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Diffstat (limited to 'net/macchanger.sh')
-rw-r--r-- | net/macchanger.sh | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/net/macchanger.sh b/net/macchanger.sh new file mode 100644 index 00000000..dce481c8 --- /dev/null +++ b/net/macchanger.sh @@ -0,0 +1,88 @@ +# Copyright 2004-2007 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +macchanger_depend() { + before macnet +} + +_config_vars="$_config_vars mac" + +macchanger_pre_start() { + # We don't change MAC addresses from background + ${IN_BACKGROUND} && return 0 + + local mac= opts= + + eval mac=\$mac_${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 "${mac}" | tr '[:upper:]' '[:lower:]') + case "${mac}" in + # specific mac-addr, i wish there were a shorter way to specify this + [0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]) + # 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 ${mac}" + eoutdent + return 0 + fi + ;; + + # increment MAC address, default macchanger behavior + increment) opts="${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 +} + +# vim: set ts=4 : |