// vim:set sw=4 ts=4 sts=4 ft=javascript expandtab:
/*
* Return the deciphering key stored in anchor part of the URL
* Stolen from https://github.com/sebsauvage/ZeroBin/blob/master/js/zerobin.js
*/
function pageKey() {
var key = window.location.hash.substring(1); // Get key
// Some stupid web 2.0 services and redirectors add data AFTER the anchor
// (such as &utm_source=...).
// We will strip any additional data.
// First, strip everything after the equal sign (=) which signals end of base64 string.
i = key.indexOf('='); if (i>-1) { key = key.substring(0,i+1); }
// If the equal sign was not present, some parameters may remain:
i = key.indexOf('&'); if (i>-1) { key = key.substring(0,i); }
// Then add trailing equal sign if it's missing
if (key.charAt(key.length-1)!=='=') key+='=';
return key;
}
function base64ToArrayBuffer(base64) {
var binary_string = window.atob(base64);
var len = binary_string.length;
var bytes = new Uint8Array( len );
for (var i = 0; i < len; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return bytes.buffer;
}
// Something's wring
function addAlert(msg) {
$('#please-wait').remove();
var pbd = $('.file-progress');
pbd.attr('role', 'alert');
pbd.removeClass('progress');
pbd.html(['<div class="card pink">',
'<div class="card-content white-text">',
'<strong>', msg, '</strong>',
'</div>',
'</div>'].join(''));
}
// Spawn WebSocket
function spawnWebsocket(pa) {
var ws = new WebSocket(ws_url);
ws.onopen = function() {
console.log('Connection is established!');
var l = $('#loading');
l.html(i18n.loading.replace(/XX1/, (pa + 1)));
if ($('#file_pwd').length === 1) {
window.ws.send('{"part":'+pa+', "file_pwd": "'+$('#file_pwd').val()+'"}');
} else {
window.ws.send('{"part":'+pa+'}');
}
};
ws.onclose = function() {
console.log('Connection is closed');
if (!window.completed) {
console.log('Connection closed. Retrying to get slice '+pa);
window.ws = spawnWebsocket(pa);
}
}
ws.onmessage = function(e) {
var res = e.data.split('XXMOJOXX');
var json = res.shift();
var data = JSON.parse(json);
if (data.msg !== undefined) {
addAlert(data.msg);
console.log(data.msg);
if ($('#file_pwd').length === 1) {
$('.file-abort').addClass('hide');
}
window.onbeforeunload = null;
} else {
console.log('Getting slice '+(data.part + 1)+' of '+data.total);
var slice = JSON.parse(res.shift());
var percent = Math.round(100 * (data.part + 1)/data.total);
var pb = $('#pb');
pb.css('width', percent+'%');
pb.attr('aria-valuenow', percent);
$('#pbt').html(percent+'%');
try {
var b64 = sjcl.decrypt(window.key, slice);
window.a[data.part] = base64ToArrayBuffer(b64);
if (data.part + 1 === data.total) {
var blob = new Blob(a, {type: data.type});
$('#please-wait').remove();
$('#loading').remove();
var pbd = $('#pbd');
pbd.attr('class', 'center-align');
// IE & Edge fix for downloading blob files, gives option to save or open the file when the link is opened.
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
var fileName = escapeHtml(data.name);
window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
var blobURL = URL.createObjectURL(blob);
}
var innerHTML = ['<p><a href="', blobURL, '" class="btn btn-primary" download="', escapeHtml(data.name), '">', i18n.download, '</a></p>'];
if (data.type.match(/^image\//) !== null) {
innerHTML.push('<img id="render-image" class="responsive-img" alt="', escapeHtml(data.name), '" src="', blobURL, '">');
} else if (data.type.match(/^video\//) !== null) {
innerHTML.push('<video class="responsive-video" controls>',
'<source src="', blobURL, '" type="', data.type, '">',
'</video>');
} else if (data.type.match(/^audio\//) !== null) {
innerHTML.push('<audio class="responsive-video" controls>',
'<source src="', blobURL, '" type="', data.type, '">',
'</audio>');
}
pbd.html(innerHTML.join(''));
if ($('#file_pwd').length === 1) {
window.ws.send('{"ended":true, "file_pwd": "'+$('#file_pwd').val()+'"}');
} else {
window.ws.send('{"ended":true}');
}
window.onbeforeunload = null;
window.completed = true;
$('#abort').remove();
} else {
var l = $('#loading');
l.html(i18n.loading.replace(/XX1/, (data.part + 1)));
if (ws.readyState === 3) {
window.ws = spawnWebsocket(data.part + 1);
} else {
window.ws.onclose = function() {
console.log('Connection is closed');
if (!window.completed) {
console.log('Connection closed. Retrying to get slice '+(data.part + 1));
window.ws = spawnWebsocket(data.part + 1);
}
}
window.ws.onerror = function() {
console.log('Error. Retrying to get slice '+(data.part + 1));
window.ws = spawnWebsocket(data.part + 1);
};
if ($('#file_pwd').length === 1) {
window.ws.send('{"part":'+(data.part + 1)+', "file_pwd": "'+$('#file_pwd').val()+'"}');
} else {
window.ws.send('{"part":'+(data.part + 1)+'}');
}
}
}
} catch(err) {
if (err.message === 'ccm: tag doesn\'t match') {
addAlert(i18n.badkey);
} else {
addAlert(err.message);
}
window.onbeforeunload = null;
}
}
}
ws.onerror = function() {
console.log('Error. Retrying to get slice '+pa);
window.ws = spawnWebsocket(pa);
}
return ws;
}
// When it's ready
$(document).ready(function(){
$('#abort').click(function() {
window.ws.onclose = function() {};
window.ws.close();
$('#please-wait, #loading, #pbd, #abort').remove();
$('#filesize').parent().append('<h4>'+i18n.aborted1+'</h4><a onClick="window.location.reload();" class="waves-effect waves-light btn">'+i18n.aborted2+'</a></p>');
window.onbeforeunload = null;
});
$('#filesize').html(filesize($('#filesize').attr('data-filesize'), {base: 10}));
window.a = new Array();
window.key = pageKey();
window.completed = false;
if (key !== '=') {
var go = true;
if ($('#file_pwd').length === 1) {
go = false;
$('#go').click(function() {
$('.file-progress, .file-abort').removeClass('hide');
$('#file_pwd').parent().parent().addClass('hide');
// Set websocket
window.ws = spawnWebsocket(0);
// Prevent exiting page before full download
window.onbeforeunload = confirmExit;
});
}
if (go) {
// Set websocket
window.ws = spawnWebsocket(0);
// Prevent exiting page before full download
window.onbeforeunload = confirmExit;
}
} else {
addAlert(i18n.nokey);
}
});