#!/bin/sh
# This checks IP address syntax.
# usage: syntax_check ADDRESS #-OF-EXPECTED-SEGMENTS (up to 4)
# example: syntax_check 123.22.43.1 4
# returns: 0=found correct  1=too many fields  2=non numeric field found
# Modified for DeLi Linux by Henry Jensen

I_AM=`whoami`
if [ "$I_AM" != "root" ]; then
  echo -e "This action requires root privileges.\n"
  exit 1
fi

TMP=/var/log/setup/tmp
if [ ! -d $TMP ]; then
 mkdir -p $TMP
 chmod 700 $TMP
fi
syntax_check_color() {
  RET_CODE=0 
  SCRATCH=$1
  SCRATCH=`echo $SCRATCH | tr "." "/"`
  INDEX=$2
  while [ ! "$INDEX" = "0" ]; do
    # OK, so I'm a LISP-head :^)
    FIELD=`basename $SCRATCH`
    SCRATCH=`dirname $SCRATCH`
    if expr $FIELD + 1 1> /dev/null 2> /dev/null; then
      GOOD=y
    else
      RET_CODE=2; # non-numeric field
    fi
    INDEX=`expr $INDEX - 1`
  done
  if [ ! "$SCRATCH" = "." ]; then
    RET_CODE=1; # too many arguments
  fi
  if [ "$3" = "WARN" -a ! "$RET_CODE" = "0" ]; then
    cat << EOF > $TMP/tempmsg

The address you have entered seems to be non-standard. We were expecting
$2 groups of numbers seperated by dots, like: 127.0.0.1
Are you absolutely sure you want to use the address $1?

EOF
    dialog --title "WARNING" --yesno "`cat $TMP/tempmsg`" 9 72
    if [ $? = 0 ]; then
      RET_CODE = 0;
    fi
    rm -r $TMP/tempmsg
  else
    if [ "$3" = "ECHO" ]; then
      echo $RET_CODE;
    fi
  fi
  return $RET_CODE;
}

if [ ! -d lost+found -a ! -d vmlinuz -a ! -d proc ]; then # cheap, but it works :^)
 cd /
fi;

# IMPORTANT!!! NO LEADING '/' in the paths below, or this script will not
# function from the bootdisk.
IFCONFIG=sbin/ifconfig			# Where ifconfig program is.
ROUTE=sbin/route			# Where route program is.
RC=etc/rc.d/net 			# Where rc.inet1 file is.
RESOLV=etc/resolv.conf			# Where resolv.conf file is.
HOSTS=etc/hosts			 	# Where hosts file is.
ETCNETWORKS=etc/networks		# Where networks file is.
DHCP=no                                 # Use DHCP, yes/no.
#
# defaults:
NETWORK=127.0.0.0
IPADDR=127.0.0.1
NETMASK=255.255.255.0
#
############################################################################
#			 Question and answer.
############################################################################
#
cat << EOF > $TMP/tempmsg

Now we will attempt to configure your network. This 
process probably won't work on all possible network 
configurations, but should give you a good start. You will be
able to reconfigure your system at any time by typing:
  
  netconfig

EOF
dialog --title "NETWORK CONFIGURATION" --msgbox "`cat $TMP/tempmsg`" 12 70
while [ 0 ]; do
cat << EOF > $TMP/tempmsg
First, we'll need the name you'd like to give your host. Only
the base hostname is needed right now. (not the domain)

Enter hostname:
EOF
 dialog --title "ENTER HOSTNAME" --inputbox "`cat $TMP/tempmsg`" 11 70 \
 $HOSTNM 2> $TMP/SeThost
 if [ $? = 1 -o $? = 255 ]; then
  rm -f $TMP/SeThost $TMP/tempmsg
  exit
 fi
 HOSTNM="`cat $TMP/SeThost`"
 rm -f $TMP/SeThost $TMP/tempmsg
 if [ ! "$HOSTNM" = "" ]; then
  break;
 fi
done

while [ 0 ]; do
cat << EOF > $TMP/tempmsg
Now, we need the domain name. Do not supply a leading '.'

Enter domain name for $HOSTNM: 
EOF
 dialog --title "ENTER DOMAINNAME FOR '$HOSTNM'" --inputbox \
"`cat $TMP/tempmsg`" \
10 70 $DOMAIN 2> $TMP/SeTdom
 if [ $? = 1 -o $? = 255 ]; then
  rm -f $TMP/SeTdom $TMP/tempmsg
  exit
 fi
 DOMAIN="`cat $TMP/SeTdom`"
 rm -f $TMP/SeTdom $TMP/tempmsg
 if [ ! "$DOMAIN" = "" ]; then
  break;
 fi
done

# echo $HOSTNM.$DOMAIN > etc/HOSTNAME

sed "s|HOSTNAME=.*|HOSTNAME=$HOSTNM|" /etc/rc.conf >/tmp/rc.conf.tmp
mv /tmp/rc.conf.tmp /etc/rc.conf

dialog --title "SETUP IP FOR '$HOSTNM.$DOMAIN'" --menu \
"Now we need to know how your machine connects to the network.  If you \
have an internal network card and an assigned IP address, gateway, \
and DNS, use the 'static IP' choice to enter these values.  If your IP \
address is assigned by a DHCP server (commonly used by cable modem and DSL \
services), select 'DHCP'.  If you do not have a network card, select \
the 'loopback' choice.  'loopback' is also the correct choice if your \
only connection to the network will be through a serial modem \
(with SLIP or PPP), or if you are using a laptop network card (these \
are configured in /etc/pcmcia/). What type of network connection \
best describes your machine?" 19 71 3 \
"static IP" "Use a static IP address to configure ethernet" \
"DHCP" "Use a DHCP server to configure ethernet" \
"loopback" "Set up a loopback connection (modem or no net)" 2> $TMP/reply
if [ $? = 1 -o $? = 255 ]; then
  rm -f $TMP/reply
  exit
fi
REPLY=`cat $TMP/reply`
rm -f $TMP/reply

if [ "$REPLY" = "DHCP" ]; then
  DHCP="yes"
elif [ "$REPLY" = "loopback" ]; then
  LOOPBACK="yes"
else
  LOOPBACK="no"
fi

if [ "$LOOPBACK" = "no" -a "$DHCP" = "no" ]; then

 while [ 0 ]; do
  if [ -r $TMP/SeTIP ]; then
   IPADDR=`cat $TMP/SeTIP`
  fi
  cat << EOF > $TMP/tempmsg
Enter your IP address for the local machine. Example: 
111.112.113.114
Enter IP address for $HOSTNM (aaa.bbb.ccc.ddd): 
EOF
  dialog --title "ENTER IP ADDRESS FOR '$HOSTNM.$DOMAIN'" --inputbox \
"`cat $TMP/tempmsg`" \
10 68 $IPADDR 2> $TMP/SeTlip
  if [ $? = 1 -o $? = 255 ]; then
   rm -f $TMP/SeTlip $TMP/tempmsg
   exit
  fi
  IPADDR="`cat $TMP/SeTlip`"
  rm -f $TMP/SeTlip $TMP/tempmsg
  if [ "$IPADDR" = "" ]; then
   continue;
  fi
  syntax_check_color $IPADDR 4 WARN
  if [ $? = 0 ]; then
   echo $IPADDR > $TMP/SeTIP
   break;
  fi
 done

 while [ 0 ]; do
  if [ -r $TMP/SeTnetmask ]; then
   NETMASK=`cat $TMP/SeTnetmask`
  fi
  cat << EOF > $TMP/tempmsg
Enter your netmask. This will generally look something
like this: 255.255.255.0
Enter netmask (aaa.bbb.ccc.ddd):
EOF
  dialog --title "ENTER NETMASK FOR LOCAL NETWORK" --inputbox \
"`cat $TMP/tempmsg`" \
10 65 $NETMASK 2> $TMP/SeTnmask
  if [ $? = 1 -o $? = 255 ]; then
   rm -f $TMP/SeTnmask $TMP/tempmsg
   exit
  fi
  NETMASK="`cat $TMP/SeTnmask`"
  rm -f $TMP/SeTnmask $TMP/tempmsg
  if [ "$NETMASK" = "" ]; then
   continue;
  fi
  syntax_check_color $NETMASK 4 WARN
  if [ $? = 0 ]; then
   echo $NETMASK > $TMP/SeTnetmask
   break;
  fi
 done
 
# Set broadcast/network addresses automatically:

 while [ 0 ]; do
  if [ -r $TMP/SeTgateway ]; then
   GATEWAY=`cat $TMP/SeTgateway`
  fi
  cat << EOF > $TMP/tempmsg
Enter the address for the gateway on your network,
such as `echo $IPADDR | cut -f 1-3 -d .`.1

If you don't have a gateway on your network (or if this machine
is the gateway, such as if you'll be using it with a modem link
to the outside network as a router, firewall, or for IP
masquerading for a LAN), just hit ENTER without entering a
gateway IP address.

Enter gateway address (aaa.bbb.ccc.ddd):
EOF
  dialog --title "ENTER GATEWAY ADDRESS" --inputbox "`cat $TMP/tempmsg`" \
  17 68 $GATEWAY 2> $TMP/SeTgate
  if [ $? = 1 -o $? = 255 ]; then
   rm -f $TMP/SeTgate $TMP/tempmsg
   exit
  fi
  GATEWAY="`cat $TMP/SeTgate`"
  rm -f $TMP/SeTgate $TMP/tempmsg
  if [ "$GATEWAY" = "" ]; then
    break;
  fi
  syntax_check_color $GATEWAY 4 WARN
  if [ $? = 0 ]; then
    echo $GATEWAY > $TMP/SeTgateway
    break;
  fi
 done

fi

#
############################################################################
#			  The rc.d/net file.
############################################################################
#
# echo "Creating /$RC..."
/bin/cat << ENDFILE > $RC
#!/bin/sh
# /etc/rc.d/net: start/stop network                                             
#                                                                               


# Edit these values to set up a static IP address:
IPADDR="$IPADDR"	# REPLACE with YOUR IP address!
GATEWAY="$GATEWAY"	# REPLACE with YOUR gateway address!
DHCP="$DHCP"            # Use DHCP ("yes" or "no")

case \$1 in                                                                      
start)                                                                          
/sbin/ifconfig lo 127.0.0.1
if [ "\$DHCP" = "yes" ]; then # use DHCP to set everything up:
  echo "Attempting to configure eth0 by contacting a DHCP server..."
  /sbin/dhcpcd
elif [ ! "\$IPADDR" = "127.0.0.1" ]; then # set up IP statically:
  # Set up the ethernet card:
  echo "Configuring eth0 as \${IPADDR}..."
  /sbin/ifconfig eth0 \${IPADDR} 
  # If there is a gateway defined, then set it up:
  if [ ! "\$GATEWAY" = "" ]; then
    /sbin/route add default gw \${GATEWAY} 
  fi
fi


	;;
stop)
        /sbin/ifconfig lo down
	if [ ! "\$IPADDR" = "127.0.0.1" ]; then
	 /sbin/ifconfig eth0 down
	fi
        ;;
restart)
	/etc/rc.d/net stop
	/etc/rc.d/net start
	;;

*)
	echo "usage: /etc/rc.d/net [start|stop|restart]"
	;;
esac                                                                            
									

# To use DHCP instead of a static IP, set this value to "yes":

# OK, time to set up the interface:

# End of /etc/rc.d/net
ENDFILE
chmod 755 $RC
#
############################################################################
#			  The networks file.
############################################################################
#
#echo "Creating /$ETCNETWORKS..."
/bin/cat <<EOF >$ETCNETWORKS
#
# networks	This file describes a number of netname-to-address
#		mappings for the TCP/IP subsystem.  It is mostly
#		used at boot time, when no name servers are running.
#

loopback	127.0.0.0

# End of networks.
EOF
chmod 644 $ETCNETWORKS
#
############################################################################
#			   The hosts file.
############################################################################
#
#echo "Creating /$HOSTS..."
/bin/cat << EOF > $HOSTS
#
# hosts		This file describes a number of hostname-to-address
#		mappings for the TCP/IP subsystem.  It is mostly
#		used at boot time, when no name servers are running.
#		On small systems, this file can be used instead of a
#		"named" name server.  Just add the names, addresses
#		and any aliases to this file...
#
# By the way, Arnt Gulbrandsen <agulbra@nvg.unit.no> says that 127.0.0.1
# should NEVER be named with the name of the machine.  It causes problems
# for some (stupid) programs, irc and reputedly talk. :^)
#

# For loopbacking.
127.0.0.1	localhost
$IPADDR	 	$HOSTNM.$DOMAIN $HOSTNM

# End of hosts.

EOF
chmod 644 $HOSTS
#
############################################################################
#			The resolv.conf file.
############################################################################
#
if [ "$LOOPBACK" = "no" ]; then
 dialog --title "USE A NAMESERVER?" --yesno "Will you be accessing a \
nameserver?" 5 50 
 if [ $? = 0 ]; then
  if [ "$GATEWAY" = "" ]; then
    DNSSAMPLE=`echo $IPADDR | cut -f 1-3 -d .`
  else
    DNSSAMPLE=$GATEWAY
  fi
  while [ "$NAMESERVER" = "" ]; do
   cat << EOF > $TMP/tempmsg
Here is your current IP address, full hostname, and base hostname:
$IPADDR       $HOSTNM.$DOMAIN    $HOSTNM

Please give the IP address of the name server to use,
such as $DNSSAMPLE.

You can add more Domain Name Servers by editing /$RESOLV.

Name Server for domain $DOMAIN (aaa.bbb.ccc.ddd): 
EOF
   dialog --title "SELECT NAMESERVER" --inputbox \
"`cat $TMP/tempmsg`" 16 72 2> $TMP/SeTns
   if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/tempmsg $TMP/SeTns 
    break
   fi
   NAMESERVER="`cat $TMP/SeTns`"
   rm -f $TMP/tempmsg $TMP/SeTns 
  done
  echo "search $DOMAIN" >$RESOLV
  echo "nameserver $NAMESERVER" >>$RESOLV
 else
  echo "search $DOMAIN" >$RESOLV
 fi
fi
if [ "$LOOPBACK" = "no" ]; then chmod 644 $RESOLV ;fi
#
############################################################################
#		     Change permissions and exit.
############################################################################
#

# Check for existing network driver:
if cat /proc/net/dev | fgrep eth0 1> /dev/null 2> /dev/null ; then
  # Skip probe by setting an empty cardfound file that will be ignored:
  touch /cardfound
fi

if [ -d lib/modules/`uname -r`/kernel/drivers/net \
     -a ! "$IPADDR" = "127.0.0.1" \
     -a ! -r /cardfound \
     -o "$DHCP" = "yes" ]; then
  dialog --title "PROBE FOR NETWORK CARD?" --menu "If you like, we \
can look to see what kind of network card you have in your machine, and \
if we find one create an /etc/rc.modules.d/net script to load the module \
for it at boot time.  There's a slight bit of danger that the probing \
can cause problems, but it almost always works.  If you'd rather configure \
your system manually, you can skip the probing process and edit \
/etc/rc.modules.d/net later to have it load the right module." \
15 68 2 \
"probe" "look for network cards to set up" \
"skip" "skip probe; edit /etc/rc.modules.d/net later" 2> $TMP/reply
  if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/reply
    exit
  fi
  REPLY=`cat $TMP/reply`
  rm -f $TMP/reply
  if [ ! "$REPLY" = "skip" ]; then
    for card in 8139too 3c59x de4x5 dgrs eepro100 epic100 hp100 lance \
      ne2k-pci olympic pcnet32 rcpci rtl8139 sktr tulip via-rhine \
      yellowfin sis900 r8169 ; do
      chroot . /sbin/modprobe $card 2> /dev/null
      if [ $? = 0 ]; then
        dialog --title "CARD DETECTED" --msgbox "A networking card using \
the $card.o module has been detected." 5 72
        echo "$card" > /cardfound
        break;
      fi
     done
     if [ ! -r /cardfound ]; then
       for card in depca ibmtr 3c501 3c503 3c505 3c507 3c509 3c515 ac3200 \
         acenic arlan at1700 com20020 com90io com90xx cosa cs89x0 de4x5 de600 \
         de620 e2100 eepro eexpress es3210 eth16i ewrk3 fmv18x hostess_sv11 \
         hp-plus hp lne390 ne3210 ni5010 ni52 ni65 sb1000 sealevel smc-ultra \
         smc-ultra32 smc9194 wd ; do
         chroot . /sbin/modprobe $card 2> /dev/null
         if [ $? = 0 ]; then
           dialog --title "CARD DETECTED" --msgbox "A networking card using \
the $card.o module has been detected." 5 72
           echo "$card" > /cardfound
           break
         fi
       done
     fi
     if [ ! -r /cardfound ]; then
       dialog --title "NO CARD DETECTED" --msgbox "Sorry, but no network \
card could be probed for on your system.  Some cards (like non-PCI NE2000s) \
must be supplied with the I/O address to use and can't be probed for safely. \
You'll have to try to configure the card later by editing \
/etc/rc.modules.d/net or recompiling your kernel." 9 70
     fi
  fi
fi

if [ -r /cardfound ]; then
  if [ ! "`cat /cardfound`" = "" ]; then
    cat << EOF > etc/rc.modules.d/net
# Load module for network device.
# This script is automatically generated by the netconfig

/sbin/modprobe `cat /cardfound`

EOF
    chmod 755 etc/rc.modules.d/net
  fi
fi

dialog --title "NETWORK SETUP COMPLETE" --msgbox "Your networking \
software has now been configured." 5 68
rm -f $TMP/tempmsg /cardfound
