Implement Subresource Integrity

Implemented response validation part of
https://w3c.github.io/webappsec-subresource-integrity/.
Implemented step eighteen of the main fetch. If a request has integrity
metadata, then following steps are performed
*Wait for response body
*If the response does not have a termination reason and response does not
match request’s integrity metadata, set response to a
network error.# Please enter the commit message for your changes. Lines starting

1 files changed, 3 insertions, 0 deletions

diff --git a/components/net_traits/request.rs b/components/net_traits/request.rs
index d082f20b422..13a0ece3c0b 100644
--- a/components/net_traits/request.rs
+++ b/components/net_traits/request.rs
@@ -158,6 +158,7 @@ pub struct RequestInit {
     pub referrer_policy: Option<ReferrerPolicy>,
     pub pipeline_id: Option<PipelineId>,
     pub redirect_mode: RedirectMode,
+    pub integrity_metadata: String,
 }
 
 impl Default for RequestInit {
@@ -181,6 +182,7 @@ impl Default for RequestInit {
             referrer_policy: None,
             pipeline_id: None,
             redirect_mode: RedirectMode::Follow,
+            integrity_metadata: "".to_owned(),
         }
     }
 }
@@ -291,6 +293,7 @@ impl Request {
         req.referrer_policy.set(init.referrer_policy);
         req.pipeline_id.set(init.pipeline_id);
         req.redirect_mode.set(init.redirect_mode);
+        *req.integrity_metadata.borrow_mut() = init.integrity_metadata;
         req
     }