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Merge pull request #143 from jmccrohan/ddns-scripts 

ddns-scripts: remove erroneously committed backup file
lilik-openwrt-22.03
sbyx 10 years ago
parent
ca32200785 ce93ec8e40
commit
2a2fd41934
1 changed files with 0 additions and 360 deletions
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      net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_updater.sh~

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net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_updater.sh~ View File

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#!/bin/sh
# /usr/lib/dynamic_dns/dynamic_dns_updater.sh
#
# Written by Eric Paul Bishop, Janary 2008
# Distributed under the terms of the GNU General Public License (GPL) version 2.0
#
# This script is (loosely) based on the one posted by exobyte in the forums here:
# http://forum.openwrt.org/viewtopic.php?id=14040
#
. /usr/lib/ddns/dynamic_dns_functions.sh
service_id=$1
if [ -z "$service_id" ]
then
echo "ERRROR: You must specify a service id (the section name in the /etc/config/ddns file) to initialize dynamic DNS."
return 1
fi
#default mode is verbose_mode, but easily turned off with second parameter
verbose_mode="1"
if [ -n "$2" ]
then
verbose_mode="$2"
fi
###############################################################
# Leave this comment here, to clearly document variable names
# that are expected/possible
#
# Now use load_all_config_options to load config
# options, which is a much more flexible solution.
#
#
#config_load "ddns"
#
#config_get enabled $service_id enabled
#config_get service_name $service_id service_name
#config_get update_url $service_id update_url
#
#
#config_get username $service_id username
#config_get password $service_id password
#config_get domain $service_id domain
#
#
#config_get use_https $service_id use_https
#config_get use_syslog $service_id use_syslog
#config_get cacert $service_id cacert
#
#config_get ip_source $service_id ip_source
#config_get ip_interface $service_id ip_interface
#config_get ip_network $service_id ip_network
#config_get ip_url $service_id ip_url
#
#config_get force_interval $service_id force_interval
#config_get force_unit $service_id force_unit
#
#config_get check_interval $service_id check_interval
#config_get check_unit $service_id check_unit
#########################################################
load_all_config_options "ddns" "$service_id"
#some defaults
if [ -z "$check_interval" ]
then
check_interval=600
fi
if [ -z "$retry_interval" ]
then
retry_interval=60
fi
if [ -z "$check_unit" ]
then
check_unit="seconds"
fi
if [ -z "$force_interval" ]
then
force_interval=72
fi
if [ -z "$force_unit" ]
then
force_unit="hours"
fi
if [ -z $use_syslog ]
then
use_syslog=0
fi
if [ -z "$use_https" ]
then
use_https=0
fi
#some constants
retrieve_prog="/usr/bin/wget -O - ";
if [ "x$use_https" = "x1" ]
then
/usr/bin/wget --version 2>&1 |grep -q "\+ssl"
if [ $? -eq 0 ]
then
if [ -f "$cacert" ]
then
retrieve_prog="${retrieve_prog}--ca-certificate=${cacert} "
elif [ -d "$cacert" ]
then
retrieve_prog="${retrieve_prog}--ca-directory=${cacert} "
fi
else
retrieve_prog="/usr/bin/curl "
if [ -f "$cacert" ]
then
retrieve_prog="${retrieve_prog}--cacert $cacert "
elif [ -d "$cacert" ]
then
retrieve_prog="${retrieve_prog}--capath $cacert "
fi
fi
fi
service_file="/usr/lib/ddns/services"
ip_regex="[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}"
NEWLINE_IFS='
'
#determine what update url we're using if the service_name is supplied
if [ -n "$service_name" ]
then
#remove any lines not containing data, and then make sure fields are enclosed in double quotes
quoted_services=$(cat $service_file | grep "^[\t ]*[^#]" | awk ' gsub("\x27", "\"") { if ($1~/^[^\"]*$/) $1="\""$1"\"" }; { if ( $NF~/^[^\"]*$/) $NF="\""$NF"\"" }; { print $0 }' )
#echo "quoted_services = $quoted_services"
OLD_IFS=$IFS
IFS=$NEWLINE_IFS
for service_line in $quoted_services
do
#grep out proper parts of data and use echo to remove quotes
next_name=$(echo $service_line | grep -o "^[\t ]*\"[^\"]*\"" | xargs -r -n1 echo)
next_url=$(echo $service_line | grep -o "\"[^\"]*\"[\t ]*$" | xargs -r -n1 echo)
if [ "$next_name" = "$service_name" ]
then
update_url=$next_url
fi
done
IFS=$OLD_IFS
fi
if [ "x$use_https" = x1 ]
then
update_url=$(echo $update_url | sed -e 's/^http:/https:/')
fi
verbose_echo "update_url=$update_url"
#if this service isn't enabled then quit
if [ "$enabled" != "1" ]
then
return 0
fi
#compute update interval in seconds
case "$force_unit" in
"days" )
force_interval_seconds=$(($force_interval*60*60*24))
;;
"hours" )
force_interval_seconds=$(($force_interval*60*60))
;;
"minutes" )
force_interval_seconds=$(($force_interval*60))
;;
"seconds" )
force_interval_seconds=$force_interval
;;
* )
#default is hours
force_interval_seconds=$(($force_interval*60*60))
;;
esac
#compute check interval in seconds
case "$check_unit" in
"days" )
check_interval_seconds=$(($check_interval*60*60*24))
;;
"hours" )
check_interval_seconds=$(($check_interval*60*60))
;;
"minutes" )
check_interval_seconds=$(($check_interval*60))
;;
"seconds" )
check_interval_seconds=$check_interval
;;
* )
#default is seconds
check_interval_seconds=$check_interval
;;
esac
#compute retry interval in seconds
case "$retry_unit" in
"days" )
retry_interval_seconds=$(($retry_interval*60*60*24))
;;
"hours" )
retry_interval_seconds=$(($retry_interval*60*60))
;;
"minutes" )
retry_interval_seconds=$(($retry_interval*60))
;;
"seconds" )
retry_interval_seconds=$retry_interval
;;
* )
#default is seconds
retry_interval_seconds=$retry_interval
;;
esac
verbose_echo "force seconds = $force_interval_seconds"
verbose_echo "check seconds = $check_interval_seconds"
#kill old process if it exists & set new pid file
if [ -d /var/run/dynamic_dns ]
then
#if process is already running, stop it
if [ -e "/var/run/dynamic_dns/$service_id.pid" ]
then
old_pid=$(cat /var/run/dynamic_dns/$service_id.pid)
test_match=$(ps | grep "^[\t ]*$old_pid")
verbose_echo "old process id (if it exists) = \"$test_match\""
if [ -n "$test_match" ]
then
kill $old_pid
fi
fi
else
#make dir since it doesn't exist
mkdir /var/run/dynamic_dns
fi
echo $$ > /var/run/dynamic_dns/$service_id.pid
#determine when the last update was
current_time=$(monotonic_time)
last_update=$(( $current_time - (2*$force_interval_seconds) ))
if [ -e "/var/run/dynamic_dns/$service_id.update" ]
then
last_update=$(cat /var/run/dynamic_dns/$service_id.update)
fi
time_since_update=$(($current_time - $last_update))
human_time_since_update=$(( $time_since_update / ( 60 * 60 ) ))
verbose_echo "time_since_update = $human_time_since_update hours"
#do update and then loop endlessly, checking ip every check_interval and forcing an updating once every force_interval
while [ true ]
do
registered_ip=$(echo $(nslookup "$domain" 2>/dev/null) | grep -o "Name:.*" | grep -o "$ip_regex")
current_ip=$(get_current_ip)
current_time=$(monotonic_time)
time_since_update=$(($current_time - $last_update))
syslog_echo "Running IP check ..."
verbose_echo "Running IP check..."
verbose_echo "current system ip = $current_ip"
verbose_echo "registered domain ip = $registered_ip"
if [ "$current_ip" != "$registered_ip" ] || [ $force_interval_seconds -lt $time_since_update ]
then
verbose_echo "update necessary, performing update ..."
#do replacement
final_url=$update_url
for option_var in $ALL_OPTION_VARIABLES
do
if [ "$option_var" != "update_url" ]
then
replace_name=$(echo "\[$option_var\]" | tr 'a-z' 'A-Z')
replace_value=$(eval echo "\$$option_var")
replace_value=$(echo $replace_value | sed -f /usr/lib/ddns/url_escape.sed)
final_url=$(echo $final_url | sed s^"$replace_name"^"$replace_value"^g )
fi
done
final_url=$(echo $final_url | sed s^"\[HTTPAUTH\]"^"${username//^/\\^}${password:+:${password//^/\\^}}"^g )
final_url=$(echo $final_url | sed s/"\[IP\]"/"$current_ip"/g )
verbose_echo "updating with url=\"$final_url\""
#here we actually connect, and perform the update
update_output=$( $retrieve_prog "$final_url" )
if [ $? -gt 0 ]
then
syslog_echo "update failed, retrying in $retry_interval_seconds seconds"
verbose_echo "update failed"
sleep $retry_interval_seconds
continue
fi
syslog_echo "Update successful"
verbose_echo "Update Output:"
verbose_echo "$update_output"
verbose_echo ""
#save the time of the update
current_time=$(monotonic_time)
last_update=$current_time
time_since_update='0'
registered_ip=$current_ip
human_time=$(date)
verbose_echo "update complete, time is: $human_time"
echo "$last_update" > "/var/run/dynamic_dns/$service_id.update"
else
human_time=$(date)
human_time_since_update=$(( $time_since_update / ( 60 * 60 ) ))
verbose_echo "update unnecessary"
verbose_echo "time since last update = $human_time_since_update hours"
verbose_echo "the time is now $human_time"
fi
#sleep for 10 minutes, then re-check ip && time since last update
sleep $check_interval_seconds
done
#should never get here since we're a daemon, but I'll throw it in anyway
return 0

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