Good evening guys, I have a Xiaomi Mi Router 4A Gigabit Edition with OpenWrt 22.03.2 i'll found a script at https://gist.github.com/jwalanta/53f55d03fcf5265938b64ffd361502d5 to be notified via email when a new device connects to my network. I read that it doesn't work in version 22.03..is something like that valid? Do you have a better suggestion? ill try it and didnt work for me.....also ill make openwrt dhcp client because connects to isp router.......when i connect from wifi device to Openwrt it is delay to take internet ...
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There's also a workaround in the last post?
what do you mean
and it works?
Worth a try ?!
not working
Use a hotplug script as described in this topic.
only this
You can create a hotplug script (in /etc/hotplug.d/dhcp)
[ "$ACTION" == "add" ] || exit 0
known_mac_addr="/etc/known_mac_addr"
notification_email="aaaa@gmail.com"
if ! /bin/grep -iq "$MACADDR" "$known_mac_addr"; then
msg="IP $IPADDR assigned to a new device with MAC addr $MACADDR"
echo -e "From: \nTo:$notification_email \nSubject:DHCP\n\n$msg" | msmtp "$notification_email"
fi
exit 0
or everything i mean and this https://gist.github.com/jwalanta/53f55d03fcf5265938b64ffd361502d5
Are you wanting to actually receive an SMTP email sent via the internet to your personal inbox, or just a local sendmail message notification?
Good morning from Greece my friend, SMTP mail from internet.
If you don't have your own mail server that you can use as a smart host, see the configuration example of how to set up gmail. You will need to generate an App Password.
Make sure you get an email when you run:
echo -e "Subject: Test mail\n\nThis is a test \"message\"." | msmtp someone@examle.com
Dump the current known devices to a file
cat /tmp/dhcp.leases | awk '{ print $2" "$3" "$4 }' >/etc/known_macs
The script below should do the job. Don't forget to set the correct mail address.
For testing purposes you could delete /etc/known_macs, comment line 1 and uncomment line 2.
cat << "EOF" > /etc/hotplug.d/dhcp/90-newdev
[ "$ACTION" == "add" ] || exit 0
# [ "$ACTION" == "add" -o "$ACTION" == "update" ] || exit 0
known_macs="/etc/known_macs"
email_addr="someone@examle.com"
if ! /bin/grep -iq "$MACADDR" "$known_macs"; then
msg="New device detected:\n\nMAC: $MACADDR\nIP: $IPADDR\nHostname: $HOSTNAME"
echo "$MACADDR $IPADDR $HOSTNAME" >> /etc/known_macs
echo -e "To:$email_addr \nSubject:New device\n\n$msg" | msmtp "$email_addr"
fi
exit 0
EOF
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To add to @pavelgl ’s post (a novel approach 
). This should get you up with adding gmail 2 Step Verification and modifying your msmtprc config.
[Solved]Mailsend (cant send a mail) Invalid login or password - #7 by RuralRoots
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put the script in ```
/etc/hotplug.d/dhcp/ with the name 90-newdev......install msmtp and check it...send email.......everything looks fine.....how i check if the script works?......note receive any mail from script
The idea is to receive emails only when a new device is detected on the network.
So connect a new device to your network, change the MAC address of an existing device or
meaning
rm /etc/known_macs
# [ "$ACTION" == "add" ] || exit 0
[ "$ACTION" == "add" -o "$ACTION" == "update" ] || exit 0
and you will receive emails until each device on your network updates its dhcp lease and it is written to /etc/known_macs.
i dont have file in /etc/known_macsto delete it...here is the problem........maybe openwrt is dhcp client?
Obviously you didn't do that
Just edit the script
and disconnect/connect some device.
root@Chrisrer:~# cat /tmp/dhcp.leases | awk '{ print $2" "$3" "$4 }' >/etc/known
_macs
cat: can't open '/tmp/dhcp.leases': No such file or directory
root@Chrisrer:~#
i was make the changes.........maybe the problem is something else connecteting device but not give access to internet
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