source: MondoRescue/branches/3.1/mindi/rootfs/sbin/start-netfs@ 2937

#!/bin/sh
#
# $Id$
#
# This script sets up the network + Network FS environment if needed.
#


# number of ping
ipcount=3

# Get info from config file
ipdev=""
hwaddr=""
ipaddress=""
ipnetmask=""
ipbroadcast=""
ipgateway=""
proto=""
ipconf=""
pre=""
post=""
netfsmount=""
imgname=""
dirimg=""

# Get info from config file
if [ -f $MINDI_CACHE/mondorestore.cfg ]; then
    ipdev=`grep netfs-dev $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    hwaddr=`grep netfs-client-hwaddr $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    ipaddress=`grep netfs-client-ipaddr $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    ipnetmask=`grep netfs-client-netmask $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    ipbroadcast=`grep netfs-client-broadcast $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    ipgateway=`grep netfs-client-defgw $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    proto=`grep netfs-proto $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    export netfsmount=`grep netfs-server-mount $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    export imgname=`grep iso-prefix $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
    export dirimg=`grep netfs-server-path $MINDI_CACHE/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
fi

if [ "$imgname" = "" ]; then
    export imgname="mondorescue"
fi
if [ "$dirimg" = "" ]; then
    export dirimg="/"
fi

# info from cmdline are predominent
for i in `cat $CMDLINE` ; do
    echo $i | grep -qi ping= && ipcount=`echo $i | cut -d= -f2`
    echo $i | grep -qi hwaddr= && hwaddr=`echo $i | cut -d= -f2`
    echo $i | grep -qi ipconf= && ipconf=`echo $i | cut -d= -f2`
    echo $i | grep -qi netfsmount= && export netfsmount=`echo $i | cut -d= -f2`
    echo $i | grep -qi netfsopt= && export netfsopt=`echo $i | cut -d= -f2`
    echo $i | grep -qi prefix= && export imgname=`echo $i | cut -d= -f2`
    echo $i | grep -qi netfspath= && export dirimg=`echo $i | cut -d= -f2`
    echo $i | grep -qi pre= && pre=`echo $i | cut -d= -f2`
    echo $i | grep -qi post= && post=`echo $i | cut -d= -f2`
    echo $i | grep -qi proto= && proto=`echo $i | cut -d= -f2`
done

if [ "$ipdev" != "" ] || [ "$ipconf" != "" ]; then
    # Network configuration stored during archive
    # or on cmdline so network wanted => starting it
    LogIt "Starting Network..."

    # Activate loobback
    ifconfig lo 127.0.0.1

    echo "$ipconf" | grep -q "dhcp"
    if [ $? -eq 0 ]; then
        ipdev=`echo $ipconf | cut -d: -f1`
        dhc="/sbin/dhclient"
        if [ ! -x $dhc ]; then
            dhc="/sbin/dhcpcd"
            if [ ! -x $dhc ]; then
                dhc="/sbin/udhcpc"
                if [ ! -x $dhc ]; then
                    dhc=""
                else
                    dhc="$dhc -i"
                fi
            fi
        fi
        if [ -x $dhc ]; then
            LogIt "Making DHCP request on $ipdev with $dhc"
            $dhc $ipdev
        else
            LogIt "Unable to make a DHCP request on $ipdev - no client found"
        fi
    else
        if [ "$ipconf" != "" ]; then
            ipdev=`echo $ipconf | cut -d: -f1`
            ipaddress=`echo $ipconf | cut -d: -f2`
            ipnetmask=`echo $ipconf | cut -d: -f3`
            ipbroadcast=`echo $ipconf | cut -d: -f4`
            ipgateway=`echo $ipconf | cut -d: -f5`
        fi

        # If same system, map to the right MAC address
        hwaddr_found=`ifconfig $ipdev | /bin/grep HWaddr | awk '{print $NF}'`
        if [ "$hwaddr" != "$hwaddr_found" ]; then
            ipdev_new=`ifconfig -a | /bin/grep $hwaddr | awk '{print $1}'`
            if [ "$ipdev_new" != "" ]; then
                LogIt "Interface $ipdev changed to $ipdev_new (MAC: $hwaddr)"
                ipdev=$ipdev_new
            else
                LogIt "NOTE: Interface $ipdev kept despite it doesn't match the $hwaddr MAC address"
            fi
        fi

        LogIt "Configuring $ipdev statically ($ipaddress/$ipnetmask)"
        ifconfig $ipdev $ipaddress netmask $ipnetmask broadcast $ipbroadcast
        route add default gw $ipgateway

    fi

    # Leave time to the satck to wake up (reported by some users)
    sleep 5

    # ping server helps waking interface up
    netfs_server_ipaddr=`echo $netfsmount | cut -d: -f1 | cut -d@ -f2`
    if [ $netfs_server_ipaddr != "" ]; then
        LogIt "Pinging Remote server $netfs_server_ipaddr ($ipcount times)..."
        ping -c $ipcount $netfs_server_ipaddr 
    fi

    # Which is our protocol for file sharing
    if [ "$proto" = "" ]; then
        LogIt "No protocol specified, defaulting to NFS"
        proto="nfs"
    fi

    if [ "$netfsmount" != "" ]; then
        if [ "$proto" = "sshfs" ]; then
            LogIt "Mounting SSHFS share ($netfsmount) on /tmp/isodir..."
            # We need a correct console for ssh
            ln -sf /dev/console /dev/tty
            sshfs -o ro,StrictHostKeyChecking=no $netfsopt $netfsmount /tmp/isodir
        elif [ "$proto" != "" ]; then
            LogIt "Mounting Network share ($netfsmount) on /tmp/isodir..."
            touch /etc/mtab
            mount -t $proto -o nolock,ro $netfsopt $netfsmount /tmp/isodir
        else
            LogIt "Unknown protocol $proto"
        fi

        # In all these cases we should have an image
        LogIt "Mounting Remote image ${imgname}-1.iso in $dirimg on /mnt/cdrom in loopback"
        mount -o ro,loop -t iso9660 /tmp/isodir/$dirimg/${imgname}-1.iso /mnt/cdrom
    else
        LogIt "No image to mount"
    fi
    
    # Save the scripts on the Network share locally
    if [ "`echo $pre | grep -E '^/tmp/isodir'`" ]; then
        cp $pre /tmp
        LogIt "Copying $pre under /tmp"
    fi
    if [ "`echo $post | grep -E '^/tmp/isodir'`" ]; then
        cp $post /tmp
        LogIt "Copying $post under /tmp"
    fi
fi