libre-service.eu/paste.libre-service.eu-privatebin
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fixing nasty deletion bug from #15, included unit tests to trigger it

Browse source 
and reworked persistence classes to through exceptions rather to fail
silently
This commit is contained in:
El RIDO 2015-08-27 21:41:21 +02:00
parent d042bb41ba
commit f775da3931
11 changed files with 334 additions and 134 deletions
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2
doc/README.md
View file

@ -10,7 +10,7 @@ Details about [installing phpDocumentor](http://phpdoc.org/docs/latest/getting-s
can be found in its own documentation.
Example for Debian and Ubuntu:
$ sudo aptitude install pear graphviz
$ sudo aptitude install php-pear graphviz
$ sudo pear channel-discover pear.phpdoc.org
$ sudo pear install phpdoc/phpDocumentor

23
lib/persistence.php
View file

@ -67,7 +67,7 @@ abstract class persistence
protected static function _exists($filename)
{
self::_initialize();
return is_file(self::$_path . '/' . $filename);
return is_file(self::$_path . DIRECTORY_SEPARATOR . $filename);
}
/**
@ -75,23 +75,29 @@ abstract class persistence
*
* @access protected
* @static
* @throws Exception
* @return void
*/
protected static function _initialize()
{
// Create storage directory if it does not exist.
if (!is_dir(self::$_path)) mkdir(self::$_path, 0705);
if (!is_dir(self::$_path))
if (!@mkdir(self::$_path))
throw new Exception('unable to create directory ' . self::$_path, 10);
// Create .htaccess file if it does not exist.
$file = self::$_path . '/.htaccess';
$file = self::$_path . DIRECTORY_SEPARATOR . '.htaccess';
if (!is_file($file))
{
file_put_contents(
$writtenBytes = @file_put_contents(
$file,
'Allow from none' . PHP_EOL .
'Deny from all'. PHP_EOL,
LOCK_EX
);
if ($writtenBytes === false || $writtenBytes < 30) {
throw new Exception('unable to write to file ' . $file, 11);
}
}
}
@ -102,14 +108,17 @@ abstract class persistence
* @static
* @param string $filename
* @param string $data
* @throws Exception
* @return string
*/
protected static function _store($filename, $data)
{
self::_initialize();
$file = self::$_path . '/' . $filename;
file_put_contents($file, $data, LOCK_EX);
chmod($file, 0705);
$file = self::$_path . DIRECTORY_SEPARATOR . $filename;
$writtenBytes = @file_put_contents($file, $data, LOCK_EX);
if ($writtenBytes === false || $writtenBytes < strlen($data)) {
throw new Exception('unable to write to file ' . $file, 13);
}
return $file;
}
}

39
lib/serversalt.php
View file

@ -47,12 +47,11 @@ class serversalt extends persistence
}
else // fallback to mt_rand()
{
for($i = 0; $i < 16; ++$i) {
for($i = 0; $i < 256; ++$i) {
$randomSalt .= base_convert(mt_rand(), 10, 16);
}
}
self::$_salt = $randomSalt;
return self::$_salt;
return $randomSalt;
}
/**
@ -60,21 +59,41 @@ class serversalt extends persistence
*
* @access public
* @static
* @throws Exception
* @return string
*/
public static function get()
{
if (strlen(self::$_salt)) return self::$_salt;
if (strlen(self::$_salt)) return self::$_salt;
$file = 'salt.php';
if (!self::_exists($file)) {
if (self::_exists($file)) {
$items = explode('|', @file_get_contents(self::getPath($file)));
if (!is_array($items) || count($items) != 3) {
throw new Exception('unable to read file ' . self::getPath($file), 20);
}
self::$_salt = $items[1];
} else {
self::$_salt = self::generate();
self::_store(
$file,
'<?php /* |'. self::generate() . '| */ ?>'
$file,
'<?php /* |'. self::$_salt . '| */ ?>'
);
}
$items = explode('|', file_get_contents(self::getPath($file)));
self::$_salt = $items[1];
return $items[1];
return self::$_salt;
}
/**
* set the path
*
* @access public
* @static
* @param string $path
* @return void
*/
public static function setPath($path)
{
self::$_salt = '';
parent::setPath($path);
}
}

1
lib/trafficlimiter.php
View file

@ -47,6 +47,7 @@ class trafficlimiter extends persistence
* @access public
* @static
* @param string $ip
* @throws Exception
* @return bool
*/
public static function canPass($ip)

5
lib/zerobin.php
View file

@ -339,7 +339,7 @@ class zerobin
// Generate the "delete" token.
// The token is the hmac of the pasteid signed with the server salt.
// The paste can be delete by calling http://myserver.com/zerobin/?pasteid=<pasteid>&deletetoken=<deletetoken>
$deletetoken = hash_hmac('sha1', $dataid , serversalt::get());
$deletetoken = hash_hmac('sha1', $dataid, serversalt::get());
// 0 = no error
$this->_return_message(0, $dataid, array('deletetoken' => $deletetoken));
@ -373,7 +373,8 @@ class zerobin
}
// Make sure token is valid.
if (filter::slow_equals($deletetoken, hash_hmac('sha1', $dataid , serversalt::get())))
serversalt::setPath($this->_conf['traffic']['dir']);
if (!filter::slow_equals($deletetoken, hash_hmac('sha1', $dataid, serversalt::get())))
{
$this->_error = 'Wrong deletion token. Paste was not deleted.';
return;

4
lib/zerobin/data.php
View file

@ -38,8 +38,8 @@ class zerobin_data extends zerobin_abstract
{
// if given update the data directory
if (
is_array($options) &&
array_key_exists('dir', $options)
is_array($options) &&
array_key_exists('dir', $options)
) self::$_dir = $options['dir'] . DIRECTORY_SEPARATOR;
// if needed initialize the singleton
if(!(self::$_instance instanceof zerobin_data)) {

18
lib/zerobin/db.php
View file

@ -80,13 +80,6 @@ class zerobin_db extends zerobin_abstract
array_key_exists('opt', $options)
)
{
self::$_db = new PDO(
$options['dsn'],
$options['usr'],
$options['pwd'],
$options['opt']
);
// check if the database contains the required tables
self::$_type = strtolower(
substr($options['dsn'], 0, strpos($options['dsn'], ':'))
@ -132,9 +125,16 @@ class zerobin_db extends zerobin_abstract
throw new Exception(
'PDO type ' .
self::$_type .
' is currently not supported.'
' is currently not supported.',
5
);
}
self::$_db = new PDO(
$options['dsn'],
$options['usr'],
$options['pwd'],
$options['opt']
);
$statement = self::$_db->query($sql);
$tables = $statement->fetchAll(PDO::FETCH_COLUMN, 0);
@ -266,7 +266,7 @@ class zerobin_db extends zerobin_abstract
array($pasteid)
);
if (
array_key_exists($pasteid, self::$_cache)
array_key_exists($pasteid, self::$_cache)
) unset(self::$_cache[$pasteid]);
}

34
tst/bootstrap.php
View file

@ -10,22 +10,22 @@ class helper
{
public static function rmdir($path)
{
$path .= DIRECTORY_SEPARATOR;
$dir = dir($path);
while(false !== ($file = $dir->read())) {
if($file != '.' && $file != '..') {
if(is_dir($path . $file)) {
self::rmdir($path . $file);
} elseif(is_file($path . $file)) {
if(!@unlink($path . $file)) {
throw new Exception('Error deleting file "' . $path . $file . '".');
}
}
}
}
$dir->close();
if(!@rmdir($path)) {
throw new Exception('Error deleting directory "' . $path . '".');
}
$path .= DIRECTORY_SEPARATOR;
$dir = dir($path);
while(false !== ($file = $dir->read())) {
if($file != '.' && $file != '..') {
if(is_dir($path . $file)) {
self::rmdir($path . $file);
} elseif(is_file($path . $file)) {
if(!@unlink($path . $file)) {
throw new Exception('Error deleting file "' . $path . $file . '".');
}
}
}
}
$dir->close();
if(!@rmdir($path)) {
throw new Exception('Error deleting directory "' . $path . '".');
}
}
}

100
tst/serversalt.php Normal file
View file

@ -0,0 +1,100 @@
<?php
class serversaltTest extends PHPUnit_Framework_TestCase
{
private $_path;
private $_invalidPath;
private $_otherPath;
private $_invalidFile;
public function setUp()
{
/* Setup Routine */
$this->_path = PATH . 'data';
if(!is_dir($this->_path)) mkdir($this->_path);
serversalt::setPath($this->_path);
$this->_otherPath = $this->_path . DIRECTORY_SEPARATOR . 'foo';
$this->_invalidPath = $this->_path . DIRECTORY_SEPARATOR . 'bar';
if(!is_dir($this->_invalidPath)) mkdir($this->_invalidPath);
$this->_invalidFile = $this->_invalidPath . DIRECTORY_SEPARATOR . 'salt.php';
}
public function tearDown()
{
/* Tear Down Routine */
chmod($this->_invalidPath, 0700);
helper::rmdir($this->_path);
}
public function testGeneration()
{
// generating new salt
serversalt::setPath($this->_path);
$salt = serversalt::get();
require 'mcrypt_mock.php';
$this->assertNotEquals($salt, serversalt::generate());
// try setting a different path and resetting it
serversalt::setPath($this->_otherPath);
$this->assertNotEquals($salt, serversalt::get());
serversalt::setPath($this->_path);
$this->assertEquals($salt, serversalt::get());
}
/**
* @expectedException Exception
* @expectedExceptionCode 11
*/
public function testPathShenanigans()
{
// try setting an invalid path
chmod($this->_invalidPath, 0000);
serversalt::setPath($this->_invalidPath);
serversalt::get();
}
/**
* @expectedException Exception
* @expectedExceptionCode 20
*/
public function testFileRead()
{
// try setting an invalid file
chmod($this->_invalidPath, 0700);
file_put_contents($this->_invalidFile, '');
chmod($this->_invalidFile, 0000);
serversalt::setPath($this->_invalidPath);
serversalt::get();
}
/**
* @expectedException Exception
* @expectedExceptionCode 13
*/
public function testFileWrite()
{
// try setting an invalid file
chmod($this->_invalidPath, 0700);
@unlink($this->_invalidFile);
file_put_contents($this->_invalidPath . DIRECTORY_SEPARATOR . '.htaccess', '');
chmod($this->_invalidPath, 0500);
serversalt::setPath($this->_invalidPath);
serversalt::get();
}
/**
* @expectedException Exception
* @expectedExceptionCode 10
*/
public function testPermissionShenanigans()
{
// try creating an invalid path
chmod($this->_invalidPath, 0000);
serversalt::setPath($this->_invalidPath . DIRECTORY_SEPARATOR . 'baz');
serversalt::get();
}
}

23
tst/vizhash16x16.php
View file

@ -10,22 +10,20 @@ class vizhash16x16Test extends PHPUnit_Framework_TestCase
public function setUp()
{
/* Setup Routine */
$this->_path = PATH . 'data' . DIRECTORY_SEPARATOR;
$this->_dataDirCreated = !is_dir($this->_path);
if($this->_dataDirCreated) mkdir($this->_path);
$this->_file = $this->_path . 'vizhash.png';
$this->_path = PATH . 'data';
if(!is_dir($this->_path)) mkdir($this->_path);
$this->_file = $this->_path . DIRECTORY_SEPARATOR . 'vizhash.png';
serversalt::setPath($this->_path);
}
public function tearDown()
{
/* Tear Down Routine */
if($this->_dataDirCreated) {
helper::rmdir($this->_path);
} else {
if(!@unlink($this->_file)) {
throw new Exception('Error deleting file "' . $this->_file . '".');
}
chmod($this->_path, 0700);
if(!@unlink($this->_file)) {
throw new Exception('Error deleting file "' . $this->_file . '".');
}
helper::rmdir($this->_path);
}
public function testVizhashGeneratesUniquePngsPerIp()
@ -37,10 +35,5 @@ class vizhash16x16Test extends PHPUnit_Framework_TestCase
$this->assertEquals('image/png', $finfo->file($this->_file));
$this->assertNotEquals($pngdata, $vz->generate('2001:1620:2057:dead:beef::cafe:babe'));
$this->assertEquals($pngdata, $vz->generate('127.0.0.1'));
// generating new salt
$salt = serversalt::get();
require 'mcrypt_mock.php';
$this->assertNotEquals($salt, serversalt::generate());
}
}

77
tst/zerobin/db.php
View file

@ -65,4 +65,81 @@ class zerobin_dbTest extends PHPUnit_Framework_TestCase
$this->assertFalse($this->_model->existsComment(self::$pasteid, self::$pasteid, self::$commentid), 'comment was deleted with paste');
$this->assertFalse($this->_model->read(self::$pasteid), 'paste can no longer be found');
}
/**
* @expectedException PDOException
*/
public function testGetIbmInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'ibm:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException PDOException
*/
public function testGetInformixInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'informix:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException PDOException
*/
public function testGetMssqlInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'mssql:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException PDOException
*/
public function testGetMysqlInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'mysql:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException PDOException
*/
public function testGetOciInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'oci:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException PDOException
*/
public function testGetPgsqlInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'pgsql:', 'usr' => null, 'pwd' => null,
'opt' => array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)
));
}
/**
* @expectedException Exception
* @expectedExceptionCode 5
*/
public function testGetFooInstance()
{
zerobin_db::getInstance(array(
'dsn' => 'foo:', 'usr' => null, 'pwd' => null, 'opt' => null
));
}
}