Add a whitelist check for nacl-nonsfi mode

chrome/common/pepper_permission_util.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/pepper_permission_util.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_tokenizer.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/manifest_handlers/shared_module_info.h"
 
 using extensions::Extension;
 using extensions::Manifest;
+using extensions::SharedModuleInfo;
 
 namespace chrome {
 
 namespace {
 
 std::string HashHost(const std::string& host) {
   const std::string id_hash = base::SHA1HashString(host);
   DCHECK_EQ(id_hash.length(), base::kSHA1Length);
   return base::HexEncode(id_hash.c_str(), id_hash.length());
 }
@@ skipping 12 matching lines @@
     return false;
 
   const std::string host = url.host();
   if (HostIsInSet(host, whitelist))
     return true;
 
   // Check the modules that are imported by this extension to see if any of them
   // is whitelisted.
   const Extension* extension = extension_set ? extension_set->GetByID(host)
                                              : NULL;
-  if (extension) {
-    typedef std::vector<extensions::SharedModuleInfo::ImportInfo>
-        ImportInfoVector;
-    const ImportInfoVector& imports =
-        extensions::SharedModuleInfo::GetImports(extension);
-    for (ImportInfoVector::const_iterator it = imports.begin();
-         it != imports.end(); ++it) {
-      const Extension* imported_extension = extension_set->GetByID(
-          it->extension_id);
-      if (imported_extension &&
-          extensions::SharedModuleInfo::IsSharedModule(imported_extension) &&
-          HostIsInSet(it->extension_id, whitelist)) {
-        return true;
-      }
+  if (!extension)
+    return false;
+
+  typedef std::vector<SharedModuleInfo::ImportInfo> ImportInfoVector;
+  const ImportInfoVector& imports = SharedModuleInfo::GetImports(extension);
+  for (ImportInfoVector::const_iterator it = imports.begin();
+       it != imports.end();
+       ++it) {
+    const Extension* imported_extension =
+        extension_set->GetByID(it->extension_id);
+    if (imported_extension &&
+        SharedModuleInfo::IsSharedModule(imported_extension) &&
+        // We check the whitelist explicitly even though the extension should
+        // never have been allowed to be installed in the first place if this
+        // fails.  See SharedModuleService::CheckImports for details.
+        SharedModuleInfo::IsExportAllowedByWhitelist(imported_extension,
+                                                     host) &&
+        HostIsInSet(it->extension_id, whitelist)) {
+      return true;
     }
   }
 
   return false;
 }
 
 bool IsHostAllowedByCommandLine(const GURL& url,
                                 const extensions::ExtensionSet* extension_set,
                                 const char* command_line_switch) {
   if (!url.is_valid())
@@ skipping 20 matching lines @@
   base::StringTokenizer t(allowed_list, ",");
   while (t.GetNext()) {
     if (t.token() == host)
       return true;
   }
 
   return false;
 }
 
 }  // namespace chrome