Re: Error when trying to access nm with vala and gdbus

[Florent Thévenet]

Le jeudi 12 janvier 2012 à 19:01 -0600, Dan Williams a écrit :
  
  conn = Bus.get_proxy_sync(BusType.SYSTEM,
  org.freedesktop.NetworkManager.Settings.Connection,
  /org/freedesktop/NetworkManager/Settings/15);
 
 Here's the problem: you still need to use the NetworkManager dbus
 service name, which is org.freedesktop.NetworkManager.  What you're
 passing in here looks like the *interface* name you want to use when
 talking to the /org/freedesktop/NetworkManager/Settings/15 object.
 
 So remove the .Settings.Connection bit from that and you should get
 your proxy.  The interface name is already specified at the top where
 you define the interface for the Connection object.
 
 Dan

Ok I modified it and it works, next time I'll read the documentation
better :-)

Thanks a lot
Florent


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Error when trying to access nm with vala and gdbus

[Florent Thévenet]

Hi everyone,

I'm writing a program to change the evolution smtp server according to
the network I'm connected to, implemented in Vala

The simpler solution I found to talk to networkmanager is over dbus,
here is the code I use:


[DBus (name = org.freedesktop.NetworkManager)]
interface NetworkManager : Object {
[DBus (name = state)]
public abstract uint state () throws IOError;
public signal void state_changed(uint state);
}

[DBus (name = org.freedesktop.NetworkManager.Settings.Connection)]
interface Connection : Object {
public abstract HashTablestring, HashTablestring, Variant
get_settings() throws IOError; 
}

[DBus (name = org.freedesktop.NetworkManager.Connection.Active)]
interface NetworkManagerActiveConnection : Object {
}

void main() {
var loop = new MainLoop();
//watch state change

//get connection infos

//get active connection
NetworkManager nm;
Connection conn;

nm = Bus.get_proxy_sync(BusType.SYSTEM,
org.freedesktop.NetworkManager, /org/freedesktop/NetworkManager);
nm.state_changed.connect((s) = {
stdout.printf(state changed : %d\n, s);
});

conn = Bus.get_proxy_sync(BusType.SYSTEM,
org.freedesktop.NetworkManager.Settings.Connection,
/org/freedesktop/NetworkManager/Settings/15);

var result = conn.get_settings();
var v = result.get(connection).get(id);
stdout.printf(%u\n%s, nm.state(), v.get_string());

loop.run();
}


The signal part works great, but I get an error when trying to get a
proxy for org.freedesktop.NetworkManager.Settings.Connection:


** (process:4271): CRITICAL **:
file /home/florent/Projets/smtp_switcher/nm_detection.vala.c: line 747:
unexpected error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown:
The name org.freedesktop.NetworkManager.Settings.Connection was not
provided by any .service files (g-dbus-error-quark, 2)


I'm using ubuntu 11.10, is there a solution or direct Vala bindings for
NetworkManager ?

Cheers
Florent


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Re: Error when trying to access nm with vala and gdbus

[Dan Williams]

On Thu, 2012-01-12 at 16:35 +0100, Florent Thévenet wrote:
 Hi everyone,
 
 I'm writing a program to change the evolution smtp server according to
 the network I'm connected to, implemented in Vala
 
 The simpler solution I found to talk to networkmanager is over dbus,
 here is the code I use:
 
 
 [DBus (name = org.freedesktop.NetworkManager)]
 interface NetworkManager : Object {
   [DBus (name = state)]
   public abstract uint state () throws IOError;
   public signal void state_changed(uint state);
 }
 
 [DBus (name = org.freedesktop.NetworkManager.Settings.Connection)]
 interface Connection : Object {
   public abstract HashTablestring, HashTablestring, Variant
 get_settings() throws IOError; 
 }
 
 [DBus (name = org.freedesktop.NetworkManager.Connection.Active)]
 interface NetworkManagerActiveConnection : Object {
 }
 
 void main() {
   var loop = new MainLoop();
 //watch state change
 
   //get connection infos
 
   //get active connection
   NetworkManager nm;
   Connection conn;
 
   nm = Bus.get_proxy_sync(BusType.SYSTEM,
 org.freedesktop.NetworkManager, /org/freedesktop/NetworkManager);
   nm.state_changed.connect((s) = {
   stdout.printf(state changed : %d\n, s);
   });
 
   conn = Bus.get_proxy_sync(BusType.SYSTEM,
 org.freedesktop.NetworkManager.Settings.Connection,
 /org/freedesktop/NetworkManager/Settings/15);

Here's the problem: you still need to use the NetworkManager dbus
service name, which is org.freedesktop.NetworkManager.  What you're
passing in here looks like the *interface* name you want to use when
talking to the /org/freedesktop/NetworkManager/Settings/15 object.

So remove the .Settings.Connection bit from that and you should get
your proxy.  The interface name is already specified at the top where
you define the interface for the Connection object.

Dan

   var result = conn.get_settings();
   var v = result.get(connection).get(id);
   stdout.printf(%u\n%s, nm.state(), v.get_string());
 
   loop.run();
 }
 
 
 The signal part works great, but I get an error when trying to get a
 proxy for org.freedesktop.NetworkManager.Settings.Connection:
 
 
 ** (process:4271): CRITICAL **:
 file /home/florent/Projets/smtp_switcher/nm_detection.vala.c: line 747:
 unexpected error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown:
 The name org.freedesktop.NetworkManager.Settings.Connection was not
 provided by any .service files (g-dbus-error-quark, 2)
 
 
 I'm using ubuntu 11.10, is there a solution or direct Vala bindings for
 NetworkManager ?
 
 Cheers
 Florent
 
 
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