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@@ -1,500 +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
- */
-
-
-/**
- * HTTP Response Parser
- *
- * @package SimplePie
- * @subpackage HTTP
- */
-class SimplePie_HTTP_Parser
-{
- /**
- * HTTP Version
- *
- * @var float
- */
- public $http_version = 0.0;
-
- /**
- * Status code
- *
- * @var int
- */
- public $status_code = 0;
-
- /**
- * Reason phrase
- *
- * @var string
- */
- public $reason = '';
-
- /**
- * Key/value pairs of the headers
- *
- * @var array
- */
- public $headers = array();
-
- /**
- * Body of the response
- *
- * @var string
- */
- public $body = '';
-
- /**
- * Current state of the state machine
- *
- * @var string
- */
- protected $state = 'http_version';
-
- /**
- * Input data
- *
- * @var string
- */
- protected $data = '';
-
- /**
- * Input data length (to avoid calling strlen() everytime this is needed)
- *
- * @var int
- */
- protected $data_length = 0;
-
- /**
- * Current position of the pointer
- *
- * @var int
- */
- protected $position = 0;
-
- /**
- * Name of the hedaer currently being parsed
- *
- * @var string
- */
- protected $name = '';
-
- /**
- * Value of the hedaer currently being parsed
- *
- * @var string
- */
- protected $value = '';
-
- /**
- * Create an instance of the class with the input data
- *
- * @param string $data Input data
- */
- public function __construct($data)
- {
- $this->data = $data;
- $this->data_length = strlen($this->data);
- }
-
- /**
- * Parse the input data
- *
- * @return bool true on success, false on failure
- */
- public function parse()
- {
- while ($this->state && $this->state !== 'emit' && $this->has_data())
- {
- $state = $this->state;
- $this->$state();
- }
- $this->data = '';
- if ($this->state === 'emit' || $this->state === 'body')
- {
- return true;
- }
- else
- {
- $this->http_version = '';
- $this->status_code = '';
- $this->reason = '';
- $this->headers = array();
- $this->body = '';
- return false;
- }
- }
-
- /**
- * Check whether there is data beyond the pointer
- *
- * @return bool true if there is further data, false if not
- */
- protected function has_data()
- {
- return (bool) ($this->position < $this->data_length);
- }
-
- /**
- * See if the next character is LWS
- *
- * @return bool true if the next character is LWS, false if not
- */
- protected function is_linear_whitespace()
- {
- return (bool) ($this->data[$this->position] === "\x09"
- || $this->data[$this->position] === "\x20"
- || ($this->data[$this->position] === "\x0A"
- && isset($this->data[$this->position + 1])
- && ($this->data[$this->position + 1] === "\x09" || $this->data[$this->position + 1] === "\x20")));
- }
-
- /**
- * Parse the HTTP version
- */
- protected function http_version()
- {
- if (strpos($this->data, "\x0A") !== false && strtoupper(substr($this->data, 0, 5)) === 'HTTP/')
- {
- $len = strspn($this->data, '0123456789.', 5);
- $this->http_version = substr($this->data, 5, $len);
- $this->position += 5 + $len;
- if (substr_count($this->http_version, '.') <= 1)
- {
- $this->http_version = (float) $this->http_version;
- $this->position += strspn($this->data, "\x09\x20", $this->position);
- $this->state = 'status';
- }
- else
- {
- $this->state = false;
- }
- }
- else
- {
- $this->state = false;
- }
- }
-
- /**
- * Parse the status code
- */
- protected function status()
- {
- if ($len = strspn($this->data, '0123456789', $this->position))
- {
- $this->status_code = (int) substr($this->data, $this->position, $len);
- $this->position += $len;
- $this->state = 'reason';
- }
- else
- {
- $this->state = false;
- }
- }
-
- /**
- * Parse the reason phrase
- */
- protected function reason()
- {
- $len = strcspn($this->data, "\x0A", $this->position);
- $this->reason = trim(substr($this->data, $this->position, $len), "\x09\x0D\x20");
- $this->position += $len + 1;
- $this->state = 'new_line';
- }
-
- /**
- * Deal with a new line, shifting data around as needed
- */
- protected function new_line()
- {
- $this->value = trim($this->value, "\x0D\x20");
- if ($this->name !== '' && $this->value !== '')
- {
- $this->name = strtolower($this->name);
- // We should only use the last Content-Type header. c.f. issue #1
- if (isset($this->headers[$this->name]) && $this->name !== 'content-type')
- {
- $this->headers[$this->name] .= ', ' . $this->value;
- }
- else
- {
- $this->headers[$this->name] = $this->value;
- }
- }
- $this->name = '';
- $this->value = '';
- if (substr($this->data[$this->position], 0, 2) === "\x0D\x0A")
- {
- $this->position += 2;
- $this->state = 'body';
- }
- elseif ($this->data[$this->position] === "\x0A")
- {
- $this->position++;
- $this->state = 'body';
- }
- else
- {
- $this->state = 'name';
- }
- }
-
- /**
- * Parse a header name
- */
- protected function name()
- {
- $len = strcspn($this->data, "\x0A:", $this->position);
- if (isset($this->data[$this->position + $len]))
- {
- if ($this->data[$this->position + $len] === "\x0A")
- {
- $this->position += $len;
- $this->state = 'new_line';
- }
- else
- {
- $this->name = substr($this->data, $this->position, $len);
- $this->position += $len + 1;
- $this->state = 'value';
- }
- }
- else
- {
- $this->state = false;
- }
- }
-
- /**
- * Parse LWS, replacing consecutive LWS characters with a single space
- */
- protected function linear_whitespace()
- {
- do
- {
- if (substr($this->data, $this->position, 2) === "\x0D\x0A")
- {
- $this->position += 2;
- }
- elseif ($this->data[$this->position] === "\x0A")
- {
- $this->position++;
- }
- $this->position += strspn($this->data, "\x09\x20", $this->position);
- } while ($this->has_data() && $this->is_linear_whitespace());
- $this->value .= "\x20";
- }
-
- /**
- * See what state to move to while within non-quoted header values
- */
- protected function value()
- {
- if ($this->is_linear_whitespace())
- {
- $this->linear_whitespace();
- }
- else
- {
- switch ($this->data[$this->position])
- {
- case '"':
- // Workaround for ETags: we have to include the quotes as
- // part of the tag.
- if (strtolower($this->name) === 'etag')
- {
- $this->value .= '"';
- $this->position++;
- $this->state = 'value_char';
- break;
- }
- $this->position++;
- $this->state = 'quote';
- break;
-
- case "\x0A":
- $this->position++;
- $this->state = 'new_line';
- break;
-
- default:
- $this->state = 'value_char';
- break;
- }
- }
- }
-
- /**
- * Parse a header value while outside quotes
- */
- protected function value_char()
- {
- $len = strcspn($this->data, "\x09\x20\x0A\"", $this->position);
- $this->value .= substr($this->data, $this->position, $len);
- $this->position += $len;
- $this->state = 'value';
- }
-
- /**
- * See what state to move to while within quoted header values
- */
- protected function quote()
- {
- if ($this->is_linear_whitespace())
- {
- $this->linear_whitespace();
- }
- else
- {
- switch ($this->data[$this->position])
- {
- case '"':
- $this->position++;
- $this->state = 'value';
- break;
-
- case "\x0A":
- $this->position++;
- $this->state = 'new_line';
- break;
-
- case '\\':
- $this->position++;
- $this->state = 'quote_escaped';
- break;
-
- default:
- $this->state = 'quote_char';
- break;
- }
- }
- }
-
- /**
- * Parse a header value while within quotes
- */
- protected function quote_char()
- {
- $len = strcspn($this->data, "\x09\x20\x0A\"\\", $this->position);
- $this->value .= substr($this->data, $this->position, $len);
- $this->position += $len;
- $this->state = 'value';
- }
-
- /**
- * Parse an escaped character within quotes
- */
- protected function quote_escaped()
- {
- $this->value .= $this->data[$this->position];
- $this->position++;
- $this->state = 'quote';
- }
-
- /**
- * Parse the body
- */
- protected function body()
- {
- $this->body = substr($this->data, $this->position);
- if (!empty($this->headers['transfer-encoding']))
- {
- unset($this->headers['transfer-encoding']);
- $this->state = 'chunked';
- }
- else
- {
- $this->state = 'emit';
- }
- }
-
- /**
- * Parsed a "Transfer-Encoding: chunked" body
- */
- protected function chunked()
- {
- if (!preg_match('/^([0-9a-f]+)[^\r\n]*\r\n/i', trim($this->body)))
- {
- $this->state = 'emit';
- return;
- }
-
- $decoded = '';
- $encoded = $this->body;
-
- while (true)
- {
- $is_chunked = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $encoded, $matches );
- if (!$is_chunked)
- {
- // Looks like it's not chunked after all
- $this->state = 'emit';
- return;
- }
-
- $length = hexdec(trim($matches[1]));
- if ($length === 0)
- {
- // Ignore trailer headers
- $this->state = 'emit';
- $this->body = $decoded;
- return;
- }
-
- $chunk_length = strlen($matches[0]);
- $decoded .= $part = substr($encoded, $chunk_length, $length);
- $encoded = substr($encoded, $chunk_length + $length + 2);
-
- if (trim($encoded) === '0' || empty($encoded))
- {
- $this->state = 'emit';
- $this->body = $decoded;
- return;
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 17:48:16 +0000