status-desktop/ui/app/AppLayouts/Wallet/services/dapps/DAppsRequestHandler.qml

662 lines
28 KiB
QML

import QtQuick 2.15
import AppLayouts.Wallet.services.dapps 1.0
import AppLayouts.Wallet.services.dapps.types 1.0
import AppLayouts.Wallet.stores 1.0 as WalletStore
import StatusQ.Core.Utils 0.1 as SQUtils
import shared.stores 1.0
import utils 1.0
import "types"
SQUtils.QObject {
id: root
required property WalletConnectSDKBase sdk
required property DAppsStore store
required property var accountsModel
required property var networksModel
required property CurrenciesStore currenciesStore
required property WalletStore.WalletAssetsStore assetsStore
property alias requestsModel: requests
function rejectSessionRequest(request, userRejected) {
let error = userRejected ? false : true
sdk.rejectSessionRequest(request.topic, request.id, error)
}
/// Beware, it will fail if called multiple times before getting an answer
function authenticate(request, payload) {
return store.authenticateUser(request.topic, request.id, request.account.address, payload)
}
signal sessionRequest(SessionRequestResolved request)
signal displayToastMessage(string message, bool error)
signal sessionRequestResult(/*model entry of SessionRequestResolved*/ var request, bool isSuccess)
signal maxFeesUpdated(real fiatMaxFees, var /* Big */ ethMaxFees, bool haveEnoughFunds, bool haveEnoughFees, string symbol, var feesInfo)
// Reports Constants.TransactionEstimatedTime values
signal estimatedTimeUpdated(int estimatedTimeEnum)
Connections {
target: sdk
function onSessionRequestEvent(event) {
const res = d.resolveAsync(event)
if (res.code == d.resolveAsyncResult.error) {
let error = true
sdk.rejectSessionRequest(event.topic, event.id, error)
return
}
if (res.code == d.resolveAsyncResult.ignored) {
return
}
if (!res.obj) {
console.error("Unexpected res.obj value!")
return
}
requests.enqueue(res.obj)
}
function onSessionRequestUserAnswerResult(topic, id, accept, error) {
let request = requests.findRequest(topic, id)
if (request === null) {
console.error("Error finding event for topic", topic, "id", id)
return
}
let methodStr = SessionRequest.methodToUserString(request.method)
if (!methodStr) {
console.error("Error finding user string for method", request.method)
return
}
d.lookupSession(topic, function(session) {
if (session === null)
return
if (error) {
root.displayToastMessage(qsTr("Fail to %1 from %2").arg(methodStr).arg(session.peer.metadata.url), true)
root.sessionRequestResult(request, false /*isSuccessful*/)
console.error(`Error accepting session request for topic: ${topic}, id: ${id}, accept: ${accept}, error: ${error}`)
return
}
let actionStr = accept ? qsTr("accepted") : qsTr("rejected")
root.displayToastMessage("%1 %2 %3".arg(session.peer.metadata.url).arg(methodStr).arg(actionStr), false)
root.sessionRequestResult(request, true /*isSuccessful*/)
})
}
}
Connections {
target: root.store
function onUserAuthenticated(topic, id, password, pin, payload) {
var request = requests.findRequest(topic, id)
if (request === null) {
console.error("Error finding event for topic", topic, "id", id)
return
}
d.executeSessionRequest(request, password, pin, payload)
}
function onUserAuthenticationFailed(topic, id) {
let request = requests.findRequest(topic, id)
let methodStr = SessionRequest.methodToUserString(request.method)
if (request === null || !methodStr) {
return
}
d.lookupSession(topic, function(session) {
if (session === null)
return
root.displayToastMessage(qsTr("Failed to authenticate %1 from %2").arg(methodStr).arg(session.peer.metadata.url), true)
})
}
}
SQUtils.QObject {
id: d
readonly property QtObject resolveAsyncResult: QtObject {
readonly property int error: 0
readonly property int ok: 1
readonly property int ignored: 2
}
// returns {
// obj: obj or nil
// code: resolveAsyncResult codes
// }
function resolveAsync(event) {
const method = event.params.request.method
const res = lookupAccountFromEvent(event, method)
if(!res.success) {
console.info("Error finding account for event", JSON.stringify(event))
return { obj: null, code: resolveAsyncResult.error }
}
if (!res.account) {
console.info("Ignoring request for an account not in the current profile.")
return { obj: null, code: resolveAsyncResult.ignored }
}
const account = res.account
let network = lookupNetworkFromEvent(event, method)
if(!network) {
console.error("Error finding network for event", JSON.stringify(event))
return { obj: null, code: resolveAsyncResult.error }
}
let data = extractMethodData(event, method)
if(!data) {
console.error("Error in event data lookup", JSON.stringify(event))
return { obj: null, code: resolveAsyncResult.error }
}
const interpreted = d.prepareData(method, data)
let enoughFunds = !d.isTransactionMethod(method)
let obj = sessionRequestComponent.createObject(null, {
event,
topic: event.topic,
id: event.id,
method,
account,
network,
data,
preparedData: interpreted.preparedData,
maxFeesText: "?",
maxFeesEthText: "?",
enoughFunds: enoughFunds,
})
if (obj === null) {
console.error("Error creating SessionRequestResolved for event")
return { obj: null, code: resolveAsyncResult.error }
}
// Check later to have a valid request object
if (!SessionRequest.getSupportedMethods().includes(method)) {
console.error("Unsupported method", method)
return { obj: null, code: resolveAsyncResult.error }
}
d.lookupSession(obj.topic, function(session) {
if (session === null) {
console.error("DAppsRequestHandler.lookupSession: error finding session for topic", obj.topic)
return
}
obj.resolveDappInfoFromSession(session)
root.sessionRequest(obj)
if (!d.isTransactionMethod(method)) {
return
}
let estimatedTimeEnum = getEstimatedTimeInterval(data, method, obj.network.chainId)
root.estimatedTimeUpdated(estimatedTimeEnum)
const mainNet = lookupMainnetNetwork()
let mainChainId = obj.network.chainId
if (!!mainNet) {
mainChainId = mainNet.chainId
} else {
console.error("Error finding mainnet network")
}
let st = getEstimatedFeesStatus(data, method, obj.network.chainId, mainChainId)
let fundsStatus = checkFundsStatus(st.feesInfo.maxFees, st.feesInfo.l1GasFee, account.address, obj.network.chainId, mainNet.chainId, interpreted.value)
root.maxFeesUpdated(st.fiatMaxFees.toNumber(), st.maxFeesEth, fundsStatus.haveEnoughFunds,
fundsStatus.haveEnoughForFees, st.symbol, st.feesInfo)
})
return {
obj: obj,
code: resolveAsyncResult.ok
}
}
/// returns {
/// account
/// success
/// }
/// if account is null and success is true it means that the account was not found
function lookupAccountFromEvent(event, method) {
let address = ""
if (method === SessionRequest.methods.personalSign.name) {
if (event.params.request.params.length < 2) {
return { account: null, success: false }
}
address = event.params.request.params[1]
} else if (method === SessionRequest.methods.sign.name) {
if (event.params.request.params.length === 1) {
return { account: null, success: false }
}
address = event.params.request.params[0]
} else if(method === SessionRequest.methods.signTypedData_v4.name ||
method === SessionRequest.methods.signTypedData.name)
{
if (event.params.request.params.length < 2) {
return { account: null, success: false }
}
address = event.params.request.params[0]
} else if (d.isTransactionMethod(method)) {
if (event.params.request.params.length == 0) {
return { account: null, success: false }
}
address = event.params.request.params[0].from
} else {
console.error("Unsupported method to lookup account: ", method)
return { account: null, success: false }
}
const account = SQUtils.ModelUtils.getFirstModelEntryIf(root.accountsModel, (account) => {
return account.address.toLowerCase() === address.toLowerCase();
})
return { account, success: true }
}
/// Returns null if the network is not found
function lookupNetworkFromEvent(event, method) {
if (SessionRequest.getSupportedMethods().includes(method) === false) {
return null
}
let chainId = Helpers.chainIdFromEip155(event.params.chainId)
return SQUtils.ModelUtils.getByKey(root.networksModel, "chainId", chainId)
}
/// Returns null if the network is not found
function lookupMainnetNetwork() {
return SQUtils.ModelUtils.getByKey(root.networksModel, "layer", 1)
}
function extractMethodData(event, method) {
if (method === SessionRequest.methods.personalSign.name ||
method === SessionRequest.methods.sign.name)
{
if (event.params.request.params.length < 1) {
return null
}
let message = ""
let messageIndex = (method === SessionRequest.methods.personalSign.name ? 0 : 1)
let messageParam = event.params.request.params[messageIndex]
// There is no standard on how data is encoded. Therefore we support hex or utf8
if (Helpers.isHex(messageParam)) {
message = Helpers.hexToString(messageParam)
} else {
message = messageParam
}
return SessionRequest.methods.personalSign.buildDataObject(message)
} else if (method === SessionRequest.methods.signTypedData_v4.name ||
method === SessionRequest.methods.signTypedData.name)
{
if (event.params.request.params.length < 2) {
return null
}
let jsonMessage = event.params.request.params[1]
let methodObj = method === SessionRequest.methods.signTypedData_v4.name
? SessionRequest.methods.signTypedData_v4
: SessionRequest.methods.signTypedData
return methodObj.buildDataObject(jsonMessage)
} else if (method === SessionRequest.methods.signTransaction.name) {
if (event.params.request.params.length == 0) {
return null
}
let tx = event.params.request.params[0]
return SessionRequest.methods.signTransaction.buildDataObject(tx)
} else if (method === SessionRequest.methods.sendTransaction.name) {
if (event.params.request.params.length == 0) {
return null
}
let tx = event.params.request.params[0]
return SessionRequest.methods.sendTransaction.buildDataObject(tx)
} else {
return null
}
}
function lookupSession(topicToLookup, callback) {
sdk.getActiveSessions((res) => {
Object.keys(res).forEach((topic) => {
if (topic === topicToLookup) {
let session = res[topic]
callback(session)
}
})
})
}
function executeSessionRequest(request, password, pin, payload) {
if (!SessionRequest.getSupportedMethods().includes(request.method)) {
console.error("Unsupported method to execute: ", request.method)
return
}
if (password !== "") {
let actionResult = ""
if (request.method === SessionRequest.methods.sign.name) {
actionResult = store.signMessageUnsafe(request.topic, request.id,
request.account.address, password,
SessionRequest.methods.personalSign.getMessageFromData(request.data))
} else if (request.method === SessionRequest.methods.personalSign.name) {
actionResult = store.signMessage(request.topic, request.id,
request.account.address, password,
SessionRequest.methods.personalSign.getMessageFromData(request.data))
} else if (request.method === SessionRequest.methods.signTypedData_v4.name ||
request.method === SessionRequest.methods.signTypedData.name)
{
let legacy = request.method === SessionRequest.methods.signTypedData.name
actionResult = store.safeSignTypedData(request.topic, request.id,
request.account.address, password,
SessionRequest.methods.signTypedData.getMessageFromData(request.data),
request.network.chainId, legacy)
} else if (d.isTransactionMethod(request.method)) {
let txObj = d.getTxObject(request.method, request.data)
if (!!payload) {
let feesInfoJson = payload
let hexFeesJson = root.store.convertFeesInfoToHex(feesInfoJson)
if (!!hexFeesJson) {
let feesInfo = JSON.parse(hexFeesJson)
if (feesInfo.maxFeePerGas) {
txObj.maxFeePerGas = feesInfo.maxFeePerGas
}
if (feesInfo.maxPriorityFeePerGas) {
txObj.maxPriorityFeePerGas = feesInfo.maxPriorityFeePerGas
}
}
delete txObj.gasLimit
delete txObj.gasPrice
}
// Remove nonce from txObj to be auto-filled by the wallet
delete txObj.nonce
if (request.method === SessionRequest.methods.signTransaction.name) {
actionResult = store.signTransaction(request.topic, request.id,
request.account.address, request.network.chainId, password, txObj)
} else if (request.method === SessionRequest.methods.sendTransaction.name) {
actionResult = store.sendTransaction(request.topic, request.id,
request.account.address, request.network.chainId, password, txObj)
}
}
let isSuccessful = (actionResult != "")
if (isSuccessful) {
// acceptSessionRequest will trigger an sdk.sessionRequestUserAnswerResult signal
sdk.acceptSessionRequest(request.topic, request.id, actionResult)
} else {
root.sessionRequestResult(request, isSuccessful)
}
} else if (pin !== "") {
console.debug("TODO #15097 sign message using keycard: ", request.data)
} else {
console.error("No password or pin provided to sign message")
}
}
// Returns Constants.TransactionEstimatedTime
function getEstimatedTimeInterval(data, method, chainId) {
let tx = {}
let maxFeePerGas = ""
if (d.isTransactionMethod(method)) {
tx = d.getTxObject(method, data)
// Empty string instructs getEstimatedTime to fetch the blockchain value
if (!!tx.maxFeePerGas) {
maxFeePerGas = tx.maxFeePerGas
} else if (!!tx.gasPrice) {
maxFeePerGas = tx.gasPrice
}
}
return root.store.getEstimatedTime(chainId, maxFeePerGas)
}
// Returns {
// maxFees -> Big number in Gwei
// maxFeePerGas
// maxPriorityFeePerGas
// gasPrice
// }
function getEstimatedMaxFees(data, method, chainId, mainNetChainId) {
let tx = {}
if (d.isTransactionMethod(method)) {
tx = d.getTxObject(method, data)
}
let BigOps = SQUtils.AmountsArithmetic
let gasLimit = BigOps.fromString("21000")
let gasPrice, maxFeePerGas, maxPriorityFeePerGas
let l1GasFee = BigOps.fromNumber(0)
// Beware, the tx values are standard blockchain hex big number values; the fees values are nim's float64 values, hence the complex conversions
if (!!tx.maxFeePerGas && !!tx.maxPriorityFeePerGas) {
let maxFeePerGasDec = root.store.hexToDec(tx.maxFeePerGas)
gasPrice = BigOps.fromString(maxFeePerGasDec)
// Source fees info from the incoming transaction for when we process it
maxFeePerGas = maxFeePerGasDec
let maxPriorityFeePerGasDec = root.store.hexToDec(tx.maxPriorityFeePerGas)
maxPriorityFeePerGas = maxPriorityFeePerGasDec
} else {
let fees = root.store.getSuggestedFees(chainId)
maxPriorityFeePerGas = fees.maxPriorityFeePerGas
if (fees.eip1559Enabled) {
if (!!fees.maxFeePerGasM) {
gasPrice = BigOps.fromNumber(fees.maxFeePerGasM)
maxFeePerGas = fees.maxFeePerGasM
} else if(!!tx.maxFeePerGas) {
let maxFeePerGasDec = root.store.hexToDec(tx.maxFeePerGas)
gasPrice = BigOps.fromString(maxFeePerGasDec)
maxFeePerGas = maxFeePerGasDec
} else {
console.error("Error fetching maxFeePerGas from fees or tx objects")
return
}
} else {
if (!!fees.gasPrice) {
gasPrice = BigOps.fromNumber(fees.gasPrice)
} else {
console.error("Error fetching suggested fees")
return
}
}
l1GasFee = BigOps.fromNumber(fees.l1GasFee)
}
let maxFees = BigOps.times(gasLimit, gasPrice)
return {maxFees, maxFeePerGas, maxPriorityFeePerGas, gasPrice, l1GasFee}
}
// Returned values are Big numbers
function getEstimatedFeesStatus(data, method, chainId, mainNetChainId) {
let BigOps = SQUtils.AmountsArithmetic
let feesInfo = getEstimatedMaxFees(data, method, chainId, mainNetChainId)
let totalMaxFees = BigOps.sum(feesInfo.maxFees, feesInfo.l1GasFee)
let maxFeesEth = BigOps.div(totalMaxFees, BigOps.fromNumber(1, 9))
let maxFeesEthStr = maxFeesEth.toString()
let fiatMaxFeesStr = root.currenciesStore.getFiatValue(maxFeesEthStr, Constants.ethToken)
let fiatMaxFees = BigOps.fromString(fiatMaxFeesStr)
let symbol = root.currenciesStore.currentCurrencySymbol
return {fiatMaxFees, maxFeesEth, symbol, feesInfo}
}
function getBalanceInEth(balances, address, chainId) {
const BigOps = SQUtils.AmountsArithmetic
let accEth = SQUtils.ModelUtils.getFirstModelEntryIf(balances, (balance) => {
return balance.account.toLowerCase() === address.toLowerCase() && balance.chainId === chainId
})
if (!accEth) {
console.error("Error balance lookup for account ", address, " on chain ", chainId)
return null
}
let accountFundsWei = BigOps.fromString(accEth.balance)
return BigOps.div(accountFundsWei, BigOps.fromNumber(1, 18))
}
// Returns {haveEnoughForFees, haveEnoughFunds} and true in case of error not to block request
function checkFundsStatus(maxFees, l1GasFee, address, chainId, mainNetChainId, valueEth) {
let BigOps = SQUtils.AmountsArithmetic
let haveEnoughForFees = true
let haveEnoughFunds = true
let token = SQUtils.ModelUtils.getByKey(root.assetsStore.groupedAccountAssetsModel, "tokensKey", Constants.ethToken)
if (!token || !token.balances) {
console.error("Error token balances lookup for ETH")
return {haveEnoughForFees, haveEnoughFunds}
}
let chainBalance = getBalanceInEth(token.balances, address, chainId)
if (!chainBalance) {
console.error("Error fetching chain balance")
return {haveEnoughForFees, haveEnoughFunds}
}
haveEnoughFunds = BigOps.cmp(chainBalance, valueEth) >= 0
if (haveEnoughFunds) {
chainBalance = BigOps.sub(chainBalance, valueEth)
if (chainId == mainNetChainId) {
const finalFees = BigOps.sum(maxFees, l1GasFee)
let feesEth = BigOps.div(finalFees, BigOps.fromNumber(1, 9))
haveEnoughForFees = BigOps.cmp(chainBalance, feesEth) >= 0
} else {
const feesChain = BigOps.div(maxFees, BigOps.fromNumber(1, 9))
const haveEnoughOnChain = BigOps.cmp(chainBalance, feesChain) >= 0
const mainBalance = getBalanceInEth(token.balances, address, mainNetChainId)
if (!mainBalance) {
console.error("Error fetching mainnet balance")
return {haveEnoughForFees, haveEnoughFunds}
}
const feesMain = BigOps.div(l1GasFee, BigOps.fromNumber(1, 9))
const haveEnoughOnMain = BigOps.cmp(mainBalance, feesMain) >= 0
haveEnoughForFees = haveEnoughOnChain && haveEnoughOnMain
}
} else {
haveEnoughForFees = false
}
return {haveEnoughForFees, haveEnoughFunds}
}
function isTransactionMethod(method) {
return method === SessionRequest.methods.signTransaction.name
|| method === SessionRequest.methods.sendTransaction.name
}
function getTxObject(method, data) {
let tx
if (method === SessionRequest.methods.signTransaction.name) {
tx = SessionRequest.methods.signTransaction.getTxObjFromData(data)
} else if (method === SessionRequest.methods.sendTransaction.name) {
tx = SessionRequest.methods.sendTransaction.getTxObjFromData(data)
} else {
console.error("Not a transaction method")
}
return tx
}
// returns {
// preparedData,
// value // null or ETH Big number
// }
function prepareData(method, data) {
let payload = null
switch(method) {
case SessionRequest.methods.personalSign.name: {
payload = SessionRequest.methods.personalSign.getMessageFromData(data)
break
}
case SessionRequest.methods.sign.name: {
payload = SessionRequest.methods.sign.getMessageFromData(data)
break
}
case SessionRequest.methods.signTypedData_v4.name: {
const stringPayload = SessionRequest.methods.signTypedData_v4.getMessageFromData(data)
payload = JSON.stringify(JSON.parse(stringPayload), null, 2)
break
}
case SessionRequest.methods.signTypedData.name: {
const stringPayload = SessionRequest.methods.signTypedData.getMessageFromData(data)
payload = JSON.stringify(JSON.parse(stringPayload), null, 2)
break
}
case SessionRequest.methods.signTransaction.name:
case SessionRequest.methods.sendTransaction.name:
// For transactions we process the data in a different way as follows
break
default:
console.error("Unhandled method", method)
break;
}
let value = SQUtils.AmountsArithmetic.fromNumber(0)
if (d.isTransactionMethod(method)) {
let txObj = d.getTxObject(method, data)
let tx = Object.assign({}, txObj)
if (tx.value) {
value = hexToEth(tx.value)
tx.value = value.toString()
}
if (tx.maxFeePerGas) {
tx.maxFeePerGas = hexToGwei(tx.maxFeePerGas).toString()
}
if (tx.maxPriorityFeePerGas) {
tx.maxPriorityFeePerGas = hexToGwei(tx.maxPriorityFeePerGas).toString()
}
if (tx.gasPrice) {
tx.gasPrice = hexToGwei(tx.gasPrice)
}
if (tx.gasLimit) {
tx.gasLimit = parseInt(root.store.hexToDec(tx.gasLimit))
}
if (tx.nonce) {
tx.nonce = parseInt(root.store.hexToDec(tx.nonce))
}
payload = JSON.stringify(tx, null, 2)
}
return {
preparedData: payload,
value: value
}
}
function hexToEth(value) {
return hexToEthDenomination(value, "eth")
}
function hexToGwei(value) {
return hexToEthDenomination(value, "gwei")
}
function hexToEthDenomination(value, ethUnit) {
let unitMapping = {
"gwei": 9,
"eth": 18
}
let BigOps = SQUtils.AmountsArithmetic
let decValue = root.store.hexToDec(value)
if (!!decValue) {
return BigOps.div(BigOps.fromNumber(decValue), BigOps.fromNumber(1, unitMapping[ethUnit]))
}
return BigOps.fromNumber(0)
}
}
/// The queue is used to ensure that the events are processed in the order they are received but they could be
/// processed handled randomly on user intervention through activity center
SessionRequestsModel {
id: requests
}
Component {
id: sessionRequestComponent
SessionRequestResolved {
}
}
}