1# $NetBSD: 50-ntp.conf,v 1.6 2014/11/07 20:51:03 roy Exp $
2
3# Sample dhcpcd hook script for ntp
4# Like our resolv.conf hook script, we store a database of ntp.conf files
5# and merge into /etc/ntp.conf
6
7# You can set the env var NTP_CONF to another file like this
8#   dhcpcd -e NTP_CONF=/usr/pkg/etc/ntpd.conf
9# or by adding this to /etc/dhcpcd.enter-hook
10#   NTP_CONF=/usr/pkg/etc/ntpd.conf
11# to use OpenNTPD instead of the default NTP.
12
13if type invoke-rc.d >/dev/null 2>&1; then
14	# Debian has a seperate file for DHCP config to avoid stamping on
15	# the master.
16	[ -e /var/lib/ntp ] || mkdir /var/lib/ntp
17	: ${ntp_service:=ntp}
18	: ${NTP_DHCP_CONF:=/var/lib/ntp/ntp.conf.dhcp}
19fi
20
21: ${ntp_service:=ntpd}
22: ${ntp_restart_cmd:=service_condcommand $ntp_service restart}
23ntp_conf_dir="$state_dir/ntp.conf"
24
25# If we have installed OpenNTPD but not NTP then prefer it
26# XXX If both exist then update both?
27if [ -z "$NTP_CONF" -a -e /etc/ntpd.conf -a ! -e /etc/ntp.conf ]; then
28	: ${NTP_CONF:=/etc/ntpd.conf}
29else
30	: ${NTP_CONF:=/etc/ntp.conf}
31fi
32
33ntp_conf=${NTP_CONF}
34NL="
35"
36
37build_ntp_conf()
38{
39	local cf="$state_dir/ntp.conf.$ifname"
40	local interfaces= header= srvs= servers= x=
41
42	# Build a list of interfaces
43	interfaces=$(list_interfaces "$ntp_conf_dir")
44
45	if [ -n "$interfaces" ]; then
46		# Build the header
47		for x in ${interfaces}; do
48			header="$header${header:+, }$x"
49		done
50
51		# Build a server list
52		srvs=$(cd "$ntp_conf_dir";
53			key_get_value "server " $interfaces)
54		if [ -n "$srvs" ]; then
55			for x in $(uniqify $srvs); do
56				servers="${servers}server $x$NL"
57			done
58		fi
59	fi
60
61	# Merge our config into ntp.conf
62	[ -e "$cf" ] && rm -f "$cf"
63	[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
64
65	if [ -n "$NTP_DHCP_CONF" ]; then
66		[ -e "$ntp_conf" ] && cp "$ntp_conf" "$cf"
67		ntp_conf="$NTP_DHCP_CONF"
68	elif [ -e "$ntp_conf" ]; then
69		remove_markers "$signature_base" "$signature_base_end" \
70			"$ntp_conf" > "$cf"
71	fi
72
73	if [ -n "$servers" ]; then
74		echo "$signature_base${header:+ $from }$header" >> "$cf"
75		printf %s "$servers" >> "$cf"
76		echo "$signature_base_end${header:+ $from }$header" >> "$cf"
77	else
78		[ -e "$ntp_conf" -a -e "$cf" ] || return
79	fi
80
81	# If we changed anything, restart ntpd
82	if change_file "$ntp_conf" "$cf"; then
83		[ -n "$ntp_restart_cmd" ] && eval $ntp_restart_cmd
84	fi
85}
86
87add_ntp_conf()
88{
89	local cf="$ntp_conf_dir/$ifname" x=
90
91	[ -e "$cf" ] && rm "$cf"
92	[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
93	if [ -n "$new_ntp_servers" ]; then
94		for x in $new_ntp_servers; do
95			echo "server $x" >> "$cf"
96		done
97	fi
98	build_ntp_conf
99}
100
101remove_ntp_conf()
102{
103	if [ -e "$ntp_conf_dir/$ifname" ]; then
104		rm "$ntp_conf_dir/$ifname"
105	fi
106	build_ntp_conf
107}
108
109# For ease of use, map DHCP6 names onto our DHCP4 names
110case "$reason" in
111BOUND6|RENEW6|REBIND6|REBOOT6|INFORM6)
112	new_ntp_servers="$new_dhcp6_sntp_servers"
113;;
114esac
115
116if $if_up; then
117	add_ntp_conf
118elif $if_down; then
119	remove_ntp_conf
120fi
121