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/*
* Copyright (C) 1999 Yasuhiro Ohara
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#if 0
#include <zebra.h>
#include "log.h"
#include "prefix.h"
#include "memory.h"
#include "linklist.h"
#include "ospf6_prefix.h"
#else /*0*/
#include "ospf6d.h"
#endif /*0*/
struct ospf6_prefix *
ospf6_prefix_create (u_int8_t options, u_int16_t metric, struct prefix_ipv6 *p)
{
struct prefix_ipv6 prefix;
struct ospf6_prefix *o6p;
size_t size;
/* copy prefix and apply mask */
prefix_copy ((struct prefix *) &prefix, (struct prefix *) p);
apply_mask_ipv6 (&prefix);
size = OSPF6_PREFIX_SPACE (prefix.prefixlen) + sizeof (struct ospf6_prefix);
o6p = (struct ospf6_prefix *) XMALLOC (MTYPE_OSPF6_PREFIX, size);
if (! o6p)
zlog_warn ("Can't allocate memory for ospf6 prefix: size: %d", size);
else
memset (o6p, 0, size);
o6p->prefix_length = prefix.prefixlen;
o6p->prefix_options = options;
o6p->prefix_metric = htons (metric);
memcpy (o6p + 1, &prefix.prefix, OSPF6_PREFIX_SPACE (prefix.prefixlen));
return o6p;
}
void
ospf6_prefix_delete (struct ospf6_prefix *p)
{
XFREE (MTYPE_OSPF6_PREFIX, p);
}
int
ospf6_prefix_issame (struct ospf6_prefix *p1, struct ospf6_prefix *p2)
{
if (p1->prefix_length != p2->prefix_length)
return 0;
if (memcmp (&p1->u, &p2->u, sizeof (p1->u)))
return 0;
if (memcmp (p1 + 1, p2 + 1, OSPF6_PREFIX_SPACE (p1->prefix_length)))
return 0;
return 1;
}
struct ospf6_prefix *
ospf6_prefix_lookup (list l, struct ospf6_prefix *p1)
{
listnode node;
struct ospf6_prefix *p2;
for (node = listhead (l); node; nextnode (node))
{
p2 = (struct ospf6_prefix *) getdata (node);
if (ospf6_prefix_issame (p1, p2))
return p2;
}
return NULL;
}
/* add a copy of given prefix to the list */
void
ospf6_prefix_add (list l, struct ospf6_prefix *p)
{
struct ospf6_prefix *add;
add = (struct ospf6_prefix *) XMALLOC (MTYPE_OSPF6_PREFIX,
OSPF6_PREFIX_SIZE (p));
if (add == NULL)
{
zlog_warn ("Can't allocate memory for ospf6 prefix");
return;
}
else
memcpy (add, p, OSPF6_PREFIX_SIZE (p));
if (ospf6_prefix_lookup (l, add))
{
ospf6_prefix_delete (add);
return;
}
listnode_add (l, add);
}
void
ospf6_prefix_remove (list l, struct ospf6_prefix *p)
{
struct ospf6_prefix *rem;
rem = ospf6_prefix_lookup (l, p);
if (rem)
{
listnode_delete (l, rem);
ospf6_prefix_delete (rem);
}
}
void
ospf6_prefix_in6_addr (struct ospf6_prefix *o6p, struct in6_addr *in6)
{
memset (in6, 0, sizeof (struct in6_addr));
memcpy (in6, o6p + 1, OSPF6_PREFIX_SPACE (o6p->prefix_length));
return;
}
char *
ospf6_prefix_options_str (u_int8_t opt, char *buf, size_t bufsize)
{
char *p, *mc, *la, *nu;
p = (CHECK_FLAG (opt, OSPF6_PREFIX_OPTION_P) ? "P" : "-");
mc = (CHECK_FLAG (opt, OSPF6_PREFIX_OPTION_MC) ? "MC" : "--");
la = (CHECK_FLAG (opt, OSPF6_PREFIX_OPTION_LA) ? "LA" : "--");
nu = (CHECK_FLAG (opt, OSPF6_PREFIX_OPTION_NU) ? "NU" : "--");
snprintf (buf, bufsize, "%s|%s|%s|%s", p, mc, la, nu);
return buf;
}
char *
ospf6_prefix_string (struct ospf6_prefix *prefix, char *buf, size_t size)
{
struct in6_addr in6;
char s[64];
memset (&in6, 0, sizeof (in6));
memcpy (&in6, prefix + 1, OSPF6_PREFIX_SPACE (prefix->prefix_length));
inet_ntop (AF_INET6, &in6, s, sizeof (s));
snprintf (buf, size, "%s/%d", s, prefix->prefix_length);
return buf;
}
void
ospf6_prefix_copy (struct ospf6_prefix *dst, struct ospf6_prefix *src,
size_t dstsize)
{
size_t srcsize;
memset (dst, 0, dstsize);
srcsize = OSPF6_PREFIX_SIZE (src);
if (dstsize < srcsize)
memcpy (dst, src, dstsize);
else
memcpy (dst, src, srcsize);
return;
}
void
ospf6_prefix_apply_mask (struct ospf6_prefix *o6p)
{
u_char *pnt, mask;
int index, offset;
char buf[128];
struct in6_addr in6;
ospf6_prefix_in6_addr (o6p, &in6);
inet_ntop (AF_INET6, &in6, buf, sizeof (buf));
pnt = (u_char *)(o6p + 1);
index = o6p->prefix_length / 8;
offset = o6p->prefix_length % 8;
mask = 0xff << (8 - offset);
if (index >= 16)
return;
pnt[index] &= mask;
index ++;
while (index < OSPF6_PREFIX_SPACE (o6p->prefix_length))
pnt[index++] = 0;
ospf6_prefix_in6_addr (o6p, &in6);
inet_ntop (AF_INET6, &in6, buf, sizeof (buf));
}
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