Core/tests/core_securityTest.php

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<?php
/**
* FuzeWorks.
*
* The FuzeWorks MVC PHP FrameWork
*
* Copyright (C) 2015 TechFuze
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @author TechFuze
* @copyright Copyright (c) 2013 - 2016, Techfuze. (http://techfuze.net)
* @copyright Copyright (c) 1996 - 2015, Free Software Foundation, Inc. (http://www.fsf.org/)
* @license http://opensource.org/licenses/GPL-3.0 GPLv3 License
*
* @link http://fuzeworks.techfuze.net
* @since Version 0.0.1
*
* @version Version 0.0.1
*/
use FuzeWorks\Factory;
/**
* Class SecurityTest.
*
* Core testing suite, will test security class functionality
*/
class securityTest extends CoreTestAbstract
{
public function setUp()
{
// Set cookie for security test
$_COOKIE['fw_csrf_cookie'] = md5(uniqid(mt_rand(), TRUE));
// Set config for Security class
$config = Factory::getInstance()->config->getConfig('security');
$config->csrf_protection = true;
$config->csrf_token_name = 'fw_csrf_token';
$config->csrf_cookie_name = 'fw_csrf_cookie';
$this->security = new Mock_Core_Security();
}
// --------------------------------------------------------------------
public function test_csrf_verify()
{
$_SERVER['REQUEST_METHOD'] = 'GET';
$this->assertInstanceOf('FuzeWorks\Security', $this->security->csrf_verify());
}
// --------------------------------------------------------------------
/**
* @expectedException FuzeWorks\SecurityException
*/
public function test_csrf_verify_invalid()
{
// Without issuing $_POST[csrf_token_name], this request will triggering CSRF error
$_SERVER['REQUEST_METHOD'] = 'POST';
$this->security->csrf_verify();
}
// --------------------------------------------------------------------
public function test_csrf_verify_valid()
{
$_SERVER['REQUEST_METHOD'] = 'POST';
$_POST[$this->security->csrf_token_name] = $this->security->csrf_hash;
$this->assertInstanceOf('FuzeWorks\Security', $this->security->csrf_verify());
}
// --------------------------------------------------------------------
public function test_get_csrf_hash()
{
$this->assertEquals($this->security->csrf_hash, $this->security->get_csrf_hash());
}
// --------------------------------------------------------------------
public function test_get_csrf_token_name()
{
$this->assertEquals('fw_csrf_token', $this->security->get_csrf_token_name());
}
// --------------------------------------------------------------------
public function test_xss_clean()
{
$harm_string = "Hello, i try to <script>alert('Hack');</script> your site";
$harmless_string = $this->security->xss_clean($harm_string);
$this->assertEquals("Hello, i try to [removed]alert&#40;'Hack'&#41;;[removed] your site", $harmless_string);
}
// --------------------------------------------------------------------
public function test_xss_clean_string_array()
{
$harm_strings = array(
"Hello, i try to <script>alert('Hack');</script> your site",
"Simple clean string",
"Hello, i try to <script>alert('Hack');</script> your site"
);
$harmless_strings = $this->security->xss_clean($harm_strings);
$this->assertEquals("Hello, i try to [removed]alert&#40;'Hack'&#41;;[removed] your site", $harmless_strings[0]);
$this->assertEquals("Simple clean string", $harmless_strings[1]);
$this->assertEquals("Hello, i try to [removed]alert&#40;'Hack'&#41;;[removed] your site", $harmless_strings[2]);
}
// --------------------------------------------------------------------
public function test_xss_clean_image_valid()
{
$harm_string = '<img src="test.png">';
$xss_clean_return = $this->security->xss_clean($harm_string, TRUE);
// $this->assertTrue($xss_clean_return);
}
// --------------------------------------------------------------------
public function test_xss_clean_image_invalid()
{
$harm_string = '<img src=javascript:alert(String.fromCharCode(88,83,83))>';
$xss_clean_return = $this->security->xss_clean($harm_string, TRUE);
$this->assertFalse($xss_clean_return);
}
// --------------------------------------------------------------------
public function test_xss_clean_entity_double_encoded()
{
$input = '<a href="&#38&#35&#49&#48&#54&#38&#35&#57&#55&#38&#35&#49&#49&#56&#38&#35&#57&#55&#38&#35&#49&#49&#53&#38&#35&#57&#57&#38&#35&#49&#49&#52&#38&#35&#49&#48&#53&#38&#35&#49&#49&#50&#38&#35&#49&#49&#54&#38&#35&#53&#56&#38&#35&#57&#57&#38&#35&#49&#49&#49&#38&#35&#49&#49&#48&#38&#35&#49&#48&#50&#38&#35&#49&#48&#53&#38&#35&#49&#49&#52&#38&#35&#49&#48&#57&#38&#35&#52&#48&#38&#35&#52&#57&#38&#35&#52&#49">Clickhere</a>';
$this->assertEquals('<a>Clickhere</a>', $this->security->xss_clean($input));
}
// --------------------------------------------------------------------
public function text_xss_clean_js_link_removal()
{
// This one is to prevent a false positive
$this->assertEquals(
"<a href=\"javascrip\n<t\n:alert\n&#40;1&#41;\"\n>",
$this->security->xss_clean("<a href=\"javascrip\n<t\n:alert\n(1)\"\n>")
);
}
// --------------------------------------------------------------------
public function test_xss_clean_js_img_removal()
{
$input = '<img src="&#38&#35&#49&#48&#54&#38&#35&#57&#55&#38&#35&#49&#49&#56&#38&#35&#57&#55&#38&#35&#49&#49&#53&#38&#35&#57&#57&#38&#35&#49&#49&#52&#38&#35&#49&#48&#53&#38&#35&#49&#49&#50&#38&#35&#49&#49&#54&#38&#35&#53&#56&#38&#35&#57&#57&#38&#35&#49&#49&#49&#38&#35&#49&#49&#48&#38&#35&#49&#48&#50&#38&#35&#49&#48&#53&#38&#35&#49&#49&#52&#38&#35&#49&#48&#57&#38&#35&#52&#48&#38&#35&#52&#57&#38&#35&#52&#49">Clickhere';
$this->assertEquals('<img>', $this->security->xss_clean($input));
}
// --------------------------------------------------------------------
public function test_xss_clean_sanitize_naughty_html_tags()
{
$this->assertEquals('&lt;unclosedTag', $this->security->xss_clean('<unclosedTag'));
$this->assertEquals('&lt;blink&gt;', $this->security->xss_clean('<blink>'));
$this->assertEquals('<fubar>', $this->security->xss_clean('<fubar>'));
$this->assertEquals(
'<img svg=""> src="x">',
$this->security->xss_clean('<img <svg=""> src="x">')
);
$this->assertEquals(
'<img src="b on=">on=">"x onerror="alert&#40;1&#41;">',
$this->security->xss_clean('<img src="b on="<x">on=">"x onerror="alert(1)">')
);
}
// --------------------------------------------------------------------
public function test_xss_clean_sanitize_naughty_html_attributes()
{
$this->assertEquals('<foo xss=removed>', $this->security->xss_clean('<foo onAttribute="bar">'));
$this->assertEquals('<foo xss=removed>', $this->security->xss_clean('<foo onAttributeNoQuotes=bar>'));
$this->assertEquals('<foo xss=removed>', $this->security->xss_clean('<foo onAttributeWithSpaces = bar>'));
$this->assertEquals('<foo prefixOnAttribute="bar">', $this->security->xss_clean('<foo prefixOnAttribute="bar">'));
$this->assertEquals('<foo>onOutsideOfTag=test</foo>', $this->security->xss_clean('<foo>onOutsideOfTag=test</foo>'));
$this->assertEquals('onNoTagAtAll = true', $this->security->xss_clean('onNoTagAtAll = true'));
$this->assertEquals('<foo xss=removed>', $this->security->xss_clean('<foo fscommand=case-insensitive>'));
$this->assertEquals('<foo xss=removed>', $this->security->xss_clean('<foo seekSegmentTime=whatever>'));
$this->assertEquals(
'<foo bar=">" baz=\'>\' xss=removed>',
$this->security->xss_clean('<foo bar=">" baz=\'>\' onAfterGreaterThan="quotes">')
);
$this->assertEquals(
'<foo bar=">" baz=\'>\' xss=removed>',
$this->security->xss_clean('<foo bar=">" baz=\'>\' onAfterGreaterThan=noQuotes>')
);
$this->assertEquals(
'<img src="x" on=""> on=&lt;svg&gt; onerror=alert&#40;1&#41;>',
$this->security->xss_clean('<img src="x" on=""> on=<svg> onerror=alert(1)>')
);
$this->assertEquals(
'<img src="on=\'">"&lt;svg&gt; onerror=alert&#40;1&#41; onmouseover=alert&#40;1&#41;>',
$this->security->xss_clean('<img src="on=\'">"<svg> onerror=alert(1) onmouseover=alert(1)>')
);
$this->assertEquals(
'<img src="x"> on=\'x\' onerror=``,alert&#40;1&#41;>',
$this->security->xss_clean('<img src="x"> on=\'x\' onerror=``,alert(1)>')
);
$this->assertEquals(
'<a xss=removed>',
$this->security->xss_clean('<a< onmouseover="alert(1)">')
);
$this->assertEquals(
'<img src="x"> on=\'x\' onerror=,xssm()>',
$this->security->xss_clean('<img src="x"> on=\'x\' onerror=,xssm()>')
);
$this->assertEquals(
'<image src="<>" xss=removed>',
$this->security->xss_clean('<image src="<>" onerror=\'alert(1)\'>')
);
$this->assertEquals(
'<b xss=removed>',
$this->security->xss_clean('<b "=<= onmouseover=alert(1)>')
);
$this->assertEquals(
'<b xss=removed xss=removed>1">',
$this->security->xss_clean('<b a=<=" onmouseover="alert(1),1>1">')
);
$this->assertEquals(
'<b x=" onmouseover=alert&#40;1&#41;//">',
$this->security->xss_clean('<b "="< x=" onmouseover=alert(1)//">')
);
}
// --------------------------------------------------------------------
/**
* @depends test_xss_clean_sanitize_naughty_html_tags
* @depends test_xss_clean_sanitize_naughty_html_attributes
*/
public function test_naughty_html_plus_evil_attributes()
{
$this->assertEquals(
'&lt;svg<img src="x" xss=removed>',
$this->security->xss_clean('<svg<img > src="x" onerror="location=/javascript/.source+/:alert/.source+/(1)/.source">')
);
}
// --------------------------------------------------------------------
public function test_xss_hash()
{
$this->assertEmpty($this->security->xss_hash);
// Perform hash
$this->security->xss_hash();
$this->assertTrue(preg_match('#^[0-9a-f]{32}$#iS', $this->security->xss_hash) === 1);
}
// --------------------------------------------------------------------
public function test_get_random_bytes()
{
$length = "invalid";
$this->assertFalse($this->security->get_random_bytes($length));
$length = 10;
$this->assertNotEmpty($this->security->get_random_bytes($length));
}
// --------------------------------------------------------------------
public function test_entity_decode()
{
$encoded = '&lt;div&gt;Hello &lt;b&gt;Booya&lt;/b&gt;&lt;/div&gt;';
$decoded = $this->security->entity_decode($encoded);
$this->assertEquals('<div>Hello <b>Booya</b></div>', $decoded);
// Issue #3057 (https://github.com/bcit-ci/CodeIgniter/issues/3057)
$this->assertEquals(
'&foo should not include a semicolon',
$this->security->entity_decode('&foo should not include a semicolon')
);
}
// --------------------------------------------------------------------
public function test_sanitize_filename()
{
$filename = './<!--foo-->';
$safe_filename = $this->security->sanitize_filename($filename);
$this->assertEquals('foo', $safe_filename);
}
// --------------------------------------------------------------------
public function test_strip_image_tags()
{
$imgtags = array(
'<img src="smiley.gif" alt="Smiley face" height="42" width="42">',
'<img alt="Smiley face" height="42" width="42" src="smiley.gif">',
'<img src="http://www.w3schools.com/images/w3schools_green.jpg">',
'<img src="/img/sunset.gif" height="100%" width="100%">',
'<img src="mdn-logo-sm.png" alt="MD Logo" srcset="mdn-logo-HD.png 2x, mdn-logo-small.png 15w, mdn-banner-HD.png 100w 2x" />',
'<img sqrc="/img/sunset.gif" height="100%" width="100%">',
'<img srqc="/img/sunset.gif" height="100%" width="100%">',
'<img srcq="/img/sunset.gif" height="100%" width="100%">',
'<img src=non-quoted.attribute foo="bar">'
);
$urls = array(
'smiley.gif',
'smiley.gif',
'http://www.w3schools.com/images/w3schools_green.jpg',
'/img/sunset.gif',
'mdn-logo-sm.png',
'<img sqrc="/img/sunset.gif" height="100%" width="100%">',
'<img srqc="/img/sunset.gif" height="100%" width="100%">',
'<img srcq="/img/sunset.gif" height="100%" width="100%">',
'non-quoted.attribute'
);
for ($i = 0; $i < count($imgtags); $i++)
{
$this->assertEquals($urls[$i], $this->security->strip_image_tags($imgtags[$i]));
}
}
// --------------------------------------------------------------------
public function test_csrf_set_hash()
{
// Set cookie for security test
$_COOKIE['fw_csrf_cookie'] = md5(uniqid(mt_rand(), TRUE));
// Set config for Security class
$config = Factory::getInstance()->config->getConfig('security');
$config->csrf_protection = true;
$config->csrf_token_name = 'fw_csrf_token';
// leave csrf_cookie_name as blank to test _csrf_set_hash function
$config->csrf_cookie_name = '';
$this->security = new Mock_Core_Security();
$this->assertNotEmpty($this->security->get_csrf_hash());
}
}