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- #/bin/bash
-
- # Settings
- PIA_PASSWD_FILE=/etc/openvpn/credentials.txt
-
- username=$(head -1 $PIA_PASSWD_FILE)
- passwd=$(tail -1 $PIA_PASSWD_FILE)
- local_vpn_ip=$(ip addr show tun0 | grep inet | awk '{ print $2 }')
- pia_client_id_file=/etc/transmission-daemon/pia_client_id
- transmission_settings_file=/etc/transmission-daemon/settings.json
- port_assignment_url=https://www.privateinternetaccess.com/vpninfo/port_forward_assignment
-
- #
- # First get a port from PIA
- #
-
- new_client_id() {
- head -n 100 /dev/urandom | md5sum | tr -d " -" | tee $pia_client_id_file
- }
-
- pia_client_id="$(cat $pia_client_id_file 2>/dev/null)"
- if [[ -z "$pia_client_id" ]]; then
- echo "Generating new client id for PIA"
- pia_client_id=$(new_client_id)
- fi
-
- # Get the port
- pia_response=$(curl -d "user=$username&pass=$passwd&client_id=$pia_client_id&local_ip=$local_vpn_ip" $port_assignment_url)
-
- new_port=$(echo $pia_response | grep -oE "[0-9]+")
- echo "Got new port $new_port from pia"
-
- #
- # Now, set port in Transmission
- #
-
- # Check if transmission remote is set up with authentication
- auth_enabled=$(grep 'rpc-authentication-required\"' $transmission_settings_file | grep -oE 'true|false')
- if [[ "true" = "$auth_enabled" ]]
- then
- echo "transmission auth required"
- myauth="--auth username:password"
- else
- echo "transmission auth not required"
- myauth=""
- fi
-
- # get current listening port
- transmission_peer_port=$(transmission-remote $myauth -si | grep Listenport | grep -oE '[0-9]+')
- if [[ "$new_port" != "$transmission_peer_port" ]]
- then
- transmission-remote $myauth -p "$new_port"
- echo "Checking port..."
- sleep 10 && transmission-remote $myauth -pt
- else
- echo "No action needed, port hasn't changed"
- fi
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