Import sendmail 8.12.2

1 files changed, 119 insertions, 0 deletions

diff --git a/contrib/sendmail/test/t_setgid.c b/contrib/sendmail/test/t_setgid.c
new file mode 100644
index 0000000..dfe1805
--- /dev/null
+++ b/contrib/sendmail/test/t_setgid.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2001 Sendmail, Inc. and its suppliers.
+ *	All rights reserved.
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the sendmail distribution.
+ *
+ */
+
+/*
+**  This program checks to see if your version of setgid works.
+**  Compile it, make it set-group-ID guest, and run it as yourself (NOT as
+**  root and not as member of the group guest).
+**
+**  Compilation is trivial -- just "cc t_setgid.c".  Make it set-group-ID,
+**  guest 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_setgid.c,v 1.6 2001/09/23 03:35:41 ca Exp $";
+#endif /* ! lint */
+
+static void
+printgids(str, r, e)
+	char *str;
+	gid_t r, e;
+{
+	printf("%s (should be %d/%d): r/egid=%d/%d\n", str, (int) r, (int) e,
+	       (int) getgid(), (int) getegid());
+}
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int fail = 0;
+	int res;
+	gid_t realgid = getgid();
+	gid_t effgid = getegid();
+
+	printgids("initial gids", realgid, effgid);
+
+	if (effgid == realgid)
+	{
+		printf("SETUP ERROR: re-run set-group-ID guest\n");
+		exit(1);
+	}
+
+#if SM_CONF_SETREGID
+	res = setregid(effgid, effgid);
+#else /* SM_CONF_SETREGID */
+	res = setgid(effgid);
+#endif /* SM_CONF_SETREGID */
+
+	printf("setgid(%d)=%d %s\n", (int) effgid, res,
+		res < 0 ? "failure" : "ok");
+#if SM_CONF_SETREGID
+	printgids("after setregid()", effgid, effgid);
+#else /* SM_CONF_SETREGID */
+	printgids("after setgid()", effgid, effgid);
+#endif /* SM_CONF_SETREGID */
+
+	if (getegid() != effgid)
+	{
+		fail++;
+		printf("MAYDAY!  Wrong effective gid\n");
+	}
+
+	if (getgid() != effgid)
+	{
+		fail++;
+		printf("MAYDAY!  Wrong real gid\n");
+	}
+
+	/* do activity here */
+	if (setgid(0) == 0)
+	{
+		fail++;
+		printf("MAYDAY!  setgid(0) succeeded (should have failed)\n");
+	}
+	else
+	{
+		printf("setgid(0) failed (this is correct)\n");
+	}
+	printgids("after setgid(0)", effgid, effgid);
+
+	if (getegid() != effgid)
+	{
+		fail++;
+		printf("MAYDAY!  Wrong effective gid\n");
+	}
+	if (getgid() != effgid)
+	{
+		fail++;
+		printf("MAYDAY!  Wrong real gid\n");
+	}
+	printf("\n");
+
+	if (fail > 0)
+	{
+		printf("\nThis system cannot use %s to set the real gid to the effective gid\nand clear the saved gid.\n",
+#if SM_CONF_SETREGID
+			"setregid"
+#else /* SM_CONF_SETREGID */
+			"setgid"
+#endif /* SM_CONF_SETREGID */
+			);
+		exit(1);
+	}
+
+	printf("\nIt is possible to use setgid on this system\n");
+	exit(0);
+}