src/obj.vala

   1 /*
   2  * obj.vala
   3  *
   4  * Authored by Michael 'Mickey' Lauer <mlauer@vanille-media.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  19  *
  20  */
  21
  22 //===========================================================================
  23 using GLib;
  24 using CONST;
  25
  26
  27 //===========================================================================
  28 string[] stringListToArray( List<string>? theList )
  29 {
  30     var res = new string[theList.length()];
  31     int counter = 0;
  32     foreach ( string el in theList )
  33     {
  34         res[counter] = el;
  35         counter++;
  36     }
  37     return res;
  38 }
  39
  40
  41 //===========================================================================
  42 public class Introspection : Object
  43 {
  44     private string[] _xmldata;
  45
  46     public List<string> interfaces;
  47     public List<string> nodes;
  48
  49     public Introspection( string xmldata )
  50     {
  51         debug( "introspection object created" );
  52         _xmldata = xmldata.split( "\n" );
  53
  54         foreach ( string line in _xmldata )
  55         {
  56             //debug( "dealing with line '%s'", line );
  57             int res = 0;
  58             string name;
  59             res = line.scanf( "  <node name=\"%a[a-zA-Z0-9_]\"/>", out name );
  60             if ( res == 1 )
  61             {
  62                 nodes.append( name );
  63                 message( "object has node '%s'", name );
  64             }
  65             res = line.scanf( "  <interface name=\"%a[a-zA-Z0-9_.]\">", out name );
  66             if ( res == 1 )
  67             {
  68                 message( "object supports interface '%s'", name );
  69                 interfaces.append( name );
  70             }
  71         }
  72     }
  73 }
  74
  75 //===========================================================================
  76 [DBus (name = "org.freesmartphone.DBus")]
  77 public class Server : Object
  78 {
  79     DBus.Connection conn;
  80     dynamic DBus.Object dbus;
  81
  82     construct
  83     {
  84         try
  85         {
  86             debug( "server object created" );
  87             conn = DBus.Bus.get( DBus.BusType.SYSTEM );
  88             dbus = conn.get_object( DBUS_BUS_NAME, DBUS_OBJ_PATH, DBUS_INTERFACE );
  89         } catch (DBus.Error e) {
  90             error( e.message );
  91         }
  92     }
  93
  94     public string[]? ListBusNames()
  95     {
  96         string[] names = null;
  97         try {
  98             names = dbus.ListNames();
  99         } catch (DBus.Error e) {
 100             error( e.message );
 101             return names;
 102         } catch {
 103             return names;
 104         }
 105         return names;
 106     }
 107
 108     public string[] ListObjectPaths( string? busname ) throws DBus.Error
 109     {
 110         //
 111         // Check whether the given busname is present on the bus
 112         //
 113         var paths = new List<string>();
 114         var existing_busnames = this.ListBusNames();
 115         bool found = false;
 116         foreach ( string name in existing_busnames )
 117         {
 118             if ( busname == name )
 119             {
 120                 found = true;
 121                 break;
 122             }
 123         }
 124         if ( !found )
 125         {
 126             message( "requested busname '%s' not found.", busname );
 127             // FIXME return a dbus error?
 128             return stringListToArray( paths );
 129         }
 130         listObjectPaths( ref paths, busname, "/" );
 131         return stringListToArray( paths );
 132     }
 133
 134     private void listObjectPaths( ref List<string> paths, string busname, string objname ) throws DBus.Error
 135     {
 136         debug( "listObjectPaths: %s, %s", busname, objname );
 137         dynamic DBus.Object obj = conn.get_object( busname, objname, DBUS_INTERFACE_INTROSPECTABLE );
 138         Introspection data = new Introspection( obj.Introspect() );
 139         if ( data.interfaces.length() > 1 ) // we don't count the introspection interface that is always present
 140             paths.append( objname );
 141         if ( data.nodes.length() > 0 )
 142             foreach ( string node in data.nodes )
 143             {
 144                 if ( objname == "/" )
 145                     listObjectPaths( ref paths, busname, objname+node );
 146                 else
 147                     listObjectPaths( ref paths, busname, objname+"/"+node );
 148             }
 149     }
 150
 151     public string[] ListObjectsByInterface( string busname, string iface ) throws DBus.Error
 152     {
 153         //
 154         // Check whether the given busname is present on the bus
 155         //
 156         var paths = new List<string>();
 157         var existing_busnames = this.ListBusNames();
 158         bool found = false;
 159         foreach ( string name in existing_busnames )
 160         {
 161             if ( busname == name )
 162             {
 163                 found = true;
 164                 break;
 165             }
 166         }
 167         if ( !found )
 168         {
 169             message( "requested busname '%s' not found.", busname );
 170             // FIXME return a dbus error
 171             return stringListToArray( paths );
 172         }
 173         listObjectsByInterface( ref paths, busname, "/", iface );
 174         return stringListToArray( paths );
 175     }
 176
 177     private void listObjectsByInterface( ref List<string> paths, string busname, string objname, string iface ) throws DBus.Error
 178     {
 179         debug( "listObjectsByInterface: %s, %s, %s", busname, objname, iface );
 180         dynamic DBus.Object obj = conn.get_object( busname, objname, DBUS_INTERFACE_INTROSPECTABLE );
 181         Introspection data = new Introspection( obj.Introspect() );
 182         if ( data.interfaces.length() > 1 ) // we don't count the introspection interface that is always present
 183             foreach ( string ifacename in data.interfaces )
 184             {
 185                 if ( ifacename == iface )
 186                     paths.append( objname );
 187             }
 188         if ( data.nodes.length() > 0 )
 189             foreach ( string node in data.nodes )
 190         {
 191             if ( objname == "/" )
 192                 listObjectsByInterface( ref paths, busname, objname+node, iface );
 193             else
 194                 listObjectsByInterface( ref paths, busname, objname+"/"+node, iface );
 195         }
 196     }
 197 }