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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/privacy_sandbox/privacy_sandbox_internals_handler.h"
#include "base/logging.h"
#include "chrome/browser/content_settings/cookie_settings_factory.h"
#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
#include "chrome/browser/ui/webui/privacy_sandbox/privacy_sandbox_internals.mojom.h"
#include "components/content_settings/core/browser/cookie_settings.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/browser/website_settings_info.h"
#include "components/content_settings/core/browser/website_settings_registry.h"
#include "components/content_settings/core/common/content_settings_pattern_parser.h"
#include "privacy_sandbox_internals_handler.h"
namespace privacy_sandbox_internals {
using ::content_settings::WebsiteSettingsRegistry;
PrivacySandboxInternalsHandler::PrivacySandboxInternalsHandler(
Profile* profile,
mojo::PendingReceiver<privacy_sandbox_internals::mojom::PageHandler>
pending_receiver)
: profile_(profile) {
receiver_.Bind(std::move(pending_receiver));
}
PrivacySandboxInternalsHandler::~PrivacySandboxInternalsHandler() = default;
// TODO(crbug.com/427457772): Evaluate making this function more performant by
// extending the PrefService API to read by prefix.
// TODO(crbug.com/427990026): Optimize performance of this with a trie.
//
// This method potentially allocates MBs of memory and should not be used
// outside of internals pages.
void PrivacySandboxInternalsHandler::ReadPrefsWithPrefixes(
const std::vector<std::string>& pref_prefixes,
ReadPrefsWithPrefixesCallback callback) {
// Empty strings and duplicates in the prefix list are considered invalid.
base::flat_set<std::string> prefixes_set(pref_prefixes);
if (prefixes_set.size() != pref_prefixes.size()) {
receiver_.ReportBadMessage("Duplicate prefixes are invalid.");
return;
}
if (prefixes_set.contains("")) {
receiver_.ReportBadMessage("Empty prefixes are invalid.");
return;
}
std::vector<PrefService::PreferenceValueAndStore> values =
profile_->GetPrefs()->GetPreferencesValueAndStore();
std::vector<privacy_sandbox_internals::mojom::PrivacySandboxInternalsPrefPtr>
filteredPrefs;
for (auto& [name, value, pref_value_store_type] : values) {
for (auto prefix : pref_prefixes) {
if (name.starts_with(prefix)) {
auto pref =
privacy_sandbox_internals::mojom::PrivacySandboxInternalsPref::New(
name, std::move(value));
filteredPrefs.push_back(std::move(pref));
break;
}
}
}
std::move(callback).Run(std::move(filteredPrefs));
}
void PrivacySandboxInternalsHandler::ReadContentSettings(
const ContentSettingsType type,
ReadContentSettingsCallback callback) {
if (!IsKnownEnumValue(type)) {
mojo::ReportBadMessage(
"ReadContentSettings received invalid ContentSettingsType");
return;
}
// HostContentSettingsMap will assert if we attempt to read unregistered
// content types, so for these types we simply return an empty list.
if (WebsiteSettingsRegistry::GetInstance()->Get(type) == nullptr) {
std::move(callback).Run({});
return;
}
HostContentSettingsMap* map =
HostContentSettingsMapFactory::GetForProfile(profile_);
std::move(callback).Run(map->GetSettingsForOneType(type));
}
void PrivacySandboxInternalsHandler::GetTpcdMetadataGrants(
GetTpcdMetadataGrantsCallback callback) {
content_settings::CookieSettings* cookie_settings =
CookieSettingsFactory::GetForProfile(profile_).get();
std::move(callback).Run(cookie_settings->GetTpcdMetadataGrants());
}
void PrivacySandboxInternalsHandler::ContentSettingsPatternToString(
const ContentSettingsPattern& pattern,
ContentSettingsPatternToStringCallback callback) {
std::move(callback).Run(pattern.ToString());
}
void PrivacySandboxInternalsHandler::StringToContentSettingsPattern(
const std::string& s,
StringToContentSettingsPatternCallback callback) {
std::move(callback).Run(ContentSettingsPattern::FromString(s));
}
} // namespace privacy_sandbox_internals
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