core-agent-linux/network/setup-ip

#!/bin/sh

# Source Qubes library.
# shellcheck disable=SC1091
. /usr/lib/qubes/init/functions

have_qubesdb || exit 0

ip=$(/usr/bin/qubesdb-read /qubes-ip 2> /dev/null)
if [ "x$ip" != x ]; then
    #netmask=$(/usr/bin/qubesdb-read /qubes-netmask)
    gateway=$(/usr/bin/qubesdb-read /qubes-gateway)
    primary_dns=$(/usr/bin/qubesdb-read /qubes-primary-dns 2>/dev/null || echo "$gateway")
    secondary_dns=$(/usr/bin/qubesdb-read /qubes-secondary-dns)
    /sbin/ethtool -K "$INTERFACE" sg off
    /sbin/ethtool -K "$INTERFACE" tx off
    # If NetworkManager is enabled, let it configure the network
    if qsvc network-manager ; then
        nm_config=/etc/NetworkManager/system-connections/qubes-uplink-$INTERFACE
        cat > "$nm_config" <<__EOF__
[802-3-ethernet]
duplex=full

[ethernet]
mac-address=$(ip l show dev "$INTERFACE" |grep link|awk '{print $2}')

[connection]
id=VM uplink $INTERFACE
uuid=de85f79b-8c3d-405f-a652-cb4c10b4f9ef
type=802-3-ethernet

[ipv6]
method=ignore

[ipv4]
method=manual
may-fail=false
__EOF__
        if ! qsvc disable-dns-server ; then
            echo "dns=$primary_dns;$secondary_dns" >> "$nm_config"
        fi
        if ! qsvc disable-default-route ; then
            echo "addresses1=$ip;32;$gateway" >> "$nm_config"
        else
            echo "addresses1=$ip;32" >> "$nm_config"
        fi
        chmod 600 "$nm_config"
        # reload connection
        nmcli connection load "$nm_config" || :
    else
        # No NetworkManager enabled, configure the network manually
        /sbin/ifconfig "$INTERFACE" "$ip" netmask 255.255.255.255
        /sbin/ifconfig "$INTERFACE" up
        /sbin/route add -host "$gateway" dev "$INTERFACE"
        if ! qsvc disable-default-route ; then
            /sbin/route add default gw "$gateway"
        fi
        if ! is_protected_file /etc/resolv.conf ; then
            echo > /etc/resolv.conf
            if ! qsvc disable-dns-server ; then
                echo "nameserver $primary_dns" > /etc/resolv.conf
                echo "nameserver $secondary_dns" >> /etc/resolv.conf
            fi
        fi
    fi
    network=$(qubesdb-read /qubes-netvm-network 2>/dev/null)
    if [ "x$network" != "x" ] && ! qsvc disable-dns-server ; then
        gateway=$(qubesdb-read /qubes-netvm-gateway)
        #netmask=$(qubesdb-read /qubes-netvm-netmask)
        primary_dns=$(qubesdb-read /qubes-netvm-primary-dns 2>/dev/null || echo "$gateway")
        secondary_dns=$(qubesdb-read /qubes-netvm-secondary-dns)
        echo "NS1=$primary_dns" > /var/run/qubes/qubes-ns
        echo "NS2=$secondary_dns" >> /var/run/qubes/qubes-ns
        /usr/lib/qubes/qubes-setup-dnat-to-ns
    fi
    if [ "x$network" != "x" ]; then
        if [ -x /rw/config/qubes-ip-change-hook ]; then
            /rw/config/qubes-ip-change-hook
        fi
        # XXX: Backward compatibility
        if [ -x /rw/config/qubes_ip_change_hook ]; then
            /rw/config/qubes_ip_change_hook
        fi
    fi
fi