Integration with free DDNS service (DuckDNS)

[viniciusvillas]

Here's a quick & dirty debug_cmd.sh that I've put together to update my DuckDNS (DDNS) entry:

#!/bin/sh

# Enable telnet (wait until after p2pcam kills it and then start it again).
(sleep 60 && /usr/sbin/telnetd)&

# Always disable the voices.
if [ -f "/home/VOICEON" ]; then rm /home/VOICEON; fi
if [ ! -f "/home/VOICEOFF" ]; then touch /home/VOICEOFF; fi

# Setup curl.
export LD_LIBRARY_PATH=/mnt/mmc01/0/curl/:$LD_LIBRARY_PATH

# Enable DDNS to update DuckDNS hourly.
while true; do echo url="https://www.duckdns.org/update?domains=<domain>&token=<token>&ip=" | ./curl/curl -k -o ./duckdns.log -K - ; sleep 3600 ; done &

The curl binary and dependencies I got from this repository.

I've also changed the RTSP password by modifying the parameter passwd = <password> in the file /bak/hwcfg.ini (in this firmware version 5.5.4.0728, the files are automatically copied from /bak/* to /home/* after every reboot).

The only thing that remains for me to do is changing the root password (currently, cxlinux) for the telnet connection. Since / is mounted as a read-only squashfs, I can't write to /etc/passwd. 😕

[viniciusvillas]

Just found a way to make /etc/passwd writable :)

mount --bind ./files/passwd /etc/passwd