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var myVersion = "0.61t", myProductName = "PagePark";
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//The MIT License (MIT)
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//Copyright (c) 2014 Dave Winer
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//Permission is hereby granted, free of charge, to any person obtaining a copy
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//of this software and associated documentation files (the "Software"), to deal
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//in the Software without restriction, including without limitation the rights
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//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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//copies of the Software, and to permit persons to whom the Software is
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//furnished to do so, subject to the following conditions:
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//The above copyright notice and this permission notice shall be included in all
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//copies or substantial portions of the Software.
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//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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//SOFTWARE.
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//structured listing: http://scripting.com/listings/pagepark.html
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var fs = require ("fs");
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var request = require ("request");
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var urlpack = require ("url");
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var http = require ("http");
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var marked = require ("marked");
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var dns = require ("dns");
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var mime = require ("mime"); //1/8/15 by DW
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var utils = require ("./lib/utils.js"); //1/18/15 by DW
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var opmlLib = require ("./lib/opml.js"); //6/23/15 by DW
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var folderPathFromEnv = process.env.pageparkFolderPath; //1/3/15 by DW
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var pageparkPrefs = {
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myPort: 1339, //1/8/15 by DW -- was 80, see note in readme.md
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indexFilename: "index",
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flProcessScriptFiles: true, extScriptFiles: "js", //5/5/15 by DW
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flProcessMarkdownFiles: true, extMarkdownFiles: "md", //5/5/15 by DW
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flProcessOpmlFiles: true, extOpmlFiles: "opml" //6/23/15 by DW
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};
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var fnamePrefs = "prefs/prefs.json";
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var pageparkStats = {
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ctStarts: 0,
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whenLastStart: new Date (0),
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ctHits: 0, ctHitsToday: 0,
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whenLastHit: new Date (0),
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hitsByDomain: {}
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};
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var fnameStats = "prefs/stats.json", flStatsDirty = false;
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var domainsPath = "domains/";
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var configFname = "/config.json";
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var mdTemplatePath = "prefs/mdTemplate.txt";
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var urlDefaultMarkdownTemplate = "http://fargo.io/code/pagepark/defaultmarkdowntemplate.txt";
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var opmlTemplatePath = "prefs/opmlTemplate.txt";
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var urlDefaultOpmlTemplate = "http://fargo.io/code/pagepark/defaultopmltemplate.txt";
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function fsSureFilePath (path, callback) {
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var splits = path.split ("/");
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path = ""; //1/8/15 by DW
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if (splits.length > 0) {
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function doLevel (levelnum) {
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if (levelnum < (splits.length - 1)) {
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path += splits [levelnum] + "/";
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fs.exists (path, function (flExists) {
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if (flExists) {
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doLevel (levelnum + 1);
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}
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else {
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fs.mkdir (path, undefined, function () {
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doLevel (levelnum + 1);
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});
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}
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});
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}
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else {
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if (callback != undefined) {
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callback ();
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}
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}
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}
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doLevel (0);
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}
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else {
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if (callback != undefined) {
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callback ();
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}
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}
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}
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function httpExt2MIME (ext) { //12/24/14 by DW
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mime.default_type = "text/plain";
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return (mime.lookup (ext));
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}
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function httpReadUrl (url, callback) {
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request (url, function (error, response, body) {
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if (!error && (response.statusCode == 200)) {
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callback (body)
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}
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});
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}
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function getFullFilePath (relpath) { //1/3/15 by DW
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var folderpath = folderPathFromEnv;
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if (folderpath == undefined) { //the environment variable wasn't specified
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return (relpath);
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}
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if (!utils.endsWith (folderpath, "/")) {
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folderpath += "/";
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}
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if (utils.beginsWith (relpath, "/")) {
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relpath = utils.stringDelete (relpath, 1, 1);
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}
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return (folderpath + relpath);
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}
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function getTemplate (myTemplatePath, urlDefaultTemplate, callback) {
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var f = getFullFilePath (myTemplatePath);
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fs.readFile (f, function (err, data) {
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if (err) {
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httpReadUrl (urlDefaultTemplate, function (s) {
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fs.writeFile (myTemplatePath, s, function (err) {
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if (callback != undefined) {
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callback (s);
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}
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});
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});
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}
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else {
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if (callback != undefined) {
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callback (data.toString ());
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}
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}
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});
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}
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function getMarkdownTemplate (callback) {
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getTemplate (mdTemplatePath, urlDefaultMarkdownTemplate, callback);
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}
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function getOpmlTemplate (callback) { //6/23/15 by DW
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getTemplate (opmlTemplatePath, urlDefaultOpmlTemplate, callback);
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}
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function checkPathForIllegalChars (path) {
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function isIllegal (ch) {
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if (utils.isAlpha (ch) || utils.isNumeric (ch)) {
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return (false);
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}
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switch (ch) {
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case "/": case "_": case "-": case ".": case " ": case "*":
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return (false);
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}
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return (true);
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}
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for (var i = 0; i < path.length; i++) {
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if (isIllegal (path [i])) {
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return (false);
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}
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}
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if (utils.stringContains (path, "./")) {
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return (false);
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}
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return (true);
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}
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function everySecond () {
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if (flStatsDirty) {
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writeStats (fnameStats, pageparkStats);
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flStatsDirty = false;
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}
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}
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function handleHttpRequest (httpRequest, httpResponse) {
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function hasAcceptHeader (theHeader) {
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if (httpRequest.headers.accept === undefined) {
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return (false);
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}
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else {
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var split = httpRequest.headers.accept.split (", ");
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for (var i = 0; i < split.length; i++) {
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if (split [i] == theHeader) {
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return (true);
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}
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}
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return (false);
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}
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}
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function getDomainFolder (host, callback) { //5/11/15 by DW
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var folder = getFullFilePath (domainsPath);
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var domainfolder = folder + host;
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fs.exists (domainfolder, function (flExists) {
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if (flExists) {
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callback (domainfolder, host);
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}
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else {
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if (utils.stringCountFields (host, ".") == 3) {
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var firstpart = utils.stringNthField (host, ".", 1);
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var wildcardhost = "*" + utils.stringDelete (host, 1, firstpart.length);
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domainfolder = folder + wildcardhost;
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callback (domainfolder, wildcardhost);
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}
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else {
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callback (domainfolder, host);
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}
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}
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});
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}
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function getConfigFile (host, callback) {
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var config = {
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urlSiteRedirect: undefined,
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urlSiteContents: undefined,
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flProcessScriptFiles: true,
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flProcessMarkdownFiles: true,
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flProcessOpmlFiles: true,
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extScriptFiles: pageparkPrefs.extScriptFiles,
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extMarkdownFiles: pageparkPrefs.extMarkdownFiles,
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extOpmlFiles: pageparkPrefs.extOpmlFiles
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};
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var f = getFullFilePath (domainsPath) + host + configFname;
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fs.readFile (f, function (err, data) {
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if (err) {
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callback (config);
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}
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else {
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try {
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var storedConfig = JSON.parse (data.toString ());
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for (var x in storedConfig) {
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config [x] = storedConfig [x];
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}
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callback (config);
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}
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catch (err) {
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console.log ("getConfigFile: error reading " + configFname + " file for host " + host + ". " + err.message);
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callback (config);
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}
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}
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});
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}
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function return404 () {
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httpResponse.writeHead (404, {"Content-Type": "text/plain"});
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httpResponse.end ("The file was not found.");
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}
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function findIndexFile (folder, callback) {
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fs.readdir (folder, function (err, list) {
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for (var i = 0; i < list.length; i++) {
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var fname = list [i];
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if (utils.stringCountFields (fname, ".") == 2) { //something like xxx.yyy
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if (utils.stringNthField (fname, ".", 1).toLowerCase () == pageparkPrefs.indexFilename) { //something like index.wtf
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callback (folder + fname);
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return;
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}
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}
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}
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return404 ();
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});
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}
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function serveFile (f, config) {
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var formatParam = parsedUrl.query.format.toLowerCase (); //url ends with ?format=abc -- 6/24/15 by DW
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function httpReturn (val, type) { //2/17/15 by DW
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httpResponse.writeHead (200, {"Content-Type": type});
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httpResponse.end (val.toString ());
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}
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function defaultReturn (type, data) {
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httpResponse.writeHead (200, {"Content-Type": type});
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httpResponse.end (data);
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}
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fs.readFile (f, function (err, data) {
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if (err) {
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return404 ();
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}
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else {
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var ext = utils.stringLastField (f, ".").toLowerCase (), type = httpExt2MIME (ext);
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switch (ext) {
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case config.extScriptFiles:
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if (pageparkPrefs.flProcessScriptFiles && config.flProcessScriptFiles) {
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try {
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var val = eval (data.toString ());
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if (val !== undefined) { //2/17/15 by DW
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httpResponse.writeHead (200, {"Content-Type": "text/html"});
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httpResponse.end (val.toString ());
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}
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}
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catch (err) {
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httpResponse.writeHead (500, {"Content-Type": "text/plain"});
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httpResponse.end ("Error running " + parsedUrl.pathname + ": \"" + err.message + "\"");
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}
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}
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else {
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defaultReturn (type, data);
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}
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break;
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case config.extMarkdownFiles:
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if (pageparkPrefs.flProcessMarkdownFiles && config.flProcessMarkdownFiles) {
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getMarkdownTemplate (function (theTemplate) {
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var mdtext = data.toString (), pagetable = new Object ();
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pagetable.bodytext = marked (mdtext);
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pagetable.title = utils.stringLastField (f, "/");
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var s = utils.multipleReplaceAll (theTemplate, pagetable, false, "[%", "%]");
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httpResponse.writeHead (200, {"Content-Type": "text/html"});
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httpResponse.end (s);
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});
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}
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else {
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defaultReturn (type, data);
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}
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break;
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case config.extOpmlFiles: //6/23/15 by DW
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var flReturnHtml = (!hasAcceptHeader ("text/x-opml")) && (formatParam != "opml");
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if (pageparkPrefs.flProcessOpmlFiles && config.flProcessOpmlFiles && flReturnHtml) { //6/24/15 by DW
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getOpmlTemplate (function (theTemplate) {
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var opmltext = data.toString (), pagetable = new Object ();
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opmlLib.readOpmlString (opmltext, function (theOutline) {
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pagetable.bodytext = utils.jsonStringify (theOutline);
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pagetable.title = utils.stringLastField (f, "/");
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var s = utils.multipleReplaceAll (theTemplate, pagetable, false, "[%", "%]");
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httpResponse.writeHead (200, {"Content-Type": "text/html"});
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|
httpResponse.end (s);
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|
|
});
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});
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|
|
}
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|
|
else {
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|
|
defaultReturn (type, data);
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|
|
}
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|
|
break;
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|
|
default:
|
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|
|
defaultReturn (type, data);
|
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|
|
break;
|
|
|
|
}
|
|
|
|
}
|
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|
|
});
|
|
|
|
}
|
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|
|
function delegateRequest (urlToDelegateTo) {
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|
|
var theRequest = {
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|
|
url: urlToDelegateTo,
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|
|
followRedirect: false, //5/26/15 by DW
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|
|
headers: {
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|
|
"X-Forwarded-Host": host,
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|
|
"X-Forwarded-For": httpRequest.connection.remoteAddress
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|
|
}
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|
|
};
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|
|
try {
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|
|
httpRequest.pipe (request (theRequest)).pipe (httpResponse);
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|
|
}
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|
|
catch (tryError) {
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|
|
httpResponse.writeHead (500, {"Content-Type": "text/plain"});
|
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|
|
httpResponse.end (tryError.message);
|
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|
|
}
|
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|
|
}
|
|
|
|
function findMappedDomain (domain, callback) { //5/23/15 by DW
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|
|
|
for (var x in pageparkPrefs.domainMap) {
|
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|
|
if (utils.endsWith (domain, x)) {
|
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|
|
callback (pageparkPrefs.domainMap [x]); //a mapped domain, delegate to this port
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|
|
return;
|
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|
|
}
|
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|
|
}
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|
|
callback (undefined); //it's one of our domains, handle it here
|
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|
|
}
|
|
|
|
|
|
|
|
try {
|
|
|
|
var parsedUrl = urlpack.parse (httpRequest.url, true), host, lowerhost, port, referrer;
|
|
|
|
var lowerpath = parsedUrl.pathname.toLowerCase (), now = new Date ();
|
|
|
|
//set host, port
|
|
|
|
host = httpRequest.headers.host;
|
|
|
|
if (utils.stringContains (host, ":")) {
|
|
|
|
port = utils.stringNthField (host, ":", 2);
|
|
|
|
host = utils.stringNthField (host, ":", 1);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
port = 80;
|
|
|
|
}
|
|
|
|
lowerhost = host.toLowerCase ();
|
|
|
|
//set referrer
|
|
|
|
referrer = httpRequest.headers.referer;
|
|
|
|
if (referrer == undefined) {
|
|
|
|
referrer = "";
|
|
|
|
}
|
|
|
|
|
|
|
|
//stats
|
|
|
|
//hits by domain
|
|
|
|
if (pageparkStats.hitsByDomain [lowerhost] == undefined) {
|
|
|
|
pageparkStats.hitsByDomain [lowerhost] = 1;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
pageparkStats.hitsByDomain [lowerhost]++;
|
|
|
|
}
|
|
|
|
//hits today
|
|
|
|
if (!utils.sameDay (now, pageparkStats.whenLastHit)) { //day rollover
|
|
|
|
pageparkStats.ctHitsToday = 0;
|
|
|
|
}
|
|
|
|
pageparkStats.ctHits++;
|
|
|
|
pageparkStats.ctHitsToday++;
|
|
|
|
pageparkStats.whenLastHit = now;
|
|
|
|
flStatsDirty = true;
|
|
|
|
|
|
|
|
//log the request
|
|
|
|
dns.reverse (httpRequest.connection.remoteAddress, function (err, domains) {
|
|
|
|
var client = httpRequest.connection.remoteAddress;
|
|
|
|
if (!err) {
|
|
|
|
if (domains.length > 0) {
|
|
|
|
client = domains [0];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (client == undefined) { //1/25/15 by DW
|
|
|
|
client = "";
|
|
|
|
}
|
|
|
|
console.log (now.toLocaleTimeString () + " " + httpRequest.method + " " + host + ":" + port + " " + lowerpath + " " + referrer + " " + client);
|
|
|
|
});
|
|
|
|
//handle the request
|
|
|
|
findMappedDomain (host, function (thePort) {
|
|
|
|
if (thePort !== undefined) {
|
|
|
|
var urlRemote;
|
|
|
|
parsedUrl.protocol = "http:";
|
|
|
|
parsedUrl.host = host + ":" + thePort;
|
|
|
|
parsedUrl.hostname = host;
|
|
|
|
parsedUrl.port = thePort;
|
|
|
|
urlRemote = urlpack.format (parsedUrl);
|
|
|
|
delegateRequest (urlRemote);
|
|
|
|
}
|
|
|
|
else { //no mapping, we handle the request
|
|
|
|
getDomainFolder (host, function (domainfolder, actualhost) { //might be a wildcard folder
|
|
|
|
var f = domainfolder + parsedUrl.pathname;
|
|
|
|
if (checkPathForIllegalChars (f)) {
|
|
|
|
fsSureFilePath (domainsPath, function () { //make sure domains folder exists
|
|
|
|
getConfigFile (actualhost, function (config) { //get config.json, if it exists -- 1/18/15 by DW
|
|
|
|
if (config != undefined) {
|
|
|
|
if (config.urlSiteRedirect != undefined) {
|
|
|
|
var urlRedirect = config.urlSiteRedirect + parsedUrl.pathname;
|
|
|
|
httpResponse.writeHead (302, {"Location": urlRedirect, "Content-Type": "text/plain"});
|
|
|
|
httpResponse.end ("Temporary redirect to " + urlRedirect + ".");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (config.urlSiteContents != undefined) { //4/26/15 by DW -- v0.55
|
|
|
|
delegateRequest (config.urlSiteContents + httpRequest.url);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (config.s3Path != undefined) { //5/11/15 PM by DW v0.58
|
|
|
|
var firstPartOfHost = utils.stringNthField (host, ".", 1); //if it's dave.smallpict.com, this value is "dave"
|
|
|
|
var s3url = "http:/" + config.s3Path + firstPartOfHost + parsedUrl.pathname; //xxx
|
|
|
|
request (s3url, function (error, response, body) {
|
|
|
|
if (error) {
|
|
|
|
httpResponse.writeHead (500, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end ("Error accessing S3 data: " + error.message);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
httpResponse.writeHead (response.statusCode, {"Content-Type": response.headers ["content-type"]});
|
|
|
|
httpResponse.end (body);
|
|
|
|
}
|
|
|
|
});
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
fs.stat (f, function (err, stats) {
|
|
|
|
if (err) {
|
|
|
|
switch (lowerpath) {
|
|
|
|
case "/version":
|
|
|
|
httpResponse.writeHead (200, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end (myVersion);
|
|
|
|
break;
|
|
|
|
case "/now":
|
|
|
|
httpResponse.writeHead (200, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end (now.toString ());
|
|
|
|
break;
|
|
|
|
case "/status":
|
|
|
|
var status = {
|
|
|
|
prefs: pageparkPrefs,
|
|
|
|
status: pageparkStats
|
|
|
|
}
|
|
|
|
httpResponse.writeHead (200, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end (utils.jsonStringify (status));
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return404 ();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if (stats.isDirectory ()) {
|
|
|
|
if (!utils.endsWith (f, "/")) {
|
|
|
|
f += "/";
|
|
|
|
}
|
|
|
|
findIndexFile (f, function (findex) {
|
|
|
|
serveFile (findex, config);
|
|
|
|
});
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
serveFile (f, config);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
httpResponse.writeHead (500, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end ("The file name contains illegal characters.");
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
catch (tryError) {
|
|
|
|
httpResponse.writeHead (500, {"Content-Type": "text/plain"});
|
|
|
|
httpResponse.end (tryError.message);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function writeStats (fname, stats, callback) {
|
|
|
|
var f = getFullFilePath (fname);
|
|
|
|
fsSureFilePath (f, function () {
|
|
|
|
fs.writeFile (f, utils.jsonStringify (stats), function (err) {
|
|
|
|
if (err) {
|
|
|
|
console.log ("writeStats: error == " + err.message);
|
|
|
|
}
|
|
|
|
if (callback != undefined) {
|
|
|
|
callback ();
|
|
|
|
}
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
|
|
|
function readStats (fname, stats, callback) {
|
|
|
|
var f = getFullFilePath (fname);
|
|
|
|
fsSureFilePath (f, function () {
|
|
|
|
fs.exists (f, function (flExists) {
|
|
|
|
if (flExists) {
|
|
|
|
fs.readFile (f, function (err, data) {
|
|
|
|
if (err) {
|
|
|
|
console.log ("readStats: error reading file " + f + " == " + err.message)
|
|
|
|
if (callback != undefined) {
|
|
|
|
callback ();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
var storedStats = JSON.parse (data.toString ());
|
|
|
|
for (var x in storedStats) {
|
|
|
|
stats [x] = storedStats [x];
|
|
|
|
}
|
|
|
|
writeStats (fname, stats, function () {
|
|
|
|
if (callback != undefined) {
|
|
|
|
callback ();
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
writeStats (fname, stats, function () {
|
|
|
|
if (callback != undefined) {
|
|
|
|
callback ();
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
|
|
|
function startup () {
|
|
|
|
readStats (fnamePrefs, pageparkPrefs, function () {
|
|
|
|
readStats (fnameStats, pageparkStats, function () {
|
|
|
|
fsSureFilePath (getFullFilePath (domainsPath) + "x", function () { //make sure domains folder exists
|
|
|
|
var now = new Date ();
|
|
|
|
pageparkStats.ctStarts++;
|
|
|
|
pageparkStats.whenLastStart = now;
|
|
|
|
flStatsDirty = true;
|
|
|
|
http.createServer (handleHttpRequest).listen (pageparkPrefs.myPort);
|
|
|
|
console.log (""); console.log (myProductName + " v" + myVersion + " running on port " + pageparkPrefs.myPort + "."); console.log ("");
|
|
|
|
setInterval (everySecond, 1000);
|
|
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
|
|
|
startup ();
|