Bug 1914286 - Remove NS_RelaxStrictFileOriginPolicy. r=smaug,necko-reviewers,kershaw

Differential Revision: https://phabricator.services.mozilla.com/D219921

caps/BasePrincipal.cpp

@@ -793,18 +793,6 @@ BasePrincipal::IsL10nAllowed(nsIURI* aURI, bool* aRes) {
   return NS_OK;
 }
 
-NS_IMETHODIMP
-BasePrincipal::AllowsRelaxStrictFileOriginPolicy(nsIURI* aURI, bool* aRes) {
-  *aRes = false;
-  nsCOMPtr<nsIURI> prinURI;
-  nsresult rv = GetURI(getter_AddRefs(prinURI));
-  if (NS_FAILED(rv) || !prinURI) {
-    return NS_OK;
-  }
-  *aRes = NS_RelaxStrictFileOriginPolicy(aURI, prinURI);
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 BasePrincipal::GetPrefLightCacheKey(nsIURI* aURI, bool aWithCredentials,
                                     const OriginAttributes& aOriginAttributes,

caps/BasePrincipal.h

@@ -182,8 +182,6 @@ class BasePrincipal : public nsJSPrincipals {
                                         bool* aOutAllowed) override;
   NS_IMETHOD GetAsciiHost(nsACString& aAsciiHost) override;
   NS_IMETHOD GetLocalStorageQuotaKey(nsACString& aRes) override;
-  NS_IMETHOD AllowsRelaxStrictFileOriginPolicy(nsIURI* aURI,
-                                               bool* aRes) override;
   NS_IMETHOD CreateReferrerInfo(mozilla::dom::ReferrerPolicy aReferrerPolicy,
                                 nsIReferrerInfo** _retval) override;
   NS_IMETHOD GetIsScriptAllowedByPolicy(

caps/ContentPrincipal.cpp

@@ -305,14 +305,6 @@ bool ContentPrincipal::MayLoadInternal(nsIURI* aURI) {
     return true;
   }
 
-  // If strict file origin policy is in effect, local files will always fail
-  // SecurityCompareURIs unless they are identical. Explicitly check file origin
-  // policy, in that case.
-  if (nsScriptSecurityManager::GetStrictFileOriginPolicy() &&
-      NS_URIIsLocalFile(aURI) && NS_RelaxStrictFileOriginPolicy(aURI, mURI)) {
-    return true;
-  }
-
   return false;
 }
 

caps/nsIPrincipal.idl

@@ -419,14 +419,6 @@ interface nsIPrincipal : nsISupports
     [infallible]
     boolean isSameOrigin(in nsIURI otherURI);
 
-    /*
-     * Checks if the Principal is allowed to load the Provided file:// URI
-     * using NS_RelaxStrictFileOriginPolicy
-     *
-     * May be called from any thread.
-     */
-    boolean allowsRelaxStrictFileOriginPolicy(in nsIURI aURI);
-
 
     /*
      * Generates a Cache-Key for the Cors-Preflight Cache

dom/workers/WorkerLoadInfo.cpp

@@ -333,20 +333,6 @@ bool WorkerLoadInfo::PrincipalURIMatchesScriptURL() {
     return true;
   }
 
-  // If strict file origin policy is in effect, local files will always fail
-  // IsSameOrigin unless they are identical. Explicitly check file origin
-  // policy, in that case.
-
-  bool allowsRelaxedOriginPolicy = false;
-  rv = mPrincipal->AllowsRelaxStrictFileOriginPolicy(
-      mBaseURI, &allowsRelaxedOriginPolicy);
-
-  if (nsScriptSecurityManager::GetStrictFileOriginPolicy() &&
-      NS_URIIsLocalFile(mBaseURI) &&
-      (NS_SUCCEEDED(rv) && allowsRelaxedOriginPolicy)) {
-    return true;
-  }
-
   return false;
 }
 #endif  // MOZ_DIAGNOSTIC_ASSERT_ENABLED

netwerk/base/nsNetUtil.cpp

@@ -2450,8 +2450,7 @@ bool NS_SecurityCompareURIs(nsIURI* aSourceURI, nsIURI* aTargetURI,
     return false;
   }
 
-  // For file scheme, reject unless the files are identical. See
-  // NS_RelaxStrictFileOriginPolicy for enforcing file same-origin checking
+  // For file scheme, reject unless the files are identical.
   if (targetScheme.EqualsLiteral("file")) {
     // in traditional unsafe behavior all files are the same origin
     if (!aStrictFileOriginPolicy) return true;
@@ -2520,50 +2519,6 @@ bool NS_URIIsLocalFile(nsIURI* aURI) {
          isFile;
 }
 
-bool NS_RelaxStrictFileOriginPolicy(nsIURI* aTargetURI, nsIURI* aSourceURI,
-                                    bool aAllowDirectoryTarget /* = false */) {
-  if (!NS_URIIsLocalFile(aTargetURI)) {
-    // This is probably not what the caller intended
-    MOZ_ASSERT_UNREACHABLE(
-        "NS_RelaxStrictFileOriginPolicy called with non-file URI");
-    return false;
-  }
-
-  if (!NS_URIIsLocalFile(aSourceURI)) {
-    // If the source is not also a file: uri then forget it
-    // (don't want resource: principals in a file: doc)
-    //
-    // note: we're not de-nesting jar: uris here, we want to
-    // keep archive content bottled up in its own little island
-    return false;
-  }
-
-  //
-  // pull out the internal files
-  //
-  nsCOMPtr<nsIFileURL> targetFileURL(do_QueryInterface(aTargetURI));
-  nsCOMPtr<nsIFileURL> sourceFileURL(do_QueryInterface(aSourceURI));
-  nsCOMPtr<nsIFile> targetFile;
-  nsCOMPtr<nsIFile> sourceFile;
-  bool targetIsDir;
-
-  // Make sure targetFile is not a directory (bug 209234)
-  // and that it exists w/out unescaping (bug 395343)
-  if (!sourceFileURL || !targetFileURL ||
-      NS_FAILED(targetFileURL->GetFile(getter_AddRefs(targetFile))) ||
-      NS_FAILED(sourceFileURL->GetFile(getter_AddRefs(sourceFile))) ||
-      !targetFile || !sourceFile || NS_FAILED(targetFile->Normalize()) ||
-#ifndef MOZ_WIDGET_ANDROID
-      NS_FAILED(sourceFile->Normalize()) ||
-#endif
-      (!aAllowDirectoryTarget &&
-       (NS_FAILED(targetFile->IsDirectory(&targetIsDir)) || targetIsDir))) {
-    return false;
-  }
-
-  return false;
-}
-
 bool NS_IsInternalSameURIRedirect(nsIChannel* aOldChannel,
                                   nsIChannel* aNewChannel, uint32_t aFlags) {
   if (!(aFlags & nsIChannelEventSink::REDIRECT_INTERNAL)) {

netwerk/base/nsNetUtil.h

@@ -878,15 +878,6 @@ bool NS_SecurityCompareURIs(nsIURI* aSourceURI, nsIURI* aTargetURI,
 
 bool NS_URIIsLocalFile(nsIURI* aURI);
 
-// When strict file origin policy is enabled, SecurityCompareURIs will fail for
-// file URIs that do not point to the same local file. This call provides an
-// alternate file-specific origin check that allows target files that are
-// contained in the same directory as the source.
-//
-// https://developer.mozilla.org/en-US/docs/Same-origin_policy_for_file:_URIs
-bool NS_RelaxStrictFileOriginPolicy(nsIURI* aTargetURI, nsIURI* aSourceURI,
-                                    bool aAllowDirectoryTarget = false);
-
 bool NS_IsInternalSameURIRedirect(nsIChannel* aOldChannel,
                                   nsIChannel* aNewChannel, uint32_t aFlags);
 

tools/@types/lib.gecko.xpcom.d.ts

@@ -1297,7 +1297,6 @@ interface nsIPrincipal extends nsISupports {
   isURIInList(list: string): boolean;
   isContentAccessibleAboutURI(): boolean;
   isSameOrigin(otherURI: nsIURI): boolean;
-  allowsRelaxStrictFileOriginPolicy(aURI: nsIURI): boolean;
   hasFirstpartyStorageAccess(aWindow: mozIDOMWindow, rejectedReason: OutParam<u32>): boolean;
   readonly localStorageQuotaKey: string;
   readonly isOriginPotentiallyTrustworthy: boolean;