Changeset 39563

Timestamp:

12/11/2016 09:25:40 PM (8 years ago)

Author:

rachelbaker

Message:

REST API: Allow schema sanitization_callback to be set to null to bypass fallback sanitization functions.

The logic in WP_REST_Request->sanitize_params() added in [39091] did not account for null or false being the sanitization_callback preventing overriding rest_parse_request_arg(). This fixes that oversight, allowing the built in sanitization function to be bypassed. See #38593.

Props kkoppenhaver, rachelbaker, jnylen0.
Fixes #39042.

Location:

trunk

Files:

• src/wp-includes/rest-api/class-wp-rest-request.php (modified) (1 diff)
• tests/phpunit/tests/rest-api/rest-request.php (modified) (1 diff)

trunk/src/wp-includes/rest-api/class-wp-rest-request.php

@@ -819 +819 @@
             }
             foreach ( $this->params[ $type ] as $key => $value ) {
-                // if no sanitize_callback was specified, default to rest_parse_request_arg
-                // if a type was specified in the args.
-                if ( ! isset( $attributes['args'][ $key ]['sanitize_callback'] ) && ! empty( $attributes['args'][ $key ]['type'] ) ) {
-                    $attributes['args'][ $key ]['sanitize_callback'] = 'rest_parse_request_arg';
-                }
-                // Check if this param has a sanitize_callback added.
-                if ( ! isset( $attributes['args'][ $key ] ) || empty( $attributes['args'][ $key ]['sanitize_callback'] ) ) {
+                if ( ! isset( $attributes['args'][ $key ] ) ) {
                     continue;
                 }
-
-                $sanitized_value = call_user_func( $attributes['args'][ $key ]['sanitize_callback'], $value, $this, $key );
+                $param_args = $attributes['args'][ $key ];
+
+                // If the arg has a type but no sanitize_callback attribute, default to rest_parse_request_arg.
+                if ( ! array_key_exists( 'sanitize_callback', $param_args ) && ! empty( $param_args['type'] ) ) {
+                    $param_args['sanitize_callback'] = 'rest_parse_request_arg';
+                }
+                // If there's still no sanitize_callback, nothing to do here.
+                if ( empty( $param_args['sanitize_callback'] ) ) {
+                    continue;
+                }
+
+                $sanitized_value = call_user_func( $param_args['sanitize_callback'], $value, $this, $key );
 
                 if ( is_wp_error( $sanitized_value ) ) {

trunk/tests/phpunit/tests/rest-api/rest-request.php

@@ -341 +341 @@
         $this->assertWPError( $valid );
         $this->assertEquals( 'rest_invalid_param', $valid->get_error_code() );
+    }
+
+    public function test_sanitize_params_with_null_callback() {
+        $this->request->set_url_params( array(
+            'some_email' => '',
+        ) );
+
+        $this->request->set_attributes( array(
+            'args' => array(
+                'some_email' => array(
+                    'type'              => 'string',
+                    'format'            => 'email',
+                    'sanitize_callback' => null,
+                ),
+            ),
+        ) );
+
+        $this->assertTrue( $this->request->sanitize_params() );
+    }
+
+    public function test_sanitize_params_with_false_callback() {
+        $this->request->set_url_params( array(
+            'some_uri'   => 1.23422,
+        ) );
+
+        $this->request->set_attributes( array(
+            'args' => array(
+                'some_uri' => array(
+                    'type'              => 'string',
+                    'format'            => 'uri',
+                    'sanitize_callback' => false,
+                ),
+            ),
+        ) );
+
+        $this->assertTrue( $this->request->sanitize_params() );
     }