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<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\Exception\MalformedUriException;
use Psr\Http\Message\UriInterface;
/**
* PSR-7 URI implementation.
*
* @author Michael Dowling
* @author Tobias Schultze
* @author Matthew Weier O'Phinney
*/
class Uri implements UriInterface, \JsonSerializable
{
/**
* Absolute http and https URIs require a host per RFC 7230 Section 2.7
* but in generic URIs the host can be empty. So for http(s) URIs
* we apply this default host when no host is given yet to form a
* valid URI.
*/
private const HTTP_DEFAULT_HOST = 'localhost';
private const DEFAULT_PORTS = [
'http' => 80,
'https' => 443,
'ftp' => 21,
'gopher' => 70,
'nntp' => 119,
'news' => 119,
'telnet' => 23,
'tn3270' => 23,
'imap' => 143,
'pop' => 110,
'ldap' => 389,
];
private const QUERY_SEPARATORS_REPLACEMENT = ['=' => '%3D', '&' => '%26', '+' => '%2B'];
/** @var string Uri scheme. */
private $scheme = '';
/** @var string Uri user info. */
private $userInfo = '';
/** @var string Uri host. */
private $host = '';
/** @var int|null Uri port. */
private $port;
/** @var string Uri path. */
private $path = '';
/** @var string Uri query string. */
private $query = '';
/** @var string Uri fragment. */
private $fragment = '';
public function __construct(string $uri = '')
{
if ($uri !== '') {
$parts = self::parse($uri);
if ($parts === false) {
throw new MalformedUriException("Unable to parse URI: $uri");
}
try {
$this->applyParts($parts);
} catch (MalformedUriException $e) {
throw $e;
} catch (\InvalidArgumentException $e) {
throw new MalformedUriException($e->getMessage(), 0, $e);
}
}
}
/**
* UTF-8 aware \parse_url() replacement.
*
* The internal function produces broken output for non ASCII domain names
* (IDN) when used with locales other than "C".
*
* On the other hand, cURL understands IDN correctly only when UTF-8 locale
* is configured ("C.UTF-8", "en_US.UTF-8", etc.).
*
* @see https://bugs.php.net/bug.php?id=52923
* @see https://www.php.net/manual/en/function.parse-url.php#114817
* @see https://curl.haxx.se/libcurl/c/CURLOPT_URL.html#ENCODING
*
* @return array|false
*/
private static function parse(string $url)
{
if (self::isPathNoSchemeReference($url)) {
return self::parsePathNoSchemeReference($url);
}
// Preserve bracketed IPv6 literals before encoding, including dotted IPv4 tails.
$prefix = '';
$ipv6Prefix = preg_match('%\A([0-9A-Za-z+.-]+://\[[^\]\x00-\x20/?#@]+\])(.*)\z%s', $url, $matches);
if ($ipv6Prefix === false) {
return false;
}
if ($ipv6Prefix === 1) {
/** @var array{0:string, 1:string, 2:string} $matches */
$suffix = $matches[2];
if ($suffix !== '' && strpos(':/?#', $suffix[0]) === false) {
return false;
}
$prefix = $matches[1];
$url = $suffix;
}
/** @var string|null */
$encodedUrl = preg_replace_callback(
'%[^:/@?&=#]+%usD',
static function ($matches) {
return urlencode($matches[0]);
},
$url
);
if ($encodedUrl === null) {
return false;
}
$result = parse_url($prefix.$encodedUrl);
if ($result === false) {
return false;
}
return array_map('urldecode', $result);
}
private static function isPathNoSchemeReference(string $url): bool
{
if ($url === '' || $url[0] === '/' || $url[0] === '?' || $url[0] === '#') {
return false;
}
$firstSegment = substr($url, 0, strcspn($url, '/?#'));
return strpos($firstSegment, ':') === false;
}
/**
* @return array{path: string, query?: string, fragment?: string}
*/
private static function parsePathNoSchemeReference(string $url): array
{
$parts = [];
if (false !== ($fragmentPosition = strpos($url, '#'))) {
$parts['fragment'] = substr($url, $fragmentPosition + 1);
$url = substr($url, 0, $fragmentPosition);
}
if (false !== ($queryPosition = strpos($url, '?'))) {
$parts['query'] = substr($url, $queryPosition + 1);
$url = substr($url, 0, $queryPosition);
}
$parts['path'] = $url;
return $parts;
}
public function __toString(): string
{
return self::composeComponents(
$this->scheme,
$this->getAuthority(),
$this->path,
$this->query,
$this->fragment
);
}
/**
* Composes a URI reference string from its various components.
*
* Usually this method does not need to be called manually but instead is used indirectly via
* `Psr\Http\Message\UriInterface::__toString`.
*
* PSR-7 UriInterface treats an empty component the same as a missing component as
* getQuery(), getFragment() etc. always return a string. This explains the slight
* difference to RFC 3986 Section 5.3.
*
* Another adjustment is that the authority separator is added even when the authority is missing/empty
* for the "file" scheme. This is because PHP stream functions like `file_get_contents` only work with
* `file:///myfile` but not with `file:/myfile` although they are equivalent according to RFC 3986. But
* `file:///` is the more common syntax for the file scheme anyway (Chrome for example redirects to
* that format).
*
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-5.3
*/
public static function composeComponents(?string $scheme, ?string $authority, string $path, ?string $query, ?string $fragment): string
{
$uri = '';
// weak type checks to also accept null until we can add scalar type hints
if ($scheme != '') {
$uri .= $scheme.':';
}
if ($authority != '' || $scheme === 'file') {
$uri .= '//'.$authority;
}
if ($authority != '' && $path != '' && $path[0] != '/') {
$path = '/'.$path;
}
$uri .= $path;
if ($query != '') {
$uri .= '?'.$query;
}
if ($fragment != '') {
$uri .= '#'.$fragment;
}
return $uri;
}
/**
* Whether the URI has the default port of the current scheme.
*
* `Psr\Http\Message\UriInterface::getPort` may return null or the standard port. This method can be used
* independently of the implementation.
*/
public static function isDefaultPort(UriInterface $uri): bool
{
return $uri->getPort() === null
|| (isset(self::DEFAULT_PORTS[$uri->getScheme()]) && $uri->getPort() === self::DEFAULT_PORTS[$uri->getScheme()]);
}
/**
* Whether the URI is absolute, i.e. it has a scheme.
*
* An instance of UriInterface can either be an absolute URI or a relative reference. This method returns true
* if it is the former. An absolute URI has a scheme. A relative reference is used to express a URI relative
* to another URI, the base URI. Relative references can be divided into several forms:
* - network-path references, e.g. '//example.com/path'
* - absolute-path references, e.g. '/path'
* - relative-path references, e.g. 'subpath'
*
* @see Uri::isNetworkPathReference
* @see Uri::isAbsolutePathReference
* @see Uri::isRelativePathReference
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-4
*/
public static function isAbsolute(UriInterface $uri): bool
{
return $uri->getScheme() !== '';
}
/**
* Whether the URI is a network-path reference.
*
* A relative reference that begins with two slash characters is termed an network-path reference.
*
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-4.2
*/
public static function isNetworkPathReference(UriInterface $uri): bool
{
return $uri->getScheme() === '' && $uri->getAuthority() !== '';
}
/**
* Whether the URI is a absolute-path reference.
*
* A relative reference that begins with a single slash character is termed an absolute-path reference.
*
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-4.2
*/
public static function isAbsolutePathReference(UriInterface $uri): bool
{
return $uri->getScheme() === ''
&& $uri->getAuthority() === ''
&& isset($uri->getPath()[0])
&& $uri->getPath()[0] === '/';
}
/**
* Whether the URI is a relative-path reference.
*
* A relative reference that does not begin with a slash character is termed a relative-path reference.
*
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-4.2
*/
public static function isRelativePathReference(UriInterface $uri): bool
{
return $uri->getScheme() === ''
&& $uri->getAuthority() === ''
&& (!isset($uri->getPath()[0]) || $uri->getPath()[0] !== '/');
}
/**
* Whether the URI is a same-document reference.
*
* A same-document reference refers to a URI that is, aside from its fragment
* component, identical to the base URI. When no base URI is given, only an empty
* URI reference (apart from its fragment) is considered a same-document reference.
*
* @param UriInterface $uri The URI to check
* @param UriInterface|null $base An optional base URI to compare against
*
* @see https://datatracker.ietf.org/doc/html/rfc3986#section-4.4
*/
public static function isSameDocumentReference(UriInterface $uri, ?UriInterface $base = null): bool
{
if ($base !== null) {
$uri = UriResolver::resolve($base, $uri);
return ($uri->getScheme() === $base->getScheme())
&& ($uri->getAuthority() === $base->getAuthority())
&& ($uri->getPath() === $base->getPath())
&& ($uri->getQuery() === $base->getQuery());
}
return $uri->getScheme() === '' && $uri->getAuthority() === '' && $uri->getPath() === '' && $uri->getQuery() === '';
}
/**
* Creates a new URI with a specific query string value removed.
*
* Any existing query string values that exactly match the provided key are
* removed.
*
* @param UriInterface $uri URI to use as a base.
* @param string $key Query string key to remove.
*/
public static function withoutQueryValue(UriInterface $uri, string $key): UriInterface
{
$result = self::getFilteredQueryString($uri, [$key]);
return $uri->withQuery(implode('&', $result));
}
/**
* Creates a new URI with a specific query string value.
*
* Any existing query string values that exactly match the provided key are
* removed and replaced with the given key value pair.
*
* A value of null will set the query string key without a value, e.g. "key"
* instead of "key=value".
*
* @param UriInterface $uri URI to use as a base.
* @param string $key Key to set.
* @param string|null $value Value to set
*/
public static function withQueryValue(UriInterface $uri, string $key, ?string $value): UriInterface
{
$result = self::getFilteredQueryString($uri, [$key]);
$result[] = self::generateQueryString($key, $value);
return $uri->withQuery(implode('&', $result));
}
/**
* Creates a new URI with multiple specific query string values.
*
* It has the same behavior as withQueryValue() but for an associative array of key => value.
*
* @param UriInterface $uri URI to use as a base.
* @param (string|null)[] $keyValueArray Associative array of key and values
*/
public static function withQueryValues(UriInterface $uri, array $keyValueArray): UriInterface
{
$result = self::getFilteredQueryString($uri, array_keys($keyValueArray));
foreach ($keyValueArray as $key => $value) {
$result[] = self::generateQueryString((string) $key, $value !== null ? self::stringifyQueryValue($value) : null);
}
return $uri->withQuery(implode('&', $result));
}
/**
* Stringifies a non-null query value, deprecating non-string values that
* guzzlehttp/psr7 3.0 will reject. Non-finite floats are normalized to the
* strings PHP coerces them to, as implicit coercion of NAN emits a warning
* on PHP 8.5.
*
* @param mixed $value
*/
private static function stringifyQueryValue($value): string
{
if (!is_string($value)) {
\trigger_deprecation(
'guzzlehttp/psr7',
'2.12',
'Passing %s to Uri::withQueryValues() is deprecated; cast it to a string. guzzlehttp/psr7 3.0 will only accept string or null query values.',
\gettype($value)
);
if (is_float($value) && !is_finite($value)) {
return is_nan($value) ? 'NAN' : ($value > 0 ? 'INF' : '-INF');
}
}
return (string) $value;
}
/**
* Creates a URI from a hash of `parse_url` components.
*
* @see https://www.php.net/manual/en/function.parse-url.php
*
* @throws MalformedUriException If the components do not form a valid URI.
*/
public static function fromParts(array $parts): UriInterface
{
$uri = new self();
try {
$uri->applyParts($parts);
$uri->validateState();
} catch (MalformedUriException $e) {
throw $e;
} catch (\InvalidArgumentException $e) {
throw new MalformedUriException($e->getMessage(), 0, $e);
}
return $uri;
}
/**
* @throws \InvalidArgumentException If the host is invalid.
*
* @internal
*/
public static function assertValidHost(string $host): void
{
if ($host === '') {
return;
}
// Reject control characters and URI authority delimiters so getHost()
// cannot disagree with the on-wire authority.
$invalidHost = preg_match('/[\x00-\x20\x7F\/\?#@\\\\]/', $host);
if ($invalidHost === false) {
throw new \RuntimeException('Unable to validate URI host: '.preg_last_error_msg());
}
if ($invalidHost === 1) {
throw new \InvalidArgumentException(sprintf('Invalid host: "%s"', $host));
}
if (strpos($host, '[') !== false || strpos($host, ']') !== false) {
if ($host[0] !== '[' || substr($host, -1) !== ']') {
throw new \InvalidArgumentException(sprintf('Invalid host: "%s"', $host));
}
return;
}
if (strpos($host, ':') !== false) {
throw new \InvalidArgumentException(sprintf('Invalid host: "%s"', $host));
}
}
public function getScheme(): string
{
return $this->scheme;
}
public function getAuthority(): string
{
$authority = $this->host;
if ($this->userInfo !== '') {
$authority = $this->userInfo.'@'.$authority;
}
if ($this->port !== null) {
$authority .= ':'.$this->port;
}
return $authority;
}
public function getUserInfo(): string
{
return $this->userInfo;
}
public function getHost(): string
{
return $this->host;
}
public function getPort(): ?int
{
return $this->port;
}
public function getPath(): string
{
return $this->path;
}
public function getQuery(): string
{
return $this->query;
}
public function getFragment(): string
{
return $this->fragment;
}
public function withScheme($scheme): UriInterface
{
$scheme = $this->filterScheme($scheme);
if ($this->scheme === $scheme) {
return $this;
}
$new = clone $this;
$new->scheme = $scheme;
$new->removeDefaultPort();
$new->validateState();
return $new;
}
public function withUserInfo($user, $password = null): UriInterface
{
$info = $this->filterUserInfoComponent($user);
if ($password !== null) {
$info .= ':'.$this->filterUserInfoComponent($password);
}
if ($this->userInfo === $info) {
return $this;
}
$new = clone $this;
$new->userInfo = $info;
$new->validateState();
return $new;
}
public function withHost($host): UriInterface
{
$host = $this->filterHost($host);
if ($this->host === $host) {
return $this;
}
$new = clone $this;
$new->host = $host;
$new->validateState();
return $new;
}
public function withPort($port): UriInterface
{
if ($port !== null && !\is_int($port)) {
\trigger_deprecation(
'guzzlehttp/psr7',
'2.11',
'Passing %s to UriInterface::withPort() is deprecated; guzzlehttp/psr7 3.0 requires int|null.',
\get_debug_type($port)
);
}
$port = $this->filterPort($port);
if ($this->port === $port) {
return $this;
}
$new = clone $this;
$new->port = $port;
$new->removeDefaultPort();
$new->validateState();
return $new;
}
public function withPath($path): UriInterface
{
$path = $this->filterPath($path);
if ($this->path === $path) {
return $this;
}
$new = clone $this;
$new->path = $path;
$new->validateState();
return $new;
}
public function withQuery($query): UriInterface
{
$query = $this->filterQueryAndFragment($query);
if ($this->query === $query) {
return $this;
}
$new = clone $this;
$new->query = $query;
return $new;
}
public function withFragment($fragment): UriInterface
{
$fragment = $this->filterQueryAndFragment($fragment);
if ($this->fragment === $fragment) {
return $this;
}
$new = clone $this;
$new->fragment = $fragment;
return $new;
}
public function jsonSerialize(): string
{
return $this->__toString();
}
/**
* Apply parse_url parts to a URI.
*
* @param array $parts Array of parse_url parts to apply.
*/
private function applyParts(array $parts): void
{
$this->scheme = isset($parts['scheme'])
? $this->filterScheme($parts['scheme'])
: '';
$this->userInfo = isset($parts['user'])
? $this->filterUserInfoComponent($parts['user'])
: '';
$this->host = isset($parts['host'])
? $this->filterHost($parts['host'])
: '';
$this->port = isset($parts['port'])
? $this->filterPort($parts['port'])
: null;
$this->path = isset($parts['path'])
? $this->filterPath($parts['path'])
: '';
$this->query = isset($parts['query'])
? $this->filterQueryAndFragment($parts['query'])
: '';
$this->fragment = isset($parts['fragment'])
? $this->filterQueryAndFragment($parts['fragment'])
: '';
if (isset($parts['pass'])) {
$this->userInfo .= ':'.$this->filterUserInfoComponent($parts['pass']);
}
$this->removeDefaultPort();
}
/**
* @param mixed $scheme
*
* @throws \InvalidArgumentException If the scheme is invalid.
*/
private function filterScheme($scheme): string
{
if (!is_string($scheme)) {
throw new \InvalidArgumentException('Scheme must be a string');
}
$scheme = \strtr($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz');
if ($scheme !== '' && !preg_match('/^[a-z][a-z0-9.+-]*$/D', $scheme)) {
\trigger_deprecation(
'guzzlehttp/psr7',
'2.11',
'Passing "%s" as a URI scheme is deprecated; guzzlehttp/psr7 3.0 requires URI schemes to match RFC 3986 syntax and begin with a letter.',
$scheme
);
}
return $scheme;
}
/**
* @param mixed $component
*
* @throws \InvalidArgumentException If the user info is invalid.
*/
private function filterUserInfoComponent($component): string
{
if (!is_string($component)) {
throw new \InvalidArgumentException('User info must be a string');
}
return $this->filterComponent(
'/(?:[^%'.Rfc3986::CHAR_UNRESERVED.Rfc3986::CHAR_SUB_DELIMS.']+|%(?![A-Fa-f0-9]{2}))/',
$component,
'Unable to filter URI user info'
);
}
/**
* @param mixed $host
*
* @throws \InvalidArgumentException If the host is invalid.
*/
private function filterHost($host): string
{
if (!is_string($host)) {
throw new \InvalidArgumentException('Host must be a string');
}
$host = \strtr($host, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz');
self::assertValidHost($host);
return $host;
}
/**
* @param mixed $port
*
* @throws \InvalidArgumentException If the port is invalid.
*/
private function filterPort($port): ?int
{
if ($port === null) {
return null;
}
$port = (int) $port;
if (0 > $port || 0xFFFF < $port) {
throw new \InvalidArgumentException(
sprintf('Invalid port: %d. Must be between 0 and 65535', $port)
);
}
return $port;
}
/**
* @param (string|int)[] $keys
*
* @return string[]
*/
private static function getFilteredQueryString(UriInterface $uri, array $keys): array
{
$current = $uri->getQuery();
if ($current === '') {
return [];
}
$decodedKeys = array_map(function ($k): string {
return rawurldecode((string) $k);
}, $keys);
return array_filter(explode('&', $current), function ($part) use ($decodedKeys) {
return !in_array(rawurldecode(explode('=', $part)[0]), $decodedKeys, true);
});
}
private static function generateQueryString(string $key, ?string $value): string
{
// Query string separators ("=", "&") and literal plus signs ("+") within the
// key or value need to be encoded
// (while preventing double-encoding) before setting the query string. All other
// chars that need percent-encoding will be encoded by withQuery().
$queryString = strtr($key, self::QUERY_SEPARATORS_REPLACEMENT);
if ($value !== null) {
$queryString .= '='.strtr($value, self::QUERY_SEPARATORS_REPLACEMENT);
}
return $queryString;
}
private function removeDefaultPort(): void
{
if ($this->port !== null && self::isDefaultPort($this)) {
$this->port = null;
}
}
/**
* Filters the path of a URI
*
* @param mixed $path
*
* @throws \InvalidArgumentException If the path is invalid.
*/
private function filterPath($path): string
{
if (!is_string($path)) {
throw new \InvalidArgumentException('Path must be a string');
}
return $this->filterComponent(
'/(?:[^'.Rfc3986::CHAR_UNRESERVED.Rfc3986::CHAR_SUB_DELIMS.'%:@\/]++|%(?![A-Fa-f0-9]{2}))/',
$path,
'Unable to filter URI path'
);
}
/**
* Filters the query string or fragment of a URI.
*
* @param mixed $str
*
* @throws \InvalidArgumentException If the query or fragment is invalid.
*/
private function filterQueryAndFragment($str): string
{
if (!is_string($str)) {
throw new \InvalidArgumentException('Query and fragment must be a string');
}
return $this->filterComponent(
'/(?:[^'.Rfc3986::CHAR_UNRESERVED.Rfc3986::CHAR_SUB_DELIMS.'%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/',
$str,
'Unable to filter URI query or fragment'
);
}
private function filterComponent(string $pattern, string $component, string $context): string
{
$filtered = preg_replace_callback($pattern, [$this, 'rawurlencodeMatchZero'], $component);
if ($filtered === null) {
throw new \RuntimeException($context.': '.preg_last_error_msg());
}
return $filtered;
}
private function rawurlencodeMatchZero(array $match): string
{
return rawurlencode($match[0]);
}
private function validateState(): void
{
if ($this->host === '' && ($this->scheme === 'http' || $this->scheme === 'https')) {
$this->host = self::HTTP_DEFAULT_HOST;
}
if ($this->getAuthority() === '') {
if (0 === strpos($this->path, '//')) {
throw new MalformedUriException('The path of a URI without an authority must not start with two slashes "//"');
}
if ($this->scheme === '' && false !== strpos(explode('/', $this->path, 2)[0], ':')) {
throw new MalformedUriException('A relative URI must not have a path beginning with a segment containing a colon');
}
}
}
}