315 lines
8.3 KiB
C
315 lines
8.3 KiB
C
/* $NetBSD: atalk.c,v 1.19 2020/08/28 07:23:48 ozaki-r Exp $ */
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/*
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "from @(#)atalk.c 1.1 (Whistle) 6/6/96";
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#else
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__RCSID("$NetBSD: atalk.c,v 1.19 2020/08/28 07:23:48 ozaki-r Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/sysctl.h>
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#include <net/route.h>
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#include <net/if.h>
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#include <netinet/tcp_fsm.h>
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#include <netatalk/at.h>
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#include <netatalk/ddp_var.h>
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#include <err.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "netstat.h"
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#include "prog_ops.h"
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static int first = 1;
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/*
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* Print a summary of connections related to a Network Systems
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* protocol. For XXX, also give state of connection.
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* Listening processes (aflag) are suppressed unless the
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* -a (all) flag is specified.
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*/
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static const char *
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at_pr_net(const struct sockaddr_at *sat, int numeric)
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{
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static char mybuf[50];
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if (!numeric) {
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switch (sat->sat_addr.s_net) {
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case 0xffff:
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return "????";
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case ATADDR_ANYNET:
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return ("*");
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}
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}
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(void)snprintf(mybuf, sizeof(mybuf), "%hu", ntohs(sat->sat_addr.s_net));
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return (mybuf);
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}
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static const char *
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at_pr_host(const struct sockaddr_at *sat, int numeric)
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{
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static char mybuf[50];
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if (!numeric) {
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switch (sat->sat_addr.s_node) {
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case ATADDR_BCAST:
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return "bcast";
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case ATADDR_ANYNODE:
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return ("*");
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}
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}
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(void)snprintf(mybuf, sizeof(mybuf), "%d",
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(unsigned int)sat->sat_addr.s_node);
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return (mybuf);
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}
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static const char *
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at_pr_port(const struct sockaddr_at *sat)
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{
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static char mybuf[50];
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switch (sat->sat_port) {
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case ATADDR_ANYPORT:
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return ("*");
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case 0xff:
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return "????";
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default:
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(void)snprintf(mybuf, sizeof(mybuf), "%d",
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(unsigned int)sat->sat_port);
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return (mybuf);
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}
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}
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static const char *
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at_pr_range(const struct sockaddr_at *sat)
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{
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static char mybuf[50];
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if (sat->sat_range.r_netrange.nr_firstnet
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!= sat->sat_range.r_netrange.nr_lastnet) {
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(void)snprintf(mybuf, sizeof(mybuf), "%d-%d",
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ntohs(sat->sat_range.r_netrange.nr_firstnet),
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ntohs(sat->sat_range.r_netrange.nr_lastnet));
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} else {
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(void)snprintf(mybuf, sizeof(mybuf), "%d",
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ntohs(sat->sat_range.r_netrange.nr_firstnet));
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}
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return (mybuf);
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}
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/* what == 0 for addr only == 3
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* 1 for net
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* 2 for host
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* 4 for port
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* 8 for numeric only
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*/
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const char *
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atalk_print(const struct sockaddr *sa, int what)
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{
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const struct sockaddr_at *sat = (const struct sockaddr_at *) sa;
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static char mybuf[50];
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int numeric = (what & 0x08);
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mybuf[0] = 0;
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switch (what & 0x13) {
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case 0:
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mybuf[0] = 0;
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break;
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case 1:
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(void)snprintf(mybuf, sizeof(mybuf), "%s",
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at_pr_net(sat, numeric));
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break;
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case 2:
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(void)snprintf(mybuf, sizeof(mybuf), "%s",
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at_pr_host(sat, numeric));
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break;
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case 3:
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(void)snprintf(mybuf, sizeof(mybuf), "%s.%s",
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at_pr_net(sat, numeric),
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at_pr_host(sat, numeric));
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break;
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case 0x10:
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(void)snprintf(mybuf, sizeof(mybuf), "%s", at_pr_range(sat));
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}
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if (what & 4) {
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(void)snprintf(mybuf + strlen(mybuf),
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sizeof(mybuf) - strlen(mybuf), ".%s", at_pr_port(sat));
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}
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return (mybuf);
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}
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const char *
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atalk_print2(const struct sockaddr *sa, const struct sockaddr *mask, int what)
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{
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int n, l;
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static char buf[100];
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const struct sockaddr_at *sat1, *sat2;
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struct sockaddr_at thesockaddr;
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struct sockaddr *sa2;
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sat1 = (const struct sockaddr_at *) sa;
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sat2 = (const struct sockaddr_at *) mask;
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sa2 = (struct sockaddr *) & thesockaddr;
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thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net &
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sat2->sat_addr.s_net;
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n = snprintf(buf, sizeof(buf), "%s", atalk_print(sa2, 1 | (what & 8)));
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if (n >= (int)sizeof(buf))
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n = sizeof(buf) - 1;
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else if (n == -1)
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n = 0; /* What else can be done ? */
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if (sat2->sat_addr.s_net != 0xFFFF) {
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thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net |
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~sat2->sat_addr.s_net;
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l = snprintf(buf + n, sizeof(buf) - n,
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"-%s", atalk_print(sa2, 1 | (what & 8)));
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if (l >= (int)(sizeof(buf) - n))
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l = sizeof(buf) - n - 1;
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if (l > 0)
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n += l;
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}
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if (what & 2) {
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l = snprintf(buf + n, sizeof(buf) - n, ".%s",
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atalk_print(sa, what & (~1)));
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if (l >= (int)(sizeof(buf) - n))
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l = sizeof(buf) - n - 1;
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if (l > 0)
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n += l;
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}
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return (buf);
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}
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void
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atalkprotopr(u_long off, const char *name)
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{
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struct ddpcb ddpcb;
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struct socket sockb;
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struct ddpcb *next;
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struct ddpcb *initial;
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int width = 22;
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if (off == 0)
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return;
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if (kread(off, (char *)&initial, sizeof(struct ddpcb *)) < 0)
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return;
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for (next = initial; next != NULL;) {
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u_long ppcb = (u_long)next;
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if (kread((u_long)next, (char *)&ddpcb, sizeof(ddpcb)) < 0)
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return;
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next = ddpcb.ddp_next;
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#if 0
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if (!aflag && atalk_nullhost(ddpcb.ddp_lsat)) {
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continue;
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}
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#endif
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if (kread((u_long)ddpcb.ddp_socket,
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(char *)&sockb, sizeof(sockb)) < 0)
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return;
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if (first) {
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printf("Active ATALK connections");
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if (aflag)
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printf(" (including servers)");
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putchar('\n');
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if (Aflag) {
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width = 18;
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printf("%-8.8s ", "PCB");
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}
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printf("%-5.5s %-6.6s %-6.6s %*.*s %*.*s %s\n",
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"Proto", "Recv-Q", "Send-Q",
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-width, width, "Local Address",
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-width, width, "Foreign Address", "(state)");
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first = 0;
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}
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if (Aflag)
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printf("%8lx ", ppcb);
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printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc,
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sockb.so_snd.sb_cc);
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printf(" %*.*s", -width, width,
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atalk_print((struct sockaddr *)&ddpcb.ddp_lsat, 7));
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printf(" %*.*s", -width, width,
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atalk_print((struct sockaddr *)&ddpcb.ddp_fsat, 7));
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putchar('\n');
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}
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}
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#define ANY(x,y,z) \
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((sflag==1 || (x)) ? printf("\t%llu %s%s%s\n",(unsigned long long)x,y,plural(x),z) : 0)
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/*
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* Dump DDP statistics structure.
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*/
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void
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ddp_stats(u_long off, const char *name)
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{
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uint64_t ddpstat[DDP_NSTATS];
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if (use_sysctl) {
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size_t size = sizeof(ddpstat);
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if (prog_sysctlbyname("net.atalk.ddp.stats", ddpstat, &size,
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NULL, 0) == -1 && errno != ENOMEM)
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return;
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} else {
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warnx("%s stats not available via KVM.", name);
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return;
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}
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printf("%s:\n", name);
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ANY(ddpstat[DDP_STAT_SHORT], "packet", " with short headers ");
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ANY(ddpstat[DDP_STAT_LONG], "packet", " with long headers ");
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ANY(ddpstat[DDP_STAT_NOSUM], "packet", " with no checksum ");
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ANY(ddpstat[DDP_STAT_TOOSHORT], "packet", " too short ");
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ANY(ddpstat[DDP_STAT_BADSUM], "packet", " with bad checksum ");
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ANY(ddpstat[DDP_STAT_TOOSMALL], "packet", " with not enough data ");
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ANY(ddpstat[DDP_STAT_FORWARD], "packet", " forwarded ");
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ANY(ddpstat[DDP_STAT_ENCAP], "packet", " encapsulated ");
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ANY(ddpstat[DDP_STAT_CANTFORWARD], "packet", " rcvd for unreachable dest ");
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ANY(ddpstat[DDP_STAT_NOSOCKSPACE], "packet", " dropped due to no socket space ");
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}
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#undef ANY
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