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update ip query method #11

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update ip query method #11

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05b01c6
use curl ipify.org to query ip, in the beginning, create two empty tm…
Jul 2, 2021
326c970
update Readme
sudowanderer Sep 1, 2021
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5 changes: 5 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
@@ -1,4 +1,9 @@
# Update(2021-7-2)

Use `curl ipify.org` to query ip, in the beginning, create two empty tmp file to avoid occurs error。

# Announcement (2017-12-21)

I no longer use Namesilo's DNS service so I cannot help any issue for this script.

-----------------------------------------------------------------
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42 changes: 13 additions & 29 deletions namesilo_ddns.sh
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Original file line number Diff line number Diff line change
@@ -1,13 +1,13 @@
#!/bin/bash

##Domain name:
DOMAIN="mydomain.tld"
DOMAIN="mydomain.com"

##Host name (subdomain). Optional. If present, must end with a dot (.)
HOST="subdomain."
##Host name (subdomain). Optional
HOST="subdomain"

##APIKEY obtained from Namesilo:
APIKEY="c40031261ee449037a4b4"
APIKEY="c40031261ee449037axxx"

## Do not edit lines below ##

Expand All @@ -23,28 +23,12 @@ NO_IP_CHANGE_TIME=86400
##Response from Namesilo
RESPONSE="/tmp/namesilo_response.xml"

##Choose randomly which OpenDNS resolver to use
RESOLVER=resolver$(echo $((($RANDOM%4)+1))).opendns.com
##Get the current public IP using DNS
CUR_IP="$(dig +short myip.opendns.com @$RESOLVER)"
ODRC=$?
##Get the current public IP using ipify
CUR_IP=`curl -s https://api.ipify.org`

## Try google dns if opendns failed
if [ $ODRC -ne 0 ]; then
logger -t IP.Check -- IP Lookup at $RESOLVER failed!
sleep 5
##Choose randomly which Google resolver to use
RESOLVER=ns$(echo $((($RANDOM%4)+1))).google.com
##Get the current public IP
IPQUOTED=$(dig TXT +short o-o.myaddr.l.google.com @$RESOLVER)
GORC=$?
## Exit if google failed
if [ $GORC -ne 0 ]; then
logger -t IP.Check -- IP Lookup at $RESOLVER failed!
exit 1
fi
CUR_IP=$(echo $IPQUOTED | awk -F'"' '{ print $2}')
fi
# Init
touch /var/tmp/MyIPTime
touch /var/tmp/MyPubIP

##Check file for previous IP address
if [ -f $IP_FILE ]; then
Expand All @@ -56,17 +40,17 @@ fi
##See if the IP has changed
if [ "$CUR_IP" != "$KNOWN_IP" ]; then
echo $CUR_IP > $IP_FILE
logger -t IP.Check -- Public IP changed to $CUR_IP from $RESOLVER
logger -t IP.Check -- Public IP changed to $CUR_IP

##Update DNS record in Namesilo:
curl -s "https://www.namesilo.com/api/dnsListRecords?version=1&type=xml&key=$APIKEY&domain=$DOMAIN" > $DOMAIN.xml
RECORD_ID=`xmllint --xpath "//namesilo/reply/resource_record/record_id[../host/text() = '$HOST$DOMAIN' ]" $DOMAIN.xml | grep -oP '(?<=<record_id>).*?(?=</record_id>)'`
RECORD_ID=`xmllint --xpath "//namesilo/reply/resource_record/record_id[../host/text() = '$HOST.$DOMAIN' ]" $DOMAIN.xml | grep -oP '(?<=<record_id>).*?(?=</record_id>)'`
curl -s "https://www.namesilo.com/api/dnsUpdateRecord?version=1&type=xml&key=$APIKEY&domain=$DOMAIN&rrid=$RECORD_ID&rrhost=$HOST&rrvalue=$CUR_IP&rrttl=3600" > $RESPONSE
RESPONSE_CODE=`xmllint --xpath "//namesilo/reply/code/text()" $RESPONSE`
case $RESPONSE_CODE in
300)
date "+%s" > $IP_TIME
logger -t IP.Check -- Update success. Now $HOST$DOMAIN IP address is $CUR_IP;;
logger -t IP.Check -- Update success. Now $HOST.$DOMAIN IP address is $CUR_IP;;
280)
logger -t IP.Check -- Duplicate record exists. No update necessary;;
*)
Expand All @@ -78,7 +62,7 @@ if [ "$CUR_IP" != "$KNOWN_IP" ]; then
else
## Only log all these events NO_IP_CHANGE_TIME after last update
[ $(date "+%s") -gt $((($(cat $IP_TIME)+$NO_IP_CHANGE_TIME))) ] &&
logger -t IP.Check -- NO IP change from $RESOLVER &&
logger -t IP.Check -- NO IP change &&
date "+%s" > $IP_TIME
fi

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