extensions/common/manifest_handlers/nacl_modules_handler.cc

   1 // Copyright 2014 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 "extensions/common/manifest_handlers/nacl_modules_handler.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "base/values.h"
  12 #include "extensions/common/error_utils.h"
  13 #include "extensions/common/manifest_constants.h"
  14
  15 namespace extensions {
  16
  17 namespace keys = manifest_keys;
  18 namespace errors = manifest_errors;
  19
  20 namespace {
  21
  22 struct NaClModuleData : Extension::ManifestData {
  23   // Optional list of NaCl modules and associated properties.
  24   NaClModuleInfo::List nacl_modules_;
  25 };
  26
  27 }  // namespace
  28
  29 // static
  30 const NaClModuleInfo::List* NaClModuleInfo::GetNaClModules(
  31     const Extension* extension) {
  32   NaClModuleData* data = static_cast<NaClModuleData*>(
  33       extension->GetManifestData(keys::kNaClModules));
  34   return data ? &data->nacl_modules_ : NULL;
  35 }
  36
  37 NaClModulesHandler::NaClModulesHandler() {
  38 }
  39
  40 NaClModulesHandler::~NaClModulesHandler() {
  41 }
  42
  43 bool NaClModulesHandler::Parse(Extension* extension, base::string16* error) {
  44   const base::ListValue* list_value = NULL;
  45   if (!extension->manifest()->GetList(keys::kNaClModules, &list_value)) {
  46     *error = base::ASCIIToUTF16(errors::kInvalidNaClModules);
  47     return false;
  48   }
  49
  50   scoped_ptr<NaClModuleData> nacl_module_data(new NaClModuleData);
  51
  52   for (size_t i = 0; i < list_value->GetSize(); ++i) {
  53     const base::DictionaryValue* module_value = NULL;
  54     if (!list_value->GetDictionary(i, &module_value)) {
  55       *error = base::ASCIIToUTF16(errors::kInvalidNaClModules);
  56       return false;
  57     }
  58
  59     // Get nacl_modules[i].path.
  60     std::string path_str;
  61     if (!module_value->GetString(keys::kNaClModulesPath, &path_str)) {
  62       *error = ErrorUtils::FormatErrorMessageUTF16(
  63           errors::kInvalidNaClModulesPath, base::IntToString(i));
  64       return false;
  65     }
  66
  67     // Get nacl_modules[i].mime_type.
  68     std::string mime_type;
  69     if (!module_value->GetString(keys::kNaClModulesMIMEType, &mime_type)) {
  70       *error = ErrorUtils::FormatErrorMessageUTF16(
  71           errors::kInvalidNaClModulesMIMEType, base::IntToString(i));
  72       return false;
  73     }
  74
  75     nacl_module_data->nacl_modules_.push_back(NaClModuleInfo());
  76     nacl_module_data->nacl_modules_.back().url =
  77         extension->GetResourceURL(path_str);
  78     nacl_module_data->nacl_modules_.back().mime_type = mime_type;
  79   }
  80
  81   extension->SetManifestData(keys::kNaClModules, nacl_module_data.release());
  82   return true;
  83 }
  84
  85 const std::vector<std::string> NaClModulesHandler::Keys() const {
  86   return SingleKey(keys::kNaClModules);
  87 }
  88
  89 }  // namespace extensions