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[for-15.05] ddns-scripts: backport of 2.7.6-10
Backport of current version 2.7.6-10 - more services - more functionality - be prepared for next versions compiled ipk-packages available at https://github.com/chris5560/OpenWrt-Backports/tree/master/for-CC15.05.01/ddns-scripts_2.7.6-10 Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
This commit is contained in:
Christian Schoenebeck
Regular → Executable
+145
-60
@@ -1,57 +1,112 @@
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#!/bin/sh
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# /usr/lib/ddns/dynamic_dns_updater.sh
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#
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# Original written by Eric Paul Bishop, January 2008
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#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
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# Original written by Eric Paul Bishop, January 2008
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# (Loosely) based on the script on the one posted by exobyte in the forums here:
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# http://forum.openwrt.org/viewtopic.php?id=14040
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#
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# extended and partial rewritten in August 2014 by
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#.Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
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# to support:
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# - IPv6 DDNS services
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# - DNS Server to retrieve registered IP including TCP transport (Ticket 7820)
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# - Proxy Server to send out updates
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# - force_interval=0 to run once (Luci Ticket 538)
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# - the usage of BIND's host command instead of BusyBox's nslookup if installed
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# - extended Verbose Mode and log file support for better error detection
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# - wait for interface to fully come up, before the first update is done
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# extended and partial rewritten
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#.2014-2017 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
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#
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# variables in small chars are read from /etc/config/ddns
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# variables in big chars are defined inside these scripts as global vars
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# variables in big chars beginning with "__" are local defined inside functions only
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# set -vx #script debugger
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[ $# -lt 1 -o -n "${2//[0-3]/}" -o ${#2} -gt 1 ] && {
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echo -e "\n USAGE:"
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echo -e " $0 [SECTION] [VERBOSE_MODE]\n"
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echo " [SECTION] - service section as defined in /etc/config/ddns"
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echo " [VERBOSE_MODE] - '0' NO output to console"
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echo " '1' output to console"
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echo " '2' output to console AND logfile"
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echo " + run once WITHOUT retry on error"
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echo " '3' output to console AND logfile"
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echo " + run once WITHOUT retry on error"
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echo -e " + NOT sending update to DDNS service\n"
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. $(dirname $0)/dynamic_dns_functions.sh # global vars are also defined here
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usage() {
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cat << EOF
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Usage:
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$MYPROG [options] -- command
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Commands:
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start Start SECTION or NETWORK or all
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stop Stop NETWORK or all
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Parameters:
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-n NETWORK Start/Stop sections in background monitoring NETWORK, force VERBOSE=0
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-S SECTION SECTION to start
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use either -N NETWORK or -S SECTION
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-h show this help and exit
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-V show version and exit
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-v LEVEL VERBOSE=LEVEL (default 1)
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'0' NO output to console
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'1' output to console
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'2' output to console AND logfile
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+ run once WITHOUT retry on error
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'3' output to console AND logfile
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+ run once WITHOUT retry on error
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+ NOT sending update to DDNS service
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EOF
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}
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usage_err() {
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printf %s\\n "$MYPROG: $@" >&2
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usage >&2
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exit 1
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}
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. /usr/lib/ddns/dynamic_dns_functions.sh # global vars are also defined here
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while getopts ":hv:n:S:V" OPT; do
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case "$OPT" in
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h) usage; exit 0;;
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v) VERBOSE=$OPTARG;;
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n) NETWORK=$OPTARG;;
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S) SECTION_ID=$OPTARG;;
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V) printf %s\\n "ddns-scripts $VERSION"; exit 0;;
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:) usage_err "option -$OPTARG missing argument";;
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\?) usage_err "invalid option -$OPTARG";;
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*) usage_err "unhandled option -$OPT $OPTARG";;
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esac
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done
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shift $((OPTIND - 1 )) # OPTIND is 1 based
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SECTION_ID="$1"
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VERBOSE_MODE=${2:-1} # default mode is log to console
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[ -n "$NETWORK" -a -n "$SECTION_ID" ] && usage_err "use either option '-N' or '-S' not both"
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[ $# -eq 0 ] && usage_err "missing command"
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[ $# -gt 1 ] && usage_err "to much commands"
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case "$1" in
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start)
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if [ -n "$NETWORK" ]; then
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start_daemon_for_all_ddns_sections "$NETWORK"
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exit 0
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fi
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if [ -z "$SECTION_ID" ]; then
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start_daemon_for_all_ddns_sections
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exit 0
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fi
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;;
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stop)
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if [ -n "$INTERFACE" ]; then
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stop_daemon_for_all_ddns_sections "$NETWORK"
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exit 0
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else
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stop_daemon_for_all_ddns_sections
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exit 0
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fi
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exit 1
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;;
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reload)
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killall -1 dynamic_dns_updater.sh 2>/dev/null
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exit $?
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;;
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*) usage_err "unknown command - $1";;
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esac
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# set file names
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PIDFILE="$RUNDIR/$SECTION_ID.pid" # Process ID file
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UPDFILE="$RUNDIR/$SECTION_ID.update" # last update successful send (system uptime)
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DATFILE="$RUNDIR/$SECTION_ID.dat" # save stdout data of WGet and other extern programs called
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ERRFILE="$RUNDIR/$SECTION_ID.err" # save stderr output of WGet and other extern programs called
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LOGFILE="$LOGDIR/$SECTION_ID.log" # log file
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PIDFILE="$ddns_rundir/$SECTION_ID.pid" # Process ID file
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UPDFILE="$ddns_rundir/$SECTION_ID.update" # last update successful send (system uptime)
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DATFILE="$ddns_rundir/$SECTION_ID.dat" # save stdout data of WGet and other extern programs called
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ERRFILE="$ddns_rundir/$SECTION_ID.err" # save stderr output of WGet and other extern programs called
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LOGFILE="$ddns_logdir/$SECTION_ID.log" # log file
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# VERBOSE_MODE > 1 delete logfile if exist to create an empty one
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# VERBOSE > 1 delete logfile if exist to create an empty one
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# only with this data of this run for easier diagnostic
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# new one created by write_log function
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[ $VERBOSE_MODE -gt 1 -a -f $LOGFILE ] && rm -f $LOGFILE
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[ $VERBOSE -gt 1 -a -f $LOGFILE ] && rm -f $LOGFILE
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# TRAP handler
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trap "trap_handler 0 \$?" 0 # handle script exit with exit status
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@@ -70,16 +125,19 @@ trap "trap_handler 15" 15 # SIGTERM Termination
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#
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# defined options (also used as variable):
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#
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# enable self-explanatory
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# enabled self-explanatory
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# interface network interface used by hotplug.d i.e. 'wan' or 'wan6'
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#
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# service_name Which DDNS service do you use or "custom"
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# update_url URL to use to update your "custom" DDNS service
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# update_script SCRIPT to use to update your "custom" DDNS service
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#
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# domain Your DNS name / replace [DOMAIN] in update_url
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# username Username of your DDNS service account / replace [USERNAME] in update_url
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# password Password of your DDNS service account / replace [PASSWORD] in update_url
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# lookup_host FQDN of ONE of your at DDNS service defined host / required to validate if IP update happen/necessary
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# domain Nomally your DDNS hostname / replace [DOMAIN] in update_url
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# username Username of your DDNS service account / urlenceded and replace [USERNAME] in update_url
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# password Password of your DDNS service account / urlencoded and replace [PASSWORD] in update_url
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# param_enc Optional parameter for (later) usage / urlencoded and replace [PARAMENC] in update_url
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# param_opt Optional parameter for (later) usage / replace [PARAMOPT] in update_url
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#
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# use_https use HTTPS to update DDNS service
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# cacert file or directory where HTTPS can find certificates to verify server; 'IGNORE' ignore check of server certificate
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@@ -108,6 +166,7 @@ trap "trap_handler 15" 15 # SIGTERM Termination
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# force_dnstcp force communication with DNS server via TCP instead of default UDP
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# proxy using a proxy for communication !!! ALSO used to detect local IP via web => return proxy's IP !!!
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# use_logfile self-explanatory "/var/log/ddns/$SECTION_ID.log"
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# is_glue the record that should be updated is a glue record
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#
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# some functionality needs
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# - GNU Wget or cURL installed for sending updates to DDNS service
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@@ -128,6 +187,7 @@ ERR_LAST=$? # save return code - equal 0 if SECTION_ID found
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[ -z "$force_ipversion" ] && force_ipversion=0 # default let system decide
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[ -z "$force_dnstcp" ] && force_dnstcp=0 # default UDP
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[ -z "$ip_source" ] && ip_source="network"
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[ -z "$is_glue" ] && is_glue=0 # default the ddns record is not a glue record
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[ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 0 ] && ip_network="wan" # IPv4: default wan
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[ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 1 ] && ip_network="wan6" # IPv6: default wan6
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[ "$ip_source" = "web" -a -z "$ip_url" -a $use_ipv6 -eq 0 ] && ip_url="http://checkip.dyndns.com"
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@@ -136,24 +196,26 @@ ERR_LAST=$? # save return code - equal 0 if SECTION_ID found
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# SECTION_ID does not exists
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[ $ERR_LAST -ne 0 ] && {
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[ $VERBOSE_MODE -le 1 ] && VERBOSE_MODE=2 # force console out and logfile output
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[ -f $LOGFILE ] && rm -f $LOGFILE # clear logfile before first entry
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[ $VERBOSE -le 1 ] && VERBOSE=2 # force console out and logfile output
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[ -f $LOGFILE ] && rm -f $LOGFILE # clear logfile before first entry
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write_log 7 "************ ************** ************** **************"
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write_log 5 "PID '$$' started at $(eval $DATE_PROG)"
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write_log 7 "ddns version : $VERSION"
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write_log 7 "uci configuration:\n$(uci -q show ddns | grep '=service' | sort)"
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write_log 14 "Service section '$SECTION_ID' not defined"
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}
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write_log 7 "************ ************** ************** **************"
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write_log 5 "PID '$$' started at $(eval $DATE_PROG)"
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write_log 7 "ddns version : $VERSION"
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write_log 7 "uci configuration:\n$(uci -q show ddns.$SECTION_ID | sort)"
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write_log 7 "ddns version : $(opkg list-installed ddns-scripts | cut -d ' ' -f 3)"
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case $VERBOSE_MODE in
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# write_log 7 "ddns version : $(opkg list-installed ddns-scripts | cut -d ' ' -f 3)"
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case $VERBOSE in
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0) write_log 7 "verbose mode : 0 - run normal, NO console output";;
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1) write_log 7 "verbose mode : 1 - run normal, console mode";;
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2) write_log 7 "verbose mode : 2 - run once, NO retry on error";;
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3) write_log 7 "verbose mode : 3 - run once, NO retry on error, NOT sending update";;
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*) write_log 14 "error detecting VERBOSE_MODE '$VERBOSE_MODE'";;
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*) write_log 14 "error detecting VERBOSE '$VERBOSE'";;
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esac
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# check enabled state otherwise we don't need to continue
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@@ -162,24 +224,41 @@ esac
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# determine what update url we're using if a service_name is supplied
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# otherwise update_url is set inside configuration (custom update url)
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# or update_script is set inside configuration (custom update script)
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[ -n "$service_name" ] && get_service_data update_url update_script
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[ -n "$service_name" ] && get_service_data update_url update_script UPD_ANSWER
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[ -z "$update_url" -a -z "$update_script" ] && write_log 14 "No update_url found/defined or no update_script found/defined!"
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[ -n "$update_script" -a ! -f "$update_script" ] && write_log 14 "Custom update_script not found!"
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# without domain and possibly username and password we can do nothing for you
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[ -z "$domain" ] && write_log 14 "Service section not configured correctly! Missing 'domain'"
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# temporary needed to convert existing uci settings
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[ -z "$lookup_host" ] && {
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uci -q set ddns.$SECTION_ID.lookup_host="$domain"
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uci -q commit ddns
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lookup_host="$domain"
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}
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# later versions only check if configured correctly
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# without lookup host and possibly other required options we can do nothing for you
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[ -z "$lookup_host" ] && write_log 14 "Service section not configured correctly! Missing 'lookup_host'"
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[ -n "$update_url" ] && {
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# only check if update_url is given, update_scripts have to check themselves
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[ -z "$domain" ] && $(echo "$update_url" | grep "\[DOMAIN\]" >/dev/null 2>&1) && \
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write_log 14 "Service section not configured correctly! Missing 'domain'"
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[ -z "$username" ] && $(echo "$update_url" | grep "\[USERNAME\]" >/dev/null 2>&1) && \
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write_log 14 "Service section not configured correctly! Missing 'username'"
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[ -z "$password" ] && $(echo "$update_url" | grep "\[PASSWORD\]" >/dev/null 2>&1) && \
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write_log 14 "Service section not configured correctly! Missing 'password'"
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[ -z "$param_enc" ] && $(echo "$update_url" | grep "\[PARAMENC\]" >/dev/null 2>&1) && \
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write_log 14 "Service section not configured correctly! Missing 'param_enc'"
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[ -z "$param_opt" ] && $(echo "$update_url" | grep "\[PARAMOPT\]" >/dev/null 2>&1) && \
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write_log 14 "Service section not configured correctly! Missing 'param_opt'"
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}
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# url encode username (might be email or something like this)
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# and password (might have special chars for security reason)
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# and optional parameter "param_enc"
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[ -n "$username" ] && urlencode URL_USER "$username"
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[ -n "$password" ] && urlencode URL_PASS "$password"
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[ -n "$param_enc" ] && urlencode URL_PENC "$param_enc"
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# verify ip_source 'script' if script is configured and executable
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if [ "$ip_source" = "script" ]; then
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@@ -220,8 +299,8 @@ get_uptime CURR_TIME
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if [ $LAST_TIME -eq 0 ]; then
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write_log 7 "last update: never"
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else
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EPOCH_TIME=$(( $(date +%s) - CURR_TIME + LAST_TIME ))
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EPOCH_TIME="date -d @$EPOCH_TIME +'$DATE_FORMAT'"
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EPOCH_TIME=$(( $(date +%s) - $CURR_TIME + $LAST_TIME ))
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EPOCH_TIME="date -d @$EPOCH_TIME +'$ddns_dateformat'"
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write_log 7 "last update: $(eval $EPOCH_TIME)"
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fi
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@@ -244,12 +323,15 @@ get_registered_ip REGISTERED_IP "NO_RETRY"
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ERR_LAST=$?
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# No error or No IP set otherwise retry
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[ $ERR_LAST -eq 0 -o $ERR_LAST -eq 127 ] || get_registered_ip REGISTERED_IP
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# on IPv6 we use expanded version to be shure when comparing
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[ $use_ipv6 -eq 1 ] && expand_ipv6 "$REGISTERED_IP" REGISTERED_IP
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# loop endlessly, checking ip every check_interval and forcing an updating once every force_interval
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write_log 6 "Starting main loop at $(eval $DATE_PROG)"
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while : ; do
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get_local_ip LOCAL_IP # read local IP
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[ $use_ipv6 -eq 1 ] && expand_ipv6 "$LOCAL_IP" LOCAL_IP # on IPv6 we use expanded version
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# prepare update
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# never updated or forced immediate then NEXT_TIME = 0
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@@ -261,8 +343,8 @@ while : ; do
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# send update when current time > next time or local ip different from registered ip
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if [ $CURR_TIME -ge $NEXT_TIME -o "$LOCAL_IP" != "$REGISTERED_IP" ]; then
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if [ $VERBOSE_MODE -gt 2 ]; then
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write_log 7 "Verbose Mode: $VERBOSE_MODE - NO UPDATE send"
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if [ $VERBOSE -gt 2 ]; then
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write_log 7 "Verbose Mode: $VERBOSE - NO UPDATE send"
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elif [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
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write_log 7 "Update needed - L: '$LOCAL_IP' <> R: '$REGISTERED_IP'"
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else
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@@ -270,8 +352,8 @@ while : ; do
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fi
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ERR_LAST=0
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[ $VERBOSE_MODE -lt 3 ] && {
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# only send if VERBOSE_MODE < 3
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[ $VERBOSE -lt 3 ] && {
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# only send if VERBOSE < 3
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send_update "$LOCAL_IP"
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ERR_LAST=$? # save return value
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}
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@@ -288,27 +370,30 @@ while : ; do
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[ "$LOCAL_IP" != "$REGISTERED_IP" ] \
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&& write_log 6 "Update successful - IP '$LOCAL_IP' send" \
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|| write_log 6 "Forced update successful - IP: '$LOCAL_IP' send"
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elif [ $ERR_LAST -eq 127 ]; then
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write_log 3 "No update send to DDNS Provider"
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else
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write_log 3 "Can not update IP at DDNS Provider"
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write_log 3 "IP update not accepted by DDNS Provider"
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fi
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fi
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# now we wait for check interval before testing if update was recognized
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# only sleep if VERBOSE_MODE <= 2 because otherwise nothing was send
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[ $VERBOSE_MODE -le 2 ] && {
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# only sleep if VERBOSE <= 2 because otherwise nothing was send
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[ $VERBOSE -le 2 ] && {
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write_log 7 "Waiting $CHECK_SECONDS seconds (Check Interval)"
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sleep $CHECK_SECONDS &
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PID_SLEEP=$!
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wait $PID_SLEEP # enable trap-handler
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PID_SLEEP=0
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} || write_log 7 "Verbose Mode: $VERBOSE_MODE - NO Check Interval waiting"
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} || write_log 7 "Verbose Mode: $VERBOSE - NO Check Interval waiting"
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REGISTERED_IP="" # clear variable
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get_registered_ip REGISTERED_IP # get registered/public IP
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[ $use_ipv6 -eq 1 ] && expand_ipv6 "$REGISTERED_IP" REGISTERED_IP # on IPv6 we use expanded version
|
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# IP's are still different
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if [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
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if [ $VERBOSE_MODE -le 1 ]; then # VERBOSE_MODE <=1 then retry
|
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if [ $VERBOSE -le 1 ]; then # VERBOSE <=1 then retry
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ERR_UPDATE=$(( $ERR_UPDATE + 1 ))
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[ $retry_count -gt 0 -a $ERR_UPDATE -gt $retry_count ] && \
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write_log 14 "Updating IP at DDNS provider failed after $retry_count retries"
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@@ -316,17 +401,17 @@ while : ; do
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continue # loop to beginning
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else
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write_log 4 "Updating IP at DDNS provider failed"
|
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write_log 7 "Verbose Mode: $VERBOSE_MODE - NO retry"; exit 1
|
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write_log 7 "Verbose Mode: $VERBOSE - NO retry"; exit 1
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fi
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else
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||||
# we checked successful the last update
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ERR_UPDATE=0 # reset error counter
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fi
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# force_update=0 or VERBOSE_MODE > 1 - leave here
|
||||
[ $VERBOSE_MODE -gt 1 ] && write_log 7 "Verbose Mode: $VERBOSE_MODE - NO reloop"
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# force_update=0 or VERBOSE > 1 - leave here
|
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[ $VERBOSE -gt 1 ] && write_log 7 "Verbose Mode: $VERBOSE - NO reloop"
|
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[ $FORCE_SECONDS -eq 0 ] && write_log 6 "Configured to run once"
|
||||
[ $VERBOSE_MODE -gt 1 -o $FORCE_SECONDS -eq 0 ] && exit 0
|
||||
[ $VERBOSE -gt 1 -o $FORCE_SECONDS -eq 0 ] && exit 0
|
||||
|
||||
write_log 6 "Rerun IP check at $(eval $DATE_PROG)"
|
||||
done
|
||||
|
||||
Reference in New Issue
Block a user