Fix for a bug identied by Harald Kuthe, when using many interfaces (29

in this case) the order was incorrect and there were duplicate entries.

1 files changed, 13 insertions, 18 deletions

diff --git a/libbb/interface.c b/libbb/interface.c
index 2589eec49..f3655b0e0 100644
--- a/libbb/interface.c
+++ b/libbb/interface.c
@@ -15,7 +15,7 @@
  *              that either displays or sets the characteristics of
  *              one or more of the system's networking interfaces.
  *
- * Version:     $Id: interface.c,v 1.22 2004/04/14 17:57:11 andersen Exp $
+ * Version:     $Id: interface.c,v 1.23 2004/07/23 01:49:46 bug1 Exp $
  *
  * Author:      Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
  *              and others.  Copyright 1993 MicroWalt Corporation
@@ -889,30 +889,25 @@ static int sockets_open(int family)
 }
 
 /* like strcmp(), but knows about numbers */
-static int nstrcmp(const char *astr, const char *b)
+static int nstrcmp(const char *a, const char *b)
 {
-        const char *a = astr;
+        const char *a_ptr = a;
+        const char *b_ptr = b;
 
         while (*a == *b) {
-                if (*a == '\0')
+                if (*a == '\0') {
                         return 0;
+                }
+                if (!isdigit(*a) && isdigit(*(a+1))) {
+                        a_ptr = a+1;
+                        b_ptr = b+1;
+                }
                 a++;
                 b++;
         }
-        if (isdigit(*a)) {
-                if (!isdigit(*b))
-                        return -1;
-                while (a > astr) {
-                        a--;
-                        if (!isdigit(*a)) {
-                                a++;
-                                break;
-                        }
-                        if (!isdigit(*b))
-                                return -1;
-                        b--;
-                }
-                return atoi(a) > atoi(b) ? 1 : -1;
+
+        if (isdigit(*a) && isdigit(*b)) {
+                return atoi(a_ptr) > atoi(b_ptr) ? 1 : -1;
         }
         return *a - *b;
 }