Implement cross origin resource policy check

I removed the window getter usage from those tests as servo does not
support that yet.

components/layout_2020/context.rs

@@ -113,7 +113,7 @@ impl<'a> LayoutContext<'a> {
         }
 
         match self.get_or_request_image_or_meta(node, url.clone(), use_placeholder) {
-            Some(ImageOrMetadataAvailable::ImageAvailable(image, _)) => {
+            Some(ImageOrMetadataAvailable::ImageAvailable { image, .. }) => {
                 let image_info = WebRenderImageInfo {
                     width: image.width,
                     height: image.height,

components/layout_2020/replaced.rs

@@ -125,7 +125,7 @@ impl ReplacedContent {
                 image_url.clone(),
                 UsePlaceholder::No,
             ) {
-                Some(ImageOrMetadataAvailable::ImageAvailable(image, _)) => {
+                Some(ImageOrMetadataAvailable::ImageAvailable { image, .. }) => {
                     (Some(image.clone()), image.width as f32, image.height as f32)
                 },
                 Some(ImageOrMetadataAvailable::MetadataAvailable(metadata)) => {

components/net/http_loader.rs

@@ -33,6 +33,7 @@ use http::{HeaderMap, Request as HyperRequest};
 use hyper::{Body, Client, Method, Response as HyperResponse, StatusCode};
 use hyper_serde::Serde;
 use msg::constellation_msg::{HistoryStateId, PipelineId};
+use net_traits::pub_domains::reg_suffix;
 use net_traits::quality::{quality_to_value, Quality, QualityItem};
 use net_traits::request::Origin::Origin as SpecificOrigin;
 use net_traits::request::{is_cors_safelisted_method, is_cors_safelisted_request_header};
@@ -189,6 +190,28 @@ fn strict_origin_when_cross_origin(referrer_url: ServoUrl, url: ServoUrl) -> Opt
     strip_url(referrer_url, cross_origin)
 }
 
+/// https://html.spec.whatwg.org/multipage/#schemelessly-same-site
+fn is_schemelessy_same_site(site_a: &ImmutableOrigin, site_b: &ImmutableOrigin) -> bool {
+    // Step 1
+    if !site_a.is_tuple() && !site_b.is_tuple() && site_a == site_b {
+        true
+    } else if site_a.is_tuple() && site_b.is_tuple() {
+        // Step 2.1
+        let host_a = site_a.host().map(|h| h.to_string()).unwrap_or_default();
+        let host_b = site_b.host().map(|h| h.to_string()).unwrap_or_default();
+
+        let host_a_reg = reg_suffix(&host_a);
+        let host_b_reg = reg_suffix(&host_b);
+
+        // Step 2.2-2.3
+        (site_a.host() == site_b.host() && host_a_reg == "") ||
+            (host_a_reg == host_b_reg && host_a_reg != "")
+    } else {
+        // Step 3
+        false
+    }
+}
+
 /// <https://w3c.github.io/webappsec-referrer-policy/#strip-url>
 fn strip_url(mut referrer_url: ServoUrl, origin_only: bool) -> Option<ServoUrl> {
     const MAX_REFERRER_URL_LENGTH: usize = 4096;
@@ -1251,7 +1274,74 @@ fn http_network_or_cache_fetch(
     // TODO: if necessary set response's range-requested flag
 
     // Step 9
-    // TODO: handle CORS not set and cross-origin blocked
+    // https://fetch.spec.whatwg.org/#cross-origin-resource-policy-check
+    #[derive(PartialEq)]
+    enum CrossOriginResourcePolicy {
+        Allowed,
+        Blocked,
+    }
+
+    fn cross_origin_resource_policy_check(
+        request: &Request,
+        response: &Response,
+    ) -> CrossOriginResourcePolicy {
+        // Step 1
+        if request.mode != RequestMode::NoCors {
+            return CrossOriginResourcePolicy::Allowed;
+        }
+
+        // Step 2
+        let current_url_origin = request.current_url().origin();
+        let same_origin = if let Origin::Origin(ref origin) = request.origin {
+            *origin == request.current_url().origin()
+        } else {
+            false
+        };
+
+        if same_origin {
+            return CrossOriginResourcePolicy::Allowed;
+        }
+
+        // Step 3
+        let policy = response
+            .headers
+            .get(HeaderName::from_static("cross-origin-resource-policy"))
+            .map(|h| h.to_str().unwrap_or(""))
+            .unwrap_or("");
+
+        // Step 4
+        if policy == "same-origin" {
+            return CrossOriginResourcePolicy::Blocked;
+        }
+
+        // Step 5
+        if let Origin::Origin(ref request_origin) = request.origin {
+            let schemeless_same_origin =
+                is_schemelessy_same_site(&request_origin, &current_url_origin);
+            if schemeless_same_origin &&
+                (request_origin.scheme() == Some("https") ||
+                    response.https_state == HttpsState::None)
+            {
+                return CrossOriginResourcePolicy::Allowed;
+            }
+        };
+
+        // Step 6
+        if policy == "same-site" {
+            return CrossOriginResourcePolicy::Blocked;
+        }
+
+        CrossOriginResourcePolicy::Allowed
+    }
+
+    if http_request.response_tainting != ResponseTainting::CorsTainting &&
+        cross_origin_resource_policy_check(&http_request, &response) ==
+            CrossOriginResourcePolicy::Blocked
+    {
+        return Response::network_error(NetworkError::Internal(
+            "Cross-origin resource policy check failed".into(),
+        ));
+    }
 
     // Step 10
     // FIXME: Figure out what to do with request window objects

components/net_traits/response.rs

@@ -61,7 +61,7 @@ pub enum CacheState {
 }
 
 /// [Https state](https://fetch.spec.whatwg.org/#concept-response-https-state)
-#[derive(Clone, Copy, Debug, Deserialize, MallocSizeOf, Serialize)]
+#[derive(Clone, Copy, Debug, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum HttpsState {
     None,
     Deprecated,

tests/wpt/metadata/MANIFEST.json

@@ -424333,7 +424333,7 @@
       ]
      ],
      "image-loads.html": [
-      "8a0458f107abdf2b7d6664fb8194e6b4b0222989",
+      "060b7551ea516837cf416c797e85474658857632",
       [
        null,
        {}
@@ -424379,7 +424379,7 @@
       ]
      ],
      "script-loads.html": [
-      "5850e0109f18c23e40d73686bef5e4b6a6b40686",
+      "a9690fc70be13885d7ca6448730c83f755810774",
       [
        null,
        {}

tests/wpt/metadata/fetch/cross-origin-resource-policy/fetch-in-iframe.html.ini

@@ -5,15 +5,3 @@
   [fetch-in-iframe]
     expected: FAIL
 
-  [Cross-origin fetch in a data: iframe load fails if the server blocks cross-origin loads with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin fetch in a data: iframe load fails if the server blocks cross-origin loads with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin fetch in a cross origin iframe load fails if the server blocks cross-origin loads with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin fetch in a cross origin iframe load fails if the server blocks cross-origin loads with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-

tests/wpt/metadata/fetch/cross-origin-resource-policy/fetch.any.js.ini

@@ -7,53 +7,11 @@
   [fetch]
     expected: FAIL
 
-  [Valid cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header after a redirection.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch to a same-site URL with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' redirect response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-scheme (HTTP to HTTPS) no-cors fetch to a same-site URL with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
 
 [fetch.any.worker.html]
   [fetch]
     expected: FAIL
 
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch to a same-site URL with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Valid cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header after a redirection.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' redirect response header.]
-    expected: FAIL
-
-  [Cross-scheme (HTTP to HTTPS) no-cors fetch to a same-site URL with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
 
 [fetch.any.sharedworker.html]
   expected: ERROR

tests/wpt/metadata/fetch/cross-origin-resource-policy/fetch.https.any.js.ini

@@ -1,16 +1,4 @@
 [fetch.https.any.html]
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header after a redirection.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' redirect response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
 
 [fetch.https.any.serviceworker.html]
   expected: ERROR
@@ -25,18 +13,6 @@
 
 
 [fetch.https.any.worker.html]
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header after a redirection.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' redirect response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors fetch with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
   [fetch]
     expected: FAIL
 

tests/wpt/metadata/fetch/cross-origin-resource-policy/iframe-loads.html.ini

@@ -1,8 +1,6 @@
 [iframe-loads.html]
   [Untitled]
     expected: FAIL
-  [Load an iframe that has Cross-Origin-Resource-Policy header]
-    expected: FAIL
 
   [iframe-loads]
     expected: FAIL

tests/wpt/metadata/fetch/cross-origin-resource-policy/image-loads.html.ini

@@ -1,19 +0,0 @@
-[image-loads.html]
-  [Same-origin image load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Same-origin image load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin cors image load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin cors image load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors image load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors image load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-

tests/wpt/metadata/fetch/cross-origin-resource-policy/scheme-restriction.any.js.ini

@@ -1,9 +0,0 @@
-[scheme-restriction.any.html]
-  [Cross-Origin-Resource-Policy: same-site blocks retrieving HTTPS from HTTP]
-    expected: FAIL
-
-
-[scheme-restriction.any.worker.html]
-  [Cross-Origin-Resource-Policy: same-site blocks retrieving HTTPS from HTTP]
-    expected: FAIL
-

tests/wpt/metadata/fetch/cross-origin-resource-policy/script-loads.html.ini

@@ -1,19 +0,0 @@
-[script-loads.html]
-  [Same-origin script load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Same-origin script load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin cors script load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin cors script load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors script load with a 'Cross-Origin-Resource-Policy: same-origin' response header.]
-    expected: FAIL
-
-  [Cross-origin no-cors script load with a 'Cross-Origin-Resource-Policy: same-site' response header.]
-    expected: FAIL
-

tests/wpt/web-platform-tests/fetch/cross-origin-resource-policy/image-loads.html

@@ -16,6 +16,7 @@ const noCors = false;
 
 function loadImage(url, shoudLoad, corsMode, title)
 {
+    const testDiv = document.getElementById("testDiv");
     promise_test(() => {
         const img = new Image();
         if (corsMode)

tests/wpt/web-platform-tests/fetch/cross-origin-resource-policy/script-loads.html

@@ -16,6 +16,7 @@ const noCors = false;
 
 function loadScript(url, shoudLoad, corsMode, title)
 {
+    const testDiv = document.getElementById("testDiv");
     promise_test(() => {
         const script = document.createElement("script");
         if (corsMode)