require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o. */ /** @file abi.js * @authors: * Marek Kotewicz * Gav Wood * @date 2014 */ // TODO: is these line is supposed to be here? if ("build" !== 'build') {/* var BigNumber = require('bignumber.js'); // jshint ignore:line */} var web3 = require('./web3'); // jshint ignore:line BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN }); var ETH_PADDING = 32; /// Finds first index of array element matching pattern /// @param array /// @param callback pattern /// @returns index of element var findIndex = function (array, callback) { var end = false; var i = 0; for (; i < array.length && !end; i++) { end = callback(array[i]); } return end ? i - 1 : -1; }; /// @returns a function that is used as a pattern for 'findIndex' var findMethodIndex = function (json, methodName) { return findIndex(json, function (method) { return method.name === methodName; }); }; /// @param string string to be padded /// @param number of characters that result string should have /// @param sign, by default 0 /// @returns right aligned string var padLeft = function (string, chars, sign) { return new Array(chars - string.length + 1).join(sign ? sign : "0") + string; }; /// @param expected type prefix (string) /// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false var prefixedType = function (prefix) { return function (type) { return type.indexOf(prefix) === 0; }; }; /// @param expected type name (string) /// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false var namedType = function (name) { return function (type) { return name === type; }; }; var arrayType = function (type) { return type.slice(-2) === '[]'; }; /// Formats input value to byte representation of int /// If value is negative, return it's two's complement /// If the value is floating point, round it down /// @returns right-aligned byte representation of int var formatInputInt = function (value) { var padding = ETH_PADDING * 2; if (value instanceof BigNumber || typeof value === 'number') { if (typeof value === 'number') value = new BigNumber(value); value = value.round(); if (value.lessThan(0)) value = new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16).plus(value).plus(1); value = value.toString(16); } else if (value.indexOf('0x') === 0) value = value.substr(2); else if (typeof value === 'string') value = formatInputInt(new BigNumber(value)); else value = (+value).toString(16); return padLeft(value, padding); }; /// Formats input value to byte representation of string /// @returns left-algined byte representation of string var formatInputString = function (value) { return web3.fromAscii(value, ETH_PADDING).substr(2); }; /// Formats input value to byte representation of bool /// @returns right-aligned byte representation bool var formatInputBool = function (value) { return '000000000000000000000000000000000000000000000000000000000000000' + (value ? '1' : '0'); }; /// Formats input value to byte representation of real /// Values are multiplied by 2^m and encoded as integers /// @returns byte representation of real var formatInputReal = function (value) { return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128))); }; var dynamicTypeBytes = function (type, value) { // TODO: decide what to do with array of strings if (arrayType(type) || prefixedType('string')(type)) return formatInputInt(value.length); return ""; }; /// Setups input formatters for solidity types /// @returns an array of input formatters var setupInputTypes = function () { return [ { type: prefixedType('uint'), format: formatInputInt }, { type: prefixedType('int'), format: formatInputInt }, { type: prefixedType('hash'), format: formatInputInt }, { type: prefixedType('string'), format: formatInputString }, { type: prefixedType('real'), format: formatInputReal }, { type: prefixedType('ureal'), format: formatInputReal }, { type: namedType('address'), format: formatInputInt }, { type: namedType('bool'), format: formatInputBool } ]; }; var inputTypes = setupInputTypes(); /// Formats input params to bytes /// @param contract json abi /// @param name of the method that we want to use /// @param array of params that will be formatted to bytes /// @returns bytes representation of input params var toAbiInput = function (json, methodName, params) { var bytes = ""; var index = findMethodIndex(json, methodName); if (index === -1) { return; } var method = json[index]; var padding = ETH_PADDING * 2; /// first we iterate in search for dynamic method.inputs.forEach(function (input, index) { bytes += dynamicTypeBytes(input.type, params[index]); }); method.inputs.forEach(function (input, i) { var typeMatch = false; for (var j = 0; j < inputTypes.length && !typeMatch; j++) { typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]); } if (!typeMatch) { console.error('input parser does not support type: ' + method.inputs[i].type); } var formatter = inputTypes[j - 1].format; var toAppend = ""; if (arrayType(method.inputs[i].type)) toAppend = params[i].reduce(function (acc, curr) { return acc + formatter(curr); }, ""); else toAppend = formatter(params[i]); bytes += toAppend; }); return bytes; }; /// Formats input right-aligned input bytes to int /// @returns right-aligned input bytes formatted to int var formatOutputInt = function (value) { // check if it's negative number // it it is, return two's complement var firstBit = new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1); if (firstBit === '1') { return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1); } return new BigNumber(value, 16); }; /// Formats big right-aligned input bytes to uint /// @returns right-aligned input bytes formatted to uint var formatOutputUInt = function (value) { return new BigNumber(value, 16); }; /// @returns right-aligned input bytes formatted to hex var formatOutputHash = function (value) { return "0x" + value; }; /// @returns right-aligned input bytes formatted to bool var formatOutputBool = function (value) { return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false; }; /// @returns left-aligned input bytes formatted to ascii string var formatOutputString = function (value) { return web3.toAscii(value); }; /// @returns right-aligned input bytes formatted to address var formatOutputAddress = function (value) { return "0x" + value.slice(value.length - 40, value.length); }; var dynamicBytesLength = function (type) { if (arrayType(type) || prefixedType('string')(type)) return ETH_PADDING * 2; return 0; }; /// Setups output formaters for solidity types /// @returns an array of output formatters var setupOutputTypes = function () { return [ { type: prefixedType('uint'), format: formatOutputUInt }, { type: prefixedType('int'), format: formatOutputInt }, { type: prefixedType('hash'), format: formatOutputHash }, { type: prefixedType('string'), format: formatOutputString }, { type: prefixedType('real'), format: formatOutputInt }, { type: prefixedType('ureal'), format: formatOutputInt }, { type: namedType('address'), format: formatOutputAddress }, { type: namedType('bool'), format: formatOutputBool } ]; }; var outputTypes = setupOutputTypes(); /// Formats output bytes back to param list /// @param contract json abi /// @param name of the method that we want to use /// @param bytes representtion of output /// @returns array of output params var fromAbiOutput = function (json, methodName, output) { var index = findMethodIndex(json, methodName); if (index === -1) { return; } output = output.slice(2); var result = []; var method = json[index]; var padding = ETH_PADDING * 2; var dynamicPartLength = method.outputs.reduce(function (acc, curr) { return acc + dynamicBytesLength(curr.type); }, 0); var dynamicPart = output.slice(0, dynamicPartLength); output = output.slice(dynamicPartLength); method.outputs.forEach(function (out, i) { var typeMatch = false; for (var j = 0; j < outputTypes.length && !typeMatch; j++) { typeMatch = outputTypes[j].type(method.outputs[i].type); } if (!typeMatch) { console.error('output parser does not support type: ' + method.outputs[i].type); } var formatter = outputTypes[j - 1].format; if (arrayType(method.outputs[i].type)) { var size = formatOutputUInt(dynamicPart.slice(0, padding)); dynamicPart = dynamicPart.slice(padding); var array = []; for (var k = 0; k < size; k++) { array.push(formatter(output.slice(0, padding))); output = output.slice(padding); } result.push(array); } else if (prefixedType('string')(method.outputs[i].type)) { dynamicPart = dynamicPart.slice(padding); result.push(formatter(output.slice(0, padding))); output = output.slice(padding); } else { result.push(formatter(output.slice(0, padding))); output = output.slice(padding); } }); return result; }; /// @param json abi for contract /// @returns input parser object for given json abi var inputParser = function (json) { var parser = {}; json.forEach(function (method) { parser[method.name] = function () { var params = Array.prototype.slice.call(arguments); return toAbiInput(json, method.name, params); }; }); return parser; }; /// @param json abi for contract /// @returns output parser for given json abi var outputParser = function (json) { var parser = {}; json.forEach(function (method) { parser[method.name] = function (output) { return fromAbiOutput(json, method.name, output); }; }); return parser; }; /// @param json abi for contract /// @param method name for which we want to get method signature /// @returns (promise) contract method signature for method with given name var methodSignature = function (json, name) { var method = json[findMethodIndex(json, name)]; var result = name + '('; var inputTypes = method.inputs.map(function (inp) { return inp.type; }); result += inputTypes.join(','); result += ')'; return web3.sha3(web3.fromAscii(result)); }; module.exports = { inputParser: inputParser, outputParser: outputParser, methodSignature: methodSignature }; },{"./web3":8}],2:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file autoprovider.js * @authors: * Marek Kotewicz * Marian Oancea * @date 2014 */ /* * @brief if qt object is available, uses QtProvider, * if not tries to connect over websockets * if it fails, it uses HttpRpcProvider */ var web3 = require('./web3'); // jshint ignore:line if ("build" !== 'build') {/* var WebSocket = require('ws'); // jshint ignore:line */} /** * AutoProvider object prototype is implementing 'provider protocol' * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc) * First it checkes if we are ethereum browser (if navigator.qt object is available) * if yes, we are using QtProvider * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default) * if it's not possible, we are using httprpc provider (http://localhost:8080) * The constructor allows you to specify uris on which we are trying to connect over http or websockets * You can do that by passing objects with fields httrpc and websockets */ var AutoProvider = function (userOptions) { if (web3.haveProvider()) { return; } // before we determine what provider we are, we have to cache request this.sendQueue = []; this.onmessageQueue = []; if (navigator.qt) { this.provider = new web3.providers.QtProvider(); return; } userOptions = userOptions || {}; var options = { httprpc: userOptions.httprpc || 'http://localhost:8080', websockets: userOptions.websockets || 'ws://localhost:40404/eth' }; var self = this; var closeWithSuccess = function (success) { ws.close(); if (success) { self.provider = new web3.providers.WebSocketProvider(options.websockets); } else { self.provider = new web3.providers.HttpRpcProvider(options.httprpc); self.poll = self.provider.poll.bind(self.provider); } self.sendQueue.forEach(function (payload) { self.provider.send(payload); }); self.onmessageQueue.forEach(function (handler) { self.provider.onmessage = handler; }); }; var ws = new WebSocket(options.websockets); ws.onopen = function() { closeWithSuccess(true); }; ws.onerror = function() { closeWithSuccess(false); }; }; /// Sends message forward to the provider, that is being used /// if provider is not yet set, enqueues the message AutoProvider.prototype.send = function (payload) { if (this.provider) { this.provider.send(payload); return; } this.sendQueue.push(payload); }; /// On incoming message sends the message to the provider that is currently being used Object.defineProperty(AutoProvider.prototype, 'onmessage', { set: function (handler) { if (this.provider) { this.provider.onmessage = handler; return; } this.onmessageQueue.push(handler); } }); module.exports = AutoProvider; },{"./web3":8}],3:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file contract.js * @authors: * Marek Kotewicz * @date 2014 */ var web3 = require('./web3'); // jshint ignore:line var abi = require('./abi'); /// method signature length in bytes var ETH_METHOD_SIGNATURE_LENGTH = 4; /** * This method should be called when we want to call / transact some solidity method from javascript * it returns an object which has same methods available as solidity contract description * usage example: * * var abi = [{ * name: 'myMethod', * inputs: [{ name: 'a', type: 'string' }], * outputs: [{name: 'd', type: 'string' }] * }]; // contract abi * * var myContract = web3.eth.contract('0x0123123121', abi); // creation of contract object * * myContract.myMethod('this is test string param for call').call(); // myMethod call * myContract.myMethod('this is test string param for transact').transact() // myMethod transact * * @param address - address of the contract, which should be called * @param desc - abi json description of the contract, which is being created * @returns contract object */ var contract = function (address, desc) { var inputParser = abi.inputParser(desc); var outputParser = abi.outputParser(desc); var contract = {}; desc.forEach(function (method) { contract[method.name] = function () { var params = Array.prototype.slice.call(arguments); var parsed = inputParser[method.name].apply(null, params); var onSuccess = function (result) { return outputParser[method.name](result); }; return { call: function (extra) { extra = extra || {}; extra.to = address; return abi.methodSignature(desc, method.name).then(function (signature) { extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed; return web3.eth.call(extra).then(onSuccess); }); }, transact: function (extra) { extra = extra || {}; extra.to = address; return abi.methodSignature(desc, method.name).then(function (signature) { extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed; return web3.eth.transact(extra).then(onSuccess); }); } }; }; }); return contract; }; module.exports = contract; },{"./abi":1,"./web3":8}],4:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file filter.js * @authors: * Jeffrey Wilcke * Marek Kotewicz * Marian Oancea * Gav Wood * @date 2014 */ var web3 = require('./web3'); // jshint ignore:line /// should be used when we want to watch something /// it's using inner polling mechanism and is notified about changes var Filter = function(options, impl) { this.impl = impl; this.callbacks = []; var self = this; this.promise = impl.newFilter(options); this.promise.then(function (id) { self.id = id; web3.on(impl.changed, id, self.trigger.bind(self)); web3.provider.startPolling({call: impl.changed, args: [id]}, id); }); }; /// alias for changed* Filter.prototype.arrived = function(callback) { this.changed(callback); }; /// gets called when there is new eth/shh message Filter.prototype.changed = function(callback) { var self = this; this.promise.then(function(id) { self.callbacks.push(callback); }); }; /// trigger calling new message from people Filter.prototype.trigger = function(messages) { for(var i = 0; i < this.callbacks.length; i++) { this.callbacks[i].call(this, messages); } }; /// should be called to uninstall current filter Filter.prototype.uninstall = function() { var self = this; this.promise.then(function (id) { self.impl.uninstallFilter(id); web3.provider.stopPolling(id); web3.off(impl.changed, id); }); }; /// should be called to manually trigger getting latest messages from the client Filter.prototype.messages = function() { var self = this; return this.promise.then(function (id) { return self.impl.getMessages(id); }); }; /// alias for messages Filter.prototype.logs = function () { return this.messages(); }; module.exports = Filter; },{"./web3":8}],5:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file httprpc.js * @authors: * Marek Kotewicz * Marian Oancea * @date 2014 */ // TODO: is these line is supposed to be here? if ("build" !== 'build') {/* var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line */} /** * HttpRpcProvider object prototype is implementing 'provider protocol' * Should be used when we want to connect to ethereum backend over http && jsonrpc * It's compatible with cpp client * The contructor allows to specify host uri * This provider is using in-browser polling mechanism */ var HttpRpcProvider = function (host) { this.handlers = []; this.host = host; }; /// Transforms inner message to proper jsonrpc object /// @param inner message object /// @returns jsonrpc object function formatJsonRpcObject(object) { return { jsonrpc: '2.0', method: object.call, params: object.args, id: object._id }; } /// Transforms jsonrpc object to inner message /// @param incoming jsonrpc message /// @returns inner message object function formatJsonRpcMessage(message) { var object = JSON.parse(message); return { _id: object.id, data: object.result, error: object.error }; } /// Prototype object method /// Asynchronously sends request to server /// @param payload is inner message object /// @param cb is callback which is being called when response is comes back HttpRpcProvider.prototype.sendRequest = function (payload, cb) { var data = formatJsonRpcObject(payload); var request = new XMLHttpRequest(); request.open("POST", this.host, true); request.send(JSON.stringify(data)); request.onreadystatechange = function () { if (request.readyState === 4 && cb) { cb(request); } }; }; /// Prototype object method /// Should be called when we want to send single api request to server /// Asynchronous /// On response it passes message to handlers /// @param payload is inner message object HttpRpcProvider.prototype.send = function (payload) { var self = this; this.sendRequest(payload, function (request) { self.handlers.forEach(function (handler) { handler.call(self, formatJsonRpcMessage(request.responseText)); }); }); }; /// Prototype object method /// Should be called only for polling requests /// Asynchronous /// On response it passege message to handlers, but only if message's result is true or not empty array /// Otherwise response is being silently ignored /// @param payload is inner message object /// @id is id of poll that we are calling HttpRpcProvider.prototype.poll = function (payload, id) { var self = this; this.sendRequest(payload, function (request) { var parsed = JSON.parse(request.responseText); if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) { return; } self.handlers.forEach(function (handler) { handler.call(self, {_event: payload.call, _id: id, data: parsed.result}); }); }); }; /// Prototype object property /// Should be used to set message handlers for this provider Object.defineProperty(HttpRpcProvider.prototype, "onmessage", { set: function (handler) { this.handlers.push(handler); } }); module.exports = HttpRpcProvider; },{}],6:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file providermanager.js * @authors: * Jeffrey Wilcke * Marek Kotewicz * Marian Oancea * Gav Wood * @date 2014 */ var web3 = require('./web3'); // jshint ignore:line /** * Provider manager object prototype * It's responsible for passing messages to providers * If no provider is set it's responsible for queuing requests * It's also responsible for polling the ethereum node for incoming messages * Default poll timeout is 12 seconds * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling, * and provider manager polling mechanism is not used */ var ProviderManager = function() { this.queued = []; this.polls = []; this.ready = false; this.provider = undefined; this.id = 1; var self = this; var poll = function () { if (self.provider && self.provider.poll) { self.polls.forEach(function (data) { data.data._id = self.id; self.id++; self.provider.poll(data.data, data.id); }); } setTimeout(poll, 12000); }; poll(); }; /// sends outgoing requests, if provider is not available, enqueue the request ProviderManager.prototype.send = function(data, cb) { data._id = this.id; if (cb) { web3._callbacks[data._id] = cb; } data.args = data.args || []; this.id++; if(this.provider !== undefined) { this.provider.send(data); } else { console.warn("provider is not set"); this.queued.push(data); } }; /// setups provider, which will be used for sending messages ProviderManager.prototype.set = function(provider) { if(this.provider !== undefined && this.provider.unload !== undefined) { this.provider.unload(); } this.provider = provider; this.ready = true; }; /// resends queued messages ProviderManager.prototype.sendQueued = function() { for(var i = 0; this.queued.length; i++) { // Resend this.send(this.queued[i]); } }; /// @returns true if the provider i properly set ProviderManager.prototype.installed = function() { return this.provider !== undefined; }; /// this method is only used, when we do not have native qt bindings and have to do polling on our own /// should be callled, on start watching for eth/shh changes ProviderManager.prototype.startPolling = function (data, pollId) { if (!this.provider || !this.provider.poll) { return; } this.polls.push({data: data, id: pollId}); }; /// should be called to stop polling for certain watch changes ProviderManager.prototype.stopPolling = function (pollId) { for (var i = this.polls.length; i--;) { var poll = this.polls[i]; if (poll.id === pollId) { this.polls.splice(i, 1); } } }; module.exports = ProviderManager; },{"./web3":8}],7:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file qt.js * @authors: * Jeffrey Wilcke * Marek Kotewicz * @date 2014 */ /** * QtProvider object prototype is implementing 'provider protocol' * Should be used inside ethereum browser. It's compatible with cpp and go clients. * It uses navigator.qt object to pass the messages to native bindings */ var QtProvider = function() { this.handlers = []; var self = this; navigator.qt.onmessage = function (message) { self.handlers.forEach(function (handler) { handler.call(self, JSON.parse(message.data)); }); }; }; /// Prototype object method /// Should be called when we want to send single api request to native bindings /// Asynchronous /// Response will be received by navigator.qt.onmessage method and passed to handlers /// @param payload is inner message object QtProvider.prototype.send = function(payload) { navigator.qt.postMessage(JSON.stringify(payload)); }; /// Prototype object property /// Should be used to set message handlers for this provider Object.defineProperty(QtProvider.prototype, "onmessage", { set: function(handler) { this.handlers.push(handler); } }); module.exports = QtProvider; },{}],8:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file web3.js * @authors: * Jeffrey Wilcke * Marek Kotewicz * Marian Oancea * Gav Wood * @date 2014 */ /// Recursively resolves all promises in given object and replaces the resolved values with promises /// @param any object/array/promise/anything else.. /// @returns (resolves) object with replaced promises with their result function flattenPromise (obj) { if (obj instanceof Promise) { return Promise.resolve(obj); } if (obj instanceof Array) { return new Promise(function (resolve) { var promises = obj.map(function (o) { return flattenPromise(o); }); return Promise.all(promises).then(function (res) { for (var i = 0; i < obj.length; i++) { obj[i] = res[i]; } resolve(obj); }); }); } if (obj instanceof Object) { return new Promise(function (resolve) { var keys = Object.keys(obj); var promises = keys.map(function (key) { return flattenPromise(obj[key]); }); return Promise.all(promises).then(function (res) { for (var i = 0; i < keys.length; i++) { obj[keys[i]] = res[i]; } resolve(obj); }); }); } return Promise.resolve(obj); } /// @returns an array of objects describing web3 api methods var web3Methods = function () { return [ { name: 'sha3', call: 'web3_sha3' } ]; }; /// @returns an array of objects describing web3.eth api methods var ethMethods = function () { var blockCall = function (args) { return typeof args[0] === "string" ? "eth_blockByHash" : "eth_blockByNumber"; }; var transactionCall = function (args) { return typeof args[0] === "string" ? 'eth_transactionByHash' : 'eth_transactionByNumber'; }; var uncleCall = function (args) { return typeof args[0] === "string" ? 'eth_uncleByHash' : 'eth_uncleByNumber'; }; var methods = [ { name: 'balanceAt', call: 'eth_balanceAt' }, { name: 'stateAt', call: 'eth_stateAt' }, { name: 'storageAt', call: 'eth_storageAt' }, { name: 'countAt', call: 'eth_countAt'}, { name: 'codeAt', call: 'eth_codeAt' }, { name: 'transact', call: 'eth_transact' }, { name: 'call', call: 'eth_call' }, { name: 'block', call: blockCall }, { name: 'transaction', call: transactionCall }, { name: 'uncle', call: uncleCall }, { name: 'compilers', call: 'eth_compilers' }, { name: 'lll', call: 'eth_lll' }, { name: 'solidity', call: 'eth_solidity' }, { name: 'serpent', call: 'eth_serpent' }, { name: 'logs', call: 'eth_logs' } ]; return methods; }; /// @returns an array of objects describing web3.eth api properties var ethProperties = function () { return [ { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' }, { name: 'listening', getter: 'eth_listening', setter: 'eth_setListening' }, { name: 'mining', getter: 'eth_mining', setter: 'eth_setMining' }, { name: 'gasPrice', getter: 'eth_gasPrice' }, { name: 'account', getter: 'eth_account' }, { name: 'accounts', getter: 'eth_accounts' }, { name: 'peerCount', getter: 'eth_peerCount' }, { name: 'defaultBlock', getter: 'eth_defaultBlock', setter: 'eth_setDefaultBlock' }, { name: 'number', getter: 'eth_number'} ]; }; /// @returns an array of objects describing web3.db api methods var dbMethods = function () { return [ { name: 'put', call: 'db_put' }, { name: 'get', call: 'db_get' }, { name: 'putString', call: 'db_putString' }, { name: 'getString', call: 'db_getString' } ]; }; /// @returns an array of objects describing web3.shh api methods var shhMethods = function () { return [ { name: 'post', call: 'shh_post' }, { name: 'newIdentity', call: 'shh_newIdentity' }, { name: 'haveIdentity', call: 'shh_haveIdentity' }, { name: 'newGroup', call: 'shh_newGroup' }, { name: 'addToGroup', call: 'shh_addToGroup' } ]; }; /// @returns an array of objects describing web3.eth.watch api methods var ethWatchMethods = function () { var newFilter = function (args) { return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter'; }; return [ { name: 'newFilter', call: newFilter }, { name: 'uninstallFilter', call: 'eth_uninstallFilter' }, { name: 'getMessages', call: 'eth_filterLogs' } ]; }; /// @returns an array of objects describing web3.shh.watch api methods var shhWatchMethods = function () { return [ { name: 'newFilter', call: 'shh_newFilter' }, { name: 'uninstallFilter', call: 'shh_uninstallFilter' }, { name: 'getMessage', call: 'shh_getMessages' } ]; }; /// creates methods in a given object based on method description on input /// setups api calls for these methods var setupMethods = function (obj, methods) { methods.forEach(function (method) { obj[method.name] = function () { return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) { var call = typeof method.call === "function" ? method.call(args) : method.call; return {call: call, args: args}; }).then(function (request) { return new Promise(function (resolve, reject) { web3.provider.send(request, function (err, result) { if (!err) { resolve(result); return; } reject(err); }); }); }).catch(function(err) { console.error(err); }); }; }); }; /// creates properties in a given object based on properties description on input /// setups api calls for these properties var setupProperties = function (obj, properties) { properties.forEach(function (property) { var proto = {}; proto.get = function () { return new Promise(function(resolve, reject) { web3.provider.send({call: property.getter}, function(err, result) { if (!err) { resolve(result); return; } reject(err); }); }); }; if (property.setter) { proto.set = function (val) { return flattenPromise([val]).then(function (args) { return new Promise(function (resolve) { web3.provider.send({call: property.setter, args: args}, function (err, result) { if (!err) { resolve(result); return; } reject(err); }); }); }).catch(function (err) { console.error(err); }); }; } Object.defineProperty(obj, property.name, proto); }); }; // TODO: import from a dependency, don't duplicate. var hexToDec = function (hex) { return parseInt(hex, 16).toString(); }; var decToHex = function (dec) { return parseInt(dec).toString(16); }; /// setups web3 object, and it's in-browser executed methods var web3 = { _callbacks: {}, _events: {}, providers: {}, toHex: function(str) { var hex = ""; for(var i = 0; i < str.length; i++) { var n = str.charCodeAt(i).toString(16); hex += n.length < 2 ? '0' + n : n; } return hex; }, /// @returns ascii string representation of hex value prefixed with 0x toAscii: function(hex) { // Find termination var str = ""; var i = 0, l = hex.length; if (hex.substring(0, 2) === '0x') i = 2; for(; i < l; i+=2) { var code = parseInt(hex.substr(i, 2), 16); if(code === 0) { break; } str += String.fromCharCode(code); } return str; }, /// @returns hex representation (prefixed by 0x) of ascii string fromAscii: function(str, pad) { pad = pad === undefined ? 0 : pad; var hex = this.toHex(str); while(hex.length < pad*2) hex += "00"; return "0x" + hex; }, /// @returns decimal representaton of hex value prefixed by 0x toDecimal: function (val) { return hexToDec(val.substring(2)); }, /// @returns hex representation (prefixed by 0x) of decimal value fromDecimal: function (val) { return "0x" + decToHex(val); }, /// used to transform value/string to eth string toEth: function(str) { var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str; var unit = 0; var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ]; while (val > 3000 && unit < units.length - 1) { val /= 1000; unit++; } var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2); var replaceFunction = function($0, $1, $2) { return $1 + ',' + $2; }; while (true) { var o = s; s = s.replace(/(\d)(\d\d\d[\.\,])/, replaceFunction); if (o === s) break; } return s + ' ' + units[unit]; }, /// eth object prototype eth: { watch: function (params) { return new web3.filter(params, ethWatch); } }, /// db object prototype db: {}, /// shh object prototype shh: { watch: function (params) { return new web3.filter(params, shhWatch); } }, /// used by filter to register callback with given id on: function(event, id, cb) { if(web3._events[event] === undefined) { web3._events[event] = {}; } web3._events[event][id] = cb; return this; }, /// used by filter to unregister callback with given id off: function(event, id) { if(web3._events[event] !== undefined) { delete web3._events[event][id]; } return this; }, /// used to trigger callback registered by filter trigger: function(event, id, data) { var callbacks = web3._events[event]; if (!callbacks || !callbacks[id]) { return; } var cb = callbacks[id]; cb(data); }, /// @returns true if provider is installed haveProvider: function() { return !!web3.provider.provider; } }; /// setups all api methods setupMethods(web3, web3Methods()); setupMethods(web3.eth, ethMethods()); setupProperties(web3.eth, ethProperties()); setupMethods(web3.db, dbMethods()); setupMethods(web3.shh, shhMethods()); var ethWatch = { changed: 'eth_changed' }; setupMethods(ethWatch, ethWatchMethods()); var shhWatch = { changed: 'shh_changed' }; setupMethods(shhWatch, shhWatchMethods()); web3.setProvider = function(provider) { provider.onmessage = messageHandler; web3.provider.set(provider); web3.provider.sendQueued(); }; /// callled when there is new incoming message function messageHandler(data) { if(data._event !== undefined) { web3.trigger(data._event, data._id, data.data); return; } if(data._id) { var cb = web3._callbacks[data._id]; if (cb) { cb.call(this, data.error, data.data); delete web3._callbacks[data._id]; } } } module.exports = web3; },{}],9:[function(require,module,exports){ /* This file is part of ethereum.js. ethereum.js 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. ethereum.js 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 ethereum.js. If not, see . */ /** @file websocket.js * @authors: * Jeffrey Wilcke * Marek Kotewicz * Marian Oancea * @date 2014 */ // TODO: is these line is supposed to be here? if ("build" !== 'build') {/* var WebSocket = require('ws'); // jshint ignore:line */} /** * WebSocketProvider object prototype is implementing 'provider protocol' * Should be used when we want to connect to ethereum backend over websockets * It's compatible with go client * The constructor allows to specify host uri */ var WebSocketProvider = function(host) { // onmessage handlers this.handlers = []; // queue will be filled with messages if send is invoked before the ws is ready this.queued = []; this.ready = false; this.ws = new WebSocket(host); var self = this; this.ws.onmessage = function(event) { for(var i = 0; i < self.handlers.length; i++) { self.handlers[i].call(self, JSON.parse(event.data), event); } }; this.ws.onopen = function() { self.ready = true; for (var i = 0; i < self.queued.length; i++) { // Resend self.send(self.queued[i]); } }; }; /// Prototype object method /// Should be called when we want to send single api request to server /// Asynchronous, it's using websockets /// Response for the call will be received by ws.onmessage /// @param payload is inner message object WebSocketProvider.prototype.send = function(payload) { if (this.ready) { var data = JSON.stringify(payload); this.ws.send(data); } else { this.queued.push(payload); } }; /// Prototype object method /// Should be called to add handlers WebSocketProvider.prototype.onMessage = function(handler) { this.handlers.push(handler); }; /// Prototype object method /// Should be called to close websockets connection WebSocketProvider.prototype.unload = function() { this.ws.close(); }; /// Prototype object property /// Should be used to set message handlers for this provider Object.defineProperty(WebSocketProvider.prototype, "onmessage", { set: function(provider) { this.onMessage(provider); } }); if (typeof(module) !== "undefined") module.exports = WebSocketProvider; },{}],"web3":[function(require,module,exports){ var web3 = require('./lib/web3'); var ProviderManager = require('./lib/providermanager'); web3.provider = new ProviderManager(); web3.filter = require('./lib/filter'); web3.providers.WebSocketProvider = require('./lib/websocket'); web3.providers.HttpRpcProvider = require('./lib/httprpc'); web3.providers.QtProvider = require('./lib/qt'); web3.providers.AutoProvider = require('./lib/autoprovider'); web3.eth.contract = require('./lib/contract'); module.exports = web3; },{"./lib/autoprovider":2,"./lib/contract":3,"./lib/filter":4,"./lib/httprpc":5,"./lib/providermanager":6,"./lib/qt":7,"./lib/web3":8,"./lib/websocket":9}]},{},["web3"]) //# sourceMappingURL=ethereum.js.map