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Commit Graph

639 Commits

Author SHA1 Message Date
Bram Matthys b8837844fb Newlog: new config plan, ditch set::logging and use log blocks soon.
In this commit it is still called logx { }. Will merge them soon
into one log { } block.
2021-08-07 10:39:54 +02:00
Bram Matthys c22207c4ca Drop cf_ prefix from ConfigFile and ce_ prefix from ConfigEntry structs.
Also rename them to describe better what they do.

ConfigFile:
cf_filename -> filename
cf_next -> next
cf_entries -> items

ConfigEntry:
ce_fileptr -> file
ce_varlinenum -> line_number
ce_fileposstart -> file_position_start
ce_fileposend -> file_position_end
ce_sectlinenum -> section_linenumber
ce_varname -> name
ce_vardata -> value
ce_cond -> conditional_config
ce_entries -> items
ce_next -> next
ce_prevlevel -> parent

Also add doxygen docs for both structs.
2021-08-06 17:50:45 +02:00
k4be 50eaee19a7 Merge branch 'unreal60_dev' into unreal60_dev+watch 2021-08-06 15:25:13 +02:00
k4be 55a5574a4b Merge branch 'unreal60_dev' into unreal60_dev+watch 2021-08-06 15:23:37 +02:00
Bram Matthys f34d3bd861 Add set::logging block and the logging to snomask mapping.
Note that without such a block nothing will be sent to ircops at all
(anything that comes from unreal_log anyway).
In a later commit either a snomasks.default.conf will be added and/or
an internal default mapping.

This also moves the recursion trap to earlier in the logging code,
which has the side effect that debug traffic regarding snomasks is
no longer logged.
2021-08-06 15:19:36 +02:00
Bram Matthys 4115eaf483 Use memory pool for channels 2021-08-05 17:20:24 +02:00
Bram Matthys 3c7112469b Drop 2nd argument to find_channel which was always NULL everywhere anyway. 2021-08-05 17:02:39 +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 f5852ce534 Newlog: add log_data_timestamp() and use ISO8601 timestamps in JSON
logging. We already did so for the "timestamp" of the log message,
but now also do it in other log messages that have a timestamp,
such as "set_at" and "expire_at" in TKL entries.
2021-08-05 11:11:21 +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
Bram Matthys b23f7e77c7 Add unreal_log_raw() if you want to log a buffer directly without expanding
the $stuff in it. This is unusual, but possible in some cases.
Generally people should use unreal_log(), though.
2021-08-05 07:54:22 +02:00
k4be 4ec455bf06 Add selective watch removal.
Clean up linked list item deleting.
2021-07-21 18:04:01 +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 3a9e4f98ac Add option for notifying chanops about invitations by normal users.
Normally, channel operators are only notified when another chanop
invites someone to their channel - as this would allow the user to
join the channel later if it becomes invite-only. This is still
the default behaviour. But now, it can be configured to notify
operators about any invitation done to their channel, eitner by
another op or by normal user. This will allow them to see whether
someone floods others with invitations to their channels.
Enable the option with set::normal-user-invite-notification yes;
2021-07-17 18:07:02 +02:00
k4be c97b9bb494 Move invites from core to module 2021-07-14 20:20:56 +02:00
Bram Matthys d7fcc90014 Change lost_server_link() prototype and log errors properly for both TLS and non-TLS.
Not really satisfied with the way the TLS socket error is logged yet, but ok..
2021-07-14 14:13:02 +02:00
Bram Matthys 49fe200243 unreal_log(), connect_server and report_error() / report_baderror():
* Converted 90% of the socket and linking errors to use unreal_log()
* Add log_data_socket_error(fd) and $socket_error
* This also makes connect_server() 'void' and removes all of the error
  reporting from the callers (there was 3x code duplication due to that)
* Don't use report_error and report_baderror anymore in socket.c
* More to follow...
2021-07-14 13:33:18 +02:00
Bram Matthys 1068960b9a We now compile with -Wformat-nonliteral by default.
This adds __attribute__((format(printf,X,Y))) to several functions.
It also adds checking only for the non-literal case to some functions
such as unreal_log/unreal_do_log.

This so we can more easily detect format string issues. Especially now with
the recoding of the logger and with possible future mistakes in this area
in UnrealIRCd 6 itself or in third party modules.

The check is currently disabled in these files, which are TODO items:
* src/send.c: still much work to do
* src/socket.c: due to report_error and report_baderror().
  I want to get rid of these functions and integrate them
  in the new logger anyway.
* src/serv.c: only disable for hunt_server()
2021-07-14 11:15:49 +02:00
Bram Matthys a57bdba220 Move CONFIG_TEST/CONFIG_RUN stuff for logging from conf.c to log.c
Still some other stuff to move too eg rehash/freeing stuff etc.
2021-07-12 18:00:41 +02:00
Bram Matthys b871d2a177 Add log::type for 'json' (work in progress) 2021-07-12 17:24:16 +02:00
Bram Matthys f89348d26c Add JSON logger - initial work 2021-07-12 14:37:25 +02:00
Bram Matthys 79740c4a38 Make "REHASH" and ./unrealircd rehash also run the same code as "REHASH -tls",
if on OpenSSL 1.1.1 or later.

We trust OpenSSL 1.1.1 and later to be good enough to handle all
the reference counting and freeing nowadays, which is something that
was not done correctly in (much) older OpenSSL versions, leading
to crashes on one hand and on memory leaks on the other hand.

In OpenSSL 1.1.0 and earlier we do not rehash tls on simple "REHASH",
since that code has not been vetted. However, nobody should be
running those old OpenSSL versions anyway, since they are out of
official OpenSSL support.
2021-06-27 15:38:40 +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 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
Ramiro Bou 5d6738b3e8 Allowing multiple masks in "deny link" blocks. (#140) 2021-06-18 15:13:50 +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 20c20b3053 Try to explain to people that symmetric encryption works with keys (:D) 2021-06-05 19:20:11 +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 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 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 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 ff84f17f72 Move strtolower_safe() from antirandom to support.c 2021-05-15 15:38:57 +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 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 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 2765eaac26 Add find_nvplist() 2021-03-10 17:24:38 +01:00
Bram Matthys 1f47cc7824 Support for dated log files such as log "ircd.%Y-%m-%d.log" { }
Suggested by Amiga600 in https://bugs.unrealircd.org/view.php?id=5784

This also fixes a bug with log::maxsize on Windows (cannot overwrite
existing file with .old).

It simplifies the logging code a little and makes it a tad more readable.

And it adds an unreal_strftime() function to make things easy.
2021-03-08 10:37:28 +01:00
Bram Matthys dc40d27cd8 Move set::anti-flood::unknown-flood-* to set::anti-flood::handshake-data-flood
which is a new block, documented at:
https://www.unrealircd.org/docs/Set_block#set::anti-flood::handshake-data-flood
The reason for this is better naming and allowing to tweak ban-action.
2021-02-28 07:52:33 +01:00
Bram Matthys c71214cefe Rename nvplist functions to match the rest, fix resource leak,
and move the functions to list.c where they belong.
nvplist_add()		-> add_nvplist()
nvplist_add_fmt()	-> add_fmt_nvplist()
(new)			-> free_nvplist
2021-02-02 18:39:17 +01:00
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 9204939a7f Windows: improve logging on-boot, especially when running as a service.
When booting no log files are open yet as we have not parsed any log { }
entries yet. On *NIX we log to stderr during that stage.
On Windows it varies: when running in GUI mode we save the log to a
buffer and display it after booting in a dialog.
When running as a service on Windows we previously wrote SOME entries
to service.log, but other entries were not logged or shown anywhere.

This makes both GUI and Service-mode on windows log all ircd_log()
calls with LOG_ERROR, instead of only config_status(), config_warn()
and config_error() messages.

This also removes config_progress() which isn't used by anything.

Oh, and it also fixes a memory leak in the Windows boot code, a leak
that nobody would have noticed anyway, but still.
2021-01-23 12:22:48 +01:00