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 #ifdef HAVE_PWD_H
  14 #include <pwd.h>
  15 #endif
  16
  17 #include <string.h>
  18 #include <sys/types.h>
  19 #include <sys/stat.h>
  20 #include <unistd.h>
  21
  22
  23 /* Disclaimers */
  24
  25 #if defined(__GNUC__)
  26 #ifndef HAVE_GETRESUID
  27         #warning getresuid not supported. WindowsImpersonationContext wont work
  28 #endif
  29 #ifndef HAVE_SETRESUID
  30         #warning setresuid not supported. WindowsImpersonationContext wont work
  31 #endif
  32 #endif
  33
  34
  35 gboolean
  36 ImpersonateLoggedOnUser (gpointer handle)
  37 {
  38         uid_t token = (uid_t) GPOINTER_TO_INT (handle);
  39 #ifdef HAVE_SETRESUID
  40         if (setresuid (-1, token, getuid ()) < 0)
  41                 return FALSE;
  42 #endif
  43         return (geteuid () == token);
  44 }
  45
  46
  47 gboolean RevertToSelf (void)
  48 {
  49 #ifdef HAVE_GETRESUID
  50         uid_t ruid, euid;
  51 #endif
  52         uid_t suid = -1;
  53
  54 #ifdef HAVE_GETRESUID
  55         if (getresuid (&ruid, &euid, &suid) < 0)
  56                 return FALSE;
  57 #endif
  58 #ifdef HAVE_SETRESUID
  59         if (setresuid (-1, suid, -1) < 0)
  60                 return FALSE;
  61 #else
  62         return TRUE;
  63 #endif
  64         return (geteuid () == suid);
  65 }
  66