#!/bin/sh
# This script will be called with the single argument of "boot" during the
# system startup, to allow for unattended network configuration.
# For this to work, all required information must be passed on the commandline.
# Two parameters, 'kbd=' and 'nic=' must be used to supply this information.
# kbd=<keyboard_layout>
# nic=<driver>:<interface>:<dhcp|static>[:ipaddr:netmask[:gateway]]
TMP=/var/log/setup/tmp
T_PX="$(cat $TMP/SeTT_PX 2> /dev/null)"
if [ ! -d $TMP ]; then
mkdir -p $TMP
fi
# Terminate the script now if we have an interface with an IP address:
# Running the script is not needed anymore in that case.
if `ip -f inet -o addr show | grep -v " lo " 1>/dev/null 2>/dev/null` ; then
exit 0
fi
# Function to convert the netmask from CIDR format to dot notation.
cidr_cvt() {
inform=$1
if [ $inform -ge 32 ]; then outform='255.255.255.255'
elif [ $inform -ge 31 ]; then outform='255.255.255.254'
elif [ $inform -ge 30 ]; then outform='255.255.255.252'
elif [ $inform -ge 29 ]; then outform='255.255.255.248'
elif [ $inform -ge 28 ]; then outform='255.255.255.240'
elif [ $inform -ge 27 ]; then outform='255.255.255.224'
elif [ $inform -ge 26 ]; then outform='255.255.255.192'
elif [ $inform -ge 25 ]; then outform='255.255.255.128'
elif [ $inform -ge 24 ]; then outform='255.255.255.0'
elif [ $inform -ge 23 ]; then outform='255.255.254.0'
elif [ $inform -ge 22 ]; then outform='255.255.252.0'
elif [ $inform -ge 21 ]; then outform='255.255.248.0'
elif [ $inform -ge 20 ]; then outform='255.255.240.0'
elif [ $inform -ge 19 ]; then outform='255.255.224.0'
elif [ $inform -ge 18 ]; then outform='255.255.192.0'
elif [ $inform -ge 17 ]; then outform='255.255.128.0'
elif [ $inform -ge 16 ]; then outform='255.255.0.0'
elif [ $inform -ge 15 ]; then outform='255.254.0.0'
elif [ $inform -ge 14 ]; then outform='255.252.0.0'
elif [ $inform -ge 13 ]; then outform='255.248.0.0'
elif [ $inform -ge 12 ]; then outform='255.240.0.0'
elif [ $inform -ge 11 ]; then outform='255.224.0.0'
elif [ $inform -ge 10 ]; then outform='255.192.0.0'
elif [ $inform -ge 9 ]; then outform='255.128.0.0'
elif [ $inform -ge 8 ]; then outform='255.0.0.0'
elif [ $inform -ge 7 ]; then outform='254.0.0.0'
elif [ $inform -ge 6 ]; then outform='252.0.0.0'
elif [ $inform -ge 5 ]; then outform='248.0.0.0'
elif [ $inform -ge 4 ]; then outform='240.0.0.0'
elif [ $inform -ge 3 ]; then outform='224.0.0.0'
elif [ $inform -ge 2 ]; then outform='192.0.0.0'
elif [ $inform -ge 1 ]; then outform='128.0.0.0'
elif [ $inform -ge 0 ]; then outform='0.0.0.0'
fi
echo $outform
}
# First, sane defaults:
INTERFACE=""
ENET_MODE="ask"
# Does the commandline have NIC information for us?
# Format is 'nic=driver:interface:<dhcp|static>:ip:mask:gw'
for CMDELEM in $(cat /proc/cmdline) ; do
if $(echo $CMDELEM | grep -q "^nic=") ; then
DRIVER=$(echo $CMDELEM | cut -f2 -d=)
INTERFACE=$(echo $DRIVER | cut -f2 -d:)
ENET_MODE=$(echo $DRIVER | cut -f3 -d:)
if [ "$ENET_MODE" = "static" ]; then
IPADDR=$(echo $DRIVER | cut -f4 -d:)
NETMASK=$(echo $DRIVER | cut -f5 -d:)
# We allow for CIDR notation of the netmask (0 < NETMASK < 25):
if [ "$(echo $NETMASK | tr -cd '\.')" != "..." ]; then
NETMASK=$(cidr_cvt $NETMASK)
fi
GATEWAY=$(echo $DRIVER | cut -f6 -d:)
fi
DRIVER=$(echo $DRIVER | cut -f1 -d:)
break
fi
done
# If the script has an argument of 'boot' then we require all information for
# unattended network setup or else we silently exit.
if [ "$1" = "boot" ]; then
if [ "x$DRIVER" = "x" -o "x$INTERFACE" = "x" -o "$ENET_MODE" = "ask" ]; then
exit 2
elif [ "$ENET_MODE" = "static" ] && [ "x$IPADDR" = "x" -o "x$NETMASK" = "x" ]; then
exit 2
fi
fi
# If the cmdline provided the name of a driver, load it;
# Alternatively check if the user ran "network" before running "setup";
# We need an interface:
if [ `cat /proc/net/dev | grep ':' | sed -e "s/^ *//" | cut -f1 -d: | grep -v lo | wc -l` = 0 ]; then
if [ "x${DRIVER}" != "x" ]; then
# This takes silent care of 'DRIVER=auto' as well...
modprobe ${DRIVER} 1>/dev/null 2>/dev/null
else
while [ 0 ]; do
cat << EOF > $TMP/tempmsg
You will now get a chance to probe your network interfaces.
EOF
dialog --title "PROBING NETWORK DEVICES" --msgbox "`cat $TMP/tempmsg`" 7 68
clear
rm -f $TMP/tempmsg
/bin/network --installer
read -p "Press any key..." JUNK
sleep 5 # Give dhcpcd a change to probe
unset JUNK
cat << EOF > $TMP/tempmsg
Are you OK with the network interface which was detected?
If not, select 'No' to get back to the network probe program.
You can try to load another driver explicitly,
by using "P <driver_name>".
If you are satisfied, select 'Yes' to continue with network configuration.
EOF
dialog --title "PROBING NETWORK DEVICES" --yesno "`cat $TMP/tempmsg`" 12 68
if [ $? = 0 ]; then
rm -f $TMP/tempmsg
break
fi
clear
done
fi
fi
# If we obtained information from a DHCP server, use it:
if [ "x$INTERFACE" = "x" -o "$INTERFACE" = "auto" ]; then
# the cmdline did not provide a nic or it's "auto" to let dhcpcd find out:
if [ "$INTERFACE" = "auto" ]; then
# hope that 3 seconds is enough for dhcpcd;
# if not then you had better specify the INTERFACE in the nic= parameter...
dialog --title "INITIALIZING NETWORK" --infobox \
"\nWaiting a few seconds for DHCP polling to settle ..." 5 56
sleep 3
fi
clear
for I_I in \
$(cat /proc/net/dev | grep ':' | sed -e "s/^ *//" | cut -f1 -d: | grep -v lo) ;
do
if [ -s /etc/dhcpc/dhcpcd-${I_I}.info ]; then
INTERFACE="${I_I}"
break
fi
done
unset I_I
if [ "$INTERFACE" = "auto" ]; then # failed to find a configured interface
INTERFACE=""
fi
fi
while [ 0 ]; do
T_PX="$(cat $TMP/SeTT_PX 2> /dev/null)"
UPNRUN=1
if [ "$T_PX" = "/" ]; then
cat << EOF > $TMP/tempmsg
You're running off the hard drive filesystem. Is this machine
currently running on the network you plan to install from? If
so, we won't try to reconfigure your ethernet card.
Are you up-and-running on the network?
EOF
dialog --title "NETWORK CONFIGURATION" --yesno "`cat $TMP/tempmsg`" 12 68
UPNRUN=$?
clear
fi
if [ $UPNRUN = 1 ]; then
ENET_DEVICE=${INTERFACE:-"eth0"}
if [ "x$INTERFACE" != "x" ]; then # interface specified via cmdline or dhcpcd
if [ "$ENET_MODE" = "ask" ]; then
# Offer to install using DHCP:
cat << EOF > $TMP/tempmsg
I can configure your network interface $ENET_DEVICE
fully automatically using DHCP.
If you want this, please select 'yes'.
If you select 'no' instead, then you will be able to assign
the IP address, netmask and gateway manually.
EOF
dialog --title "DHCP CONFIGURATION" --yesno "`cat $TMP/tempmsg`" 12 65
if [ $? -eq 0 ]; then
rm -f $TMP/tempmsg
echo $ENET_DEVICE > $TMP/SeTdhcp
else
rm -f $TMP/SeTdhcp
fi
elif [ "$ENET_MODE" = "dhcp" ]; then # Don't ask, just use DHCP
echo $ENET_DEVICE > $TMP/SeTdhcp
fi
fi # End non-empty INTERFACE
clear
if [ ! -r $TMP/SeTdhcp ]; then
# No DHCP configured, so use static IP.
# If we have all the values ready, don't ask any.
# Only if the script runs with the "boot" parameter will we silently accept
# an empty gateway address (if we came this far, we will have IP/netmask):
if [ "$1" = "boot" -a "x$GATEWAY" = "x" ]; then
HAVE_GATEWAY=1
GATEWAY="unspec"
else
HAVE_GATEWAY=0
fi
if [ "x$IPADDR" = "x" -o "x$NETMASK" = "x" -o "x$GATEWAY" = "x" ]; then
cat << EOF > $TMP/tempmsg
You will need to enter the IP address you wish to
assign to this machine. Example: 111.112.113.114
What is your IP address?
EOF
if [ "$LOCAL_IPADDR" = "" ]; then # assign default
LOCAL_IPADDR=${IPADDR}
fi
dialog --title "ASSIGN IP ADDRESS" --inputbox "`cat $TMP/tempmsg`" 12 \
65 $LOCAL_IPADDR 2> $TMP/local
if [ ! $? = 0 ]; then
rm -f $TMP/tempmsg $TMP/local
exit
fi
LOCAL_IPADDR="`cat $TMP/local`"
rm -f $TMP/local
clear
cat << EOF > $TMP/tempmsg
Now we need to know your netmask.
Typically this will be 255.255.255.0
but this can be different depending on
your local setup.
What is your netmask?
EOF
if [ "$LOCAL_NETMASK" = "" ]; then # assign default
LOCAL_NETMASK=${NETMASK:-255.255.255.0}
fi
dialog --title "ASSIGN NETMASK" --inputbox "`cat $TMP/tempmsg`" 14 \
65 $LOCAL_NETMASK 2> $TMP/mask
if [ ! $? = 0 ]; then
rm -f $TMP/tempmsg $TMP/mask
exit
fi
clear
LOCAL_NETMASK="`cat $TMP/mask`"
rm $TMP/mask
dialog --yesno "Do you have a gateway?" 5 30
HAVE_GATEWAY=$?
clear
if [ "$HAVE_GATEWAY" = "0" ]; then
if [ "$LOCAL_GATEWAY" = "" ]; then
if [ "$GATEWAY" = "" ]; then
LOCAL_GATEWAY="`echo $LOCAL_IPADDR | cut -f1-3 -d '.'`."
else
LOCAL_GATEWAY=${GATEWAY}
fi
fi
dialog --title "ASSIGN GATEWAY ADDRESS" --inputbox \
"\nWhat is the IP address for your gateway?" 9 65 \
$LOCAL_GATEWAY 2> $TMP/gw
if [ ! $? = 0 ]; then
rm -f $TMP/tempmsg $TMP/gw
exit
fi
LOCAL_GATEWAY="`cat $TMP/gw`"
rm -f $TMP/gw
fi
clear
else
# Non-interactive run, so we use the values set on the commandline:
LOCAL_IPADDR=${IPADDR}
LOCAL_NETMASK=${NETMASK}
LOCAL_GATEWAY=${GATEWAY}
fi # end questions asked
fi # end static ip
if [ "$ENET_MODE" = "ask" -a ! -r $TMP/SeTdhcp ]; then
cat << EOF > $TMP/tempmsg
This is the proposed network configuration for $ENET_DEVICE -
If this is OK, then select 'Yes'.
If this is not OK and you want to configure again, select 'No'.
* IP Address: $LOCAL_IPADDR
* Netmask: $LOCAL_NETMASK
EOF
if [ "$HAVE_GATEWAY" = 0 ]; then
echo "* Gateway: $LOCAL_GATEWAY" >> $TMP/tempmsg
fi
echo "" >> $TMP/tempmsg
dialog --no-collapse --title "NETWORK CONFIGURATION" --yesno "`cat $TMP/tempmsg`" 14 68
if [ $? -eq 1 ]; then
continue # New round of questions
fi
fi # end ask approval for ip config
#echo "Configuring ethernet card..."
dialog --title "INITIALIZING NETWORK" --infobox \
"\nConfiguring your network interface $ENET_DEVICE ..." 5 56
if [ -r $TMP/SeTdhcp ]; then
dhcpcd -k $ENET_DEVICE 1>/dev/null 2>&1 # Or else the '-T' will be used next:
sleep 3
dhcpcd -L $ENET_DEVICE
else
dhcpcd -k $ENET_DEVICE 1>/dev/null 2>&1 # We don't need it now
# Broadcast and network are derived from IP and netmask:
LOCAL_BROADCAST=`ipmask $LOCAL_NETMASK $LOCAL_IPADDR | cut -f 1 -d ' '`
LOCAL_NETWORK=`ipmask $LOCAL_NETMASK $LOCAL_IPADDR | cut -f 2 -d ' '`
ifconfig $ENET_DEVICE $LOCAL_IPADDR netmask $LOCAL_NETMASK broadcast $LOCAL_BROADCAST
if [ "$HAVE_GATEWAY" = "0" ]; then
#echo "Configuring your gateway..."
route add default gw $LOCAL_GATEWAY metric 1
fi
echo $LOCAL_IPADDR > $TMP/SeTIP
echo $LOCAL_NETMASK > $TMP/SeTnetmask
echo $LOCAL_GATEWAY > $TMP/SeTgateway
fi
fi # ! UPNRUN
clear
break
done
echo $UPNRUN > $TMP/SeTupnrun
# Basic initialisation completed. Let's see what the commandline has for us:
# If we know of a remote configuration file, get it now:
# Provide comma-separated values (protocol,remoteserver[:portnumber],configfile)
# like this example: 'cf=tftp,192.168.0.22,/slackware-12.1/configs/t43.cfg'
for CMDELEM in $(cat /proc/cmdline) ; do
if $(echo $CMDELEM | grep -q "^cf=") ; then
CONFIGFILE=$(echo $CMDELEM | cut -f2 -d=)
PROTO=$(echo $CONFIGFILE | cut -f1 -d,)
DLSERVER=$(echo $CONFIGFILE | cut -f2 -d,)
CONFIGFILE=$(echo $CONFIGFILE | cut -f3 -d,)
dialog --title "FETCHING CONFIGURATION" --infobox \
"\nAttempting to fetch a remote configuration file using $PROTO ..." 54 56
fi
done
if [ -n "$CONFIGFILE" ]; then
if [ "$PROTO" = "tftp" ]; then
tftp -g -r $CONFIGFILE -l $TMP/Punattended $DLSERVER 1>/dev/null 2>&1
elif [ "$PROTO" = "ftp" -o "$PROTO" = "http" ]; then
wget -q -P $TMP -O Punattended ${PROTO}://${DLSERVER}${CONFIGFILE}
fi
fi
# Clear the screen, since it looks pretty messy due to some fun with the termcap
# over a serial console.
clear
