GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/tcpdump/print-ip6opts.c Lines: 0 53 0.0 %
Date: 2017-11-13 Branches: 0 39 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: print-ip6opts.c,v 1.5 2015/11/16 00:16:39 mmcc Exp $	*/
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/*
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 * Copyright (C) 1998 WIDE Project.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#ifdef INET6
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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#include <stdio.h>
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#include "interface.h"
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#include "addrtoname.h"
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void
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ip6_opt_print(const u_char *bp, int len)
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{
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    int i;
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    int optlen;
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    for (i = 0; i < len; i += optlen) {
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	switch (bp[i]) {
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	case IP6OPT_PAD1:
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	    optlen = 1;
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	    break;
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	case IP6OPT_PADN:
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	    if (len - i < IP6OPT_MINLEN) {
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		printf("(padn: trunc)");
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		goto trunc;
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	    }
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	    optlen = bp[i + 1] + 2;
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	    break;
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	case IP6OPT_ROUTER_ALERT:
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	    if (len - i < IP6OPT_RTALERT_LEN) {
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		printf("(rtalert: trunc)");
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		goto trunc;
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	    }
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	    if (bp[i + 1] != IP6OPT_RTALERT_LEN - 2) {
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		printf("(rtalert: invalid len %d)", bp[i + 1]);
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		goto trunc;
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	    }
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	    printf("(rtalert: 0x%04x) ", ntohs(*(u_short *)&bp[i + 2]));
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	    optlen = IP6OPT_RTALERT_LEN;
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	    break;
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	case IP6OPT_JUMBO:
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	    if (len - i < IP6OPT_JUMBO_LEN) {
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		printf("(jumbo: trunc)");
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		goto trunc;
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	    }
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	    if (bp[i + 1] != IP6OPT_JUMBO_LEN - 2) {
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		printf("(jumbo: invalid len %d)", bp[i + 1]);
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		goto trunc;
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	    }
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	    printf("(jumbo: %u) ", (u_int32_t)ntohl(*(u_int *)&bp[i + 2]));
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	    optlen = IP6OPT_JUMBO_LEN;
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	    break;
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	default:
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	    if (len - i < IP6OPT_MINLEN) {
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		printf("(type %d: trunc)", bp[i]);
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		goto trunc;
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	    }
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	    printf("(type 0x%02x: len=%d) ", bp[i], bp[i + 1]);
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	    optlen = bp[i + 1] + 2;
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	    break;
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	}
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    }
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#if 0
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end:
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#endif
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    return;
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trunc:
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    printf("[trunc] ");
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}
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int
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hbhopt_print(const u_char *bp)
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{
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    const struct ip6_hbh *dp = (struct ip6_hbh *)bp;
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    const u_char *ep;
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    int hbhlen = 0;
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    /* 'ep' points to the end of avaible data. */
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    ep = snapend;
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    TCHECK(dp->ip6h_len);
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    hbhlen = (int)((dp->ip6h_len + 1) << 3);
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    TCHECK2(*dp, hbhlen);
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    printf("HBH ");
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    if (vflag)
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	ip6_opt_print((const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp));
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    return(hbhlen);
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  trunc:
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    fputs("[|HBH]", stdout);
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    return(hbhlen);
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}
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int
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dstopt_print(const u_char *bp)
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{
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    const struct ip6_dest *dp = (struct ip6_dest *)bp;
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    const u_char *ep;
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    int dstoptlen = 0;
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    /* 'ep' points to the end of avaible data. */
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    ep = snapend;
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    TCHECK(dp->ip6d_len);
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    dstoptlen = (int)((dp->ip6d_len + 1) << 3);
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    TCHECK2(*dp, dstoptlen);
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    printf("DSTOPT ");
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    if (vflag) {
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	ip6_opt_print((const u_char *)dp + sizeof(*dp),
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	    dstoptlen - sizeof(*dp));
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    }
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    return(dstoptlen);
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  trunc:
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    fputs("[|DSTOPT]", stdout);
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    return(dstoptlen);
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}
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#endif /* INET6 */