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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | // ViaThinkSoft YouTube Downloader Util 2.3 |
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| 4 | // Revision: 2022-02-06 |
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| 5 | // Author: Daniel Marschall <www.daniel-marschall.de> |
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| 6 | // Licensed under the terms of the Apache 2.0 License |
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| 7 | |||
| 8 | function cs_get_checksumfilename($file, $type='sfv') { |
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| 9 | $dir = dirname($file); |
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| 10 | $files = preg_grep('/\.'.preg_quote($type,'/').'$/i', glob($dir.'/*')); |
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| 11 | |||
| 12 | if (count($files) > 0) { |
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| 13 | $cs_file = array_pop($files); |
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| 14 | } else { |
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| 15 | $cs_file = $dir.'/'.basename(dirname($file)).'.'.$type; |
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| 16 | } |
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| 17 | return $cs_file; |
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| 18 | } |
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| 19 | |||
| 20 | function cs_add_automatically($file, $type='sfv') { |
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| 21 | $cs_file = cs_get_checksumfilename($file, $type); |
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| 22 | // echo "Checksum file: $cs_file\n"; |
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| 23 | if (strtolower($type) == 'sfv') { |
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| 24 | if (file_exists($cs_file)) { |
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| 25 | $files = sfv_get_files($cs_file); |
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| 26 | if (in_arrayi(basename($file), $files)) return true; |
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| 27 | } else { |
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| 28 | file_put_contents($cs_file, "; Generated by ViaThinkSoft\r\n"); // TODO: BOM |
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| 29 | $files = array(); |
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| 30 | } |
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| 31 | $hash = crc32_file($file); |
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| 32 | if ($hash === false) { |
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| 33 | fwrite(STDERR, "Cannot calculate hash of file '$file'\n"); |
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| 34 | return false; |
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| 35 | } |
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| 36 | $crc32 = strtoupper($hash); |
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| 37 | file_put_contents($cs_file, basename($file)." $crc32\r\n", FILE_APPEND); |
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| 38 | return true; |
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| 39 | } |
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| 40 | else if (strtolower($type) == 'md5') { |
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| 41 | if (file_exists($cs_file)) { |
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| 42 | $files = md5_get_files($cs_file); |
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| 43 | if (in_arrayi(basename($file), $files)) return true; |
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| 44 | } else { |
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| 45 | file_put_contents($cs_file, "; Generated by ViaThinkSoft\r\n"); // TODO: BOM |
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| 46 | $files = array(); |
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| 47 | } |
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| 48 | $hash = md5_file($file); |
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| 49 | if ($hash === false) { |
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| 50 | fwrite(STDERR, "Cannot calculate hash of file '$file'\n"); |
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| 51 | return false; |
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| 52 | } |
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| 53 | $md5 = strtolower($hash); |
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| 54 | file_put_contents($cs_file, "$md5 *".basename($file)."\r\n", FILE_APPEND); |
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| 55 | return true; |
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| 56 | } |
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| 57 | else if (strtolower($type) == 'none') { |
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| 58 | return true; |
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| 59 | } |
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| 60 | else { |
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| 61 | fwrite(STDERR, "Unknown checksum type '$type'. Must be SFV, MD5 or None\n"); |
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| 62 | return false; |
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| 63 | } |
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| 64 | } |
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| 65 | |||
| 66 | function md5_get_files($filename) { |
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| 67 | // Source: https://github.com/danielmarschall/checksum-tools/blob/master/PHP/md5_generate.php |
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| 68 | $out = array(); |
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| 69 | $lines = file($filename); |
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| 70 | foreach ($lines as $line) { |
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| 71 | $line = str_replace("\xEF\xBB\xBF",'',$line); |
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| 72 | $line = trim($line); |
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| 73 | if ($line == '') continue; |
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| 74 | $line = str_replace('*', ' ', $line); |
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| 75 | $line = str_replace("\t", ' ', $line); |
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| 76 | list($checksum, $origname) = explode(' ', $line, 2); |
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| 77 | $origname = dirname($filename) . '/' . trim($origname); |
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| 78 | $checksum = trim($checksum); |
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| 79 | $out[] = $origname; |
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| 80 | } |
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| 81 | |||
| 82 | return $out; |
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| 83 | } |
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| 84 | |||
| 85 | function sfv_get_files($filename) { |
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| 86 | // Source: https://github.com/danielmarschall/checksum-tools/blob/master/PHP/sfv_generate.php |
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| 87 | $out = array(); |
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| 88 | $lines = file($filename); |
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| 89 | foreach ($lines as $line) { |
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| 90 | $line = rtrim($line); |
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| 91 | if ($line == '') continue; |
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| 92 | if (substr($line,0,1) == ';') continue; |
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| 93 | $out[] = substr($line, 0, strrpos($line, ' ')); |
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| 94 | |||
| 95 | } |
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| 96 | return $out; |
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| 97 | } |
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| 98 | |||
| 99 | function swapEndianness($hex) { |
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| 100 | // Source: https://github.com/danielmarschall/checksum-tools/blob/master/PHP/sfv_generate.php |
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| 101 | return implode('', array_reverse(str_split($hex, 2))); |
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| 102 | } |
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| 103 | |||
| 104 | function crc32_file($filename, $rawOutput = false) { |
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| 105 | // Source: https://github.com/danielmarschall/checksum-tools/blob/master/PHP/sfv_generate.php |
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| 106 | $hash = hash_file('crc32b', $filename, true); |
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| 107 | if ($hash === false) return false; |
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| 108 | $out = bin2hex($hash); |
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| 109 | if (hash('crc32b', 'TEST') == 'b893eaee') { |
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| 110 | // hash_file() in PHP 5.2 has the wrong Endianess! |
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| 111 | // https://bugs.php.net/bug.php?id=47467 |
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| 112 | $out = swapEndianness($out); |
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| 113 | } |
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| 114 | return $out; |
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| 115 | } |
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| 116 | |||
| 117 | function in_arrayi($needle, $haystack) { |
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| 118 | // Source: https://www.php.net/manual/en/function.in-array.php#89256 |
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| 119 | return in_array(strtolower($needle), array_map('strtolower', $haystack)); |
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| 120 | } |