examples: add Wi-Fi P2P example

Add a python example using GObject introspection that shows how to
scan for Wi-Fi P2P peers and connect to one of them.

examples/python/gi/wifi-p2p.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2020 Red Hat, Inc.
+
+# This example performs a scan of Wi-Fi P2P peers and connects to one
+# of them.
+
+import sys
+import uuid
+import gi
+gi.require_version('NM', '1.0')
+from gi.repository import GLib, NM
+
+main_loop = None
+client = None
+
+def create_profile(name, peer_mac):
+    profile = NM.SimpleConnection.new()
+
+    s_con = NM.SettingConnection.new()
+    s_con.set_property(NM.SETTING_CONNECTION_ID, name)
+    s_con.set_property(NM.SETTING_CONNECTION_UUID, str(uuid.uuid4()))
+    s_con.set_property(NM.SETTING_CONNECTION_TYPE, "wifi-p2p")
+    s_con.set_property(NM.SETTING_CONNECTION_AUTOCONNECT, False)
+
+    s_ip4 = NM.SettingIP4Config.new()
+    s_ip4.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
+
+    s_ip6 = NM.SettingIP6Config.new()
+    s_ip6.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
+
+    s_wifi_p2p = NM.SettingWifiP2P.new()
+    s_wifi_p2p.set_property(NM.SETTING_WIFI_P2P_PEER, peer_mac)
+    s_wifi_p2p.set_property(NM.SETTING_WIFI_P2P_WFD_IES,
+                            GLib.Bytes.new(b'\x00\x00\x06\x00\x90\x1c\x44\x00\xc8'))
+
+    profile.add_setting(s_con)
+    profile.add_setting(s_ip4)
+    profile.add_setting(s_ip6)
+    profile.add_setting(s_wifi_p2p)
+
+    return profile
+
+def activated_cb(client, result, data):
+    try:
+        client.add_and_activate_connection2_finish(result)
+        print(" * Connection profile activated successfully")
+    except Exception as e:
+        sys.stderr.write("Error: %s\n" % e)
+    main_loop.quit()
+
+def scan_timeout_cb(device):
+    peers = device.get_peers()
+    if len(peers) == 0:
+        main_loop.quit()
+        sys.exit("No peer found")
+
+    print("\n   {:20} {:30} {:3} {:30}".format("MAC", "Name", "Sig", "Wfd-IEs"));
+    for p in peers:
+        if p.get_wfd_ies() is not None:
+            ies = p.get_wfd_ies().get_data().hex()
+        else:
+            ies = ""
+        print("   {:20} {:30} {:3} {:30}".format(p.get_hw_address(),
+                                                 p.get_name(),
+                                                 p.get_strength(),
+                                                 ies))
+    print("")
+
+    # Connect to first peer
+    profile = create_profile('P2P-connection', peers[0].get_hw_address())
+    client.add_and_activate_connection2(profile,
+                                        device,
+                                        "/",
+                                        GLib.Variant('a{sv}', {}),
+                                        None,
+                                        activated_cb,
+                                        None)
+    print(" * Connecting to peer {} using profile '{}'".format(peers[0].get_hw_address(),
+                                                               profile.get_id()))
+
+def start_find_cb(device, async_result, user_data):
+    try:
+        r = device.start_find_finish(async_result)
+    except Exception as e:
+        sys.stderr.write("Error: %s\n" % e)
+        main_loop.quit()
+
+    print(" * Scanning on device {}...".format(device.get_iface()));
+    GLib.timeout_add(10000, scan_timeout_cb, device)
+
+if __name__ == "__main__":
+    client = NM.Client.new(None)
+    device = None
+
+    devices = client.get_devices()
+    for d in devices:
+        if d.get_device_type() == NM.DeviceType.WIFI_P2P:
+            device = d
+            break
+
+    if device is None:
+        sys.exit("No Wi-Fi P2P device found")
+
+    device.start_find(GLib.Variant('a{sv}', {}), None, start_find_cb, None)
+
+    main_loop = GLib.MainLoop()
+    main_loop.run()