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working on password function for #15:

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- asking again if password is wrong
- display error if user cancels dialog
- use password to encrypt comments, too (password is "stored" in the
password field)
- store password in sessionStorage when posting a comment so, that it
doesn't have to typed in again, but clear sessionStorage as soon as
password is retrieved
This commit is contained in:
El RIDO 2015-08-31 21:14:12 +02:00
parent d3c4600806
commit 9fdbba76ce
1 changed files with 75 additions and 32 deletions
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79
js/zerobin.js
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@ -37,7 +37,7 @@ function secondsToHuman(seconds)
*/
function hashToParameterString(associativeArray)
{
var parameterString = ""
var parameterString = "";
for (key in associativeArray)
{
if( parameterString === "" )
@ -80,7 +80,7 @@ function parameterStringToHash(parameterString)
* Get an associative array of the parameters found in the anchor
*
* @return object
**/
*/
function getParameterHash()
{
var hashIndex = window.location.href.indexOf("#");
@ -116,16 +116,16 @@ function decompress(data) {
* @return encrypted string data
*/
function zeroCipher(key, message) {
if ($('input#passwordinput').val().length == 0) {
if ($('#passwordinput').val().length == 0) {
return sjcl.encrypt(key, compress(message));
}
return sjcl.encrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash($("input#passwordinput").val())), compress(message));
return sjcl.encrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash($("#passwordinput").val())), compress(message));
}
/**
* Decrypt message with key, then decompress.
*
* @param key
* @param string key
* @param encrypted string data
* @return string readable message
*/
@ -134,40 +134,62 @@ function zeroDecipher(key, data) {
try {
return decompress(sjcl.decrypt(key, data));
} catch (err) {
var password = prompt("Please enter the password for this paste:", "");
return decompress(sjcl.decrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(password)), data));
try {
if ($('#passwordinput').val().length > 0) {
password = $('#passwordinput').val();
} else {
password = prompt("Please enter the password for this paste:", "");
if (password == null) return null;
}
data = decompress(sjcl.decrypt(key + sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(password)), data));
$('#passwordinput').val(password);
return data;
} catch (err) {
return zeroDecipher(key, data);
}
}
}
}
/**
* @return the current script location (without search or hash part of the URL).
* Get the current script location (without search or hash part of the URL).
* eg. http://server.com/zero/?aaaa#bbbb --> http://server.com/zero/
*
* @return string current script location
*/
function scriptLocation() {
var scriptLocation = window.location.href.substring(0,window.location.href.length
- window.location.search.length - window.location.hash.length);
var hashIndex = scriptLocation.indexOf("#");
if (hashIndex !== -1) {
scriptLocation = scriptLocation.substring(0, hashIndex)
scriptLocation = scriptLocation.substring(0, hashIndex);
}
return scriptLocation
return scriptLocation;
}
/**
* @return the paste unique identifier from the URL
* eg. 'c05354954c49a487'
* Get the pastes unique identifier from the URL
* eg. http://server.com/zero/?c05354954c49a487#xxx --> c05354954c49a487
*
* @return string unique identifier
*/
function pasteID() {
return window.location.search.substring(1);
}
/**
* Convert all applicable characters to HTML entities
*
* @param string str
* @returns string encoded string
*/
function htmlEntities(str) {
return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
}
/**
* Set text of a DOM element (required for IE)
* This is equivalent to element.text(text)
*
* @param object element : a DOM element.
* @param string text : the text to enter.
*/
@ -191,8 +213,14 @@ function setElementText(element, text) {
* @param array comments : Array of messages to display (items = array with keys ('data','meta')
*/
function displayMessages(key, comments) {
// restore password if set in previous visit, then clear the session
if (window.sessionStorage && sessionStorage.getItem(pageKey())) {
$('#passwordinput').val(sessionStorage.getItem(pageKey()));
sessionStorage.clear();
}
try { // Try to decrypt the paste.
var cleartext = zeroDecipher(key, comments[0].data);
if (cleartext == null) throw "password prompt canceled";
} catch(err) {
$('#cleartext').addClass('hidden');
$('#prettymessage').addClass('hidden');
@ -217,7 +245,7 @@ function displayMessages(key, comments) {
// If the discussion is opened on this paste, display it.
if (comments[0].meta.opendiscussion) {
$('#comments').html('');
// For each comment.
// iterate over comments
for (var i = 1; i < comments.length; i++) {
var comment=comments[i];
var cleartext="[Could not decrypt comment ; Wrong key ?]";
@ -226,7 +254,7 @@ function displayMessages(key, comments) {
} catch(err) { }
var place = $('#comments');
// If parent comment exists, display below (CSS will automatically shift it right.)
var cname = '#comment_'+comment.meta.parentid
var cname = '#comment_'+comment.meta.parentid;
// If the element exists in page
if ($(cname).length) {
@ -261,6 +289,7 @@ function displayMessages(key, comments) {
/**
* Open the comment entry when clicking the "Reply" button of a comment.
*
* @param object source : element which emitted the event.
* @param string commentid = identifier of the comment we want to reply to.
*/
@ -282,6 +311,7 @@ function open_reply(source, commentid) {
/**
* Send a reply in a discussion.
*
* @param string parentid : the comment identifier we want to send a reply to.
*/
function send_comment(parentid) {
@ -310,6 +340,10 @@ function send_comment(parentid) {
.success(function(data) {
if (data.status == 0) {
showStatus('Comment posted.');
// store password temporarily between page loads
if ($('#passwordinput').val().length > 0 && window.sessionStorage) {
sessionStorage.setItem(pageKey(), $('#passwordinput').val());
}
location.reload();
}
else if (data.status==1) {
@ -381,8 +415,10 @@ function send_data() {
});
}
/** Text range selection.
/**
* Text range selection.
* From: http://stackoverflow.com/questions/985272/jquery-selecting-text-in-an-element-akin-to-highlighting-with-your-mouse
*
* @param string element : Indentifier of the element to select (id="").
*/
function selectText(element) {
@ -390,7 +426,7 @@ function selectText(element) {
, text = doc.getElementById(element)
, range, selection
;
if (doc.body.createTextRange) { //ms
if (doc.body.createTextRange) { // MS
range = doc.body.createTextRange();
range.moveToElementText(text);
range.select();
@ -451,7 +487,8 @@ function stateExistingPaste() {
$('#prettymessage').removeClass('hidden');
}
/** Return raw text
/**
* Return raw text
*/
function rawText()
{
@ -488,7 +525,11 @@ function newPaste() {
* (We use the same function for paste and reply to comments)
*/
function showError(message) {
if ($('#status').length) {
$('#status').addClass('errorMessage').text(message);
} else {
$('#errormessage').removeClass('hidden').append(message);
}
$('#replystatus').addClass('errorMessage').text(message);
}
@ -529,7 +570,6 @@ function showStatus(message, spin) {
* </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;
@ -560,6 +600,9 @@ function pageKey() {
return key;
}
/**
* main application start, called when DOM is fully loaded
*/
$(function() {
// hide "no javascript" message
$('#noscript').hide();