mcs/class/Mono.Posix/Mono.Unix/UnixUserInfo.cs

   1 //
   2 // Mono.Unix/UnixUserInfo.cs
   3 //
   4 // Authors:
   5 //   Jonathan Pryor (jonpryor@vt.edu)
   6 //
   7 // (C) 2004-2005 Jonathan Pryor
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections;
  31 using System.Text;
  32 using Mono.Unix;
  33
  34 namespace Mono.Unix {
  35
  36         public sealed class UnixUserInfo
  37         {
  38                 private Native.Passwd passwd;
  39
  40                 public UnixUserInfo (string user)
  41                 {
  42                         passwd = new Native.Passwd ();
  43                         Native.Passwd pw;
  44                         int r = Native.Syscall.getpwnam_r (user, passwd, out pw);
  45                         if (r != 0 || pw == null)
  46                                 throw new ArgumentException (Locale.GetText ("invalid username"), "user");
  47                 }
  48
  49                 [CLSCompliant (false)]
  50                 public UnixUserInfo (uint user)
  51                 {
  52                         passwd = new Native.Passwd ();
  53                         Native.Passwd pw;
  54                         int r = Native.Syscall.getpwuid_r (user, passwd, out pw);
  55                         if (r != 0 || pw == null)
  56                                 throw new ArgumentException (Locale.GetText ("invalid user id"), "user");
  57                 }
  58
  59                 public UnixUserInfo (long user)
  60                 {
  61                         passwd = new Native.Passwd ();
  62                         Native.Passwd pw;
  63                         int r = Native.Syscall.getpwuid_r (Convert.ToUInt32 (user), passwd, out pw);
  64                         if (r != 0 || pw == null)
  65                                 throw new ArgumentException (Locale.GetText ("invalid user id"), "user");
  66                 }
  67
  68                 [Obsolete ("Use UnixUserInfo (Mono.Unix.Native.Passwd)", true)]
  69                 public UnixUserInfo (Passwd passwd)
  70                 {
  71                         this.passwd = new Native.Passwd ();
  72                         this.passwd.pw_name   = passwd.pw_name;
  73                         this.passwd.pw_passwd = passwd.pw_passwd;
  74                         this.passwd.pw_uid    = passwd.pw_uid;
  75                         this.passwd.pw_gid    = passwd.pw_gid;
  76                         this.passwd.pw_gecos  = passwd.pw_gecos;
  77                         this.passwd.pw_dir    = passwd.pw_dir;
  78                         this.passwd.pw_shell  = passwd.pw_shell;
  79                 }
  80
  81                 public UnixUserInfo (Native.Passwd passwd)
  82                 {
  83                         this.passwd = passwd;
  84                 }
  85
  86                 public string UserName {
  87                         get {return passwd.pw_name;}
  88                 }
  89
  90                 public string Password {
  91                         get {return passwd.pw_passwd;}
  92                 }
  93
  94                 public long UserId {
  95                         get {return passwd.pw_uid;}
  96                 }
  97
  98                 public UnixGroupInfo Group {
  99                         get {return new UnixGroupInfo (passwd.pw_gid);}
 100                 }
 101
 102                 public long GroupId {
 103                         get {return passwd.pw_gid;}
 104                 }
 105
 106                 public string GroupName {
 107                         get {return Group.GroupName;}
 108                 }
 109
 110                 public string RealName {
 111                         get {return passwd.pw_gecos;}
 112                 }
 113
 114                 public string HomeDirectory {
 115                         get {return passwd.pw_dir;}
 116                 }
 117
 118                 public string ShellProgram {
 119                         get {return passwd.pw_shell;}
 120                 }
 121
 122                 public override int GetHashCode ()
 123                 {
 124                         return passwd.GetHashCode ();
 125                 }
 126
 127                 public override bool Equals (object obj)
 128                 {
 129                         if (obj == null || GetType () != obj.GetType())
 130                                 return false;
 131                         return passwd.Equals (((UnixUserInfo) obj).passwd);
 132                 }
 133
 134                 public override string ToString ()
 135                 {
 136                         return passwd.ToString ();
 137                 }
 138
 139                 public static UnixUserInfo GetRealUser ()
 140                 {
 141                         return new UnixUserInfo (GetRealUserId ());
 142                 }
 143
 144                 public static long GetRealUserId ()
 145                 {
 146                         return Native.Syscall.getuid ();
 147                 }
 148
 149                 // I would hope that this is the same as GetCurrentUserName, but it is a
 150                 // different syscall, so who knows.
 151                 public static string GetLoginName ()
 152                 {
 153                         StringBuilder buf = new StringBuilder (4);
 154                         int r;
 155                         do {
 156                                 buf.Capacity *= 2;
 157                                 r = Native.Syscall.getlogin_r (buf, (ulong) buf.Capacity);
 158                         } while (r == (-1) && Native.Stdlib.GetLastError() == Native.Errno.ERANGE);
 159                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 160                         return buf.ToString ();
 161                 }
 162
 163                 public Native.Passwd ToPasswd ()
 164                 {
 165                         return passwd;
 166                 }
 167
 168                 public static UnixUserInfo[] GetLocalUsers ()
 169                 {
 170                         ArrayList entries = new ArrayList ();
 171                         lock (Native.Syscall.pwd_lock) {
 172                                 if (Native.Syscall.setpwent () != 0) {
 173                                         UnixMarshal.ThrowExceptionForLastError ();
 174                                 }
 175                                 try {
 176                                         Native.Passwd p;
 177                                         while ((p = Native.Syscall.getpwent()) != null)
 178                                                 entries.Add (new UnixUserInfo (p));
 179                                         if (Native.Syscall.GetLastError () != (Native.Errno) 0)
 180                                                 UnixMarshal.ThrowExceptionForLastError ();
 181                                 }
 182                                 finally {
 183                                         Native.Syscall.endpwent ();
 184                                 }
 185                         }
 186                         return (UnixUserInfo[]) entries.ToArray (typeof(UnixUserInfo));
 187                 }
 188         }
 189 }
 190
 191 // vim: noexpandtab