View.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 5.10.0

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View.php

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