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/api/storage/storage_schema_manifest_handler.h"
6
7#include <string>
8#include <vector>
9
10#include "base/files/file_path.h"
11#include "base/files/file_util.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/strings/string16.h"
14#include "base/strings/stringprintf.h"
15#include "base/strings/utf_string_conversions.h"
16#include "extensions/common/extension.h"
17#include "extensions/common/install_warning.h"
18#include "extensions/common/manifest.h"
19#include "extensions/common/manifest_constants.h"
20#include "extensions/common/manifest_handlers/permissions_parser.h"
21#include "extensions/common/permissions/api_permission.h"
22#include "extensions/common/permissions/api_permission_set.h"
23#include "extensions/common/permissions/permissions_info.h"
24
25#if defined(ENABLE_CONFIGURATION_POLICY)
26#include "components/policy/core/common/schema.h"
27#endif
28
29using extensions::manifest_keys::kStorageManagedSchema;
30
31namespace extensions {
32
33StorageSchemaManifestHandler::StorageSchemaManifestHandler() {}
34
35StorageSchemaManifestHandler::~StorageSchemaManifestHandler() {}
36
37#if defined(ENABLE_CONFIGURATION_POLICY)
38// static
39policy::Schema StorageSchemaManifestHandler::GetSchema(
40    const Extension* extension,
41    std::string* error) {
42  std::string path;
43  extension->manifest()->GetString(kStorageManagedSchema, &path);
44  base::FilePath file = base::FilePath::FromUTF8Unsafe(path);
45  if (file.IsAbsolute() || file.ReferencesParent()) {
46    *error = base::StringPrintf("%s must be a relative path without ..",
47                                kStorageManagedSchema);
48    return policy::Schema();
49  }
50  file = extension->path().AppendASCII(path);
51  if (!base::PathExists(file)) {
52    *error =
53        base::StringPrintf("File does not exist: %s", file.value().c_str());
54    return policy::Schema();
55  }
56  std::string content;
57  if (!base::ReadFileToString(file, &content)) {
58    *error = base::StringPrintf("Can't read %s", file.value().c_str());
59    return policy::Schema();
60  }
61  return policy::Schema::Parse(content, error);
62}
63#endif
64
65bool StorageSchemaManifestHandler::Parse(Extension* extension,
66                                         base::string16* error) {
67  std::string path;
68  if (!extension->manifest()->GetString(kStorageManagedSchema, &path)) {
69    *error = base::ASCIIToUTF16(
70        base::StringPrintf("%s must be a string", kStorageManagedSchema));
71    return false;
72  }
73
74  // If an extension declares the "storage.managed_schema" key then it gets
75  // the "storage" permission implicitly.
76  PermissionsParser::AddAPIPermission(extension, APIPermission::kStorage);
77
78  return true;
79}
80
81bool StorageSchemaManifestHandler::Validate(
82    const Extension* extension,
83    std::string* error,
84    std::vector<InstallWarning>* warnings) const {
85#if defined(ENABLE_CONFIGURATION_POLICY)
86  return GetSchema(extension, error).valid();
87#else
88  return true;
89#endif
90}
91
92const std::vector<std::string> StorageSchemaManifestHandler::Keys() const {
93  return SingleKey(kStorageManagedSchema);
94}
95
96}  // namespace extensions
97