| #!/bin/sh |
| |
| ################################################################################ |
| ## ## |
| ## Copyright (c) International Business Machines Corp., 2005 ## |
| ## ## |
| ## This program is free software; you can redistribute it and#or modify ## |
| ## it under the terms of the GNU General Public License as published by ## |
| ## the Free Software Foundation; either version 2 of the License, or ## |
| ## (at your option) any later version. ## |
| ## ## |
| ## This program is distributed in the hope that it will be useful, but ## |
| ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## |
| ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## |
| ## for more details. ## |
| ## ## |
| ## You should have received a copy of the GNU General Public License ## |
| ## along with this program; if not, write to the Free Software ## |
| ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ## |
| ## ## |
| ## ## |
| ################################################################################ |
| # |
| # File: |
| # find_portbundle |
| # |
| # Description: |
| # Find a bundle of consecutive ports |
| # |
| # Arguments: |
| # $1: tcp or udp |
| # $2: port which is the start point to check |
| # $3: quantity of the ports |
| # |
| # Returns: |
| # 0: Success |
| # 1: Fail |
| # |
| # Author: |
| # Mitsuru Chinen <mitch@jp.ibm.com> |
| # |
| # History: |
| # Oct 19 2005 - Created (Mitsuru Chinen) |
| # |
| #----------------------------------------------------------------------- |
| #Uncomment line below for debug output. |
| #trace_logic=${trace_logic:-"set -x"} |
| $trace_logic |
| |
| # Make sure the value of LTPROOT |
| LTPROOT=${LTPROOT:-`(cd ../../../../ ; pwd)`} |
| export LTPROOT |
| |
| |
| # Check argument |
| if [ $# -ne 3 ] ; then |
| echo "Usage: find_portbundle protocol start_port quantity_of_ports" >&2 |
| exit 1 |
| fi |
| protocol=$1 |
| start_port=$2 |
| port_quantity=$3 |
| |
| # Specify the option of the nestat command |
| case $protocol in |
| tcp) |
| proto_opt="-t" |
| ;; |
| udp) |
| proto_opt="-u" |
| ;; |
| *) |
| echo "$protocol is not supported" >&2 |
| exit 1 |
| ;; |
| esac |
| |
| # Create the open port list |
| port_list=`mktemp` |
| netstat -a -n ${proto_opt} \ |
| | tail -n +3 \ |
| | awk '{ print $4 }' \ |
| | sed 's/^.*://' \ |
| | sort -n \ |
| | uniq > ${port_list} |
| |
| # Search the available ports |
| skip=1 |
| min_port=$start_port |
| max_port=`expr $min_port + $port_quantity - 1` |
| if [ ${max_port} -gt 65535 ]; then |
| rm -f $port_list |
| exit 1 |
| fi |
| |
| while read line ; do |
| # Skip to the required port |
| if [ $skip -eq 1 ]; then |
| if [ $line -lt $start_port ]; then |
| continue |
| else |
| skip=0 |
| fi |
| fi |
| |
| # If required quantity of the port isn't available, seach in the next range |
| if [ $line -le $max_port ]; then |
| min_port=`expr $line + 1` |
| max_port=`expr $min_port + $port_quantity - 1` |
| if [ $max_port -gt 65535 ]; then |
| rm -f $port_list |
| exit 1 |
| fi |
| continue |
| fi |
| break |
| done < $port_list |
| |
| rm -f $port_list |
| |
| # Print the result. If required quantity is not 1, print in range expression |
| if [ $min_port -eq $max_port ]; then |
| echo "$min_port" |
| else |
| echo "$min_port-$max_port" |
| fi |
| |
| exit 0 |