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Commit Graph

2144 Commits

Author SHA1 Message Date
Bram Matthys 68d172854d Remove IsARegNick() as we already have IsRegNick() 2021-06-26 11:19:47 +02:00
Bram Matthys 06c0a34ab1 Assume all services use account names (SVID), and drop suport for services
that only set +r on people. To my knowledge, practically no services are
out there anymore that do not use proper SVIDs (and that can link with
UnrealIRCd 5).
2021-06-26 11:14:52 +02:00
Bram Matthys 114d54ac61 Allow larger IDLEN for incoming, but keep sending current length.
I would like a bit more room for this in the future,
but until then we will keep sending UIDs of length 9 in
server to server traffic, so no change at all.
2021-06-25 12:17:33 +02:00
Bram Matthys 26a3444f4e Validate the UID in cmd_uid(). Reported by Valware in
https://bugs.unrealircd.org/view.php?id=5925

This does two things in cmd_uid() now:
* It checks if parameter 6 in UID is a valid UID, using valid_uid()
* It checks if the first 3 characters of the UID match the SID
2021-06-25 11:47:23 +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 e80c7b5b65 Add set::anti-flood options lag-penalty and lag-penalty-sec.
This also allows known-users to execute slightly more commands per second.

For people who want their trusted users/bots to allow even more commands
per second (eg 20cmds/sec) we now have a nice FAQ item that uses this:
https://www.unrealircd.org/docs/FAQ#high-command-rate
2021-06-23 16:21:06 +02:00
Bram Matthys 3fabc1ef5f New security-group::include-mask item so you can put clients into
security-groups based on masks too.
2021-06-23 13:22:17 +02:00
Bram Matthys 52297e24b6 Don't send "local" channel modes to remote servers.
They were already ignored in MODE by remote UnrealIRCd servers,
but this makes it so local modes (+Z and +d at the moment)
are not sent across the wire.

This also changes the channel_modes() function to have an additional
'hide_local_modes' argument. Set this to 1 if you are building a
buffer that will be sent to remote servers, otherwise use 0,
which is far more common.

Also, this will skip saving of local channel modes to channeldb
since all of these are temporary, or at the moment anyway.

Thanks to alice for reporting this bug and providing a good test
case to help fix this issue and the previous ones.
2021-06-19 17:25:26 +02:00
Bram Matthys a541b8f4ad Add support for OpenSSL 3.0.0 (based on -beta1)
Now compiles fine without any warnings.

Note that certificate_quality_check() is an outstanding TODO item.
2021-06-19 13:10:52 +02:00
Bram Matthys 905850a825 Bump version to 5.2.1-git and indicate this is bleeding edge 2021-06-19 10:21:46 +02:00
Bram Matthys b72ea1d945 Change allow block to use allow::mask instead of allow::ip / allow::hostname
We use 'mask' everywhere in the config except here, which is annoying
and also inflexible since mask has several nice options, see
https://www.unrealircd.org/docs/Mask_item

Users upgrading will receive a warning, and a reference to
https://www.unrealircd.org/docs/FAQ#allow-mask
but the IRCd will continue to boot (it is not an error).
2021-06-19 10:17:18 +02:00
Ramiro Bou 5d6738b3e8 Allowing multiple masks in "deny link" blocks. (#140) 2021-06-18 15:13:50 +02:00
Bram Matthys 89755ccec6 ** UnrealIRCd 5.2.0.1 **
Note: existing 5.2.0 users on *NIX can upgrade without restart to
have the spamfilter fix by using:
./unrealircd hot-patch wrongspamfilter520
2021-06-16 08:25:07 +02:00
Bram Matthys de4c09eae4 ** UnrealIRCd 5.2.0 ** 2021-06-14 10:14:23 +02:00
Bram Matthys 36097fbdce Fix SQUIT being sent back to where it came from.
Reported by Ariadne Conill in https://bugs.unrealircd.org/view.php?id=5906

This patch applies cleanly against 5.2.0-rc1 and 5.0.9.x.

Needs more testing, though, as fiddling with SQUIT code and the
various directions and far/near server distinctions can be tricky.
2021-06-07 10:22:23 +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 20c20b3053 Try to explain to people that symmetric encryption works with keys (:D) 2021-06-05 19:20:11 +02:00
Bram Matthys 173af8c88c ** UnrealIRCd 5.2.0-rc1 ** 2021-06-04 11:13:02 +02:00
Bram Matthys e126d924a5 Somehow DEBUGMODE was turned on by last commit, now off again by default. 2021-06-02 19:31:05 +02:00
Bram Matthys 40bc3ef8cc Bump version to 5.2.0-git. This is still work in progress.
Note that we are on the 'unreal52' branch now and have left 'unreal50'
2021-06-02 15:27:14 +02:00
Bram Matthys 3eb0bc24ea Add log::flags "flood" to log flood messages 2021-05-30 19:30:36 +02:00
Bram Matthys f8a732747b Get rid of mempool LOG_DBG which is never used 2021-05-30 19:27:35 +02:00
Bram Matthys 5acef88ceb All violatons of target-flood, nick-flood, join-flood, away-flood,
invite-flood, knock-flood, max-concurrent-conversations are now
reported to opers with the snomask 'f' (flood).
2021-05-30 19:10:18 +02:00
Bram Matthys 6f92233919 The set:anti-flood block has been redone so you can have different limits
for "unknown-users" and "known-users".
As a reminder, by default, "known-users" are users who are identified
to services OR are on an IP that has been connected for over 2 hours
in the past X days.
See https://www.unrealircd.org/docs/FAQ#new-anti-flood-block
for more information on the layout of the new block.

NOTE: This actual feature, the relase notes and the documentation
      are all work in progress.
2021-05-30 18:45:27 +02:00
Bram Matthys 36b9faa7cd Code cleanup: move flood control to generic system 2021-05-28 17:59:39 +02:00
Bram Matthys 191990b881 Code cleanup: at some places "ClientUser" was used instead of "User". 2021-05-28 15:26:58 +02:00
Bram Matthys da519ae04a Get rid of duplicate checks for anti-flood.
Sorry this is too much effort and i think admins should be smart
enough to figure this out themselves.
2021-05-28 14:52:09 +02:00
Bram Matthys 845a582d76 Add support for +draft/reply and load the module by default.
See https://ircv3.net/specs/client-tags/reply for the draft.

Can be used by clients to indicate to which message they are writing
a reply. This can be especially useful for bots, to indicate that
a response belongs to a user request, eg a !trigger.
2021-05-28 09:14:40 +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 872aa93635 Move some string helpers to src/misc.c
skip_whitespace() and read_until()
2021-05-24 18:32:57 +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 74083d7440 In AddListItemPrio() explicitly set item->priority to prio. 2021-05-17 11:39:45 +02:00
Bram Matthys d7bf35e0d9 Set loop.ircd_terminating when IRCd is terminating (signal 15, /DIE, etc) 2021-05-17 11:08:54 +02:00
Bram Matthys 13f9afeaf4 Add sha256hash() function for convenience. 2021-05-15 20:48:04 +02:00
Bram Matthys 1752afee44 Move running_interactively() from crashreport.c to misc.c 2021-05-15 18:28:21 +02:00
Bram Matthys 95cfafcd51 Include dirent.h by default. 2021-05-15 15:42:34 +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 ff84f17f72 Move strtolower_safe() from antirandom to support.c 2021-05-15 15:38:57 +02:00
Bram Matthys 8783280a68 Make UnrealDB big-endian-proof. Rather rare, but you never know
on what hardware people end up running UnrealIRCd.

Also (unrelated) add a check for >64kb strings in unrealdb_write_str()
and return an API error. That too is unlikely to ever happen, but..
better be correct.
2021-05-05 19:04:11 +02:00
Bram Matthys deffc908e3 Document UnrealDB API and get rid of unrealdb_write_data/unrealdb_read_data.
API users must use specific size/type functions instead, otherwise it is
simply too dangerous / too easy to overlook issues.
2021-05-04 11:03:48 +02:00
Bram Matthys 1606f28555 Add unrealdb_write_char() / unrealdb_read_char() 2021-05-03 17:48:23 +02:00
Bram Matthys eb4d7fb3f0 Set version to 5.0.10-git with disclaimer not to use it yet. 2021-05-03 15:27:30 +02:00
Bram Matthys dde3e0ccb2 Add unrealdb and secrets API. Documentation and more information will
follow in later commits.
2021-05-03 15:07:10 +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 5daf7e7ebe Compile with system libsodium, fallback to shipped version.
This library provides easy to use functions for encryption/decryption
among other things. There is some overlap with things that
OpenSSL also provides but not all.
2021-04-09 13:44:31 +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 e31755bc7c *** UnrealIRCd 5.0.9.1 *** (faster build, lower memory requirements during build)
Note: the only change between 5.0.9 and 5.0.9.1 is:
* Build improvements on *NIX (faster compiling and lower memory requirements)
* Windows version is unchanged and still 5.0.9
2021-03-26 08:30:21 +01:00
Bram Matthys 80fbef8b5c *** UnrealIRCd 5.0.9 *** 2021-03-19 20:08:21 +01:00