Add FreeBSD; change README to use json-pp for Ubuntu

Makefile.am

@@ -15,6 +15,7 @@ EXTRA_DIST = \
 	sample-etc_dhclient-exit-hooks \
 	sample-etc_dhcpc_dhcpcd-eth0.exe \
 	sample-etc_ppp_ip-up.local \
+	sample-etc_rc.d_ddclient.freebsd \
 	sample-etc_rc.d_init.d_ddclient \
 	sample-etc_rc.d_init.d_ddclient.alpine \
 	sample-etc_rc.d_init.d_ddclient.lsb \

README.md

@@ -141,7 +141,7 @@ make sure you have perl and the required modules installed
 
 if you plan to use cloudflare or feedns you need the perl json module
 
-    apt-get install libjson-any-perl
+    apt-get install libjson-pp-perl
 
 for IPv6 you also need to instal the perl io-socker-inet6 module
 
@@ -151,6 +151,28 @@ start the first time by hand
 
     service ddclient start
 
+### FreeBSD style rc files and daemon mode
+
+    mkdir -p /usr/local/etc/rc.d
+    cp sample-etc_rc.d_ddclient.freebsd /usr/local/etc/rc.d/ddclient
+
+enable automatic startup when booting
+
+    sysrc ddclient_enable=YES
+
+make sure you have perl and the required modules installed
+
+    pkg install perl5 p5-Data-Validate-IP p5-IO-Socket-SSL
+
+if you plan to use cloudflare or feedns you need the perl json module
+
+    pkg install p5-JSON-PP
+
+start the service manually for the first time
+
+    service ddclient start
+
+
 If you are not using daemon-mode, configure cron and dhcp or ppp as described below.
 
 -------------------------------------------------------------------------------

sample-etc_rc.d_ddclient.freebsd

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+# PROVIDE: ddclient
+# REQUIRE: LOGIN
+# KEYWORD: shutdown
+#
+# Add the following lines to /etc/rc.conf.local or /etc/rc.conf
+# to enable this service:
+#
+# ddclient_enable (bool):       Set to NO by default.
+#                               Set it to YES to enable ddclient.
+
+. /etc/rc.subr
+
+name=ddclient
+rcvar=ddclient_enable
+ddclient_conf="/etc/ddclient/ddclient.conf"
+
+command="/usr/local/sbin/${name}"
+load_rc_config $name
+
+delay=$(grep -v '^\s*#' "${ddclient_conf}" | grep -i -m 1 "daemon" | awk -F '=' '{print $2}')
+
+if [ -z "${delay}" ]
+then
+   ddclient_flags="-daemon 300"
+else
+   ddclient_flags=""
+fi
+
+run_rc_command "$1"