Enable forced extension updates on NaCl arch mismatch

extensions/common/extension.cc

 // Copyright (c) 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 "extensions/common/extension.h"
 
+#include <algorithm>
+
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/command_line.h"
+#include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
+#include "base/files/file_util.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/stl_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 37 matching lines @@
   // We should disallow backslash '\\' as file path separator even on Windows,
   // because the backslash is not regarded as file path separator on Linux/Mac.
   // Extensions are cross-platform.
   // Since FilePath uses backslash '\\' as file path separator on Windows, so we
   // need to check manually.
   if (path.value().find('\\') != path.value().npos)
     return true;
   return !net::IsSafePortableRelativePath(path);
 }
 
+void DetermineInstalledNaclArchs(const base::FilePath& extension_path,
+                                 std::set<std::string>* archs) {
+  archs->clear();
+  base::FilePath platform_specific_path = extension_path.Append(
+      kPlatformSpecificFolder);
+  if (!base::PathExists(platform_specific_path)) {
+    return;
+  }
+
+  base::FileEnumerator all_archs(platform_specific_path,
+                                 false,
+                                 base::FileEnumerator::DIRECTORIES);
+  base::FilePath arch;
+  while (!(arch = all_archs.Next()).empty()) {
+    std::string arch_name = arch.BaseName().AsUTF8Unsafe();
+    std::replace(arch_name.begin(), arch_name.end(), '_', '-');
+    archs->insert(arch_name);
+  }
+}
+
 }  // namespace
 
 const int Extension::kInitFromValueFlagBits = 13;
 
 const char Extension::kMimeType[] = "application/x-chrome-extension";
 
 const int Extension::kValidWebExtentSchemes =
     URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS;
 
 const int Extension::kValidHostPermissionSchemes = URLPattern::SCHEME_CHROMEUI |
@@ skipping 350 matching lines @@
 }
 
 void Extension::AddWebExtentPattern(const URLPattern& pattern) {
   // Bookmark apps are permissionless.
   if (from_bookmark())
     return;
 
   extent_.AddPattern(pattern);
 }
 
+bool Extension::HasPlatformSpecificResources() const {
+  return !installed_nacl_archs_.empty();
+}
+
+bool Extension::HasResourcesForPlatform(const std::string& nacl_arch) const {
+  return installed_nacl_archs_.find(nacl_arch) != installed_nacl_archs_.end();
+}
+
 // static
 bool Extension::InitExtensionID(extensions::Manifest* manifest,
                                 const base::FilePath& path,
                                 const std::string& explicit_id,
                                 int creation_flags,
                                 base::string16* error) {
   if (!explicit_id.empty()) {
     manifest->set_extension_id(explicit_id);
     return true;
   }
@@ skipping 81 matching lines @@
   if (!LoadSharedFeatures(error))
     return false;
 
   permissions_parser_->Finalize(this);
   permissions_parser_.reset();
 
   finished_parsing_manifest_ = true;
 
   permissions_data_.reset(new PermissionsData(this));
 
+  DetermineInstalledNaclArchs(path_, &installed_nacl_archs_);
+
   return true;
 }
 
 bool Extension::LoadRequiredFeatures(base::string16* error) {
   if (!LoadName(error) ||
       !LoadVersion(error))
     return false;
   return true;
 }
 
@@ skipping 214 matching lines @@
 
 UpdatedExtensionPermissionsInfo::UpdatedExtensionPermissionsInfo(
     const Extension* extension,
     const PermissionSet* permissions,
     Reason reason)
     : reason(reason),
       extension(extension),
       permissions(permissions) {}
 
 }   // namespace extensions