diff options
Diffstat (limited to 'includes/js/dojox/io/proxy')
| -rw-r--r-- | includes/js/dojox/io/proxy/README | 82 | ||||
| -rw-r--r-- | includes/js/dojox/io/proxy/tests/frag.xml | 4 | ||||
| -rw-r--r-- | includes/js/dojox/io/proxy/tests/xip.html | 62 | ||||
| -rw-r--r-- | includes/js/dojox/io/proxy/xip.js | 441 | ||||
| -rw-r--r-- | includes/js/dojox/io/proxy/xip_client.html | 102 | ||||
| -rw-r--r-- | includes/js/dojox/io/proxy/xip_server.html | 382 |
6 files changed, 0 insertions, 1073 deletions
diff --git a/includes/js/dojox/io/proxy/README b/includes/js/dojox/io/proxy/README deleted file mode 100644 index 8898a56..0000000 --- a/includes/js/dojox/io/proxy/README +++ /dev/null @@ -1,82 +0,0 @@ -------------------------------------------------------------------------------- -Project Name -------------------------------------------------------------------------------- -Version 0.6 -Release date: 01/31/2008 -------------------------------------------------------------------------------- -Project state: -experimental -------------------------------------------------------------------------------- -Credits - James Burke (jburke@dojotoolkit.org) -------------------------------------------------------------------------------- -Project description - -The XHR IFrame Proxy (xip) allows you to do cross-domain XMLHttpRequests (XHRs). -It works by using two iframes, one your domain (xip_client.html), one on the -other domain (xip_server.html). They use fragment IDs in the iframe URLs to pass -messages to each other. The xip.js file defines dojox.io.proxy.xip. This module -intercepts XHR calls made by the Dojo XHR methods (dojo.xhr* methods). The module -returns a facade object that acts like an XHR object. Once send is called on the -facade, the facade's data is serialized, given to xip_client.html. xip_client.html -then passes the serialized data to xip_server.html by changing xip_server.html's -URL fragment ID (the #xxxx part of an URL). xip_server.html deserializes the -message fragments, and does an XHR call, gets the response, and serializes the -data. The serialized data is then passed back to xip_client.html by changing -xip_client.html's fragment ID. Then the response is deserialized and used as -the response inside the facade XHR object that was created by dojox.io.proxy.xip. -------------------------------------------------------------------------------- -Dependencies: - -xip.js: Dojo Core, dojox.data.dom -xip_client.html: none -xip_server.html: none (but see Additional Notes section) -------------------------------------------------------------------------------- -Documentation - -There is some documentation that applies to the Dojo 0.4.x version of these files: -http://dojotoolkit.org/book/dojo-book-0-4/part-5-connecting-pieces/i-o/cross-domain-xmlhttprequest-using-iframe-proxy - -The general theory still applies to this code, but the specifics are different -for the Dojo 0.9+ codebase. Doc updates hopefully after the basic code is ported. - -The current implementation destroys the iframes used for a request after the request -completes. This seems to cause a memory leak, particularly in IE. So, it is not -suited for doing polling cross-domain requests. -------------------------------------------------------------------------------- -Installation instructions - -Grab the following from the Dojox SVN Repository: -http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip.js -http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip_client.html - -Install into the following directory structure: -/dojox/io/proxy/ - -...which should be at the same level as your Dojo checkout. - -Grab the following from the Dojox SVN Repository: -http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/io/proxy/xip_server.html - -and install it on the domain that you want to allow receiving cross-domain -requests. Be sure to read the documentation, the Additional Notes below, and -the in-file comments. -------------------------------------------------------------------------------- -Additional Notes - -xip_client.html and xip_server.html do not work right away. You need to uncomment -out the script tags in the files. Additionally, xip_server.html requires a JS file, -isAllowed.js, to be defined. See the notes in xip_server.html for more informaiton. - -XDOMAIN BUILD INSTRUCTIONS: -The dojox.io.proxy module requires some setup to use with an xdomain build. -The xip_client.html file has to be served from the same domain as your web page. -It cannot be served from the domain that has the xdomain build. Download xip_client.html -and install it on your server. Then set djConfig.xipClientUrl to the local path -of xip_client.html (just use a path, not a whole URL, since it will be on the same -domain as the page). The path to the file should be the path relative to the web -page that is using dojox.io.proxy. - - - - diff --git a/includes/js/dojox/io/proxy/tests/frag.xml b/includes/js/dojox/io/proxy/tests/frag.xml deleted file mode 100644 index 6904bba..0000000 --- a/includes/js/dojox/io/proxy/tests/frag.xml +++ /dev/null @@ -1,4 +0,0 @@ -<response> -<foo>This is the foo text node value</foo> -<bar>This is the bar text node value</bar> -</response> diff --git a/includes/js/dojox/io/proxy/tests/xip.html b/includes/js/dojox/io/proxy/tests/xip.html deleted file mode 100644 index 5a5ba5f..0000000 --- a/includes/js/dojox/io/proxy/tests/xip.html +++ /dev/null @@ -1,62 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" - "http://www.w3.org/TR/html4/strict.dtd"> -<html> -<head> - <title>XHR IFrame Proxy Tests</title> - <style type="text/css"> - @import "../../../../dojo/resources/dojo.css"; - @import "../../../../dijit/themes/tundra/tundra.css"; - @import "../../../../dijit/themes/dijit.css"; - </style> - - <script type="text/javascript" src="../../../../dojo/dojo.js" - djConfig="isDebug:true"></script> - <script type="text/javascript" src="../xip.js"></script> - <script type="text/javascript"> - dojo.require("dojox.io.proxy.xip"); - - function testXmlGet(){ -/* - //Normal xhrGet call. - dojo.xhrGet({ - url: "frag.xml", - handleAs: "xml", - load: function(result, ioArgs){ - var foo = result.getElementsByTagName("foo").item(0); - - dojo.byId("xmlGetOut").innerHTML = "Success: First foobar value is: " + foo.firstChild.nodeValue; - } - }); -*/ - - //xip xhrGet call. - dojo.xhrGet({ - iframeProxyUrl: "../xip_server.html", - url: "tests/frag.xml", - handleAs: "xml", - load: function(result, ioArgs){ - var foo = result.getElementsByTagName("foo").item(0); - - dojo.byId("xmlGetOut").innerHTML = "Success: First foobar value is: " + foo.firstChild.nodeValue; - } - }); - - } - - dojo.addOnLoad(function(){ - - }); - </script> -</head> -<body class="tundra"> - -<h1>XHR IFrame Proxy Tests</h1> -<p>Run this test from a web server, not from local disk.</p> - -<p> -<button onclick="testXmlGet()">Test XML GET</button> -</p> -<div id="xmlGetOut"></div> - -</body> -</html> diff --git a/includes/js/dojox/io/proxy/xip.js b/includes/js/dojox/io/proxy/xip.js deleted file mode 100644 index b88d910..0000000 --- a/includes/js/dojox/io/proxy/xip.js +++ /dev/null @@ -1,441 +0,0 @@ -if(!dojo._hasResource["dojox.io.proxy.xip"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. -dojo._hasResource["dojox.io.proxy.xip"] = true; -dojo.provide("dojox.io.proxy.xip"); - -dojo.require("dojo.io.iframe"); -dojo.require("dojox.data.dom"); - -dojox.io.proxy.xip = { - //summary: Object that implements the iframe handling for XMLHttpRequest - //IFrame Proxying. - //description: Do not use this object directly. See the Dojo Book page - //on XMLHttpRequest IFrame Proxying: - //http://dojotoolkit.org/book/dojo-book-0-4/part-5-connecting-pieces/i-o/cross-domain-xmlhttprequest-using-iframe-proxy - //Usage of XHR IFrame Proxying does not work from local disk in Safari. - - /* - This code is really focused on just sending one complete request to the server, and - receiving one complete response per iframe. The code does not expect to reuse iframes for multiple XHR request/response - sequences. This might be reworked later if performance indicates a need for it. - - xip fragment identifier/hash values have the form: - #id:cmd:realEncodedMessage - - id: some ID that should be unique among message fragments. No inherent meaning, - just something to make sure the hash value is unique so the message - receiver knows a new message is available. - - cmd: command to the receiver. Valid values are: - - init: message used to init the frame. Sent as the first URL when loading - the page. Contains some config parameters. - - loaded: the remote frame is loaded. Only sent from xip_client.html to this module. - - ok: the message that this page sent was received OK. The next message may - now be sent. - - start: the start message of a block of messages (a complete message may - need to be segmented into many messages to get around the limitiations - of the size of an URL that a browser accepts. - - part: indicates this is a part of a message. - - end: the end message of a block of messages. The message can now be acted upon. - If the message is small enough that it doesn't need to be segmented, then - just one hash value message can be sent with "end" as the command. - - To reassemble a segmented message, the realEncodedMessage parts just have to be concatenated - together. - */ - - xipClientUrl: ((dojo.config || djConfig)["xipClientUrl"]) || dojo.moduleUrl("dojox.io.proxy", "xip_client.html"), - - - //MSIE has the lowest limit for URLs with fragment identifiers, - //at around 4K. Choosing a slightly smaller number for good measure. - urlLimit: 4000, - - _callbackName: (dojox._scopeName || "dojox") + ".io.proxy.xip.fragmentReceived", - _state: {}, - _stateIdCounter: 0, - _isWebKit: navigator.userAgent.indexOf("WebKit") != -1, - - - send: function(/*Object*/facade){ - //summary: starts the xdomain request using the provided facade. - //This method first does some init work, then delegates to _realSend. - - var url = this.xipClientUrl; - //Make sure we are not dealing with javascript urls, just to be safe. - if(url.split(":")[0].match(/javascript/i) || facade._ifpServerUrl.split(":")[0].match(/javascript/i)){ - return; - } - - //Make xip_client a full URL. - var colonIndex = url.indexOf(":"); - var slashIndex = url.indexOf("/"); - if(colonIndex == -1 || slashIndex < colonIndex){ - //No colon or we are starting with a / before a colon, so we need to make a full URL. - var loc = window.location.href; - if(slashIndex == 0){ - //Have a full path, just need the domain. - url = loc.substring(0, loc.indexOf("/", 9)) + url; //Using 9 to get past http(s):// - }else{ - url = loc.substring(0, (loc.lastIndexOf("/") + 1)) + url; - } - } - this.fullXipClientUrl = url; - - //Set up an HTML5 messaging listener if postMessage exists. - //As of this writing, this is only useful to get Opera 9.25+ to work. - if(typeof document.postMessage != "undefined"){ - document.addEventListener("message", dojo.hitch(this, this.fragmentReceivedEvent), false); - } - - //Now that we did first time init, always use the realSend method. - this.send = this._realSend; - return this._realSend(facade); //Object - }, - - _realSend: function(facade){ - //summary: starts the actual xdomain request using the provided facade. - var stateId = "XhrIframeProxy" + (this._stateIdCounter++); - facade._stateId = stateId; - - var frameUrl = facade._ifpServerUrl + "#0:init:id=" + stateId + "&client=" - + encodeURIComponent(this.fullXipClientUrl) + "&callback=" + encodeURIComponent(this._callbackName); - - this._state[stateId] = { - facade: facade, - stateId: stateId, - clientFrame: dojo.io.iframe.create(stateId, "", frameUrl), - isSending: false, - serverUrl: facade._ifpServerUrl, - requestData: null, - responseMessage: "", - requestParts: [], - idCounter: 1, - partIndex: 0, - serverWindow: null - }; - - return stateId; //Object - }, - - receive: function(/*String*/stateId, /*String*/urlEncodedData){ - /* urlEncodedData should have the following params: - - responseHeaders - - status - - statusText - - responseText - */ - //Decode response data. - var response = {}; - var nvPairs = urlEncodedData.split("&"); - for(var i = 0; i < nvPairs.length; i++){ - if(nvPairs[i]){ - var nameValue = nvPairs[i].split("="); - response[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - - //Set data on facade object. - var state = this._state[stateId]; - var facade = state.facade; - - facade._setResponseHeaders(response.responseHeaders); - if(response.status == 0 || response.status){ - facade.status = parseInt(response.status, 10); - } - if(response.statusText){ - facade.statusText = response.statusText; - } - if(response.responseText){ - facade.responseText = response.responseText; - - //Fix responseXML. - var contentType = facade.getResponseHeader("Content-Type"); - if(contentType){ - var mimeType = contentType.split(";")[0]; - if(mimeType.indexOf("application/xml") == 0 || mimeType.indexOf("text/xml") == 0){ - facade.responseXML = dojox.data.dom.createDocument(response.responseText, contentType); - } - } - } - facade.readyState = 4; - - this.destroyState(stateId); - }, - - frameLoaded: function(/*String*/stateId){ - var state = this._state[stateId]; - var facade = state.facade; - - var reqHeaders = []; - for(var param in facade._requestHeaders){ - reqHeaders.push(param + ": " + facade._requestHeaders[param]); - } - - var requestData = { - uri: facade._uri - }; - if(reqHeaders.length > 0){ - requestData.requestHeaders = reqHeaders.join("\r\n"); - } - if(facade._method){ - requestData.method = facade._method; - } - if(facade._bodyData){ - requestData.data = facade._bodyData; - } - - this.sendRequest(stateId, dojo.objectToQuery(requestData)); - }, - - destroyState: function(/*String*/stateId){ - var state = this._state[stateId]; - if(state){ - delete this._state[stateId]; - var parentNode = state.clientFrame.parentNode; - parentNode.removeChild(state.clientFrame); - state.clientFrame = null; - state = null; - } - }, - - createFacade: function(){ - if(arguments && arguments[0] && arguments[0].iframeProxyUrl){ - return new dojox.io.proxy.xip.XhrIframeFacade(arguments[0].iframeProxyUrl); - }else{ - return dojox.io.proxy.xip._xhrObjOld.apply(dojo, arguments); - } - }, - - //**** State-bound methods **** - sendRequest: function(stateId, encodedData){ - var state = this._state[stateId]; - if(!state.isSending){ - state.isSending = true; - - state.requestData = encodedData || ""; - - //Get a handle to the server iframe. - state.serverWindow = frames[state.stateId]; - if (!state.serverWindow){ - state.serverWindow = document.getElementById(state.stateId).contentWindow; - } - - //Make sure we have contentWindow, but only do this for non-postMessage - //browsers (right now just opera is postMessage). - if(typeof document.postMessage == "undefined"){ - if(state.serverWindow.contentWindow){ - state.serverWindow = state.serverWindow.contentWindow; - } - } - - this.sendRequestStart(stateId); - } - }, - - sendRequestStart: function(stateId){ - //Break the message into parts, if necessary. - var state = this._state[stateId]; - state.requestParts = []; - var reqData = state.requestData; - var urlLength = state.serverUrl.length; - var partLength = this.urlLimit - urlLength; - var reqIndex = 0; - - while((reqData.length - reqIndex) + urlLength > this.urlLimit){ - var part = reqData.substring(reqIndex, reqIndex + partLength); - //Safari will do some extra hex escaping unless we keep the original hex - //escaping complete. - var percentIndex = part.lastIndexOf("%"); - if(percentIndex == part.length - 1 || percentIndex == part.length - 2){ - part = part.substring(0, percentIndex); - } - state.requestParts.push(part); - reqIndex += part.length; - } - state.requestParts.push(reqData.substring(reqIndex, reqData.length)); - - state.partIndex = 0; - this.sendRequestPart(stateId); - - }, - - sendRequestPart: function(stateId){ - var state = this._state[stateId]; - - if(state.partIndex < state.requestParts.length){ - //Get the message part. - var partData = state.requestParts[state.partIndex]; - - //Get the command. - var cmd = "part"; - if(state.partIndex + 1 == state.requestParts.length){ - cmd = "end"; - }else if (state.partIndex == 0){ - cmd = "start"; - } - - this.setServerUrl(stateId, cmd, partData); - state.partIndex++; - } - }, - - setServerUrl: function(stateId, cmd, message){ - var serverUrl = this.makeServerUrl(stateId, cmd, message); - var state = this._state[stateId]; - - //Safari won't let us replace across domains. - if(this._isWebKit){ - state.serverWindow.location = serverUrl; - }else{ - state.serverWindow.location.replace(serverUrl); - } - }, - - makeServerUrl: function(stateId, cmd, message){ - var state = this._state[stateId]; - var serverUrl = state.serverUrl + "#" + (state.idCounter++) + ":" + cmd; - if(message){ - serverUrl += ":" + message; - } - return serverUrl; - }, - - fragmentReceivedEvent: function(evt){ - //summary: HTML5 document messaging endpoint. Unpack the event to see - //if we want to use it. - if(evt.uri.split("#")[0] == this.fullXipClientUrl){ - this.fragmentReceived(evt.data); - } - }, - - fragmentReceived: function(frag){ - var index = frag.indexOf("#"); - var stateId = frag.substring(0, index); - var encodedData = frag.substring(index + 1, frag.length); - - var msg = this.unpackMessage(encodedData); - var state = this._state[stateId]; - - switch(msg.command){ - case "loaded": - this.frameLoaded(stateId); - break; - case "ok": - this.sendRequestPart(stateId); - break; - case "start": - state.responseMessage = "" + msg.message; - this.setServerUrl(stateId, "ok"); - break; - case "part": - state.responseMessage += msg.message; - this.setServerUrl(stateId, "ok"); - break; - case "end": - this.setServerUrl(stateId, "ok"); - state.responseMessage += msg.message; - this.receive(stateId, state.responseMessage); - break; - } - }, - - unpackMessage: function(encodedMessage){ - var parts = encodedMessage.split(":"); - var command = parts[1]; - encodedMessage = parts[2] || ""; - - var config = null; - if(command == "init"){ - var configParts = encodedMessage.split("&"); - config = {}; - for(var i = 0; i < configParts.length; i++){ - var nameValue = configParts[i].split("="); - config[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - return {command: command, message: encodedMessage, config: config}; - } -} - -//Replace the normal XHR factory with the proxy one. -dojox.io.proxy.xip._xhrObjOld = dojo._xhrObj; -dojo._xhrObj = dojox.io.proxy.xip.createFacade; - -/** - Using this a reference: http://www.w3.org/TR/XMLHttpRequest/ - - Does not implement the onreadystate callback since dojo.xhr* does - not use it. -*/ -dojox.io.proxy.xip.XhrIframeFacade = function(ifpServerUrl){ - //summary: XMLHttpRequest facade object used by dojox.io.proxy.xip. - - //description: Do not use this object directly. See the Dojo Book page - //on XMLHttpRequest IFrame Proxying: - //http://dojotoolkit.org/book/dojo-book-0-4/part-5-connecting-pieces/i-o/cross-domain-xmlhttprequest-using-iframe-proxy - this._requestHeaders = {}; - this._allResponseHeaders = null; - this._responseHeaders = {}; - this._method = null; - this._uri = null; - this._bodyData = null; - this.responseText = null; - this.responseXML = null; - this.status = null; - this.statusText = null; - this.readyState = 0; - - this._ifpServerUrl = ifpServerUrl; - this._stateId = null; -} - -dojo.extend(dojox.io.proxy.xip.XhrIframeFacade, { - //The open method does not properly reset since Dojo does not reuse XHR objects. - open: function(/*String*/method, /*String*/uri){ - this._method = method; - this._uri = uri; - - this.readyState = 1; - }, - - setRequestHeader: function(/*String*/header, /*String*/value){ - this._requestHeaders[header] = value; - }, - - send: function(/*String*/stringData){ - this._bodyData = stringData; - - this._stateId = dojox.io.proxy.xip.send(this); - - this.readyState = 2; - }, - abort: function(){ - dojox.io.proxy.xip.destroyState(this._stateId); - }, - - getAllResponseHeaders: function(){ - return this._allResponseHeaders; //String - }, - - getResponseHeader: function(/*String*/header){ - return this._responseHeaders[header]; //String - }, - - _setResponseHeaders: function(/*String*/allHeaders){ - if(allHeaders){ - this._allResponseHeaders = allHeaders; - - //Make sure ther are now CR characters in the headers. - allHeaders = allHeaders.replace(/\r/g, ""); - var nvPairs = allHeaders.split("\n"); - for(var i = 0; i < nvPairs.length; i++){ - if(nvPairs[i]){ - var nameValue = nvPairs[i].split(": "); - this._responseHeaders[nameValue[0]] = nameValue[1]; - } - } - } - } -}); - -} diff --git a/includes/js/dojox/io/proxy/xip_client.html b/includes/js/dojox/io/proxy/xip_client.html deleted file mode 100644 index c51a839..0000000 --- a/includes/js/dojox/io/proxy/xip_client.html +++ /dev/null @@ -1,102 +0,0 @@ -<!-- - /* - Copyright (c) 2004-2008, The Dojo Foundation - All Rights Reserved. - - Licensed under the Academic Free License version 2.1 or above OR the - modified BSD license. For more information on Dojo licensing, see: - - http://dojotoolkit.org/community/licensing.shtml - */ ---> -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" - "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> - -<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> -<head> - <title></title> - <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta> - <!-- Security protection: uncomment the start and end script tags to enable. --> - <!-- script type="text/javascript" --> - // <!-- - - function pollHash(){ - //Can't use location.hash because at least Firefox does a decodeURIComponent on it. - var urlParts = window.location.href.split("#"); - if(urlParts.length == 2){ - var newHash = urlParts[1]; - if(newHash != xipCurrentHash){ - try{ - callMaster(xipStateId, newHash); - }catch(e){ - //Make sure to not keep processing the error hash value. - xipCurrentHash = newHash; - throw e; - } - xipCurrentHash = newHash; - } - } - } - - function unpackMessage(encodedMessage){ - var parts = encodedMessage.split(":"); - var command = parts[1]; - encodedMessage = parts[2] || ""; - - var config = null; - if(command == "init"){ - var configParts = encodedMessage.split("&"); - config = {}; - for(var i = 0; i < configParts.length; i++){ - var nameValue = configParts[i].split("="); - config[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - return {command: command, message: encodedMessage, config: config}; - } - - //************** Init ************************** - xipCurrentHash = ""; - - //Decode the init params - var fragId = window.location.href.split("#")[1]; - var config = unpackMessage(fragId).config; - - xipStateId = config.id; - xipMasterFrame = parent.parent; - - //Set up an HTML5 messaging publisher if postMessage exists. - //As of this writing, this is only useful to get Opera 9.25+ to work. - if(typeof document.postMessage != "undefined"){ - callMaster = function(stateId, message){ - xipMasterFrame.document.postMessage(stateId + "#" + message); - } - }else{ - var parts = config.callback.split("."); - xipCallbackObject = xipMasterFrame; - for(var i = 0; i < parts.length - 1; i++){ - xipCallbackObject = xipCallbackObject[parts[i]]; - } - xipCallback = parts[parts.length - 1]; - - callMaster = function(stateId, message){ - xipCallbackObject[xipCallback](stateId + "#" + message); - } - } - - //Call the master frame to let it know it is OK to start sending. - callMaster(xipStateId, "0:loaded"); - - //Start counter to inspect hash value. - setInterval(pollHash, 10); - - // --> - <!-- </script> --> -</head> -<body> - <h4>The Dojo Toolkit -- xip_client.html</h4> - - <p>This file is used for Dojo's XMLHttpRequest Iframe Proxy. This is the "client" file used - internally by dojox.io.proxy.xip.</p> -</body> -</html> diff --git a/includes/js/dojox/io/proxy/xip_server.html b/includes/js/dojox/io/proxy/xip_server.html deleted file mode 100644 index 01b7274..0000000 --- a/includes/js/dojox/io/proxy/xip_server.html +++ /dev/null @@ -1,382 +0,0 @@ -<!-- - /* - Copyright (c) 2004-2008, The Dojo Foundation - All Rights Reserved. - - Licensed under the Academic Free License version 2.1 or above OR the - modified BSD license. For more information on Dojo licensing, see: - - http://dojotoolkit.org/community/licensing.shtml - */ - Pieces taken from Dojo source to make this file stand-alone ---> -<html> -<head> - <title></title> - <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta> - <script type="text/javascript" src="isAllowed.js"></script> - <!-- - BY DEFAULT THIS FILE DOES NOT WORK SO THAT YOU DON'T ACCIDENTALLY EXPOSE - ALL OF YOUR XHR-ENABLED SERVICES ON YOUR SITE. - - In order for this file to work, you need to uncomment the start and end script tags, - and you should define a function with the following signature: - - function isAllowedRequest(request){ - return false; - } - - Return true out of the function if you want to allow the cross-domain request. - - DON'T DEFINE THIS FUNCTION IN THIS FILE! Define it in a separate file called isAllowed.js - and include it in this page with a script tag that has a src attribute pointing to the file. - See the very first script tag in this file for an example. You do not have to place the - script file in the same directory as this file, just update the path above if you move it - somewhere else. - - Customize the isAllowedRequest function to restrict what types of requests are allowed - for this server. The request object has the following properties: - - requestHeaders: an object with the request headers that are to be added to - the XHR request. - - method: the HTTP method (GET, POST, etc...) - - uri: The URI for the request. - - data: The URL-encoded data for the request. For a GET request, this would - be the querystring parameters. For a POST request, it wll be the - body data. - - See xip_client.html for more info on the xip fragment identifier protocol. - --> - - <!-- Security protection: uncomment the script tag to enable. --> - <!-- script type="text/javascript" --> - // <!-- - //Core XHR handling taken from Dojo IO code. - dojo = {}; - dojo.hostenv = {}; - // These are in order of decreasing likelihood; this will change in time. - dojo.hostenv._XMLHTTP_PROGIDS = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0']; - - dojo.hostenv.getXmlhttpObject = function(){ - var http = null; - var last_e = null; - try{ http = new XMLHttpRequest(); }catch(e){} - if(!http){ - for(var i=0; i<3; ++i){ - var progid = dojo.hostenv._XMLHTTP_PROGIDS[i]; - try{ - http = new ActiveXObject(progid); - }catch(e){ - last_e = e; - } - - if(http){ - dojo.hostenv._XMLHTTP_PROGIDS = [progid]; // so faster next time - break; - } - } - - /*if(http && !http.toString) { - http.toString = function() { "[object XMLHttpRequest]"; } - }*/ - } - - if(!http){ - throw "xip_server.html: XMLHTTP not available: " + last_e; - } - - return http; - } - - dojo.setHeaders = function(http, headers){ - if(headers) { - for(var header in headers) { - var headerValue = headers[header]; - http.setRequestHeader(header, headerValue); - } - } - } - - //MSIE has the lowest limit for URLs with fragment identifiers, - //at around 4K. Choosing a slightly smaller number for good measure. - xipUrlLimit = 4000; - xipIdCounter = 1; - - function xipServerInit(){ - xipStateId = ""; - xipCurrentHash = ""; - xipRequestMessage = ""; - xipResponseParts = []; - xipPartIndex = 0; - } - - function pollHash(){ - //Can't use location.hash because at least Firefox does a decodeURIComponent on it. - var urlParts = window.location.href.split("#"); - if(urlParts.length == 2){ - var newHash = urlParts[1]; - if(newHash != xipCurrentHash){ - try{ - messageReceived(newHash); - }catch(e){ - //Make sure to not keep processing the error hash value. - xipCurrentHash = newHash; - throw e; - } - xipCurrentHash = newHash; - } - } - } - - function messageReceived(encodedData){ - var msg = unpackMessage(encodedData); - - switch(msg.command){ - case "ok": - sendResponsePart(); - break; - case "start": - xipRequestMessage = ""; - xipRequestMessage += msg.message; - setClientUrl("ok"); - break; - case "part": - xipRequestMessage += msg.message; - setClientUrl("ok"); - break; - case "end": - setClientUrl("ok"); - xipRequestMessage += msg.message; - sendXhr(); - break; - } - } - - function sendResponse(encodedData){ - //Break the message into parts, if necessary. - xipResponseParts = []; - var resData = encodedData; - var urlLength = xipClientUrl.length; - var partLength = xipUrlLimit - urlLength; - var resIndex = 0; - - while((resData.length - resIndex) + urlLength > xipUrlLimit){ - var part = resData.substring(resIndex, resIndex + partLength); - //Safari will do some extra hex escaping unless we keep the original hex - //escaping complete. - var percentIndex = part.lastIndexOf("%"); - if(percentIndex == part.length - 1 || percentIndex == part.length - 2){ - part = part.substring(0, percentIndex); - } - xipResponseParts.push(part); - resIndex += part.length; - } - xipResponseParts.push(resData.substring(resIndex, resData.length)); - - xipPartIndex = 0; - sendResponsePart(); - } - - function sendResponsePart(){ - if(xipPartIndex < xipResponseParts.length){ - //Get the message part. - var partData = xipResponseParts[xipPartIndex]; - - //Get the command. - var cmd = "part"; - if(xipPartIndex + 1 == xipResponseParts.length){ - cmd = "end"; - }else if (xipPartIndex == 0){ - cmd = "start"; - } - - setClientUrl(cmd, partData); - xipPartIndex++; - }else{ - xipServerInit(); - } - } - - function setClientUrl(cmd, message){ - var clientUrl = makeClientUrl(cmd, message); - //Safari won't let us replace across domains. - if(navigator.userAgent.indexOf("Safari") == -1){ - xipClientWindow.location.replace(clientUrl); - }else{ - xipClientWindow.location = clientUrl; - } - } - - function makeClientUrl(cmd, message){ - var clientUrl = xipClientUrl + "#" + (xipIdCounter++) + ":" + cmd; - if(message){ - clientUrl += ":" + message; - } - return clientUrl - } - - function xhrDone(xhr){ - /* Need to pull off and return the following data: - - responseHeaders - - status - - statusText - - responseText - */ - var response = {}; - - if(typeof(xhr.getAllResponseHeaders) != "undefined"){ - var allHeaders = xhr.getAllResponseHeaders(); - if(allHeaders){ - response.responseHeaders = allHeaders; - } - } - - if(xhr.status == 0 || xhr.status){ - response.status = xhr.status; - } - - if(xhr.statusText){ - response.statusText = xhr.statusText; - } - - if(xhr.responseText){ - response.responseText = xhr.responseText; - } - - //Build a string of the response object. - var result = ""; - var isFirst = true; - for (var param in response){ - if(isFirst){ - isFirst = false; - }else{ - result += "&"; - } - result += param + "=" + encodeURIComponent(response[param]); - } - sendResponse(result); - } - - function sendXhr(){ - var request = {}; - var nvPairs = xipRequestMessage.split("&"); - var i = 0; - var nameValue = null; - for(i = 0; i < nvPairs.length; i++){ - if(nvPairs[i]){ - var nameValue = nvPairs[i].split("="); - request[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - - //Split up the request headers, if any. - var headers = {}; - if(request.requestHeaders){ - nvPairs = request.requestHeaders.split("\r\n"); - for(i = 0; i < nvPairs.length; i++){ - if(nvPairs[i]){ - nameValue = nvPairs[i].split(": "); - headers[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - - request.requestHeaders = headers; - } - - if(isAllowedRequest(request)){ - - //The request is allowed, so set up the XHR object. - var xhr = dojo.hostenv.getXmlhttpObject(); - - //Start timer to look for readyState. - var xhrIntervalId = setInterval(function(){ - - if(xhr.readyState == 4){ - clearInterval(xhrIntervalId); - xhrDone(xhr); - } - }, 10); - - //Actually start up the XHR request. - xhr.open(request.method, request.uri, true); - dojo.setHeaders(xhr, request.requestHeaders); - - var content = ""; - if(request.data){ - content = request.data; - } - - try{ - xhr.send(content); - }catch(e){ - if(typeof xhr.abort == "function"){ - xhr.abort(); - xhrDone({status: 404, statusText: "xip_server.html error: " + e}); - } - } - } - } - - function unpackMessage(encodedMessage){ - var parts = encodedMessage.split(":"); - var command = parts[1]; - encodedMessage = parts[2] || ""; - - var config = null; - if(command == "init"){ - var configParts = encodedMessage.split("&"); - config = {}; - for(var i = 0; i < configParts.length; i++){ - var nameValue = configParts[i].split("="); - config[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]); - } - } - return {command: command, message: encodedMessage, config: config}; - } - - function onServerLoad(){ - xipServerInit(); - - //Decode the init params - var config = unpackMessage(window.location.href.split("#")[1]).config; - - xipStateId = config.id; - xipClientUrl = config.client; - - //Make sure we don't have a javascript: url, just for good measure. - if(xipClientUrl.split(":")[0].match(/javascript/i)){ - throw "Invalid client URL"; - } - if(!xipStateId.match(/^XhrIframeProxy[0-9]+$/)){ - throw "Invalid state ID"; - } - - setInterval(pollHash, 10); - - var serverUrl = window.location.href.split("#")[0]; - document.getElementById("iframeHolder").innerHTML = '<iframe name="' - + xipStateId + '_clientEndPoint' - + '" src="javascript:false">' - + '</iframe>'; - xipClientWindow = document.getElementsByTagName("iframe")[0]; - xipClientWindow.src = makeClientUrl("init", 'id=' + xipStateId + "&callback=" + encodeURIComponent(config.callback)); - if(xipClientWindow.contentWindow){ - xipClientWindow = xipClientWindow.contentWindow; - } - } - - if(typeof(window.addEventListener) == "undefined"){ - window.attachEvent("onload", onServerLoad); - }else{ - window.addEventListener('load', onServerLoad, false); - } - // --> - <!-- </script> --> -</head> -<body> - <h4>The Dojo Toolkit -- xip_server.html</h4> - - <p>This file is used for Dojo's XMLHttpRequest Iframe Proxy. This is the the file - that should go on the server that will actually be doing the XHR request.</p> - <div id="iframeHolder"></div> -</body> -</html> |