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.
5 #include "extensions/common/manifest_handlers/shared_module_info.h"
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/string_util.h"
11 #include "base/strings/utf_string_conversions.h"
12 #include "base/version.h"
13 #include "extensions/common/constants.h"
14 #include "extensions/common/error_utils.h"
15 #include "extensions/common/manifest_constants.h"
16 #include "extensions/common/permissions/permission_set.h"
18 namespace extensions {
20 namespace keys = manifest_keys;
21 namespace values = manifest_values;
22 namespace errors = manifest_errors;
26 const char kSharedModule[] = "shared_module";
28 static base::LazyInstance<SharedModuleInfo> g_empty_shared_module_info =
29 LAZY_INSTANCE_INITIALIZER;
31 const SharedModuleInfo& GetSharedModuleInfo(const Extension* extension) {
32 SharedModuleInfo* info = static_cast<SharedModuleInfo*>(
33 extension->GetManifestData(kSharedModule));
35 return g_empty_shared_module_info.Get();
41 SharedModuleInfo::SharedModuleInfo() {
44 SharedModuleInfo::~SharedModuleInfo() {
48 void SharedModuleInfo::ParseImportedPath(const std::string& path,
49 std::string* import_id,
50 std::string* import_relative_path) {
51 std::vector<std::string> tokens;
52 Tokenize(path, std::string("/"), &tokens);
53 if (tokens.size() > 2 && tokens[0] == kModulesDir &&
54 Extension::IdIsValid(tokens[1])) {
55 *import_id = tokens[1];
56 *import_relative_path = tokens[2];
57 for (size_t i = 3; i < tokens.size(); ++i)
58 *import_relative_path += "/" + tokens[i];
63 bool SharedModuleInfo::IsImportedPath(const std::string& path) {
64 std::vector<std::string> tokens;
65 Tokenize(path, std::string("/"), &tokens);
66 if (tokens.size() > 2 && tokens[0] == kModulesDir &&
67 Extension::IdIsValid(tokens[1])) {
74 bool SharedModuleInfo::IsSharedModule(const Extension* extension) {
76 return extension->manifest()->is_shared_module();
80 bool SharedModuleInfo::IsExportAllowed(const Extension* extension,
81 const std::string& relative_path) {
82 return GetSharedModuleInfo(extension).
83 exported_set_.MatchesURL(extension->url().Resolve(relative_path));
87 bool SharedModuleInfo::IsExportAllowedByWhitelist(const Extension* extension,
88 const std::string& other_id) {
89 const SharedModuleInfo& info = GetSharedModuleInfo(extension);
90 if (info.export_whitelist_.empty())
92 if (info.export_whitelist_.find(other_id) != info.export_whitelist_.end())
98 bool SharedModuleInfo::ImportsExtensionById(const Extension* extension,
99 const std::string& other_id) {
100 const SharedModuleInfo& info = GetSharedModuleInfo(extension);
101 for (size_t i = 0; i < info.imports_.size(); i++) {
102 if (info.imports_[i].extension_id == other_id)
109 bool SharedModuleInfo::ImportsModules(const Extension* extension) {
110 return GetSharedModuleInfo(extension).imports_.size() > 0;
114 const std::vector<SharedModuleInfo::ImportInfo>& SharedModuleInfo::GetImports(
115 const Extension* extension) {
116 return GetSharedModuleInfo(extension).imports_;
119 bool SharedModuleInfo::Parse(const Extension* extension,
120 base::string16* error) {
121 bool has_import = extension->manifest()->HasKey(keys::kImport);
122 bool has_export = extension->manifest()->HasKey(keys::kExport);
123 if (!has_import && !has_export)
126 if (has_import && has_export) {
127 *error = base::ASCIIToUTF16(errors::kInvalidImportAndExport);
132 const base::DictionaryValue* export_value = NULL;
133 if (!extension->manifest()->GetDictionary(keys::kExport, &export_value)) {
134 *error = base::ASCIIToUTF16(errors::kInvalidExport);
137 const base::ListValue* resources_list = NULL;
138 if (!export_value->GetList(keys::kResources, &resources_list)) {
139 *error = base::ASCIIToUTF16(errors::kInvalidExportResources);
142 if (export_value->HasKey(keys::kWhitelist)) {
143 const base::ListValue* whitelist = NULL;
144 if (!export_value->GetList(keys::kWhitelist, &whitelist)) {
145 *error = base::ASCIIToUTF16(errors::kInvalidExportWhitelist);
148 for (size_t i = 0; i < whitelist->GetSize(); ++i) {
149 std::string extension_id;
150 if (!whitelist->GetString(i, &extension_id) ||
151 !Extension::IdIsValid(extension_id)) {
152 *error = ErrorUtils::FormatErrorMessageUTF16(
153 errors::kInvalidExportWhitelistString, base::IntToString(i));
156 export_whitelist_.insert(extension_id);
159 for (size_t i = 0; i < resources_list->GetSize(); ++i) {
160 std::string resource_path;
161 if (!resources_list->GetString(i, &resource_path)) {
162 *error = ErrorUtils::FormatErrorMessageUTF16(
163 errors::kInvalidExportResourcesString, base::IntToString(i));
166 const GURL& resolved_path = extension->url().Resolve(resource_path);
167 if (!resolved_path.is_valid()) {
168 *error = ErrorUtils::FormatErrorMessageUTF16(
169 errors::kInvalidExportResourcesString, base::IntToString(i));
172 exported_set_.AddPattern(
173 URLPattern(URLPattern::SCHEME_EXTENSION, resolved_path.spec()));
178 const base::ListValue* import_list = NULL;
179 if (!extension->manifest()->GetList(keys::kImport, &import_list)) {
180 *error = base::ASCIIToUTF16(errors::kInvalidImport);
183 for (size_t i = 0; i < import_list->GetSize(); ++i) {
184 const base::DictionaryValue* import_entry = NULL;
185 if (!import_list->GetDictionary(i, &import_entry)) {
186 *error = base::ASCIIToUTF16(errors::kInvalidImport);
189 std::string extension_id;
190 imports_.push_back(ImportInfo());
191 if (!import_entry->GetString(keys::kId, &extension_id) ||
192 !Extension::IdIsValid(extension_id)) {
193 *error = ErrorUtils::FormatErrorMessageUTF16(
194 errors::kInvalidImportId, base::IntToString(i));
197 imports_.back().extension_id = extension_id;
198 if (import_entry->HasKey(keys::kMinimumVersion)) {
199 std::string min_version;
200 if (!import_entry->GetString(keys::kMinimumVersion, &min_version)) {
201 *error = ErrorUtils::FormatErrorMessageUTF16(
202 errors::kInvalidImportVersion, base::IntToString(i));
205 imports_.back().minimum_version = min_version;
206 Version v(min_version);
208 *error = ErrorUtils::FormatErrorMessageUTF16(
209 errors::kInvalidImportVersion, base::IntToString(i));
219 SharedModuleHandler::SharedModuleHandler() {
222 SharedModuleHandler::~SharedModuleHandler() {
225 bool SharedModuleHandler::Parse(Extension* extension, base::string16* error) {
226 scoped_ptr<SharedModuleInfo> info(new SharedModuleInfo);
227 if (!info->Parse(extension, error))
229 extension->SetManifestData(kSharedModule, info.release());
233 bool SharedModuleHandler::Validate(
234 const Extension* extension,
236 std::vector<InstallWarning>* warnings) const {
237 // Extensions that export resources should not have any permissions of their
238 // own, instead they rely on the permissions of the extensions which import
240 if (SharedModuleInfo::IsSharedModule(extension) &&
241 !extension->GetActivePermissions()->IsEmpty()) {
242 *error = errors::kInvalidExportPermissions;
248 const std::vector<std::string> SharedModuleHandler::Keys() const {
249 static const char* keys[] = {
253 return std::vector<std::string>(keys, keys + arraysize(keys));
256 } // namespace extensions