mcs/class/Mono.Posix/Mono.Posix/PeerCred.cs

   1 //
   2 // Mono.Posix.PeerCred: Peer credentials class for AF_UNIX sockets
   3 //
   4 // Authors:
   5 //      Dick Porter (dick@ximian.com)
   6 //
   7 // (C) 2004 Novell, Inc (http://www.novell.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Net.Sockets;
  33
  34 namespace Mono.Posix
  35 {
  36         public class PeerCred
  37         {
  38                 private struct PeerCredData {
  39                         public int pid;
  40                         public int uid;
  41                         public int gid;
  42                 }
  43
  44                 /* Make sure this doesn't clash with anything in
  45                  * SocketOptionName, and keep it synchronised with the
  46                  * runtime
  47                  */
  48                 private const int so_peercred=10001;
  49                 private PeerCredData data;
  50
  51                 public PeerCred (Socket sock) {
  52                         if (sock.AddressFamily != AddressFamily.Unix) {
  53                                 throw new ArgumentException ("Only Unix sockets are supported", "sock");
  54                         }
  55
  56                         data = (PeerCredData)sock.GetSocketOption (SocketOptionLevel.Socket, (SocketOptionName)so_peercred);
  57                 }
  58
  59                 public int ProcessID {
  60                         get {
  61                                 return(data.pid);
  62                         }
  63                 }
  64
  65                 public int UserID {
  66                         get {
  67                                 return(data.uid);
  68                         }
  69                 }
  70
  71                 public int GroupID {
  72                         get {
  73                                 return(data.gid);
  74                         }
  75                 }
  76         }
  77 }
  78