This avoids a race and potentionally killing the wrong process on
systems that use randomized process IDs; now the child itself is
responsible to exit in a timely manner using SIGALRM.
Some variables are only used when compiling with IDENT or PAM support
or when the debug code is enabled. Mark them as "unused" so that gcc
doesn't generate warnings when neither of these options is enabled.
When the "NoPAM" configuration option is set and ngIRCd is compiled
with support for PAM, ngIRCd will not call any PAM functions: all
connection attemps without password will succeed instead and all
connection attemps with password will fail.
If ngIRCd is compiled without PAM support, this option is a dummy
option and nothing changes: the global server password will still be
in effect.
For each client connection a child process is forked which handles the
actual PAM authentication and reports the result back to the master
process using a pipe for communication.
While the PAM authentication is in process the daemon does not block.
The Client_SetOrigUser() function is used to store the peer-provided
user name (see USER command) in its original form, not changed by
IDENT results, for example.
Rename Log_Init_Resolver, Log_Exit_Resolver, and Log_Resolver to
Log_Init_Subprocess, Log_Exit_Subprocess, and Log_Subprocess and
make it more generic thereby.
The logic isn't as described in the source and intended by this code:
ngIRCd doesn't wait for the asynchronous resolver process until the set
penalty time is over, but until the forked process terminates or the
initial connection timeout (= PongTimeout) triggers.
So don't set the penalty time at all and remove the wrong comment.
We want to use this process status variable not only for the
resolver subprocesses but other asynchronous tasks as well;
so let's name it more generic.
The new "module" proc.c is used for functions dealing with child
processes. At the moment, it is only used by the asynchronous resolver.
All the functions already implemented habe been migrated from the
resolver code base, and the rest of the ngIRCd source code has been
adepted to the new namespace and calling conventions.
The goal is to develop "generic" process handling functions that can
be used for other purposes as well, e.g. running processes on client
connects etc.
The wrongly placed #endif lead to the following compiler warnings:
conn.h:125: warning: redundant redeclaration of ‘Conn_Count’
conn.h:125: warning: previous declaration of ‘Conn_Count’ was here
conn.h:126: warning: redundant redeclaration of ‘Conn_CountMax’
conn.h:126: warning: previous declaration of ‘Conn_CountMax’ was here
conn.h:127: warning: redundant redeclaration of ‘Conn_CountAccepted’
conn.h:127: warning: previous declaration of ‘Conn_CountAccepted’ was here
Users having the user mode "c" set receive NOTICE messages on each
new client connection to the local server as well as disconnects.
Only IRC operators (users having the mode "o" set) are allowed to
set the 'c' user mode.
These connect/disconnect messages can be useful for open proxy
scanners -- BOPM (http://wiki.blitzed.org/BOPM) is now functional
with ngIRCd, for example.
"I've been wanting this for years and finally took the 5 minutes to
patch it in. I took the response code (275) from whatever's running
OFTC's IRC network."
-- Neale Pickett <neale@woozle.org>, Fri, 11 Jun 2010 17:32:41 -0500
(OFTC is running Hybrid ircd.)
It is not possible to call Conn_Close() after Client_Destroy() has been
called, because Conn_Close wants to access the CLIENT structure which
then has been freed already.
Fix IRC_KILL to use Conn_Close() for local clients and Client_Destroy()
for remote clients only (and never both).
When we get there then the ssl handshake has failed, or
we could not create a ssl context because ssl library
initialization failed on startup.
Reflect that in the log message.
When ngIRCd restarts, all the connection counters are preserved now,
as well as the command counters for example.
It's unclear if resetting or not resetting is the "correct" behaviour,
but it's quite clear that the behaviour should be consistent for all the
counters ngIRCd uses ...
And initializing "WCounter", the global but temporary write counter,
is not necessarry at all: it is initialized (reset) before its use in
the command parser (see parse.c).
The RPL_STATSCONN numeric (250) displays information about the
highest simoultaneous connection count and the number of all
accepted connections since the daemon started up.
Used by ircd-Hybrid, Bahamut, and Unreal for example.
This patch enables ngIRCd to count the highest maximum simultaneous
connections and all the connections accepted since startup.
New functions:
- Conn_Count(): get current connections
- Conn_CountMax(): maximum simultaneous connections
- Conn_CountAccepted(): number of connections accepted
This fixes the following error when compiling on e.g. FreeBSD 6.x:
In file included from conn.c:40:
/usr/include/netinet/ip.h:160: error: syntax error before "n_long"
/usr/include/netinet/ip.h:163: error: syntax error before "n_long"
This patch fixes two warnings of gcc 4.4.3 when used with eglibc 2.11.1:
ngircd.c: In function ‘NGIRCd_Init’:
ngircd.c:801: warning: ignoring return value of ‘chdir’, declared with
attribute warn_unused_result
conn.c: In function ‘Simple_Message’:
conn.c:2041: warning: ignoring return value of ‘write’, declared with
attribute warn_unused_result
The first by checking the return code and an appropriate error message,
the second by "better" ignoring it (which is correct there!) ...
The WEBIRC command is used by some Web-to-IRC gateways to set the correct
user name and host name of users instead of their own.
Syntax: WEBIRC <password> <username> <hostname> <ip-address>
The <password> must be set using the new configuration variable "WebircPassword" in the [Global] section of ngircd.conf.
Please note that the <ip-address> is currently not used by ngIRCd (we don't store it in the CLIENT structure, only the resolved hostname).
Only clients using a SSL encrypted connection to the server are
allowed to join such a channel.
But please note three things:
a) already joined clients are not checked when setting this mode,
b) IRC operators are always allowed to join every channel, and
c) remote clients using a server not supporting this mode are not
checked either and therefore always allowed to join.
Now the numeric 004 correctly reports all the supported user and channel
modes (user modes "r" and "w" were missing), e. g.:
:a.irc.net 004 a a.irc.net ngircd-15 aiorsw biIklmnoPstv
Print "SSLOptionVar =" instead of omitting the option when
running --configtest with ssl enabled.
This better matches the behaviour of other options, e.g. ChrootDir.
This patch enables IRC Operators to use the SQUIT command as specified in
RFC 2812, section 3.1.8 "Squit".
When forwarding SQUIT commands, the server connected to the target will
drop the connection (not the target server itself!).
Please note:
- the configuration option "AllowRemoteOper" mus be enabled on the
server disconnecting the target to allow forwarding of SQUIT commands.
- if the remote server is configured to establish the connection, it
will just do this; so the disconnect is not permanent in this case!
The new "module" op.c is used to implement functions related to IRC Ops.
At the moment, these two functions are available:
- Op_Check() to check for a valid IRC Op, and
- Op_NoPrivileges() to generate "permission denied" messages.
The syntax of the CONNECT command now is:
- CONNECT <server-id>
- CONNECT <server-id> <port>
- CONNECT <server-id> <port> <target>
- CONNECT <server-id> <port> <host> <my-pwd> <peer-pwd>
- CONNECT <server-id> <port> <host> <my-pwd> <peer-pwd> <target>
Note: the configuration option "AllowRemoteOper" mus be enabled on the
target server to allow forwarding of CONNECT commands.
Added new configuration option "AllowRemoteOper" to control whether
remote IRC operators are allowed to use administrative commands that
affect this server or not
This commit introduces the configuration variable, but actually no
function is using it. That's up for the next patches to come ...
when building with debugging enabled, but without ipv6 support,
ngircd dumped core when loading a config file that specified an ipv6
listen address.
ngircd: ng_ipaddr.c:45: ng_ipaddr_init: Assertion `sizeof(*addr) >=
res0->ai_addrlen' failed.
Test for sockaddr_in.sin_len and initialize it to the correct value
which some systems (notably Mac OS X) require.
Note: this code path is only relevant when not using getaddrinfo().
A configured server could have been removed while a connection apptempt
is still in progress. So the cb_connserver() callback has to test if the
server configuration record is still valid.
fix the following warning generated by valgrind if ipv6 is enabled:
Syscall param write(buf) points to uninitialised byte(s)
at 0x4000982: (within /lib/ld-2.9.so)
by 0x80681A8: Resolve_Name (resolve.c:477)
by 0x805439F: Conn_Handler (conn.c:1658)
by 0x804AA7C: main (ngircd.c:331)
The warning is because ng_ipaddr_t can be a union, and only the
necessary parts are initialised. The callers know what part
of the union is valid, so this is not a bug.
if more than one ip address is returned for a single host
name, ngircd is supposed to try other addresses in case
connect() to the first address returned fails for some
reason.
Alexander Barton noticed that this did not work at all,
as the additional results were not stored.
Cosmo Kastemaa reported that its impossible to create an ssl-only setup,
as ngircd binds to port 6667 by default, even if setting "Ports =".
Only add the default port if _both_ "Ports" and "SSLPorts" are
unspecified.
Fixes bugzilla #98.
This patch fixes the following silly log messages:
'ID "XXX" already registered (on connection -1)!'
If the ID is already registered on a local connection, the local
connection ID is printed; and if the ID is connected via a remote
server, "via network" is displayed.
Florian Westphal