From 5af58b45146ab5253ca964738f4e45287bf963d4 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Thu, 5 Apr 2007 11:18:42 +0000
Subject: Rewrite the core parts in C. We now provide librc so other programs
 can query runlevels, services and state without using bash. We also provide
 libeinfo so other programs can easily use our informational functions.

As such, we have dropped the requirement of using bash as the init script
shell. We now use /bin/sh and have strived to make the scripts as portable
as possible. Shells that work are bash and dash. busybox works provided
you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
should disable find too.
zsh and ksh do not work at this time.

Networking support is currently being re-vamped also as it was heavily bash
array based. As such, a new config format is available like so
config_eth0="1.2.3.4/24 5.6.7.8/16"
or like so
config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

We will still support the old bash array format provided that /bin/sh IS
a link it bash.

ChangeLog for baselayout-1 can be found in our SVN repo.
---
 net/macchanger.sh | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 net/macchanger.sh

(limited to 'net/macchanger.sh')

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 :
-- 
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