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//
// Mono.Unix/UnixUserInfo.cs
//
// Authors:
// Jonathan Pryor (jonpryor@vt.edu)
//
// (C) 2004-2005 Jonathan Pryor
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Text;
using Mono.Unix;
namespace Mono.Unix {
public sealed class UnixUserInfo
{
private Native.Passwd passwd;
public UnixUserInfo (string user)
{
passwd = new Native.Passwd ();
Native.Passwd pw;
int r = Native.Syscall.getpwnam_r (user, passwd, out pw);
if (r != 0 || pw == null)
throw new ArgumentException (Locale.GetText ("invalid username"), "user");
}
[CLSCompliant (false)]
public UnixUserInfo (uint user)
{
passwd = new Native.Passwd ();
Native.Passwd pw;
int r = Native.Syscall.getpwuid_r (user, passwd, out pw);
if (r != 0 || pw == null)
throw new ArgumentException (Locale.GetText ("invalid user id"), "user");
}
public UnixUserInfo (long user)
{
passwd = new Native.Passwd ();
Native.Passwd pw;
int r = Native.Syscall.getpwuid_r (Convert.ToUInt32 (user), passwd, out pw);
if (r != 0 || pw == null)
throw new ArgumentException (Locale.GetText ("invalid user id"), "user");
}
public UnixUserInfo (Native.Passwd passwd)
{
this.passwd = CopyPasswd (passwd);
}
private static Native.Passwd CopyPasswd (Native.Passwd pw)
{
Native.Passwd p = new Native.Passwd ();
p.pw_name = pw.pw_name;
p.pw_passwd = pw.pw_passwd;
p.pw_uid = pw.pw_uid;
p.pw_gid = pw.pw_gid;
p.pw_gecos = pw.pw_gecos;
p.pw_dir = pw.pw_dir;
p.pw_shell = pw.pw_shell;
return p;
}
public string UserName {
get {return passwd.pw_name;}
}
public string Password {
get {return passwd.pw_passwd;}
}
public long UserId {
get {return passwd.pw_uid;}
}
public UnixGroupInfo Group {
get {return new UnixGroupInfo (passwd.pw_gid);}
}
public long GroupId {
get {return passwd.pw_gid;}
}
public string GroupName {
get {return Group.GroupName;}
}
public string RealName {
get {return passwd.pw_gecos;}
}
public string HomeDirectory {
get {return passwd.pw_dir;}
}
public string ShellProgram {
get {return passwd.pw_shell;}
}
public override int GetHashCode ()
{
return passwd.GetHashCode ();
}
public override bool Equals (object obj)
{
if (obj == null || GetType () != obj.GetType())
return false;
return passwd.Equals (((UnixUserInfo) obj).passwd);
}
public override string ToString ()
{
return passwd.ToString ();
}
public static UnixUserInfo GetRealUser ()
{
return new UnixUserInfo (GetRealUserId ());
}
public static long GetRealUserId ()
{
return Native.Syscall.getuid ();
}
// I would hope that this is the same as GetCurrentUserName, but it is a
// different syscall, so who knows.
public static string GetLoginName ()
{
StringBuilder buf = new StringBuilder (4);
int r;
do {
buf.Capacity *= 2;
r = Native.Syscall.getlogin_r (buf, (ulong) buf.Capacity);
} while (r == (-1) && Native.Stdlib.GetLastError() == Native.Errno.ERANGE);
UnixMarshal.ThrowExceptionForLastErrorIf (r);
return buf.ToString ();
}
public Native.Passwd ToPasswd ()
{
return CopyPasswd (passwd);
}
public static UnixUserInfo[] GetLocalUsers ()
{
ArrayList entries = new ArrayList ();
lock (Native.Syscall.pwd_lock) {
if (Native.Syscall.setpwent () != 0) {
UnixMarshal.ThrowExceptionForLastError ();
}
try {
Native.Passwd p;
while ((p = Native.Syscall.getpwent()) != null)
entries.Add (new UnixUserInfo (p));
if (Native.Syscall.GetLastError () != (Native.Errno) 0)
UnixMarshal.ThrowExceptionForLastError ();
}
finally {
Native.Syscall.endpwent ();
}
}
return (UnixUserInfo[]) entries.ToArray (typeof(UnixUserInfo));
}
}
}
// vim: noexpandtab
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