freebsd-dev/usr.bin/netstat/atalk.c

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/*-
* 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.
* 4. 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.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)atalk.c 1.1 (Whistle) 6/6/96";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <arpa/inet.h>
#include <net/route.h>
#include <netatalk/at.h>
#include <netatalk/ddp_var.h>
#include <errno.h>
#include <nlist.h>
#include <netdb.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "netstat.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(struct sockaddr_at *sat, int numeric)
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{
static char mybuf[50];
if (!numeric) {
switch(sat->sat_addr.s_net) {
case 0xffff:
return "????";
case ATADDR_ANYNET:
return("*");
}
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}
sprintf(mybuf,"%hu",ntohs(sat->sat_addr.s_net));
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return mybuf;
}
static const char *
at_pr_host(struct sockaddr_at *sat, int numeric)
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{
static char mybuf[50];
if (!numeric) {
switch(sat->sat_addr.s_node) {
case ATADDR_BCAST:
return "bcast";
case ATADDR_ANYNODE:
return("*");
}
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}
sprintf(mybuf,"%d",(unsigned int)sat->sat_addr.s_node);
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return mybuf;
}
static const char *
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at_pr_port(struct sockaddr_at *sat)
{
static char mybuf[50];
struct servent *serv;
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switch(sat->sat_port) {
case ATADDR_ANYPORT:
return("*");
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case 0xff:
return "????";
default:
if (numeric_port) {
(void)snprintf(mybuf, sizeof(mybuf), "%d",
(unsigned int)sat->sat_port);
} else {
serv = getservbyport(sat->sat_port, "ddp");
if (serv == NULL)
(void)snprintf(mybuf, sizeof(mybuf), "%d",
(unsigned int) sat->sat_port);
else
(void) snprintf(mybuf, sizeof(mybuf), "%s",
serv->s_name);
}
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}
return mybuf;
}
static char *
at_pr_range(struct sockaddr_at *sat)
{
static char mybuf[50];
if(sat->sat_range.r_netrange.nr_firstnet
!= sat->sat_range.r_netrange.nr_lastnet) {
sprintf(mybuf,"%d-%d",
ntohs(sat->sat_range.r_netrange.nr_firstnet),
ntohs(sat->sat_range.r_netrange.nr_lastnet));
} else {
sprintf(mybuf,"%d",
ntohs(sat->sat_range.r_netrange.nr_firstnet));
}
return mybuf;
}
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/* what == 0 for addr only == 3 */
/* 1 for net */
/* 2 for host */
/* 4 for port */
/* 8 for numeric only */
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char *
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atalk_print(struct sockaddr *sa, int what)
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{
struct sockaddr_at *sat = (struct sockaddr_at *)sa;
static char mybuf[50];
int numeric = (what & 0x08);
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mybuf[0] = 0;
switch (what & 0x13) {
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case 0:
mybuf[0] = 0;
break;
case 1:
sprintf(mybuf,"%s",at_pr_net(sat, numeric));
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break;
case 2:
sprintf(mybuf,"%s",at_pr_host(sat, numeric));
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break;
case 3:
sprintf(mybuf,"%s.%s",
at_pr_net(sat, numeric),
at_pr_host(sat, numeric));
break;
case 0x10:
sprintf(mybuf,"%s", at_pr_range(sat));
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}
if (what & 4) {
sprintf(mybuf+strlen(mybuf),".%s",at_pr_port(sat));
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}
return mybuf;
}
char *
atalk_print2(struct sockaddr *sa, struct sockaddr *mask, int what)
{
int n;
static char buf[100];
struct sockaddr_at *sat1, *sat2;
struct sockaddr_at thesockaddr;
struct sockaddr *sa2;
sat1 = (struct sockaddr_at *)sa;
sat2 = (struct sockaddr_at *)mask;
sa2 = (struct sockaddr *)&thesockaddr;
thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net & sat2->sat_addr.s_net;
snprintf(buf, sizeof(buf), "%s", atalk_print(sa2, 1 |(what & 8)));
if(sat2->sat_addr.s_net != 0xFFFF) {
thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net | ~sat2->sat_addr.s_net;
n = strlen(buf);
snprintf(buf + n, sizeof(buf) - n, "-%s", atalk_print(sa2, 1 |(what & 8)));
}
if(what & 2) {
n = strlen(buf);
snprintf(buf + n, sizeof(buf) - n, ".%s", atalk_print(sa, what & (~1)));
}
return(buf);
}
void
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
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atalkprotopr(u_long off __unused, const char *name, int af1 __unused,
int proto __unused)
{
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struct ddpcb *this, *next;
if (off == 0)
return;
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kread(off, (char *)&this, sizeof (struct ddpcb *));
for ( ; this != NULL; this = next) {
kread((u_long)this, (char *)&ddpcb, sizeof (ddpcb));
next = ddpcb.ddp_next;
#if 0
if (!aflag && atalk_nullhost(ddpcb.ddp_lsat) ) {
continue;
}
#endif
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kread((u_long)ddpcb.ddp_socket, (char *)&sockb, sizeof (sockb));
if (first) {
printf("Active ATALK connections");
if (aflag)
printf(" (including servers)");
putchar('\n');
if (Aflag)
printf("%-8.8s ", "PCB");
printf(Aflag ?
"%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
"%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
"Proto", "Recv-Q", "Send-Q",
"Local Address", "Foreign Address", "(state)");
first = 0;
}
if (Aflag)
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printf("%8lx ", (u_long) this);
printf("%-5.5s %6u %6u ", name, sockb.so_rcv.sb_cc,
sockb.so_snd.sb_cc);
printf(Aflag?" %-18.18s":" %-22.22s", atalk_print(
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(struct sockaddr *)&ddpcb.ddp_lsat,7));
printf(Aflag?" %-18.18s":" %-22.22s", atalk_print(
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(struct sockaddr *)&ddpcb.ddp_fsat,7));
putchar('\n');
}
}
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#define ANY(x,y,z) if (x || sflag <= 1) \
printf("\t%lu %s%s%s\n",x,y,plural(x),z)
/*
* Dump DDP statistics structure.
*/
void
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
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ddp_stats(u_long off __unused, const char *name, int af1 __unused,
int proto __unused)
{
struct ddpstat ddpstat;
if (off == 0)
return;
kread(off, (char *)&ddpstat, sizeof (ddpstat));
printf("%s:\n", name);
ANY(ddpstat.ddps_short, "packet", " with short headers ");
ANY(ddpstat.ddps_long, "packet", " with long headers ");
ANY(ddpstat.ddps_nosum, "packet", " with no checksum ");
ANY(ddpstat.ddps_tooshort, "packet", " too short ");
ANY(ddpstat.ddps_badsum, "packet", " with bad checksum ");
ANY(ddpstat.ddps_toosmall, "packet", " with not enough data ");
ANY(ddpstat.ddps_forward, "packet", " forwarded ");
ANY(ddpstat.ddps_encap, "packet", " encapsulated ");
ANY(ddpstat.ddps_cantforward, "packet", " rcvd for unreachable dest ");
ANY(ddpstat.ddps_nosockspace, "packet", " dropped due to no socket space ");
}