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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\web;
use Yii;
use yii\base\Component;
use yii\base\InvalidConfigException;
use yii\caching\CacheInterface;
use yii\helpers\Url;
/**
* UrlManager handles HTTP request parsing and creation of URLs based on a set of rules.
*
* UrlManager is configured as an application component in [[\yii\base\Application]] by default.
* You can access that instance via `Yii::$app->urlManager`.
*
* You can modify its configuration by adding an array to your application config under `components`
* as it is shown in the following example:
*
* ```php
* 'urlManager' => [
* 'enablePrettyUrl' => true,
* 'rules' => [
* // your rules go here
* ],
* // ...
* ]
* ```
*
* Rules are classes implementing the [[UrlRuleInterface]], by default that is [[UrlRule]].
* For nesting rules, there is also a [[GroupUrlRule]] class.
*
* For more details and usage information on UrlManager, see the [guide article on routing](guide:runtime-routing).
*
* @property string $baseUrl The base URL that is used by [[createUrl()]] to prepend to created URLs.
* @property string $hostInfo The host info (e.g. `http://www.example.com`) that is used by
* [[createAbsoluteUrl()]] to prepend to created URLs.
* @property string $scriptUrl The entry script URL that is used by [[createUrl()]] to prepend to created
* URLs.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class UrlManager extends Component
{
/**
* @var bool whether to enable pretty URLs. Instead of putting all parameters in the query
* string part of a URL, pretty URLs allow using path info to represent some of the parameters
* and can thus produce more user-friendly URLs, such as "/news/Yii-is-released", instead of
* "/index.php?r=news%2Fview&id=100".
*/
public $enablePrettyUrl = false;
/**
* @var bool whether to enable strict parsing. If strict parsing is enabled, the incoming
* requested URL must match at least one of the [[rules]] in order to be treated as a valid request.
* Otherwise, the path info part of the request will be treated as the requested route.
* This property is used only when [[enablePrettyUrl]] is `true`.
*/
public $enableStrictParsing = false;
/**
* @var array the rules for creating and parsing URLs when [[enablePrettyUrl]] is `true`.
* This property is used only if [[enablePrettyUrl]] is `true`. Each element in the array
* is the configuration array for creating a single URL rule. The configuration will
* be merged with [[ruleConfig]] first before it is used for creating the rule object.
*
* A special shortcut format can be used if a rule only specifies [[UrlRule::pattern|pattern]]
* and [[UrlRule::route|route]]: `'pattern' => 'route'`. That is, instead of using a configuration
* array, one can use the key to represent the pattern and the value the corresponding route.
* For example, `'post/<id:\d+>' => 'post/view'`.
*
* For RESTful routing the mentioned shortcut format also allows you to specify the
* [[UrlRule::verb|HTTP verb]] that the rule should apply for.
* You can do that by prepending it to the pattern, separated by space.
* For example, `'PUT post/<id:\d+>' => 'post/update'`.
* You may specify multiple verbs by separating them with comma
* like this: `'POST,PUT post/index' => 'post/create'`.
* The supported verbs in the shortcut format are: GET, HEAD, POST, PUT, PATCH and DELETE.
* Note that [[UrlRule::mode|mode]] will be set to PARSING_ONLY when specifying verb in this way
* so you normally would not specify a verb for normal GET request.
*
* Here is an example configuration for RESTful CRUD controller:
*
* ```php
* [
* 'dashboard' => 'site/index',
*
* 'POST <controller:[\w-]+>' => '<controller>/create',
* '<controller:[\w-]+>s' => '<controller>/index',
*
* 'PUT <controller:[\w-]+>/<id:\d+>' => '<controller>/update',
* 'DELETE <controller:[\w-]+>/<id:\d+>' => '<controller>/delete',
* '<controller:[\w-]+>/<id:\d+>' => '<controller>/view',
* ];
* ```
*
* Note that if you modify this property after the UrlManager object is created, make sure
* you populate the array with rule objects instead of rule configurations.
*/
public $rules = [];
/**
* @var string the URL suffix used when [[enablePrettyUrl]] is `true`.
* For example, ".html" can be used so that the URL looks like pointing to a static HTML page.
* This property is used only if [[enablePrettyUrl]] is `true`.
*/
public $suffix;
/**
* @var bool whether to show entry script name in the constructed URL. Defaults to `true`.
* This property is used only if [[enablePrettyUrl]] is `true`.
*/
public $showScriptName = true;
/**
* @var string the GET parameter name for route. This property is used only if [[enablePrettyUrl]] is `false`.
*/
public $routeParam = 'r';
/**
* @var CacheInterface|string the cache object or the application component ID of the cache object.
* Compiled URL rules will be cached through this cache object, if it is available.
*
* After the UrlManager object is created, if you want to change this property,
* you should only assign it with a cache object.
* Set this property to `false` if you do not want to cache the URL rules.
*
* Cache entries are stored for the time set by [[\yii\caching\Cache::$defaultDuration|$defaultDuration]] in
* the cache configuration, which is unlimited by default. You may want to tune this value if your [[rules]]
* change frequently.
*/
public $cache = 'cache';
/**
* @var array the default configuration of URL rules. Individual rule configurations
* specified via [[rules]] will take precedence when the same property of the rule is configured.
*/
public $ruleConfig = ['class' => 'yii\web\UrlRule'];
/**
* @var UrlNormalizer|array|string|false the configuration for [[UrlNormalizer]] used by this UrlManager.
* The default value is `false`, which means normalization will be skipped.
* If you wish to enable URL normalization, you should configure this property manually.
* For example:
*
* ```php
* [
* 'class' => 'yii\web\UrlNormalizer',
* 'collapseSlashes' => true,
* 'normalizeTrailingSlash' => true,
* ]
* ```
*
* @since 2.0.10
*/
public $normalizer = false;
/**
* @var string the cache key for cached rules
* @since 2.0.8
*/
protected $cacheKey = __CLASS__;
private $_baseUrl;
private $_scriptUrl;
private $_hostInfo;
private $_ruleCache;
/**
* Initializes UrlManager.
*/
public function init()
{
parent::init();
if ($this->normalizer !== false) {
$this->normalizer = Yii::createObject($this->normalizer);
if (!$this->normalizer instanceof UrlNormalizer) {
throw new InvalidConfigException('`' . get_class($this) . '::normalizer` should be an instance of `' . UrlNormalizer::className() . '` or its DI compatible configuration.');
}
}
if (!$this->enablePrettyUrl) {
return;
}
if (is_string($this->cache)) {
$this->cache = Yii::$app->get($this->cache, false);
}
if (empty($this->rules)) {
return;
}
$this->rules = $this->buildRules($this->rules);
}
/**
* Adds additional URL rules.
*
* This method will call [[buildRules()]] to parse the given rule declarations and then append or insert
* them to the existing [[rules]].
*
* Note that if [[enablePrettyUrl]] is `false`, this method will do nothing.
*
* @param array $rules the new rules to be added. Each array element represents a single rule declaration.
* Please refer to [[rules]] for the acceptable rule format.
* @param bool $append whether to add the new rules by appending them to the end of the existing rules.
*/
public function addRules($rules, $append = true)
{
if (!$this->enablePrettyUrl) {
return;
}
$rules = $this->buildRules($rules);
if ($append) {
$this->rules = array_merge($this->rules, $rules);
} else {
$this->rules = array_merge($rules, $this->rules);
}
}
/**
* Builds URL rule objects from the given rule declarations.
*
* @param array $ruleDeclarations the rule declarations. Each array element represents a single rule declaration.
* Please refer to [[rules]] for the acceptable rule formats.
* @return UrlRuleInterface[] the rule objects built from the given rule declarations
* @throws InvalidConfigException if a rule declaration is invalid
*/
protected function buildRules($ruleDeclarations)
{
$builtRules = $this->getBuiltRulesFromCache($ruleDeclarations);
if ($builtRules !== false) {
return $builtRules;
}
$builtRules = [];
$verbs = 'GET|HEAD|POST|PUT|PATCH|DELETE|OPTIONS';
foreach ($ruleDeclarations as $key => $rule) {
if (is_string($rule)) {
$rule = ['route' => $rule];
if (preg_match("/^((?:($verbs),)*($verbs))\\s+(.*)$/", $key, $matches)) {
$rule['verb'] = explode(',', $matches[1]);
// rules that are not applicable for GET requests should not be used to create URLs
if (!in_array('GET', $rule['verb'], true)) {
$rule['mode'] = UrlRule::PARSING_ONLY;
}
$key = $matches[4];
}
$rule['pattern'] = $key;
}
if (is_array($rule)) {
$rule = Yii::createObject(array_merge($this->ruleConfig, $rule));
}
if (!$rule instanceof UrlRuleInterface) {
throw new InvalidConfigException('URL rule class must implement UrlRuleInterface.');
}
$builtRules[] = $rule;
}
$this->setBuiltRulesCache($ruleDeclarations, $builtRules);
return $builtRules;
}
/**
* Stores $builtRules to cache, using $rulesDeclaration as a part of cache key.
*
* @param array $ruleDeclarations the rule declarations. Each array element represents a single rule declaration.
* Please refer to [[rules]] for the acceptable rule formats.
* @param UrlRuleInterface[] $builtRules the rule objects built from the given rule declarations.
* @return bool whether the value is successfully stored into cache
* @since 2.0.14
*/
protected function setBuiltRulesCache($ruleDeclarations, $builtRules)
{
if (!$this->cache instanceof CacheInterface) {
return false;
}
return $this->cache->set([$this->cacheKey, $this->ruleConfig, $ruleDeclarations], $builtRules);
}
/**
* Provides the built URL rules that are associated with the $ruleDeclarations from cache.
*
* @param array $ruleDeclarations the rule declarations. Each array element represents a single rule declaration.
* Please refer to [[rules]] for the acceptable rule formats.
* @return UrlRuleInterface[]|false the rule objects built from the given rule declarations or boolean `false` when
* there are no cache items for this definition exists.
* @since 2.0.14
*/
protected function getBuiltRulesFromCache($ruleDeclarations)
{
if (!$this->cache instanceof CacheInterface) {
return false;
}
return $this->cache->get([$this->cacheKey, $this->ruleConfig, $ruleDeclarations]);
}
/**
* Parses the user request.
* @param Request $request the request component
* @return array|bool the route and the associated parameters. The latter is always empty
* if [[enablePrettyUrl]] is `false`. `false` is returned if the current request cannot be successfully parsed.
*/
public function parseRequest($request)
{
if ($this->enablePrettyUrl) {
/* @var $rule UrlRule */
foreach ($this->rules as $rule) {
$result = $rule->parseRequest($this, $request);
if (YII_DEBUG) {
Yii::debug([
'rule' => method_exists($rule, '__toString') ? $rule->__toString() : get_class($rule),
'match' => $result !== false,
'parent' => null,
], __METHOD__);
}
if ($result !== false) {
return $result;
}
}
if ($this->enableStrictParsing) {
return false;
}
Yii::debug('No matching URL rules. Using default URL parsing logic.', __METHOD__);
$suffix = (string) $this->suffix;
$pathInfo = $request->getPathInfo();
$normalized = false;
if ($this->normalizer !== false) {
$pathInfo = $this->normalizer->normalizePathInfo($pathInfo, $suffix, $normalized);
}
if ($suffix !== '' && $pathInfo !== '') {
$n = strlen($this->suffix);
if (substr_compare($pathInfo, $this->suffix, -$n, $n) === 0) {
$pathInfo = substr($pathInfo, 0, -$n);
if ($pathInfo === '') {
// suffix alone is not allowed
return false;
}
} else {
// suffix doesn't match
return false;
}
}
if ($normalized) {
// pathInfo was changed by normalizer - we need also normalize route
return $this->normalizer->normalizeRoute([$pathInfo, []]);
}
return [$pathInfo, []];
}
Yii::debug('Pretty URL not enabled. Using default URL parsing logic.', __METHOD__);
$route = $request->getQueryParam($this->routeParam, '');
if (is_array($route)) {
$route = '';
}
return [(string) $route, []];
}
/**
* Creates a URL using the given route and query parameters.
*
* You may specify the route as a string, e.g., `site/index`. You may also use an array
* if you want to specify additional query parameters for the URL being created. The
* array format must be:
*
* ```php
* // generates: /index.php?r=site%2Findex&param1=value1&param2=value2
* ['site/index', 'param1' => 'value1', 'param2' => 'value2']
* ```
*
* If you want to create a URL with an anchor, you can use the array format with a `#` parameter.
* For example,
*
* ```php
* // generates: /index.php?r=site%2Findex&param1=value1#name
* ['site/index', 'param1' => 'value1', '#' => 'name']
* ```
*
* The URL created is a relative one. Use [[createAbsoluteUrl()]] to create an absolute URL.
*
* Note that unlike [[\yii\helpers\Url::toRoute()]], this method always treats the given route
* as an absolute route.
*
* @param string|array $params use a string to represent a route (e.g. `site/index`),
* or an array to represent a route with query parameters (e.g. `['site/index', 'param1' => 'value1']`).
* @return string the created URL
*/
public function createUrl($params)
{
$params = (array) $params;
$anchor = isset($params['#']) ? '#' . $params['#'] : '';
unset($params['#'], $params[$this->routeParam]);
$route = trim($params[0], '/');
unset($params[0]);
$baseUrl = $this->showScriptName || !$this->enablePrettyUrl ? $this->getScriptUrl() : $this->getBaseUrl();
if ($this->enablePrettyUrl) {
$cacheKey = $route . '?';
foreach ($params as $key => $value) {
if ($value !== null) {
$cacheKey .= $key . '&';
}
}
$url = $this->getUrlFromCache($cacheKey, $route, $params);
if ($url === false) {
/* @var $rule UrlRule */
foreach ($this->rules as $rule) {
if (in_array($rule, $this->_ruleCache[$cacheKey], true)) {
// avoid redundant calls of `UrlRule::createUrl()` for rules checked in `getUrlFromCache()`
// @see https://github.com/yiisoft/yii2/issues/14094
continue;
}
$url = $rule->createUrl($this, $route, $params);
if ($this->canBeCached($rule)) {
$this->setRuleToCache($cacheKey, $rule);
}
if ($url !== false) {
break;
}
}
}
if ($url !== false) {
if (strpos($url, '://') !== false) {
if ($baseUrl !== '' && ($pos = strpos($url, '/', 8)) !== false) {
return substr($url, 0, $pos) . $baseUrl . substr($url, $pos) . $anchor;
}
return $url . $baseUrl . $anchor;
} elseif (strncmp($url, '//', 2) === 0) {
if ($baseUrl !== '' && ($pos = strpos($url, '/', 2)) !== false) {
return substr($url, 0, $pos) . $baseUrl . substr($url, $pos) . $anchor;
}
return $url . $baseUrl . $anchor;
}
$url = ltrim($url, '/');
return "$baseUrl/{$url}{$anchor}";
}
if ($this->suffix !== null) {
$route .= $this->suffix;
}
if (!empty($params) && ($query = http_build_query($params)) !== '') {
$route .= '?' . $query;
}
$route = ltrim($route, '/');
return "$baseUrl/{$route}{$anchor}";
}
$url = "$baseUrl?{$this->routeParam}=" . urlencode($route);
if (!empty($params) && ($query = http_build_query($params)) !== '') {
$url .= '&' . $query;
}
return $url . $anchor;
}
/**
* Returns the value indicating whether result of [[createUrl()]] of rule should be cached in internal cache.
*
* @param UrlRuleInterface $rule
* @return bool `true` if result should be cached, `false` if not.
* @since 2.0.12
* @see getUrlFromCache()
* @see setRuleToCache()
* @see UrlRule::getCreateUrlStatus()
*/
protected function canBeCached(UrlRuleInterface $rule)
{
return
// if rule does not provide info about create status, we cache it every time to prevent bugs like #13350
// @see https://github.com/yiisoft/yii2/pull/13350#discussion_r114873476
!method_exists($rule, 'getCreateUrlStatus') || ($status = $rule->getCreateUrlStatus()) === null
|| $status === UrlRule::CREATE_STATUS_SUCCESS
|| $status & UrlRule::CREATE_STATUS_PARAMS_MISMATCH;
}
/**
* Get URL from internal cache if exists.
* @param string $cacheKey generated cache key to store data.
* @param string $route the route (e.g. `site/index`).
* @param array $params rule params.
* @return bool|string the created URL
* @see createUrl()
* @since 2.0.8
*/
protected function getUrlFromCache($cacheKey, $route, $params)
{
if (!empty($this->_ruleCache[$cacheKey])) {
foreach ($this->_ruleCache[$cacheKey] as $rule) {
/* @var $rule UrlRule */
if (($url = $rule->createUrl($this, $route, $params)) !== false) {
return $url;
}
}
} else {
$this->_ruleCache[$cacheKey] = [];
}
return false;
}
/**
* Store rule (e.g. [[UrlRule]]) to internal cache.
* @param $cacheKey
* @param UrlRuleInterface $rule
* @since 2.0.8
*/
protected function setRuleToCache($cacheKey, UrlRuleInterface $rule)
{
$this->_ruleCache[$cacheKey][] = $rule;
}
/**
* Creates an absolute URL using the given route and query parameters.
*
* This method prepends the URL created by [[createUrl()]] with the [[hostInfo]].
*
* Note that unlike [[\yii\helpers\Url::toRoute()]], this method always treats the given route
* as an absolute route.
*
* @param string|array $params use a string to represent a route (e.g. `site/index`),
* or an array to represent a route with query parameters (e.g. `['site/index', 'param1' => 'value1']`).
* @param string|null $scheme the scheme to use for the URL (either `http`, `https` or empty string
* for protocol-relative URL).
* If not specified the scheme of the current request will be used.
* @return string the created URL
* @see createUrl()
*/
public function createAbsoluteUrl($params, $scheme = null)
{
$params = (array) $params;
$url = $this->createUrl($params);
if (strpos($url, '://') === false) {
$hostInfo = $this->getHostInfo();
if (strncmp($url, '//', 2) === 0) {
$url = substr($hostInfo, 0, strpos($hostInfo, '://')) . ':' . $url;
} else {
$url = $hostInfo . $url;
}
}
return Url::ensureScheme($url, $scheme);
}
/**
* Returns the base URL that is used by [[createUrl()]] to prepend to created URLs.
* It defaults to [[Request::baseUrl]].
* This is mainly used when [[enablePrettyUrl]] is `true` and [[showScriptName]] is `false`.
* @return string the base URL that is used by [[createUrl()]] to prepend to created URLs.
* @throws InvalidConfigException if running in console application and [[baseUrl]] is not configured.
*/
public function getBaseUrl()
{
if ($this->_baseUrl === null) {
$request = Yii::$app->getRequest();
if ($request instanceof Request) {
$this->_baseUrl = $request->getBaseUrl();
} else {
throw new InvalidConfigException('Please configure UrlManager::baseUrl correctly as you are running a console application.');
}
}
return $this->_baseUrl;
}
/**
* Sets the base URL that is used by [[createUrl()]] to prepend to created URLs.
* This is mainly used when [[enablePrettyUrl]] is `true` and [[showScriptName]] is `false`.
* @param string $value the base URL that is used by [[createUrl()]] to prepend to created URLs.
*/
public function setBaseUrl($value)
{
$this->_baseUrl = $value === null ? null : rtrim(Yii::getAlias($value), '/');
}
/**
* Returns the entry script URL that is used by [[createUrl()]] to prepend to created URLs.
* It defaults to [[Request::scriptUrl]].
* This is mainly used when [[enablePrettyUrl]] is `false` or [[showScriptName]] is `true`.
* @return string the entry script URL that is used by [[createUrl()]] to prepend to created URLs.
* @throws InvalidConfigException if running in console application and [[scriptUrl]] is not configured.
*/
public function getScriptUrl()
{
if ($this->_scriptUrl === null) {
$request = Yii::$app->getRequest();
if ($request instanceof Request) {
$this->_scriptUrl = $request->getScriptUrl();
} else {
throw new InvalidConfigException('Please configure UrlManager::scriptUrl correctly as you are running a console application.');
}
}
return $this->_scriptUrl;
}
/**
* Sets the entry script URL that is used by [[createUrl()]] to prepend to created URLs.
* This is mainly used when [[enablePrettyUrl]] is `false` or [[showScriptName]] is `true`.
* @param string $value the entry script URL that is used by [[createUrl()]] to prepend to created URLs.
*/
public function setScriptUrl($value)
{
$this->_scriptUrl = $value;
}
/**
* Returns the host info that is used by [[createAbsoluteUrl()]] to prepend to created URLs.
* @return string the host info (e.g. `http://www.example.com`) that is used by [[createAbsoluteUrl()]] to prepend to created URLs.
* @throws InvalidConfigException if running in console application and [[hostInfo]] is not configured.
*/
public function getHostInfo()
{
if ($this->_hostInfo === null) {
$request = Yii::$app->getRequest();
if ($request instanceof \yii\web\Request) {
$this->_hostInfo = $request->getHostInfo();
} else {
throw new InvalidConfigException('Please configure UrlManager::hostInfo correctly as you are running a console application.');
}
}
return $this->_hostInfo;
}
/**
* Sets the host info that is used by [[createAbsoluteUrl()]] to prepend to created URLs.
* @param string $value the host info (e.g. "http://www.example.com") that is used by [[createAbsoluteUrl()]] to prepend to created URLs.
*/
public function setHostInfo($value)
{
$this->_hostInfo = $value === null ? null : rtrim($value, '/');
}
}
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