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.
* Now ban_check_types (previously checktype):
this is one or more of BANCHK_* OR'd together, eg BANCHK_JOIN, BANCHK_MSG..
* Now ban_type (previously what2):
this is the type of the ban, eg EXBTYPE_BAN, EXBTYPE_EXCEPT, etc.
* Now is_ok_check (previously is_ok_checktype)
this is one of EXBCHK_* for is_ok, eg EXBCHK_PARAM to check parameter.
This also changes the remove_user_from_channel() function to have an
extra parameter to hide it from logs. This is used for KICK (already
logged) and QUIT (which would be stupid to generate 10 part log lines for).
* channel->mode.extmode to channel->mode.mode
* channel->mode.extmodeparams to channel->mode.mode_params
This because all channel modes that are set there are extended channel
modes, only lists are still in core atm and they never get set here.
Eg no longer need to walk through the corechannelmodetable for
single param channel modes...
Also fix sjoin comments about "their" and "our" modes. In the merge
case this was not correct, it was "our old" and "merged modes".
which BANCHK_* events you want to listen, eg BANCHK_JOIN, BANCHK_MSG.
You can use BANCHK_ALL to watch on all events.
Only BANCHK_TKL is not included there and needs an explicit
BANCHK_ALL|BANCHK_TKL.
The caller will now take care of BANCHK_* filtering so we won't
waste any CPU on calling an is_banned() function that isn't
interested at all in the event that we have.
Also, no longer require an extban->is_banned function, since some
extbans don't use it. This too saves useless calls.
Currently only supported option is:
BCTX_CONV_OPTION_WRITE_LETTER_BANS: always write letter bans
This removes the NULL pointer magic that i was not happy about.
server to server traffic to be letter extbans.
Yeah this is a tad ugly, but the alternative was worse, see
header of the file for the full story.
Module is loaded by default (obviously).
Still to do: only do this for non-U6 servers (add some PROTOCTL)
And probably alter clean_ban_mask because I don't like the
magic on NULL client at the moment.
The .conv_param() now receives the ban minus the ~own-extban.
And it should also return the part minus the ~own-extban.
Changes to findmod_by_bantype():
1) Takes a string now, rather than a single char value,
so it is ready for named extbans.
2) Second parameter added so you can easily jump to the remainder.
Eg:
extban = findmod_by_bantype(b->banstr, &nextbanstr);
[..check if extban is non-NULL and then..]
b->banstr = nextbanstr;
change some more calls to make_channel() to use find_channel().
Also make it take 1 argument instead of 3.
Needed to be careful in sjoin code since the previous code set
channel->creationtime to 0 if client was a remote. Now merged
a few if's into one. Should be correct :D.
Bram Matthys