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ddns-scripts: Update to Version 2.0.1-1

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commit fc1d42f069ff930180c5f067c2eb88c9e9df7003
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 18:01:43 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

commit 731f9b4df00a8f29df2c17f102356c4d6980918a
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:59:25 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    personal helper script to create hashes for CA-Certificates for Wget and cURL using https protocol without errors.

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit df8f6c9d5d31fde24fe1d673949d272d887505e1
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:56:05 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    rewritten

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 50cdf5acb9caecfd9b65ab79696c40fb2bc7037b
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:54:40 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    rewritten

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit b1d650a345fb06402c1eac01138cbafcca123a8c
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:52:52 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    not needed in this version

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 9532114b03d428a3162b16e06706d3aa50e601bb
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:51:39 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    same function as existing services file but used for IPv6

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit a636bc25c62e23694c009886c13253c9cecc548c
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:46:56 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    New file explaining availible parameters.

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 52332354fc245861e17c898aa6b806f6c174e9a5
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:44:45 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.

    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
This commit is contained in:
Steven Barth 2014-09-22 07:59:19 +02:00
parent 0f9fce94da
commit 07d3672d46
8 changed files with 1445 additions and 545 deletions
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64
net/ddns-scripts/Makefile
View file

@ -1,8 +1,8 @@
include $(TOPDIR)/rules.mk include $(TOPDIR)/rules.mk
PKG_NAME:=ddns-scripts PKG_NAME:=ddns-scripts
PKG_VERSION:=1.0.0 PKG_VERSION:=2.0.1
PKG_RELEASE:=23 PKG_RELEASE:=1
PKG_LICENSE:=GPL-2.0 PKG_LICENSE:=GPL-2.0
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
@ -13,14 +13,22 @@ define Package/ddns-scripts
SECTION:=net SECTION:=net
CATEGORY:=Network CATEGORY:=Network
SUBMENU:=IP Addresses and Names SUBMENU:=IP Addresses and Names
TITLE:=Dynamic DNS Scripts TITLE:=Dynamic DNS Scripts (with IPv6 support)
PKGARCH:=all PKGARCH:=all
MAINTAINER:=Christian Schoenebeck <christian.schoenebeck@gmail.com> MAINTAINER:=Christian Schoenebeck <christian.schoenebeck@gmail.com>
endef endef
define Package/ddns-scripts/description define Package/ddns-scripts/description
A highly configurable set of scripts for doing A highly configurable set of scripts for doing dynamic dns updates.
dynamic dns updates NEW in this version:
- IPv6 support
- force communication to IPv4 or IPv6 only
- DNS server support
- using BIND host if installed
- DNS requests via TCP
- Proxy server support
- log file support
- support to run once
endef endef
define Build/Prepare define Build/Prepare
@ -37,10 +45,50 @@ define Package/ddns-scripts/conffiles
endef endef
define Package/ddns-scripts/install define Package/ddns-scripts/install
$(INSTALL_DIR) $(1) $(INSTALL_DIR) $(1)/etc/config
$(CP) ./files/* $(1)/ $(INSTALL_CONF) ./files/etc/config/* $(1)/etc/config
$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
$(INSTALL_BIN) ./files/etc/hotplug.d/iface/* $(1)/etc/hotplug.d/iface
$(INSTALL_DIR) $(1)/etc/init.d $(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/etc/init.d/ddns $(1)/etc/init.d/ $(INSTALL_BIN) ./files/etc/init.d/* $(1)/etc/init.d/
$(INSTALL_DIR) $(1)/usr/lib/ddns
$(INSTALL_DATA) ./files/usr/lib/ddns/service* $(1)/usr/lib/ddns
$(INSTALL_BIN) ./files/usr/lib/ddns/*.sh $(1)/usr/lib/ddns
endef
define Package/ddns-scripts/postinst
#!/bin/sh
# if run within buildroot exit
[ -n "${IPKG_INSTROOT}" ] && exit 0
# add new section "ddns" "global" if not exists
uci -q get ddns.global > /dev/null || uci -q set ddns.global='ddns'
uci -q get ddns.global.date_format > /dev/null || uci -q set ddns.global.date_format='%F %R'
uci -q get ddns.global.log_lines > /dev/null || uci -q set ddns.global.log_lines='250'
uci -q commit ddns
# clear LuCI indexcache
rm -f /tmp/luci-indexcache >/dev/null 2>&1
exit 0
endef
define Package/ddns-scripts/prerm
#!/bin/sh
# if run within buildroot exit
[ -n "${IPKG_INSTROOT}" ] && exit 0
# stop running scripts
/etc/init.d/ddns disable
/etc/init.d/ddns stop
# clear LuCI indexcache
rm -f /tmp/luci-indexcache >/dev/null 2>&1
exit 0
endef endef
$(eval $(call BuildPackage,ddns-scripts)) $(eval $(call BuildPackage,ddns-scripts))

112
net/ddns-scripts/files/etc/config/ddns
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@ -1,97 +1,29 @@
#################################################################
# 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 # Please read ddns.sample
# #
# You specify your domain name, your username and your password config ddns "global"
# with the optins "domain", "username" and "password" respectively option date_format "%F %R"
# # option run_dir "/var/run/ddns"
# Next you need to specify the name of the service you are # option log_dir "/var/log/ddns"
# connecting to "eg. dyndns.org". The format of the update option log_lines "250"
# 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"
config service "myddns_ipv4"
option service_name "dyndns.org" option service_name "dyndns.org"
option domain "mypersonaldomain.dyndns.org" option domain "yourhost.dyndns.org"
option username "myusername" option username "your_username"
option password "mypassword" option password "your_password"
option use_https "0" option interface "wan"
option ip_source "network"
option force_interval "72" option ip_network "wan"
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]"
config service "myddns_ipv6"
option update_url "http://[USERNAME]:[PASSWORD]@your.provider.net/nic/update?hostname=[DOMAIN]&myip=[IP]"
option domain "yourhost.dyndns.org"
option username "your_username"
option password "your_password"
option use_ipv6 "1"
option interface "wan6"
option ip_source "network"
option ip_network "wan6"

272
net/ddns-scripts/files/etc/config/ddns.sample Normal file
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@ -0,0 +1,272 @@
#
#
# Here you find a description on every parameter supported
# and used by ddns-scripts and corresponding LuCI application
#
# Inside your ddns configuration file (/etc/config/ddns)
# you might not find some of below described options.
# This is because you don't need to define options
# if using there defaults. The LuCI application will delete
# options that configured to there default values.
#
# If you have a working ddns configuration from old ddns-scripts (Version 1.x)
# everything will function the same with new scripts
# without any changes to the configuration.
#
# If you like to use this file for your configuration then
# use a copy, because the used software to modify the
# configuration files will throw away all empty lines
# and those starting with # (comments).
#
#####################################################################
# Global application settings
#
config ddns "global"
###########
# set date format to use for display date in logfiles
# and LuCI web application.
# For codes see man pages of date command.
# default: "%F %R" (ISO 8601 format)
# option date_format "%F %R"
###########
# set run directory to use for .pid and .update files
# there will be a separate file for every running service section
# default: "/var/run/ddns"
# option run_dir "/var/run/ddns"
###########
# set log directory to use for .log files
# there will be a separate file for every running service section
# default: "/var/log/ddns"
# option log_dir "/var/log/ddns"
###########
# set number of lines stored in .log file before auto truncated
# default: "250" lines
# option log_lines "250"
#####################################################################
# DDNS service settings
#
# for each service you want to serve you need a separate configuration
# if you need IPv4 and IPv6 you need to setup 2 separate configurations
# with different names. (i.e. "myddns_ipv4" and "myddns_ipv6")
# do not use white-spaces or dashes "-" or "@" ":" "!" or
# other special characters inside name.
config service "myddns"
########### Basic settings ########################
###########
# enable/disable this service section
# default: "0" disabled
option enabled "0"
###########
# detecting/sending IPv4 or IPv6 address to the DDNS provider
# set to "1" if you want to use IPv6
# default: "0" use IPv4
option use_ipv6 "0"
###########
# defines the network as defined in /etc/config/network
# to be monitored for up/down events to start via hotplug
default: "wan" for IPv4
default: "wan6" for IPv6
option interface "wan"
###########
# 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 for IPv4 and in
# "/usr/lib/ddns/service_ipv6" 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" or "services_ipv6" file
# or specify this with the "update_url" option.
# default: none
option service_name "dyndns.org"
# sample:
# "http://[USERNAME]:[PASSWORD]@members.dyndns.org/nic/update?hostname=[DOMAIN]&myip=[IP]"
# option update_url ""
###########
# You must specify your domain/host name, your username and your password
# as you get from you DDNS provider. Keep an eye on providers help pages.
#
# Your DNS name / replace [DOMAIN] in update_url
# default: none
option domain ""
# Username of your DDNS service account / replace [USERNAME] in update_url
# default: none
option username ""
# Password of your DDNS service account / replace [PASSWORD] in update_url
# default: none
option password ""
###########
# use HTTPS for secure communication with you DDNS provider
# personally found some providers having problems when not sending
# updates via HTTPS. Yyou must not specify "https://" in update_url.
# It's modified by the scripts themselves
# Needs GNU Wget (with SSL support) or cURL to be installed.
# default: "0" do not use HTTPS
option use_https "0"
# if using HTTPS (see above) the transfer program tries to verify
# the providers server certificate. For verification there needs to be
# the counterpart on this machine. Specify the path or path/file where
# the transfer program can find them. (might need package CA-certificates)
# if you don't want to verify servers certificate (insecure) you should
# this parameter to "IGNORE" (in capital letters)
# default: "/etc/cacert" path where CA-certificate package is installed
option cacert "/etc/cacert"
###########
# for logging and control if everything work fine you can get information inside
# system log . Critical Errors are always send to system log.
# You can define which information you like to log
# 1 == info, notice, warning, errors
# 2 == notice, warning, errors
# 3 == warning, errors
# 4 == errors
# default: "0" off
option use_syslog "0"
###########
# for logging and control if everything work fine you can get information inside
# log file. You find the file per default in /var/log/ddns/[sectionname].log
# The path can be modified for all log files in ddns.global section (see above)
# default: "1" on
option use_logfile "1"
########### Advanced settings #####################
###########
# you need to specify how ddns-scripts should detect you current local ip.
# the ip_source could be set to "network", "web", "interface" or "script"
# the parameters below specifying the additional information needed for
# the corresponding ip_spource configuration
# default: "network"
# ip_source "network" additional uses option ip_network and detects the
# current local ip on network as defined in /etc/config/network
# default: "wan" using IPv4
# default: "wan6" using IPv6
option ip_source "network"
option ip_network "wan"
# ip_source "web" additional uses option ip_url and detects the current
# local ip from special web sides that response with the ip address of
# calling host. If you are behind a firewall/NAT this is the best option
# since none of the local networks or interfaces will have the external ip.
# default: "http://checkip.dyndns.com" using IPv4
# default: "http://checkipv6.dyndns.com" using IPv6
# option ip_source "web"
# option ip_url "http://checkip.dyndns.com"
# ip_source "interface" additional uses option ip_interface
# ip_source "interface" uses one of the locally installed physical interfaces
# to detect independent from network they configured to.
# default: none
# option ip_source "interface"
# option ip_interface "eth1"
# ip_source "script" additional uses option ip_script
# it's useful if you want to write your own script to detect the
# current local ip. put full path into ip_script option.
# The script must be executable.
# default: none
# option ip_source "script"
# option ip_script ""
###########
# force_ipversion option will set the "-4" respectively "-6" parameter
# on command line of transfer and DNS lookup program.
# So the whole communication uses the selected IP version between both ends.
# needs GNU Wget or cURL installed for transfer and
# BIND's host for DNS lookup.
# default: "0" disabled
option force_ipversion "0"
###########
# normally the current (in the internet) registered ip is detected using the
# local defined name lookup policies (i.e. /etc/resolve.conf etc.)
# Specify here a DNS server to use instead of the defaults.
# you can use hostname or ip address
# IPv6 address must be in squared brackets "[...]"
# i.e. "google-public-dns-a.google.com"
# default: none
# option dns_server "google-public-dns-a.google.com"
# By default every DNS call is made via UDP protocol
# Some internet provider offer modems that cache UDP DNS requests.
# They also redirect calls to external servers to local.
# To force the usage of TCP for DNS requests enable this option
# Needs BIND's host program be installed
# default: "0" disabled
# option force_dnstcp "0"
###########
# If a Proxy is need to access HTTP/HTTPS pages on the WEB
# it can be configured here also for sending updates to the
# DDNS provider. If you configured use_https='1' above, you
# need to setup your HTTPS proxy here, otherwise your
# HTTP proxy. !!! You should not detect your current IP
# ip_source='web' (see above) because this request is also
# send via the configured proxy !!!
# Syntax: [user:password@]proxy:port !port is required !
# default: none
# option proxy ''
########### Timer settings ########################
###########
# defines the time interval to check if local IP has changed
# After the first start and first update send, the system will
# wait this time before verify if update was successful send.
# !!! checks below 5 minutes make no sense because the Internet
# needs about 5-10 minutes to sync an IP-change to all DNS servers !!!
# accepted unit entry’s: 'seconds' 'minutes' 'hours' 'days'
# minimum 5 minutes == 300 seconds
# default 10 minutes
option check_interval '10'
option check_unit 'minutes'
###########
# force to send an update to service provider, if no change was detected.
# consult DDNS providers documentation if your DDNS entry might timeout.
# accepted unit entry’s: 'seconds' 'minutes' 'hours' 'days'
# minimum needs to be greater or equal check interval (see above)
# A special setting of '0' is allowed, which forces the script to run once.
# It sends an update, verify if update was accepted by DNS
# (retry if not) and finish. Useful if you want to start by your own (i.e. cron)
# default 3 days == 72 hours
option force_interval '72'
option force_unit 'hours'
###########
# if error happen on detecting, sending or updating the
# script will retry the relevant action for retry_count times
# before stopping script execution.
# default: 5
option retry_count '5'
###########
# if error happen on detecting, sending or updating the
# script will retry the relevant action.
# here you define the time to wait before retry is started
# accepted unit entry’s: 'seconds' 'minutes' 'hours' 'days'
# default: 60 seconds
option retry_interval '60'
option retry_unit 'seconds'

34
net/ddns-scripts/files/usr/lib/ddns/create_cert_hashes.sh Normal file
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@ -0,0 +1,34 @@
#!/bin/sh
#
#set -vx
[ -d /etc/ssl/certs ] || {
echo "CA-Certificates not istalled - please install first"
exit 1
}
NUMCERT=$(find /etc/ssl/certs -name *.crt 2>/dev/null | wc -l)
NUMLINK=$(find /etc/ssl/certs -type l 2>/dev/null | wc -l)
[ $NUMLINK -gt 0 ] && {
echo "File-Links already exist. Exiting"
exit 0
}
[ -f /usr/bin/openssl ] && OPENSSL="EXIST"
[ -z "$OPENSSL" ] && {
opkg update || exit 1
opkg install openssl-util 2>/dev/null
}
for CERTFILE in `ls -1 $(1)/etc/ssl/certs`; do \
HASH=`openssl x509 -hash -noout -in /etc/ssl/certs/$CERTFILE`
SUFFIX=0
while [ -h "/etc/ssl/certs/$HASH.$SUFFIX" ]; do
let "SUFFIX += 1"
done
ln -s "$CERTFILE" "/etc/ssl/certs/$HASH.$SUFFIX"
echo "link $HASH.$SUFFIX created for $CERTFILE"
done
[ -z "$OPENSSL" ] && opkg remove --force-remove --autoremove openssl-util 2>/dev/null

779
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_functions.sh
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@ -1,144 +1,715 @@
# /usr/lib/dynamic_dns/dynamic_dns_functions.sh #!/bin/sh
# /usr/lib/ddns/dynamic_dns_functions.sh
# #
# Written by Eric Paul Bishop, Janary 2008 # Original written by Eric Paul Bishop, January 2008
# Distributed under the terms of the GNU General Public License (GPL) version 2.0 # Distributed under the terms of the GNU General Public License (GPL) version 2.0
# # (Loosely) based on the script on the one posted by exobyte in the forums here:
# This script is (loosely) based on the one posted by exobyte in the forums here:
# http://forum.openwrt.org/viewtopic.php?id=14040 # http://forum.openwrt.org/viewtopic.php?id=14040
#
# extended and partial rewritten by Christian Schoenebeck in August 2014 to support:
# - IPv6 DDNS services
# - setting DNS Server to retrieve current IP including TCP transport
# - Proxy Server to send out updates or retrieving WEB based IP detection
# - force_interval=0 to run once (usefull for cron jobs etc.)
# - the usage of BIND's host instead of BusyBox's nslookup if installed (DNS via TCP)
# - extended Verbose Mode and log file support for better error detection
#
# function __timeout
# copied from http://www.ict.griffith.edu.au/anthony/software/timeout.sh
# @author Anthony Thyssen 6 April 2011
#
# variables in small chars are read from /etc/config/ddns
# variables in big chars are defined inside these scripts as global vars
# variables in big chars beginning with "__" are local defined inside functions only
#set -vx #script debugger
. /lib/functions.sh . /lib/functions.sh
. /lib/functions/network.sh . /lib/functions/network.sh
# GLOBAL VARIABLES #
SECTION_ID="" # hold config's section name
VERBOSE_MODE=1 # default mode is log to console, but easily changed with parameter
LUCI_HELPER="" # set by dynamic_dns_lucihelper.sh, if filled supress all error logging
#loads all options for a given package and section PIDFILE="" # pid file
#also, sets all_option_variables to a list of the variable names UPDFILE="" # store UPTIME of last update
# directory to store run information to.
RUNDIR=$(uci -q get ddns.global.run_dir) || RUNDIR="/var/run/ddns"
# NEW # directory to store log files
LOGDIR=$(uci -q get ddns.global.log_dir) || LOGDIR="/var/log/ddns"
LOGFILE="" # NEW # logfile can be enabled as new option
# number of lines to before rotate logfile
LOGLINES=$(uci -q get ddns.global.log_lines) || LOGLINES=250
CHECK_SECONDS=0 # calculated seconds out of given
FORCE_SECONDS=0 # interval and unit
RETRY_SECONDS=0 # in configuration
OLD_PID=0 # Holds the PID of already running process for the same config section
LAST_TIME=0 # holds the uptime of last successful update
CURR_TIME=0 # holds the current uptime
NEXT_TIME=0 # calculated time for next FORCED update
EPOCH_TIME=0 # seconds since 1.1.1970 00:00:00
REGISTERED_IP="" # holds the IP read from DNS
LOCAL_IP="" # holds the local IP read from the box
ERR_LAST=0 # used to save $? return code of program and function calls
ERR_LOCAL_IP=0 # error counter on getting local ip
ERR_REG_IP=0 # error counter on getting DNS registered ip
ERR_SEND=0 # error counter on sending update to DNS provider
ERR_UPDATE=0 # error counter on different local and registered ip
# format to show date information in log and luci-app-ddns default ISO 8601 format
DATE_FORMAT=$(uci -q get ddns.global.date_format) || DATE_FORMAT="%F %R"
DATE_PROG="date +'$DATE_FORMAT'"
# regular expression to detect IPv4 / IPv6
# IPv4 0-9 1-3x "." 0-9 1-3x "." 0-9 1-3x "." 0-9 1-3x
IPV4_REGEX="[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}"
# IPv6 ( ( 0-9a-f 1-4char ":") min 1x) ( ( 0-9a-f 1-4char )optional) ( (":" 0-9a-f 1-4char ) min 1x)
IPV6_REGEX="\(\([0-9A-Fa-f]\{1,4\}:\)\{1,\}\)\(\([0-9A-Fa-f]\{1,4\}\)\{0,1\}\)\(\(:[0-9A-Fa-f]\{1,4\}\)\{1,\}\)"
# loads all options for a given package and section
# also, sets all_option_variables to a list of the variable names
# $1 = ddns, $2 = SECTION_ID
load_all_config_options() load_all_config_options()
{ {
pkg_name="$1" local __PKGNAME="$1"
section_id="$2" local __SECTIONID="$2"
local __VAR
local __ALL_OPTION_VARIABLES=""
ALL_OPTION_VARIABLES="" # this callback loads all the variables in the __SECTIONID section when we do
# this callback loads all the variables # config_load. We need to redefine the option_cb for different sections
# in the section_id section when we do # so that the active one isn't still active after we're done with it. For reference
# config_load. We need to redefine # the $1 variable is the name of the option and $2 is the name of the section
# 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() config_cb()
{ {
if [ ."$2" = ."$section_id" ]; then if [ ."$2" = ."$__SECTIONID" ]; then
option_cb() option_cb()
{ {
ALL_OPTION_VARIABLES="$ALL_OPTION_VARIABLES $1" __ALL_OPTION_VARIABLES="$__ALL_OPTION_VARIABLES $1"
} }
else else
option_cb() { return 0; } option_cb() { return 0; }
fi fi
} }
config_load "$__PKGNAME"
config_load "$pkg_name" # Given SECTION_ID not found so no data, so return 1
for var in $ALL_OPTION_VARIABLES [ -z "$__ALL_OPTION_VARIABLES" ] && return 1
for __VAR in $__ALL_OPTION_VARIABLES
do do
config_get "$var" "$section_id" "$var" config_get "$__VAR" "$__SECTIONID" "$__VAR"
done done
return 0
} }
# starts updater script for all given sections or only for the one given
get_current_ip() # $1 = interface (Optional: when given only scripts are started
{ # configured for that interface)
#if ip source is not defined, assume we want to get ip from wan
if [ "$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() start_daemon_for_all_ddns_sections()
{ {
local event_interface="$1" local __EVENTIF="$1"
local __SECTIONS=""
local __SECTIONID=""
local __IFACE=""
SECTIONS=""
config_cb() config_cb()
{ {
SECTIONS="$SECTIONS $2" # only look for section type "service", ignore everything else
[ "$1" == "service" ] && __SECTIONS="$__SECTIONS $2"
} }
config_load "ddns" config_load "ddns"
for section in $SECTIONS for __SECTIONID in $__SECTIONS
do do
local iface config_get __IFACE "$__SECTIONID" interface "wan"
config_get iface "$section" interface "wan" [ -z "$__EVENTIF" -o "$__IFACE" = "$__EVENTIF" ] || continue
[ -z "$event_interface" -o "$iface" = "$event_interface" ] || continue /usr/lib/ddns/dynamic_dns_updater.sh $__SECTIONID 0 > /dev/null 2>&1 &
/usr/lib/ddns/dynamic_dns_updater.sh $section 0 > /dev/null 2>&1 &
done done
} }
monotonic_time() verbose_echo()
{ {
local uptime [ -n "$LUCI_HELPER" ] && return # nothing to report when used by LuCI helper script
read uptime < /proc/uptime [ $VERBOSE_MODE -gt 0 ] && echo -e " $*"
echo "${uptime%%.*}" if [ ${use_logfile:-0} -eq 1 -o $VERBOSE_MODE -gt 1 ]; then
[ -d $LOGDIR ] || mkdir -p -m 755 $LOGDIR
echo -e " $*" >> $LOGFILE
# VERBOSE_MODE > 1 then NO loop so NO truncate log to $LOGLINES lines
[ $VERBOSE_MODE -gt 1 ] || sed -i -e :a -e '$q;N;'$LOGLINES',$D;ba' $LOGFILE
fi
return
}
syslog_info(){
[ $use_syslog -eq 1 ] && logger -p user.info -t ddns-scripts[$$] "$SECTION_ID: $*"
return
}
syslog_notice(){
[ $use_syslog -ge 1 -a $use_syslog -le 2 ] && logger -p user.notice -t ddns-scripts[$$] "$SECTION_ID: $*"
return
}
syslog_warn(){
[ $use_syslog -ge 1 -a $use_syslog -le 3 ] && logger -p user.warn -t ddns-scripts[$$] "$SECTION_ID: $*"
return
}
syslog_err(){
[ $use_syslog -ge 1 ] && logger -p user.err -t ddns-scripts[$$] "$SECTION_ID: $*"
return
}
critical_error() {
[ -n "$LUCI_HELPER" ] && return # nothing to report when used by LuCI helper script
verbose_echo "\n CRITICAL ERROR =: $* - EXITING\n"
[ $VERBOSE_MODE -eq 0 ] && echo -e "\n$SECTION_ID: CRITICAL ERROR - $* - EXITING\n"
logger -t ddns-scripts[$$] -p user.crit "$SECTION_ID: CRITICAL ERROR - $* - EXITING"
exit 1 # critical error -> leave here
}
# extract update_url for given DDNS Provider from
# file /usr/lib/ddns/services for IPv4 or from
# file /usr/lib/ddns/services_ipv6 for IPv6
get_service_url() {
# $1 Name of Variable to store url to
local __LINE __FILE __NAME __URL __SERVICES
local __OLD_IFS=$IFS
local __NEWLINE_IFS='
' #__NEWLINE_IFS
__FILE="/usr/lib/ddns/services" # IPv4
[ $use_ipv6 -ne 0 ] && __FILE="/usr/lib/ddns/services_ipv6" # IPv6
#remove any lines not containing data, and then make sure fields are enclosed in double quotes
__SERVICES=$(cat $__FILE | grep "^[\t ]*[^#]" | \
awk ' gsub("\x27", "\"") { if ($1~/^[^\"]*$/) $1="\""$1"\"" }; { if ( $NF~/^[^\"]*$/) $NF="\""$NF"\"" }; { print $0 }')
IFS=$__NEWLINE_IFS
for __LINE in $__SERVICES
do
#grep out proper parts of data and use echo to remove quotes
__NAME=$(echo $__LINE | grep -o "^[\t ]*\"[^\"]*\"" | xargs -r -n1 echo)
__URL=$(echo $__LINE | grep -o "\"[^\"]*\"[\t ]*$" | xargs -r -n1 echo)
if [ "$__NAME" = "$service_name" ]; then
break # found so leave for loop
fi
done
IFS=$__OLD_IFS
eval "$1='$__URL'"
return 0
}
get_seconds() {
# $1 Name of Variable to store result in
# $2 Number and
# $3 Unit of time interval
case "$3" in
"days" ) eval "$1=$(( $2 * 86400 ))";;
"hours" ) eval "$1=$(( $2 * 3600 ))";;
"minutes" ) eval "$1=$(( $2 * 60 ))";;
* ) eval "$1=$2";;
esac
return 0
}
__timeout() {
# copied from http://www.ict.griffith.edu.au/anthony/software/timeout.sh
# only did the folloing changes
# - commented out "#!/bin/bash" and usage section
# - replace exit by return for usage as function
# - some reformating
#
# timeout [-SIG] time [--] command args...
#
# Run the given command until completion, but kill it if it runs too long.
# Specifically designed to exit immediatally (no sleep interval) and clean up
# nicely without messages or leaving any extra processes when finished.
#
# Example use
# timeout 5 countdown
#
###
#
# Based on notes in my "Shell Script Hints", section "Command Timeout"
# http://www.ict.griffith.edu.au/~anthony/info/shell/script.hints
#
# This script uses a lot of tricks to terminate both the background command,
# the timeout script, and even the sleep process. It also includes trap
# commands to prevent sub-shells reporting expected "Termination Errors".
#
# It took years of occasional trials, errors and testing to get a pure bash
# timeout command working as well as this does.
#
###
#
# Anthony Thyssen 6 April 2011
#
# PROGNAME=$(type $0 | awk '{print $3}') # search for executable on path
# PROGDIR=$(dirname $PROGNAME) # extract directory of program
# PROGNAME=$(basename $PROGNAME) # base name of program
# output the script comments as docs
# Usage() {
# echo >&2 "$PROGNAME:" "$@"
# sed >&2 -n '/^###/q; /^#/!q; s/^#//; s/^ //; 3s/^/Usage: /; 2,$ p' "$PROGDIR/$PROGNAME"
# exit 10;
# }
SIG=-TERM
while [ $# -gt 0 ]; do
case "$1" in
--)
# forced end of user options
shift;
break ;;
# -\?|--help|--doc*)
# Usage ;;
[0-9]*)
TIMEOUT="$1" ;;
-*)
SIG="$1" ;;
*)
# unforced end of user options
break ;;
esac
shift # next option
done
# run main command in backgrouds and get its pid
"$@" &
command_pid=$!
# timeout sub-process abort countdown after ABORT seconds! also backgrounded
sleep_pid=0
(
# cleanup sleep process
trap 'kill -TERM $sleep_pid; return 1' 1 2 3 15
# sleep timeout period in background
sleep $TIMEOUT &
sleep_pid=$!
wait $sleep_pid
# Abort the command
kill $SIG $command_pid >/dev/null 2>&1
return 1
) &
timeout_pid=$!
# Wait for main command to finished or be timed out
wait $command_pid
status=$?
# Clean up timeout sub-shell - if it is still running!
kill $timeout_pid 2>/dev/null
wait $timeout_pid 2>/dev/null
# Uncomment to check if a LONG sleep still running (no sleep should be)
# sleep 1
# echo "-----------"
# /bin/ps j # uncomment to show if abort "sleep" is still sleeping
return $status
}
__verify_host_port() {
# $1 Host/IP to verify
# $2 Port to verify
local __HOST=$1
local __PORT=$2
local __TMP __IP __IPV4 __IPV6 __RUNPROG __ERRPROG __ERR
# return codes
# 1 system specific error
# 2 nslookup error
# 3 nc (netcat) error
# 4 unmatched IP version
__RUNPROG="nslookup $__HOST 2>/dev/null"
__ERRPROG="nslookup $__HOST 2>&1"
verbose_echo " resolver prog =: '$__RUNPROG'"
__TMP=$(eval $__RUNPROG) # test if nslookup runs without errors
__ERR=$?
# command error
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: BusyBox nslookup Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "DNS Resolver Error - BusyBox nslookup Error: '$__ERR'"
return 2
} || {
# we need to run twice because multi-line output needs to be directly piped to grep because
# pipe returns return code of last prog in pipe but we need errors from nslookup command
__IPV4=$(eval $__RUNPROG | sed '1,2d' | grep -o "Name:\|Address.*" | grep -m 1 -o "$IPV4_REGEX")
__IPV6=$(eval $__RUNPROG | sed '1,2d' | grep -o "Name:\|Address.*" | grep -m 1 -o "$IPV6_REGEX")
}
# check IP version if forced
if [ $force_ipversion -ne 0 ]; then
[ $use_ipv6 -eq 0 -a -z "$__IPV4" ] && return 4
[ $use_ipv6 -eq 1 -a -z "$__IPV6" ] && return 4
fi
# verify nc command
# busybox nc compiled without -l option "NO OPT l!" -> critical error
nc --help 2>&1 | grep -iq "NO OPT l!" && \
critical_error "Busybox nc: netcat compiled with errors"
# busybox nc compiled with extensions
nc --help 2>&1 | grep -q "\-w" && __NCEXT="TRUE"
# connectivity test
# run busybox nc to HOST PORT
# busybox might be compiled with "FEATURE_PREFER_IPV4_ADDRESS=n"
# then nc will try to connect via IPv6 if there is an IPv6 availible for host
# not worring if there is an IPv6 wan address
# so if not "forced_ipversion" to use ipv6 then connect test via ipv4 if availible
[ $force_ipversion -ne 0 -a $use_ipv6 -ne 0 -o -z "$__IPV4" ] && {
# force IPv6
__IP=$__IPV6
} || __IP=$__IPV4
if [ -n "$__NCEXT" ]; then # nc compiled with extensions (timeout support)
__RUNPROG="nc -w 1 $__IP $__PORT </dev/null >/dev/null 2>&1"
__ERRPROG="nc -vw 1 $__IP $__PORT </dev/null 2>&1"
verbose_echo " connect prog =: '$__RUNPROG'"
eval $__RUNPROG
__ERR=$?
[ $__ERR -eq 0 ] && return 0
verbose_echo "\n!!!!!!!!! ERROR =: BusyBox nc Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "host verify Error - BusyBox nc Error: '$__ERR'"
return 3
else # nc compiled without extensions (no timeout support)
__RUNPROG="__timeout 2 -- nc $__IP $__PORT </dev/null >/dev/null 2>&1"
verbose_echo " connect prog =: '$__RUNPROG'"
eval $__RUNPROG
__ERR=$?
[ $__ERR -eq 0 ] && return 0
verbose_echo "\n!!!!!!!!! ERROR =: BusyBox nc Error '$__ERR' (timeout)"
syslog_err "host verify Error - BusyBox nc Error: '$__ERR' (timeout)"
return 3
fi
}
verify_dns() {
# $1 DNS server to verify
# we need DNS server to verify otherwise exit with ERROR 1
[ -z "$1" ] && return 1
# DNS uses port 53
__verify_host_port "$1" "53"
}
verify_proxy() {
# $1 Proxy-String to verify
# complete entry user:password@host:port
# host and port only host:port
# host only host unsupported
# IPv4 address instead of host 123.234.234.123
# IPv6 address instead of host [xxxx:....:xxxx] in square bracket
local __TMP __HOST __PORT
# we need Proxy-Sting to verify otherwise exit with ERROR 1
[ -z "$1" ] && return 1
# try to split user:password "@" host:port
__TMP=$(echo $1 | awk -F "@" '{print $2}')
# no "@" found - only host:port is given
[ -z "$__TMP" ] && __TMP="$1"
# now lets check for IPv6 address
__HOST=$(echo $__TMP | grep -m 1 -o "$IPV6_REGEX")
# IPv6 host address found read port
if [ -n "$__HOST" ]; then
# IPv6 split at "]:"
__PORT=$(echo $__TMP | awk -F "]:" '{print $2}')
else
__HOST=$(echo $__TMP | awk -F ":" '{print $1}')
__PORT=$(echo $__TMP | awk -F ":" '{print $2}')
fi
# No Port detected ERROR 5
[ -z "$__PORT" ] && return 5
__verify_host_port "$__HOST" "$__PORT"
}
__do_transfer() {
# $1 # Variable to store Answer of transfer
# $2 # URL to use
local __URL="$2"
local __ERR=0
local __PROG __RUNPROG __ERRPROG __DATA
# lets prefer GNU Wget because it does all for us - IPv4/IPv6/HTTPS/PROXY/force IP version
if /usr/bin/wget --version 2>&1 | grep -q "\+ssl"; then
__PROG="/usr/bin/wget -t 2 -O -" # standard output only 2 retrys on error
# force ip version to use
if [ $force_ipversion -eq 1 ]; then
[ $use_ipv6 -eq 0 ] && __PROG="$__PROG -4" || __PROG="$__PROG -6" # force IPv4/IPv6
fi
# set certificate parameters
if [ $use_https -eq 1 ]; then
if [ "$cacert" = "IGNORE" ]; then # idea from Ticket #15327 to ignore server cert
__PROG="$__PROG --no-check-certificate"
elif [ -f "$cacert" ]; then
__PROG="$__PROG --ca-certificate=${cacert}"
elif [ -d "$cacert" ]; then
__PROG="$__PROG --ca-directory=${cacert}"
else # exit here because it makes no sense to start loop
critical_error "Wget: No valid certificate(s) found for running HTTPS"
fi
fi
# disable proxy if no set (there might be .wgetrc or .curlrc or wrong environment set)
[ -z "$proxy" ] && __PROG="$__PROG --no-proxy"
__RUNPROG="$__PROG -q '$__URL' 2>/dev/null" # do transfer with "-q" to suppress not needed output
__ERRPROG="$__PROG -d '$__URL' 2>&1" # do transfer with "-d" for debug mode
verbose_echo " transfer prog =: $__RUNPROG"
__DATA=$(eval $__RUNPROG)
__ERR=$?
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: GNU Wget Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "Communication Error - GNU Wget Error: '$__ERR'"
return 1
}
# 2nd choice is cURL IPv4/IPv6/HTTPS
# libcurl might be compiled without Proxy Support (default in trunk)
elif [ -x /usr/bin/curl ]; then
__PROG="/usr/bin/curl"
# force ip version to use
if [ $force_ipversion -eq 1 ]; then
[ $use_ipv6 -eq 0 ] && __PROG="$__PROG -4" || __PROG="$__PROG -6" # force IPv4/IPv6
fi
# set certificate parameters
if [ $use_https -eq 1 ]; then
if [ "$cacert" = "IGNORE" ]; then # idea from Ticket #15327 to ignore server cert
__PROG="$__PROG --insecure" # but not empty better to use "IGNORE"
elif [ -f "$cacert" ]; then
__PROG="$__PROG --cacert $cacert"
elif [ -d "$cacert" ]; then
__PROG="$__PROG --capath $cacert"
else # exit here because it makes no sense to start loop
critical_error "cURL: No valid certificate(s) found for running HTTPS"
fi
fi
# disable proxy if no set (there might be .wgetrc or .curlrc or wrong environment set)
# or check if libcurl compiled with proxy support
if [ -z "$proxy" ]; then
__PROG="$__PROG --noproxy '*'"
else
# if libcurl has no proxy support and proxy should be used then force ERROR
# libcurl currently no proxy support by default
grep -iq all_proxy /usr/lib/libcurl.so* || \
critical_error "cURL: libcurl compiled without Proxy support"
fi
__RUNPROG="$__PROG -q '$__URL' 2>/dev/null" # do transfer with "-s" to suppress not needed output
__ERRPROG="$__PROG -v '$__URL' 2>&1" # do transfer with "-v" for verbose mode
verbose_echo " transfer prog =: $__RUNPROG"
__DATA=$(eval $__RUNPROG)
__ERR=$?
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: cURL Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "Communication Error - cURL Error: '$__ERR'"
return 1
}
# busybox Wget (did not support neither IPv6 nor HTTPS)
elif [ -x /usr/bin/wget ]; then
__PROG="/usr/bin/wget -O -"
# force ip version not supported
[ $force_ipversion -eq 1 ] && \
critical_error "BusyBox Wget: can not force IP version to use"
# https not supported
[ $use_https -eq 1 ] && \
critical_error "BusyBox Wget: no HTTPS support"
# disable proxy if no set (there might be .wgetrc or .curlrc or wrong environment set)
[ -z "$proxy" ] && __PROG="$__PROG -Y off"
__RUNPROG="$__PROG -q '$__URL' 2>/dev/null" # do transfer with "-q" to suppress not needed output
__ERRPROG="$__PROG '$__URL' 2>&1"
verbose_echo " transfer prog =: $__RUNPROG"
__DATA=$(eval $__RUNPROG)
__ERR=$?
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: BusyBox Wget Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "Communication Error - BusyBox Wget Error: '$__ERR'"
return 1
}
else
critical_error "Program not found - Neither 'Wget' nor 'cURL' installed or executable"
fi
eval "$1='$__DATA'"
return 0
}
send_update() {
# $1 # IP to set at DDNS service provider
local __IP __URL __ANSWER __ERR
# verify given IP
[ $use_ipv6 -eq 0 ] && __IP=$(echo $1 | grep -v -E "(^0|^10|^127|^172|^192)") # no private IPv4's
[ $use_ipv6 -eq 1 ] && __IP=$(echo $1 | grep "^[0-9a-eA-E]") # no IPv6 addr starting with fxxx of with ":"
[ -z "$__IP" ] && critical_error "Invalid or no IP '$1' given"
# do replaces in URL
__URL=$(echo $update_url | sed -e "s#\[USERNAME\]#$username#g" -e "s#\[PASSWORD\]#$password#g" \
-e "s#\[DOMAIN\]#$domain#g" -e "s#\[IP\]#$__IP#g")
[ $use_https -ne 0 ] && __URL=$(echo $__URL | sed -e 's#^http:#https:#')
__do_transfer __ANSWER "$__URL"
__ERR=$?
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: Error sending update to DDNS Provider\n"
return 1
}
verbose_echo " update send =: DDNS Provider answered\n$__ANSWER"
return 0
}
get_local_ip () {
# $1 Name of Variable to store local IP (LOCAL_IP)
local __RUNPROG __IP __URL __ANSWER
case $ip_source in
network )
# set correct program
[ $use_ipv6 -eq 0 ] && __RUNPROG="network_get_ipaddr" \
|| __RUNPROG="network_get_ipaddr6"
$__RUNPROG __IP "$ip_network"
verbose_echo " local ip =: '$__IP' detected on network '$ip_network'"
;;
interface )
if [ $use_ipv6 -eq 0 ]; then
__IP=$(ifconfig $ip_interface | awk '
/Bcast.*Mask/ { # Filter IPv4
# inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
$1=""; # remove inet
$3=""; # remove Bcast: ...
$4=""; # remove Mask: ...
FS=":"; # separator ":"
$0=$0; # reread to activate separator
$1=""; # remove addr
FS=" "; # set back separator to default " "
$0=$0; # reread to activate separator (remove whitespaces)
print $1; # print IPv4 addr
}'
)
else
__IP=$(ifconfig $ip_interface | awk '
/inet6/ && /: [0-9a-eA-E]/ && !/\/128/ { # Filter IPv6 exclude fxxx and /128 prefix
# inet6 addr: 2001:db8::xxxx:xxxx/32 Scope:Global
FS="/"; # separator "/"
$0=$0; # reread to activate separator
$2=""; # remove everything behind "/"
FS=" "; # set back separator to default " "
$0=$0; # reread to activate separator
print $3; # print IPv6 addr
}'
)
fi
verbose_echo " local ip =: '$__IP' detected on interface '$ip_interface'"
;;
script )
# get ip from script
__IP=$($ip_script)
verbose_echo " local ip =: '$__IP' detected via script '$ip_script'"
;;
* )
for __URL in $ip_url; do
__do_transfer __ANSWER "$__URL"
[ -n "$__IP" ] && break # Answer detected, leave for loop
done
# use correct regular expression
[ $use_ipv6 -eq 0 ] \
&& __IP=$(echo "$__ANSWER" | grep -m 1 -o "$IPV4_REGEX") \
|| __IP=$(echo "$__ANSWER" | grep -m 1 -o "$IPV6_REGEX")
verbose_echo " local ip =: '$__IP' detected via web at '$__URL'"
;;
esac
# if NO IP was found
[ -z "$__IP" ] && return 1
eval "$1='$__IP'"
return 0
}
get_registered_ip() {
# $1 Name of Variable to store public IP (REGISTERED_IP)
local __IP __REGEX __PROG __RUNPROG __ERRPROG __ERR
# return codes
# 1 no IP detected
# set correct regular expression
[ $use_ipv6 -eq 0 ] && __REGEX="$IPV4_REGEX" || __REGEX="$IPV6_REGEX"
if [ -x /usr/bin/host ]; then # otherwise try to use BIND host
__PROG="/usr/bin/host"
[ $use_ipv6 -eq 0 ] && __PROG="$__PROG -t A" || __PROG="$__PROG -t AAAA"
if [ $force_ipversion -eq 1 ]; then # force IP version
[ $use_ipv6 -eq 0 ] && __PROG="$__PROG -4" || __PROG="$__PROG -6"
fi
[ $force_dnstcp -eq 1 ] && __PROG="$__PROG -T" # force TCP
__RUNPROG="$__PROG $domain $dns_server 2>/dev/null"
__ERRPROG="$__PROG -v $domain $dns_server 2>&1"
verbose_echo " resolver prog =: $__RUNPROG"
__IP=$(eval $__RUNPROG)
__ERR=$?
# command error
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: BIND host Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "DNS Resolver Error - BIND host Error: '$__ERR'"
return 1
} || {
# we need to run twice because multi-line output needs to be directly piped to grep because
# pipe returns return code of last prog in pipe but we need errors from host command
__IP=$(eval $__RUNPROG | grep "^$domain" | grep -m 1 -o "$__REGEX")
}
elif [ -x /usr/bin/nslookup ]; then # last use BusyBox nslookup
[ $force_ipversion -ne 0 -o $force_dnstcp -ne 0 ] && \
critical_error "nslookup - no support to 'force IP Version' or 'DNS over TCP'"
__RUNPROG="nslookup $domain $dns_server 2>/dev/null"
__ERRPROG="nslookup $domain $dns_server 2>&1"
verbose_echo " resolver prog =: $__RUNPROG"
__IP=$(eval $__RUNPROG)
__ERR=$?
# command error
[ $__ERR -gt 0 ] && {
verbose_echo "\n!!!!!!!!! ERROR =: BusyBox nslookup Error '$__ERR'\n$(eval $__ERRPROG)\n"
syslog_err "DNS Resolver Error - BusyBox nslookup Error: '$__ERR'"
return 1
} || {
# we need to run twice because multi-line output needs to be directly piped to grep because
# pipe returns return code of last prog in pipe but we need errors from nslookup command
__IP=$(eval $__RUNPROG | sed '1,2d' | grep -o "Name:\|Address.*" | grep -m 1 -o "$__REGEX")
}
else # there must be an error
critical_error "No program found to request public registered IP"
fi
verbose_echo " resolved ip =: '$__IP'"
# if NO IP was found
[ -z "$__IP" ] && return 1
eval "$1='$__IP'"
return 0
}
get_uptime() {
# $1 Variable to store result in
local __UPTIME=$(cat /proc/uptime)
eval "$1='${__UPTIME%%.*}'"
} }

649
net/ddns-scripts/files/usr/lib/ddns/dynamic_dns_updater.sh
View file

@ -1,360 +1,399 @@
#!/bin/sh #!/bin/sh
# /usr/lib/dynamic_dns/dynamic_dns_updater.sh # /usr/lib/ddns/dynamic_dns_updater.sh
# #
# Written by Eric Paul Bishop, Janary 2008 # Original written by Eric Paul Bishop, January 2008
# Distributed under the terms of the GNU General Public License (GPL) version 2.0 # Distributed under the terms of the GNU General Public License (GPL) version 2.0
# # (Loosely) based on the script on the one posted by exobyte in the forums here:
# This script is (loosely) based on the one posted by exobyte in the forums here:
# http://forum.openwrt.org/viewtopic.php?id=14040 # http://forum.openwrt.org/viewtopic.php?id=14040
# #
# extended and partial rewritten by Christian Schoenebeck in August 2014 to support:
. /usr/lib/ddns/dynamic_dns_functions.sh # - IPv6 DDNS services
# - DNS Server to retrieve registered IP including TCP transport
# - Proxy Server to send out updates
service_id=$1 # - force_interval=0 to run once
if [ -z "$service_id" ] # - the usage of BIND's host command instead of BusyBox's nslookup if installed
then # - extended Verbose Mode and log file support for better error detection
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 # variables in small chars are read from /etc/config/ddns
# options, which is a much more flexible solution. # variables in big chars are defined inside these scripts as global vars
# variables in big chars beginning with "__" are local defined inside functions only
#set -vx #script debugger
[ $# -lt 1 -o -n "${2//[0-3]/}" -o ${#2} -gt 1 ] && {
echo -e "\n USAGE:"
echo -e " $0 [SECTION] [VERBOSE_MODE]\n"
echo " [SECTION] - service section as defined in /etc/config/ddns"
echo " [VERBOSE_MODE] - '0' NO output to console"
echo " '1' output to console"
echo " '2' output to console AND logfile"
echo " + run once WITHOUT retry on error"
echo " '3' output to console AND logfile"
echo " + run once WITHOUT retry on error"
echo -e " + NOT sending update to DDNS service\n"
exit 1
}
. /usr/lib/ddns/dynamic_dns_functions.sh # global vars are also defined here
SECTION_ID="$1"
VERBOSE_MODE=${2:-1} #default mode is log to console
# set file names
PIDFILE="$RUNDIR/$SECTION_ID.pid" # Process ID file
UPDFILE="$RUNDIR/$SECTION_ID.update" # last update successful send (system uptime)
LOGFILE="$LOGDIR/$SECTION_ID.log" # log file
# VERBOSE_MODE > 1 delete logfile if exist to create an empty one
# only with this data of this run for easier diagnostic
# new one created by verbose_echo function
[ $VERBOSE_MODE -gt 1 -a -f $LOGFILE ] && rm -f $LOGFILE
################################################################################
# Leave this comment here, to clearly document variable names that are expected/possible
# Use load_all_config_options to load config options, which is a much more flexible solution.
# #
# config_load "ddns"
# config_get <variable> $SECTION_ID <option]>
# #
#config_load "ddns" # defined options (also used as variable):
# #
#config_get enabled $service_id enabled # enable self-explanatory
#config_get service_name $service_id service_name # interface network interface used by hotplug.d i.e. 'wan' or 'wan6'
#config_get update_url $service_id update_url
# #
# service_name Which DDNS service do you use or "custom"
# update_url URL to use to update your "custom" DDNS service
# #
#config_get username $service_id username # domain Your DNS name / replace [DOMAIN] in update_url
#config_get password $service_id password # username Username of your DDNS service account / replace [USERNAME] in update_url
#config_get domain $service_id domain # password Password of your DDNS service account / replace [PASSWORD] in update_url
# #
# use_https use HTTPS to update DDNS service
# cacert file or directory where HTTPS can find certificates to verify server; 'IGNORE' ignore check of server certificate
# #
#config_get use_https $service_id use_https # use_syslog log activity to syslog
#config_get use_syslog $service_id use_syslog
#config_get cacert $service_id cacert
# #
#config_get ip_source $service_id ip_source # ip_source source to detect current local IP ('network' or 'web' or 'script' or 'interface')
#config_get ip_interface $service_id ip_interface # ip_network local defined network to read IP from i.e. 'wan' or 'wan6'
#config_get ip_network $service_id ip_network # ip_url URL to read local address from i.e. http://checkip.dyndns.com/ or http://checkipv6.dyndns.com/
#config_get ip_url $service_id ip_url # ip_script full path and name of your script to detect local IP
# ip_interface physical interface to use for detecting
# #
#config_get force_interval $service_id force_interval # check_interval check for changes every !!! checks below 10 minutes make no sense because the Internet
#config_get force_unit $service_id force_unit # check_unit 'days' 'hours' 'minutes' !!! needs about 5-10 minutes to sync an IP-change for an DNS entry
# #
#config_get check_interval $service_id check_interval # force_interval force to send an update to your service if no change was detected
#config_get check_unit $service_id check_unit # force_unit 'days' 'hours' 'minutes' !!! force_interval="0" runs this script once for use i.e. with cron
######################################################### #
load_all_config_options "ddns" "$service_id" # retry_interval if error was detected retry in
# retry_unit 'days' 'hours' 'minutes' 'seconds'
# retry_count #NEW# number of retries before scripts stops
#
# use_ipv6 #NEW# detecting/sending IPv6 address
# force_ipversion #NEW# force usage of IPv4 or IPv6 for the whole detection and update communication
# dns_server #NEW# using a non default dns server to get Registered IP from Internet
# force_dnstcp #NEW# force communication with DNS server via TCP instead of default UDP
# proxy #NEW# using a proxy for communication !!! ALSO used to detect local IP via web => return proxy's IP !!!
# use_logfile #NEW# self-explanatory "/var/log/ddns/$SECTION_ID.log"
#
# some functionality needs
# - GNU Wget or cURL installed for sending updates to DDNS service
# - BIND host installed to detect Registered IP
#
################################################################################
# verify and load SECTION_ID is exists
[ "$(uci_get ddns $SECTION_ID)" != "service" ] && {
[ $VERBOSE_MODE -le 1 ] && VERBOSE_MODE=2 # force console out and logfile output
[ -f $LOGFILE ] && rm -f $LOGFILE # clear logfile before first entry
verbose_echo "\n ************** =: ************** ************** **************"
verbose_echo " STARTED =: PID '$$' at $(eval $DATE_PROG)"
verbose_echo " UCI CONFIG =:\n$(uci -q show ddns | grep '=service' | sort)"
critical_error "Service '$SECTION_ID' not defined"
}
load_all_config_options "ddns" "$SECTION_ID"
#some defaults verbose_echo "\n ************** =: ************** ************** **************"
if [ -z "$check_interval" ] verbose_echo " STARTED =: PID '$$' at $(eval $DATE_PROG)"
then syslog_info "Started"
check_interval=600 case $VERBOSE_MODE in
fi 0) verbose_echo " verbose mode =: '0' - run normal, NO console output";;
1) verbose_echo " verbose mode =: '1' - run normal, console mode";;
if [ -z "$retry_interval" ] 2) verbose_echo " verbose mode =: '2' - run once, NO retry on error";;
then 3) verbose_echo " verbose mode =: '3' - run once, NO retry on error, NOT sending update";;
retry_interval=60 *) critical_error "ERROR detecting VERBOSE_MODE '$VERBOSE_MODE'"
fi
if [ -z "$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=$force_interval
;;
* )
#default is hours
force_interval_seconds=$(($force_interval*60*60))
;;
esac esac
verbose_echo " UCI CONFIG =:\n$(uci -q show ddns.$SECTION_ID | sort)"
# set defaults if not defined
[ -z "$enabled" ] && enabled=0
[ -z "$retry_count" ] && retry_count=5
[ -z "$use_syslog" ] && use_syslog=0 # not use syslog
[ -z "$use_https" ] && use_https=0 # not use https
[ -z "$use_logfile" ] && use_logfile=1 # NEW - use logfile by default
[ -z "$use_ipv6" ] && use_ipv6=0 # NEW - use IPv4 by default
[ -z "$force_ipversion" ] && force_ipversion=0 # NEW - default let system decide
[ -z "$force_dnstcp" ] && force_dnstcp=0 # NEW - default UDP
[ -z "$ip_source" ] && ip_source="network"
[ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 0 ] && ip_network="wan" # IPv4: default wan
[ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 1 ] && ip_network="wan6" # IPv6: default wan6
[ "$ip_source" = "web" -a -z "$ip_url" -a $use_ipv6 -eq 0 ] && ip_url="http://checkip.dyndns.com"
[ "$ip_source" = "web" -a -z "$ip_url" -a $use_ipv6 -eq 1 ] && ip_url="http://checkipv6.dyndns.com"
[ "$ip_source" = "interface" -a -z "$ip_interface" ] && ip_interface="eth1"
#compute check interval in seconds # check configuration and enabled state
case "$check_unit" in [ -z "$domain" -o -z "$username" -o -z "$password" ] && critical_error "Service Configuration not correctly configured"
"days" ) [ $enabled -eq 0 ] && critical_error "Service Configuration is disabled"
check_interval_seconds=$(($check_interval*60*60*24))
;;
"hours" )
check_interval_seconds=$(($check_interval*60*60))
;;
"minutes" )
check_interval_seconds=$(($check_interval*60))
;;
"seconds" )
check_interval_seconds=$check_interval
;;
* )
#default is seconds
check_interval_seconds=$check_interval
;;
esac
# verify script if configured and executable
if [ "$ip_source" = "script" ]; then
[ -z "$ip_script" ] && critical_error "No script defined to detect local IP"
[ -x "$ip_script" ] || critical_error "Script to detect local IP not found or not executable"
fi
#compute retry interval in seconds # compute update interval in seconds
case "$retry_unit" in get_seconds CHECK_SECONDS ${check_interval:-10} ${check_unit:-"minutes"} # default 10 min
"days" ) get_seconds FORCE_SECONDS ${force_interval:-72} ${force_unit:-"hours"} # default 3 days
retry_interval_seconds=$(($retry_interval*60*60*24)) get_seconds RETRY_SECONDS ${retry_interval:-60} ${retry_unit:-"seconds"} # default 60 sec
;; verbose_echo "check interval =: $CHECK_SECONDS seconds"
"hours" ) verbose_echo "force interval =: $FORCE_SECONDS seconds"
retry_interval_seconds=$(($retry_interval*60*60)) verbose_echo "retry interval =: $RETRY_SECONDS seconds"
;; verbose_echo " retry counter =: $retry_count times"
"minutes" )
retry_interval_seconds=$(($retry_interval*60))
;;
"seconds" )
retry_interval_seconds=$retry_interval
;;
* )
#default is seconds
retry_interval_seconds=$retry_interval
;;
esac
# determine what update url we're using if a service_name is supplied
verbose_echo "force seconds = $force_interval_seconds" # otherwise update_url is set inside configuration (custom service)
verbose_echo "check seconds = $check_interval_seconds" [ -n "$service_name" ] && get_service_url update_url
[ -z "$update_url" ] && critical_error "no update url found/defined"
#kill old process if it exists & set new pid file #kill old process if it exists & set new pid file
if [ -d /var/run/dynamic_dns ] if [ -d $RUNDIR ]; then
then
#if process is already running, stop it #if process is already running, stop it
if [ -e "/var/run/dynamic_dns/$service_id.pid" ] if [ -e "$PIDFILE" ]; then
then OLD_PID=$(cat $PIDFILE)
old_pid=$(cat /var/run/dynamic_dns/$service_id.pid) ps | grep -q "^[\t ]*$OLD_PID" && {
test_match=$(ps | grep "^[\t ]*$old_pid") verbose_echo " old process =: PID '$OLD_PID'"
verbose_echo "old process id (if it exists) = \"$test_match\"" kill $OLD_PID
if [ -n "$test_match" ] } || verbose_echo "old process id =: PID 'none'"
then else
kill $old_pid verbose_echo "old process id =: PID 'none'"
fi fi
fi
else else
#make dir since it doesn't exist #make dir since it doesn't exist
mkdir /var/run/dynamic_dns mkdir -p $RUNDIR
verbose_echo "old process id =: PID 'none'"
fi fi
echo $$ > /var/run/dynamic_dns/$service_id.pid echo $$ > $PIDFILE
# determine when the last update was
# the following lines should prevent multiple updates if hotplug fires multiple startups
# as described in Ticket #7820, but did not function if never an update take place
#determine when the last update was # i.e. after a reboot (/var is linked to /tmp)
current_time=$(monotonic_time) # using uptime as reference because date might not be updated via NTP client
last_update=$(( $current_time - (2*$force_interval_seconds) )) get_uptime CURR_TIME
if [ -e "/var/run/dynamic_dns/$service_id.update" ] [ -e "$UPDFILE" ] && {
then LAST_TIME=$(cat $UPDFILE)
last_update=$(cat /var/run/dynamic_dns/$service_id.update) # check also LAST > CURR because link of /var/run to /tmp might be removed
# i.e. boxes with larger filesystems
[ -z "$LAST_TIME" ] && LAST_TIME=0
[ $LAST_TIME -gt $CURR_TIME ] && LAST_TIME=0
}
if [ $LAST_TIME -eq 0 ]; then
verbose_echo " last update =: never"
else
EPOCH_TIME=$(( $(date +%s) - CURR_TIME + LAST_TIME ))
EPOCH_TIME="date -d @$EPOCH_TIME +'$DATE_FORMAT'"
verbose_echo " last update =: $(eval $EPOCH_TIME)"
fi fi
time_since_update=$(($current_time - $last_update))
# we need time here because hotplug.d is fired by netifd
# but IP addresses are not set by DHCP/DHCPv6 etc.
verbose_echo " waiting =: 10 seconds for interfaces to fully come up"
sleep 10
human_time_since_update=$(( $time_since_update / ( 60 * 60 ) )) # verify DNS server
verbose_echo "time_since_update = $human_time_since_update hours" [ -n "$dns_server" ] && {
verbose_echo "******* VERIFY =: DNS server '$dns_server'"
verify_dns "$dns_server"
case $? in
0) ;; # everything OK
2) critical_error "Invalid DNS server Error: '2' - nslookup can not resolve host";;
3) critical_error "Invalid DNS server Error: '3' - nc (netcat) can not connect";;
4) critical_error "Invalid DNS server Error: '4' - Forced IP Version don't matched";;
*) critical_error "Invalid DNS server Error: '1' - unspecific error";;
esac
}
# verify Proxy server and set environment
[ -n "$proxy" ] && {
verbose_echo "******* VERIFY =: Proxy server 'http://$proxy'"
verify_proxy "$proxy"
case $? in
0) # everything OK
export HTTP_PROXY="http://$proxy"
export HTTPS_PROXY="http://$proxy"
export http_proxy="http://$proxy"
export https_proxy="http://$proxy"
;;
2) critical_error "Invalid Proxy server Error: '2' - nslookup can not resolve host";;
3) critical_error "Invalid Proxy server Error: '3' - nc (netcat) can not connect";;
4) critical_error "Invalid Proxy server Error: '4' - Forced IP Version don't matched";;
5) critical_error "Invalid Proxy server Error: '5' - proxy port missing";;
*) critical_error "Invalid Proxy server Error: '1' - unspecific error";;
esac
}
# let's check if there is already an IP registered at the web
# but ignore errors if not
verbose_echo "******* DETECT =: Registered IP"
get_registered_ip REGISTERED_IP
#do update and then loop endlessly, checking ip every check_interval and forcing an updating once every force_interval # loop endlessly, checking ip every check_interval and forcing an updating once every force_interval
# NEW: ### Luci Ticket 538
# a "force_interval" of "0" will run this script only once
# the update is only done once when an interface goes up
# or you run /etc/init.d/ddns start or you can use a cron job
# it will force an update without check when lastupdate happen
# but it will verify after "check_interval" if update is seen in the web
# and retries on error retry_count times
# CHANGES: ### Ticket 16363
# modified nslookup / sed / grep to detect registered ip
# NEW: ### Ticket 7820
# modified nslookup to support non standard dns_server (needs to be defined in /etc/config/ddns)
# support for BIND host command.
# Wait for interface to fully come up, before the first update is done
verbose_echo "*** START LOOP =: $(eval $DATE_PROG)"
# we run NOT once
[ $FORCE_SECONDS -gt 0 -o $VERBOSE_MODE -le 1 ] && syslog_info "Starting main loop"
while [ true ] while : ; do
do
registered_ip=$(echo $(nslookup "$domain" 2>/dev/null) | grep -o "Name:.*" | grep -o "$ip_regex")
current_ip=$(get_current_ip)
# read local IP
verbose_echo "******* DETECT =: Local IP"
get_local_ip LOCAL_IP
ERR_LAST=$? # save return value
# Error in function
[ $ERR_LAST -gt 0 ] && {
if [ $VERBOSE_MODE -le 1 ]; then # VERBOSE_MODE <= 1 then retry
# we can't read local IP
ERR_LOCAL_IP=$(( $ERR_LOCAL_IP + 1 ))
[ $ERR_LOCAL_IP -gt $retry_count ] && critical_error "Can not detect local IP"
verbose_echo "\n!!!!!!!!! ERROR =: detecting local IP - retry $ERR_LOCAL_IP/$retry_count in $RETRY_SECONDS seconds\n"
syslog_err "Error detecting local IP - retry $ERR_LOCAL_IP/$retry_count in $RETRY_SECONDS seconds"
sleep $RETRY_SECONDS
continue # jump back to the beginning of while loop
else
verbose_echo "\n!!!!!!!!! ERROR =: detecting local IP - NO retry\n"
fi
}
ERR_LOCAL_IP=0 # reset err counter
current_time=$(monotonic_time) # prepare update
time_since_update=$(($current_time - $last_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 current uptime
get_uptime CURR_TIME
syslog_echo "Running IP check ..." # send update when current time > next time or local ip different from registered ip (as loop on error)
verbose_echo "Running IP check..." ERR_SEND=0
verbose_echo "current system ip = $current_ip" while [ $CURR_TIME -ge $NEXT_TIME -o "$LOCAL_IP" != "$REGISTERED_IP" ]; do
verbose_echo "registered domain ip = $registered_ip" if [ $VERBOSE_MODE -gt 2 ]; then
verbose_echo " VERBOSE MODE =: NO UPDATE send to DDNS provider"
elif [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
verbose_echo "******* UPDATE =: LOCAL: '$LOCAL_IP' <=> REGISTERED: '$REGISTERED_IP'"
else
verbose_echo "******* FORCED =: LOCAL: '$LOCAL_IP' == REGISTERED: '$REGISTERED_IP'"
fi
# only send if VERBOSE_MODE < 3
ERR_LAST=0
[ $VERBOSE_MODE -lt 3 ] && {
send_update "$LOCAL_IP"
ERR_LAST=$? # save return value
}
# Error in function
if [ "$current_ip" != "$registered_ip" ] || [ $force_interval_seconds -lt $time_since_update ] if [ $ERR_LAST -gt 0 ]; then
then if [ $VERBOSE_MODE -le 1 ]; then # VERBOSE_MODE <=1 then retry
verbose_echo "update necessary, performing update ..." # error sending local IP
ERR_SEND=$(( $ERR_SEND + 1 ))
#do replacement [ $ERR_SEND -gt $retry_count ] && critical_error "can not send update to DDNS Provider"
final_url=$update_url verbose_echo "\n!!!!!!!!! ERROR =: sending update - retry $ERR_SEND/$retry_count in $RETRY_SECONDS seconds\n"
for option_var in $ALL_OPTION_VARIABLES syslog_err "Error sending update - retry $ERR_SEND/$retry_count in $RETRY_SECONDS seconds"
do sleep $RETRY_SECONDS
if [ "$option_var" != "update_url" ] continue # re-loop
then else
replace_name=$(echo "\[$option_var\]" | tr 'a-z' 'A-Z') verbose_echo "\n!!!!!!!!! ERROR =: sending update to DDNS service - NO retry\n"
replace_value=$(eval echo "\$$option_var") break
replace_value=$(echo $replace_value | sed -f /usr/lib/ddns/url_escape.sed) fi
final_url=$(echo $final_url | sed s^"$replace_name"^"$replace_value"^g ) else
# we send data so save "last time"
get_uptime LAST_TIME
echo $LAST_TIME > $UPDFILE # save LASTTIME to file
[ "$LOCAL_IP" != "$REGISTERED_IP" ] \
&& syslog_notice "Changed IP: '$LOCAL_IP' successfully send" \
|| syslog_notice "Forced Update: IP: '$LOCAL_IP' successfully send"
break # leave while
fi fi
done done
final_url=$(echo $final_url | sed s^"\[HTTPAUTH\]"^"${username//^/\\^}${password:+:${password//^/\\^}}"^g )
final_url=$(echo $final_url | sed s/"\[IP\]"/"$current_ip"/g )
# now we wait for check interval before testing if update was recognized
# only sleep if VERBOSE_MODE <= 2 because nothing send so do not wait
[ $VERBOSE_MODE -le 2 ] && {
verbose_echo "****** WAITING =: $CHECK_SECONDS seconds (Check Interval) before continue"
sleep $CHECK_SECONDS
} || verbose_echo " VERBOSE MODE =: NO WAITING for Check Interval\n"
verbose_echo "updating with url=\"$final_url\"" # read at DDNS service registered IP (in loop on error)
REGISTERED_IP=""
ERR_REG_IP=0
while : ; do
verbose_echo "******* DETECT =: Registered IP"
get_registered_ip REGISTERED_IP
ERR_LAST=$? # save return value
#here we actually connect, and perform the update # No Error in function we leave while loop
update_output=$( $retrieve_prog "$final_url" ) [ $ERR_LAST -eq 0 ] && break
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 # we can't read Registered IP
current_time=$(monotonic_time) if [ $VERBOSE_MODE -le 1 ]; then # VERBOSE_MODE <=1 then retry
last_update=$current_time ERR_REG_IP=$(( $ERR_REG_IP + 1 ))
time_since_update='0' [ $ERR_REG_IP -gt $retry_count ] && critical_error "can not detect registered local IP"
registered_ip=$current_ip verbose_echo "\n!!!!!!!!! ERROR =: detecting Registered IP - retry $ERR_REG_IP/$retry_count in $RETRY_SECONDS seconds\n"
syslog_err "Error detecting Registered IP - retry $ERR_REG_IP/$retry_count in $RETRY_SECONDS seconds"
human_time=$(date) sleep $RETRY_SECONDS
verbose_echo "update complete, time is: $human_time"
echo "$last_update" > "/var/run/dynamic_dns/$service_id.update"
else else
human_time=$(date) verbose_echo "\n!!!!!!!!! ERROR =: detecting Registered IP - NO retry\n"
human_time_since_update=$(( $time_since_update / ( 60 * 60 ) )) break # leave while loop
verbose_echo "update unnecessary" fi
verbose_echo "time since last update = $human_time_since_update hours" done
verbose_echo "the time is now $human_time"
# IP's are still different
if [ "$LOCAL_IP" != "$REGISTERED_IP" ]; then
if [ $VERBOSE_MODE -le 1 ]; then # VERBOSE_MODE <=1 then retry
ERR_UPDATE=$(( $ERR_UPDATE + 1 ))
[ $ERR_UPDATE -gt $retry_count ] && critical_error "Registered IP <> Local IP - LocalIP: '$LOCAL_IP' - RegisteredIP: '$REGISTERED_IP'"
verbose_echo "\n!!!!!!!!! ERROR =: Registered IP <> Local IP - starting retry $ERR_UPDATE/$retry_count\n"
syslog_warn "Warning: Registered IP <> Local IP - starting retry $ERR_UPDATE/$retry_count"
continue # loop to beginning
else
verbose_echo "\n!!!!!!!!! ERROR =: Registered IP <> Local IP - LocalIP: '$LOCAL_IP' - RegisteredIP: '$REGISTERED_IP' - NO retry\n"
fi
fi fi
#sleep for 10 minutes, then re-check ip && time since last update # we checked successful the last update
sleep $check_interval_seconds ERR_UPDATE=0 # reset error counter
# force_update=0 or VERBOSE_MODE > 1 - leave the main loop
[ $FORCE_SECONDS -eq 0 -o $VERBOSE_MODE -gt 1 ] && {
verbose_echo "****** LEAVING =: $(eval $DATE_PROG)"
syslog_info "Leaving"
break
}
verbose_echo "********* LOOP =: $(eval $DATE_PROG)"
syslog_info "Rerun IP check"
done done
#should never get here since we're a daemon, but I'll throw it in anyway verbose_echo "****** STOPPED =: PID '$$' at $(eval $DATE_PROG)\n"
return 0 syslog_info "Done"
exit 0

29
net/ddns-scripts/files/usr/lib/ddns/services_ipv6 Normal file
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@ -0,0 +1,29 @@
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# !!!!! IPv6 Version of original services file !!!!!
# !!!!! funtionally and syntax is the same !!!!!
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# 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
# tested with
# Securepoint Dynamic-DNS-Service
"spdns.de" "http://[USERNAME]:[PASSWORD]@update.spdns.de/nic/update?hostname=[DOMAIN]&myip=[IP]"
# Hurricane Electric Dynamic DNS
"he.net" "http://[DOMAIN]:[PASSWORD]@dyn.dns.he.net/nic/update?hostname=[DOMAIN]&myip=[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 #
# #
###########################################################################################################

25
net/ddns-scripts/files/usr/lib/ddns/url_escape.sed
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@ -1,25 +0,0 @@
# 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