protected function warning($text) { return $this->getid3->warning($text); }
public function __construct(getID3 $getid3, $algorithm) { $this->getid3 = $getid3; // Check algorithm if (!preg_match('/^(md5|sha1)$/', $algorithm)) { throw new getid3_exception('Unsupported algorithm, "' . $algorithm . '", in GetHashdata()'); } //// Handle ogg vorbis files if (@$getid3->info['fileformat'] == 'ogg' && @$getid3->info['audio']['dataformat'] == 'vorbis') { // We cannot get an identical md5_data value for Ogg files where the comments // span more than 1 Ogg page (compared to the same audio data with smaller // comments) using the normal getID3() method of MD5'ing the data between the // end of the comments and the end of the file (minus any trailing tags), // because the page sequence numbers of the pages that the audio data is on // do not match. Under normal circumstances, where comments are smaller than // the nominal 4-8kB page size, then this is not a problem, but if there are // very large comments, the only way around it is to strip off the comment // tags with vorbiscomment and MD5 that file. // This procedure must be applied to ALL Ogg files, not just the ones with // comments larger than 1 page, because the below method simply MD5's the // whole file with the comments stripped, not just the portion after the // comments block (which is the standard getID3() method. // The above-mentioned problem of comments spanning multiple pages and changing // page sequence numbers likely happens for OggSpeex and OggFLAC as well, but // currently vorbiscomment only works on OggVorbis files. if ((bool) ini_get('safe_mode')) { throw new getid3_exception('PHP running in Safe Mode - cannot make system call to vorbiscomment[.exe] needed for ' . $algorithm . '_data.'); } if (!preg_match('/^Vorbiscomment /', `vorbiscomment --version 2>&1`)) { throw new getid3_exception('vorbiscomment[.exe] binary not found in path. UNIX: typically /usr/bin. Windows: typically c:\\windows\\system32.'); } // Prevent user from aborting script $old_abort = ignore_user_abort(true); // Create empty file $empty = tempnam('*', 'getID3'); touch($empty); // Use vorbiscomment to make temp file without comments $temp = tempnam('*', 'getID3'); $command_line = 'vorbiscomment -w -c ' . escapeshellarg($empty) . ' ' . escapeshellarg(realpath($getid3->filename)) . ' ' . escapeshellarg($temp) . ' 2>&1'; // Error from vorbiscomment if ($vorbis_comment_error = `{$command_line}`) { throw new getid3_exception('System call to vorbiscomment[.exe] failed.'); } // Get hash of newly created file $hash_function = $algorithm . '_file'; $getid3->info[$algorithm . '_data'] = $hash_function($temp); // Clean up unlink($empty); unlink($temp); // Reset abort setting ignore_user_abort($old_abort); // Return success return true; } //// Handle other file formats // Get hash from part of file if (@$getid3->info['avdataoffset'] || @$getid3->info['avdataend'] && @$getid3->info['avdataend'] < $getid3->info['filesize']) { if ((bool) ini_get('safe_mode')) { $getid3->warning('PHP running in Safe Mode - backtick operator not available, using slower non-system-call ' . $algorithm . ' algorithm.'); $hash_function = 'hash_file_partial_safe_mode'; } else { $hash_function = 'hash_file_partial'; } $getid3->info[$algorithm . '_data'] = $this->{$hash_function}($getid3->filename, $getid3->info['avdataoffset'], $getid3->info['avdataend'], $algorithm); } else { $hash_function = $algorithm . '_file'; $getid3->info[$algorithm . '_data'] = $hash_function($getid3->filename); } }