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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/management_policy.h"
#include "base/logging.h"
namespace extensions {
namespace {
void GetExtensionNameAndId(const Extension* extension,
std::string* name,
std::string* id) {
// The extension may be NULL in testing.
*id = extension ? extension->id() : "[test]";
*name = extension ? extension->name() : "test";
}
} // namespace
ManagementPolicy::ManagementPolicy() {
}
ManagementPolicy::~ManagementPolicy() {
}
bool ManagementPolicy::Provider::UserMayLoad(const Extension* extension,
std::u16string* error) const {
return true;
}
bool ManagementPolicy::Provider::UserMayInstall(const Extension* extension,
std::u16string* error) const {
return UserMayLoad(extension, error);
}
bool ManagementPolicy::Provider::UserMayModifySettings(
const Extension* extension,
std::u16string* error) const {
return true;
}
bool ManagementPolicy::Provider::ExtensionMayModifySettings(
const Extension* source_extension,
const Extension* extension,
std::u16string* error) const {
return true;
}
bool ManagementPolicy::Provider::MustRemainEnabled(
const Extension* extension,
std::u16string* error) const {
return false;
}
bool ManagementPolicy::Provider::MustRemainDisabled(
const Extension* extension,
disable_reason::DisableReason* reason) const {
return false;
}
bool ManagementPolicy::Provider::MustRemainInstalled(
const Extension* extension,
std::u16string* error) const {
return false;
}
bool ManagementPolicy::Provider::ShouldForceUninstall(
const Extension* extension,
std::u16string* error) const {
return false;
}
void ManagementPolicy::RegisterProvider(Provider* provider) {
providers_.insert(provider);
}
void ManagementPolicy::UnregisterProvider(Provider* provider) {
providers_.erase(provider);
}
void ManagementPolicy::RegisterProviders(
const std::vector<std::unique_ptr<Provider>>& providers) {
for (const std::unique_ptr<Provider>& provider : providers)
providers_.insert(provider.get());
}
bool ManagementPolicy::UserMayLoad(const Extension* extension) const {
return ApplyToProviderList(&Provider::UserMayLoad, "Installation", true,
extension, /*error=*/nullptr);
}
bool ManagementPolicy::UserMayInstall(const Extension* extension,
std::u16string* error) const {
return ApplyToProviderList(&Provider::UserMayInstall, "Installation", true,
extension, error);
}
bool ManagementPolicy::UserMayModifySettings(const Extension* extension,
std::u16string* error) const {
return ApplyToProviderList(
&Provider::UserMayModifySettings, "Modification", true, extension, error);
}
bool ManagementPolicy::ExtensionMayModifySettings(
const Extension* source_extension,
const Extension* extension,
std::u16string* error) const {
for (const Provider* provider : providers_) {
if (!provider->ExtensionMayModifySettings(source_extension, extension,
error)) {
std::string id;
std::string name;
GetExtensionNameAndId(extension, &name, &id);
DVLOG(1) << "Modification of extension " << name << " (" << id << ")"
<< " prohibited by " << provider->GetDebugPolicyProviderName();
return false;
}
}
return true;
}
bool ManagementPolicy::MustRemainEnabled(const Extension* extension,
std::u16string* error) const {
return ApplyToProviderList(
&Provider::MustRemainEnabled, "Disabling", false, extension, error);
}
bool ManagementPolicy::MustRemainDisabled(
const Extension* extension,
disable_reason::DisableReason* reason) const {
if (!UserMayLoad(extension)) {
if (reason) {
*reason = disable_reason::DISABLE_BLOCKED_BY_POLICY;
}
return true;
}
for (const auto& provider : providers_) {
if (provider->MustRemainDisabled(extension, reason)) {
return true;
}
}
return false;
}
bool ManagementPolicy::MustRemainInstalled(const Extension* extension,
std::u16string* error) const {
return ApplyToProviderList(
&Provider::MustRemainInstalled, "Removing", false, extension, error);
}
bool ManagementPolicy::ShouldForceUninstall(const Extension* extension,
std::u16string* error) const {
return ApplyToProviderList(&Provider::ShouldForceUninstall, "Uninstalling",
false, extension, error);
}
bool ManagementPolicy::ShouldRepairIfCorrupted(const Extension* extension) {
return MustRemainEnabled(extension, nullptr) ||
MustRemainInstalled(extension, nullptr);
}
void ManagementPolicy::UnregisterAllProviders() {
providers_.clear();
}
int ManagementPolicy::GetNumProviders() const {
return providers_.size();
}
bool ManagementPolicy::ApplyToProviderList(ProviderFunction function,
const char* debug_operation_name,
bool normal_result,
const Extension* extension,
std::u16string* error) const {
for (const Provider* provider : providers_) {
bool result = (provider->*function)(extension, error);
if (result != normal_result) {
std::string id;
std::string name;
GetExtensionNameAndId(extension, &name, &id);
DVLOG(1) << debug_operation_name << " of extension " << name
<< " (" << id << ")"
<< " prohibited by " << provider->GetDebugPolicyProviderName();
return !normal_result;
}
}
return normal_result;
}
} // namespace extensions
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