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<?php
/**
* League.Uri (https://uri.thephpleague.com)
*
* (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace League\Uri;
use JsonSerializable;
use League\Uri\Contracts\UriAccess;
use League\Uri\Contracts\UriInterface;
use League\Uri\Exceptions\MissingFeature;
use League\Uri\Idna\Converter as IdnaConverter;
use League\Uri\IPv4\Converter as IPv4Converter;
use League\Uri\IPv6\Converter as IPv6Converter;
use Psr\Http\Message\UriFactoryInterface;
use Psr\Http\Message\UriInterface as Psr7UriInterface;
use Stringable;
use function array_pop;
use function array_reduce;
use function count;
use function end;
use function explode;
use function implode;
use function in_array;
use function preg_match;
use function rawurldecode;
use function str_repeat;
use function str_replace;
use function strpos;
use function substr;
/**
* @phpstan-import-type ComponentMap from UriInterface
*/
class BaseUri implements Stringable, JsonSerializable, UriAccess
{
/** @var array<string,int> */
final protected const WHATWG_SPECIAL_SCHEMES = ['ftp' => 1, 'http' => 1, 'https' => 1, 'ws' => 1, 'wss' => 1];
/** @var array<string,int> */
final protected const DOT_SEGMENTS = ['.' => 1, '..' => 1];
protected readonly Psr7UriInterface|UriInterface|null $origin;
protected readonly ?string $nullValue;
/**
* @param UriFactoryInterface|null $uriFactory Deprecated, will be removed in the next major release
*/
final protected function __construct(
protected readonly Psr7UriInterface|UriInterface $uri,
protected readonly ?UriFactoryInterface $uriFactory
) {
$this->nullValue = $this->uri instanceof Psr7UriInterface ? '' : null;
$this->origin = $this->computeOrigin($this->uri, $this->nullValue);
}
public static function from(Stringable|string $uri, ?UriFactoryInterface $uriFactory = null): static
{
return new static(static::formatHost(static::filterUri($uri, $uriFactory)), $uriFactory);
}
public function withUriFactory(UriFactoryInterface $uriFactory): static
{
return new static($this->uri, $uriFactory);
}
public function withoutUriFactory(): static
{
return new static($this->uri, null);
}
public function getUri(): Psr7UriInterface|UriInterface
{
return $this->uri;
}
public function getUriString(): string
{
return $this->uri->__toString();
}
public function jsonSerialize(): string
{
return $this->uri->__toString();
}
public function __toString(): string
{
return $this->uri->__toString();
}
public function origin(): ?self
{
return match (null) {
$this->origin => null,
default => new self($this->origin, $this->uriFactory),
};
}
/**
* Returns the Unix filesystem path.
*
* The method will return null if a scheme is present and is not the `file` scheme
*/
public function unixPath(): ?string
{
return match ($this->uri->getScheme()) {
'file', $this->nullValue => rawurldecode($this->uri->getPath()),
default => null,
};
}
/**
* Returns the Windows filesystem path.
*
* The method will return null if a scheme is present and is not the `file` scheme
*/
public function windowsPath(): ?string
{
static $regexpWindowsPath = ',^(?<root>[a-zA-Z]:),';
if (!in_array($this->uri->getScheme(), ['file', $this->nullValue], true)) {
return null;
}
$originalPath = $this->uri->getPath();
$path = $originalPath;
if ('/' === ($path[0] ?? '')) {
$path = substr($path, 1);
}
if (1 === preg_match($regexpWindowsPath, $path, $matches)) {
$root = $matches['root'];
$path = substr($path, strlen($root));
return $root.str_replace('/', '\\', rawurldecode($path));
}
$host = $this->uri->getHost();
return match ($this->nullValue) {
$host => str_replace('/', '\\', rawurldecode($originalPath)),
default => '\\\\'.$host.'\\'.str_replace('/', '\\', rawurldecode($path)),
};
}
/**
* Returns a string representation of a File URI according to RFC8089.
*
* The method will return null if the URI scheme is not the `file` scheme
*/
public function toRfc8089(): ?string
{
$path = $this->uri->getPath();
return match (true) {
'file' !== $this->uri->getScheme() => null,
in_array($this->uri->getAuthority(), ['', null, 'localhost'], true) => 'file:'.match (true) {
'' === $path,
'/' === $path[0] => $path,
default => '/'.$path,
},
default => (string) $this->uri,
};
}
/**
* Tells whether the `file` scheme base URI represents a local file.
*/
public function isLocalFile(): bool
{
return match (true) {
'file' !== $this->uri->getScheme() => false,
in_array($this->uri->getAuthority(), ['', null, 'localhost'], true) => true,
default => false,
};
}
/**
* Tells whether the URI is opaque or not.
*
* A URI is opaque if and only if it is absolute
* and does not has an authority path.
*/
public function isOpaque(): bool
{
return $this->nullValue === $this->uri->getAuthority()
&& $this->isAbsolute();
}
/**
* Tells whether two URI do not share the same origin.
*/
public function isCrossOrigin(Stringable|string $uri): bool
{
if (null === $this->origin) {
return true;
}
$uri = static::filterUri($uri);
$uriOrigin = $this->computeOrigin($uri, $uri instanceof Psr7UriInterface ? '' : null);
return match(true) {
null === $uriOrigin,
$uriOrigin->__toString() !== $this->origin->__toString() => true,
default => false,
};
}
/**
* Tells whether the URI is absolute.
*/
public function isAbsolute(): bool
{
return $this->nullValue !== $this->uri->getScheme();
}
/**
* Tells whether the URI is a network path.
*/
public function isNetworkPath(): bool
{
return $this->nullValue === $this->uri->getScheme()
&& $this->nullValue !== $this->uri->getAuthority();
}
/**
* Tells whether the URI is an absolute path.
*/
public function isAbsolutePath(): bool
{
return $this->nullValue === $this->uri->getScheme()
&& $this->nullValue === $this->uri->getAuthority()
&& '/' === ($this->uri->getPath()[0] ?? '');
}
/**
* Tells whether the URI is a relative path.
*/
public function isRelativePath(): bool
{
return $this->nullValue === $this->uri->getScheme()
&& $this->nullValue === $this->uri->getAuthority()
&& '/' !== ($this->uri->getPath()[0] ?? '');
}
/**
* Tells whether both URI refers to the same document.
*/
public function isSameDocument(Stringable|string $uri): bool
{
return $this->normalize(static::filterUri($uri)) === $this->normalize($this->uri);
}
/**
* Tells whether the URI contains an Internationalized Domain Name (IDN).
*/
public function hasIdn(): bool
{
return IdnaConverter::isIdn($this->uri->getHost());
}
/**
* Tells whether the URI contains an IPv4 regardless if it is mapped or native.
*/
public function hasIPv4(): bool
{
return IPv4Converter::fromEnvironment()->isIpv4($this->uri->getHost());
}
/**
* Resolves a URI against a base URI using RFC3986 rules.
*
* This method MUST retain the state of the submitted URI instance, and return
* a URI instance of the same type that contains the applied modifications.
*
* This method MUST be transparent when dealing with error and exceptions.
* It MUST not alter or silence them apart from validating its own parameters.
*/
public function resolve(Stringable|string $uri): static
{
$uri = static::formatHost(static::filterUri($uri, $this->uriFactory));
$null = $uri instanceof Psr7UriInterface ? '' : null;
if ($null !== $uri->getScheme()) {
return new static(
$uri->withPath(static::removeDotSegments($uri->getPath())),
$this->uriFactory
);
}
if ($null !== $uri->getAuthority()) {
return new static(
$uri
->withScheme($this->uri->getScheme())
->withPath(static::removeDotSegments($uri->getPath())),
$this->uriFactory
);
}
$user = $null;
$pass = null;
$userInfo = $this->uri->getUserInfo();
if (null !== $userInfo) {
[$user, $pass] = explode(':', $userInfo, 2) + [1 => null];
}
[$path, $query] = $this->resolvePathAndQuery($uri);
return new static(
$uri
->withPath($this->removeDotSegments($path))
->withQuery($query)
->withHost($this->uri->getHost())
->withPort($this->uri->getPort())
->withUserInfo($user, $pass)
->withScheme($this->uri->getScheme()),
$this->uriFactory
);
}
/**
* Relativize a URI according to a base URI.
*
* This method MUST retain the state of the submitted URI instance, and return
* a URI instance of the same type that contains the applied modifications.
*
* This method MUST be transparent when dealing with error and exceptions.
* It MUST not alter of silence them apart from validating its own parameters.
*/
public function relativize(Stringable|string $uri): static
{
$uri = static::formatHost(static::filterUri($uri, $this->uriFactory));
if ($this->canNotBeRelativize($uri)) {
return new static($uri, $this->uriFactory);
}
$null = $uri instanceof Psr7UriInterface ? '' : null;
$uri = $uri->withScheme($null)->withPort(null)->withUserInfo($null)->withHost($null);
$targetPath = $uri->getPath();
$basePath = $this->uri->getPath();
return new static(
match (true) {
$targetPath !== $basePath => $uri->withPath(static::relativizePath($targetPath, $basePath)),
static::componentEquals('query', $uri) => $uri->withPath('')->withQuery($null),
$null === $uri->getQuery() => $uri->withPath(static::formatPathWithEmptyBaseQuery($targetPath)),
default => $uri->withPath(''),
},
$this->uriFactory
);
}
final protected function computeOrigin(Psr7UriInterface|UriInterface $uri, ?string $nullValue): Psr7UriInterface|UriInterface|null
{
$scheme = $uri->getScheme();
if ('blob' !== $scheme) {
return match (true) {
isset(static::WHATWG_SPECIAL_SCHEMES[$scheme]) => $uri
->withFragment($nullValue)
->withQuery($nullValue)
->withPath('')
->withUserInfo($nullValue),
default => null,
};
}
$components = UriString::parse($uri->getPath());
if ($uri instanceof Psr7UriInterface) {
/** @var ComponentMap $components */
$components = array_map(fn ($component) => null === $component ? '' : $component, $components);
}
return match (true) {
null !== $components['scheme'] && isset(static::WHATWG_SPECIAL_SCHEMES[strtolower($components['scheme'])]) => $uri
->withFragment($nullValue)
->withQuery($nullValue)
->withPath('')
->withHost($components['host'])
->withPort($components['port'])
->withScheme($components['scheme'])
->withUserInfo($nullValue),
default => null,
};
}
/**
* Normalizes a URI for comparison; this URI string representation is not suitable for usage as per RFC guidelines.
*/
final protected function normalize(Psr7UriInterface|UriInterface $uri): string
{
$null = $uri instanceof Psr7UriInterface ? '' : null;
$path = $uri->getPath();
if ('/' === ($path[0] ?? '') || '' !== $uri->getScheme().$uri->getAuthority()) {
$path = $this->removeDotSegments($path);
}
$query = $uri->getQuery();
$pairs = null === $query ? [] : explode('&', $query);
sort($pairs);
static $regexpEncodedChars = ',%(2[D|E]|3\d|4[1-9|A-F]|5[\d|AF]|6[1-9|A-F]|7[\d|E]),i';
$value = preg_replace_callback(
$regexpEncodedChars,
static fn (array $matches): string => rawurldecode($matches[0]),
[$path, implode('&', $pairs)]
) ?? ['', $null];
[$path, $query] = $value + ['', $null];
if ($null !== $uri->getAuthority() && '' === $path) {
$path = '/';
}
return $uri
->withHost(Uri::fromComponents(['host' => $uri->getHost()])->getHost())
->withPath($path)
->withQuery([] === $pairs ? $null : $query)
->withFragment($null)
->__toString();
}
/**
* Input URI normalization to allow Stringable and string URI.
*/
final protected static function filterUri(Stringable|string $uri, UriFactoryInterface|null $uriFactory = null): Psr7UriInterface|UriInterface
{
return match (true) {
$uri instanceof UriAccess => $uri->getUri(),
$uri instanceof Psr7UriInterface,
$uri instanceof UriInterface => $uri,
$uriFactory instanceof UriFactoryInterface => $uriFactory->createUri((string) $uri),
default => Uri::new($uri),
};
}
/**
* Remove dot segments from the URI path as per RFC specification.
*/
final protected function removeDotSegments(string $path): string
{
if (!str_contains($path, '.')) {
return $path;
}
$reducer = function (array $carry, string $segment): array {
if ('..' === $segment) {
array_pop($carry);
return $carry;
}
if (!isset(static::DOT_SEGMENTS[$segment])) {
$carry[] = $segment;
}
return $carry;
};
$oldSegments = explode('/', $path);
$newPath = implode('/', array_reduce($oldSegments, $reducer(...), []));
if (isset(static::DOT_SEGMENTS[end($oldSegments)])) {
$newPath .= '/';
}
// @codeCoverageIgnoreStart
// added because some PSR-7 implementations do not respect RFC3986
if (str_starts_with($path, '/') && !str_starts_with($newPath, '/')) {
return '/'.$newPath;
}
// @codeCoverageIgnoreEnd
return $newPath;
}
/**
* Resolves an URI path and query component.
*
* @return array{0:string, 1:string|null}
*/
final protected function resolvePathAndQuery(Psr7UriInterface|UriInterface $uri): array
{
$targetPath = $uri->getPath();
$null = $uri instanceof Psr7UriInterface ? '' : null;
if (str_starts_with($targetPath, '/')) {
return [$targetPath, $uri->getQuery()];
}
if ('' === $targetPath) {
$targetQuery = $uri->getQuery();
if ($null === $targetQuery) {
$targetQuery = $this->uri->getQuery();
}
$targetPath = $this->uri->getPath();
//@codeCoverageIgnoreStart
//because some PSR-7 Uri implementations allow this RFC3986 forbidden construction
if (null !== $this->uri->getAuthority() && !str_starts_with($targetPath, '/')) {
$targetPath = '/'.$targetPath;
}
//@codeCoverageIgnoreEnd
return [$targetPath, $targetQuery];
}
$basePath = $this->uri->getPath();
if (null !== $this->uri->getAuthority() && '' === $basePath) {
$targetPath = '/'.$targetPath;
}
if ('' !== $basePath) {
$segments = explode('/', $basePath);
array_pop($segments);
if ([] !== $segments) {
$targetPath = implode('/', $segments).'/'.$targetPath;
}
}
return [$targetPath, $uri->getQuery()];
}
/**
* Tells whether the component value from both URI object equals.
*
* @pqram 'query'|'authority'|'scheme' $property
*/
final protected function componentEquals(string $property, Psr7UriInterface|UriInterface $uri): bool
{
$getComponent = function (string $property, Psr7UriInterface|UriInterface $uri): ?string {
$component = match ($property) {
'query' => $uri->getQuery(),
'authority' => $uri->getAuthority(),
default => $uri->getScheme(),
};
return match (true) {
$uri instanceof UriInterface, '' !== $component => $component,
default => null,
};
};
return $getComponent($property, $uri) === $getComponent($property, $this->uri);
}
/**
* Filter the URI object.
*/
final protected static function formatHost(Psr7UriInterface|UriInterface $uri): Psr7UriInterface|UriInterface
{
$host = $uri->getHost();
try {
$converted = IPv4Converter::fromEnvironment()->toDecimal($host);
} catch (MissingFeature) {
$converted = null;
}
if (false === filter_var($converted, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
$converted = IPv6Converter::compress($host);
}
return match (true) {
null !== $converted => $uri->withHost($converted),
'' === $host,
$uri instanceof UriInterface => $uri,
default => $uri->withHost((string) Uri::fromComponents(['host' => $host])->getHost()),
};
}
/**
* Tells whether the submitted URI object can be relativized.
*/
final protected function canNotBeRelativize(Psr7UriInterface|UriInterface $uri): bool
{
return !static::componentEquals('scheme', $uri)
|| !static::componentEquals('authority', $uri)
|| static::from($uri)->isRelativePath();
}
/**
* Relatives the URI for an authority-less target URI.
*/
final protected static function relativizePath(string $path, string $basePath): string
{
$baseSegments = static::getSegments($basePath);
$targetSegments = static::getSegments($path);
$targetBasename = array_pop($targetSegments);
array_pop($baseSegments);
foreach ($baseSegments as $offset => $segment) {
if (!isset($targetSegments[$offset]) || $segment !== $targetSegments[$offset]) {
break;
}
unset($baseSegments[$offset], $targetSegments[$offset]);
}
$targetSegments[] = $targetBasename;
return static::formatPath(
str_repeat('../', count($baseSegments)).implode('/', $targetSegments),
$basePath
);
}
/**
* returns the path segments.
*
* @return string[]
*/
final protected static function getSegments(string $path): array
{
return explode('/', match (true) {
'' === $path,
'/' !== $path[0] => $path,
default => substr($path, 1),
});
}
/**
* Formatting the path to keep a valid URI.
*/
final protected static function formatPath(string $path, string $basePath): string
{
$colonPosition = strpos($path, ':');
$slashPosition = strpos($path, '/');
return match (true) {
'' === $path => match (true) {
'' === $basePath,
'/' === $basePath => $basePath,
default => './',
},
false === $colonPosition => $path,
false === $slashPosition,
$colonPosition < $slashPosition => "./$path",
default => $path,
};
}
/**
* Formatting the path to keep a resolvable URI.
*/
final protected static function formatPathWithEmptyBaseQuery(string $path): string
{
$targetSegments = static::getSegments($path);
/** @var string $basename */
$basename = end($targetSegments);
return '' === $basename ? './' : $basename;
}
}