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Truly independent web browser
52790 commits 1 branch 0 tags 444 MiB
C++ 74.4%
HTML 14.3%
JavaScript 8.6%
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Sergey Bugaev 95bcffd713 Kernel/Net: Rework ephemeral port allocation 
Currently, ephemeral port allocation is handled by the
allocate_local_port_if_needed() and protocol_allocate_local_port()
methods. Actually binding the socket to an address (which means
inserting the socket/address pair into a global map) is performed either
in protocol_allocate_local_port() (for ephemeral ports) or in
protocol_listen() (for non-ephemeral ports); the latter will fail with
EADDRINUSE if the address is already used by an existing pair present in
the map.

There used to be a bug where for listen() without an explicit bind(),
the port allocation would conflict with itself: first an ephemeral port
would get allocated and inserted into the map, and then
protocol_listen() would check again for the port being free, find the
just-created map entry, and error out. This was fixed in commit
01e5af487f by passing an additional flag
did_allocate_port into protocol_listen() which specifies whether the
port was just allocated, and skipping the check in protocol_listen() if
the flag is set.

However, this only helps if the socket is bound to an ephemeral port
inside of this very listen() call. But calling bind(sin_port = 0) from
userspace should succeed and bind to an allocated ephemeral port, in the
same was as using an unbound socket for connect() does. The port number
can then be retrieved from userspace by calling getsockname (), and it
should be possible to either connect() or listen() on this socket,
keeping the allocated port number. Also, calling bind() when already
bound (either explicitly or implicitly) should always result in EINVAL.

To untangle this, introduce an explicit m_bound state in IPv4Socket,
just like LocalSocket has already. Once a socket is bound, further
attempt to bind it fail. Some operations cause the socket to implicitly
get bound to an (ephemeral) address; this is implemented by the new
ensure_bound() method. The protocol_allocate_local_port() method is
gone; it is now up to a protocol to assign a port to the socket inside
protocol_bind() if it finds that the socket has local_port() == 0.

protocol_bind() is now called in more cases, such as inside listen() if
the socket wasn't bound before that.
2023-07-29 16:51:58 -06:00
.devcontainer Meta: Switch to clang-format-16 as the standard formatter 2023-07-08 10:32:56 +01:00
.github LibJS+CI: Remove bytecode optimization passes for now 2023-07-21 19:47:36 +03:30
AK AK: Allow testing Empty instances for equality 2023-07-28 20:47:48 +03:30
Base LibWeb: Fix border painting with border-radius and zero-width sides 2023-07-26 08:38:54 +02:00
Documentation Documentation: Add a rough guide on setting up SPICE on Ubuntu 2023-07-18 21:59:14 +01:00
Kernel Kernel/Net: Rework ephemeral port allocation 2023-07-29 16:51:58 -06:00
Ladybird Ladybird: Ignore Qt preferred fonts and just load from our fallback list 2023-07-29 19:16:08 +02:00
Meta Meta: Use is instead of == to compare types 2023-07-29 23:23:25 +01:00
Ports Ports: Port gn 2023-07-29 09:42:20 -06:00
Tests LibWeb: Implement the CSS revert keyword 2023-07-29 19:16:08 +02:00
Toolchain Toolchain: Copy the same headers as GNU when building Clang 2023-07-19 00:19:35 -06:00
Userland Userland: Teach strace(1) to format pledge(2) 2023-07-29 16:51:58 -06:00
.clang-format Everywhere: Remove needless trailing semi-colons after functions 2023-07-08 10:32:56 +01:00
.clang-tidy Meta: Disable the misc-no-recursion check in clang-tidy 2023-03-18 16:34:41 +01:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes Repository: Protect port patches from CRLF/LF normalization 2022-01-12 01:08:38 +01:00
.gitignore Tests/LibWeb: Remove MANIFEST.json from WPT 2023-07-19 18:34:36 +02:00
.gn Meta: Add the start of a gn build based on the LLVM gn build 2023-07-09 16:22:58 -06:00
.mailmap Everywhere: Update copyrights with my new serenityos.org e-mail :^) 2023-07-15 16:21:29 +02:00
.pre-commit-config.yaml Meta: Add a post-commit commit message linter hook 2021-05-02 16:28:01 +02:00
.prettierignore LibJS: Add DisposableStack{, Prototype, Constructor} 2023-01-23 09:56:50 +00:00
.prettierrc Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
.ycm_extra_conf.py Meta: Remove i686 references in YCM configuration 2022-12-28 11:53:41 +01:00
azure-pipelines.yml CI: Remove extraneous toolchain job from Azure CI 2022-12-28 15:26:12 -05:00
CMakeLists.txt Toolchain+Ports: Update LLVM to 16.0.6 2023-06-27 12:40:38 +02:00
CONTRIBUTING.md Meta: Switch to clang-format-16 as the standard formatter 2023-07-08 10:32:56 +01:00
LICENSE Meta: Update the year range in LICENSE :^) 2023-01-01 09:38:07 +00:00
README.md README+Meta: Update the screenshot :^) 2023-07-14 23:40:58 +02:00
SECURITY.md Meta: Add a security policy 2022-06-29 03:29:27 +00:00

README.md

SerenityOS

Graphical Unix-like operating system for x86-64 computers.

GitHub Actions Status Azure DevOps Status Fuzzing Status Sonar Cube Static Analysis Discord

FAQ | Documentation | Build Instructions

About

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.

You can watch videos of the system being developed on YouTube:

Screenshot

Screenshot as of c03b788.png

Features

  • Modern x86 64-bit kernel with pre-emptive multi-threading
  • Browser with JavaScript, WebAssembly, and more (check the spec compliance for JS, CSS, and Wasm)
  • Security features (hardware protections, limited userland capabilities, W^X memory, pledge & unveil, (K)ASLR, OOM-resistance, web-content isolation, state-of-the-art TLS algorithms, ...)
  • System services (WindowServer, LoginServer, AudioServer, WebServer, RequestServer, CrashServer, ...) and modern IPC
  • Good POSIX compatibility (LibC, Shell, syscalls, signals, pseudoterminals, filesystem notifications, standard Unix utilities, ...)
  • POSIX-like virtual file systems (/proc, /dev, /sys, /tmp, ...) and ext2 file system
  • Network stack and applications with support for IPv4, TCP, UDP; DNS, HTTP, Gemini, IMAP, NTP
  • Profiling, debugging and other development tools (Kernel-supported profiling, detailed program analysis with software emulation in UserspaceEmulator, CrashReporter, interactive GUI playground, HexEditor, HackStudio IDE for C++ and more)
  • Libraries for everything from cryptography to OpenGL, audio, JavaScript, GUI, playing chess, ...
  • Support for many common and uncommon file formats (PNG, JPEG, GIF, MP3, WAV, FLAC, ZIP, TAR, PDF, QOI, Gemini, ...)
  • Unified style and design philosophy, flexible theming system, custom (bitmap and vector) fonts
  • Games (Solitaire, Minesweeper, 2048, chess, Conway's Game of Life, ...) and demos (CatDog, Starfield, Eyes, mandelbrot set, WidgetGallery, ...)
  • Every-day GUI programs and utilities (Spreadsheet with JavaScript, TextEditor, Terminal, PixelPaint, various multimedia viewers and players, Mail, Assistant, Calculator, ...)

... and all of the above are right in this repository, no extra dependencies, built from-scratch by us :^)

Additionally, there are over two hundred ports of popular open-source software, including games, compilers, Unix tools, multimedia apps and more.

How do I read the documentation?

Man pages are available online at man.serenityos.org. These pages are generated from the Markdown source files in Base/usr/share/man and updated automatically.

When running SerenityOS you can use man for the terminal interface, or help for the GUI.

Code-related documentation can be found in the documentation folder.

How do I build and run this?

See the SerenityOS build instructions. Serenity runs on Linux, macOS (aarch64 might be a challenge), Windows (with WSL2) and many other *Nixes with hardware or software virtualization.

Get in touch and participate!

Join our Discord server: SerenityOS Discord

Before opening an issue, please see the issue policy.

A general guide for contributing can be found in CONTRIBUTING.md.

Authors

And many more! See here for a full contributor list. The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.