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