php-getid3 1.9.12+dfsg-1 / usr / share / php / getid3 / write.real.php

This file is indexed.

/usr/share/php/getid3/write.real.php is in php-getid3 1.9.12+dfsg-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below. 

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
//          also https://github.com/JamesHeinrich/getID3       //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details                             //
/////////////////////////////////////////////////////////////////
//                                                             //
// write.real.php                                              //
// module for writing RealAudio/RealVideo tags                 //
// dependencies: module.tag.real.php                           //
//                                                            ///
/////////////////////////////////////////////////////////////////

class getid3_write_real
{
	public $filename;
	public $tag_data          = array();
	public $fread_buffer_size = 32768;   // read buffer size in bytes
	public $warnings          = array(); // any non-critical errors will be stored here
	public $errors            = array(); // any critical errors will be stored here
	public $paddedlength      = 512;     // minimum length of CONT tag in bytes

	public function __construct() {
		return true;
	}

	public function WriteReal() {
		// File MUST be writeable - CHMOD(646) at least
		if (is_writeable($this->filename) && is_file($this->filename) && ($fp_source = fopen($this->filename, 'r+b'))) {

			// Initialize getID3 engine
			$getID3 = new getID3;
			$OldThisFileInfo = $getID3->analyze($this->filename);
			if (empty($OldThisFileInfo['real']['chunks']) && !empty($OldThisFileInfo['real']['old_ra_header'])) {
				$this->errors[] = 'Cannot write Real tags on old-style file format';
				fclose($fp_source);
				return false;
			}

			if (empty($OldThisFileInfo['real']['chunks'])) {
				$this->errors[] = 'Cannot write Real tags because cannot find DATA chunk in file';
				fclose($fp_source);
				return false;
			}
			foreach ($OldThisFileInfo['real']['chunks'] as $chunknumber => $chunkarray) {
				$oldChunkInfo[$chunkarray['name']] = $chunkarray;
			}
			if (!empty($oldChunkInfo['CONT']['length'])) {
				$this->paddedlength = max($oldChunkInfo['CONT']['length'], $this->paddedlength);
			}

			$new_CONT_tag_data = $this->GenerateCONTchunk();
			$new_PROP_tag_data = $this->GeneratePROPchunk($OldThisFileInfo['real']['chunks'], $new_CONT_tag_data);
			$new__RMF_tag_data = $this->GenerateRMFchunk($OldThisFileInfo['real']['chunks']);

			if (isset($oldChunkInfo['.RMF']['length']) && ($oldChunkInfo['.RMF']['length'] == strlen($new__RMF_tag_data))) {
				fseek($fp_source, $oldChunkInfo['.RMF']['offset']);
				fwrite($fp_source, $new__RMF_tag_data);
			} else {
				$this->errors[] = 'new .RMF tag ('.strlen($new__RMF_tag_data).' bytes) different length than old .RMF tag ('.$oldChunkInfo['.RMF']['length'].' bytes)';
				fclose($fp_source);
				return false;
			}

			if (isset($oldChunkInfo['PROP']['length']) && ($oldChunkInfo['PROP']['length'] == strlen($new_PROP_tag_data))) {
				fseek($fp_source, $oldChunkInfo['PROP']['offset']);
				fwrite($fp_source, $new_PROP_tag_data);
			} else {
				$this->errors[] = 'new PROP tag ('.strlen($new_PROP_tag_data).' bytes) different length than old PROP tag ('.$oldChunkInfo['PROP']['length'].' bytes)';
				fclose($fp_source);
				return false;
			}

			if (isset($oldChunkInfo['CONT']['length']) && ($oldChunkInfo['CONT']['length'] == strlen($new_CONT_tag_data))) {

				// new data length is same as old data length - just overwrite
				fseek($fp_source, $oldChunkInfo['CONT']['offset']);
				fwrite($fp_source, $new_CONT_tag_data);
				fclose($fp_source);
				return true;

			} else {

				if (empty($oldChunkInfo['CONT'])) {
					// no existing CONT chunk
					$BeforeOffset = $oldChunkInfo['DATA']['offset'];
					$AfterOffset  = $oldChunkInfo['DATA']['offset'];
				} else {
					// new data is longer than old data
					$BeforeOffset = $oldChunkInfo['CONT']['offset'];
					$AfterOffset  = $oldChunkInfo['CONT']['offset'] + $oldChunkInfo['CONT']['length'];
				}
				if ($tempfilename = tempnam(GETID3_TEMP_DIR, 'getID3')) {
					if (is_writable($tempfilename) && is_file($tempfilename) && ($fp_temp = fopen($tempfilename, 'wb'))) {

						rewind($fp_source);
						fwrite($fp_temp, fread($fp_source, $BeforeOffset));
						fwrite($fp_temp, $new_CONT_tag_data);
						fseek($fp_source, $AfterOffset);
						while ($buffer = fread($fp_source, $this->fread_buffer_size)) {
							fwrite($fp_temp, $buffer, strlen($buffer));
						}
						fclose($fp_temp);

						if (copy($tempfilename, $this->filename)) {
							unlink($tempfilename);
							fclose($fp_source);
							return true;
						}
						unlink($tempfilename);
						$this->errors[] = 'FAILED: copy('.$tempfilename.', '.$this->filename.')';

					} else {
						$this->errors[] = 'Could not fopen("'.$tempfilename.'", "wb")';
					}
				}
				fclose($fp_source);
				return false;

			}

		}
		$this->errors[] = 'Could not fopen("'.$this->filename.'", "r+b")';
		return false;
	}

	public function GenerateRMFchunk(&$chunks) {
		$oldCONTexists = false;
		foreach ($chunks as $key => $chunk) {
			$chunkNameKeys[$chunk['name']] = $key;
			if ($chunk['name'] == 'CONT') {
				$oldCONTexists = true;
			}
		}
		$newHeadersCount = $chunks[$chunkNameKeys['.RMF']]['headers_count'] + ($oldCONTexists ? 0 : 1);

		$RMFchunk  = "\x00\x00"; // object version
		$RMFchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['.RMF']]['file_version'], 4);
		$RMFchunk .= getid3_lib::BigEndian2String($newHeadersCount,                                4);

		$RMFchunk  = '.RMF'.getid3_lib::BigEndian2String(strlen($RMFchunk) + 8, 4).$RMFchunk; // .RMF chunk identifier + chunk length
		return $RMFchunk;
	}

	public function GeneratePROPchunk(&$chunks, &$new_CONT_tag_data) {
		$old_CONT_length = 0;
		$old_DATA_offset = 0;
		$old_INDX_offset = 0;
		foreach ($chunks as $key => $chunk) {
			$chunkNameKeys[$chunk['name']] = $key;
			if ($chunk['name'] == 'CONT') {
				$old_CONT_length = $chunk['length'];
			} elseif ($chunk['name'] == 'DATA') {
				if (!$old_DATA_offset) {
					$old_DATA_offset = $chunk['offset'];
				}
			} elseif ($chunk['name'] == 'INDX') {
				if (!$old_INDX_offset) {
					$old_INDX_offset = $chunk['offset'];
				}
			}
		}
		$CONTdelta = strlen($new_CONT_tag_data) - $old_CONT_length;

		$PROPchunk  = "\x00\x00"; // object version
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['max_bit_rate'],    4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['avg_bit_rate'],    4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['max_packet_size'], 4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['avg_packet_size'], 4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['num_packets'],     4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['duration'],        4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['preroll'],         4);
		$PROPchunk .= getid3_lib::BigEndian2String(max(0, $old_INDX_offset + $CONTdelta),              4);
		$PROPchunk .= getid3_lib::BigEndian2String(max(0, $old_DATA_offset + $CONTdelta),              4);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['num_streams'],     2);
		$PROPchunk .= getid3_lib::BigEndian2String($chunks[$chunkNameKeys['PROP']]['flags_raw'],       2);

		$PROPchunk  = 'PROP'.getid3_lib::BigEndian2String(strlen($PROPchunk) + 8, 4).$PROPchunk; // PROP chunk identifier + chunk length
		return $PROPchunk;
	}

	public function GenerateCONTchunk() {
		foreach ($this->tag_data as $key => $value) {
			// limit each value to 0xFFFF bytes
			$this->tag_data[$key] = substr($value, 0, 65535);
		}

		$CONTchunk  = "\x00\x00"; // object version

		$CONTchunk .= getid3_lib::BigEndian2String((!empty($this->tag_data['title'])     ? strlen($this->tag_data['title'])     : 0), 2);
		$CONTchunk .= (!empty($this->tag_data['title'])     ? strlen($this->tag_data['title'])     : '');

		$CONTchunk .= getid3_lib::BigEndian2String((!empty($this->tag_data['artist'])    ? strlen($this->tag_data['artist'])    : 0), 2);
		$CONTchunk .= (!empty($this->tag_data['artist'])    ? strlen($this->tag_data['artist'])    : '');

		$CONTchunk .= getid3_lib::BigEndian2String((!empty($this->tag_data['copyright']) ? strlen($this->tag_data['copyright']) : 0), 2);
		$CONTchunk .= (!empty($this->tag_data['copyright']) ? strlen($this->tag_data['copyright']) : '');

		$CONTchunk .= getid3_lib::BigEndian2String((!empty($this->tag_data['comment'])   ? strlen($this->tag_data['comment'])   : 0), 2);
		$CONTchunk .= (!empty($this->tag_data['comment'])   ? strlen($this->tag_data['comment'])   : '');

		if ($this->paddedlength > (strlen($CONTchunk) + 8)) {
			$CONTchunk .= str_repeat("\x00", $this->paddedlength - strlen($CONTchunk) - 8);
		}

		$CONTchunk  = 'CONT'.getid3_lib::BigEndian2String(strlen($CONTchunk) + 8, 4).$CONTchunk; // CONT chunk identifier + chunk length

		return $CONTchunk;
	}

	public function RemoveReal() {
		// File MUST be writeable - CHMOD(646) at least
		if (is_writeable($this->filename) && is_file($this->filename) && ($fp_source = fopen($this->filename, 'r+b'))) {

			// Initialize getID3 engine
			$getID3 = new getID3;
			$OldThisFileInfo = $getID3->analyze($this->filename);
			if (empty($OldThisFileInfo['real']['chunks']) && !empty($OldThisFileInfo['real']['old_ra_header'])) {
				$this->errors[] = 'Cannot remove Real tags from old-style file format';
				fclose($fp_source);
				return false;
			}

			if (empty($OldThisFileInfo['real']['chunks'])) {
				$this->errors[] = 'Cannot remove Real tags because cannot find DATA chunk in file';
				fclose($fp_source);
				return false;
			}
			foreach ($OldThisFileInfo['real']['chunks'] as $chunknumber => $chunkarray) {
				$oldChunkInfo[$chunkarray['name']] = $chunkarray;
			}

			if (empty($oldChunkInfo['CONT'])) {
				// no existing CONT chunk
				fclose($fp_source);
				return true;
			}

			$BeforeOffset = $oldChunkInfo['CONT']['offset'];
			$AfterOffset  = $oldChunkInfo['CONT']['offset'] + $oldChunkInfo['CONT']['length'];
			if ($tempfilename = tempnam(GETID3_TEMP_DIR, 'getID3')) {
				if (is_writable($tempfilename) && is_file($tempfilename) && ($fp_temp = fopen($tempfilename, 'wb'))) {

					rewind($fp_source);
					fwrite($fp_temp, fread($fp_source, $BeforeOffset));
					fseek($fp_source, $AfterOffset);
					while ($buffer = fread($fp_source, $this->fread_buffer_size)) {
						fwrite($fp_temp, $buffer, strlen($buffer));
					}
					fclose($fp_temp);

					if (copy($tempfilename, $this->filename)) {
						unlink($tempfilename);
						fclose($fp_source);
						return true;
					}
					unlink($tempfilename);
					$this->errors[] = 'FAILED: copy('.$tempfilename.', '.$this->filename.')';

				} else {
					$this->errors[] = 'Could not fopen("'.$tempfilename.'", "wb")';
				}
			}
			fclose($fp_source);
			return false;
		}
		$this->errors[] = 'Could not fopen("'.$this->filename.'", "r+b")';
		return false;
	}

}

APT Browse - Built by Thomas Orozco.