function RedirectToCachedFile()
{
global $phpThumb, $PHPTHUMB_CONFIG;
$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 ($phpThumb->config_nooffsitelink_enabled && @$_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: readfile(' . $phpThumb->cache_filename . ')', __FILE__, __LINE__);
}
} else {
if (headers_sent()) {
$phpThumb->ErrorImage('Headers already sent (' . basename(__FILE__) . ' line ' . __LINE__ . ')');
exit;
}
SendSaveAsFileHeaderIfNeeded();
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT');
if (@$_SERVER['HTTP_IF_MODIFIED_SINCE'] && $nModified == strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) && @$_SERVER['SERVER_PROTOCOL']) {
header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
exit;
}
if ($getimagesize = @GetImageSize($phpThumb->cache_filename)) {
header('Content-Type: ' . phpThumb_functions::ImageTypeToMIMEtype($getimagesize[2]));
} elseif (preg_match('#\\.ico$#i', $phpThumb->cache_filename)) {
header('Content-Type: image/x-icon');
}
if (!@$PHPTHUMB_CONFIG['cache_force_passthru'] && preg_match('#^' . preg_quote($nice_docroot) . '(.*)$#', $nice_cachefile, $matches)) {
header('Location: ' . dirname($matches[1]) . '/' . urlencode(basename($matches[1])));
} else {
@readfile($phpThumb->cache_filename);
}
exit;
}
return true;
}
static function SafeURLread($url, &$error, $timeout = 10, $followredirects = true)
{
$error = '';
$parsed_url = phpThumb_functions::ParseURLbetter($url);
$alreadyLookedAtURLs[trim($url)] = true;
while (true) {
$tryagain = false;
$rawData = phpThumb_functions::URLreadFsock(@$parsed_url['host'], @$parsed_url['path'] . '?' . @$parsed_url['query'], $errstr, true, @$parsed_url['port'] ? @$parsed_url['port'] : 80, $timeout);
if (preg_match('#302 [a-z ]+; Location\\: (http.*)#i', $errstr, $matches)) {
$matches[1] = trim(@$matches[1]);
if (!@$alreadyLookedAtURLs[$matches[1]]) {
// loop through and examine new URL
$error .= 'URL "' . $url . '" redirected to "' . $matches[1] . '"';
$tryagain = true;
$alreadyLookedAtURLs[$matches[1]] = true;
$parsed_url = phpThumb_functions::ParseURLbetter($matches[1]);
}
}
if (!$tryagain) {
break;
}
}
if ($rawData === false) {
$error .= 'Error opening "' . $url . '":' . "\n\n" . $errstr;
return false;
} elseif ($rawData === null) {
// fall through
$error .= 'Error opening "' . $url . '":' . "\n\n" . $errstr;
} else {
return $rawData;
}
if (function_exists('curl_version') && !phpThumb_functions::FunctionIsDisabled('curl_exec')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
$rawData = curl_exec($ch);
curl_close($ch);
if (strlen($rawData) > 0) {
$error .= 'CURL succeeded (' . strlen($rawData) . ' bytes); ';
return $rawData;
}
$error .= 'CURL available but returned no data; ';
} else {
$error .= 'CURL unavailable; ';
}
$BrokenURLfopenPHPversions = array('4.4.2');
if (in_array(phpversion(), $BrokenURLfopenPHPversions)) {
$error .= 'fopen(URL) broken in PHP v' . phpversion() . '; ';
} elseif (@ini_get('allow_url_fopen')) {
$rawData = '';
$error_fopen = '';
ob_start();
if ($fp = fopen($url, 'rb')) {
do {
$buffer = fread($fp, 8192);
$rawData .= $buffer;
} while (strlen($buffer) > 0);
fclose($fp);
} else {
$error_fopen .= trim(strip_tags(ob_get_contents()));
}
ob_end_clean();
$error .= $error_fopen;
if (!$error_fopen) {
$error .= '; "allow_url_fopen" succeeded (' . strlen($rawData) . ' bytes); ';
return $rawData;
}
$error .= '; "allow_url_fopen" enabled but returned no data (' . $error_fopen . '); ';
} else {
$error .= '"allow_url_fopen" disabled; ';
}
return false;
}
