This version leverages a flexible, cleaner key-value strategy
reducing the need to design entire new headers for every feature
addition, change, etc.
* A friendly declaration for the module authors, with minimal
requirements to fill in, and explicit labels of what the fields are.
* Repetition of keys, removing references to (and the requirement to
build) a clist, hlist and hfnlist and caplist and whatever the future
holds.
* Safe deterministic loading and unloading. Keys are evaluated in
order, errors can be recognized, and unloading occurs in reverse
order.
ircd: Refactor internal half of modules.c, with some V3 additions.
Provides better delegation for versions, a cleaner stack with better
error handling, and some functionality deduping. V1 and V2 handlers
are still somewhat unaltered, just factored in.
channel mode classification which is required by RPL_MYINFO indicating arity,
and RPL_ISUPPORT indicating an enumerated class. The content of these replies
had previously been generated by hardcoded strings of some letters.
Channel modes require classification which corresponds to the
CHANMODES= data in RPL_ISUPPORT. Classes A,B,C can then be
listed in the unary column of RPL_MYINFO. cflag_add() is updated
for this. Additional cleanup of chmode.h and channel.h
circularity is also proffered within.
Submitted-by: Jason Volk <jason@zemos.net>
This will allow service process monitoring to recognise the difference
between a shutdown and an error of a -foreground ircd, because only
/DIE (or SIGINT) will exit with return code 0.
It's useful to allow authd to run in parallel with ssl negotiation,
but if the ssld connection has plaintext data ready for reading
there's a race condition between authd calling read_packet() and
ssl_process_certfp() storing the certificate fingerprint. This
scenario would be bad for a server connecting because fingerprint
verification will fail.
Allow either operation to complete first, but wait until
ssl_process_open_fd() calls the ssl open callback before calling
read_packet().
Don't use the librb callback type as we're always passing client_p.
Provide a return value so that the connect handler can exit_client()
and the accept handler can opt to use the default dead handler.
