Файл: vendor/guzzlehttp/guzzle/src/Handler/HeaderProcessor.php
Строк: 101
<?php
namespace GuzzleHttpHandler;
use GuzzleHttpUtils;
/**
* @internal
*/
final class HeaderProcessor
{
/**
* Returns the HTTP version, status code, reason phrase, and headers.
*
* @param string[] $headers
*
* @return array{0:string, 1:int, 2:?string, 3:array}
*
* @throws RuntimeException
*/
public static function parseHeaders(array $headers): array
{
if ($headers === []) {
throw new RuntimeException('Expected a non-empty array of header data');
}
$headers = self::getLastHeaderBlock(array_values($headers));
$statusLine = array_shift($headers);
if ($statusLine === null) {
throw new RuntimeException('Expected a non-empty array of header data');
}
$parts = explode(' ', $statusLine, 3);
$version = explode('/', $parts[0])[1] ?? null;
if ($version === null) {
throw new RuntimeException('HTTP version missing from header data');
}
$status = $parts[1] ?? null;
if ($status === null) {
throw new RuntimeException('HTTP status code missing from header data');
}
if (!preg_match('/^d{3}$/D', $status)) {
throw new RuntimeException('HTTP status code is invalid');
}
foreach ($headers as $header) {
if (strpos($header, ':') === false) {
throw new RuntimeException('HTTP header line is invalid');
}
}
return [$version, (int) $status, $parts[2] ?? null, Utils::headersFromLines($headers)];
}
public static function isStatusLineCandidate(string $line): bool
{
return preg_match('/^HTTP/[0-9]+(?:.[0-9]+)? [0-9]{3}(?: [^rn]*)?(?:rn|r|n)?$/iD', $line) === 1;
}
public static function isValidHeaderFieldLine(string $line): bool
{
$parts = explode(':', $line, 2);
if (!isset($parts[1])) {
return false;
}
if (!preg_match('/^[a-zA-Z0-9'`#$%&*+.^_|~!-]+$/D', $parts[0])) {
return false;
}
return preg_match('/^[x20x09x21-x7Ex80-xFF]*(?:rn|r|n)?$/D', trim($parts[1], " t")) === 1;
}
/**
* @param non-empty-list<string> $headers
*
* @return list<string>
*/
private static function getLastHeaderBlock(array $headers): array
{
$lastStatusLine = 0;
foreach ($headers as $index => $line) {
if (self::isStatusLineCandidate($line)) {
$lastStatusLine = $index;
}
}
return array_slice($headers, $lastStatusLine);
}
}