1938 lines
82 KiB
PHP
1938 lines
82 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <getid3@users.sourceforge.net> //
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// available at http://getid3.sourceforge.net ///
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/////////////////////////////////////////////////////////////////
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// //
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// getid3.putid3.php - part of getID3() //
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// See getid3.readme.txt for more details //
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// //
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/////////////////////////////////////////////////////////////////
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function GenerateID3v2TagFlags($majorversion=4, $Unsynchronisation=false, $Compression=false, $ExtendedHeader=false, $Experimental=false, $Footer=false) {
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if ($majorversion == 4) {
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// %abcd0000
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$flag = Bool2IntString($Unsynchronisation); // a - Unsynchronisation
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$flag .= Bool2IntString($ExtendedHeader); // b - Extended header
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$flag .= Bool2IntString($Experimental); // c - Experimental indicator
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$flag .= Bool2IntString($Footer); // d - Footer present
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$flag .= '0000';
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} elseif ($majorversion == 3) {
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// %abc00000
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$flag = Bool2IntString($Unsynchronisation); // a - Unsynchronisation
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$flag .= Bool2IntString($ExtendedHeader); // b - Extended header
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$flag .= Bool2IntString($Experimental); // c - Experimental indicator
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$flag .= '00000';
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} elseif ($majorversion == 2) {
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// %ab000000
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$flag = Bool2IntString($Unsynchronisation); // a - Unsynchronisation
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$flag .= Bool2IntString($Compression); // b - Compression
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$flag .= '000000';
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} else {
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return false;
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}
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return chr(bindec($flag));
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}
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function GenerateID3v2FrameFlags($majorversion=4, $TagAlter=false, $FileAlter=false, $ReadOnly=false, $Compression=false, $Encryption=false, $GroupingIdentity=false, $Unsynchronisation=false, $DataLengthIndicator=false) {
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if ($majorversion == 4) {
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// %0abc0000 %0h00kmnp
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$flag1 = '0';
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$flag1 .= Bool2IntString($TagAlter); // a - Tag alter preservation (true == discard)
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$flag1 .= Bool2IntString($FileAlter); // b - File alter preservation (true == discard)
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$flag1 .= Bool2IntString($ReadOnly); // c - Read only (true == read only)
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$flag1 .= '0000';
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$flag2 = '0';
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$flag2 .= Bool2IntString($GroupingIdentity); // h - Grouping identity (true == contains group information)
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$flag2 .= '00';
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$flag2 .= Bool2IntString($Compression); // k - Compression (true == compressed)
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$flag2 .= Bool2IntString($Encryption); // m - Encryption (true == encrypted)
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$flag2 .= Bool2IntString($Unsynchronisation); // n - Unsynchronisation (true == unsynchronised)
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$flag2 .= Bool2IntString($DataLengthIndicator); // p - Data length indicator (true == data length indicator added)
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} elseif ($majorversion == 3) {
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// %abc00000 %ijk00000
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$flag1 = Bool2IntString($TagAlter); // a - Tag alter preservation (true == discard)
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$flag1 .= Bool2IntString($FileAlter); // b - File alter preservation (true == discard)
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$flag1 .= Bool2IntString($ReadOnly); // c - Read only (true == read only)
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$flag1 .= '00000';
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$flag2 = Bool2IntString($Compression); // i - Compression (true == compressed)
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$flag2 .= Bool2IntString($Encryption); // j - Encryption (true == encrypted)
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$flag2 .= Bool2IntString($GroupingIdentity); // k - Grouping identity (true == contains group information)
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$flag2 .= '00000';
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} else {
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return false;
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}
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return chr(bindec($flag1)).chr(bindec($flag2));
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}
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function GenerateID3v2FrameData($frame_name, $frame_data, $majorversion=4, $showerrors=false) {
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if (!IsValidID3v2FrameName($frame_name, $majorversion)) {
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return false;
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}
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$error = '';
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$framedata = '';
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require_once(GETID3_INCLUDEPATH.'getid3.frames.php');
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if ($majorversion == 2) {
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ksort($frame_data);
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reset($frame_data);
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switch ($frame_name) {
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case 'TXX':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'WXX':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'IPL':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'MCI':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'ETC':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'MLL':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'STC':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'ULT':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'SLT':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'COM':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'RVA':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'EQU':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'REV':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'PIC':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'GEO':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'CNT':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'POP':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'BUF':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'CRM':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'CRA':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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case 'LNK':
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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break;
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default:
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if ($frame_name{0} == 'T') {
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// T??
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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} elseif ($frame_name{0} == 'W') {
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// W??
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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} else {
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$error .= $frame_name.' not yet supported in putid3.php<BR>';
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return false;
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}
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}
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} else { // $majorversion > 2
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switch ($frame_name) {
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case 'UFID':
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// 4.1 UFID Unique file identifier
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// Owner identifier <text string> $00
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// Identifier <up to 64 bytes binary data>
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if (strlen($frame_data['data']) > 64) {
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$error .= 'Identifier not allowed to be longer than 64 bytes in '.$frame_name.' (supplied data was '.strlen($frame_data['data']).' bytes long)<BR>';
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} else {
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$framedata .= str_replace(chr(0), '', $frame_data['ownerid']).chr(0);
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$framedata .= substr($frame_data['data'], 0, 64); // max 64 bytes - truncate anything longer
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}
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break;
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case 'TXXX':
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// 4.2.2 TXXX User defined text information frame
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// Text encoding $xx
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// Description <text string according to encoding> $00 (00)
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// Value <text string according to encoding>
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
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$framedata .= $frame_data['data'];
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}
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break;
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case 'WXXX':
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// 4.3.2 WXXX User defined URL link frame
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// Text encoding $xx
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// Description <text string according to encoding> $00 (00)
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// URL <text string>
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} elseif (!isset($frame_data['url']) || !IsValidURL($frame_data['url'], false, false)) {
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$error .= 'Invalid URL in '.$frame_name.' ('.$frame_data['url'].')<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
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$framedata .= $frame_data['url'];
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}
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break;
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case 'IPLS':
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// 4.4 IPLS Involved people list (ID3v2.3 only)
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// Text encoding $xx
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// People list strings <textstrings>
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= $frame_data['data'];
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}
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break;
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case 'MCDI':
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// 4.4 MCDI Music CD identifier
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// CD TOC <binary data>
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$framedata .= $frame_data['data'];
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break;
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case 'ETCO':
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// 4.5 ETCO Event timing codes
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// Time stamp format $xx
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// Where time stamp format is:
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// $01 (32-bit value) MPEG frames from beginning of file
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// $02 (32-bit value) milliseconds from beginning of file
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// Followed by a list of key events in the following format:
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// Type of event $xx
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// Time stamp $xx (xx ...)
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// The 'Time stamp' is set to zero if directly at the beginning of the sound
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// or after the previous event. All events MUST be sorted in chronological order.
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if (($frame_data['timestampformat'] > 2) || ($frame_data['timestampformat'] < 1)) {
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$error .= 'Invalid Time Stamp Format byte in '.$frame_name.' ('.$frame_data['timestampformat'].')<BR>';
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} else {
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$framedata .= chr($frame_data['timestampformat']);
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foreach ($frame_data as $key => $val) {
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if (!IsValidETCOevent($val['typeid'], $majorversion)) {
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$error .= 'Invalid Event Type byte in '.$frame_name.' ('.$val['typeid'].')<BR>';
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} elseif (($key != 'timestampformat') && ($key != 'flags')) {
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if (($val['timestamp'] > 0) && ($previousETCOtimestamp >= $val['timestamp'])) {
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// The 'Time stamp' is set to zero if directly at the beginning of the sound
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// or after the previous event. All events MUST be sorted in chronological order.
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$error .= 'Out-of-order timestamp in '.$frame_name.' ('.$val['timestamp'].') for Event Type ('.$val['typeid'].')<BR>';
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} else {
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$framedata .= chr($val['typeid']);
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$framedata .= BigEndian2String($val['timestamp'], 4, false);
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}
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}
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}
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}
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break;
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case 'MLLT':
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// 4.6 MLLT MPEG location lookup table
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// MPEG frames between reference $xx xx
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// Bytes between reference $xx xx xx
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// Milliseconds between reference $xx xx xx
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// Bits for bytes deviation $xx
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// Bits for milliseconds dev. $xx
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// Then for every reference the following data is included;
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// Deviation in bytes %xxx....
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// Deviation in milliseconds %xxx....
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if (($frame_data['framesbetweenreferences'] > 0) && ($frame_data['framesbetweenreferences'] <= 65535)) {
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$framedata .= BigEndian2String($frame_data['framesbetweenreferences'], 2, false);
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} else {
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$error .= 'Invalid MPEG Frames Between References in '.$frame_name.' ('.$frame_data['framesbetweenreferences'].')<BR>';
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}
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if (($frame_data['bytesbetweenreferences'] > 0) && ($frame_data['bytesbetweenreferences'] <= 16777215)) {
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$framedata .= BigEndian2String($frame_data['bytesbetweenreferences'], 3, false);
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} else {
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$error .= 'Invalid bytes Between References in '.$frame_name.' ('.$frame_data['bytesbetweenreferences'].')<BR>';
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}
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if (($frame_data['msbetweenreferences'] > 0) && ($frame_data['msbetweenreferences'] <= 16777215)) {
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$framedata .= BigEndian2String($frame_data['msbetweenreferences'], 3, false);
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} else {
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$error .= 'Invalid Milliseconds Between References in '.$frame_name.' ('.$frame_data['msbetweenreferences'].')<BR>';
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}
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if (!IsWithinBitRange($frame_data['bitsforbytesdeviation'], 8, false)) {
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if (($frame_data['bitsforbytesdeviation'] % 4) == 0) {
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$framedata .= chr($frame_data['bitsforbytesdeviation']);
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} else {
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$error .= 'Bits For Bytes Deviation in '.$frame_name.' ('.$frame_data['bitsforbytesdeviation'].') must be a multiple of 4.<BR>';
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}
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} else {
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$error .= 'Invalid Bits For Bytes Deviation in '.$frame_name.' ('.$frame_data['bitsforbytesdeviation'].')<BR>';
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}
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if (!IsWithinBitRange($frame_data['bitsformsdeviation'], 8, false)) {
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if (($frame_data['bitsformsdeviation'] % 4) == 0) {
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$framedata .= chr($frame_data['bitsformsdeviation']);
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} else {
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$error .= 'Bits For Milliseconds Deviation in '.$frame_name.' ('.$frame_data['bitsforbytesdeviation'].') must be a multiple of 4.<BR>';
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}
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} else {
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$error .= 'Invalid Bits For Milliseconds Deviation in '.$frame_name.' ('.$frame_data['bitsformsdeviation'].')<BR>';
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}
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foreach ($frame_data as $key => $val) {
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if (($key != 'framesbetweenreferences') && ($key != 'bytesbetweenreferences') && ($key != 'msbetweenreferences') && ($key != 'bitsforbytesdeviation') && ($key != 'bitsformsdeviation') && ($key != 'flags')) {
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$unwrittenbitstream .= str_pad(Dec2Bin($val['bytedeviation']), $frame_data['bitsforbytesdeviation'], '0', STR_PAD_LEFT);
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$unwrittenbitstream .= str_pad(Dec2Bin($val['msdeviation']), $frame_data['bitsformsdeviation'], '0', STR_PAD_LEFT);
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}
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}
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for ($i=0;$i<strlen($unwrittenbitstream);$i+=8) {
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$highnibble = bindec(substr($unwrittenbitstream, $i, 4)) << 4;
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$lownibble = bindec(substr($unwrittenbitstream, $i + 4, 4));
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$framedata .= chr($highnibble & $lownibble);
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}
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break;
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case 'SYTC':
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// 4.7 SYTC Synchronised tempo codes
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// Time stamp format $xx
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// Tempo data <binary data>
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// Where time stamp format is:
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// $01 (32-bit value) MPEG frames from beginning of file
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// $02 (32-bit value) milliseconds from beginning of file
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if (($frame_data['timestampformat'] > 2) || ($frame_data['timestampformat'] < 1)) {
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$error .= 'Invalid Time Stamp Format byte in '.$frame_name.' ('.$frame_data['timestampformat'].')<BR>';
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} else {
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$framedata .= chr($frame_data['timestampformat']);
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foreach ($frame_data as $key => $val) {
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if (!IsValidETCOevent($val['typeid'], $majorversion)) {
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$error .= 'Invalid Event Type byte in '.$frame_name.' ('.$val['typeid'].')<BR>';
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} elseif (($key != 'timestampformat') && ($key != 'flags')) {
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if (($val['tempo'] < 0) || ($val['tempo'] > 510)) {
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$error .= 'Invalid Tempo (max = 510) in '.$frame_name.' ('.$val['tempo'].') at timestamp ('.$val['timestamp'].')<BR>';
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} else {
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if ($val['tempo'] > 255) {
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$framedata .= chr(255);
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$val['tempo'] -= 255;
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}
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$framedata .= chr($val['tempo']);
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$framedata .= BigEndian2String($val['timestamp'], 4, false);
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}
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}
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}
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}
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break;
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case 'USLT':
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// 4.8 USLT Unsynchronised lyric/text transcription
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// Text encoding $xx
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// Language $xx xx xx
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// Content descriptor <text string according to encoding> $00 (00)
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// Lyrics/text <full text string according to encoding>
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} elseif (LanguageLookup($frame_data['language'], true) == '') {
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$error .= 'Invalid Language in '.$frame_name.' ('.$frame_data['language'].')<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= strtolower($frame_data['language']);
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$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
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$framedata .= $frame_data['data'];
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}
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break;
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case 'SYLT':
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// 4.9 SYLT Synchronised lyric/text
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// Text encoding $xx
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// Language $xx xx xx
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// Time stamp format $xx
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// $01 (32-bit value) MPEG frames from beginning of file
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// $02 (32-bit value) milliseconds from beginning of file
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// Content type $xx
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// Content descriptor <text string according to encoding> $00 (00)
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// Terminated text to be synced (typically a syllable)
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// Sync identifier (terminator to above string) $00 (00)
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// Time stamp $xx (xx ...)
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} elseif (LanguageLookup($frame_data['language'], true) == '') {
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$error .= 'Invalid Language in '.$frame_name.' ('.$frame_data['language'].')<BR>';
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} elseif (($frame_data['timestampformat'] > 2) || ($frame_data['timestampformat'] < 1)) {
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$error .= 'Invalid Time Stamp Format byte in '.$frame_name.' ('.$frame_data['timestampformat'].')<BR>';
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} elseif (!IsValidSYLTtype($frame_data['contenttypeid'], $majorversion)) {
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$error .= 'Invalid Content Type byte in '.$frame_name.' ('.$frame_data['contenttypeid'].')<BR>';
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} elseif (!is_array($frame_data['data'])) {
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$error .= 'Invalid Lyric/Timestamp data in '.$frame_name.' (must be an array)<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= strtolower($frame_data['language']);
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$framedata .= chr($frame_data['timestampformat']);
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$framedata .= chr($frame_data['contenttypeid']);
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$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
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ksort($frame_data['data']);
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foreach ($frame_data['data'] as $key => $val) {
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$framedata .= $val['data'].TextEncodingLookup('terminator', $frame_data['encodingid']);
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$framedata .= BigEndian2String($val['timestamp'], 4, false);
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}
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}
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break;
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case 'COMM':
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// 4.10 COMM Comments
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// Text encoding $xx
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// Language $xx xx xx
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// Short content descrip. <text string according to encoding> $00 (00)
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// The actual text <full text string according to encoding>
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if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
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$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
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} elseif (LanguageLookup($frame_data['language'], true) == '') {
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$error .= 'Invalid Language in '.$frame_name.' ('.$frame_data['language'].')<BR>';
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} else {
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$framedata .= chr($frame_data['encodingid']);
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$framedata .= strtolower($frame_data['language']);
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$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'RVA2':
|
|
// 4.11 RVA2 Relative volume adjustment (2) (ID3v2.4+ only)
|
|
// Identification <text string> $00
|
|
// The 'identification' string is used to identify the situation and/or
|
|
// device where this adjustment should apply. The following is then
|
|
// repeated for every channel:
|
|
// Type of channel $xx
|
|
// Volume adjustment $xx xx
|
|
// Bits representing peak $xx
|
|
// Peak volume $xx (xx ...)
|
|
$framedata .= str_replace(chr(0), '', $frame_data['description']).chr(0);
|
|
foreach ($frame_data as $key => $val) {
|
|
if ($key != 'description') {
|
|
$framedata .= chr($val['channeltypeid']);
|
|
$framedata .= BigEndian2String($val['volumeadjust'], 2, false, true); // signed 16-bit
|
|
if (!IsWithinBitRange($frame_data['bitspeakvolume'], 8, false)) {
|
|
$framedata .= chr($val['bitspeakvolume']);
|
|
if ($val['bitspeakvolume'] > 0) {
|
|
$framedata .= BigEndian2String($val['peakvolume'], ceil($val['bitspeakvolume'] / 8), false, false);
|
|
}
|
|
} else {
|
|
$error .= 'Invalid Bits Representing Peak Volume in '.$frame_name.' ('.$val['bitspeakvolume'].') (range = 0 to 255)<BR>';
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 'RVAD':
|
|
// 4.12 RVAD Relative volume adjustment (ID3v2.3 only)
|
|
// Increment/decrement %00fedcba
|
|
// Bits used for volume descr. $xx
|
|
// Relative volume change, right $xx xx (xx ...) // a
|
|
// Relative volume change, left $xx xx (xx ...) // b
|
|
// Peak volume right $xx xx (xx ...)
|
|
// Peak volume left $xx xx (xx ...)
|
|
// Relative volume change, right back $xx xx (xx ...) // c
|
|
// Relative volume change, left back $xx xx (xx ...) // d
|
|
// Peak volume right back $xx xx (xx ...)
|
|
// Peak volume left back $xx xx (xx ...)
|
|
// Relative volume change, center $xx xx (xx ...) // e
|
|
// Peak volume center $xx xx (xx ...)
|
|
// Relative volume change, bass $xx xx (xx ...) // f
|
|
// Peak volume bass $xx xx (xx ...)
|
|
if (!IsWithinBitRange($frame_data['bitsvolume'], 8, false)) {
|
|
$error .= 'Invalid Bits For Volume Description byte in '.$frame_name.' ('.$frame_data['bitsvolume'].') (range = 1 to 255)<BR>';
|
|
} else {
|
|
$incdecflag .= '00';
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['right']); // a - Relative volume change, right
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['left']); // b - Relative volume change, left
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['rightrear']); // c - Relative volume change, right back
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['leftrear']); // d - Relative volume change, left back
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['center']); // e - Relative volume change, center
|
|
$incdecflag .= Bool2IntString($frame_data['incdec']['bass']); // f - Relative volume change, bass
|
|
$framedata .= chr(bindec($incdecflag));
|
|
$framedata .= chr($frame_data['bitsvolume']);
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['right'], ceil($frame_data['bitsvolume'] / 8), false);
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['left'], ceil($frame_data['bitsvolume'] / 8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['right'], ceil($frame_data['bitsvolume'] / 8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['left'], ceil($frame_data['bitsvolume'] / 8), false);
|
|
if ($frame_data['volumechange']['rightrear'] || $frame_data['volumechange']['leftrear'] ||
|
|
$frame_data['peakvolume']['rightrear'] || $frame_data['peakvolume']['leftrear'] ||
|
|
$frame_data['volumechange']['center'] || $frame_data['peakvolume']['center'] ||
|
|
$frame_data['volumechange']['bass'] || $frame_data['peakvolume']['bass']) {
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['rightrear'], ceil($frame_data['bitsvolume']/8), false);
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['leftrear'], ceil($frame_data['bitsvolume']/8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['rightrear'], ceil($frame_data['bitsvolume']/8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['leftrear'], ceil($frame_data['bitsvolume']/8), false);
|
|
}
|
|
if ($frame_data['volumechange']['center'] || $frame_data['peakvolume']['center'] ||
|
|
$frame_data['volumechange']['bass'] || $frame_data['peakvolume']['bass']) {
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['center'], ceil($frame_data['bitsvolume']/8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['center'], ceil($frame_data['bitsvolume']/8), false);
|
|
}
|
|
if ($frame_data['volumechange']['bass'] || $frame_data['peakvolume']['bass']) {
|
|
$framedata .= BigEndian2String($frame_data['volumechange']['bass'], ceil($frame_data['bitsvolume']/8), false);
|
|
$framedata .= BigEndian2String($frame_data['peakvolume']['bass'], ceil($frame_data['bitsvolume']/8), false);
|
|
}
|
|
}
|
|
break;
|
|
case 'EQU2':
|
|
// 4.12 EQU2 Equalisation (2) (ID3v2.4+ only)
|
|
// Interpolation method $xx
|
|
// $00 Band
|
|
// $01 Linear
|
|
// Identification <text string> $00
|
|
// The following is then repeated for every adjustment point
|
|
// Frequency $xx xx
|
|
// Volume adjustment $xx xx
|
|
if (($frame_data['interpolationmethod'] < 0) || ($frame_data['interpolationmethod'] > 1)) {
|
|
$error .= 'Invalid Interpolation Method byte in '.$frame_name.' ('.$frame_data['interpolationmethod'].') (valid = 0 or 1)<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['interpolationmethod']);
|
|
$framedata .= str_replace(chr(0), '', $frame_data['description']).chr(0);
|
|
foreach ($frame_data['data'] as $key => $val) {
|
|
$framedata .= BigEndian2String(round($key * 2), 2, false);
|
|
$framedata .= BigEndian2String($val, 2, false, true); // signed 16-bit
|
|
}
|
|
}
|
|
break;
|
|
case 'EQUA':
|
|
// 4.12 EQUA Equalisation (ID3v2.3 only)
|
|
// Adjustment bits $xx
|
|
// This is followed by 2 bytes + ('adjustment bits' rounded up to the
|
|
// nearest byte) for every equalisation band in the following format,
|
|
// giving a frequency range of 0 - 32767Hz:
|
|
// Increment/decrement %x (MSB of the Frequency)
|
|
// Frequency (lower 15 bits)
|
|
// Adjustment $xx (xx ...)
|
|
if (!IsWithinBitRange($frame_data['bitsvolume'], 8, false)) {
|
|
$error .= 'Invalid Adjustment Bits byte in '.$frame_name.' ('.$frame_data['bitsvolume'].') (range = 1 to 255)<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['adjustmentbits']);
|
|
foreach ($frame_data as $key => $val) {
|
|
if ($key != 'bitsvolume') {
|
|
if (($key > 32767) || ($key < 0)) {
|
|
$error .= 'Invalid Frequency in '.$frame_name.' ('.$key.') (range = 0 to 32767)<BR>';
|
|
} else {
|
|
if ($val >= 0) {
|
|
// put MSB of frequency to 1 if increment, 0 if decrement
|
|
$key |= 0x8000;
|
|
}
|
|
$framedata .= BigEndian2String($key, 2, false);
|
|
$framedata .= BigEndian2String($val, ceil($frame_data['adjustmentbits'] / 8), false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 'RVRB':
|
|
// 4.13 RVRB Reverb
|
|
// Reverb left (ms) $xx xx
|
|
// Reverb right (ms) $xx xx
|
|
// Reverb bounces, left $xx
|
|
// Reverb bounces, right $xx
|
|
// Reverb feedback, left to left $xx
|
|
// Reverb feedback, left to right $xx
|
|
// Reverb feedback, right to right $xx
|
|
// Reverb feedback, right to left $xx
|
|
// Premix left to right $xx
|
|
// Premix right to left $xx
|
|
if (!IsWithinBitRange($frame_data['left'], 16, false)) {
|
|
$error .= 'Invalid Reverb Left in '.$frame_name.' ('.$frame_data['left'].') (range = 0 to 65535)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['right'], 16, false)) {
|
|
$error .= 'Invalid Reverb Left in '.$frame_name.' ('.$frame_data['right'].') (range = 0 to 65535)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['bouncesL'], 8, false)) {
|
|
$error .= 'Invalid Reverb Bounces, Left in '.$frame_name.' ('.$frame_data['bouncesL'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['bouncesR'], 8, false)) {
|
|
$error .= 'Invalid Reverb Bounces, Right in '.$frame_name.' ('.$frame_data['bouncesR'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['feedbackLL'], 8, false)) {
|
|
$error .= 'Invalid Reverb Feedback, Left-To-Left in '.$frame_name.' ('.$frame_data['feedbackLL'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['feedbackLR'], 8, false)) {
|
|
$error .= 'Invalid Reverb Feedback, Left-To-Right in '.$frame_name.' ('.$frame_data['feedbackLR'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['feedbackRR'], 8, false)) {
|
|
$error .= 'Invalid Reverb Feedback, Right-To-Right in '.$frame_name.' ('.$frame_data['feedbackRR'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['feedbackRL'], 8, false)) {
|
|
$error .= 'Invalid Reverb Feedback, Right-To-Left in '.$frame_name.' ('.$frame_data['feedbackRL'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['premixLR'], 8, false)) {
|
|
$error .= 'Invalid Premix, Left-To-Right in '.$frame_name.' ('.$frame_data['premixLR'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['premixRL'], 8, false)) {
|
|
$error .= 'Invalid Premix, Right-To-Left in '.$frame_name.' ('.$frame_data['premixRL'].') (range = 0 to 255)<BR>';
|
|
} else {
|
|
$framedata .= BigEndian2String($frame_data['left'], 2, false);
|
|
$framedata .= BigEndian2String($frame_data['right'], 2, false);
|
|
$framedata .= chr($frame_data['bouncesL']);
|
|
$framedata .= chr($frame_data['bouncesR']);
|
|
$framedata .= chr($frame_data['feedbackLL']);
|
|
$framedata .= chr($frame_data['feedbackLR']);
|
|
$framedata .= chr($frame_data['feedbackRR']);
|
|
$framedata .= chr($frame_data['feedbackRL']);
|
|
$framedata .= chr($frame_data['premixLR']);
|
|
$framedata .= chr($frame_data['premixRL']);
|
|
}
|
|
break;
|
|
case 'APIC':
|
|
// 4.14 APIC Attached picture
|
|
// Text encoding $xx
|
|
// MIME type <text string> $00
|
|
// Picture type $xx
|
|
// Description <text string according to encoding> $00 (00)
|
|
// Picture data <binary data>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
|
|
} elseif (!IsValidAPICpicturetype($frame_data['picturetypeid'], $majorversion)) {
|
|
$error .= 'Invalid Picture Type byte in '.$frame_name.' ('.$frame_data['picturetypeid'].') for ID3v2.'.$majorversion.'<BR>';
|
|
} elseif (($majorversion >= 3) && (!IsValidAPICimageformat($frame_data['mime'], $majorversion))) {
|
|
$error .= 'Invalid MIME Type in '.$frame_name.' ('.$frame_data['mime'].') for ID3v2.'.$majorversion.'<BR>';
|
|
} elseif (($frame_data['mime'] == '-->') && (!IsValidURL($frame_data['data'], false, false))) {
|
|
$error .= 'Invalid URL in '.$frame_name.' ('.$frame_data['data'].')<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
$framedata .= str_replace(chr(0), '', $frame_data['mime']).chr(0);
|
|
$framedata .= chr($frame_data['picturetypeid']);
|
|
$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'GEOB':
|
|
// 4.15 GEOB General encapsulated object
|
|
// Text encoding $xx
|
|
// MIME type <text string> $00
|
|
// Filename <text string according to encoding> $00 (00)
|
|
// Content description <text string according to encoding> $00 (00)
|
|
// Encapsulated object <binary data>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
|
|
} elseif (!IsValidMIMEstring($frame_data['mime'])) {
|
|
$error .= 'Invalid MIME Type in '.$frame_name.' ('.$frame_data['mime'].')<BR>';
|
|
} elseif (!$frame_data['description']) {
|
|
$error .= 'Missing Description in '.$frame_name.'<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
$framedata .= str_replace(chr(0), '', $frame_data['mime']).chr(0);
|
|
$framedata .= $frame_data['filename'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'PCNT':
|
|
// 4.16 PCNT Play counter
|
|
// When the counter reaches all one's, one byte is inserted in
|
|
// front of the counter thus making the counter eight bits bigger
|
|
// Counter $xx xx xx xx (xx ...)
|
|
$framedata .= BigEndian2String($frame_data['data'], 4, false);
|
|
break;
|
|
case 'POPM':
|
|
// 4.17 POPM Popularimeter
|
|
// When the counter reaches all one's, one byte is inserted in
|
|
// front of the counter thus making the counter eight bits bigger
|
|
// Email to user <text string> $00
|
|
// Rating $xx
|
|
// Counter $xx xx xx xx (xx ...)
|
|
if (!IsWithinBitRange($frame_data['rating'], 8, false)) {
|
|
$error .= 'Invalid Rating byte in '.$frame_name.' ('.$frame_data['rating'].') (range = 0 to 255)<BR>';
|
|
} elseif (!IsValidEmail($frame_data['email'])) {
|
|
$error .= 'Invalid Email in '.$frame_name.' ('.$frame_data['email'].')<BR>';
|
|
} else {
|
|
$framedata .= str_replace(chr(0), '', $frame_data['email']).chr(0);
|
|
$framedata .= chr($frame_data['rating']);
|
|
$framedata .= BigEndian2String($frame_data['data'], 4, false);
|
|
}
|
|
break;
|
|
case 'RBUF':
|
|
// 4.18 RBUF Recommended buffer size
|
|
// Buffer size $xx xx xx
|
|
// Embedded info flag %0000000x
|
|
// Offset to next tag $xx xx xx xx
|
|
if (!IsWithinBitRange($frame_data['buffersize'], 24, false)) {
|
|
$error .= 'Invalid Buffer Size in '.$frame_name.'<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['nexttagoffset'], 32, false)) {
|
|
$error .= 'Invalid Offset To Next Tag in '.$frame_name.'<BR>';
|
|
} else {
|
|
$framedata .= BigEndian2String($frame_data['buffersize'], 3, false);
|
|
$flag .= '0000000';
|
|
$flag .= Bool2IntString($frame_data['flags']['embededinfo']);
|
|
$framedata .= chr(bindec($flag));
|
|
$framedata .= BigEndian2String($frame_data['nexttagoffset'], 4, false);
|
|
}
|
|
break;
|
|
case 'AENC':
|
|
// 4.19 AENC Audio encryption
|
|
// Owner identifier <text string> $00
|
|
// Preview start $xx xx
|
|
// Preview length $xx xx
|
|
// Encryption info <binary data>
|
|
if (!IsWithinBitRange($frame_data['previewstart'], 16, false)) {
|
|
$error .= 'Invalid Preview Start in '.$frame_name.' ('.$frame_data['previewstart'].')<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['previewlength'], 16, false)) {
|
|
$error .= 'Invalid Preview Length in '.$frame_name.' ('.$frame_data['previewlength'].')<BR>';
|
|
} else {
|
|
$framedata .= str_replace(chr(0), '', $frame_data['ownerid']).chr(0);
|
|
$framedata .= BigEndian2String($frame_data['previewstart'], 2, false);
|
|
$framedata .= BigEndian2String($frame_data['previewlength'], 2, false);
|
|
$framedata .= $frame_data['encryptioninfo'];
|
|
}
|
|
break;
|
|
case 'LINK':
|
|
// 4.20 LINK Linked information
|
|
// Frame identifier $xx xx xx xx
|
|
// URL <text string> $00
|
|
// ID and additional data <text string(s)>
|
|
if (!IsValidID3v2FrameName($frame_data['frameid'], $majorversion)) {
|
|
$error .= 'Invalid Frame Identifier in '.$frame_name.' ('.$frame_data['frameid'].')<BR>';
|
|
} elseif (!IsValidURL($frame_data['url'], true, false)) {
|
|
$error .= 'Invalid URL in '.$frame_name.' ('.$frame_data['url'].')<BR>';
|
|
} elseif ((($frame_data['frameid'] == 'AENC') || ($frame_data['frameid'] == 'APIC') || ($frame_data['frameid'] == 'GEOB') || ($frame_data['frameid'] == 'TXXX')) && ($frame_data['additionaldata'] == '')) {
|
|
$error .= 'Content Descriptor must be specified as additional data for Frame Identifier of '.$frame_data['frameid'].' in '.$frame_name.'<BR>';
|
|
} elseif (($frame_data['frameid'] == 'USER') && (LanguageLookup($frame_data['additionaldata'], true) == '')) {
|
|
$error .= 'Language must be specified as additional data for Frame Identifier of '.$frame_data['frameid'].' in '.$frame_name.'<BR>';
|
|
} elseif (($frame_data['frameid'] == 'PRIV') && ($frame_data['additionaldata'] == '')) {
|
|
$error .= 'Owner Identifier must be specified as additional data for Frame Identifier of '.$frame_data['frameid'].' in '.$frame_name.'<BR>';
|
|
} elseif ((($frame_data['frameid'] == 'COMM') || ($frame_data['frameid'] == 'SYLT') || ($frame_data['frameid'] == 'USLT')) && ((LanguageLookup(substr($frame_data['additionaldata'], 0, 3), true) == '') || (substr($frame_data['additionaldata'], 3) == ''))) {
|
|
$error .= 'Language followed by Content Descriptor must be specified as additional data for Frame Identifier of '.$frame_data['frameid'].' in '.$frame_name.'<BR>';
|
|
} else {
|
|
$framedata .= $frame_data['frameid'];
|
|
$framedata .= str_replace(chr(0), '', $frame_data['url']).chr(0);
|
|
switch ($frame_data['frameid']) {
|
|
case 'COMM':
|
|
case 'SYLT':
|
|
case 'USLT':
|
|
case 'PRIV':
|
|
case 'USER':
|
|
case 'AENC':
|
|
case 'APIC':
|
|
case 'GEOB':
|
|
case 'TXXX':
|
|
$framedata .= $frame_data['additionaldata'];
|
|
break;
|
|
case 'ASPI':
|
|
case 'ETCO':
|
|
case 'EQU2':
|
|
case 'MCID':
|
|
case 'MLLT':
|
|
case 'OWNE':
|
|
case 'RVA2':
|
|
case 'RVRB':
|
|
case 'SYTC':
|
|
case 'IPLS':
|
|
case 'RVAD':
|
|
case 'EQUA':
|
|
// no additional data required
|
|
break;
|
|
case 'RBUF':
|
|
if ($majorversion == 3) {
|
|
// no additional data required
|
|
} else {
|
|
$error .= $frame_data['frameid'].' is not a valid Frame Identifier in '.$frame_name.' (in ID3v2.'.$majorversion.')<BR>';
|
|
}
|
|
|
|
default:
|
|
if ((substr($frame_data['frameid'], 0, 1) == 'T') || (substr($frame_data['frameid'], 0, 1) == 'W')) {
|
|
// no additional data required
|
|
} else {
|
|
$error .= $frame_data['frameid'].' is not a valid Frame Identifier in '.$frame_name.' (in ID3v2.'.$majorversion.')<BR>';
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 'POSS':
|
|
// 4.21 POSS Position synchronisation frame (ID3v2.3+ only)
|
|
// Time stamp format $xx
|
|
// Position $xx (xx ...)
|
|
if (($frame_data['timestampformat'] < 1) || ($frame_data['timestampformat'] > 2)) {
|
|
$error .= 'Invalid Time Stamp Format in '.$frame_name.' ('.$frame_data['timestampformat'].') (valid = 1 or 2)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['position'], 32, false)) {
|
|
$error .= 'Invalid Position in '.$frame_name.' ('.$frame_data['position'].') (range = 0 to 4294967295)<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['timestampformat']);
|
|
$framedata .= BigEndian2String($frame_data['position'], 4, false);
|
|
}
|
|
break;
|
|
case 'USER':
|
|
// 4.22 USER Terms of use (ID3v2.3+ only)
|
|
// Text encoding $xx
|
|
// Language $xx xx xx
|
|
// The actual text <text string according to encoding>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].')<BR>';
|
|
} elseif (LanguageLookup($frame_data['language'], true) == '') {
|
|
$error .= 'Invalid Language in '.$frame_name.' ('.$frame_data['language'].')<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
$framedata .= strtolower($frame_data['language']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'OWNE':
|
|
// 4.23 OWNE Ownership frame (ID3v2.3+ only)
|
|
// Text encoding $xx
|
|
// Price paid <text string> $00
|
|
// Date of purch. <text string>
|
|
// Seller <text string according to encoding>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].')<BR>';
|
|
} elseif (!IsANumber($frame_data['pricepaid']['value'], false)) {
|
|
$error .= 'Invalid Price Paid in '.$frame_name.' ('.$frame_data['pricepaid']['value'].')<BR>';
|
|
} elseif (!IsValidDateStampString($frame_data['purchasedate'])) {
|
|
$error .= 'Invalid Date Of Purchase in '.$frame_name.' ('.$frame_data['purchasedate'].') (format = YYYYMMDD)<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
$framedata .= str_replace(chr(0), '', $frame_data['pricepaid']['value']).chr(0);
|
|
$framedata .= $frame_data['purchasedate'];
|
|
$framedata .= $frame_data['seller'];
|
|
}
|
|
break;
|
|
case 'COMR':
|
|
// 4.24 COMR Commercial frame (ID3v2.3+ only)
|
|
// Text encoding $xx
|
|
// Price string <text string> $00
|
|
// Valid until <text string>
|
|
// Contact URL <text string> $00
|
|
// Received as $xx
|
|
// Name of seller <text string according to encoding> $00 (00)
|
|
// Description <text string according to encoding> $00 (00)
|
|
// Picture MIME type <string> $00
|
|
// Seller logo <binary data>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].')<BR>';
|
|
} elseif (!IsValidDateStampString($frame_data['pricevaliduntil'])) {
|
|
$error .= 'Invalid Valid Until date in '.$frame_name.' ('.$frame_data['pricevaliduntil'].') (format = YYYYMMDD)<BR>';
|
|
} elseif (!IsValidURL($frame_data['contacturl'], false, true)) {
|
|
$error .= 'Invalid Contact URL in '.$frame_name.' ('.$frame_data['contacturl'].') (allowed schemes: http, https, ftp, mailto)<BR>';
|
|
} elseif (!IsValidCOMRreceivedas($frame_data['receivedasid'], $majorversion)) {
|
|
$error .= 'Invalid Received As byte in '.$frame_name.' ('.$frame_data['contacturl'].') (range = 0 to 8)<BR>';
|
|
} elseif (!IsValidMIMEstring($frame_data['mime'])) {
|
|
$error .= 'Invalid MIME Type in '.$frame_name.' ('.$frame_data['mime'].')<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
unset($pricestring);
|
|
foreach ($frame_data['price'] as $key => $val) {
|
|
if (IsValidPriceString($key.$val['value'])) {
|
|
$pricestrings[] = $key.$val['value'];
|
|
} else {
|
|
$error .= 'Invalid Price String in '.$frame_name.' ('.$key.$val['value'].')<BR>';
|
|
}
|
|
}
|
|
$framedata .= implode('/', $pricestrings);
|
|
$framedata .= $frame_data['pricevaliduntil'];
|
|
$framedata .= str_replace(chr(0), '', $frame_data['contacturl']).chr(0);
|
|
$framedata .= chr($frame_data['receivedasid']);
|
|
$framedata .= $frame_data['sellername'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['description'].TextEncodingLookup('terminator', $frame_data['encodingid']);
|
|
$framedata .= $frame_data['mime'].chr(0);
|
|
$framedata .= $frame_data['logo'];
|
|
}
|
|
break;
|
|
case 'ENCR':
|
|
// 4.25 ENCR Encryption method registration (ID3v2.3+ only)
|
|
// Owner identifier <text string> $00
|
|
// Method symbol $xx
|
|
// Encryption data <binary data>
|
|
if (!IsWithinBitRange($frame_data['methodsymbol'], 8, false)) {
|
|
$error .= 'Invalid Group Symbol in '.$frame_name.' ('.$frame_data['methodsymbol'].') (range = 0 to 255)<BR>';
|
|
} else {
|
|
$framedata .= str_replace(chr(0), '', $frame_data['ownerid']).chr(0);
|
|
$framedata .= ord($frame_data['methodsymbol']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'GRID':
|
|
// 4.26 GRID Group identification registration (ID3v2.3+ only)
|
|
// Owner identifier <text string> $00
|
|
// Group symbol $xx
|
|
// Group dependent data <binary data>
|
|
if (!IsWithinBitRange($frame_data['groupsymbol'], 8, false)) {
|
|
$error .= 'Invalid Group Symbol in '.$frame_name.' ('.$frame_data['groupsymbol'].') (range = 0 to 255)<BR>';
|
|
} else {
|
|
$framedata .= str_replace(chr(0), '', $frame_data['ownerid']).chr(0);
|
|
$framedata .= ord($frame_data['groupsymbol']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'PRIV':
|
|
// 4.27 PRIV Private frame (ID3v2.3+ only)
|
|
// Owner identifier <text string> $00
|
|
// The private data <binary data>
|
|
$framedata .= str_replace(chr(0), '', $frame_data['ownerid']).chr(0);
|
|
$framedata .= $frame_data['data'];
|
|
break;
|
|
case 'SIGN':
|
|
// 4.28 SIGN Signature frame (ID3v2.4+ only)
|
|
// Group symbol $xx
|
|
// Signature <binary data>
|
|
if (!IsWithinBitRange($frame_data['groupsymbol'], 8, false)) {
|
|
$error .= 'Invalid Group Symbol in '.$frame_name.' ('.$frame_data['groupsymbol'].') (range = 0 to 255)<BR>';
|
|
} else {
|
|
$framedata .= ord($frame_data['groupsymbol']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
break;
|
|
case 'SEEK':
|
|
// 4.29 SEEK Seek frame (ID3v2.4+ only)
|
|
// Minimum offset to next tag $xx xx xx xx
|
|
if (!IsWithinBitRange($frame_data['data'], 32, false)) {
|
|
$error .= 'Invalid Minimum Offset in '.$frame_name.' ('.$frame_data['data'].') (range = 0 to 4294967295)<BR>';
|
|
} else {
|
|
$framedata .= BigEndian2String($frame_data['data'], 4, false);
|
|
}
|
|
break;
|
|
case 'ASPI':
|
|
// 4.30 ASPI Audio seek point index (ID3v2.4+ only)
|
|
// Indexed data start (S) $xx xx xx xx
|
|
// Indexed data length (L) $xx xx xx xx
|
|
// Number of index points (N) $xx xx
|
|
// Bits per index point (b) $xx
|
|
// Then for every index point the following data is included:
|
|
// Fraction at index (Fi) $xx (xx)
|
|
if (!IsWithinBitRange($frame_data['datastart'], 32, false)) {
|
|
$error .= 'Invalid Indexed Data Start in '.$frame_name.' ('.$frame_data['datastart'].') (range = 0 to 4294967295)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['datalength'], 32, false)) {
|
|
$error .= 'Invalid Indexed Data Length in '.$frame_name.' ('.$frame_data['datalength'].') (range = 0 to 4294967295)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['indexpoints'], 16, false)) {
|
|
$error .= 'Invalid Number Of Index Points in '.$frame_name.' ('.$frame_data['indexpoints'].') (range = 0 to 65535)<BR>';
|
|
} elseif (!IsWithinBitRange($frame_data['bitsperpoint'], 8, false)) {
|
|
$error .= 'Invalid Bits Per Index Point in '.$frame_name.' ('.$frame_data['bitsperpoint'].') (range = 0 to 255)<BR>';
|
|
} elseif ($frame_data['indexpoints'] != count($frame_data['indexes'])) {
|
|
$error .= 'Number Of Index Points does not match actual supplied data in '.$frame_name.'<BR>';
|
|
} else {
|
|
$framedata .= BigEndian2String($frame_data['datastart'], 4, false);
|
|
$framedata .= BigEndian2String($frame_data['datalength'], 4, false);
|
|
$framedata .= BigEndian2String($frame_data['indexpoints'], 2, false);
|
|
$framedata .= BigEndian2String($frame_data['bitsperpoint'], 1, false);
|
|
foreach ($frame_data['indexes'] as $key => $val) {
|
|
$framedata .= BigEndian2String($val, ceil($frame_data['bitsperpoint'] / 8), false);
|
|
}
|
|
}
|
|
break;
|
|
case 'RGAD':
|
|
// RGAD Replay Gain Adjustment
|
|
// http://privatewww.essex.ac.uk/~djmrob/replaygain/
|
|
// Peak Amplitude $xx $xx $xx $xx
|
|
// Radio Replay Gain Adjustment %aaabbbcd %dddddddd
|
|
// Audiophile Replay Gain Adjustment %aaabbbcd %dddddddd
|
|
// a - name code
|
|
// b - originator code
|
|
// c - sign bit
|
|
// d - replay gain adjustment
|
|
|
|
if (($frame_data['radio_adjustment'] > 51) || ($frame_data['radio_adjustment'] < -51)) {
|
|
$error .= 'Invalid Radio Adjustment in '.$frame_name.' ('.$frame_data['radio_adjustment'].') (range = -51.0 to +51.0)<BR>';
|
|
} elseif (($frame_data['audiophile_adjustment'] > 51) || ($frame_data['audiophile_adjustment'] < -51)) {
|
|
$error .= 'Invalid Audiophile Adjustment in '.$frame_name.' ('.$frame_data['audiophile_adjustment'].') (range = -51.0 to +51.0)<BR>';
|
|
} elseif (!IsValidRGADname($frame_data['raw']['radio_name'], $majorversion)) {
|
|
$error .= 'Invalid Radio Name Code in '.$frame_name.' ('.$frame_data['raw']['radio_name'].') (range = 0 to 2)<BR>';
|
|
} elseif (!IsValidRGADname($frame_data['raw']['audiophile_name'], $majorversion)) {
|
|
$error .= 'Invalid Audiophile Name Code in '.$frame_name.' ('.$frame_data['raw']['audiophile_name'].') (range = 0 to 2)<BR>';
|
|
} elseif (!IsValidRGADoriginator($frame_data['raw']['radio_originator'], $majorversion)) {
|
|
$error .= 'Invalid Radio Originator Code in '.$frame_name.' ('.$frame_data['raw']['radio_originator'].') (range = 0 to 3)<BR>';
|
|
} elseif (!IsValidRGADoriginator($frame_data['raw']['audiophile_originator'], $majorversion)) {
|
|
$error .= 'Invalid Audiophile Originator Code in '.$frame_name.' ('.$frame_data['raw']['audiophile_originator'].') (range = 0 to 3)<BR>';
|
|
} else {
|
|
$framedata .= Float2String($frame_data['peakamplitude'], 32);
|
|
$framedata .= RGADgainString($frame_data['raw']['radio_name'], $frame_data['raw']['radio_originator'], $frame_data['radio_adjustment']);
|
|
$framedata .= RGADgainString($frame_data['raw']['audiophile_name'], $frame_data['raw']['audiophile_originator'], $frame_data['audiophile_adjustment']);
|
|
}
|
|
break;
|
|
default:
|
|
if ($frame_name{0} == 'T') {
|
|
// 4.2. T??? Text information frames
|
|
// Text encoding $xx
|
|
// Information <text string(s) according to encoding>
|
|
if (!IsValidTextEncoding($frame_data['encodingid'], $majorversion)) {
|
|
$error .= 'Invalid Text Encoding in '.$frame_name.' ('.$frame_data['encodingid'].') for ID3v2.'.$majorversion.'<BR>';
|
|
} else {
|
|
$framedata .= chr($frame_data['encodingid']);
|
|
$framedata .= $frame_data['data'];
|
|
}
|
|
} elseif ($frame_name{0} == 'W') {
|
|
// 4.3. W??? URL link frames
|
|
// URL <text string>
|
|
if (!IsValidURL($frame_data['url'], false, false)) {
|
|
$error .= 'Invalid URL in '.$frame_name.' ('.$frame_data['url'].')<BR>';
|
|
} else {
|
|
$framedata .= $frame_data['url'];
|
|
}
|
|
} else {
|
|
$error .= $frame_name.' not yet supported in putid3.php<BR>';
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ($error) {
|
|
if ($showerrors) {
|
|
echo $error;
|
|
}
|
|
return false;
|
|
} else {
|
|
return $framedata;
|
|
}
|
|
}
|
|
|
|
function ID3v2FrameIsAllowed($frame_name, $frame_data, $majorversion, $showerrors=false) {
|
|
static $PreviousFrames = array();
|
|
$error = '';
|
|
|
|
if ($frame_name === null) {
|
|
// if the writing functions are called multiple times, the static array needs to be
|
|
// cleared - this can be done by calling ID3v2FrameIsAllowed(null, '', '')
|
|
$PreviousFrames = array();
|
|
return true;
|
|
}
|
|
|
|
if ($majorversion == 4) {
|
|
switch ($frame_name) {
|
|
case 'UFID':
|
|
case 'AENC':
|
|
case 'ENCR':
|
|
case 'GRID':
|
|
if (!isset($frame_data['ownerid'])) {
|
|
$error .= '[ownerid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['ownerid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same OwnerID ('.$frame_data['ownerid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['ownerid'];
|
|
}
|
|
break;
|
|
case 'TXXX':
|
|
case 'WXXX':
|
|
case 'RVA2':
|
|
case 'EQU2':
|
|
case 'APIC':
|
|
case 'GEOB':
|
|
if (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Description ('.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'USER':
|
|
if (!isset($frame_data['language'])) {
|
|
$error .= '[language] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['language'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Language ('.$frame_data['language'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['language'];
|
|
}
|
|
break;
|
|
case 'USLT':
|
|
case 'SYLT':
|
|
case 'COMM':
|
|
if (!isset($frame_data['language'])) {
|
|
$error .= '[language] not specified for '.$frame_name.'<BR>';
|
|
} elseif (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['language'].$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Language + Description ('.$frame_data['language'].' + '.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['language'].$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'POPM':
|
|
if (!isset($frame_data['email'])) {
|
|
$error .= '[email] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['email'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Email ('.$frame_data['email'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['email'];
|
|
}
|
|
break;
|
|
case 'IPLS':
|
|
case 'MCDI':
|
|
case 'ETCO':
|
|
case 'MLLT':
|
|
case 'SYTC':
|
|
case 'RVRB':
|
|
case 'PCNT':
|
|
case 'RBUF':
|
|
case 'POSS':
|
|
case 'OWNE':
|
|
case 'SEEK':
|
|
case 'ASPI':
|
|
case 'RGAD':
|
|
if (in_array($frame_name, $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name;
|
|
}
|
|
break;
|
|
case 'LINK':
|
|
// this isn't implemented quite right (yet) - it should check the target frame data for compliance
|
|
// but right now it just allows one linked frame of each type, to be safe.
|
|
if (!isset($frame_data['frameid'])) {
|
|
$error .= '[frameid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['frameid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same FrameID ('.$frame_data['frameid'].')<BR>';
|
|
} elseif (in_array($frame_data['frameid'], $PreviousFrames)) {
|
|
// no links to singleton tags
|
|
$error .= 'Cannot specify a '.$frame_name.' tag to a singleton tag that already exists ('.$frame_data['frameid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['frameid']; // only one linked tag of this type
|
|
$PreviousFrames[] = $frame_data['frameid']; // no non-linked singleton tags of this type
|
|
}
|
|
break;
|
|
case 'COMR':
|
|
// There may be more than one 'commercial frame' in a tag, but no two may be identical
|
|
// Checking isn't implemented at all (yet) - just assumes that it's OK.
|
|
break;
|
|
case 'PRIV':
|
|
case 'SIGN':
|
|
if (!isset($frame_data['ownerid'])) {
|
|
$error .= '[ownerid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (!isset($frame_data['data'])) {
|
|
$error .= '[data] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['ownerid'].$frame_data['data'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same OwnerID + Data ('.$frame_data['ownerid'].' + '.$frame_data['data'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['ownerid'].$frame_data['data'];
|
|
}
|
|
break;
|
|
default:
|
|
if (($frame_name{0} != 'T') && ($frame_name{0} != 'W')) {
|
|
$error .= 'Frame not allowed in ID3v2.'.$majorversion.': '.$frame_name.'<BR>';
|
|
}
|
|
break;
|
|
}
|
|
} elseif ($majorversion == 3) {
|
|
switch ($frame_name) {
|
|
case 'UFID':
|
|
case 'AENC':
|
|
case 'ENCR':
|
|
case 'GRID':
|
|
if (!isset($frame_data['ownerid'])) {
|
|
$error .= '[ownerid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['ownerid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same OwnerID ('.$frame_data['ownerid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['ownerid'];
|
|
}
|
|
break;
|
|
case 'TXXX':
|
|
case 'WXXX':
|
|
case 'APIC':
|
|
case 'GEOB':
|
|
if (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Description ('.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'USER':
|
|
if (!isset($frame_data['language'])) {
|
|
$error .= '[language] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['language'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Language ('.$frame_data['language'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['language'];
|
|
}
|
|
break;
|
|
case 'USLT':
|
|
case 'SYLT':
|
|
case 'COMM':
|
|
if (!isset($frame_data['language'])) {
|
|
$error .= '[language] not specified for '.$frame_name.'<BR>';
|
|
} elseif (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['language'].$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Language + Description ('.$frame_data['language'].' + '.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['language'].$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'POPM':
|
|
if (!isset($frame_data['email'])) {
|
|
$error .= '[email] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['email'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Email ('.$frame_data['email'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['email'];
|
|
}
|
|
break;
|
|
case 'IPLS':
|
|
case 'MCDI':
|
|
case 'ETCO':
|
|
case 'MLLT':
|
|
case 'SYTC':
|
|
case 'RVAD':
|
|
case 'EQUA':
|
|
case 'RVRB':
|
|
case 'PCNT':
|
|
case 'RBUF':
|
|
case 'POSS':
|
|
case 'OWNE':
|
|
case 'RGAD':
|
|
if (in_array($frame_name, $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name;
|
|
}
|
|
break;
|
|
case 'LINK':
|
|
// this isn't implemented quite right (yet) - it should check the target frame data for compliance
|
|
// but right now it just allows one linked frame of each type, to be safe.
|
|
if (!isset($frame_data['frameid'])) {
|
|
$error .= '[frameid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['frameid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same FrameID ('.$frame_data['frameid'].')<BR>';
|
|
} elseif (in_array($frame_data['frameid'], $PreviousFrames)) {
|
|
// no links to singleton tags
|
|
$error .= 'Cannot specify a '.$frame_name.' tag to a singleton tag that already exists ('.$frame_data['frameid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['frameid']; // only one linked tag of this type
|
|
$PreviousFrames[] = $frame_data['frameid']; // no non-linked singleton tags of this type
|
|
}
|
|
break;
|
|
case 'COMR':
|
|
// There may be more than one 'commercial frame' in a tag, but no two may be identical
|
|
// Checking isn't implemented at all (yet) - just assumes that it's OK.
|
|
break;
|
|
case 'PRIV':
|
|
if (!isset($frame_data['ownerid'])) {
|
|
$error .= '[ownerid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (!isset($frame_data['data'])) {
|
|
$error .= '[data] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['ownerid'].$frame_data['data'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same OwnerID + Data ('.$frame_data['ownerid'].' + '.$frame_data['data'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['ownerid'].$frame_data['data'];
|
|
}
|
|
break;
|
|
default:
|
|
if (($frame_name{0} != 'T') && ($frame_name{0} != 'W')) {
|
|
$error .= 'Frame not allowed in ID3v2.'.$majorversion.': '.$frame_name.'<BR>';
|
|
}
|
|
break;
|
|
}
|
|
} elseif ($majorversion == 2) {
|
|
switch ($frame_name) {
|
|
case 'UFI':
|
|
case 'CRM':
|
|
case 'CRA':
|
|
if (!isset($frame_data['ownerid'])) {
|
|
$error .= '[ownerid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['ownerid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same OwnerID ('.$frame_data['ownerid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['ownerid'];
|
|
}
|
|
break;
|
|
case 'TXX':
|
|
case 'WXX':
|
|
case 'PIC':
|
|
case 'GEO':
|
|
if (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Description ('.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'ULT':
|
|
case 'SLT':
|
|
case 'COM':
|
|
if (!isset($frame_data['language'])) {
|
|
$error .= '[language] not specified for '.$frame_name.'<BR>';
|
|
} elseif (!isset($frame_data['description'])) {
|
|
$error .= '[description] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['language'].$frame_data['description'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Language + Description ('.$frame_data['language'].' + '.$frame_data['description'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['language'].$frame_data['description'];
|
|
}
|
|
break;
|
|
case 'POP':
|
|
if (!isset($frame_data['email'])) {
|
|
$error .= '[email] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['email'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same Email ('.$frame_data['email'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['email'];
|
|
}
|
|
break;
|
|
case 'IPL':
|
|
case 'MCI':
|
|
case 'ETC':
|
|
case 'MLL':
|
|
case 'STC':
|
|
case 'RVA':
|
|
case 'EQU':
|
|
case 'REV':
|
|
case 'CNT':
|
|
case 'BUF':
|
|
if (in_array($frame_name, $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name;
|
|
}
|
|
break;
|
|
case 'LNK':
|
|
// this isn't implemented quite right (yet) - it should check the target frame data for compliance
|
|
// but right now it just allows one linked frame of each type, to be safe.
|
|
if (!isset($frame_data['frameid'])) {
|
|
$error .= '[frameid] not specified for '.$frame_name.'<BR>';
|
|
} elseif (in_array($frame_name.$frame_data['frameid'], $PreviousFrames)) {
|
|
$error .= 'Only one '.$frame_name.' tag allowed with the same FrameID ('.$frame_data['frameid'].')<BR>';
|
|
} elseif (in_array($frame_data['frameid'], $PreviousFrames)) {
|
|
// no links to singleton tags
|
|
$error .= 'Cannot specify a '.$frame_name.' tag to a singleton tag that already exists ('.$frame_data['frameid'].')<BR>';
|
|
} else {
|
|
$PreviousFrames[] = $frame_name.$frame_data['frameid']; // only one linked tag of this type
|
|
$PreviousFrames[] = $frame_data['frameid']; // no non-linked singleton tags of this type
|
|
}
|
|
break;
|
|
default:
|
|
if (($frame_name{0} != 'T') && ($frame_name{0} != 'W')) {
|
|
$error .= 'Frame not allowed in ID3v2.'.$majorversion.': '.$frame_name.'<BR>';
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($error) {
|
|
if ($showerrors) {
|
|
echo $error;
|
|
}
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
function GenerateID3v2Tag($data, $majorversion=4, $minorversion=0, $paddedlength=0, $extendedheader='', $footer=false, $showerrors=true, $noerrorsonly=true) {
|
|
ID3v2FrameIsAllowed(null, '', ''); // clear static array in case this isn't the first call to GenerateID3v2Tag()
|
|
|
|
$tagstring = '';
|
|
if (is_array($data)) {
|
|
if (is_array($extendedheader)) {
|
|
// not supported yet
|
|
}
|
|
foreach ($data as $frame_name => $frame_rawinputdata) {
|
|
if (!is_array($frame_rawinputdata) || !isset($frame_rawinputdata[0]) || !is_array($frame_rawinputdata[0])) {
|
|
// force everything to be arrayed so only one processing loop
|
|
$frame_rawinputdata = array($frame_rawinputdata);
|
|
}
|
|
foreach ($frame_rawinputdata as $irrelevantindex => $frame_inputdata) {
|
|
if (IsValidID3v2FrameName($frame_name, $majorversion)) {
|
|
unset($frame_length);
|
|
unset($frame_flags);
|
|
$frame_data = false;
|
|
if (ID3v2FrameIsAllowed($frame_name, $frame_inputdata, $majorversion, $showerrors)) {
|
|
if ($frame_data = GenerateID3v2FrameData($frame_name, $frame_inputdata, $majorversion, $showerrors)) {
|
|
$FrameUnsynchronisation = false;
|
|
if ($majorversion >= 4) {
|
|
// frame-level unsynchronization
|
|
$unsynchdata = Unsynchronise($frame_data);
|
|
if (strlen($unsynchdata) != strlen($frame_data)) {
|
|
// unsynchronization needed
|
|
$FrameUnsynchronisation = true;
|
|
$frame_data = $unsynchdata;
|
|
if (isset($TagUnsynchronisation) && $TagUnsynchronisation === false) {
|
|
// only set to true if ALL frames are unsynchronised
|
|
} else {
|
|
$TagUnsynchronisation = true;
|
|
}
|
|
} else {
|
|
if (isset($TagUnsynchronisation)) {
|
|
$TagUnsynchronisation = false;
|
|
}
|
|
}
|
|
unset($unsynchdata);
|
|
|
|
$frame_length = BigEndian2String(strlen($frame_data), 4, true);
|
|
} else {
|
|
$frame_length = BigEndian2String(strlen($frame_data), 4, false);
|
|
}
|
|
$frame_flags = GenerateID3v2FrameFlags($majorversion, ID3v2FrameFlagsLookupTagAlter($frame_name, $majorversion), ID3v2FrameFlagsLookupFileAlter($frame_name, $majorversion), false, false, false, false, $FrameUnsynchronisation, false);
|
|
}
|
|
} else {
|
|
if ($showerrors) {
|
|
echo 'Frame "'.$frame_name.'" is NOT allowed<BR>';
|
|
}
|
|
}
|
|
if ($frame_data === false) {
|
|
if ($showerrors) {
|
|
echo 'GenerateID3v2FrameData() failed for "'.$frame_name.'"<BR>';
|
|
echo 'Error generated in getID3() v'.GETID3VERSION.'<BR>';
|
|
}
|
|
if ($noerrorsonly) {
|
|
return false;
|
|
} else {
|
|
unset($frame_name);
|
|
}
|
|
}
|
|
} else {
|
|
// ignore any invalid frame names, including 'title', 'header', etc
|
|
unset($frame_name);
|
|
unset($frame_length);
|
|
unset($frame_flags);
|
|
unset($frame_data);
|
|
}
|
|
if (isset($frame_name) && isset($frame_length) && isset($frame_flags) && isset($frame_data)) {
|
|
$tagstring .= $frame_name.$frame_length.$frame_flags.$frame_data;
|
|
}
|
|
}
|
|
}
|
|
if ($footer) {
|
|
if ($showerrors) {
|
|
echo 'Footer not supported (yet)<BR>';
|
|
}
|
|
return false;
|
|
}
|
|
//echo number_format(strlen($tagstring));
|
|
if (!isset($TagUnsynchronisation)) {
|
|
$TagUnsynchronisation = true;
|
|
}
|
|
if ($majorversion <= 3) {
|
|
// tag-level unsynchronization
|
|
$unsynchdata = Unsynchronise($tagstring);
|
|
if (strlen($unsynchdata) != strlen($tagstring)) {
|
|
// unsynchronization needed
|
|
$TagUnsynchronisation = true;
|
|
$tagstring = $unsynchdata;
|
|
}
|
|
}
|
|
//echo ' - '.number_format(strlen($tagstring)).'<BR>';
|
|
if (!$footer && ($paddedlength > (strlen($tagstring) + ID3v2HeaderLength($majorversion)))) {
|
|
// pad up to $paddedlength bytes if unpadded tag is shorter than $paddedlength
|
|
// "Furthermore it MUST NOT have any padding when a tag footer is added to the tag."
|
|
$tagstring .= @str_repeat(chr(0), $paddedlength - strlen($tagstring));
|
|
}
|
|
if (substr($tagstring, strlen($tagstring) - 1, 1) == chr(255)) {
|
|
// special unsynchronization case:
|
|
// if last byte == $FF then appended a $00
|
|
$TagUnsynchronisation = true;
|
|
$tagstring .= chr(0);
|
|
}
|
|
|
|
$tagheader = 'ID3';
|
|
$tagheader .= chr($majorversion);
|
|
$tagheader .= chr($minorversion);
|
|
$tagheader .= GenerateID3v2TagFlags($majorversion, $TagUnsynchronisation, false, (bool) $extendedheader, false, $footer);
|
|
$tagheader .= BigEndian2String(strlen($tagstring), 4, true);
|
|
|
|
return $tagheader.$tagstring;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function WriteID3v2($filename, $data, $majorversion=4, $minorversion=0, $overwrite=false, $paddedlength=0, $showerrors=false) {
|
|
// File MUST be writeable - CHMOD(646) at least. It's best if the
|
|
// directory is also writeable, because that method is both faster and less susceptible to errors.
|
|
if (is_writeable($filename) || (!file_exists($filename) && is_writeable(dirname($filename)))) {
|
|
$error = '';
|
|
$OldThisfileInfo = GetAllFileInfo($filename);
|
|
if ($overwrite) {
|
|
// ignore previous data
|
|
} else {
|
|
// merge with existing data
|
|
$data = array_join_merge($OldThisfileInfo, $data);
|
|
$paddedlength = max($OldThisfileInfo['id3v2']['headerlength'], $paddedlength);
|
|
}
|
|
if ($NewID3v2Tag = GenerateID3v2Tag($data['id3v2'], $majorversion, $minorversion, $paddedlength, '', false, $showerrors, true)) {
|
|
if ((!file_exists($filename) && is_writeable(dirname($filename))) || (is_writeable($filename) && isset($OldThisfileInfo['id3v2']['headerlength']) && ($OldThisfileInfo['id3v2']['headerlength'] == strlen($NewID3v2Tag)))) {
|
|
// best and fastest method - insert-overwrite existing tag (padded to length of old tag if neccesary)
|
|
if (file_exists($filename)) {
|
|
|
|
ob_start();
|
|
if ($fp = fopen($filename, 'r+b')) {
|
|
rewind($fp);
|
|
fwrite($fp, $NewID3v2Tag, strlen($NewID3v2Tag));
|
|
fclose($fp);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "r+b" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
}
|
|
ob_end_clean();
|
|
|
|
} else {
|
|
|
|
ob_start();
|
|
if ($fp = fopen($filename, 'wb')) {
|
|
rewind($fp);
|
|
fwrite($fp, $NewID3v2Tag, strlen($NewID3v2Tag));
|
|
fclose($fp);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "wb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
}
|
|
ob_end_clean();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// new tag is longer than old tag - must rewrite entire file
|
|
if (is_writeable(dirname($filename))) {
|
|
// preferred alternate method - only one copying operation, minimal chance of corrupting
|
|
// original file if script is interrupted, but required directory to be writeable
|
|
ob_start();
|
|
if ($fp_source = fopen($filename, 'rb')) {
|
|
|
|
if ($OldThisfileInfo['audiobytes'] > 0) {
|
|
|
|
rewind($fp_source);
|
|
if ($OldThisfileInfo['avdataoffset'] !== false) {
|
|
fseek($fp_source, $OldThisfileInfo['avdataoffset'], SEEK_SET);
|
|
}
|
|
ob_start();
|
|
if ($fp_temp = fopen($filename.'getid3tmp', 'wb')) {
|
|
fwrite($fp_temp, $NewID3v2Tag, strlen($NewID3v2Tag));
|
|
// while (($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_temp, $buffer, strlen($buffer));
|
|
}
|
|
fclose($fp_temp);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.'getid3tmp mode "wb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
}
|
|
ob_end_clean();
|
|
fclose($fp_source);
|
|
|
|
} else { // no previous audiodata
|
|
|
|
ob_start();
|
|
if ($fp_temp = fopen($filename.'getid3tmp', 'wb')) {
|
|
fwrite($fp_temp, $NewID3v2Tag, strlen($NewID3v2Tag));
|
|
fclose($fp_temp);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.'getid3tmp mode "wb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
}
|
|
ob_end_clean();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
$error .= 'Could not open '.$filename.' mode "rb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
|
|
}
|
|
ob_end_clean();
|
|
if (!$error) {
|
|
if (file_exists($filename)) {
|
|
unlink($filename);
|
|
}
|
|
rename($filename.'getid3tmp', $filename);
|
|
}
|
|
|
|
} else { // !is_writeable(dirname($filename))
|
|
|
|
// less desirable alternate method - double-copies the file, overwrites original file
|
|
// and could corrupt source file if the script is interrupted or an error occurs.
|
|
ob_start();
|
|
if ($fp_source = fopen($filename, 'rb')) {
|
|
|
|
rewind($fp_source);
|
|
if ($OldThisfileInfo['avdataoffset'] !== false) {
|
|
fseek($fp_source, $OldThisfileInfo['avdataoffset'], SEEK_SET);
|
|
}
|
|
if ($fp_temp = tmpfile()) {
|
|
|
|
fwrite($fp_temp, $NewID3v2Tag, strlen($NewID3v2Tag));
|
|
// while (($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_temp, $buffer, strlen($buffer));
|
|
}
|
|
fclose($fp_source);
|
|
ob_start();
|
|
if ($fp_source = @fopen($filename, 'wb')) {
|
|
|
|
rewind($fp_temp);
|
|
// while (($buffer = fread($fp_temp, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_temp, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_source, $buffer, strlen($buffer));
|
|
}
|
|
fseek($fp_temp, -128, SEEK_END);
|
|
fclose($fp_source);
|
|
|
|
} else {
|
|
|
|
$error .= 'Could not open '.$filename.' mode "wb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
|
|
}
|
|
ob_end_clean();
|
|
fclose($fp_temp);
|
|
|
|
} else {
|
|
|
|
$error .= 'Could not create tmpfile()<BR>';
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
$error .= 'Could not open '.$filename.' mode "rb" - '.strip_tags(ob_get_contents()).'<BR>';
|
|
|
|
}
|
|
ob_end_clean();
|
|
}
|
|
}
|
|
} else {
|
|
$error .= 'GenerateID3v2Tag() failed<BR>';
|
|
}
|
|
|
|
if ($error) {
|
|
if ($showerrors) {
|
|
echo $error;
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function RemoveID3v2($filename, $showerrors=false) {
|
|
// File MUST be writeable - CHMOD(646) at least. It's best if the
|
|
// directory is also writeable, because that method is both faster and less susceptible to errors.
|
|
if (is_writeable(dirname($filename))) {
|
|
// preferred method - only one copying operation, minimal chance of corrupting
|
|
// original file if script is interrupted, but required directory to be writeable
|
|
if ($fp_source = @fopen($filename, 'rb')) {
|
|
$OldThisfileInfo = GetAllFileInfo($filename);
|
|
rewind($fp_source);
|
|
if ($OldThisfileInfo['avdataoffset'] !== false) {
|
|
fseek($fp_source, $OldThisfileInfo['avdataoffset'], SEEK_SET);
|
|
}
|
|
if ($fp_temp = @fopen($filename.'getid3tmp', 'w+b')) {
|
|
// while (($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_temp, $buffer, strlen($buffer));
|
|
}
|
|
fclose($fp_temp);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.'getid3tmp mode "w+b"<BR>';
|
|
}
|
|
fclose($fp_source);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "rb"<BR>';
|
|
}
|
|
if (file_exists($filename)) {
|
|
unlink($filename);
|
|
}
|
|
rename($filename.'getid3tmp', $filename);
|
|
} elseif (is_writable($filename)) {
|
|
// less desirable alternate method - double-copies the file, overwrites original file
|
|
// and could corrupt source file if the script is interrupted or an error occurs.
|
|
if ($fp_source = @fopen($filename, 'rb')) {
|
|
$OldThisfileInfo = GetAllFileInfo($filename);
|
|
rewind($fp_source);
|
|
if ($OldThisfileInfo['avdataoffset'] !== false) {
|
|
fseek($fp_source, $OldThisfileInfo['avdataoffset'], SEEK_SET);
|
|
}
|
|
if ($fp_temp = tmpfile()) {
|
|
// while (($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_source, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_temp, $buffer, strlen($buffer));
|
|
}
|
|
fclose($fp_source);
|
|
if ($fp_source = @fopen($filename, 'wb')) {
|
|
rewind($fp_temp);
|
|
// while (($buffer = fread($fp_temp, FREAD_BUFFER_SIZE)) !== false) {
|
|
while ($buffer = fread($fp_temp, FREAD_BUFFER_SIZE)) {
|
|
fwrite($fp_source, $buffer, strlen($buffer));
|
|
}
|
|
fseek($fp_temp, -128, SEEK_END);
|
|
fclose($fp_source);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "wb"<BR>';
|
|
}
|
|
fclose($fp_temp);
|
|
} else {
|
|
$error .= 'Could not create tmpfile()<BR>';
|
|
}
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "rb"<BR>';
|
|
}
|
|
} else {
|
|
$error .= 'Directory and file both not writeable<BR>';
|
|
}
|
|
if ($error) {
|
|
if ($showerrors) {
|
|
echo $error;
|
|
}
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
|
|
function GenerateID3v1Tag($title, $artist, $album, $year, $genre, $comment, $track) {
|
|
$ID3v1Tag = 'TAG';
|
|
$ID3v1Tag .= str_pad(substr($title, 0, 30), 30, chr(0), STR_PAD_RIGHT);
|
|
$ID3v1Tag .= str_pad(substr($artist, 0, 30), 30, chr(0), STR_PAD_RIGHT);
|
|
$ID3v1Tag .= str_pad(substr($album, 0, 30), 30, chr(0), STR_PAD_RIGHT);
|
|
$ID3v1Tag .= str_pad(substr($year, 0, 4), 4, ' ', STR_PAD_LEFT);
|
|
if (isset($track) && ($track > 0) && ($track <= 255)) {
|
|
$ID3v1Tag .= str_pad(substr($comment, 0, 28), 28, chr(0), STR_PAD_RIGHT);
|
|
$ID3v1Tag .= chr(0);
|
|
if (gettype($track) == 'string') {
|
|
$track = (int) $track;
|
|
}
|
|
$ID3v1Tag .= chr($track);
|
|
} else {
|
|
$ID3v1Tag .= str_pad(substr($comment, 0, 30), 30, chr(0), STR_PAD_RIGHT);
|
|
}
|
|
if (($genre < 0) || ($genre > 147)) {
|
|
$genre = 255; // 'unknown' genre
|
|
}
|
|
if (gettype($genre) == 'string') {
|
|
$genrenumber = (int) $genre;
|
|
$ID3v1Tag .= chr($genrenumber);
|
|
} elseif (gettype($genre) == 'integer') {
|
|
$ID3v1Tag .= chr($genre);
|
|
} else {
|
|
$ID3v1Tag .= chr(255); // 'unknown' genre
|
|
}
|
|
|
|
return $ID3v1Tag;
|
|
}
|
|
|
|
function WriteID3v1($filename, $title='', $artist='', $album='', $year='', $comment='', $genre=255, $track='', $showerrors=false) {
|
|
// File MUST be writeable - CHMOD(646) at least
|
|
if (is_writeable($filename)) {
|
|
$error = '';
|
|
if ($fp_source = @fopen($filename, 'r+b')) {
|
|
fseek($fp_source, -128, SEEK_END);
|
|
if (fread($fp_source, 3) == 'TAG') {
|
|
fseek($fp_source, -128, SEEK_END); // overwrite existing ID3v1 tag
|
|
} else {
|
|
fseek($fp_source, 0, SEEK_END); // append new ID3v1 tag
|
|
}
|
|
fwrite($fp_source, GenerateID3v1Tag($title, $artist, $album, $year, $genre, $comment, $track), 128);
|
|
fclose($fp_source);
|
|
} else {
|
|
if ($showerrors) {
|
|
echo 'Could not open '.$filename.' mode "r+b"<BR>';
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
if ($showerrors) {
|
|
echo '!is_writable('.$filename.')<BR>';
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function RemoveID3v1($filename, $showerrors=false) {
|
|
// File MUST be writeable - CHMOD(646) at least
|
|
if (is_writeable($filename)) {
|
|
if ($fp_source = @fopen($filename, 'r+b')) {
|
|
fseek($fp_source, -128, SEEK_END);
|
|
if (fread($fp_source, 3) == 'TAG') {
|
|
ftruncate($fp_source, filesize($filename) - 128);
|
|
} else {
|
|
// no ID3v1 tag to begin with - do nothing
|
|
}
|
|
fclose($fp_source);
|
|
} else {
|
|
$error .= 'Could not open '.$filename.' mode "r+b"<BR>';
|
|
}
|
|
if ($error) {
|
|
if ($showerrors) {
|
|
echo $error;
|
|
}
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function IsValidPriceString($pricestring) {
|
|
if (LanguageLookup(substr($pricestring, 0, 3), true) == '') {
|
|
return false;
|
|
} elseif (!IsANumber(substr($pricestring, 3), true)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function ID3v2FrameFlagsLookupTagAlter($framename, $majorversion) {
|
|
// unfinished
|
|
switch ($framename) {
|
|
case 'RGAD':
|
|
$allow = true;
|
|
default:
|
|
$allow = false;
|
|
break;
|
|
}
|
|
return $allow;
|
|
}
|
|
|
|
function ID3v2FrameFlagsLookupFileAlter($framename, $majorversion) {
|
|
// unfinished
|
|
switch ($framename) {
|
|
case 'RGAD':
|
|
return false;
|
|
break;
|
|
|
|
default:
|
|
return false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
function IsValidETCOevent($eventid, $majorversion) {
|
|
if (($eventid < 0) || ($eventid > 0xFF)) {
|
|
// outside range of 1 byte
|
|
return false;
|
|
} elseif (($eventid >= 0xF0) && ($eventid <= 0xFC)) {
|
|
// reserved for future use
|
|
return false;
|
|
} elseif (($eventid >= 0x17) && ($eventid <= 0xDF)) {
|
|
// reserved for future use
|
|
return false;
|
|
} elseif (($eventid >= 0x0E) && ($eventid <= 0x16) && ($majorversion == 2)) {
|
|
// not defined in ID3v2.2
|
|
return false;
|
|
} elseif (($eventid >= 0x15) && ($eventid <= 0x16) && ($majorversion == 3)) {
|
|
// not defined in ID3v2.3
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function IsValidSYLTtype($contenttype, $majorversion) {
|
|
if (($contenttype >= 0) && ($contenttype <= 8) && ($majorversion == 4)) {
|
|
return true;
|
|
} elseif (($contenttype >= 0) && ($contenttype <= 6) && ($majorversion == 3)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidRVA2channeltype($channeltype, $majorversion) {
|
|
if (($channeltype >= 0) && ($channeltype <= 8) && ($majorversion == 4)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidAPICpicturetype($picturetype, $majorversion) {
|
|
if (($picturetype >= 0) && ($picturetype <= 0x14) && ($majorversion >= 2) && ($majorversion <= 4)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidAPICimageformat($imageformat, $majorversion) {
|
|
if ($imageformat == '-->') {
|
|
return true;
|
|
} elseif ($majorversion == 2) {
|
|
if ((strlen($imageformat) == 3) && ($imageformat == strtoupper($imageformat))) {
|
|
return true;
|
|
}
|
|
} elseif (($majorversion == 3) || ($majorversion == 4)) {
|
|
if (IsValidMIMEstring($imageformat)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidCOMRreceivedas($receivedas, $majorversion) {
|
|
if (($majorversion >= 3) && ($receivedas >= 0) && ($receivedas <= 8)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidRGADname($RGADname, $majorversion) {
|
|
if (($RGADname >= 0) && ($RGADname <= 2)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidRGADoriginator($RGADoriginator, $majorversion) {
|
|
if (($RGADoriginator >= 0) && ($RGADoriginator <= 3)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidMIMEstring($mimestring) {
|
|
if ((strlen($mimestring) >= 3) && (strpos($mimestring, '/') > 0) && (strpos($mimestring, '/') < (strlen($mimestring) - 1))) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsWithinBitRange($number, $maxbits, $signed=false) {
|
|
if ($signed) {
|
|
if (($number > (0 - pow(2, $maxbits - 1))) && ($number <= pow(2, $maxbits - 1))) {
|
|
return true;
|
|
}
|
|
} else {
|
|
if (($number >= 0) && ($number <= pow(2, $maxbits))) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function IsValidTextEncoding($textencodingbyte, $majorversion) {
|
|
$textencodingintval = chr($textencodingbyte);
|
|
if (($textencodingintval >= 0) && ($textencodingintval <= 3) && ($majorversion == 4)) {
|
|
return true;
|
|
} elseif (($textencodingintval >= 0) && ($textencodingintval <= 1) && ($majorversion == 3)) {
|
|
return true;
|
|
} elseif (($textencodingintval >= 0) && ($textencodingintval <= 1) && ($majorversion == 2)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function safe_parse_url($url) {
|
|
$parts = @parse_url($url);
|
|
$parts['scheme'] = (isset($parts['scheme']) ? $parts['scheme'] : '');
|
|
$parts['host'] = (isset($parts['host']) ? $parts['host'] : '');
|
|
$parts['user'] = (isset($parts['user']) ? $parts['user'] : '');
|
|
$parts['pass'] = (isset($parts['pass']) ? $parts['pass'] : '');
|
|
$parts['path'] = (isset($parts['path']) ? $parts['path'] : '');
|
|
$parts['query'] = (isset($parts['query']) ? $parts['query'] : '');
|
|
return $parts;
|
|
}
|
|
|
|
function IsValidURL($url, $allowUserPass=false) {
|
|
if ($url == '') {
|
|
return false;
|
|
}
|
|
if ($allowUserPass !== true) {
|
|
if (strstr($url, '@')) {
|
|
// in the format http://user:pass@example.com or http://user@example.com
|
|
// but could easily be somebody incorrectly entering an email address in place of a URL
|
|
return false;
|
|
}
|
|
}
|
|
if ($parts = safe_parse_url($url)) {
|
|
if (($parts['scheme'] != 'http') && ($parts['scheme'] != 'https') && ($parts['scheme'] != 'ftp') && ($parts['scheme'] != 'gopher')) {
|
|
return false;
|
|
} elseif (!eregi("^[[:alnum:]]([-.]?[0-9a-z])*\.[a-z]{2,3}$", $parts['host'], $regs) && !IsValidDottedIP($parts['host'])) {
|
|
return false;
|
|
} elseif (!eregi("^([[:alnum:]-]|[\_])*$", $parts['user'], $regs)) {
|
|
return false;
|
|
} elseif (!eregi("^([[:alnum:]-]|[\_])*$", $parts['pass'], $regs)) {
|
|
return false;
|
|
} elseif (!eregi("^[[:alnum:]/_\.@~-]*$", $parts['path'], $regs)) {
|
|
return false;
|
|
} elseif (!eregi("^[[:alnum:]?&=+:;_()%#/,\.-]*$", $parts['query'], $regs)) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
?>
|