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ddns-scripts: update dynamic_dns_*.sh installation
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
This commit is contained in:
Florian Eckert
1391
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_functions.sh
Normal file
1391
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_functions.sh
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File diff suppressed because it is too large
Load Diff
172
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_lucihelper.sh
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172
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_lucihelper.sh
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@@ -0,0 +1,172 @@
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#!/bin/sh
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# /usr/lib/ddns/dynamic_dns_lucihelper.sh
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#
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#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
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#.2014-2018 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
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# This script is used by luci-app-ddns
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#
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# variables in small chars are read from /etc/config/ddns as parameter given here
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# variables in big chars are defined inside these scripts as gloval 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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. /usr/lib/ddns/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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get_local_ip using given INTERFACE or NETWORK or SCRIPT or URL
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get_registered_ip for given FQDN
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verify_dns given DNS-SERVER
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verify_proxy given PROXY
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start start given SECTION
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reload force running ddns processes to reload changed configuration
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restart restart all ddns processes
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Parameters:
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-6 => use_ipv6=1 (default 0)
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-d DNS-SERVER => dns_server=SERVER[:PORT]
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-f => force_ipversion=1 (default 0)
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-g => is_glue=1 (default 0)
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-i INTERFACE => ip_interface=INTERFACE; ip_source="interface"
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-l FQDN => lookup_host=FQDN
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-n NETWORK => ip_network=NETWORK; ip_source="network"
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-p PROXY => proxy=[USER:PASS@]PROXY:PORT
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-s SCRIPT => ip_script=SCRIPT; ip_source="script"
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-t => force_dnstcp=1 (default 0)
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-u URL => ip_url=URL; ip_source="web"
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-S SECTION SECTION to start
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-h => show this help and exit
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-L => use_logfile=1 (default 0)
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-v LEVEL => VERBOSE=LEVEL (default 0)
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-V => show version and exit
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EOF
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}
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usage_err() {
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printf %s\\n "$MYPROG: $@" >&2
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usage >&2
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exit 255
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}
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# preset some variables, wrong or not set in ddns-functions.sh
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SECTION_ID="lucihelper"
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LOGFILE="$ddns_logdir/$SECTION_ID.log"
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DATFILE="$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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DDNSPRG="/usr/lib/ddns/dynamic_dns_updater.sh"
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VERBOSE=0 # no console logging
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# global variables normally set by reading DDNS UCI configuration
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use_syslog=0 # no syslog
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use_logfile=0 # no logfile
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use_ipv6=0 # Use IPv6 - default IPv4
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force_ipversion=0 # Force IP Version - default 0 - No
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force_dnstcp=0 # Force TCP on DNS - default 0 - No
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is_glue=0 # Is glue record - default 0 - No
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use_https=0 # not needed but must be set
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while getopts ":6d:fghi:l:n:p:s:S:tu:Lv:V" OPT; do
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case "$OPT" in
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6) use_ipv6=1;;
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d) dns_server="$OPTARG";;
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f) force_ipversion=1;;
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g) is_glue=1;;
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i) ip_interface="$OPTARG"; ip_source="interface";;
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l) lookup_host="$OPTARG";;
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n) ip_network="$OPTARG"; ip_source="network";;
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p) proxy="$OPTARG";;
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s) ip_script="$OPTARG"; ip_source="script";;
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t) force_dnstcp=1;;
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u) ip_url="$OPTARG"; ip_source="web";;
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h) usage; exit 255;;
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L) use_logfile=1;;
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v) VERBOSE=$OPTARG;;
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S) SECTION=$OPTARG;;
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V) printf %s\\n "ddns-scripts $VERSION"; exit 255;;
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:) usage_err "option -$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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[ $# -eq 0 ] && usage_err "missing command"
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__RET=0
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case "$1" in
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get_registered_ip)
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[ -z "$lookup_host" ] && usage_err "command 'get_registered_ip': 'lookup_host' not set"
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write_log 7 "-----> get_registered_ip IP"
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[ -z "$SECTION" ] || IPFILE="$ddns_rundir/$SECTION.ip"
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IP=""
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get_registered_ip IP
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__RET=$?
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[ $__RET -ne 0 ] && IP=""
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printf "%s" "$IP"
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;;
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verify_dns)
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[ -z "$dns_server" ] && usage_err "command 'verify_dns': 'dns_server' not set"
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write_log 7 "-----> verify_dns '$dns_server'"
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verify_dns "$dns_server"
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__RET=$?
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;;
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verify_proxy)
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[ -z "$proxy" ] && usage_err "command 'verify_proxy': 'proxy' not set"
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write_log 7 "-----> verify_proxy '$proxy'"
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verify_proxy "$proxy"
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__RET=$?
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;;
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get_local_ip)
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[ -z "$ip_source" ] && usage_err "command 'get_local_ip': 'ip_source' not set"
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[ -n "$proxy" -a "$ip_source" = "web" ] && {
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# proxy defined, used for ip_source=web
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export HTTP_PROXY="http://$proxy"
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export HTTPS_PROXY="http://$proxy"
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export http_proxy="http://$proxy"
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export https_proxy="http://$proxy"
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}
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# don't need IP only the return code
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IP=""
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if [ "$ip_source" = "web" -o "$ip_source" = "script" ]; then
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# we wait only 3 seconds for an
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# answer from "web" or "script"
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write_log 7 "-----> timeout 3 -- get_local_ip IP"
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timeout 3 -- get_local_ip IP
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else
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write_log 7 "-----> get_local_ip IP"
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get_local_ip IP
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fi
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__RET=$?
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;;
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start)
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[ -z "$SECTION" ] && usage_err "command 'start': 'SECTION' not set"
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if [ $VERBOSE -eq 0 ]; then # start in background
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$DDNSPRG -v 0 -S $SECTION -- start &
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else
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$DDNSPRG -v $VERBOSE -S $SECTION -- start
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fi
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;;
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reload)
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$DDNSPRG -- reload
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;;
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restart)
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$DDNSPRG -- stop
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sleep 1
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$DDNSPRG -- start
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;;
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*)
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__RET=255
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;;
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esac
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# remove out and err file
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[ -f $DATFILE ] && rm -f $DATFILE
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[ -f $ERRFILE ] && rm -f $ERRFILE
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return $__RET
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432
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_updater.sh
Normal file
432
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_updater.sh
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@@ -0,0 +1,432 @@
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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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#.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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# extended and partial rewritten
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#.2014-2018 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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. $(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: $@" >&2
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usage >&2
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exit 1
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}
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while getopts ":hv:n:S:V" OPT; do
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case "$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 $((OPTIND - 1 )) # OPTIND is 1 based
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[ -n "$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 - $1";;
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esac
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# set file names
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PIDFILE="$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/$SECTION_ID.err" # save stderr output of WGet and other extern programs called
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IPFILE="$ddns_rundir/$SECTION_ID.ip" #
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LOGFILE="$ddns_logdir/$SECTION_ID.log" # log file
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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 -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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trap "trap_handler 1" 1 # SIGHUP Hangup / reload config
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trap "trap_handler 2" 2 # SIGINT Terminal interrupt
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trap "trap_handler 3" 3 # SIGQUIT Terminal quit
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# trap "trap_handler 9" 9 # SIGKILL no chance to trap
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trap "trap_handler 15" 15 # SIGTERM Termination
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################################################################################
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# Leave this comment here, to clearly document variable names that are expected/possible
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# Use load_all_config_options to load config options, which is a much more flexible solution.
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#
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# config_load "ddns"
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# config_get <variable> $SECTION_ID <option>
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#
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# defined options (also used as variable):
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#
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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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# 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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#
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# use_syslog log activity to syslog
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#
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# ip_source source to detect current local IP ('network' or 'web' or 'script' or 'interface')
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# ip_network local defined network to read IP from i.e. 'wan' or 'wan6'
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# ip_url URL to read local address from i.e. http://checkip.dyndns.com/ or http://checkipv6.dyndns.com/
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# ip_script full path and name of your script to detect local IP
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# ip_interface physical interface to use for detecting
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#
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# check_interval check for changes every !!! checks below 10 minutes make no sense because the Internet
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# check_unit 'days' 'hours' 'minutes' !!! needs about 5-10 minutes to sync an IP-change for an DNS entry
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#
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# force_interval force to send an update to your service if no change was detected
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# force_unit 'days' 'hours' 'minutes' !!! force_interval="0" runs this script once for use i.e. with cron
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#
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# retry_interval if error was detected retry in
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# retry_unit 'days' 'hours' 'minutes' 'seconds'
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# retry_count number of retries before scripts stops
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#
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# use_ipv6 detecting/sending IPv6 address
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# force_ipversion force usage of IPv4 or IPv6 for the whole detection and update communication
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# dns_server using a non default dns server to get Registered IP from Internet
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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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# - BIND host installed to detect Registered IP
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#
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################################################################################
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load_all_config_options "ddns" "$SECTION_ID"
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ERR_LAST=$? # save return code - equal 0 if SECTION_ID found
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# set defaults if not defined
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[ -z "$enabled" ] && enabled=0
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[ -z "$retry_count" ] && retry_count=0 # endless retry
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[ -z "$use_syslog" ] && use_syslog=2 # syslog "Notice"
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[ -z "$use_https" ] && use_https=0 # not use https
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[ -z "$use_logfile" ] && use_logfile=1 # use logfile by default
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[ -z "$use_ipv6" ] && use_ipv6=0 # use IPv4 by default
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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 $use_ipv6 -eq 0 ] && ip_url="http://checkip.dyndns.com"
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[ "$ip_source" = "web" -a -z "$ip_url" -a $use_ipv6 -eq 1 ] && ip_url="http://checkipv6.dyndns.com"
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[ "$ip_source" = "interface" -a -z "$ip_interface" ] && ip_interface="eth1"
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# url encode username (might be email or something like this)
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# and password (might have special chars for security reason)
|
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# and optional parameter "param_enc"
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[ -n "$username" ] && urlencode URL_USER "$username"
|
||||
[ -n "$password" ] && urlencode URL_PASS "$password"
|
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[ -n "$param_enc" ] && urlencode URL_PENC "$param_enc"
|
||||
|
||||
# SECTION_ID does not exists
|
||||
[ $ERR_LAST -ne 0 ] && {
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||||
[ $VERBOSE -le 1 ] && VERBOSE=2 # force console out and logfile output
|
||||
[ -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 '$$' started at $(eval $DATE_PROG)"
|
||||
write_log 7 "ddns version : $VERSION"
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||||
write_log 7 "uci configuration:${N}$(uci -q show ddns | grep '=service' | sort)"
|
||||
write_log 14 "Service section '$SECTION_ID' not defined"
|
||||
}
|
||||
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||||
write_log 7 "************ ************** ************** **************"
|
||||
write_log 5 "PID '$$' started at $(eval $DATE_PROG)"
|
||||
write_log 7 "ddns version : $VERSION"
|
||||
write_log 7 "uci configuration:${N}$(uci -q show ddns.$SECTION_ID | sort)"
|
||||
# write_log 7 "ddns version : $(opkg list-installed ddns-scripts | cut -d ' ' -f 3)"
|
||||
case $VERBOSE in
|
||||
0) write_log 7 "verbose mode : 0 - run normal, NO console output";;
|
||||
1) write_log 7 "verbose mode : 1 - run normal, console mode";;
|
||||
2) write_log 7 "verbose mode : 2 - run once, NO retry on error";;
|
||||
3) write_log 7 "verbose mode : 3 - run once, NO retry on error, NOT sending update";;
|
||||
*) write_log 14 "error detecting VERBOSE '$VERBOSE'";;
|
||||
esac
|
||||
|
||||
# check enabled state otherwise we don't need to continue
|
||||
[ $enabled -eq 0 ] && write_log 14 "Service section disabled!"
|
||||
|
||||
# determine what update url we're using if a service_name is supplied
|
||||
# otherwise update_url is set inside configuration (custom update url)
|
||||
# or update_script is set inside configuration (custom update script)
|
||||
[ -n "$service_name" ] && {
|
||||
get_service_data "$service_name" update_url update_script UPD_ANSWER
|
||||
}
|
||||
|
||||
[ -z "$update_url" -a -z "$update_script" ] && write_log 14 "No update_url found/defined or no update_script found/defined!"
|
||||
[ -n "$update_script" -a ! -f "$update_script" ] && write_log 14 "Custom update_script not found!"
|
||||
|
||||
# temporary needed to convert existing uci settings
|
||||
[ -z "$lookup_host" ] && {
|
||||
uci -q set ddns.$SECTION_ID.lookup_host="$domain"
|
||||
uci -q commit ddns
|
||||
lookup_host="$domain"
|
||||
}
|
||||
# later versions only check if configured correctly
|
||||
|
||||
# without lookup host and possibly other required options we can do nothing for you
|
||||
[ -z "$lookup_host" ] && write_log 14 "Service section not configured correctly! Missing 'lookup_host'"
|
||||
|
||||
# verify validity of variables
|
||||
[ -n "$lookup_host" ] && sanitize_variable lookup_host "$DNS_CHARSET" ""
|
||||
[ -n "$dns_server" ] && sanitize_variable dns_server "$DNS_CHARSET" ""
|
||||
[ -n "$domain" ] && sanitize_variable domain "$DNS_CHARSET" ""
|
||||
|
||||
# Filter shell escape characters, if these are required in the URL, they
|
||||
# can still be passed url encoded
|
||||
[ -n "$param_opt" ] && sanitize_variable param_opt "" "$SHELL_ESCAPE"
|
||||
|
||||
[ -n "$update_url" ] && {
|
||||
# only check if update_url is given, update_scripts have to check themselves
|
||||
[ -z "$domain" ] && $(echo "$update_url" | grep "\[DOMAIN\]" >/dev/null 2>&1) && \
|
||||
write_log 14 "Service section not configured correctly! Missing 'domain'"
|
||||
[ -z "$username" ] && $(echo "$update_url" | grep "\[USERNAME\]" >/dev/null 2>&1) && \
|
||||
write_log 14 "Service section not configured correctly! Missing 'username'"
|
||||
[ -z "$password" ] && $(echo "$update_url" | grep "\[PASSWORD\]" >/dev/null 2>&1) && \
|
||||
write_log 14 "Service section not configured correctly! Missing 'password'"
|
||||
[ -z "$param_enc" ] && $(echo "$update_url" | grep "\[PARAMENC\]" >/dev/null 2>&1) && \
|
||||
write_log 14 "Service section not configured correctly! Missing 'param_enc'"
|
||||
[ -z "$param_opt" ] && $(echo "$update_url" | grep "\[PARAMOPT\]" >/dev/null 2>&1) && \
|
||||
write_log 14 "Service section not configured correctly! Missing 'param_opt'"
|
||||
}
|
||||
|
||||
# verify ip_source 'script' if script is configured and executable
|
||||
if [ "$ip_source" = "script" ]; then
|
||||
set -- $ip_script #handling script with parameters, we need a trick
|
||||
[ -z "$1" ] && write_log 14 "No script defined to detect local IP!"
|
||||
[ -x "$1" ] || write_log 14 "Script to detect local IP not executable!"
|
||||
fi
|
||||
|
||||
# compute update interval in seconds
|
||||
get_seconds CHECK_SECONDS ${check_interval:-10} ${check_unit:-"minutes"} # default 10 min
|
||||
get_seconds FORCE_SECONDS ${force_interval:-72} ${force_unit:-"hours"} # default 3 days
|
||||
get_seconds RETRY_SECONDS ${retry_interval:-60} ${retry_unit:-"seconds"} # default 60 sec
|
||||
[ $CHECK_SECONDS -lt 300 ] && CHECK_SECONDS=300 # minimum 5 minutes
|
||||
[ $FORCE_SECONDS -gt 0 -a $FORCE_SECONDS -lt $CHECK_SECONDS ] && FORCE_SECONDS=$CHECK_SECONDS # FORCE_SECONDS >= CHECK_SECONDS or 0
|
||||
write_log 7 "check interval: $CHECK_SECONDS seconds"
|
||||
write_log 7 "force interval: $FORCE_SECONDS seconds"
|
||||
write_log 7 "retry interval: $RETRY_SECONDS seconds"
|
||||
write_log 7 "retry counter : $retry_count times"
|
||||
|
||||
# kill old process if it exists & set new pid file
|
||||
stop_section_processes "$SECTION_ID"
|
||||
[ $? -gt 0 ] && write_log 7 "'SIGTERM' was send to old process" || write_log 7 "No old process"
|
||||
echo $$ > $PIDFILE
|
||||
|
||||
# determine when the last update was
|
||||
# the following lines should prevent multiple updates if hotplug fires multiple startups
|
||||
# as described in Ticket #7820, but did not function if never an update take place
|
||||
# i.e. after a reboot (/var is linked to /tmp)
|
||||
# using uptime as reference because date might not be updated via NTP client
|
||||
get_uptime CURR_TIME
|
||||
[ -e "$UPDFILE" ] && {
|
||||
LAST_TIME=$(cat $UPDFILE)
|
||||
# check also LAST > CURR because link of /var/run to /tmp might be removed
|
||||
# i.e. boxes with larger filesystems
|
||||
[ -z "$LAST_TIME" ] && LAST_TIME=0
|
||||
[ $LAST_TIME -gt $CURR_TIME ] && LAST_TIME=0
|
||||
}
|
||||
if [ $LAST_TIME -eq 0 ]; then
|
||||
write_log 7 "last update: never"
|
||||
else
|
||||
EPOCH_TIME=$(( $(date +%s) - $CURR_TIME + $LAST_TIME ))
|
||||
EPOCH_TIME="date -d @$EPOCH_TIME +'$ddns_dateformat'"
|
||||
write_log 7 "last update: $(eval $EPOCH_TIME)"
|
||||
fi
|
||||
|
||||
# verify DNS server
|
||||
[ -n "$dns_server" ] && verify_dns "$dns_server"
|
||||
|
||||
# verify Proxy server and set environment
|
||||
[ -n "$proxy" ] && {
|
||||
verify_proxy "$proxy" && {
|
||||
# everything ok set proxy
|
||||
export HTTP_PROXY="http://$proxy"
|
||||
export HTTPS_PROXY="http://$proxy"
|
||||
export http_proxy="http://$proxy"
|
||||
export https_proxy="http://$proxy"
|
||||
}
|
||||
}
|
||||
|
||||
# let's check if there is already an IP registered on the web
|
||||
get_registered_ip REGISTERED_IP "NO_RETRY"
|
||||
ERR_LAST=$?
|
||||
# No error or No IP set otherwise retry
|
||||
[ $ERR_LAST -eq 0 -o $ERR_LAST -eq 127 ] || get_registered_ip REGISTERED_IP
|
||||
# on IPv6 we use expanded version to be shure when comparing
|
||||
[ $use_ipv6 -eq 1 ] && expand_ipv6 "$REGISTERED_IP" REGISTERED_IP
|
||||
|
||||
# loop endlessly, checking ip every check_interval and forcing an updating once every force_interval
|
||||
write_log 6 "Starting main loop at $(eval $DATE_PROG)"
|
||||
while : ; do
|
||||
|
||||
get_local_ip LOCAL_IP # read local IP
|
||||
[ $use_ipv6 -eq 1 ] && expand_ipv6 "$LOCAL_IP" LOCAL_IP # on IPv6 we use expanded version
|
||||
|
||||
# prepare update
|
||||
# never updated or forced immediate then NEXT_TIME = 0
|
||||
[ $FORCE_SECONDS -eq 0 -o $LAST_TIME -eq 0 ] \
|
||||
&& NEXT_TIME=0 \
|
||||
|| NEXT_TIME=$(( $LAST_TIME + $FORCE_SECONDS ))
|
||||
|
||||
get_uptime CURR_TIME # get current uptime
|
||||
|
||||
# send update when current time > next time or local ip different from registered ip
|
||||
if [ $CURR_TIME -ge $NEXT_TIME -o "$LOCAL_IP" != "$REGISTERED_IP" ]; then
|
||||
if [ $VERBOSE -gt 2 ]; then
|
||||
write_log 7 "Verbose Mode: $VERBOSE - NO UPDATE send"
|
||||
elif [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
|
||||
write_log 7 "Update needed - L: '$LOCAL_IP' <> R: '$REGISTERED_IP'"
|
||||
else
|
||||
write_log 7 "Forced Update - L: '$LOCAL_IP' == R: '$REGISTERED_IP'"
|
||||
fi
|
||||
|
||||
ERR_LAST=0
|
||||
[ $VERBOSE -lt 3 ] && {
|
||||
# only send if VERBOSE < 3
|
||||
send_update "$LOCAL_IP"
|
||||
ERR_LAST=$? # save return value
|
||||
}
|
||||
|
||||
# error sending local IP to provider
|
||||
# we have no communication error (handled inside send_update/do_transfer)
|
||||
# but update was not recognized
|
||||
# do NOT retry after RETRY_SECONDS, do retry after CHECK_SECONDS
|
||||
# to early retrys will block most DDNS provider
|
||||
# providers answer is checked inside send_update() function
|
||||
if [ $ERR_LAST -eq 0 ]; then
|
||||
get_uptime LAST_TIME # we send update, so
|
||||
echo $LAST_TIME > $UPDFILE # save LASTTIME to file
|
||||
[ "$LOCAL_IP" != "$REGISTERED_IP" ] \
|
||||
&& write_log 6 "Update successful - IP '$LOCAL_IP' send" \
|
||||
|| write_log 6 "Forced update successful - IP: '$LOCAL_IP' send"
|
||||
elif [ $ERR_LAST -eq 127 ]; then
|
||||
write_log 3 "No update send to DDNS Provider"
|
||||
else
|
||||
write_log 3 "IP update not accepted by DDNS Provider"
|
||||
fi
|
||||
fi
|
||||
|
||||
# now we wait for check interval before testing if update was recognized
|
||||
# only sleep if VERBOSE <= 2 because otherwise nothing was send
|
||||
[ $VERBOSE -le 2 ] && {
|
||||
write_log 7 "Waiting $CHECK_SECONDS seconds (Check Interval)"
|
||||
sleep $CHECK_SECONDS &
|
||||
PID_SLEEP=$!
|
||||
wait $PID_SLEEP # enable trap-handler
|
||||
PID_SLEEP=0
|
||||
} || write_log 7 "Verbose Mode: $VERBOSE - NO Check Interval waiting"
|
||||
|
||||
REGISTERED_IP="" # clear variable
|
||||
get_registered_ip REGISTERED_IP # get registered/public IP
|
||||
[ $use_ipv6 -eq 1 ] && expand_ipv6 "$REGISTERED_IP" REGISTERED_IP # on IPv6 we use expanded version
|
||||
|
||||
# IP's are still different
|
||||
if [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
|
||||
if [ $VERBOSE -le 1 ]; then # VERBOSE <=1 then retry
|
||||
ERR_UPDATE=$(( $ERR_UPDATE + 1 ))
|
||||
[ $retry_count -gt 0 -a $ERR_UPDATE -gt $retry_count ] && \
|
||||
write_log 14 "Updating IP at DDNS provider failed after $retry_count retries"
|
||||
write_log 4 "Updating IP at DDNS provider failed - starting retry $ERR_UPDATE/$retry_count"
|
||||
continue # loop to beginning
|
||||
else
|
||||
write_log 4 "Updating IP at DDNS provider failed"
|
||||
write_log 7 "Verbose Mode: $VERBOSE - NO retry"; exit 1
|
||||
fi
|
||||
else
|
||||
# we checked successful the last update
|
||||
ERR_UPDATE=0 # reset error counter
|
||||
fi
|
||||
|
||||
# force_update=0 or VERBOSE > 1 - leave here
|
||||
[ $VERBOSE -gt 1 ] && write_log 7 "Verbose Mode: $VERBOSE - NO reloop"
|
||||
[ $FORCE_SECONDS -eq 0 ] && write_log 6 "Configured to run once"
|
||||
[ $VERBOSE -gt 1 -o $FORCE_SECONDS -eq 0 ] && exit 0
|
||||
|
||||
write_log 6 "Rerun IP check at $(eval $DATE_PROG)"
|
||||
done
|
||||
# we should never come here there must be a programming error
|
||||
write_log 12 "Error in 'dynamic_dns_updater.sh - program coding error"
|
||||
Reference in New Issue
Block a user