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.)
from bugzilla #105:
"ngircd-16 works great under openbsd4.7/i386, but it segfaults on
openbsd4.7/amd64."
Caused by missing function prototypes and the resulting truncation of
pointer to int.
Lets try to catch these bugs during compilation instead of SIGSEGV.
Alexander Barton