Press n or j to go to the next uncovered block, b, p or k for the previous block.
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1x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 119x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 3x 3x 3x 1x 1x 1x 3x 3x 3x 3x 3x 3x 1x 3x 3x 3x 3x 3x 3x 1x 6x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 7x 1x 1x 1x 2825x 809x 2825x 500x 2825x 1309x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* PrivateBin
*
* a zero-knowledge paste bin
*
* @see {@link https://github.com/PrivateBin/PrivateBin}
* @copyright 2012 Sébastien SAUVAGE ({@link http://sebsauvage.net})
* @license {@link https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License}
* @name PrivateBin
* @namespace
*/
// global Base64, DOMPurify, FileReader, RawDeflate, history, navigator, prettyPrint, prettyPrintOne, showdown, kjua
jQuery.fn.draghover = function() {
'use strict';
return this.each(function() {
let collection = $(),
self = $(this);
self.on('dragenter', function(e) {
if (collection.length === 0) {
self.trigger('draghoverstart');
}
collection = collection.add(e.target);
});
self.on('dragleave drop', function(e) {
collection = collection.not(e.target);
if (collection.length === 0) {
self.trigger('draghoverend');
}
});
});
};
// main application start, called when DOM is fully loaded
jQuery(document).ready(function() {
'use strict';
// run main controller
$.PrivateBin.Controller.init();
});
jQuery.PrivateBin = (function($, RawDeflate) {
'use strict';
/**
* zlib library interface
*
* @private
*/
let z;
/**
* DOMpurify settings for HTML content
*
* @private
*/
const purifyHtmlConfig = {
ALLOWED_URI_REGEXP: /^(?:(?:(?:f|ht)tps?|mailto|magnet):)/i,
SAFE_FOR_JQUERY: true,
USE_PROFILES: {
html: true
}
};
/**
* DOMpurify settings for SVG content
*
* @private
*/
const purifySvgConfig = {
USE_PROFILES: {
svg: true,
svgFilters: true
}
};
/**
* URL fragment prefix requiring load confirmation
*
* @private
*/
const loadConfirmPrefix = '#-';
/**
* CryptoData class
*
* bundles helper functions used in both paste and comment formats
*
* @name CryptoData
* @class
*/
function CryptoData(data) {
this.v = 1;
// store all keys in the default locations for drop-in replacement
for (let key in data) {
this[key] = data[key];
}
/**
* gets the cipher data (cipher text + adata)
*
* @name CryptoData.getCipherData
* @function
* @return {Array}|{string}
*/
this.getCipherData = function()
{
return this.v === 1 ? this.data : [this.ct, this.adata];
}
}
/**
* Paste class
*
* bundles helper functions around the paste formats
*
* @name Paste
* @class
*/
function Paste(data) {
// inherit constructor and methods of CryptoData
CryptoData.call(this, data);
/**
* gets the used formatter
*
* @name Paste.getFormat
* @function
* @return {string}
*/
this.getFormat = function()
{
return this.v === 1 ? this.meta.formatter : this.adata[1];
}
/**
* gets the remaining seconds before the paste expires
*
* returns 0 if there is no expiration
*
* @name Paste.getTimeToLive
* @function
* @return {string}
*/
this.getTimeToLive = function()
{
return (this.v === 1 ? this.meta.remaining_time : this.meta.time_to_live) || 0;
}
/**
* is burn-after-reading enabled
*
* @name Paste.isBurnAfterReadingEnabled
* @function
* @return {bool}
*/
this.isBurnAfterReadingEnabled = function()
{
return (this.v === 1 ? this.meta.burnafterreading : this.adata[3]);
}
/**
* are discussions enabled
*
* @name Paste.isDiscussionEnabled
* @function
* @return {bool}
*/
this.isDiscussionEnabled = function()
{
return (this.v === 1 ? this.meta.opendiscussion : this.adata[2]);
}
}
/**
* Comment class
*
* bundles helper functions around the comment formats
*
* @name Comment
* @class
*/
function Comment(data) {
// inherit constructor and methods of CryptoData
CryptoData.call(this, data);
/**
* gets the UNIX timestamp of the comment creation
*
* @name Comment.getCreated
* @function
* @return {int}
*/
this.getCreated = function()
{
return this.meta[this.v === 1 ? 'postdate' : 'created'] || 0;
}
/**
* gets the icon of the comment submitter
*
* @name Comment.getIcon
* @function
* @return {string}
*/
this.getIcon = function()
{
return this.meta[this.v === 1 ? 'vizhash' : 'icon'] || '';
}
}
/**
* static Helper methods
*
* @name Helper
* @class
*/
const Helper = (function () {
const me = {};
/**
* character to HTML entity lookup table
*
* @see {@link https://github.com/janl/mustache.js/blob/master/mustache.js#L60}
* @name Helper.entityMap
* @private
* @enum {Object}
* @readonly
*/
const entityMap = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
'\'': ''',
'/': '/',
'`': '`',
'=': '='
};
/**
* number of seconds in a minute
*
* @name Helper.minute
* @private
* @enum {number}
* @readonly
*/
const minute = 60;
/**
* number of seconds in an hour
*
* = 60 * 60 seconds
*
* @name Helper.minute
* @private
* @enum {number}
* @readonly
*/
const hour = 3600;
/**
* number of seconds in a day
*
* = 60 * 60 * 24 seconds
*
* @name Helper.day
* @private
* @enum {number}
* @readonly
*/
const day = 86400;
/**
* number of seconds in a week
*
* = 60 * 60 * 24 * 7 seconds
*
* @name Helper.week
* @private
* @enum {number}
* @readonly
*/
const week = 604800;
/**
* number of seconds in a month (30 days, an approximation)
*
* = 60 * 60 * 24 * 30 seconds
*
* @name Helper.month
* @private
* @enum {number}
* @readonly
*/
const month = 2592000;
/**
* number of seconds in a non-leap year
*
* = 60 * 60 * 24 * 365 seconds
*
* @name Helper.year
* @private
* @enum {number}
* @readonly
*/
const year = 31536000;
/**
* cache for script location
*
* @name Helper.baseUri
* @private
* @enum {string|null}
*/
let baseUri = null;
/**
* converts a duration (in seconds) into human friendly approximation
*
* @name Helper.secondsToHuman
* @function
* @param {number} seconds
* @return {Array}
*/
me.secondsToHuman = function(seconds)
{
let v;
if (seconds < minute)
{
v = Math.floor(seconds);
return [v, 'second'];
}
if (seconds < hour)
{
v = Math.floor(seconds / minute);
return [v, 'minute'];
}
if (seconds < day)
{
v = Math.floor(seconds / hour);
return [v, 'hour'];
}
// If less than 2 months, display in days:
if (seconds < (2 * month))
{
v = Math.floor(seconds / day);
return [v, 'day'];
}
v = Math.floor(seconds / month);
return [v, 'month'];
};
/**
* converts a duration string into seconds
*
* The string is expected to be optional digits, followed by a time.
* Supported times are: min, hour, day, month, year, never
* Examples: 5min, 13hour, never
*
* @name Helper.durationToSeconds
* @function
* @param {String} duration
* @return {number}
*/
me.durationToSeconds = function(duration)
{
let pieces = duration.split(/(\D+)/),
factor = pieces[0] || 0,
timespan = pieces[1] || pieces[0];
switch (timespan)
{
case 'min':
return factor * minute;
case 'hour':
return factor * hour;
case 'day':
return factor * day;
case 'week':
return factor * week;
case 'month':
return factor * month;
case 'year':
return factor * year;
case 'never':
return 0;
default:
return factor;
}
};
/**
* text range selection
*
* @see {@link https://stackoverflow.com/questions/985272/jquery-selecting-text-in-an-element-akin-to-highlighting-with-your-mouse}
* @name Helper.selectText
* @function
* @param {HTMLElement} element
*/
me.selectText = function(element)
{
let range, selection;
// MS
Iif (document.body.createTextRange) {
range = document.body.createTextRange();
range.moveToElementText(element);
range.select();
} else Iif (window.getSelection) {
selection = window.getSelection();
range = document.createRange();
range.selectNodeContents(element);
selection.removeAllRanges();
selection.addRange(range);
}
};
/**
* convert URLs to clickable links in the provided element.
*
* URLs to handle:
* <pre>
* magnet:?xt.1=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C&xt.2=urn:sha1:TXGCZQTH26NL6OUQAJJPFALHG2LTGBC7
* https://example.com:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
* http://user:example.com@localhost:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
* </pre>
*
* @name Helper.urls2links
* @function
* @param {HTMLElement} element
*/
me.urls2links = function(element)
{
element.html(
DOMPurify.sanitize(
element.html().replace(
/(((https?|ftp):\/\/[\w?!=&.\/-;#@~%+*-]+(?![\w\s?!&.\/;#~%"=-]>))|((magnet):[\w?=&.\/-;#@~%+*-]+))/ig,
'<a href="$1" rel="nofollow noopener noreferrer">$1</a>'
),
purifyHtmlConfig
)
);
};
/**
* minimal sprintf emulation for %s and %d formats
*
* Note that this function needs the parameters in the same order as the
* format strings appear in the string, contrary to the original.
*
* @see {@link https://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format#4795914}
* @name Helper.sprintf
* @function
* @param {string} format
* @param {...*} args - one or multiple parameters injected into format string
* @return {string}
*/
me.sprintf = function()
{
const args = Array.prototype.slice.call(arguments);
let format = args[0],
i = 1;
return format.replace(/%(s|d)/g, function (m) {
let val = args[i];
if (m === '%d') {
val = parseFloat(val);
if (isNaN(val)) {
val = 0;
}
}
++i;
return val;
});
};
/**
* get value of cookie, if it was set, empty string otherwise
*
* @see {@link http://www.w3schools.com/js/js_cookies.asp}
* @name Helper.getCookie
* @function
* @param {string} cname - may not be empty
* @return {string}
*/
me.getCookie = function(cname) {
const name = cname + '=',
ca = document.cookie.split(';');
for (let i = 0; i < ca.length; ++i) {
let c = ca[i];
while (c.charAt(0) === ' ')
{
c = c.substring(1);
}
if (c.indexOf(name) === 0)
{
return c.substring(name.length, c.length);
}
}
return '';
};
/**
* get the current location (without search or hash part of the URL),
* eg. https://example.com/path/?aaaa#bbbb --> https://example.com/path/
*
* @name Helper.baseUri
* @function
* @return {string}
*/
me.baseUri = function()
{
// check for cached version
if (baseUri !== null) {
return baseUri;
}
baseUri = window.location.origin + window.location.pathname;
return baseUri;
};
/**
* wrap an object into a Paste, used for mocking in the unit tests
*
* @name Helper.PasteFactory
* @function
* @param {object} data
* @return {Paste}
*/
me.PasteFactory = function(data)
{
return new Paste(data);
};
/**
* wrap an object into a Comment, used for mocking in the unit tests
*
* @name Helper.CommentFactory
* @function
* @param {object} data
* @return {Comment}
*/
me.CommentFactory = function(data)
{
return new Comment(data);
};
/**
* convert all applicable characters to HTML entities
*
* @see {@link https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html}
* @name Helper.htmlEntities
* @function
* @param {string} str
* @return {string} escaped HTML
*/
me.htmlEntities = function(str) {
return String(str).replace(
/[&<>"'`=\/]/g, function(s) {
return entityMap[s];
}
);
}
/**
* calculate expiration date given initial date and expiration period
*
* @name Helper.calculateExpirationDate
* @function
* @param {Date} initialDate - may not be empty
* @param {string|number} expirationDisplayStringOrSecondsToExpire - may not be empty
* @return {Date}
*/
me.calculateExpirationDate = function(initialDate, expirationDisplayStringOrSecondsToExpire) {
let expirationDate = new Date(initialDate),
secondsToExpiration = expirationDisplayStringOrSecondsToExpire;
if (typeof expirationDisplayStringOrSecondsToExpire === 'string') {
secondsToExpiration = me.durationToSeconds(expirationDisplayStringOrSecondsToExpire);
}
if (typeof secondsToExpiration !== 'number') {
throw new Error('Cannot calculate expiration date.');
}
if (secondsToExpiration === 0) {
return null;
}
expirationDate = expirationDate.setUTCSeconds(expirationDate.getUTCSeconds() + secondsToExpiration);
return expirationDate;
};
/**
* resets state, used for unit testing
*
* @name Helper.reset
* @function
*/
me.reset = function()
{
baseUri = null;
};
return me;
})();
/**
* internationalization module
*
* @name I18n
* @class
*/
const I18n = (function () {
const me = {};
/**
* const for string of loaded language
*
* @name I18n.languageLoadedEvent
* @private
* @prop {string}
* @readonly
*/
const languageLoadedEvent = 'languageLoaded';
/**
* supported languages, minus the built in 'en'
*
* @name I18n.supportedLanguages
* @private
* @prop {string[]}
* @readonly
*/
const supportedLanguages = ['ar', 'bg', 'ca', 'co', 'cs', 'de', 'el', 'es', 'et', 'fi', 'fr', 'he', 'hu', 'id', 'it', 'ja', 'jbo', 'lt', 'no', 'nl', 'pl', 'pt', 'oc', 'ro', 'ru', 'sk', 'sl', 'th', 'tr', 'uk', 'zh'];
/**
* built in language
*
* @name I18n.language
* @private
* @prop {string|null}
*/
let language = null;
/**
* translation cache
*
* @name I18n.translations
* @private
* @enum {Object}
*/
let translations = {};
/**
* translate a string, alias for I18n.translate
*
* @name I18n._
* @function
* @param {jQuery} $element - optional
* @param {string} messageId
* @param {...*} args - one or multiple parameters injected into placeholders
* @return {string}
*/
me._ = function()
{
return me.translate.apply(this, arguments);
};
/**
* translate a string
*
* Optionally pass a jQuery element as the first parameter, to automatically
* let the text of this element be replaced. In case the (asynchronously
* loaded) language is not downloaded yet, this will make sure the string
* is replaced when it eventually gets loaded. Using this is both simpler
* and more secure, as it avoids potential XSS when inserting text.
* The next parameter is the message ID, matching the ones found in
* the translation files under the i18n directory.
* Any additional parameters will get inserted into the message ID in
* place of %s (strings) or %d (digits), applying the appropriate plural
* in case of digits. See also Helper.sprintf().
*
* @name I18n.translate
* @function
* @param {jQuery} $element - optional
* @param {string} messageId
* @param {...*} args - one or multiple parameters injected into placeholders
* @return {string}
*/
me.translate = function()
{
// convert parameters to array
let args = Array.prototype.slice.call(arguments),
messageId,
$element = null;
// parse arguments
if (args[0] instanceof jQuery) {
// optional jQuery element as first parameter
$element = args[0];
args.shift();
}
// extract messageId from arguments
let 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 no translation string cannot be found (in translations object)
if (!translations.hasOwnProperty(messageId) || language === null) {
// if language is still loading and we have an elemt assigned
if (language === null && $element !== null) {
// handle the error by attaching the language loaded event
let orgArguments = arguments;
$(document).on(languageLoadedEvent, function () {
// re-execute this function
me.translate.apply(this, orgArguments);
});
// and fall back to English for now until the real language
// file is loaded
}
// for all other languages than English for which this behaviour
// is expected as it is built-in, log error
Iif (language !== null && language !== 'en') {
console.error('Missing translation for: \'' + messageId + '\' in language ' + language);
// fallback to English
}
// save English translation (should be the same on both sides)
translations[messageId] = args[0];
}
// lookup plural translation
if (usesPlurals && $.isArray(translations[messageId])) {
let n = parseInt(args[1] || 1, 10),
key = me.getPluralForm(n),
maxKey = translations[messageId].length - 1;
Iif (key > maxKey) {
key = maxKey;
}
args[0] = translations[messageId][key];
args[1] = n;
} else {
// lookup singular translation
args[0] = translations[messageId];
}
// messageID may contain links, but should be from a trusted source (code or translation JSON files)
let containsLinks = args[0].indexOf('<a') !== -1;
// prevent double encoding, when we insert into a text node
if (containsLinks || $element === null) {
for (let i = 0; i < args.length; ++i) {
// parameters (i > 0) may never contain HTML as they may come from untrusted parties
if ((containsLinks ? i > 1 : i > 0) || !containsLinks) {
args[i] = Helper.htmlEntities(args[i]);
}
}
}
// format string
let output = Helper.sprintf.apply(this, args);
if (containsLinks) {
// only allow tags/attributes we actually use in translations
output = DOMPurify.sanitize(
output, {
ALLOWED_TAGS: ['a', 'i', 'span'],
ALLOWED_ATTR: ['href', 'id']
}
);
}
// if $element is given, insert translation
if ($element !== null) {
if (containsLinks) {
$element.html(output);
} else {
// text node takes care of entity encoding
$element.text(output);
}
return '';
}
return output;
};
/**
* get currently loaded language
*
* @name I18n.getLanguage
* @function
* @return {string}
*/
me.getLanguage = function()
{
return language;
};
/**
* per language functions to use to determine the plural form
*
* @see {@link https://docs.translatehouse.org/projects/localization-guide/en/latest/l10n/pluralforms.html}
* @name I18n.getPluralForm
* @function
* @param {int} n
* @return {int} array key
*/
me.getPluralForm = function(n) {
switch (language)
{
case 'ar':
return n === 0 ? 0 : (n === 1 ? 1 : (n === 2 ? 2 : (n % 100 >= 3 && n % 100 <= 10 ? 3 : (n % 100 >= 11 ? 4 : 5))));
case 'cs':
case 'sk':
return n === 1 ? 0 : (n >= 2 && n <= 4 ? 1 : 2);
case 'co':
case 'fr':
case 'oc':
case 'tr':
case 'zh':
return n > 1 ? 1 : 0;
case 'he':
return n === 1 ? 0 : (n === 2 ? 1 : ((n < 0 || n > 10) && (n % 10 === 0) ? 2 : 3));
case 'id':
case 'ja':
case 'jbo':
case 'th':
return 0;
case 'lt':
return n % 10 === 1 && n % 100 !== 11 ? 0 : ((n % 10 >= 2 && n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
case 'pl':
return n === 1 ? 0 : (n % 10 >= 2 && n %10 <= 4 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
case 'ro':
return n === 1 ? 0 : ((n === 0 || (n % 100 > 0 && n % 100 < 20)) ? 1 : 2);
case 'ru':
case 'uk':
return n % 10 === 1 && n % 100 !== 11 ? 0 : (n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
case 'sl':
return n % 100 === 1 ? 1 : (n % 100 === 2 ? 2 : (n % 100 === 3 || n % 100 === 4 ? 3 : 0));
// bg, ca, de, el, en, es, et, fi, hu, it, nl, no, pt
default:
return n !== 1 ? 1 : 0;
}
};
/**
* load translations into cache
*
* @name I18n.loadTranslations
* @function
*/
me.loadTranslations = function()
{
let newLanguage = Helper.getCookie('lang');
// auto-select language based on browser settings
if (newLanguage.length === 0) {
newLanguage = (navigator.language || navigator.userLanguage || 'en');
if (newLanguage.indexOf('-') > 0) {
newLanguage = newLanguage.split('-')[0];
}
}
// if language is already used skip update
if (newLanguage === language) {
return;
}
// if language is built-in (English) skip update
Eif (newLanguage === 'en') {
language = 'en';
return;
}
// if language is not supported, show error
if (supportedLanguages.indexOf(newLanguage) === -1) {
console.error('Language \'%s\' is not supported. Translation failed, fallback to English.', newLanguage);
language = 'en';
return;
}
// load strings from JSON
$.getJSON('i18n/' + newLanguage + '.json', function(data) {
language = newLanguage;
translations = data;
$(document).triggerHandler(languageLoadedEvent);
}).fail(function (data, textStatus, errorMsg) {
console.error('Language \'%s\' could not be loaded (%s: %s). Translation failed, fallback to English.', newLanguage, textStatus, errorMsg);
language = 'en';
});
};
/**
* resets state, used for unit testing
*
* @name I18n.reset
* @function
*/
me.reset = function(mockLanguage, mockTranslations)
{
language = mockLanguage || null;
translations = mockTranslations || {};
};
return me;
})();
/**
* handles everything related to en/decryption
*
* @name CryptTool
* @class
*/
const CryptTool = (function () {
const me = {};
/**
* base58 encoder & decoder
*
* @private
*/
let base58 = new baseX('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz');
/**
* convert UTF-8 string stored in a DOMString to a standard UTF-16 DOMString
*
* Iterates over the bytes of the message, converting them all hexadecimal
* percent encoded representations, then URI decodes them all
*
* @name CryptTool.utf8To16
* @function
* @private
* @param {string} message UTF-8 string
* @return {string} UTF-16 string
*/
function utf8To16(message)
{
return decodeURIComponent(
message.split('').map(
function(character)
{
return '%' + ('00' + character.charCodeAt(0).toString(16)).slice(-2);
}
).join('')
);
}
/**
* convert DOMString (UTF-16) to a UTF-8 string stored in a DOMString
*
* URI encodes the message, then finds the percent encoded characters
* and transforms these hexadecimal representation back into bytes
*
* @name CryptTool.utf16To8
* @function
* @private
* @param {string} message UTF-16 string
* @return {string} UTF-8 string
*/
function utf16To8(message)
{
return encodeURIComponent(message).replace(
/%([0-9A-F]{2})/g,
function (match, hexCharacter)
{
return String.fromCharCode('0x' + hexCharacter);
}
);
}
/**
* convert ArrayBuffer into a UTF-8 string
*
* Iterates over the bytes of the array, catenating them into a string
*
* @name CryptTool.arraybufferToString
* @function
* @private
* @param {ArrayBuffer} messageArray
* @return {string} message
*/
function arraybufferToString(messageArray)
{
const array = new Uint8Array(messageArray);
let message = '',
i = 0;
while(i < array.length) {
message += String.fromCharCode(array[i++]);
}
return message;
}
/**
* convert UTF-8 string into a Uint8Array
*
* Iterates over the bytes of the message, writing them to the array
*
* @name CryptTool.stringToArraybuffer
* @function
* @private
* @param {string} message UTF-8 string
* @return {Uint8Array} array
*/
function stringToArraybuffer(message)
{
const messageArray = new Uint8Array(message.length);
for (let i = 0; i < message.length; ++i) {
messageArray[i] = message.charCodeAt(i);
}
return messageArray;
}
/**
* compress a string (deflate compression), returns buffer
*
* @name CryptTool.compress
* @async
* @function
* @private
* @param {string} message
* @param {string} mode
* @param {object} zlib
* @throws {string}
* @return {ArrayBuffer} data
*/
async function compress(message, mode, zlib)
{
message = stringToArraybuffer(
utf16To8(message)
);
Eif (mode === 'zlib') {
Iif (typeof zlib === 'undefined') {
throw 'Error compressing paste, due to missing WebAssembly support.'
}
return zlib.deflate(message).buffer;
}
return message;
}
/**
* decompress potentially base64 encoded, deflate compressed buffer, returns string
*
* @name CryptTool.decompress
* @async
* @function
* @private
* @param {ArrayBuffer} data
* @param {string} mode
* @param {object} zlib
* @throws {string}
* @return {string} message
*/
async function decompress(data, mode, zlib)
{
if (mode === 'zlib' || mode === 'none') {
Eif (mode === 'zlib') {
Iif (typeof zlib === 'undefined') {
throw 'Error decompressing paste, your browser does not support WebAssembly. Please use another browser to view this paste.'
}
data = zlib.inflate(
new Uint8Array(data)
).buffer;
}
return utf8To16(
arraybufferToString(data)
);
}
// detect presence of Base64.js, indicating legacy ZeroBin paste
if (typeof Base64 === 'undefined') {
return utf8To16(
RawDeflate.inflate(
utf8To16(
atob(
arraybufferToString(data)
)
)
)
);
} else {
return Base64.btou(
RawDeflate.inflate(
Base64.fromBase64(
arraybufferToString(data)
)
)
);
}
}
/**
* returns specified number of random bytes
*
* @name CryptTool.getRandomBytes
* @function
* @private
* @param {int} length number of random bytes to fetch
* @throws {string}
* @return {string} random bytes
*/
function getRandomBytes(length)
{
let bytes = '';
const byteArray = new Uint8Array(length);
window.crypto.getRandomValues(byteArray);
for (let i = 0; i < length; ++i) {
bytes += String.fromCharCode(byteArray[i]);
}
return bytes;
}
/**
* derive cryptographic key from key string and password
*
* @name CryptTool.deriveKey
* @async
* @function
* @private
* @param {string} key
* @param {string} password
* @param {array} spec cryptographic specification
* @return {CryptoKey} derived key
*/
async function deriveKey(key, password, spec)
{
let keyArray = stringToArraybuffer(key);
if (password.length > 0) {
// version 1 pastes did append the passwords SHA-256 hash in hex
if (spec[7] === 'rawdeflate') {
let passwordBuffer = await window.crypto.subtle.digest(
{name: 'SHA-256'},
stringToArraybuffer(
utf16To8(password)
)
).catch(Alert.showError);
password = Array.prototype.map.call(
new Uint8Array(passwordBuffer),
x => ('00' + x.toString(16)).slice(-2)
).join('');
}
let passwordArray = stringToArraybuffer(password),
newKeyArray = new Uint8Array(keyArray.length + passwordArray.length);
newKeyArray.set(keyArray, 0);
newKeyArray.set(passwordArray, keyArray.length);
keyArray = newKeyArray;
}
// import raw key
const importedKey = await window.crypto.subtle.importKey(
'raw', // only 'raw' is allowed
keyArray,
{name: 'PBKDF2'}, // we use PBKDF2 for key derivation
false, // the key may not be exported
['deriveKey'] // we may only use it for key derivation
).catch(Alert.showError);
// derive a stronger key for use with AES
return window.crypto.subtle.deriveKey(
{
name: 'PBKDF2', // we use PBKDF2 for key derivation
salt: stringToArraybuffer(spec[1]), // salt used in HMAC
iterations: spec[2], // amount of iterations to apply
hash: {name: 'SHA-256'} // can be "SHA-1", "SHA-256", "SHA-384" or "SHA-512"
},
importedKey,
{
name: 'AES-' + spec[6].toUpperCase(), // can be any supported AES algorithm ("AES-CTR", "AES-CBC", "AES-CMAC", "AES-GCM", "AES-CFB", "AES-KW", "ECDH", "DH" or "HMAC")
length: spec[3] // can be 128, 192 or 256
},
false, // the key may not be exported
['encrypt', 'decrypt'] // we may only use it for en- and decryption
).catch(Alert.showError);
}
/**
* gets crypto settings from specification and authenticated data
*
* @name CryptTool.cryptoSettings
* @function
* @private
* @param {string} adata authenticated data
* @param {array} spec cryptographic specification
* @return {object} crypto settings
*/
function cryptoSettings(adata, spec)
{
return {
name: 'AES-' + spec[6].toUpperCase(), // can be any supported AES algorithm ("AES-CTR", "AES-CBC", "AES-CMAC", "AES-GCM", "AES-CFB", "AES-KW", "ECDH", "DH" or "HMAC")
iv: stringToArraybuffer(spec[0]), // the initialization vector you used to encrypt
additionalData: stringToArraybuffer(adata), // the addtional data you used during encryption (if any)
tagLength: spec[4] // the length of the tag you used to encrypt (if any)
};
}
/**
* compress, then encrypt message with given key and password
*
* @name CryptTool.cipher
* @async
* @function
* @param {string} key
* @param {string} password
* @param {string} message
* @param {array} adata
* @return {array} encrypted message in base64 encoding & adata containing encryption spec
*/
me.cipher = async function(key, password, message, adata)
{
let zlib = (await z);
// AES in Galois Counter Mode, keysize 256 bit,
// authentication tag 128 bit, 10000 iterations in key derivation
const compression = (
typeof zlib === 'undefined' ?
'none' : // client lacks support for WASM
($('body').data('compression') || 'zlib')
),
spec = [
getRandomBytes(16), // initialization vector
getRandomBytes(8), // salt
100000, // iterations
256, // key size
128, // tag size
'aes', // algorithm
'gcm', // algorithm mode
compression // compression
], encodedSpec = [];
for (let i = 0; i < spec.length; ++i) {
encodedSpec[i] = i < 2 ? btoa(spec[i]) : spec[i];
}
if (adata.length === 0) {
// comment
adata = encodedSpec;
} else Eif (adata[0] === null) {
// paste
adata[0] = encodedSpec;
}
// finally, encrypt message
return [
btoa(
arraybufferToString(
await window.crypto.subtle.encrypt(
cryptoSettings(JSON.stringify(adata), spec),
await deriveKey(key, password, spec),
await compress(message, compression, zlib)
).catch(Alert.showError)
)
),
adata
];
};
/**
* decrypt message with key, then decompress
*
* @name CryptTool.decipher
* @async
* @function
* @param {string} key
* @param {string} password
* @param {string|object} data encrypted message
* @return {string} decrypted message, empty if decryption failed
*/
me.decipher = async function(key, password, data)
{
let adataString, spec, cipherMessage, plaintext;
let zlib = (await z);
if (data instanceof Array) {
// version 2
adataString = JSON.stringify(data[1]);
// clone the array instead of passing the reference
spec = (data[1][0] instanceof Array ? data[1][0] : data[1]).slice();
cipherMessage = data[0];
} else Eif (typeof data === 'string') {
// version 1
let object = JSON.parse(data);
adataString = atob(object.adata);
spec = [
object.iv,
object.salt,
object.iter,
object.ks,
object.ts,
object.cipher,
object.mode,
'rawdeflate'
];
cipherMessage = object.ct;
} else {
throw 'unsupported message format';
}
spec[0] = atob(spec[0]);
spec[1] = atob(spec[1]);
if (spec[7] === 'zlib') {
Iif (typeof zlib === 'undefined') {
throw 'Error decompressing paste, your browser does not support WebAssembly. Please use another browser to view this paste.'
}
}
try {
plaintext = await window.crypto.subtle.decrypt(
cryptoSettings(adataString, spec),
await deriveKey(key, password, spec),
stringToArraybuffer(
atob(cipherMessage)
)
);
} catch(err) {
console.error(err);
return '';
}
try {
return await decompress(plaintext, spec[7], zlib);
} catch(err) {
Alert.showError(err);
return err;
}
};
/**
* returns a random symmetric key
*
* generates 256 bit long keys (8 Bits * 32) for AES with 256 bit long blocks
*
* @name CryptTool.getSymmetricKey
* @function
* @throws {string}
* @return {string} raw bytes
*/
me.getSymmetricKey = function()
{
return getRandomBytes(32);
};
/**
* base58 encode a DOMString (UTF-16)
*
* @name CryptTool.base58encode
* @function
* @param {string} input
* @return {string} output
*/
me.base58encode = function(input)
{
return base58.encode(
stringToArraybuffer(input)
);
}
/**
* base58 decode a DOMString (UTF-16)
*
* @name CryptTool.base58decode
* @function
* @param {string} input
* @return {string} output
*/
me.base58decode = function(input)
{
return arraybufferToString(
base58.decode(input)
);
}
return me;
})();
/**
* (Model) Data source (aka MVC)
*
* @name Model
* @class
*/
const Model = (function () {
const me = {};
let id = null,
pasteData = null,
symmetricKey = null,
$templates;
/**
* returns the expiration set in the HTML
*
* @name Model.getExpirationDefault
* @function
* @return string
*/
me.getExpirationDefault = function()
{
return $('#pasteExpiration').val();
};
/**
* returns the format set in the HTML
*
* @name Model.getFormatDefault
* @function
* @return string
*/
me.getFormatDefault = function()
{
return $('#pasteFormatter').val();
};
/**
* returns the paste data (including the cipher data)
*
* @name Model.getPasteData
* @function
* @param {function} callback (optional) Called when data is available
* @param {function} useCache (optional) Whether to use the cache or
* force a data reload. Default: true
* @return string
*/
me.getPasteData = function(callback, useCache)
{
// use cache if possible/allowed
if (useCache !== false && pasteData !== null) {
//execute callback
if (typeof callback === 'function') {
return callback(pasteData);
}
// alternatively just using inline
return pasteData;
}
// reload data
ServerInteraction.prepare();
ServerInteraction.setUrl(Helper.baseUri() + '?pasteid=' + me.getPasteId());
ServerInteraction.setFailure(function (status, data) {
// revert loading status…
Alert.hideLoading();
TopNav.showViewButtons();
// show error message
Alert.showError(ServerInteraction.parseUploadError(status, data, 'get paste data'));
});
ServerInteraction.setSuccess(function (status, data) {
pasteData = new Paste(data);
if (typeof callback === 'function') {
return callback(pasteData);
}
});
ServerInteraction.run();
};
/**
* get the pastes unique identifier from the URL,
* eg. https://example.com/path/?c05354954c49a487#dfdsdgdgdfgdf returns c05354954c49a487
*
* @name Model.getPasteId
* @function
* @return {string} unique identifier
* @throws {string}
*/
me.getPasteId = function()
{
const idRegEx = /^[a-z0-9]{16}$/;
// return cached value
Iif (id !== null) {
return id;
}
// do use URL interface, if possible
const url = new URL(window.location);
for (const param of url.searchParams) {
const key = param[0];
const value = param[1];
if (value === '' && idRegEx.test(key)) {
// safe, as the whole regex is matched
id = key;
return key;
}
}
Eif (id === null) {
throw 'no paste id given';
}
return id;
}
/**
* returns true, when the URL has a delete token and the current call was used for deleting a paste.
*
* @name Model.hasDeleteToken
* @function
* @return {bool}
*/
me.hasDeleteToken = function()
{
return window.location.search.indexOf('deletetoken') !== -1;
}
/**
* return the deciphering key stored in anchor part of the URL
*
* @name Model.getPasteKey
* @function
* @return {string|null} key
* @throws {string}
*/
me.getPasteKey = function()
{
Eif (symmetricKey === null) {
let startPos = 1;
Iif(window.location.hash.startsWith(loadConfirmPrefix)) {
startPos = loadConfirmPrefix.length;
}
let newKey = window.location.hash.substring(startPos);
// Some web 2.0 services and redirectors add data AFTER the anchor
// (such as &utm_source=...). We will strip any additional data.
let ampersandPos = newKey.indexOf('&');
if (ampersandPos > -1)
{
newKey = newKey.substring(0, ampersandPos);
}
if (newKey === '') {
throw 'no encryption key given';
}
// version 2 uses base58, version 1 uses base64 without decoding
try {
// base58 encode strips NULL bytes at the beginning of the
// string, so we re-add them if necessary
symmetricKey = CryptTool.base58decode(newKey).padStart(32, '\u0000');
} catch(e) {
symmetricKey = newKey;
}
}
return symmetricKey;
};
/**
* returns a jQuery copy of the HTML template
*
* @name Model.getTemplate
* @function
* @param {string} name - the name of the template
* @return {jQuery}
*/
me.getTemplate = function(name)
{
// find template
let $element = $templates.find('#' + name + 'template').clone(true);
// change ID to avoid collisions (one ID should really be unique)
return $element.prop('id', name);
};
/**
* resets state, used for unit testing
*
* @name Model.reset
* @function
*/
me.reset = function()
{
pasteData = $templates = id = symmetricKey = null;
};
/**
* init navigation manager
*
* preloads jQuery elements
*
* @name Model.init
* @function
*/
me.init = function()
{
$templates = $('#templates');
};
return me;
})();
/**
* Helper functions for user interface
*
* everything directly UI-related, which fits nowhere else
*
* @name UiHelper
* @class
*/
const UiHelper = (function () {
const me = {};
/**
* handle history (pop) state changes
*
* currently this does only handle redirects to the home page.
*
* @name UiHelper.historyChange
* @private
* @function
* @param {Event} event
*/
function historyChange(event)
{
let currentLocation = Helper.baseUri();
if (event.originalEvent.state === null && // no state object passed
event.target.location.href === currentLocation && // target location is home page
window.location.href === currentLocation // and we are not already on the home page
) {
// redirect to home page
window.location.href = currentLocation;
}
}
/**
* reload the page
*
* This takes the user to the PrivateBin homepage.
*
* @name UiHelper.reloadHome
* @function
*/
me.reloadHome = function()
{
window.location.href = Helper.baseUri();
};
/**
* checks whether the element is currently visible in the viewport (so
* the user can actually see it)
*
* @see {@link https://stackoverflow.com/a/40658647}
* @name UiHelper.isVisible
* @function
* @param {jQuery} $element The link hash to move to.
*/
me.isVisible = function($element)
{
let elementTop = $element.offset().top,
viewportTop = $(window).scrollTop(),
viewportBottom = viewportTop + $(window).height();
return elementTop > viewportTop && elementTop < viewportBottom;
};
/**
* scrolls to a specific element
*
* @see {@link https://stackoverflow.com/questions/4198041/jquery-smooth-scroll-to-an-anchor#answer-12714767}
* @name UiHelper.scrollTo
* @function
* @param {jQuery} $element The link hash to move to.
* @param {(number|string)} animationDuration passed to jQuery .animate, when set to 0 the animation is skipped
* @param {string} animationEffect passed to jQuery .animate
* @param {function} finishedCallback function to call after animation finished
*/
me.scrollTo = function($element, animationDuration, animationEffect, finishedCallback)
{
let $body = $('html, body'),
margin = 50,
callbackCalled = false,
dest = 0;
// calculate destination place
// if it would scroll out of the screen at the bottom only scroll it as
// far as the screen can go
Iif ($element.offset().top > $(document).height() - $(window).height()) {
dest = $(document).height() - $(window).height();
} else {
dest = $element.offset().top - margin;
}
// skip animation if duration is set to 0
Iif (animationDuration === 0) {
window.scrollTo(0, dest);
} else {
// stop previous animation
$body.stop();
// scroll to destination
$body.animate({
scrollTop: dest
}, animationDuration, animationEffect);
}
// as we have finished we can enable scrolling again
$body.queue(function (next) {
if (!callbackCalled) {
// call user function if needed
Eif (typeof finishedCallback !== 'undefined') {
finishedCallback();
}
// prevent calling this function twice
callbackCalled = true;
}
next();
});
};
/**
* trigger a history (pop) state change
*
* used to test the UiHelper.historyChange private function
*
* @name UiHelper.mockHistoryChange
* @function
* @param {string} state (optional) state to mock
*/
me.mockHistoryChange = function(state)
{
if (typeof state === 'undefined') {
state = null;
}
historyChange($.Event('popstate', {originalEvent: new PopStateEvent('popstate', {state: state}), target: window}));
};
/**
* initialize
*
* @name UiHelper.init
* @function
*/
me.init = function()
{
// update link to home page
$('.reloadlink').prop('href', Helper.baseUri());
$(window).on('popstate', historyChange);
};
return me;
})();
/**
* Alert/error manager
*
* @name Alert
* @class
*/
const Alert = (function () {
const me = {};
let $errorMessage,
$loadingIndicator,
$statusMessage,
$remainingTime,
currentIcon,
customHandler;
const alertType = [
'loading', // not in bootstrap CSS, but using a plausible value here
'info', // status icon
'warning', // warning icon
'danger' // error icon
];
/**
* forwards a request to the i18n module and shows the element
*
* @name Alert.handleNotification
* @private
* @function
* @param {int} id - id of notification
* @param {jQuery} $element - jQuery object
* @param {string|array} args
* @param {string|null} icon - optional, icon
*/
function handleNotification(id, $element, args, icon)
{
// basic parsing/conversion of parameters
if (typeof icon === 'undefined') {
icon = null;
}
Iif (typeof args === 'undefined') {
args = null;
} else if (typeof args === 'string') {
// convert string to array if needed
args = [args];
} else Iif (args instanceof Error) {
// extract message into array if needed
args = [args.message];
}
// pass to custom handler if defined
if (typeof customHandler === 'function') {
let handlerResult = customHandler(alertType[id], $element, args, icon);
if (handlerResult === true) {
// if it returns true, skip own handler
return;
}
Eif (handlerResult instanceof jQuery) {
// continue processing with new element
$element = handlerResult;
icon = null; // icons not supported in this case
}
}
let $translationTarget = $element;
// handle icon, if template uses one
const $glyphIcon = $element.find(':first');
if ($glyphIcon.length) {
// if there is an icon, we need to provide an inner element
// to translate the message into, instead of the parent
$translationTarget = $('<span>');
$element.html(' ').prepend($glyphIcon).append($translationTarget);
if (icon !== null && // icon was passed
icon !== currentIcon[id] // and it differs from current icon
) {
// remove (previous) icon
$glyphIcon.removeClass(currentIcon[id]);
// any other thing as a string (e.g. 'null') (only) removes the icon
Eif (typeof icon === 'string') {
// set new icon
currentIcon[id] = 'glyphicon-' + icon;
$glyphIcon.addClass(currentIcon[id]);
}
}
}
// show text
Eif (args !== null) {
// add jQuery object to it as first parameter
args.unshift($translationTarget);
// pass it to I18n
I18n._.apply(this, args);
}
// show notification
$element.removeClass('hidden');
}
/**
* display a status message
*
* This automatically passes the text to I18n for translation.
*
* @name Alert.showStatus
* @function
* @param {string|array} message string, use an array for %s/%d options
* @param {string|null} icon optional, the icon to show,
* default: leave previous icon
*/
me.showStatus = function(message, icon)
{
handleNotification(1, $statusMessage, message, icon);
};
/**
* display a warning message
*
* This automatically passes the text to I18n for translation.
*
* @name Alert.showWarning
* @function
* @param {string|array} message string, use an array for %s/%d options
* @param {string|null} icon optional, the icon to show, default:
* leave previous icon
*/
me.showWarning = function(message, icon)
{
$errorMessage.find(':first')
.removeClass(currentIcon[3])
.addClass(currentIcon[2]);
handleNotification(2, $errorMessage, message, icon);
};
/**
* display an error message
*
* This automatically passes the text to I18n for translation.
*
* @name Alert.showError
* @function
* @param {string|array} message string, use an array for %s/%d options
* @param {string|null} icon optional, the icon to show, default:
* leave previous icon
*/
me.showError = function(message, icon)
{
handleNotification(3, $errorMessage, message, icon);
};
/**
* display remaining message
*
* This automatically passes the text to I18n for translation.
*
* @name Alert.showRemaining
* @function
* @param {string|array} message string, use an array for %s/%d options
*/
me.showRemaining = function(message)
{
handleNotification(1, $remainingTime, message);
};
/**
* shows a loading message, optionally with a percentage
*
* This automatically passes all texts to the i10s module.
*
* @name Alert.showLoading
* @function
* @param {string|array|null} message optional, use an array for %s/%d options, default: 'Loading…'
* @param {string|null} icon optional, the icon to show, default: leave previous icon
*/
me.showLoading = function(message, icon)
{
// default message text
Iif (typeof message === 'undefined') {
message = 'Loading…';
}
handleNotification(0, $loadingIndicator, message, icon);
// show loading status (cursor)
$('body').addClass('loading');
};
/**
* hides the loading message
*
* @name Alert.hideLoading
* @function
*/
me.hideLoading = function()
{
$loadingIndicator.addClass('hidden');
// hide loading cursor
$('body').removeClass('loading');
};
/**
* hides any status/error messages
*
* This does not include the loading message.
*
* @name Alert.hideMessages
* @function
*/
me.hideMessages = function()
{
$statusMessage.addClass('hidden');
$errorMessage.addClass('hidden');
};
/**
* set a custom handler, which gets all notifications.
*
* This handler gets the following arguments:
* alertType (see array), $element, args, icon
* If it returns true, the own processing will be stopped so the message
* will not be displayed. Otherwise it will continue.
* As an aditional feature it can return q jQuery element, which will
* then be used to add the message there. Icons are not supported in
* that case and will be ignored.
* Pass 'null' to reset/delete the custom handler.
* Note that there is no notification when a message is supposed to get
* hidden.
*
* @name Alert.setCustomHandler
* @function
* @param {function|null} newHandler
*/
me.setCustomHandler = function(newHandler)
{
customHandler = newHandler;
};
/**
* init status manager
*
* preloads jQuery elements
*
* @name Alert.init
* @function
*/
me.init = function()
{
// hide "no javascript" error message
$('#noscript').hide();
// not a reset, but first set of the elements
$errorMessage = $('#errormessage');
$loadingIndicator = $('#loadingindicator');
$statusMessage = $('#status');
$remainingTime = $('#remainingtime');
currentIcon = [
'glyphicon-time', // loading icon
'glyphicon-info-sign', // status icon
'glyphicon-warning-sign', // warning icon
'glyphicon-alert' // error icon
];
};
return me;
})();
/**
* handles paste status/result
*
* @name PasteStatus
* @class
*/
const PasteStatus = (function () {
const me = {};
let $pasteSuccess,
$pasteUrl,
$remainingTime,
$shortenButton;
/**
* forward to URL shortener
*
* @name PasteStatus.sendToShortener
* @private
* @function
*/
function sendToShortener()
{
if ($shortenButton.hasClass('buttondisabled')) {
return;
}
$.ajax({
type: 'GET',
url: `${$shortenButton.data('shortener')}${encodeURIComponent($pasteUrl.attr('href'))}`,
headers: {'Accept': 'text/html, application/xhtml+xml, application/xml, application/json'},
processData: false,
timeout: 10000,
xhrFields: {
withCredentials: false
},
success: PasteStatus.extractUrl
})
.fail(function(data, textStatus, errorThrown) {
console.error(textStatus, errorThrown);
// we don't know why it failed, could be CORS of the external
// server not setup properly, in which case we follow old
// behavior to open it in new tab
window.open(
`${$shortenButton.data('shortener')}${encodeURIComponent($pasteUrl.attr('href'))}`,
'_blank',
'noopener, noreferrer'
);
});
}
/**
* Forces opening the paste if the link does not do this automatically.
*
* This is necessary as browsers will not reload the page when it is
* already loaded (which is fake as it is set via history.pushState()).
*
* @name PasteStatus.pasteLinkClick
* @function
*/
function pasteLinkClick()
{
// check if location is (already) shown in URL bar
if (window.location.href === $pasteUrl.attr('href')) {
// if so we need to load link by reloading the current site
window.location.reload(true);
}
}
/**
* creates a notification after a successfull paste upload
*
* @name PasteStatus.createPasteNotification
* @function
* @param {string} url
* @param {string} deleteUrl
*/
me.createPasteNotification = function(url, deleteUrl)
{
I18n._(
$('#pastelink'),
'Your paste is <a id="pasteurl" href="%s">%s</a> <span id="copyhint">(Hit [Ctrl]+[c] to copy)</span>',
url, url
);
// save newly created element
$pasteUrl = $('#pasteurl');
// and add click event
$pasteUrl.click(pasteLinkClick);
// delete link
$('#deletelink').html('<a href="' + deleteUrl + '"></a>');
I18n._($('#deletelink a').first(), 'Delete data');
// enable shortener button
$shortenButton.removeClass('buttondisabled');
// show result
$pasteSuccess.removeClass('hidden');
// we pre-select the link so that the user only has to [Ctrl]+[c] the link
Helper.selectText($pasteUrl[0]);
};
/**
* extracts URLs from given string
*
* if at least one is found, it disables the shortener button and
* replaces the paste URL
*
* @name PasteStatus.extractUrl
* @function
* @param {string} response
*/
me.extractUrl = function(response)
{
Iif (typeof response === 'object') {
response = JSON.stringify(response);
}
Eif (typeof response === 'string' && response.length > 0) {
const shortUrlMatcher = /https?:\/\/[^\s"<]+/g; // JSON API will have URL in quotes, XML in tags
const shortUrl = (response.match(shortUrlMatcher) || []).filter(function(urlRegExMatch) {
Iif (typeof URL.canParse === 'function') {
return URL.canParse(urlRegExMatch);
}
// polyfill for older browsers (< 120) & node (< 19.9 & < 18.17)
try {
return !!new URL(urlRegExMatch);
} catch (error) {
return false;
}
}).sort(function(a, b) {
return a.length - b.length; // shortest first
})[0];
Eif (typeof shortUrl === 'string' && shortUrl.length > 0) {
// we disable the button to avoid calling shortener again
$shortenButton.addClass('buttondisabled');
// update link
$pasteUrl.text(shortUrl);
$pasteUrl.prop('href', shortUrl);
// we pre-select the link so that the user only has to [Ctrl]+[c] the link
Helper.selectText($pasteUrl[0]);
return;
}
}
Alert.showError('Cannot parse response from URL shortener.');
};
/**
* shows the remaining time
*
* @name PasteStatus.showRemainingTime
* @function
* @param {Paste} paste
*/
me.showRemainingTime = function(paste)
{
if (paste.isBurnAfterReadingEnabled()) {
// display paste "for your eyes only" if it is deleted
// the paste has been deleted when the JSON with the ciphertext
// has been downloaded
Alert.showRemaining('FOR YOUR EYES ONLY. Don\'t close this window, this message can\'t be displayed again.');
$remainingTime.addClass('foryoureyesonly');
} else if (paste.getTimeToLive() > 0) {
// display paste expiration
let expiration = Helper.secondsToHuman(paste.getTimeToLive()),
expirationLabel = [
'This document will expire in %d ' + expiration[1] + '.',
'This document will expire in %d ' + expiration[1] + 's.'
];
Alert.showRemaining([expirationLabel, expiration[0]]);
$remainingTime.removeClass('foryoureyesonly');
} else {
// never expires
return;
}
// in the end, display notification
$remainingTime.removeClass('hidden');
};
/**
* hides the remaining time and successful upload notification
*
* @name PasteStatus.hideMessages
* @function
*/
me.hideMessages = function()
{
$remainingTime.addClass('hidden');
$pasteSuccess.addClass('hidden');
};
/**
* init status manager
*
* preloads jQuery elements
*
* @name PasteStatus.init
* @function
*/
me.init = function()
{
$pasteSuccess = $('#pastesuccess');
// $pasteUrl is saved in me.createPasteNotification() after creation
$remainingTime = $('#remainingtime');
$shortenButton = $('#shortenbutton');
// bind elements
$shortenButton.click(sendToShortener);
};
return me;
})();
/**
* password prompt
*
* @name Prompt
* @class
*/
const Prompt = (function () {
const me = {};
let $passwordDecrypt,
$passwordForm,
$passwordModal,
password = '';
/**
* submit a password in the modal dialog
*
* @name Prompt.submitPasswordModal
* @private
* @function
* @param {Event} event
*/
function submitPasswordModal(event)
{
event.preventDefault();
// get input
password = $passwordDecrypt.val();
// hide modal
$passwordModal.modal('hide');
PasteDecrypter.run();
}
/**
* Request users confirmation to load possibly burn after reading paste
*
* @name Prompt.requestLoadConfirmation
* @function
*/
me.requestLoadConfirmation = function()
{
const $loadconfirmmodal = $('#loadconfirmmodal');
if ($loadconfirmmodal.length > 0) {
const $loadconfirmOpenNow = $loadconfirmmodal.find('#loadconfirm-open-now');
$loadconfirmOpenNow.off('click.loadPaste');
$loadconfirmOpenNow.on('click.loadPaste', PasteDecrypter.run);
const $loadconfirmClose = $loadconfirmmodal.find('.close');
$loadconfirmClose.off('click.close');
$loadconfirmClose.on('click.close', Controller.newPaste);
$loadconfirmmodal.modal('show');
} else {
if (window.confirm(
I18n._('This secret message can only be displayed once. Would you like to see it now?')
)) {
PasteDecrypter.run();
} else {
Controller.newPaste();
}
}
}
/**
* ask the user for the password and set it
*
* @name Prompt.requestPassword
* @function
*/
me.requestPassword = function()
{
// show new bootstrap method (if available)
Eif ($passwordModal.length !== 0) {
$passwordModal.modal({
backdrop: 'static',
keyboard: false
});
$passwordModal.modal('show');
// focus password input
$passwordDecrypt.focus();
// then re-focus it, when modal causes it to loose focus again
setTimeout(function () {
$passwordDecrypt.focus();
}, 500);
return;
}
// fallback to old method for page template
password = prompt(I18n._('Please enter the password for this paste:'), '');
if (password === null) {
throw 'password prompt canceled';
}
if (password.length === 0) {
// recurse…
return me.requestPassword();
}
PasteDecrypter.run();
};
/**
* get the cached password
*
* If you do not get a password with this function
* (returns an empty string), use requestPassword.
*
* @name Prompt.getPassword
* @function
* @return {string}
*/
me.getPassword = function()
{
return password;
};
/**
* resets the password to an empty string
*
* @name Prompt.reset
* @function
*/
me.reset = function()
{
// reset internal
password = '';
// and also reset UI
$passwordDecrypt.val('');
}
/**
* init status manager
*
* preloads jQuery elements
*
* @name Prompt.init
* @function
*/
me.init = function()
{
$passwordDecrypt = $('#passworddecrypt');
$passwordForm = $('#passwordform');
$passwordModal = $('#passwordmodal');
// bind events - handle Model password submission
$passwordForm.submit(submitPasswordModal);
};
return me;
})();
/**
* Manage paste/message input, and preview tab
*
* Note that the actual preview is handled by PasteViewer.
*
* @name Editor
* @class
*/
const Editor = (function () {
const me = {};
let $editorTabs,
$messageEdit,
$messageEditParent,
$messagePreview,
$messagePreviewParent,
$message,
isPreview = false;
/**
* support input of tab character
*
* @name Editor.supportTabs
* @function
* @param {Event} event
* @this $message (but not used, so it is jQuery-free, possibly faster)
*/
function supportTabs(event)
{
const keyCode = event.keyCode || event.which;
// tab was pressed
if (keyCode === 9) {
// get caret position & selection
const 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;
// prevent the textarea to lose focus
event.preventDefault();
}
}
/**
* view the Editor tab
*
* @name Editor.viewEditor
* @function
* @param {Event} event - optional
*/
function viewEditor(event)
{
// toggle buttons
$messageEdit.addClass('active');
$messageEditParent.addClass('active');
$messagePreview.removeClass('active');
$messagePreviewParent.removeClass('active');
$messageEdit.attr('aria-selected','true');
$messagePreview.attr('aria-selected','false');
PasteViewer.hide();
// reshow input
$message.removeClass('hidden');
me.focusInput();
// finish
isPreview = false;
// prevent jumping of page to top
Eif (typeof event !== 'undefined') {
event.preventDefault();
}
}
/**
* view the preview tab
*
* @name Editor.viewPreview
* @function
* @param {Event} event
*/
function viewPreview(event)
{
// toggle buttons
$messageEdit.removeClass('active');
$messageEditParent.removeClass('active');
$messagePreview.addClass('active');
$messagePreviewParent.addClass('active');
$messageEdit.attr('aria-selected','false');
$messagePreview.attr('aria-selected','true');
// hide input as now preview is shown
$message.addClass('hidden');
// show preview
PasteViewer.setText($message.val());
Eif (AttachmentViewer.hasAttachmentData()) {
const attachment = AttachmentViewer.getAttachment();
AttachmentViewer.handleBlobAttachmentPreview(
AttachmentViewer.getAttachmentPreview(),
attachment[0], attachment[1]
);
}
PasteViewer.run();
// finish
isPreview = true;
// prevent jumping of page to top
Eif (typeof event !== 'undefined') {
event.preventDefault();
}
}
/**
* get the state of the preview
*
* @name Editor.isPreview
* @function
*/
me.isPreview = function()
{
return isPreview;
};
/**
* reset the Editor view
*
* @name Editor.resetInput
* @function
*/
me.resetInput = function()
{
// go back to input
if (isPreview) {
viewEditor();
}
// clear content
$message.val('');
};
/**
* shows the Editor
*
* @name Editor.show
* @function
*/
me.show = function()
{
$message.removeClass('hidden');
$editorTabs.removeClass('hidden');
};
/**
* hides the Editor
*
* @name Editor.hide
* @function
*/
me.hide = function()
{
$message.addClass('hidden');
$editorTabs.addClass('hidden');
};
/**
* focuses the message input
*
* @name Editor.focusInput
* @function
*/
me.focusInput = function()
{
$message.focus();
};
/**
* sets a new text
*
* @name Editor.setText
* @function
* @param {string} newText
*/
me.setText = function(newText)
{
$message.val(newText);
};
/**
* returns the current text
*
* @name Editor.getText
* @function
* @return {string}
*/
me.getText = function()
{
return $message.val();
};
/**
* init status manager
*
* preloads jQuery elements
*
* @name Editor.init
* @function
*/
me.init = function()
{
$editorTabs = $('#editorTabs');
$message = $('#message');
// bind events
$message.keydown(supportTabs);
// bind click events to tab switchers (a), and save parents (li)
$messageEdit = $('#messageedit').click(viewEditor);
$messageEditParent = $messageEdit.parent();
$messagePreview = $('#messagepreview').click(viewPreview);
$messagePreviewParent = $messagePreview.parent();
};
return me;
})();
/**
* (view) Parse and show paste.
*
* @name PasteViewer
* @class
*/
const PasteViewer = (function () {
const me = {};
let $placeholder,
$prettyMessage,
$prettyPrint,
$plainText,
text,
format = 'plaintext',
isDisplayed = false,
isChanged = true; // by default true as nothing was parsed yet
/**
* apply the set format on paste and displays it
*
* @name PasteViewer.parsePaste
* @private
* @function
*/
function parsePaste()
{
// skip parsing if no text is given
if (text === '') {
return;
}
if (format === 'markdown') {
const converter = new showdown.Converter({
strikethrough: true,
tables: true,
tablesHeaderId: true,
simplifiedAutoLink: true,
excludeTrailingPunctuationFromURLs: true
});
// let showdown convert the HTML and sanitize HTML *afterwards*!
$plainText.html(
DOMPurify.sanitize(
converter.makeHtml(text),
purifyHtmlConfig
)
);
// add table classes from bootstrap css
$plainText.find('table').addClass('table-condensed table-bordered');
} else {
if (format === 'syntaxhighlighting') {
// yes, this is really needed to initialize the environment
Eif (typeof prettyPrint === 'function')
{
prettyPrint();
}
$prettyPrint.html(
prettyPrintOne(
Helper.htmlEntities(text), null, true
)
);
} else {
// = 'plaintext'
$prettyPrint.text(text);
}
Helper.urls2links($prettyPrint);
$prettyPrint.css('white-space', 'pre-wrap');
$prettyPrint.css('word-break', 'normal');
$prettyPrint.removeClass('prettyprint');
}
}
/**
* displays the paste
*
* @name PasteViewer.showPaste
* @private
* @function
*/
function showPaste()
{
// instead of "nothing" better display a placeholder
if (text === '') {
$placeholder.removeClass('hidden');
return;
}
// otherwise hide the placeholder
$placeholder.addClass('hidden');
if (format === 'markdown') {
$plainText.removeClass('hidden');
$prettyMessage.addClass('hidden');
} else {
$plainText.addClass('hidden');
$prettyMessage.removeClass('hidden');
}
}
/**
* sets the format in which the text is shown
*
* @name PasteViewer.setFormat
* @function
* @param {string} newFormat the new format
*/
me.setFormat = function(newFormat)
{
// skip if there is no update
if (format === newFormat) {
return;
}
// needs to update display too, if we switch from or to Markdown
if (format === 'markdown' || newFormat === 'markdown') {
isDisplayed = false;
}
format = newFormat;
isChanged = true;
// update preview
Iif (Editor.isPreview()) {
PasteViewer.run();
}
};
/**
* returns the current format
*
* @name PasteViewer.getFormat
* @function
* @return {string}
*/
me.getFormat = function()
{
return format;
};
/**
* returns whether the current view is pretty printed
*
* @name PasteViewer.isPrettyPrinted
* @function
* @return {bool}
*/
me.isPrettyPrinted = function()
{
return $prettyPrint.hasClass('prettyprinted');
};
/**
* sets the text to show
*
* @name PasteViewer.setText
* @function
* @param {string} newText the text to show
*/
me.setText = function(newText)
{
if (text !== newText) {
text = newText;
isChanged = true;
}
};
/**
* gets the current cached text
*
* @name PasteViewer.getText
* @function
* @return {string}
*/
me.getText = function()
{
return text;
};
/**
* show/update the parsed text (preview)
*
* @name PasteViewer.run
* @function
*/
me.run = function()
{
if (isChanged) {
parsePaste();
isChanged = false;
}
Eif (!isDisplayed) {
showPaste();
isDisplayed = true;
}
};
/**
* hide parsed text (preview)
*
* @name PasteViewer.hide
* @function
*/
me.hide = function()
{
Iif (!isDisplayed) {
return;
}
$plainText.addClass('hidden');
$prettyMessage.addClass('hidden');
$placeholder.addClass('hidden');
AttachmentViewer.hideAttachmentPreview();
isDisplayed = false;
};
/**
* init status manager
*
* preloads jQuery elements
*
* @name PasteViewer.init
* @function
*/
me.init = function()
{
$placeholder = $('#placeholder');
$plainText = $('#plaintext');
$prettyMessage = $('#prettymessage');
$prettyPrint = $('#prettyprint');
// get default option from template/HTML or fall back to set value
format = Model.getFormatDefault() || format;
text = '';
isDisplayed = false;
isChanged = true;
};
return me;
})();
/**
* (view) Show attachment and preview if possible
*
* @name AttachmentViewer
* @class
*/
const AttachmentViewer = (function () {
const me = {};
let $attachmentLink,
$attachmentPreview,
$attachment,
attachmentData,
file,
$fileInput,
$dragAndDropFileName,
attachmentHasPreview = false,
$dropzone;
/**
* get blob URL from string data and mime type
*
* @name AttachmentViewer.getBlobUrl
* @private
* @function
* @param {string} data - raw data of attachment
* @param {string} data - mime type of attachment
* @return {string} objectURL
*/
function getBlobUrl(data, mimeType)
{
// Transform into a Blob
const buf = new Uint8Array(data.length);
for (let i = 0; i < data.length; ++i) {
buf[i] = data.charCodeAt(i);
}
const blob = new window.Blob(
[buf],
{
type: mimeType
}
);
// Get blob URL
return window.URL.createObjectURL(blob);
}
/**
* sets the attachment but does not yet show it
*
* @name AttachmentViewer.setAttachment
* @function
* @param {string} attachmentData - base64-encoded data of file
* @param {string} fileName - optional, file name
*/
me.setAttachment = function(attachmentData, fileName)
{
// skip, if attachments got disabled
Iif (!$attachmentLink || !$attachmentPreview) return;
// data URI format: data:[<mimeType>][;base64],<data>
// position in data URI string of where data begins
const base64Start = attachmentData.indexOf(',') + 1;
// position in data URI string of where mimeType ends
const mimeTypeEnd = attachmentData.indexOf(';');
// extract mimeType
const mimeType = attachmentData.substring(5, mimeTypeEnd);
// extract data and convert to binary
const rawData = attachmentData.substring(base64Start);
const decodedData = rawData.length > 0 ? atob(rawData) : '';
let blobUrl = getBlobUrl(decodedData, mimeType);
$attachmentLink.attr('href', blobUrl);
if (typeof fileName !== 'undefined') {
$attachmentLink.attr('download', fileName);
}
// sanitize SVG preview
// prevents executing embedded scripts when CSP is not set and user
// right-clicks/long-taps and opens the SVG in a new tab - prevented
// in the preview by use of an img tag, which disables scripts, too
Iif (mimeType.match(/^image\/.*svg/i)) {
const sanitizedData = DOMPurify.sanitize(
decodedData,
purifySvgConfig
);
blobUrl = getBlobUrl(sanitizedData, mimeType);
}
me.handleBlobAttachmentPreview($attachmentPreview, blobUrl, mimeType);
};
/**
* displays the attachment
*
* @name AttachmentViewer.showAttachment
* @function
*/
me.showAttachment = function()
{
// skip, if attachments got disabled
Iif (!$attachment || !$attachmentPreview) return;
$attachment.removeClass('hidden');
if (attachmentHasPreview) {
$attachmentPreview.removeClass('hidden');
}
};
/**
* removes the attachment
*
* This automatically hides the attachment containers too, to
* prevent an inconsistent display.
*
* @name AttachmentViewer.removeAttachment
* @function
*/
me.removeAttachment = function()
{
Iif (!$attachment.length) {
return;
}
me.hideAttachment();
me.hideAttachmentPreview();
$attachmentLink.removeAttr('href');
$attachmentLink.removeAttr('download');
$attachmentLink.off('click');
$attachmentPreview.html('');
$dragAndDropFileName.text('');
AttachmentViewer.removeAttachmentData();
};
/**
* removes the attachment data
*
* This removes the data, which would be uploaded otherwise.
*
* @name AttachmentViewer.removeAttachmentData
* @function
*/
me.removeAttachmentData = function()
{
file = undefined;
attachmentData = undefined;
};
/**
* Cleares the drag & drop data.
*
* @name AttachmentViewer.clearDragAndDrop
* @function
*/
me.clearDragAndDrop = function()
{
$dragAndDropFileName.text('');
};
/**
* hides the attachment
*
* This will not hide the preview (see AttachmentViewer.hideAttachmentPreview
* for that) nor will it hide the attachment link if it was moved somewhere
* else (see AttachmentViewer.moveAttachmentTo).
*
* @name AttachmentViewer.hideAttachment
* @function
*/
me.hideAttachment = function()
{
$attachment.addClass('hidden');
};
/**
* hides the attachment preview
*
* @name AttachmentViewer.hideAttachmentPreview
* @function
*/
me.hideAttachmentPreview = function()
{
Eif ($attachmentPreview) {
$attachmentPreview.addClass('hidden');
}
};
/**
* checks if there is an attachment displayed
*
* @name AttachmentViewer.hasAttachment
* @function
*/
me.hasAttachment = function()
{
Iif (!$attachment.length) {
return false;
}
const link = $attachmentLink.prop('href');
return (typeof link !== 'undefined' && link !== '');
};
/**
* checks if there is attachment data (for preview!) available
*
* It returns true, when there is data that needs to be encrypted.
*
* @name AttachmentViewer.hasAttachmentData
* @function
*/
me.hasAttachmentData = function()
{
Eif ($attachment.length) {
return true;
}
return false;
};
/**
* return the attachment
*
* @name AttachmentViewer.getAttachment
* @function
* @returns {array}
*/
me.getAttachment = function()
{
return [
$attachmentLink.prop('href'),
$attachmentLink.prop('download')
];
};
/**
* moves the attachment link to another element
*
* It is advisable to hide the attachment afterwards (AttachmentViewer.hideAttachment)
*
* @name AttachmentViewer.moveAttachmentTo
* @function
* @param {jQuery} $element - the wrapper/container element where this should be moved to
* @param {string} label - the text to show (%s will be replaced with the file name), will automatically be translated
*/
me.moveAttachmentTo = function($element, label)
{
// move elemement to new place
$attachmentLink.appendTo($element);
// update text - ensuring no HTML is inserted into the text node
I18n._($attachmentLink, label, $attachmentLink.attr('download'));
};
/**
* read file data as data URL using the FileReader API
*
* @name AttachmentViewer.readFileData
* @private
* @function
* @param {object} loadedFile (optional) loaded file object
* @see {@link https://developer.mozilla.org/en-US/docs/Web/API/FileReader#readAsDataURL()}
*/
function readFileData(loadedFile) {
if (typeof FileReader === 'undefined') {
// revert loading status…
me.hideAttachment();
me.hideAttachmentPreview();
Alert.showWarning('Your browser does not support uploading encrypted files. Please use a newer browser.');
return;
}
const fileReader = new FileReader();
if (loadedFile === undefined) {
loadedFile = $fileInput[0].files[0];
$dragAndDropFileName.text('');
} else {
$dragAndDropFileName.text(loadedFile.name);
}
if (typeof loadedFile !== 'undefined') {
file = loadedFile;
fileReader.onload = function (event) {
const dataURL = event.target.result;
attachmentData = dataURL;
if (Editor.isPreview()) {
me.handleAttachmentPreview($attachmentPreview, dataURL);
$attachmentPreview.removeClass('hidden');
}
TopNav.highlightFileupload();
};
fileReader.readAsDataURL(loadedFile);
} else {
me.removeAttachmentData();
}
}
/**
* handle the preview of files decoded to blob that can either be an image, video, audio or pdf element
*
* @name AttachmentViewer.handleBlobAttachmentPreview
* @function
* @argument {jQuery} $targetElement element where the preview should be appended
* @argument {string} file as a blob URL
* @argument {string} mime type
*/
me.handleBlobAttachmentPreview = function ($targetElement, blobUrl, mimeType) {
if (blobUrl) {
attachmentHasPreview = true;
if (mimeType.match(/^image\//i)) {
$targetElement.html(
$(document.createElement('img'))
.attr('src', blobUrl)
.attr('class', 'img-thumbnail')
);
} else if (mimeType.match(/^video\//i)) {
$targetElement.html(
$(document.createElement('video'))
.attr('controls', 'true')
.attr('autoplay', 'true')
.attr('class', 'img-thumbnail')
.append($(document.createElement('source'))
.attr('type', mimeType)
.attr('src', blobUrl))
);
} else if (mimeType.match(/^audio\//i)) {
$targetElement.html(
$(document.createElement('audio'))
.attr('controls', 'true')
.attr('autoplay', 'true')
.append($(document.createElement('source'))
.attr('type', mimeType)
.attr('src', blobUrl))
);
} else Iif (mimeType.match(/\/pdf/i)) {
// Fallback for browsers, that don't support the vh unit
const clientHeight = $(window).height();
$targetElement.html(
$(document.createElement('embed'))
.attr('src', blobUrl)
.attr('type', 'application/pdf')
.attr('class', 'pdfPreview')
.css('height', clientHeight)
);
} else {
attachmentHasPreview = false;
}
}
};
/**
* attaches the file attachment drag & drop handler to the page
*
* @name AttachmentViewer.addDragDropHandler
* @private
* @function
*/
function addDragDropHandler() {
Eif (typeof $fileInput === 'undefined' || $fileInput.length === 0) {
return;
}
const handleDragEnterOrOver = function(event) {
event.stopPropagation();
event.preventDefault();
return false;
};
const handleDrop = function(event) {
const evt = event.originalEvent;
evt.stopPropagation();
evt.preventDefault();
if (TopNav.isAttachmentReadonly()) {
return false;
}
if ($fileInput) {
const file = evt.dataTransfer.files[0];
//Clear the file input:
$fileInput.wrap('<form>').closest('form').get(0).reset();
$fileInput.unwrap();
//Only works in Chrome:
//fileInput[0].files = e.dataTransfer.files;
readFileData(file);
}
};
$(document).draghover().on({
'draghoverstart': function(e) {
if (TopNav.isAttachmentReadonly()) {
e.stopPropagation();
e.preventDefault();
return false;
}
// show dropzone to indicate drop support
$dropzone.removeClass('hidden');
},
'draghoverend': function() {
$dropzone.addClass('hidden');
}
});
$(document).on('drop', handleDrop);
$(document).on('dragenter dragover', handleDragEnterOrOver);
$fileInput.on('change', function () {
readFileData();
});
}
/**
* attaches the clipboard attachment handler to the page
*
* @name AttachmentViewer.addClipboardEventHandler
* @private
* @function
*/
function addClipboardEventHandler() {
$(document).on('paste', function (event) {
const items = (event.clipboardData || event.originalEvent.clipboardData).items;
const lastItem = items[items.length - 1];
if (lastItem.kind === 'file') {
if (TopNav.isAttachmentReadonly()) {
event.stopPropagation();
event.preventDefault();
return false;
} else {
readFileData(lastItem.getAsFile());
}
}
});
}
/**
* getter for attachment data
*
* @name AttachmentViewer.getAttachmentData
* @function
* @return {jQuery}
*/
me.getAttachmentData = function () {
return attachmentData;
};
/**
* getter for attachment link
*
* @name AttachmentViewer.getAttachmentLink
* @function
* @return {jQuery}
*/
me.getAttachmentLink = function () {
return $attachmentLink;
};
/**
* getter for attachment preview
*
* @name AttachmentViewer.getAttachmentPreview
* @function
* @return {jQuery}
*/
me.getAttachmentPreview = function () {
return $attachmentPreview;
};
/**
* getter for file data, returns the file contents
*
* @name AttachmentViewer.getFile
* @function
* @return {string}
*/
me.getFile = function () {
return file;
};
/**
* initiate
*
* preloads jQuery elements
*
* @name AttachmentViewer.init
* @function
*/
me.init = function()
{
$attachment = $('#attachment');
$dragAndDropFileName = $('#dragAndDropFileName');
$dropzone = $('#dropzone');
$attachmentLink = $('#attachment a') || $('<a>');
if($attachment.length) {
$attachmentPreview = $('#attachmentPreview');
$fileInput = $('#file');
addDragDropHandler();
addClipboardEventHandler();
}
}
return me;
})();
/**
* (view) Shows discussion thread and handles replies
*
* @name DiscussionViewer
* @class
*/
const DiscussionViewer = (function () {
const me = {};
let $commentTail,
$discussion,
$reply,
$replyMessage,
$replyNickname,
$replyStatus,
$commentContainer,
replyCommentId;
/**
* initializes the templates
*
* @name DiscussionViewer.initTemplates
* @private
* @function
*/
function initTemplates()
{
$reply = Model.getTemplate('reply');
$replyMessage = $reply.find('#replymessage');
$replyNickname = $reply.find('#nickname');
$replyStatus = $reply.find('#replystatus');
// cache jQuery elements
$commentTail = Model.getTemplate('commenttail');
}
/**
* open the comment entry when clicking the "Reply" button of a comment
*
* @name DiscussionViewer.openReply
* @private
* @function
* @param {Event} event
*/
function openReply(event)
{
const $source = $(event.target);
// clear input
$replyMessage.val('');
$replyNickname.val('');
// get comment id from source element
replyCommentId = $source.parent().prop('id').split('_')[1];
// move to correct position
$source.after($reply);
// show
$reply.removeClass('hidden');
$replyMessage.focus();
event.preventDefault();
}
/**
* custom handler for displaying notifications in own status message area
*
* @name DiscussionViewer.handleNotification
* @function
* @param {string} alertType
* @return {bool|jQuery}
*/
me.handleNotification = function(alertType)
{
// ignore loading messages
if (alertType === 'loading') {
return false;
}
if (alertType === 'danger') {
$replyStatus.removeClass('alert-info');
$replyStatus.addClass('alert-danger');
$replyStatus.find(':first').removeClass('glyphicon-alert');
$replyStatus.find(':first').addClass('glyphicon-info-sign');
} else {
$replyStatus.removeClass('alert-danger');
$replyStatus.addClass('alert-info');
$replyStatus.find(':first').removeClass('glyphicon-info-sign');
$replyStatus.find(':first').addClass('glyphicon-alert');
}
return $replyStatus;
};
/**
* adds another comment
*
* @name DiscussionViewer.addComment
* @function
* @param {Comment} comment
* @param {string} commentText
* @param {string} nickname
*/
me.addComment = function(comment, commentText, nickname)
{
if (commentText === '') {
commentText = 'comment decryption failed';
}
// create new comment based on template
const $commentEntry = Model.getTemplate('comment');
$commentEntry.prop('id', 'comment_' + comment.id);
const $commentEntryData = $commentEntry.find('div.commentdata');
// set & parse text
$commentEntryData.text(commentText);
Helper.urls2links($commentEntryData);
// set nickname
if (nickname.length > 0) {
$commentEntry.find('span.nickname').text(nickname);
} else {
$commentEntry.find('span.nickname').html('<i></i>');
I18n._($commentEntry.find('span.nickname i'), 'Anonymous');
}
// set date
const created = comment.getCreated();
const commentDate = created == 0 ? '' : ' (' + (new Date(created * 1000).toLocaleString()) + ')';
$commentEntry.find('span.commentdate')
.text(commentDate)
.attr('title', 'CommentID: ' + comment.id);
// if an avatar is available, display it
const icon = comment.getIcon();
if (icon) {
$commentEntry.find('span.nickname')
.before(
'<img src="' + icon + '" class="vizhash" /> '
);
$(document).on('languageLoaded', function () {
$commentEntry.find('img.vizhash')
.prop('title', I18n._('Avatar generated from IP address'));
});
}
// starting point (default value/fallback)
let $place = $commentContainer;
// if parent comment exists
const $parentComment = $('#comment_' + comment.parentid);
if ($parentComment.length) {
// use parent as position for new comment, so it is shifted
// to the right
$place = $parentComment;
}
// finally append comment
$place.append($commentEntry);
};
/**
* finishes the discussion area after last comment
*
* @name DiscussionViewer.finishDiscussion
* @function
*/
me.finishDiscussion = function()
{
// add 'add new comment' area
$commentContainer.append($commentTail);
// show discussions
$discussion.removeClass('hidden');
};
/**
* removes the old discussion and prepares everything for creating a new
* one.
*
* @name DiscussionViewer.prepareNewDiscussion
* @function
*/
me.prepareNewDiscussion = function()
{
$commentContainer.html('');
$discussion.addClass('hidden');
// (re-)init templates
initTemplates();
};
/**
* returns the users message from the reply form
*
* @name DiscussionViewer.getReplyMessage
* @function
* @return {String}
*/
me.getReplyMessage = function()
{
return $replyMessage.val();
};
/**
* returns the users nickname (if any) from the reply form
*
* @name DiscussionViewer.getReplyNickname
* @function
* @return {String}
*/
me.getReplyNickname = function()
{
return $replyNickname.val();
};
/**
* returns the id of the parent comment the user is replying to
*
* @name DiscussionViewer.getReplyCommentId
* @function
* @return {int|undefined}
*/
me.getReplyCommentId = function()
{
return replyCommentId;
};
/**
* highlights a specific comment and scrolls to it if necessary
*
* @name DiscussionViewer.highlightComment
* @function
* @param {string} commentId
* @param {bool} fadeOut - whether to fade out the comment
*/
me.highlightComment = function(commentId, fadeOut)
{
const $comment = $('#comment_' + commentId);
// in case comment does not exist, cancel
Iif ($comment.length === 0) {
return;
}
$comment.addClass('highlight');
const highlightComment = function () {
if (fadeOut === true) {
setTimeout(function () {
$comment.removeClass('highlight');
}, 300);
}
};
Iif (UiHelper.isVisible($comment)) {
return highlightComment();
}
UiHelper.scrollTo($comment, 100, 'swing', highlightComment);
};
/**
* initiate
*
* preloads jQuery elements
*
* @name DiscussionViewer.init
* @function
*/
me.init = function()
{
// bind events to templates (so they are later cloned)
$('#commenttailtemplate, #commenttemplate').find('button').on('click', openReply);
$('#replytemplate').find('button').on('click', PasteEncrypter.sendComment);
$commentContainer = $('#commentcontainer');
$discussion = $('#discussion');
};
return me;
})();
/**
* Manage top (navigation) bar
*
* @name TopNav
* @param {object} window
* @param {object} document
* @class
*/
const TopNav = (function (window, document) {
const me = {};
let createButtonsDisplayed = false,
viewButtonsDisplayed = false,
burnAfterReadingDefault = false,
openDiscussionDefault = false,
$attach,
$burnAfterReading,
$burnAfterReadingOption,
$cloneButton,
$customAttachment,
$expiration,
$fileRemoveButton,
$fileWrap,
$formatter,
$newButton,
$openDiscussion,
$openDiscussionOption,
$password,
$passwordInput,
$rawTextButton,
$downloadTextButton,
$qrCodeLink,
$emailLink,
$sendButton,
$retryButton,
pasteExpiration = null,
retryButtonCallback;
/**
* set the expiration on bootstrap templates in dropdown
*
* @name TopNav.updateExpiration
* @private
* @function
* @param {Event} event
*/
function updateExpiration(event)
{
// get selected option
const target = $(event.target);
// update dropdown display and save new expiration time
$('#pasteExpirationDisplay').text(target.text());
pasteExpiration = target.data('expiration');
event.preventDefault();
}
/**
* set the format on bootstrap templates in dropdown from user interaction
*
* @name TopNav.updateFormat
* @private
* @function
* @param {Event} event
*/
function updateFormat(event)
{
// get selected option
const $target = $(event.target);
// update dropdown display and save new format
const newFormat = $target.data('format');
$('#pasteFormatterDisplay').text($target.text());
PasteViewer.setFormat(newFormat);
event.preventDefault();
}
/**
* when "burn after reading" is checked, disable discussion
*
* @name TopNav.changeBurnAfterReading
* @private
* @function
*/
function changeBurnAfterReading()
{
if (me.getBurnAfterReading()) {
$openDiscussionOption.addClass('buttondisabled');
$openDiscussion.prop('checked', false);
// if button is actually disabled, force-enable it and uncheck other button
$burnAfterReadingOption.removeClass('buttondisabled');
} else {
$openDiscussionOption.removeClass('buttondisabled');
}
}
/**
* when discussion is checked, disable "burn after reading"
*
* @name TopNav.changeOpenDiscussion
* @private
* @function
*/
function changeOpenDiscussion()
{
if (me.getOpenDiscussion()) {
$burnAfterReadingOption.addClass('buttondisabled');
$burnAfterReading.prop('checked', false);
// if button is actually disabled, force-enable it and uncheck other button
$openDiscussionOption.removeClass('buttondisabled');
} else {
$burnAfterReadingOption.removeClass('buttondisabled');
}
}
/**
* Clear the password input in the top navigation
*
* @name TopNav.clearPasswordInput
* @function
*/
function clearPasswordInput()
{
$passwordInput.val('');
}
/**
* Clear the attachment input in the top navigation.
*
* @name TopNav.clearAttachmentInput
* @function
*/
function clearAttachmentInput()
{
// hide UI for selected files
// our up-to-date jQuery can handle it :)
$fileWrap.find('input').val('');
}
/**
* return raw text
*
* @name TopNav.rawText
* @private
* @function
*/
function rawText()
{
TopNav.hideAllButtons();
Alert.showLoading('Showing raw text…', 'time');
let paste = PasteViewer.getText();
// push a new state to allow back navigation with browser back button
history.pushState(
{type: 'raw'},
document.title,
// recreate paste URL
Helper.baseUri() + '?' + Model.getPasteId() + '#' +
CryptTool.base58encode(Model.getPasteKey())
);
// we use text/html instead of text/plain to avoid a bug when
// reloading the raw text view (it reverts to type text/html)
const $head = $('head').children().not('noscript, script, link[type="text/css"]'),
newDoc = document.open('text/html', 'replace');
newDoc.write('<!DOCTYPE html><html><head>');
for (let i = 0; i < $head.length; ++i) {
newDoc.write($head[i].outerHTML);
}
newDoc.write(
'</head><body><pre>' +
DOMPurify.sanitize(
Helper.htmlEntities(paste),
purifyHtmlConfig
) +
'</pre></body></html>'
);
newDoc.close();
}
/**
* download text
*
* @name TopNav.downloadText
* @private
* @function
*/
function downloadText()
{
var fileFormat = PasteViewer.getFormat() === 'markdown' ? '.md' : '.txt';
var filename='paste-' + Model.getPasteId() + fileFormat;
var text = PasteViewer.getText();
var element = document.createElement('a');
element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
}
/**
* saves the language in a cookie and reloads the page
*
* @name TopNav.setLanguage
* @private
* @function
* @param {Event} event
*/
function setLanguage(event)
{
document.cookie = 'lang=' + $(event.target).data('lang') + '; SameSite=Lax; Secure';
UiHelper.reloadHome();
event.preventDefault();
}
/**
* hides all messages and creates a new paste
*
* @name TopNav.clickNewPaste
* @private
* @function
*/
function clickNewPaste()
{
Controller.hideStatusMessages();
Controller.newPaste();
}
/**
* retrys some callback registered before
*
* @name TopNav.clickRetryButton
* @private
* @function
* @param {Event} event
*/
function clickRetryButton(event)
{
retryButtonCallback(event);
}
/**
* removes the existing attachment
*
* @name TopNav.removeAttachment
* @private
* @function
* @param {Event} event
*/
function removeAttachment(event)
{
// if custom attachment is used, remove it first
if (!$customAttachment.hasClass('hidden')) {
AttachmentViewer.removeAttachment();
$customAttachment.addClass('hidden');
$fileWrap.removeClass('hidden');
}
// in any case, remove saved attachment data
AttachmentViewer.removeAttachmentData();
clearAttachmentInput();
AttachmentViewer.clearDragAndDrop();
// pevent '#' from appearing in the URL
event.preventDefault();
}
/**
* Shows the QR code of the current paste (URL).
*
* @name TopNav.displayQrCode
* @private
* @function
*/
function displayQrCode()
{
const qrCanvas = kjua({
render: 'canvas',
text: window.location.href
});
$('#qrcode-display').html(qrCanvas);
// only necessary for bootstrap 5, other templates won't have this
if (bootstrap.Tooltip.VERSION) {
$('#qrcodemodal').modal('show');
}
}
/**
* Template Email body.
*
* @name TopNav.templateEmailBody
* @private
* @param {string} expirationDateString
* @param {bool} isBurnafterreading
*/
function templateEmailBody(expirationDateString, isBurnafterreading)
{
const EOL = '\n';
const BULLET = ' - ';
let emailBody = '';
if (expirationDateString !== null || isBurnafterreading) {
emailBody += I18n._('Notice:');
emailBody += EOL;
if (expirationDateString !== null) {
emailBody += EOL;
emailBody += BULLET;
// avoid DOMPurify mess with forward slash in expirationDateString
emailBody += Helper.sprintf(
I18n._(
'This link will expire after %s.',
'%s'
),
expirationDateString
);
}
if (isBurnafterreading) {
emailBody += EOL;
emailBody += BULLET;
emailBody += I18n._(
'This link can only be accessed once, do not use back or refresh button in your browser.'
);
}
emailBody += EOL;
emailBody += EOL;
}
emailBody += I18n._('Link:');
emailBody += EOL;
emailBody += $('#pasteurl').attr('href') || window.location.href; // href is tried first as it might have been shortened
return emailBody;
}
/**
* Trigger Email send.
*
* @name TopNav.triggerEmailSend
* @private
* @param {string} emailBody
*/
function triggerEmailSend(emailBody)
{
window.open(
`mailto:?body=${encodeURIComponent(emailBody)}`,
'_self',
'noopener, noreferrer'
);
}
/**
* Send Email with current paste (URL).
*
* @name TopNav.sendEmail
* @private
* @function
* @param {Date|null} expirationDate date of expiration
* @param {bool} isBurnafterreading whether it is burn after reading
*/
function sendEmail(expirationDate, isBurnafterreading)
{
const expirationDateRoundedToSecond = new Date(expirationDate);
// round down at least 30 seconds to make up for the delay of request
expirationDateRoundedToSecond.setUTCSeconds(
expirationDateRoundedToSecond.getUTCSeconds() - 30
);
expirationDateRoundedToSecond.setUTCSeconds(0);
const $emailconfirmmodal = $('#emailconfirmmodal');
if ($emailconfirmmodal.length > 0) {
if (expirationDate !== null) {
const $emailconfirmTimezoneCurrent = $emailconfirmmodal.find('#emailconfirm-timezone-current');
const $emailconfirmTimezoneUtc = $emailconfirmmodal.find('#emailconfirm-timezone-utc');
$emailconfirmTimezoneCurrent.off('click.sendEmailCurrentTimezone');
$emailconfirmTimezoneCurrent.on('click.sendEmailCurrentTimezone', () => {
const emailBody = templateEmailBody(expirationDateRoundedToSecond.toLocaleString(), isBurnafterreading);
$emailconfirmmodal.modal('hide');
triggerEmailSend(emailBody);
});
$emailconfirmTimezoneUtc.off('click.sendEmailUtcTimezone');
$emailconfirmTimezoneUtc.on('click.sendEmailUtcTimezone', () => {
const emailBody = templateEmailBody(expirationDateRoundedToSecond.toLocaleString(
undefined,
// we don't use Date.prototype.toUTCString() because we would like to avoid GMT
{ timeZone: 'UTC', dateStyle: 'long', timeStyle: 'long' }
), isBurnafterreading);
$emailconfirmmodal.modal('hide');
triggerEmailSend(emailBody);
});
$emailconfirmmodal.modal('show');
} else {
triggerEmailSend(templateEmailBody(null, isBurnafterreading));
}
} else {
let emailBody = '';
if (expirationDate !== null) {
const expirationDateString = window.confirm(
I18n._('Recipient may become aware of your timezone, convert time to UTC?')
) ? expirationDateRoundedToSecond.toLocaleString(
undefined,
// we don't use Date.prototype.toUTCString() because we would like to avoid GMT
{ timeZone: 'UTC', dateStyle: 'long', timeStyle: 'long' }
) : expirationDateRoundedToSecond.toLocaleString();
emailBody = templateEmailBody(expirationDateString, isBurnafterreading);
} else {
emailBody = templateEmailBody(null, isBurnafterreading);
}
triggerEmailSend(emailBody);
}
}
/**
* Shows all navigation elements for viewing an existing paste
*
* @name TopNav.showViewButtons
* @function
*/
me.showViewButtons = function()
{
Iif (viewButtonsDisplayed) {
return;
}
$newButton.removeClass('hidden');
$cloneButton.removeClass('hidden');
$rawTextButton.removeClass('hidden');
$downloadTextButton.removeClass('hidden');
$qrCodeLink.removeClass('hidden');
viewButtonsDisplayed = true;
};
/**
* Hides all navigation elements for viewing an existing paste
*
* @name TopNav.hideViewButtons
* @function
*/
me.hideViewButtons = function()
{
if (!viewButtonsDisplayed) {
return;
}
$cloneButton.addClass('hidden');
$newButton.addClass('hidden');
$rawTextButton.addClass('hidden');
$downloadTextButton.addClass('hidden');
$qrCodeLink.addClass('hidden');
me.hideEmailButton();
viewButtonsDisplayed = false;
};
/**
* Hides all elements belonging to existing pastes
*
* @name TopNav.hideAllButtons
* @function
*/
me.hideAllButtons = function()
{
me.hideViewButtons();
me.hideCreateButtons();
};
/**
* shows all elements needed when creating a new paste
*
* @name TopNav.showCreateButtons
* @function
*/
me.showCreateButtons = function()
{
Iif (createButtonsDisplayed) {
return;
}
$attach.removeClass('hidden');
$burnAfterReadingOption.removeClass('hidden');
$expiration.removeClass('hidden');
$formatter.removeClass('hidden');
$newButton.removeClass('hidden');
$openDiscussionOption.removeClass('hidden');
$password.removeClass('hidden');
$sendButton.removeClass('hidden');
createButtonsDisplayed = true;
};
/**
* shows all elements needed when creating a new paste
*
* @name TopNav.hideCreateButtons
* @function
*/
me.hideCreateButtons = function()
{
if (!createButtonsDisplayed) {
return;
}
$newButton.addClass('hidden');
$sendButton.addClass('hidden');
$expiration.addClass('hidden');
$formatter.addClass('hidden');
$burnAfterReadingOption.addClass('hidden');
$openDiscussionOption.addClass('hidden');
$password.addClass('hidden');
$attach.addClass('hidden');
createButtonsDisplayed = false;
};
/**
* only shows the "new paste" button
*
* @name TopNav.showNewPasteButton
* @function
*/
me.showNewPasteButton = function()
{
$newButton.removeClass('hidden');
};
/**
* only shows the "retry" button
*
* @name TopNav.showRetryButton
* @function
*/
me.showRetryButton = function()
{
$retryButton.removeClass('hidden');
}
/**
* hides the "retry" button
*
* @name TopNav.hideRetryButton
* @function
*/
me.hideRetryButton = function()
{
$retryButton.addClass('hidden');
}
/**
* show the "email" button
*
* @name TopNav.showEmailbutton
* @function
* @param {int|undefined} optionalRemainingTimeInSeconds
*/
me.showEmailButton = function(optionalRemainingTimeInSeconds)
{
try {
// we cache expiration date in closure to avoid inaccurate expiration datetime
const expirationDate = Helper.calculateExpirationDate(
new Date(),
typeof optionalRemainingTimeInSeconds === 'number' ? optionalRemainingTimeInSeconds : TopNav.getExpiration()
);
const isBurnafterreading = TopNav.getBurnAfterReading();
$emailLink.removeClass('hidden');
$emailLink.off('click.sendEmail');
$emailLink.on('click.sendEmail', () => {
sendEmail(expirationDate, isBurnafterreading);
});
} catch (error) {
console.error(error);
Alert.showError('Cannot calculate expiration date.');
}
}
/**
* hide the "email" button
*
* @name TopNav.hideEmailButton
* @function
*/
me.hideEmailButton = function()
{
$emailLink.addClass('hidden');
$emailLink.off('click.sendEmail');
}
/**
* only hides the clone button
*
* @name TopNav.hideCloneButton
* @function
*/
me.hideCloneButton = function()
{
$cloneButton.addClass('hidden');
};
/**
* only hides the raw text button
*
* @name TopNav.hideRawButton
* @function
*/
me.hideRawButton = function()
{
$rawTextButton.addClass('hidden');
};
/**
* only hides the download text button
*
* @name TopNav.hideRawButton
* @function
*/
me.hideDownloadButton = function()
{
$downloadTextButton.addClass('hidden');
};
/**
* only hides the qr code button
*
* @name TopNav.hideQrCodeButton
* @function
*/
me.hideQrCodeButton = function()
{
$qrCodeLink.addClass('hidden');
}
/**
* hide all irrelevant buttons when viewing burn after reading paste
*
* @name TopNav.hideBurnAfterReadingButtons
* @function
*/
me.hideBurnAfterReadingButtons = function()
{
me.hideCloneButton();
me.hideQrCodeButton();
me.hideEmailButton();
}
/**
* hides the file selector in attachment
*
* @name TopNav.hideFileSelector
* @function
*/
me.hideFileSelector = function()
{
$fileWrap.addClass('hidden');
};
/**
* shows the custom attachment
*
* @name TopNav.showCustomAttachment
* @function
*/
me.showCustomAttachment = function()
{
$customAttachment.removeClass('hidden');
};
/**
* hides the custom attachment
*
* @name TopNav.hideCustomAttachment
* @function
*/
me.hideCustomAttachment = function()
{
$customAttachment.addClass('hidden');
$fileWrap.removeClass('hidden');
};
/**
* collapses the navigation bar, only if expanded
*
* @name TopNav.collapseBar
* @function
*/
me.collapseBar = function()
{
Iif ($('#navbar').attr('aria-expanded') === 'true') {
$('.navbar-toggle').click();
}
};
/**
* Reset the top navigation back to it's default values.
*
* @name TopNav.resetInput
* @function
*/
me.resetInput = function()
{
clearAttachmentInput();
clearPasswordInput();
$burnAfterReading.prop('checked', burnAfterReadingDefault);
$openDiscussion.prop('checked', openDiscussionDefault);
if (openDiscussionDefault || !burnAfterReadingDefault) $openDiscussionOption.removeClass('buttondisabled');
if (burnAfterReadingDefault || !openDiscussionDefault) $burnAfterReadingOption.removeClass('buttondisabled');
pasteExpiration = Model.getExpirationDefault() || pasteExpiration;
$('#pasteExpiration>option').each(function() {
const $this = $(this);
if ($this.val() === pasteExpiration) {
$('#pasteExpirationDisplay').text($this.text());
}
});
};
/**
* returns the currently set expiration time
*
* @name TopNav.getExpiration
* @function
* @return {int}
*/
me.getExpiration = function()
{
return pasteExpiration;
};
/**
* returns the currently selected file(s)
*
* @name TopNav.getFileList
* @function
* @return {FileList|null}
*/
me.getFileList = function()
{
const $file = $('#file');
// if no file given, return null
if (!$file.length || !$file[0].files.length) {
return null;
}
// ensure the selected file is still accessible
Iif (!($file[0].files && $file[0].files[0])) {
return null;
}
return $file[0].files;
};
/**
* returns the state of the burn after reading checkbox
*
* @name TopNav.getBurnAfterReading
* @function
* @return {bool}
*/
me.getBurnAfterReading = function()
{
return $burnAfterReading.prop('checked');
};
/**
* returns the state of the discussion checkbox
*
* @name TopNav.getOpenDiscussion
* @function
* @return {bool}
*/
me.getOpenDiscussion = function()
{
return $openDiscussion.prop('checked');
};
/**
* returns the entered password
*
* @name TopNav.getPassword
* @function
* @return {string}
*/
me.getPassword = function()
{
// when password is disabled $passwordInput.val() will return undefined
return $passwordInput.val() || '';
};
/**
* returns the element where custom attachments can be placed
*
* Used by AttachmentViewer when an attachment is cloned here.
*
* @name TopNav.getCustomAttachment
* @function
* @return {jQuery}
*/
me.getCustomAttachment = function()
{
return $customAttachment;
};
/**
* Set a function to call when the retry button is clicked.
*
* @name TopNav.setRetryCallback
* @function
* @param {function} callback
*/
me.setRetryCallback = function(callback)
{
retryButtonCallback = callback;
}
/**
* Highlight file upload
*
* @name TopNav.highlightFileupload
* @function
*/
me.highlightFileupload = function()
{
// visually indicate file uploaded
const $attachDropdownToggle = $attach.children('.dropdown-toggle');
if ($attachDropdownToggle.attr('aria-expanded') === 'false') {
$attachDropdownToggle.click();
}
$fileWrap.addClass('highlight');
setTimeout(function () {
$fileWrap.removeClass('highlight');
}, 300);
}
/**
* set the format on bootstrap templates in dropdown programmatically
*
* @name TopNav.setFormat
* @function
*/
me.setFormat = function(format)
{
$formatter.parent().find(`a[data-format="${format}"]`).click();
}
/**
* returns if attachment dropdown is readonly, not editable
*
* @name TopNav.isAttachmentReadonly
* @function
* @return {bool}
*/
me.isAttachmentReadonly = function()
{
return !createButtonsDisplayed || $attach.hasClass('hidden');
}
/**
* init navigation manager
*
* preloads jQuery elements
*
* @name TopNav.init
* @function
*/
me.init = function()
{
$attach = $('#attach');
$burnAfterReading = $('#burnafterreading');
$burnAfterReadingOption = $('#burnafterreadingoption');
$cloneButton = $('#clonebutton');
$customAttachment = $('#customattachment');
$expiration = $('#expiration');
$fileRemoveButton = $('#fileremovebutton');
$fileWrap = $('#filewrap');
$formatter = $('#formatter');
$newButton = $('#newbutton');
$openDiscussion = $('#opendiscussion');
$openDiscussionOption = $('#opendiscussionoption');
$password = $('#password');
$passwordInput = $('#passwordinput');
$rawTextButton = $('#rawtextbutton');
$downloadTextButton = $('#downloadtextbutton');
$retryButton = $('#retrybutton');
$sendButton = $('#sendbutton');
$qrCodeLink = $('#qrcodelink');
$emailLink = $('#emaillink');
// bootstrap template drop down
$('#language ul.dropdown-menu li a').click(setLanguage);
// page template drop down
$('#language select option').click(setLanguage);
// bind events
$burnAfterReading.change(changeBurnAfterReading);
$openDiscussionOption.change(changeOpenDiscussion);
$newButton.click(clickNewPaste);
$sendButton.click(PasteEncrypter.sendPaste);
$cloneButton.click(Controller.clonePaste);
$rawTextButton.click(rawText);
$downloadTextButton.click(downloadText);
$retryButton.click(clickRetryButton);
$fileRemoveButton.click(removeAttachment);
$qrCodeLink.click(displayQrCode);
// bootstrap template drop downs
$('ul.dropdown-menu li a', $('#expiration').parent()).click(updateExpiration);
$('ul.dropdown-menu li a', $('#formatter').parent()).click(updateFormat);
// bootstrap5 & page drop downs
$('#pasteExpiration').on('change', function() {
pasteExpiration = Model.getExpirationDefault();
});
$('#pasteFormatter').on('change', function() {
PasteViewer.setFormat(Model.getFormatDefault());
});
// initiate default state of checkboxes
changeBurnAfterReading();
changeOpenDiscussion();
// get default values from template or fall back to set value
burnAfterReadingDefault = me.getBurnAfterReading();
openDiscussionDefault = me.getOpenDiscussion();
pasteExpiration = Model.getExpirationDefault();
createButtonsDisplayed = false;
viewButtonsDisplayed = false;
};
return me;
})(window, document);
/**
* Responsible for AJAX requests, transparently handles encryption…
*
* @name ServerInteraction
* @class
*/
const ServerInteraction = (function () {
const me = {};
let successFunc = null,
failureFunc = null,
symmetricKey = null,
url,
data,
password;
/**
* public variable ('constant') for errors to prevent magic numbers
*
* @name ServerInteraction.error
* @readonly
* @enum {Object}
*/
me.error = {
okay: 0,
custom: 1,
unknown: 2,
serverError: 3
};
/**
* ajaxHeaders to send in AJAX requests
*
* @name ServerInteraction.ajaxHeaders
* @private
* @readonly
* @enum {Object}
*/
const ajaxHeaders = {'X-Requested-With': 'JSONHttpRequest'};
/**
* called after successful upload
*
* @name ServerInteraction.success
* @private
* @function
* @param {int} status
* @param {int} result - optional
*/
function success(status, result)
{
if (successFunc !== null) {
// add useful data to result
result.encryptionKey = symmetricKey;
successFunc(status, result);
}
}
/**
* called after a upload failure
*
* @name ServerInteraction.fail
* @private
* @function
* @param {int} status - internal code
* @param {int} result - original error code
*/
function fail(status, result)
{
if (failureFunc !== null) {
failureFunc(status, result);
}
}
/**
* actually uploads the data
*
* @name ServerInteraction.run
* @function
*/
me.run = function()
{
let isPost = Object.keys(data).length > 0,
ajaxParams = {
type: isPost ? 'POST' : 'GET',
url: url,
headers: ajaxHeaders,
dataType: 'json',
success: function(result) {
if (result.status === 0) {
success(0, result);
} else if (result.status === 1) {
fail(1, result);
} else {
fail(2, result);
}
}
};
if (isPost) {
ajaxParams.data = JSON.stringify(data);
}
$.ajax(ajaxParams).fail(function(jqXHR, textStatus, errorThrown) {
console.error(textStatus, errorThrown);
fail(3, jqXHR);
});
};
/**
* return currently set data, used in unit testing
*
* @name ServerInteraction.getData
* @function
*/
me.getData = function()
{
return data;
};
/**
* set success function
*
* @name ServerInteraction.setUrl
* @function
* @param {function} newUrl
*/
me.setUrl = function(newUrl)
{
url = newUrl;
};
/**
* sets the password to use (first value) and optionally also the
* encryption key (not recommended, it is automatically generated).
*
* Note: Call this after prepare() as prepare() resets these values.
*
* @name ServerInteraction.setCryptValues
* @function
* @param {string} newPassword
* @param {string} newKey - optional
*/
me.setCryptParameters = function(newPassword, newKey)
{
password = newPassword;
Eif (typeof newKey !== 'undefined') {
symmetricKey = newKey;
}
};
/**
* set success function
*
* @name ServerInteraction.setSuccess
* @function
* @param {function} func
*/
me.setSuccess = function(func)
{
successFunc = func;
};
/**
* set failure function
*
* @name ServerInteraction.setFailure
* @function
* @param {function} func
*/
me.setFailure = function(func)
{
failureFunc = func;
};
/**
* prepares a new upload
*
* Call this when doing a new upload to reset any data from potential
* previous uploads. Must be called before any other method of this
* module.
*
* @name ServerInteraction.prepare
* @function
* @return {object}
*/
me.prepare = function()
{
// entropy should already be checked!
// reset password
password = '';
// reset key, so it a new one is generated when it is used
symmetricKey = null;
// reset data
successFunc = null;
failureFunc = null;
url = Helper.baseUri();
data = {};
};
/**
* encrypts and sets the data
*
* @name ServerInteraction.setCipherMessage
* @async
* @function
* @param {object} cipherMessage
*/
me.setCipherMessage = async function(cipherMessage)
{
Iif (
symmetricKey === null ||
(typeof symmetricKey === 'string' && symmetricKey === '')
) {
symmetricKey = CryptTool.getSymmetricKey();
}
Iif (!data.hasOwnProperty('adata')) {
data['adata'] = [];
}
let cipherResult = await CryptTool.cipher(symmetricKey, password, JSON.stringify(cipherMessage), data['adata']);
data['v'] = 2;
data['ct'] = cipherResult[0];
data['adata'] = cipherResult[1];
};
/**
* set the additional metadata to send unencrypted
*
* @name ServerInteraction.setUnencryptedData
* @function
* @param {string} index
* @param {mixed} element
*/
me.setUnencryptedData = function(index, element)
{
data[index] = element;
};
/**
* Helper, which parses shows a general error message based on the result of the ServerInteraction
*
* @name ServerInteraction.parseUploadError
* @function
* @param {int} status
* @param {object} data
* @param {string} doThisThing - a human description of the action, which was tried
* @return {array}
*/
me.parseUploadError = function(status, data, doThisThing) {
let errorArray;
switch (status) {
case me.error.custom:
errorArray = ['Could not ' + doThisThing + ': %s', data.message];
break;
case me.error.unknown:
errorArray = ['Could not ' + doThisThing + ': %s', I18n._('unknown status')];
break;
case me.error.serverError:
errorArray = ['Could not ' + doThisThing + ': %s', I18n._('server error or not responding')];
break;
default:
errorArray = ['Could not ' + doThisThing + ': %s', I18n._('unknown error')];
break;
}
return errorArray;
};
return me;
})();
/**
* (controller) Responsible for encrypting paste and sending it to server.
*
* Does upload, encryption is done transparently by ServerInteraction.
*
* @name PasteEncrypter
* @class
*/
const PasteEncrypter = (function () {
const me = {};
/**
* called after successful paste upload
*
* @name PasteEncrypter.showCreatedPaste
* @private
* @function
* @param {int} status
* @param {object} data
*/
function showCreatedPaste(status, data) {
Alert.hideLoading();
Alert.hideMessages();
// show notification
const baseUri = Helper.baseUri() + '?',
url = baseUri + data.id + (TopNav.getBurnAfterReading() ? loadConfirmPrefix : '#') + CryptTool.base58encode(data.encryptionKey),
deleteUrl = baseUri + 'pasteid=' + data.id + '&deletetoken=' + data.deletetoken;
PasteStatus.createPasteNotification(url, deleteUrl);
// show new URL in browser bar
history.pushState({type: 'newpaste'}, document.title, url);
TopNav.showViewButtons();
// this cannot be grouped with showViewButtons due to remaining time calculation
TopNav.showEmailButton();
TopNav.hideRawButton();
TopNav.hideDownloadButton();
Editor.hide();
// parse and show text
// (preparation already done in me.sendPaste())
PasteViewer.run();
}
/**
* called after successful comment upload
*
* @name PasteEncrypter.showUploadedComment
* @private
* @function
* @param {int} status
* @param {object} data
*/
function showUploadedComment(status, data) {
// show success message
Alert.showStatus('Comment posted.');
// reload paste
Controller.refreshPaste(function () {
// highlight sent comment
DiscussionViewer.highlightComment(data.id, true);
// reset error handler
Alert.setCustomHandler(null);
});
}
/**
* send a reply in a discussion
*
* @name PasteEncrypter.sendComment
* @async
* @function
*/
me.sendComment = async function()
{
Alert.hideMessages();
Alert.setCustomHandler(DiscussionViewer.handleNotification);
// UI loading state
TopNav.hideAllButtons();
Alert.showLoading('Sending comment…', 'cloud-upload');
// get data
const plainText = DiscussionViewer.getReplyMessage(),
nickname = DiscussionViewer.getReplyNickname(),
parentid = DiscussionViewer.getReplyCommentId();
// do not send if there is no data
if (plainText.length === 0) {
// revert loading status…
Alert.hideLoading();
Alert.setCustomHandler(null);
TopNav.showViewButtons();
return;
}
// prepare server interaction
ServerInteraction.prepare();
ServerInteraction.setCryptParameters(Prompt.getPassword(), Model.getPasteKey());
// set success/fail functions
ServerInteraction.setSuccess(showUploadedComment);
ServerInteraction.setFailure(function (status, data) {
// revert loading status…
Alert.hideLoading();
TopNav.showViewButtons();
// …show error message…
Alert.showError(
ServerInteraction.parseUploadError(status, data, 'post comment')
);
// …and reset error handler
Alert.setCustomHandler(null);
});
// fill it with unencrypted params
ServerInteraction.setUnencryptedData('pasteid', Model.getPasteId());
if (typeof parentid === 'undefined') {
// if parent id is not set, this is the top-most comment, so use
// paste id as parent, as the root element of the discussion tree
ServerInteraction.setUnencryptedData('parentid', Model.getPasteId());
} else {
ServerInteraction.setUnencryptedData('parentid', parentid);
}
// prepare cypher message
let cipherMessage = {
'comment': plainText
};
if (nickname.length > 0) {
cipherMessage['nickname'] = nickname;
}
await ServerInteraction.setCipherMessage(cipherMessage).catch(Alert.showError);
ServerInteraction.run();
};
/**
* sends a new paste to server
*
* @name PasteEncrypter.sendPaste
* @async
* @function
*/
me.sendPaste = async function()
{
// hide previous (error) messages
Controller.hideStatusMessages();
// UI loading state
TopNav.hideAllButtons();
Alert.showLoading('Sending paste…', 'cloud-upload');
TopNav.collapseBar();
// get data
const plainText = Editor.getText(),
format = PasteViewer.getFormat(),
// the methods may return different values if no files are attached (null, undefined or false)
files = TopNav.getFileList() || AttachmentViewer.getFile() || AttachmentViewer.hasAttachment();
// do not send if there is no data
if (plainText.length === 0 && !files) {
// revert loading status…
Alert.hideLoading();
TopNav.showCreateButtons();
return;
}
// prepare server interaction
ServerInteraction.prepare();
ServerInteraction.setCryptParameters(TopNav.getPassword());
// set success/fail functions
ServerInteraction.setSuccess(showCreatedPaste);
ServerInteraction.setFailure(function (status, data) {
// revert loading status…
Alert.hideLoading();
TopNav.showCreateButtons();
// show error message
Alert.showError(
ServerInteraction.parseUploadError(status, data, 'create paste')
);
});
// fill it with unencrypted submitted options
ServerInteraction.setUnencryptedData('adata', [
null, format,
TopNav.getOpenDiscussion() ? 1 : 0,
TopNav.getBurnAfterReading() ? 1 : 0
]);
ServerInteraction.setUnencryptedData('meta', {'expire': TopNav.getExpiration()});
// prepare PasteViewer for later preview
PasteViewer.setText(plainText);
PasteViewer.setFormat(format);
// prepare cypher message
let file = AttachmentViewer.getAttachmentData(),
cipherMessage = {
'paste': plainText
};
if (typeof file !== 'undefined' && file !== null) {
cipherMessage['attachment'] = file;
cipherMessage['attachment_name'] = AttachmentViewer.getFile().name;
} else if (AttachmentViewer.hasAttachment()) {
// fall back to cloned part
let attachment = AttachmentViewer.getAttachment();
cipherMessage['attachment'] = attachment[0];
cipherMessage['attachment_name'] = attachment[1];
// we need to retrieve data from blob if browser already parsed it in memory
if (typeof attachment[0] === 'string' && attachment[0].startsWith('blob:')) {
Alert.showStatus(
[
'Retrieving cloned file \'%s\' from memory...',
attachment[1]
],
'copy'
);
try {
const blobData = await $.ajax({
type: 'GET',
url: `${attachment[0]}`,
processData: false,
timeout: 10000,
xhrFields: {
withCredentials: false,
responseType: 'blob'
}
});
if (blobData instanceof window.Blob) {
const fileReading = new Promise(function(resolve, reject) {
const fileReader = new FileReader();
fileReader.onload = function (event) {
resolve(event.target.result);
};
fileReader.onerror = function (error) {
reject(error);
}
fileReader.readAsDataURL(blobData);
});
cipherMessage['attachment'] = await fileReading;
} else {
const error = 'Cannot process attachment data.';
Alert.showError(error);
throw new TypeError(error);
}
} catch (error) {
console.error(error);
Alert.showError('Cannot retrieve attachment.');
throw error;
}
}
}
// encrypt message
await ServerInteraction.setCipherMessage(cipherMessage).catch(Alert.showError);
// send data
ServerInteraction.run();
};
return me;
})();
/**
* (controller) Responsible for decrypting cipherdata and passing data to view.
*
* Only decryption, no download.
*
* @name PasteDecrypter
* @class
*/
const PasteDecrypter = (function () {
const me = {};
/**
* decrypt data or prompts for password in case of failure
*
* @name PasteDecrypter.decryptOrPromptPassword
* @private
* @async
* @function
* @param {string} key
* @param {string} password - optional, may be an empty string
* @param {string} cipherdata
* @throws {string}
* @return {false|string} false, when unsuccessful or string (decrypted data)
*/
async function decryptOrPromptPassword(key, password, cipherdata)
{
// try decryption without password
const plaindata = await CryptTool.decipher(key, password, cipherdata);
// if it fails, request password
if (plaindata.length === 0 && password.length === 0) {
// show prompt
Prompt.requestPassword();
// Thus, we cannot do anything yet, we need to wait for the user
// input.
return false;
}
// if all tries failed, we can only return an error
if (plaindata.length === 0) {
return false;
}
return plaindata;
}
/**
* decrypt the actual paste text
*
* @name PasteDecrypter.decryptPaste
* @private
* @async
* @function
* @param {Paste} paste - paste data in object form
* @param {string} key
* @param {string} password
* @throws {string}
* @return {Promise}
*/
async function decryptPaste(paste, key, password)
{
let pastePlain = await decryptOrPromptPassword(
key, password,
paste.getCipherData()
);
if (pastePlain === false) {
if (password.length === 0) {
throw 'waiting on user to provide a password';
} else {
Alert.hideLoading();
// reset password, so it can be re-entered
Prompt.reset();
TopNav.showRetryButton();
throw 'Could not decrypt data. Did you enter a wrong password? Retry with the button at the top.';
}
}
if (paste.v > 1) {
// version 2 paste
const pasteMessage = JSON.parse(pastePlain);
if (pasteMessage.hasOwnProperty('attachment') && pasteMessage.hasOwnProperty('attachment_name')) {
AttachmentViewer.setAttachment(pasteMessage.attachment, pasteMessage.attachment_name);
AttachmentViewer.showAttachment();
}
pastePlain = pasteMessage.paste;
} else {
// version 1 paste
if (paste.hasOwnProperty('attachment') && paste.hasOwnProperty('attachmentname')) {
Promise.all([
CryptTool.decipher(key, password, paste.attachment),
CryptTool.decipher(key, password, paste.attachmentname)
]).then((attachment) => {
AttachmentViewer.setAttachment(attachment[0], attachment[1]);
AttachmentViewer.showAttachment();
});
}
}
PasteViewer.setFormat(paste.getFormat());
PasteViewer.setText(pastePlain);
PasteViewer.run();
}
/**
* decrypts all comments and shows them
*
* @name PasteDecrypter.decryptComments
* @private
* @async
* @function
* @param {Paste} paste - paste data in object form
* @param {string} key
* @param {string} password
* @return {Promise}
*/
async function decryptComments(paste, key, password)
{
// remove potential previous discussion
DiscussionViewer.prepareNewDiscussion();
const commentDecryptionPromises = [];
// iterate over comments
for (let i = 0; i < paste.comments.length; ++i) {
const comment = new Comment(paste.comments[i]),
commentPromise = CryptTool.decipher(key, password, comment.getCipherData());
paste.comments[i] = comment;
if (comment.v > 1) {
// version 2 comment
commentDecryptionPromises.push(
commentPromise.then(function (commentJson) {
const commentMessage = JSON.parse(commentJson);
return [
commentMessage.comment || '',
commentMessage.nickname || ''
];
})
);
} else {
// version 1 comment
commentDecryptionPromises.push(
Promise.all([
commentPromise,
paste.comments[i].meta.hasOwnProperty('nickname') ?
CryptTool.decipher(key, password, paste.comments[i].meta.nickname) :
Promise.resolve('')
])
);
}
}
return Promise.all(commentDecryptionPromises).then(function (plaintexts) {
for (let i = 0; i < paste.comments.length; ++i) {
if (plaintexts[i][0].length === 0) {
continue;
}
DiscussionViewer.addComment(
paste.comments[i],
plaintexts[i][0],
plaintexts[i][1]
);
}
});
}
/**
* show decrypted text in the display area, including discussion (if open)
*
* @name PasteDecrypter.run
* @function
* @param {Paste} [paste] - (optional) object including comments to display (items = array with keys ('data','meta'))
*/
me.run = function(paste)
{
Alert.hideMessages();
Alert.showLoading('Decrypting paste…', 'cloud-download');
if (typeof paste === 'undefined' || paste.type === 'click') {
// get cipher data and wait until it is available
Model.getPasteData(me.run);
return;
}
let key = Model.getPasteKey(),
password = Prompt.getPassword(),
decryptionPromises = [];
TopNav.setRetryCallback(function () {
TopNav.hideRetryButton();
me.run(paste);
});
// decrypt paste & attachments
decryptionPromises.push(decryptPaste(paste, key, password));
// if the discussion is opened on this paste, display it
if (paste.isDiscussionEnabled()) {
decryptionPromises.push(decryptComments(paste, key, password));
}
// shows the remaining time (until) deletion
PasteStatus.showRemainingTime(paste);
Promise.all(decryptionPromises)
.then(() => {
Alert.hideLoading();
TopNav.showViewButtons();
// discourage cloning (it cannot really be prevented)
if (paste.isBurnAfterReadingEnabled()) {
TopNav.hideBurnAfterReadingButtons();
} else {
// we have to pass in remaining_time here
TopNav.showEmailButton(paste.getTimeToLive());
}
// only offer adding comments, after paste was successfully decrypted
if (paste.isDiscussionEnabled()) {
DiscussionViewer.finishDiscussion();
}
})
.catch((err) => {
// wait for the user to type in the password,
// then PasteDecrypter.run will be called again
Alert.showError(err);
});
};
return me;
})();
/**
* (controller) main PrivateBin logic
*
* @name Controller
* @param {object} window
* @param {object} document
* @class
*/
const Controller = (function (window, document) {
const me = {};
/**
* hides all status messages no matter which module showed them
*
* @name Controller.hideStatusMessages
* @function
*/
me.hideStatusMessages = function()
{
PasteStatus.hideMessages();
Alert.hideMessages();
};
/**
* creates a new paste
*
* @name Controller.newPaste
* @function
*/
me.newPaste = function()
{
// Important: This *must not* run Alert.hideMessages() as previous
// errors from viewing a paste should be shown.
TopNav.hideAllButtons();
Alert.showLoading('Preparing new paste…', 'time');
PasteStatus.hideMessages();
PasteViewer.hide();
Editor.resetInput();
Editor.show();
Editor.focusInput();
AttachmentViewer.removeAttachment();
TopNav.resetInput();
TopNav.showCreateButtons();
// newPaste could be called when user is on paste clone editing view
TopNav.hideCustomAttachment();
AttachmentViewer.clearDragAndDrop();
AttachmentViewer.removeAttachmentData();
Alert.hideLoading();
// only push new state if we are coming from a different one
if (Helper.baseUri() != window.location) {
history.pushState({type: 'create'}, document.title, Helper.baseUri());
}
// clear discussion
DiscussionViewer.prepareNewDiscussion();
};
/**
* shows the loaded paste
*
* @name Controller.showPaste
* @function
*/
me.showPaste = function()
{
try {
Model.getPasteKey();
} catch (err) {
console.error(err);
// missing decryption key (or paste ID) in URL?
if (window.location.hash.length === 0) {
Alert.showError('Cannot decrypt paste: Decryption key missing in URL (Did you use a redirector or an URL shortener which strips part of the URL?)');
return;
}
}
// check if we should request loading confirmation
if(window.location.hash.startsWith(loadConfirmPrefix)) {
Prompt.requestLoadConfirmation();
return;
}
// show proper elements on screen
PasteDecrypter.run();
};
/**
* refreshes the loaded paste to show potential new data
*
* @name Controller.refreshPaste
* @function
* @param {function} callback
*/
me.refreshPaste = function(callback)
{
// save window position to restore it later
const orgPosition = $(window).scrollTop();
Model.getPasteData(function (data) {
ServerInteraction.prepare();
ServerInteraction.setUrl(Helper.baseUri() + '?pasteid=' + Model.getPasteId());
ServerInteraction.setFailure(function (status, data) {
// revert loading status…
Alert.hideLoading();
TopNav.showViewButtons();
// show error message
Alert.showError(
ServerInteraction.parseUploadError(status, data, 'refresh display')
);
});
ServerInteraction.setSuccess(function (status, data) {
PasteDecrypter.run(new Paste(data));
// restore position
window.scrollTo(0, orgPosition);
// NOTE: could create problems as callback may be called
// asyncronously if PasteDecrypter e.g. needs to wait for a
// password being entered
callback();
});
ServerInteraction.run();
}, false); // this false is important as it circumvents the cache
}
/**
* clone the current paste
*
* @name Controller.clonePaste
* @function
*/
me.clonePaste = function()
{
TopNav.collapseBar();
TopNav.hideAllButtons();
// hide messages from previous paste
me.hideStatusMessages();
// erase the id and the key in url
history.pushState({type: 'clone'}, document.title, Helper.baseUri());
if (AttachmentViewer.hasAttachment()) {
AttachmentViewer.moveAttachmentTo(
TopNav.getCustomAttachment(),
'Cloned: \'%s\''
);
TopNav.hideFileSelector();
AttachmentViewer.hideAttachment();
// NOTE: it also looks nice without removing the attachment
// but for a consistent display we remove it…
AttachmentViewer.hideAttachmentPreview();
TopNav.showCustomAttachment();
// show another status message to make the user aware that the
// file was cloned too!
Alert.showStatus(
[
'The cloned file \'%s\' was attached to this paste.',
AttachmentViewer.getAttachment()[1]
],
'copy'
);
}
Editor.setText(PasteViewer.getText());
// also clone the format
TopNav.setFormat(PasteViewer.getFormat());
PasteViewer.hide();
Editor.show();
TopNav.showCreateButtons();
// clear discussion
DiscussionViewer.prepareNewDiscussion();
};
/**
* try initializing zlib or display a warning if it fails,
* extracted from main init to allow unit testing
*
* @name Controller.initZ
* @function
*/
me.initZ = function()
{
z = zlib.catch(function () {
if ($('body').data('compression') !== 'none') {
Alert.showWarning('Your browser doesn\'t support WebAssembly, used for zlib compression. You can create uncompressed documents, but can\'t read compressed ones.');
}
});
}
/**
* application start
*
* @name Controller.init
* @function
*/
me.init = function()
{
// first load translations
I18n.loadTranslations();
// Add a hook to make all links open a new window
DOMPurify.addHook('afterSanitizeAttributes', function(node) {
// set all elements owning target to target=_blank
if ('target' in node && node.id !== 'pasteurl') {
node.setAttribute('target', '_blank');
}
// set non-HTML/MathML links to xlink:show=new
if (!node.hasAttribute('target')
&& (node.hasAttribute('xlink:href')
|| node.hasAttribute('href'))) {
node.setAttribute('xlink:show', 'new');
}
if ('rel' in node) {
node.setAttribute('rel', 'nofollow noopener noreferrer');
}
});
// center all modals
$('.modal').on('show.bs.modal', function(e) {
$(e.target).css({
display: 'flex'
});
});
// initialize other modules/"classes"
Alert.init();
Model.init();
AttachmentViewer.init();
DiscussionViewer.init();
Editor.init();
PasteStatus.init();
PasteViewer.init();
Prompt.init();
TopNav.init();
UiHelper.init();
// check for legacy browsers before going any further
Iif (!Legacy.Check.getInit()) {
// Legacy check didn't complete, wait and try again
setTimeout(init, 500);
return;
}
Eif (!Legacy.Check.getStatus()) {
// something major is wrong, stop right away
return;
}
me.initZ();
// if delete token is passed (i.e. paste has been deleted by this
// access), add an event listener for the 'new' paste button in the alert
if (Model.hasDeleteToken()) {
$("#new-from-alert").on("click", function () {
UiHelper.reloadHome();
});
return;
}
// check whether existing paste needs to be shown
try {
Model.getPasteId();
} catch (e) {
// otherwise create a new paste
return me.newPaste();
}
// always reload on back button to invalidate cache(protect burn after read paste)
window.addEventListener('popstate', () => {
window.location.reload();
});
// display an existing paste
return me.showPaste();
}
return me;
})(window, document);
return {
Helper: Helper,
I18n: I18n,
CryptTool: CryptTool,
Model: Model,
UiHelper: UiHelper,
Alert: Alert,
PasteStatus: PasteStatus,
Prompt: Prompt,
Editor: Editor,
PasteViewer: PasteViewer,
AttachmentViewer: AttachmentViewer,
DiscussionViewer: DiscussionViewer,
TopNav: TopNav,
ServerInteraction: ServerInteraction,
PasteEncrypter: PasteEncrypter,
PasteDecrypter: PasteDecrypter,
Controller: Controller
};
})(jQuery, RawDeflate);
|