Custom DDNS Script - Unauthorized Error

[Trent Hubbert]

Setting up a ddns script for RT-AC68U using the following script. (with the pass and usernames changed). I get an error esults: HTTP/1.1 401 Unauthorized^M Server: in the log file. I just installed entware but not sure what packages if any are required. I verified that the https://$username... works from the browser so I know the password and username is correct. Any ideas?


#!/bin/sh
# Update the following variables:
USERNAME=dnsomatic_username
PASSWORD=dnsomatic_password
HOSTNAME=all.dnsomatic.com

# Should be no need to modify anything beyond this point
/usr/sbin/curl -k --silent "https://$USERNAME:$PASSWORD@updates...ME&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG&myip=" > /dev/null
if [ $? -eq 0 ]; then
/sbin/ddns_custom_updated 1
else
/sbin/ddns_custom_updated 0
fi

 

[Fitz Mutch]

... I get an error results: HTTP/1.1 401 Unauthorized^M Server: in the log file. ... Any ideas?

Try replace the line:

/usr/sbin/curl --silent --cacert /rom/ca-bundle.crt "https://$USERNAME:$PASSWORD@updates...ME&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG&myip=" > /dev/null

 

[Trent Hubbert]

Try replace the line:

/usr/sbin/curl --silent --cacert /rom/ca-bundle.crt "https://$USERNAME:$PASSWORD@updates...ME&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG&myip=" > /dev/null

No change. Same error.

 

[Trent Hubbert]

No change. Same error.

Now it works with the following change: (not sure why)

/usr/sbin/curl -s -k "https://$USERNAME:$PASSWORD@updates...ME&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG&myip=" > /dev/null

 

[john9527]

Do you have any special characters in your username or password?

 

[Trent Hubbert]

Here is the fix. Any special characters ($,@,(,), etc.) in the username or password must be replaced with the %URL equivalents.

 

[Fitz Mutch]

EDIT: curl will automatically url encode the data as shown below

Also, notice how you can specify your WAN IP address to DNS-O-Matic in the request.

/jffs/scripts/ddns-start

#!/bin/sh
WAN_IP="$1"
# Update the following variables:
USERNAME=""
PASSWORD=""
HOSTNAME=""

# Should be no need to modify anything beyond this point
/usr/sbin/curl --get --silent --cacert /rom/ca-bundle.crt https://updates.dnsomatic.com/nic/update --data-urlencode hostname=${HOSTNAME}&myip=${WAN_IP}&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG --user ${USERNAME}:${PASSWORD} >/dev/null 2>&1
if [ $? -eq 0 ]; then
  /sbin/ddns_custom_updated 1
else
  /sbin/ddns_custom_updated 0
fi