tor-browser

commit b6c54c546d7ee108d904310b44255da06dcbae81
parent 754a58c635137c879c4f0a881bcde226c2942c1b
Author: Daniel Minor <dminor@mozilla.com>
Date:   Fri, 12 Dec 2025 14:12:35 +0000

Bug 1994828 - Add HasWasmMimeTypeEssence; r=dom-core,smaug

Differential Revision: https://phabricator.services.mozilla.com/D270148

Diffstat:
M
dom/base/nsContentUtils.cpp
 | 
9
+++++++++
M
dom/base/nsContentUtils.h
 | 
6
++++++

2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
@@ -8683,6 +8683,15 @@ bool nsContentUtils::HasCssMimeTypeEssence(const nsAString& aMimeType) {
   return false;
 }
 
+// https://html.spec.whatwg.org/#fetch-a-single-module-script, 13.6
+bool nsContentUtils::HasWasmMimeTypeEssence(const nsAString& aMimeType) {
+  nsString contentType, contentCharset;
+  if (MimeType::Parse(aMimeType, contentType, contentCharset)) {
+    return contentType.LowerCaseEqualsLiteral("application/wasm");
+  }
+  return false;
+}
+
 bool nsContentUtils::PrefetchPreloadEnabled(nsIDocShell* aDocShell) {
   //
   // SECURITY CHECK: disable prefetching and preloading from mailnews!
diff --git a/dom/base/nsContentUtils.h b/dom/base/nsContentUtils.h
@@ -2747,6 +2747,12 @@ class nsContentUtils {
    */
   static bool HasCssMimeTypeEssence(const nsAString& aMimeType);
 
+  /**
+   * Returns true if the given MIME type string has a wasm MIME type essence,
+   * otherwise false.
+   */
+  static bool HasWasmMimeTypeEssence(const nsAString& aMimeType);
+
   static void SplitMimeType(const nsAString& aValue, nsString& aType,
                             nsString& aParams);