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<?php namespace Google\Site_Kit_Dependencies\GuzzleHttp\Psr7; use Google\Site_Kit_Dependencies\Psr\Http\Message\MessageInterface; use Google\Site_Kit_Dependencies\Psr\Http\Message\RequestInterface; use Google\Site_Kit_Dependencies\Psr\Http\Message\ResponseInterface; final class Message { /** * Returns the string representation of an HTTP message. * * @param MessageInterface $message Message to convert to a string. * * @return string */ public static function toString(\Google\Site_Kit_Dependencies\Psr\Http\Message\MessageInterface $message) { if ($message instanceof \Google\Site_Kit_Dependencies\Psr\Http\Message\RequestInterface) { $msg = \trim($message->getMethod() . ' ' . $message->getRequestTarget()) . ' HTTP/' . $message->getProtocolVersion(); if (!$message->hasHeader('host')) { $msg .= "\r\nHost: " . $message->getUri()->getHost(); } } elseif ($message instanceof \Google\Site_Kit_Dependencies\Psr\Http\Message\ResponseInterface) { $msg = 'HTTP/' . $message->getProtocolVersion() . ' ' . $message->getStatusCode() . ' ' . $message->getReasonPhrase(); } else { throw new \InvalidArgumentException('Unknown message type'); } foreach ($message->getHeaders() as $name => $values) { if (\strtolower($name) === 'set-cookie') { foreach ($values as $value) { $msg .= "\r\n{$name}: " . $value; } } else { $msg .= "\r\n{$name}: " . \implode(', ', $values); } } return "{$msg}\r\n\r\n" . $message->getBody(); } /** * Get a short summary of the message body. * * Will return `null` if the response is not printable. * * @param MessageInterface $message The message to get the body summary * @param int $truncateAt The maximum allowed size of the summary * * @return string|null */ public static function bodySummary(\Google\Site_Kit_Dependencies\Psr\Http\Message\MessageInterface $message, $truncateAt = 120) { $body = $message->getBody(); if (!$body->isSeekable() || !$body->isReadable()) { return null; } $size = $body->getSize(); if ($size === 0) { return null; } $summary = $body->read($truncateAt); $body->rewind(); if ($size > $truncateAt) { $summary .= ' (truncated...)'; } // Matches any printable character, including unicode characters: // letters, marks, numbers, punctuation, spacing, and separators. if (\preg_match('/[^\\pL\\pM\\pN\\pP\\pS\\pZ\\n\\r\\t]/u', $summary)) { return null; } return $summary; } /** * Attempts to rewind a message body and throws an exception on failure. * * The body of the message will only be rewound if a call to `tell()` * returns a value other than `0`. * * @param MessageInterface $message Message to rewind * * @throws \RuntimeException */ public static function rewindBody(\Google\Site_Kit_Dependencies\Psr\Http\Message\MessageInterface $message) { $body = $message->getBody(); if ($body->tell()) { $body->rewind(); } } /** * Parses an HTTP message into an associative array. * * The array contains the "start-line" key containing the start line of * the message, "headers" key containing an associative array of header * array values, and a "body" key containing the body of the message. * * @param string $message HTTP request or response to parse. * * @return array */ public static function parseMessage($message) { if (!$message) { throw new \InvalidArgumentException('Invalid message'); } $message = \ltrim($message, "\r\n"); $messageParts = \preg_split("/\r?\n\r?\n/", $message, 2); if ($messageParts === \false || \count($messageParts) !== 2) { throw new \InvalidArgumentException('Invalid message: Missing header delimiter'); } list($rawHeaders, $body) = $messageParts; $rawHeaders .= "\r\n"; // Put back the delimiter we split previously $headerParts = \preg_split("/\r?\n/", $rawHeaders, 2); if ($headerParts === \false || \count($headerParts) !== 2) { throw new \InvalidArgumentException('Invalid message: Missing status line'); } list($startLine, $rawHeaders) = $headerParts; if (\preg_match("/(?:^HTTP\\/|^[A-Z]+ \\S+ HTTP\\/)(\\d+(?:\\.\\d+)?)/i", $startLine, $matches) && $matches[1] === '1.0') { // Header folding is deprecated for HTTP/1.1, but allowed in HTTP/1.0 $rawHeaders = \preg_replace(\Google\Site_Kit_Dependencies\GuzzleHttp\Psr7\Rfc7230::HEADER_FOLD_REGEX, ' ', $rawHeaders); } /** @var array[] $headerLines */ $count = \preg_match_all(\Google\Site_Kit_Dependencies\GuzzleHttp\Psr7\Rfc7230::HEADER_REGEX, $rawHeaders, $headerLines, \PREG_SET_ORDER); // If these aren't the same, then one line didn't match and there's an invalid header. if ($count !== \substr_count($rawHeaders, "\n")) { // Folding is deprecated, see https://tools.ietf.org/html/rfc7230#section-3.2.4 if (\preg_match(\Google\Site_Kit_Dependencies\GuzzleHttp\Psr7\Rfc7230::HEADER_FOLD_REGEX, $rawHeaders)) { throw new \InvalidArgumentException('Invalid header syntax: Obsolete line folding'); } throw new \InvalidArgumentException('Invalid header syntax'); } $headers = []; foreach ($headerLines as $headerLine) { $headers[$headerLine[1]][] = $headerLine[2]; } return ['start-line' => $startLine, 'headers' => $headers, 'body' => $body]; } /** * Constructs a URI for an HTTP request message. * * @param string $path Path from the start-line * @param array $headers Array of headers (each value an array). * * @return string */ public static function parseRequestUri($path, array $headers) { $hostKey = \array_filter(\array_keys($headers), function ($k) { return \strtolower($k) === 'host'; }); // If no host is found, then a full URI cannot be constructed. if (!$hostKey) { return $path; } $host = $headers[\reset($hostKey)][0]; $scheme = \substr($host, -4) === ':443' ? 'https' : 'http'; return $scheme . '://' . $host . '/' . \ltrim($path, '/'); } /** * Parses a request message string into a request object. * * @param string $message Request message string. * * @return Request */ public static function parseRequest($message) { $data = self::parseMessage($message); $matches = []; if (!\preg_match('/^[\\S]+\\s+([a-zA-Z]+:\\/\\/|\\/).*/', $data['start-line'], $matches)) { throw new \InvalidArgumentException('Invalid request string'); } $parts = \explode(' ', $data['start-line'], 3); $version = isset($parts[2]) ? \explode('/', $parts[2])[1] : '1.1'; $request = new \Google\Site_Kit_Dependencies\GuzzleHttp\Psr7\Request($parts[0], $matches[1] === '/' ? self::parseRequestUri($parts[1], $data['headers']) : $parts[1], $data['headers'], $data['body'], $version); return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]); } /** * Parses a response message string into a response object. * * @param string $message Response message string. * * @return Response */ public static function parseResponse($message) { $data = self::parseMessage($message); // According to https://tools.ietf.org/html/rfc7230#section-3.1.2 the space // between status-code and reason-phrase is required. But browsers accept // responses without space and reason as well. if (!\preg_match('/^HTTP\\/.* [0-9]{3}( .*|$)/', $data['start-line'])) { throw new \InvalidArgumentException('Invalid response string: ' . $data['start-line']); } $parts = \explode(' ', $data['start-line'], 3); return new \Google\Site_Kit_Dependencies\GuzzleHttp\Psr7\Response((int) $parts[1], $data['headers'], $data['body'], \explode('/', $parts[0])[1], isset($parts[2]) ? $parts[2] : null); } }
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