using mixed UnrealIRCd 5 and UnrealIRCd 6 networks.
This is a slightly complex rewrite of make_mode_str() and do_mode(),
as we nog go from single mode lines to potentially multiple mode lines.
In short: whenever we would be near buffer cut-off point (the famous
512 byte limit) then previously we would prevent the mode, though not
succesfully in all cases where a network consists of mixed 5.x and 6.x.
From this point onward we no longer do that. Instead we convert one
MODE command to two MODE lines if that is needed.
The benefit of this is that we no longer prevent it BEFORE processing
the MODE, which is a flawed method and could be wrong (causing desyncs).
And also, we no longer partially ignore MODE lines from clients when
they would cause the limit to be exceeded, as we replace them with
two MODE lines instead.
These are more changes than I wanted at such a late point but.. they seem
to be necessary to prevent U5-U6 compatibility issues.
to expose to which users and in what detail.
The default configuration is as follows:
set {
whois-details {
basic { everyone full; }
modes { everyone none; self full; oper full; }
realhost { everyone none; self full; oper full; }
registered-nick { everyone full; }
channels { everyone limited; self full; oper full; }
server { everyone full; }
away { everyone full; }
oper { everyone limited; self full; oper full; }
secure { everyone limited; self full; oper full; }
bot { everyone full; }
services { everyone full; }
reputation { everyone none; self none; oper full; }
geo { everyone none; self none; oper full; }
certfp { everyone full; }
shunned { everyone none; self none; oper full; }
account { everyone full; }
swhois { everyone full; }
idle { everyone limited; self full; oper full; }
}
}
Oh, yeah, and for "secure" this also adds displaying of the TLS cipher
in /WHOIS for ircops and self by default. For all others it is limited
to just "is using a Secure Connection".
This also removes the newly added set::geoip::whois-for-anyone since
it is now configured via set::whois-details::geo.
Module coders: HOOKTYPE_WHOIS changed and you may no longer send
directly to the client from this hook. Instead, you should use
add to the NameValuePrioList, usually via the functions
add_nvplist_numeric() and add_nvplist_numeric_fmt().
For inspiration see bot_whois in src/modules/usermodes/bot.c
and reputation_whois in src/modules/reputation.c
It's usage would be rare, but this is f.e. used from channeldb.
Other uses may be in some 3rd party module.
Example: set_channel_mode(channel, "+k", "key")
an extra char **errmsg argument. Upon failure (non zero return value)
this should contain a format string to be sent to the client
(with the return value denoting the number of the numeric).
This gets rid of sendnumeric_legacy() in join.c
It means you can no longer modify eg parv[1] in-place with strtoken and such.
The main reason for this is that as a command handler you have no idea
where the arguments may come from. It could be from a do_cmd() with
read-only storage (eg a string literal) and so on.
It started with an experiment of how far I could get and how annoying the
side-effects would be, but they seem to be quite managable, so I'm
committing this stuff.
Hopefully this catches/solves some stupid bugs somewhere :)
The only stuff we still have is if a bounce servermode is detected
(incoming) then we just ignore it.
All this bounce stuff wasn't used much, and didn't even work
(was always sending empty bounce string). It was only complicating
the code everywhere with stupid stuff like:
*x++ = bounce ? '+' : '-';
what = MODE_DEL;
The last 3 were always NULL after the remote/local split from a few commits ago.
And nick and username were useless as well as client->name and
client->user->username were always already set.
Any \n's will be expanded to multiple lines.
* For JSON disk logging there is no change.
* For text disk logging it will show as:
[time] facility subsys.CODE+
[time] facility subsys.CODE+
[time] facility subsys.CODE
So a plus sign is added if another message is to follow.
* For notices to opers/snomasks exactly the same (plus sign if needed).
Untested. More changes to follow eg to notice dropping the json
in the followup msgs.
This also changes the logging format for text disk to match
the output on server notices, we no longer log as:
[TS] facility subsystem event_code: msg....
But as:
[TS] facility subsystem.event_code: msg....
This will likely reduce performance, but this should not matter in modern times.
Also added flags to let modules know which one the entry belongs to, and what
to do with it.
Now modules should be able to add their own WATCH methods (like IRCv3 MONITOR),
or extend functionality to notify about other changes than the default log on,
log off and away statuses (like SETNAMEs).
The new target type is called 'T' and we match against "name=value"
of each message tag (or just "name" if it is without value).
Example: SPAMFILTER ADD -simple T kill 0 this_is_a_test +typing=active
(No this is not a suggestion :D)
This probably won't be used much at all, but it is good to have the
option available in case there is some massive problem,
especially since more message tags may pop up sooner or later.
Caveat: this is actually a bit slow as we may have to check multiple
message tags for a single line.
If there are zero message-tag spamfilters then we will automatically
short-circuit and save all this CPU, which will be the most common case.
to the specified number of lines. This defaults to 1000.
This will prevent IRCOps from being flooded off ("Max SendQ exceeded")
if they list all *LINES and there are thousands.
In the newly introduced error message, after too many matches,
we also kindly point out to use filters like '/STATS gline +m *.nl'
1) HOOKTYPE_CAN_SEND is now called HOOKTYPE_CAN_SEND_TO_CHANNEL
The arguments and return values are unchanged
2) similarly can_send() is now called can_send_to_channel()
3) If you want to block or alter a message you must now
use HOOKTYPE_CAN_SEND_TO_CHANNEL and return HOOK_DENY from
there with an appropriate *errmsg filled (see nocolor and
many other modules for an example)
4) You CANNOT use HOOKTYPE_PRE_USERMSG anymore to block a message.
I actually wanted to rip this hooktype out entirely, but
delayjoin needs it. HOOKTYPE_PRE_USERMSG is only useful for
notification that a message is going to be sent BEFORE it is
actually sent (which is exactly what delayjoin needs, so it
can send a JOIN if the user is currently invisible).
5) This is all to make things more clean:
* HOOKTYPE_PRE_USERMSG is only for delayjoin
* HOOKTYPE_CAN_SEND_TO_CHANNEL is used for exactly what the
name implies. You can also change the message text there,
such as for +G, +S, etc.
This so I - and others - don't constantly have to wonder whether the client
is called sptr, cptr or acptr in a simple routine.
Insane --> 212 files changed, 6814 insertions(+), 6945 deletions(-)
Couldn't just mass-replace of course since there are places where there
are multiple clients involved. So had to check each function.
Also renamed some 'acptr' to 'target' and such.
I will write a page with new style rules later.. but in short if there is
only 1 client involved it will now be called 'client'.
that deal with finding TKL's or spamfilters etc.
More will likely follow, to make things more logical.
Also, run_spamfilter -> match_spamfilter
place_host_ban, can_privmsg, check_dcc, find_tkline_match all impacted.
code changes in UnrealIRCd itself:
1) Clients are no longer freed directly by exit_client. Most fields
are freed, but 'sptr' itself is not, so you can use IsDead() on it.
2) exit_client now returns void rather than int
3) ALL command functions return void rather than int.
Of course this also affects do_cmd, command overrides, etc.
This is a direct consequence of the removal of 'cptr' earlier, as that
was used to signal certain things that are now no longer possible
(and it raises the question if things were always correctly signaled
in the first place, so may fix some bugs).
It also makes the code more resillient against cases where you forgot
to check if the client was freed. Still, you are encouraged to do an
IsDead(sptr) if you are calling functions that may kill clients,
such as command functions or things that may use spamfilter.
More changes will follow, such as the removal of FLUSH_BUFFER.
'sptr' is sufficient and in most cases the only one you should care about.
Should you need it, you can access sptr->direction in cases where you
need the old information (usually only for some sendto_* functions
and some protoctl checks), so 'cptr' was redundant too.
[!] This change likely introduces some bugs. This was many hours of work.
I only cut some corners in 4 functions, which will be fixed at a later
stage..... yes, more major changes to come.
On the plus side, I likely fixed some bugs in the process. Situations
where cptr vs sptr usage was incorrect. Eg using cptr->name (near server)
when sptr->name should be used (the actual source server), etc....
Bram Matthys