| commit | author | age | ||
| 4673cc | 1 | <?php |
| 75471e | 2 | require_once(__DIR__.'/FtpConnection.php'); |
| JK | 3 | |
| 4673cc | 4 | function ftp_fetch_if_newer($url, $file = NULL) { |
| JK | 5 | $url = parse_url($url); |
| 6 | if(!isset($url['scheme']) || $url['scheme'] != 'ftp') { | |
| 7 | throw new Exception('Only FTP URLs are supported'); | |
| 8 | } | |
| 9 | if(!isset($url['host'])) { | |
| 10 | throw new Exception('Hostname not present in the URL'); | |
| 11 | } | |
| 12 | if(!isset($url['path'])) { | |
| 13 | throw new Exception('Path component not present in the URL'); | |
| 14 | } | |
| 15 | if(!isset($url['port'])) { | |
| 16 | $url['port'] = 21; | |
| 17 | } | |
| 18 | if(!isset($url['user'])) { | |
| 19 | $url['user'] = 'anonymous'; | |
| 20 | } | |
| 21 | if(!isset($url['pass'])) { | |
| 22 | $url['pass'] = 'anonymous@mpk.jacekk.net'; | |
| 23 | } | |
| 24 | if($file == NULL) { | |
| 25 | $file = basename($url['path']); | |
| 26 | } | |
| 27 | ||
| 28 | $localTime = -1; | |
| 29 | $localSize = -1; | |
| 30 | if(is_file($file)) { | |
| 31 | $localTime = filemtime($file); | |
| 32 | $localSize = filesize($file); | |
| 33 | } | |
| 34 | ||
| 75471e | 35 | $ftp = FtpConnection::create($url['host'], $url['port'], $url['user'], $url['pass']); |
| JK | 36 | $remoteSize = $ftp->size($url['path']); |
| 37 | $remoteTime = $ftp->mdtm($url['path']); | |
| 4673cc | 38 | |
| JK | 39 | $updated = FALSE; |
| 40 | ||
| 978f77 | 41 | if($localTime < $remoteTime || ($localTime == $remoteTime && $localSize != $remoteSize)) { |
| 4673cc | 42 | if(file_exists($file.'.tmp')) { |
| JK | 43 | unlink($file.'.tmp'); |
| 44 | } | |
| 75471e | 45 | $ftp->get($file.'.tmp', $url['path'], FTP_BINARY); |
| JK | 46 | touch($file.'.tmp', $remoteTime); |
| 47 | if(!rename($file.'.tmp', $file)) { | |
| 48 | throw new Exception('Temporary file rename failed'); | |
| 4673cc | 49 | } |
| 75471e | 50 | $updated = TRUE; |
| 4673cc | 51 | } |
| JK | 52 | |
| 53 | return $updated; | |
| 54 | } | |
| 55 | ||
| 56 | function fetch($url, $file = NULL) { | |
| 57 | if($file == NULL) { | |
| 58 | $file = basename($url['url']); | |
| 59 | } | |
| 60 | $data = file_get_contents($url); | |
| 61 | if($data === FALSE) { | |
| 62 | throw new Exception('URL fetch failed'); | |
| 63 | } | |
| 64 | if(file_put_contents($file.'.tmp', $data) === FALSE) { | |
| 65 | throw new Exception('Temporary file creation failed'); | |
| 66 | } | |
| 67 | if(!rename($file.'.tmp', $file)) { | |
| 68 | throw new Exception('Temporary file rename failed'); | |
| 69 | } | |
| 70 | } | |
