1 //
2 // Mono.Unix.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.Unix
35 {
36 #pragma warning disable 649
37 	internal struct PeerCredData {
38 		public int pid;
39 		public int uid;
40 		public int gid;
41 	}
42 #pragma warning restore 649
43 
44 	public class PeerCred
45 	{
46 		/* Make sure this doesn't clash with anything in
47 		 * SocketOptionName, and keep it synchronised with the
48 		 * runtime
49 		 */
50 		private const int so_peercred=10001;
51 		private PeerCredData data;
52 
PeerCred(Socket sock)53 		public PeerCred (Socket sock) {
54 			if (sock.AddressFamily != AddressFamily.Unix) {
55 				throw new ArgumentException ("Only Unix sockets are supported", "sock");
56 			}
57 
58 			data = (PeerCredData)
59 				sock.GetSocketOption (SocketOptionLevel.Socket, (SocketOptionName)so_peercred);
60 		}
61 
62 		public int ProcessID {
63 			get {
64 				return(data.pid);
65 			}
66 		}
67 
68 		public int UserID {
69 			get {
70 				return(data.uid);
71 			}
72 		}
73 
74 		public int GroupID {
75 			get {
76 				return(data.gid);
77 			}
78 		}
79 	}
80 }
81 
82