v0.40
Dave Winer
10 years ago
parent
887200f616
commit
e0db0c2c7b
@ -0,0 +1,308 @@
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var myVersion = "0.40", myProductName = "pagePark", myPort = 80;
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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 pageParkPrefs = {
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myPort: 80
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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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};
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var fnameStats = "prefs/stats.json";
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var domainsPath = "domains/";
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var httpDefaultFilename = "index.html";
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//routines from utils.js, fs.js
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function getBoolean (val) {
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switch (typeof (val)) {
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case "string":
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if (val.toLowerCase () == "true") {
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return (true);
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}
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break;
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case "boolean":
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return (val);
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break;
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case "number":
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if (val != 0) {
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return (true);
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}
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break;
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}
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return (false);
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}
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function jsonStringify (jstruct) {
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return (JSON.stringify (jstruct, undefined, 4));
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}
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function secondsSince (when) {
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var now = new Date ();
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when = new Date (when);
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return ((now - when) / 1000);
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}
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function endsWith (s, possibleEnding, flUnicase) {
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if ((s == undefined) || (s.length == 0)) {
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return (false);
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}
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var ixstring = s.length - 1;
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if (flUnicase == undefined) {
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flUnicase = true;
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}
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if (flUnicase) {
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for (var i = possibleEnding.length - 1; i >= 0; i--) {
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if (s [ixstring--].toLowerCase () != possibleEnding [i].toLowerCase ()) {
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return (false);
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}
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}
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}
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else {
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for (var i = possibleEnding.length - 1; i >= 0; i--) {
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if (s [ixstring--] != possibleEnding [i]) {
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return (false);
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}
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}
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}
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return (true);
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}
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function stringContains (s, whatItMightContain, flUnicase) {
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if (flUnicase == undefined) {
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flUnicase = true;
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}
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if (flUnicase) {
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s = s.toLowerCase ();
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whatItMightContain = whatItMightContain.toLowerCase ();
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}
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return (s.indexOf (whatItMightContain) != -1);
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}
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function stringCountFields (s, chdelim) {
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var ct = 1;
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if (s.length == 0) {
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return (0);
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}
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for (var i = 0; i < s.length; i++) {
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if (s [i] == chdelim) {
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ct++;
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}
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}
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return (ct)
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}
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function stringNthField (s, chdelim, n) {
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var splits = s.split (chdelim);
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if (splits.length >= n) {
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return splits [n-1];
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}
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return ("");
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}
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function fsSureFilePath (path, callback) {
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var splits = path.split ("/"), path = "";
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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 writeStats (fname, stats) {
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fsSureFilePath (fname, function () {
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fs.writeFile (fname, jsonStringify (stats), function (err) {
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if (err) {
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console.log ("writeStats: error == " + err.message);
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}
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});
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});
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}
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function readStats (f, stats, callback) {
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fs.exists (f, function (flExists) {
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if (flExists) {
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fs.readFile (f, function (err, data) {
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if (err) {
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console.log ("readStats: error reading file " + f + " == " + err.message)
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}
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else {
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var storedStats = JSON.parse (data.toString ());
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for (var x in storedStats) {
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stats [x] = storedStats [x];
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}
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writeStats (f, stats);
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}
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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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else {
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writeStats (fname, stats);
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}
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});
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}
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function getMarkdownTemplate (callback) {
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fs.readFile (mdTemplatePath, function (err, data) {
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if (err) {
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httpReadUrl (urlDefaultTemplate, function (s) {
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fs.writeFile (mdTemplatePath, 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 checkPathForIllegalChars (path) {
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function isIllegal (ch) {
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if (isAlpha (ch) || 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 " ":
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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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return (true);
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}
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function handleHttpRequest (httpRequest, httpResponse) {
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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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try {
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var parsedUrl = urlpack.parse (httpRequest.url, true), host, port;
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var lowercasepath = parsedUrl.pathname.toLowerCase (), now = new Date ();
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//set host, port
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host = httpRequest.headers.host;
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if (stringContains (host, ":")) {
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port = stringNthField (host, ":", 2);
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host = stringNthField (host, ":", 1);
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}
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console.log ("Received request: " + httpRequest.url);
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switch (lowercasepath) {
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case "/version":
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httpResponse.writeHead (200, {"Content-Type": "text/plain"});
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httpResponse.end (myVersion);
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break;
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case "/now":
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httpResponse.writeHead (200, {"Content-Type": "text/plain"});
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httpResponse.end (now.toString ());
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break;
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default: //see if it's a path in the domains folder, if not 404
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var f = domainsPath + host + parsedUrl.pathname;
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if (checkPathForIllegalChars (f)) {
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fs.stat (f, function (err, stats) {
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if (err) {
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return404 ();
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}
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else {
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if (stats.isDirectory ()) {
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if (!endsWith (f, "/")) {
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f += "/";
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}
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f += "index.html";
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}
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fs.readFile (f, function (err, data) {
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if (err) {
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httpResponse.writeHead (500, {"Content-Type": "text/plain"});
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httpResponse.end ("There was an error reading the file.");
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}
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else {
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var ext = stringLower (stringLastField (f, ".")), type = httpExt2MIME (ext);
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console.log ("handleHttpRequest: f == " + f + ", type == " + type);
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switch (ext) {
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case "js":
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try {
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var val = eval (data.toString ());
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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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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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break;
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case "md":
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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 = stringLastField (f, "/");
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var s = 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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break;
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default:
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httpResponse.writeHead (200, {"Content-Type": type});
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httpResponse.end (data);
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break;
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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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else {
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httpResponse.writeHead (500, {"Content-Type": "text/plain"});
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httpResponse.end ("The file name contains illegal characters.");
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}
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break;
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}
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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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}
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function startup () {
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readStats (fnamePrefs, pageParkPrefs, function () {
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readStats (fnameStats, pageParkStats, function () {
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var now = new Date ();
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console.log (myProductName + " v" + myVersion + ".");
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pageParkStats.ctStarts++;
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pageParkStats.whenLastStart = now;
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writeStats (fnameStats, pageParkStats);
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http.createServer (handleHttpRequest).listen (pageParkPrefs.myPort);
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});
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});
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}
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startup ();
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