phpthumb/phpThumb.php
<?php
//////////////////////////////////////////////////////////////
// phpThumb() by James Heinrich <info@silisoftware.com> //
// available at http://phpthumb.sourceforge.net //
// and/or https://github.com/JamesHeinrich/phpThumb //
//////////////////////////////////////////////////////////////
/// //
// See: phpthumb.changelog.txt for recent changes //
// See: phpthumb.readme.txt for usage instructions //
// ///
//////////////////////////////////////////////////////////////
error_reporting(E_ALL);
ini_set('display_errors', '1');
// check for magic quotes in PHP < 7.4.0 (when these functions became deprecated)
if (version_compare(PHP_VERSION, '7.4.0', '<')) {
ini_set('magic_quotes_runtime', '0');
if (ini_get('magic_quotes_runtime')) {
die('"magic_quotes_runtime" is set in php.ini, cannot run phpThumb with this enabled');
}
}
// Set a default timezone if web server has not done already in php.ini
if (!ini_get('date.timezone') && function_exists('date_default_timezone_set')) { // PHP >= 5.1.0
date_default_timezone_set('UTC');
}
$starttime = array_sum(explode(' ', microtime())); // could be called as microtime(true) for PHP 5.0.0+
// this script relies on the superglobal arrays, fake it here for old PHP versions
if (PHP_VERSION < '4.1.0') {
$_SERVER = $HTTP_SERVER_VARS;
$_GET = $HTTP_GET_VARS;
}
function SendSaveAsFileHeaderIfNeeded($getimagesize = false)
{
if (headers_sent()) {
return false;
}
global $phpThumb;
$downloadfilename = phpthumb_functions::SanitizeFilename(!empty($_GET['sia']) ? $_GET['sia'] : (!empty($_GET['down']) ? $_GET['down'] : 'phpThumb_generated_thumbnail.' . (!empty($_GET['f']) ? $_GET['f'] : 'jpg')));
//if (empty($_GET['sia']) && empty($_GET['down']) && !empty($phpThumb->thumbnail_image_width) && !empty($phpThumb->thumbnail_image_height)) {
if (empty($_GET['sia']) && empty($_GET['down']) && !empty($getimagesize[0]) && !empty($getimagesize[1])) {
// if we know the output image dimensions we can generate a better default filename
$downloadfilename = phpthumb_functions::SanitizeFilename((!empty($phpThumb->src) ? basename($phpThumb->src) : md5($phpThumb->rawImageData)) . '-' . intval($getimagesize[0]) . 'x' . intval($getimagesize[1]) . '.' . (!empty($_GET['f']) ? $_GET['f'] : 'jpg'));
}
if (!empty($downloadfilename)) {
$phpThumb->DebugMessage('SendSaveAsFileHeaderIfNeeded() sending header: Content-Disposition: ' . (!empty($_GET['down']) ? 'attachment' : 'inline') . '; filename="' . $downloadfilename . '"', __FILE__, __LINE__);
header('Content-Disposition: ' . (!empty($_GET['down']) ? 'attachment' : 'inline') . '; filename="' . $downloadfilename . '"');
}
return true;
}
function RedirectToCachedFile()
{
global $phpThumb;
$nice_cachefile = str_replace(DIRECTORY_SEPARATOR, '/', $phpThumb->cache_filename);
$nice_docroot = str_replace(DIRECTORY_SEPARATOR, '/', rtrim($phpThumb->config_document_root, '/\\'));
$parsed_url = phpthumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
$nModified = filemtime($phpThumb->cache_filename);
if ($phpThumb->config_nooffsitelink_enabled && !empty($_SERVER['HTTP_REFERER']) && !in_array(@$parsed_url['host'], $phpThumb->config_nooffsitelink_valid_domains)) {
$phpThumb->DebugMessage(
'Would have used cached (image/'
. $phpThumb->thumbnailFormat
. ') file "'
. $phpThumb->cache_filename
. '" (Last-Modified: '
. gmdate('D, d M Y H:i:s', $nModified)
. ' GMT), but skipping because $_SERVER[HTTP_REFERER] ('
. @$_SERVER['HTTP_REFERER']
. ') is not in $phpThumb->config_nooffsitelink_valid_domains ('
. implode(';', $phpThumb->config_nooffsitelink_valid_domains)
. ')',
__FILE__,
__LINE__
);
} elseif ($phpThumb->phpThumbDebug) {
$phpThumb->DebugTimingMessage('skipped using cached image', __FILE__, __LINE__);
$phpThumb->DebugMessage('Would have used cached file, but skipping due to phpThumbDebug', __FILE__, __LINE__);
$phpThumb->DebugMessage('* Would have sent headers (1): Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT', __FILE__, __LINE__);
if ($getimagesize = @getimagesize($phpThumb->cache_filename)) {
$phpThumb->DebugMessage('* Would have sent headers (2): Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($getimagesize[2]), __FILE__, __LINE__);
}
if (preg_match('#^' . preg_quote($nice_docroot) . '(.*)$#', $nice_cachefile, $matches)) {
$phpThumb->DebugMessage('* Would have sent headers (3): Location: ' . dirname($matches[1]) . '/' . urlencode(basename($matches[1])), __FILE__, __LINE__);
} else {
$phpThumb->DebugMessage('* Would have sent data: file_get_contents(' . $phpThumb->cache_filename . ')', __FILE__, __LINE__);
}
} else {
if (headers_sent()) {
$phpThumb->ErrorImage('Headers already sent (' . basename(__FILE__) . ' line ' . __LINE__ . ')');
exit;
}
$getimagesize = @getimagesize($phpThumb->cache_filename);
SendSaveAsFileHeaderIfNeeded($getimagesize);
header('Pragma: private');
header('Cache-Control: max-age=' . $phpThumb->getParameter('config_cache_maxage'));
header('Expires: ' . date(DATE_RFC1123, time() + $phpThumb->getParameter('config_cache_maxage')));
if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) && ($nModified == strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])) && !empty($_SERVER['SERVER_PROTOCOL'])) {
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT');
header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
exit;
}
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT');
header('ETag: "' . md5_file($phpThumb->cache_filename) . '"');
if (!empty($getimagesize[2])) {
header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($getimagesize[2]));
} elseif (preg_match('#\\.ico$#i', $phpThumb->cache_filename)) {
header('Content-Type: image/x-icon');
}
header('Content-Length: ' . filesize($phpThumb->cache_filename));
if (empty($phpThumb->config_cache_force_passthru) && preg_match('#^' . preg_quote($nice_docroot) . '(.*)$#', $nice_cachefile, $matches)) {
header('Location: ' . dirname($matches[1]) . '/' . urlencode(basename($matches[1])));
} else {
echo file_get_contents($phpThumb->cache_filename);
}
exit;
}
return true;
}
// instantiate a new phpThumb() object
ob_start();
if (!include_once __DIR__ . '/phpthumb.class.php') {
ob_end_flush();
die('failed to include_once("' . realpath(__DIR__ . '/phpthumb.class.php') . '")');
}
ob_end_clean();
$phpThumb = new phpThumb();
$phpThumb->DebugTimingMessage('phpThumb.php start', __FILE__, __LINE__, $starttime);
$phpThumb->setParameter('config_error_die_on_error', true);
if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) {
set_time_limit(60); // shouldn't take nearly this long in most cases, but with many filters and/or a slow server...
}
// phpThumbDebug[0] used to be here, but may reveal too much
// info when high_security_mode should be enabled (not set yet)
if (file_exists(__DIR__ . '/phpThumb.config.php')) {
ob_start();
if (include_once __DIR__ . '/phpThumb.config.php') {
// great
} else {
ob_end_flush();
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('failed to include_once(' . __DIR__ . '/phpThumb.config.php) - realpath="' . realpath(__DIR__ . '/phpThumb.config.php') . '"');
}
ob_end_clean();
} elseif (file_exists(__DIR__ . '/phpThumb.config.php.default')) {
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('Please rename "phpThumb.config.php.default" to "phpThumb.config.php"');
} else {
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('failed to include_once(' . __DIR__ . '/phpThumb.config.php) - realpath="' . realpath(__DIR__ . '/phpThumb.config.php') . '"');
}
if (!empty($PHPTHUMB_CONFIG)) {
foreach ($PHPTHUMB_CONFIG as $key => $value) {
$keyname = 'config_' . $key;
$phpThumb->setParameter($keyname, $value);
if (!preg_match('#(password|mysql)#i', $key)) {
$phpThumb->DebugMessage('setParameter(' . $keyname . ', ' . $phpThumb->phpThumbDebugVarDump($value) . ')', __FILE__, __LINE__);
}
}
if (!$phpThumb->config_disable_debug) {
// if debug mode is enabled, force phpThumbDebug output, do not allow normal thumbnails to be generated
$_GET['phpThumbDebug'] = (!empty($_GET['phpThumbDebug']) ? max(1, (int)$_GET['phpThumbDebug']) : 9);
$phpThumb->setParameter('phpThumbDebug', $_GET['phpThumbDebug']);
}
} else {
$phpThumb->DebugMessage('$PHPTHUMB_CONFIG is empty', __FILE__, __LINE__);
}
if (empty($phpThumb->config_disable_pathinfo_parsing) && (empty($_GET) || isset($_GET['phpThumbDebug'])) && !empty($_SERVER['PATH_INFO'])) {
$_SERVER['PHP_SELF'] = str_replace($_SERVER['PATH_INFO'], '', @$_SERVER['PHP_SELF']);
$args = explode(';', substr($_SERVER['PATH_INFO'], 1));
$phpThumb->DebugMessage('PATH_INFO.$args set to (' . implode(')(', $args) . ')', __FILE__, __LINE__);
if (!empty($args)) {
$_GET['src'] = @$args[count($args) - 1];
$phpThumb->DebugMessage('PATH_INFO."src" = "' . $_GET['src'] . '"', __FILE__, __LINE__);
if (preg_match('#^new\=([a-z0-9]+)#i', $_GET['src'], $matches)) {
unset($_GET['src']);
$_GET['new'] = $matches[1];
}
}
if (preg_match('#^([\d]*)x?([\d]*)$#i', @$args[count($args) - 2], $matches)) {
$_GET['w'] = $matches[1];
$_GET['h'] = $matches[2];
$phpThumb->DebugMessage('PATH_INFO."w"x"h" set to "' . $_GET['w'] . '"x"' . $_GET['h'] . '"', __FILE__, __LINE__);
}
for ($i = 0; $i < count($args) - 2; $i++) {
@list($key, $value) = explode('=', @$args[$i]);
if (substr($key, -2) == '[]') {
$array_key_name = substr($key, 0, -2);
$_GET[$array_key_name][] = $value;
$phpThumb->DebugMessage('PATH_INFO."' . $array_key_name . '[]" = "' . $value . '"', __FILE__, __LINE__);
} else {
$_GET[$key] = $value;
$phpThumb->DebugMessage('PATH_INFO."' . $key . '" = "' . $value . '"', __FILE__, __LINE__);
}
}
}
if (!empty($phpThumb->config_high_security_enabled)) {
if (empty($_GET['hash'])) {
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('ERROR: missing hash');
} elseif (phpthumb_functions::PasswordStrength($phpThumb->config_high_security_password) < 20) {
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('ERROR: $PHPTHUMB_CONFIG[high_security_password] is not complex enough');
} elseif ($_GET['hash'] != md5(str_replace($phpThumb->config_high_security_url_separator . 'hash=' . $_GET['hash'], '', $_SERVER['QUERY_STRING']) . $phpThumb->config_high_security_password)) {
header('HTTP/1.0 403 Forbidden');
sleep(10); // deliberate delay to discourage password-guessing
$phpThumb->ErrorImage('ERROR: invalid hash');
}
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[0]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '0')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
// check for magic quotes in PHP < 7.4.0 (when these functions became deprecated)
if (version_compare(PHP_VERSION, '7.4.0', '<')) {
// returned the fixed string if the evil "magic_quotes_gpc" setting is on
if (get_magic_quotes_gpc()) {
// deprecated: 'err', 'file', 'goto',
$RequestVarsToStripSlashes = ['src', 'wmf', 'down'];
foreach ($RequestVarsToStripSlashes as $key) {
if (isset($_GET[$key])) {
if (is_string($_GET[$key])) {
$_GET[$key] = stripslashes($_GET[$key]);
} else {
unset($_GET[$key]);
}
}
}
}
}
if (empty($_SERVER['PATH_INFO']) && empty($_SERVER['QUERY_STRING'])) {
$phpThumb->config_disable_debug = false; // otherwise error message won't print
$phpThumb->ErrorImage('ERROR: no parameters specified');
}
if (!empty($_GET['src']) && isset($_GET['md5s']) && empty($_GET['md5s'])) {
$md5s = '';
if (preg_match('#^([a-z0-9]+)://#i', $_GET['src'], $protocol_matches)) {
if (preg_match('#^(f|ht)tps?://#i', $_GET['src'])) {
if ($rawImageData = phpthumb_functions::SafeURLread($_GET['src'], $error, $phpThumb->config_http_fopen_timeout, $phpThumb->config_http_follow_redirect)) {
$md5s = md5($rawImageData);
}
} else {
$phpThumb->ErrorImage('only FTP and HTTP/HTTPS protocols are allowed, "' . $protocol_matches[1] . '" is not');
}
} else {
$SourceFilename = $phpThumb->ResolveFilenameToAbsolute($_GET['src']);
if (is_readable($SourceFilename)) {
$md5s = phpthumb_functions::md5_file_safe($SourceFilename);
} else {
$phpThumb->ErrorImage('ERROR: "' . $SourceFilename . '" cannot be read');
}
}
if (!empty($_SERVER['HTTP_REFERER'])) {
$phpThumb->ErrorImage('&md5s=' . $md5s);
} else {
die('&md5s=' . $md5s);
}
}
if (!empty($_GET['src']) && empty($phpThumb->config_allow_local_http_src) && preg_match('#^http://' . @$_SERVER['HTTP_HOST'] . '(.+)#i', $_GET['src'], $matches)) {
$phpThumb->ErrorImage('It is MUCH better to specify the "src" parameter as "' . $matches[1] . '" instead of "' . $matches[0] . '".' . "\n\n" . 'If you really must do it this way, enable "allow_local_http_src" in phpThumb.config.php');
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[1]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '1')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
$parsed_url_referer = phpthumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
if ($phpThumb->config_nooffsitelink_require_refer && !in_array(@$parsed_url_referer['host'], $phpThumb->config_nohotlink_valid_domains)) {
$phpThumb->ErrorImage('config_nooffsitelink_require_refer enabled and ' . (@$parsed_url_referer['host'] ? '"' . $parsed_url_referer['host'] . '" is not an allowed referer' : 'no HTTP_REFERER exists'));
}
$parsed_url_src = phpthumb_functions::ParseURLbetter(@$_GET['src']);
if ($phpThumb->config_nohotlink_enabled && $phpThumb->config_nohotlink_erase_image && preg_match('#^(f|ht)tps?://#i', @$_GET['src']) && !in_array(@$parsed_url_src['host'], $phpThumb->config_nohotlink_valid_domains)) {
$phpThumb->ErrorImage($phpThumb->config_nohotlink_text_message);
}
if ($phpThumb->config_mysql_query) {
if ($phpThumb->config_mysql_extension == 'mysqli') {
$found_missing_function = false;
foreach (['mysqli_connect'] as $required_mysqli_function) {
if (!function_exists($required_mysqli_function)) {
$found_missing_function = $required_mysqli_function;
break;
}
}
if ($found_missing_function) {
$phpThumb->ErrorImage('SQL function unavailable: ' . $found_missing_function);
} else {
$mysqli = new mysqli($phpThumb->config_mysql_hostname, $phpThumb->config_mysql_username, $phpThumb->config_mysql_password, $phpThumb->config_mysql_database);
if ($mysqli->connect_error) {
$phpThumb->ErrorImage('MySQLi connect error (' . $mysqli->connect_errno . ') ' . $mysqli->connect_error);
} else {
if ($result = $mysqli->query($phpThumb->config_mysql_query)) {
if ($row = $result->fetch_array()) {
$result->free();
$mysqli->close();
$phpThumb->setSourceData($row[0]);
unset($row);
} else {
$result->free();
$mysqli->close();
$phpThumb->ErrorImage('no matching data in database.');
}
} else {
$mysqli->close();
$phpThumb->ErrorImage('Error in MySQL query: "' . $mysqli->error . '"');
}
}
unset($_GET['id']);
}
} elseif ($phpThumb->config_mysql_extension == 'mysql') {
$found_missing_function = false;
//foreach (array('mysql_connect', 'mysql_select_db', 'mysql_query', 'mysql_fetch_array', 'mysql_free_result', 'mysql_close', 'mysql_error') as $required_mysql_function) {
foreach (['mysql_connect'] as $required_mysql_function) {
if (!function_exists($required_mysql_function)) {
$found_missing_function = $required_mysql_function;
break;
}
}
if ($found_missing_function) {
$phpThumb->ErrorImage('SQL function unavailable: ' . $found_missing_function);
} else {
if ($cid = @mysql_connect($phpThumb->config_mysql_hostname, $phpThumb->config_mysql_username, $phpThumb->config_mysql_password)) {
if (@mysql_select_db($phpThumb->config_mysql_database, $cid)) {
if ($result = @mysql_query($phpThumb->config_mysql_query, $cid)) {
if ($row = @mysql_fetch_array($result)) {
mysql_free_result($result);
mysql_close($cid);
$phpThumb->setSourceData($row[0]);
unset($row);
} else {
mysql_free_result($result);
mysql_close($cid);
$phpThumb->ErrorImage('no matching data in database.');
}
} else {
mysql_close($cid);
$phpThumb->ErrorImage('Error in MySQL query: "' . mysql_error($cid) . '"');
}
} else {
mysql_close($cid);
$phpThumb->ErrorImage('cannot select MySQL database: "' . mysql_error($cid) . '"');
}
} else {
$phpThumb->ErrorImage('cannot connect to MySQL server');
}
unset($_GET['id']);
}
} else {
$phpThumb->ErrorImage('config_mysql_extension not supported');
}
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[2]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '2')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
$PHPTHUMB_DEFAULTS_DISABLEGETPARAMS = (bool)($phpThumb->config_cache_default_only_suffix && (strpos($phpThumb->config_cache_default_only_suffix, '*') !== false));
// deprecated: 'err', 'file', 'goto',
$allowedGETparameters = ['src', 'new', 'w', 'h', 'wp', 'hp', 'wl', 'hl', 'ws', 'hs', 'f', 'q', 'sx', 'sy', 'sw', 'sh', 'zc', 'ica', 'bc', 'bg', 'bgt', 'fltr', 'xto', 'ra', 'ar', 'aoe', 'far', 'iar', 'maxb', 'down', 'phpThumbDebug', 'hash', 'md5s', 'sfn', 'dpi', 'sia', 'nocache'];
foreach ($_GET as $key => $value) {
if (!empty($PHPTHUMB_DEFAULTS_DISABLEGETPARAMS) && ($key != 'src')) {
// disabled, do not set parameter
$phpThumb->DebugMessage('ignoring $_GET[' . $key . '] because of $PHPTHUMB_DEFAULTS_DISABLEGETPARAMS', __FILE__, __LINE__);
} elseif (in_array($key, $allowedGETparameters)) {
$phpThumb->DebugMessage('setParameter(' . $key . ', ' . $phpThumb->phpThumbDebugVarDump($value) . ')', __FILE__, __LINE__);
$phpThumb->setParameter($key, $value);
} else {
$phpThumb->ErrorImage('Forbidden parameter: ' . $key);
}
}
if (!empty($PHPTHUMB_DEFAULTS) && is_array($PHPTHUMB_DEFAULTS)) {
$phpThumb->DebugMessage('setting $PHPTHUMB_DEFAULTS[' . implode(';', array_keys($PHPTHUMB_DEFAULTS)) . ']', __FILE__, __LINE__);
foreach ($PHPTHUMB_DEFAULTS as $key => $value) {
if (!$PHPTHUMB_DEFAULTS_GETSTRINGOVERRIDE || !isset($_GET[$key])) { // set parameter to default value if config is set to allow _GET to override default, OR if no value is passed via _GET for this parameter
//$_GET[$key] = $value;
//$phpThumb->DebugMessage('PHPTHUMB_DEFAULTS assigning ('.(is_array($value) ? print_r($value, true) : $value).') to $_GET['.$key.']', __FILE__, __LINE__);
$phpThumb->setParameter($key, $value);
$phpThumb->DebugMessage('setParameter(' . $key . ', ' . $phpThumb->phpThumbDebugVarDump($value) . ') from $PHPTHUMB_DEFAULTS', __FILE__, __LINE__);
}
}
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[3]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '3')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
//if (!@$_GET['phpThumbDebug'] && !is_file($phpThumb->sourceFilename) && !phpthumb_functions::gd_version()) {
// if (!headers_sent()) {
// // base64-encoded error image in GIF format
// $ERROR_NOGD = 'R0lGODlhIAAgALMAAAAAABQUFCQkJDY2NkZGRldXV2ZmZnJycoaGhpSUlKWlpbe3t8XFxdXV1eTk5P7+/iwAAAAAIAAgAAAE/vDJSau9WILtTAACUinDNijZtAHfCojS4W5H+qxD8xibIDE9h0OwWaRWDIljJSkUJYsN4bihMB8th3IToAKs1VtYM75cyV8sZ8vygtOE5yMKmGbO4jRdICQCjHdlZzwzNW4qZSQmKDaNjhUMBX4BBAlmMywFSRWEmAI6b5gAlhNxokGhooAIK5o/pi9vEw4Lfj4OLTAUpj6IabMtCwlSFw0DCKBoFqwAB04AjI54PyZ+yY3TD0ss2YcVmN/gvpcu4TOyFivWqYJlbAHPpOntvxNAACcmGHjZzAZqzSzcq5fNjxFmAFw9iFRunD1epU6tsIPmFCAJnWYE0FURk7wJDA0MTKpEzoWAAskiAAA7';
// header('Content-Type: image/gif');
// echo base64_decode($ERROR_NOGD);
// } else {
// echo '*** ERROR: No PHP-GD support available ***';
// }
// exit;
//}
// check to see if file can be output from source with no processing or caching
$CanPassThroughDirectly = true;
if ($phpThumb->rawImageData) {
// data from SQL, should be fine
} elseif (preg_match('#^https?\\://[^\\?&]+\\.(jpe?g|gif|png|webp)$#i', $phpThumb->src)) {
// assume is ok to passthru if no other parameters specified
} elseif (preg_match('#^(f|ht)tps?\\://#i', $phpThumb->src)) {
$phpThumb->DebugMessage('$CanPassThroughDirectly=false because preg_match("#^(f|ht)tps?://#i", ' . $phpThumb->src . ')', __FILE__, __LINE__);
$CanPassThroughDirectly = false;
} elseif (!@is_readable($phpThumb->sourceFilename)) {
$phpThumb->DebugMessage('$CanPassThroughDirectly=false because !@is_readable(' . $phpThumb->sourceFilename . ')', __FILE__, __LINE__);
$CanPassThroughDirectly = false;
} elseif (!@is_file($phpThumb->sourceFilename)) {
$phpThumb->DebugMessage('$CanPassThroughDirectly=false because !@is_file(' . $phpThumb->sourceFilename . ')', __FILE__, __LINE__);
$CanPassThroughDirectly = false;
}
foreach ($_GET as $key => $value) {
switch ($key) {
case 'src':
// allowed
break;
case 'w':
case 'h':
// might be OK if exactly matches original
if (preg_match('#^https?\\://[^\\?&]+\\.(jpe?g|gif|png|webp)$#i', $phpThumb->src)) {
// assume it is not ok for direct-passthru of remote image
$CanPassThroughDirectly = false;
}
break;
case 'phpThumbDebug':
// handled in direct-passthru code
break;
default:
// all other parameters will cause some processing,
// therefore cannot pass through original image unmodified
$CanPassThroughDirectly = false;
$UnAllowedGET[] = $key;
break;
}
}
if (!empty($UnAllowedGET)) {
$phpThumb->DebugMessage('$CanPassThroughDirectly=false because $_GET[' . implode(';', array_unique($UnAllowedGET)) . '] are set', __FILE__, __LINE__);
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[4]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '4')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
$phpThumb->DebugMessage('$CanPassThroughDirectly="' . (int)$CanPassThroughDirectly . '" && $phpThumb->src="' . $phpThumb->src . '"', __FILE__, __LINE__);
while ($CanPassThroughDirectly && $phpThumb->src) {
// no parameters set, passthru
if (preg_match('#^https?\\://[^\\?&]+\.(jpe?g|gif|png|webp)$#i', $phpThumb->src)) {
$phpThumb->DebugMessage('Passing HTTP source through directly as Location: redirect (' . $phpThumb->src . ')', __FILE__, __LINE__);
header('Location: ' . $phpThumb->src);
exit;
}
$SourceFilename = $phpThumb->ResolveFilenameToAbsolute($phpThumb->src);
// security and size checks
if ($phpThumb->getimagesizeinfo = @getimagesize($SourceFilename)) {
$phpThumb->DebugMessage('Direct passthru getimagesize() returned [w=' . $phpThumb->getimagesizeinfo[0] . ';h=' . $phpThumb->getimagesizeinfo[1] . ';t=' . $phpThumb->getimagesizeinfo[2] . ']', __FILE__, __LINE__);
if (!@$_GET['w'] && !@$_GET['wp'] && !@$_GET['wl'] && !@$_GET['ws'] && !@$_GET['h'] && !@$_GET['hp'] && !@$_GET['hl'] && !@$_GET['hs']) {
// no resizing needed
$phpThumb->DebugMessage('Passing "' . $SourceFilename . '" through directly, no resizing required ("' . $phpThumb->getimagesizeinfo[0] . '"x"' . $phpThumb->getimagesizeinfo[1] . '")', __FILE__, __LINE__);
} elseif (($phpThumb->getimagesizeinfo[0] <= @$_GET['w']) && ($phpThumb->getimagesizeinfo[1] <= @$_GET['h']) && ((@$_GET['w'] == $phpThumb->getimagesizeinfo[0]) || (@$_GET['h'] == $phpThumb->getimagesizeinfo[1]))) {
// image fits into 'w'x'h' box, and at least one dimension matches exactly, therefore no resizing needed
$phpThumb->DebugMessage('Passing "' . $SourceFilename . '" through directly, no resizing required ("' . $phpThumb->getimagesizeinfo[0] . '"x"' . $phpThumb->getimagesizeinfo[1] . '" fits inside "' . @$_GET['w'] . '"x"' . @$_GET['h'] . '")', __FILE__, __LINE__);
} else {
$phpThumb->DebugMessage('Not passing "' . $SourceFilename . '" through directly because resizing required (from "' . $phpThumb->getimagesizeinfo[0] . '"x"' . $phpThumb->getimagesizeinfo[1] . '" to "' . @$_GET['w'] . '"x"' . @$_GET['h'] . '")', __FILE__, __LINE__);
break;
}
switch ($phpThumb->getimagesizeinfo[2]) {
case 1: // GIF
case 2: // JPG
case 3: // PNG
case 18: // WEBP
// great, let it through
break;
default:
// browser probably can't handle format, remangle it to JPEG/PNG/GIF
$phpThumb->DebugMessage('Not passing "' . $SourceFilename . '" through directly because $phpThumb->getimagesizeinfo[2] = "' . $phpThumb->getimagesizeinfo[2] . '"', __FILE__, __LINE__);
break 2;
}
$ImageCreateFunctions = [1 => 'imagecreatefromgif', 2 => 'imagecreatefromjpeg', 3 => 'imagecreatefrompng', 18 => 'imagecreatefromwebp'];
$theImageCreateFunction = @$ImageCreateFunctions[$phpThumb->getimagesizeinfo[2]];
$dummyImage = false;
if ($phpThumb->config_disable_onlycreateable_passthru || (function_exists($theImageCreateFunction) && ($dummyImage = @$theImageCreateFunction($SourceFilename)))) {
// great
if (@is_resource($dummyImage) || (@is_object($dummyImage) && $dummyImage instanceof \GdImage)) {
unset($dummyImage);
}
if (headers_sent()) {
$phpThumb->ErrorImage('Headers already sent (' . basename(__FILE__) . ' line ' . __LINE__ . ')');
exit;
}
if (!empty($_GET['phpThumbDebug'])) {
$phpThumb->DebugTimingMessage('skipped direct $SourceFilename passthru', __FILE__, __LINE__);
$phpThumb->DebugMessage('Would have passed "' . $SourceFilename . '" through directly, but skipping due to phpThumbDebug', __FILE__, __LINE__);
break;
}
SendSaveAsFileHeaderIfNeeded($phpThumb->getimagesizeinfo);
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', @filemtime($SourceFilename)) . ' GMT');
if ($contentType = phpthumb_functions::ImageTypeToMIMEtype(@$phpThumb->getimagesizeinfo[2])) {
header('Content-Type: ' . $contentType);
}
echo file_get_contents($SourceFilename);
exit;
} else {
$phpThumb->DebugMessage('Not passing "' . $SourceFilename . '" through directly because ($phpThumb->config_disable_onlycreateable_passthru = "' . $phpThumb->config_disable_onlycreateable_passthru . '") and ' . $theImageCreateFunction . '() failed', __FILE__, __LINE__);
break;
}
} else {
$phpThumb->DebugMessage('Not passing "' . $SourceFilename . '" through directly because getimagesize() failed', __FILE__, __LINE__);
break;
}
break;
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[5]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '5')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
// check to see if file already exists in cache, and output it with no processing if it does
$phpThumb->SetCacheFilename();
if (@is_readable($phpThumb->cache_filename)) {
RedirectToCachedFile();
} else {
$phpThumb->DebugMessage('Cached file "' . $phpThumb->cache_filename . '" does not exist, processing as normal', __FILE__, __LINE__);
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[6]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '6')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
if ($phpThumb->rawImageData) {
// great
} elseif (!empty($_GET['new'])) {
// generate a blank image resource of the specified size/background color/opacity
if (($phpThumb->w <= 0) || ($phpThumb->h <= 0)) {
$phpThumb->ErrorImage('"w" and "h" parameters required for "new"');
}
@list($bghexcolor, $opacity) = explode('|', $_GET['new']);
if (!phpthumb_functions::IsHexColor($bghexcolor)) {
$phpThumb->ErrorImage('BGcolor parameter for "new" is not valid');
}
$opacity = ('' !== $opacity ? $opacity : 100);
if ($phpThumb->gdimg_source = phpthumb_functions::ImageCreateFunction($phpThumb->w, $phpThumb->h)) {
$alpha = (100 - min(100, max(0, $opacity))) * 1.27;
if ($alpha) {
$phpThumb->setParameter('is_alpha', true);
imagealphablending($phpThumb->gdimg_source, false);
imagesavealpha($phpThumb->gdimg_source, true);
}
$new_background_color = phpthumb_functions::ImageHexColorAllocate($phpThumb->gdimg_source, $bghexcolor, false, $alpha);
imagefilledrectangle($phpThumb->gdimg_source, 0, 0, $phpThumb->w, $phpThumb->h, $new_background_color);
} else {
$phpThumb->ErrorImage('failed to create "new" image (' . $phpThumb->w . 'x' . $phpThumb->h . ')');
}
} elseif (!$phpThumb->src) {
$phpThumb->ErrorImage('Usage: ' . $_SERVER['PHP_SELF'] . '?src=/path/and/filename.jpg' . "\n" . 'read Usage comments for details');
} elseif (preg_match('#^([a-z0-9]+)://#i', $_GET['src'], $protocol_matches)) {
if (preg_match('#^(f|ht)tps?://#i', $_GET['src'])) {
$phpThumb->DebugMessage('$phpThumb->src (' . $phpThumb->src . ') is remote image, attempting to download', __FILE__, __LINE__);
if ($phpThumb->config_http_user_agent) {
$phpThumb->DebugMessage('Setting "user_agent" to "' . $phpThumb->config_http_user_agent . '"', __FILE__, __LINE__);
ini_set('user_agent', $phpThumb->config_http_user_agent);
}
$cleanedupurl = phpthumb_functions::CleanUpURLencoding($phpThumb->src);
$phpThumb->DebugMessage('CleanUpURLencoding(' . $phpThumb->src . ') returned "' . $cleanedupurl . '"', __FILE__, __LINE__);
$phpThumb->src = $cleanedupurl;
unset($cleanedupurl);
if ($rawImageData = phpthumb_functions::SafeURLread($phpThumb->src, $error, $phpThumb->config_http_fopen_timeout, $phpThumb->config_http_follow_redirect)) {
$phpThumb->DebugMessage('SafeURLread(' . $phpThumb->src . ') succeeded' . ($error ? ' with messages: "' . $error . '"' : ''), __FILE__, __LINE__);
$phpThumb->DebugMessage('Setting source data from URL "' . $phpThumb->src . '"', __FILE__, __LINE__);
$phpThumb->setSourceData($rawImageData, urlencode($phpThumb->src));
} else {
$phpThumb->ErrorImage($error);
}
} else {
$phpThumb->ErrorImage('only FTP and HTTP/HTTPS protocols are allowed, "' . $protocol_matches[1] . '" is not');
}
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[7]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '7')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
$phpThumb->GenerateThumbnail();
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[8]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '8')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
if (!empty($phpThumb->config_high_security_enabled) && !empty($_GET['nocache'])) {
// cache disabled, don't write cachefile
} else {
phpthumb_functions::EnsureDirectoryExists(dirname($phpThumb->cache_filename));
if (is_writable(dirname($phpThumb->cache_filename)) || (file_exists($phpThumb->cache_filename) && is_writable($phpThumb->cache_filename))) {
$phpThumb->CleanUpCacheDirectory();
if ($phpThumb->RenderToFile($phpThumb->cache_filename) && is_readable($phpThumb->cache_filename)) {
chmod($phpThumb->cache_filename, 0644);
RedirectToCachedFile();
} else {
$phpThumb->DebugMessage('Failed: RenderToFile(' . $phpThumb->cache_filename . ')', __FILE__, __LINE__);
}
} else {
$phpThumb->DebugMessage('Cannot write to $phpThumb->cache_filename (' . $phpThumb->cache_filename . ') because that directory (' . dirname($phpThumb->cache_filename) . ') is not writable', __FILE__, __LINE__);
}
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[9]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '9')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////
if (!$phpThumb->OutputThumbnail()) {
$phpThumb->ErrorImage('Error in OutputThumbnail():' . "\n" . $phpThumb->debugmessages[count($phpThumb->debugmessages) - 1]);
}
////////////////////////////////////////////////////////////////
// Debug output, to try and help me diagnose problems
$phpThumb->DebugTimingMessage('phpThumbDebug[10]', __FILE__, __LINE__);
if (isset($_GET['phpThumbDebug']) && ($_GET['phpThumbDebug'] == '10')) {
$phpThumb->phpThumbDebug();
}
////////////////////////////////////////////////////////////////