(launchd) (inetdCompatibility) Remote IP -- how?

Question

(launchd) (inetdCompatibility) Remote IP -- how?

Remote IP is an essential property of incoming connection. As it often happens with essetial properties, they are forgotten. So far, I can see no way to detect the address of the other side. I have looked into man launchd.plist, I have searched on the Internet. Nobody demands knowledge of Remote IP???

I have checked environment variables and arguments. No any trace of remote IP. It looks really stupid. How can one do something advanced without being aware of an host he is dealing with?

Hackintosh, Mac OS X (10.4.8)

Posted on Apr 21, 2009 2:00 PM

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Answer 1

BobHarris

Level 9

56,915 points

Apr 21, 2009 5:20 PM in response to OCTAGRAM {8-3}__

I do not understand what it is you want.

Are you trying to figure out the IP address of some random remote system which is connecting to your system?

Then I would ask what method is being used to make the connection?

You might look at lsof (lsof -i)
You might look at netstat

A better explanation of exactly what you want to find and under what conditions might make things easier.

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Answer 2

Apr 21, 2009 5:56 PM in response to BobHarris

I'm running sn nntp server. It is supposed to be run with stdin&stdout bound to network socket. It doesn't listen on network port by itself.

I need IP address of every incoming connection. I'd like to track IPs of everybody posting to my server and also restrict NewsPortal access to just 1 IP.

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Answer 3

Camelot

Level 9

58,461 points

Apr 21, 2009 7:10 PM in response to OCTAGRAM {8-3}__

If you've configured launchd to listen on a port and pass the connection to the daemon, then the daemon should be able to determine the remote IP address from the connection.

Come to think of it, I don't know any other way you expect this to work. It's no different from any other process in that respect.

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Answer 4

Apr 22, 2009 12:21 AM in response to Camelot

launchproxy is the actual daemon responsible for dealing with connections: listening, accepting etc. launchproxy is no doubt able to determine remote IP, but how should I get it from it? launchproxy invokes my nntpd.sh for every connection, and I can see no IP from this point.

BTW I use this to debug processes not owned by me:
sudo mkfifo -m 0666 /FIFO
( while true; do cat /FIFO | growlnotify; done ) & # I execute this line from my Terminal session
previously, I used:
( while true; do cat /FIFO | open -f; done ) & # the same, but opens in TextEdit windows

Having done that I can see debug output without regards to the session/uid/etc. of the running process: "echo something > /FIFO" works everywhere.

It seems that I must use another superserver. Can anybody suggest me another one well suited for Mac OS X?

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Answer 5

Apr 22, 2009 2:09 PM in response to OCTAGRAM {8-3}__

I have downloaded launchd sources. I confirm that there was no mechanism for supplying connection information. I haven't sought one, at least.

I have patched launchproxy so that it pass connection info in the environment variables:

Patch:

http://octagram.gorodok.net/launchd-8g.patch

Picture:

http://octagram.gorodok.net/images/launchd-patch-works.png

Everything seems to be fine now.

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