Date: Thu, 11 Oct 2001 23:53:27 +0000 From: Michael W.Collette <metrol@metrol.net> To: FreeBSD <freebsd-mobile@FreeBSD.org> Subject: Network Profiler (netprof) Message-ID: <20011012065913.6BE2937B403@hub.freebsd.org>
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[-- Attachment #1 --]
Howdy folks,
Since I've gotten FreeBSD installed on this laptop of mine here one of the
biggest issues I've had is with changing locations. Going from work to home,
or even between buildings at work proves to be a hassle. Dealing with the IP
address, DNS servers, Windows workgroup settings, differing ipfw needs, and
all that. This isn't about my complaining, but rather what I'm working on to
try and simplify this process.
Goals:
1. To be able to switch network configurations on the fly. Should be quick
and easy to set up, and generic enough for most any laptop user to put to use.
2. Use generic shell scripting so as not to require any dependancies, or
allow me to get too clever with how this is done.
Where This Is At:
Attached to this mail is a script I called "netprof". I put it in the /sbin
directory allowing for execution by root only. Anywhere in your path should
work just as well. Before running it you'll need to edit some of the
variables at the very top of the script to match your system. Things like
which network interface you're working with, what config files you want
backed up, and where netprof should store it's files.
The first time you run it, it will create a directory called "/etc/netprof"
(if you left it defaulted) to archive your present network settings. This
simply copies the config files you specified with a "-default" tacked on to
the file name. Once run the first time you can then type...
netprof help
...to get the basic help text on usage. To create a new profile you'd just
go into your various config files like "inetd.conf" and "rc.conf" and make
the tweaks that fit your location. Once you're happy with the config just
give netprof the name.
netprof AtWork
If the profile "AtWork" doesn't exist, netprof asks if you want to create it.
If that profile does exist, then all your config files are updated to that
profile and network services are restarted. If you make a change to your
network config files and you want to update "AtWork" then just type...
netprof update AtWork
You can then get a list of your stored profiles with...
netprof list
Got laid off and want to delete that profile?
netprof delete AtWork
What I Know This Still Needs:
I need to do more work with restarting both pppd and sendmail. At this time
netprof assumes that the only thing you've got is an ethernet connection.
At some point I may work up a seperate config file so you don't have to edit
the script itself. At the moment I just wanted to keep it all in one file as
I work on it.
There needs to be some better error checking to insure the user doesn't use a
profile name that'd goof things up. Using a hyphen in a profile name would
mess things up a bit, and some error checking should be in place to prevent
this.
Why Am I Sending To This List?:
Just looking for some feedback, pointers, or whatever. I've personally found
this to be very useful for me going between networks as it is now, though I
can see that other capabilities will probably be needed. I was hoping that
others might find this of use, and perhaps might even make a port out of it
someday once I get in all the other stuff I'd like to see in it.
So, what ya think?
Later on,
--
"Outside of a dog, a book is man's best friend. Inside of a dog, it's too
dark to read."
- Groucho Marx
[-- Attachment #2 --]
#!/bin/sh
# Network Profiler 0.1 - 12Oct2001
#
# by: Michael Collette - metrol@metrol.net
#
# The goal netprof is to provide a quick and simple means to
# change the basic network settings of a FreeBSD box. This
# is meant to make life a bit easier for folks using FreeBSD
# on a laptop or some other mobile device where different
# locations and network settings are common.
#################################
# Basic Config Variables (Change these to your needs)
Interface="ed0"
NetProfDir="/etc/netprof"
#################################
# Files to be worked with
x="/etc/rc.conf"
x="$x /etc/resolv.conf"
x="$x /etc/hosts"
x="$x /etc/firewall/fwrules"
x="$x /etc/ppp/ppp.conf"
x="$x /usr/local/etc/smb.conf"
##############################
# From here out it's all code
ConfigFiles="$x"
Seperator="-"
NetProfVer="0"
NetProfRev="1"
NetProfDate="12 Oct 2001"
# Check to make sure this is run as 'root'
if [ `whoami` != "root" ]; then
echo
echo
echo "## Warning ##"
echo "## ##"
echo "## You need to be logged in as root to run netprof ##"
echo "## ##"
echo "## Warning ##"
echo
echo "Exiting..."
echo
exit
fi
######################################
# User response verification funtions
TestAns () {
case $1 in
[Yy])
return 2
;;
[Nn])
return 1
;;
*)
return 0
;;
esac
}
AskUser () {
while [ $? -eq 0 ]; do
echo -n "Answer y or n, then press RETURN: "
read ans
TestAns $ans
done
return $?
}
############################
# File Copying Fucntions
ArchiveConfigs () {
ProfName=$1
for WorkFile in $ConfigFiles; do
if [ -e $WorkFile ]; then
ArchFile="${NetProfDir}/${WorkFile##*/}$Seperator$ProfName"
cp -vf ${WorkFile} ${ArchFile}
fi
done
}
ArchiveList () {
ls $NetProfDir | cut -d- -f2 | sort -u
}
DeployProfile () {
ProfName=$1
for WorkFile in $ConfigFiles; do
if [ -e $WorkFile ]; then
ArchFile="$NetProfDir/${WorkFile##*/}$Seperator$ProfName"
cp -vf ${WorkFile} ${ArchFile}
fi
done
}
####################
# Give a howdy
clear
echo
echo "#---------------------------------------------------------#"
echo "#--------------- Network Profile Manager -----------------#"
echo "# Version $NetProfVer.$NetProfRev $NetProfDate #"
echo "# by: Michael Collette #"
echo "# metrol@metrol.net #"
echo "#---------------------------------------------------------#"
echo
# Check for a first time run of the script
if [ ! -d $NetProfDir ]; then
echo "It looks like this is the first time you've run netprof."
echo
echo "To continue netprof will need to create" $NetProfDir
echo "and copy your network config files into it. Is this okay"
echo "for me to do now?"
AskUser
if [ $? = 2 ]; then
echo
echo "Creating Directory"
echo "----------------------------------------------------"
mkdir -v -m 700 $NetProfDir
echo
echo "Creating copies of your present network configuration"
echo "----------------------------------------------------"
ArchiveConfigs default
echo
echo " A profile called 'default' has been created for you."
echo "To reset your network settings to the present time simply"
echo "type 'netprof default'. To later update this profile you'd"
echo "then type 'netprof update default'."
echo " A full breakdown of commands and usage can be accessed by"
echo "typing 'netprof help'. Have fun with it!"
echo
echo "Exiting...."
echo
exit
fi
fi
###############################
# Command Parser
if [ $# -gt 0 ]; then
#
# help command
#
if [ $1 = "help" ]; then
echo "netprof usage..."
echo ""
echo "Create a new profile: netprof {profilename}"
echo "Switch to existing profile: netprof {profilename}"
echo "List all available profiles: netprof list"
echo "Delete a profile: netprof delete {profilename}"
echo "Update an existing profile: netprof update {profilename}"
echo ""
echo " Replace {profilename} with the name of the profile you wish"
echo "to work with."
echo " For example, let's say that the user wants to set up a network"
echo "profile for home, and one for work. To do this the user would"
echo "while at work log in as root and do the following..."
echo ""
echo "> netprof"
echo " This creates the default archive. Then type..."
echo "> netprof work"
echo " Now a 'work' profile is created. When at home the user alters the"
echo "config files as needed then types..."
echo "> netprof home"
echo " To switch between the profiles, simply repeat the same command and the"
echo "the network settings will switch to the profile specified."
echo ""
exit
fi
#
# update command
#
if [ $1 = "update" ]; then
if [ $# -gt 1 ]; then
# Do we have a profile by the name requested?
if [ ! -z `ls $NetProfDir | cut -d- -f2 | sort -u | grep -w $2` ]; then
echo
echo "Update network profile $2 ??"
echo
AskUser
if [ $? -eq 2 ]; then
echo "Updating profile $2 with your present network configuration"
echo "---------------------------------------------------------"
ArchiveConfigs $2
echo
exit
else
exit
fi
else
echo
echo "Can't locate a profile called $2."
echo "Would you like to create one?"
echo
AskUser
if [ $? -eq 2 ]; then
echo "Creating profile $2 of your present network configuration"
echo "---------------------------------------------------------"
ArchiveConfigs $2
echo
exit
else
exit
fi
fi
else
echo "You have asked for an update but you did not specify"
echo "which profile you wish to update."
echo
echo "For example, to update a profile called 'work' you'd enter..."
echo "> netprof update work"
echo
echo "Exiting..."
echo
exit
fi
exit
fi
#
# delete command
#
if [ $1 = "delete" ]; then
# Make sure there's a second parameter
if [ $# -gt 1 ]; then
# Do we have a profile by the name requested?
if [ ! -z `ls $NetProfDir | cut -d- -f2 | sort -u | grep -w $2` ]; then
echo
echo "You really sure you want to delete the profile '$2'?"
echo
AskUser
if [ $? -eq 2 ]; then
echo
echo " Deleting profile $2"
echo "---------------------"
rm -fv $NetProfDir/*-$2
echo
exit
else
echo
echo "Profile $2 was NOT deleted"
echo
echo "Exiting..."
echo
exit
fi
else
echo
echo "Can't find a profile called $2. Try doing a 'netprof list'"
echo "to find the profile you wish to delete."
echo
exit
fi
else
echo
echo "You have requested a delete, but you have not specified a"
echo "profile name. For example, to delete a profile called 'work'"
echo "you would type..."
echo
echo "> netprof delete work"
echo
exit
fi
fi
#
# list command
#
if [ $1 = "list" ]; then
GotCommand=1
echo " Profiles presently stored"
echo "-----------------------------"
ArchiveList
echo
exit
fi
fi
##################################
# Profile Manager
ResetNetwork=0
if [ $# -gt 0 ]; then
# Do we have a profile by the name requested?
if [ ! -z `ls $NetProfDir | cut -d- -f2 | sort -u | grep -w $1` ]; then
# Switch to the profile requested
echo
echo " Deploying Profile $1"
echo "------------------------------"
DeployProfile $1
echo
ResetNetwork=1
else
# Create a new profile
echo
echo "Create network profile $1 ??"
echo
AskUser
if [ $? -eq 2 ]; then
echo "Creating profile $1 with your present network configuration"
echo "-----------------------------------------------------------"
ArchiveConfigs $1
echo
exit
fi
exit
fi
else
echo "In order to make use of netprof you need to pass along"
echo "some instructions. For more information type..."
echo
echo "> netprof help"
echo
exit
fi
##############################
# Reset the networking
if [ $ResetNetwork -eq 1 ]; then
# Suck in the configuration variables.
if [ -z "${source_rc_confs_defined}" ]; then
if [ -r /etc/defaults/rc.conf ]; then
. /etc/defaults/rc.conf
source_rc_confs
elif [ -r /etc/rc.conf ]; then
. /etc/rc.conf
fi
fi
# Change the IP info
if [ "${pccard_ifconfig}" = "DHCP" ]; then
dhclient
else
ifconfig ${Interface} ${pccard_ifconfig}
route -n add default ${defaultrouter}
fi
if [ $firewall_enable = "YES" ]; then
echo " Updating firewall rules"
echo "-----------------------------"
$firewall_script
echo
fi
# Restart Samba if installed
if [ -e /usr/local/sbin/smbd ]; then
if [ -e /var/run/smbd.pid ]; then
echo "Restarting Samba....."
echo
kill `cat /var/run/smbd.pid`
kill `cat /var/run/smbd.pid`
/usr/local/sbin/smbd -D
/usr/local/sbin/nmbd -D
else
echo "Starting Samba....."
echo
/usr/local/sbin/smbd -D
# /usr/local/sbin/nmbd -D
fi
fi
if [ $inetd_enable = "YES" ]; then
if [ -e /var/run/inetd.pid ]; then
echo "Restarting inetd....."
killall -HUP inetd
echo
else
inetd
fi
fi
echo
echo "Network reset to profile '$1'"
echo
fi
exit
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