536 lines
11 KiB
JavaScript
536 lines
11 KiB
JavaScript
/**
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* http.js - http server for bcoin
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* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
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* https://github.com/indutny/bcoin
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*/
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var EventEmitter = require('events').EventEmitter;
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var StringDecoder = require('string_decoder').StringDecoder;
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var url = require('url');
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var bcoin = require('../bcoin');
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var bn = require('bn.js');
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var constants = bcoin.protocol.constants;
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var network = bcoin.protocol.network;
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var utils = bcoin.utils;
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var assert = utils.assert;
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/**
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* HTTPServer
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*/
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function HTTPServer(node, options) {
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var self = this;
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if (!options)
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options = {};
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this.options = options;
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this.node = node;
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this.routes = {
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get: [],
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post: [],
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put: [],
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del: []
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};
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this.server = options.key
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? require('https').createServer(options)
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: require('http').createServer();
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this._init();
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}
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utils.inherits(HTTPServer, EventEmitter);
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HTTPServer.prototype._init = function _init() {
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var self = this;
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this._initRouter();
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this.server.on('connection', function(socket) {
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socket.on('error', function(err) {
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try {
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socket.destroy();
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} catch (e) {
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;
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}
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});
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});
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this.get('/', function(req, res, next, send) {
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send(200, {
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version: require('../../package.json').version,
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network: self.node.network.type
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});
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});
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// UTXO by address
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this.get('/utxo/address/:address', function(req, res, next, send) {
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var addresses = req.params.address.split(',');
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self.node.getCoinByAddress(addresses, function(err, coins) {
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if (err)
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return next(err);
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if (!coins.length)
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return send(404);
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send(200, coins.map(function(coin) { return coin.toJSON(); }));
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});
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});
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// UTXO by id
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this.get('/utxo/:hash/:index', function(req, res, next, send) {
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req.params.hash = utils.revHex(req.params.hash);
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self.node.getCoin(req.params.hash, +req.params.index, function(err, coin) {
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if (err)
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return next(err);
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if (!coin)
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return send(404);
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send(200, coin.toJSON());
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});
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});
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// Bulk read UTXOs
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this.post('/utxo/address', function(req, res, next, send) {
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self.node.getCoinByAddress(req.body.addresses, function(err, coins) {
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if (err)
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return next(err);
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if (!coins.length)
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return send(404);
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send(200, coins.map(function(coin) { return coin.toJSON(); }));
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});
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});
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// TX by hash
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this.get('/tx/:hash', function(req, res, next, send) {
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req.params.hash = utils.revHex(req.params.hash);
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self.node.getTX(req.params.hash, function(err, tx) {
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if (err)
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return next(err);
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if (!tx)
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return send(404);
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send(200, tx.toJSON());
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});
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});
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// TX by address
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this.get('/tx/address/:address', function(req, res, next, send) {
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var addresses = req.params.address.split(',');
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self.node.getTXByAddress(addresses, function(err, txs) {
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if (err)
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return next(err);
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if (!txs.length)
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return send(404);
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send(200, txs.map(function(tx) { return tx.toJSON(); }));
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});
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});
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// Bulk read TXs
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this.post('/tx/address', function(req, res, next, send) {
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self.node.getTXByAddress(req.params.addresses, function(err, txs) {
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if (err)
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return next(err);
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if (!txs.length)
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return send(404);
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send(200, txs.map(function(tx) { return tx.toJSON(); }));
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});
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});
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// Block by hash/height
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this.get('/block/:hash', function(req, res, next, send) {
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var hash = req.params.hash;
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if (utils.isInt(hash))
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hash = +hash;
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else
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hash = utils.revHex(hash);
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self.node.getBlock(hash, function(err, block) {
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if (err)
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return next(err);
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if (!block)
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return send(404);
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send(200, block.toJSON());
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});
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});
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// Get wallet
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this.get('/wallet/:id', function(req, res, next, send) {
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self.node.walletdb.getJSON(req.params.id, function(err, json) {
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if (err)
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return next(err);
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if (!json)
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return send(404);
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send(200, json);
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});
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});
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// Create/get wallet
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this.post('/wallet/:id', function(req, res, next, send) {
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req.body.id = req.params.id;
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self.node.walletdb.createJSON(req.body.id, req.body, function(err, json) {
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if (err)
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return next(err);
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if (!json)
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return send(404);
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send(200, json);
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});
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});
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// Update wallet / sync address depth
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this.put('/wallet/:id', function(req, res, next, send) {
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req.body.id = req.params.id;
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self.node.walletdb.saveJSON(req.body.id, req.body, function(err, json) {
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if (err)
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return next(err);
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if (!json)
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return send(404);
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send(200, json);
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});
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});
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// Wallet UTXOs
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this.get('/wallet/:id/utxo', function(req, res, next, send) {
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self.node.walletdb.getJSON(req.params.id, function(err, json) {
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if (err)
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return next(err);
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if (!json)
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return send(404);
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self.node.getCoinByAddress(Object.keys(json.addressMap), function(err, coins) {
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if (err)
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return next(err);
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if (!coins.length)
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return send(404);
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send(200, coins.map(function(coin) { return coin.toJSON(); }));
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});
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});
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});
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// Wallet TXs
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this.get('/wallet/:id/tx', function(req, res, next, send) {
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self.node.walletdb.getJSON(req.params.id, function(err, json) {
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if (err)
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return next(err);
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if (!json)
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return send(404);
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self.node.getTXByAddress(Object.keys(json.addressMap), function(err, txs) {
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if (err)
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return next(err);
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if (!txs.length)
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return send(404);
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send(200, coins.map(function(tx) { return tx.toJSON(); }));
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});
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});
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});
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};
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HTTPServer.prototype.listen = function listen(port, host, callback) {
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var self = this;
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this.server.listen(port, host, function(err) {
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var address;
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if (err)
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throw err;
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address = self.server.address();
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utils.debug('Listening - host=%s port=%d',
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address.address, address.port);
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if (callback)
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callback();
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});
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};
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HTTPServer.prototype._initRouter = function _initRouter() {
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var self = this;
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this.server.on('request', function(req, res) {
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function _send(code, msg) {
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send(res, code, msg);
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}
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function done(err) {
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if (err) {
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send(res, 400, { error: err.stack + '' });
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try {
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req.destroy();
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req.socket.destroy();
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} catch (e) {
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;
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}
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}
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}
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try {
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parsePath(req);
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} catch (e) {
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done(e);
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}
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utils.debug('Request from %s path=%s',
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req.socket.remoteAddress, req.pathname);
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parseBody(req, function(err) {
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var method, routes, i;
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if (err)
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return done(err);
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method = (req.method || 'GET').toLowerCase();
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routes = self.routes[method];
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i = 0;
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if (!routes)
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return done(new Error('No routes found.'));
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(function next(err) {
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var route, path, callback, compiled, matched;
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if (err)
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return done(err);
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if (i === routes.length)
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return done(new Error('Route not found.'));
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route = routes[i++];
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path = route.path;
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callback = route.callback;
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if (!route.regex) {
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compiled = compilePath(path);
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route.regex = compiled.regex;
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route.map = compiled.map;
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}
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matched = route.regex.exec(req.pathname);
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if (!matched)
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return next();
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req.params = {};
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matched.slice(1).forEach(function(item, i) {
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if (route.map[i])
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req.params[route.map[i]] = item;
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req.params[i] = item;
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});
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// Avoid stack overflows
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utils.nextTick(function() {
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try {
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callback(req, res, next, _send);
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} catch (e) {
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done(e);
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}
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});
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})();
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});
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});
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};
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HTTPServer.prototype.get = function get(path, callback) {
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this.routes.get.push({ path: path, callback: callback });
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};
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HTTPServer.prototype.post = function post(path, callback) {
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this.routes.post.push({ path: path, callback: callback });
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};
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HTTPServer.prototype.put = function put(path, callback) {
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this.routes.put.push({ path: path, callback: callback });
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};
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HTTPServer.prototype.del = function del(path, callback) {
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this.routes.del.push({ path: path, callback: callback });
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};
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/**
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* Helpers
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*/
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function send(res, code, msg) {
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if (!msg)
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msg = { error: 'No message.' };
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try {
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res.statusCode = code;
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msg = JSON.stringify(msg, null, 2) + '\n';
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res.setHeader('Content-Type', 'application/json; charset=utf-8');
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res.setHeader('Content-Length', Buffer.byteLength(msg) + '');
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res.write(msg);
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res.end();
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} catch (e) {
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utils.debug('Write failed: %s', e.message);
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}
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}
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function compilePath(path) {
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var map = [];
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if (path instanceof RegExp)
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return { regex: path, map: map };
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var regex = path
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.replace(/([^\/]+)\?/g, '(?:$1)?')
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.replace(/\.(?!\+)/g, '\\.')
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.replace(/\*/g, '.*?')
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.replace(/%/g, '\\')
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.replace(/:(\w+)/g, function(__, name) {
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map.push(name);
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return '([^/]+)';
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}
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);
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regex = new RegExp('^' + regex + '$');
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return {
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map: map,
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regex: regex
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};
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}
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function parseBody(req, callback) {
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var decode = new StringDecoder('utf8');
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var total = 0;
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var body = '';
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req.body = {};
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if (req.method === 'GET')
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return callback();
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req.on('data', function(data) {
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total += data.length;
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if (total > 20 * 1024 * 1024)
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return callback(new Error('Overflow.'));
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body += decode.write(data);
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});
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req.on('error', function(err) {
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try {
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req.destroy();
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req.socket.destroy();
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} catch (e) {
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;
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}
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callback(err);
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});
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req.on('end', function() {
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try {
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if (body)
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req.body = JSON.parse(body);
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} catch (e) {
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return callback(e);
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}
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callback();
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});
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}
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function parsePairs(str, del, eq) {
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var out, s, i, parts;
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if (!str)
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return {};
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if (!del)
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del = '&';
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if (!eq)
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eq = '=';
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out = {};
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s = str.split(del);
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for (i = 0; i < s.length; i++) {
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parts = s[i].split(eq);
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if (parts[0]) {
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parts[0] = unescape(parts[0]);
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parts[1] = parts[1] ? unescape(parts[1]) : '';
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out[parts[0]] = parts[1];
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}
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}
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return out;
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}
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function parsePath(req) {
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var uri = url.parse(req.url);
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var pathname = uri.pathname || '/';
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if (pathname[pathname.length - 1] === '/')
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pathname = pathname.slice(0, -1);
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pathname = unescape(pathname);
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req.path = pathname;
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if (req.path[0] === '/')
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req.path = req.path.substring(1);
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req.path = req.path.split('/');
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if (!req.path[0])
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req.path = [];
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req.pathname = pathname || '/';
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if (req.url.indexOf('//') !== -1) {
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req.url = req.url.replace(/^([^:\/]+)?\/\/[^\/]+/, '');
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if (!req.url)
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req.url = '/';
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}
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if (!req.query) {
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req.query = uri.query
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? parsePairs(uri.query, '&')
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: {};
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}
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}
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function escape(str) {
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return encodeURIComponent(str).replace(/%20/g, '+');
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}
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function unescape(str) {
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try {
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str = decodeURIComponent(str).replace(/\+/g, ' ');
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} finally {
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return str.replace(/\0/g, '');
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}
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}
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/**
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* Expose
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*/
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module.exports = HTTPServer;
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