pppd: Remove unused rcsid variables

[ppp.git] / pppd / magic.c

diff --git a/pppd/magic.c b/pppd/magic.c
index 18c00bb2f9b8bbed21f3d387405a2b357c6bd4d0..e8bb71fa109b4b7056687e733e694fbcb08e6d61 100644 (file)
--- a/pppd/magic.c
+++ b/pppd/magic.c
@@ -1,70 +1,121 @@
 /*
  * magic.c - PPP Magic Number routines.
  *
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
  *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For permission or any legal
+ *    details, please contact
+ *      Office of Technology Transfer
+ *      Carnegie Mellon University
+ *      5000 Forbes Avenue
+ *      Pittsburgh, PA  15213-3890
+ *      (412) 268-4387, fax: (412) 268-7395
+ *      tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by Computing Services
+ *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#ifndef lint
-static char rcsid[] = "$Id: magic.c,v 1.2 1994/09/01 00:25:19 paulus Exp $";
-#endif
+#define RCSID  "$Id: magic.c,v 1.11 2003/06/11 23:56:26 paulus Exp $"
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 #include <sys/types.h>
 #include <sys/time.h>
 
 #include "pppd.h"
 #include "magic.h"
 
-static uint32 next;            /* Next value to return */
-
-extern uint32 gethostid __ARGS((void));
-extern long random __ARGS((void));
-extern void srandom __ARGS((int));
 
+extern long mrand48 (void);
+extern void srand48 (long);
 
 /*
  * magic_init - Initialize the magic number generator.
  *
- * Computes first magic number and seed for random number generator.
  * Attempts to compute a random number seed which will not repeat.
- * The current method uses the current hostid and current time.
+ * The current method uses the current hostid, current process ID
+ * and current time, currently.
  */
-void magic_init()
+void
+magic_init(void)
 {
-    struct timeval tv;
+    long seed;
+    struct timeval t;
 
-    next = gethostid();
-    if (gettimeofday(&tv, NULL)) {
-       perror("gettimeofday");
-       exit(1);
-    }
-    next ^= (uint32) tv.tv_sec ^ (uint32) tv.tv_usec;
+    gettimeofday(&t, NULL);
+    seed = get_host_seed() ^ t.tv_sec ^ t.tv_usec ^ getpid();
+    srand48(seed);
+}
 
-    srandom((int) next);
+/*
+ * magic - Returns the next magic number.
+ */
+u_int32_t
+magic(void)
+{
+    return (u_int32_t) mrand48();
 }
 
+/*
+ * random_bytes - Fill a buffer with random bytes.
+ */
+void
+random_bytes(unsigned char *buf, int len)
+{
+       int i;
+
+       for (i = 0; i < len; ++i)
+               buf[i] = mrand48() >> 24;
+}
 
+#ifdef NO_DRAND48
 /*
- * magic - Returns the next magic number.
+ * Substitute procedures for those systems which don't have
+ * drand48 et al.
  */
-uint32 magic()
+
+double
+drand48(void)
 {
-    uint32 m;
+    return (double)random() / (double)0x7fffffffL; /* 2**31-1 */
+}
 
-    m = next;
-    next = (uint32) random();
-    return (m);
+long
+mrand48(void)
+{
+    return random();
+}
+
+void
+srand48(long seedval)
+{
+    srandom((int)seedval);
 }
+
+#endif