temporary fix for #25

Uses multithreading.Process instead of GLib.timeout_add()

The moment I finished writing this part, I found out the only problem
with my previous commit was that I had setup the timeout _after_ calling
the blocking function wait_for_change instead of before it.

Although this version (with Process) works, I'm reverting to the
previous version and swapping the two lines (which I had tested and
found to work)

And in case you have read upto the previous line you should also know I
fixed some code in the README

TL;DR: I have proven once again I am an idiot

README.md

@@ -136,7 +136,7 @@ uname -r
 python3 --version
 
 # Check for IBSS (ad-hoc) support in your WiFi firmware or driver
-iw phy | grep -iq ibss && echo "IBSS is supported" || echo "IBSS not supported"
+iw phy | grep -q join_ibss && echo "IBSS is supported" || echo "IBSS not supported"
 ```
 
 Clone the naxalnet repo and cd into it.
@@ -300,8 +300,9 @@ systemd-networkd configures the network.
 
 ### Online class
 
-naxalnet can be used to share connections to join online classes.
-You need at least one device with internet access if you are not using a program like [Jami][].
+naxalnet can be used to share connections to join online classes. You need
+at least one device with internet access if you are not using a program
+like [Jami][].
 
 <!--
 

naxalnet/__init__.py

@@ -42,4 +42,4 @@ given below.
 #
 # In case you forgot to change the version, skip the number
 # and put the next number in the next commit.
-__version__ = "0.5.1a0.dev5"
+__version__ = "0.5.1a0.dev6"

naxalnet/network.py

@@ -28,9 +28,10 @@ examples.
 """
 
 import subprocess
+from multiprocessing import Process
 from pathlib import Path
 from dasbus.connection import SystemMessageBus
-from dasbus.loop import EventLoop, GLib
+from dasbus.loop import EventLoop
 
 
 NETWORKD_BUS = "org.freedesktop.network1"
@@ -142,6 +143,7 @@ class NetworkLoop(NetworkD):
         self.waitfor = None
         self.wait_function = None
         self.loop = EventLoop()
+        self.timeout = 0
 
     def start_loop(self):
         """start the dasbus loop"""
@@ -149,17 +151,30 @@ class NetworkLoop(NetworkD):
         print("waitfor", self.waitfor)
         print("waitfor func", self.wait_function)
         self.proxy.PropertiesChanged.connect(self.on_properties_changed)
-        self.loop.run()
+        process = Process(target=self.loop.run)
+        process.start()
+
+        # wait until timeout
+        if self.timeout != 0:
+            process.join(self.timeout)
+        else:
+            process.join()
+
+        # When the process is timed out, it is not killed. We have to kill
+        # it manually
+        if process.is_alive():
+            self.on_timeout()
 
     def wait_until_routable(self, timeout=0):
         """
-        Wait until timeout in milliseconds and returns True when any
+        Wait until timeout in seconds and returns True when any
         network interface is shown routable by networkd. Does not wait
         for timeout if timeout==0
         """
         print("wait until routable")
+        self.timeout = timeout
         self.wait_for_change("AddressState", self.on_addressstate_change)
-        self.setup_timeout(timeout)
+
         return self.is_routable()
 
     def wait_for_change(self, name, function):
@@ -181,13 +196,7 @@ class NetworkLoop(NetworkD):
         if self.waitfor in data:
             return self.wait_function()
 
-    def setup_timeout(self, timeout):
-        """setup a timeout"""
-        print("setup timeout")
-        if timeout != 0:
-            GLib.timeout_add(timeout, self.on_timeout)
-
     def on_timeout(self):
-        """called by dasbus when a timeout occurs"""
+        """called when a timeout occurs"""
         print("on timeout")
         self.loop.quit()

naxalnet/scripts.py

@@ -63,8 +63,7 @@ def any_interface_is_routable():
         logger.debug("Adding temporary config %s", i)
         networkd.add_config(i)
 
-    # timeout = 10 seconds
-    routable = networkd.wait_until_routable(10 * 1000)
+    routable = networkd.wait_until_routable(timeout=10)
     networkd.remove_all_configs()
 
     return routable

pyproject.toml

@@ -1,3 +1,4 @@
 [build-system]
+# I don't know what this means, I just copied it from some setuptools tutorial
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"

setup.cfg

@@ -1,4 +1,7 @@
-# This program is not meant to be distributed through PyPi
+# This file is loosely based on the setup.cfg used in django.
+# naxalnet is not meant to be distributed through PyPi. This program uses
+# a systemd service, and some other files whose path is hardcoded into the
+# module.
 [metadata]
 name = naxalnet
 version = attr: naxalnet.__version__