reinstate these files with BSD-style copyright

[ppp.git] / pppd / eui64.h

diff --git a/pppd/eui64.h b/pppd/eui64.h
new file mode 100644 (file)
index 0000000..a9556e8
--- /dev/null
+++ b/pppd/eui64.h
@@ -0,0 +1,97 @@
+/*
+    eui64.h - EUI64 routines for IPv6CP.
+    Copyright (C) 1999  Tommi Komulainen <Tommi.Komulainen@iki.fi>
+
+    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 Tommi Komulainen.  The name of the author 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.
+
+    
+    $Id: eui64.h,v 1.5 2000/08/05 06:46:47 paulus Exp $
+*/
+
+#ifndef __EUI64_H__
+#define __EUI64_H__
+
+#if !defined(INET6)
+#error "this file should only be included when INET6 is defined"
+#endif /* not defined(INET6) */
+
+#if defined(SOL2)
+#include <netinet/in.h>
+
+typedef union {
+    uint8_t    e8[8];          /* lower 64-bit IPv6 address */
+    uint32_t   e32[2];         /* lower 64-bit IPv6 address */
+} eui64_t;
+
+/*
+ * Declare the two below, since in.h only defines them when _KERNEL
+ * is declared - which shouldn't be true when dealing with user-land programs
+ */
+#define        s6_addr8        _S6_un._S6_u8
+#define        s6_addr32       _S6_un._S6_u32
+
+#else /* else if not defined(SOL2) */
+
+/*
+ * TODO:
+ *
+ * Maybe this should be done by processing struct in6_addr directly...
+ */
+typedef union
+{
+    u_int8_t e8[8];
+    u_int16_t e16[4];
+    u_int32_t e32[2];
+} eui64_t;
+
+#endif /* defined(SOL2) */
+
+#define eui64_iszero(e)                (((e).e32[0] | (e).e32[1]) == 0)
+#define eui64_equals(e, o)     (((e).e32[0] == (o).e32[0]) && \
+                               ((e).e32[1] == (o).e32[1]))
+#define eui64_zero(e)          (e).e32[0] = (e).e32[1] = 0;
+
+#define eui64_copy(s, d)       memcpy(&(d), &(s), sizeof(eui64_t))
+
+#define eui64_magic(e)         do {                    \
+                               (e).e32[0] = magic();   \
+                               (e).e32[1] = magic();   \
+                               (e).e8[0] &= ~2;        \
+                               } while (0)
+#define eui64_magic_nz(x)      do {                            \
+                               eui64_magic(x);                 \
+                               } while (eui64_iszero(x))
+#define eui64_magic_ne(x, y)   do {                            \
+                               eui64_magic(x);                 \
+                               } while (eui64_equals(x, y))
+
+#define eui64_get(ll, cp)      do {                            \
+                               eui64_copy((*cp), (ll));        \
+                               (cp) += sizeof(eui64_t);        \
+                               } while (0)
+
+#define eui64_put(ll, cp)      do {                            \
+                               eui64_copy((ll), (*cp));        \
+                               (cp) += sizeof(eui64_t);        \
+                               } while (0)
+
+#define eui64_set32(e, l)      do {                    \
+                               (e).e32[0] = 0;         \
+                               (e).e32[1] = htonl(l);  \
+                               } while (0)
+#define eui64_setlo32(e, l)    eui64_set32(e, l)
+
+char *eui64_ntoa __P((eui64_t));       /* Returns ascii representation of id */
+
+#endif /* __EUI64_H__ */
+