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refactoring zerobin js, adding JSDoc

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This commit is contained in:
Thierry Poinot 2012-04-22 12:45:45 +02:00
parent 52630374e5
commit d92d8658a5
1 changed files with 303 additions and 205 deletions
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508
lib/zerobin.js
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@ -1,9 +1,19 @@
/* ZeroBin 0.15 - http://sebsauvage.net/wiki/doku.php?id=php:zerobin */
/**
* ZeroBin 0.15
*
* @link http://sebsauvage.net/wiki/doku.php?id=php:zerobin
* @author sebsauvage
*/
// Immediately start random number generator collector.
sjcl.random.startCollectors();
// Converts a duration (in seconds) into human readable format.
/**
* Converts a duration (in seconds) into human readable format.
*
* @param int seconds
* @return string
*/
function secondsToHuman(seconds)
{
if (seconds<60) { var v=Math.floor(seconds); return v+' second'+((v>1)?'s':''); }
@ -13,217 +23,269 @@ function secondsToHuman(seconds)
if (seconds<60*60*24*60) { var v=Math.floor(seconds/(60*60*24)); return v+' day'+((v>1)?'s':''); }
var v=Math.floor(seconds/(60*60*24*30)); return v+' month'+((v>1)?'s':'');
}
// Compress a message (deflate compression). Returns base64 encoded data.
function compress(message) { return Base64.toBase64(RawDeflate.deflate(Base64.utob(message))); }
// Decompress a message compressed with compress().
function decompress(data) { return Base64.btou(RawDeflate.inflate(Base64.fromBase64(data))) }
/**
* Compress a message (deflate compression). Returns base64 encoded data.
*
* @param string message
* @return base64 string data
*/
function compress(message) {
return Base64.toBase64( RawDeflate.deflate( Base64.utob(message) ) );
}
// Compress, then encrypt message with key.
function zeroCipher(key,message)
{
/**
* Decompress a message compressed with compress().
*/
function decompress(data) {
return Base64.btou( RawDeflate.inflate( Base64.fromBase64(data) ) );
}
/**
* Compress, then encrypt message with key.
*
* @param string key
* @param string message
* @return encrypted string data
*/
function zeroCipher(key, message) {
return sjcl.encrypt(key,compress(message));
}
// Decrypt message with key, then decompress.
function zeroDecipher(key,data)
{
/**
* Decrypt message with key, then decompress.
*
* @param key
* @param encrypted string data
* @return string readable message
*/
function zeroDecipher(key, data) {
return decompress(sjcl.decrypt(key,data));
}
// Returns the current script location (without search or hash part of the URL).
// eg. http://server.com/zero/?aaaa#bbbb --> http://server.com/zero/
function scriptLocation()
{
/**
* @return the current script location (without search or hash part of the URL).
* eg. http://server.com/zero/?aaaa#bbbb --> http://server.com/zero/
*/
function scriptLocation() {
return window.location.href.substring(0,window.location.href.length
-window.location.search.length -window.location.hash.length);
}
// Returns the paste unique identifier from the URL
// eg. 'c05354954c49a487'
function pasteID()
{
/**
* @return the paste unique identifier from the URL
* eg. 'c05354954c49a487'
*/
function pasteID() {
return window.location.search.substring(1);
}
// Set text of a DOM element (required for IE)
// This is equivalent to element.text(text)
// Input: element : a DOM element.
// text : the text to enter.
function setElementText(element,text)
{
if ($('div#oldienotice').is(":visible")) // For IE<10.
{
/**
* Set text of a DOM element (required for IE)
* This is equivalent to element.text(text)
* @param object element : a DOM element.
* @param string text : the text to enter.
*/
function setElementText(element, text) {
// For IE<10.
if ($('div#oldienotice').is(":visible")) {
// IE<10 do not support white-space:pre-wrap; so we have to do this BIG UGLY STINKING THING.
element.text(text.replace(/\n/ig,'{BIG_UGLY_STINKING_THING__OH_GOD_I_HATE_IE}'));
element.html(element.text().replace(/{BIG_UGLY_STINKING_THING__OH_GOD_I_HATE_IE}/ig,"\r\n<br>"));
}
else // for other (sane) browsers:
{
// for other (sane) browsers:
else {
element.text(text);
}
}
// Show decrypted text in the display area, including discussion (if open)
// Input: messages (Array) : Array of messages to display (items = array with keys ('data','meta')
// key (string): decryption key
function displayMessages(key,comments)
{
/**
* Show decrypted text in the display area, including discussion (if open)
*
* @param string key : decryption key
* @param array comments : Array of messages to display (items = array with keys ('data','meta')
*/
function displayMessages(key, comments) {
try { // Try to decrypt the paste.
var cleartext = zeroDecipher(key,comments[0].data);
var cleartext = zeroDecipher(key, comments[0].data);
} catch(err) {
$('div#cleartext').hide();
$('button#clonebutton').hide();
showError('Could not decrypt data (Wrong key ?)');
return;
}
setElementText($('div#cleartext'),cleartext);
setElementText($('div#cleartext'), cleartext);
urls2links($('div#cleartext')); // Convert URLs to clickable links.
// Display paste expiration.
if (comments[0].meta.expire_date) $('div#remainingtime').removeClass('foryoureyesonly').text('This document will expire in '+secondsToHuman(comments[0].meta.remaining_time)+'.').show();
if (comments[0].meta.burnafterreading)
{
if (comments[0].meta.burnafterreading) {
$('div#remainingtime').addClass('foryoureyesonly').text('FOR YOUR EYES ONLY. Don\'t close this window, this message can\'t be displayed again.').show();
$('button#clonebutton').hide(); // Discourage cloning (as it can't really be prevented).
}
// If the discussion is opened on this paste, display it.
if (comments[0].meta.opendiscussion)
{
if (comments[0].meta.opendiscussion) {
$('div#comments').html('');
for (var i = 1; i < comments.length; i++) // For each comment.
{
// For each comment.
for (var i = 1; i < comments.length; i++) {
var comment=comments[i];
var cleartext="[Could not decrypt comment ; Wrong key ?]";
try { cleartext = zeroDecipher(key,comment.data); } catch(err) { }
try {
cleartext = zeroDecipher(key, comment.data);
} catch(err) { }
var place = $('div#comments');
// If parent comment exists, display below (CSS will automatically shift it right.)
var cname = 'div#comment_'+comment.meta.parentid
if ($(cname).length) place = $(cname); // If the element exists in page
var divComment = $('<div class="comment" id="comment_'+comment.meta.commentid+'">'
+'<div class="commentmeta"><span class="nickname"></span><span class="commentdate"></span></div><div class="commentdata"></div>'
+'<button onclick="open_reply($(this),\''+comment.meta.commentid+'\');return false;">Reply</button>'
+'</div>');
setElementText(divComment.find('div.commentdata'),cleartext);
urls2links(divComment.find('div.commentdata')); // Convert URLs to clickable links in comment.
// If the element exists in page
if ($(cname).length) {
place = $(cname);
}
var divComment = $('<div class="comment" id="comment_' + comment.meta.commentid+'">'
+ '<div class="commentmeta"><span class="nickname"></span><span class="commentdate"></span></div><div class="commentdata"></div>'
+ '<button onclick="open_reply($(this),\'' + comment.meta.commentid + '\');return false;">Reply</button>'
+ '</div>');
setElementText(divComment.find('div.commentdata'), cleartext);
// Convert URLs to clickable links in comment.
urls2links(divComment.find('div.commentdata'));
divComment.find('span.nickname').html('<i>(Anonymous)</i>');
// Try to get optional nickname:
try { divComment.find('span.nickname').text(zeroDecipher(key,comment.meta.nickname));} catch(err) { }
divComment.find('span.commentdate').text(' ('+(new Date(comment.meta.postdate*1000).toUTCString())+')').attr('title','CommentID: '+comment.meta.commentid);
try {
divComment.find('span.nickname').text(zeroDecipher(key, comment.meta.nickname));
} catch(err) { }
divComment.find('span.commentdate').text(' ('+(new Date(comment.meta.postdate*1000).toUTCString())+')').attr('title','CommentID: ' + comment.meta.commentid);
// If an avatar is available, display it.
if (comment.meta.vizhash)
divComment.find('span.nickname').before('<img src="'+comment.meta.vizhash+'" class="vizhash" title="Anonymous avatar (Vizhash of the IP address)" />');
if (comment.meta.vizhash) {
divComment.find('span.nickname').before('<img src="' + comment.meta.vizhash + '" class="vizhash" title="Anonymous avatar (Vizhash of the IP address)" />');
}
place.append(divComment);
}
$('div#comments').append('<div class="comment"><button onclick="open_reply($(this),\''+pasteID()+'\');return false;">Add comment</button></div>');
$('div#comments').append('<div class="comment"><button onclick="open_reply($(this),\'' + pasteID() + '\');return false;">Add comment</button></div>');
$('div#discussion').show();
}
}
// Open the comment entry when clicking the "Reply" button of a comment.
// source = element which emitted the event.
// commentid = identifier of the comment we want to reply to.
function open_reply(source,commentid)
{
/**
* 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.
*/
function open_reply(source, commentid) {
$('div.reply').remove(); // Remove any other reply area.
source.after('<div class="reply">'
+'<input type="text" id="nickname" title="Optional nickname..." value="Optional nickname..." />'
+'<textarea id="replymessage" class="replymessage" cols="80" rows="7"></textarea>'
+'<br><button id="replybutton" onclick="send_comment(\''+commentid+'\');return false;">Post comment</button>'
+'<div id="replystatus">&nbsp;</div>'
+'</div>');
+ '<input type="text" id="nickname" title="Optional nickname..." value="Optional nickname..." />'
+ '<textarea id="replymessage" class="replymessage" cols="80" rows="7"></textarea>'
+ '<br><button id="replybutton" onclick="send_comment(\'' + commentid + '\');return false;">Post comment</button>'
+ '<div id="replystatus">&nbsp;</div>'
+ '</div>');
$('input#nickname').focus(function() {
$(this).css('color', '#000');
if($(this).val()==$(this).attr('title')) $(this).val('');
});
$(this).css('color', '#000');
if ($(this).val() == $(this).attr('title')) {
$(this).val('');
}
});
$('textarea#replymessage').focus();
}
// Send a reply in a discussion.
// Input: parentid : the comment identifier we want to send a reply to.
function send_comment(parentid)
{
if ($('textarea#replymessage').val().length==0) return; // Do not send if no data.
showStatus('Sending comment...',spin=true);
var cipherdata=zeroCipher(pageKey(), $('textarea#replymessage').val());
var ciphernickname='';
/**
* Send a reply in a discussion.
* @param string parentid : the comment identifier we want to send a reply to.
*/
function send_comment(parentid) {
// Do not send if no data.
if ($('textarea#replymessage').val().length==0) {
return;
}
showStatus('Sending comment...', spin=true);
var cipherdata = zeroCipher(pageKey(), $('textarea#replymessage').val());
var ciphernickname = '';
var nick=$('input#nickname').val();
if (nick!='' && nick!='Optional nickname...') ciphernickname=ciphernickname=zeroCipher(pageKey(),nick);
var data_to_send = { data:cipherdata,
parentid: parentid,
pasteid: pasteID(),
nickname: ciphernickname
};
$.post(scriptLocation(), data_to_send ,'json' )
.error( function() { showError('Comment could not be sent (serveur error or not responding).'); } )
.success(function(data)
{
if (data.status==0)
{
showStatus('Comment posted.');
location.reload();
}
else if (data.status==1)
{
showError('Could not post comment: '+data.message);
}
else
{
showError('Could not post comment.');
}
}
);
if (nick != '' && nick != 'Optional nickname...') {
ciphernickname = ciphernickname = zeroCipher(pageKey(), nick);
}
var data_to_send = { data:cipherdata,
parentid: parentid,
pasteid: pasteID(),
nickname: ciphernickname
};
$
.post(scriptLocation(), data_to_send, 'json')
.error(function() {
showError('Comment could not be sent (serveur error or not responding).');
})
.success(function(data) {
if (data.status == 0) {
showStatus('Comment posted.');
location.reload();
}
else if (data.status==1) {
showError('Could not post comment: '+data.message);
}
else {
showError('Could not post comment.');
}
});
}
/**
* Send a new paste to server
*/
function send_data() {
// Do not send if no data.
if ($('textarea#message').val().length == 0) {
return;
}
showStatus('Sending paste...', spin=true);
var randomkey = sjcl.codec.base64.fromBits(sjcl.random.randomWords(8, 0), 0);
var cipherdata = zeroCipher(randomkey, $('textarea#message').val());
var data_to_send = { data: cipherdata,
expire: $('select#pasteExpiration').val(),
opendiscussion: $('input#opendiscussion').is(':checked') ? 1 : 0
};
$
.post(scriptLocation(), data_to_send, 'json')
.error(function() {
showError('Data could not be sent (serveur error or not responding).');
})
.success(function(data) {
if (data.status == 0) {
stateExistingPaste();
var url = scriptLocation() + "?" + data.id + '#' + randomkey;
showStatus('');
$('div#pastelink').html('Your paste is <a href="' + url + '">' + url + '</a>');
$('div#pastelink')
.append('&nbsp;&nbsp;<button id="shortenbutton" onclick="document.location=\'' + shortenUrl(url) + '\'"><img src="lib/icon_shorten.png" width="13" height="15" />Shorten URL</button>')
.show();
setElementText($('div#cleartext'), $('textarea#message').val());
urls2links($('div#cleartext'));
showStatus('');
}
else if (data.status==1) {
showError('Could not create paste: '+data.message);
}
else {
showError('Could not create paste.');
}
});
}
// Send a new paste to server
function send_data()
{
if ($('textarea#message').val().length==0) return; // Do not send if no data.
showStatus('Sending paste...',spin=true);
var randomkey = sjcl.codec.base64.fromBits(sjcl.random.randomWords(8,0),0);
var cipherdata = zeroCipher(randomkey,$('textarea#message').val());
var data_to_send = { data:cipherdata,
expire:$('select#pasteExpiration').val(),
opendiscussion:$('input#opendiscussion').is(':checked')?1:0
};
$.post(scriptLocation(), data_to_send ,'json' )
.error( function() { showError('Data could not be sent (serveur error or not responding).'); } )
.success(function(data)
{
if (data.status==0)
{
stateExistingPaste();
var url=scriptLocation()+"?"+data.id+'#'+randomkey;
showStatus('');
$('div#pastelink').html('Your paste is <a href="'+url+'">'+url+'</a>');
$('div#pastelink').append('&nbsp;&nbsp;<button id="shortenbutton" onclick="document.location=\''+shortenUrl(url)+'\'"><img src="lib/icon_shorten.png" width="13" height="15" />Shorten URL</button>').show();
setElementText($('div#cleartext'),$('textarea#message').val());
urls2links($('div#cleartext'));
showStatus('');
}
else if (data.status==1)
{
showError('Could not create paste: '+data.message);
}
else
{
showError('Could not create paste.');
}
}
);
}
// Put the screen in "New paste" mode.
function stateNewPaste()
{
$('button#sendbutton').show();
$('button#clonebutton').hide();
/**
* Put the screen in "New paste" mode.
*/
function stateNewPaste() {
$('#sendbutton').show();
$('#clonebutton').hide();
$('div#expiration').show();
$('div#remainingtime').hide();
$('div#language').hide(); // $('#language').show();
$('input#password').hide(); //$('#password').show();
$('div#opendisc').show();
$('button#newbutton').show();
$('#newbutton').show();
$('div#pastelink').hide();
$('textarea#message').text('');
$('textarea#message').show();
@ -232,90 +294,116 @@ function stateNewPaste()
$('div#discussion').hide();
}
// Put the screen in "Existing paste" mode.
function stateExistingPaste()
{
$('button#sendbutton').hide();
if (!$('div#oldienotice').is(":visible")) $('button#clonebutton').show(); // No "clone" for IE<10.
$('button#clonebutton').show();// FIXME
/**
* Put the screen in "Existing paste" mode.
*/
function stateExistingPaste() {
$('#sendbutton').hide();
// No "clone" for IE<10.
if (!$('div#oldienotice').is(":visible")) {
$('button#clonebutton').show();
}
/**
* @FIXME
*/
$('#clonebutton').show();
$('div#expiration').hide();
$('div#language').hide();
$('input#password').hide();
$('div#opendisc').hide();
$('button#newbutton').show();
$('#newbutton').show();
$('div#pastelink').hide();
$('textarea#message').hide();
$('div#cleartext').show();
}
// Clone the current paste.
function clonePaste()
{
/**
* Clone the current paste.
*/
function clonePaste() {
stateNewPaste();
showStatus('');
$('textarea#message').text($('div#cleartext').text());
}
// Create a new paste.
function newPaste()
{
/**
* Create a new paste.
*/
function newPaste() {
stateNewPaste();
showStatus('');
$('textarea#message').text('');
}
// Display an error message
// (We use the same function for paste and reply to comments)
function showError(message)
{
/**
* Display an error message
* (We use the same function for paste and reply to comments)
*/
function showError(message) {
$('div#status').addClass('errorMessage').text(message);
$('div#replystatus').addClass('errorMessage').text(message);
}
// Display status
// (We use the same function for paste and reply to comments)
// message (string) = text to display
// spin (boolean, optional) = tell if the "spinning" animation should be displayed.
function showStatus(message,spin)
{
/**
* Display status
* (We use the same function for paste and reply to comments)
*
* @param string message : text to display
* @param boolean spin (optional) : tell if the "spinning" animation should be displayed.
*/
function showStatus(message, spin) {
$('div#replystatus').removeClass('errorMessage');
$('div#replystatus').text(message);
if (!message) { $('div#status').html('&nbsp'); return; }
if (message=='') { $('div#status').html('&nbsp'); return; }
if (!message) {
$('div#status').html('&nbsp');
return;
}
if (message == '') {
$('div#status').html('&nbsp');
return;
}
$('div#status').removeClass('errorMessage');
$('div#status').text(message);
if (spin)
{
var img = '<img src="lib/busy.gif" style="width:16px;height:9px;margin:0px 4px 0px 0px;" />';
if (spin) {
var img = '<img src="img/busy.gif" style="width:16px;height:9px;margin:0px 4px 0px 0px;" />';
$('div#status').prepend(img);
$('div#replystatus').prepend(img);
}
}
// Generate link to URL shortener.
function shortenUrl(url)
{
return 'http://snipurl.com/site/snip?link='+encodeURIComponent(url);
/**
* Generate link to URL shortener.
*/
function shortenUrl(url) {
return 'http://snipurl.com/site/snip?link=' + encodeURIComponent(url);
}
// Convert URLs to clickable links.
// Input: element : a jQuery DOM element.
// Example URLs to handle:
// 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=
// FIXME: add ppa & apt links.
function urls2links(element)
{
/**
* 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()
{
/**
* 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
@ -334,31 +422,41 @@ function pageKey()
return key;
}
$(document).ready(function() {
$(function() {
$('select#pasteExpiration').change(function() {
if ($(this).val()=='burn') { $('div#opendisc').addClass('buttondisabled'); $('input#opendiscussion').attr('disabled',true); }
else { $('div#opendisc').removeClass('buttondisabled'); $('input#opendiscussion').removeAttr('disabled'); }
if ($(this).val() == 'burn') {
$('div#opendisc').addClass('buttondisabled');
$('input#opendiscussion').attr('disabled',true);
}
else {
$('div#opendisc').removeClass('buttondisabled');
$('input#opendiscussion').removeAttr('disabled');
}
});
if ($('div#cipherdata').text().length>1) // Display an existing paste
{
if (window.location.hash.length==0) // Missing decryption key in URL ?
{
// Display an existing paste
if ($('div#cipherdata').text().length > 1) {
// Missing decryption key in URL ?
if (window.location.hash.length == 0) {
showError('Cannot decrypt paste: Decryption key missing in URL (Did you use a redirector or an URL shortener which strips part of the URL ?)');
return;
}
var messages = jQuery.parseJSON($('div#cipherdata').text()); // List of messages to display
stateExistingPaste(); // Show proper elements on screen.
displayMessages(pageKey(),messages);
// List of messages to display
var messages = jQuery.parseJSON($('div#cipherdata').text());
// Show proper elements on screen.
stateExistingPaste();
displayMessages(pageKey(), messages);
}
else if ($('div#errormessage').text().length>1) // Display error message from php code.
{
// Display error message from php code.
else if ($('div#errormessage').text().length>1) {
showError($('div#errormessage').text());
}
else // Create a new paste.
{
// Create a new paste.
else {
newPaste();
}
});