From b695d548a37dceacb42f504346fbbf1a12fbfb73 Mon Sep 17 00:00:00 2001
From: Sheldon Hearn <sheldonh@FreeBSD.org>
Date: Mon, 19 Nov 2001 11:41:51 +0000
Subject: [PATCH] Use shell functions for printing hex instead of printf(1) so
 that printf(1) can be dropped from the system shell as a shell builtin.

---
 etc/rc.d/network_ipv6 | 36 ++++++++++++++++++++++++++++++++++--
 etc/rc.network6       | 36 ++++++++++++++++++++++++++++++++++--
 2 files changed, 68 insertions(+), 4 deletions(-)

diff --git a/etc/rc.d/network_ipv6 b/etc/rc.d/network_ipv6
index 99f6b32c8fc..1dc8473e0d8 100644
--- a/etc/rc.d/network_ipv6
+++ b/etc/rc.d/network_ipv6
@@ -32,6 +32,37 @@
 # first before contemplating any changes here.  If you do need to change
 # this file for some reason, we would like to know about it.
 
+hexdigit () {
+	if [ $1 -lt 10 ]; then
+		echo $1
+	else
+		case $1 in
+		10)	echo a ;;
+		11)	echo b ;;
+		12)	echo c ;;
+		13)	echo d ;;
+		14)	echo e ;;
+		15)	echo f ;;
+		esac
+	fi
+}
+
+hexprint () {
+	val=$1
+	str=''
+
+	dig=`hexdigit $((${val} & 15))`
+	str=${dig}${str}
+	val=$((${val} >> 4))
+	while [ ${val} -gt 0 ]; do
+		dig=`hexdigit $((${val} & 15))`
+		str=${dig}${str}
+		val=$((${val} >> 4))
+	done
+
+	echo ${str}
+}
+
 # IPv6 startup
 
 network6_pass1() {
@@ -336,8 +367,9 @@ network6_stf_setup() {
 		IFS=".$IFS"
 		set ${stf_interface_ipv4addr}
 		IFS="$OIFS"
-		ipv4_in_hexformat=`printf "%x:%x\n" \
-			$(($1*256 + $2)) $(($3*256 + $4))`
+		hexfrag1=`hexprint $(($1*256 + $2))`
+		hexfrag2=`hexprint $(($3*256 + $4))`
+		ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
 		case ${stf_interface_ipv6_ifid} in
 		[Aa][Uu][Tt][Oo] | '')
 			for i in ${ipv6_network_interfaces}; do
diff --git a/etc/rc.network6 b/etc/rc.network6
index 99f6b32c8fc..1dc8473e0d8 100644
--- a/etc/rc.network6
+++ b/etc/rc.network6
@@ -32,6 +32,37 @@
 # first before contemplating any changes here.  If you do need to change
 # this file for some reason, we would like to know about it.
 
+hexdigit () {
+	if [ $1 -lt 10 ]; then
+		echo $1
+	else
+		case $1 in
+		10)	echo a ;;
+		11)	echo b ;;
+		12)	echo c ;;
+		13)	echo d ;;
+		14)	echo e ;;
+		15)	echo f ;;
+		esac
+	fi
+}
+
+hexprint () {
+	val=$1
+	str=''
+
+	dig=`hexdigit $((${val} & 15))`
+	str=${dig}${str}
+	val=$((${val} >> 4))
+	while [ ${val} -gt 0 ]; do
+		dig=`hexdigit $((${val} & 15))`
+		str=${dig}${str}
+		val=$((${val} >> 4))
+	done
+
+	echo ${str}
+}
+
 # IPv6 startup
 
 network6_pass1() {
@@ -336,8 +367,9 @@ network6_stf_setup() {
 		IFS=".$IFS"
 		set ${stf_interface_ipv4addr}
 		IFS="$OIFS"
-		ipv4_in_hexformat=`printf "%x:%x\n" \
-			$(($1*256 + $2)) $(($3*256 + $4))`
+		hexfrag1=`hexprint $(($1*256 + $2))`
+		hexfrag2=`hexprint $(($3*256 + $4))`
+		ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
 		case ${stf_interface_ipv6_ifid} in
 		[Aa][Uu][Tt][Oo] | '')
 			for i in ${ipv6_network_interfaces}; do