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Commit Graph

322 Commits

Author SHA1 Message Date
Bram Matthys 5154038d59 Code cleanup: replace "if(" with "if (" 2021-08-18 09:54:43 +02:00
Bram Matthys 58abc0da5b Add moddata_client_get_raw() to get the ModData *.
This probably should not be used much as normally you
should not rely on structures created by modules in
other modules / other code.
2021-08-17 17:03:00 +02:00
Bram Matthys 796cac7a63 geoip: migrate from simple string to returning a GeoIPResult struct.
(work in progress, 1/2)

This also add supports for callbacks which return pointers (pvoidfunc),
we already had that for efuncs but not in callbacks.
2021-08-17 16:39:39 +02:00
Bram Matthys 2ea75dfbdb Add geoip_base module, which sets "geo_country" if a geo provider
module is able to lookup the IP and return a country.

Also consistently use geoip_ and GEOIP_ prefixes.
2021-08-17 15:26:29 +02:00
Bram Matthys 0bbad85f84 Add geo_lookup() function. Make geoip_classic do something useful.
NOTE: everything hardcoded atm, just temporarily.
Add CALLBACKTYPE_GEO_LOOKUP which is called from geo_lookup().
2021-08-17 15:11:40 +02:00
Bram Matthys f75a9c8544 Sync ModData in UID command if mdata.sync = MODDATA_SYNC_EARLY.
This way we should be able to show certfp and webirc status
in far connect notices, and later various other details too.
2021-08-16 14:01:45 +02:00
Bram Matthys a43637d55d Add extban->is_banned_events which you need to set to indicate to
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.
2021-08-14 18:25:36 +02:00
Bram Matthys 0acc9eef49 Add parameter to clean_ban_mask() that will be put in b->conv_options.
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.
2021-08-14 17:36:49 +02:00
Bram Matthys 5f31f7a5cc Add unreal_server_compat module which rewrites named extbans in
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.
2021-08-14 16:45:18 +02:00
Bram Matthys 34b034ab36 Add named extban support. This only deals with the incoming parsing,
it is not visible outgoing yet. So: ~account:name becomes ~a:name.
2021-08-14 09:27:39 +02:00
Bram Matthys 5a387f9c0b Rename extban.flag to extban.letter.
TODO: Should probably do this for umode/cmode as well ;)
2021-08-14 09:07:22 +02:00
Bram Matthys f23546b27c More conv_param() changes, the +3 rule changed, and matches the rest.
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;
2021-08-14 08:57:33 +02:00
Bram Matthys 5269b647d5 Round three of extban API overhaul, this changes extban->conv_param().
More changes will follow related to that...
2021-08-13 17:59:45 +02:00
Bram Matthys b5d948c09c Round two of extban API overhaul, this changes extban->is_ok()
Also cleanup big blob op duplicate code in +beI handling in MODE.
2021-08-13 16:03:15 +02:00
Bram Matthys bff6fdde6f Start of extban API recode. I created the current API in 2003 and..
well.. let's hope I have gained some good insights since then.. :D
2021-08-13 14:17:07 +02:00
Bram Matthys a0a95f6cee Get rid of unnecessary check_init() stuff (and the hook) 2021-08-13 13:06:35 +02:00
Bram Matthys 609a6600aa Remove ircd_log(), use unreal_log() instead! 2021-08-11 18:01:00 +02:00
Bram Matthys 8cd3647ae0 Rename mtag.can_send() to mtag.should_send_to_client().
This because "can send" is ambigious and could be interpreted to
mean that the client may send this mtag to us, while in fact this
function decided whether to send TO the client.
2021-08-10 18:57:47 +02:00
Bram Matthys 3832081eed Rename client->user->svid to client->user->account.
Just as a reminder: don't blindly assume that if anything is set here
that the user is logged in, there is IsLoggedIn(client) for that.
Reason: if the account name starts with a digit or is "*" then the
user isn't actually logged in ;)
2021-08-10 08:14:35 +02:00
Bram Matthys 3a9975713a Move connect_server() from src/socket.c to src/modules/server.c (efunc) 2021-08-09 12:10:24 +02:00
Bram Matthys 0739af0812 Add initial remote logging support via SLOG (S2S cmd).
Also call the log::destination "remote" instead of "global".
2021-08-07 14:38:06 +02:00
k4be 55a5574a4b Merge branch 'unreal60_dev' into unreal60_dev+watch 2021-08-06 15:23:37 +02:00
Bram Matthys 8dd6640bf5 Rename get_channel() to make_channel() to match make_user() and
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.
2021-08-05 16:55:28 +02:00
Bram Matthys dbdfb7c656 Update TKL code to use new logging system. Make the TKL add/del/expiry
messages more consistent at the same time.
2021-08-05 10:19:05 +02:00
k4be 7fab97d364 Add watch notification hook.
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).
2021-07-20 20:59:36 +02:00
k4be 6ec6c37839 Add watch calls to efunctions.
(Doing nothing useful at this point.)
Also bump MAXEFUNCTIONS.
2021-07-19 21:28:29 +02:00
k4be bcbcc10b9d Move watch code from core to module 2021-07-19 18:16:28 +02:00
k4be 3ede47c7fa Remove invite moddata access from core (without breaking the api) 2021-07-15 16:13:02 +02:00
Bram Matthys d3c98c73c2 Fix issue where saslmechlist could not be set by services server.
This broke SASL services autodetection and also sasl=x,y,z in CAP.
Reported by Valware in https://bugs.unrealircd.org/view.php?id=5960

Of course the easiest solution would be just to set .remote_write=1
for this, which is what I've just done for the 5.2.1.1 release.
But there seems to be a pattern here. When a server wants to write
its own object (irc1.example.net writing to the MD object of
irc1.example.net) we have the problem that that object is both
"our client" and from the other server POV it is "themselves".
On one hand you may want to allow that (eg for 'saslmechlist'), on
the other hand a server writing its own 'certfp' sounds like a bad
idea in principle.
So we now add a new option for the 'self' case and make some MD
objects use it. In fact, in the core we now have zero MD objects
using remote_write. We keep the option available though, for example
for k4be's geoip modules and possibly future features.

Module API change:
* .self_write added which allows a server to write to its own object
  (irc1.example.net writing to the MD object of irc1.example.net)
* .remote_write still exists too if you want to allow remote servers
  to write to your own objects
* Note that in all cases, servers can always write to their own
  (child) client objects.

Changes:
* The link-security MD changed from .remote_write=1 to .self_write=1
* The salmechslist MD now has .self_write=1, this fixes the actual bug
2021-07-10 09:14:18 +02:00
Bram Matthys e9e2504bf4 Don't allow remote servers to write to our MD client objects by default.
Modules can still opt-in via mreq.remote_write=1 to allow it for
certain moddata.
For example, k4be may want to do this for his geoip-base module which
allows a single server to set moddata "geoip" for all connecting clients,
including remote clients.
If you are a moddata provider then you can enable it like this:
 ModDataInfo mreq;
 [..]
 #if UNREAL_VERSION_TIME >= 202125
 mreq.remote_write = 1;
 #endif
 [..]

See discussion on https://github.com/unrealircd/unrealircd/pull/142
2021-06-25 11:28:32 +02:00
Bram Matthys 3188b7be2d Small code cleanup for two efuncs, so the names match. 2021-06-06 08:33:20 +02:00
Bram Matthys a85a38e69d Add the ability to SPAMFILTER message-tags.
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.
2021-05-25 20:31:10 +02:00
Bram Matthys 3ad6878865 Set new maximums for channel mode +H. If the channel is +r then the maximum
is now 5000 lines / 31 days. For unregistered it is 200 lines / 31 days.
Previous setting was 200 lines / 7 days for both.

Admins can tweak these settings, see:
https://www.unrealircd.org/docs/Set_block#set::history

More code to deal with corner issues will follow later.

UnrealIRCd module coders [!]:
This also changes the channel mode API conv_param. You can use
the UNREAL_VERSION_TIME >= 202120 condition to detect this.
Eg:
 #if UNREAL_VERSION_TIME < 202120
 int my_conv_param(char *para, Client *client);
 #else
 int my_conv_param(char *para, Client *client, Channel *channel);
 #endif
2021-05-22 18:15:26 +02:00
Bram Matthys cda145b62a Add initial version of CHATHISTORY command
from https://ircv3.net/specs/extensions/chathistory

Current status of the module in UnrealIRCd:
* A significant part of this is done and working
* Currently in modules.optional.conf to get test exposure,
  not yet loaded by default.
* CHATHISTORY subcommands implemented: BEFORE, AFTER, LATEST, AROUND
* It does not implement the subcommand "BETWEEN" yet
* It does not announce or recognize the (draft) CAP's yet
* It does not announce the ISUPPORT token CHATHISTORY=xx yet
* Testcases need to be written to validate everything
* There will be bugs, now, and also while implementing the rest
  in the days to come.
2021-05-19 16:19:41 +02:00
Bram Matthys c79cc6f430 Add ModuleSetOptions(modinfo->handle, MOD_OPT_UNLOAD_PRIORITY, priority);
so modules can indicate if they wish to be unloaded before or after others.
This is used by the channel and history modules so they can save their
databases before the chanmodes modules are unloaded.

Also, made ModuleSetOptions() a void function. I don't think anyone
used the returned value and it now no longer is strictly bitmask add/del
so returning an unsigned int would be a tad confusing.
2021-05-17 11:43:46 +02:00
Bram Matthys 73ae7ccbef Mod API: Add CONFIG_SET_HISTORY_CHANNEL so chanmodes/history
can delegate configuration to history_backend_mem.
2021-05-15 15:41:02 +02:00
Bram Matthys d6b0981433 Module coders: Update HOOKTYPE_LOCAL_NICKCHANGE and HOOKTYPE_REMOTE_NICKCHANGE.
I forgot to include message tags earlier, so this is a breaking change:
-int hooktype_local_nickchange(Client *client, char *newnick);
-int hooktype_remote_nickchange(Client *client, char *newnick);
+int hooktype_local_nickchange(Client *client, MessageTag *mtags, char *newnick);
+int hooktype_remote_nickchange(Client *client, MessageTag *mtags, char *newnick);

Be sure to update your hooks!
You can use something like: #if UNREAL_VERSION_TIME>=202115
2021-04-17 10:38:25 +02:00
Bram Matthys e596b730af Move channel history sending from one layer to the other.
This so for example history_backend_mem() does not do any sending.
Less efficient but needed for later when things get more complex.
2021-04-07 09:42:18 +02:00
Bram Matthys 1baf5f9f7d Show reputation score and some other info in "Client connecting"
notices to IRCOps and in ircd.log.
See the release notes for more details.

Module coders:
You can use HOOKTYPE_CONNECT_EXTINFO to add your own additional
information as well. See get_connect_extinfo() for inspiration.
Use nvplist_add() or nvplist_add_fmt() to easily add your info
to the list.

Module coders II:
Small note: this moves the sending of the far connect notice
to /under/ HOOKTYPE_REMOTE_CONNECT instead of /above/.
2021-01-31 18:30:49 +01:00
Bram Matthys bde91bcc5c Finish Hook API doxygen docs, ~100% done now. 2020-11-22 12:26:30 +01:00
Bram Matthys fcb1767500 Update module API doxygen docs: the hook docs are now 80% done. 2020-11-21 19:08:17 +01:00
Bram Matthys 8372224c01 Add vertical spacing to function prototypes
[skip ci]
2020-11-21 18:10:29 +01:00
Bram Matthys 8720c846a1 And some more hook documentation... 2020-11-08 18:48:11 +01:00
Bram Matthys 8f7e40a6dc Compile fix for gcc with previous commits. 2020-11-08 16:42:39 +01:00
Bram Matthys c369551721 Commit first 40% of Hook API Documentation in doxygen.
The remaining 60% consists of placeholders at the moment.

Note: if you are running git then don't try to live-reload these
changes, ircd must restart.
2020-11-08 16:16:59 +01:00
Bram Matthys 3701ce9a43 Document existing extended ban options. 2020-09-26 12:49:44 +02:00
Bram Matthys 7a4832d337 Fix missing ERROR when using a @label, reported by k4be.
This had to do with the queued packet (in the labeled-response module)
not being sent because the client was freed before the
post packet hook was called.
2020-05-11 19:18:41 +02:00
Bram Matthys 4832559642 LoadPersistentLong() called the wrong function, always raising a warning/error. 2020-05-09 11:51:59 +02:00
Bram Matthys 57f524cbed Support for +draft/typing
This is the work from May 3rd.. need to commit it so i can merge the
flood protection that is related to this...
The final implementation will still need tweaking before pushed.
[skip ci]
2020-05-05 20:16:56 +02:00
Bram Matthys 9887ef6955 Fix possible crash when unloading a module with moddata.
This only happens in some circumstances.

From now on EventDel() will simply mark the event as deleted.
The actual freeing is started in DoEvents() after the event loop.
This makes it safe to use EventDel() everywhere.

The previous attempt to fix that issue was
d29a55a8db but it introduced a
new crash issue for a slightly different case, as mentioned in
https://bugs.unrealircd.org/view.php?id=5553
2020-04-12 16:52:43 +02:00