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Sergey Bugaev 373d135e74 LookupServer: Implement a DNS server :^)
LookupServer can now itself server as a DNS server! To service DNS clients, it
uses the exact same lookup logic as it does for LibIPC clients. Namely, it will
synthesize records for data from /etc/hosts on its own (you can use this to
configure host names for your domain!), and forward other questions to
configured upstream DNS servers. On top of that, it implements its own caching,
so once a DNS resource record has been obtained from an upstream server,
LookupServer will cache it locally for faster future lookups.

The DNS server part of LookupServer is disabled by default, because it requires
you to run it as root (for it to bind to the port 53) and on boot, and we don't
want either by default. If you want to try it, modify SystemServer.ini like so:

[LookupServer]
Socket=/tmp/portal/lookup
SocketPermissions=666
Priority=low
KeepAlive=1
User=root
BootModes=text,graphical

and enable server mode in LookupServer.ini like so:

[DNS]
Nameservers=...
EnableServer=1

If in the future we implement socket takeover for IP sockets, these limitations
may be lifted.
2021-02-15 09:14:42 +01:00
.github Revert "Meta: Enable CodeQL static analysis for Serenity" 2021-02-03 18:42:02 +01:00
AK LibCrypto: Make a better ASN.1 parser 2021-02-14 13:30:10 +01:00
Base LookupServer: Implement a DNS server :^) 2021-02-15 09:14:42 +01:00
Documentation Documentation: Update build dependencies on OpenBSD 2021-02-14 09:29:22 +01:00
Kernel Kernel: Mark BlockResult as [[nodiscard]] 2021-02-15 08:28:57 +01:00
Meta Meta: Add Ports/build_installed.sh to the lint-ports ignore list 2021-02-15 07:51:40 +01:00
Ports Everywhere: Canonicalize 'ReadMe' capitalization 2021-02-15 07:41:16 +01:00
Toolchain Toolchain: Explicitly enable LTO, fix build on OpenBSD 2021-02-14 09:29:22 +01:00
Userland LookupServer: Implement a DNS server :^) 2021-02-15 09:14:42 +01:00
.clang-format Meta: Update .clang-format to not indent nested namespaces 2020-03-14 10:10:21 +01:00
.gitattributes Meta: Add .gitattributes file 2020-07-30 17:07:40 +02:00
.gitignore Ports: Move packages.db from Ports/ to Build/ 2021-02-01 19:40:34 +01:00
.pre-commit-config.yaml Meta: Update lint-{clang-format,shell-scripts}.sh to take a list of files 2020-12-27 21:25:27 +01:00
.prettierignore Meta: Add lint-prettier.sh 2020-12-27 21:25:27 +01:00
.prettierrc Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
CMakeLists.txt Build: Allow setting DBGLN_NO_COMPILETIME_FORMAT_CHECK via CMake flag 2021-02-08 18:27:28 +01:00
CODE_OF_CONDUCT.md Meta: Move code of conduct (lol) to a separate file 2019-10-23 10:05:06 +02:00
CONTRIBUTING.md Meta+Docs+CI: Require clang-format >= 11 2020-12-31 21:51:00 +01:00
LICENSE Meta: Update project copyright dates (2018-2021) :^) 2021-01-01 01:14:16 +01:00
ReadMe.md Meta: Add Andrew Kaster to the contributors list :^) 2021-01-13 11:26:16 +01:00

SerenityOS

Graphical Unix-like operating system for x86 computers.

Build status Fuzzing Status

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.

I (Andreas) regularly post raw hacking sessions and demos on my YouTube channel.

Sometimes I write about the system on my github.io blog.

I'm also on Patreon and GitHub Sponsors if you would like to show some support that way.

Screenshot

Screenshot as of 8ea4375

Kernel features

  • x86 (32-bit) kernel with pre-emptive multi-threading
  • Hardware protections (SMEP, SMAP, UMIP, NX, WP, TSD, ...)
  • IPv4 stack with ARP, TCP, UDP and ICMP protocols
  • ext2 filesystem
  • POSIX signals
  • Purgeable memory
  • /proc filesystem
  • Pseudoterminals (with /dev/pts filesystem)
  • Filesystem notifications
  • CPU and memory profiling
  • SoundBlaster 16 driver
  • VMWare/QEMU mouse integration

System services

  • Launch/session daemon (SystemServer)
  • Compositing window server (WindowServer)
  • Text console manager (TTYServer)
  • DNS client (LookupServer)
  • Network protocols server (ProtocolServer)
  • Software-mixing sound daemon (AudioServer)
  • Desktop notifications (NotificationServer)
  • HTTP server (WebServer)
  • Telnet server (TelnetServer)
  • DHCP client (DHCPClient)

Libraries

  • C++ templates and containers (AK)
  • Event loop and utilities (LibCore)
  • 2D graphics library (LibGfx)
  • GUI toolkit (LibGUI)
  • Cross-process communication library (LibIPC)
  • HTML/CSS engine (LibWeb)
  • JavaScript engine (LibJS)
  • Markdown (LibMarkdown)
  • Audio (LibAudio)
  • PCI database (LibPCIDB)
  • Terminal emulation (LibVT)
  • Out-of-process network protocol I/O (LibProtocol)
  • Mathematical functions (LibM)
  • ELF file handling (LibELF)
  • POSIX threading (LibPthread)
  • Higher-level threading (LibThread)
  • Transport Layer Security (LibTLS)
  • HTTP and HTTPS (LibHTTP)

Userland features

  • Unix-like libc and userland
  • Shell with pipes and I/O redirection
  • On-line help system (both terminal and GUI variants)
  • Web browser (Browser)
  • C++ IDE (HackStudio)
  • IRC client
  • Desktop synthesizer (Piano)
  • Various desktop apps & games
  • Color themes

How do I read the documentation?

Man pages are browsable outside of SerenityOS under Base/usr/share/man.

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

How do I build and run this?

See the SerenityOS build instructions

Before opening an issue

Please see the issue policy.

Communication hubs

The main hub is #serenityos on the Freenode IRC network.

We also have a project mailing list: serenityos-dev.

Author

Contributors

(And many more!) The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.