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4c0cf00afc
ospf6_prefix_apply_mask would write one byte beyond the 4/8/12 bytes allocated for prefixes of length 32/64/96. based on report and patch by Jon Andersson <jon.andersson@thales.no> Reported-by: Jon Andersson <jon.andersson@thales.no> Signed-off-by: David Lamparter <equinox@diac24.net>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*
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* Copyright (C) 2003 Yasuhiro Ohara
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <zebra.h>
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#include "log.h"
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#include "ospf6_proto.h"
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void
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ospf6_prefix_apply_mask (struct ospf6_prefix *op)
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{
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u_char *pnt, mask;
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int index, offset;
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pnt = (u_char *)((caddr_t) op + sizeof (struct ospf6_prefix));
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index = op->prefix_length / 8;
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offset = op->prefix_length % 8;
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mask = 0xff << (8 - offset);
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if (index > 16)
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{
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zlog_warn ("Prefix length too long: %d", op->prefix_length);
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return;
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}
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/* nonzero mask means no check for this byte because if it contains
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* prefix bits it must be there for us to write */
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if (mask)
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pnt[index++] &= mask;
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while (index < OSPF6_PREFIX_SPACE (op->prefix_length))
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pnt[index++] = 0;
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}
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void
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ospf6_prefix_options_printbuf (u_int8_t prefix_options, char *buf, int size)
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{
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snprintf (buf, size, "xxx");
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}
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void
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ospf6_capability_printbuf (char capability, char *buf, int size)
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{
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char w, v, e, b;
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w = (capability & OSPF6_ROUTER_BIT_W ? 'W' : '-');
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v = (capability & OSPF6_ROUTER_BIT_V ? 'V' : '-');
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e = (capability & OSPF6_ROUTER_BIT_E ? 'E' : '-');
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b = (capability & OSPF6_ROUTER_BIT_B ? 'B' : '-');
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snprintf (buf, size, "----%c%c%c%c", w, v, e, b);
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}
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void
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ospf6_options_printbuf (u_char *options, char *buf, int size)
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{
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const char *dc, *r, *n, *mc, *e, *v6;
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dc = (OSPF6_OPT_ISSET (options, OSPF6_OPT_DC) ? "DC" : "--");
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r = (OSPF6_OPT_ISSET (options, OSPF6_OPT_R) ? "R" : "-" );
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n = (OSPF6_OPT_ISSET (options, OSPF6_OPT_N) ? "N" : "-" );
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mc = (OSPF6_OPT_ISSET (options, OSPF6_OPT_MC) ? "MC" : "--");
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e = (OSPF6_OPT_ISSET (options, OSPF6_OPT_E) ? "E" : "-" );
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v6 = (OSPF6_OPT_ISSET (options, OSPF6_OPT_V6) ? "V6" : "--");
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snprintf (buf, size, "%s|%s|%s|%s|%s|%s", dc, r, n, mc, e, v6);
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}
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