Share your image gallery from a server's directory without need for a database thanks to strong encryption. Users can be authenticated via authentication module, e.g. implementing LDAP.
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488 lines
19 KiB
488 lines
19 KiB
<?php |
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mb_internal_encoding("utf8"); |
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$subpath = ""; |
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$file = ""; |
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$username = ""; |
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$myurl = (isset($_SERVER['HTTPS']) ? 'https' : 'http') |
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.'://'.$_SERVER['HTTP_HOST'] |
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.explode('?', (isset($_SERVER['HTTP_X_ORIGINAL_REQUEST']) |
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? $_SERVER['HTTP_X_ORIGINAL_REQUEST'] |
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: $_SERVER['REQUEST_URI']))[0]; |
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function error_die($reason, $status='500 Internal Server Error') { |
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header("Expires: Tue, 01 Jan 2000 00:00:00 GMT"); |
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header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); |
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header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); |
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header("Cache-Control: post-check=0, pre-check=0", false); |
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header("Pragma: no-cache"); |
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header('HTTP/1.0 '.$status); |
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die('<html><body><h1>Error: '.$status.'</h1><p>'.$reason.'</p>'); |
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} |
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require('configuration.php'); |
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function alt(&$p1 = NULL, &$p2 = NULL, &$p3 = NULL) { |
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if (isset($p1)) return $p1; |
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if (isset($p2)) return $p2; |
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return $p2; |
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} |
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function computeUnsignedChecksum($bytestring) { |
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$unsigned_chksum = 0; |
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for($i=0; $i<512; $i++) |
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$unsigned_chksum += ord($bytestring[$i]); |
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for($i=0; $i<8; $i++) |
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$unsigned_chksum -= ord($bytestring[148 + $i]); |
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$unsigned_chksum += ord(" ") * 8; |
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return $unsigned_chksum; |
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} |
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function tarHeader($Name, $Size, $information=NULL) { |
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if (strlen($Name)>99) { |
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$ext = preg_replace('/.*\./', '', $Name); |
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$Name = substr($Name, 0, 98-strlen($ext)).'.'.$ext; |
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} |
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$header = str_pad($Name,100,chr(0)); |
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$header .= str_pad("777",7,"0",STR_PAD_LEFT) . chr(0); |
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$header .= str_pad(decoct($information["user_id"]),7,"0",STR_PAD_LEFT) . chr(0); |
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$header .= str_pad(decoct($information["group_id"]),7,"0",STR_PAD_LEFT) . chr(0); |
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$header .= str_pad(decoct($Size),11,"0",STR_PAD_LEFT) . chr(0); |
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$header .= str_pad(decoct(time(0)),11,"0",STR_PAD_LEFT) . chr(0); |
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$header .= str_repeat(" ",8); |
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$header .= "0"; |
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$header .= str_repeat(chr(0),100); |
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$header .= str_pad("ustar",6,chr(32)); |
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$header .= chr(32) . chr(0); |
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$header .= str_pad($information["user_name"],32,chr(0)); |
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$header .= str_pad($information["group_name"],32,chr(0)); |
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$header .= str_repeat(chr(0),8); |
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$header .= str_repeat(chr(0),8); |
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$header .= str_repeat(chr(0),155); |
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$header .= str_repeat(chr(0),12); |
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$checksum = str_pad(decoct(computeUnsignedChecksum($header)),6,"0",STR_PAD_LEFT); |
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for($i=0; $i<6; $i++) { |
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$header[(148 + $i)] = substr($checksum,$i,1); |
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} |
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$header[154] = chr(0); |
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$header[155] = chr(32); |
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return $header; |
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} |
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function checkPath($pathToCheck) { |
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global $imagepath, $subpath; |
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$fullpath = preg_replace('/\/$/', '', $imagepath.'/'.$pathToCheck); |
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if ($fullpath==realpath($fullpath) && is_dir($fullpath)) { |
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$subpath=$pathToCheck; |
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$imagepath = $fullpath; |
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} else { |
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error_die('path not allowed: '.htmlentities($pathToCheck)); |
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} |
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} |
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function checkFile($fileToCheck, $thumb = false) { |
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global $imagepath, $file, $subpath, $thumbpath, $imgfile; |
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if (!preg_match('/\//', $fileToCheck) && is_file($imagepath.'/'.$fileToCheck)) { |
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$imgfile = $fileToCheck; |
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} else { |
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error_die('file not found', '404 Not Found'); |
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} |
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if ($thumb) { // image from thumbnail path |
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$file = $thumbpath.'/'.$subpath.'/'.$fileToCheck; |
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if (!is_dir($thumbpath.'/'.$subpath)) mkdir($thumbpath.'/'.$subpath, 0777, true); |
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if (!is_file($file)) { // create thumbnail |
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$image = new Imagick(); |
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$image->readImage($imagepath.'/'.$fileToCheck); |
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$image->thumbnailImage(200, 200, true); |
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$image->writeImage($file); |
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} |
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} else { |
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$file = $imagepath.'/'.$fileToCheck; |
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} |
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} |
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function returnFile($file) { |
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$ext=strtolower(preg_replace('/.*\./', '', $file)); |
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switch ($ext) { |
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case 'jpg': case 'jpeg': $type="image/jpeg"; break; |
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case 'tif': case 'tiff': $type="image/tiff"; break; |
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case 'gif': $type="image/gif"; break; |
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case 'png': $type="image/png"; break; |
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case 'bmp': $type="image/bmp"; break; |
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} |
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if (!is_file($file)) { |
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error_die('file does not exist', '404 Not Found'); |
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} |
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if (!isset($_REQUEST['view'])) { |
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header('Content-type: '.$type); |
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header('Content-Length: '.filesize($file)); |
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header('Content-Transfer-Encoding: binary'); |
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flush(); |
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readfile($file); |
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exit; |
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} |
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} |
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function extractDir($path) { |
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$res['dirs'] = array(); |
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$res['files'] = array(); |
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if ($d=opendir($path)) { |
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while (false!==($f=readdir($d))) |
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if (!preg_match('/^\./', $f) && is_dir($path.'/'.$f)) |
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$res['dirs'][] = $f; |
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elseif (!preg_match('/^\./', $f) && is_file($path.'/'.$f)) |
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switch (strtolower(preg_replace('/.*\./', '', $f))) { |
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case "jpg": case "jpeg": case "png": |
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$res['files'][] = $f; |
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} |
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} |
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closedir($d); |
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asort($res['dirs']); |
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asort($res['dirs']); |
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return $res; |
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} |
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/*function encrypt2($text) { |
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global $_REQUEST, $server_password; |
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return bin2hex(mcrypt_encrypt(MCRYPT_BLOWFISH, $_REQUEST['password']+$server_password, bzcompress(serialize($text)), MCRYPT_MODE_ECB)); |
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} |
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function decrypt2($text) { |
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global $_REQUEST, $server_password; |
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return unserialize(bzdecompress(mcrypt_decrypt(MCRYPT_BLOWFISH, $_REQUEST['password']+$server_password, hex2bin($text), MCRYPT_MODE_ECB))); |
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}*/ |
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function encrypt($text, $password = NULL) { |
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global $_REQUEST, $server_password; |
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if (!$password) $password = $_REQUEST['password']; |
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return base64_encode(mcrypt_encrypt(MCRYPT_BLOWFISH, $password+$server_password, bzcompress(serialize($text)), MCRYPT_MODE_ECB)); |
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} |
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function decrypt($text) { |
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global $_REQUEST, $server_password; |
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$res = @unserialize(bzdecompress(mcrypt_decrypt(MCRYPT_BLOWFISH, $_REQUEST['password']+$server_password, base64_decode($text), MCRYPT_MODE_ECB))); |
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if (!$res) $res = @unserialize(bzdecompress(mcrypt_decrypt(MCRYPT_BLOWFISH, $_REQUEST['password']+$server_password, hex2bin($text), MCRYPT_MODE_ECB))); |
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return $res; |
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} |
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function makelink($link, $img, $filename, $style="") { |
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echo '<a href="'.$link.'"><img src="'.$img.'" alt="'.htmlentities($filename).'" '.$style.'/></a>'; |
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} |
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function linkorselect($link, $img, $filename) { |
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if (isset($_REQUEST['select'])) { |
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echo '<input type="checkbox" id="'.htmlentities($filename).'" name="elements[]" value="'.htmlentities($filename).'" />'; |
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echo '<label for="'.htmlentities($filename).'"><img class="thumbnail" src="'.$img.'" alt="'.htmlentities($filename).'"/></label>'; |
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} else { |
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makelink($link, $img, $filename, 'class="thumbnail"'); |
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} |
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} |
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function pageheader($arrows=NULL, $class="") { |
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global $username, $subpath; |
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?> |
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<div id="header" <?php echo $class ?>> |
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<h1>Gallery: <?php echo htmlentities($username).($subpath?'@'.htmlentities($subpath):'') ?></h1> |
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<?php |
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if ($arrows) { |
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?> |
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<span id="arrows"><?php echo $arrows ?></span> |
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<?php |
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} |
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?> |
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</div> |
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<?php |
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} |
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function gallery() { |
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global $subpath, $imagepath, $max_validity_days; |
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$arrows = ''; |
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if (preg_match('/\//', $subpath)) { |
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$arrows = '<a href="?path='.urlencode(preg_replace('/\/[^\/]+$/', '', $subpath)).'" title="up">↑</a>'; |
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} elseif ($subpath!="") { |
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$arrows = '<a href="?" title="up">↑</a>'; |
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} |
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pageheader($arrows); |
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if (isset($_REQUEST['select'])) { |
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echo '<a href="?path='.urlencode($subpath).'">Normal-Modus</a>'; |
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echo '<form method="POST">'; |
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echo '<input type="hidden" name="path" value="'.htmlentities($subpath).'">'; |
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echo '<label for="password">Passwort:</label>'; |
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echo '<input type="text" size="5" name="password" value="'.substr(str_shuffle(strtolower(sha1(rand().time()."SeAG6"))),0,4).'">'; |
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echo '<label for="valid-until">Gültig bis:</label>'; |
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echo '<input type="date" size="10" name="valid-until" max="'.date('Y-m-d', time()+((int)$max_validity_days)*86400).'" value="'.date('Y-m-d', time()+14*86400).'"/>'; |
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echo '<input type="submit" name="share" value="Teilen"/>'; |
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} else { |
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echo '<a href="?path='.urlencode($subpath).'&select">Auswahl-Modus</a>'; |
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} |
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echo '<div class="dirs">'; |
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$objects = extractDir($imagepath); |
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foreach ($objects['dirs'] as $f) |
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makelink('?path='.urlencode($subpath.($subpath!=""?'/':'').$f), '?path='.urlencode($subpath).'&folder='.urlencode($f), $f, 'class="folder"'); |
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echo '</div><div class="images">'; |
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foreach ($objects['files'] as $f) |
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linkorselect('?path='.urlencode($subpath).'&file='.urlencode($f).'&view', '?path='.urlencode($subpath).'&file='.urlencode($f).'&thumb', $f); |
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echo '</div>'; |
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if (isset($_REQUEST['select'])) echo '</form>'; |
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} |
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function singleimage() { |
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global $subpath, $imagepath, $imgfile, $preview_num; |
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$objects = extractDir($imagepath); |
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$pos = array_search($imgfile, $objects['files']); |
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$arrows=''; |
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if ($pos>0) { |
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$arrows .= '<a href="?path='.urlencode($subpath).'&file='.urlencode($objects['files'][$pos-1]).'&view" title="previous">←</a>'; |
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} |
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$arrows .= '<a href="?path='.urlencode($subpath).'" title="back">↑</a>'; |
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if ($pos<count($objects['files'])-1) { |
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$arrows .= '<a href="?path='.urlencode($subpath).'&file='.urlencode($objects['files'][$pos+1]).'&view" title="next">→</a>'; |
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} |
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pageheader($arrows, 'class="single"'); |
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echo '<div class="image"><img class="image" src="?path='.urlencode($subpath).'&file='.urlencode($imgfile).'" alt="'.urlencode($imgfile).'"/></div>'; |
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echo '<div id="pos">'.($pos+1).'</div>'; |
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if ($pos!==NULL) { |
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echo '<div class="more">'; |
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$lower = max(0, $pos-floor(((int)$preview_num)/2)); |
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$higher = min(count($objects['files']), $lower+((int)$preview_num)); |
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for ($i=$lower; $i<$higher; ++$i) |
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makelink('?path='.urlencode($subpath).'&file='.urlencode($objects['files'][$i]).'&view', '?path='.urlencode($subpath).'&file='.urlencode($objects['files'][$i]).'&thumb', $objects['files'][$i], 'style="width: '.round(100/($higher-$lower), 3).'%" class="thumbnail"'); |
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echo '</div>'; |
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} |
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?> |
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<script> |
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var pos = <?php echo $pos; ?>; |
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var subpath = '<?php echo $subpath ?>'; |
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var images = <?php echo json_encode($objects['files']) ?>; |
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function next() { |
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if (++pos>=images.length) { |
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pos=0; |
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} |
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loadimg(); |
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} |
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function previous() { |
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if (pos==0) { |
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pos = images.length; |
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} |
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pos--; |
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loadimg(); |
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} |
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function back() { |
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$('#pos').text(subpath); |
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$('#pos').fadeIn(1000, function() {$('#pos').fadeOut(1000)}); |
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window.location.href = '?path='+encodeURIComponent(subpath); |
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} |
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function loadimg() { |
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var url = '?path='+encodeURIComponent(subpath)+'&file='+encodeURIComponent(images[pos]); |
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$('#pos').text(pos+1); |
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$('#pos').fadeIn(1000, function() {$('#pos').fadeOut(1000)}); |
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$('img.image').attr('src', url); |
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console.log('loaded image', url); |
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} |
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$(document).ready(function() { |
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$('div.image').click(function(e) { |
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console.log('next') |
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next() |
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}) |
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$('div.image').on('swipeleft', function(e) { |
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console.log('next') |
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next() |
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}) |
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$('div.image').on('swiperight', function(e) { |
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console.log('previous') |
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previous() |
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}) |
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$('div.image').on('swipedown', function(e) { |
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console.log('back') |
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back() |
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}) |
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}) |
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</script> |
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<?php |
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} |
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function share() { |
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global $subpath, $myurl, $email, $fullname, $default_mail_text, $default_mail_subject; |
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pageheader('<a href="?path='.urlencode($subpath).'">←</a>'); |
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$key = $_REQUEST; |
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unset($key['password']); |
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unset($key['share']); |
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unset($key['select']); |
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$secret=urlencode(encrypt($key)); |
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$default_mailto = ""; |
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if (isset($_REQUEST['mailto'])) { |
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if (preg_match('/PASSWORD/', $_REQUEST['mailtext'])) |
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$message = preg_replace('/PASSWORD/', $_REQUEST['password'], $_REQUEST['mailtext']); |
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else |
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$message = $_REQUEST['mailtext']."\n\npassword: ".$_REQUEST['password']; |
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$link = $myurl.'?secret='.$secret; |
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if (preg_match('/LINK/', $message)) |
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$message = preg_replace('/LINK/', $link, $message); |
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else |
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$message .= "\n\n".$link; |
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if (mail($_REQUEST['mailto'], $_REQUEST['subject'], $message, 'From: '.$_REQUEST['replyto']."\r\n".'Reply-To: '.$_REQUEST['replyto'])) { |
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echo '<h2>Mail Successfully Sent</h2>'; |
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echo '<p>Mail sent to '.$_REQUEST['mailto'].'.</p>'; |
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echo '<p>You can send more mails, if you want ...</p>'; |
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} else { |
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echo '<h2>Send Mail <strong>Failed</strong></h2>'; |
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echo '<p>Try again ...</p>'; |
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} |
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} |
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echo '<h2>Share Files</h2>'; |
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echo '<p>Share files: Tell your friend the password on a separate channel and send this: <a href="?secret='.$secret.'">Link to Share</a></p>'; |
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?> |
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<img src="<?php echo $myurl.'?qrcode='.$secret; ?>" /> |
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<p>or Send Link in E-Mail:</p> |
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<form method="POST"> |
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<table style="width: 100%"><tr> |
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<td><label for="replyto">From:</label></td><td><input name="replyto" type="text" value="<?php echo alt($_REQUEST['replyto'], $email[0], $fallback_mail_replyto); ?>" list="emails" style="width: 99%"/><datalist id="emails"><?php for ($i=0; $i<$email['count']; ++$i) echo '<option value="'.$email[$i].'">'; ?></datalist></td> |
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</tr><tr> |
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<td><label for="mailto">To:</label></td><td><input name="mailto" type="text" value="<?php echo alt($_REQUEST['mailto'], $default_mailto); ?>" style="width: 99%"/></td> |
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</tr><tr> |
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<td><label for="subject">Subject:</label></td><td><input name="subject" type="text" value="<?php echo alt($_REQUEST['subject'], $default_mail_subject) ?>" style="width: 99%"/></td> |
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</tr><tr> |
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<td colspan="2"><textarea name="mailtext" style="width: 99%; height: 15em"><?php echo preg_replace('/USERNAME/', $fullname, alt($_REQUEST['mailtext'], $default_mail_text)) ?></textarea></td> |
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</tr><tr> |
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<td colspan="2"><input type="submit" value="send email"/></td> |
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</tr></table> |
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<?php |
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foreach ($_POST as $k => $v) |
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switch ($k) { |
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case 'replyto': case 'mailto': case 'subject': case 'mailtext': break; |
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default: |
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if (is_array($v)) foreach ($v as $e) echo '<input type="hidden" name="'.$k.'[]" value="'.$e.'"/>'; |
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else echo '<input type="hidden" name="'.$k.'" value="'.$v.'"/>'; |
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} |
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?> |
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</form> |
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<?php |
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if (isset($key['elements'])) foreach ($key['elements'] as $f) |
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makelink('?path='.urlencode($subpath).'&file='.urlencode($f).'&view', |
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'?path='.urlencode($subpath).'&file='.urlencode($f).'&thumb', |
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$f, 'class="thumbnail"'); |
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} |
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|
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function getpassword() { |
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?> |
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<h1>Password Required</h2> |
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<p>Enter password to start download of images as a Tape-ARchive (tar) file.</p> |
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<form method="POST"> |
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<input type="hidden" name="secret" value="<?php echo htmlentities($_REQUEST['secret']) ?>"/> |
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<input type="password" name="password"/> |
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<input type="submit" value="show"/> |
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</form> |
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<?php |
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} |
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|
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function sharedfiles() { |
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global $subpath; |
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$secret = decrypt($_REQUEST['secret']) or error_die('bad password', '403 Forbidden'); ?> |
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<h1>Shared Files</h1> |
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<p>Download shared files as a <a href="http://de.wikipedia.org/wiki/Tar">Tape-ARchive</a> (tar) file.</p> |
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<p><form method="POST"> |
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<input type="hidden" name="secret" value="<?php echo htmlentities($_REQUEST['secret']) ?>"/> |
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<input type="hidden" name="password" value="<?php echo htmlentities($_REQUEST['password']) ?>"/> |
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<input type="hidden" name="download"/> |
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<input type="submit" value="download"/> |
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</form></p> |
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<?php |
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foreach ($secret['elements'] as $f) { |
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$secret['path'] = $subpath; |
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$secret['file'] = $f; |
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$secret['valid-until'] = date('c', time()+30); |
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$password=str_shuffle(sha1(rand().time()."Js83aéa")); |
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echo '<img src="?secret='.urlencode(encrypt($secret, $password)).'&password='.urlencode($password).'" alt="'.htmlentities($f).'"/>'; |
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} |
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} |
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|
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if (!isset($_REQUEST['secret'])) { |
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if ($username=="") error_die('not authorized', '403 Forbidden'); |
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if (isset($_REQUEST['qrcode'])) { |
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QRcode::png($myurl.'?secret='.$_REQUEST['qrcode']); |
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exit; |
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} else { |
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if (isset($_REQUEST['path'])) checkPath($_REQUEST['path']); |
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if (isset($_REQUEST['folder']) && !preg_match('/\//', $_REQUEST['folder'])) { |
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$file = $thumbpath.'/folders/'.$subpath.'/'.$_REQUEST['folder'].'.png'; |
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$type="image/png"; |
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if (!is_dir($thumbpath.'/folders/'.$subpath)) mkdir($thumbpath.'/folders/'.$subpath, 0777, true); |
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if (!is_file($file)) { // create folder image |
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$txt = wordwrap(preg_replace('/ +/', ' ', preg_replace('/-/', ' - ', preg_replace('/_/', " ", $_REQUEST['folder']))), 16, "\n", true); |
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$image = new Imagick(); |
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$image->readImage('folder.png'); // read local template file |
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$draw = new ImagickDraw(); |
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$draw->setFillColor('black'); |
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$draw->setFont($font); |
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if (mb_strlen($txt)<2) { |
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$draw->setFontSize(60); |
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$x = 75; |
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} else { |
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$draw->setFontSize(15); |
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$x = 50; |
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} |
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$image->annotateImage($draw, 10, $x, 0, $txt); |
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$image->writeImage($file); |
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} |
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} elseif (isset($_REQUEST['file'])) checkFile($_REQUEST['file'], isset($_REQUEST['thumb'])); |
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if ($file!="") returnFile($file); |
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} |
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} else { |
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if (isset($_REQUEST['password'])) { |
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$secret = decrypt($_REQUEST['secret']) or error_die('bad password', '403 Forbidden'); |
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if (!isset($secret['valid-until'])) error_die('missing validation date'); |
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if (!isset($max_validity_days)) error_die('maximum validity days not set'); |
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if (strtotime($secret['valid-until'])>time()+((int)$max_validity_days)*86400) error_die('validity limitation not respected'); |
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if (strtotime($secret['valid-until'])<time()) error_die('sharing request timed out', '410 Gone'); |
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checkPath($secret['path']); |
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if (isset($secret['file'])) { |
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checkFile($secret['file'], true); |
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if ($file!="") returnFile($file); |
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} |
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foreach ($secret['elements'] as $f) checkFile($f); |
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if (isset($_REQUEST['download'])) { |
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$secret = decrypt($_REQUEST['secret']) or error_die('bad password', '403 Forbidden'); |
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if (!isset($secret['valid-until'])) error_die('missing validation date'); |
|
if (strtotime($secret['valid-until'])<time()) error_die('sharing request timed out', '410 Gone'); |
|
if (isset($secret['elements'])) { |
|
$size = 0; |
|
foreach ($secret['elements'] as $f) { |
|
checkFile($f); |
|
$size += 512 + ceil(filesize($file)/512)*512; |
|
$files[] = $file; |
|
} |
|
header('Content-Description: File Transfer'); |
|
header('Content-Type: application/x-tar'); |
|
header('Content-Length: '.$size); |
|
header('Content-Disposition: attachment; filename=shared-images.tar'); |
|
foreach($files as $f) { |
|
print tarHeader('shared-images/'.basename($f), filesize($f)); |
|
readfile($f); |
|
print str_repeat(chr(0), ceil(filesize($f)/512)*512-filesize($f)); |
|
} |
|
exit; |
|
} |
|
} |
|
} |
|
} |
|
|
|
?><!DOCTYPE html> |
|
<html> |
|
<header> |
|
<meta charset="utf-8"> |
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
|
<link rel="stylesheet" href="style.css"> |
|
<link rel="stylesheet" href="node_modules/jquery-mobile/dist/jquery.mobile.min.css"> |
|
<script src="node_modules/jquery/dist/jquery.min.js"></script> |
|
<script src="node_modules/jquery-migrate/dist/jquery-migrate.min.js"></script> |
|
<script src="node_modules/jquery-mobile/dist/jquery.mobile.min.js"></script> |
|
<script src="gallery.js"></script> |
|
</header> |
|
<body> |
|
<?php |
|
if ($username=="") { |
|
if (isset($_REQUEST['password'])) { |
|
sharedfiles(); |
|
} else { |
|
getpassword(); |
|
} |
|
} else { |
|
?> |
|
<?php |
|
if (isset($_REQUEST['share'])) { |
|
share(); |
|
} else { |
|
if (isset($_REQUEST['view'])) { // view single image |
|
singleimage(); |
|
} else { // gallery view |
|
gallery(); |
|
} |
|
} |
|
} |
|
?> |
|
</body> |
|
</html>
|
|
|