From 6e7d42f3e163e299ed7e7ec606e41ed282a90a84 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@courtesan.com>
Date: Wed, 25 May 1994 03:08:45 +0000
Subject: [PATCH] added -v flag and usage()

---
 visudo.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/visudo.c b/visudo.c
index fefdd79b0..5c59bc7cb 100644
--- a/visudo.c
+++ b/visudo.c
@@ -55,6 +55,7 @@ static char rcsid[] = "$Id$";
 #include <sys/file.h>
 
 #include "sudo.h"
+#include "version.h"
 
 #ifndef STDC_HEADERS
 extern char *getenv();
@@ -66,6 +67,7 @@ extern int errno, yylineno;
 /*
  * Globals
  */
+char **Argv;
 char buffer[BUFSIZ];
 char *sudoers = _PATH_SUDO_SUDOERS;
 char *sudoers_tmp_file = _PATH_SUDO_STMP;
@@ -74,6 +76,12 @@ int  status = 0,
 FILE *sudoers_tmp_fp=NULL,
      *sudoers_fp=NULL;
 
+/*
+ * local functions not visible outside visudo.c
+ */
+static void usage();
+
+
 static RETSIGTYPE Exit(sig)
     int sig;
 {
@@ -95,6 +103,21 @@ main(argc, argv)
     char * Editor;
 #endif /* ENV_EDITOR */
 
+    Argv = argv;
+
+    if (argc > 1) {
+	/*
+	 * print version string and exit if we got -v
+	 */
+	if (!strcmp(argv[1], "-v")) {
+	    (void) printf("visudo version %s\n", version);
+	    exit(0);
+	} else {
+	    usage();
+	}
+
+    }
+
     /*
      * handle the signals
      */
@@ -239,3 +262,17 @@ main(argc, argv)
 	exit(0);
     }
 }
+
+
+/**********************************************************************
+ *
+ * usage()
+ *
+ *  this function just gives you instructions and exits
+ */
+
+static void usage()
+{
+    (void) fprintf(stderr, "usage: %s [-v]\n", *Argv);
+    exit(1);
+}
-- 
2.40.0