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refactored JSON API, its now possible to retrieve pastes as JSON, which

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is now used when posting comments, eliminating the need to store the
password in sessionStorage
This commit is contained in:
El RIDO 2015-09-01 22:33:07 +02:00
parent ded24b43ab
commit b25022e403
3 changed files with 157 additions and 70 deletions
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48
js/zerobin.js
View file

@ -213,11 +213,6 @@ 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";
@ -327,7 +322,7 @@ function send_comment(parentid) {
showStatus('Sending comment...', spin=true);
var cipherdata = zeroCipher(pageKey(), $('#replymessage').val());
var ciphernickname = '';
var nick=$('#nickname').val();
var nick = $('#nickname').val();
if (nick != '' && nick != 'Optional nickname...') {
ciphernickname = zeroCipher(pageKey(), nick);
}
@ -337,29 +332,38 @@ function send_comment(parentid) {
nickname: ciphernickname
};
$.post(scriptLocation(), data_to_send, 'json')
.error(function() {
showError('Comment could not be sent (server error or not responding).');
})
.success(function(data) {
$.post(scriptLocation(), data_to_send, function(data) {
if (data.status == 0) {
showStatus('Comment posted.');
// store password temporarily between page loads
if ($('#passwordinput').val().length > 0 && window.sessionStorage) {
sessionStorage.setItem(pageKey(), $('#passwordinput').val());
}
location.reload();
$.get(scriptLocation() + "?" + pasteID() + "&json", function(data) {
if (data.status == 0) {
displayMessages(pageKey(), data.messages);
}
else if (data.status == 1) {
showError('Could not refresh display: ' + data.message);
}
else
{
showError('Could not refresh display: unknown status');
}
}, 'json')
.fail(function() {
showError('Could not refresh display (server error or not responding).');
});
}
else if (data.status==1) {
showError('Could not post comment: '+data.message);
else if (data.status == 1) {
showError('Could not post comment: ' + data.message);
}
else {
showError('Could not post comment.');
else
{
showError('Could not post comment: unknown status');
}
}, 'json')
.fail(function() {
showError('Comment could not be sent (server error or not responding).');
});
}
/**
* Send a new paste to server
*/
@ -407,7 +411,7 @@ function send_data() {
if (typeof prettyPrint == 'function') prettyPrint();
}
else if (data.status==1) {
showError('Could not create paste: '+data.message);
showError('Could not create paste: ' + data.message);
}
else {
showError('Could not create paste.');

163
lib/zerobin.php
View file

@ -65,6 +65,14 @@ class zerobin
*/
private $_status = '';
/**
* JSON message
*
* @access private
* @var string
*/
private $_json = '';
/**
* data storage model
*
@ -84,7 +92,9 @@ class zerobin
public function __construct()
{
if (version_compare(PHP_VERSION, '5.2.6') < 0)
{
throw new Exception('ZeroBin requires php 5.2.6 or above to work. Sorry.', 1);
}
// in case stupid admin has left magic_quotes enabled in php.ini
if (get_magic_quotes_gpc())
@ -100,17 +110,12 @@ class zerobin
// create new paste or comment
if (!empty($_POST['data']))
{
echo $this->_create($_POST['data']);
return;
$this->_create($_POST['data']);
}
// delete an existing paste
elseif (!empty($_GET['deletetoken']) && !empty($_GET['pasteid']))
{
$result = $this->_delete($_GET['pasteid'], $_GET['deletetoken']);
if (strlen($result)) {
echo $result;
return;
}
$this->_delete($_GET['pasteid'], $_GET['deletetoken']);
}
// display an existing paste
elseif (!empty($_SERVER['QUERY_STRING']))
@ -118,8 +123,16 @@ class zerobin
$this->_read($_SERVER['QUERY_STRING']);
}
// display ZeroBin frontend
$this->_view();
// output JSON or HTML
if (strlen($this->_json))
{
header('Content-type: application/json');
echo $this->_json;
}
else
{
$this->_view();
}
}
/**
@ -186,31 +199,34 @@ class zerobin
*/
private function _create($data)
{
header('Content-type: application/json');
$error = false;
// Make sure last paste from the IP address was more than X seconds ago.
trafficlimiter::setLimit($this->_conf['traffic']['limit']);
trafficlimiter::setPath($this->_conf['traffic']['dir']);
if (
!trafficlimiter::canPass($_SERVER['REMOTE_ADDR'])
) return $this->_return_message(
1,
'Please wait ' .
$this->_conf['traffic']['limit'] .
' seconds between each post.'
);
if (!trafficlimiter::canPass($_SERVER['REMOTE_ADDR']))
{
$this->_return_message(
1,
'Please wait ' .
$this->_conf['traffic']['limit'] .
' seconds between each post.'
);
return;
}
// Make sure content is not too big.
$sizelimit = (int) $this->_getMainConfig('sizelimit', 2097152);
if (
strlen($data) > $sizelimit
) return $this->_return_message(
1,
'Paste is limited to ' .
filter::size_humanreadable($sizelimit) .
' of encrypted data.'
);
if (strlen($data) > $sizelimit)
{
$this->_return_message(
1,
'Paste is limited to ' .
filter::size_humanreadable($sizelimit) .
' of encrypted data.'
);
return;
}
// Make sure format is correct.
if (!sjcl::isValid($data)) return $this->_return_message(1, 'Invalid data.');
@ -280,7 +296,11 @@ class zerobin
}
}
if ($error) return $this->_return_message(1, 'Invalid data.');
if ($error)
{
$this->_return_message(1, 'Invalid data.');
return;
}
// Add post date to meta.
$meta['postdate'] = time();
@ -305,7 +325,11 @@ class zerobin
if (
!filter::is_valid_paste_id($pasteid) ||
!filter::is_valid_paste_id($parentid)
) return $this->_return_message(1, 'Invalid data.');
)
{
$this->_return_message(1, 'Invalid data.');
return;
}
// Comments do not expire (it's the paste that expires)
unset($storage['expire_date']);
@ -314,26 +338,43 @@ class zerobin
// Make sure paste exists.
if (
!$this->_model()->exists($pasteid)
) return $this->_return_message(1, 'Invalid data.');
)
{
$this->_return_message(1, 'Invalid data.');
return;
}
// Make sure the discussion is opened in this paste.
$paste = $this->_model()->read($pasteid);
if (
!$paste->meta->opendiscussion
) return $this->_return_message(1, 'Invalid data.');
)
{
$this->_return_message(1, 'Invalid data.');
return;
}
// Check for improbable collision.
if (
$this->_model()->existsComment($pasteid, $parentid, $dataid)
) return $this->_return_message(1, 'You are unlucky. Try again.');
)
{
$this->_return_message(1, 'You are unlucky. Try again.');
return;
}
// New comment
if (
$this->_model()->createComment($pasteid, $parentid, $dataid, $storage) === false
) return $this->_return_message(1, 'Error saving comment. Sorry.');
)
{
$this->_return_message(1, 'Error saving comment. Sorry.');
return;
}
// 0 = no error
return $this->_return_message(0, $dataid);
$this->_return_message(0, $dataid);
return;
}
// The user posts a standard paste.
else
@ -341,12 +382,19 @@ class zerobin
// Check for improbable collision.
if (
$this->_model()->exists($dataid)
) return $this->_return_message(1, 'You are unlucky. Try again.');
)
{
$this->_return_message(1, 'You are unlucky. Try again.');
return;
}
// New paste
if (
$this->_model()->create($dataid, $storage) === false
) return $this->_return_message(1, 'Error saving paste. Sorry.');
) {
$this->_return_message(1, 'Error saving paste. Sorry.');
return;
}
// Generate the "delete" token.
// The token is the hmac of the pasteid signed with the server salt.
@ -354,10 +402,9 @@ class zerobin
$deletetoken = hash_hmac('sha1', $dataid, serversalt::get());
// 0 = no error
return $this->_return_message(0, $dataid, array('deletetoken' => $deletetoken));
$this->_return_message(0, $dataid, array('deletetoken' => $deletetoken));
return;
}
return $this->_return_message(1, 'Server error.');
}
/**
@ -366,7 +413,7 @@ class zerobin
* @access private
* @param string $dataid
* @param string $deletetoken
* @return string
* @return void
*/
private function _delete($dataid, $deletetoken)
{
@ -374,14 +421,14 @@ class zerobin
if (!filter::is_valid_paste_id($dataid))
{
$this->_error = 'Invalid paste ID.';
return '';
return;
}
// Check that paste exists.
if (!$this->_model()->exists($dataid))
{
$this->_error = self::GENERIC_ERROR;
return '';
return;
}
// Get the paste itself.
@ -396,10 +443,10 @@ class zerobin
// Delete the paste
$this->_model()->delete($dataid);
$this->_error = self::GENERIC_ERROR;
return;
}
if ($deletetoken == 'burnafterreading') {
header('Content-type: application/json');
if (
isset($paste->meta->burnafterreading) &&
$paste->meta->burnafterreading
@ -407,9 +454,13 @@ class zerobin
{
// Delete the paste
$this->_model()->delete($dataid);
return $this->_return_message(0, 'Paste was properly deleted.');
$this->_return_message(0, 'Paste was properly deleted.');
}
return $this->_return_message(1, 'Paste is not of burn-after-reading type.');
else
{
$this->_return_message(1, 'Paste is not of burn-after-reading type.');
}
return;
}
// Make sure token is valid.
@ -417,13 +468,12 @@ class zerobin
if (!filter::slow_equals($deletetoken, hash_hmac('sha1', $dataid, serversalt::get())))
{
$this->_error = 'Wrong deletion token. Paste was not deleted.';
return '';
return;
}
// Paste exists and deletion token is valid: Delete the paste.
$this->_model()->delete($dataid);
$this->_status = 'Paste was properly deleted.';
return '';
}
/**
@ -435,6 +485,12 @@ class zerobin
*/
private function _read($dataid)
{
$isJson = false;
if (($pos = strpos($dataid, '&json')) !== false) {
$isJson = true;
$dataid = substr($dataid, 0, $pos);
}
// Is this a valid paste identifier?
if (!filter::is_valid_paste_id($dataid))
{
@ -487,6 +543,17 @@ class zerobin
{
$this->_error = self::GENERIC_ERROR;
}
if ($isJson)
{
if (strlen($this->_error))
{
$this->_return_message(1, $this->_error);
}
else
{
$this->_return_message(0, $dataid, array('messages' => $messages));
}
}
}
/**
@ -555,7 +622,7 @@ class zerobin
* @param bool $status
* @param string $message
* @param array $other
* @return string
* @return void
*/
private function _return_message($status, $message, $other = array())
{
@ -569,6 +636,6 @@ class zerobin
$result['id'] = $message;
}
$result += $other;
return json_encode($result);
$this->_json = json_encode($result);
}
}

16
tst/zerobin.php
View file

@ -437,6 +437,22 @@ class zerobinTest extends PHPUnit_Framework_TestCase
);
}
/**
* @runInSeparateProcess
*/
public function testReadJson()
{
$this->reset();
$this->_model->create(self::$pasteid, self::$paste);
$_SERVER['QUERY_STRING'] = self::$pasteid . '&json';
ob_start();
new zerobin;
$content = ob_get_contents();
$response = json_decode($content, true);
$this->assertEquals(0, $response['status'], 'outputs success status');
$this->assertEquals(array(self::$paste), $response['messages'], 'outputs data correctly');
}
/**
* @runInSeparateProcess
*/