In article <202005281646.34790.gary.stainburn@xxxxxxxxxxxxxx>,
Gary Stainburn <gary.stainburn@xxxxxxxxxxxxxx> wrote:
> Hi all,
>
> I can't believe that I can't find the answer to this one. I have a perl script which is called by xinetd.
>
> I want that perl script to be able to detect the remote IP address of the caller.
>
> I presumed that it would be an environment variable but I could be wrong. I've found reference to the ENV and PASSENV
> arguments for xinetd.conf but no examples, and no indication of what auguments to use.
>
> In my script I have the following code:
>
> foreach (keys %ENV) { print "$_=$ENV{$_}\n";}
>
>
> but the only line I get back is:
>
> XINETD_LANG=en_US
Works for me. Here are my details:
1. /usr/local/bin/args:
#!/usr/bin/perl
$i=1;
while(defined($_ = shift)) {
printf "ARGV[%d]=\"%s\"\n",$i++,$_;
}
foreach $env (keys %ENV) {
printf "ENV{%s}=\"%s\"\n",$env,$ENV{$env};
}
2. /etc/xinetd.d/args:
service args
{
disable = no
port = 54321
type = UNLISTED
socket_type = stream
wait = no
user = root
server = /usr/local/bin/args
server_args = --test
log_on_failure += USERID
}
3. Results of telnet 127.0.0.1 54321:
# telnet 127.0.0.1 54321
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
ARGV[1]="--test"
ENV{CONSOLE}="/dev/console"
ENV{PREVLEVEL}="N"
ENV{SELINUX_INIT}="YES"
ENV{LC_COLLATE}="en_US"
ENV{RUNLEVEL}="3"
ENV{LC_ALL}="en_US"
ENV{previous}="N"
ENV{LC_NUMERIC}="en_US"
ENV{PWD}="/"
ENV{LC_TIME}="en_US"
ENV{LANG}="en_US"
ENV{LC_MESSAGES}="en_US"
ENV{runlevel}="3"
ENV{INIT_VERSION}="sysvinit-2.86"
ENV{SHLVL}="3"
ENV{LC_MONETARY}="en_US"
ENV{_}="/usr/sbin/xinetd"
ENV{PATH}="/sbin:/usr/sbin:/bin:/usr/bin"
ENV{vga}="773"
ENV{REMOTE_HOST}="127.0.0.1"
ENV{TERM}="linux"
Connection closed by foreign host.
Notice the value of ENV{REMOTE_HOST}
Cheers
Tony
--
Tony Mountifield
Work: tony@xxxxxxxxxxxxx - http://www.softins.co.uk
Play: tony@xxxxxxxxxxxxxxx - http://tony.mountifield.org
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