/**
* Save this meta file back up to the FTP server.
*
* @throws \Exception
*/
public function saveMetas(){
if($this->_contents === null){
// Contents never loaded, nothing to save.
return;
}
if(!$this->_changed){
// File wasn't changed, nothing to save.
return;
}
$remotefile = $this->_dir . '.ftpmetas';
// Make sure the local directory exists and is writable first!
// This will effectively touch the file to ensure it's writable and everything.
$this->_local->putContents('');
$fh = fopen($this->_local->getFilename(), 'w');
if(!$fh){
throw new \Exception('Unable to open ' . $this->_local->getFilename() . ' for writing.');
}
// Write the current header.
fputcsv($fh, ['filename', 'hash', 'modified', 'size']);
// And each line.
foreach($this->_contents as $c){
fputcsv($fh, array_values($c));
}
fclose($fh);
// And publish to the FTP server.
ftp_put($this->_ftp->getConn(), $remotefile, $this->_local->getFilename(), FTP_BINARY);
$this->_changed = false;
}
/**
* Get the temporary local version of the file.
* This is useful for doing operations such as hash and identicalto.
*
* @return FileLocal
*/
protected function _getTmpLocal() {
if ($this->_tmplocal === null) {
$f = md5($this->getFilename());
// Gotta love obviously-named flags.
$needtodownload = true;
$this->_tmplocal = Filestore\Factory::File('tmp/remotefile-cache/' . $f);
// File exists already! Check and see if it needs to be redownloaded.
if ($this->cacheable && $this->_tmplocal->exists()) {
// Lookup this file in the system cache.
$systemcachedata = Cache::Get('remotefile-cache-header-' . $f);
if ($systemcachedata && isset($systemcachedata['headers'])) {
// I can only look them up if the cache is available.
// First check will be the expires header.
if(isset($systemcachedata['headers']['Expires']) && strtotime($systemcachedata['headers']['Expires']) > time()){
$needtodownload = false;
// And set the headers!
// This is required
$this->_headers = $systemcachedata['headers'];
$this->_response = $systemcachedata['response'];
}
// Next, try ETag.
elseif ($this->_getHeader('ETag') && isset($systemcachedata['headers']['ETag'])) {
$needtodownload = ($this->_getHeader('ETag') != $systemcachedata['headers']['ETag']);
}
// No? How 'bout
elseif ($this->_getHeader('Last-Modified') && isset($systemcachedata['headers']['Last-Modified'])) {
$needtodownload = ($this->_getHeader('Last-Modified') != $systemcachedata['headers']['Last-Modified']);
}
// Still no? The default is to download it anyway.
}
}
if ($needtodownload || !$this->cacheable) {
// Make sure that the headers are updated, this is a requirement to use the 302 tag.
$this->_getHeaders();
if(($this->_response == '302' || $this->_response == '301') && $this->_redirectFile !== null){
$this->_tmplocal = $this->_redirectFile->_getTmpLocal();
}
else{
// BTW, use cURL.
$curl = curl_init();
curl_setopt_array(
$curl, array(
CURLOPT_HEADER => false,
CURLOPT_NOBODY => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_URL => $this->getURL(),
CURLOPT_HTTPHEADER => \Core::GetStandardHTTPHeaders(true),
)
);
$result = curl_exec($curl);
if($result === false){
switch(curl_errno($curl)){
case CURLE_COULDNT_CONNECT:
case CURLE_COULDNT_RESOLVE_HOST:
case CURLE_COULDNT_RESOLVE_PROXY:
$this->_response = 404;
return $this->_tmplocal;
break;
default:
$this->_response = 500;
return $this->_tmplocal;
break;
}
}
curl_close($curl);
// Copy the data down to the local file.
$this->_tmplocal->putContents($result);
}
// And remember this header data for nexttime.
Cache::Set(
'remotefile-cache-header-' . $f,
[
'headers' => $this->_getHeaders(),
'response' => $this->_response,
]
);
}
}
return $this->_tmplocal;
}
