Merge pull request #181 from inthepoche/dev

beta4

1 files changed, 492 insertions, 0 deletions

diff --git a/inc/3rdparty/simplepie/SimplePie/HTTP/Parser.php b/inc/3rdparty/simplepie/SimplePie/HTTP/Parser.php
new file mode 100644
index 00000000..cc9660c6
--- /dev/null
+++ b/inc/3rdparty/simplepie/SimplePie/HTTP/Parser.php
@@ -0,0 +1,492 @@
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2009, 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-dev
+ * @copyright 2004-2010 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
+ * @todo phpDoc comments
+ */
+
+
+/**
+ * HTTP Response Parser
+ *
+ * @package SimplePie
+ */
+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
+                {
+                        $this->state = 'emit';
+                }
+        }
+
+        /**
+         * Parsed a "Transfer-Encoding: chunked" body
+         */
+        protected function chunked()
+        {
+                if (!preg_match('/^[0-9a-f]+(\s|\r|\n)+/mi', trim($this->body)))
+                {
+                        $this->state = 'emit';
+                        return;
+                }
+
+                $decoded = '';
+                $encoded = $this->body;
+
+                while (true)
+                {
+                        $is_chunked = (bool) preg_match( '/^([0-9a-f]+)(\s|\r|\n)+/mi', $encoded, $matches );
+                        if (!$is_chunked)
+                        {
+                                // Looks like it's not chunked after all
+                                $this->state = 'emit';
+                                return;
+                        }
+
+                        $length = hexdec($matches[1]);
+                        $chunk_length = strlen($matches[0]);
+                        $decoded .= $part = substr($encoded, $chunk_length, $length);
+                        $encoded = ltrim(substr($encoded, $chunk_length + $length), "\r\n");
+
+                        if (trim($encoded) === '0')
+                        {
+                                $this->state = 'emit';
+                                $this->body = $decoded;
+                                return;
+                        }
+                }
+        }
+}