components/resource_provider/resource_provider_impl.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/resource_provider/resource_provider_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/files/file_util.h"
   9 #include "base/location.h"
  10 #include "base/logging.h"
  11 #include "components/resource_provider/file_utils.h"
  12 #include "mojo/platform_handle/platform_handle_functions.h"
  13
  14 using mojo::ScopedHandle;
  15
  16 namespace resource_provider {
  17 namespace {
  18
  19 ScopedHandle GetHandleForPath(const base::FilePath& path) {
  20   if (path.empty())
  21     return ScopedHandle();
  22
  23   ScopedHandle to_pass;
  24   base::File file(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
  25   if (!file.IsValid()) {
  26     LOG(WARNING) << "file not valid, path=" << path.value();
  27     return ScopedHandle();
  28   }
  29
  30   MojoHandle mojo_handle;
  31   MojoResult create_result =
  32       MojoCreatePlatformHandleWrapper(file.TakePlatformFile(), &mojo_handle);
  33   if (create_result != MOJO_RESULT_OK) {
  34     LOG(WARNING) << "unable to create wrapper, path=" << path.value()
  35                  << "result=" << create_result;
  36     return ScopedHandle();
  37   }
  38
  39   return ScopedHandle(mojo::Handle(mojo_handle)).Pass();
  40 }
  41
  42 }  // namespace
  43
  44 ResourceProviderImpl::ResourceProviderImpl(
  45     const base::FilePath& application_path)
  46     : application_path_(application_path) {
  47   CHECK(!application_path_.empty());
  48 }
  49
  50 ResourceProviderImpl::~ResourceProviderImpl() {
  51 }
  52
  53 void ResourceProviderImpl::GetResources(mojo::Array<mojo::String> paths,
  54                                         const GetResourcesCallback& callback) {
  55   mojo::Array<mojo::ScopedHandle> handles;
  56   if (!paths.is_null()) {
  57     handles.resize(paths.size());
  58     for (size_t i = 0; i < paths.size(); ++i) {
  59       handles[i] = GetHandleForPath(
  60           GetPathForResourceNamed(application_path_, paths[i]));
  61     }
  62   }
  63   callback.Run(handles.Pass());
  64 }
  65
  66 }  // namespace resource_provider