mirror of
https://github.com/PrivateBin/PrivateBin.git
synced 2024-10-01 01:26:10 -04:00
613 lines
20 KiB
JavaScript
613 lines
20 KiB
JavaScript
/**
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* ZeroBin
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*
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* a zero-knowledge paste bin
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*
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* @link http://sebsauvage.net/wiki/doku.php?id=php:zerobin
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* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
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* @license http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
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* @version 0.19
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*/
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// Immediately start random number generator collector.
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sjcl.random.startCollectors();
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/**
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* Converts a duration (in seconds) into human readable format.
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*
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* @param int seconds
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* @return string
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*/
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function secondsToHuman(seconds)
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{
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if (seconds<60) { var v=Math.floor(seconds); return v+' second'+((v>1)?'s':''); }
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if (seconds<60*60) { var v=Math.floor(seconds/60); return v+' minute'+((v>1)?'s':''); }
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if (seconds<60*60*24) { var v=Math.floor(seconds/(60*60)); return v+' hour'+((v>1)?'s':''); }
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// If less than 2 months, display in days:
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if (seconds<60*60*24*60) { var v=Math.floor(seconds/(60*60*24)); return v+' day'+((v>1)?'s':''); }
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var v=Math.floor(seconds/(60*60*24*30)); return v+' month'+((v>1)?'s':'');
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}
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/**
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* Converts an associative array to an encoded string
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* for appending to the anchor.
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*
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* @param object associative_array Object to be serialized
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* @return string
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*/
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function hashToParameterString(associativeArray)
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{
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var parameterString = ""
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for (key in associativeArray)
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{
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if( parameterString === "" )
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{
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parameterString = encodeURIComponent(key);
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parameterString += "=" + encodeURIComponent(associativeArray[key]);
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} else {
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parameterString += "&" + encodeURIComponent(key);
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parameterString += "=" + encodeURIComponent(associativeArray[key]);
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}
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}
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//padding for URL shorteners
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parameterString += "&p=p";
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return parameterString;
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}
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/**
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* Converts a string to an associative array.
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*
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* @param string parameter_string String containing parameters
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* @return object
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*/
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function parameterStringToHash(parameterString)
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{
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var parameterHash = {};
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var parameterArray = parameterString.split("&");
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for (var i = 0; i < parameterArray.length; i++) {
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//var currentParamterString = decodeURIComponent(parameterArray[i]);
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var pair = parameterArray[i].split("=");
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var key = decodeURIComponent(pair[0]);
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var value = decodeURIComponent(pair[1]);
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parameterHash[key] = value;
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}
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return parameterHash;
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}
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/**
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* Get an associative array of the parameters found in the anchor
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*
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* @return object
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**/
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function getParameterHash()
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{
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var hashIndex = window.location.href.indexOf("#");
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if (hashIndex >= 0) {
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return parameterStringToHash(window.location.href.substring(hashIndex + 1));
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} else {
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return {};
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}
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}
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/**
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* Compress a message (deflate compression). Returns base64 encoded data.
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*
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* @param string message
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* @return base64 string data
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*/
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function compress(message) {
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return Base64.toBase64( RawDeflate.deflate( Base64.utob(message) ) );
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}
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/**
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* Decompress a message compressed with compress().
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*/
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function decompress(data) {
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return Base64.btou( RawDeflate.inflate( Base64.fromBase64(data) ) );
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}
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/**
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* Compress, then encrypt message with key.
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*
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* @param string key
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* @param string message
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* @return encrypted string data
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*/
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function zeroCipher(key, message) {
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if ($('input#password').val().length == 0) {
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return sjcl.encrypt(key, compress(message));
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}
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return sjcl.encrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash($("input#password").val())), compress(message));
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}
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/**
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* Decrypt message with key, then decompress.
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*
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* @param key
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* @param encrypted string data
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* @return string readable message
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*/
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function zeroDecipher(key, data) {
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if (data != undefined) {
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try {
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return decompress(sjcl.decrypt(key, data));
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} catch (err) {
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var password = prompt("Please enter the password for this paste.", "");
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return decompress(sjcl.decrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(password)), data));
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}
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}
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}
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/**
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* @return the current script location (without search or hash part of the URL).
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* eg. http://server.com/zero/?aaaa#bbbb --> http://server.com/zero/
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*/
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function scriptLocation() {
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var scriptLocation = window.location.href.substring(0,window.location.href.length
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- window.location.search.length - window.location.hash.length);
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var hashIndex = scriptLocation.indexOf("#");
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if (hashIndex !== -1) {
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scriptLocation = scriptLocation.substring(0, hashIndex)
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}
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return scriptLocation
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}
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/**
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* @return the paste unique identifier from the URL
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* eg. 'c05354954c49a487'
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*/
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function pasteID() {
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return window.location.search.substring(1);
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}
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function htmlEntities(str) {
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return String(str).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"');
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}
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/**
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* Set text of a DOM element (required for IE)
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* This is equivalent to element.text(text)
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* @param object element : a DOM element.
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* @param string text : the text to enter.
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*/
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function setElementText(element, text) {
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// For IE<10.
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if ($('#oldienotice').is(":visible")) {
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// IE<10 does not support white-space:pre-wrap; so we have to do this BIG UGLY STINKING THING.
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var html = htmlEntities(text).replace(/\n/ig,"\r\n<br>");
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element.html('<pre>'+html+'</pre>');
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}
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// for other (sane) browsers:
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else {
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element.text(text);
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}
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}
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/**
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* Show decrypted text in the display area, including discussion (if open)
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*
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* @param string key : decryption key
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* @param array comments : Array of messages to display (items = array with keys ('data','meta')
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*/
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function displayMessages(key, comments) {
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try { // Try to decrypt the paste.
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var cleartext = zeroDecipher(key, comments[0].data);
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} catch(err) {
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$('#cleartext').addClass('hidden');
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$('#prettymessage').addClass('hidden');
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$('#clonebutton').addClass('hidden');
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showError('Could not decrypt data (Wrong key ?)');
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return;
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}
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setElementText($('#cleartext'), cleartext);
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setElementText($('#prettyprint'), cleartext);
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// Convert URLs to clickable links.
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urls2links($('#cleartext'));
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urls2links($('#prettyprint'));
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if (typeof prettyPrint == 'function') prettyPrint();
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// Display paste expiration.
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if (comments[0].meta.expire_date) $('#remainingtime').removeClass('foryoureyesonly').text('This document will expire in '+secondsToHuman(comments[0].meta.remaining_time)+'.').removeClass('hidden');
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if (comments[0].meta.burnafterreading) {
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$('#remainingtime').addClass('foryoureyesonly').text('FOR YOUR EYES ONLY. Don\'t close this window, this message can\'t be displayed again.').removeClass('hidden');
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$('#clonebutton').addClass('hidden'); // Discourage cloning (as it can't really be prevented).
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}
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// If the discussion is opened on this paste, display it.
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if (comments[0].meta.opendiscussion) {
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$('#comments').html('');
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// For each comment.
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for (var i = 1; i < comments.length; i++) {
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var comment=comments[i];
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var cleartext="[Could not decrypt comment ; Wrong key ?]";
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try {
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cleartext = zeroDecipher(key, comment.data);
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} catch(err) { }
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var place = $('#comments');
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// If parent comment exists, display below (CSS will automatically shift it right.)
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var cname = '#comment_'+comment.meta.parentid
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// If the element exists in page
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if ($(cname).length) {
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place = $(cname);
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}
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var divComment = $('<article><div class="comment" id="comment_' + comment.meta.commentid+'">'
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+ '<div class="commentmeta"><span class="nickname"></span><span class="commentdate"></span></div><div class="commentdata"></div>'
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+ '<button onclick="open_reply($(this),\'' + comment.meta.commentid + '\');return false;" class="btn btn-default">Reply</button>'
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+ '</div></article>');
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setElementText(divComment.find('div.commentdata'), cleartext);
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// Convert URLs to clickable links in comment.
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urls2links(divComment.find('div.commentdata'));
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divComment.find('span.nickname').html('<i>(Anonymous)</i>');
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// Try to get optional nickname:
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try {
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divComment.find('span.nickname').text(zeroDecipher(key, comment.meta.nickname));
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} catch(err) { }
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divComment.find('span.commentdate').text(' ('+(new Date(comment.meta.postdate*1000).toString())+')').attr('title','CommentID: ' + comment.meta.commentid);
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// If an avatar is available, display it.
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if (comment.meta.vizhash) {
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divComment.find('span.nickname').before('<img src="' + comment.meta.vizhash + '" class="vizhash" title="Anonymous avatar (Vizhash of the IP address)" />');
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}
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place.append(divComment);
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}
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$('#comments').append('<div class="comment"><button onclick="open_reply($(this),\'' + pasteID() + '\');return false;" class="btn btn-default">Add comment</button></div>');
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$('#discussion').removeClass('hidden');
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}
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}
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/**
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* Open the comment entry when clicking the "Reply" button of a comment.
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* @param object source : element which emitted the event.
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* @param string commentid = identifier of the comment we want to reply to.
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*/
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function open_reply(source, commentid) {
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$('div.reply').remove(); // Remove any other reply area.
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source.after('<div class="reply">'
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+ '<input type="text" id="nickname" class="form-control" title="Optional nickname..." value="Optional nickname..." />'
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+ '<textarea id="replymessage" class="replymessage form-control" cols="80" rows="7"></textarea>'
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+ '<br /><button id="replybutton" onclick="send_comment(\'' + commentid + '\');return false;" class="btn btn-default">Post comment</button>'
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+ '<div id="replystatus"> </div>'
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+ '</div>');
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$('#nickname').focus(function() {
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if ($(this).val() == $(this).attr('title')) {
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$(this).val('');
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}
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});
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$('#replymessage').focus();
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}
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/**
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* Send a reply in a discussion.
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* @param string parentid : the comment identifier we want to send a reply to.
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*/
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function send_comment(parentid) {
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// Do not send if no data.
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if ($('#replymessage').val().length==0) {
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return;
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}
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showStatus('Sending comment...', spin=true);
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var cipherdata = zeroCipher(pageKey(), $('#replymessage').val());
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var ciphernickname = '';
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var nick=$('#nickname').val();
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if (nick != '' && nick != 'Optional nickname...') {
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ciphernickname = zeroCipher(pageKey(), nick);
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}
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var data_to_send = { data:cipherdata,
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parentid: parentid,
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pasteid: pasteID(),
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nickname: ciphernickname
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};
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$.post(scriptLocation(), data_to_send, 'json')
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.error(function() {
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showError('Comment could not be sent (server error or not responding).');
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})
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.success(function(data) {
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if (data.status == 0) {
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showStatus('Comment posted.');
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location.reload();
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}
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else if (data.status==1) {
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showError('Could not post comment: '+data.message);
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}
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else {
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showError('Could not post comment.');
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}
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});
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}
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/**
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* Send a new paste to server
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*/
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function send_data() {
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// Do not send if no data.
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if ($('#message').val().length == 0) {
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return;
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}
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// If sjcl has not collected enough entropy yet, display a message.
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if (!sjcl.random.isReady())
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{
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showStatus('Sending paste (Please move your mouse for more entropy)...', spin=true);
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sjcl.random.addEventListener('seeded', function(){ send_data(); });
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return;
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}
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showStatus('Sending paste...', spin=true);
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var randomkey = sjcl.codec.base64.fromBits(sjcl.random.randomWords(8, 0), 0);
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var cipherdata = zeroCipher(randomkey, $('#message').val());
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var data_to_send = { data: cipherdata,
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expire: $('#pasteExpiration').val(),
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burnafterreading: $('#burnafterreading').is(':checked') ? 1 : 0,
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opendiscussion: $('#opendiscussion').is(':checked') ? 1 : 0
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};
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$.post(scriptLocation(), data_to_send, 'json')
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.error(function() {
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showError('Data could not be sent (serveur error or not responding).');
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})
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.success(function(data) {
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if (data.status == 0) {
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stateExistingPaste();
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var url = scriptLocation() + "?" + data.id + '#' + randomkey;
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var deleteUrl = scriptLocation() + "?pasteid=" + data.id + '&deletetoken=' + data.deletetoken;
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showStatus('');
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$('#pastelink').html('Your paste is <a id="pasteurl" href="' + url + '">' + url + '</a> <span id="copyhint">(Hit CTRL+C to copy)</span>');
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$('#deletelink').html('<a href="' + deleteUrl + '">Delete data</a>');
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$('#pasteresult').removeClass('hidden');
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selectText('pasteurl'); // We pre-select the link so that the user only has to CTRL+C the link.
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setElementText($('#cleartext'), $('#message').val());
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setElementText($('#prettyprint'), $('#message').val());
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// Convert URLs to clickable links.
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urls2links($('#cleartext'));
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urls2links($('#prettyprint'));
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showStatus('');
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if (typeof prettyPrint == 'function') prettyPrint();
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}
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else if (data.status==1) {
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showError('Could not create paste: '+data.message);
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}
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else {
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showError('Could not create paste.');
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}
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});
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}
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/** Text range selection.
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* From: http://stackoverflow.com/questions/985272/jquery-selecting-text-in-an-element-akin-to-highlighting-with-your-mouse
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* @param string element : Indentifier of the element to select (id="").
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*/
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function selectText(element) {
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var doc = document
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, text = doc.getElementById(element)
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, range, selection
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;
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if (doc.body.createTextRange) { //ms
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range = doc.body.createTextRange();
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range.moveToElementText(text);
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range.select();
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} else if (window.getSelection) { //all others
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selection = window.getSelection();
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range = doc.createRange();
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range.selectNodeContents(text);
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selection.removeAllRanges();
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selection.addRange(range);
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}
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}
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/**
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* Put the screen in "New paste" mode.
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*/
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function stateNewPaste() {
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$('#sendbutton').removeClass('hidden');
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$('#clonebutton').addClass('hidden');
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$('#rawtextbutton').addClass('hidden');
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$('#expiration').removeClass('hidden');
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$('#remainingtime').addClass('hidden');
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$('#burnafterreadingoption').removeClass('hidden');
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$('#opendisc').removeClass('hidden');
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$('#newbutton').removeClass('hidden');
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$('#pasteresult').addClass('hidden');
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$('#message').text('');
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$('#message').removeClass('hidden');
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$('#cleartext').addClass('hidden');
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$('#message').focus();
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$('#discussion').addClass('hidden');
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$('#prettymessage').addClass('hidden');
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// Show password field
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$('#password').show();
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}
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/**
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* Put the screen in "Existing paste" mode.
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*/
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function stateExistingPaste() {
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$('#sendbutton').addClass('hidden');
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// No "clone" for IE<10.
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if ($('#oldienotice').is(":visible")) {
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$('#clonebutton').addClass('hidden');
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}
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else {
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$('#clonebutton').removeClass('hidden');
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}
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$('#rawtextbutton').removeClass('hidden');
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$('#expiration').addClass('hidden');
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$('#burnafterreadingoption').addClass('hidden');
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$('#opendisc').addClass('hidden');
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$('#newbutton').removeClass('hidden');
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$('#pasteresult').addClass('hidden');
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$('#message').addClass('hidden');
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$('#cleartext').addClass('hidden');
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$('#prettymessage').removeClass('hidden');
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}
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/** Return raw text
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*/
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function rawText()
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{
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var paste = $('#cleartext').html();
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var newDoc = document.open('text/html', 'replace');
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newDoc.write('<pre>'+paste+'</pre>');
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newDoc.close();
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}
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/**
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* Clone the current paste.
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*/
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function clonePaste() {
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stateNewPaste();
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//Erase the id and the key in url
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history.replaceState(document.title, document.title, scriptLocation());
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showStatus('');
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$('#message').text($('#cleartext').text());
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}
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/**
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* Create a new paste.
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*/
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function newPaste() {
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stateNewPaste();
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showStatus('');
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$('#message').text('');
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}
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/**
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* Display an error message
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* (We use the same function for paste and reply to comments)
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*/
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function showError(message) {
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$('#status').addClass('errorMessage').text(message);
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$('#replystatus').addClass('errorMessage').text(message);
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}
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/**
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* Display status
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* (We use the same function for paste and reply to comments)
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*
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* @param string message : text to display
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* @param boolean spin (optional) : tell if the "spinning" animation should be displayed.
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*/
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function showStatus(message, spin) {
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$('#replystatus').removeClass('errorMessage');
|
|
$('#replystatus').text(message);
|
|
if (!message) {
|
|
$('#status').html(' ');
|
|
return;
|
|
}
|
|
if (message == '') {
|
|
$('#status').html(' ');
|
|
return;
|
|
}
|
|
$('#status').removeClass('errorMessage');
|
|
$('#status').text(message);
|
|
if (spin) {
|
|
var img = '<img src="img/busy.gif" style="width:16px;height:9px;margin:0px 4px 0px 0px;" />';
|
|
$('#status').prepend(img);
|
|
$('#replystatus').prepend(img);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Convert URLs to clickable links.
|
|
* URLs to handle:
|
|
* <code>
|
|
* magnet:?xt.1=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C&xt.2=urn:sha1:TXGCZQTH26NL6OUQAJJPFALHG2LTGBC7
|
|
* http://localhost:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
|
|
* http://user:password@localhost:8800/zero/?6f09182b8ea51997#WtLEUO5Epj9UHAV9JFs+6pUQZp13TuspAUjnF+iM+dM=
|
|
* </code>
|
|
*
|
|
* @param object element : a jQuery DOM element.
|
|
* @FIXME: add ppa & apt links.
|
|
*/
|
|
function urls2links(element) {
|
|
var re = /((http|https|ftp):\/\/[\w?=&.\/-;#@~%+-]+(?![\w\s?&.\/;#~%"=-]*>))/ig;
|
|
element.html(element.html().replace(re,'<a href="$1" rel="nofollow">$1</a>'));
|
|
var re = /((magnet):[\w?=&.\/-;#@~%+-]+)/ig;
|
|
element.html(element.html().replace(re,'<a href="$1">$1</a>'));
|
|
}
|
|
|
|
/**
|
|
* Return the deciphering key stored in anchor part of the URL
|
|
*/
|
|
function pageKey() {
|
|
var key = window.location.hash.substring(1); // Get key
|
|
|
|
// Some stupid web 2.0 services and redirectors add data AFTER the anchor
|
|
// (such as &utm_source=...).
|
|
// We will strip any additional data.
|
|
|
|
// First, strip everything after the equal sign (=) which signals end of base64 string.
|
|
i = key.indexOf('='); if (i>-1) { key = key.substring(0,i+1); }
|
|
|
|
// If the equal sign was not present, some parameters may remain:
|
|
i = key.indexOf('&'); if (i>-1) { key = key.substring(0,i); }
|
|
|
|
// Then add trailing equal sign if it's missing
|
|
if (key.charAt(key.length-1)!=='=') key+='=';
|
|
|
|
return key;
|
|
}
|
|
|
|
$(function() {
|
|
// hide "no javascript" message
|
|
$('#noscript').hide();
|
|
|
|
// If "burn after reading" is checked, disable discussion.
|
|
$('#burnafterreading').change(function() {
|
|
if ($(this).is(':checked') ) {
|
|
$('#opendisc').addClass('buttondisabled');
|
|
$('#opendiscussion').attr({checked: false});
|
|
$('#opendiscussion').attr('disabled',true);
|
|
}
|
|
else {
|
|
$('#opendisc').removeClass('buttondisabled');
|
|
$('#opendiscussion').removeAttr('disabled');
|
|
}
|
|
});
|
|
|
|
// Display status returned by php code if any (eg. Paste was properly deleted.)
|
|
if ($('#status').text().length > 0) {
|
|
showStatus($('#status').text(),false);
|
|
return;
|
|
}
|
|
|
|
$('#status').html(' '); // Keep line height even if content empty.
|
|
|
|
// Display an existing paste
|
|
if ($('#cipherdata').text().length > 1) {
|
|
// Missing decryption key in URL ?
|
|
if (window.location.hash.length == 0) {
|
|
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;
|
|
}
|
|
|
|
// List of messages to display
|
|
var messages = jQuery.parseJSON($('#cipherdata').text());
|
|
|
|
// Show proper elements on screen.
|
|
stateExistingPaste();
|
|
|
|
displayMessages(pageKey(), messages);
|
|
}
|
|
// Display error message from php code.
|
|
else if ($('#errormessage').text().length>1) {
|
|
showError($('#errormessage').text());
|
|
}
|
|
// Create a new paste.
|
|
else {
|
|
newPaste();
|
|
}
|
|
});
|