mono/io-layer/security.c

   1 /*
   2  * security.c:  Security
   3  *
   4  * Author:
   5  *      Sebastien Pouliot  <sebastien@ximian.com>
   6  *
   7  * (C) 2004 Novell (http://www.novell.com)
   8  */
   9
  10 #include <config.h>
  11 #include <mono/io-layer/io-layer.h>
  12
  13 #include <pwd.h>
  14 #include <string.h>
  15 #include <sys/types.h>
  16 #include <unistd.h>
  17
  18
  19 /* Disclaimers */
  20
  21 #if defined(__GNUC__)
  22 #ifndef HAVE_GETRESUID
  23         #warning getresuid not supported. WindowsImpersonationContext wont work
  24 #endif
  25 #ifndef HAVE_SETRESUID
  26         #warning setresuid not supported. WindowsImpersonationContext wont work
  27 #endif
  28 #endif
  29
  30
  31 gboolean
  32 ImpersonateLoggedOnUser (gpointer handle)
  33 {
  34         uid_t token = (uid_t) handle;
  35 #ifdef HAVE_SETRESUID
  36         if (setresuid (-1, token, getuid ()) < 0)
  37                 return FALSE;
  38 #endif
  39         return (geteuid () == token);
  40 }
  41
  42
  43 gboolean RevertToSelf (void)
  44 {
  45 #ifdef HAVE_GETRESUID
  46         uid_t ruid, euid;
  47 #endif
  48         uid_t suid = -1;
  49
  50 #ifdef HAVE_GETRESUID
  51         if (getresuid (&ruid, &euid, &suid) < 0)
  52                 return FALSE;
  53 #endif
  54 #ifdef HAVE_SETRESUID
  55         if (setresuid (-1, suid, -1) < 0)
  56                 return FALSE;
  57 #endif
  58         return (geteuid () == suid);
  59 }
  60