How to redirect DBUS signals to php

[Tsjippy]

Hi All,

I am trying to listen to DBUS from php, I wonder what is the most efficient way.
My end goal is to let it run on a server without root access.

This is what I tried (as it does not require extra installs):
1) Bash 1

dbus-monitor --profile "interface='org.asamk.Signal',member='MessageReceivedV2'" |
while read line; do
    php daemon.php $line
done

Result Does not work as the --profile parameter doesn't give the parameters
Possible solution Find a way to get the last message via dbus

2) Bash 2

dbus-monitor "interface='org.asamk.Signal',member='MessageReceivedV2'" |
while read line; do
    php daemon.php $line
done

Result Does not work as each line invokes the script
Possible solution Find a way to send the whole request at once

3) Python

from pydbus import SessionBus
from gi.repository import GLib
import subprocess
import pathlib
folder  = str(pathlib.Path(__file__).parent.resolve())

def msg_rcv (timestamp, source, group_id, message, attachments):
    subprocess.call(["php", folder+"/daemon2.php", str(timestamp), str(source), str(group_id), str(message), str(attachments)])

bus                         = SessionBus()
loop                        = GLib.MainLoop()

signal                      = bus.get('org.asamk.Signal')
signal.onMessageReceivedV2  = msg_rcv

loop.run()

Result Does work but feels like an overkill

[Tsjippy]

I think I found my answer:

Start the daemon while redirecting its output to a file.
Then when you receive a signal, read the last line of that file and empty the file