forked from extern/egroupware
307 lines
12 KiB
JavaScript
307 lines
12 KiB
JavaScript
|
/*
|
||
|
|
Copyright (c) 2003 Jan-Klaas Kollhof
|
||
|
|
|
||
|
|
This file is part of the JavaScript o lait library(jsolait).
|
||
|
|
|
||
|
|
jsolait is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This software is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
|
along with this software; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
Provides methods for making HTTP requests.
|
||
|
|
*/
|
||
|
|
Module("urllib","1.1.2", function(mod){
|
||
|
|
/**
|
||
|
|
Thrown if no request object could be instanciated.
|
||
|
|
*/
|
||
|
|
mod.NoHTTPRequestObject=Class("NoHTTPRequestObject", mod.Exception, function(publ, supr){
|
||
|
|
/**
|
||
|
|
Initializes the Exception.
|
||
|
|
@param trace The error causing this exception.
|
||
|
|
*/
|
||
|
|
publ.init=function(trace){
|
||
|
|
supr(this).init( "Could not create an HTTP request object", trace);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
/**
|
||
|
|
Thrown if an HTTP request could not be opened.
|
||
|
|
*/
|
||
|
|
mod.RequestOpenFailed = Class("RequestOpenFailed", mod.Exception, function(publ, supr){
|
||
|
|
/**
|
||
|
|
Initializes the Exception.
|
||
|
|
@param trace The error causing this exception.
|
||
|
|
*/
|
||
|
|
publ.init=function(trace){
|
||
|
|
supr(this).init( "Opening of HTTP request failed.", trace);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
/**
|
||
|
|
Thrown is arequest could not be sent to the server.
|
||
|
|
*/
|
||
|
|
mod.SendFailed=Class("SendFailed", mod.Exception, function(publ, supr){
|
||
|
|
/**
|
||
|
|
Initializes the Exception.
|
||
|
|
@param trace The error causing this exception.
|
||
|
|
*/
|
||
|
|
publ.init = function(trace){
|
||
|
|
supr(this).init( "Sending of HTTP request failed.", trace);
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
/**
|
||
|
|
Mimics the HTTPRequest object using Adobe's SVG Viewer's postURL and getURL.
|
||
|
|
It can only process asyncronous connection and the only header that's supported is 'Content-Type'.
|
||
|
|
*/
|
||
|
|
var ASVRequest=Class("ASVRequest", function(publ){
|
||
|
|
/**
|
||
|
|
Initializes the ASVRequest.
|
||
|
|
*/
|
||
|
|
publ.init = function(){
|
||
|
|
if((getURL==null) || (postURL==null)){
|
||
|
|
throw "getURL and postURL are not available!";
|
||
|
|
}else{
|
||
|
|
this.readyState=0;
|
||
|
|
this.responseText="";
|
||
|
|
this.__contType ="";
|
||
|
|
this.status=200;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Mimics the open method without actually opening a connection.
|
||
|
|
@param type "GET" or "POST".
|
||
|
|
@param url The url to open.
|
||
|
|
@param async=true True for async. connection. Otherwhise an exception is thrown.
|
||
|
|
*/
|
||
|
|
publ.open=function(type,url,async){
|
||
|
|
if (async == false){
|
||
|
|
throw "Can only open asynchronous connections!";
|
||
|
|
}
|
||
|
|
this.__type = type;
|
||
|
|
this.__url = url;
|
||
|
|
this.readyState=0;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Sets a header.
|
||
|
|
@param name The header name. All but "Content-Type" are ignored.
|
||
|
|
@param value The value of the header.
|
||
|
|
*/
|
||
|
|
publ.setRequestHeader=function(name, value){
|
||
|
|
if (name=="Content-Type"){
|
||
|
|
this.__contType =value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Sends the request.
|
||
|
|
@param data The data to send when doing a post.
|
||
|
|
*/
|
||
|
|
publ.send=function(data){
|
||
|
|
var self=this;
|
||
|
|
var cbh=new Object();
|
||
|
|
cbh.operationComplete = function(rsp){
|
||
|
|
self.readyState=4;
|
||
|
|
self.responseText=rsp.content;
|
||
|
|
if(this.ignoreComplete == false){
|
||
|
|
if(self.onreadystatechange){
|
||
|
|
self.onreadystatechange();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
cbh.ignoreComplete = false;
|
||
|
|
try{
|
||
|
|
if(this.__type =="GET"){
|
||
|
|
getURL(this.__url,cbh);
|
||
|
|
}else if (this.__type == "POST"){
|
||
|
|
postURL(this.__url, data, cbh, this.__contType);
|
||
|
|
}
|
||
|
|
}catch(e){
|
||
|
|
cbh.ignoreComplete=true;
|
||
|
|
throw e;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
/**
|
||
|
|
Creates an HTTP request object for retreiving files.
|
||
|
|
@return HTTP request object.
|
||
|
|
*/
|
||
|
|
var getHTTP=function() {
|
||
|
|
var obj;
|
||
|
|
try{ //to get the mozilla httprequest object
|
||
|
|
obj = new XMLHttpRequest();
|
||
|
|
}catch(e){
|
||
|
|
try{ //to get MS HTTP request object
|
||
|
|
obj=new ActiveXObject("Msxml2.XMLHTTP.4.0");
|
||
|
|
}catch(e){
|
||
|
|
try{ //to get MS HTTP request object
|
||
|
|
obj=new ActiveXObject("Msxml2.XMLHTTP")
|
||
|
|
}catch(e){
|
||
|
|
try{// to get the old MS HTTP request object
|
||
|
|
obj = new ActiveXObject("microsoft.XMLHTTP");
|
||
|
|
}catch(e){
|
||
|
|
try{//to create the ASV request object.
|
||
|
|
obj = new ASVRequest();
|
||
|
|
}catch(e){
|
||
|
|
throw new mod.NoHTTPRequestObject("Neither Mozilla, IE nor ASV found. Can't do HTTP request without them.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Sends a request to a server.
|
||
|
|
To explain the way the optional arguments work I will give examples:
|
||
|
|
simple:
|
||
|
|
sendRequest("get", "url")
|
||
|
|
sendRequest("post", "url", "data")
|
||
|
|
|
||
|
|
with headers:
|
||
|
|
sendRequest("get", "url", [["headername","value"]])
|
||
|
|
sendRequest("post", "url", "data", [["headername","value"]])
|
||
|
|
|
||
|
|
with user information:
|
||
|
|
sendRequest("get", "url", "user", "pass")
|
||
|
|
sendRequest("post", "url", "user", "pass", "data")
|
||
|
|
|
||
|
|
with headers and user information:
|
||
|
|
sendRequest("get", "url", "user", "pass", [["headername","value"]])
|
||
|
|
sendRequest("post", "url", "user", "pass", "data", [["headername","value"]])
|
||
|
|
|
||
|
|
To make the request asynchronous just add a callback function as the last argument to the calls above.
|
||
|
|
|
||
|
|
@param type Type of connection (GET, POST, ...).
|
||
|
|
@param url The URL to retrieve.
|
||
|
|
@param user=null The username for auth.
|
||
|
|
@param pass=null The password. (must be set if user is set!)
|
||
|
|
@param data="" The data to send with the request.
|
||
|
|
@param headers=[] Array of headers. Each element in the array should be another array containing [headername,value].
|
||
|
|
@param callback=null Callback for asynchronous connections. The callback is called after completion and is passed the request object as 1st Parameter.
|
||
|
|
@return HTTP request object.
|
||
|
|
*/
|
||
|
|
mod.sendRequest=function(type, url, user, pass, data, headers, callback){
|
||
|
|
var async=false;
|
||
|
|
//check if the last argument is a function and treat it as callback;
|
||
|
|
if(arguments[arguments.length-1] instanceof Function){
|
||
|
|
var async=true;
|
||
|
|
callback = arguments[arguments.length-1];
|
||
|
|
}
|
||
|
|
//treat sencond last(if callback)/last(if no callback) argument as headers
|
||
|
|
var headindex=arguments.length-((async || arguments[arguments.length-1] == null) ?2:1);
|
||
|
|
//is it an array then it's headers
|
||
|
|
if(arguments[headindex] instanceof Array){
|
||
|
|
headers=arguments[headindex];
|
||
|
|
}else{
|
||
|
|
headers=[];
|
||
|
|
}
|
||
|
|
//are user AND password not specified then assume data as 3rd argument.
|
||
|
|
if(typeof user == "string" && typeof pass == "string"){
|
||
|
|
if(typeof data != "string"){
|
||
|
|
data="";
|
||
|
|
}
|
||
|
|
}else if (typeof user == "string"){
|
||
|
|
data = user;
|
||
|
|
user=null;
|
||
|
|
pass=null;
|
||
|
|
}else{
|
||
|
|
user=null;
|
||
|
|
pass=null;
|
||
|
|
}
|
||
|
|
var xmlhttp= getHTTP();
|
||
|
|
try{
|
||
|
|
if(user!=null){
|
||
|
|
xmlhttp.open(type, url, async, user, pass);
|
||
|
|
}else{
|
||
|
|
xmlhttp.open(type, url, async);
|
||
|
|
}
|
||
|
|
}catch(e){
|
||
|
|
throw new mod.RequestOpenFailed(e);
|
||
|
|
}
|
||
|
|
//set headers
|
||
|
|
for(var i=0;i< headers.length;i++){
|
||
|
|
xmlhttp.setRequestHeader(headers[i][0], headers[i][1]);
|
||
|
|
}
|
||
|
|
|
||
|
|
if(async){//set up a callback
|
||
|
|
xmlhttp.onreadystatechange=function(){
|
||
|
|
if (xmlhttp.readyState==4) {
|
||
|
|
callback(xmlhttp);
|
||
|
|
xmlhttp = null; //help IE with arbage collection
|
||
|
|
}else if (xmlhttp.readyState==2){
|
||
|
|
//status property should be available (MS IXMLHTTPRequest documentation)
|
||
|
|
//in Mozilla it is not if the request failed(server not reachable)
|
||
|
|
//in IE it is not available at all ?!
|
||
|
|
try{//see if it is mozilla otherwise don't care.
|
||
|
|
var isNetscape = netscape;
|
||
|
|
try{//if status is not available the request failed.
|
||
|
|
var s=xmlhttp.status;
|
||
|
|
}catch(e){//call the callback because Mozilla will not get to readystate 4
|
||
|
|
callback(xmlhttp);
|
||
|
|
xmlhttp = null;
|
||
|
|
}
|
||
|
|
}catch(e){
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
try{
|
||
|
|
xmlhttp.send(data);
|
||
|
|
}catch(e){
|
||
|
|
throw new mod.SendFailed(e);
|
||
|
|
}
|
||
|
|
return xmlhttp;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Shorthand for a GET request.
|
||
|
|
It calls sendRequest with "GET" as first argument.
|
||
|
|
See the sendRequest method for more information.
|
||
|
|
@param url The URL to retrieve.
|
||
|
|
@param user=null The username for auth.
|
||
|
|
@param pass=null The password. (must be set if user is set!)
|
||
|
|
@param headers=[] Array of headers. Each element in the array should be another array containing [headername,value].
|
||
|
|
@param callback=null Callback for asynchronous connections. The callback is called after completion and is passed the request object as 1st Parameter.
|
||
|
|
@return HTTP request object.
|
||
|
|
*/
|
||
|
|
mod.getURL=function(url, user, pass, headers, callback) {
|
||
|
|
var a= new Array("GET");
|
||
|
|
for(var i=0;i<arguments.length;i++){
|
||
|
|
a.push(arguments[i]);
|
||
|
|
}
|
||
|
|
return mod.sendRequest.apply(this,a)
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Shorthand for a POST request.
|
||
|
|
It calls sendRequest with "POST" as first argument.
|
||
|
|
See the sendRequest method for more information.
|
||
|
|
@param url The URL to retrieve.
|
||
|
|
@param user=null The username for auth.
|
||
|
|
@param pass=null The password. (must be set if user is set!)
|
||
|
|
@param data="" The data to send with the request.
|
||
|
|
@param headers=[] Array of headers. Each element in the array should be another array containing [headername,value].
|
||
|
|
@param callback=null Callback for asynchronous connections. The callback is called after completion and is passed the request object as 1st Parameter.
|
||
|
|
@return HTTP request object.
|
||
|
|
*/
|
||
|
|
mod.postURL=function(url, user, pass, data, headers, callback) {
|
||
|
|
var a= new Array("POST");
|
||
|
|
for(var i=0;i<arguments.length;i++){
|
||
|
|
a.push(arguments[i]);
|
||
|
|
}
|
||
|
|
return mod.sendRequest.apply(this,a)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|