mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-16 06:44:50 +00:00
315 lines
9.0 KiB
JavaScript
315 lines
9.0 KiB
JavaScript
/*\
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title: $:/core/modules/commands/server.js
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type: application/javascript
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module-type: command
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Serve tiddlers over http
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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if($tw.node) {
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var util = require("util"),
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fs = require("fs"),
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url = require("url"),
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path = require("path"),
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http = require("http");
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}
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exports.info = {
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name: "server",
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synchronous: true
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};
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/*
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A simple HTTP server with regexp-based routes
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*/
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function SimpleServer(options) {
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this.routes = options.routes || [];
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this.wiki = options.wiki;
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this.variables = options.variables || {};
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}
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SimpleServer.prototype.set = function(obj) {
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var self = this;
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$tw.utils.each(obj,function(value,name) {
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self.variables[name] = value;
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});
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};
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SimpleServer.prototype.get = function(name) {
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return this.variables[name];
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};
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SimpleServer.prototype.addRoute = function(route) {
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this.routes.push(route);
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};
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SimpleServer.prototype.findMatchingRoute = function(request,state) {
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var pathprefix = this.get("pathprefix") || "";
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for(var t=0; t<this.routes.length; t++) {
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var potentialRoute = this.routes[t],
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pathRegExp = potentialRoute.path,
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pathname = state.urlInfo.pathname,
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match;
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if(pathprefix) {
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if(pathname.substr(0,pathprefix.length) === pathprefix) {
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pathname = pathname.substr(pathprefix.length);
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match = potentialRoute.path.exec(pathname);
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} else {
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match = false;
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}
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} else {
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match = potentialRoute.path.exec(pathname);
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}
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if(match && request.method === potentialRoute.method) {
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state.params = [];
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for(var p=1; p<match.length; p++) {
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state.params.push(match[p]);
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}
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return potentialRoute;
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}
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}
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return null;
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};
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SimpleServer.prototype.checkCredentials = function(request,incomingUsername,incomingPassword) {
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var header = request.headers.authorization || "",
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token = header.split(/\s+/).pop() || "",
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auth = $tw.utils.base64Decode(token),
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parts = auth.split(/:/),
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username = parts[0],
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password = parts[1];
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if(incomingUsername === username && incomingPassword === password) {
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return "ALLOWED";
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} else {
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return "DENIED";
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}
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};
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SimpleServer.prototype.requestHandler = function(request,response) {
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// Compose the state object
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var self = this;
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var state = {};
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state.wiki = self.wiki;
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state.server = self;
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state.urlInfo = url.parse(request.url);
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// Find the route that matches this path
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var route = self.findMatchingRoute(request,state);
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// Check for the username and password if we've got one
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var username = self.get("username"),
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password = self.get("password");
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if(username && password) {
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// Check they match
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if(self.checkCredentials(request,username,password) !== "ALLOWED") {
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var servername = state.wiki.getTiddlerText("$:/SiteTitle") || "TiddlyWiki5";
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response.writeHead(401,"Authentication required",{
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"WWW-Authenticate": 'Basic realm="Please provide your username and password to login to ' + servername + '"'
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});
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response.end();
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return;
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}
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}
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// Return a 404 if we didn't find a route
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if(!route) {
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response.writeHead(404);
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response.end();
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return;
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}
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// Set the encoding for the incoming request
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// TODO: Presumably this would need tweaking if we supported PUTting binary tiddlers
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request.setEncoding("utf8");
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// Dispatch the appropriate method
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switch(request.method) {
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case "GET": // Intentional fall-through
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case "DELETE":
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route.handler(request,response,state);
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break;
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case "PUT":
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var data = "";
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request.on("data",function(chunk) {
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data += chunk.toString();
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});
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request.on("end",function() {
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state.data = data;
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route.handler(request,response,state);
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});
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break;
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}
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};
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SimpleServer.prototype.listen = function(port,host) {
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http.createServer(this.requestHandler.bind(this)).listen(port,host);
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};
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var Command = function(params,commander,callback) {
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this.params = params;
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this.commander = commander;
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this.callback = callback;
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// Set up server
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this.server = new SimpleServer({
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wiki: this.commander.wiki
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});
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// Add route handlers
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this.server.addRoute({
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method: "PUT",
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path: /^\/recipes\/default\/tiddlers\/(.+)$/,
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handler: function(request,response,state) {
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var title = decodeURIComponent(state.params[0]),
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fields = JSON.parse(state.data);
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// Pull up any subfields in the `fields` object
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if(fields.fields) {
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$tw.utils.each(fields.fields,function(field,name) {
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fields[name] = field;
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});
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delete fields.fields;
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}
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// Remove any revision field
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if(fields.revision) {
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delete fields.revision;
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}
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state.wiki.addTiddler(new $tw.Tiddler(state.wiki.getCreationFields(),fields,{title: title},state.wiki.getModificationFields()));
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var changeCount = state.wiki.getChangeCount(title).toString();
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response.writeHead(204, "OK",{
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Etag: "\"default/" + encodeURIComponent(title) + "/" + changeCount + ":\"",
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"Content-Type": "text/plain"
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});
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response.end();
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}
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});
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this.server.addRoute({
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method: "DELETE",
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path: /^\/bags\/default\/tiddlers\/(.+)$/,
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handler: function(request,response,state) {
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var title = decodeURIComponent(state.params[0]);
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state.wiki.deleteTiddler(title);
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response.writeHead(204, "OK", {
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"Content-Type": "text/plain"
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});
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response.end();
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}
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});
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this.server.addRoute({
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method: "GET",
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path: /^\/$/,
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handler: function(request,response,state) {
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response.writeHead(200, {"Content-Type": state.server.get("serveType")});
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var text = state.wiki.renderTiddler(state.server.get("renderType"),state.server.get("rootTiddler"));
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response.end(text,"utf8");
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}
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});
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this.server.addRoute({
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method: "GET",
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path: /^\/status$/,
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handler: function(request,response,state) {
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response.writeHead(200, {"Content-Type": "application/json"});
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var text = JSON.stringify({
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username: state.server.get("username"),
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space: {
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recipe: "default"
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},
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tiddlywiki_version: $tw.version
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});
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response.end(text,"utf8");
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}
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});
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this.server.addRoute({
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method: "GET",
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path: /^\/favicon.ico$/,
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handler: function(request,response,state) {
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response.writeHead(200, {"Content-Type": "image/x-icon"});
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var buffer = state.wiki.getTiddlerText("$:/favicon.ico","");
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response.end(buffer,"base64");
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}
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});
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this.server.addRoute({
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method: "GET",
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path: /^\/recipes\/default\/tiddlers.json$/,
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handler: function(request,response,state) {
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response.writeHead(200, {"Content-Type": "application/json"});
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var tiddlers = [];
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state.wiki.forEachTiddler({sortField: "title"},function(title,tiddler) {
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var tiddlerFields = {};
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$tw.utils.each(tiddler.fields,function(field,name) {
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if(name !== "text") {
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tiddlerFields[name] = tiddler.getFieldString(name);
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}
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});
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tiddlerFields.revision = state.wiki.getChangeCount(title);
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tiddlerFields.type = tiddlerFields.type || "text/vnd.tiddlywiki";
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tiddlers.push(tiddlerFields);
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});
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var text = JSON.stringify(tiddlers);
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response.end(text,"utf8");
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}
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});
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this.server.addRoute({
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method: "GET",
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path: /^\/recipes\/default\/tiddlers\/(.+)$/,
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handler: function(request,response,state) {
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var title = decodeURIComponent(state.params[0]),
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tiddler = state.wiki.getTiddler(title),
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tiddlerFields = {},
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knownFields = [
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"bag", "created", "creator", "modified", "modifier", "permissions", "recipe", "revision", "tags", "text", "title", "type", "uri"
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];
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if(tiddler) {
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$tw.utils.each(tiddler.fields,function(field,name) {
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var value = tiddler.getFieldString(name);
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if(knownFields.indexOf(name) !== -1) {
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tiddlerFields[name] = value;
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} else {
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tiddlerFields.fields = tiddlerFields.fields || {};
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tiddlerFields.fields[name] = value;
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}
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});
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tiddlerFields.revision = state.wiki.getChangeCount(title);
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tiddlerFields.type = tiddlerFields.type || "text/vnd.tiddlywiki";
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response.writeHead(200, {"Content-Type": "application/json"});
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response.end(JSON.stringify(tiddlerFields),"utf8");
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} else {
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response.writeHead(404);
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response.end();
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}
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}
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});
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};
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Command.prototype.execute = function() {
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if(!$tw.boot.wikiTiddlersPath) {
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$tw.utils.warning("Warning: Wiki folder '" + $tw.boot.wikiPath + "' does not exist or is missing a tiddlywiki.info file");
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}
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var port = this.params[0] || "8080",
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rootTiddler = this.params[1] || "$:/core/save/all",
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renderType = this.params[2] || "text/plain",
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serveType = this.params[3] || "text/html",
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username = this.params[4],
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password = this.params[5],
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host = this.params[6] || "127.0.0.1",
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pathprefix = this.params[7];
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this.server.set({
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rootTiddler: rootTiddler,
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renderType: renderType,
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serveType: serveType,
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username: username,
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password: password,
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pathprefix: pathprefix
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});
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this.server.listen(port,host);
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$tw.utils.log("Serving on " + host + ":" + port,"brown/orange");
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$tw.utils.log("(press ctrl-C to exit)","red");
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// Warn if required plugins are missing
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if(!$tw.wiki.getTiddler("$:/plugins/tiddlywiki/tiddlyweb") || !$tw.wiki.getTiddler("$:/plugins/tiddlywiki/filesystem")) {
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$tw.utils.warning("Warning: Plugins required for client-server operation (\"tiddlywiki/filesystem\" and \"tiddlywiki/tiddlyweb\") are missing from tiddlywiki.info file");
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}
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return null;
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};
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exports.Command = Command;
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})();
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