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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/common/manifest_handlers/kiosk_mode_info.h"
#include <memory>
#include <set>
#include <utility>
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "base/version.h"
#include "extensions/common/api/extensions_manifest_types.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/features/behavior_feature.h"
#include "extensions/common/features/feature.h"
#include "extensions/common/features/feature_provider.h"
#include "extensions/common/manifest_constants.h"
namespace extensions {
namespace keys = manifest_keys;
using api::extensions_manifest_types::KioskSecondaryAppsType;
namespace {
// Whether "enabled_on_launch" manifest property for the extension should be
// respected or not. If false, secondary apps that specify this property will
// be ignored.
bool AllowSecondaryAppEnabledOnLaunch(const Extension* extension) {
if (!extension)
return false;
const Feature* feature = FeatureProvider::GetBehaviorFeatures()->GetFeature(
behavior_feature::kAllowSecondaryKioskAppEnabledOnLaunch);
if (!feature)
return false;
return feature->IsAvailableToExtension(extension).is_available();
}
} // namespace
SecondaryKioskAppInfo::SecondaryKioskAppInfo(
const extensions::ExtensionId& id,
const base::Optional<bool>& enabled_on_launch)
: id(id), enabled_on_launch(enabled_on_launch) {}
SecondaryKioskAppInfo::SecondaryKioskAppInfo(
const SecondaryKioskAppInfo& other) = default;
SecondaryKioskAppInfo::~SecondaryKioskAppInfo() = default;
KioskModeInfo::KioskModeInfo(
KioskStatus kiosk_status,
std::vector<SecondaryKioskAppInfo>&& secondary_apps,
const std::string& required_platform_version,
bool always_update)
: kiosk_status(kiosk_status),
secondary_apps(std::move(secondary_apps)),
required_platform_version(required_platform_version),
always_update(always_update) {}
KioskModeInfo::~KioskModeInfo() {
}
// static
KioskModeInfo* KioskModeInfo::Get(const Extension* extension) {
return static_cast<KioskModeInfo*>(
extension->GetManifestData(keys::kKioskMode));
}
// static
bool KioskModeInfo::IsKioskEnabled(const Extension* extension) {
KioskModeInfo* info = Get(extension);
return info ? info->kiosk_status != NONE : false;
}
// static
bool KioskModeInfo::IsKioskOnly(const Extension* extension) {
KioskModeInfo* info = Get(extension);
return info ? info->kiosk_status == ONLY : false;
}
// static
bool KioskModeInfo::HasSecondaryApps(const Extension* extension) {
KioskModeInfo* info = Get(extension);
return info && !info->secondary_apps.empty();
}
// static
bool KioskModeInfo::IsValidPlatformVersion(const std::string& version_string) {
const base::Version version(version_string);
return version.IsValid() && version.components().size() <= 3u;
}
KioskModeHandler::KioskModeHandler() {
}
KioskModeHandler::~KioskModeHandler() {
}
bool KioskModeHandler::Parse(Extension* extension, base::string16* error) {
const Manifest* manifest = extension->manifest();
DCHECK(manifest->HasKey(keys::kKioskEnabled) ||
manifest->HasKey(keys::kKioskOnly));
bool kiosk_enabled = false;
if (manifest->HasKey(keys::kKioskEnabled) &&
!manifest->GetBoolean(keys::kKioskEnabled, &kiosk_enabled)) {
*error = base::ASCIIToUTF16(manifest_errors::kInvalidKioskEnabled);
return false;
}
bool kiosk_only = false;
if (manifest->HasKey(keys::kKioskOnly) &&
!manifest->GetBoolean(keys::kKioskOnly, &kiosk_only)) {
*error = base::ASCIIToUTF16(manifest_errors::kInvalidKioskOnly);
return false;
}
if (kiosk_only && !kiosk_enabled) {
*error = base::ASCIIToUTF16(
manifest_errors::kInvalidKioskOnlyButNotEnabled);
return false;
}
// All other use cases should be already filtered out by manifest feature
// checks.
DCHECK(extension->is_platform_app());
KioskModeInfo::KioskStatus kiosk_status = KioskModeInfo::NONE;
if (kiosk_enabled)
kiosk_status = kiosk_only ? KioskModeInfo::ONLY : KioskModeInfo::ENABLED;
// Kiosk secondary apps key is optional.
std::vector<SecondaryKioskAppInfo> secondary_apps;
std::set<std::string> secondary_app_ids;
if (manifest->HasKey(keys::kKioskSecondaryApps)) {
const base::Value* secondary_apps_value = nullptr;
if (!manifest->GetList(keys::kKioskSecondaryApps, &secondary_apps_value)) {
*error = base::ASCIIToUTF16(manifest_errors::kInvalidKioskSecondaryApps);
return false;
}
const base::Value::ListStorage& list = secondary_apps_value->GetList();
const bool allow_enabled_on_launch =
AllowSecondaryAppEnabledOnLaunch(extension);
for (const auto& value : list) {
std::unique_ptr<KioskSecondaryAppsType> app =
KioskSecondaryAppsType::FromValue(value, error);
if (!app) {
*error = base::ASCIIToUTF16(
manifest_errors::kInvalidKioskSecondaryAppsBadAppEntry);
return false;
}
if (secondary_app_ids.count(app->id)) {
*error = ErrorUtils::FormatErrorMessageUTF16(
manifest_errors::kInvalidKioskSecondaryAppsDuplicateApp, app->id);
return false;
}
if (app->enabled_on_launch && !allow_enabled_on_launch) {
*error = ErrorUtils::FormatErrorMessageUTF16(
manifest_errors::kInvalidKioskSecondaryAppsPropertyUnavailable,
"enabled_on_launch", app->id);
return false;
}
base::Optional<bool> enabled_on_launch;
if (app->enabled_on_launch)
enabled_on_launch = *app->enabled_on_launch;
secondary_apps.emplace_back(app->id, enabled_on_launch);
secondary_app_ids.insert(app->id);
}
}
// Optional kiosk.required_platform_version key.
std::string required_platform_version;
if (manifest->HasPath(keys::kKioskRequiredPlatformVersion) &&
(!manifest->GetString(keys::kKioskRequiredPlatformVersion,
&required_platform_version) ||
!KioskModeInfo::IsValidPlatformVersion(required_platform_version))) {
*error = base::ASCIIToUTF16(
manifest_errors::kInvalidKioskRequiredPlatformVersion);
return false;
}
// Optional kiosk.always_update key.
bool always_update = false;
if (manifest->HasPath(keys::kKioskAlwaysUpdate) &&
!manifest->GetBoolean(keys::kKioskAlwaysUpdate, &always_update)) {
*error = base::ASCIIToUTF16(manifest_errors::kInvalidKioskAlwaysUpdate);
return false;
}
extension->SetManifestData(keys::kKioskMode,
std::make_unique<KioskModeInfo>(
kiosk_status, std::move(secondary_apps),
required_platform_version, always_update));
return true;
}
base::span<const char* const> KioskModeHandler::Keys() const {
static constexpr const char* kKeys[] = {keys::kKiosk, keys::kKioskEnabled,
keys::kKioskOnly,
keys::kKioskSecondaryApps};
return kKeys;
}
} // namespace extensions
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