1PYTHON-NETWORKMANAGER(1) python-networkmanager PYTHON-NETWORKMANAGER(1)
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6 python-networkmanager - python-networkmanager Documentation
7 NetworkManager provides a detailed and capable D-Bus interface on the
9 system bus. You can use this interface to query NetworkManager about
10 the overall state of the network and details of network devices like
11 current IP addresses or DHCP options, and to configure, activate and
12 deactivate network connections.
13 python-networkmanager takes this D-Bus interface and wraps D-Bus inter‐
15 faces in classes and D-Bus methods and properties in their python
16 equivalents.
17
19 All the code is contained in one module: NetworkManager. Using it is as
20 simple as you think it is:
21 >>> import NetworkManager
23 >>> NetworkManager.NetworkManager.Version
24 '1.2.0'
25 NetworkManager exposes a lot of information via D-Bus and also allows
27 full control of network settings. The full D-Bus interface can be found
28 on NetworkManager project website. All interfaces listed there have
29 been wrapped in classes as listed below.
30 NetworkManager.const(prefix, value)
32 Many of NetworkManagers D-Bus methods expect or return numeric con‐
34 stants, for which there are enums in the C source code. These con‐
35 stants, such as NM_STATE_CONNECTED_GLOBAL, can all be found in the
36 NetworkManager module as well. The const() function can help you trans‐
37 late them to text. For example:
38 >>> NetworkManager.const('state', 40)
40 'connecting'
41 >>> NetworkManager.const('device_type', 2)
42 'wifi'
43
45 class NetworkManager.ObjectVanished
46 This Exception will be raised when you try to call a method or access a
48 property on a dbus object that no longer exists. Objects can go missing
49 if devices are removed, connections are disabled or NetworkManager is
50 restarted.
51 class NetworkManager.NMDbusInterface
53 This is the base class of all classes below. It handles the marshalling
55 of data and the automatic creation of properties and methods.
56 Each property, method and signal exposed via the D-Bus interface is au‐
58 tomatically mirrored as an attribute of the actual classes. Moreover,
59 the data is made slightly more usable by performing the following
60 transformations on received and sent data.
61 • IP addresses are returned as strings of the form 1.2.3.4 instead of
63 network byte ordered integers.
64 • Route metrics are returned in host byte order, so you can use them as
66 integers.
67 • Mac addresses and BSSIDs are always returned as strings of the form
69 00:11:22:33:44:55 instead of byte sequences.
70 • Wireless SSID's are returned as strings instead of byte sequences.
72 They will be decoded as UTF-8 data, so using any other encoding for
73 your SSID will result in errors.
74 • DHCP options are turned into integers or booleans as appropriate
76 • Signals can be connected to using calls to OnSignalName functions.
78 Here's a short example to illustrate:
80 >>> import NetworkManager
82 >>> NetworkManager.NetworkManager.Version
83 '1.4.4'
84 >>> NetworkManager.NetworkManager.GetPermissions()
85 {'org.freedesktop.NetworkManager.checkpoint-rollback': 'auth',
86 'org.freedesktop.NetworkManager.enable-disable-network': 'yes',
87 ...}
88 # Must have a mainloop to use signals
89 >>> import dbus.mainloop.glib
90 >>> dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
91 >>> NetworkManager.NetworkManager.OnStateChanged(handle_state_change)
92 class NetworkManager.TransientNMDbusInterface
94 Subclasses of this class, which are ActiveConnection, NSP, IP[46]Config
96 and DHCP[46]Config never survive a NetworkManager restart. Other ob‐
97 jects may survive a restart, but get a different object path.
98 class NetworkManager.NetworkManager
100 The main NetworkManager object; the NetworkManager.Networkmanager ob‐
102 ject is actually the singleton instance of this class.
103 class NetworkManager.Settings
105 The Settings object, which can be used to add connections, list connec‐
107 tions or update your hostname; the NetworkManager.Settings object is
108 actually the singleton instance of this class.
109 class NetworkManager.AgentManager
111 The AgentManager object, whose methods you'll need to call when imple‐
113 menting a secrets agent; the NetworkManager.AgentManager object is ac‐
114 tually the singleton instance of this class.
115 class NetworkManager.Connection
117 Connection objects represent network configurations configured by the
119 user.
120 class NetworkManager.ActiveConnection
122 class NetworkManager.VPNConnection
124 Active connections are represented by ActiveConnection objects.
126 VPNConnection is a subclass for active VPN connection that implements
127 both the Connection.Active and VPN.Connection interfaces.
128 class NetworkManager.IP4Config
130 class NetworkManager.IP6Config
132 class NetworkManager.DHCP4Config
134 class NetworkManager.DHCP6Config
136 Active network connections and devices can all have IPv4, IPv6, IPv4
138 DHCP and IPv6 DHCP information attached to them, which is represented
139 by instances of these classes.
140 class NetworkManager.AccessPoint
142 Wifi Accesspoints, as visibly by any 802.11 wifi interface.
144 class NetworkManager.NSP
146 Wimax Network Service Providers.
148 class NetworkManager.Device
150 All device classes implement the Device interface, which gives you ac‐
152 cess to basic device properties. Note that you will never see instances
153 of this class, only of its devicetype-specific subclasses which im‐
154 pletemnt not only the Device interface but also their own specific in‐
155 terface. Supported device types are Adsl, Bluetooth, Bond, Bridge,
156 Generic, Infiniband, IPTunnel, Macvlan, Modem, OlpcMesh, Team, Tun,
157 Veth, Vlan, Vxlan, Wimax, Wired and Wireless
158 class NetworkManager.SecretAgent
160 The NetworkManager daemon can ask separate programs, called agents, for
162 secrets if it needs them. The NetworkManager applet and the nmcli com‐
163 mand-line tool are examples of such agents. You can also write such
164 agents by subclassing the SecretAgent class and providing a GetSecrets
165 method as in the following example, which returns a static password for
166 each secret:
167 import dbus.mainloop.glib
169 import GObject
170 import NetworkManager
171 class MyAgent(NetworkManager.SecretAgent):
173 def GetSecrets(self, settings, connection, setting_name, hints, flags):
174 return {setting_name: {'secrets': {'password': 'TopSecret!'}}}
175 agent = MyAgent()
177 dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
178 Gobject.MainLoop().run()
179 Beware that NetworkManager will ask each agent in turn in what is in
181 essence random order. Except it will prioritize the program that acti‐
182 vated the connection. So if you want to make sure your agent is called
183 first, activate the connection from the same application.
184
186 Dennis Kaarsemaker
187
189 2011-2021, Dennis Kaarsemaker
1902.2 Jul 23, 2021 PYTHON-NETWORKMANAGER(1)