# Copyright (c) 2007-2008 Roy Marples # All rights reserved. Released under the 2-clause BSD license. macchanger_depend() { before macnet } _config_vars="$_config_vars mac" macchanger_pre_start() { # We don't change MAC addresses from background yesno ${IN_BACKGROUND} && return 0 local mac= opts= eval mac=\$mac_${IFVAR} [ -z "${mac}" ] && return 0 _exists true || return 1 ebegin "Changing MAC address of ${IFACE}" # The interface needs to be up for macchanger to work most of the time _down mac=$(echo "${mac}" | tr '[:upper:]' '[:lower:]') local hex="[0-9a-f][0-9a-f]" case "${mac}" in # specific mac-addr ${hex}:${hex}:${hex}:${hex}:${hex}:${hex}) # We don't need macchanger to change to a specific # mac address _set_mac_address "${mac}" if eend "$?"; then mac=$(_get_mac_address) eindent einfo "changed to ${mac}" eoutdent _up return 0 fi ;; # increment MAC address, default macchanger behavior increment) opts="${opts}";; # randomize just the ending bytes random-ending) opts="${opts} -e";; # keep the same kind of physical layer (eg fibre, copper) random-samekind) opts="${opts} -a";; # randomize to any known vendor of any physical layer type random-anykind) opts="${opts} -A";; # fully random bytes random-full|random) opts="${opts} -r";; # default case is just to pass on all the options *) opts="${opts} ${mac}";; esac if [ ! -x /sbin/macchanger ]; then eerror "For changing MAC addresses, emerge net-analyzer/macchanger" return 1 fi mac=$(/sbin/macchanger ${opts} "${IFACE}" \ | sed -n -e 's/^Faked MAC:.*\<\(..:..:..:..:..:..\)\>.*/\U\1/p' ) _up # Sometimes the interface needs to be up .... if [ -z "${mac}" ]; then mac=$(/sbin/macchanger ${opts} "${IFACE}" \ | sed -n -e 's/^Faked MAC:.*\<\(..:..:..:..:..:..\)\>.*/\U\1/p' ) fi if [ -z "${mac}" ]; then eend 1 "Failed to set MAC address" return 1 fi eend 0 eindent einfo "changed to" "${mac}" eoutdent return 0 }