Don't wait for the peer to close the connection. This allows us to
forward the ERROR mesage in the network, instead of the very generic
"client closed connection" message.
Explicitely forbid remote servers to modify "x-lines" (G-LINES) when the
"AllowRemoteOper" configuration option isn't set, even when the command
seems to originate from the remote server itself: this prevents GLINE's
to become set during server handshake in this case (what wouldn't be
possible during regular runtime when a remote IRC Op sends the command)
and what can't be undone by IRC Ops later on (because of the missing
"AllowRemoteOper" option) ...
At the moment, ngIRCd fails to build against OpenSSL 1.1 since the
configure check probes for the SSL_library_init symbol which was
removed, but probing for a different function availabe in both versions
solves that problem: SSL_new().
And as SSL_library_init is no longer needed, the patch boils down to
probing SSL_new to assert libssl is available, and disabling the
SSL_library_init invokation from OpenSSL 1.1 on, see also another
application[1] (NSCA-ng) that did pretty much the same.
Patch was compile-tested on both Debian jessie (OpenSSL 1.0.2) and
stretch (OpenSSL 1.1).
[1] <https://www.nsca-ng.org/cgi-bin/repository/nsca-ng/commit/?id=8afc22031ff174f02caad4afc83fa5dff2c29f8a>
(Patch by Christoph, commit message cherry-picked from the email thread
on the mailing list by Alex. Thanks!)
This fixes the following correct -Wmisleading-indentation warning
messages of gcc 6.2:
irc-write.c: In function ‘IRC_SendWallops’:
irc-write.c:521:4: warning: this ‘if’ clause does not guard...
irc-write.c:524:5: note: ...this statement, but the latter is
misleadingly indented as if it is guarded by the ‘if’
irc-write.c:526:4: warning: this ‘if’ clause does not guard... []
irc-write.c:529:5: note: ...this statement, but the latter is
misleadingly indented as if it is guarded by the ‘if’
irc-info.c: In function ‘IRC_STATS’:
irc-info.c:895:3: warning: this ‘else’ clause does not guard...
irc-info.c:897:4: note: ...this statement, but the latter is
misleadingly indented as if it is guarded by the ‘else’
No functional changes, the code has been correct, but the indentation
was wrong ...
This setting allows to run multiple ngIRCd instances with
PAM configurations on each instance.
If one sets it to "ngircd-foo", PAM will use `/etc/pam.d/ngircd-foo`
instead of the default `/etc/pam.d/ngircd`.
Clients can specify multiple targets for the "PRIVMSG", "NOTICE", and
"SQUERY" commands, separated by commas (e. g. "PRIVMSG a,#b,c :text").
Since commit 49ab79d0 ("Limit the number of message targes, and suppress
duplicates"), ngIRCd crashed when the client sent the separator character
only as target(s), e. g. "," or ",,,," etc.!
This patch fixes the bug and adds a test case for this issue.
Thanks to Florian Westphal <fw@strlen.de> for spotting the issue!
This prevents an user from flooding the server using commands like this:
PRIVMSG nick1,nick1,nick1,...
Duplicate targets are suppressed silently (channels and clients).
In addition, the maximum number of targets per PRIVMSG/NOTICE/... command
are limited to MAX_HNDL_TARGETS (25). If there are more, the daemon sends
the new 407 (ERR_TOOMANYTARGETS_MSG) numeric, containing the first target
that hasn't been handled any more.
Closes#187.
Either we use assert() to _guarantee_ a certain condition, or we use
if(...) to test for it. But never both.
So get rid of the assert() in Send_Message_Mask() and handle the case
that the target mask doesn't contain a dot (".") as regular error,
don't require the caller to assure that any more.
This polishes commit 5a312824.
Please note:
The test in Send_Message() is still _required_ to detect whether the
target is a channel (no dot) or a "target mask" (at least one dot)!
Don't crash the daemon when the NJOIN handler can't join the new client
to a channel (when the Channel_Join() function failed) but try to KILL this
client -- which is the only possible reaction besides crashing: otherwise
the network would get out of sync.
The IRC_KillClient() function is documented to handle the case that the
"Client" structure is NULL, so make sure that this actually works and
can't crash the daemon.
Please note:
The current code doesn't make use of this feature, so this fix is
definitely the "right" thing to do but doesn't fix an actual problem.
ngIRCd tested for the wrong prefix of "half ops" when processing NJOIN
commands and therefore never classified a remote user as "half op".
Thanks to wowaname for pointing this out on #ngircd!
Now ngIRCd catches more errors on the server-to-server (S2S) protocol
that could crash the daemon before. This hasn't been a real problem
because the IRC S2S protocol is "trusted" by design, but the behavior
is much better now.
Thanks to wowaname on #ngircd for pointing this out!
At the moment ngircd fails the tests for reproducible builds in Debian
since it uses the __DATE__ and __TIME__ macros for the INFO command.
Instead of patching this out I decided to implement an optional
constant BIRTHTIME that allows you to set a time stamp for the "Birth
Date" information, in seconds since the epoch, like in
export CFLAGS += -DBIRTHTIME=$(shell date +%s --date="2015/08/15 23:42:22")
In the future, Debian will provide a SOURCE_DATE_EPOCH environment
variable, dealing with the situation until then will be my job.
The time format was taken from the NGIRCd_StartStr formatting in
ngircd.c so the "Birth Date" and "On-line since" lines in the INFO
output look similar:
:irc.example.net 371 nick :ngIRCd 22.1-IDENT+IPv6+IRCPLUS+PAM+SSL+SYSLOG+ZLIB-x86_64/pc/linux-gnu
:irc.example.net 371 nick :Birth Date: Tue Aug 25 2015 at 18:11:11 (CEST)
:irc.example.net 371 nick :On-line since Tue Aug 25 2015 at 18:11:33 (CEST)
:irc.example.net 374 nick :End of INFO list
The format of the time stamped is changed, but as far as I can tell, there's no
rule that is violated by that.
Bonus level: Reformat the messages so the time stamps are aligned.
AUTH is a valid nickname so sending notices to it is probably not
a good idea. Use * as the target instead as done with numerics
when the nick is not available.
This mimics the behaviour in Charybdis, IRCD-Hybrid, InspIRCd 2.2,
Plexus 4, etc.
Reconnecting to ngIRCd 22.1 built with OpenSSL with some OpenSSL
clients, including Pidgin and stunnel 5.06, attempts to reuse a session
and fails due to the absence of this line.
The error message in syslog from ngIRCd is:
> SSL protocol error: SSL_accept (error:140D9115:SSL
> routines:SSL_GET_PREV_SESSION:session id context uninitialized)
This patch appears to fix the problem for both Pidgin and stunnel; it
may work for other OpenSSL clients that attempt to re-use sessions.
* <https://github.com/ngircd/ngircd/issues/182>
* <https://developer.pidgin.im/ticket/11568>
* <https://www.openssl.org/docs/ssl/SSL_CTX_set_session_id_context.html>
* LucentW/master:
Fix with oneshot invites
Fixed building issues\
Implement timestamp tracking of invites
Keep track of who placed bans/invites/excepts
IRC operators w/OperCanMode can kick anyone [already cherry-picked]
Closes#203, Closes#205.
For example, Interix is missing this function, which prevented
ngIRCd to build on this platform. When setgroups(3) isn't available,
a warning message is issued when ngIRCd starts up.
lightIRC and other clients expecting RPL_LISTSTART should now behave correctly.
Closes#207.
(cherry picked from commit 0680ce5fd99bc643651d1433bcdaf271aeb73c46)
Up to now, only the the string ("haystack") became lowercased and was
the compared to the pattern ("needle") -- which failed, when the pattern
itself wasn't all lowercase ...
- Update documentation in ngircd.conf(5)
- LIST: Don't hide channels for IRC Ops when "MorePrivacy" is in effect
- WHOIS: Don't hide IP addresses/hostnames when "MorePrivacy" is in effect
Closes#198
Now lists nodes also have the "onlyonce" field, since the valid_until is
used to keep the timestamp of placing. Found no references to onlyonce
or about valid_until being == 1, though, so it might be unused, but
still available for other enhancements.
Implement ERR_USERNOTONSERV(504) numeric and make sure that the
target user is on the same server when inviting other users to
local ("&") channels.
ircd-ratbox uses the ERR_USERNOTONSERV(504) numeric for this, and I
think this is a good idea -- other IRC daemons (like ircu) silently
drop such impossible invites, but thats not a big benefit ...
Idea by Cahata, thanks! Closes#183.
Up to now when receiving a MODE command, ngIRCd only reported the channel
creation time to clients that were members of the channel. This patch
reports the channel creation time to all clients, regardless if they are
joined to that channel or not.
At least ircd-seven behaves like this.
This closes#188. Thanks Cahata!
No other IRC daemon seems to do this (today?), don't remember why
ngIRCd did it in the first place ...
Closes#185.
Reported by Cahata in #ngircd, thanks!
The logic is reversed ...
This bug has been introduced by commit c74115f2, "Simplify mode checking on
channels and users within a channel", ngIRCd releases 21, 21.1, and 22 are
affected :-(
Problem reported by Cahata in #ngircd, Thanks!
Up to now, ban, invite, and G-Line lists have been synced between servers
while linking -- but obviously nobody noticed that except list have been
missing ever since. Until now.
Thanks to "j4jackj", who reported this issue in #ngircd.
David Binderman <dcb314@hotmail.com> reported the following compiler warning,
which is a real bug in ngIRCd, thanks!
conn.c:2077:55: warning: logical not is only applied to the left hand
side of comparison [-Wlogical-not-parentheses]
The "SYSLOG" #define isn't related to "Conf_ScrubCTCP" at all, so
initialize the latter even when "SYSLOG" isn't #define'd.
Pointed out by wowaname on #ngircd, thanks!
There are installations out there that would like to configure more
than 16 links per server, so increase this limit. Best would be to
get rid of MAX_SERVERS altogether and make if fully dynamic, but
start with this quick and dirty hack ...
Different operating systems do behave quite differently when doing DNS
lookups, for example "127.0.0.1" sometimes resolves to "localhost" and
sometimes to "localhost.localdomain" (for example OpenBSD). And other
systems resolve "localhost" to the real host name (for example Cygwin).
So not using DNS at all makes the test site much more portable.
Let IRC_MODE() detect that the "fake" MODE command originated on the local
sever, which enables all modes to be settable using "DefaultUserModes"
that can be set by regular MODE commands, including modes only settable by
IRC Operators.
ngIRCd relaxes its flood protection for users having the user mode "F" set
and allows them to rapidly send data to the daemon. This mode is only
settable by IRC Operators and can cause problems in the network -- so be
careful and only set it on "trusted" clients!
User mode "F" is used by Bahamut for this purpose, for example, see
<http://docs.dal.net/docs/modes.html#4.9>.
ngIRCd uses "command throttling" and "bps throttling" (bytes per second).
The states are detected in different functions, Conn_Handler() and
Read_Request(), but handle the actual "throttling" in a common function:
this enables us to guarantee consistent behavior and to disable throttling
for special connections in only one place, eventually.
Change all #define's to follow the form
#define DEBUG_xxx {0|1}
to disable (0, default) or enable (1) additional debug messages.
And somewhat enhance some DEBUG_BUFFER messages.
This partially reverts commit b130b35f4, "Update #include's: remove
unused and add missing ones", but fixes the following compiler and
analyzer warnings of Apple Xcode 5:
"Semantic issue: No previous prototype for function 'yyy'"
The "deheader" tool (<http://www.catb.org/~esr/deheader/>) has been
used to find unused #include directives as well as missing ones.
Tested on:
- A/UX 3.1.1
- ArchLinux (2014-03-17)
- Debian GNU/Hurd
- Debian GNU/Linux 6.0.9
- Debian GNU/Linux 7.4
- Fedora 20
- FreeBSD 9.2
- OpenBSD 4.8
- OpenBSD 5.1
- OS X 10.9
- Solaris 11
Fix the following two errors emitted by the Apple K&R C compiler
on Apple A/UX:
"./class.c", line 47: no automatic aggregate initialization
"./class.c", line 47: illegal lhs of assignment operator
"./conf.c", line 1052: syntax error
Tested on A/UX 3.1.1.
The cloaked IRC mask of a user is his visible mask, so the daemon has
to use it for generating the "one time" entries for the invite list of
the given channel.
Without this patch, ngIRCd records the real IRC mask which will never
match while the target client is "+x", and even worse, will disclose
the real mask on "MODE #channel +I" commands :-/
Bug reported by Cahata on #ngircd, thanks!
This fixes commit 2e168c78 ("Return ISUPPORT(005) numerics on
'VERSION'") and make sure, that the 005 numerics are correctly
routed back to the sender.
Don't support "range marching" in our pattern matching code using
the "[...]" syntax, because [ and ] are valid characters in nick
names and one has to quote them currently using the "\" character,
which is quite unexpected. For example:
Nick "te[st" => "MODE #channel +b te\[st"
And remove quoting altogether, too, because "*" and "?" don't need
to be quoted because these characters are not allowed in IRC masks,
nicks, and hostnames.
Reported by "hifi" (Toni Spets) on IRC, thanks!
According to RFC 2812 3.2.3 "Channel mode message" and the examples
there, it looks like clients should use "MODE -k <key>" to unset channel
keys; and that's how other servers and services behave and do expect it.
(But please note that this is NOT the case for "MODE -l"!)
In the end, it doesn't make sense to specify a key when UNsetting it at
all, and different services behave diffrently when clients do not send
the currently set key to unset it - some ignore such calls, for example!
But this implementation is quite relaxed, it accepts any key when
unsetting channel mode "k" and even accepts no key at all. But the reply
will always include an "*" character for every "-k" parameter.
C99 states that vsnprintf() "returns the number of characters that
would have been printed if the n were unlimited"; but according to the
Linux manual page "glibc until 2.0.6 would return -1 when the output
was truncated" -- so we have to handle both cases ...
Test functions snprintf(), strlcpy(), strlcat(), vsnprintf() for
correctness, not only existance (which was quite useless, because
if they weren't available, the program could not have been linked
at all ...).
The new configuration variable "Network" is used to set the (completely
optional) "network name", to which this instance of the daemon belongs.
When set, this name is used in the ISUPPORT(005) numeric which is sent to
all clients connecting to the server after logging in.
Closes bug #165.
When DNS lookups are disabled, don't set the hostname received by the
WEBIRC command, but use the IP address instead.
Reported by Toni Spets <toni.spets@iki.fi>, thanks!
Closes bug #167.
At least AIX 4.3.3 and 5.1 have a broken implementation of getaddrinfo()
which doesn't handle "0" as numeric service correctly. This patch adds
a configure check for this case and changes all calling functions to only
use getaddrinfo() if it "works".
See <http://www.stacken.kth.se/lists/heimdal-discuss/2004-05/msg00059.html>
Increase the penalty for a command before checking its arguments. This
makes the handling more consistent and allow us to move more penalties to
Handle_Request().
This fixes the following error when compiling without zlib support:
irc.c: In function ‘Option_String’:
irc.c:487: error: ‘options’ undeclared (first use in this function)
Reported by "der_baer" on #ngircd.
FreeBSD prior to 10.0 does not automatically stir on fork(). Same with
current NetBSD. If arc4random_stir() is present assume is needed and
call it instead of srand().
This fixes the following warning on OpenBSD 5.3:
ngircd.o(.text+0xeb4): In function `main':
src/ngircd/ngircd.c:300: warning: strcat() is almost always misused,
please use strlcat()
Thanks to Götz Hoffart for reporting this!
Kill all clients that match a new GLINE/KLINE mask and genrate apropriate
KILL commands. These KILL commands can be superfluous, but are required
when the IRC Operator isn't allowd to set remote G-Lines or if there are
older servers in the network that don't kill clients on GLINE/KLINE.
Closes bug #156.
The old local function Kill_Nick() in irc.c has been an ugly hack. This
patch implements a generic function for killing clients.
Adjust all callers of Kill_Nick() and respect the return code!
Now invalid prefixes aren't logged no more when originating from an other
server (besides in debug mode), and spoofed prefixes are correctly logged
using LOG_WARNING (from an other server) or LOG_ERR (from a client) levels.
In addition, the log message texts have been adjusted to better reflect
what will happen: commands with invalid prefixes are ignored and logged,
commands with spoofed prefixes will result in the client being disconncted
(regular users) or the command being ignored (other servers).
This cleans up logging of commands related to already KILL'ed clients.
All places where Client_OperByMe() is used can either be converted to
Client_HasMode(Client, 'o') or Op_Check().
And Op_Check() itself can use the connection handle for deciding whether
the IRC Operator is a local user or not.
