1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2021 22 23 24 2526 27 28 29 3031 32 33 34 3536 37 38 39 4041 42 43 44 4546 47 48 49 5051 52 53 54 5556 57 58 59 6061 62 63 64 6566 67 68 69 7071 72 73 74 7576 77 78 79 8081 82 83 84 8586 87 88 89 9091 92 93 94 9596 97 98 99 100101 102 103 104 105106 107 108 109 110111 112 113 114 115116 117 118 119 120121 122 123 124 125126 127 128 129 130131 132 133 134 135136 137 138 139 140141 142 143 144 145146 147 148 149 150151 152 153 154 155156 157 158 159 160161 162 163 164 165166 167 168 169 170171 172 173 174 175176 177 178 179 180181 182 183 184 185186 187 188 189 190191 192 193 194 195196 197 198 199 200201 202 203 204 205206 207 208 209 210211 212 213 214 215216 217 218 219 220221 222 223 224 225226 | <?php chdir('../../../'); define('GWF_PAGE_TITLE', 'Smile'); require_once('challenge/html_head.php'); if (false === ($chall = WC_Challenge::getByTitle(GWF_PAGE_TITLE))){ $chall = WC_Challenge::dummyChallenge(GWF_PAGE_TITLE, 4, 'challenge/livinskull/smile/index.php', false); } $chall->showHeader(); # Table and Helper :) require_once 'challenge/livinskull/smile/LIVIN_Smile.php'; # Your solution is here :) define('LIVINSKULL_SMILEY_SOLUTION', LIVIN_Smile::getSolution()); /** * The smiley form :) * @author gizmore */ class LivinForm { private $chall; public function __construct(WC_Challenge $chall) { $this->chall = $chall; } # Sanitize pattern a bit public function validate_pattern($m, $arg) { if ($arg === '') { return $this->chall->lang('err_pattern'); } if ($arg[0] !== '/') { $_POST['pattern'] = "/{$arg}/"; } return false; } # Always valid public function validate_filename($m, $arg) { return false; } public function getForm(WC_Challenge $chall) { $data = array( 'pattern' => array(GWF_Form::STRING, '', $chall->lang('th_pattern'), $chall->lang('tt_pattern')), 'filename' => array(GWF_Form::STRING, $this->getRandomFilename(), $chall->lang('th_filename'), $chall->lang('tt_filename')), 'image' => array(GWF_Form::FILE_OPT, '', $chall->lang('th_upload')), 'upload' => array(GWF_Form::SUBMIT, $chall->lang('btn_upload')), 'add' => array(GWF_Form::SUBMIT, $chall->lang('btn_add')), ); return new GWF_Form($this, $data); } public function getRandomFilename() { $directory = 'challenge/livinskull/smile/smiles'; if (false === ($dir = scandir($directory))) { echo GWF_HTML::err('ERR_READ_FILE', array($directory)); return ''; } foreach ($dir as $i => $file) { if ( ($file === '.') || ($file === '..') ) { unset($dir[$i]); } } if (count($dir) === 0) { return ''; } $file = $dir[array_rand($dir)]; return "<img src=\"/$directory/$file\" />"; } public function onUpload(WC_Challenge $chall) { $module = Module_WeChall::instance(); $form = $this->getForm($chall); if (false === ($file = $form->getVar('image'))) { return GWF_HTML::error('Smile', array($chall->lang('err_no_image'))); } if (!GWF_Upload::isImageFile($file)) { return GWF_HTML::error('Smile', array($chall->lang('err_no_image'))); } if (false === GWF_Upload::resizeImage($file, 64, 64, 16, 16)) { return GWF_HTML::error('Smile', array($chall->lang('err_no_image'))); } $whitelist = array( '.jpg', '.jpeg', '.gif', '.png', ); $filename = $file['name']; $allowed = false; foreach ($whitelist as $allow) { if (Common::endsWith($filename, $allow)) { $allowed = true; break; } } if (strpos($filename, '.php') !== false) { $allowed = false; } if (!preg_match('/^[\x00-\x7f]+$/D', $filename)) { return GWF_HTML::error('Smile Path', array($chall->lang('err_ascii'))); } if (!$allowed) { return GWF_HTML::error('Smile', array($chall->lang('err_no_image'))); } $fullpath = "challenge/livinskull/smile/smiles/{$filename}"; $efp = htmlspecialchars($fullpath); if (false === ($file = GWF_Upload::moveTo($file, $fullpath))) { return GWF_HTML::err('ERR_WRITE_FILE', array($efp)); } $efp = htmlspecialchars($fullpath); $rule = htmlspecialchars("<img src=\"/{$efp}\" />"); return GWF_HTML::message('Smile', $chall->lang('msg_uploaded', array($rule))); } public function onAdd(WC_Challenge $chall) { $module = Module_WeChall::instance(); $form = $this->getForm($chall); if (false !== ($error = $form->validate($module))) { return $error; } $pattern = $form->getVar('pattern'); $path = $form->getVar('filename'); // if (!preg_match('/^[\x00-\x7f]+$/D', $pattern)) // { // return GWF_HTML::error('Smile Pattern', array($chall->lang('err_ascii')));// } if (!preg_match('/^[\x00-\x7f]+$/D', $path)) { return GWF_HTML::error('Smile Path', array($chall->lang('err_ascii'))); } # Show a sample output for the new smiley :) if (!LIVIN_Smile::testSmiley($chall, $pattern, $path)) { return GWF_HTML::error('Smile', array($chall->lang('err_test'))); } # If it looks valid we even add it globally :) if (!LIVIN_Smile::looksHarmless($path)) { return GWF_HTML::error('Smile', array($chall->lang('err_xss'))); } if (!LIVIN_Smile::imageExists($path)) { return GWF_HTML::error('Smile', array($chall->lang('err_path'))); } # Like this :) LIVIN_Smile::onAddSmiley($pattern, $path); return GWF_HTML::message('Smile', $chall->lang('msg_rule_added')); } } ##################### ACTION! :) ### ################## # Weaken security a bit. GWF_Debug::setDieOnError(false); $form = new LivinForm($chall); if (isset($_POST['add'])) { # This will stop you from exploiting too much! :p require_once 'challenge/livinskull/smile/secure.php'; echo $form->onAdd($chall); } elseif (isset($_POST['upload'])){ # This will stop you from exploiting too much! :o require_once 'challenge/livinskull/smile/secure.php'; echo $form->onUpload($chall); } # Show the form :) echo $form->getForm($chall)->templateY($chall->lang('ft_add')); # Show all smileys =)echo LIVIN_Smile::showAllSmiles($chall); echo $chall->copyrightFooter(); require_once('challenge/html_foot.php'); |