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