289 lines
9.9 KiB
JavaScript
289 lines
9.9 KiB
JavaScript
'use strict';
|
|
|
|
var Provider = require('./provider.js');
|
|
|
|
var utils = (function() {
|
|
var convert = require('../utils/convert.js');
|
|
return {
|
|
defineProperty: require('../utils/properties.js').defineProperty,
|
|
|
|
hexlify: convert.hexlify,
|
|
hexStripZeros: convert.hexStripZeros,
|
|
};
|
|
})();
|
|
|
|
|
|
function getTransactionString(transaction) {
|
|
var result = [];
|
|
for (var key in transaction) {
|
|
if (transaction[key] == null) { continue; }
|
|
var value = utils.hexlify(transaction[key]);
|
|
if ({ gasLimit: true, gasPrice: true, nonce: true, value: true }[key]) {
|
|
value = utils.hexStripZeros(value);
|
|
}
|
|
result.push(key + '=' + value);
|
|
}
|
|
return result.join('&');
|
|
}
|
|
|
|
function EtherscanProvider(network, apiKey) {
|
|
Provider.call(this, network);
|
|
|
|
var baseUrl = null;
|
|
switch(this.name) {
|
|
case 'homestead':
|
|
baseUrl = 'https://api.etherscan.io';
|
|
break;
|
|
case 'ropsten':
|
|
baseUrl = 'https://api-ropsten.etherscan.io';
|
|
break;
|
|
case 'rinkeby':
|
|
baseUrl = 'https://api-rinkeby.etherscan.io';
|
|
break;
|
|
case 'kovan':
|
|
baseUrl = 'https://api-kovan.etherscan.io';
|
|
break;
|
|
default:
|
|
throw new Error('unsupported network');
|
|
}
|
|
utils.defineProperty(this, 'baseUrl', baseUrl);
|
|
|
|
utils.defineProperty(this, 'apiKey', apiKey || null);
|
|
}
|
|
Provider.inherits(EtherscanProvider);
|
|
|
|
utils.defineProperty(EtherscanProvider.prototype, '_call', function() {
|
|
});
|
|
|
|
utils.defineProperty(EtherscanProvider.prototype, '_callProxy', function() {
|
|
});
|
|
|
|
function getResult(result) {
|
|
// getLogs, getHistory have weird success responses
|
|
if (result.status == 0 && (result.message === 'No records found' || result.message === 'No transactions found')) {
|
|
return result.result;
|
|
}
|
|
|
|
if (result.status != 1 || result.message != 'OK') {
|
|
var error = new Error('invalid response');
|
|
error.result = JSON.stringify(result);
|
|
throw error;
|
|
}
|
|
|
|
return result.result;
|
|
}
|
|
|
|
function getJsonResult(result) {
|
|
if (result.jsonrpc != '2.0') {
|
|
var error = new Error('invalid response');
|
|
error.result = JSON.stringify(result);
|
|
throw error;
|
|
}
|
|
|
|
if (result.error) {
|
|
var error = new Error(result.error.message || 'unknown error');
|
|
if (result.error.code) { error.code = result.error.code; }
|
|
if (result.error.data) { error.data = result.error.data; }
|
|
throw error;
|
|
}
|
|
|
|
return result.result;
|
|
}
|
|
|
|
function checkLogTag(blockTag) {
|
|
if (blockTag === 'pending') { throw new Error('pending not supported'); }
|
|
if (blockTag === 'latest') { return blockTag; }
|
|
|
|
return parseInt(blockTag.substring(2), 16);
|
|
}
|
|
|
|
|
|
utils.defineProperty(EtherscanProvider.prototype, 'perform', function(method, params) {
|
|
if (!params) { params = {}; }
|
|
|
|
var url = this.baseUrl;
|
|
|
|
var apiKey = '';
|
|
if (this.apiKey) { apiKey += '&apikey=' + this.apiKey; }
|
|
|
|
switch (method) {
|
|
case 'getBlockNumber':
|
|
url += '/api?module=proxy&action=eth_blockNumber' + apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'getGasPrice':
|
|
url += '/api?module=proxy&action=eth_gasPrice' + apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
|
|
case 'getBalance':
|
|
// Returns base-10 result
|
|
url += '/api?module=account&action=balance&address=' + params.address;
|
|
url += '&tag=' + params.blockTag + apiKey;
|
|
return Provider.fetchJSON(url, null, getResult);
|
|
|
|
case 'getTransactionCount':
|
|
url += '/api?module=proxy&action=eth_getTransactionCount&address=' + params.address;
|
|
url += '&tag=' + params.blockTag + apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'getCode':
|
|
url += '/api?module=proxy&action=eth_getCode&address=' + params.address;
|
|
url += '&tag=' + params.blockTag + apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'getStorageAt':
|
|
url += '/api?module=proxy&action=eth_getStorageAt&address=' + params.address;
|
|
url += '&position=' + params.position;
|
|
url += '&tag=' + params.blockTag + apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'sendTransaction':
|
|
url += '/api?module=proxy&action=eth_sendRawTransaction&hex=' + params.signedTransaction;
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
|
|
case 'getBlock':
|
|
if (params.blockTag) {
|
|
url += '/api?module=proxy&action=eth_getBlockByNumber&tag=' + params.blockTag;
|
|
url += '&boolean=false';
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
}
|
|
throw new Error('getBlock by blockHash not implmeneted');
|
|
|
|
case 'getTransaction':
|
|
url += '/api?module=proxy&action=eth_getTransactionByHash&txhash=' + params.transactionHash;
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'getTransactionReceipt':
|
|
url += '/api?module=proxy&action=eth_getTransactionReceipt&txhash=' + params.transactionHash;
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
|
|
case 'call':
|
|
var transaction = getTransactionString(params.transaction);
|
|
if (transaction) { transaction = '&' + transaction; }
|
|
url += '/api?module=proxy&action=eth_call' + transaction;
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'estimateGas':
|
|
var transaction = getTransactionString(params.transaction);
|
|
if (transaction) { transaction = '&' + transaction; }
|
|
url += '/api?module=proxy&action=eth_estimateGas&' + transaction;
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getJsonResult);
|
|
|
|
case 'getLogs':
|
|
url += '/api?module=logs&action=getLogs';
|
|
try {
|
|
if (params.filter.fromBlock) {
|
|
url += '&fromBlock=' + checkLogTag(params.filter.fromBlock);
|
|
}
|
|
|
|
if (params.filter.toBlock) {
|
|
url += '&toBlock=' + checkLogTag(params.filter.toBlock);
|
|
}
|
|
|
|
if (params.filter.address) {
|
|
url += '&address=' + params.filter.address;
|
|
}
|
|
|
|
// @TODO: We can handle slightly more complicated logs using the logs API
|
|
if (params.filter.topics && params.filter.topics.length > 0) {
|
|
if (params.filter.topics.length > 1) {
|
|
throw new Error('unsupported topic format');
|
|
}
|
|
var topic0 = params.filter.topics[0];
|
|
if (typeof(topic0) !== 'string' || topic0.length !== 66) {
|
|
throw new Error('unsupported topic0 format');
|
|
}
|
|
url += '&topic0=' + topic0;
|
|
}
|
|
} catch (error) {
|
|
return Promise.reject(error);
|
|
}
|
|
|
|
|
|
url += apiKey;
|
|
|
|
var self = this;
|
|
return Provider.fetchJSON(url, null, getResult).then(function(logs) {
|
|
var txs = {};
|
|
|
|
var seq = Promise.resolve();
|
|
logs.forEach(function(log) {
|
|
seq = seq.then(function() {
|
|
if (log.blockHash != null) { return null; }
|
|
log.blockHash = txs[log.transactionHash];
|
|
if (log.blockHash == null) {
|
|
return self.getTransaction(log.transactionHash).then(function(tx) {
|
|
txs[log.transactionHash] = tx.blockHash;
|
|
log.blockHash = tx.blockHash;
|
|
return log;
|
|
});
|
|
}
|
|
return null;
|
|
});
|
|
})
|
|
|
|
return seq.then(function() {
|
|
return logs;
|
|
});
|
|
});
|
|
|
|
case 'getEtherPrice':
|
|
if (this.name !== 'homestead') { return Promise.resolve(0.0); }
|
|
url += '/api?module=stats&action=ethprice';
|
|
url += apiKey;
|
|
return Provider.fetchJSON(url, null, getResult).then(function(result) {
|
|
return parseFloat(result.ethusd);
|
|
});
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return Promise.reject(new Error('not implemented - ' + method));
|
|
});
|
|
|
|
utils.defineProperty(EtherscanProvider.prototype, 'getHistory', function(addressOrName, startBlock, endBlock) {
|
|
|
|
var url = this.baseUrl;
|
|
|
|
var apiKey = '';
|
|
if (this.apiKey) { apiKey += '&apikey=' + this.apiKey; }
|
|
|
|
if (startBlock == null) { startBlock = 0; }
|
|
if (endBlock == null) { endBlock = 99999999; }
|
|
|
|
return this.resolveName(addressOrName).then(function(address) {
|
|
url += '/api?module=account&action=txlist&address=' + address;
|
|
url += '&startblock=' + startBlock;
|
|
url += '&endblock=' + endBlock;
|
|
url += '&sort=asc';
|
|
|
|
return Provider.fetchJSON(url, null, getResult).then(function(result) {
|
|
var output = [];
|
|
result.forEach(function(tx) {
|
|
['contractAddress', 'to'].forEach(function(key) {
|
|
if (tx[key] == '') { delete tx[key]; }
|
|
});
|
|
if (tx.creates == null && tx.contractAddress != null) {
|
|
tx.creates = tx.contractAddress;
|
|
}
|
|
var item = Provider._formatters.checkTransactionResponse(tx);
|
|
if (tx.timeStamp) { item.timestamp = parseInt(tx.timeStamp); }
|
|
output.push(item);
|
|
});
|
|
return output;
|
|
});
|
|
});
|
|
});
|
|
|
|
module.exports = EtherscanProvider;;
|