minix/commands/netconf/netconf.sh

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#!/bin/sh
#
# netconf 0.1 - Configure network
#
# Changes:
#
# Get system config
. /etc/rc.conf
LOCALRC=/usr/etc/rc.local
INETCONF=/etc/inet.conf
RCNET=/etc/rc.net
HOSTS=/etc/hosts
HOSTNAME=/etc/hostname.file
USRKBFILE=/.usrkb
LSPCI=/tmp/lspci.$$
DEVICES=/tmp/devices.$$
step1=""
step2=""
step3=""
v=1 # verbosity
manual_opts=0
prefix=""
cd="no" # running from cd?
eth=""
driver=""
driverargs=""
config=""
manual=""
dhcp="no"
hostname=""
hostname_prev=""
ip=""
ip_prev=""
netmask=""
netmask_prev=""
gateway=""
dns1=""
dns2=""
# Provide some sane defaults
hostname_default=`uname -n`
test -z "$hostname_default" && hostname_default="Minix"
ip_default="10.0.0.1"
netmask_default="255.255.255.0"
gateway_default=""
usage()
{
cat >&2 <<'EOF'
Usage:
netconf [-q] [-p <prefix>] [-e <num>] [-a]
netconf [-H <name> -i <ip> -n <mask> -g <gw> -d <prim dns> [-s <sec dns>]]
flags:
-q Limit generated output
-p Path prefix for configuration files (e.g., during install -p mnt is used as files are mounted on /mnt).
-e Ethernet card
-a Use DHCP (-H, -i, -n, -g, -d, and -s flags are discarded)
-H Hostname
-i IP address
-n Netmask
-g Default gateway
-d Primary DNS
-s Secondary DNS
-h Shows this help file
-c Shows a list of ethernet cards supported
By default netconf starts in Interactive mode. By providing parameters on the
command line, some questions can be omitted.
EOF
exit 1
}
card()
{
card_number=$1
card_name=$2
card_avail=0
shift 2
while [ $# -gt 0 ]
do
cat $LSPCI | grep > /dev/null "^$1" && card_avail=1
shift
done
if [ $card_avail -gt 0 ]
then
card_mark="*"
eth_default=$card_number
else
card_mark=" "
fi
printf "%2d. %s %s\n" "$card_number" "$card_mark" "$card_name"
}
first_pcicard=5
cards()
{
# Run lspci once to a temp file for use in 'card' function
lspci >$LSPCI 2>/dev/null || true
card 0 "No Ethernet card (no networking)"
card 1 "3Com 501 or 3Com 509 based card"
card 2 "Realtek 8029 based card (also emulated by Qemu)" "10EC:8029"
card 3 "NE2000, 3com 503 or WD based card (also emulated by Bochs)"
card 4 "lan8710a (on BeagleBone, BeagleBone Black)"
n=$first_pcicard
for pcicard in $pci_list
do var=\$pci_descr$pcicard; descr="`eval echo $var`"
var=\$pci_pcilist$pcicard; pcilist="`eval echo $var`"
card $n "$descr" $pcilist
n="`expr $n + 1`"
done
card $first_after_pci "Different Ethernet card (no networking)"
# Remove temporary lspci output
rm -f $LSPCI
}
warn()
{
echo -e "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b ! $1"
}
config_pci_cards() {
rm -f $DEVICES
n=0
# Collect configs from network devices
for dir in $SYSTEM_CONF_DIRS
do for f in $dir/$SYSTEM_CONF_SUBDIR/*
do if [ -f $f ]
then printconfig $f | grep 'type net.*pci device'
fi
done
done >$DEVICES
while read devline
do pcilist="`echo $devline | sed 's/.*pci device //' | sed 's/,.*//'`"
descr="`echo $devline | sed 's/.*,descr //' | sed 's/,.*//'`"
label="`echo $devline | sed 's/.*service //' | sed 's/,.*//'`"
pci_list="$pci_list $n"
eval "pci_pcilist$n=\"$pcilist\""
eval "pci_descr$n=\"$descr\""
eval "pci_label$n=\"$label\""
n="`expr $n + 1`"
done <$DEVICES
first_after_pci=`expr $first_pcicard + $n`
rm -f $DEVICES
}
do_step1()
{
eth_default=0
# Ask user about networking
echo "MINIX 3 currently supports the following Ethernet cards. PCI cards detected"
echo "by MINIX are marked with *. Please choose: "
echo ""
cards
echo ""
while [ "$step1" != ok ]; do
echo -n "Ethernet card? [$eth_default] "; read eth
test -z $eth && eth=$eth_default
drv_params $eth
test -n "$driver" && step1="ok"
done
}
drv_params()
{
# If this is a known pci device, we only have to set
# the driver.
if [ $1 -ge $first_pcicard -a $1 -lt $first_after_pci ]
then pcicard="`expr $1 - $first_pcicard`"
var=\$pci_label$pcicard; driver="`eval echo $var`"
return
fi
# Other possibilities.
case "$1" in
0) driver=psip0; ;;
1) driver=dpeth; driverargs="#dpeth_arg='DPETH0=port:irq:memory'";
test "$v" = 1 && echo ""
test "$v" = 1 && echo "Note: After installing, edit $LOCALRC to the right configuration."
;;
2) driver=dp8390; driverargs="dp8390_arg='DPETH0=pci'"; ;;
3) driver=dp8390; driverargs="dp8390_arg='DPETH0=240:9'";
test "$v" = 1 && echo ""
test "$v" = 1 && echo "Note: After installing, edit $LOCALRC to the right configuration."
test "$v" = 1 && echo " chose option 4, the defaults for emulation by Bochs have been set."
;;
4) driver=lan8710a; ;;
$first_after_pci) driver="psip0"; ;;
*) warn "choose a number"
esac
}
do_step2()
{
echo ""
echo "Configure network using DHCP or manually?"
echo ""
echo "1. Automatically using DHCP"
echo "2. Manually"
echo ""
while [ "$step2" != ok ]
do
echo -n "Configure method? [1] "; read config
test -z $config && config=1
case "$config" in
1) step2="ok"; dhcp="yes" ; ;;
2) step2="ok"; manual="do"; ;;
*) warn "choose a number"
esac
done
# Use manual parameters?
if [ -n "$manual" ]; then
# Query user for settings
# Hostname
if [ -z $hostname_prev ]; then
hostname_prev=$hostname_default
fi
echo -n "Hostname [$hostname_prev]: "
read hostname
if [ ! -z $hostname ]; then
hostname_prev=$hostname
else
hostname=$hostname_prev
fi
# IP address
if [ -z $ip_prev ]; then
ip_prev=$ip_default
fi
echo -n "IP address [$ip_prev]: "
read ip
if [ ! -z $ip ]; then
ip_prev=$ip
else
ip=$ip_prev
fi
# Netmask
if [ -z $netmask_prev ]; then
netmask_prev=$netmask_default
fi
echo -n "Netmask [$netmask_prev]: "
read netmask
if [ ! -z $netmask ]; then
netmask_prev=$netmask
else
netmask=$netmask_prev
fi
# Gateway (no gateway is fine for local networking)
echo -n "Gateway: "
read gateway
# DNS Servers
echo -n "Primary DNS Server [$dns1_prev]: "
read dns1
test -z "$dns1" && test -n "$dns1_prev" && dns1=$dns1_prev
if [ ! -z "$dns1" ]; then
dns1_prev=$dns1
echo -n "Secondary DNS Server [$dns2_prev]: "
read dns2
if [ ! -z $dns2 ]; then
dns2_prev=$dns2
fi
else
# If no primary DNS, then also no secondary DNS
dns2=""
fi
fi
}
# Find pci cards we know about
config_pci_cards
# Parse options
while getopts ":qe:p:aH:i:n:g:d:s:hc" arg; do
case "$arg" in
q) v=0; ;;
e) ethernet=$OPTARG;
test "$ethernet" -ge 0 -a "$ethernet" -le 7 2>/dev/null || usage
drv_params $ethernet
;;
p) prefix=$OPTARG; ;;
a) dhcp="yes"; ;;
H) hostname=$OPTARG; manual_opts=`expr $manual_opts '+' 1`;;
i) ip=$OPTARG; manual_opts=`expr $manual_opts '+' 1`;;
n) netmask=$OPTARG; manual_opts=`expr $manual_opts '+' 1`;;
g) gateway=$OPTARG; manual_opts=`expr $manual_opts '+' 1`;;
d) dns1=$OPTARG; ;;
s) dns2=$OPTARG; ;;
h) usage ;;
c) echo -e "The following cards are supported by Minix:\n";
cards; exit 0
;;
\?) echo "Unknown option -$OPTARG"; usage ;;
:) echo "Missing required argument for -$OPTARG"; usage ;;
*) usage ;;
esac
done
# Verify parameter count
if [ "$dhcp" != "yes" ] ; then
if [ $manual_opts -gt 0 ] ; then
test $manual_opts -eq 4 -a -n "$dns1" || usage
manual="do"
fi
fi
if [ -n "$prefix" ] ; then
LOCALRC=$prefix$LOCALRC
INETCONF=$prefix$INETCONF
RCNET=$prefix$RCNET
HOSTS=$prefix$HOSTS
HOSTNAME=$prefix$HOSTNAME
if [ ! -f $INETCONF ]; then
echo -e "It seems the supplied prefix (\`$prefix') is invalid."
exit 1
fi
fi
if [ `whoami` != root ] ; then
test "$v" = 1 && echo "Please run netconf as root."
exit 1
fi
# Are we running from CD?
if [ -f "$USRKBFILE" ] ; then
cd="yes" # We are running from CD
fi
# Do we know what ethernet card to use?
test -z "$ethernet" && do_step1
# If no parameters are supplied and we're not using DHCP, query for settings
test $manual_opts -eq 0 -a "$dhcp" = "no" && do_step2
# Store settings.
# Do not make backups if we're running from CD
test "$cd" != "yes" && test -f $INETCONF && mv $INETCONF "$INETCONF~" &&
test "$v" = 1 && echo "Backed up $INETCONF to $INETCONF~"
test "$cd" != "yes" && test -f $LOCALRC && mv $LOCALRC "$LOCALRC~" &&
test "$v" = 1 && echo "Backed up $LOCALRC to $LOCALRC~"
if [ "$driver" = "psip0" ]; then
echo "psip0 { default; } ;" > $INETCONF
else
echo "eth0 $driver 0 { default; } ;" > $INETCONF
fi
echo "$driverargs" > $LOCALRC
if [ -n "$manual" ]
then
# Backup config file if it exists and we're not running from CD
test "$cd" != "yes" && test -f $RCNET && mv $RCNET "$RCNET~" &&
test "$v" = 1 && echo "Backed up $RCNET to $RCNET~"
test "$cd" != "yes" && test -f $HOSTS && mv $HOSTS "$HOSTS~" &&
test "$v" = 1 && echo "Backed up $HOSTS to $HOSTS~"
# Store manual config
echo "ifconfig -I /dev/ip0 -n $netmask -h $ip" > $RCNET
test ! -z $gateway && echo "add_route -g $gateway" >> $RCNET
echo "daemonize nonamed -L" >> $RCNET
test ! -z $dns1 && echo -e "$ip\t%nameserver\t#$hostname" > $HOSTS
test ! -z $dns1 && echo -e "$dns1\t%nameserver\t#DNS 1" >> $HOSTS
test ! -z $dns2 && echo -e "$dns2\t%nameserver\t#DNS 2" >> $HOSTS
echo -e "\n$ip\t$hostname" >> $HOSTS
echo $hostname > $HOSTNAME
else
test "$cd" != "yes" && test -f "$RCNET" && mv "$RCNET" "$RCNET~" &&
test "$v" = 1 && echo "Moved $RCNET to $RCNET~ to use default settings"
test "$cd" != "yes" && test -f $HOSTS && mv $HOSTS "$HOSTS~" &&
test "$v" = 1 && echo "Backed up $HOSTS to $HOSTS~"
test -f "$HOSTS~" && grep -v "%nameserver" "$HOSTS~" > $HOSTS
fi
test "$cd" != "yes" && test "$v" = 1 && echo "
You might have to reboot for the changes to take effect."
exit 0