2.11BSD/src/new/crash/inet.c
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#if defined(DO_SCCS) && !defined(lint)
static char sccsid[] = "@(#)inet.c 5.4 (Berkeley) 2/25/86";
#endif
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_pcb.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/icmp_var.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_seq.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_debug.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <arpa/inet.h>
#include <netdb.h>
#include "net.h" /* for CRASH only */
extern int kmem;
extern int Aflag;
extern int aflag;
extern int nflag;
static int first = 1;
char *inetname();
/*
* Print a summary of connections related to an Internet
* protocol. For TCP, also give state of connection.
* Listening processes (aflag) are suppressed unless the
* -a (all) flag is specified.
*/
protopr(off, name)
off_t off;
char *name;
{
register struct inpcb *prev, *next;
struct inpcb inpcb, *inpcbp = &inpcb;
struct socket sockb, *sockp = &sockb;
struct tcpcb tcpcb, *tcpcbp = &tcpcb;
int rcvct, sndct; /* number of mbufs in receive/send queue */
int istcp;
if (off == 0)
return;
istcp = strcmp(name, "tcp") == 0;
klseek(kmem, (off_t)off, 0);
read(kmem, inpcbp, sizeof (struct inpcb));
prev = (struct inpcb *)off;
if (inpcbp->inp_next == (struct inpcb *)off)
return;
while (inpcbp->inp_next != (struct inpcb *)off) {
char *cp;
next = inpcbp->inp_next;
#ifdef CRASH
if (!VALADD(next, struct inpcb)) {
printf("bad inpcb address (");
DUMP((unsigned)next);
puts(")");
break;
}
(putars((unsigned)next, sizeof(struct inpcb),
AS_INPCB))->as_ref++;
inpcbp = XLATE(next, struct inpcb *);
#else
klseek(kmem, (off_t)next, 0);
read(kmem, inpcbp, sizeof (struct inpcb));
#endif CRASH
if (inpcbp->inp_prev != prev) {
printf("???\n");
break;
}
if (!aflag &&
inet_lnaof(inpcbp->inp_laddr.s_addr) == INADDR_ANY) {
prev = next;
continue;
}
#ifdef CRASH
if (!VALADD(inpcbp->inp_socket, struct socket)) {
printf("bad socket address (");
DUMP((unsigned)inpcbp->inp_socket);
puts(")");
break;
}
(putars((unsigned)inpcbp->inp_socket,sizeof(struct socket),
AS_SOCK))->as_ref++;
sockp = XLATE(inpcbp->inp_socket, struct socket *);
#else
klseek(kmem, (off_t)inpcbp->inp_socket, 0);
read(kmem, sockp, sizeof (struct socket));
#endif CRASH
if (istcp) {
#ifdef CRASH
if (!VALADD(inpcbp->inp_ppcb, struct tcpcb)) {
printf("bad tcpcb address (");
DUMP((unsigned)inpcbp->inp_ppcb);
puts(")");
break;
}
(putars((unsigned)inpcbp->inp_ppcb,
sizeof(struct tcpcb), AS_TCPCB))->as_ref++;
tcpcbp = XLATE(inpcbp->inp_ppcb, struct tcpcb *);
#else
klseek(kmem, (off_t)inpcbp->inp_ppcb, 0);
read(kmem, &tcpcb, sizeof (tcpcb));
#endif CRASH
}
if (first) {
printf("Active Internet 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;
}
#ifdef CRASH /* chase the chains of mbufs */
rcvct = chasem(sockp->so_rcv.sb_mb,"recv",sockp->so_rcv.sb_cc);
sndct = chasem(sockp->so_snd.sb_mb,"send",sockp->so_snd.sb_cc);
#endif CRASH
if (Aflag)
if (istcp)
printf("%8x ", inpcbp->inp_ppcb);
else
printf("%8x ", next);
printf("%-5.5s %6d %6d ", name, sockp->so_rcv.sb_cc,
sockp->so_snd.sb_cc);
inetprint(&inpcbp->inp_laddr, inpcbp->inp_lport, name);
inetprint(&inpcbp->inp_faddr, inpcbp->inp_fport, name);
if (istcp) {
if (tcpcbp->t_state < 0 ||
tcpcbp->t_state >= TCP_NSTATES)
printf(" %d", tcpcbp->t_state);
else
printf(" %s", tcpstates[tcpcbp->t_state]);
}
putchar('\n');
#ifdef CRASH
if (istcp) {
if (tcpcbp->t_tcpopt || tcpcbp->t_inpcb != next)
printf("--tcp opts=%4x t_inpcb=%4x (actual inpcb=%4x)\n",
tcpcbp->t_tcpopt, tcpcbp->t_inpcb, next);
}
#endif CRASH
prev = next;
}
}
/*
* Dump TCP statistics structure.
*/
tcp_stats(off, name)
off_t off;
char *name;
{
struct tcpstat tcpstat;
if (off == 0)
return;
klseek(kmem, (off_t)off, 0);
read(kmem, (char *)&tcpstat, sizeof (tcpstat));
printf("%s:\n\t%D incomplete header%s\n", name,
tcpstat.tcps_hdrops, plural(tcpstat.tcps_hdrops));
printf("\t%D bad checksum%s\n",
tcpstat.tcps_badsum, plural(tcpstat.tcps_badsum));
printf("\t%D bad header offset field%s\n",
tcpstat.tcps_badoff, plural(tcpstat.tcps_badoff));
printf("\t%D bad segment%s\n",
tcpstat.tcps_badsegs, plural(tcpstat.tcps_badsegs));
printf("\t%D unacknowledged packet%s\n",
tcpstat.tcps_unack, plural(tcpstat.tcps_unack));
}
/*
* Dump UDP statistics structure.
*/
udp_stats(off, name)
off_t off;
char *name;
{
struct udpstat udpstat;
if (off == 0)
return;
klseek(kmem, (off_t)off, 0);
read(kmem, (char *)&udpstat, sizeof (udpstat));
printf("%s:\n\t%D incomplete header%s\n", name,
udpstat.udps_hdrops, plural(udpstat.udps_hdrops));
printf("\t%D bad data length field%s\n",
udpstat.udps_badlen, plural(udpstat.udps_badlen));
printf("\t%D bad checksum%s\n",
udpstat.udps_badsum, plural(udpstat.udps_badsum));
}
/*
* Dump IP statistics structure.
*/
ip_stats(off, name)
off_t off;
char *name;
{
struct ipstat ipstat;
if (off == 0)
return;
klseek(kmem, (off_t)off, 0);
read(kmem, (char *)&ipstat, sizeof (ipstat));
printf("%s:\n\t%D total packets received\n", name,
ipstat.ips_total);
printf("\t%D bad header checksum%s\n",
ipstat.ips_badsum, plural(ipstat.ips_badsum));
printf("\t%D with size smaller than minimum\n", ipstat.ips_tooshort);
printf("\t%D with data size < data length\n", ipstat.ips_toosmall);
printf("\t%D with header length < data size\n", ipstat.ips_badhlen);
printf("\t%D with data length < header length\n", ipstat.ips_badlen);
printf("\t%D fragment%s received\n",
ipstat.ips_fragments, plural(ipstat.ips_fragments));
printf("\t%D fragment%s dropped (dup or out of space)\n",
ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
printf("\t%D fragment%s dropped after timeout\n",
ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
printf("\t%D packet%s forwarded\n",
ipstat.ips_forward, plural(ipstat.ips_forward));
printf("\t%D packet%s not forwardable\n",
ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
printf("\t%D redirect%s sent\n",
ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
}
static char *icmpnames[] = {
"echo reply",
"#1",
"#2",
"destination unreachable",
"source quench",
"routing redirect",
"#6",
"#7",
"echo",
"#9",
"#10",
"time exceeded",
"parameter problem",
"time stamp",
"time stamp reply",
"information request",
"information request reply",
"address mask request",
"address mask reply",
};
/*
* Dump ICMP statistics.
*/
icmp_stats(off, name)
off_t off;
char *name;
{
struct icmpstat icmpstat;
register int i, first;
if (off == 0)
return;
klseek(kmem, (off_t)off, 0);
read(kmem, (char *)&icmpstat, sizeof (icmpstat));
printf("%s:\n\t%D call%s to icmp_error\n", name,
icmpstat.icps_error, plural(icmpstat.icps_error));
printf("\t%D error%s not generated 'cuz old message was icmp\n",
icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
if (icmpstat.icps_outhist[i] != 0) {
if (first) {
printf("\tOutput histogram:\n");
first = 0;
}
printf("\t\t%s: %D\n", icmpnames[i],
icmpstat.icps_outhist[i]);
}
printf("\t%D message%s with bad code fields\n",
icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
printf("\t%D message%s < minimum length\n",
icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
printf("\t%D bad checksum%s\n",
icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
printf("\t%D message%s with bad length\n",
icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
if (icmpstat.icps_inhist[i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %D\n", icmpnames[i],
icmpstat.icps_inhist[i]);
}
printf("\t%D message response%s generated\n",
icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
}
/*
* Pretty print an Internet address (net address + port).
* If the nflag was specified, use numbers instead of names.
*/
inetprint(in, port, proto)
register struct in_addr *in;
int port;
char *proto;
{
struct servent *sp = 0;
char line[80], *cp, *index();
int width;
sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in));
cp = index(line, '\0');
if (!nflag && port)
sp = getservbyport(port, proto);
if (sp || port == 0)
sprintf(cp, "%.8s", sp ? sp->s_name : "*");
else
sprintf(cp, "%d", ntohs((u_short)port));
width = Aflag ? 18 : 22;
printf(" %-*.*s", width, width, line);
}
/*
* Construct an Internet address representation.
* If the nflag has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
char *
inetname(in)
struct in_addr in;
{
register char *cp;
char *index();
static char line[50];
struct hostent *hp;
struct netent *np;
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
if (first && !nflag) {
first = 0;
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
(cp = index(domain, '.')))
(void) strcpy(domain, cp + 1);
else
domain[0] = 0;
}
cp = 0;
if (!nflag && in.s_addr != INADDR_ANY) {
u_long net = inet_netof(in);
u_long lna = inet_lnaof(in);
if (lna == INADDR_ANY) {
np = getnetbyaddr(net, AF_INET);
if (np)
cp = np->n_name;
}
if (cp == 0) {
hp = gethostbyaddr(&in, sizeof (in), AF_INET);
if (hp) {
if ((cp = index(hp->h_name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = hp->h_name;
}
}
}
if (in.s_addr == INADDR_ANY)
strcpy(line, "*");
else if (cp)
strcpy(line, cp);
else {
in.s_addr = ntohl(in.s_addr);
#define C(x) ((x) & 0xff)
sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
}
return (line);
}