Split netconfig into three parts:

- netconfig - what auto will call which in turn will check for
  IPv4 and IPv6 to be available and ask the user to configure it
  by calling
- netconfig_ipv4 doing DHCP and static IPv4 addresses, and
- netconfig_ipv6 doing rtsol and static IPv6 addresses,
and then checking, querying and updating resolv.conf upon return.
Both DHCP and rtsol (in the future) might update resolv.conf already so
we seed ourselves from that file if available.

Reviewed by:	nwhitehorn
Sponsored by:	The FreeBSD Foundation
Sponsored by:	iXsystems

1 files changed, 149 insertions, 0 deletions

diff --git a/usr.sbin/bsdinstall/scripts/netconfig_ipv6 b/usr.sbin/bsdinstall/scripts/netconfig_ipv6
new file mode 100755
index 0000000..315a837
--- /dev/null
+++ b/usr.sbin/bsdinstall/scripts/netconfig_ipv6
@@ -0,0 +1,149 @@
+#!/bin/sh
+#-
+# Copyright (c) 2011 Nathan Whitehorn
+# All rights reserved.
+# Copyright (c) 2011 The FreeBSD Foundation
+# All rights reserved.
+#
+# Portions of this software were developed by Bjoern Zeeb
+# under sponsorship from the FreeBSD Foundation.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+
+#
+# TODO: 
+# - Add -R /sbin/resolvconf to rtsol once support is in tree.
+# - Add DHCPv6 support once FreeBSD ships with it.
+# 
+
+: ${DIALOG_OK=0}
+: ${DIALOG_CANCEL=1}
+: ${DIALOG_HELP=2}
+: ${DIALOG_EXTRA=3}
+: ${DIALOG_ITEM_HELP=4}
+: ${DIALOG_ESC=255}
+
+INTERFACE=$1
+case "${INTERFACE}" in
+"")	dialog --backtitle 'FreeBSD Installer' --title 'Network Configuration' \
+	    --msgbox 'No interface specified for IPv6 configuration.' 0 0
+	exit 1
+	;;
+esac
+
+AGAIN=""
+while : ; do
+	MSG="Would you like to try stateless address autoconfiguration (SLAAC)${AGAIN}?"
+	dialog --backtitle 'FreeBSD Installer' --title 'Network Configuration' \
+	    --yesno "${MSG}" 0 0
+	if [ $? -eq $DIALOG_OK ]; then
+		if [ ! -z $BSDINSTALL_CONFIGCURRENT ]; then
+			dialog --backtitle 'FreeBSD Installer' \
+			    --infobox "Sending Router Solicitation ..." 0 0
+			ifconfig ${INTERFACE} inet6 accept_rtadv up
+			rtsol -F $INTERFACE 2>> $BSDINSTALL_LOG
+			if [ $? -ne 0 ]; then
+				dialog --backtitle 'FreeBSD Installer' --msgbox "SLAAC failed." 0 0
+				AGAIN=" again"
+				continue
+			fi
+		fi
+		echo ifconfig_${INTERFACE}_ipv6=\"accept_rtadv\" >> $BSDINSTALL_TMPETC/rc.conf.net
+		exit 0
+	else
+		break
+	fi
+done
+
+ROUTER6=`netstat -Wrn -f inet6 | awk '/default/ {printf("%s\n", $2);}'`
+ADDRS=`ifconfig ${INTERFACE} inet6 | \
+awk  -v dfr="${ROUTER6}" '
+BEGIN {
+	n=0;
+}
+{
+	if (/inet6/) {
+		if (match($2, "^fe80:")) { next; };
+		# For the moment ignore all but the first address; it might confuse the user.
+		if (n > 0) { next; };
+		n++;
+		printf "\"IPv6 Address\" %d 0 \"%s/%s\" %d 16 50 0 0 ", n, $2, $4, n;
+	}
+}
+END {
+	if (n == 0) {
+		n++;
+		printf "\"IPv6 Address\" %d 0 \"\" %d 16 50 0 0 ", n, n;
+	}
+	n++;
+	# Nasty trick adding a (hidden, same y) read-only field as a marker
+	# to separate interface address(es) from the default router.
+	printf "\"Default Router\" %d 0 \"%s\" %d 16 50 0 2 ", n, "DefaultRouter", n;
+	printf "\"Default Router\" %d 0 \"%s\" %d 16 50 0 0 ", n, dfr, n;
+}'`
+
+exec 3>&1
+IF_CONFIG=$(echo ${ADDRS} | xargs dialog --backtitle 'FreeBSD Installer' \
+	--title 'Network Configuration' \
+	--mixedform 'Static IPv6 Network Interface Configuration' 0 0 0 \
+2>&1 1>&3)
+if [ $? -eq $DIALOG_CANCEL ]; then exit 1; fi
+exec 3>&-
+
+echo ${IF_CONFIG} | tr ' ' '\n' | \
+awk -v iface="${INTERFACE}" '
+BEGIN {
+	dfr=0;
+	count=0;
+}
+{
+	if (/^[[:space:]]+$/) {
+		next;
+	}
+	if (/DefaultRouter/) {
+		dfr=1;
+		next;
+	}
+	if (dfr == 1) {
+		printf("ipv6_defaultrouter=\"%s\"\n", $1);
+		next;
+	}
+	if (count > 0) {
+		# Ignore all but the first IP address for now.
+		next;
+	}
+	count++;
+	if (!match($1, "/")) {
+		sub("$", "/64", $1);
+	}
+	printf("ifconfig_%s_ipv6=\"inet6 %s\"\n", iface, $1);
+}' >> $BSDINSTALL_TMPETC/rc.conf.net
+
+if [ ! -z $BSDINSTALL_CONFIGCURRENT ]; then
+	. $BSDINSTALL_TMPETC/rc.conf.net
+	ifconfig ${INTERFACE} `eval echo \\\$ifconfig_${INTERFACE}_ipv6`
+	route delete default
+	route add default ${ipv6_defaultrouter}
+fi
+