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// Copyright 2015 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 "components/permissions/chooser_context_base.h"
#include <utility>
#include "base/values.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "url/origin.h"
namespace permissions {
const char kObjectListKey[] = "chosen-objects";
ChooserContextBase::ChooserContextBase(
const ContentSettingsType guard_content_settings_type,
const ContentSettingsType data_content_settings_type,
HostContentSettingsMap* host_content_settings_map)
: guard_content_settings_type_(guard_content_settings_type),
data_content_settings_type_(data_content_settings_type),
host_content_settings_map_(host_content_settings_map) {
DCHECK(host_content_settings_map_);
}
ChooserContextBase::~ChooserContextBase() = default;
ChooserContextBase::Object::Object(
const url::Origin& requesting_origin,
const base::Optional<url::Origin>& embedding_origin,
base::Value value,
content_settings::SettingSource source,
bool incognito)
: requesting_origin(requesting_origin.GetURL()),
embedding_origin(embedding_origin ? embedding_origin->GetURL() : GURL()),
value(std::move(value)),
source(source),
incognito(incognito) {}
ChooserContextBase::Object::~Object() = default;
void ChooserContextBase::PermissionObserver::OnChooserObjectPermissionChanged(
ContentSettingsType data_content_settings_type,
ContentSettingsType guard_content_settings_type) {}
void ChooserContextBase::PermissionObserver::OnPermissionRevoked(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin) {}
void ChooserContextBase::AddObserver(PermissionObserver* observer) {
permission_observer_list_.AddObserver(observer);
}
void ChooserContextBase::RemoveObserver(PermissionObserver* observer) {
permission_observer_list_.RemoveObserver(observer);
}
bool ChooserContextBase::CanRequestObjectPermission(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin) {
ContentSetting content_setting =
host_content_settings_map_->GetContentSetting(
requesting_origin.GetURL(), embedding_origin.GetURL(),
guard_content_settings_type_, std::string());
DCHECK(content_setting == CONTENT_SETTING_ASK ||
content_setting == CONTENT_SETTING_BLOCK);
return content_setting == CONTENT_SETTING_ASK;
}
std::vector<std::unique_ptr<ChooserContextBase::Object>>
ChooserContextBase::GetGrantedObjects(const url::Origin& requesting_origin,
const url::Origin& embedding_origin) {
if (!CanRequestObjectPermission(requesting_origin, embedding_origin))
return {};
content_settings::SettingInfo info;
base::Value setting =
GetWebsiteSetting(requesting_origin, embedding_origin, &info);
base::Value* objects = setting.FindListKey(kObjectListKey);
if (!objects)
return {};
std::vector<std::unique_ptr<Object>> results;
for (auto& object : objects->GetList()) {
if (IsValidObject(object)) {
results.push_back(std::make_unique<Object>(
requesting_origin, embedding_origin, std::move(object), info.source,
host_content_settings_map_->IsOffTheRecord()));
}
}
return results;
}
std::vector<std::unique_ptr<ChooserContextBase::Object>>
ChooserContextBase::GetAllGrantedObjects() {
ContentSettingsForOneType content_settings;
host_content_settings_map_->GetSettingsForOneType(
data_content_settings_type_, std::string(), &content_settings);
std::vector<std::unique_ptr<Object>> results;
for (const ContentSettingPatternSource& content_setting : content_settings) {
GURL requesting_origin_url(content_setting.primary_pattern.ToString());
GURL embedding_origin_url(content_setting.secondary_pattern.ToString());
if (!requesting_origin_url.is_valid() || !embedding_origin_url.is_valid())
continue;
const auto requesting_origin = url::Origin::Create(requesting_origin_url);
const auto embedding_origin = url::Origin::Create(embedding_origin_url);
if (!CanRequestObjectPermission(requesting_origin, embedding_origin))
continue;
content_settings::SettingInfo info;
base::Value setting =
GetWebsiteSetting(requesting_origin, embedding_origin, &info);
base::Value* objects = setting.FindListKey(kObjectListKey);
if (!objects)
continue;
for (auto& object : objects->GetList()) {
if (!IsValidObject(object)) {
continue;
}
results.push_back(std::make_unique<Object>(
requesting_origin, embedding_origin, std::move(object), info.source,
content_setting.incognito));
}
}
return results;
}
void ChooserContextBase::GrantObjectPermission(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin,
base::Value object) {
DCHECK(IsValidObject(object));
base::Value setting =
GetWebsiteSetting(requesting_origin, embedding_origin, /*info=*/nullptr);
base::Value* objects = setting.FindListKey(kObjectListKey);
if (!objects) {
objects =
setting.SetKey(kObjectListKey, base::Value(base::Value::Type::LIST));
}
if (!base::Contains(objects->GetList(), object))
objects->Append(std::move(object));
SetWebsiteSetting(requesting_origin, embedding_origin, std::move(setting));
NotifyPermissionChanged();
}
void ChooserContextBase::UpdateObjectPermission(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin,
const base::Value& old_object,
base::Value new_object) {
base::Value setting =
GetWebsiteSetting(requesting_origin, embedding_origin, /*info=*/nullptr);
base::Value* objects = setting.FindListKey(kObjectListKey);
if (!objects)
return;
base::Value::ListView object_list = objects->GetList();
auto it = std::find(object_list.begin(), object_list.end(), old_object);
if (it == object_list.end())
return;
*it = std::move(new_object);
SetWebsiteSetting(requesting_origin, embedding_origin, std::move(setting));
NotifyPermissionChanged();
}
void ChooserContextBase::RevokeObjectPermission(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin,
const base::Value& object) {
DCHECK(IsValidObject(object));
base::Value setting =
GetWebsiteSetting(requesting_origin, embedding_origin, /*info=*/nullptr);
base::Value* objects = setting.FindListKey(kObjectListKey);
if (!objects)
return;
base::Value::ListView object_list = objects->GetList();
auto it = std::find(object_list.begin(), object_list.end(), object);
if (it != object_list.end())
objects->EraseListIter(it);
SetWebsiteSetting(requesting_origin, embedding_origin, std::move(setting));
NotifyPermissionRevoked(requesting_origin, embedding_origin);
}
bool ChooserContextBase::IsOffTheRecord() {
return host_content_settings_map_->IsOffTheRecord();
}
void ChooserContextBase::NotifyPermissionChanged() {
for (auto& observer : permission_observer_list_) {
observer.OnChooserObjectPermissionChanged(guard_content_settings_type_,
data_content_settings_type_);
}
}
void ChooserContextBase::NotifyPermissionRevoked(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin) {
for (auto& observer : permission_observer_list_) {
observer.OnChooserObjectPermissionChanged(guard_content_settings_type_,
data_content_settings_type_);
observer.OnPermissionRevoked(requesting_origin, embedding_origin);
}
}
base::Value ChooserContextBase::GetWebsiteSetting(
const url::Origin& requesting_origin,
const url::Origin& embedding_origin,
content_settings::SettingInfo* info) {
std::unique_ptr<base::Value> value =
host_content_settings_map_->GetWebsiteSetting(
requesting_origin.GetURL(), embedding_origin.GetURL(),
data_content_settings_type_, std::string(), info);
if (value)
return base::Value::FromUniquePtrValue(std::move(value));
return base::Value(base::Value::Type::DICTIONARY);
}
void ChooserContextBase::SetWebsiteSetting(const url::Origin& requesting_origin,
const url::Origin& embedding_origin,
base::Value value) {
host_content_settings_map_->SetWebsiteSettingDefaultScope(
requesting_origin.GetURL(), embedding_origin.GetURL(),
data_content_settings_type_, std::string(),
base::Value::ToUniquePtrValue(std::move(value)));
}
} // namespace permissions
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