Bug 1558915 - Use infallible nsIURI::SchemeIs in uriloader/ r=bzbarsky

Differential Revision: https://phabricator.services.mozilla.com/D40546

--HG--
extra : moz-landing-system : lando

uriloader/base/nsURILoader.cpp

@@ -252,11 +252,7 @@ NS_IMETHODIMP nsDocumentOpenInfo::OnStartRequest(nsIRequest* request) {
         nsCOMPtr<nsIURI> uri;
         rv = httpChannel->GetURI(getter_AddRefs(uri));
         if (NS_SUCCEEDED(rv) && uri) {
-          bool httpScheme = false;
-          bool httpsScheme = false;
-          uri->SchemeIs("http", &httpScheme);
-          uri->SchemeIs("https", &httpsScheme);
-          if ((httpScheme || httpsScheme) &&
+          if ((uri->SchemeIs("http") || uri->SchemeIs("https")) &&
               nsContentUtils::AttemptLargeAllocationLoad(httpChannel)) {
             return NS_BINDING_ABORTED;
           }

uriloader/exthandler/nsExternalHelperAppService.cpp

@@ -745,17 +745,7 @@ NS_IMETHODIMP nsExternalHelperAppService::DoContent(
         nsAutoCString query;
 
         // We only care about the query for HTTP and HTTPS URLs
-        nsresult rv;
-        bool isHTTP, isHTTPS;
-        rv = uri->SchemeIs("http", &isHTTP);
-        if (NS_FAILED(rv)) {
-          isHTTP = false;
-        }
-        rv = uri->SchemeIs("https", &isHTTPS);
-        if (NS_FAILED(rv)) {
-          isHTTPS = false;
-        }
-        if (isHTTP || isHTTPS) {
+        if (uri->SchemeIs("http") || uri->SchemeIs("https")) {
           url->GetQuery(query);
         }
 

uriloader/prefetch/OfflineCacheUpdateChild.cpp

@@ -179,14 +179,8 @@ OfflineCacheUpdateChild::Init(nsIURI* aManifestURI, nsIURI* aDocumentURI,
   LOG(("OfflineCacheUpdateChild::Init [%p]", this));
 
   // Only http and https applications are supported.
-  bool match;
-  rv = aManifestURI->SchemeIs("http", &match);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (!match) {
-    rv = aManifestURI->SchemeIs("https", &match);
-    NS_ENSURE_SUCCESS(rv, rv);
-    if (!match) return NS_ERROR_ABORT;
+  if (!aManifestURI->SchemeIs("http") && !aManifestURI->SchemeIs("https")) {
+    return NS_ERROR_ABORT;
   }
 
   mManifestURI = aManifestURI;

uriloader/prefetch/nsOfflineCacheUpdate.cpp

@@ -509,8 +509,7 @@ nsOfflineCacheUpdateItem::AsyncOnChannelRedirect(
   nsAutoCString oldScheme;
   mURI->GetScheme(oldScheme);
 
-  bool match;
-  if (NS_FAILED(newURI->SchemeIs(oldScheme.get(), &match)) || !match) {
+  if (!newURI->SchemeIs(oldScheme.get())) {
     LOG(("rejected: redirected to a different scheme\n"));
     return NS_ERROR_ABORT;
   }
@@ -841,8 +840,9 @@ nsresult nsOfflineManifestItem::HandleManifestLine(
       uri->GetScheme(scheme);
 
       // Manifest URIs must have the same scheme as the manifest.
-      bool match;
-      if (NS_FAILED(mURI->SchemeIs(scheme.get(), &match)) || !match) break;
+      if (!mURI->SchemeIs(scheme.get())) {
+        break;
+      }
 
       mExplicitURIs.AppendObject(uri);
 
@@ -934,8 +934,9 @@ nsresult nsOfflineManifestItem::HandleManifestLine(
 
       nsAutoCString scheme;
       bypassURI->GetScheme(scheme);
-      bool equals;
-      if (NS_FAILED(mURI->SchemeIs(scheme.get(), &equals)) || !equals) break;
+      if (!mURI->SchemeIs(scheme.get())) {
+        break;
+      }
       if (NS_FAILED(DropReferenceFromURL(bypassURI))) break;
       nsCString spec;
       if (NS_FAILED(bypassURI->GetAsciiSpec(spec))) break;
@@ -1142,14 +1143,8 @@ nsresult nsOfflineCacheUpdate::InitInternal(nsIURI* aManifestURI,
   nsresult rv;
 
   // Only http and https applications are supported.
-  bool match;
-  rv = aManifestURI->SchemeIs("http", &match);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (!match) {
-    rv = aManifestURI->SchemeIs("https", &match);
-    NS_ENSURE_SUCCESS(rv, rv);
-    if (!match) return NS_ERROR_ABORT;
+  if (!aManifestURI->SchemeIs("http") && !aManifestURI->SchemeIs("https")) {
+    return NS_ERROR_ABORT;
   }
 
   mManifestURI = aManifestURI;
@@ -2136,9 +2131,9 @@ nsresult nsOfflineCacheUpdate::AddURI(nsIURI* aURI, uint32_t aType,
   nsAutoCString scheme;
   aURI->GetScheme(scheme);
 
-  bool match;
-  if (NS_FAILED(mManifestURI->SchemeIs(scheme.get(), &match)) || !match)
+  if (!mManifestURI->SchemeIs(scheme.get())) {
     return NS_ERROR_FAILURE;
+  }
 
   // Don't fetch the same URI twice.
   for (uint32_t i = 0; i < mItems.Length(); i++) {

uriloader/prefetch/nsOfflineCacheUpdateService.cpp

@@ -544,24 +544,13 @@ static nsresult OfflineAppPermForPrincipal(nsIPrincipal* aPrincipal,
   if (!innerURI) return NS_OK;
 
   // only http and https applications can use offline APIs.
-  bool match;
-  nsresult rv = innerURI->SchemeIs("http", &match);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (!match) {
-    rv = innerURI->SchemeIs("https", &match);
-    NS_ENSURE_SUCCESS(rv, rv);
-    if (!match) {
-      return NS_OK;
-    }
-  } else {
-    if (!sAllowInsecureOfflineCache) {
-      return NS_OK;
-    }
+  if (!(innerURI->SchemeIs("http") && sAllowInsecureOfflineCache) &&
+      !innerURI->SchemeIs("https")) {
+    return NS_OK;
   }
 
   nsAutoCString domain;
-  rv = innerURI->GetAsciiHost(domain);
+  nsresult rv = innerURI->GetAsciiHost(domain);
   NS_ENSURE_SUCCESS(rv, rv);
 
   if (nsOfflineCacheUpdateService::AllowedDomains()->Contains(domain)) {
@@ -639,11 +628,7 @@ nsOfflineCacheUpdateService::AllowOfflineApp(nsIPrincipal* aPrincipal) {
     }
 
     // if http then we should prevent this cache
-    bool match;
-    rv = innerURI->SchemeIs("http", &match);
-    NS_ENSURE_SUCCESS(rv, rv);
-
-    if (match) {
+    if (innerURI->SchemeIs("http")) {
       return NS_ERROR_NOT_AVAILABLE;
     }
   }

uriloader/prefetch/nsPrefetchService.cpp

@@ -287,14 +287,9 @@ nsPrefetchNode::AsyncOnChannelRedirect(
   nsresult rv = aNewChannel->GetURI(getter_AddRefs(newURI));
   if (NS_FAILED(rv)) return rv;
 
-  bool match;
-  rv = newURI->SchemeIs("http", &match);
-  if (NS_FAILED(rv) || !match) {
-    rv = newURI->SchemeIs("https", &match);
-    if (NS_FAILED(rv) || !match) {
-      LOG(("rejected: URL is not of type http/https\n"));
-      return NS_ERROR_ABORT;
-    }
+  if (!newURI->SchemeIs("http") && !newURI->SchemeIs("https")) {
+    LOG(("rejected: URL is not of type http/https\n"));
+    return NS_ERROR_ABORT;
   }
 
   // HTTP request headers are not automatically forwarded to the new channel.
@@ -565,14 +560,9 @@ nsresult nsPrefetchService::CheckURIScheme(nsIURI* aURI,
   // for now, we'll only prefetch http and https links since we know that's
   // the most common case.
   //
-  bool match;
-  nsresult rv = aURI->SchemeIs("http", &match);
-  if (NS_FAILED(rv) || !match) {
-    rv = aURI->SchemeIs("https", &match);
-    if (NS_FAILED(rv) || !match) {
-      LOG(("rejected: URL is not of type http/https\n"));
-      return NS_ERROR_ABORT;
-    }
+  if (!aURI->SchemeIs("http") && !aURI->SchemeIs("https")) {
+    LOG(("rejected: URL is not of type http/https\n"));
+    return NS_ERROR_ABORT;
   }
 
   //
@@ -583,13 +573,10 @@ nsresult nsPrefetchService::CheckURIScheme(nsIURI* aURI,
     return NS_ERROR_ABORT;
   }
 
-  rv = referrer->SchemeIs("http", &match);
-  if (NS_FAILED(rv) || !match) {
-    rv = referrer->SchemeIs("https", &match);
-    if (NS_FAILED(rv) || !match) {
-      LOG(("rejected: referrer URL is neither http nor https\n"));
-      return NS_ERROR_ABORT;
-    }
+
+  if (!referrer->SchemeIs("http") && !referrer->SchemeIs("https")) {
+    LOG(("rejected: referrer URL is neither http nor https\n"));
+    return NS_ERROR_ABORT;
   }
 
   return NS_OK;