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e2f32b8f9d
Instead of everyone overriding save_to() and set_property() and doing a pretty asymmetric job of implementing the various properties, let's add a bit of structure here. Object properties are now represented by a Core::Property. Properties are registered with a getter and setter (optional) in constructors. I've added some convenience macros for creating and registering properties, but this does still feel a bit bulky. We'll have to iterate on this and see where it goes.
102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <LibCore/ElapsedTimer.h>
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#include <LibCore/Notifier.h>
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#include <LibCore/Object.h>
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class Service final : public Core::Object {
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C_OBJECT(Service)
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public:
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bool is_enabled() const;
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void activate();
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void did_exit(int exit_code);
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static Service* find_by_pid(pid_t);
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// FIXME: Port to Core::Property
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void save_to(AK::JsonObject&);
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private:
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Service(const Core::ConfigFile&, const StringView& name);
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void spawn(int socket_fd = -1);
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// Path to the executable. By default this is /bin/{m_name}.
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String m_executable_path;
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// Extra arguments, starting from argv[1], to pass when exec'ing.
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Vector<String> m_extra_arguments;
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// File path to open as stdio fds.
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String m_stdio_file_path;
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int m_priority { 1 };
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// Whether we should re-launch it if it exits.
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bool m_keep_alive { false };
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// Path to the socket to create and listen on on behalf of this service.
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String m_socket_path;
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// File system permissions for the socket.
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mode_t m_socket_permissions { 0 };
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// Whether we should accept connections on the socket and pass the accepted
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// (and not listening) socket to the service. This requires a multi-instance
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// service.
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bool m_accept_socket_connections { false };
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// Whether we should only spawn this service once somebody connects to the socket.
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bool m_lazy;
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// The name of the user we should run this service as.
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String m_user;
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uid_t m_uid { 0 };
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gid_t m_gid { 0 };
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Vector<gid_t> m_extra_gids;
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// The working directory in which to spawn the service.
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String m_working_directory;
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// Boot modes to run this service in. By default, this is the graphical mode.
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Vector<String> m_boot_modes;
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// Whether several instances of this service can run at once.
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bool m_multi_instance { false };
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// Environment variables to pass to the service.
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Vector<String> m_environment;
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// For single-instance services, PID of the running instance of this service.
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pid_t m_pid { -1 };
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// An open fd to the socket.
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int m_socket_fd { -1 };
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RefPtr<Core::Notifier> m_socket_notifier;
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// Timer since we last spawned the service.
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Core::ElapsedTimer m_run_timer;
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// How many times we have tried to restart this service, only counting those
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// times where it has exited unsuccessfully and too quickly.
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int m_restart_attempts { 0 };
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void resolve_user();
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void setup_socket();
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void setup_notifier();
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void handle_socket_connection();
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};
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