HaxIRCd, a public domain multi-protocol IRCd with redundant links

This is a work in progress.

• Git repo: https://git.andrewyu.org/hax/haxircd.git
• IRC channel: #chat on rx
• Documentation: https://man.sr.ht/~runxiyu/haxircd
• Task tracker: https://todo.sr.ht/~runxiyu/haxircd
• Mailing list: https://lists.sr.ht/~runxiyu/haxircd

Goals

• Could link in a network among multiple traditional protocols from different traditional IRCDs.
• Could provide internal services (ChanServ, NickServ, HaxServ) and synchronize the services database, handling collisions gracefully.
• Correct, fast and scalable.
• Modular. More extensive runtime module reloading is planned.
• Replace CoupServ and perhaps PyLink in the distant future.

Some implementation details(-ish)

• dlopen(3) is used to dynamically load HaxIRCd.so; this is for RTLD_GLOBAL, so we can use the contained symbols for the actual loadable modules.
• All strings that we handle (i.e. not required by external libraries) are length-specified, not null-terminated. Null bytes are treated as any other character in networking.
• Configuration is just another source file, config.c. The header file config.h defines the configuration options needed.

Dependencies

• Reasonably modern UNIX-like system with support for POSIX threads. We haven't tested on non-Linux systems yet.
• If you want TLS support, GnuTLS, OpenSSL, or LibreSSL.

Why

• PyLink is used by the rx IRC network, but it's unmaintained and we still want to use something like it.
• CoupServ uses the 1202 (InspIRCd v2) protocol, which is not supported by InspIRCd v4; more generally, we want to make protocols pluggable modules.