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ddns-scripts: Copied from previous repository

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Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
This commit is contained in:
Nikos Mavrogiannopoulos 2014-06-08 14:03:31 +02:00
parent b99e4cdf3b
commit ced8b84f1c
9 changed files with 1116 additions and 0 deletions
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44
net/ddns-scripts/Makefile Normal file
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include $(TOPDIR)/rules.mk
PKG_NAME:=ddns-scripts
PKG_VERSION:=1.0.0
PKG_RELEASE:=22
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/ddns-scripts
SECTION:=net
CATEGORY:=Network
SUBMENU:=IP Addresses and Names
TITLE:=Dynamic DNS Scripts
PKGARCH:=all
endef
define Package/ddns-scripts/description
A highly configurable set of scripts for doing
dynamic dns updates
endef
define Build/Prepare
endef
define Build/Configure
endef
define Build/Compile
endef
define Package/ddns-scripts/conffiles
/etc/config/ddns
endef
define Package/ddns-scripts/install
$(INSTALL_DIR) $(1)
$(CP) ./files/* $(1)/
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/etc/init.d/ddns $(1)/etc/init.d/
endef
$(eval $(call BuildPackage,ddns-scripts))

97
net/ddns-scripts/files/etc/config/ddns Normal file
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#################################################################
# In order to enable dynamic dns you need at least one section,
# and in that seciton the "enabled" option must be set to one
#
# Each section represents an update to a different service
#
# You specify your domain name, your username and your password
# with the optins "domain", "username" and "password" respectively
#
# Next you need to specify the name of the service you are
# connecting to "eg. dyndns.org". The format of the update
# urls for several different dynamic dns services is specified
# in the /usr/lib/ddns/services file. This list is hardly complete
# as there are many, many different dynamic dns services. If your
# service is on the list you can merely specify it with the
# "service_name" option. Otherwise you will need to determine
# the format of the url to update with. You can either add an
# entry to the /usr/lib/ddns/services file or specify this with
# the "update_url" option.
#
# We also need to specify the source of the ip address to associate with
# your domain. The "ip_source" option can be "network", "interface"
# or "web", with "network" as the default.
#
# If "ip_source" is "network" you specify a network section in your
# /etc/network config file (e.g. "wan", which is the default) with
# the "ip_network" option. If you specify "wan", you will update
# with whatever the ip for your wan is.
#
# If "ip_source" is "interface" you specify a hardware interface
# (e.g. "eth1") and whatever the current ip of this interface is
# will be associated with the domain when an update is performed.
#
# If "ip_source" is "script" you specify a script to obtain ip address.
# The "ip_script" option should contain path to your script.
#
# The last possibility is that "ip_source" is "web", which means
# that in order to obtain our ip address we will connect to a
# website, and the first valid ip address listed on that page
# will be assumed to be ours. If you are behind another firewall
# this is the best option since none of the local networks or
# interfaces will have the external ip. The website to connect
# to is specified by the "ip_url" option. You may specify multiple
# urls in the option, separated by whitespace.
#
# Finally we need to specify how often to check whether we need
# to check whether the ip address has changed (and if so update
# it) and how often we need to force an update ( many services
# will expire your domain if you don't connect and do an update
# every so often). Use the "check_interval" to specify how
# often to check whether an update is necessary, the "retry_interval"
# to specify how often to retry in case the update has failed, and
# the "force_interval" option to specify how often to force an
# update. Specify the units for these values with the "check_unit",
# the "retry_init" and the "force_unit" options. Units can be
# "days", "hours", "minutes" or "seconds". The default force_unit
# is hours, the default retry_unit is seconds and the default
# check_unit is seconds. The default check_interval is 600 seconds,
# or ten minutes. The default retry_interval is 60 seconds, or one
# minute. The default force_interval is 72 hours or 3 days.
#
#
#########################################################
config service "myddns"
option enabled "0"
option interface "wan"
option use_syslog "1"
option service_name "dyndns.org"
option domain "mypersonaldomain.dyndns.org"
option username "myusername"
option password "mypassword"
option use_https "0"
option force_interval "72"
option force_unit "hours"
option check_interval "10"
option check_unit "minutes"
option retry_interval "60"
option retry_unit "seconds"
#option ip_source "network"
#option ip_network "wan"
#option ip_source "interface"
#option ip_interface "eth0.1"
#option ip_source "script"
#option ip_script "path to your scrip"
option ip_source "web"
option ip_url "http://checkip.dyndns.com/"
#option update_url "http://[USERNAME]:[PASSWORD]@members.dyndns.org/nic/update?hostname=[DOMAIN]&myip=[IP]"

9
net/ddns-scripts/files/etc/hotplug.d/iface/25-ddns Normal file
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#!/bin/sh
. /usr/lib/ddns/dynamic_dns_functions.sh
if [ "$ACTION" = "ifup" ]; then
start_daemon_for_all_ddns_sections "$INTERFACE"
fi

12
net/ddns-scripts/files/etc/init.d/ddns Normal file
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#!/bin/sh /etc/rc.common
START=95
start() {
. /usr/lib/ddns/dynamic_dns_functions.sh
start_daemon_for_all_ddns_sections
}
stop() {
killall -9 dynamic_dns_updater.sh
}

144
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_functions.sh Normal file
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# /usr/lib/dynamic_dns/dynamic_dns_functions.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
. /lib/functions.sh
. /lib/functions/network.sh
#loads all options for a given package and section
#also, sets all_option_variables to a list of the variable names
load_all_config_options()
{
pkg_name="$1"
section_id="$2"
ALL_OPTION_VARIABLES=""
# this callback loads all the variables
# in the section_id section when we do
# config_load. We need to redefine
# the option_cb for different sections
# so that the active one isn't still active
# after we're done with it. For reference
# the $1 variable is the name of the option
# and $2 is the name of the section
config_cb()
{
if [ ."$2" = ."$section_id" ]; then
option_cb()
{
ALL_OPTION_VARIABLES="$ALL_OPTION_VARIABLES $1"
}
else
option_cb() { return 0; }
fi
}
config_load "$pkg_name"
for var in $ALL_OPTION_VARIABLES
do
config_get "$var" "$section_id" "$var"
done
}
get_current_ip()
{
#if ip source is not defined, assume we want to get ip from wan
if [ "$ip_source" != "interface" ] && [ "$ip_source" != "web" ] && [ "$ip_source" != "script" ]
then
ip_source="network"
fi
if [ "$ip_source" = "network" ]
then
if [ -z "$ip_network" ]
then
ip_network="wan"
fi
fi
current_ip='';
if [ "$ip_source" = "network" ]
then
network_get_ipaddr current_ip "$ip_network" || return
elif [ "$ip_source" = "interface" ]
then
current_ip=$(ifconfig $ip_interface | grep -o 'inet addr:[0-9.]*' | grep -o "$ip_regex")
elif [ "$ip_source" = "script" ]
then
# get ip from script
current_ip=$($ip_script)
else
# get ip from web
# we check each url in order in ip_url variable, and if no ips are found we use dyndns ip checker
# ip is set to FIRST expression in page that matches the ip_regex regular expression
for addr in $ip_url
do
if [ -z "$current_ip" ]
then
current_ip=$(echo $( wget -O - $addr 2>/dev/null) | grep -o "$ip_regex")
fi
done
#here we hard-code the dyndns checkip url in case no url was specified
if [ -z "$current_ip" ]
then
current_ip=$(echo $( wget -O - http://checkip.dyndns.org 2>/dev/null) | grep -o "$ip_regex")
fi
fi
echo "$current_ip"
}
verbose_echo()
{
if [ "$verbose_mode" = 1 ]
then
echo $1
fi
}
syslog_echo()
{
if [ "$use_syslog" = 1 ]
then
echo $1|logger -t ddns-scripts-$service_id
fi
}
start_daemon_for_all_ddns_sections()
{
local event_interface="$1"
SECTIONS=""
config_cb()
{
SECTIONS="$SECTIONS $2"
}
config_load "ddns"
for section in $SECTIONS
do
local iface
config_get iface "$section" interface "wan"
[ "$iface" = "$event_interface" ] || continue
/usr/lib/ddns/dynamic_dns_updater.sh $section 0 > /dev/null 2>&1 &
done
}
monotonic_time()
{
local uptime
read uptime < /proc/uptime
echo "${uptime%%.*}"
}

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

65
net/ddns-scripts/files/usr/lib/ddns/services Normal file
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# This file contains the update urls for various dynamic dns services.
# Column one contains the service name, column two contains the update url.
# within the update url there are 4 variables you can use: [USERNAME],
# [PASSWORD], [DOMAIN] and [IP]. These are substituted for the username,
# password, and domain name specified in the /etc/config/ddns file when an
# update is performed. The IP is substituted for the current ip address of the
# router. These variables are case sensitive, while urls generally are not, so
# if you need to enter the same text in the url (which seems very unlikely) put
# that text in lowercase, while the variables should remain in uppercase
"dyndns.org" "http://[USERNAME]:[PASSWORD]@members.dyndns.org/nic/update?hostname=[DOMAIN]&myip=[IP]"
"changeip.com" "http://[USERNAME]:[PASSWORD]@nic.changeip.com/nic/update?u=[USERNAME]&p=[PASSWORD]&cmd=update&hostname=[DOMAIN]&ip=[IP]"
"zoneedit.com" "http://[USERNAME]:[PASSWORD]@dynamic.zoneedit.com/auth/dynamic.html?host=[DOMAIN]&dnsto=[IP]"
"free.editdns.net" "http://dyndns-free.editdns.net/api/dynLinux.php?p=[PASSWORD]&r=[DOMAIN]"
#noip is an alias of no-ip, so allow both names for the same service
"no-ip.com" "http://[USERNAME]:[PASSWORD]@dynupdate.no-ip.com/nic/update?hostname=[DOMAIN]&myip=[IP]"
"noip.com" "http://[USERNAME]:[PASSWORD]@dynupdate.no-ip.com/nic/update?hostname=[DOMAIN]&myip=[IP]"
#freedns.afraid.org is weird, you just need an update code, for which we use the password variable
"freedns.afraid.org" "http://freedns.afraid.org/dynamic/update.php?[PASSWORD]&address=[IP]"
#### ADD YOURS HERE! ######################################################################################
# #
# There are TONS of dynamic dns services out there. There's a huge list of them at: #
# http://www.dmoz.org/Computers/Software/Internet/Servers/Address_Management/Dynamic_DNS_Services/ #
# If anyone has time they could update this file to be compatible with a bunch of them #
# #
###########################################################################################################
# DNS Max and resellers' update urls
"dnsmax.com" "http://update.dnsmax.com/update/?username=[USERNAME]&password=[PASSWORD]&resellerid=1&clientname=openwrt&clientversion=8.09&protocolversion=2.0&updatehostname=[DOMAIN]&ip=[IP]"
"thatip.com" "http://update.dnsmax.com/update/?username=[USERNAME]&password=[PASSWORD]&resellerid=2&clientname=openwrt&clientversion=8.09&protocolversion=2.0&updatehostname=[DOMAIN]&ip=[IP]"
# Hurricane Electric Dynamic DNS
"he.net" "http://[DOMAIN]:[PASSWORD]@dyn.dns.he.net/nic/update?hostname=[DOMAIN]&myip=[IP]"
# DNSdynamic.org
"dnsdynamic.org" "http://[USERNAME]:[PASSWORD]@www.dnsdynamic.org/api/?hostname=[DOMAIN]&myip=[IP]"
# dnsExit.com free dynamic DNS update url
"dnsexit.com" "http://www.dnsexit.com/RemoteUpdate.sv?login=[USERNAME]&password=[PASSWORD]&host=[DOMAIN]&myip=[IP]"
# OVH
"ovh.com" "http://[USERNAME]:[PASSWORD]@www.ovh.com/nic/update?system=dyndns&hostname=[DOMAIN]&myip=[IP]"
# dns-o-matic is a free service by opendns.com for updating multiple hosts and
# dynamic dns services in one api call. To update all your configured services
# at once, use "all.dnsomatic.com as the hostname.
"dnsomatic.com" "http://[USERNAME]:[PASSWORD]@updates.dnsomatic.com/nic/update?hostname=[DOMAIN]&myip=[IP]"
# 3322.org
"3322.org" "http://[USERNAME]:[PASSWORD]@members.3322.org/dyndns/update?system=dyndns&hostname=[DOMAIN]&myip=[IP]"
# namecheap.com
"namecheap.com" "http://dynamicdns.park-your-domain.com/update?host=[USERNAME]&domain=[DOMAIN]&password=[PASSWORD]&ip=[IP]"
# easydns.com dynamic DNS
"easydns.com" "http://[USERNAME]:[PASSWORD]@api.cp.easydns.com/dyn/tomato.php?hostname=[DOMAIN]&myip=[IP]"
# Winco DDNS
"ddns.com.br" "http://[DOMAIN]:[PASSWORD]@members.ddns.com.br/nic/update?hostname=[DOMAIN]&myip=[IP]"
# Mythic Beasts (https://www.mythic-beasts.com) Dynamic DNS
"mythic-beasts.com" "http://dnsapi4.mythic-beasts.com/?domain=[USERNAME]&password=[PASSWORD]&command=REPLACE%20[DOMAIN]%2060%20A%20DYNAMIC_IP"

25
net/ddns-scripts/files/usr/lib/ddns/url_escape.sed Normal file
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@ -0,0 +1,25 @@
# sed url escaping
s:%:%25:g
s: :%20:g
s:<:%3C:g
s:>:%3E:g
s:#:%23:g
s:{:%7B:g
s:}:%7D:g
s:|:%7C:g
s:\\:%5C:g
s:\^:%5E:g
s:~:%7E:g
s:\[:%5B:g
s:\]:%5D:g
s:`:%60:g
s:;:%3B:g
s:/:%2F:g
s:?:%3F:g
s^:^%3A^g
s:@:%40:g
s:=:%3D:g
s:&:%26:g
s:\$:%24:g
s:\!:%21:g
s:\*:%2A:g