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index.js
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/** mayktso
*
* https://github.com/csarven/mayktso
*
* Copyright 2016 Sarven Capadisli <[email protected]> http://csarven.ca/#i
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
var LdpStore = require('rdf-store-ldp/lite')
var SimpleRDF = require('simplerdf')
var JsonLdParser = require('rdf-parser-jsonld')
var N3Parser = require('rdf-parser-n3')
var RdfaParser = require('rdf-parser-rdfa')
var RdfXmlParser = require('rdf-parser-rdfxml')
var SimpleRDFParse = require('simplerdf-parse')
var request = require('request')
var formats = {parsers: {}}
formats.parsers['application/ld+json'] = JsonLdParser
formats.parsers['text/turtle'] = N3Parser
formats.parsers['text/n3'] = N3Parser
formats.parsers['application/n-triples'] = N3Parser
formats.parsers['application/xhtml+xml'] = RdfaParser
formats.parsers['text/html'] = RdfaParser
formats.parsers['application/rdf+xml'] = RdfXmlParser
var parser = SimpleRDFParse(formats.parsers)
SimpleRDF.parse = parser.parse.bind(parser)
var storeFormats = {parsers:{}}
storeFormats.parsers['application/ld+json'] = JsonLdParser
storeFormats.parsers['text/turtle'] = N3Parser
storeFormats.parsers['text/n3'] = N3Parser
storeFormats.parsers['application/n-triples'] = N3Parser
storeFormats.parsers['application/xhtml+xml'] = RdfaParser
storeFormats.parsers['text/html'] = RdfaParser
// storeFormats.parsers['application/rdf+xml'] = RdfXmlParser
RDFstore = new LdpStore(storeFormats)
var fs = require('fs');
var minimist = require('minimist');
// var path = require('path');
// var extname = path.extname;
var etag = require('etag');
var uuid = require('node-uuid');
var express = require('express');
var https = require('https');
var http = require('http');
var XMLHttpRequest = require('xhr2');
//var accepts = require('accepts');
var contentType = require('content-type');
var bodyParser = require('body-parser');
var mime = require('mime');
var EventEmitter = require('events');
var acceptRDFTypes = ['application/ld+json', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"', 'text/turtle', 'application/xhtml+xml', 'text/html'];
var acceptRDFaTypes = ['application/xhtml+xml', 'text/html'];
var acceptNonRDFTypes = ['text/css', 'application/javascript', 'image/svg+xml'];
var acceptNonRDFBinaryTypes = ['image/png', 'image/jpeg', 'image/gif'];
var acceptProfiles = ['https://www.w3.org/ns/activitystreams'];
var mayktsoURI = 'https://github.com/csarven/mayktso';
var vocab = {
"rdftype": { "@id": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "@type": "@id", "@array": true },
"ldpcontains": { "@id": "http://www.w3.org/ns/ldp#contains", "@type": "@id", "@array": true },
"ldpinbox": { "@id": "http://www.w3.org/ns/ldp#inbox", "@type": "@id", "@array": true },
"ldpresource": { "@id": "http://www.w3.org/ns/ldp#Resource", "@type": "@id", "@array": true },
"ldpcontainer": { "@id": "http://www.w3.org/ns/ldp#Container", "@type": "@id", "@array": true },
"ldpbasiccontainer": { "@id": "http://www.w3.org/ns/ldp#BasicContainer", "@type": "@id", "@array": true },
"ldpconstrainedBy": { "@id": "http://www.w3.org/ns/ldp#constrainedBy", "@type": "@id", "@array": true },
"rdfsseeAlso": { "@id": "http://www.w3.org/2000/01/rdf-schema#seeAlso", "@type": "@id", "@array": true },
"foafprimaryTopic": { "@id": "http://xmlns.com/foaf/0.1/primaryTopic", "@type": "@id" },
"owlsameAs": { "@id": "http://www.w3.org/2002/07/owl#sameAs", "@type": "@id", "@array": true },
"asannounce": { "@id": "https://www.w3.org/ns/activitystreams#Announce", "@type": "@id", "@array": true },
"assubject": { "@id": "https://www.w3.org/ns/activitystreams#subject", "@type": "@id", "@array": true },
"asobject": { "@id": "https://www.w3.org/ns/activitystreams#object", "@type": "@id", "@array": true },
"astarget": { "@id": "https://www.w3.org/ns/activitystreams#target", "@type": "@id", "@array": true },
"asrelationship": { "@id": "https://www.w3.org/ns/activitystreams#relationship", "@type": "@id", "@array": true },
"ascontext": { "@id": "https://www.w3.org/ns/activitystreams#context", "@type": "@id", "@array": true },
"asinReplyTo": { "@id": "https://www.w3.org/ns/activitystreams#inReplyTo", "@type": "@id", "@array": true },
"asactor": { "@id": "https://www.w3.org/ns/activitystreams#actor", "@type": "@id" },
"asupdated": "https://www.w3.org/ns/activitystreams#updated",
"aspublished": "https://www.w3.org/ns/activitystreams#published",
"ascontent": "https://www.w3.org/ns/activitystreams#content",
"asname": "https://www.w3.org/ns/activitystreams#name",
"asimage": { "@id": "https://www.w3.org/ns/activitystreams#image", "@type": "@id" },
"schemalicense": { "@id": "http://schema.org/license", "@type": "@id" }
};
var prefixes = {
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"rdfs": "http://www.w3.org/2000/01/rdf-schema#",
"owl": "http://www.w3.org/2002/07/owl#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
"dcterms": "http://purl.org/dc/terms/",
"dctypes": "http://purl.org/dc/dcmitype/",
"foaf": "http://xmlns.com/foaf/0.1/",
"v": "http://www.w3.org/2006/vcard/ns#",
"pimspace": "http://www.w3.org/ns/pim/space#",
"cc": "https://creativecommons.org/ns#",
"skos": "http://www.w3.org/2004/02/skos/core#",
"prov": "http://www.w3.org/ns/prov#",
"qb": "http://purl.org/linked-data/cube#",
"schema": "http://schema.org/",
"void": "http://rdfs.org/ns/void#",
"rsa": "http://www.w3.org/ns/auth/rsa#",
"cert": "http://www.w3.org/ns/auth/cert#",
"cal": "http://www.w3.org/2002/12/cal/ical#",
"wgs": "http://www.w3.org/2003/01/geo/wgs84_pos#",
"org": "http://www.w3.org/ns/org#",
"biblio": "http://purl.org/net/biblio#",
"bibo": "http://purl.org/ontology/bibo/",
"book": "http://purl.org/NET/book/vocab#",
"ov": "http://open.vocab.org/terms/",
"sioc": "http://rdfs.org/sioc/ns#",
"doap": "http://usefulinc.com/ns/doap#",
"dbr": "http://dbpedia.org/resource/",
"dbp": "http://dbpedia.org/property/",
"sio": "http://semanticscience.org/resource/",
"opmw": "http://www.opmw.org/ontology/",
"deo": "http://purl.org/spar/deo/",
"doco": "http://purl.org/spar/doco/",
"cito": "http://purl.org/spar/cito/",
"fabio": "http://purl.org/spar/fabio/",
"oa": "http://www.w3.org/ns/oa#",
"as": "https://www.w3.org/ns/activitystreams#",
"ldp": "http://www.w3.org/ns/ldp#",
"solid": "http://www.w3.org/ns/solid/terms#",
"earl": "http://www.w3.org/ns/earl#",
"ldn": "https://www.w3.org/TR/ldn/#"
}
var prefixesRDFa = Object.keys(prefixes).map(function(i){ return i + ': ' + prefixes[i]; }).join(' ');
var argv;
var app = express();
const eventEmitter = new EventEmitter();
// app.use(compress());
if(!module.parent) {
init();
}
function getConfigFile(configFile){
var config = {};
//TODO: Build/merge config in steps 1) input 2) cwd 3) local to mayktso 4) defaults in config()
if(configFile && config.length > 0){
config = require(configFile);
console.log('Applied: ' + configFile);
}
else {
var processConfigFile = process.cwd() + '/config.json';
if(fs.existsSync(processConfigFile)){
config = require(processConfigFile);
console.log('Applied: ' + processConfigFile);
}
else {
var localConfigFile = __dirname + '/config.json';
if(fs.existsSync(localConfigFile)){
config = require(__dirname + '/config.json');
console.log('Applied: ' + localConfigFile);
}
}
}
// console.log(config);
return config;
}
function config(configFile){
var config = getConfigFile(configFile);
console.log('Applying defaults:');
config['hostname'] = 'localhost';
config['port'] = config.port || 3000;
config['scheme'] = (config.sslKey && config.sslCert) ? 'https' : 'http';
config['authority'] = config.scheme + '://' + config.hostname + ':' + config.port;
config['rootPath'] = config.rootPath || ((process.cwd() != __dirname) ? process.cwd() : '.');
config['basePath'] = config.basePath || '';
config['inboxPath'] = config.inboxPath || 'inbox/';
config['queuePath'] = config.queuePath || 'queue/';
config['annotationPath'] = config.annotationPath || 'annotation/';
config['reportsPath'] = config.reportsPath || 'reports/';
config['maxPayloadSize'] = config.maxPayloadSize || 100000;
config['maxResourceCount'] = config.maxResourceCount || 100;
config['maxMemberCount'] = config.maxMemberCount || 10;
config['proxyPath'] = config.proxyPath || '/proxy';
config['owners'] = config.owners || '';
var createDirectories = [config['inboxPath'], config['queuePath'], config['annotationPath'], config['reportsPath']];
createDirectories.forEach(function(path){ if(!fs.existsSync(path)){ fs.mkdirSync(path); } });
//console.log(config);
return config;
}
function createServer(config){
if (config.sslKey && config.sslCert) {
var options = {
key: fs.readFileSync(config.sslKey),
cert: fs.readFileSync(config.sslCert),
requestCert: false
};
https.createServer(options, app).listen(config.port);
}
else {
http.createServer(app).listen(config.port);
}
}
function init(options){
argv = minimist(process.argv.slice(2));
if (process.argv.length > 2) {
processArgs(argv);
}
else {
config = (options && options.config) ? options.config : config();
console.log(config);
createServer(config);
app.use(function(req, res, next) {
res.header('X-Powered-By', mayktsoURI);
res.header("Access-Control-Allow-Methods", "GET, HEAD, OPTIONS, POST, PUT, OPTIONS");
var origin = req.header('Origin');
if(origin) {
var o = origin.trim().toLowerCase();
if(o != 'null' && o != 'undefined' && (o.startsWith('http:') || o.startsWith('https:'))) {
res.header("Access-Control-Allow-Origin", req.header('Origin'));
res.header("Access-Control-Allow-Credentials", "true");
}
}
else {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Credentials", "true");
}
res.header("Access-Control-Allow-Headers", "Accept, Cache-Control, Content-Length, Content-Type, If-None-Match, Link, Location, Origin, Pragma, Slug, X-Requested-With");
res.header("Access-Control-Expose-Headers", "Accept-Post, Access-Control-Allow-Headers, Access-Control-Allow-Methods, Access-Control-Allow-Origin, Allow, Content-Length, Content-Type, ETag, Last-Modified, Link, Location, Updates-Via, Vary");
res.set('Vary', 'Origin, Accept-Encoding');
return next();
});
var rawBodySaver = function (req, res, buf, encoding) {
if (buf && buf.length) {
try {
var mediaType = contentType.parse(req.headers['content-type']).type;
if(mediaType && acceptNonRDFBinaryTypes.indexOf(mediaType) > -1) {
req.rawBody = buf;
}
else {
req.rawBody = buf.toString(encoding || 'utf8');
}
}
catch(e) {
req.rawBody = buf.toString(encoding || 'utf8');
}
}
};
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.raw({ verify: rawBodySaver, type: '*/*', limit: config.maxPayloadSize }));
app.use(function(req, res, next) {
req.getRootUrl = function() {
return req.protocol + "://" + req.header('host') + config.basePath;
}
return next();
});
app.use(function(req, res, next) {
req.getUrl = function() {
return req.getRootUrl() + req.originalUrl;
}
return next();
});
app.enable('trust proxy');
app.use(function(req, res, next){
require('console-stamp')(console, {
pattern: "yyyy-mm-dd HH:MM:ss.l",
metadata: function () {
return (req.method + ' ' + req.getUrl() + ' ' + req.ips + '');
},
colors: {
stamp: "yellow",
label: "white",
metadata: "green"
}
});
return next();
});
app.use(function(req, res, next) {
// module.exports.accept = accept = accepts(req);
req.requestedType = req.accepts(acceptRDFTypes);
// console.log(req.requestedType);
req.requestedType = (req.requestedType) ? req.requestedType.split(';')[0].trim() : req.requestedType;
// console.log(req.requestedType);
var qPosition = req.originalUrl.indexOf('?');
req.requestedPath = (qPosition > -1) ? config.rootPath + req.originalUrl.substr(0, qPosition) : config.rootPath + req.originalUrl;
if(config.owners.length > 0) {
var lHfV = [];
config.owners.forEach(function(i){
lHfV.push('<' + i + '>; rel="http://www.w3.org/ns/solid/terms#owner"');
});
req.linkHeaderFieldValueOwners = lHfV.join(', ');
}
// console.log(req);
// console.log(res);
// console.log('-----------------');
console.log(JSON.stringify(req.headers));
// console.log('req.protocol: ' + req.protocol);
// console.log('accept.types(): ' + accept.types());
// console.log(req.body);
// console.log(req.rawBody);
// console.log('req.baseUrl: ' + req.baseUrl);
// console.log('req.originalUrl: ' + req.originalUrl);
// console.log('req.url: ' + req.url);
// console.log('req.getUrl: ' + req.getUrl());
// console.log('requestedPath: ' + req.requestedPath);
// console.log('linkHeaderFieldValueOwners: ' + req.linkHeaderFieldValueOwners)
return next();
});
if(config.proxyPath.length > 0) {
app.use(config.proxyPath, function(req, res, next){
switch(req.method){
case 'GET': case 'HEAD': case 'OPTIONS':
break;
default:
res.status(405);
res.set('Allow', 'GET, HEAD, OPTIONS');
res.end();
return;
break;
}
if(req.query && 'uri' in req.query && req.query.uri.length > 0 && req.query.uri.indexOf(config.hostname) == -1 && req.query.uri.indexOf('127.0.0.1') == -1 && req.query.uri.indexOf('127.0.1.1') == -1 && !req.query.uri.startsWith('localhost') && !req.query.uri.startsWith('192.168.') && !req.query.uri.startsWith('176.16.') && !req.query.uri.startsWith('10.')){
var rO = {
'method': req.method,
'uri': req.query.uri,
headers: {'Accept': req.headers['accept']}
};
request(rO).pipe(res);
}
else {
res.status(400);
res.set('Allow', 'GET, HEAD, OPTIONS');
res.end();
return;
}
});
}
var oR = (options && options.omitRoutes) ? '|' + options.omitRoutes.join('|') : '';
var handleRoutes = new RegExp('^(?!/index.html' + oR + ').*$');
app.route(/^\/(index.html)?$/).all(getTarget);
app.route(handleRoutes).all(function(req, res, next){
handleResource(req, res, next, { jsonld: { profile: 'http://www.w3.org/ns/json-ld#expanded' }});
});
console.log('process.cwd(): ' + process.cwd());
console.log('rootPath: ' + config.rootPath);
console.log('curl -i ' + config.authority);
console.log('');
}
return eventEmitter;
}
function processArgs(argv){
console.log(argv);
if('help' in argv) {
help();
}
else if('discoverInbox' in argv){
discoverInbox(argv['discoverInbox']);
}
else if ('getNotifications' in argv){
getNotificationsArgv(argv['getNotifications']);
}
else if ('get' in argv){
getResourceArgv(argv['get']);
}
else if ('post' in argv){
postResourceArgv(argv['post']);
}
else if ('put' in argv){
putResourceArgv(argv['put']);
}
else if ('head' in argv){
headResourceArgv(argv['head']);
}
else if ('options' in argv){
optionsResourceArgv(argv['options']);
}
else {
help();
}
}
function help() {
console.log('mayktso: ' + mayktsoURI);
console.log(' * Running without parameter/option starts server, otherwise:');
console.log(' * Usage: node index.js [parameter] [options]');
console.log(' [parameter]');
console.log(' --help');
console.log(" --discoverInbox <URI> Discover a target's Inbox");
console.log(" --getNotifications <URI> Get the notifications contained in an Inbox");
console.log(" --head <URI> Headers of a URI");
console.log(' --options <URI> Check the options of a URI');
console.log(' --get <URI> [options] Dereference a resource to RDF');
console.log(' --post <URI> [options] Send notification to Inbox');
console.log(' --put <URI> [options] Store data under a URI');
console.log(' [options]');
console.log(' --accept (m, default: application/ld+json)');
console.log(' --contentType (m, default: application/ld+json)');
console.log(' --slug string');
console.log(' -d, --data <data>');
console.log(' -o, --outputType (m, default: application/ld+json)');
console.log(' m: mimetype or format; jsonld, rdfa, n3, turtle, ntriples');
}
function discoverInbox(url){
url = url || argv['discoverInbox'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
return getEndpoint(vocab['ldpinbox']['@id'], url).then(
function(i){
if(argv['discoverInbox']) {
console.log('Found:');
console.dir(i);
}
return i;
},
function(reason){
if(argv['discoverInbox']){
console.log('Not Found:');
console.dir(reason);
}
return reason;
}
);
}
function getNotificationsArgv(url){
url = url || argv['getNotifications'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var headers = {};
headers['Accept'] = ('accept' in argv) ? (formatToMimeType(argv['accept'])) : 'application/ld+json';
return getResourceHandler(url, headers).then(
function(data){
var options = {
'contentType': headers['Accept'],
'subjectURI': url
}
return getInboxNotifications(data, options).then(
function(notifications){
var contains = [];
for (var i = 0; i < notifications.length; i++) {
contains.push({
"@id": notifications[i]
});
}
var data = {
"@id": url,
"@type": [ 'http://www.w3.org/ns/ldp#Resource', 'http://www.w3.org/ns/ldp#RDFSource', 'http://www.w3.org/ns/ldp#Container', 'http://www.w3.org/ns/ldp#BasicContainer' ]
};
if (contains.length > 0) {
data['http://www.w3.org/ns/ldp#contains'] = contains;
}
if(argv['getNotifications']){
var c = JSON.stringify(data) + "\n";
console.log(c);
}
return data;
},
function(reason){
if(argv['getNotifications']){
console.log('Error:');
console.log(reason);
}
return reason;
}
);
},
function(reason){
console.log('Error:');
console.log(reason);
return reason;
}
);
}
function getResourceArgv(url){
url = url || argv['get'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var headers = {};
headers['Accept'] = ('accept' in argv) ? (formatToMimeType(argv['accept'])) : 'application/ld+json';
getResourceHandler(url, headers).then(
function(i){
console.log(i);
},
function(reason){
console.log('Error:');
console.log(reason);
}
);
}
function getResourceHandler(url, headers){
var pIRI = getProxyableIRI(url);
headers = headers || {};
return getResource(pIRI, headers).then(
function(response){
console.log(response.xhr.getAllResponseHeaders());
console.log('');
var data = response.xhr.responseText;
var toContentType;
if ('outputType' in argv && argv['outputType'] !== '' && acceptRDFTypes.indexOf(argv['outputType']) > -1){
toContentType = argv['outputType'];
}
else if('o' in argv && argv['o'] !== ''){
toContentType = formatToMimeType(argv['o'].toLowerCase());
}
else {
toContentType = headers['Accept'];
}
if(acceptRDFaTypes.indexOf(toContentType) > -1) {
toContentType = 'application/ld+json';
}
var options = { 'subjectURI': url };
if(headers['Accept'] != toContentType) {
return serializeData(data, headers['Accept'], toContentType, options);
}
else {
return data;
}
},
function(reason){
return reason;
}
);
}
function headResourceArgv(url){
url = url || argv['head'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var headers = {};
headers['Accept'] = ('accept' in argv) ? (formatToMimeType(argv['accept'])) : 'application/ld+json';
headResourceHandler(url, headers).then(
function(i){
console.log(i);
},
function(){
console.log('Error:');
console.log(reason);
}
);
}
function headResourceHandler(url, headers){
var pIRI = getProxyableIRI(url);
headers = headers || {};
return getResourceHead(pIRI, headers).then(
function(response){
console.log(response.xhr.getAllResponseHeaders());
var data = '';
if(response.xhr.responseText.length > 0) {
data = "\n" + response.xhr.responseText;
}
return data;
},
function(reason){
return reason;
}
);
}
function optionsResourceArgv(url){
url = url || argv['head'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var headers = {};
headers['Accept'] = ('accept' in argv) ? (formatToMimeType(argv['accept'])) : 'application/ld+json';
if('acceptPost' in argv) {
headers['Accept-Post'] = argv['acceptPost'];
}
optionsResourceHandler(url, headers).then(
function(i){
console.log(i);
return i;
},
function(){
console.log('Error:');
console.log(reason);
}
);
}
function optionsResourceHandler(url, headers){
var pIRI = getProxyableIRI(url);
headers = headers || {};
return getResourceOptions(pIRI, headers).then(
function(response){
console.log(response.xhr.getAllResponseHeaders());
var data = '';
if(response.xhr.responseText.length > 0) {
data = "\n" + response.xhr.responseText;
}
return data;
},
function(reason){
return reason;
}
);
}
function postResourceArgv(url){
url = url || argv['post'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var pIRI = getProxyableIRI(url);
var headers = {};
headers['Slug'] = ('slug' in argv) ? argv['slug'] : '';
headers['Content-Type'] = ('contentType' in argv) ? formatToMimeType(argv['contentType']) : 'application/ld+json';
var data;
if ('data' in argv && argv['data'] !== ''){
data = argv['data'];
}
else if('d' in argv && argv['d'] !== ''){
data = argv['d'];
}
if(data){
postResource(pIRI, headers['Slug'], data, headers['Content-Type']).then(
function(response){
// console.log(response.xhr);
console.log('HTTP/1.1 ' + response.xhr.status + ' ' + response.xhr.statusText);
console.log(response.xhr.getAllResponseHeaders());
console.log('');
if(response.xhr.responseText.length > 0){
console.log(response.xhr.responseText);
}
},
function(reason){
console.log('Not Found:');
console.dir(reason);
}
);
}
else {
console.log('Missing payload. Include -d or --data.');
}
}
function putResourceArgv(url){
url = url || argv['put'];
if (url.slice(0,4) != 'http') {
process.exit(1);
}
var pIRI = getProxyableIRI(url);
var headers = {};
headers['Content-Type'] = ('contentType' in argv) ? formatToMimeType(argv['contentType']) : 'application/ld+json';
var data;
if ('data' in argv && argv['data'] !== ''){
data = argv['data'];
}
else if('d' in argv && argv['d'] !== ''){
data = argv['d'];
}
if(data){
putResource(pIRI, data, headers['Content-Type']).then(
function(response){
// console.log(response.xhr);
console.log('HTTP/1.1 ' + response.xhr.status + ' ' + response.xhr.statusText);
console.log(response.xhr.getAllResponseHeaders());
console.log('');
if(response.xhr.responseText.lenth > 0){
console.log(response.xhr.responseText);
}
},
function(reason){
console.log('Not Found:');
console.dir(reason);
}
);
}
else {
console.log('Missing payload. Include -d or --data.');
}
}
function getTarget(req, res, next){
switch(req.method){
case 'GET': case 'HEAD': case 'OPTIONS':
break;
default:
res.status(405);
res.set('Allow', 'GET, HEAD, OPTIONS');
res.end();
return;
break;
}
if(!req.requestedType && !req.accepts(['text/html'])) {
resStatus(res, 406);
return;
}
fs.stat(req.requestedPath, function(error, stats) {
if (error) {
res.status(404);
return;
}
fs.readFile(config.rootPath + '/index.html', 'utf8', function(error, data){
if (error) { console.log(error); }
if (req.headers['if-none-match'] && (req.headers['if-none-match'] == etag(data))) {
res.status(304);
res.end();
return;
}
var fromContentType = 'text/html';
var toContentType = req.requestedType;
var baseURL = getBaseURL(req.getUrl());
var base = baseURL.endsWith('/') ? baseURL : baseURL + '/';
var basePath = config.basePath.endsWith('/') ? config.basePath : '';
var inboxURL = base + basePath + config.inboxPath;
var sendHeaders = function(outputData, contentType) {
res.set('Link', '<' + inboxURL + '>; rel="http://www.w3.org/ns/ldp#inbox", <http://www.w3.org/ns/ldp#Resource>; rel="type", <http://www.w3.org/ns/ldp#RDFSource>; rel="type"');
responseStorageOwners(req, res);
res.set('Content-Type', contentType +';charset=utf-8');
res.set('Content-Length', Buffer.byteLength(outputData, 'utf-8'));
res.set('ETag', etag(outputData));
res.set('Last-Modified', stats.mtime);
res.set('Allow', 'GET, HEAD, OPTIONS');
}
if(req.accepts(['text/html'])){
sendHeaders(data, 'text/html');
res.status(200);
res.send(data);
res.end();
}
else {
var options = { 'subjectURI': base };
serializeData(data, fromContentType, toContentType, options).then(
function(transformedData){
switch(toContentType) {
case 'application/ld+json':
var x = JSON.parse(transformedData);
x[0]["@context"] = ["http://www.w3.org/ns/ldp"];
transformedData = JSON.stringify(x);
break;
default:
break;
}
var outputData = (fromContentType != toContentType) ? transformedData : data;
sendHeaders(outputData, req.requestedType);
switch(req.method) {
case 'GET': default:
res.status(200);
res.send(outputData);
break;
case 'HEAD':
res.status(200);
res.send();
break;
case 'OPTIONS':
res.status(204);
break;
}
res.end();
},
function(reason){
res.status(500);
res.end();
return;
}
);
}
});
});
}
function applyParserFixes(data, fromContentType, toContentType) {
switch(toContentType) {
case 'text/turtle':
//XXX: Workaround for rdf-parser-rdfa bug that gives '@langauge' instead of @type when encountering datatype in HTML+RDFa . TODO: Link to bug here
data = data.replace(/Z"@en;/, 'Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>;');
data = data.replace(/start> "(\d+)"@en;/, 'start> "$1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger>;');
data = data.replace(/end> "(\d+)"@en;/, 'end> "$1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger>;');
data = data.replace(/\%2523/, '%23');
//XXX: Seems to get added when https://schema.org/docs/jsonldcontext.jsonld is used. After using 'http' -> 'https' (for fetching purpose) but then the serializer adds `@prefix 0: <https://schema.org/>` which seems invalid.
data = data.replace(/^@prefix 0: .*$/gm, '');
break;
case 'application/ld+json':
var x = JSON.parse(data);
//XXX: Workaround for rdf-parser-rdfa bug that gives '@language' instead of @type when encountering datatype in HTML+RDFa . See also https://github.com/rdf-ext/rdf-parser-rdfa/issues/5
var properties = ['https://www.w3.org/ns/activitystreams#published', 'https://www.w3.org/ns/activitystreams#updated', 'http://schema.org/dateCreated', 'http://schema.org/datePublished', 'http://schema.org/dateModified', 'http://www.w3.org/ns/oa#start', 'http://www.w3.org/ns/oa#end'];
for(var i = 0; i < x.length; i++){
for(var j = 0; j < properties.length; j++){
if(properties[j] in x[i]) {
if (properties[j] == 'http://www.w3.org/ns/oa#start' || properties[j] == 'http://www.w3.org/ns/oa#end') {
x[i][properties[j]] = {
'@type': 'http://www.w3.org/2001/XMLSchema#nonNegativeInteger',
'@value': x[i][properties[j]]['@value']
};
}
else {
x[i][properties[j]] = {
'@type': 'http://www.w3.org/2001/XMLSchema#dateTime',
'@value': x[i][properties[j]]['@value']
};
}
}
}
}
var x = transformJsonldContextURLScheme(x);
data = JSON.stringify(x);
break;
}
return data;
}
function transformJsonldContextURLScheme(data) {
// console.log(data)
if (typeof data["@context"] === "string") {
data["@context"] = data["@context"].replace(/^http:/, 'https:');
}
// else if (typeof data["@context"] === "object") {
// for (var key in data["@context"]) {
// if (data["@context"].hasOwnProperty(key) && typeof data["@context"][key] === "string") {
// data["@context"][key] = data["@context"][key].replace(/^http:/, 'https:');
// }
// }
// }
return data;
}
function getSerialization(data, fromContentType, toContentType, serializeOptions, requestedType) {
// console.log('- - -' + fromContentType + ' ' + toContentType + ' ' + requestedType)
if(fromContentType == 'application/ld+json'){
try { JSON.parse(data) }
catch(error) {
return Promise.resolve({
'fromContentType': fromContentType,
'toContentType': toContentType,
'result': 'fail',
'data': error });
}
}
return serializeData(data, fromContentType, toContentType, serializeOptions).then(
function(transformedData){
var outputData = (fromContentType == toContentType) ? data : transformedData;
// console.log(outputData);
//XXX: Temporary workarounds until bugs are resolved upstream
if(acceptRDFaTypes.indexOf(fromContentType) > -1){
outputData = applyParserFixes(outputData, fromContentType, toContentType);
}
if(requestedType){
if(requestedType == toContentType || acceptRDFaTypes.indexOf(requestedType) > -1) {
return {
'fromContentType': fromContentType,
'toContentType': toContentType,
'result': 'pass',
'data': outputData };
}
else {
// console.log(' ' + fromContentType + ' ' + toContentType + ' ' + requestedType)
return getSerialization(data, fromContentType, requestedType, serializeOptions, requestedType);
}
}
else {
return {
'fromContentType': fromContentType,
'toContentType': toContentType,
'result': 'pass',
'data': outputData };
}
},
function(error){
// console.log(error);
return Promise.resolve({
'fromContentType': fromContentType,
'toContentType': toContentType,
'result': 'fail',
'data': error });
});
}
function handleResource(req, res, next, options){
options = options || {};
// console.log(options);
switch(req.method){
case 'GET': case 'HEAD': case 'OPTIONS':
break;
case 'POST': case 'PUT':
return postContainer(req, res, next, options);
break;
default:
res.status(405);
res.set('Allow', 'GET, HEAD, OPTIONS');
res.end();
return;
break;
}
var requestedPathMimeType = mime.lookup(req.requestedPath);
// console.log(req.requestedType)
// console.log(requestedPathMimeType);
// console.log(req.accepts(requestedPathMimeType));
// console.log(req.accepts(acceptRDFTypes));
// console.log(acceptRDFTypes.indexOf(requestedPathMimeType));
// console.log(acceptRDFTypes.indexOf(req.requestedType));
if(!req.accepts(requestedPathMimeType) && !req.requestedType){
resStatus(res, 406);