pre-pad with random alphabetic letters instead of digit 0

diff --git a/lib/libc/stdio/mktemp.c b/lib/libc/stdio/mktemp.c
index 0d49e06..b1f7092 100644 (file)
--- a/lib/libc/stdio/mktemp.c
+++ b/lib/libc/stdio/mktemp.c
@@ -32,7 +32,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: mktemp.c,v 1.5 1997/01/20 07:46:56 graichen Exp $";
+static char rcsid[] = "$OpenBSD: mktemp.c,v 1.6 1997/02/07 13:01:24 deraadt Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/types.h>
@@ -82,14 +82,26 @@ _gettemp(path, doopen)
        extern int errno;
        register char *start, *trv;
        struct stat sbuf;
-       u_int pid;
+       int pid;
 
        pid = getpid();
-       for (trv = path; *trv; ++trv);          /* extra X's get set to 0's */
-       while (*--trv == 'X') {
-               *trv = (pid % 10) + '0';
+       for (trv = path; *trv; ++trv)
+               ;
+       --trv;
+       while (*trv == 'X' && pid != 0) {
+               *trv-- = (pid % 10) + '0';
                pid /= 10;
        }
+       while (*trv == 'X') {
+               char c;
+
+               pid = (arc4random() & 0xffff) % (26+26);
+               if (pid < 26)
+                       c = pid + 'A';
+               else
+                       c = (pid - 26) + 'a';
+               *trv-- = c;
+       }
 
        /*
         * check the target directory; if you have six X's and it