Make snapshot from Ubiquiti UVC camera
Posted: Wednesday 26 October 2016 4:10
I like the Ubiquiti cameras, however the API documentation just s*cks. So I started to experiment a little and I found out that every individual camera makes a snapshot every second. Getting the snapshot (snap.jpeg) of the camera is a little bit harder.
The thirst thing I tired was fetching the file via http, so something like http://xxx.xxx.xxx.xxx/snap.jpeg, this works only If you are already logged-in.
Next I tried:
wget --user=ubnt --password=yyyyyy https://xxx.xxx.xxx.xxx:/snap.jpeg this generates the "Unknown authentication scheme" error. It seems that you have to change someting in the camera to make this work. I am a bit lazy to adapt all my camera's.
So I decided to fetch snap.jpeg via scp, problem is however that you need to enter a password and that's not very convenient. There is a trick described on the ubiquiti fora where you have to upload the key into the camera, and again I didnt want to do that.
Next I used sshpass, I know this is not the most secure method, but what the heck it's behind my firewall
where yyyyyyy is the camera's password, and xxx.xxx.xxx.xxx is the camera's ip address.
If you want to call this script from within Domotics, be sure the camera key is in the known_hosts file for root:
Now you have a snapshot in the /tmp directory. Via Pushsafer I want generate a notification with the snapshot. Be aware pushsafer is not free, but it offers much more funtionality with a better user interface than prowl, so a couple of euros is well spent.
The snapshot is rather big so you have to reduce it in size:
Then you need to encode it via base64:
The complete script:
The thirst thing I tired was fetching the file via http, so something like http://xxx.xxx.xxx.xxx/snap.jpeg, this works only If you are already logged-in.
Next I tried:
wget --user=ubnt --password=yyyyyy https://xxx.xxx.xxx.xxx:/snap.jpeg this generates the "Unknown authentication scheme" error. It seems that you have to change someting in the camera to make this work. I am a bit lazy to adapt all my camera's.
So I decided to fetch snap.jpeg via scp, problem is however that you need to enter a password and that's not very convenient. There is a trick described on the ubiquiti fora where you have to upload the key into the camera, and again I didnt want to do that.
Next I used sshpass, I know this is not the most secure method, but what the heck it's behind my firewall
Code: Select all
sshpass -p yyyyyyyy scp -r [email protected]:/tmp/snap.jpeg /tmp/snap.jpegIf you want to call this script from within Domotics, be sure the camera key is in the known_hosts file for root:
Code: Select all
sudo ssh-keyscan -H xxx.xxx.xxx.xxx >> ~/.ssh/known_hostsThe snapshot is rather big so you have to reduce it in size:
Code: Select all
convert -resize 40% /tmp/snap.jpeg /tmp/snap2.jpegCode: Select all
base64 --wrap=0 /tmp/snap2.jpegCode: Select all
#!/bin/bash
sshpass -p yyyyyyyyyy scp -r [email protected]:/tmp/snap.jpeg /tmp/snap.jpeg
convert -resize 40% /tmp/snap.jpeg /tmp/snap2.jpeg
URL="https://www.pushsafer.com/api"
PRIVATEKEY="" #Your Private or Alias Key
TITLE="Bel!"
MESSAGE="Er wordt gebeld";
# DEVICE="131"; #Device or Device Group ID
ICON="55";
SOUND="3";
VIBRATION="0";
JPEG="$( base64 --wrap=0 /tmp/snap2.jpeg )"
PICTURE="data:image/png;base64,$JPEG";
if [ ${#PRIVATEKEY} == 0 ]
then
echo "Error: You need to supply an app token"
exit 1;
fi
if [ ${#MESSAGE} == 0 ]
then
echo "Error: message may not be empty"
exit 1;
fi
RESPONSE=`curl -s --data k=$PRIVATEKEY --data-urlencode t="$TITLE" --data-urlencode m="$MESSAGE" --data d="$DEVICE" --data i="$ICON" --data s="$SOUND" --data v="$VIBRATION" --data-urlencode p="$PI$
echo "Send Push"
echo "| TITLE: $TITLE"
echo "| MESSAGE: $MESSAGE"
echo "| RESPONSE: $RESPONSE"
echo "|____________________"
![https://user:[email protected]/s ... mp=XXXXXXX](https://user:password@xxx.xxx.xxx.xxx/snap.jpeg?timestamp=XXXXXXX){kind=link}