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      1 // Copyright 2013 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 "chrome/common/extensions/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 "chrome/common/extensions/extension_manifest_constants.h"
     13 #include "extensions/common/error_utils.h"
     14 
     15 namespace extensions {
     16 
     17 namespace keys = extension_manifest_keys;
     18 namespace errors = extension_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,
     44                                string16* error) {
     45   const base::ListValue* list_value = NULL;
     46   if (!extension->manifest()->GetList(keys::kNaClModules, &list_value)) {
     47     *error = ASCIIToUTF16(errors::kInvalidNaClModules);
     48     return false;
     49   }
     50 
     51   scoped_ptr<NaClModuleData> nacl_module_data(new NaClModuleData);
     52 
     53   for (size_t i = 0; i < list_value->GetSize(); ++i) {
     54     const base::DictionaryValue* module_value = NULL;
     55     if (!list_value->GetDictionary(i, &module_value)) {
     56       *error = ASCIIToUTF16(errors::kInvalidNaClModules);
     57       return false;
     58     }
     59 
     60     // Get nacl_modules[i].path.
     61     std::string path_str;
     62     if (!module_value->GetString(keys::kNaClModulesPath, &path_str)) {
     63       *error = ErrorUtils::FormatErrorMessageUTF16(
     64           errors::kInvalidNaClModulesPath, base::IntToString(i));
     65       return false;
     66     }
     67 
     68     // Get nacl_modules[i].mime_type.
     69     std::string mime_type;
     70     if (!module_value->GetString(keys::kNaClModulesMIMEType, &mime_type)) {
     71       *error = ErrorUtils::FormatErrorMessageUTF16(
     72           errors::kInvalidNaClModulesMIMEType, base::IntToString(i));
     73       return false;
     74     }
     75 
     76     nacl_module_data->nacl_modules_.push_back(NaClModuleInfo());
     77     nacl_module_data->nacl_modules_.back().url =
     78         extension->GetResourceURL(path_str);
     79     nacl_module_data->nacl_modules_.back().mime_type = mime_type;
     80   }
     81 
     82   extension->SetManifestData(keys::kNaClModules, nacl_module_data.release());
     83   return true;
     84 }
     85 
     86 const std::vector<std::string> NaClModulesHandler::Keys() const {
     87   return SingleKey(keys::kNaClModules);
     88 }
     89 
     90 }  // namespace extensions
     91