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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SunOS */
     28 
     29 #include <ctype.h>
     30 #include <fcntl.h>
     31 #include <sys/socket.h>
     32 #include <sys/types.h>
     33 #include <net/if.h>
     34 #include <netinet/in_systm.h>
     35 #include <netinet/in.h>
     36 #include <netinet/ip.h>
     37 #include <inet/led.h>
     38 #include <inet/ip6.h>
     39 #include <arpa/inet.h>
     40 #include <protocols/routed.h>
     41 #include <protocols/ripngd.h>
     42 #include "snoop.h"
     43 
     44 extern char *dlc_header;
     45 static char *show_cmd6();
     46 
     47 static struct in6_addr all_zeroes_addr = { {	0x0, 0x0, 0x0, 0x0,
     48 						0x0, 0x0, 0x0, 0x0,
     49 						0x0, 0x0, 0x0, 0x0,
     50 						0x0, 0x0, 0x0, 0x0 } };
     51 
     52 int
     53 interpret_rip6(int flags, struct rip6 *rip6, int fraglen)
     54 {
     55 	char *p;
     56 	struct netinfo6 *n;
     57 	int len, count;
     58 	struct in6_addr *dst;
     59 	int notdefault = 0;
     60 	char dststr[INET6_ADDRSTRLEN];
     61 
     62 	if (flags & F_SUM) {
     63 		switch (rip6->rip6_cmd) {
     64 		case RIPCMD6_REQUEST:	p = "C";		break;
     65 		case RIPCMD6_RESPONSE:	p = "R";		break;
     66 		default: p = "?"; break;
     67 		}
     68 
     69 		switch (rip6->rip6_cmd) {
     70 		case RIPCMD6_REQUEST:
     71 		case RIPCMD6_RESPONSE:
     72 			len = fraglen - 4;
     73 			count = 0;
     74 			for (n = rip6->rip6_nets;
     75 			    len >= sizeof (struct netinfo6); n++) {
     76 				count++;
     77 				len -= sizeof (struct netinfo6);
     78 			}
     79 			(void) sprintf(get_sum_line(),
     80 			    "RIPng %s (%d destinations)", p, count);
     81 			break;
     82 		default:
     83 			(void) sprintf(get_sum_line(), "RIPng %s", p);
     84 			break;
     85 		}
     86 	}
     87 
     88 	if (flags & F_DTAIL) {
     89 
     90 		show_header("RIPng:  ", "Routing Information Protocol for IPv6",
     91 		    fraglen);
     92 		show_space();
     93 		(void) sprintf(get_line((char *)(uintptr_t)rip6->rip6_cmd -
     94 		    dlc_header, 1), "Opcode = %d (%s)", rip6->rip6_cmd,
     95 		    show_cmd6(rip6->rip6_cmd));
     96 		(void) sprintf(get_line((char *)(uintptr_t)rip6->rip6_vers -
     97 		    dlc_header, 1), "Version = %d", rip6->rip6_vers);
     98 
     99 		switch (rip6->rip6_cmd) {
    100 		case RIPCMD6_REQUEST:
    101 		case RIPCMD6_RESPONSE:
    102 			show_space();
    103 			(void) sprintf(get_line(0, 0), "Address"
    104 			    "                       Prefix        Metric");
    105 			len = fraglen - 4;
    106 			for (n = rip6->rip6_nets;
    107 			    len >= sizeof (struct netinfo6); n++) {
    108 				if (rip6->rip6_vers > 0) {
    109 					n->rip6_metric = n->rip6_metric;
    110 				}
    111 				dst = &n->rip6_prefix;
    112 				notdefault = bcmp((caddr_t *)dst,
    113 				    (caddr_t *)&all_zeroes_addr, sizeof (*dst));
    114 				(void) inet_ntop(AF_INET6, (char *)dst, dststr,
    115 				    INET6_ADDRSTRLEN);
    116 				(void) sprintf(get_line((char *)n - dlc_header,
    117 				    sizeof (struct netinfo6)),
    118 				    "%-30s %-10d     %-5d %s",
    119 				    notdefault ? dststr :
    120 				    " (default)", n->rip6_prefix_length,
    121 				    n->rip6_metric, n->rip6_metric == 16 ?
    122 				    " (not reachable)":"");
    123 				len -= sizeof (struct netinfo);
    124 			}
    125 			break;
    126 		}
    127 	}
    128 	return (fraglen);
    129 }
    130 
    131 static char *
    132 show_cmd6(c)
    133 	int c;
    134 {
    135 	switch (c) {
    136 	case RIPCMD6_REQUEST:	return ("route request");
    137 	case RIPCMD6_RESPONSE:	return ("route response");
    138 	}
    139 	return ("?");
    140 }
    141