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-rw-r--r--3rdparty/SimplePie/library/SimplePie/gzdecode.php371
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diff --git a/3rdparty/SimplePie/library/SimplePie/gzdecode.php b/3rdparty/SimplePie/library/SimplePie/gzdecode.php
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--- a/3rdparty/SimplePie/library/SimplePie/gzdecode.php
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@@ -1,371 +0,0 @@
-<?php
-/**
- * SimplePie
- *
- * A PHP-Based RSS and Atom Feed Framework.
- * Takes the hard work out of managing a complete RSS/Atom solution.
- *
- * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice, this list of
- * conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright notice, this list
- * of conditions and the following disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * * Neither the name of the SimplePie Team nor the names of its contributors may be used
- * to endorse or promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
- * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * @package SimplePie
- * @version 1.3.1
- * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
- * @author Ryan Parman
- * @author Geoffrey Sneddon
- * @author Ryan McCue
- * @link http://simplepie.org/ SimplePie
- * @license http://www.opensource.org/licenses/bsd-license.php BSD License
- */
-
-
-/**
- * Decode 'gzip' encoded HTTP data
- *
- * @package SimplePie
- * @subpackage HTTP
- * @link http://www.gzip.org/format.txt
- */
-class SimplePie_gzdecode
-{
- /**
- * Compressed data
- *
- * @access private
- * @var string
- * @see gzdecode::$data
- */
- var $compressed_data;
-
- /**
- * Size of compressed data
- *
- * @access private
- * @var int
- */
- var $compressed_size;
-
- /**
- * Minimum size of a valid gzip string
- *
- * @access private
- * @var int
- */
- var $min_compressed_size = 18;
-
- /**
- * Current position of pointer
- *
- * @access private
- * @var int
- */
- var $position = 0;
-
- /**
- * Flags (FLG)
- *
- * @access private
- * @var int
- */
- var $flags;
-
- /**
- * Uncompressed data
- *
- * @access public
- * @see gzdecode::$compressed_data
- * @var string
- */
- var $data;
-
- /**
- * Modified time
- *
- * @access public
- * @var int
- */
- var $MTIME;
-
- /**
- * Extra Flags
- *
- * @access public
- * @var int
- */
- var $XFL;
-
- /**
- * Operating System
- *
- * @access public
- * @var int
- */
- var $OS;
-
- /**
- * Subfield ID 1
- *
- * @access public
- * @see gzdecode::$extra_field
- * @see gzdecode::$SI2
- * @var string
- */
- var $SI1;
-
- /**
- * Subfield ID 2
- *
- * @access public
- * @see gzdecode::$extra_field
- * @see gzdecode::$SI1
- * @var string
- */
- var $SI2;
-
- /**
- * Extra field content
- *
- * @access public
- * @see gzdecode::$SI1
- * @see gzdecode::$SI2
- * @var string
- */
- var $extra_field;
-
- /**
- * Original filename
- *
- * @access public
- * @var string
- */
- var $filename;
-
- /**
- * Human readable comment
- *
- * @access public
- * @var string
- */
- var $comment;
-
- /**
- * Don't allow anything to be set
- *
- * @param string $name
- * @param mixed $value
- */
- public function __set($name, $value)
- {
- trigger_error("Cannot write property $name", E_USER_ERROR);
- }
-
- /**
- * Set the compressed string and related properties
- *
- * @param string $data
- */
- public function __construct($data)
- {
- $this->compressed_data = $data;
- $this->compressed_size = strlen($data);
- }
-
- /**
- * Decode the GZIP stream
- *
- * @return bool Successfulness
- */
- public function parse()
- {
- if ($this->compressed_size >= $this->min_compressed_size)
- {
- // Check ID1, ID2, and CM
- if (substr($this->compressed_data, 0, 3) !== "\x1F\x8B\x08")
- {
- return false;
- }
-
- // Get the FLG (FLaGs)
- $this->flags = ord($this->compressed_data[3]);
-
- // FLG bits above (1 << 4) are reserved
- if ($this->flags > 0x1F)
- {
- return false;
- }
-
- // Advance the pointer after the above
- $this->position += 4;
-
- // MTIME
- $mtime = substr($this->compressed_data, $this->position, 4);
- // Reverse the string if we're on a big-endian arch because l is the only signed long and is machine endianness
- if (current(unpack('S', "\x00\x01")) === 1)
- {
- $mtime = strrev($mtime);
- }
- $this->MTIME = current(unpack('l', $mtime));
- $this->position += 4;
-
- // Get the XFL (eXtra FLags)
- $this->XFL = ord($this->compressed_data[$this->position++]);
-
- // Get the OS (Operating System)
- $this->OS = ord($this->compressed_data[$this->position++]);
-
- // Parse the FEXTRA
- if ($this->flags & 4)
- {
- // Read subfield IDs
- $this->SI1 = $this->compressed_data[$this->position++];
- $this->SI2 = $this->compressed_data[$this->position++];
-
- // SI2 set to zero is reserved for future use
- if ($this->SI2 === "\x00")
- {
- return false;
- }
-
- // Get the length of the extra field
- $len = current(unpack('v', substr($this->compressed_data, $this->position, 2)));
- $this->position += 2;
-
- // Check the length of the string is still valid
- $this->min_compressed_size += $len + 4;
- if ($this->compressed_size >= $this->min_compressed_size)
- {
- // Set the extra field to the given data
- $this->extra_field = substr($this->compressed_data, $this->position, $len);
- $this->position += $len;
- }
- else
- {
- return false;
- }
- }
-
- // Parse the FNAME
- if ($this->flags & 8)
- {
- // Get the length of the filename
- $len = strcspn($this->compressed_data, "\x00", $this->position);
-
- // Check the length of the string is still valid
- $this->min_compressed_size += $len + 1;
- if ($this->compressed_size >= $this->min_compressed_size)
- {
- // Set the original filename to the given string
- $this->filename = substr($this->compressed_data, $this->position, $len);
- $this->position += $len + 1;
- }
- else
- {
- return false;
- }
- }
-
- // Parse the FCOMMENT
- if ($this->flags & 16)
- {
- // Get the length of the comment
- $len = strcspn($this->compressed_data, "\x00", $this->position);
-
- // Check the length of the string is still valid
- $this->min_compressed_size += $len + 1;
- if ($this->compressed_size >= $this->min_compressed_size)
- {
- // Set the original comment to the given string
- $this->comment = substr($this->compressed_data, $this->position, $len);
- $this->position += $len + 1;
- }
- else
- {
- return false;
- }
- }
-
- // Parse the FHCRC
- if ($this->flags & 2)
- {
- // Check the length of the string is still valid
- $this->min_compressed_size += $len + 2;
- if ($this->compressed_size >= $this->min_compressed_size)
- {
- // Read the CRC
- $crc = current(unpack('v', substr($this->compressed_data, $this->position, 2)));
-
- // Check the CRC matches
- if ((crc32(substr($this->compressed_data, 0, $this->position)) & 0xFFFF) === $crc)
- {
- $this->position += 2;
- }
- else
- {
- return false;
- }
- }
- else
- {
- return false;
- }
- }
-
- // Decompress the actual data
- if (($this->data = gzinflate(substr($this->compressed_data, $this->position, -8))) === false)
- {
- return false;
- }
- else
- {
- $this->position = $this->compressed_size - 8;
- }
-
- // Check CRC of data
- $crc = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
- $this->position += 4;
- /*if (extension_loaded('hash') && sprintf('%u', current(unpack('V', hash('crc32b', $this->data)))) !== sprintf('%u', $crc))
- {
- return false;
- }*/
-
- // Check ISIZE of data
- $isize = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
- $this->position += 4;
- if (sprintf('%u', strlen($this->data) & 0xFFFFFFFF) !== sprintf('%u', $isize))
- {
- return false;
- }
-
- // Wow, against all odds, we've actually got a valid gzip string
- return true;
- }
- else
- {
- return false;
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-24 13:03:37 +0000