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Commit Graph

73 Commits

Author SHA1 Message Date
Bram Matthys 2c8ef11004 Newlog: finished server.c conversion, yay. 2021-08-08 19:34:46 +02:00
Bram Matthys 65e97e4140 Fix crash in set::server-linking::autoconnect-strategy sequential-fallback
when a remote server links to another server.
2021-08-08 15:57:33 +02:00
Bram Matthys 2eb1f97d25 Newlog: server.c: Use SERVER_LINKED_REMOTE for remote links as
they use a slightly different format and you may want to exclude
these from certain logging. Also mention the correct uplink there.
2021-08-08 11:18:51 +02:00
Bram Matthys bac8b297c7 Newlog: more server.c conversions (all local server connect rejects done) 2021-08-08 11:02:44 +02:00
Bram Matthys 12adca5817 Set client->name early to provided servername and drop the servername
argument from verify_link() since now you can just use client->name.

Also more newlog for server.c (more to follow)
2021-08-08 10:15:59 +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
Bram Matthys 088996b16e Make ulining an UnrealIRCd server a fatal link error instead of a warning.
https://www.unrealircd.org/docs/FAQ#bad-ulines
2021-08-06 09:39:09 +02:00
Bram Matthys ddf639836b Cleanup server.c: make server_sync() function only do the syncing and
move the parts that deal with adding lists, tagging as uline etc back
to the caller, that is.. cmd_server().
2021-08-06 09:36:38 +02:00
Bram Matthys 4de2fa648f Some more server_sync cleanups 2021-08-06 09:32:59 +02:00
Bram Matthys 64f62adb1b Code cleanup in server_sync(): cptr -> client 2021-08-06 09:29:29 +02:00
Bram Matthys cb14b987b6 Newlog: server.c 2021-08-06 09:26:33 +02:00
Bram Matthys 6bad375ad7 Rename channel->chname to channel->name. 2021-08-05 16:34:45 +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 05aeba9ba9 Get rid of Debug(()) function calls. I never use it anyway. 2021-07-12 18:54:38 +02:00
Ramiro Bou 0985728662 Adding sequential-fallback autoconnect strategy (#151)
After successful server connection it will restart from the beginning of the link blocks again.
2021-07-11 09:24:14 +02:00
Bram Matthys 9fde768201 New block set::server-linking and change autoconnect strategy to 'sequential'
* New block [set::server-linking](https://www.unrealircd.org/docs/Set_block#set::server-linking)
  * For link blocks with autoconnect we now default to the strategy
    'sequential', meaning we will try the 1st link block first,
    then the 2nd, then the 3rd, then the 1st again, etc.
  * We now have different and lower timeouts for the connect and
    the handshake. So we give up a bit more early on servers that
    are currently down or extremely lagged.
2021-06-21 14:53:35 +02:00
Bram Matthys 883a1e02ad Initial work on new set::server-linking block:
set {
        server-linking {
                autoconnect-strategy parallel;
                connect-timeout 10s;
                handshake-timeout 20s;
        }
}

Right now the only autoconnect-strategy is 'parallel', which is simply
the existing behavior since 4.x. A future commit will add other
strategies and may or may not change the default as well.

The bit that is working already is that you can now specify different
timeouts for the connect()/TLS_connect() call and for the rest of
the handshake (when the "SERVER" message is seen), this so the connect
timeout can be relatively short.

All this will be documented later in the wiki and release notes.
2021-06-21 13:23:15 +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 360d3f507f Move try_connections() from core to server module 2021-06-18 17:21:08 +02:00
Ramiro Bou 5d6738b3e8 Allowing multiple masks in "deny link" blocks. (#140) 2021-06-18 15:13:50 +02:00
Bram Matthys 389a971f96 Fix rapid autoconnect protection to work with >120 servers (:D) 2021-06-07 17:11:20 +02:00
Bram Matthys cf53797121 Fix crash if an authenticated server advertises a wrong hop count,
eg due to self-written services / toying around.
2020-04-12 15:49:11 +02:00
Bram Matthys 0bbb935a32 Rename CHECKPROTO() to CHECKSERVERPROTO() to avoid mixing up server caps
and client caps in the future.
2019-12-06 08:32:36 +01:00
Bram Matthys 9aff820d1a Find_* -> find_*, eg Find_alias -> find_alias. 2019-10-26 09:57:15 +02:00
Bram Matthys 845f9ca8ed Uniform spelling: seetle on sync/synced/desync/desynced, rather than
synch/synched/desynch/desynched.
2019-10-25 14:07:58 +02:00
Bram Matthys 09854abade Move the dcc deny stuff into the dccdeny module, that is:
functions from extra.c, entire undccdeny and svsfline,
large functions that were in message.c and conf.c
2019-10-25 13:39:24 +02:00
Bram Matthys cb4d2f9cf0 Get rid of set::new-linking-protocol and __PANGPANG__ stuff for
compatibility with old 3.2.x servers.
2019-10-25 10:58:04 +02:00
Bram Matthys 43593d12cb netinfo.c & server.c: use sendto_umode_global() rather than 2 functions. 2019-10-14 12:23:09 +02:00
Bram Matthys cc36b34f93 Remove unnecessary (void) casts everywhere.
Only use (void) for system/library calls that you want to ignore
explicitly, eg (void)close, if the return value is irrelevant.
2019-10-14 08:23:30 +02:00
Bram Matthys c60bd2e441 Try to use more me.id where possible (rather than me.name) 2019-10-14 08:09:57 +02:00
Bram Matthys f40c9f3c88 Change various client->name to client->id in S2S traffic. More to
follow tomorrow, including me.name to me.id changes (though these
are far less important) and send.c + non-sendto_server hunts...
2019-10-13 20:41:13 +02:00
Bram Matthys 44f9423e13 Remove ID() macro as client->id always contains a proper UID now. 2019-10-13 20:11:58 +02:00
Bram Matthys 746ea5b558 Clean up cmd_server / cmd_sid now that 100% of the network is SID. 2019-10-13 16:22:56 +02:00
Bram Matthys a9890448d8 Rip out support for servers lacking SJ3 2019-10-13 09:33:39 +02:00
Bram Matthys 545c2560e6 Rip out support for servers lacking SIDs/UIDs.
More cleanups will follow later for this one.
2019-10-13 09:24:26 +02:00
Bram Matthys 930ede1c86 Rip out support for servers lacking SJOIN/SJOIN2 2019-10-13 09:09:59 +02:00
Bram Matthys 77bee69951 Fix Windows build 2019-10-11 14:46:13 +02:00
Bram Matthys 04334f022e Fixes for Windows build 2019-10-09 18:20:06 +02:00
Bram Matthys 798f502875 Mass change (at least this one could be fully automated): 'chptr' -> 'channel'
to be consistent with the 'sptr' -> 'client' rename earlier.
2019-10-05 08:49:10 +02:00
Bram Matthys c2d7da6e35 Rename channel list to 'channels', for next commit. 2019-10-05 08:47:24 +02:00
Bram Matthys 3a64077f51 Use 'client' everywhere (if there is no confusion) instead of 'sptr' or 'cptr'.
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'.
2019-10-04 15:25:35 +02:00
Bram Matthys 3d5e49e701 Get rid of FLUSH_BUFFER, since we no longer signal things that way.
Merge check_init and AllowClient into one single AllowClient()
and make it use the more logic 1 and 0 return values for allow / deny.
Similarly, use logic 1 / 0 return values for verify_link.

Module coders:
HOOKTYPE_CHECK_INIT and HOOKTYPE_PRE_LOCAL_CONNECT, changed the
return value, you should now use HOOK_*, eg HOOK_DENY to stop
processing (eg client killed).
2019-10-04 12:30:51 +02:00
Bram Matthys 3126a3fae4 BIG changes internally that will break all modules and required many
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.
2019-10-04 10:28:41 +02:00
Bram Matthys ab3feff7c2 exit_client() now takes 3 parameters rather than 5:
** Exit this IRC client, and all the dependents (users, servers) if this is a server.
* @param sptr        The client to exit.
* @param recv_mtags  Message tags to use as a base (if any).
* @param comment     The (s)quit message
* @returns FLUSH_BUFFER is returned if a local client disconnects,
*          otherwise 0 is returned. This so it can be used from
*          command functions like: return exit_client(sptr, ....);
2019-10-02 14:54:09 +02:00
Bram Matthys 4ac8015f84 Remove 'cptr' from all commands, hooks, etc. It only confuses people and
'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....
2019-10-02 14:25:40 +02:00
Bram Matthys 396ae3f218 Module coders: rename M_* to CMD_*, eg M_SERVER -> CMD_SERVER.
Also add more doxygen documentation.
2019-09-30 10:25:26 +02:00
Bram Matthys bea2564e5d IRCStatistics ircstats; -> IRCCounts irccounts; (this is used for LUSERS) 2019-09-15 14:39:51 +02:00
Bram Matthys de87b439b7 Update memory allocation routines. Step 1 of X. 2019-09-14 16:52:53 +02:00
Bram Matthys 3592d8db3a Update name in first few lines of .c files.
Eg: src/modules/m_away.c is src/modules/away.c nowadays.
2019-09-13 15:46:20 +02:00
Bram Matthys baf02e8980 Rename all m_* functions to cmd_* functions. 2019-09-13 15:45:19 +02:00