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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is gContactSync.
*
* The Initial Developer of the Original Code is
* Josh Geenen <gcontactsync@pirules.net>.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* HttpRequest
* Sets up an HTTP request.
* @constructor
* @class
*/
function HttpRequest() {
if (window.XMLHttpRequest)
this.mHttpRequest = new XMLHttpRequest();
if (!this.mHttpRequest)
throw "Error - could not create an XMLHttpRequest" +
StringBundle.getStr("pleaseReport");
}
HttpRequest.prototype = {
// content types
CONTENT_TYPES: {
URL_ENC: "application/x-www-form-urlencoded",
ATOM: "application/atom+xml",
XML: "application/xml"
},
/**
* HttpRequest.addContentOverride
* Adds a content override to the header in case a firewall blocks DELETE or
* PUT requests.
* @param aType The type of override. Must be DELETE or PUT.
*/
addContentOverride: function HttpRequest_addContentOverride(aType) {
switch (aType) {
case "delete":
case "DELETE":
this.addHeaderItem("X-HTTP-Method-Override", "DELETE");
break;
case "put":
case "PUT":
this.addHeaderItem("X-HTTP-Method-Override", "PUT");
break;
default:
throw "Error - type sent to addContentOverride must be DELETE or PUT";
}
},
/**
* HttpRequest.addHeaderItem
* Adds a header label/value pair to the arrays of header information
* @param aLabel The label for the header
* @param aValue The value for the header
*/
addHeaderItem: function HttpRequest_addHeaderItem(aLabel, aValue) {
if (!this.mHeaderLabels) {
this.mHeaderLabels = [];
this.mHeaderValues = [];
}
this.mHeaderLabels.push(aLabel);
this.mHeaderValues.push(aValue);
},
/**
* HttpRequest.send
* Sends the HTTP Request with the information stored in the object.
* Note: Setup everything, including the callbacks for different statuses
* including mOnSuccess, mOnError, mOnFail, and mOnCreated first.
*/
send: function HttpRequest_send() {
// log the basic info for debugging purposes
LOGGER.VERBOSE_LOG("HTTP Request being formed");
LOGGER.VERBOSE_LOG(" * Caller is: " + this.send.caller.name);
LOGGER.VERBOSE_LOG(" * URL: " + this.mUrl);
LOGGER.VERBOSE_LOG(" * Type: " + this.mType);
LOGGER.VERBOSE_LOG(" * Content-Type: " + this.mContentType);
this.mHttpRequest.open(this.mType, this.mUrl, true); // open the request
// set the header
this.addHeaderItem("Content-Type", this.mContentType);
LOGGER.VERBOSE_LOG(" * Setting up the header: ");
for (var i = 0; i < this.mHeaderLabels.length; i++) {
LOGGER.VERBOSE_LOG(" o " + this.mHeaderLabels[i] + " " + this.mHeaderValues[i]);
this.mHttpRequest.setRequestHeader(this.mHeaderLabels[i],
this.mHeaderValues[i]);
}
this.mHttpRequest.send(this.mBody); // send the request
LOGGER.VERBOSE_LOG(" * Request Sent");
var httpReq = this.mHttpRequest;
var onSuccess = this.mOnSuccess ? this.mOnSuccess: [];
var onOffline = this.mOnOffline ? this.mOnOffline: [];
var onFail = this.mOnError ? this.mOnError: [];
var onCreated = this.mOnCreated ? this.mOnCreated: [];
var on401 = this.mOn401 ? this.mOn401: [];
httpReq.onreadystatechange = function httpReq_readyState() {
var commands = [];
// if the request is done then check the status
if (httpReq.readyState == 4) {
// this may be called after the address book window is closed
// if the window is closed there will be an exception thrown as
// explained here - https://www.mozdev.org/bugs/show_bug.cgi?id=20527
try {
LOGGER.VERBOSE_LOG(" * The request has finished with status: " +
httpReq.status + "/" + httpReq.statusText);
LOGGER.VERBOSE_LOG(" * Headers:\n" + httpReq.getAllResponseHeaders() + "\n");
//if (confirm("Fake 401?")) {
// alert('Faking a 401');
// return handle401(httpReq);
//}
switch (httpReq.status) {
case 0: // the user is offline
commands = onOffline;
break;
case 201: // 201 CREATED
commands = onCreated;
break;
case 200: // 200 OK
commands = onSuccess;
break;
case 401: // 401 Unauthorized (Token Expired in Gmail)
commands = on401;
break;
default: // other status
commands = onFail;
}
LOGGER.VERBOSE_LOG(" * Evaluating commands");
for (var i in commands) {
LOGGER.VERBOSE_LOG(" o " + commands[i]);
try {
eval(commands[i]);
}
catch (e) {
LOGGER.LOG_WARNING("Couldn't evaluate command", e);
}
}
}
catch (e) {}
} // end of readyState
}
}
};
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