diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/SimplePie/src/HTTP/Parser.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/SimplePie/src/HTTP/Parser.php	Fri Sep 05 18:52:52 2025 +0200
@@ -0,0 +1,508 @@
+<?php
+
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2022, Ryan Parman, Sam 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
+ * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Sam Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+namespace SimplePie\HTTP;
+
+/**
+ * HTTP Response Parser
+ *
+ * @package SimplePie
+ * @subpackage HTTP
+ */
+class 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 = [];
+
+    /**
+     * Body of the response
+     *
+     * @var string
+     */
+    public $body = '';
+
+    private const STATE_HTTP_VERSION = 'http_version';
+
+    private const STATE_STATUS = 'status';
+
+    private const STATE_REASON = 'reason';
+
+    private const STATE_NEW_LINE = 'new_line';
+
+    private const STATE_BODY = 'body';
+
+    private const STATE_NAME = 'name';
+
+    private const STATE_VALUE = 'value';
+
+    private const STATE_VALUE_CHAR = 'value_char';
+
+    private const STATE_QUOTE = 'quote';
+
+    private const STATE_QUOTE_ESCAPED = 'quote_escaped';
+
+    private const STATE_QUOTE_CHAR = 'quote_char';
+
+    private const STATE_CHUNKED = 'chunked';
+
+    private const STATE_EMIT = 'emit';
+
+    private const STATE_ERROR = false;
+
+    /**
+     * Current state of the state machine
+     *
+     * @var self::STATE_*
+     */
+    protected $state = self::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 !== self::STATE_EMIT && $this->has_data()) {
+            $state = $this->state;
+            $this->$state();
+        }
+        $this->data = '';
+        if ($this->state === self::STATE_EMIT || $this->state === self::STATE_BODY) {
+            return true;
+        }
+
+        $this->http_version = '';
+        $this->status_code = 0;
+        $this->reason = '';
+        $this->headers = [];
+        $this->body = '';
+        return false;
+    }
+
+    /**
+     * Check whether there is data beyond the pointer
+     *
+     * @return bool true if there is further data, false if not
+     */
+    protected function has_data()
+    {
+        return (bool) ($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 = self::STATE_STATUS;
+            } else {
+                $this->state = self::STATE_ERROR;
+            }
+        } else {
+            $this->state = self::STATE_ERROR;
+        }
+    }
+
+    /**
+     * Parse the status code
+     */
+    protected function status()
+    {
+        if ($len = strspn($this->data, '0123456789', $this->position)) {
+            $this->status_code = (int) substr($this->data, $this->position, $len);
+            $this->position += $len;
+            $this->state = self::STATE_REASON;
+        } else {
+            $this->state = self::STATE_ERROR;
+        }
+    }
+
+    /**
+     * 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 = self::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;
+            $this->state = self::STATE_BODY;
+        } elseif ($this->data[$this->position] === "\x0A") {
+            $this->position++;
+            $this->state = self::STATE_BODY;
+        } else {
+            $this->state = self::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 = self::STATE_NEW_LINE;
+            } else {
+                $this->name = substr($this->data, $this->position, $len);
+                $this->position += $len + 1;
+                $this->state = self::STATE_VALUE;
+            }
+        } else {
+            $this->state = self::STATE_ERROR;
+        }
+    }
+
+    /**
+     * Parse LWS, replacing consecutive LWS characters with a single space
+     */
+    protected function linear_whitespace()
+    {
+        do {
+            if (substr($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 = self::STATE_VALUE_CHAR;
+                        break;
+                    }
+                    $this->position++;
+                    $this->state = self::STATE_QUOTE;
+                    break;
+
+                case "\x0A":
+                    $this->position++;
+                    $this->state = self::STATE_NEW_LINE;
+                    break;
+
+                default:
+                    $this->state = self::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;
+        $this->state = self::STATE_VALUE;
+    }
+
+    /**
+     * See what state to move to while within quoted header values
+     */
+    protected function quote()
+    {
+        if ($this->is_linear_whitespace()) {
+            $this->linear_whitespace();
+        } else {
+            switch ($this->data[$this->position]) {
+                case '"':
+                    $this->position++;
+                    $this->state = self::STATE_VALUE;
+                    break;
+
+                case "\x0A":
+                    $this->position++;
+                    $this->state = self::STATE_NEW_LINE;
+                    break;
+
+                case '\\':
+                    $this->position++;
+                    $this->state = self::STATE_QUOTE_ESCAPED;
+                    break;
+
+                default:
+                    $this->state = self::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 = self::STATE_VALUE;
+    }
+
+    /**
+     * Parse an escaped character within quotes
+     */
+    protected function quote_escaped()
+    {
+        $this->value .= $this->data[$this->position];
+        $this->position++;
+        $this->state = self::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 = self::STATE_CHUNKED;
+        } else {
+            $this->state = self::STATE_EMIT;
+        }
+    }
+
+    /**
+     * Parsed a "Transfer-Encoding: chunked" body
+     */
+    protected function chunked()
+    {
+        if (!preg_match('/^([0-9a-f]+)[^\r\n]*\r\n/i', trim($this->body))) {
+            $this->state = self::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 = self::STATE_EMIT;
+                return;
+            }
+
+            $length = hexdec(trim($matches[1]));
+            if ($length === 0) {
+                // Ignore trailer headers
+                $this->state = self::STATE_EMIT;
+                $this->body = $decoded;
+                return;
+            }
+
+            $chunk_length = strlen($matches[0]);
+            $decoded .= substr($encoded, $chunk_length, $length);
+            $encoded = substr($encoded, $chunk_length + $length + 2);
+
+            // BC for PHP < 8.0: substr() can return bool instead of string
+            $encoded = ($encoded === false) ? '' : $encoded;
+
+            if (trim($encoded) === '0' || empty($encoded)) {
+                $this->state = self::STATE_EMIT;
+                $this->body = $decoded;
+                return;
+            }
+        }
+    }
+
+    /**
+     * Prepare headers (take care of proxies headers)
+     *
+     * @param string  $headers Raw headers
+     * @param integer $count   Redirection count. Default to 1.
+     *
+     * @return string
+     */
+    public static function prepareHeaders($headers, $count = 1)
+    {
+        $data = explode("\r\n\r\n", $headers, $count);
+        $data = array_pop($data);
+        if (false !== stripos($data, "HTTP/1.0 200 Connection established\r\n")) {
+            $exploded = explode("\r\n\r\n", $data, 2);
+            $data = end($exploded);
+        }
+        if (false !== stripos($data, "HTTP/1.1 200 Connection established\r\n")) {
+            $exploded = explode("\r\n\r\n", $data, 2);
+            $data = end($exploded);
+        }
+        return $data;
+    }
+}
+
+class_alias('SimplePie\HTTP\Parser', 'SimplePie_HTTP_Parser');