PrivateBin/js/privatebin.js

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2012-04-22 18:45:45 +08:00
/**
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* PrivateBin
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*
* a zero-knowledge paste bin
*
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* @link https://github.com/PrivateBin/PrivateBin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 0.22
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*/
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'use strict';
/** global: Base64 */
/** global: FileReader */
/** global: RawDeflate */
/** global: history */
/** global: navigator */
/** global: prettyPrint */
/** global: prettyPrintOne */
/** global: showdown */
/** global: sjcl */
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// Immediately start random number generator collector.
sjcl.random.startCollectors();
$(function() {
/**
* static helper methods
*/
var helper = {
/**
* Converts a duration (in seconds) into human friendly approximation.
*
* @param int seconds
* @return array
*/
secondsToHuman: function(seconds)
{
var v;
if (seconds < 60)
{
v = Math.floor(seconds);
return [v, 'second'];
}
if (seconds < 60 * 60)
{
v = Math.floor(seconds / 60);
return [v, 'minute'];
}
if (seconds < 60 * 60 * 24)
{
v = Math.floor(seconds / (60 * 60));
return [v, 'hour'];
}
// If less than 2 months, display in days:
if (seconds < 60 * 60 * 24 * 60)
{
v = Math.floor(seconds / (60 * 60 * 24));
return [v, 'day'];
}
v = Math.floor(seconds / (60 * 60 * 24 * 30));
return [v, 'month'];
},
/**
* Converts an associative array to an encoded string
* for appending to the anchor.
*
* @param object associative_array Object to be serialized
* @return string
*/
hashToParameterString: function(associativeArray)
{
var parameterString = '';
for (key in associativeArray)
{
if(parameterString === '')
{
parameterString = encodeURIComponent(key);
parameterString += '=' + encodeURIComponent(associativeArray[key]);
}
else
{
parameterString += '&' + encodeURIComponent(key);
parameterString += '=' + encodeURIComponent(associativeArray[key]);
}
}
// padding for URL shorteners
parameterString += '&p=p';
return parameterString;
},
/**
* Converts a string to an associative array.
*
* @param string parameter_string String containing parameters
* @return object
*/
parameterStringToHash: function(parameterString)
{
var parameterHash = {};
var parameterArray = parameterString.split('&');
for (var i = 0; i < parameterArray.length; i++)
{
var pair = parameterArray[i].split('=');
var key = decodeURIComponent(pair[0]);
var value = decodeURIComponent(pair[1]);
parameterHash[key] = value;
}
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return parameterHash;
},
/**
* Get an associative array of the parameters found in the anchor
*
* @return object
*/
getParameterHash: function()
{
var hashIndex = window.location.href.indexOf('#');
if (hashIndex >= 0)
{
return this.parameterStringToHash(window.location.href.substring(hashIndex + 1));
}
else
{
return {};
}
},
/**
* Convert all applicable characters to HTML entities
*
* @param string str
* @return string encoded string
*/
htmlEntities: function(str)
{
return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
},
/**
* Text range selection.
* From: http://stackoverflow.com/questions/985272/jquery-selecting-text-in-an-element-akin-to-highlighting-with-your-mouse
*
* @param string element : Indentifier of the element to select (id="").
*/
selectText: function(element)
{
var doc = document,
text = doc.getElementById(element),
range,
selection;
// MS
if (doc.body.createTextRange)
{
range = doc.body.createTextRange();
range.moveToElementText(text);
range.select();
}
// all others
else if (window.getSelection)
{
selection = window.getSelection();
range = doc.createRange();
range.selectNodeContents(text);
selection.removeAllRanges();
selection.addRange(range);
}
},
/**
* Set text of a DOM element (required for IE)
* This is equivalent to element.text(text)
*
* @param object element : a DOM element.
* @param string text : the text to enter.
*/
setElementText: function(element, text)
{
// For IE<10: Doesn't support white-space:pre-wrap; so we have to do this...
if ($('#oldienotice').is(':visible')) {
var html = this.htmlEntities(text).replace(/\n/ig,'\r\n<br>');
element.html('<pre>'+html+'</pre>');
}
// for other (sane) browsers:
else
{
element.text(text);
}
},
/**
* replace last child of element with message
*
* @param object element : a jQuery wrapped DOM element.
* @param string message : the message to append.
*/
setMessage: function(element, message)
{
var content = element.contents();
if (content.length > 0)
{
content[content.length - 1].nodeValue = ' ' + message;
}
else
{
this.setElementText(element, message);
}
},
/**
* Convert URLs to clickable links.
* URLs to handle:
* <code>
* magnet:?xt.1=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C&xt.2=urn:sha1:TXGCZQTH26NL6OUQAJJPFALHG2LTGBC7
* http://localhost:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
* http://user:password@localhost:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
* </code>
*
* @param object element : a jQuery DOM element.
*/
urls2links: function(element)
{
var markup = '<a href="$1" rel="nofollow">$1</a>';
element.html(
element.html().replace(
/((http|https|ftp):\/\/[\w?=&.\/-;#@~%+-]+(?![\w\s?&.\/;#~%"=-]*>))/ig,
markup
)
);
element.html(
element.html().replace(
/((magnet):[\w?=&.\/-;#@~%+-]+)/ig,
markup
)
);
},
/**
* minimal sprintf emulation for %s and %d formats
* From: http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format#4795914
*
* @param string format
* @param mixed args one or multiple parameters injected into format string
* @return string
*/
sprintf: function()
{
var args = arguments;
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if (typeof arguments[0] === 'object')
{
args = arguments[0];
}
var string = args[0],
i = 1;
return string.replace(/%((%)|s|d)/g, function (m) {
// m is the matched format, e.g. %s, %d
var val;
if (m[2]) {
val = m[2];
} else {
val = args[i];
// A switch statement so that the formatter can be extended.
switch (m)
{
case '%d':
val = parseFloat(val);
if (isNaN(val)) {
val = 0;
}
break;
default:
// Default is %s
}
++i;
}
return val;
});
},
/**
* get value of cookie, if it was set, empty string otherwise
* From: http://www.w3schools.com/js/js_cookies.asp
*
* @param string cname
* @return string
*/
getCookie: function(cname) {
var name = cname + '=';
var ca = document.cookie.split(';');
for(var i = 0; i < ca.length; ++i) {
var c = ca[i];
while (c.charAt(0) === ' ') c = c.substring(1);
if (c.indexOf(name) === 0)
{
return c.substring(name.length, c.length);
}
}
return '';
}
};
/**
* internationalization methods
*/
var i18n = {
/**
* supported languages, minus the built in 'en'
*/
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supportedLanguages: ['de', 'fr', 'pl', 'sl', 'zh'],
/**
* translate a string, alias for translate()
*
* @param string $messageId
* @param mixed args one or multiple parameters injected into placeholders
* @return string
*/
_: function()
{
return this.translate(arguments);
},
/**
* translate a string
*
* @param string $messageId
* @param mixed args one or multiple parameters injected into placeholders
* @return string
*/
translate: function()
{
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var args = arguments, messageId;
if (typeof arguments[0] === 'object')
{
args = arguments[0];
}
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var usesPlurals = $.isArray(args[0]);
if (usesPlurals)
{
// use the first plural form as messageId, otherwise the singular
messageId = (args[0].length > 1 ? args[0][1] : args[0][0]);
}
else
{
messageId = args[0];
}
if (messageId.length === 0)
{
return messageId;
}
if (!this.translations.hasOwnProperty(messageId))
{
if (this.language !== 'en')
{
console.debug(
'Missing ' + this.language + ' translation for: ' + messageId
);
}
this.translations[messageId] = args[0];
}
if (usesPlurals && $.isArray(this.translations[messageId]))
{
var n = parseInt(args[1] || 1, 10),
key = this.getPluralForm(n),
maxKey = this.translations[messageId].length - 1;
if (key > maxKey)
{
key = maxKey;
}
args[0] = this.translations[messageId][key];
args[1] = n;
}
else
{
args[0] = this.translations[messageId];
}
return helper.sprintf(args);
},
/**
* per language functions to use to determine the plural form
* From: http://localization-guide.readthedocs.org/en/latest/l10n/pluralforms.html
*
* @param int number
* @return int array key
*/
getPluralForm: function(n) {
switch (this.language)
{
case 'fr':
case 'zh':
return (n > 1 ? 1 : 0);
case 'pl':
return (n === 1 ? 0 : n%10 >= 2 && n %10 <=4 && (n%100 < 10 || n%100 >= 20) ? 1 : 2);
// en, de
default:
return (n !== 1 ? 1 : 0);
}
},
/**
* load translations into cache, then execute callback function
*
* @param function callback
*/
loadTranslations: function(callback)
{
var selectedLang = helper.getCookie('lang');
var language = selectedLang.length > 0 ? selectedLang : (navigator.language || navigator.userLanguage).substring(0, 2);
// note that 'en' is built in, so no translation is necessary
if (this.supportedLanguages.indexOf(language) === -1)
{
callback();
}
else
{
$.getJSON('i18n/' + language + '.json', function(data) {
i18n.language = language;
i18n.translations = data;
callback();
});
}
},
/**
* built in language
*/
language: 'en',
/**
* translation cache
*/
translations: {}
};
/**
* filter methods
*/
var filter = {
/**
* Compress a message (deflate compression). Returns base64 encoded data.
*
* @param string message
* @return base64 string data
*/
compress: function(message)
{
return Base64.toBase64( RawDeflate.deflate( Base64.utob(message) ) );
},
/**
* Decompress a message compressed with compress().
*
* @param base64 string data
* @return string message
*/
decompress: function(data)
{
return Base64.btou( RawDeflate.inflate( Base64.fromBase64(data) ) );
},
/**
* Compress, then encrypt message with key.
*
* @param string key
* @param string password
* @param string message
* @return encrypted string data
*/
cipher: function(key, password, message)
{
if ((password || '').trim().length === 0)
{
return sjcl.encrypt(key, this.compress(message), {mode : 'gcm'});
}
return sjcl.encrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(password)), this.compress(message), {mode : 'gcm'});
},
/**
* Decrypt message with key, then decompress.
*
* @param string key
* @param string password
* @param encrypted string data
* @return string readable message
*/
decipher: function(key, password, data)
{
if (data !== undefined)
{
try
{
return this.decompress(sjcl.decrypt(key, data));
}
catch(err)
{
try
{
return this.decompress(sjcl.decrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(password)), data));
}
catch(e)
{}
}
}
return '';
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}
};
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var privatebin = {
/**
* headers to send in AJAX requests
*/
headers: {'X-Requested-With': 'JSONHttpRequest'},
/**
* Get the current script location (without search or hash part of the URL).
* eg. http://server.com/zero/?aaaa#bbbb --> http://server.com/zero/
*
* @return string current script location
*/
scriptLocation: function()
{
var scriptLocation = window.location.href.substring(0,window.location.href.length
- window.location.search.length - window.location.hash.length),
hashIndex = scriptLocation.indexOf('#');
if (hashIndex !== -1)
{
scriptLocation = scriptLocation.substring(0, hashIndex);
}
return scriptLocation;
},
/**
* Get the pastes unique identifier from the URL
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* eg. http://server.com/zero/?c05354954c49a487#c05354954c49a487 returns c05354954c49a487
*
* @return string unique identifier
*/
pasteID: function()
{
return window.location.search.substring(1);
},
/**
* Return the deciphering key stored in anchor part of the URL
*
* @return string key
*/
pageKey: function()
{
// Some web 2.0 services and redirectors add data AFTER the anchor
// (such as &utm_source=...). We will strip any additional data.
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var key = window.location.hash.substring(1), // Get key
i = key.indexOf('=');
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// First, strip everything after the equal sign (=) which signals end of base64 string.
if (i > -1)
{
key = key.substring(0, i + 1);
}
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// If the equal sign was not present, some parameters may remain:
i = key.indexOf('&');
if (i > -1)
{
key = key.substring(0, i);
}
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// Then add trailing equal sign if it's missing
if (key.charAt(key.length - 1) !== '=')
{
key += '=';
}
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return key;
},
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/**
* ask the user for the password and return it
*
* @throws error when dialog canceled
* @return string password
*/
requestPassword: function()
{
var password = prompt(i18n._('Please enter the password for this paste:'), '');
if (password === null)
{
throw 'password prompt canceled';
}
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if (password.length === 0)
{
return this.requestPassword();
}
return password;
},
/**
* use given format on paste, defaults to plain text
*
* @param string format
* @param string text
*/
formatPaste: function(format, text)
{
helper.setElementText(this.clearText, text);
helper.setElementText(this.prettyPrint, text);
switch (format || 'plaintext')
{
case 'markdown':
if (typeof showdown === 'object')
{
showdown.setOption('strikethrough', true);
showdown.setOption('tables', true);
showdown.setOption('tablesHeaderId', true);
var converter = new showdown.Converter();
this.clearText.html(
converter.makeHtml(text)
);
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this.clearText.removeClass('hidden');
}
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this.prettyMessage.addClass('hidden');
break;
case 'syntaxhighlighting':
if (typeof prettyPrintOne === 'function')
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{
if (typeof prettyPrint === 'function')
{
prettyPrint();
}
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this.prettyPrint.html(
prettyPrintOne(text, null, true)
);
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}
// fall through, as the rest is the same
default:
// Convert URLs to clickable links.
helper.urls2links(this.clearText);
helper.urls2links(this.prettyPrint);
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this.clearText.addClass('hidden');
if (format === 'plaintext')
{
this.prettyPrint.css('white-space', 'pre-wrap');
this.prettyPrint.css('word-break', 'normal');
this.prettyPrint.removeClass('prettyprint');
}
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this.prettyMessage.removeClass('hidden');
}
},
/**
* Show decrypted text in the display area, including discussion (if open)
*
* @param string key : decryption key
* @param object paste : paste object including comments to display (items = array with keys ('data','meta')
*/
displayMessages: function(key, paste)
{
// Try to decrypt the paste.
var password = this.passwordInput.val();
if (!this.prettyPrint.hasClass('prettyprinted')) {
try
{
if (paste.attachment)
{
var attachment = filter.decipher(key, password, paste.attachment);
if (attachment.length === 0)
{
if (password.length === 0)
{
password = this.requestPassword();
}
attachment = filter.decipher(key, password, paste.attachment);
}
if (attachment.length === 0)
{
throw 'failed to decipher attachment';
}
if (paste.attachmentname)
{
var attachmentname = filter.decipher(key, password, paste.attachmentname);
if (attachmentname.length > 0)
{
this.attachmentLink.attr('download', attachmentname);
}
}
this.attachmentLink.attr('href', attachment);
this.attachment.removeClass('hidden');
// if the attachment is an image, display it
var imagePrefix = 'data:image/';
if (attachment.substring(0, imagePrefix.length) === imagePrefix)
{
this.image.html(
$(document.createElement('img'))
.attr('src', attachment)
.attr('class', 'img-thumbnail')
);
this.image.removeClass('hidden');
}
}
var cleartext = filter.decipher(key, password, paste.data);
if (cleartext.length === 0 && password.length === 0 && !paste.attachment)
{
password = this.requestPassword();
cleartext = filter.decipher(key, password, paste.data);
}
if (cleartext.length === 0 && !paste.attachment)
{
throw 'failed to decipher message';
}
this.passwordInput.val(password);
if (cleartext.length > 0)
{
this.formatPaste(paste.meta.formatter, cleartext);
}
}
catch(err)
{
this.clearText.addClass('hidden');
this.prettyMessage.addClass('hidden');
this.cloneButton.addClass('hidden');
this.showError(i18n._('Could not decrypt data (Wrong key?)'));
return;
}
}
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// Display paste expiration / for your eyes only.
if (paste.meta.expire_date)
{
var expiration = helper.secondsToHuman(paste.meta.remaining_time),
expirationLabel = [
'This document will expire in %d ' + expiration[1] + '.',
'This document will expire in %d ' + expiration[1] + 's.'
];
helper.setMessage(this.remainingTime, i18n._(expirationLabel, expiration[0]));
this.remainingTime.removeClass('foryoureyesonly')
.removeClass('hidden');
}
if (paste.meta.burnafterreading)
{
// unfortunately many web servers don't support DELETE (and PUT) out of the box
$.ajax({
type: 'POST',
url: this.scriptLocation() + '?' + this.pasteID(),
data: {deletetoken: 'burnafterreading'},
dataType: 'json',
headers: this.headers
})
.fail(function() {
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privatebin.showError(i18n._('Could not delete the paste, it was not stored in burn after reading mode.'));
});
helper.setMessage(this.remainingTime, i18n._(
'FOR YOUR EYES ONLY. Don\'t close this window, this message can\'t be displayed again.'
));
this.remainingTime.addClass('foryoureyesonly')
.removeClass('hidden');
// Discourage cloning (as it can't really be prevented).
this.cloneButton.addClass('hidden');
}
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// If the discussion is opened on this paste, display it.
if (paste.meta.opendiscussion)
{
this.comments.html('');
// iterate over comments
for (var i = 0; i < paste.comments.length; ++i)
{
var place = this.comments;
var comment = paste.comments[i];
var commenttext = filter.decipher(key, password, comment.data);
// If parent comment exists, display below (CSS will automatically shift it right.)
var cname = '#comment_' + comment.parentid;
// If the element exists in page
if ($(cname).length)
{
place = $(cname);
}
var divComment = $('<article><div class="comment" id="comment_' + comment.id + '">'
+ '<div class="commentmeta"><span class="nickname"></span><span class="commentdate"></span></div><div class="commentdata"></div>'
+ '<button class="btn btn-default btn-sm">' + i18n._('Reply') + '</button>'
+ '</div></article>');
divComment.find('button').click({commentid: comment.id}, $.proxy(this.openReply, this));
helper.setElementText(divComment.find('div.commentdata'), commenttext);
// Convert URLs to clickable links in comment.
helper.urls2links(divComment.find('div.commentdata'));
// Try to get optional nickname:
var nick = filter.decipher(key, password, comment.meta.nickname);
if (nick.length > 0)
{
divComment.find('span.nickname').text(nick);
}
else
{
divComment.find('span.nickname').html('<i>' + i18n._('Anonymous') + '</i>');
}
divComment.find('span.commentdate')
.text(' (' + (new Date(comment.meta.postdate * 1000).toLocaleString()) + ')')
.attr('title', 'CommentID: ' + comment.id);
// If an avatar is available, display it.
if (comment.meta.vizhash)
{
divComment.find('span.nickname')
.before(
'<img src="' + comment.meta.vizhash + '" class="vizhash" title="' +
i18n._('Anonymous avatar (Vizhash of the IP address)') + '" /> '
);
}
place.append(divComment);
}
var divComment = $(
'<div class="comment"><button class="btn btn-default btn-sm">' +
i18n._('Add comment') + '</button></div>'
);
divComment.find('button').click({commentid: this.pasteID()}, $.proxy(this.openReply, this));
this.comments.append(divComment);
this.discussion.removeClass('hidden');
}
},
/**
* Open the comment entry when clicking the "Reply" button of a comment.
*
* @param Event event
*/
openReply: function(event)
{
event.preventDefault();
var source = $(event.target),
commentid = event.data.commentid,
hint = i18n._('Optional nickname...');
// Remove any other reply area.
$('div.reply').remove();
var reply = $(
'<div class="reply">' +
'<input type="text" id="nickname" class="form-control" title="' + hint + '" placeholder="' + hint + '" />' +
'<textarea id="replymessage" class="replymessage form-control" cols="80" rows="7"></textarea>' +
'<br /><button id="replybutton" class="btn btn-default btn-sm">' + i18n._('Post comment') + '</button>' +
'<div id="replystatus"> </div>' +
'</div>'
);
reply.find('button').click({parentid: commentid}, $.proxy(this.sendComment, this));
source.after(reply);
$('#replymessage').focus();
},
/**
* Send a reply in a discussion.
*
* @param Event event
*/
sendComment: function(event)
{
event.preventDefault();
this.errorMessage.addClass('hidden');
// Do not send if no data.
var replyMessage = $('#replymessage');
if (replyMessage.val().length === 0)
{
return;
}
this.showStatus(i18n._('Sending comment...'), true);
var parentid = event.data.parentid;
var cipherdata = filter.cipher(this.pageKey(), this.passwordInput.val(), replyMessage.val());
var ciphernickname = '';
var nick = $('#nickname').val();
if (nick !== '')
{
ciphernickname = filter.cipher(this.pageKey(), this.passwordInput.val(), nick);
}
var data_to_send = {
data: cipherdata,
parentid: parentid,
pasteid: this.pasteID(),
nickname: ciphernickname
};
$.ajax({
type: 'POST',
url: this.scriptLocation(),
data: data_to_send,
dataType: 'json',
headers: this.headers,
success: function(data)
{
if (data.status === 0)
{
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privatebin.showStatus(i18n._('Comment posted.'), false);
$.ajax({
type: 'GET',
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url: privatebin.scriptLocation() + '?' + privatebin.pasteID(),
dataType: 'json',
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headers: privatebin.headers,
success: function(data)
{
if (data.status === 0)
{
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privatebin.displayMessages(privatebin.pageKey(), data);
}
else if (data.status === 1)
{
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privatebin.showError(i18n._('Could not refresh display: %s', data.message));
}
else
{
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privatebin.showError(i18n._('Could not refresh display: %s', i18n._('unknown status')));
}
}
})
.fail(function() {
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privatebin.showError(i18n._('Could not refresh display: %s', i18n._('server error or not responding')));
});
}
else if (data.status === 1)
{
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privatebin.showError(i18n._('Could not post comment: %s', data.message));
}
else
{
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privatebin.showError(i18n._('Could not post comment: %s', i18n._('unknown status')));
}
}
})
.fail(function() {
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privatebin.showError(i18n._('Could not post comment: %s', i18n._('server error or not responding')));
});
},
/**
* Send a new paste to server
*
* @param Event event
*/
sendData: function(event)
{
event.preventDefault();
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var file = document.getElementById('file'),
files = (file && file.files) ? file.files : null; // FileList object
// Do not send if no data.
if (this.message.val().length === 0 && !(files && files[0]))
{
return;
}
// If sjcl has not collected enough entropy yet, display a message.
if (!sjcl.random.isReady())
{
this.showStatus(i18n._('Sending paste (Please move your mouse for more entropy)...'), true);
sjcl.random.addEventListener('seeded', function() {
this.sendData(event);
});
return;
}
$('.navbar-toggle').click();
this.password.addClass('hidden');
this.showStatus(i18n._('Sending paste...'), true);
var randomkey = sjcl.codec.base64.fromBits(sjcl.random.randomWords(8, 0), 0);
var cipherdata_attachment;
var password = this.passwordInput.val();
if(files && files[0])
{
if(typeof FileReader === undefined)
{
this.showError(i18n._('Your browser does not support uploading encrypted files. Please use a newer browser.'));
return;
}
var reader = new FileReader();
// Closure to capture the file information.
reader.onload = (function(theFile)
{
return function(e) {
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privatebin.sendDataContinue(
randomkey,
filter.cipher(randomkey, password, e.target.result),
filter.cipher(randomkey, password, theFile.name)
);
};
})(files[0]);
reader.readAsDataURL(files[0]);
}
else if(this.attachmentLink.attr('href'))
{
this.sendDataContinue(
randomkey,
filter.cipher(randomkey, password, this.attachmentLink.attr('href')),
this.attachmentLink.attr('download')
);
}
else
{
this.sendDataContinue(randomkey, '', '');
}
},
/**
* Send a new paste to server, step 2
*
* @param string randomkey
* @param encrypted string cipherdata_attachment
* @param encrypted string cipherdata_attachment_name
*/
sendDataContinue: function(randomkey, cipherdata_attachment, cipherdata_attachment_name)
{
var cipherdata = filter.cipher(randomkey, this.passwordInput.val(), this.message.val());
var data_to_send = {
data: cipherdata,
expire: $('#pasteExpiration').val(),
formatter: $('#pasteFormatter').val(),
burnafterreading: this.burnAfterReading.is(':checked') ? 1 : 0,
opendiscussion: this.openDiscussion.is(':checked') ? 1 : 0
};
if (cipherdata_attachment.length > 0)
{
data_to_send.attachment = cipherdata_attachment;
if (cipherdata_attachment_name.length > 0)
{
data_to_send.attachmentname = cipherdata_attachment_name;
}
}
$.ajax({
type: 'POST',
url: this.scriptLocation(),
data: data_to_send,
dataType: 'json',
headers: this.headers,
success: function(data)
{
if (data.status === 0) {
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privatebin.stateExistingPaste();
var url = privatebin.scriptLocation() + '?' + data.id + '#' + randomkey;
var deleteUrl = privatebin.scriptLocation() + '?pasteid=' + data.id + '&deletetoken=' + data.deletetoken;
privatebin.showStatus('', false);
privatebin.errorMessage.addClass('hidden');
$('#pastelink').html(
i18n._(
'Your paste is <a id="pasteurl" href="%s">%s</a> <span id="copyhint">(Hit [Ctrl]+[c] to copy)</span>',
url, url
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) + privatebin.shortenUrl(url)
);
$('#deletelink').html('<a href="' + deleteUrl + '">' + i18n._('Delete data') + '</a>');
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privatebin.pasteResult.removeClass('hidden');
// We pre-select the link so that the user only has to [Ctrl]+[c] the link.
helper.selectText('pasteurl');
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privatebin.showStatus('', false);
privatebin.formatPaste(data_to_send.formatter, privatebin.message.val());
}
else if (data.status === 1)
{
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privatebin.showError(i18n._('Could not create paste: %s', data.message));
}
else
{
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privatebin.showError(i18n._('Could not create paste: %s', i18n._('unknown status')));
}
}
})
.fail(function()
{
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privatebin.showError(i18n._('Could not create paste: %s', i18n._('server error or not responding')));
});
},
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/**
* Check if a URL shortener was defined and create HTML containing a link to it.
*
* @param string url
* @return string html
*/
shortenUrl: function(url)
{
var shortenerHtml = $('#shortenbutton');
if (shortenerHtml) {
var shortener = shortenerHtml.data('shortener');
shortenerHtml.attr(
'onclick',
"window.location.href = '" + shortener + encodeURIComponent(url) + "';"
);
return ' ' + $('<div />').append(shortenerHtml.clone()).html();
}
return '';
},
/**
* Put the screen in "New paste" mode.
*/
stateNewPaste: function()
{
this.message.text('');
this.attachment.addClass('hidden');
this.cloneButton.addClass('hidden');
this.rawTextButton.addClass('hidden');
this.remainingTime.addClass('hidden');
this.pasteResult.addClass('hidden');
this.clearText.addClass('hidden');
this.discussion.addClass('hidden');
this.prettyMessage.addClass('hidden');
this.sendButton.removeClass('hidden');
this.expiration.removeClass('hidden');
this.formatter.removeClass('hidden');
this.burnAfterReadingOption.removeClass('hidden');
this.openDisc.removeClass('hidden');
this.newButton.removeClass('hidden');
this.password.removeClass('hidden');
this.attach.removeClass('hidden');
this.message.removeClass('hidden');
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this.preview.removeClass('hidden');
this.message.focus();
},
/**
* Put the screen in "Existing paste" mode.
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*
* @param boolean preview (optional) : tell if the preview tabs should be displayed, defaults to false.
*/
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stateExistingPaste: function(preview)
{
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preview = preview || false;
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if (!preview)
{
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// No "clone" for IE<10.
if ($('#oldienotice').is(":visible"))
{
this.cloneButton.addClass('hidden');
}
else
{
this.cloneButton.removeClass('hidden');
}
this.rawTextButton.removeClass('hidden');
this.sendButton.addClass('hidden');
this.attach.addClass('hidden');
this.expiration.addClass('hidden');
this.formatter.addClass('hidden');
this.burnAfterReadingOption.addClass('hidden');
this.openDisc.addClass('hidden');
this.newButton.removeClass('hidden');
this.preview.addClass('hidden');
}
this.pasteResult.addClass('hidden');
this.message.addClass('hidden');
this.clearText.addClass('hidden');
this.prettyMessage.addClass('hidden');
},
/**
* If "burn after reading" is checked, disable discussion.
*/
changeBurnAfterReading: function()
{
if (this.burnAfterReading.is(':checked') )
{
this.openDisc.addClass('buttondisabled');
this.openDiscussion.attr({checked: false, disabled: true});
}
else
{
this.openDisc.removeClass('buttondisabled');
this.openDiscussion.removeAttr('disabled');
}
},
/**
* Reload the page.
*
* @param Event event
*/
reloadPage: function(event)
{
event.preventDefault();
window.location.href = this.scriptLocation();
},
/**
* Return raw text.
*
* @param Event event
*/
rawText: function(event)
{
event.preventDefault();
var paste = this.clearText.html();
var newDoc = document.open('text/html', 'replace');
newDoc.write('<pre>' + paste + '</pre>');
newDoc.close();
},
/**
* Clone the current paste.
*
* @param Event event
*/
clonePaste: function(event)
{
event.preventDefault();
this.stateNewPaste();
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// Erase the id and the key in url
history.replaceState(document.title, document.title, this.scriptLocation());
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this.showStatus('', false);
if (this.attachmentLink.attr('href'))
{
this.clonedFile.removeClass('hidden');
this.fileWrap.addClass('hidden');
}
this.message.text(this.clearText.text());
$('.navbar-toggle').click();
},
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/**
* Support input of tab character.
*
* @param Event event
*/
supportTabs: function(event)
{
var keyCode = event.keyCode || event.which;
// tab was pressed
if (keyCode === 9)
{
// prevent the textarea to lose focus
event.preventDefault();
// get caret position & selection
var val = this.value,
start = this.selectionStart,
end = this.selectionEnd;
// set textarea value to: text before caret + tab + text after caret
this.value = val.substring(0, start) + '\t' + val.substring(end);
// put caret at right position again
this.selectionStart = this.selectionEnd = start + 1;
}
},
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/**
* View the editor tab.
*
* @param Event event
*/
viewEditor: function(event)
{
event.preventDefault();
this.messagePreview.parent().removeClass('active');
this.messageEdit.parent().addClass('active');
this.message.focus();
this.stateNewPaste();
},
/**
* View the preview tab.
*
* @param Event event
*/
viewPreview: function(event)
{
event.preventDefault();
this.messageEdit.parent().removeClass('active');
this.messagePreview.parent().addClass('active');
this.message.focus();
this.stateExistingPaste(true);
this.formatPaste($('#pasteFormatter').val(), this.message.val());
},
/**
* Create a new paste.
*/
newPaste: function()
{
this.stateNewPaste();
this.showStatus('', false);
this.message.text('');
},
/**
* Removes an attachment.
*/
removeAttachment: function()
{
this.clonedFile.addClass('hidden');
// removes the saved decrypted file data
this.attachmentLink.attr('href', '');
// the only way to deselect the file is to recreate the input
this.fileWrap.html(this.fileWrap.html());
this.fileWrap.removeClass('hidden');
},
/**
* Display an error message
* (We use the same function for paste and reply to comments)
*
* @param string message : text to display
*/
showError: function(message)
{
if (this.status.length)
{
this.status.addClass('errorMessage').text(message);
}
else
{
this.errorMessage.removeClass('hidden');
helper.setMessage(this.errorMessage, message);
}
this.replyStatus.addClass('errorMessage').text(message);
},
/**
* Display a status message
* (We use the same function for paste and reply to comments)
*
* @param string message : text to display
* @param boolean spin (optional) : tell if the "spinning" animation should be displayed.
*/
showStatus: function(message, spin)
{
this.replyStatus.removeClass('errorMessage').text(message);
if (!message)
{
this.status.html(' ');
return;
}
if (message === '')
{
this.status.html(' ');
return;
}
this.status.removeClass('errorMessage').text(message);
if (spin)
{
var img = '<img src="img/busy.gif" style="width:16px;height:9px;margin:0 4px 0 0;" />';
this.status.prepend(img);
this.replyStatus.prepend(img);
}
},
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/**
* bind events to DOM elements
*/
bindEvents: function()
{
this.burnAfterReading.change($.proxy(this.changeBurnAfterReading, this));
this.sendButton.click($.proxy(this.sendData, this));
this.cloneButton.click($.proxy(this.clonePaste, this));
this.rawTextButton.click($.proxy(this.rawText, this));
this.fileRemoveButton.click($.proxy(this.removeAttachment, this));
$('.reloadlink').click($.proxy(this.reloadPage, this));
this.message.keydown(this.supportTabs);
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this.messageEdit.click($.proxy(this.viewEditor, this));
this.messagePreview.click($.proxy(this.viewPreview, this));
},
/**
* main application
*/
init: function()
{
// hide "no javascript" message
$('#noscript').hide();
// preload jQuery wrapped DOM elements and bind events
this.attach = $('#attach');
this.attachment = $('#attachment');
this.attachmentLink = $('#attachment a');
this.burnAfterReading = $('#burnafterreading');
this.burnAfterReadingOption = $('#burnafterreadingoption');
this.cipherData = $('#cipherdata');
this.clearText = $('#cleartext');
this.cloneButton = $('#clonebutton');
this.clonedFile = $('#clonedfile');
this.comments = $('#comments');
this.discussion = $('#discussion');
this.errorMessage = $('#errormessage');
this.expiration = $('#expiration');
this.fileRemoveButton = $('#fileremovebutton');
this.fileWrap = $('#filewrap');
this.formatter = $('#formatter');
this.image = $('#image');
this.message = $('#message');
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this.messageEdit = $('#messageedit');
this.messagePreview = $('#messagepreview');
this.newButton = $('#newbutton');
this.openDisc = $('#opendisc');
this.openDiscussion = $('#opendiscussion');
this.password = $('#password');
this.passwordInput = $('#passwordinput');
this.pasteResult = $('#pasteresult');
this.prettyMessage = $('#prettymessage');
this.prettyPrint = $('#prettyprint');
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this.preview = $('#preview');
this.rawTextButton = $('#rawtextbutton');
this.remainingTime = $('#remainingtime');
this.replyStatus = $('#replystatus');
this.sendButton = $('#sendbutton');
this.status = $('#status');
this.bindEvents();
// Display status returned by php code if any (eg. Paste was properly deleted.)
if (this.status.text().length > 0)
{
this.showStatus(this.status.text(), false);
return;
}
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// Keep line height even if content empty.
this.status.html(' ');
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// Display an existing paste
if (this.cipherData.text().length > 1)
{
// Missing decryption key in URL?
if (window.location.hash.length === 0)
{
this.showError(i18n._('Cannot decrypt paste: Decryption key missing in URL (Did you use a redirector or an URL shortener which strips part of the URL?)'));
return;
}
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// List of messages to display.
var data = $.parseJSON(this.cipherData.text());
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// Show proper elements on screen.
this.stateExistingPaste();
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this.displayMessages(this.pageKey(), data);
}
// Display error message from php code.
else if (this.errorMessage.text().length > 1)
{
this.showError(this.errorMessage.text());
}
// Create a new paste.
else
{
this.newPaste();
}
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}
}
/**
* main application start, called when DOM is fully loaded
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* runs privatebin when translations were loaded
*/
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i18n.loadTranslations($.proxy(privatebin.init, privatebin));
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});