mirror of
https://github.com/mail-in-a-box/mailinabox.git
synced 2025-04-25 03:36:56 +00:00
add alternative dyndns function that determines public ip on curl basis instead of dig
This commit is contained in:
KiekerJan
parent
6d3d2ceb82
commit
6a7d497fe7
223
tools/dyndns/dyndns2.sh
Executable file
223
tools/dyndns/dyndns2.sh
Executable file
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#!/bin/bash
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# based on dm-dyndns v1.0, dmurphy@dmurphy.com
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# Shell script to provide dynamic DNS to a mail-in-the-box platform.
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# Requirements:
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# curl installed
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# oathtool installed if totp is to be used
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# OpenDNS myip service availability (myip.opendns.com 15)
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# Mailinabox host (see https://mailinabox.email 2)
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# Mailinabox admin username/password in the CFGFILE below
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# one line file of the format (curl cfg file):
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# user = “username:password”
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# Dynamic DNS name to be set
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# DYNDNSNAMELIST file contains one hostname per line that needs to be set to this IP.
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#----- Contents of dyndns.cfg file below ------
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#----- user credentials -----------------------
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#USER_NAME="admin@mydomain.com"
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#USER_PASS="MYADMINPASSWORD"
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#----- Contents of dyndns.domain below --------
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#<miabdomain.tld>
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#------ Contents of dyndns.dynlist below ------
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#vpn.mydomain.com
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#nas.mydomain.com
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#------ Contents of dyndns.totp ---------------
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#- only needed in case of TOTP authentication -
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#TOTP_KEY=ABCDEFGABCFEXXXXXXXX
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MYNAME="dyndns"
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CFGFILE="$MYNAME.cfg"
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TOTPFILE="$MYNAME.totp"
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DOMFILE="$MYNAME.domain"
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CURLCMD="/usr/bin/curl"
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DIGCMD="/usr/bin/dig"
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CATCMD="/bin/cat"
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OATHTOOLCMD="/usr/bin/oathtool"
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DYNDNSNAMELIST="$MYNAME.dynlist"
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IGNORESTR=";; connection timed out; no servers could be reached"
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if [ ! -x $CURLCMD ]; then
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echo "$MYNAME: curl command $CURLCMD not found. Check and fix please."
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exit 99
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fi
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if [ ! -x $DIGCMD ]; then
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echo "$MYNAME: dig command $DIGCMD not found. Check and fix please."
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exit 99
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fi
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if [ ! -x $CATCMD ]; then
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echo "$MYNAME: cat command $CATCMD not found. Check and fix please."
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exit 99
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fi
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DOMAIN=$(cat $DOMFILE)
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MIABHOST="box.$DOMAIN"
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noww="$(date +"%F %T")"
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echo "$noww: running dynamic dns update for $DOMAIN"
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if [ ! -f $CFGFILE ]; then
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echo "$MYNAME: $CFGFILE not found. Check and fix please."
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exit 99
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fi
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if [ ! -f $DYNDNSNAMELIST ]; then
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echo "$MYNAME: $DYNDNSNAMELIST not found. Check and fix please."
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exit 99
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fi
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source $CFGFILE
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AUTHSTR="Authorization: Basic $(echo $USER_NAME:$USER_PASS | base64 -w 0)"
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# Test an IP address for validity:
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# Usage:
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# valid_ipv4 IP_ADDRESS
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# if [[ $? -eq 0 ]]; then echo good; else echo bad; fi
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# OR
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# if valid_ipv4 IP_ADDRESS; then echo good; else echo bad; fi
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#
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function valid_ipv4()
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{
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local ip=$1
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local stat=1
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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OIFS=$IFS
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IFS='.'
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ip=($ip)
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IFS=$OIFS
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[[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
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&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
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stat=$?
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fi
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return $stat
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}
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MYIP="`$CURLCMD -4 -s icanhazip.com`"
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if [[ "`valid_ipv4 ${MYIP}`" -ne 0 ]]; then
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MYIP="`$CURLCMD -4 -s api64.ipify.org`"
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fi
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if [[ "`valid_ipv4 ${MYIP}`" -eq 0 ]]; then
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for DYNDNSNAME in `$CATCMD $DYNDNSNAMELIST`
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do
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PREVIP="`$DIGCMD A +short $DYNDNSNAME @$MIABHOST`"
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if [ -z "$PREVIP" ]; then
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echo "$MYNAME: dig output was blank."
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fi
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if [ "x$PREVIP" == "x$MYIP" ]; then
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echo "$MYNAME: $DYNDNSNAME ipv4 hasn't changed."
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else
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echo "$MYNAME: $DYNDNSNAME changed (previously: $PREVIP, now: $MYIP)"
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STATUS="`$CURLCMD -X PUT -u $USER_NAME:$USER_PASS -s -d $MYIP https://$MIABHOST/admin/dns/custom/$DYNDNSNAME/A`"
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case $STATUS in
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"OK") echo "$MYNAME: mailinabox API returned OK, cmd succeeded but no update.";;
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"updated DNS: $DOMAIN") echo "$MYNAME: mailinabox API updated $DYNDNSNAME ipv4 OK.";;
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"invalid-totp-token"|"missing-totp-token") echo "$MYNAME: invalid TOTP token. Retrying with TOTP token"
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if [ ! -x $AOTHTOOLCMD ]; then
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echo "$MYNAME: oathtool command $OATHTOOLCMD not found. Check and fix please."
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exit 99
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fi
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if [ ! -f $TOTPFILE ]; then
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echo "$MYNAME: $TOTPFILE not found. Check and fix please."
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exit 99
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fi
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source $TOTPFILE
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TOTP="X-Auth-Token: $(oathtool --totp -b -d 6 $TOTP_KEY)"
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STATUST="`$CURLCMD -X PUT -u $USER_NAME:$USER_PASS -H "$TOTP" -s -d $MYIP https://$MIABHOST/admin/dns/custom/$DYNDNSNAME/A`"
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case $STATUST in
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"OK") echo "$MYNAME: mailinabox API returned OK, cmd succeeded but no update.";;
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"updated DNS: $DOMAIN") echo "$MYNAME: mailinabox API updated $DYNDNSNAME ipv4 OK.";;
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"invalid-totp-token") echo "$MYNAME: invalid TOTP token.";;
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*) echo "$MYNAME: other status from mailinabox API. Please check: $STATUST (2)";;
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esac
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;;
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*) echo "$MYNAME: other status from mailinabox API. Please check: $STATUS (1)";;
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esac
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fi
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done
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else
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echo "$MYNAME: No ipv4 address found."
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fi
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# Now to do the same for ipv6
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function valid_ipv6()
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{
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local IP_ADDR=$1
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local stat=1
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if python3 -c "import ipaddress; ipaddress.IPv6Network('${IP_ADDR}')" 2>/dev/null; then
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stat=0
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fi
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return $stat
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}
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MYIP="`$CURLCMD -6 -s icanhazip.com`"
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if [[ "`valid_ipv6 ${MYIP}`" -ne 0 ]]; then
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MYIP="`$CURLCMD -6 -s api64.ipify.org`"
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fi
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if [[ "`valid_ipv6 ${MYIP}`" -eq 0 ]]; then
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for DYNDNSNAME in `$CATCMD $DYNDNSNAMELIST`
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do
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PREVIP="`$DIGCMD AAAA +short $DYNDNSNAME @$MIABHOST`"
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if [ -z "$PREVIP" ]; then
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echo "$MYNAME: dig output was blank."
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fi
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if [ "x$PREVIP" = "x$MYIP" ]; then
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echo "$MYNAME: $DYNDNSNAME ipv6 hasn't changed."
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else
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echo "$MYNAME: $DYNDNSNAME changed (previously: $PREVIP, now: $MYIP)"
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STATUS="`$CURLCMD -X PUT -u $USER_NAME:$USER_PASS -s -d $MYIP https://$MIABHOST/admin/dns/custom/$DYNDNSNAME/AAAA`"
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case $STATUS in
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"OK") echo "$MYNAME: mailinabox API returned OK, cmd succeeded but no update.";;
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"updated DNS: $DOMAIN") echo "$MYNAME: mailinabox API updated $DYNDNSNAME ipv6 OK.";;
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"invalid-totp-token"|"missing-totp-token") echo "$MYNAME: invalid TOTP token. Retrying with TOTP token"
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if [ ! -x $AOTHTOOLCMD ]; then
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echo "$MYNAME: oathtool command $OATHTOOLCMD not found. Check and fix please."
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exit 99
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fi
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if [ ! -f $TOTPFILE ]; then
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echo "$MYNAME: $TOTPFILE not found. Check and fix please."
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exit 99
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fi
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source $TOTPFILE
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TOTP="X-Auth-Token: $(oathtool --totp -b -d 6 $TOTP_KEY)"
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STATUST="`$CURLCMD -X PUT -u $USER_NAME:$USER_PASS -H "$TOTP" -s -d $MYIP https://$MIABHOST/admin/dns/custom/$DYNDNSNAME/AAAA`"
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case $STATUST in
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"OK") echo "$MYNAME: mailinabox API returned OK, cmd succeeded but no update.";;
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"updated DNS: $DOMAIN") echo "$MYNAME: mailinabox API updated $DYNDNSNAME ipv6 OK.";;
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"invalid-totp-token") echo "$MYNAME: invalid TOTP token.";;
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*) echo "$MYNAME: other status from mailinabox API. Please check: $STATUST (2)";;
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esac
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;;
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*) echo "$MYNAME: other status from mailinabox API. Please check: $STATUS (1)";;
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esac
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fi
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done
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else
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echo "$MYNAME: No ipv6 address found."
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exit 99
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fi
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exit 0
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