/* $NetBSD: atalk.c,v 1.16.18.1 2019/08/19 15:56:49 martin Exp $ */
/*
* Copyright (c) 1983, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from @(#)atalk.c 1.1 (Whistle) 6/6/96";
#else
__RCSID("$NetBSD: atalk.c,v 1.16.18.1 2019/08/19 15:56:49 martin Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/sysctl.h>
#include <net/route.h>
#include <net/if.h>
#include <netinet/tcp_fsm.h>
#include <netatalk/at.h>
#include <netatalk/ddp_var.h>
#include <err.h>
#include <nlist.h>
#include <kvm.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "netstat.h"
#include "prog_ops.h"
struct ddpcb ddpcb;
struct socket sockb;
static int first = 1;
/*
* Print a summary of connections related to a Network Systems
* protocol. For XXX, also give state of connection.
* Listening processes (aflag) are suppressed unless the
* -a (all) flag is specified.
*/
static const char *
at_pr_net(const struct sockaddr_at *sat, int numeric)
{
static char mybuf[50];
if (!numeric) {
switch (sat->sat_addr.s_net) {
case 0xffff:
return "????";
case ATADDR_ANYNET:
return ("*");
}
}
(void)snprintf(mybuf, sizeof(mybuf), "%hu", ntohs(sat->sat_addr.s_net));
return (mybuf);
}
static const char *
at_pr_host(const struct sockaddr_at *sat, int numeric)
{
static char mybuf[50];
if (!numeric) {
switch (sat->sat_addr.s_node) {
case ATADDR_BCAST:
return "bcast";
case ATADDR_ANYNODE:
return ("*");
}
}
(void)snprintf(mybuf, sizeof(mybuf), "%d",
(unsigned int)sat->sat_addr.s_node);
return (mybuf);
}
static const char *
at_pr_port(const struct sockaddr_at *sat)
{
static char mybuf[50];
switch (sat->sat_port) {
case ATADDR_ANYPORT:
return ("*");
case 0xff:
return "????";
default:
(void)snprintf(mybuf, sizeof(mybuf), "%d",
(unsigned int)sat->sat_port);
return (mybuf);
}
}
static const char *
at_pr_range(const struct sockaddr_at *sat)
{
static char mybuf[50];
if (sat->sat_range.r_netrange.nr_firstnet
!= sat->sat_range.r_netrange.nr_lastnet) {
(void)snprintf(mybuf, sizeof(mybuf), "%d-%d",
ntohs(sat->sat_range.r_netrange.nr_firstnet),
ntohs(sat->sat_range.r_netrange.nr_lastnet));
} else {
(void)snprintf(mybuf, sizeof(mybuf), "%d",
ntohs(sat->sat_range.r_netrange.nr_firstnet));
}
return (mybuf);
}
/* what == 0 for addr only == 3
* 1 for net
* 2 for host
* 4 for port
* 8 for numeric only
*/
const char *
atalk_print(const struct sockaddr *sa, int what)
{
const struct sockaddr_at *sat = (const struct sockaddr_at *) sa;
static char mybuf[50];
int numeric = (what & 0x08);
mybuf[0] = 0;
switch (what & 0x13) {
case 0:
mybuf[0] = 0;
break;
case 1:
(void)snprintf(mybuf, sizeof(mybuf), "%s",
at_pr_net(sat, numeric));
break;
case 2:
(void)snprintf(mybuf, sizeof(mybuf), "%s",
at_pr_host(sat, numeric));
break;
case 3:
(void)snprintf(mybuf, sizeof(mybuf), "%s.%s",
at_pr_net(sat, numeric),
at_pr_host(sat, numeric));
break;
case 0x10:
(void)snprintf(mybuf, sizeof(mybuf), "%s", at_pr_range(sat));
}
if (what & 4) {
(void)snprintf(mybuf + strlen(mybuf),
sizeof(mybuf) - strlen(mybuf), ".%s", at_pr_port(sat));
}
return (mybuf);
}
const char *
atalk_print2(const struct sockaddr *sa, const struct sockaddr *mask, int what)
{
int n, l;
static char buf[100];
const struct sockaddr_at *sat1, *sat2;
struct sockaddr_at thesockaddr;
struct sockaddr *sa2;
sat1 = (const struct sockaddr_at *) sa;
sat2 = (const struct sockaddr_at *) mask;
sa2 = (struct sockaddr *) & thesockaddr;
thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net &
sat2->sat_addr.s_net;
n = snprintf(buf, sizeof(buf), "%s", atalk_print(sa2, 1 | (what & 8)));
if (n >= (int)sizeof(buf))
n = sizeof(buf) - 1;
else if (n == -1)
n = 0; /* What else can be done ? */
if (sat2->sat_addr.s_net != 0xFFFF) {
thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net |
~sat2->sat_addr.s_net;
l = snprintf(buf + n, sizeof(buf) - n,
"-%s", atalk_print(sa2, 1 | (what & 8)));
if (l >= (int)(sizeof(buf) - n))
l = sizeof(buf) - n - 1;
if (l > 0)
n += l;
}
if (what & 2) {
l = snprintf(buf + n, sizeof(buf) - n, ".%s",
atalk_print(sa, what & (~1)));
if (l >= (int)(sizeof(buf) - n))
l = sizeof(buf) - n - 1;
if (l > 0)
n += l;
}
return (buf);
}
void
atalkprotopr(u_long off, const char *name)
{
struct ddpcb *next;
struct ddpcb *initial;
int width = 22;
if (off == 0)
return;
if (kread(off, (char *)&initial, sizeof(struct ddpcb *)) < 0)
return;
for (next = initial; next != NULL;) {
u_long ppcb = (u_long)next;
if (kread((u_long)next, (char *)&ddpcb, sizeof(ddpcb)) < 0)
return;
next = ddpcb.ddp_next;
#if 0
if (!aflag && atalk_nullhost(ddpcb.ddp_lsat)) {
continue;
}
#endif
if (kread((u_long)ddpcb.ddp_socket,
(char *)&sockb, sizeof(sockb)) < 0)
return;
if (first) {
printf("Active ATALK connections");
if (aflag)
printf(" (including servers)");
putchar('\n');
if (Aflag) {
width = 18;
printf("%-8.8s ", "PCB");
}
printf("%-5.5s %-6.6s %-6.6s %*.*s %*.*s %s\n",
"Proto", "Recv-Q", "Send-Q",
-width, width, "Local Address",
-width, width, "Foreign Address", "(state)");
first = 0;
}
if (Aflag)
printf("%8lx ", ppcb);
printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc,
sockb.so_snd.sb_cc);
printf(" %*.*s", -width, width,
atalk_print((struct sockaddr *)&ddpcb.ddp_lsat, 7));
printf(" %*.*s", -width, width,
atalk_print((struct sockaddr *)&ddpcb.ddp_fsat, 7));
putchar('\n');
}
}
#define ANY(x,y,z) \
((sflag==1 || (x)) ? printf("\t%llu %s%s%s\n",(unsigned long long)x,y,plural(x),z) : 0)
/*
* Dump DDP statistics structure.
*/
void
ddp_stats(u_long off, const char *name)
{
uint64_t ddpstat[DDP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(ddpstat);
if (prog_sysctlbyname("net.atalk.ddp.stats", ddpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
ANY(ddpstat[DDP_STAT_SHORT], "packet", " with short headers ");
ANY(ddpstat[DDP_STAT_LONG], "packet", " with long headers ");
ANY(ddpstat[DDP_STAT_NOSUM], "packet", " with no checksum ");
ANY(ddpstat[DDP_STAT_TOOSHORT], "packet", " too short ");
ANY(ddpstat[DDP_STAT_BADSUM], "packet", " with bad checksum ");
ANY(ddpstat[DDP_STAT_TOOSMALL], "packet", " with not enough data ");
ANY(ddpstat[DDP_STAT_FORWARD], "packet", " forwarded ");
ANY(ddpstat[DDP_STAT_ENCAP], "packet", " encapsulated ");
ANY(ddpstat[DDP_STAT_CANTFORWARD], "packet", " rcvd for unreachable dest ");
ANY(ddpstat[DDP_STAT_NOSOCKSPACE], "packet", " dropped due to no socket space ");
}
#undef ANY