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<?php
namespace GuzzleHttp\Message;
/**
* Request and response parser used by Guzzle
*/
class MessageParser
{
/**
* Parse an HTTP request message into an associative array of parts.
*
* @param string $message HTTP request to parse
*
* @return array|bool Returns false if the message is invalid
*/
public function parseRequest($message)
{
if (!($parts = $this->parseMessage($message))) {
return false;
}
// Parse the protocol and protocol version
if (isset($parts['start_line'][2])) {
$startParts = explode('/', $parts['start_line'][2]);
$protocol = strtoupper($startParts[0]);
$version = isset($startParts[1]) ? $startParts[1] : '1.1';
} else {
$protocol = 'HTTP';
$version = '1.1';
}
$parsed = [
'method' => strtoupper($parts['start_line'][0]),
'protocol' => $protocol,
'protocol_version' => $version,
'headers' => $parts['headers'],
'body' => $parts['body']
];
$parsed['request_url'] = $this->getUrlPartsFromMessage(
(isset($parts['start_line'][1]) ? $parts['start_line'][1] : ''), $parsed);
return $parsed;
}
/**
* Parse an HTTP response message into an associative array of parts.
*
* @param string $message HTTP response to parse
*
* @return array|bool Returns false if the message is invalid
*/
public function parseResponse($message)
{
if (!($parts = $this->parseMessage($message))) {
return false;
}
list($protocol, $version) = explode('/', trim($parts['start_line'][0]));
return [
'protocol' => $protocol,
'protocol_version' => $version,
'code' => $parts['start_line'][1],
'reason_phrase' => isset($parts['start_line'][2]) ? $parts['start_line'][2] : '',
'headers' => $parts['headers'],
'body' => $parts['body']
];
}
/**
* Parse a message into parts
*
* @param string $message Message to parse
*
* @return array|bool
*/
private function parseMessage($message)
{
if (!$message) {
return false;
}
$startLine = null;
$headers = [];
$body = '';
// Iterate over each line in the message, accounting for line endings
$lines = preg_split('/(\\r?\\n)/', $message, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($i = 0, $totalLines = count($lines); $i < $totalLines; $i += 2) {
$line = $lines[$i];
// If two line breaks were encountered, then this is the end of body
if (empty($line)) {
if ($i < $totalLines - 1) {
$body = implode('', array_slice($lines, $i + 2));
}
break;
}
// Parse message headers
if (!$startLine) {
$startLine = explode(' ', $line, 3);
} elseif (strpos($line, ':')) {
$parts = explode(':', $line, 2);
$key = trim($parts[0]);
$value = isset($parts[1]) ? trim($parts[1]) : '';
if (!isset($headers[$key])) {
$headers[$key] = $value;
} elseif (!is_array($headers[$key])) {
$headers[$key] = [$headers[$key], $value];
} else {
$headers[$key][] = $value;
}
}
}
return [
'start_line' => $startLine,
'headers' => $headers,
'body' => $body
];
}
/**
* Create URL parts from HTTP message parts
*
* @param string $requestUrl Associated URL
* @param array $parts HTTP message parts
*
* @return array
*/
private function getUrlPartsFromMessage($requestUrl, array $parts)
{
// Parse the URL information from the message
$urlParts = ['path' => $requestUrl, 'scheme' => 'http'];
// Check for the Host header
if (isset($parts['headers']['Host'])) {
$urlParts['host'] = $parts['headers']['Host'];
} elseif (isset($parts['headers']['host'])) {
$urlParts['host'] = $parts['headers']['host'];
} else {
$urlParts['host'] = null;
}
if (false === strpos($urlParts['host'], ':')) {
$urlParts['port'] = '';
} else {
$hostParts = explode(':', $urlParts['host']);
$urlParts['host'] = trim($hostParts[0]);
$urlParts['port'] = (int) trim($hostParts[1]);
if ($urlParts['port'] == 443) {
$urlParts['scheme'] = 'https';
}
}
// Check if a query is present
$path = $urlParts['path'];
$qpos = strpos($path, '?');
if ($qpos) {
$urlParts['query'] = substr($path, $qpos + 1);
$urlParts['path'] = substr($path, 0, $qpos);
} else {
$urlParts['query'] = '';
}
return $urlParts;
}
}
|
