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;
}
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 (eregi('302 [a-z ]+; Location\\: (http.*)', $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 {
$error .= '"allow_url_fopen" disabled; ';
}
return false;
}
function SetCacheFilename()
{
if (!is_null($this->cache_filename)) {
$this->DebugMessage('$this->cache_filename already set, skipping SetCacheFilename()', __FILE__, __LINE__);
return true;
}
$this->setOutputFormat();
$this->setCacheDirectory();
if (!$this->config_cache_directory) {
$this->DebugMessage('SetCacheFilename() failed because $this->config_cache_directory is empty', __FILE__, __LINE__);
return false;
}
if (!$this->sourceFilename && !$this->rawImageData && $this->src) {
$this->sourceFilename = $this->ResolveFilenameToAbsolute($this->src);
}
if ($this->config_cache_default_only_suffix && $this->sourceFilename) {
// simplified cache filenames:
// only use default parameters in phpThumb.config.php
// substitute source filename into * in $this->config_cache_default_only_suffix
// (eg: '*_thumb' becomes 'picture_thumb.jpg')
if (strpos($this->config_cache_default_only_suffix, '*') === false) {
$this->DebugMessage('aborting simplified caching filename because no * in "' . $this->config_cache_default_only_suffix . '"', __FILE__, __LINE__);
} else {
preg_match('#(.+)(\\.[a-z0-9]+)?$#i', basename($this->sourceFilename), $matches);
$this->cache_filename = $this->config_cache_directory . DIRECTORY_SEPARATOR . rawurlencode(str_replace('*', @$matches[1], $this->config_cache_default_only_suffix)) . '.' . strtolower($this->thumbnailFormat);
return true;
}
}
$this->cache_filename = '';
$broad_directory_name = '';
if ($this->new) {
$broad_directory_name = strtolower(md5($this->new));
$this->cache_filename .= '_new' . $broad_directory_name;
} elseif ($this->md5s) {
// source image MD5 hash provided
$this->DebugMessage('SetCacheFilename() _raw set from $this->md5s = "' . $this->md5s . '"', __FILE__, __LINE__);
$broad_directory_name = $this->md5s;
$this->cache_filename .= '_raw' . $this->md5s;
} elseif (!$this->src && $this->rawImageData) {
$this->DebugMessage('SetCacheFilename() _raw set from md5($this->rawImageData) = "' . md5($this->rawImageData) . '"', __FILE__, __LINE__);
$broad_directory_name = strtolower(md5($this->rawImageData));
$this->cache_filename .= '_raw' . $broad_directory_name;
} else {
$this->DebugMessage('SetCacheFilename() _src set from md5($this->sourceFilename) "' . $this->sourceFilename . '" = "' . md5($this->sourceFilename) . '"', __FILE__, __LINE__);
$broad_directory_name = strtolower(md5($this->sourceFilename));
$this->cache_filename .= '_src' . $broad_directory_name;
}
if (@$_SERVER['HTTP_REFERER'] && $this->config_nooffsitelink_enabled) {
$parsed_url1 = @phpthumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
$parsed_url2 = @phpthumb_functions::ParseURLbetter('http://' . @$_SERVER['HTTP_HOST']);
if (@$parsed_url1['host'] && @$parsed_url2['host'] && $parsed_url1['host'] != $parsed_url2['host']) {
// include "_offsite" only if nooffsitelink_enabled and if referrer doesn't match the domain of the current server
$this->cache_filename .= '_offsite';
}
}
$ParametersString = '';
if ($this->fltr && is_array($this->fltr)) {
$ParametersString .= '_fltr' . implode('_fltr', $this->fltr);
}
$FilenameParameters1 = array('ar', 'bg', 'bc', 'far', 'sx', 'sy', 'sw', 'sh', 'zc');
foreach ($FilenameParameters1 as $key) {
if ($this->{$key}) {
$ParametersString .= '_' . $key . $this->{$key};
}
}
$FilenameParameters2 = array('h', 'w', 'wl', 'wp', 'ws', 'hp', 'hs', 'xto', 'ra', 'iar', 'aoe', 'maxb', 'sfn', 'dpi');
foreach ($FilenameParameters2 as $key) {
if ($this->{$key}) {
$ParametersString .= '_' . $key . intval($this->{$key});
}
}
if ($this->thumbnailFormat == 'jpeg') {
// only JPEG output has variable quality option
$ParametersString .= '_q' . intval($this->thumbnailQuality);
}
$this->DebugMessage('SetCacheFilename() _par set from md5(' . $ParametersString . ')', __FILE__, __LINE__);
$this->cache_filename .= '_par' . strtolower(md5($ParametersString));
if ($this->md5s) {
// source image MD5 hash provided
// do not source image modification date --
// cached image will be used even if file was modified or removed
} elseif (!$this->config_cache_source_filemtime_ignore_remote && preg_match('#^(f|ht)tps?\\://#i', $this->src)) {
$this->cache_filename .= '_dat' . intval(phpthumb_functions::filedate_remote($this->src));
} elseif (!$this->config_cache_source_filemtime_ignore_local && $this->src && !$this->rawImageData) {
$this->cache_filename .= '_dat' . intval(@filemtime($this->sourceFilename));
}
$this->cache_filename .= '.' . strtolower($this->thumbnailFormat);
$broad_directories = '';
for ($i = 0; $i < $this->config_cache_directory_depth; $i++) {
$broad_directories .= DIRECTORY_SEPARATOR . substr($broad_directory_name, 0, $i + 1);
}
$this->cache_filename = $this->config_cache_directory . $broad_directories . DIRECTORY_SEPARATOR . $this->config_cache_prefix . rawurlencode($this->cache_filename);
return true;
}
