lib/ripple/xhr/cors.js

/*
 *  Copyright 2011 Research In Motion Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var config = require('ripple/config'),
    fileSystem = require('ripple/fileSystem'),
    helpers = require('ripple/xhr/helpers'),
    _console = require('ripple/console'),
    XHR = require('ripple/xhr/base');

function _XMLHttpRequest() {
    var xhr = new XHR(),
        origMethods = {
            setRequestHeader: xhr.setRequestHeader,
            open: xhr.open
        };

    xhr.setRequestHeader = function (header, value) {
        // This is done to get around jQuery 1.3.2 setting a header that it shouldn't
        if (header && header.toUpperCase() !== "X-REQUESTED-WITH") {
            origMethods.setRequestHeader.apply(xhr, Array.prototype.slice.call(arguments));
        }
    };

    xhr.open = function (method, url, async, user, password) {
        var scrubbedUrl = fileSystem.getURI(url);

        if (!helpers.isLocalRequest(url)) {
            url = config.getAPIURL() +
                "/xhr_proxy?tinyhippos_apikey=ABC&tinyhippos_rurl=" + escape(scrubbedUrl);
        }

        origMethods.open.apply(xhr, Array.prototype.slice.call(arguments));
    };

    return xhr;
}

module.exports = _XMLHttpRequest;