[src/trunk]: src/gnu/dist/sendmail/test sendmail 8.10.2

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/55401954fa04
branches:  trunk
changeset: 487843:55401954fa04
user:      itojun <itojun%NetBSD.org@localhost>
date:      Tue Jun 13 16:54:40 2000 +0000

description:
sendmail 8.10.2

diffstat:

 gnu/dist/sendmail/test/t_setuid.c |  101 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 101 insertions(+), 0 deletions(-)

diffs (105 lines):

diff -r 625af778e796 -r 55401954fa04 gnu/dist/sendmail/test/t_setuid.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/gnu/dist/sendmail/test/t_setuid.c Tue Jun 13 16:54:40 2000 +0000
@@ -0,0 +1,101 @@
+/*
+**  This program checks to see if your version of setuid works.
+**  Compile it, make it setuid root, and run it as yourself (NOT as
+**  root).
+**
+**     NOTE:  This should work everywhere, but Linux has the ability
+**     to use the undocumented setcap() call to make this break.
+**
+**  Compilation is trivial -- just "cc t_setuid.c".  Make it setuid,
+**  root and then execute it as a non-root user.
+*/
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#ifndef lint
+static char id[] = "@(#)Id: t_setuid.c,v 8.2.4.1 2000/05/31 00:34:30 gshapiro Exp";
+#endif /* ! lint */
+
+static void
+printuids(str, r, e)
+       char *str;
+       int r, e;
+{
+       printf("%s (should be %d/%d): r/euid=%d/%d\n", str, r, e,
+               getuid(), geteuid());
+}
+
+int
+main(argc, argv)
+       int argc;
+       char **argv;
+{
+       int fail = 0;
+       uid_t realuid = getuid();
+
+       printuids("initial uids", realuid, 0);
+
+       if (geteuid() != 0)
+       {
+               printf("SETUP ERROR: re-run setuid root\n");
+               exit(1);
+       }
+
+       if (getuid() == 0)
+       {
+               printf("SETUP ERROR: must be run by a non-root user\n");
+               exit(1);
+       }
+
+       if (setuid(1) < 0)
+               printf("setuid(1) failure\n");
+       printuids("after setuid(1)", 1, 1);
+
+       if (geteuid() != 1)
+       {
+               fail++;
+               printf("MAYDAY!  Wrong effective uid\n");
+       }
+
+       if (getuid() != 1)
+       {
+               fail++;
+               printf("MAYDAY!  Wrong real uid\n");
+       }
+
+
+       /* do activity here */
+       if (setuid(0) == 0)
+       {
+               fail++;
+               printf("MAYDAY!  setuid(0) succeeded (should have failed)\n");
+       }
+       else
+       {
+               printf("setuid(0) failed (this is correct)\n");
+       }
+       printuids("after setuid(0)", 1, 1);
+
+       if (geteuid() != 1)
+       {
+               fail++;
+               printf("MAYDAY!  Wrong effective uid\n");
+       }
+       if (getuid() != 1)
+       {
+               fail++;
+               printf("MAYDAY!  Wrong real uid\n");
+       }
+       printf("\n");
+
+       if (fail)
+       {
+               printf("\nThis system cannot use setuid (maybe use setreuid)\n");
+               exit(1);
+       }
+
+       printf("\nIt is safe to use setuid on this system\n");
+       exit(0);
+}