MediaWiki Drag&Drop to upload

mediawiki_dndupload.user.js

// ==UserScript==
// @name           mediawiki_dndupload.user.js
// @description    
// @include        http://*
// ==/UserScript==

if ( !Object.keys ) {
    Object.keys = function (o) {
        var keys = [];
        for (var i in o) {
            keys.push(i);
        }
        return keys;
    }
}

var $A = function (arraylike) {
   return Array.prototype.slice.apply(arraylike);
};


document.addEventListener("dragover", function (ev) {
	ev.stopPropagation();
	ev.preventDefault();
}, true);


document.addEventListener("drop", function (ev) {
    var m = document.documentElement.innerHTML.match(/^var wgUserName = "(.+?)"/m);

	if (!m) {
		alert("login please")
		return;
	}


	var dt = ev.dataTransfer;

	ev.stopPropagation();
	ev.preventDefault();

	var files = dt.files;
	window.files = files;
	file = window.files[0];
	
	var msg;
	if (files.length == 1) {
		msg = "Are you sure to upload " + file.fileName;
	} else {
		msg = "Are you sure to upload " + files.length + " files";
	}
	if ( window.confirm(msg) ) {
		for ( var i = 0; i < files.length; i++ ) {
			var file = files[i];
			upload(file)
		}
	}
}, true);

function upload(file) {
	var boundary = "---------------------------168072824752491622650073";

	var r = new XMLHttpRequest();
	r.open("POST", "http://localhost/index.php/%E7%89%B9%E5%88%A5:Upload", false);
	r.overrideMimeType('multipart/form-data; boundary=---------------------------168072824752491622650073');
	r.setRequestHeader('Content-Type', 'multipart/form-data; boundary=---------------------------168072824752491622650073');
var d = new Date(); 
d.toUTCString(); 
var p = d.toDateString().split(/ /); 
var m2d = { 
Jan:'01', 
Feb:'02', 
Mar:'03', 
Apr:'04', 
May:'05', 
Jun:'06', 
Jul:'07', 
Aug:'08', 
Sep:'09', 
Oct:'10', 
Nov:'11', 
Dec:'12' 
} 

    var m = document.documentElement.innerHTML.match(/^var wgUserName = "(.+?)"/m);
    var user = m[1];
    var date = p[3] + m2d[p[1]] + p[2];
    
    var safename = encodeURIComponent(file.fileName).replace(/(%[0-9a-f]{2})/ig, '');
    if (safename.match(/^\./)) {
      safename = Date.now() + safename;
    }
    var filename = [user, date, safename].join(".");

	var d = {
	 "wpSourceType": "file",
	 "wpDestFile" : filename,
   	 "wpUploadDescription" : "",
	 "wpUpload" : "upload",
	 wpUploadFile: file
	}

	var parts = Object.keys(d).map(function (k) {

	  if ( 'object' == typeof(d[k]) ) {
		return [
		 'Content-Disposition: form-data; name="'+ k + '"; filename="' + (filename) + '"',
		  'Content-Type: ' + file.type,
			'',
		   file.getAsBinary()
		].join("\r\n")

	} else {
	  return [
		 'Content-Disposition: form-data; name="'+ k + '"; charset="utf-8"',
		'',
		d[k]
		].join("\r\n")
	 }
	} ) 

	var content = '--' + boundary + '\r\n' + 
	parts.join('\r\n--' + boundary + '\r\n') +
	'\r\n--' + boundary + '--'; 
	r.sendAsBinary(content);

	//console.log(r);
	window.r = r;
	
	var m1 = r.responseText.match(/^var wgServer = "(.+?)"/m);
	var m2 = r.responseText.match(/^var wgPageName = "(.+?)"/m);
	var m3 = r.responseText.match(/^var wgArticlePath = "(.+?)"/m);

  window.m = [m1,m2,m3];
  //console.log(m1,m2,m3);
	if (m1 && m2 && m3) {
       var u = m1[1] + m3[1].replace(/\$1/, encodeURIComponent(m2[1]));
      window.open(u)
	}
	
}