View.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 5.2.0

matomo / app / core / View.php

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View.php

461 lines

1	<?php
2
3	/**
4	* Matomo - free/libre analytics platform
5	*
6	* @link https://matomo.org
7	* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
8	*/
9	namespace Piwik;
10
11	use Exception;
12	use Piwik\AssetManager\UIAssetCacheBuster;
13	use Piwik\Container\StaticContainer;
14	use Piwik\Plugins\CoreAdminHome\Controller;
15	use Piwik\Plugins\CorePluginsAdmin\CorePluginsAdmin;
16	use Piwik\View\ViewInterface;
17	use Piwik\View\SecurityPolicy;
18	use Matomo\Dependencies\Twig\Environment;
19	/**
20	* Transition for pre-Piwik 0.4.4
21	*/
22	if (!defined('PIWIK_USER_PATH')) {
23	define('PIWIK_USER_PATH', PIWIK_INCLUDE_PATH);
24	}
25	/**
26	* Encapsulates and manages a [Twig](http://twig.sensiolabs.org/) template.
27	*
28	* View lets you set properties that will be passed on to a Twig template.
29	* View will also set several properties that will be available in all Twig
30	* templates, including:
31	*
32	* - currentModule: The value of the module query parameter.
33	* - currentAction: The value of the action query parameter.
34	* - userLogin: The current user login name.
35	* - sites: List of site data for every site the current user has at least
36	* view access for.
37	* - url: The current URL (sanitized).
38	* - token_auth: The current user's token auth.
39	* - userHasSomeAdminAccess: True if the user has admin access to at least
40	* one site, false if otherwise.
41	* - userIsSuperUser: True if the user is the superuser, false if otherwise.
42	* - latest_version_available: The latest version of Piwik available.
43	* - isWidget: The value of the 'widget' query parameter.
44	* - show_autocompleter: Whether the site selector should be shown or not.
45	* - loginModule: The name of the currently used authentication module.
46	* - isInternetEnabled: Whether the matomo server is allowed to connect to
47	* external networks.
48	*
49	* ### Template Naming Convention
50	*
51	* Template files should be named after the controller method they are used in.
52	* If they are used in more than one controller method or are included by another
53	* template, they should describe the output they generate and be prefixed with
54	* an underscore, eg, _dataTable.twig.
55	*
56	* ### Twig
57	*
58	* Twig templates must exist in the templates folder in a plugin's root
59	* folder.
60	*
61	* The following filters are available to twig templates:
62	*
63	* - translate: Outputs internationalized text using a translation token, eg,
64	* `{{ 'General_Date'\|translate }}`. sprintf parameters can be passed
65	* to the filter.
66	* - urlRewriteWithParameters: Modifies the current query string with the given
67	* set of parameters, eg,
68	*
69	* {{ {'module':'MyPlugin', 'action':'index'} \| urlRewriteWithParameters }}
70	*
71	* - sumTime: Pretty formats an number of seconds.
72	* - money: Formats a numerical value as a monetary value using the currency
73	* of the supplied site (second arg is site ID).
74	* eg, `{{ 23\|money(site.idsite)\|raw }}
75	* - truncate: Truncates the text to certain length (determined by first arg.)
76	* eg, `{{ myReallyLongText\|truncate(80) }}`
77	* - implode: Calls `implode`.
78	* - ucwords: Calls `ucwords`.
79	*
80	* The following functions are available to twig templates:
81	*
82	* - linkTo: Modifies the current query string with the given set of parameters,
83	* eg `{{ linkTo({'module':'MyPlugin', 'action':'index'}) }}`.
84	* - sparkline: Outputs a sparkline image HTML element using the sparkline image
85	* src link. eg, `{{ sparkline(sparklineUrl) }}`.
86	* - postEvent: Posts an event that allows event observers to add text to a string
87	* which is outputted in the template, eg, `{{ postEvent('MyPlugin.event') }}`
88	* - isPluginLoaded: Returns true if the supplied plugin is loaded, false if otherwise.
89	* `{% if isPluginLoaded('Goals') %}...{% endif %}`
90	* - areAdsForProfessionalServicesEnabled: Returns true if it is ok to show some advertising in the UI for providers of Professional Support for Piwik (from Piwik 2.16.0)
91	* - isMultiServerEnvironment: Returns true if Piwik is used on more than one server (since Piwik 2.16.1)
92	*
93	* ### Examples
94	*
95	* Basic usage
96	*
97	* // a controller method
98	* public function myView()
99	* {
100	* $view = new View("@MyPlugin/myView");
101	* $view->property1 = "a view property";
102	* $view->property2 = "another view property";
103	* return $view->render();
104	* }
105	*
106	*
107	* @api
108	*/
109	class View implements ViewInterface
110	{
111	private $template = '';
112	/**
113	* Instance
114	* @var Environment
115	*/
116	private $twig;
117	protected $templateVars = array();
118	private $contentType = 'text/html; charset=utf-8';
119	private $xFrameOptions = null;
120	private $enableCacheBuster = \true;
121	private $useStrictReferrerPolicy = \true;
122	/**
123	* Can be disabled to not send headers when rendering a view. This can be useful if heaps of views are being
124	* rendered during one request to possibly prevent a segmentation fault see eg #15307 . It should not be disabled
125	* for a main view, but could be disabled for views that are being rendered eg during a twig event as a "subview" which
126	* is part of the "main view".
127	* @var bool
128	*/
129	public $sendHeadersWhenRendering = \true;
130	/**
131	* Constructor.
132	*
133	* @param string $templateFile The template file to load. Must be in the following format:
134	* `"@MyPlugin/templateFileName"`. Note the absence of .twig
135	* from the end of the name.
136	*/
137	public function __construct($templateFile)
138	{
139	$templateExt = '.twig';
140	if (substr($templateFile, -strlen($templateExt)) !== $templateExt) {
141	$templateFile .= $templateExt;
142	}
143	$this->template = $templateFile;
144	$this->initializeTwig();
145	$this->piwik_version = \Piwik\Version::VERSION;
146	$this->userLogin = \Piwik\Piwik::getCurrentUserLogin();
147	$this->isSuperUser = \Piwik\Access::getInstance()->hasSuperUserAccess();
148	// following is used in ajaxMacros called macro (showMoreHelp as passed in other templates) - requestErrorDiv
149	$isGeneralSettingsAdminEnabled = Controller::isGeneralSettingsAdminEnabled();
150	$isPluginsAdminEnabled = CorePluginsAdmin::isPluginsAdminEnabled();
151	// simplify template usage
152	$this->showMoreFaqInfo = $this->isSuperUser && ($isGeneralSettingsAdminEnabled \|\| $isPluginsAdminEnabled);
153	try {
154	$this->piwikUrl = \Piwik\SettingsPiwik::getPiwikUrl();
155	} catch (Exception $ex) {
156	// pass (occurs when DB cannot be connected to, perhaps piwik URL cache should be stored in config file...)
157	}
158	$this->userRequiresPasswordConfirmation = \Piwik\Piwik::doesUserRequirePasswordConfirmation(\Piwik\Piwik::getCurrentUserLogin());
159	}
160	/**
161	* Disables the cache buster (adding of ?cb=...) to JavaScript and stylesheet files
162	*/
163	public function disableCacheBuster()
164	{
165	$this->enableCacheBuster = \false;
166	}
167	/**
168	* Returns the template filename.
169	*
170	* @return string
171	*/
172	public function getTemplateFile()
173	{
174	return $this->template;
175	}
176	/**
177	* Returns the variables to bind to the template when rendering.
178	*
179	* @param array $override Template variable override values. Mainly useful
180	* when including View templates in other templates.
181	* @return array
182	*/
183	public function getTemplateVars($override = array())
184	{
185	return $override + $this->templateVars;
186	}
187	/**
188	* Directly assigns a variable to the view script.
189	* Variable names may not be prefixed with '_'.
190	*
191	* @param string $key The variable name.
192	* @param mixed $val The variable value.
193	*/
194	public function __set($key, $val)
195	{
196	$this->templateVars[$key] = $val;
197	}
198	/**
199	* Retrieves an assigned variable.
200	* Variable names may not be prefixed with '_'.
201	*
202	* @param string $key The variable name.
203	* @return mixed The variable value.
204	*/
205	public function &__get($key)
206	{
207	return $this->templateVars[$key];
208	}
209	/**
210	* Returns true if a template variable has been set or not.
211	*
212	* @param string $name The name of the template variable.
213	* @return bool
214	*/
215	public function __isset($name)
216	{
217	return isset($this->templateVars[$name]);
218	}
219	/**
220	* Unsets a template variable.
221	*
222	* @param string $name The name of the template variable.
223	*/
224	public function __unset($name)
225	{
226	unset($this->templateVars[$name]);
227	}
228	private function initializeTwig()
229	{
230	$this->twig = StaticContainer::get(\Piwik\Twig::class)->getTwigEnvironment();
231	}
232	/**
233	* Renders the current view. Also sends the stored 'Content-Type' HTML header.
234	* See {@link setContentType()}.
235	*
236	* @return string Generated template.
237	*/
238	public function render()
239	{
240	try {
241	$this->currentModule = \Piwik\Piwik::getModule();
242	$this->currentAction = \Piwik\Piwik::getAction();
243	$this->url = \Piwik\Common::sanitizeInputValue(\Piwik\Url::getCurrentUrl());
244	$this->token_auth = \Piwik\Piwik::getCurrentUserTokenAuth();
245	$this->userHasSomeAdminAccess = \Piwik\Piwik::isUserHasSomeAdminAccess();
246	$this->userIsAnonymous = \Piwik\Piwik::isUserIsAnonymous();
247	$this->userIsSuperUser = \Piwik\Piwik::hasUserSuperUserAccess();
248	$this->latest_version_available = \Piwik\UpdateCheck::isNewestVersionAvailable();
249	$this->showUpdateNotificationToUser = !\Piwik\SettingsPiwik::isShowUpdateNotificationToSuperUsersOnlyEnabled() \|\| \Piwik\Piwik::hasUserSuperUserAccess();
250	$this->disableLink = \Piwik\Common::getRequestVar('disableLink', 0, 'int');
251	$this->isWidget = \Piwik\Common::getRequestVar('widget', 0, 'int');
252	$this->isMultiServerEnvironment = \Piwik\SettingsPiwik::isMultiServerEnvironment();
253	$this->isInternetEnabled = \Piwik\SettingsPiwik::isInternetEnabled();
254	$this->shouldPropagateTokenAuth = $this->shouldPropagateTokenAuthInAjaxRequests();
255	$this->isAutoUpdateEnabled = \Piwik\SettingsPiwik::isAutoUpdateEnabled();
256	$piwikAds = StaticContainer::get('Piwik\\ProfessionalServices\\Advertising');
257	$this->areAdsForProfessionalServicesEnabled = $piwikAds->areAdsForProfessionalServicesEnabled();
258	if (\Piwik\Development::isEnabled()) {
259	$cacheBuster = rand(0, 10000);
260	} else {
261	$cacheBuster = UIAssetCacheBuster::getInstance()->piwikVersionBasedCacheBuster();
262	}
263	$this->cacheBuster = $cacheBuster;
264	$this->loginModule = \Piwik\Piwik::getLoginPluginName();
265	} catch (Exception $e) {
266	\Piwik\Log::debug($e);
267	// can fail, for example at installation (no plugin loaded yet)
268	}
269	if ($this->sendHeadersWhenRendering) {
270	\Piwik\ProxyHttp::overrideCacheControlHeaders('no-store');
271	\Piwik\Common::sendHeader('Content-Type: ' . $this->contentType);
272	// always sending this header, sometimes empty, to ensure that Dashboard embed loads
273	// - when calling sendHeader() multiple times, the last one prevails
274	if (!empty($this->xFrameOptions)) {
275	\Piwik\Common::sendHeader('X-Frame-Options: ' . (string) $this->xFrameOptions);
276	}
277	// don't send Referer-Header for outgoing links
278	if (!empty($this->useStrictReferrerPolicy)) {
279	\Piwik\Common::sendHeader('Referrer-Policy: same-origin');
280	} else {
281	// always send explicit default header
282	\Piwik\Common::sendHeader('Referrer-Policy: no-referrer-when-downgrade');
283	}
284	// this will be an empty string if CSP is disabled
285	$cspHeader = StaticContainer::get(SecurityPolicy::class)->createHeaderString();
286	if ('' !== $cspHeader) {
287	\Piwik\Common::sendHeader($cspHeader);
288	}
289	}
290	return $this->renderTwigTemplate();
291	}
292	/**
293	* @internal
294	* @ignore
295	* @return Environment
296	*/
297	public function getTwig()
298	{
299	return $this->twig;
300	}
301	protected function renderTwigTemplate()
302	{
303	$output = $this->twig->render($this->getTemplateFile(), $this->getTemplateVars());
304	if ($this->enableCacheBuster) {
305	$output = $this->applyFilterCacheBuster($output);
306	}
307	$helper = new \Piwik\Theme();
308	$output = $helper->rewriteAssetsPathToTheme($output);
309	return $output;
310	}
311	protected function applyFilterCacheBuster($output)
312	{
313	$cacheBuster = UIAssetCacheBuster::getInstance();
314	$cache = \Piwik\Cache::getTransientCache();
315	$cssCacheBusterId = $cache->fetch('cssCacheBusterId');
316	if (empty($cssCacheBusterId)) {
317	$assetManager = \Piwik\AssetManager::getInstance();
318	$stylesheet = $assetManager->getMergedStylesheetAsset();
319	if ($stylesheet->exists()) {
320	$content = $stylesheet->getContent();
321	} else {
322	$content = $assetManager->getMergedStylesheet()->getContent();
323	}
324	$cssCacheBusterId = $cacheBuster->md5BasedCacheBuster($content);
325	$cache->save('cssCacheBusterId', $cssCacheBusterId);
326	}
327	$tagJs = 'cb=' . ($this->cacheBuster ?? $cacheBuster->piwikVersionBasedCacheBuster());
328	$tagCss = 'cb=' . $cssCacheBusterId;
329	$pattern = array(
330	'~<script type=[\'"]text/javascript[\'"] src=[\'"]([^\'"]+)[\'"]>~',
331	'~<script src=[\'"]([^\'"]+)[\'"] type=[\'"]text/javascript[\'"]>~',
332	'~<script type=[\'"]text/javascript[\'"] src=[\'"]([^\'"?]*\\?[^\'"]+)[\'"] defer>~',
333	'~<script type=[\'"]text/javascript[\'"] src=[\'"]([^\'"?]+)[\'"] defer>~',
334	'~<link rel=[\'"]stylesheet[\'"] type=[\'"]text/css[\'"] href=[\'"]([^\'"]+)[\'"] ?/?>~',
335	// removes the double ?cb= tag
336	'~(src\|href)=\\"index.php\\?module=([A-Za-z0-9_]+)&action=([A-Za-z0-9_]+)\\?cb=~',
337	);
338	$replace = array('<script type="text/javascript" src="$1?' . $tagJs . '">', '<script type="text/javascript" src="$1?' . $tagJs . '">', '<script type="text/javascript" src="$1&' . $tagJs . '" defer>', '<script type="text/javascript" src="$1?' . $tagJs . '" defer>', '<link rel="stylesheet" type="text/css" href="$1?' . $tagCss . '" />', '$1="index.php?module=$2&action=$3&cb=');
339	return preg_replace($pattern, $replace, $output);
340	}
341	/**
342	* Set stored value used in the Content-Type HTTP header field. The header is
343	* set just before rendering.
344	*
345	* @param string $contentType
346	*/
347	public function setContentType($contentType)
348	{
349	$this->contentType = $contentType;
350	}
351	/**
352	* Set X-Frame-Options field in the HTTP response. The header is set just
353	* before rendering.
354	*
355	* _Note: setting this allows you to make sure the View cannot be
356	* embedded in iframes. Learn more [here](https://developer.mozilla.org/en-US/docs/HTTP/X-Frame-Options)._
357	*
358	* @param string $option ('deny' or 'sameorigin')
359	*/
360	public function setXFrameOptions($option = 'deny')
361	{
362	if ($option === 'deny' \|\| $option === 'sameorigin') {
363	$this->xFrameOptions = $option;
364	}
365	if ($option == 'allow') {
366	$this->xFrameOptions = null;
367	}
368	}
369	/**
370	* Add form to view
371	*
372	* @param QuickForm2 $form
373	* @ignore
374	*/
375	public function addForm(\Piwik\QuickForm2 $form)
376	{
377	// assign array with form data
378	$this->assign('form_data', $form->getFormData());
379	$this->assign('element_list', $form->getElementList());
380	}
381	/**
382	* Assign value to a variable for use in a template
383	* @param string\|array $var
384	* @param mixed $value
385	* @ignore
386	*/
387	public function assign($var, $value = null)
388	{
389	if (is_string($var)) {
390	$this->{$var} = $value;
391	} elseif (is_array($var)) {
392	foreach ($var as $key => $value) {
393	$this->{$key} = $value;
394	}
395	}
396	}
397	/**
398	* Clear compiled Twig templates
399	* @ignore
400	*/
401	public static function clearCompiledTemplates()
402	{
403	$enable = StaticContainer::get('view.clearcompiledtemplates.enable');
404	if ($enable) {
405	// some high performance systems that run many Matomo instances may never want to clear this template cache
406	// if they use eg a blue/green deployment
407	$templatesCompiledPath = StaticContainer::get('path.tmp.templates');
408	\Piwik\Filesystem::unlinkRecursive($templatesCompiledPath, \false);
409	}
410	}
411	/**
412	* Creates a View for and then renders the single report template.
413	*
414	* Can be used for pages that display only one report to avoid having to create
415	* a new template.
416	*
417	* @param string $title The report title.
418	* @param string $reportHtml The report body HTML.
419	* @return string\|void The report contents if `$fetch` is true.
420	*/
421	public static function singleReport($title, $reportHtml)
422	{
423	$view = new \Piwik\View('@CoreHome/_singleReport');
424	$view->title = $title;
425	$view->report = $reportHtml;
426	return $view->render();
427	}
428	private function shouldPropagateTokenAuthInAjaxRequests()
429	{
430	$generalConfig = \Piwik\Config::getInstance()->General;
431	return \Piwik\Common::getRequestVar('module', \false) == 'Widgetize' \|\| $generalConfig['enable_framed_pages'] == '1' \|\| $this->validTokenAuthInUrl();
432	}
433	/**
434	* @return bool
435	* @throws Exception
436	*/
437	private function validTokenAuthInUrl()
438	{
439	$tokenAuth = \Piwik\Common::getRequestVar('token_auth', '', 'string', $_GET);
440	return $tokenAuth && $tokenAuth === \Piwik\Piwik::getCurrentUserTokenAuth();
441	}
442	/**
443	* Returns whether a strict Referrer-Policy header will be sent. Generally this should be set to 'true'.
444	*
445	* @return bool
446	*/
447	public function getUseStrictReferrerPolicy()
448	{
449	return $this->useStrictReferrerPolicy;
450	}
451	/**
452	* Sets whether a strict Referrer-Policy header will be sent (if not, nothing is sent).
453	*
454	* @param bool $useStrictReferrerPolicy
455	*/
456	public function setUseStrictReferrerPolicy($useStrictReferrerPolicy)
457	{
458	$this->useStrictReferrerPolicy = $useStrictReferrerPolicy;
459	}
460	}
461