<?php
/**
* Slim Framework (https://slimframework.com)
*
* @license https://github.com/slimphp/Slim-Psr7/blob/master/LICENSE.md (MIT License)
*/
declare(strict_types=1);
namespace Slim\Psr7;
use InvalidArgumentException;
use Psr\Http\Message\UriInterface;
use function filter_var;
use function is_integer;
use function is_null;
use function is_object;
use function is_string;
use function ltrim;
use function method_exists;
use function preg_replace_callback;
use function rawurlencode;
use function str_replace;
use function strtolower;
use const FILTER_FLAG_IPV6;
use const FILTER_VALIDATE_IP;
class Uri implements UriInterface
{
public const SUPPORTED_SCHEMES = [
'' => null,
'http' => 80,
'https' => 443
];
/**
* Uri scheme (without "://" suffix)
*
* @var string
*/
protected $scheme = '';
/**
* @var string
*/
protected $user = '';
/**
* @var string
*/
protected $password = '';
/**
* @var string
*/
protected $host = '';
/**
* @var null|int
*/
protected $port;
/**
* @var string
*/
protected $path = '';
/**
* Uri query string (without "?" prefix)
*
* @var string
*/
protected $query = '';
/**
* Uri fragment string (without "#" prefix)
*
* @var string
*/
protected $fragment = '';
/**
* @param string $scheme Uri scheme.
* @param string $host Uri host.
* @param int $port Uri port number.
* @param string $path Uri path.
* @param string $query Uri query string.
* @param string $fragment Uri fragment.
* @param string $user Uri user.
* @param string $password Uri password.
*/
public function __construct(
string $scheme,
string $host,
?int $port = null,
string $path = '/',
string $query = '',
string $fragment = '',
string $user = '',
string $password = ''
) {
$this->scheme = $this->filterScheme($scheme);
$this->host = $this->filterHost($host);
$this->port = $this->filterPort($port);
$this->path = $this->filterPath($path);
$this->query = $this->filterQuery($query);
$this->fragment = $this->filterFragment($fragment);
$this->user = $user;
$this->password = $password;
}
/**
* {@inheritdoc}
*/
public function getScheme(): string
{
return $this->scheme;
}
/**
* {@inheritdoc}
*/
public function withScheme($scheme)
{
$scheme = $this->filterScheme($scheme);
$clone = clone $this;
$clone->scheme = $scheme;
return $clone;
}
/**
* Filter Uri scheme.
*
* @param mixed $scheme Raw Uri scheme.
*
* @return string
*
* @throws InvalidArgumentException If the Uri scheme is not a string.
* @throws InvalidArgumentException If Uri scheme is not exists in SUPPORTED_SCHEMES
*/
protected function filterScheme($scheme): string
{
if (!is_string($scheme)) {
throw new InvalidArgumentException('Uri scheme must be a string.');
}
$scheme = str_replace('://', '', strtolower($scheme));
if (!key_exists($scheme, static::SUPPORTED_SCHEMES)) {
throw new InvalidArgumentException(
'Uri scheme must be one of: "' . implode('", "', array_keys(static::SUPPORTED_SCHEMES)) . '"'
);
}
return $scheme;
}
/**
* {@inheritdoc}
*/
public function getAuthority(): string
{
$userInfo = $this->getUserInfo();
$host = $this->getHost();
$port = $this->getPort();
return ($userInfo !== '' ? $userInfo . '@' : '') . $host . ($port !== null ? ':' . $port : '');
}
/**
* {@inheritdoc}
*/
public function getUserInfo(): string
{
$info = $this->user;
if (isset($this->password) && $this->password !== '') {
$info .= ':' . $this->password;
}
return $info;
}
/**
* {@inheritdoc}
*/
public function withUserInfo($user, $password = null)
{
$clone = clone $this;
$clone->user = $this->filterUserInfo($user);
if ($clone->user !== '') {
$clone->password = $this->filterUserInfo($password);
} else {
$clone->password = '';
}
return $clone;
}
/**
* Filters the user info string.
*
* Returns the percent-encoded query string.
*
* @param string|null $info The raw uri query string.
*
* @return string
*/
protected function filterUserInfo(?string $info = null): string
{
if (!is_string($info)) {
return '';
}
$match = preg_replace_callback(
'/(?:[^a-zA-Z0-9_\-\.~!\$&\'\(\)\*\+,;=]+|%(?![A-Fa-f0-9]{2}))/u',
function ($match) {
return rawurlencode($match[0]);
},
$info
);
return is_string($match) ? $match : '';
}
/**
* {@inheritdoc}
*/
public function getHost(): string
{
return $this->host;
}
/**
* {@inheritdoc}
*/
public function withHost($host)
{
$clone = clone $this;
$clone->host = $this->filterHost($host);
return $clone;
}
/**
* Filter Uri host.
*
* If the supplied host is an IPv6 address, then it is converted to a reference
* as per RFC 2373.
*
* @param mixed $host The host to filter.
*
* @return string
*
* @throws InvalidArgumentException for invalid host names.
*/
protected function filterHost($host): string
{
if (is_object($host) && method_exists($host, '__toString')) {
$host = (string) $host;
}
if (!is_string($host)) {
throw new InvalidArgumentException('Uri host must be a string');
}
if (filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
$host = '[' . $host . ']';
}
return strtolower($host);
}
/**
* {@inheritdoc}
*/
public function getPort(): ?int
{
return $this->port && !$this->hasStandardPort() ? $this->port : null;
}
/**
* {@inheritdoc}
*/
public function withPort($port)
{
$port = $this->filterPort($port);
$clone = clone $this;
$clone->port = $port;
return $clone;
}
/**
* Does this Uri use a standard port?
*
* @return bool
*/
protected function hasStandardPort(): bool
{
return static::SUPPORTED_SCHEMES[$this->scheme] === $this->port;
}
/**
* Filter Uri port.
*
* @param null|int $port The Uri port number.
*
* @return null|int
*
* @throws InvalidArgumentException If the port is invalid.
*/
protected function filterPort($port): ?int
{
if (is_null($port) || (is_integer($port) && ($port >= 1 && $port <= 65535))) {
return $port;
}
throw new InvalidArgumentException('Uri port must be null or an integer between 1 and 65535 (inclusive)');
}
/**
* {@inheritdoc}
*/
public function getPath(): string
{
return $this->path;
}
/**
* {@inheritdoc}
*/
public function withPath($path)
{
if (!is_string($path)) {
throw new InvalidArgumentException('Uri path must be a string');
}
$clone = clone $this;
$clone->path = $this->filterPath($path);
return $clone;
}
/**
* Filter Uri path.
*
* This method percent-encodes all reserved characters in the provided path string.
* This method will NOT double-encode characters that are already percent-encoded.
*
* @param string $path The raw uri path.
*
* @return string The RFC 3986 percent-encoded uri path.
*
* @link http://www.faqs.org/rfcs/rfc3986.html
*/
protected function filterPath($path): string
{
$match = preg_replace_callback(
'/(?:[^a-zA-Z0-9_\-\.~:@&=\+\$,\/;%]+|%(?![A-Fa-f0-9]{2}))/',
function ($match) {
return rawurlencode($match[0]);
},
$path
);
return is_string($match) ? $match : '';
}
/**
* {@inheritdoc}
*/
public function getQuery(): string
{
return $this->query;
}
/**
* {@inheritdoc}
*/
public function withQuery($query)
{
$query = ltrim($this->filterQuery($query), '?');
$clone = clone $this;
$clone->query = $query;
return $clone;
}
/**
* Filters the query string of a URI.
*
* Returns the percent-encoded query string.
*
* @param mixed $query The raw uri query string.
*
* @return string
*/
protected function filterQuery($query): string
{
if (is_object($query) && method_exists($query, '__toString')) {
$query = (string) $query;
}
if (!is_string($query)) {
throw new InvalidArgumentException('Uri query must be a string.');
}
$match = preg_replace_callback(
'/(?:[^a-zA-Z0-9_\-\.~!\$&\'\(\)\*\+,;=%:@\/\?]+|%(?![A-Fa-f0-9]{2}))/',
function ($match) {
return rawurlencode($match[0]);
},
$query
);
return is_string($match) ? $match : '';
}
/**
* {@inheritdoc}
*/
public function getFragment(): string
{
return $this->fragment;
}
/**
* {@inheritdoc}
*/
public function withFragment($fragment)
{
$fragment = $this->filterFragment($fragment);
$clone = clone $this;
$clone->fragment = $fragment;
return $clone;
}
/**
* Filters fragment of a URI.
*
* Returns the percent-encoded fragment.
*
* @param mixed $fragment The raw uri query string.
*
* @return string
*/
protected function filterFragment($fragment): string
{
if (is_object($fragment) && method_exists($fragment, '__toString')) {
$fragment = (string) $fragment;
}
if (!is_string($fragment)) {
throw new InvalidArgumentException('Uri fragment must be a string.');
}
$fragment = ltrim($fragment, '#');
$match = preg_replace_callback(
'/(?:[^a-zA-Z0-9_\-\.~!\$&\'\(\)\*\+,;=%:@\/\?]+|%(?![A-Fa-f0-9]{2}))/',
function ($match) {
return rawurlencode($match[0]);
},
$fragment
);
return is_string($match) ? $match : '';
}
/**
* {@inheritdoc}
*/
public function __toString(): string
{
$scheme = $this->getScheme();
$authority = $this->getAuthority();
$path = $this->getPath();
$query = $this->getQuery();
$fragment = $this->getFragment();
if ($path !== '') {
if ($path[0] !== '/') {
if ($authority !== '') {
// If the path is rootless and an authority is present, the path MUST be prefixed by "/".
$path = '/' . $path;
}
} elseif (isset($path[1]) && $path[1] === '/') {
if ($authority === '') {
// If the path is starting with more than one "/" and no authority is present,
// the starting slashes MUST be reduced to one.
$path = '/' . ltrim($path, '/');
}
}
}
return ($scheme !== '' ? $scheme . ':' : '')
. ($authority !== '' ? '//' . $authority : '')
. $path
. ($query !== '' ? '?' . $query : '')
. ($fragment !== '' ? '#' . $fragment : '');
}
}