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https://github.com/RGBCube/serenity
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eeddaa988a
This API lets applications specify which configuration domains they will be accessing throughout their lifetime. It works similarly in spirit to the kernel's pledge(). You cannot pledge_domains() more than once, and once you have used it, it's no longer possible to access any other configuration domain. This is obviously just a first cut of this mechanism, and we may need to tweak it further as we go.
111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ClientConnection.h"
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#include <ConfigServer/ConfigClientEndpoint.h>
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#include <LibCore/ConfigFile.h>
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namespace ConfigServer {
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static HashMap<int, RefPtr<ClientConnection>> s_connections;
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ClientConnection::ClientConnection(NonnullRefPtr<Core::LocalSocket> client_socket, int client_id)
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: IPC::ClientConnection<ConfigClientEndpoint, ConfigServerEndpoint>(*this, move(client_socket), client_id)
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{
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s_connections.set(client_id, *this);
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}
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ClientConnection::~ClientConnection()
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{
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}
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void ClientConnection::die()
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{
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s_connections.remove(client_id());
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}
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void ClientConnection::pledge_domains(Vector<String> const& domains)
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{
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if (m_has_pledged) {
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did_misbehave("Tried to pledge domains twice.");
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return;
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}
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m_has_pledged = true;
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for (auto& domain : domains)
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m_pledged_domains.set(domain);
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}
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bool ClientConnection::validate_access(String const& domain, String const& group, String const& key)
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{
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if (!m_has_pledged)
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return true;
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if (m_pledged_domains.contains(domain))
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return true;
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did_misbehave(String::formatted("Blocked attempt to access domain '{}', group={}, key={}", domain, group, key).characters());
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return false;
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}
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Messages::ConfigServer::ReadStringValueResponse ClientConnection::read_string_value(String const& domain, String const& group, String const& key)
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{
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if (!validate_access(domain, group, key))
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return nullptr;
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auto config = Core::ConfigFile::open_for_app(domain);
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if (!config->has_key(group, key))
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return Optional<String> {};
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return Optional<String> { config->read_entry(group, key) };
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}
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Messages::ConfigServer::ReadI32ValueResponse ClientConnection::read_i32_value(String const& domain, String const& group, String const& key)
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{
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if (!validate_access(domain, group, key))
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return nullptr;
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auto config = Core::ConfigFile::open_for_app(domain);
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if (!config->has_key(group, key))
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return Optional<i32> {};
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return Optional<i32> { config->read_num_entry(group, key) };
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}
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Messages::ConfigServer::ReadBoolValueResponse ClientConnection::read_bool_value(String const& domain, String const& group, String const& key)
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{
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if (!validate_access(domain, group, key))
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return nullptr;
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auto config = Core::ConfigFile::open_for_app(domain);
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if (!config->has_key(group, key))
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return Optional<bool> {};
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return Optional<bool> { config->read_bool_entry(group, key) };
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}
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void ClientConnection::write_string_value(String const& domain, String const& group, String const& key, String const& value)
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{
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if (!validate_access(domain, group, key))
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return;
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auto config = Core::ConfigFile::open_for_app(domain, Core::ConfigFile::AllowWriting::Yes);
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config->write_entry(group, key, value);
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}
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void ClientConnection::write_i32_value(String const& domain, String const& group, String const& key, i32 value)
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{
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if (!validate_access(domain, group, key))
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return;
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auto config = Core::ConfigFile::open_for_app(domain, Core::ConfigFile::AllowWriting::Yes);
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config->write_num_entry(group, key, value);
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}
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void ClientConnection::write_bool_value(String const& domain, String const& group, String const& key, bool value)
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{
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if (!validate_access(domain, group, key))
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return;
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auto config = Core::ConfigFile::open_for_app(domain, Core::ConfigFile::AllowWriting::Yes);
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config->write_bool_entry(group, key, value);
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}
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}
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