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@ -34,13 +34,15 @@ VERBOSE_MODE=1 # default mode is log to console, but easily changed with parame |
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# directory to store run information to. |
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RUNDIR=$(uci -q get ddns.global.run_dir) || RUNDIR="/var/run/ddns" |
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[ -d $RUNDIR ] || mkdir -p -m755 $RUNDIR |
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# NEW # directory to store log files |
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LOGDIR=$(uci -q get ddns.global.log_dir) || LOGDIR="/var/log/ddns" |
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[ -d $LOGDIR ] || mkdir -p -m755 $LOGDIR |
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LOGFILE="" # NEW # logfile can be enabled as new option |
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PIDFILE="" # pid file |
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UPDFILE="" # store UPTIME of last update |
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DATFILE="/tmp/ddns_$$.dat" # save stdout data of WGet and other extern programs called |
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ERRFILE="/tmp/ddns_$$.err" # save stderr output of WGet and other extern programs called |
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DATFILE="" # save stdout data of WGet and other extern programs called |
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ERRFILE="" # save stderr output of WGet and other extern programs called |
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# number of lines to before rotate logfile |
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LOGLINES=$(uci -q get ddns.global.log_lines) || LOGLINES=250 |
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@ -224,7 +226,6 @@ write_log() { |
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[ $VERBOSE_MODE -gt 0 -o $__EXIT -gt 0 ] && echo -e "$__MSG" |
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# write to logfile |
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if [ ${use_logfile:-1} -eq 1 -o $VERBOSE_MODE -gt 1 ]; then |
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[ -d $LOGDIR ] || mkdir -p -m 755 $LOGDIR |
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echo -e "$__MSG" >> $LOGFILE |
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# VERBOSE_MODE > 1 then NO loop so NO truncate log to $LOGLINES lines |
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[ $VERBOSE_MODE -gt 1 ] || sed -i -e :a -e '$q;N;'$LOGLINES',$D;ba' $LOGFILE |
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@ -302,8 +303,7 @@ get_service_data() { |
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awk ' gsub("\x27", "\"") { if ($1~/^[^\"]*$/) $1="\""$1"\"" }; { if ( $NF~/^[^\"]*$/) $NF="\""$NF"\"" }; { print $0 }') |
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IFS=$__NEWLINE_IFS |
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for __LINE in $__SERVICES |
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do |
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for __LINE in $__SERVICES; do |
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#grep out proper parts of data and use echo to remove quotes |
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__NAME=$(echo $__LINE | grep -o "^[\t ]*\"[^\"]*\"" | xargs -r -n1 echo) |
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__DATA=$(echo $__LINE | grep -o "\"[^\"]*\"[\t ]*$" | xargs -r -n1 echo) |
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@ -459,7 +459,7 @@ verify_host_port() { |
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# command error |
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[ $__ERR -gt 0 ] && { |
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write_log 3 "DNS Resolver Error - BusyBox nslookup Error '$__ERR'" |
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write_log 7 "Error:\n$(cat $ERRFILE)" |
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write_log 7 "$(cat $ERRFILE)" |
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return 2 |
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} |
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# extract IP address |
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@ -499,7 +499,7 @@ verify_host_port() { |
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__ERR=$? |
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[ $__ERR -eq 0 ] && return 0 |
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write_log 3 "Connect error - BusyBox nc (netcat) Error '$__ERR'" |
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write_log 7 "Error:\n$(cat $ERRFILE)" |
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write_log 7 "$(cat $ERRFILE)" |
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return 3 |
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else # nc compiled without extensions (no timeout support) |
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__RUNPROG="timeout 2 -- /usr/bin/nc $__IP $__PORT </dev/null >$DATFILE 2>$ERRFILE" |
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@ -533,7 +533,7 @@ verify_dns() { |
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elif [ $__ERR -ne 0 ]; then |
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__CNT=$(( $__CNT + 1 )) # increment error counter |
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# if error count > retry_count leave here |
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[ $__CNT -gt $retry_count ] && \ |
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[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \ |
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write_log 14 "Verify DNS server '$1' failed after $retry_count retries" |
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write_log 4 "Verify DNS server '$1' failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds" |
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@ -593,7 +593,7 @@ verify_proxy() { |
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elif [ $__ERR -gt 0 ]; then |
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__CNT=$(( $__CNT + 1 )) # increment error counter |
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# if error count > retry_count leave here |
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[ $__CNT -gt $retry_count ] && \ |
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[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \ |
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write_log 14 "Verify Proxy server '$1' failed after $retry_count retries" |
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write_log 4 "Verify Proxy server '$1' failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds" |
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@ -637,7 +637,7 @@ do_transfer() { |
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# disable proxy if no set (there might be .wgetrc or .curlrc or wrong environment set) |
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[ -z "$proxy" ] && __PROG="$__PROG --no-proxy" |
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__RUNPROG="$__PROG $__URL" # build final command |
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__RUNPROG="$__PROG '$__URL'" # build final command |
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__PROG="GNU Wget" # reuse for error logging |
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# 2nd choice is cURL IPv4/IPv6/HTTPS |
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@ -671,7 +671,7 @@ do_transfer() { |
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write_log 13 "cURL: libcurl compiled without Proxy support" |
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fi |
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__RUNPROG="$__PROG $__URL" # build final command |
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__RUNPROG="$__PROG '$__URL'" # build final command |
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__PROG="cURL" # reuse for error logging |
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# busybox Wget (did not support neither IPv6 nor HTTPS) |
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@ -686,8 +686,8 @@ do_transfer() { |
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# disable proxy if no set (there might be .wgetrc or .curlrc or wrong environment set) |
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[ -z "$proxy" ] && __PROG="$__PROG -Y off" |
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__RUNPROG="$__PROG $__URL 2>$ERRFILE" # build final command |
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__PROG="Busybox Wget" # reuse for error logging |
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__RUNPROG="$__PROG '$__URL' 2>$ERRFILE" # build final command |
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__PROG="Busybox Wget" # reuse for error logging |
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else |
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write_log 13 "Neither 'Wget' nor 'cURL' installed or executable" |
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@ -695,7 +695,7 @@ do_transfer() { |
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while : ; do |
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write_log 7 "#> $__RUNPROG" |
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$__RUNPROG # DO transfer |
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eval $__RUNPROG # DO transfer |
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__ERR=$? # save error code |
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[ $__ERR -eq 0 ] && return 0 # no error leave |
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[ $LUCI_HELPER ] && return 1 # no retry if called by LuCI helper script |
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@ -711,7 +711,7 @@ do_transfer() { |
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__CNT=$(( $__CNT + 1 )) # increment error counter |
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# if error count > retry_count leave here |
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[ $__CNT -gt $retry_count ] && \ |
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[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \ |
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write_log 14 "Transfer failed after $retry_count retries" |
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write_log 4 "Transfer failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds" |
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@ -750,11 +750,11 @@ send_update() { |
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write_log 7 "DDNS Provider answered:\n$(cat $DATFILE)" |
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# analyse provider answers |
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# "good [IP_ADR]" = successful |
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# "nochg [IP_ADR]" = no change but OK |
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grep -E "good|nochg" $DATFILE >/dev/null 2>&1 |
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return $? # "0" if "good" or "nochg" found |
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return 0 |
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# TODO analyse providers answer |
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# "good" or "nochg" = dyndns.com compatible API |
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# grep -i -E "good|nochg" $DATFILE >/dev/null 2>&1 |
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# return $? # "0" if found |
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fi |
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} |
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@ -846,6 +846,9 @@ get_local_ip () { |
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} |
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[ $LUCI_HELPER ] && return 1 # no retry if called by LuCI helper script |
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write_log 7 "Data detected:\n$(cat $DATFILE)" |
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[ $VERBOSE_MODE -gt 1 ] && { |
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# VERBOSE_MODE > 1 then NO retry |
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write_log 4 "Get local IP via '$ip_source' failed - Verbose Mode: $VERBOSE_MODE - NO retry on error" |
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@ -854,9 +857,8 @@ get_local_ip () { |
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__CNT=$(( $__CNT + 1 )) # increment error counter |
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# if error count > retry_count leave here |
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[ $__CNT -gt $retry_count ] && \ |
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[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \ |
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write_log 14 "Get local IP via '$ip_source' failed after $retry_count retries" |
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write_log 4 "Get local IP via '$ip_source' failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds" |
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sleep $RETRY_SECONDS & |
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PID_SLEEP=$! |
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@ -908,7 +910,7 @@ get_registered_ip() { |
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__ERR=$? |
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if [ $__ERR -ne 0 ]; then |
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write_log 3 "$__PROG error: '$__ERR'" |
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write_log 7 "Error:\n$(cat $ERRFILE)" |
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write_log 7 "$(cat $ERRFILE)" |
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else |
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if [ "$__PROG" = "BIND host" ]; then |
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__DATA=$(cat $DATFILE | awk -F "address " '/has/ {print $2; exit}' ) |
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@ -934,7 +936,7 @@ get_registered_ip() { |
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__CNT=$(( $__CNT + 1 )) # increment error counter |
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# if error count > retry_count leave here |
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[ $__CNT -gt $retry_count ] && \ |
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[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \ |
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write_log 14 "Get registered/public IP for '$domain' failed after $retry_count retries" |
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write_log 4 "Get registered/public IP for '$domain' failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds" |
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@ -966,18 +968,19 @@ trap_handler() { |
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[ $PID_SLEEP -ne 0 ] && kill -$1 $PID_SLEEP 2>/dev/null # kill pending sleep if exist |
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case $1 in |
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0) if [ $__ERR -eq 0 ]; then |
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0) if [ $__ERR -eq 0 ]; then |
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write_log 5 "PID '$$' exit normal at $(eval $DATE_PROG)\n" |
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else |
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write_log 4 "PID '$$' exit WITH ERROR '$__ERR' at $(eval $DATE_PROG)\n" |
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fi ;; |
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1) write_log 6 "PID '$$' received 'SIGHUP' at $(eval $DATE_PROG)" |
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eval "$0 $SECTION_ID $VERBOSE_MODE &" # reload config via restarting script |
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exit 0 ;; |
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2) write_log 5 "PID '$$' terminated by 'SIGINT' at $(eval $DATE_PROG)\n";; |
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3) write_log 5 "PID '$$' terminated by 'SIGQUIT' at $(eval $DATE_PROG)\n";; |
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1) write_log 6 "PID '$$' received 'SIGHUP' at $(eval $DATE_PROG)" |
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# reload config via starting the script again |
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eval "/usr/lib/ddns/dynamic_dns_updater.sh $SECTION_ID $VERBOSE_MODE &" |
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exit 0 ;; # and leave this one |
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2) write_log 5 "PID '$$' terminated by 'SIGINT' at $(eval $DATE_PROG)\n";; |
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3) write_log 5 "PID '$$' terminated by 'SIGQUIT' at $(eval $DATE_PROG)\n";; |
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15) write_log 5 "PID '$$' terminated by 'SIGTERM' at $(eval $DATE_PROG)\n";; |
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*) write_log 13 "Unhandled signal '$1' in 'trap_handler()'";; |
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*) write_log 13 "Unhandled signal '$1' in 'trap_handler()'";; |
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esac |
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__PIDS=$(pgrep -P $$) # get my childs (pgrep prints with "newline") |
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Steven Barth
10 years ago