secure way. It's difficult to get around this, although one could +imagine leveraging OS-level keychains where supported. The setup is however in general similar to how ssh-keys are stored in `.ssh/`. + + +# Implementation status + +This is now implemented (with ephemeral non-encrypted storage for now, so not yet enabled). + +## Example 1: ruleset for a rate-limited window + + +```javascript + + function big(str){ + if(str.slice(0,2) == "0x"){ return new BigNumber(str.slice(2),16)} + return new BigNumber(str) + } + + // Time window: 1 week + var window = 1000* 3600*24*7; + + // Limit : 1 ether + var limit = new BigNumber("1e18"); + + function isLimitOk(transaction){ + var value = big(transaction.value) + // Start of our window function + var windowstart = new Date().getTime() - window; + + var txs = []; + var stored = storage.Get('txs'); + + if(stored != ""){ + txs = JSON.parse(stored) + } + // First, remove all that have passed out of the time-window + var newtxs = txs.filter(function(tx){return tx.tstamp > windowstart}); + console.log(txs, newtxs.length); + + // Secondly, aggregate the current sum + sum = new BigNumber(0) + + sum = newtxs.reduce(function(agg, tx){ return big(tx.value).plus(agg)}, sum); + console.log("ApproveTx > Sum so far", sum); + console.log("ApproveTx > Requested", value.toNumber()); + + // Would we exceed weekly limit ? + return sum.plus(value).lt(limit) + + } + function ApproveTx(r){ + if (isLimitOk(r.transaction)){ + return "Approve" + } + return "Nope" + } + + /** + * OnApprovedTx(str) is called when a transaction has been approved and signed. The parameter + * 'response_str' contains the return value that will be sent to the external caller. + * The return value from this method is ignore - the reason for having this callback is to allow the + * ruleset to keep track of approved transactions. + * + * When implementing rate-limited rules, this callback should be used. + * If a rule responds with neither 'Approve' nor 'Reject' - the tx goes to manual processing. If the user + * then accepts the transaction, this method will be called. + * + * TLDR; Use this method to keep track of signed transactions, instead of using the data in ApproveTx. + */ + function OnApprovedTx(resp){ + var value = big(resp.tx.value) + var txs = [] + // Load stored transactions + var stored = storage.Get('txs'); + if(stored != ""){ + txs = JSON.parse(stored) + } + // Add this to the storage + txs.push({tstamp: new Date().getTime(), value: value}); + storage.Put("txs", JSON.stringify(txs)); + } + +``` + +## Example 2: allow destination + +```javascript + + function ApproveTx(r){ + if(r.transaction.from.toLowerCase()=="0x0000000000000000000000000000000000001337"){ return "Approve"} + if(r.transaction.from.toLowerCase()=="0x000000000000000000000000000000000000dead"){ return "Reject"} + // Otherwise goes to manual processing + } + +``` + +## Example 3: Allow listing + +```javascript + + function ApproveListing(){ + return "Approve" + } + +``` \ No newline at end of file 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z7pK?JZW7>NE1Ak?pX+H#%;lP`*~i=e{>5(;sp6 zH9BIuUT1$28!qzl!6A`9|AWx~Z@1j9)^A_(ip7rDyw9s5Hg#@aeOqOfx$`T3^(m`+ z^U=e@mEy+o{R$cz!uuze$I=*+4S-c;E5GcA$#?!gdIi6o=ZX)YBs6aMS)Y6b^_cq6 Jj3cLi{67My(TV^7 literal 0 HcmV?d00001 diff --git a/cmd/clef/tutorial.md b/cmd/clef/tutorial.md new file mode 100644 index 0000000000..d59e08ac7a --- /dev/null +++ b/cmd/clef/tutorial.md @@ -0,0 +1,198 @@ +## Initializing the signer + +First, initialize the master seed. + +```text +#./signer init + +WARNING! + +The signer is alpha software, and not yet publically released. This software has _not_ been audited, and there +are no guarantees about the workings of this software. It may contain severe flaws. You should not use this software +unless you agree to take full responsibility for doing so, and know what you are doing. + +TLDR; THIS IS NOT PRODUCTION-READY SOFTWARE! + + +Enter 'ok' to proceed: +>ok +A master seed has been generated into /home/martin/.signer/secrets.dat + +This is required to be able to store credentials, such as : +* Passwords for keystores (used by rule engine) +* Storage for javascript rules +* Hash of rule-file + +You should treat that file with utmost secrecy, and make a backup of it. +NOTE: This file does not contain your accounts. Those need to be backed up separately! +``` + +(for readability purposes, we'll remove the WARNING printout in the rest of this document) + +## Creating rules + +Now, you can create a rule-file. + +```javascript +function ApproveListing(){ + return "Approve" +} +``` +Get the `sha256` hash.... +```text +#sha256sum rules.js +6c21d1737429d6d4f2e55146da0797782f3c0a0355227f19d702df377c165d72 rules.js +``` +...And then `attest` the file: +```text +#./signer attest 6c21d1737429d6d4f2e55146da0797782f3c0a0355227f19d702df377c165d72 + +INFO [02-21|12:14:38] Ruleset attestation updated sha256=6c21d1737429d6d4f2e55146da0797782f3c0a0355227f19d702df377c165d72 +``` +At this point, we then start the signer with the rule-file: + +```text +#./signer --rules rules.json + +INFO [02-21|12:15:18] Using CLI as UI-channel +INFO [02-21|12:15:18] Loaded 4byte db signatures=5509 file=./4byte.json +INFO [02-21|12:15:18] Could not load rulefile, rules not enabled file=rulefile +DEBUG[02-21|12:15:18] FS scan times list=35.335µs set=5.536µs diff=5.073µs +DEBUG[02-21|12:15:18] Ledger support enabled +DEBUG[02-21|12:15:18] Trezor support enabled +INFO [02-21|12:15:18] Audit logs configured file=audit.log +INFO [02-21|12:15:18] HTTP endpoint opened url=http://localhost:8550 +------- Signer info ------- +* extapi_http : http://localhost:8550 +* extapi_ipc : +* extapi_version : 2.0.0 +* intapi_version : 1.2.0 + +``` + +Any list-requests will now be auto-approved by our rule-file. + +## Under the hood + +While doing the operations above, these files have been created: + +```text +#ls -laR ~/.signer/ +/home/martin/.signer/: +total 16 +drwx------ 3 martin martin 4096 feb 21 12:14 . +drwxr-xr-x 71 martin martin 4096 feb 21 12:12 .. +drwx------ 2 martin martin 4096 feb 21 12:14 43f73718397aa54d1b22 +-rwx------ 1 martin martin 256 feb 21 12:12 secrets.dat + +/home/martin/.signer/43f73718397aa54d1b22: +total 12 +drwx------ 2 martin martin 4096 feb 21 12:14 . +drwx------ 3 martin martin 4096 feb 21 12:14 .. +-rw------- 1 martin martin 159 feb 21 12:14 config.json + +#cat /home/martin/.signer/43f73718397aa54d1b22/config.json +{"ruleset_sha256":{"iv":"6v4W4tfJxj3zZFbl","c":"6dt5RTDiTq93yh1qDEjpsat/tsKG7cb+vr3sza26IPL2fvsQ6ZoqFx++CPUa8yy6fD9Bbq41L01ehkKHTG3pOAeqTW6zc/+t0wv3AB6xPmU="}} + +``` + +In `~/.signer`, the `secrets.dat` file was created, containing the `master_seed`. +The `master_seed` was then used to derive a few other things: + +- `vault_location` : in this case `43f73718397aa54d1b22` . + - Thus, if you use a different `master_seed`, another `vault_location` will be used that does not conflict with each other. + - Example: `signer --signersecret /path/to/afile ...` +- `config.json` which is the encrypted key/value storage for configuration data, containing the key `ruleset_sha256`. + + +## Adding credentials + +In order to make more useful rules; sign transactions, the signer needs access to the passwords needed to unlock keystores. + +```text +#./signer addpw 0x694267f14675d7e1b9494fd8d72fefe1755710fa test + +INFO [02-21|13:43:21] Credential store updated key=0x694267f14675d7e1b9494fd8d72fefe1755710fa +``` +## More advanced rules + +Now let's update the rules to make use of credentials + +```javascript +function ApproveListing(){ + return "Approve" +} +function ApproveSignData(r){ + if( r.address.toLowerCase() == "0x694267f14675d7e1b9494fd8d72fefe1755710fa") + { + if(r.message.indexOf("bazonk") >= 0){ + return "Approve" + } + return "Reject" + } + // Otherwise goes to manual processing +} + +``` +In this example, +* any requests to sign data with the account `0x694...` will be + * auto-approved if the message contains with `bazonk`, + * and auto-rejected if it does not. + * Any other signing-requests will be passed along for manual approve/reject. + +..attest the new file +```text +#sha256sum rules.js +2a0cb661dacfc804b6e95d935d813fd17c0997a7170e4092ffbc34ca976acd9f rules.js + +#./signer attest 2a0cb661dacfc804b6e95d935d813fd17c0997a7170e4092ffbc34ca976acd9f + +INFO [02-21|14:36:30] Ruleset attestation updated sha256=2a0cb661dacfc804b6e95d935d813fd17c0997a7170e4092ffbc34ca976acd9f +``` + +And start the signer: + +``` +#./signer --rules rules.js + +INFO [02-21|14:41:56] Using CLI as UI-channel +INFO [02-21|14:41:56] Loaded 4byte db signatures=5509 file=./4byte.json +INFO [02-21|14:41:56] Rule engine configured file=rules.js +DEBUG[02-21|14:41:56] FS scan times list=34.607µs set=4.509µs diff=4.87µs +DEBUG[02-21|14:41:56] Ledger support enabled +DEBUG[02-21|14:41:56] Trezor support enabled +INFO [02-21|14:41:56] Audit logs configured file=audit.log +INFO [02-21|14:41:56] HTTP endpoint opened url=http://localhost:8550 +------- Signer info ------- +* extapi_version : 2.0.0 +* intapi_version : 1.2.0 +* extapi_http : http://localhost:8550 +* extapi_ipc : +INFO [02-21|14:41:56] error occurred during execution error="ReferenceError: 'OnSignerStartup' is not defined" +``` +And then test signing, once with `bazonk` and once without: + +``` +#curl -H "Content-Type: application/json" -X POST --data "{\"jsonrpc\":\"2.0\",\"method\":\"account_sign\",\"params\":[\"0x694267f14675d7e1b9494fd8d72fefe1755710fa\",\"0x$(xxd -pu <<< ' bazonk baz gaz')\"],\"id\":67}" http://localhost:8550/ +{"jsonrpc":"2.0","id":67,"result":"0x93e6161840c3ae1efc26dc68dedab6e8fc233bb3fefa1b4645dbf6609b93dace160572ea4ab33240256bb6d3dadb60dcd9c515d6374d3cf614ee897408d41d541c"} + +#curl -H "Content-Type: application/json" -X POST --data "{\"jsonrpc\":\"2.0\",\"method\":\"account_sign\",\"params\":[\"0x694267f14675d7e1b9494fd8d72fefe1755710fa\",\"0x$(xxd -pu <<< ' bonk baz gaz')\"],\"id\":67}" http://localhost:8550/ +{"jsonrpc":"2.0","id":67,"error":{"code":-32000,"message":"Request denied"}} + +``` + +Meanwhile, in the signer output: +```text +INFO [02-21|14:42:41] Op approved +INFO [02-21|14:42:56] Op rejected +``` + +The signer also stores all traffic over the external API in a log file. The last 4 lines shows the two requests and their responses: + +```text +#tail audit.log -n 4 +t=2018-02-21T14:42:41+0100 lvl=info msg=Sign api=signer type=request metadata="{\"remote\":\"127.0.0.1:49706\",\"local\":\"localhost:8550\",\"scheme\":\"HTTP/1.1\"}" addr="0x694267f14675d7e1b9494fd8d72fefe1755710fa [chksum INVALID]" data=202062617a6f6e6b2062617a2067617a0a +t=2018-02-21T14:42:42+0100 lvl=info msg=Sign api=signer type=response data=93e6161840c3ae1efc26dc68dedab6e8fc233bb3fefa1b4645dbf6609b93dace160572ea4ab33240256bb6d3dadb60dcd9c515d6374d3cf614ee897408d41d541c error=nil +t=2018-02-21T14:42:56+0100 lvl=info msg=Sign api=signer type=request metadata="{\"remote\":\"127.0.0.1:49708\",\"local\":\"localhost:8550\",\"scheme\":\"HTTP/1.1\"}" addr="0x694267f14675d7e1b9494fd8d72fefe1755710fa [chksum INVALID]" data=2020626f6e6b2062617a2067617a0a +t=2018-02-21T14:42:56+0100 lvl=info msg=Sign api=signer type=response data= error="Request denied" +``` diff --git a/common/types.go b/common/types.go index 4ea2d56a69..76e7be58fe 100644 --- a/common/types.go +++ b/common/types.go @@ -23,8 +23,10 @@ import ( "math/rand" "reflect" + "encoding/json" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/crypto/sha3" + "strings" ) const ( @@ -238,3 +240,63 @@ func (a *UnprefixedAddress) UnmarshalText(input []byte) error { func (a UnprefixedAddress) MarshalText() ([]byte, error) { return []byte(hex.EncodeToString(a[:])), nil } + +// MixedcaseAddress retains the original string, which may or may not be +// correctly checksummed +type MixedcaseAddress struct { + addr Address + original string +} + +// NewMixedcaseAddress constructor (mainly for testing) +func NewMixedcaseAddress(addr Address) MixedcaseAddress { + return MixedcaseAddress{addr: addr, original: addr.Hex()} +} + +// NewMixedcaseAddressFromString is mainly meant for unit-testing +func NewMixedcaseAddressFromString(hexaddr string) (*MixedcaseAddress, error) { + if !IsHexAddress(hexaddr) { + return nil, fmt.Errorf("Invalid address") + } + a := FromHex(hexaddr) + return &MixedcaseAddress{addr: BytesToAddress(a), original: hexaddr}, nil +} + +// UnmarshalJSON parses MixedcaseAddress +func (ma *MixedcaseAddress) UnmarshalJSON(input []byte) error { + if err := hexutil.UnmarshalFixedJSON(addressT, input, ma.addr[:]); err != nil { + return err + } + return json.Unmarshal(input, &ma.original) +} + +// MarshalJSON marshals the original value +func (ma *MixedcaseAddress) MarshalJSON() ([]byte, error) { + if strings.HasPrefix(ma.original, "0x") || strings.HasPrefix(ma.original, "0X") { + return json.Marshal(fmt.Sprintf("0x%s", ma.original[2:])) + } + return json.Marshal(fmt.Sprintf("0x%s", ma.original)) +} + +// Address returns the address +func (ma *MixedcaseAddress) Address() Address { + return ma.addr +} + +// String implements fmt.Stringer +func (ma *MixedcaseAddress) String() string { + if ma.ValidChecksum() { + return fmt.Sprintf("%s [chksum ok]", ma.original) + } + return fmt.Sprintf("%s [chksum INVALID]", ma.original) +} + +// ValidChecksum returns true if the address has valid checksum +func (ma *MixedcaseAddress) ValidChecksum() bool { + return ma.original == ma.addr.Hex() +} + +// Original returns the mixed-case input string +func (ma *MixedcaseAddress) Original() string { + return ma.original +} diff --git a/common/types_test.go b/common/types_test.go index db636812ce..9e0c5be3ad 100644 --- a/common/types_test.go +++ b/common/types_test.go @@ -18,6 +18,7 @@ package common import ( "encoding/json" + "math/big" "strings" "testing" @@ -149,3 +150,46 @@ func BenchmarkAddressHex(b *testing.B) { testAddr.Hex() } } + +func TestMixedcaseAccount_Address(t *testing.T) { + + // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-55.md + // Note: 0X{checksum_addr} is not valid according to spec above + + var res []struct { + A MixedcaseAddress + Valid bool + } + if err := json.Unmarshal([]byte(`[ + {"A" : "0xae967917c465db8578ca9024c205720b1a3651A9", "Valid": false}, + {"A" : "0xAe967917c465db8578ca9024c205720b1a3651A9", "Valid": true}, + {"A" : "0XAe967917c465db8578ca9024c205720b1a3651A9", "Valid": false}, + {"A" : "0x1111111111111111111112222222222223333323", "Valid": true} + ]`), &res); err != nil { + t.Fatal(err) + } + + for _, r := range res { + if got := r.A.ValidChecksum(); got != r.Valid { + t.Errorf("Expected checksum %v, got checksum %v, input %v", r.Valid, got, r.A.String()) + } + } + + //These should throw exceptions: + var r2 []MixedcaseAddress + for _, r := range []string{ + `["0x11111111111111111111122222222222233333"]`, // Too short + `["0x111111111111111111111222222222222333332"]`, // Too short + `["0x11111111111111111111122222222222233333234"]`, // Too long + `["0x111111111111111111111222222222222333332344"]`, // Too long + `["1111111111111111111112222222222223333323"]`, // Missing 0x + `["x1111111111111111111112222222222223333323"]`, // Missing 0 + `["0xG111111111111111111112222222222223333323"]`, //Non-hex + } { + if err := json.Unmarshal([]byte(r), &r2); err == nil { + t.Errorf("Expected failure, input %v", r) + } + + } + +} diff --git a/node/node.go b/node/node.go index b02aecfad1..bf6e9a7c17 100644 --- a/node/node.go +++ b/node/node.go @@ -306,47 +306,23 @@ func (n *Node) startIPC(apis []rpc.API) error { // Short circuit if the IPC endpoint isn't being exposed if n.ipcEndpoint == "" { return nil + } - // Register all the APIs exposed by the services - handler := rpc.NewServer() - for _, api := range apis { - if err := handler.RegisterName(api.Namespace, api.Service); err != nil { - return err - } - n.log.Debug("IPC registered", "service", api.Service, "namespace", api.Namespace) - } - // All APIs registered, start the IPC listener - var ( - listener net.Listener - err error - ) - if listener, err = rpc.CreateIPCListener(n.ipcEndpoint); err != nil { + isClosed := func() bool { + n.lock.RLock() + defer n.lock.RUnlock() + return n.ipcListener == nil + } + + listener, handler, err := rpc.StartIPCEndpoint(isClosed, n.ipcEndpoint, apis) + if err != nil { return err } - go func() { - n.log.Info("IPC endpoint opened", "url", n.ipcEndpoint) - - for { - conn, err := listener.Accept() - if err != nil { - // Terminate if the listener was closed - n.lock.RLock() - closed := n.ipcListener == nil - n.lock.RUnlock() - if closed { - return - } - // Not closed, just some error; report and continue - n.log.Error("IPC accept failed", "err", err) - continue - } - go handler.ServeCodec(rpc.NewJSONCodec(conn), rpc.OptionMethodInvocation|rpc.OptionSubscriptions) - } - }() + // All listeners booted successfully n.ipcListener = listener n.ipcHandler = handler - + n.log.Info("IPC endpoint opened", "url", n.ipcEndpoint) return nil } @@ -370,30 +346,10 @@ func (n *Node) startHTTP(endpoint string, apis []rpc.API, modules []string, cors if endpoint == "" { return nil } - // Generate the whitelist based on the allowed modules - whitelist := make(map[string]bool) - for _, module := range modules { - whitelist[module] = true - } - // Register all the APIs exposed by the services - handler := rpc.NewServer() - for _, api := range apis { - if whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) { - if err := handler.RegisterName(api.Namespace, api.Service); err != nil { - return err - } - n.log.Debug("HTTP registered", "service", api.Service, "namespace", api.Namespace) - } - } - // All APIs registered, start the HTTP listener - var ( - listener net.Listener - err error - ) - if listener, err = net.Listen("tcp", endpoint); err != nil { + listener, handler, err := rpc.StartHTTPEndpoint(endpoint, apis, modules, cors, vhosts) + if err != nil { return err } - go rpc.NewHTTPServer(cors, vhosts, handler).Serve(listener) n.log.Info("HTTP endpoint opened", "url", fmt.Sprintf("http://%s", endpoint), "cors", strings.Join(cors, ","), "vhosts", strings.Join(vhosts, ",")) // All listeners booted successfully n.httpEndpoint = endpoint @@ -423,32 +379,11 @@ func (n *Node) startWS(endpoint string, apis []rpc.API, modules []string, wsOrig if endpoint == "" { return nil } - // Generate the whitelist based on the allowed modules - whitelist := make(map[string]bool) - for _, module := range modules { - whitelist[module] = true - } - // Register all the APIs exposed by the services - handler := rpc.NewServer() - for _, api := range apis { - if exposeAll || whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) { - if err := handler.RegisterName(api.Namespace, api.Service); err != nil { - return err - } - n.log.Debug("WebSocket registered", "service", api.Service, "namespace", api.Namespace) - } - } - // All APIs registered, start the HTTP listener - var ( - listener net.Listener - err error - ) - if listener, err = net.Listen("tcp", endpoint); err != nil { + listener, handler, err := rpc.StartWSEndpoint(endpoint, apis, modules, wsOrigins, exposeAll) + if err != nil { return err } - go rpc.NewWSServer(wsOrigins, handler).Serve(listener) n.log.Info("WebSocket endpoint opened", "url", fmt.Sprintf("ws://%s", listener.Addr())) - // All listeners booted successfully n.wsEndpoint = endpoint n.wsListener = listener diff --git a/rpc/client.go b/rpc/client.go index 8aa84ec982..68745c6cbe 100644 --- a/rpc/client.go +++ b/rpc/client.go @@ -33,6 +33,7 @@ import ( "time" "github.com/ethereum/go-ethereum/log" + "os" ) var ( @@ -171,6 +172,8 @@ func DialContext(ctx context.Context, rawurl string) (*Client, error) { return DialHTTP(rawurl) case "ws", "wss": return DialWebsocket(ctx, rawurl, "") + case "stdio": + return DialStdIO(ctx) case "": return DialIPC(ctx, rawurl) default: @@ -178,13 +181,51 @@ func DialContext(ctx context.Context, rawurl string) (*Client, error) { } } +type StdIOConn struct{} + +func (io StdIOConn) Read(b []byte) (n int, err error) { + return os.Stdin.Read(b) +} + +func (io StdIOConn) Write(b []byte) (n int, err error) { + return os.Stdout.Write(b) +} + +func (io StdIOConn) Close() error { + return nil +} + +func (io StdIOConn) LocalAddr() net.Addr { + return &net.UnixAddr{Name: "stdio", Net: "stdio"} +} + +func (io StdIOConn) RemoteAddr() net.Addr { + return &net.UnixAddr{Name: "stdio", Net: "stdio"} +} + +func (io StdIOConn) SetDeadline(t time.Time) error { + return &net.OpError{Op: "set", Net: "stdio", Source: nil, Addr: nil, Err: errors.New("deadline not supported")} +} + +func (io StdIOConn) SetReadDeadline(t time.Time) error { + return &net.OpError{Op: "set", Net: "stdio", Source: nil, Addr: nil, Err: errors.New("deadline not supported")} +} + +func (io StdIOConn) SetWriteDeadline(t time.Time) error { + return &net.OpError{Op: "set", Net: "stdio", Source: nil, Addr: nil, Err: errors.New("deadline not supported")} +} +func DialStdIO(ctx context.Context) (*Client, error) { + return newClient(ctx, func(_ context.Context) (net.Conn, error) { + return StdIOConn{}, nil + }) +} + func newClient(initctx context.Context, connectFunc func(context.Context) (net.Conn, error)) (*Client, error) { conn, err := connectFunc(initctx) if err != nil { return nil, err } _, isHTTP := conn.(*httpConn) - c := &Client{ writeConn: conn, isHTTP: isHTTP, @@ -524,13 +565,13 @@ func (c *Client) dispatch(conn net.Conn) { } case err := <-c.readErr: - log.Debug(fmt.Sprintf("<-readErr: %v", err)) + log.Debug("<-readErr", "err", err) c.closeRequestOps(err) conn.Close() reading = false case newconn := <-c.reconnected: - log.Debug(fmt.Sprintf("<-reconnected: (reading=%t) %v", reading, conn.RemoteAddr())) + log.Debug("<-reconnected", "reading", reading, "remote", conn.RemoteAddr()) if reading { // Wait for the previous read loop to exit. This is a rare case. conn.Close() @@ -587,7 +628,7 @@ func (c *Client) closeRequestOps(err error) { func (c *Client) handleNotification(msg *jsonrpcMessage) { if !strings.HasSuffix(msg.Method, notificationMethodSuffix) { - log.Debug(fmt.Sprint("dropping non-subscription message: ", msg)) + log.Debug("dropping non-subscription message", "msg", msg) return } var subResult struct { @@ -595,7 +636,7 @@ func (c *Client) handleNotification(msg *jsonrpcMessage) { Result json.RawMessage `json:"result"` } if err := json.Unmarshal(msg.Params, &subResult); err != nil { - log.Debug(fmt.Sprint("dropping invalid subscription message: ", msg)) + log.Debug("dropping invalid subscription message", "msg", msg) return } if c.subs[subResult.ID] != nil { @@ -606,7 +647,7 @@ func (c *Client) handleNotification(msg *jsonrpcMessage) { func (c *Client) handleResponse(msg *jsonrpcMessage) { op := c.respWait[string(msg.ID)] if op == nil { - log.Debug(fmt.Sprintf("unsolicited response %v", msg)) + log.Debug("unsolicited response", "msg", msg) return } delete(c.respWait, string(msg.ID)) diff --git a/rpc/endpoints.go b/rpc/endpoints.go new file mode 100644 index 0000000000..9ba2ed9707 --- /dev/null +++ b/rpc/endpoints.go @@ -0,0 +1,120 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "github.com/ethereum/go-ethereum/log" + "net" +) + +// StartHTTPEndpoint starts the HTTP RPC endpoint, configured with cors/vhosts/modules +func StartHTTPEndpoint(endpoint string, apis []API, modules []string, cors []string, vhosts []string) (net.Listener, *Server, error) { + // Generate the whitelist based on the allowed modules + whitelist := make(map[string]bool) + for _, module := range modules { + whitelist[module] = true + } + // Register all the APIs exposed by the services + handler := NewServer() + for _, api := range apis { + if whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) { + if err := handler.RegisterName(api.Namespace, api.Service); err != nil { + return nil, nil, err + } + log.Debug("HTTP registered", "namespace", api.Namespace) + } + } + // All APIs registered, start the HTTP listener + var ( + listener net.Listener + err error + ) + if listener, err = net.Listen("tcp", endpoint); err != nil { + return nil, nil, err + } + go NewHTTPServer(cors, vhosts, handler).Serve(listener) + return listener, handler, err +} + +// StartWSEndpoint starts a websocket endpoint +func StartWSEndpoint(endpoint string, apis []API, modules []string, wsOrigins []string, exposeAll bool) (net.Listener, *Server, error) { + + // Generate the whitelist based on the allowed modules + whitelist := make(map[string]bool) + for _, module := range modules { + whitelist[module] = true + } + // Register all the APIs exposed by the services + handler := NewServer() + for _, api := range apis { + if exposeAll || whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) { + if err := handler.RegisterName(api.Namespace, api.Service); err != nil { + return nil, nil, err + } + log.Debug("WebSocket registered", "service", api.Service, "namespace", api.Namespace) + } + } + // All APIs registered, start the HTTP listener + var ( + listener net.Listener + err error + ) + if listener, err = net.Listen("tcp", endpoint); err != nil { + return nil, nil, err + } + go NewWSServer(wsOrigins, handler).Serve(listener) + return listener, handler, err + +} + +// StartIPCEndpoint starts an IPC endpoint +func StartIPCEndpoint(isClosedFn func() bool, ipcEndpoint string, apis []API) (net.Listener, *Server, error) { + // Register all the APIs exposed by the services + handler := NewServer() + for _, api := range apis { + if err := handler.RegisterName(api.Namespace, api.Service); err != nil { + return nil, nil, err + } + log.Debug("IPC registered", "namespace", api.Namespace) + } + // All APIs registered, start the IPC listener + var ( + listener net.Listener + err error + ) + if listener, err = CreateIPCListener(ipcEndpoint); err != nil { + return nil, nil, err + } + go func() { + for { + conn, err := listener.Accept() + if err != nil { + // Terminate if the listener was closed + if isClosedFn() { + log.Info("IPC closed", "err", err) + } else { + // Not closed, just some error; report and continue + log.Error("IPC accept failed", "err", err) + } + continue + } + go handler.ServeCodec(NewJSONCodec(conn), OptionMethodInvocation|OptionSubscriptions) + } + }() + + return listener, handler, nil +} diff --git a/rpc/http.go b/rpc/http.go index e8f51150f4..14b6c1ab42 100644 --- a/rpc/http.go +++ b/rpc/http.go @@ -169,12 +169,17 @@ func (srv *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { // All checks passed, create a codec that reads direct from the request body // untilEOF and writes the response to w and order the server to process a // single request. + ctx := context.Background() + ctx = context.WithValue(ctx, "remote", r.RemoteAddr) + ctx = context.WithValue(ctx, "scheme", r.Proto) + ctx = context.WithValue(ctx, "local", r.Host) + body := io.LimitReader(r.Body, maxRequestContentLength) codec := NewJSONCodec(&httpReadWriteNopCloser{body, w}) defer codec.Close() w.Header().Set("content-type", contentType) - srv.ServeSingleRequest(codec, OptionMethodInvocation) + srv.ServeSingleRequest(codec, OptionMethodInvocation, ctx) } // validateRequest returns a non-zero response code and error message if the diff --git a/rpc/server.go b/rpc/server.go index 11373b504c..0f29035edb 100644 --- a/rpc/server.go +++ b/rpc/server.go @@ -125,7 +125,7 @@ func (s *Server) RegisterName(name string, rcvr interface{}) error { // If singleShot is true it will process a single request, otherwise it will handle // requests until the codec returns an error when reading a request (in most cases // an EOF). It executes requests in parallel when singleShot is false. -func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecOption) error { +func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecOption, ctx context.Context) error { var pend sync.WaitGroup defer func() { @@ -140,7 +140,8 @@ func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecO s.codecsMu.Unlock() }() - ctx, cancel := context.WithCancel(context.Background()) + // ctx, cancel := context.WithCancel(context.Background()) + ctx, cancel := context.WithCancel(ctx) defer cancel() // if the codec supports notification include a notifier that callbacks can use @@ -215,14 +216,14 @@ func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecO // stopped. In either case the codec is closed. func (s *Server) ServeCodec(codec ServerCodec, options CodecOption) { defer codec.Close() - s.serveRequest(codec, false, options) + s.serveRequest(codec, false, options, context.Background()) } // ServeSingleRequest reads and processes a single RPC request from the given codec. It will not // close the codec unless a non-recoverable error has occurred. Note, this method will return after // a single request has been processed! -func (s *Server) ServeSingleRequest(codec ServerCodec, options CodecOption) { - s.serveRequest(codec, true, options) +func (s *Server) ServeSingleRequest(codec ServerCodec, options CodecOption, ctx context.Context) { + s.serveRequest(codec, true, options, ctx) } // Stop will stop reading new requests, wait for stopPendingRequestTimeout to allow pending requests to finish, diff --git a/signer/core/abihelper.go b/signer/core/abihelper.go new file mode 100644 index 0000000000..2674c7346a --- /dev/null +++ b/signer/core/abihelper.go @@ -0,0 +1,256 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "encoding/json" + "fmt" + "io/ioutil" + "strings" + + "github.com/ethereum/go-ethereum/accounts/abi" + "github.com/ethereum/go-ethereum/common" + + "bytes" + "os" + "regexp" +) + +type decodedArgument struct { + soltype abi.Argument + value interface{} +} +type decodedCallData struct { + signature string + name string + inputs []decodedArgument +} + +// String implements stringer interface, tries to use the underlying value-type +func (arg decodedArgument) String() string { + var value string + switch arg.value.(type) { + case fmt.Stringer: + value = arg.value.(fmt.Stringer).String() + default: + value = fmt.Sprintf("%v", arg.value) + } + return fmt.Sprintf("%v: %v", arg.soltype.Type.String(), value) +} + +// String implements stringer interface for decodedCallData +func (cd decodedCallData) String() string { + args := make([]string, len(cd.inputs)) + for i, arg := range cd.inputs { + args[i] = arg.String() + } + return fmt.Sprintf("%s(%s)", cd.name, strings.Join(args, ",")) +} + +// parseCallData matches the provided call data against the abi definition, +// and returns a struct containing the actual go-typed values +func parseCallData(calldata []byte, abidata string) (*decodedCallData, error) { + + if len(calldata) < 4 { + return nil, fmt.Errorf("Invalid ABI-data, incomplete method signature of (%d bytes)", len(calldata)) + } + + sigdata, argdata := calldata[:4], calldata[4:] + if len(argdata)%32 != 0 { + return nil, fmt.Errorf("Not ABI-encoded data; length should be a multiple of 32 (was %d)", len(argdata)) + } + + abispec, err := abi.JSON(strings.NewReader(abidata)) + if err != nil { + return nil, fmt.Errorf("Failed parsing JSON ABI: %v, abidata: %v", err, abidata) + } + + method, err := abispec.MethodById(sigdata) + if err != nil { + return nil, err + } + + v, err := method.Inputs.UnpackValues(argdata) + if err != nil { + return nil, err + } + + decoded := decodedCallData{signature: method.Sig(), name: method.Name} + + for n, argument := range method.Inputs { + if err != nil { + return nil, fmt.Errorf("Failed to decode argument %d (signature %v): %v", n, method.Sig(), err) + } else { + decodedArg := decodedArgument{ + soltype: argument, + value: v[n], + } + decoded.inputs = append(decoded.inputs, decodedArg) + } + } + + // We're finished decoding the data. At this point, we encode the decoded data to see if it matches with the + // original data. If we didn't do that, it would e.g. be possible to stuff extra data into the arguments, which + // is not detected by merely decoding the data. + + var ( + encoded []byte + ) + encoded, err = method.Inputs.PackValues(v) + + if err != nil { + return nil, err + } + + if !bytes.Equal(encoded, argdata) { + was := common.Bytes2Hex(encoded) + exp := common.Bytes2Hex(argdata) + return nil, fmt.Errorf("WARNING: Supplied data is stuffed with extra data. \nWant %s\nHave %s\nfor method %v", exp, was, method.Sig()) + } + return &decoded, nil +} + +// MethodSelectorToAbi converts a method selector into an ABI struct. The returned data is a valid json string +// which can be consumed by the standard abi package. +func MethodSelectorToAbi(selector string) ([]byte, error) { + + re := regexp.MustCompile(`^([^\)]+)\(([a-z0-9,\[\]]*)\)`) + + type fakeArg struct { + Type string `json:"type"` + } + type fakeABI struct { + Name string `json:"name"` + Type string `json:"type"` + Inputs []fakeArg `json:"inputs"` + } + groups := re.FindStringSubmatch(selector) + if len(groups) != 3 { + return nil, fmt.Errorf("Did not match: %v (%v matches)", selector, len(groups)) + } + name := groups[1] + args := groups[2] + arguments := make([]fakeArg, 0) + if len(args) > 0 { + for _, arg := range strings.Split(args, ",") { + arguments = append(arguments, fakeArg{arg}) + } + } + abicheat := fakeABI{ + name, "function", arguments, + } + return json.Marshal([]fakeABI{abicheat}) + +} + +type AbiDb struct { + db map[string]string + customdb map[string]string + customdbPath string +} + +// NewEmptyAbiDB exists for test purposes +func NewEmptyAbiDB() (*AbiDb, error) { + return &AbiDb{make(map[string]string), make(map[string]string), ""}, nil +} + +// NewAbiDBFromFile loads signature database from file, and +// errors if the file is not valid json. Does no other validation of contents +func NewAbiDBFromFile(path string) (*AbiDb, error) { + raw, err := ioutil.ReadFile(path) + if err != nil { + return nil, err + } + db, err := NewEmptyAbiDB() + if err != nil { + return nil, err + } + json.Unmarshal(raw, &db.db) + return db, nil +} + +// NewAbiDBFromFiles loads both the standard signature database and a custom database. The latter will be used +// to write new values into if they are submitted via the API +func NewAbiDBFromFiles(standard, custom string) (*AbiDb, error) { + + db := &AbiDb{make(map[string]string), make(map[string]string), custom} + db.customdbPath = custom + + raw, err := ioutil.ReadFile(standard) + if err != nil { + return nil, err + } + json.Unmarshal(raw, &db.db) + // Custom file may not exist. Will be created during save, if needed + if _, err := os.Stat(custom); err == nil { + raw, err = ioutil.ReadFile(custom) + if err != nil { + return nil, err + } + json.Unmarshal(raw, &db.customdb) + } + + return db, nil +} + +// LookupMethodSelector checks the given 4byte-sequence against the known ABI methods. +// OBS: This method does not validate the match, it's assumed the caller will do so +func (db *AbiDb) LookupMethodSelector(id []byte) (string, error) { + if len(id) < 4 { + return "", fmt.Errorf("Expected 4-byte id, got %d", len(id)) + } + sig := common.ToHex(id[:4]) + if key, exists := db.db[sig]; exists { + return key, nil + } + if key, exists := db.customdb[sig]; exists { + return key, nil + } + return "", fmt.Errorf("Signature %v not found", sig) +} +func (db *AbiDb) Size() int { + return len(db.db) +} + +// saveCustomAbi saves a signature ephemerally. If custom file is used, also saves to disk +func (db *AbiDb) saveCustomAbi(selector, signature string) error { + db.customdb[signature] = selector + if db.customdbPath == "" { + return nil //Not an error per se, just not used + } + d, err := json.Marshal(db.customdb) + if err != nil { + return err + } + err = ioutil.WriteFile(db.customdbPath, d, 0600) + return err +} + +// Adds a signature to the database, if custom database saving is enabled. +// OBS: This method does _not_ validate the correctness of the data, +// it is assumed that the caller has already done so +func (db *AbiDb) AddSignature(selector string, data []byte) error { + if len(data) < 4 { + return nil + } + _, err := db.LookupMethodSelector(data[:4]) + if err == nil { + return nil + } + sig := common.ToHex(data[:4]) + return db.saveCustomAbi(selector, sig) +} diff --git a/signer/core/abihelper_test.go b/signer/core/abihelper_test.go new file mode 100644 index 0000000000..8bb5776691 --- /dev/null +++ b/signer/core/abihelper_test.go @@ -0,0 +1,247 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "fmt" + "strings" + "testing" + + "io/ioutil" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/accounts/abi" + "github.com/ethereum/go-ethereum/common" +) + +func verify(t *testing.T, jsondata, calldata string, exp []interface{}) { + + abispec, err := abi.JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + cd := common.Hex2Bytes(calldata) + sigdata, argdata := cd[:4], cd[4:] + method, err := abispec.MethodById(sigdata) + + if err != nil { + t.Fatal(err) + } + + data, err := method.Inputs.UnpackValues(argdata) + + if len(data) != len(exp) { + t.Fatalf("Mismatched length, expected %d, got %d", len(exp), len(data)) + } + for i, elem := range data { + if !reflect.DeepEqual(elem, exp[i]) { + t.Fatalf("Unpack error, arg %d, got %v, want %v", i, elem, exp[i]) + } + } +} +func TestNewUnpacker(t *testing.T) { + type unpackTest struct { + jsondata string + calldata string + exp []interface{} + } + testcases := []unpackTest{ + { // https://solidity.readthedocs.io/en/develop/abi-spec.html#use-of-dynamic-types + `[{"type":"function","name":"f", "inputs":[{"type":"uint256"},{"type":"uint32[]"},{"type":"bytes10"},{"type":"bytes"}]}]`, + // 0x123, [0x456, 0x789], "1234567890", "Hello, world!" + "8be65246" + "00000000000000000000000000000000000000000000000000000000000001230000000000000000000000000000000000000000000000000000000000000080313233343536373839300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000004560000000000000000000000000000000000000000000000000000000000000789000000000000000000000000000000000000000000000000000000000000000d48656c6c6f2c20776f726c642100000000000000000000000000000000000000", + []interface{}{ + big.NewInt(0x123), + []uint32{0x456, 0x789}, + [10]byte{49, 50, 51, 52, 53, 54, 55, 56, 57, 48}, + common.Hex2Bytes("48656c6c6f2c20776f726c6421"), + }, + }, { // https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI#examples + `[{"type":"function","name":"sam","inputs":[{"type":"bytes"},{"type":"bool"},{"type":"uint256[]"}]}]`, + // "dave", true and [1,2,3] + "a5643bf20000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000464617665000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003", + []interface{}{ + []byte{0x64, 0x61, 0x76, 0x65}, + true, + []*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)}, + }, + }, { + `[{"type":"function","name":"send","inputs":[{"type":"uint256"}]}]`, + "a52c101e0000000000000000000000000000000000000000000000000000000000000012", + []interface{}{big.NewInt(0x12)}, + }, { + `[{"type":"function","name":"compareAndApprove","inputs":[{"type":"address"},{"type":"uint256"},{"type":"uint256"}]}]`, + "751e107900000000000000000000000000000133700000deadbeef00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", + []interface{}{ + common.HexToAddress("0x00000133700000deadbeef000000000000000000"), + new(big.Int).SetBytes([]byte{0x00}), + big.NewInt(0x1), + }, + }, + } + for _, c := range testcases { + verify(t, c.jsondata, c.calldata, c.exp) + } + +} + +/* +func TestReflect(t *testing.T) { + a := big.NewInt(0) + b := new(big.Int).SetBytes([]byte{0x00}) + if !reflect.DeepEqual(a, b) { + t.Fatalf("Nope, %v != %v", a, b) + } +} +*/ + +func TestCalldataDecoding(t *testing.T) { + + // send(uint256) : a52c101e + // compareAndApprove(address,uint256,uint256) : 751e1079 + // issue(address[],uint256) : 42958b54 + jsondata := ` +[ + {"type":"function","name":"send","inputs":[{"name":"a","type":"uint256"}]}, + {"type":"function","name":"compareAndApprove","inputs":[{"name":"a","type":"address"},{"name":"a","type":"uint256"},{"name":"a","type":"uint256"}]}, + {"type":"function","name":"issue","inputs":[{"name":"a","type":"address[]"},{"name":"a","type":"uint256"}]}, + {"type":"function","name":"sam","inputs":[{"name":"a","type":"bytes"},{"name":"a","type":"bool"},{"name":"a","type":"uint256[]"}]} +]` + //Expected failures + for _, hexdata := range []string{ + "a52c101e00000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000042", + "a52c101e000000000000000000000000000000000000000000000000000000000000001200", + "a52c101e00000000000000000000000000000000000000000000000000000000000000", + "a52c101e", + "a52c10", + "", + // Too short + "751e10790000000000000000000000000000000000000000000000000000000000000012", + "751e1079FFffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + //Not valid multiple of 32 + "deadbeef00000000000000000000000000000000000000000000000000000000000000", + //Too short 'issue' + "42958b5400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000042", + // Too short compareAndApprove + "a52c101e00ff0000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000042", + // From https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI + // contains a bool with illegal values + "a5643bf20000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000001100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000464617665000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003", + } { + _, err := parseCallData(common.Hex2Bytes(hexdata), jsondata) + if err == nil { + t.Errorf("Expected decoding to fail: %s", hexdata) + } + } + + //Expected success + for _, hexdata := range []string{ + // From https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI + "a5643bf20000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000464617665000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003", + "a52c101e0000000000000000000000000000000000000000000000000000000000000012", + "a52c101eFFffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + "751e1079000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "42958b54" + + // start of dynamic type + "0000000000000000000000000000000000000000000000000000000000000040" + + //uint256 + "0000000000000000000000000000000000000000000000000000000000000001" + + // length of array + "0000000000000000000000000000000000000000000000000000000000000002" + + // array values + "000000000000000000000000000000000000000000000000000000000000dead" + + "000000000000000000000000000000000000000000000000000000000000beef", + } { + _, err := parseCallData(common.Hex2Bytes(hexdata), jsondata) + if err != nil { + t.Errorf("Unexpected failure on input %s:\n %v (%d bytes) ", hexdata, err, len(common.Hex2Bytes(hexdata))) + } + } +} + +func TestSelectorUnmarshalling(t *testing.T) { + var ( + db *AbiDb + err error + abistring []byte + abistruct abi.ABI + ) + + db, err = NewAbiDBFromFile("../../cmd/clef/4byte.json") + if err != nil { + t.Fatal(err) + } + fmt.Printf("DB size %v\n", db.Size()) + for id, selector := range db.db { + + abistring, err = MethodSelectorToAbi(selector) + if err != nil { + t.Error(err) + return + } + abistruct, err = abi.JSON(strings.NewReader(string(abistring))) + if err != nil { + t.Error(err) + return + } + m, err := abistruct.MethodById(common.Hex2Bytes(id[2:])) + if err != nil { + t.Error(err) + return + } + if m.Sig() != selector { + t.Errorf("Expected equality: %v != %v", m.Sig(), selector) + } + } + +} + +func TestCustomABI(t *testing.T) { + d, err := ioutil.TempDir("", "signer-4byte-test") + if err != nil { + t.Fatal(err) + } + filename := fmt.Sprintf("%s/4byte_custom.json", d) + abidb, err := NewAbiDBFromFiles("../../cmd/clef/4byte.json", filename) + if err != nil { + t.Fatal(err) + } + // Now we'll remove all existing signatures + abidb.db = make(map[string]string) + calldata := common.Hex2Bytes("a52c101edeadbeef") + _, err = abidb.LookupMethodSelector(calldata) + if err == nil { + t.Fatalf("Should not find a match on empty db") + } + if err = abidb.AddSignature("send(uint256)", calldata); err != nil { + t.Fatalf("Failed to save file: %v", err) + } + _, err = abidb.LookupMethodSelector(calldata) + if err != nil { + t.Fatalf("Should find a match for abi signature, got: %v", err) + } + //Check that it wrote to file + abidb2, err := NewAbiDBFromFile(filename) + if err != nil { + t.Fatalf("Failed to create new abidb: %v", err) + } + _, err = abidb2.LookupMethodSelector(calldata) + if err != nil { + t.Fatalf("Save failed: should find a match for abi signature after loading from disk") + } +} diff --git a/signer/core/api.go b/signer/core/api.go new file mode 100644 index 0000000000..1387041cc3 --- /dev/null +++ b/signer/core/api.go @@ -0,0 +1,500 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "io/ioutil" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/accounts" + "github.com/ethereum/go-ethereum/accounts/keystore" + "github.com/ethereum/go-ethereum/accounts/usbwallet" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// ExternalAPI defines the external API through which signing requests are made. +type ExternalAPI interface { + // List available accounts + List(ctx context.Context) (Accounts, error) + // New request to create a new account + New(ctx context.Context) (accounts.Account, error) + // SignTransaction request to sign the specified transaction + SignTransaction(ctx context.Context, args SendTxArgs, methodSelector *string) (*ethapi.SignTransactionResult, error) + // Sign - request to sign the given data (plus prefix) + Sign(ctx context.Context, addr common.MixedcaseAddress, data hexutil.Bytes) (hexutil.Bytes, error) + // EcRecover - request to perform ecrecover + EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) + // Export - request to export an account + Export(ctx context.Context, addr common.Address) (json.RawMessage, error) + // Import - request to import an account + Import(ctx context.Context, keyJSON json.RawMessage) (Account, error) +} + +// SignerUI specifies what method a UI needs to implement to be able to be used as a UI for the signer +type SignerUI interface { + // ApproveTx prompt the user for confirmation to request to sign Transaction + ApproveTx(request *SignTxRequest) (SignTxResponse, error) + // ApproveSignData prompt the user for confirmation to request to sign data + ApproveSignData(request *SignDataRequest) (SignDataResponse, error) + // ApproveExport prompt the user for confirmation to export encrypted Account json + ApproveExport(request *ExportRequest) (ExportResponse, error) + // ApproveImport prompt the user for confirmation to import Account json + ApproveImport(request *ImportRequest) (ImportResponse, error) + // ApproveListing prompt the user for confirmation to list accounts + // the list of accounts to list can be modified by the UI + ApproveListing(request *ListRequest) (ListResponse, error) + // ApproveNewAccount prompt the user for confirmation to create new Account, and reveal to caller + ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) + // ShowError displays error message to user + ShowError(message string) + // ShowInfo displays info message to user + ShowInfo(message string) + // OnApprovedTx notifies the UI about a transaction having been successfully signed. + // This method can be used by a UI to keep track of e.g. how much has been sent to a particular recipient. + OnApprovedTx(tx ethapi.SignTransactionResult) + // OnSignerStartup is invoked when the signer boots, and tells the UI info about external API location and version + // information + OnSignerStartup(info StartupInfo) +} + +// SignerAPI defines the actual implementation of ExternalAPI +type SignerAPI struct { + chainID *big.Int + am *accounts.Manager + UI SignerUI + validator *Validator +} + +// Metadata about a request +type Metadata struct { + Remote string `json:"remote"` + Local string `json:"local"` + Scheme string `json:"scheme"` +} + +// MetadataFromContext extracts Metadata from a given context.Context +func MetadataFromContext(ctx context.Context) Metadata { + m := Metadata{"NA", "NA", "NA"} // batman + + if v := ctx.Value("remote"); v != nil { + m.Remote = v.(string) + } + if v := ctx.Value("scheme"); v != nil { + m.Scheme = v.(string) + } + if v := ctx.Value("local"); v != nil { + m.Local = v.(string) + } + return m +} + +// String implements Stringer interface +func (m Metadata) String() string { + s, err := json.Marshal(m) + if err == nil { + return string(s) + } + return err.Error() +} + +// types for the requests/response types between signer and UI +type ( + // SignTxRequest contains info about a Transaction to sign + SignTxRequest struct { + Transaction SendTxArgs `json:"transaction"` + Callinfo []ValidationInfo `json:"call_info"` + Meta Metadata `json:"meta"` + } + // SignTxResponse result from SignTxRequest + SignTxResponse struct { + //The UI may make changes to the TX + Transaction SendTxArgs `json:"transaction"` + Approved bool `json:"approved"` + Password string `json:"password"` + } + // ExportRequest info about query to export accounts + ExportRequest struct { + Address common.Address `json:"address"` + Meta Metadata `json:"meta"` + } + // ExportResponse response to export-request + ExportResponse struct { + Approved bool `json:"approved"` + } + // ImportRequest info about request to import an Account + ImportRequest struct { + Meta Metadata `json:"meta"` + } + ImportResponse struct { + Approved bool `json:"approved"` + OldPassword string `json:"old_password"` + NewPassword string `json:"new_password"` + } + SignDataRequest struct { + Address common.MixedcaseAddress `json:"address"` + Rawdata hexutil.Bytes `json:"raw_data"` + Message string `json:"message"` + Hash hexutil.Bytes `json:"hash"` + Meta Metadata `json:"meta"` + } + SignDataResponse struct { + Approved bool `json:"approved"` + Password string + } + NewAccountRequest struct { + Meta Metadata `json:"meta"` + } + NewAccountResponse struct { + Approved bool `json:"approved"` + Password string `json:"password"` + } + ListRequest struct { + Accounts []Account `json:"accounts"` + Meta Metadata `json:"meta"` + } + ListResponse struct { + Accounts []Account `json:"accounts"` + } + Message struct { + Text string `json:"text"` + } + StartupInfo struct { + Info map[string]interface{} `json:"info"` + } +) + +var ErrRequestDenied = errors.New("Request denied") + +type errorWrapper struct { + msg string + err error +} + +func (ew errorWrapper) String() string { + return fmt.Sprintf("%s\n%s", ew.msg, ew.err) +} + +// NewSignerAPI creates a new API that can be used for Account management. +// ksLocation specifies the directory where to store the password protected private +// key that is generated when a new Account is created. +// noUSB disables USB support that is required to support hardware devices such as +// ledger and trezor. +func NewSignerAPI(chainID int64, ksLocation string, noUSB bool, ui SignerUI, abidb *AbiDb, lightKDF bool) *SignerAPI { + var ( + backends []accounts.Backend + n, p = keystore.StandardScryptN, keystore.StandardScryptP + ) + if lightKDF { + n, p = keystore.LightScryptN, keystore.LightScryptP + } + // support password based accounts + if len(ksLocation) > 0 { + backends = append(backends, keystore.NewKeyStore(ksLocation, n, p)) + } + if !noUSB { + // Start a USB hub for Ledger hardware wallets + if ledgerhub, err := usbwallet.NewLedgerHub(); err != nil { + log.Warn(fmt.Sprintf("Failed to start Ledger hub, disabling: %v", err)) + } else { + backends = append(backends, ledgerhub) + log.Debug("Ledger support enabled") + } + // Start a USB hub for Trezor hardware wallets + if trezorhub, err := usbwallet.NewTrezorHub(); err != nil { + log.Warn(fmt.Sprintf("Failed to start Trezor hub, disabling: %v", err)) + } else { + backends = append(backends, trezorhub) + log.Debug("Trezor support enabled") + } + } + return &SignerAPI{big.NewInt(chainID), accounts.NewManager(backends...), ui, NewValidator(abidb)} +} + +// List returns the set of wallet this signer manages. Each wallet can contain +// multiple accounts. +func (api *SignerAPI) List(ctx context.Context) (Accounts, error) { + var accs []Account + for _, wallet := range api.am.Wallets() { + for _, acc := range wallet.Accounts() { + acc := Account{Typ: "Account", URL: wallet.URL(), Address: acc.Address} + accs = append(accs, acc) + } + } + result, err := api.UI.ApproveListing(&ListRequest{Accounts: accs, Meta: MetadataFromContext(ctx)}) + if err != nil { + return nil, err + } + if result.Accounts == nil { + return nil, ErrRequestDenied + + } + return result.Accounts, nil +} + +// New creates a new password protected Account. The private key is protected with +// the given password. Users are responsible to backup the private key that is stored +// in the keystore location thas was specified when this API was created. +func (api *SignerAPI) New(ctx context.Context) (accounts.Account, error) { + be := api.am.Backends(keystore.KeyStoreType) + if len(be) == 0 { + return accounts.Account{}, errors.New("password based accounts not supported") + } + resp, err := api.UI.ApproveNewAccount(&NewAccountRequest{MetadataFromContext(ctx)}) + + if err != nil { + return accounts.Account{}, err + } + if !resp.Approved { + return accounts.Account{}, ErrRequestDenied + } + return be[0].(*keystore.KeyStore).NewAccount(resp.Password) +} + +// logDiff logs the difference between the incoming (original) transaction and the one returned from the signer. +// it also returns 'true' if the transaction was modified, to make it possible to configure the signer not to allow +// UI-modifications to requests +func logDiff(original *SignTxRequest, new *SignTxResponse) bool { + modified := false + if f0, f1 := original.Transaction.From, new.Transaction.From; !reflect.DeepEqual(f0, f1) { + log.Info("Sender-account changed by UI", "was", f0, "is", f1) + modified = true + } + if t0, t1 := original.Transaction.To, new.Transaction.To; !reflect.DeepEqual(t0, t1) { + log.Info("Recipient-account changed by UI", "was", t0, "is", t1) + modified = true + } + if g0, g1 := original.Transaction.Gas, new.Transaction.Gas; g0 != g1 { + modified = true + log.Info("Gas changed by UI", "was", g0, "is", g1) + } + if g0, g1 := big.Int(original.Transaction.GasPrice), big.Int(new.Transaction.GasPrice); g0.Cmp(&g1) != 0 { + modified = true + log.Info("GasPrice changed by UI", "was", g0, "is", g1) + } + if v0, v1 := big.Int(original.Transaction.Value), big.Int(new.Transaction.Value); v0.Cmp(&v1) != 0 { + modified = true + log.Info("Value changed by UI", "was", v0, "is", v1) + } + if d0, d1 := original.Transaction.Data, new.Transaction.Data; d0 != d1 { + d0s := "" + d1s := "" + if d0 != nil { + d0s = common.ToHex(*d0) + } + if d1 != nil { + d1s = common.ToHex(*d1) + } + if d1s != d0s { + modified = true + log.Info("Data changed by UI", "was", d0s, "is", d1s) + } + } + if n0, n1 := original.Transaction.Nonce, new.Transaction.Nonce; n0 != n1 { + modified = true + log.Info("Nonce changed by UI", "was", n0, "is", n1) + } + return modified +} + +// SignTransaction signs the given Transaction and returns it both as json and rlp-encoded form +func (api *SignerAPI) SignTransaction(ctx context.Context, args SendTxArgs, methodSelector *string) (*ethapi.SignTransactionResult, error) { + var ( + err error + result SignTxResponse + ) + msgs, err := api.validator.ValidateTransaction(&args, methodSelector) + if err != nil { + return nil, err + } + + req := SignTxRequest{ + Transaction: args, + Meta: MetadataFromContext(ctx), + Callinfo: msgs.Messages, + } + // Process approval + result, err = api.UI.ApproveTx(&req) + if err != nil { + return nil, err + } + if !result.Approved { + return nil, ErrRequestDenied + } + // Log changes made by the UI to the signing-request + logDiff(&req, &result) + var ( + acc accounts.Account + wallet accounts.Wallet + ) + acc = accounts.Account{Address: result.Transaction.From.Address()} + wallet, err = api.am.Find(acc) + if err != nil { + return nil, err + } + // Convert fields into a real transaction + var unsignedTx = result.Transaction.toTransaction() + + // The one to sign is the one that was returned from the UI + signedTx, err := wallet.SignTxWithPassphrase(acc, result.Password, unsignedTx, api.chainID) + if err != nil { + api.UI.ShowError(err.Error()) + return nil, err + } + + rlpdata, err := rlp.EncodeToBytes(signedTx) + response := ethapi.SignTransactionResult{Raw: rlpdata, Tx: signedTx} + + // Finally, send the signed tx to the UI + api.UI.OnApprovedTx(response) + // ...and to the external caller + return &response, nil + +} + +// Sign calculates an Ethereum ECDSA signature for: +// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message)) +// +// Note, the produced signature conforms to the secp256k1 curve R, S and V values, +// where the V value will be 27 or 28 for legacy reasons. +// +// The key used to calculate the signature is decrypted with the given password. +// +// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign +func (api *SignerAPI) Sign(ctx context.Context, addr common.MixedcaseAddress, data hexutil.Bytes) (hexutil.Bytes, error) { + sighash, msg := SignHash(data) + // We make the request prior to looking up if we actually have the account, to prevent + // account-enumeration via the API + req := &SignDataRequest{Address: addr, Rawdata: data, Message: msg, Hash: sighash, Meta: MetadataFromContext(ctx)} + res, err := api.UI.ApproveSignData(req) + + if err != nil { + return nil, err + } + if !res.Approved { + return nil, ErrRequestDenied + } + // Look up the wallet containing the requested signer + account := accounts.Account{Address: addr.Address()} + wallet, err := api.am.Find(account) + if err != nil { + return nil, err + } + // Assemble sign the data with the wallet + signature, err := wallet.SignHashWithPassphrase(account, res.Password, sighash) + if err != nil { + api.UI.ShowError(err.Error()) + return nil, err + } + signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper + return signature, nil +} + +// EcRecover returns the address for the Account that was used to create the signature. +// Note, this function is compatible with eth_sign and personal_sign. As such it recovers +// the address of: +// hash = keccak256("\x19Ethereum Signed Message:\n"${message length}${message}) +// addr = ecrecover(hash, signature) +// +// Note, the signature must conform to the secp256k1 curve R, S and V values, where +// the V value must be be 27 or 28 for legacy reasons. +// +// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecover +func (api *SignerAPI) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) { + if len(sig) != 65 { + return common.Address{}, fmt.Errorf("signature must be 65 bytes long") + } + if sig[64] != 27 && sig[64] != 28 { + return common.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)") + } + sig[64] -= 27 // Transform yellow paper V from 27/28 to 0/1 + hash, _ := SignHash(data) + rpk, err := crypto.Ecrecover(hash, sig) + if err != nil { + return common.Address{}, err + } + pubKey := crypto.ToECDSAPub(rpk) + recoveredAddr := crypto.PubkeyToAddress(*pubKey) + return recoveredAddr, nil +} + +// SignHash is a helper function that calculates a hash for the given message that can be +// safely used to calculate a signature from. +// +// The hash is calculated as +// keccak256("\x19Ethereum Signed Message:\n"${message length}${message}). +// +// This gives context to the signed message and prevents signing of transactions. +func SignHash(data []byte) ([]byte, string) { + msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), data) + return crypto.Keccak256([]byte(msg)), msg +} + +// Export returns encrypted private key associated with the given address in web3 keystore format. +func (api *SignerAPI) Export(ctx context.Context, addr common.Address) (json.RawMessage, error) { + res, err := api.UI.ApproveExport(&ExportRequest{Address: addr, Meta: MetadataFromContext(ctx)}) + + if err != nil { + return nil, err + } + if !res.Approved { + return nil, ErrRequestDenied + } + // Look up the wallet containing the requested signer + wallet, err := api.am.Find(accounts.Account{Address: addr}) + if err != nil { + return nil, err + } + if wallet.URL().Scheme != keystore.KeyStoreScheme { + return nil, fmt.Errorf("Account is not a keystore-account") + } + return ioutil.ReadFile(wallet.URL().Path) +} + +// Imports tries to import the given keyJSON in the local keystore. The keyJSON data is expected to be +// in web3 keystore format. It will decrypt the keyJSON with the given passphrase and on successful +// decryption it will encrypt the key with the given newPassphrase and store it in the keystore. +func (api *SignerAPI) Import(ctx context.Context, keyJSON json.RawMessage) (Account, error) { + be := api.am.Backends(keystore.KeyStoreType) + + if len(be) == 0 { + return Account{}, errors.New("password based accounts not supported") + } + res, err := api.UI.ApproveImport(&ImportRequest{Meta: MetadataFromContext(ctx)}) + + if err != nil { + return Account{}, err + } + if !res.Approved { + return Account{}, ErrRequestDenied + } + acc, err := be[0].(*keystore.KeyStore).Import(keyJSON, res.OldPassword, res.NewPassword) + if err != nil { + api.UI.ShowError(err.Error()) + return Account{}, err + } + return Account{Typ: "Account", URL: acc.URL, Address: acc.Address}, nil +} diff --git a/signer/core/api_test.go b/signer/core/api_test.go new file mode 100644 index 0000000000..50ad021987 --- /dev/null +++ b/signer/core/api_test.go @@ -0,0 +1,386 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// +package core + +import ( + "bytes" + "context" + "fmt" + "io/ioutil" + "math/big" + "os" + "path/filepath" + "testing" + "time" + + "github.com/ethereum/go-ethereum/accounts/keystore" + "github.com/ethereum/go-ethereum/cmd/utils" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/rlp" +) + +//Used for testing +type HeadlessUI struct { + controller chan string +} + +func (ui *HeadlessUI) OnSignerStartup(info StartupInfo) { +} + +func (ui *HeadlessUI) OnApprovedTx(tx ethapi.SignTransactionResult) { + fmt.Printf("OnApproved called") +} + +func (ui *HeadlessUI) ApproveTx(request *SignTxRequest) (SignTxResponse, error) { + + switch <-ui.controller { + case "Y": + return SignTxResponse{request.Transaction, true, <-ui.controller}, nil + case "M": //Modify + old := big.Int(request.Transaction.Value) + newVal := big.NewInt(0).Add(&old, big.NewInt(1)) + request.Transaction.Value = hexutil.Big(*newVal) + return SignTxResponse{request.Transaction, true, <-ui.controller}, nil + default: + return SignTxResponse{request.Transaction, false, ""}, nil + } +} +func (ui *HeadlessUI) ApproveSignData(request *SignDataRequest) (SignDataResponse, error) { + if "Y" == <-ui.controller { + return SignDataResponse{true, <-ui.controller}, nil + } + return SignDataResponse{false, ""}, nil +} +func (ui *HeadlessUI) ApproveExport(request *ExportRequest) (ExportResponse, error) { + + return ExportResponse{<-ui.controller == "Y"}, nil + +} +func (ui *HeadlessUI) ApproveImport(request *ImportRequest) (ImportResponse, error) { + + if "Y" == <-ui.controller { + return ImportResponse{true, <-ui.controller, <-ui.controller}, nil + } + return ImportResponse{false, "", ""}, nil +} +func (ui *HeadlessUI) ApproveListing(request *ListRequest) (ListResponse, error) { + + switch <-ui.controller { + case "A": + return ListResponse{request.Accounts}, nil + case "1": + l := make([]Account, 1) + l[0] = request.Accounts[1] + return ListResponse{l}, nil + default: + return ListResponse{nil}, nil + } +} +func (ui *HeadlessUI) ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) { + + if "Y" == <-ui.controller { + return NewAccountResponse{true, <-ui.controller}, nil + } + return NewAccountResponse{false, ""}, nil +} +func (ui *HeadlessUI) ShowError(message string) { + //stdout is used by communication + fmt.Fprint(os.Stderr, message) +} +func (ui *HeadlessUI) ShowInfo(message string) { + //stdout is used by communication + fmt.Fprint(os.Stderr, message) +} + +func tmpDirName(t *testing.T) string { + d, err := ioutil.TempDir("", "eth-keystore-test") + if err != nil { + t.Fatal(err) + } + d, err = filepath.EvalSymlinks(d) + if err != nil { + t.Fatal(err) + } + return d +} + +func setup(t *testing.T) (*SignerAPI, chan string) { + + controller := make(chan string, 10) + + db, err := NewAbiDBFromFile("../../cmd/clef/4byte.json") + if err != nil { + utils.Fatalf(err.Error()) + } + var ( + ui = &HeadlessUI{controller} + api = NewSignerAPI( + 1, + tmpDirName(t), + true, + ui, + db, + true) + ) + return api, controller +} +func createAccount(control chan string, api *SignerAPI, t *testing.T) { + + control <- "Y" + control <- "apassword" + _, err := api.New(context.Background()) + if err != nil { + t.Fatal(err) + } + // Some time to allow changes to propagate + time.Sleep(250 * time.Millisecond) +} +func failCreateAccount(control chan string, api *SignerAPI, t *testing.T) { + control <- "N" + acc, err := api.New(context.Background()) + if err != ErrRequestDenied { + t.Fatal(err) + } + if acc.Address != (common.Address{}) { + t.Fatal("Empty address should be returned") + } +} +func list(control chan string, api *SignerAPI, t *testing.T) []Account { + control <- "A" + list, err := api.List(context.Background()) + if err != nil { + t.Fatal(err) + } + return list +} + +func TestNewAcc(t *testing.T) { + + api, control := setup(t) + verifyNum := func(num int) { + if list := list(control, api, t); len(list) != num { + t.Errorf("Expected %d accounts, got %d", num, len(list)) + } + } + // Testing create and create-deny + createAccount(control, api, t) + createAccount(control, api, t) + failCreateAccount(control, api, t) + failCreateAccount(control, api, t) + createAccount(control, api, t) + failCreateAccount(control, api, t) + createAccount(control, api, t) + failCreateAccount(control, api, t) + verifyNum(4) + + // Testing listing: + // Listing one Account + control <- "1" + list, err := api.List(context.Background()) + if err != nil { + t.Fatal(err) + } + if len(list) != 1 { + t.Fatalf("List should only show one Account") + } + // Listing denied + control <- "Nope" + list, err = api.List(context.Background()) + if len(list) != 0 { + t.Fatalf("List should be empty") + } + if err != ErrRequestDenied { + t.Fatal("Expected deny") + } +} + +func TestSignData(t *testing.T) { + + api, control := setup(t) + //Create two accounts + createAccount(control, api, t) + createAccount(control, api, t) + control <- "1" + list, err := api.List(context.Background()) + if err != nil { + t.Fatal(err) + } + a := common.NewMixedcaseAddress(list[0].Address) + + control <- "Y" + control <- "wrongpassword" + h, err := api.Sign(context.Background(), a, []byte("EHLO world")) + if h != nil { + t.Errorf("Expected nil-data, got %x", h) + } + if err != keystore.ErrDecrypt { + t.Errorf("Expected ErrLocked! %v", err) + } + + control <- "No way" + h, err = api.Sign(context.Background(), a, []byte("EHLO world")) + if h != nil { + t.Errorf("Expected nil-data, got %x", h) + } + if err != ErrRequestDenied { + t.Errorf("Expected ErrRequestDenied! %v", err) + } + + control <- "Y" + control <- "apassword" + h, err = api.Sign(context.Background(), a, []byte("EHLO world")) + + if err != nil { + t.Fatal(err) + } + if h == nil || len(h) != 65 { + t.Errorf("Expected 65 byte signature (got %d bytes)", len(h)) + } +} +func mkTestTx(from common.MixedcaseAddress) SendTxArgs { + to := common.NewMixedcaseAddress(common.HexToAddress("0x1337")) + gas := hexutil.Uint64(21000) + gasPrice := (hexutil.Big)(*big.NewInt(2000000000)) + value := (hexutil.Big)(*big.NewInt(1e18)) + nonce := (hexutil.Uint64)(0) + data := hexutil.Bytes(common.Hex2Bytes("01020304050607080a")) + tx := SendTxArgs{ + From: from, + To: &to, + Gas: gas, + GasPrice: gasPrice, + Value: value, + Data: &data, + Nonce: nonce} + return tx +} + +func TestSignTx(t *testing.T) { + + var ( + list Accounts + res, res2 *ethapi.SignTransactionResult + err error + ) + + api, control := setup(t) + createAccount(control, api, t) + control <- "A" + list, err = api.List(context.Background()) + if err != nil { + t.Fatal(err) + } + a := common.NewMixedcaseAddress(list[0].Address) + + methodSig := "test(uint)" + tx := mkTestTx(a) + + control <- "Y" + control <- "wrongpassword" + res, err = api.SignTransaction(context.Background(), tx, &methodSig) + if res != nil { + t.Errorf("Expected nil-response, got %v", res) + } + if err != keystore.ErrDecrypt { + t.Errorf("Expected ErrLocked! %v", err) + } + + control <- "No way" + res, err = api.SignTransaction(context.Background(), tx, &methodSig) + if res != nil { + t.Errorf("Expected nil-response, got %v", res) + } + if err != ErrRequestDenied { + t.Errorf("Expected ErrRequestDenied! %v", err) + } + + control <- "Y" + control <- "apassword" + res, err = api.SignTransaction(context.Background(), tx, &methodSig) + + if err != nil { + t.Fatal(err) + } + parsedTx := &types.Transaction{} + rlp.Decode(bytes.NewReader(res.Raw), parsedTx) + //The tx should NOT be modified by the UI + if parsedTx.Value().Cmp(tx.Value.ToInt()) != 0 { + t.Errorf("Expected value to be unchanged, expected %v got %v", tx.Value, parsedTx.Value()) + } + control <- "Y" + control <- "apassword" + + res2, err = api.SignTransaction(context.Background(), tx, &methodSig) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(res.Raw, res2.Raw) { + t.Error("Expected tx to be unmodified by UI") + } + + //The tx is modified by the UI + control <- "M" + control <- "apassword" + + res2, err = api.SignTransaction(context.Background(), tx, &methodSig) + if err != nil { + t.Fatal(err) + } + + parsedTx2 := &types.Transaction{} + rlp.Decode(bytes.NewReader(res.Raw), parsedTx2) + //The tx should be modified by the UI + if parsedTx2.Value().Cmp(tx.Value.ToInt()) != 0 { + t.Errorf("Expected value to be unchanged, got %v", parsedTx.Value()) + } + + if bytes.Equal(res.Raw, res2.Raw) { + t.Error("Expected tx to be modified by UI") + } + +} + +/* +func TestAsyncronousResponses(t *testing.T){ + + //Set up one account + api, control := setup(t) + createAccount(control, api, t) + + // Two transactions, the second one with larger value than the first + tx1 := mkTestTx() + newVal := big.NewInt(0).Add((*big.Int) (tx1.Value), big.NewInt(1)) + tx2 := mkTestTx() + tx2.Value = (*hexutil.Big)(newVal) + + control <- "W" //wait + control <- "Y" // + control <- "apassword" + control <- "Y" // + control <- "apassword" + + var err error + + h1, err := api.SignTransaction(context.Background(), common.HexToAddress("1111"), tx1, nil) + h2, err := api.SignTransaction(context.Background(), common.HexToAddress("2222"), tx2, nil) + + + } +*/ diff --git a/signer/core/auditlog.go b/signer/core/auditlog.go new file mode 100644 index 0000000000..d0ba733d2f --- /dev/null +++ b/signer/core/auditlog.go @@ -0,0 +1,110 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "context" + + "encoding/json" + + "github.com/ethereum/go-ethereum/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" +) + +type AuditLogger struct { + log log.Logger + api ExternalAPI +} + +func (l *AuditLogger) List(ctx context.Context) (Accounts, error) { + l.log.Info("List", "type", "request", "metadata", MetadataFromContext(ctx).String()) + res, e := l.api.List(ctx) + + l.log.Info("List", "type", "response", "data", res.String()) + + return res, e +} + +func (l *AuditLogger) New(ctx context.Context) (accounts.Account, error) { + return l.api.New(ctx) +} + +func (l *AuditLogger) SignTransaction(ctx context.Context, args SendTxArgs, methodSelector *string) (*ethapi.SignTransactionResult, error) { + sel := "" + if methodSelector != nil { + sel = *methodSelector + } + l.log.Info("SignTransaction", "type", "request", "metadata", MetadataFromContext(ctx).String(), + "tx", args.String(), + "methodSelector", sel) + + res, e := l.api.SignTransaction(ctx, args, methodSelector) + if res != nil { + l.log.Info("SignTransaction", "type", "response", "data", common.Bytes2Hex(res.Raw), "error", e) + } else { + l.log.Info("SignTransaction", "type", "response", "data", res, "error", e) + } + return res, e +} + +func (l *AuditLogger) Sign(ctx context.Context, addr common.MixedcaseAddress, data hexutil.Bytes) (hexutil.Bytes, error) { + l.log.Info("Sign", "type", "request", "metadata", MetadataFromContext(ctx).String(), + "addr", addr.String(), "data", common.Bytes2Hex(data)) + b, e := l.api.Sign(ctx, addr, data) + l.log.Info("Sign", "type", "response", "data", common.Bytes2Hex(b), "error", e) + return b, e +} + +func (l *AuditLogger) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) { + l.log.Info("EcRecover", "type", "request", "metadata", MetadataFromContext(ctx).String(), + "data", common.Bytes2Hex(data)) + a, e := l.api.EcRecover(ctx, data, sig) + l.log.Info("EcRecover", "type", "response", "addr", a.String(), "error", e) + return a, e +} + +func (l *AuditLogger) Export(ctx context.Context, addr common.Address) (json.RawMessage, error) { + l.log.Info("Export", "type", "request", "metadata", MetadataFromContext(ctx).String(), + "addr", addr.Hex()) + j, e := l.api.Export(ctx, addr) + // In this case, we don't actually log the json-response, which may be extra sensitive + l.log.Info("Export", "type", "response", "json response size", len(j), "error", e) + return j, e +} + +func (l *AuditLogger) Import(ctx context.Context, keyJSON json.RawMessage) (Account, error) { + // Don't actually log the json contents + l.log.Info("Import", "type", "request", "metadata", MetadataFromContext(ctx).String(), + "keyJSON size", len(keyJSON)) + a, e := l.api.Import(ctx, keyJSON) + l.log.Info("Import", "type", "response", "addr", a.String(), "error", e) + return a, e +} + +func NewAuditLogger(path string, api ExternalAPI) (*AuditLogger, error) { + l := log.New("api", "signer") + handler, err := log.FileHandler(path, log.LogfmtFormat()) + if err != nil { + return nil, err + } + l.SetHandler(handler) + l.Info("Configured", "audit log", path) + return &AuditLogger{l, api}, nil +} diff --git a/signer/core/cliui.go b/signer/core/cliui.go new file mode 100644 index 0000000000..0d9b5f3d36 --- /dev/null +++ b/signer/core/cliui.go @@ -0,0 +1,247 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +package core + +import ( + "bufio" + "fmt" + "os" + "strings" + + "sync" + + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" + "golang.org/x/crypto/ssh/terminal" +) + +type CommandlineUI struct { + in *bufio.Reader + mu sync.Mutex +} + +func NewCommandlineUI() *CommandlineUI { + return &CommandlineUI{in: bufio.NewReader(os.Stdin)} +} + +// readString reads a single line from stdin, trimming if from spaces, enforcing +// non-emptyness. +func (ui *CommandlineUI) readString() string { + for { + fmt.Printf("> ") + text, err := ui.in.ReadString('\n') + if err != nil { + log.Crit("Failed to read user input", "err", err) + } + if text = strings.TrimSpace(text); text != "" { + return text + } + } +} + +// readPassword reads a single line from stdin, trimming it from the trailing new +// line and returns it. The input will not be echoed. +func (ui *CommandlineUI) readPassword() string { + fmt.Printf("Enter password to approve:\n") + fmt.Printf("> ") + + text, err := terminal.ReadPassword(int(os.Stdin.Fd())) + if err != nil { + log.Crit("Failed to read password", "err", err) + } + fmt.Println() + fmt.Println("-----------------------") + return string(text) +} + +// readPassword reads a single line from stdin, trimming it from the trailing new +// line and returns it. The input will not be echoed. +func (ui *CommandlineUI) readPasswordText(inputstring string) string { + fmt.Printf("Enter %s:\n", inputstring) + fmt.Printf("> ") + text, err := terminal.ReadPassword(int(os.Stdin.Fd())) + if err != nil { + log.Crit("Failed to read password", "err", err) + } + fmt.Println("-----------------------") + return string(text) +} + +// confirm returns true if user enters 'Yes', otherwise false +func (ui *CommandlineUI) confirm() bool { + fmt.Printf("Approve? [y/N]:\n") + if ui.readString() == "y" { + return true + } + fmt.Println("-----------------------") + return false +} + +func showMetadata(metadata Metadata) { + fmt.Printf("Request context:\n\t%v -> %v -> %v\n", metadata.Remote, metadata.Scheme, metadata.Local) +} + +// ApproveTx prompt the user for confirmation to request to sign Transaction +func (ui *CommandlineUI) ApproveTx(request *SignTxRequest) (SignTxResponse, error) { + ui.mu.Lock() + defer ui.mu.Unlock() + weival := request.Transaction.Value.ToInt() + fmt.Printf("--------- Transaction request-------------\n") + if to := request.Transaction.To; to != nil { + fmt.Printf("to: %v\n", to.Original()) + if !to.ValidChecksum() { + fmt.Printf("\nWARNING: Invalid checksum on to-address!\n\n") + } + } else { + fmt.Printf("to: \n") + } + fmt.Printf("from: %v\n", request.Transaction.From.String()) + fmt.Printf("value: %v wei\n", weival) + if request.Transaction.Data != nil { + d := *request.Transaction.Data + if len(d) > 0 { + fmt.Printf("data: %v\n", common.Bytes2Hex(d)) + } + } + if request.Callinfo != nil { + fmt.Printf("\nTransaction validation:\n") + for _, m := range request.Callinfo { + fmt.Printf(" * %s : %s", m.Typ, m.Message) + } + fmt.Println() + + } + fmt.Printf("\n") + showMetadata(request.Meta) + fmt.Printf("-------------------------------------------\n") + if !ui.confirm() { + return SignTxResponse{request.Transaction, false, ""}, nil + } + return SignTxResponse{request.Transaction, true, ui.readPassword()}, nil +} + +// ApproveSignData prompt the user for confirmation to request to sign data +func (ui *CommandlineUI) ApproveSignData(request *SignDataRequest) (SignDataResponse, error) { + ui.mu.Lock() + defer ui.mu.Unlock() + + fmt.Printf("-------- Sign data request--------------\n") + fmt.Printf("Account: %s\n", request.Address.String()) + fmt.Printf("message: \n%q\n", request.Message) + fmt.Printf("raw data: \n%v\n", request.Rawdata) + fmt.Printf("message hash: %v\n", request.Hash) + fmt.Printf("-------------------------------------------\n") + showMetadata(request.Meta) + if !ui.confirm() { + return SignDataResponse{false, ""}, nil + } + return SignDataResponse{true, ui.readPassword()}, nil +} + +// ApproveExport prompt the user for confirmation to export encrypted Account json +func (ui *CommandlineUI) ApproveExport(request *ExportRequest) (ExportResponse, error) { + ui.mu.Lock() + defer ui.mu.Unlock() + + fmt.Printf("-------- Export Account request--------------\n") + fmt.Printf("A request has been made to export the (encrypted) keyfile\n") + fmt.Printf("Approving this operation means that the caller obtains the (encrypted) contents\n") + fmt.Printf("\n") + fmt.Printf("Account: %x\n", request.Address) + //fmt.Printf("keyfile: \n%v\n", request.file) + fmt.Printf("-------------------------------------------\n") + showMetadata(request.Meta) + return ExportResponse{ui.confirm()}, nil +} + +// ApproveImport prompt the user for confirmation to import Account json +func (ui *CommandlineUI) ApproveImport(request *ImportRequest) (ImportResponse, error) { + ui.mu.Lock() + defer ui.mu.Unlock() + + fmt.Printf("-------- Import Account request--------------\n") + fmt.Printf("A request has been made to import an encrypted keyfile\n") + fmt.Printf("-------------------------------------------\n") + showMetadata(request.Meta) + if !ui.confirm() { + return ImportResponse{false, "", ""}, nil + } + return ImportResponse{true, ui.readPasswordText("Old password"), ui.readPasswordText("New password")}, nil +} + +// ApproveListing prompt the user for confirmation to list accounts +// the list of accounts to list can be modified by the UI +func (ui *CommandlineUI) ApproveListing(request *ListRequest) (ListResponse, error) { + + ui.mu.Lock() + defer ui.mu.Unlock() + + fmt.Printf("-------- List Account request--------------\n") + fmt.Printf("A request has been made to list all accounts. \n") + fmt.Printf("You can select which accounts the caller can see\n") + for _, account := range request.Accounts { + fmt.Printf("\t[x] %v\n", account.Address.Hex()) + } + fmt.Printf("-------------------------------------------\n") + showMetadata(request.Meta) + if !ui.confirm() { + return ListResponse{nil}, nil + } + return ListResponse{request.Accounts}, nil +} + +// ApproveNewAccount prompt the user for confirmation to create new Account, and reveal to caller +func (ui *CommandlineUI) ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) { + + ui.mu.Lock() + defer ui.mu.Unlock() + + fmt.Printf("-------- New Account request--------------\n") + fmt.Printf("A request has been made to create a new. \n") + fmt.Printf("Approving this operation means that a new Account is created,\n") + fmt.Printf("and the address show to the caller\n") + showMetadata(request.Meta) + if !ui.confirm() { + return NewAccountResponse{false, ""}, nil + } + return NewAccountResponse{true, ui.readPassword()}, nil +} + +// ShowError displays error message to user +func (ui *CommandlineUI) ShowError(message string) { + + fmt.Printf("ERROR: %v\n", message) +} + +// ShowInfo displays info message to user +func (ui *CommandlineUI) ShowInfo(message string) { + fmt.Printf("Info: %v\n", message) +} + +func (ui *CommandlineUI) OnApprovedTx(tx ethapi.SignTransactionResult) { + fmt.Printf("Transaction signed:\n ") + spew.Dump(tx.Tx) +} + +func (ui *CommandlineUI) OnSignerStartup(info StartupInfo) { + + fmt.Printf("------- Signer info -------\n") + for k, v := range info.Info { + fmt.Printf("* %v : %v\n", k, v) + } +} diff --git a/signer/core/stdioui.go b/signer/core/stdioui.go new file mode 100644 index 0000000000..5640ed03bd --- /dev/null +++ b/signer/core/stdioui.go @@ -0,0 +1,113 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// + +package core + +import ( + "context" + "sync" + + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rpc" +) + +type StdIOUI struct { + client rpc.Client + mu sync.Mutex +} + +func NewStdIOUI() *StdIOUI { + log.Info("NewStdIOUI") + client, err := rpc.DialContext(context.Background(), "stdio://") + if err != nil { + log.Crit("Could not create stdio client", "err", err) + } + return &StdIOUI{client: *client} +} + +// dispatch sends a request over the stdio +func (ui *StdIOUI) dispatch(serviceMethod string, args interface{}, reply interface{}) error { + err := ui.client.Call(&reply, serviceMethod, args) + if err != nil { + log.Info("Error", "exc", err.Error()) + } + return err +} + +func (ui *StdIOUI) ApproveTx(request *SignTxRequest) (SignTxResponse, error) { + var result SignTxResponse + err := ui.dispatch("ApproveTx", request, &result) + return result, err +} + +func (ui *StdIOUI) ApproveSignData(request *SignDataRequest) (SignDataResponse, error) { + var result SignDataResponse + err := ui.dispatch("ApproveSignData", request, &result) + return result, err +} + +func (ui *StdIOUI) ApproveExport(request *ExportRequest) (ExportResponse, error) { + var result ExportResponse + err := ui.dispatch("ApproveExport", request, &result) + return result, err +} + +func (ui *StdIOUI) ApproveImport(request *ImportRequest) (ImportResponse, error) { + var result ImportResponse + err := ui.dispatch("ApproveImport", request, &result) + return result, err +} + +func (ui *StdIOUI) ApproveListing(request *ListRequest) (ListResponse, error) { + var result ListResponse + err := ui.dispatch("ApproveListing", request, &result) + return result, err +} + +func (ui *StdIOUI) ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) { + var result NewAccountResponse + err := ui.dispatch("ApproveNewAccount", request, &result) + return result, err +} + +func (ui *StdIOUI) ShowError(message string) { + err := ui.dispatch("ShowError", &Message{message}, nil) + if err != nil { + log.Info("Error calling 'ShowError'", "exc", err.Error(), "msg", message) + } +} + +func (ui *StdIOUI) ShowInfo(message string) { + err := ui.dispatch("ShowInfo", Message{message}, nil) + if err != nil { + log.Info("Error calling 'ShowInfo'", "exc", err.Error(), "msg", message) + } +} +func (ui *StdIOUI) OnApprovedTx(tx ethapi.SignTransactionResult) { + err := ui.dispatch("OnApprovedTx", tx, nil) + if err != nil { + log.Info("Error calling 'OnApprovedTx'", "exc", err.Error(), "tx", tx) + } +} + +func (ui *StdIOUI) OnSignerStartup(info StartupInfo) { + err := ui.dispatch("OnSignerStartup", info, nil) + if err != nil { + log.Info("Error calling 'OnSignerStartup'", "exc", err.Error(), "info", info) + } +} diff --git a/signer/core/types.go b/signer/core/types.go new file mode 100644 index 0000000000..8386bd44e7 --- /dev/null +++ b/signer/core/types.go @@ -0,0 +1,95 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "encoding/json" + "strings" + + "math/big" + + "github.com/ethereum/go-ethereum/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core/types" +) + +type Accounts []Account + +func (as Accounts) String() string { + var output []string + for _, a := range as { + output = append(output, a.String()) + } + return strings.Join(output, "\n") +} + +type Account struct { + Typ string `json:"type"` + URL accounts.URL `json:"url"` + Address common.Address `json:"address"` +} + +func (a Account) String() string { + s, err := json.Marshal(a) + if err == nil { + return string(s) + } + return err.Error() +} + +type ValidationInfo struct { + Typ string `json:"type"` + Message string `json:"message"` +} +type ValidationMessages struct { + Messages []ValidationInfo +} + +// SendTxArgs represents the arguments to submit a transaction +type SendTxArgs struct { + From common.MixedcaseAddress `json:"from"` + To *common.MixedcaseAddress `json:"to"` + Gas hexutil.Uint64 `json:"gas"` + GasPrice hexutil.Big `json:"gasPrice"` + Value hexutil.Big `json:"value"` + Nonce hexutil.Uint64 `json:"nonce"` + // We accept "data" and "input" for backwards-compatibility reasons. + Data *hexutil.Bytes `json:"data"` + Input *hexutil.Bytes `json:"input"` +} + +func (t SendTxArgs) String() string { + s, err := json.Marshal(t) + if err == nil { + return string(s) + } + return err.Error() +} + +func (args *SendTxArgs) toTransaction() *types.Transaction { + var input []byte + if args.Data != nil { + input = *args.Data + } else if args.Input != nil { + input = *args.Input + } + if args.To == nil { + return types.NewContractCreation(uint64(args.Nonce), (*big.Int)(&args.Value), uint64(args.Gas), (*big.Int)(&args.GasPrice), input) + } + return types.NewTransaction(uint64(args.Nonce), args.To.Address(), (*big.Int)(&args.Value), (uint64)(args.Gas), (*big.Int)(&args.GasPrice), input) +} diff --git a/signer/core/validation.go b/signer/core/validation.go new file mode 100644 index 0000000000..97bb3b6850 --- /dev/null +++ b/signer/core/validation.go @@ -0,0 +1,163 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "bytes" + "errors" + "fmt" + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +// The validation package contains validation checks for transactions +// - ABI-data validation +// - Transaction semantics validation +// The package provides warnings for typical pitfalls + +func (vs *ValidationMessages) crit(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{"CRITICAL", msg}) +} +func (vs *ValidationMessages) warn(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{"WARNING", msg}) +} +func (vs *ValidationMessages) info(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{"Info", msg}) +} + +type Validator struct { + db *AbiDb +} + +func NewValidator(db *AbiDb) *Validator { + return &Validator{db} +} +func testSelector(selector string, data []byte) (*decodedCallData, error) { + if selector == "" { + return nil, fmt.Errorf("selector not found") + } + abiData, err := MethodSelectorToAbi(selector) + if err != nil { + return nil, err + } + info, err := parseCallData(data, string(abiData)) + if err != nil { + return nil, err + } + return info, nil + +} + +// validateCallData checks if the ABI-data + methodselector (if given) can be parsed and seems to match +func (v *Validator) validateCallData(msgs *ValidationMessages, data []byte, methodSelector *string) { + if len(data) == 0 { + return + } + if len(data) < 4 { + msgs.warn("Tx contains data which is not valid ABI") + return + } + var ( + info *decodedCallData + err error + ) + // Check the provided one + if methodSelector != nil { + info, err = testSelector(*methodSelector, data) + if err != nil { + msgs.warn(fmt.Sprintf("Tx contains data, but provided ABI signature could not be matched: %v", err)) + } else { + msgs.info(info.String()) + //Successfull match. add to db if not there already (ignore errors there) + v.db.AddSignature(*methodSelector, data[:4]) + } + return + } + // Check the db + selector, err := v.db.LookupMethodSelector(data[:4]) + if err != nil { + msgs.warn(fmt.Sprintf("Tx contains data, but the ABI signature could not be found: %v", err)) + return + } + info, err = testSelector(selector, data) + if err != nil { + msgs.warn(fmt.Sprintf("Tx contains data, but provided ABI signature could not be matched: %v", err)) + } else { + msgs.info(info.String()) + } +} + +// validateSemantics checks if the transactions 'makes sense', and generate warnings for a couple of typical scenarios +func (v *Validator) validate(msgs *ValidationMessages, txargs *SendTxArgs, methodSelector *string) error { + // Prevent accidental erroneous usage of both 'input' and 'data' + if txargs.Data != nil && txargs.Input != nil && !bytes.Equal(*txargs.Data, *txargs.Input) { + // This is a showstopper + return errors.New(`Ambiguous request: both "data" and "input" are set and are not identical`) + } + var ( + data []byte + ) + // Place data on 'data', and nil 'input' + if txargs.Input != nil { + txargs.Data = txargs.Input + txargs.Input = nil + } + if txargs.Data != nil { + data = *txargs.Data + } + + if txargs.To == nil { + //Contract creation should contain sufficient data to deploy a contract + // A typical error is omitting sender due to some quirk in the javascript call + // e.g. https://github.com/ethereum/go-ethereum/issues/16106 + if len(data) == 0 { + if txargs.Value.ToInt().Cmp(big.NewInt(0)) > 0 { + // Sending ether into black hole + return errors.New(`Tx will create contract with value but empty code!`) + } + // No value submitted at least + msgs.crit("Tx will create contract with empty code!") + } else if len(data) < 40 { //Arbitrary limit + msgs.warn(fmt.Sprintf("Tx will will create contract, but payload is suspiciously small (%d b)", len(data))) + } + // methodSelector should be nil for contract creation + if methodSelector != nil { + msgs.warn("Tx will create contract, but method selector supplied; indicating intent to call a method.") + } + + } else { + if !txargs.To.ValidChecksum() { + msgs.warn("Invalid checksum on to-address") + } + // Normal transaction + if bytes.Equal(txargs.To.Address().Bytes(), common.Address{}.Bytes()) { + // Sending to 0 + msgs.crit("Tx destination is the zero address!") + } + // Validate calldata + v.validateCallData(msgs, data, methodSelector) + } + return nil +} + +// ValidateTransaction does a number of checks on the supplied transaction, and returns either a list of warnings, +// or an error, indicating that the transaction should be immediately rejected +func (v *Validator) ValidateTransaction(txArgs *SendTxArgs, methodSelector *string) (*ValidationMessages, error) { + msgs := &ValidationMessages{} + return msgs, v.validate(msgs, txArgs, methodSelector) +} diff --git a/signer/core/validation_test.go b/signer/core/validation_test.go new file mode 100644 index 0000000000..2b33a8630b --- /dev/null +++ b/signer/core/validation_test.go @@ -0,0 +1,139 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package core + +import ( + "fmt" + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func hexAddr(a string) common.Address { return common.BytesToAddress(common.FromHex(a)) } +func mixAddr(a string) (*common.MixedcaseAddress, error) { + return common.NewMixedcaseAddressFromString(a) +} +func toHexBig(h string) hexutil.Big { + b := big.NewInt(0).SetBytes(common.FromHex(h)) + return hexutil.Big(*b) +} +func toHexUint(h string) hexutil.Uint64 { + b := big.NewInt(0).SetBytes(common.FromHex(h)) + return hexutil.Uint64(b.Uint64()) +} +func dummyTxArgs(t txtestcase) *SendTxArgs { + to, _ := mixAddr(t.to) + from, _ := mixAddr(t.from) + n := toHexUint(t.n) + gas := toHexUint(t.g) + gasPrice := toHexBig(t.gp) + value := toHexBig(t.value) + var ( + data, input *hexutil.Bytes + ) + if t.d != "" { + a := hexutil.Bytes(common.FromHex(t.d)) + data = &a + } + if t.i != "" { + a := hexutil.Bytes(common.FromHex(t.i)) + input = &a + + } + return &SendTxArgs{ + From: *from, + To: to, + Value: value, + Nonce: n, + GasPrice: gasPrice, + Gas: gas, + Data: data, + Input: input, + } +} + +type txtestcase struct { + from, to, n, g, gp, value, d, i string + expectErr bool + numMessages int +} + +func TestValidator(t *testing.T) { + var ( + // use empty db, there are other tests for the abi-specific stuff + db, _ = NewEmptyAbiDB() + v = NewValidator(db) + ) + testcases := []txtestcase{ + // Invalid to checksum + {from: "000000000000000000000000000000000000dead", to: "000000000000000000000000000000000000dead", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", numMessages: 1}, + // valid 0x000000000000000000000000000000000000dEaD + {from: "000000000000000000000000000000000000dead", to: "0x000000000000000000000000000000000000dEaD", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", numMessages: 0}, + // conflicting input and data + {from: "000000000000000000000000000000000000dead", to: "0x000000000000000000000000000000000000dEaD", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", d: "0x01", i: "0x02", expectErr: true}, + // Data can't be parsed + {from: "000000000000000000000000000000000000dead", to: "0x000000000000000000000000000000000000dEaD", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", d: "0x0102", numMessages: 1}, + // Data (on Input) can't be parsed + {from: "000000000000000000000000000000000000dead", to: "0x000000000000000000000000000000000000dEaD", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", i: "0x0102", numMessages: 1}, + // Send to 0 + {from: "000000000000000000000000000000000000dead", to: "0x0000000000000000000000000000000000000000", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", numMessages: 1}, + // Create empty contract (no value) + {from: "000000000000000000000000000000000000dead", to: "", + n: "0x01", g: "0x20", gp: "0x40", value: "0x00", numMessages: 1}, + // Create empty contract (with value) + {from: "000000000000000000000000000000000000dead", to: "", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", expectErr: true}, + // Small payload for create + {from: "000000000000000000000000000000000000dead", to: "", + n: "0x01", g: "0x20", gp: "0x40", value: "0x01", d: "0x01", numMessages: 1}, + } + for i, test := range testcases { + msgs, err := v.ValidateTransaction(dummyTxArgs(test), nil) + if err == nil && test.expectErr { + t.Errorf("Test %d, expected error", i) + for _, msg := range msgs.Messages { + fmt.Printf("* %s: %s\n", msg.Typ, msg.Message) + } + } + if err != nil && !test.expectErr { + t.Errorf("Test %d, unexpected error: %v", i, err) + } + if err == nil { + got := len(msgs.Messages) + if got != test.numMessages { + for _, msg := range msgs.Messages { + fmt.Printf("* %s: %s\n", msg.Typ, msg.Message) + } + t.Errorf("Test %d, expected %d messages, got %d", i, test.numMessages, got) + } else { + //Debug printout, remove later + for _, msg := range msgs.Messages { + fmt.Printf("* [%d] %s: %s\n", i, msg.Typ, msg.Message) + } + fmt.Println() + } + } + } +} diff --git a/signer/rules/deps/bignumber.js b/signer/rules/deps/bignumber.js new file mode 100644 index 0000000000..17c8851e24 --- /dev/null +++ b/signer/rules/deps/bignumber.js @@ -0,0 +1,4 @@ +/* bignumber.js v2.0.3 https://github.com/MikeMcl/bignumber.js/LICENCE */ +/* modified by zelig to fix https://github.com/robertkrimen/otto#regular-expression-incompatibility */ +!function(e){"use strict";function n(e){function a(e,n){var t,r,i,o,u,s,f=this;if(!(f instanceof a))return j&&L(26,"constructor call without new",e),new a(e,n);if(null!=n&&H(n,2,64,M,"base")){if(n=0|n,s=e+"",10==n)return f=new a(e instanceof a?e:s),U(f,P+f.e+1,k);if((o="number"==typeof e)&&0*e!=0||!new RegExp("^-?"+(t="["+O.slice(0,n)+"]+")+"(?:\\."+t+")?$",37>n?"i":"").test(s))return 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index 0000000000..0b27f45172 --- /dev/null +++ b/signer/rules/deps/bindata.go @@ -0,0 +1,235 @@ +// Code generated by go-bindata. +// sources: +// bignumber.js +// DO NOT EDIT! + +package deps + +import ( + "bytes" + "compress/gzip" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "strings" + "time" +) + +func bindataRead(data []byte, name string) ([]byte, error) { + gz, err := gzip.NewReader(bytes.NewBuffer(data)) + if err != nil { + return nil, fmt.Errorf("Read %q: %v", name, err) + } + + var buf bytes.Buffer + _, err = io.Copy(&buf, gz) + clErr := gz.Close() + + if err != nil { + return nil, fmt.Errorf("Read %q: %v", name, err) + } + if clErr != nil { + return nil, err + } + + return buf.Bytes(), nil +} + +type asset struct { + bytes []byte + info os.FileInfo +} + +type bindataFileInfo struct { + name string + size int64 + mode os.FileMode + modTime time.Time +} + +func (fi bindataFileInfo) Name() string { + return fi.name +} +func (fi bindataFileInfo) Size() int64 { + return fi.size +} +func (fi bindataFileInfo) Mode() os.FileMode { + return fi.mode +} +func (fi bindataFileInfo) ModTime() time.Time { + return fi.modTime +} +func (fi bindataFileInfo) IsDir() bool { + return false +} +func (fi bindataFileInfo) Sys() interface{} { + return nil +} + +var _bignumberJs = 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+ +func bignumberJsBytes() ([]byte, error) { + return bindataRead( + _bignumberJs, + "bignumber.js", + ) +} + +func bignumberJs() (*asset, error) { + bytes, err := bignumberJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "bignumber.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info} + return a, nil +} + +// Asset loads and returns the asset for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func Asset(name string) ([]byte, error) { + cannonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[cannonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err) + } + return a.bytes, nil + } + return nil, fmt.Errorf("Asset %s not found", name) +} + +// MustAsset is like Asset but panics when Asset would return an error. +// It simplifies safe initialization of global variables. +func MustAsset(name string) []byte { + a, err := Asset(name) + if err != nil { + panic("asset: Asset(" + name + "): " + err.Error()) + } + + return a +} + +// AssetInfo loads and returns the asset info for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func AssetInfo(name string) (os.FileInfo, error) { + cannonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[cannonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err) + } + return a.info, nil + } + return nil, fmt.Errorf("AssetInfo %s not found", name) +} + +// AssetNames returns the names of the assets. +func AssetNames() []string { + names := make([]string, 0, len(_bindata)) + for name := range _bindata { + names = append(names, name) + } + return names +} + +// _bindata is a table, holding each asset generator, mapped to its name. +var _bindata = map[string]func() (*asset, error){ + "bignumber.js": bignumberJs, +} + +// AssetDir returns the file names below a certain +// directory embedded in the file by go-bindata. +// For example if you run go-bindata on data/... and data contains the +// following hierarchy: +// data/ +// foo.txt +// img/ +// a.png +// b.png +// then AssetDir("data") would return []string{"foo.txt", "img"} +// AssetDir("data/img") would return []string{"a.png", "b.png"} +// AssetDir("foo.txt") and AssetDir("notexist") would return an error +// AssetDir("") will return []string{"data"}. +func AssetDir(name string) ([]string, error) { + node := _bintree + if len(name) != 0 { + cannonicalName := strings.Replace(name, "\\", "/", -1) + pathList := strings.Split(cannonicalName, "/") + for _, p := range pathList { + node = node.Children[p] + if node == nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + } + } + if node.Func != nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + rv := make([]string, 0, len(node.Children)) + for childName := range node.Children { + rv = append(rv, childName) + } + return rv, nil +} + +type bintree struct { + Func func() (*asset, error) + Children map[string]*bintree +} + +var _bintree = &bintree{nil, map[string]*bintree{ + "bignumber.js": {bignumberJs, map[string]*bintree{}}, +}} + +// RestoreAsset restores an asset under the given directory +func RestoreAsset(dir, name string) error { + data, err := Asset(name) + if err != nil { + return err + } + info, err := AssetInfo(name) + if err != nil { + return err + } + err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755)) + if err != nil { + return err + } + err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode()) + if err != nil { + return err + } + err = os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime()) + if err != nil { + return err + } + return nil +} + +// RestoreAssets restores an asset under the given directory recursively +func RestoreAssets(dir, name string) error { + children, err := AssetDir(name) + // File + if err != nil { + return RestoreAsset(dir, name) + } + // Dir + for _, child := range children { + err = RestoreAssets(dir, filepath.Join(name, child)) + if err != nil { + return err + } + } + return nil +} + +func _filePath(dir, name string) string { + cannonicalName := strings.Replace(name, "\\", "/", -1) + return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...) +} diff --git a/signer/rules/deps/deps.go b/signer/rules/deps/deps.go new file mode 100644 index 0000000000..5ee00b900a --- /dev/null +++ b/signer/rules/deps/deps.go @@ -0,0 +1,21 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package deps contains the console JavaScript dependencies Go embedded. +package deps + +//go:generate go-bindata -nometadata -pkg deps -o bindata.go bignumber.js +//go:generate gofmt -w -s bindata.go diff --git a/signer/rules/rules.go b/signer/rules/rules.go new file mode 100644 index 0000000000..fa270436df --- /dev/null +++ b/signer/rules/rules.go @@ -0,0 +1,248 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package rules + +import ( + "encoding/json" + "fmt" + "os" + "strings" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/signer/core" + "github.com/ethereum/go-ethereum/signer/rules/deps" + "github.com/ethereum/go-ethereum/signer/storage" + "github.com/robertkrimen/otto" +) + +var ( + BigNumber_JS = deps.MustAsset("bignumber.js") +) + +// consoleOutput is an override for the console.log and console.error methods to +// stream the output into the configured output stream instead of stdout. +func consoleOutput(call otto.FunctionCall) otto.Value { + output := []string{"JS:> "} + for _, argument := range call.ArgumentList { + output = append(output, fmt.Sprintf("%v", argument)) + } + fmt.Fprintln(os.Stdout, strings.Join(output, " ")) + return otto.Value{} +} + +// rulesetUi provides an implementation of SignerUI that evaluates a javascript +// file for each defined UI-method +type rulesetUi struct { + next core.SignerUI // The next handler, for manual processing + storage storage.Storage + credentials storage.Storage + jsRules string // The rules to use +} + +func NewRuleEvaluator(next core.SignerUI, jsbackend, credentialsBackend storage.Storage) (*rulesetUi, error) { + c := &rulesetUi{ + next: next, + storage: jsbackend, + credentials: credentialsBackend, + jsRules: "", + } + + return c, nil +} + +func (r *rulesetUi) Init(javascriptRules string) error { + r.jsRules = javascriptRules + return nil +} +func (r *rulesetUi) execute(jsfunc string, jsarg interface{}) (otto.Value, error) { + + // Instantiate a fresh vm engine every time + vm := otto.New() + // Set the native callbacks + consoleObj, _ := vm.Get("console") + consoleObj.Object().Set("log", consoleOutput) + consoleObj.Object().Set("error", consoleOutput) + vm.Set("storage", r.storage) + + // Load bootstrap libraries + script, err := vm.Compile("bignumber.js", BigNumber_JS) + if err != nil { + log.Warn("Failed loading libraries", "err", err) + return otto.UndefinedValue(), err + } + vm.Run(script) + + // Run the actual rule implementation + _, err = vm.Run(r.jsRules) + if err != nil { + log.Warn("Execution failed", "err", err) + return otto.UndefinedValue(), err + } + + // And the actual call + // All calls are objects with the parameters being keys in that object. + // To provide additional insulation between js and go, we serialize it into JSON on the Go-side, + // and deserialize it on the JS side. + + jsonbytes, err := json.Marshal(jsarg) + if err != nil { + log.Warn("failed marshalling data", "data", jsarg) + return otto.UndefinedValue(), err + } + // Now, we call foobar(JSON.parse()). + var call string + if len(jsonbytes) > 0 { + call = fmt.Sprintf("%v(JSON.parse(%v))", jsfunc, string(jsonbytes)) + } else { + call = fmt.Sprintf("%v()", jsfunc) + } + return vm.Run(call) +} + +func (r *rulesetUi) checkApproval(jsfunc string, jsarg []byte, err error) (bool, error) { + if err != nil { + return false, err + } + v, err := r.execute(jsfunc, string(jsarg)) + if err != nil { + log.Info("error occurred during execution", "error", err) + return false, err + } + result, err := v.ToString() + if err != nil { + log.Info("error occurred during response unmarshalling", "error", err) + return false, err + } + if result == "Approve" { + log.Info("Op approved") + return true, nil + } else if result == "Reject" { + log.Info("Op rejected") + return false, nil + } + return false, fmt.Errorf("Unknown response") +} + +func (r *rulesetUi) ApproveTx(request *core.SignTxRequest) (core.SignTxResponse, error) { + jsonreq, err := json.Marshal(request) + approved, err := r.checkApproval("ApproveTx", jsonreq, err) + if err != nil { + log.Info("Rule-based approval error, going to manual", "error", err) + return r.next.ApproveTx(request) + } + + if approved { + return core.SignTxResponse{ + Transaction: request.Transaction, + Approved: true, + Password: r.lookupPassword(request.Transaction.From.Address()), + }, + nil + } + return core.SignTxResponse{Approved: false}, err +} + +func (r *rulesetUi) lookupPassword(address common.Address) string { + return r.credentials.Get(strings.ToLower(address.String())) +} + +func (r *rulesetUi) ApproveSignData(request *core.SignDataRequest) (core.SignDataResponse, error) { + jsonreq, err := json.Marshal(request) + approved, err := r.checkApproval("ApproveSignData", jsonreq, err) + if err != nil { + log.Info("Rule-based approval error, going to manual", "error", err) + return r.next.ApproveSignData(request) + } + if approved { + return core.SignDataResponse{Approved: true, Password: r.lookupPassword(request.Address.Address())}, nil + } + return core.SignDataResponse{Approved: false, Password: ""}, err +} + +func (r *rulesetUi) ApproveExport(request *core.ExportRequest) (core.ExportResponse, error) { + jsonreq, err := json.Marshal(request) + approved, err := r.checkApproval("ApproveExport", jsonreq, err) + if err != nil { + log.Info("Rule-based approval error, going to manual", "error", err) + return r.next.ApproveExport(request) + } + if approved { + return core.ExportResponse{Approved: true}, nil + } + return core.ExportResponse{Approved: false}, err +} + +func (r *rulesetUi) ApproveImport(request *core.ImportRequest) (core.ImportResponse, error) { + // This cannot be handled by rules, requires setting a password + // dispatch to next + return r.next.ApproveImport(request) +} + +func (r *rulesetUi) ApproveListing(request *core.ListRequest) (core.ListResponse, error) { + jsonreq, err := json.Marshal(request) + approved, err := r.checkApproval("ApproveListing", jsonreq, err) + if err != nil { + log.Info("Rule-based approval error, going to manual", "error", err) + return r.next.ApproveListing(request) + } + if approved { + return core.ListResponse{Accounts: request.Accounts}, nil + } + return core.ListResponse{}, err +} + +func (r *rulesetUi) ApproveNewAccount(request *core.NewAccountRequest) (core.NewAccountResponse, error) { + // This cannot be handled by rules, requires setting a password + // dispatch to next + return r.next.ApproveNewAccount(request) +} + +func (r *rulesetUi) ShowError(message string) { + log.Error(message) + r.next.ShowError(message) +} + +func (r *rulesetUi) ShowInfo(message string) { + log.Info(message) + r.next.ShowInfo(message) +} +func (r *rulesetUi) OnSignerStartup(info core.StartupInfo) { + jsonInfo, err := json.Marshal(info) + if err != nil { + log.Warn("failed marshalling data", "data", info) + return + } + r.next.OnSignerStartup(info) + _, err = r.execute("OnSignerStartup", string(jsonInfo)) + if err != nil { + log.Info("error occurred during execution", "error", err) + } +} + +func (r *rulesetUi) OnApprovedTx(tx ethapi.SignTransactionResult) { + jsonTx, err := json.Marshal(tx) + if err != nil { + log.Warn("failed marshalling transaction", "tx", tx) + return + } + _, err = r.execute("OnApprovedTx", string(jsonTx)) + if err != nil { + log.Info("error occurred during execution", "error", err) + } +} diff --git a/signer/rules/rules_test.go b/signer/rules/rules_test.go new file mode 100644 index 0000000000..6a04035004 --- /dev/null +++ b/signer/rules/rules_test.go @@ -0,0 +1,631 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// +package rules + +import ( + "fmt" + "math/big" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/signer/core" + "github.com/ethereum/go-ethereum/signer/storage" +) + +const JS = ` +/** +This is an example implementation of a Javascript rule file. + +When the signer receives a request over the external API, the corresponding method is evaluated. +Three things can happen: + +1. The method returns "Approve". This means the operation is permitted. +2. The method returns "Reject". This means the operation is rejected. +3. Anything else; other return values [*], method not implemented or exception occurred during processing. This means +that the operation will continue to manual processing, via the regular UI method chosen by the user. + +[*] Note: Future version of the ruleset may use more complex json-based returnvalues, making it possible to not +only respond Approve/Reject/Manual, but also modify responses. For example, choose to list only one, but not all +accounts in a list-request. The points above will continue to hold for non-json based responses ("Approve"/"Reject"). + +**/ + +function ApproveListing(request){ + console.log("In js approve listing"); + console.log(request.accounts[3].Address) + console.log(request.meta.Remote) + return "Approve" +} + +function ApproveTx(request){ + console.log("test"); + console.log("from"); + return "Reject"; +} + +function test(thing){ + console.log(thing.String()) +} + +` + +func mixAddr(a string) (*common.MixedcaseAddress, error) { + return common.NewMixedcaseAddressFromString(a) +} + +type alwaysDenyUi struct{} + +func (alwaysDenyUi) OnSignerStartup(info core.StartupInfo) { +} + +func (alwaysDenyUi) ApproveTx(request *core.SignTxRequest) (core.SignTxResponse, error) { + return core.SignTxResponse{Transaction: request.Transaction, Approved: false, Password: ""}, nil +} + +func (alwaysDenyUi) ApproveSignData(request *core.SignDataRequest) (core.SignDataResponse, error) { + return core.SignDataResponse{Approved: false, Password: ""}, nil +} + +func (alwaysDenyUi) ApproveExport(request *core.ExportRequest) (core.ExportResponse, error) { + return core.ExportResponse{Approved: false}, nil +} + +func (alwaysDenyUi) ApproveImport(request *core.ImportRequest) (core.ImportResponse, error) { + return core.ImportResponse{Approved: false, OldPassword: "", NewPassword: ""}, nil +} + +func (alwaysDenyUi) ApproveListing(request *core.ListRequest) (core.ListResponse, error) { + return core.ListResponse{Accounts: nil}, nil +} + +func (alwaysDenyUi) ApproveNewAccount(request *core.NewAccountRequest) (core.NewAccountResponse, error) { + return core.NewAccountResponse{Approved: false, Password: ""}, nil +} + +func (alwaysDenyUi) ShowError(message string) { + panic("implement me") +} + +func (alwaysDenyUi) ShowInfo(message string) { + panic("implement me") +} + +func (alwaysDenyUi) OnApprovedTx(tx ethapi.SignTransactionResult) { + panic("implement me") +} + +func initRuleEngine(js string) (*rulesetUi, error) { + r, err := NewRuleEvaluator(&alwaysDenyUi{}, storage.NewEphemeralStorage(), storage.NewEphemeralStorage()) + if err != nil { + return nil, fmt.Errorf("failed to create js engine: %v", err) + } + if err = r.Init(js); err != nil { + return nil, fmt.Errorf("failed to load bootstrap js: %v", err) + } + return r, nil +} + +func TestListRequest(t *testing.T) { + accs := make([]core.Account, 5) + + for i := range accs { + addr := fmt.Sprintf("000000000000000000000000000000000000000%x", i) + acc := core.Account{ + Address: common.BytesToAddress(common.Hex2Bytes(addr)), + URL: accounts.URL{Scheme: "test", Path: fmt.Sprintf("acc-%d", i)}, + } + accs[i] = acc + } + + js := `function ApproveListing(){ return "Approve" }` + + r, err := initRuleEngine(js) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + resp, err := r.ApproveListing(&core.ListRequest{ + Accounts: accs, + Meta: core.Metadata{Remote: "remoteip", Local: "localip", Scheme: "inproc"}, + }) + if len(resp.Accounts) != len(accs) { + t.Errorf("Expected check to resolve to 'Approve'") + } +} + +func TestSignTxRequest(t *testing.T) { + + js := ` + function ApproveTx(r){ + console.log("transaction.from", r.transaction.from); + console.log("transaction.to", r.transaction.to); + console.log("transaction.value", r.transaction.value); + console.log("transaction.nonce", r.transaction.nonce); + if(r.transaction.from.toLowerCase()=="0x0000000000000000000000000000000000001337"){ return "Approve"} + if(r.transaction.from.toLowerCase()=="0x000000000000000000000000000000000000dead"){ return "Reject"} + }` + + r, err := initRuleEngine(js) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + to, err := mixAddr("000000000000000000000000000000000000dead") + if err != nil { + t.Error(err) + return + } + from, err := mixAddr("0000000000000000000000000000000000001337") + + if err != nil { + t.Error(err) + return + } + fmt.Printf("to %v", to.Address().String()) + resp, err := r.ApproveTx(&core.SignTxRequest{ + Transaction: core.SendTxArgs{ + From: *from, + To: to}, + Callinfo: nil, + Meta: core.Metadata{Remote: "remoteip", Local: "localip", Scheme: "inproc"}, + }) + if err != nil { + t.Errorf("Unexpected error %v", err) + } + if !resp.Approved { + t.Errorf("Expected check to resolve to 'Approve'") + } +} + +type dummyUi struct { + calls []string +} + +func (d *dummyUi) ApproveTx(request *core.SignTxRequest) (core.SignTxResponse, error) { + d.calls = append(d.calls, "ApproveTx") + return core.SignTxResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ApproveSignData(request *core.SignDataRequest) (core.SignDataResponse, error) { + d.calls = append(d.calls, "ApproveSignData") + return core.SignDataResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ApproveExport(request *core.ExportRequest) (core.ExportResponse, error) { + d.calls = append(d.calls, "ApproveExport") + return core.ExportResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ApproveImport(request *core.ImportRequest) (core.ImportResponse, error) { + d.calls = append(d.calls, "ApproveImport") + return core.ImportResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ApproveListing(request *core.ListRequest) (core.ListResponse, error) { + d.calls = append(d.calls, "ApproveListing") + return core.ListResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ApproveNewAccount(request *core.NewAccountRequest) (core.NewAccountResponse, error) { + d.calls = append(d.calls, "ApproveNewAccount") + return core.NewAccountResponse{}, core.ErrRequestDenied +} + +func (d *dummyUi) ShowError(message string) { + d.calls = append(d.calls, "ShowError") +} + +func (d *dummyUi) ShowInfo(message string) { + d.calls = append(d.calls, "ShowInfo") +} + +func (d *dummyUi) OnApprovedTx(tx ethapi.SignTransactionResult) { + d.calls = append(d.calls, "OnApprovedTx") +} +func (d *dummyUi) OnSignerStartup(info core.StartupInfo) { +} + +//TestForwarding tests that the rule-engine correctly dispatches requests to the next caller +func TestForwarding(t *testing.T) { + + js := "" + ui := &dummyUi{make([]string, 0)} + jsBackend := storage.NewEphemeralStorage() + credBackend := storage.NewEphemeralStorage() + r, err := NewRuleEvaluator(ui, jsBackend, credBackend) + if err != nil { + t.Fatalf("Failed to create js engine: %v", err) + } + if err = r.Init(js); err != nil { + t.Fatalf("Failed to load bootstrap js: %v", err) + } + r.ApproveSignData(nil) + r.ApproveTx(nil) + r.ApproveImport(nil) + r.ApproveNewAccount(nil) + r.ApproveListing(nil) + r.ApproveExport(nil) + r.ShowError("test") + r.ShowInfo("test") + + //This one is not forwarded + r.OnApprovedTx(ethapi.SignTransactionResult{}) + + expCalls := 8 + if len(ui.calls) != expCalls { + + t.Errorf("Expected %d forwarded calls, got %d: %s", expCalls, len(ui.calls), strings.Join(ui.calls, ",")) + + } + +} + +func TestMissingFunc(t *testing.T) { + r, err := initRuleEngine(JS) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + + _, err = r.execute("MissingMethod", "test") + + if err == nil { + t.Error("Expected error") + } + + approved, err := r.checkApproval("MissingMethod", nil, nil) + if err == nil { + t.Errorf("Expected missing method to yield error'") + } + if approved { + t.Errorf("Expected missing method to cause non-approval") + } + fmt.Printf("Err %v", err) + +} +func TestStorage(t *testing.T) { + + js := ` + function testStorage(){ + storage.Put("mykey", "myvalue") + a = storage.Get("mykey") + + storage.Put("mykey", ["a", "list"]) // Should result in "a,list" + a += storage.Get("mykey") + + + storage.Put("mykey", {"an": "object"}) // Should result in "[object Object]" + a += storage.Get("mykey") + + + storage.Put("mykey", JSON.stringify({"an": "object"})) // Should result in '{"an":"object"}' + a += storage.Get("mykey") + + a += storage.Get("missingkey") //Missing keys should result in empty string + storage.Put("","missing key==noop") // Can't store with 0-length key + a += storage.Get("") // Should result in '' + + var b = new BigNumber(2) + var c = new BigNumber(16)//"0xf0",16) + var d = b.plus(c) + console.log(d) + return a + } +` + r, err := initRuleEngine(js) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + + v, err := r.execute("testStorage", nil) + + if err != nil { + t.Errorf("Unexpected error %v", err) + } + + retval, err := v.ToString() + + if err != nil { + t.Errorf("Unexpected error %v", err) + } + exp := `myvaluea,list[object Object]{"an":"object"}` + if retval != exp { + t.Errorf("Unexpected data, expected '%v', got '%v'", exp, retval) + } + fmt.Printf("Err %v", err) + +} + +const ExampleTxWindow = ` + function big(str){ + if(str.slice(0,2) == "0x"){ return new BigNumber(str.slice(2),16)} + return new BigNumber(str) + } + + // Time window: 1 week + var window = 1000* 3600*24*7; + + // Limit : 1 ether + var limit = new BigNumber("1e18"); + + function isLimitOk(transaction){ + var value = big(transaction.value) + // Start of our window function + var windowstart = new Date().getTime() - window; + + var txs = []; + var stored = storage.Get('txs'); + + if(stored != ""){ + txs = JSON.parse(stored) + } + // First, remove all that have passed out of the time-window + var newtxs = txs.filter(function(tx){return tx.tstamp > windowstart}); + console.log(txs, newtxs.length); + + // Secondly, aggregate the current sum + sum = new BigNumber(0) + + sum = newtxs.reduce(function(agg, tx){ return big(tx.value).plus(agg)}, sum); + console.log("ApproveTx > Sum so far", sum); + console.log("ApproveTx > Requested", value.toNumber()); + + // Would we exceed weekly limit ? + return sum.plus(value).lt(limit) + + } + function ApproveTx(r){ + console.log(r) + console.log(typeof(r)) + if (isLimitOk(r.transaction)){ + return "Approve" + } + return "Nope" + } + + /** + * OnApprovedTx(str) is called when a transaction has been approved and signed. The parameter + * 'response_str' contains the return value that will be sent to the external caller. + * The return value from this method is ignore - the reason for having this callback is to allow the + * ruleset to keep track of approved transactions. + * + * When implementing rate-limited rules, this callback should be used. + * If a rule responds with neither 'Approve' nor 'Reject' - the tx goes to manual processing. If the user + * then accepts the transaction, this method will be called. + * + * TLDR; Use this method to keep track of signed transactions, instead of using the data in ApproveTx. + */ + function OnApprovedTx(resp){ + var value = big(resp.tx.value) + var txs = [] + // Load stored transactions + var stored = storage.Get('txs'); + if(stored != ""){ + txs = JSON.parse(stored) + } + // Add this to the storage + txs.push({tstamp: new Date().getTime(), value: value}); + storage.Put("txs", JSON.stringify(txs)); + } + +` + +func dummyTx(value hexutil.Big) *core.SignTxRequest { + + to, _ := mixAddr("000000000000000000000000000000000000dead") + from, _ := mixAddr("000000000000000000000000000000000000dead") + n := hexutil.Uint64(3) + gas := hexutil.Uint64(21000) + gasPrice := hexutil.Big(*big.NewInt(2000000)) + + return &core.SignTxRequest{ + Transaction: core.SendTxArgs{ + From: *from, + To: to, + Value: value, + Nonce: n, + GasPrice: gasPrice, + Gas: gas, + }, + Callinfo: []core.ValidationInfo{ + {Typ: "Warning", Message: "All your base are bellong to us"}, + }, + Meta: core.Metadata{Remote: "remoteip", Local: "localip", Scheme: "inproc"}, + } +} +func dummyTxWithV(value uint64) *core.SignTxRequest { + + v := big.NewInt(0).SetUint64(value) + h := hexutil.Big(*v) + return dummyTx(h) +} +func dummySigned(value *big.Int) *types.Transaction { + to := common.HexToAddress("000000000000000000000000000000000000dead") + gas := uint64(21000) + gasPrice := big.NewInt(2000000) + data := make([]byte, 0) + return types.NewTransaction(3, to, value, gas, gasPrice, data) + +} +func TestLimitWindow(t *testing.T) { + + r, err := initRuleEngine(ExampleTxWindow) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + + // 0.3 ether: 429D069189E0000 wei + v := big.NewInt(0).SetBytes(common.Hex2Bytes("0429D069189E0000")) + h := hexutil.Big(*v) + // The first three should succeed + for i := 0; i < 3; i++ { + unsigned := dummyTx(h) + resp, err := r.ApproveTx(unsigned) + if err != nil { + t.Errorf("Unexpected error %v", err) + } + if !resp.Approved { + t.Errorf("Expected check to resolve to 'Approve'") + } + // Create a dummy signed transaction + + response := ethapi.SignTransactionResult{ + Tx: dummySigned(v), + Raw: common.Hex2Bytes("deadbeef"), + } + r.OnApprovedTx(response) + } + // Fourth should fail + resp, err := r.ApproveTx(dummyTx(h)) + if resp.Approved { + t.Errorf("Expected check to resolve to 'Reject'") + } + +} + +// dontCallMe is used as a next-handler that does not want to be called - it invokes test failure +type dontCallMe struct { + t *testing.T +} + +func (d *dontCallMe) OnSignerStartup(info core.StartupInfo) { +} + +func (d *dontCallMe) ApproveTx(request *core.SignTxRequest) (core.SignTxResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.SignTxResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ApproveSignData(request *core.SignDataRequest) (core.SignDataResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.SignDataResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ApproveExport(request *core.ExportRequest) (core.ExportResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.ExportResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ApproveImport(request *core.ImportRequest) (core.ImportResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.ImportResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ApproveListing(request *core.ListRequest) (core.ListResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.ListResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ApproveNewAccount(request *core.NewAccountRequest) (core.NewAccountResponse, error) { + d.t.Fatalf("Did not expect next-handler to be called") + return core.NewAccountResponse{}, core.ErrRequestDenied +} + +func (d *dontCallMe) ShowError(message string) { + d.t.Fatalf("Did not expect next-handler to be called") +} + +func (d *dontCallMe) ShowInfo(message string) { + d.t.Fatalf("Did not expect next-handler to be called") +} + +func (d *dontCallMe) OnApprovedTx(tx ethapi.SignTransactionResult) { + d.t.Fatalf("Did not expect next-handler to be called") +} + +//TestContextIsCleared tests that the rule-engine does not retain variables over several requests. +// if it does, that would be bad since developers may rely on that to store data, +// instead of using the disk-based data storage +func TestContextIsCleared(t *testing.T) { + + js := ` + function ApproveTx(){ + if (typeof foobar == 'undefined') { + foobar = "Approve" + } + console.log(foobar) + if (foobar == "Approve"){ + foobar = "Reject" + }else{ + foobar = "Approve" + } + return foobar + } + ` + ui := &dontCallMe{t} + r, err := NewRuleEvaluator(ui, storage.NewEphemeralStorage(), storage.NewEphemeralStorage()) + if err != nil { + t.Fatalf("Failed to create js engine: %v", err) + } + if err = r.Init(js); err != nil { + t.Fatalf("Failed to load bootstrap js: %v", err) + } + tx := dummyTxWithV(0) + r1, err := r.ApproveTx(tx) + r2, err := r.ApproveTx(tx) + if r1.Approved != r2.Approved { + t.Errorf("Expected execution context to be cleared between executions") + } +} + +func TestSignData(t *testing.T) { + + js := `function ApproveListing(){ + return "Approve" +} +function ApproveSignData(r){ + if( r.address.toLowerCase() == "0x694267f14675d7e1b9494fd8d72fefe1755710fa") + { + if(r.message.indexOf("bazonk") >= 0){ + return "Approve" + } + return "Reject" + } + // Otherwise goes to manual processing +}` + r, err := initRuleEngine(js) + if err != nil { + t.Errorf("Couldn't create evaluator %v", err) + return + } + message := []byte("baz bazonk foo") + hash, msg := core.SignHash(message) + raw := hexutil.Bytes(message) + addr, _ := mixAddr("0x694267f14675d7e1b9494fd8d72fefe1755710fa") + + fmt.Printf("address %v %v\n", addr.String(), addr.Original()) + resp, err := r.ApproveSignData(&core.SignDataRequest{ + Address: *addr, + Message: msg, + Hash: hash, + Meta: core.Metadata{Remote: "remoteip", Local: "localip", Scheme: "inproc"}, + Rawdata: raw, + }) + if err != nil { + t.Fatalf("Unexpected error %v", err) + } + if !resp.Approved { + t.Fatalf("Expected approved") + } +} diff --git a/signer/storage/aes_gcm_storage.go b/signer/storage/aes_gcm_storage.go new file mode 100644 index 0000000000..1ac3475588 --- /dev/null +++ b/signer/storage/aes_gcm_storage.go @@ -0,0 +1,164 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// +package storage + +import ( + "crypto/aes" + "crypto/cipher" + "crypto/rand" + "encoding/json" + "io" + "io/ioutil" + "os" + + "github.com/ethereum/go-ethereum/log" +) + +type storedCredential struct { + // The iv + Iv []byte `json:"iv"` + // The ciphertext + CipherText []byte `json:"c"` +} + +// AESEncryptedStorage is a storage type which is backed by a json-faile. The json-file contains +// key-value mappings, where the keys are _not_ encrypted, only the values are. +type AESEncryptedStorage struct { + // File to read/write credentials + filename string + // Key stored in base64 + key []byte +} + +// NewAESEncryptedStorage creates a new encrypted storage backed by the given file/key +func NewAESEncryptedStorage(filename string, key []byte) *AESEncryptedStorage { + return &AESEncryptedStorage{ + filename: filename, + key: key, + } +} + +// Put stores a value by key. 0-length keys results in no-op +func (s *AESEncryptedStorage) Put(key, value string) { + if len(key) == 0 { + return + } + data, err := s.readEncryptedStorage() + if err != nil { + log.Warn("Failed to read encrypted storage", "err", err, "file", s.filename) + return + } + ciphertext, iv, err := encrypt(s.key, []byte(value)) + if err != nil { + log.Warn("Failed to encrypt entry", "err", err) + return + } + encrypted := storedCredential{Iv: iv, CipherText: ciphertext} + data[key] = encrypted + if err = s.writeEncryptedStorage(data); err != nil { + log.Warn("Failed to write entry", "err", err) + } +} + +// Get returns the previously stored value, or the empty string if it does not exist or key is of 0-length +func (s *AESEncryptedStorage) Get(key string) string { + if len(key) == 0 { + return "" + } + data, err := s.readEncryptedStorage() + if err != nil { + log.Warn("Failed to read encrypted storage", "err", err, "file", s.filename) + return "" + } + encrypted, exist := data[key] + if !exist { + log.Warn("Key does not exist", "key", key) + return "" + } + entry, err := decrypt(s.key, encrypted.Iv, encrypted.CipherText) + if err != nil { + log.Warn("Failed to decrypt key", "key", key) + return "" + } + return string(entry) +} + +// readEncryptedStorage reads the file with encrypted creds +func (s *AESEncryptedStorage) readEncryptedStorage() (map[string]storedCredential, error) { + creds := make(map[string]storedCredential) + raw, err := ioutil.ReadFile(s.filename) + + if err != nil { + if os.IsNotExist(err) { + // Doesn't exist yet + return creds, nil + + } else { + log.Warn("Failed to read encrypted storage", "err", err, "file", s.filename) + } + } + if err = json.Unmarshal(raw, &creds); err != nil { + log.Warn("Failed to unmarshal encrypted storage", "err", err, "file", s.filename) + return nil, err + } + return creds, nil +} + +// writeEncryptedStorage write the file with encrypted creds +func (s *AESEncryptedStorage) writeEncryptedStorage(creds map[string]storedCredential) error { + raw, err := json.Marshal(creds) + if err != nil { + return err + } + if err = ioutil.WriteFile(s.filename, raw, 0600); err != nil { + return err + } + return nil +} + +func encrypt(key []byte, plaintext []byte) ([]byte, []byte, error) { + block, err := aes.NewCipher(key) + if err != nil { + return nil, nil, err + } + aesgcm, err := cipher.NewGCM(block) + nonce := make([]byte, aesgcm.NonceSize()) + if _, err := io.ReadFull(rand.Reader, nonce); err != nil { + return nil, nil, err + } + if err != nil { + return nil, nil, err + } + ciphertext := aesgcm.Seal(nil, nonce, plaintext, nil) + return ciphertext, nonce, nil +} + +func decrypt(key []byte, nonce []byte, ciphertext []byte) ([]byte, error) { + block, err := aes.NewCipher(key) + if err != nil { + return nil, err + } + aesgcm, err := cipher.NewGCM(block) + if err != nil { + return nil, err + } + plaintext, err := aesgcm.Open(nil, nonce, ciphertext, nil) + if err != nil { + return nil, err + } + return plaintext, nil +} diff --git a/signer/storage/aes_gcm_storage_test.go b/signer/storage/aes_gcm_storage_test.go new file mode 100644 index 0000000000..77804905ac --- /dev/null +++ b/signer/storage/aes_gcm_storage_test.go @@ -0,0 +1,115 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// +package storage + +import ( + "bytes" + "fmt" + "io/ioutil" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/mattn/go-colorable" +) + +func TestEncryption(t *testing.T) { + // key := []byte("AES256Key-32Characters1234567890") + // plaintext := []byte(value) + key := []byte("AES256Key-32Characters1234567890") + plaintext := []byte("exampleplaintext") + + c, iv, err := encrypt(key, plaintext) + if err != nil { + t.Fatal(err) + } + fmt.Printf("Ciphertext %x, nonce %x\n", c, iv) + + p, err := decrypt(key, iv, c) + if err != nil { + t.Fatal(err) + } + fmt.Printf("Plaintext %v\n", string(p)) + if !bytes.Equal(plaintext, p) { + t.Errorf("Failed: expected plaintext recovery, got %v expected %v", string(plaintext), string(p)) + } +} + +func TestFileStorage(t *testing.T) { + + a := map[string]storedCredential{ + "secret": { + Iv: common.Hex2Bytes("cdb30036279601aeee60f16b"), + CipherText: common.Hex2Bytes("f311ac49859d7260c2c464c28ffac122daf6be801d3cfd3edcbde7e00c9ff74f"), + }, + "secret2": { + Iv: common.Hex2Bytes("afb8a7579bf971db9f8ceeed"), + CipherText: common.Hex2Bytes("2df87baf86b5073ef1f03e3cc738de75b511400f5465bb0ddeacf47ae4dc267d"), + }, + } + d, err := ioutil.TempDir("", "eth-encrypted-storage-test") + if err != nil { + t.Fatal(err) + } + stored := &AESEncryptedStorage{ + filename: fmt.Sprintf("%v/vault.json", d), + key: []byte("AES256Key-32Characters1234567890"), + } + stored.writeEncryptedStorage(a) + read := &AESEncryptedStorage{ + filename: fmt.Sprintf("%v/vault.json", d), + key: []byte("AES256Key-32Characters1234567890"), + } + creds, err := read.readEncryptedStorage() + if err != nil { + t.Fatal(err) + } + for k, v := range a { + if v2, exist := creds[k]; !exist { + t.Errorf("Missing entry %v", k) + } else { + if !bytes.Equal(v.CipherText, v2.CipherText) { + t.Errorf("Wrong ciphertext, expected %x got %x", v.CipherText, v2.CipherText) + } + if !bytes.Equal(v.Iv, v2.Iv) { + t.Errorf("Wrong iv") + } + } + } +} +func TestEnd2End(t *testing.T) { + log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(3), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true)))) + + d, err := ioutil.TempDir("", "eth-encrypted-storage-test") + if err != nil { + t.Fatal(err) + } + + s1 := &AESEncryptedStorage{ + filename: fmt.Sprintf("%v/vault.json", d), + key: []byte("AES256Key-32Characters1234567890"), + } + s2 := &AESEncryptedStorage{ + filename: fmt.Sprintf("%v/vault.json", d), + key: []byte("AES256Key-32Characters1234567890"), + } + + s1.Put("bazonk", "foobar") + if v := s2.Get("bazonk"); v != "foobar" { + t.Errorf("Expected bazonk->foobar, got '%v'", v) + } +} diff --git a/signer/storage/storage.go b/signer/storage/storage.go new file mode 100644 index 0000000000..60f4e3892a --- /dev/null +++ b/signer/storage/storage.go @@ -0,0 +1,62 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . +// + +package storage + +import ( + "fmt" +) + +type Storage interface { + // Put stores a value by key. 0-length keys results in no-op + Put(key, value string) + // Get returns the previously stored value, or the empty string if it does not exist or key is of 0-length + Get(key string) string +} + +// EphemeralStorage is an in-memory storage that does +// not persist values to disk. Mainly used for testing +type EphemeralStorage struct { + data map[string]string + namespace string +} + +func (s *EphemeralStorage) Put(key, value string) { + if len(key) == 0 { + return + } + fmt.Printf("storage: put %v -> %v\n", key, value) + s.data[key] = value +} + +func (s *EphemeralStorage) Get(key string) string { + if len(key) == 0 { + return "" + } + fmt.Printf("storage: get %v\n", key) + if v, exist := s.data[key]; exist { + return v + } + return "" +} + +func NewEphemeralStorage() Storage { + s := &EphemeralStorage{ + data: make(map[string]string), + } + return s +}