277 lines
9.2 KiB
Nim
277 lines
9.2 KiB
Nim
import ens, wallet, permissions, utils
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import ../eventemitter
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import ./types/[setting]
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import utils
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import libstatus/accounts
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import libstatus/core
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import libstatus/settings as status_settings
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import json, json_serialization, sets, strutils
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import chronicles
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import nbaser
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import stew/byteutils
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from base32 import nil
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const HTTPS_SCHEME* = "https"
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const IPFS_GATEWAY* = ".infura.status.im"
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const SWARM_GATEWAY* = "swarm-gateways.net"
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const base58* = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
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logScope:
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topics = "provider-model"
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type
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RequestTypes {.pure.} = enum
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Web3SendAsyncReadOnly = "web3-send-async-read-only",
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HistoryStateChanged = "history-state-changed",
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APIRequest = "api-request"
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Unknown = "unknown"
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ResponseTypes {.pure.} = enum
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Web3SendAsyncCallback = "web3-send-async-callback",
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APIResponse = "api-response",
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Web3ResponseError = "web3-response-error"
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type
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Payload = ref object
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id: JsonNode
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rpcMethod: string
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Web3SendAsyncReadOnly = ref object
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messageId: JsonNode
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payload: Payload
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request: string
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hostname: string
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APIRequest = ref object
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isAllowed: bool
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messageId: JsonNode
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permission: Permission
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hostname: string
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const AUTH_METHODS = toHashSet(["eth_accounts", "eth_coinbase", "eth_sendTransaction", "eth_sign", "keycard_signTypedData", "eth_signTypedData", "eth_signTypedData_v3", "personal_sign", "personal_ecRecover"])
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const SIGN_METHODS = toHashSet(["eth_sign", "personal_sign", "eth_signTypedData", "eth_signTypedData_v3"])
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const ACC_METHODS = toHashSet(["eth_accounts", "eth_coinbase"])
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type ProviderModel* = ref object
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events*: EventEmitter
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permissions*: PermissionsModel
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proc newProviderModel*(events: EventEmitter, permissions: PermissionsModel): ProviderModel =
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result = ProviderModel()
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result.events = events
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result.permissions = permissions
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proc requestType(message: string): RequestTypes =
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let data = message.parseJson
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result = RequestTypes.Unknown
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try:
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result = parseEnum[RequestTypes](data["type"].getStr())
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except:
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warn "Unknown request type received", value=data["permission"].getStr()
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proc toWeb3SendAsyncReadOnly(message: string): Web3SendAsyncReadOnly =
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let data = message.parseJson
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result = Web3SendAsyncReadOnly(
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messageId: data["messageId"],
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request: $data["payload"],
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hostname: data{"hostname"}.getStr(),
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payload: Payload(
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id: data["payload"]{"id"},
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rpcMethod: data["payload"]["method"].getStr()
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)
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)
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proc toAPIRequest(message: string): APIRequest =
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let data = message.parseJson
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result = APIRequest(
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messageId: data["messageId"],
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isAllowed: data{"isAllowed"}.getBool(),
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permission: data["permission"].getStr().toPermission(),
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hostname: data{"hostname"}.getStr()
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)
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proc process(self: ProviderModel, data: Web3SendAsyncReadOnly): string =
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if AUTH_METHODS.contains(data.payload.rpcMethod) and not self.permissions.hasPermission(data.hostname, Permission.Web3):
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": {
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"code": 4100
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}
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}
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if data.payload.rpcMethod == "eth_sendTransaction":
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try:
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let request = data.request.parseJson
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let fromAddress = request["params"][0]["from"].getStr()
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let to = request["params"][0]{"to"}.getStr()
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let value = if (request["params"][0]["value"] != nil):
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request["params"][0]["value"].getStr()
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else:
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"0"
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let password = request["password"].getStr()
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let selectedGasLimit = request["selectedGasLimit"].getStr()
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let selectedGasPrice = request["selectedGasPrice"].getStr()
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let txData = if (request["params"][0].hasKey("data") and request["params"][0]["data"].kind != JNull):
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request["params"][0]["data"].getStr()
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else:
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""
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var success: bool
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var errorMessage = ""
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var response = ""
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var validInput: bool = true
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try:
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validateTransactionInput(fromAddress, to, "", value, selectedGasLimit, selectedGasPrice, txData, "dummy")
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except Exception as e:
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validInput = false
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success = false
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errorMessage = e.msg
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if validInput:
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# TODO make this async
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response = wallet.sendTransaction(fromAddress, to, value, selectedGasLimit, selectedGasPrice, password, success, txData)
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errorMessage = if not success:
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if response == "":
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"web3-response-error"
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else:
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response
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else:
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""
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": errorMessage,
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"result": {
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"jsonrpc": "2.0",
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"id": data.payload.id,
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"result": if (success): response else: ""
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}
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}
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except Exception as e:
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error "Error sending the transaction", msg = e.msg
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": {
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"code": 4100,
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"message": e.msg
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}
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}
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if SIGN_METHODS.contains(data.payload.rpcMethod):
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try:
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let request = data.request.parseJson
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var params = request["params"]
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let password = hashPassword(request["password"].getStr())
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let dappAddress = status_settings.getSetting[string](Setting.DappsAddress)
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var rpcResult = "{}"
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case data.payload.rpcMethod:
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of "eth_signTypedData", "eth_signTypedData_v3":
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rpcResult = signTypedData(params[1].getStr(), dappAddress, password)
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else:
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rpcResult = signMessage($ %* {
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"data": params[0].getStr(),
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"password": password,
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"account": dappAddress
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})
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let jsonRpcResult = rpcResult.parseJson
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let success: bool = not jsonRpcResult.hasKey("error")
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let errorMessage = if success: "" else: jsonRpcResult["error"]{"message"}.getStr()
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let response = if success: jsonRpcResult["result"].getStr() else: ""
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": errorMessage,
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"result": {
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"jsonrpc": "2.0",
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"id": if data.payload.id == nil: newJNull() else: data.payload.id,
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"result": if (success): response else: ""
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}
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}
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except Exception as e:
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error "Error signing message", msg = e.msg
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": {
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"code": 4100,
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"message": e.msg
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}
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}
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if ACC_METHODS.contains(data.payload.rpcMethod):
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let dappAddress = status_settings.getSetting[string](Setting.DappsAddress)
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"result": {
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"jsonrpc": "2.0",
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"id": data.payload.id,
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"result": if data.payload.rpcMethod == "eth_coinbase": newJString(dappAddress) else: %*[dappAddress]
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}
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}
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let rpcResult = callRPC(data.request)
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return $ %* {
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"type": ResponseTypes.Web3SendAsyncCallback,
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"messageId": data.messageId,
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"error": (if rpcResult == "": newJString("web3-response-error") else: newJNull()),
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"result": rpcResult.parseJson
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}
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proc process*(self: ProviderModel, data: APIRequest): string =
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var value:JsonNode = case data.permission
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of Permission.Web3: %* [status_settings.getSetting[string](Setting.DappsAddress, "0x0000000000000000000000000000000000000000")]
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of Permission.ContactCode: %* status_settings.getSetting[string](Setting.PublicKey, "0x0")
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of Permission.Unknown: newJNull()
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let isAllowed = data.isAllowed and data.permission != Permission.Unknown
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info "API request received", host=data.hostname, value=data.permission, isAllowed
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if isAllowed: self.permissions.addPermission(data.hostname, data.permission)
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return $ %* {
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"type": ResponseTypes.APIResponse,
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"isAllowed": isAllowed,
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"permission": data.permission,
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"messageId": data.messageId,
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"data": value
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}
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proc postMessage*(self: ProviderModel, message: string): string =
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case message.requestType():
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of RequestTypes.Web3SendAsyncReadOnly: self.process(message.toWeb3SendAsyncReadOnly())
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of RequestTypes.HistoryStateChanged: """{"type":"TODO-IMPLEMENT-THIS"}""" ############# TODO:
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of RequestTypes.APIRequest: self.process(message.toAPIRequest())
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else: """{"type":"TODO-IMPLEMENT-THIS"}""" ##################### TODO:
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proc ensResourceURL*(self: ProviderModel, ens: string, url: string): (string, string, string, string, bool) =
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let contentHash = contenthash(ens)
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if contentHash == "": # ENS does not have a content hash
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return (url, url, HTTPS_SCHEME, "", false)
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let decodedHash = contentHash.decodeENSContentHash()
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case decodedHash[0]:
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of ENSType.IPFS:
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let base32Hash = base32.encode(string.fromBytes(base58.decode(decodedHash[1]))).toLowerAscii().replace("=", "")
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result = (url, base32Hash & IPFS_GATEWAY, HTTPS_SCHEME, "", true)
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of ENSType.SWARM:
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result = (url, SWARM_GATEWAY, HTTPS_SCHEME, "/bzz:/" & decodedHash[1] & "/", true)
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of ENSType.IPNS:
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result = (url, decodedHash[1], HTTPS_SCHEME, "", true)
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else:
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warn "Unknown content for", ens, contentHash
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