Added path filter

config/install/path_watcher.settings.yml

@@ -7,3 +7,4 @@ skip_xml_http_request: false
 methods:
   GET: true
 content_type: '#text/html#'
+paths: { }

config/schema/path_watcher.schema.yml

@@ -29,3 +29,9 @@ path_watcher.settings:
     content_type:
       type: string
       label: 'Content type (regex)'
+    paths:
+      type: sequence
+      label: 'Path filters (regex)'
+      sequence:
+        type: string
+        label: 'Path filter (regex)'

path_watcher.install

@@ -22,3 +22,14 @@ function path_watcher_update_9000(): void {
   $data['content_type'] = '#text/html#';
   $config->setData($data)->save();
 }
+
+
+/**
+ * Populate the new config with default values.
+ */
+function path_watcher_update_9001(): void {
+  \Drupal::configFactory()
+    ->getEditable(PathWatcherSettingsForm::CONFIG_NAME)
+    ->set('paths', [])
+    ->save();
+}

src/Form/PathWatcherSettingsForm.php

@@ -114,7 +114,7 @@ class PathWatcherSettingsForm extends ConfigFormBase {
     ];
     $form['advanced']['methods'] = [
       '#type' => 'checkboxes',
-      '#title' => $this->t('Methods'),
+      '#title' => $this->t('Processed methods'),
       '#options' => [
         Request::METHOD_HEAD => Request::METHOD_HEAD,
         Request::METHOD_GET => Request::METHOD_GET,
@@ -132,22 +132,67 @@ class PathWatcherSettingsForm extends ConfigFormBase {
     ];
     $form['advanced']['content_type'] = [
       '#type' => 'textfield',
-      '#title' => $this->t('Content type (regex)'),
+      '#title' => $this->t('Content type filter (regex)'),
       '#default_value' => $config['content_type'],
       '#placeholder' => '#text/html#',
       '#description' => $this->t('Leave empty to skip content type check.'),
     ];
+    $paths = $config['paths'];
+    $form['advanced']['paths'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Path filters (regex)'),
+      '#default_value' => $paths ? implode(PHP_EOL, $paths) : '',
+      '#placeholder' => "#^/oauth/#\n#^/some-api/#",
+      '#description' => $this->t('One regular expression per line. Leave empty to skip path check.'),
+      '#rows' => max(min(5, count($paths) + 1), 2),
+    ];
     return parent::buildForm($form, $form_state);
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    if ($form_state->getErrors()) {
+      return;
+    }
+
+    // Validate content type filter.
+    $content_type = trim($form_state->getValue('content_type'));
+    @preg_match($content_type, '');
+    if (preg_last_error() !== PREG_NO_ERROR) {
+      $form_state->setErrorByName('content_type', $this->t('Invalid regular expression: @error', [
+        '@error' => preg_last_error_msg(),
+      ]));
+    }
+    // Validate path filters.
+    $paths = array_unique(array_filter(array_map('trim', explode(PHP_EOL, $form_state->getValue('paths')))));
+    foreach ($paths as $path) {
+      @preg_match($path, '');
+      if (preg_last_error() !== PREG_NO_ERROR) {
+        $form_state->setErrorByName('paths', $this->t('Regular expression "@path" is invalid: @error', [
+          '@path' => $path,
+          '@error' => preg_last_error_msg(),
+        ]));
+        break;
+      }
+    }
+    // Set values if no errors.
+    if (!$form_state->getErrors()) {
+      $form_state
+        ->setValue('content_type', $content_type)
+        ->setValue('paths', $paths);
+    }
+  }
+
   /**
    * {@inheritdoc}
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
     $values = $form_state->cleanValues()->getValues();
     $values['skip_roles'] = Checkboxes::getCheckedCheckboxes($values['skip_roles']);
-    $values['methods'] = array_fill_keys(Checkboxes::getCheckedCheckboxes($values['methods']), TRUE);
     $values['skip_usernames'] = array_unique(array_filter(array_map('trim', explode(PHP_EOL, $values['skip_usernames']))));
+    $values['methods'] = array_fill_keys(Checkboxes::getCheckedCheckboxes($values['methods']), TRUE);
 
     $this->config(static::CONFIG_NAME)
       ->setData($values)

src/PathWatcherManager.php

@@ -71,6 +71,14 @@ class PathWatcherManager implements PathWatcherManagerInterface {
     if ($config['skip_usernames'] && in_array($this->currentUser->getAccountName(), $config['skip_usernames'])) {
       return FALSE;
     }
+    if ($config['paths']) {
+      $path_info = $request->getPathInfo();
+      foreach ($config['paths'] as $path) {
+        if (preg_match($path, $path_info)) {
+          return FALSE;
+        }
+      }
+    }
     return TRUE;
   }