source: MondoRescue/branches/3.2/mindi/rootfs/usr/sbin/start-netfs@ 3444

#!/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=`grep netfs-dev /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
# MAC address in uppercases
hwaddr=`grep netfs-client-hwaddr /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2- | tr '[a-z]' '[A-Z]'`
ipaddress=`grep netfs-client-ipaddr /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
ipnetmask=`grep netfs-client-netmask /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
ipbroadcast=`grep netfs-client-broadcast /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
ipgateway=`grep netfs-client-defgw /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
proto=`grep netfs-proto /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
iproute=`grep netfs-route /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
ipconf=""
ipmode="STATIC"
pre=""
post=""
export netfsmount=`grep netfs-server-mount /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
export imgname=`grep iso-prefix /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
if [ "$imgname" = "" ]; then
    export imgname="mondorescue"
fi
export dirimg=`grep iso-dir /tmp/mondorestore.cfg 2> /dev/null | cut -d' ' -f2-`
if [ "$dirimg" = "" ]; then
    export dirimg="/"
fi

# info from cmdline are predominent
for i in `cat /proc/cmdline` ; do
    echo $i | grep -qi ping= && ipcount=`echo $i | cut -d= -f2`
    echo $i | grep -qi hwaddr= && hwaddr=`echo $i | cut -d= -f2  | tr '[a-z]' '[A-Z]'`
    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`
    echo $i | grep -qi iproute= && iproute=`echo $i | cut -d= -f2`
    echo $i | grep -qi ipmode= && ipmode=`echo $i | cut -d= -f2`
done

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

    # Activate loobback
    ifconfig lo 127.0.0.1

    # ipconf has priority
    if [ "$ipconf" != "" ]; then
        echo "$ipconf" | grep -q "dhcp"
        if [ $? -eq 0 ]; then
            ipdev=`echo $ipconf | cut -d: -f1`
            ipmode="DHCP"
        else
            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
    else
        # Now relying on ipdev which isn't empty
        # ipmode is either STATIC by default or DHCP if a parameter was passed
        # If same system, map to the right MAC address

        # Look at our previous device
        hwaddr_found=`ifconfig $ipdev 2> /dev/null | grep HWaddr | awk '{print $NF}' | tr '[a-z]' '[A-Z]'`
        if [ "$hwaddr_found" != "" ]; then
            # That device always exists
            if [ "$hwaddr" = "$hwaddr_found" ]; then
                # No renaming took place use it
                LogIt "INFO: Using device $ipdev (Mac Addr: $hwaddr_found)"
            fi
        else
            # maybe there was a change of NIC numbering e.g. 
            # and the one used at backup doesn't exist anymore
            # ipdev is not good anymore probably
            oldipdev=$ipdev

            for hwdev in `ifconfig -a | grep HWaddr | awk '{print $1}'` ; do
                mac=`ifconfig $hwdev | grep HWaddr | awk '{print $NF}' | tr '[a-z]' '[A-Z]'`
                if [ "$hwaddr" = "$mac" ]; then
                    # This is the new device for the MAC address of our card at backup time
                    LogIt "INFO: Interface with MAC address $hwaddr changed from $ipdev to $hwdev"
                    LogIt "INFO: Using $hwdev for network configuration from now on"
                    ipdev=$hwdev
                    break
                fi
            done

            if [ "$oldipdev" = "$ipdev" ]; then
                # We didn't find a new device for this MAC
                LogIt "WARN: Interface $ipdev kept despite it doesn't match the $hwaddr MAC address"
                ipdev=$oldipdev
            fi

            # TODO: Should we do that ?
            if [ "$hwaddr" = "" ]; then
                # No hwaddr stored at backup
                # take the first interface and hope it's good
                ipdev=`ifconfig -a | grep HWaddr | awk '{print $1}' | head -1`
            fi
        fi
    fi

    if [ "$ipmode" = "DHCP" ]; then
        LogIt "INFO: Making DHCP request on $ipdev"
        udhcpc -i $ipdev
    else
        LogIt "INFO: Configuring $ipdev statically ($ipaddress/$ipnetmask/$ipgateway)"
        ifconfig $ipdev $ipaddress netmask $ipnetmask broadcast $ipbroadcast
        route add default gw $ipgateway
    fi
    # Leave time to the stack to wake up (reported by some users)
    sleep 5

    # Handle a potential static route
    if [ _"$iproute" != _"" ]; then
        iproute=`echo $iproute | sed -i 's/:/ /g'`
        LogIt "INFO: Adding static route with route add $iproute"
        route add $iproute
    fi

    # ping server helps waking interface up
    LogIt "INFO: Pinging Remote server..."
    netfs_server_ipaddr=`echo $netfsmount | cut -d: -f1 | cut -d@ -f2`
    ping -c $ipcount $netfs_server_ipaddr 

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

    if [ "$proto" = "sshfs" ]; then
        LogIt "INFO: Mounting SSHFS share ($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" = "smbfs" ]; then
        LogIt "INFO: Mounting SMBFS share ($netfsmount) on /tmp/isodir..."
        mount -t cifs $netfsmount /tmp/isodir -o ro $netfsopt 
    elif [ "$proto" != "" ]; then
        if [ -x /sbin/rpcbind ]; then
            echo "Starting rpcbind daemon..."
            /sbin/rpcbind -w &
        fi
        LogIt "INFO: Mounting Network share ($netfsmount) on /tmp/isodir..."
        touch /etc/mtab
        mount -t $proto -o nolock,ro $netfsopt $netfsmount /tmp/isodir
    else
        LogIt "ERROR: Unknown protocol $proto"
    fi
    
    LogIt "INFO: 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

    # Save the scripts on the Network share locally
    if [ "`echo $pre | grep -E '^/tmp/isodir'`" ]; then
        cp $pre /tmp
        LogIt "INFO: Copying $pre under /tmp"
    fi
    if [ "`echo $post | grep -E '^/tmp/isodir'`" ]; then
        cp $post /tmp
        LogIt "INFO: Copying $post under /tmp"
    fi
fi