Mapping port to pid in solaris

In solaris, how can you tell which process is binding to certain port? Given a limited user privilege, and no lsof available. Please let me know if you have the answer. In the meantime, I have to stick with the script written by Lubos Kosco:

#!/bin/bash

# Get the process which listens on port

# $1 is the port we are looking for

if [ $# -lt 1 ]
then
echo "Please provide a port number parameter for this script"
echo "e.g. $0 22"
exit
fi

echo "Greping for your port, please be patient (CTRL+C breaks) ... "

for i in `ls /proc`
do
pfiles $i | grep AF_INET | grep $1
if [ $? -eq 0 ]
then
echo Is owned by pid $i
fi
done

The original page is here. Thanks Lubos and thanks google.