[unix-history] / usr / src / usr.bin / netstat / inet.c

#ifndef lint
static char sccsid[] = "@(#)inet.c	4.11 83/03/12";
#endif

#include <sys/types.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 <netdb.h>

struct	inpcb inpcb;
struct	tcpcb tcpcb;
struct	socket socket;
struct	protosw proto;
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;
{
	struct inpcb cb;
	register struct inpcb *prev, *next;
	int istcp;

	if (off == 0) {
		printf("%s control block: symbol not in namelist\n", name);
		return;
	}
	istcp = strcmp(name, "tcp") == 0;
	klseek(kmem, off, 0);
	read(kmem, &cb, sizeof (struct inpcb));
	inpcb = cb;
	prev = (struct inpcb *)off;
	if (first) {
		printf("Active connections");
		if (aflag)
			printf(" (including servers)");
		putchar('\n');
		if (Aflag)
			printf("%-8.8s ", "PCB");
		printf("%-5.5s %-6.6s %-6.6s  %-18.18s %-18.18s %s\n",
			"Proto", "Recv-Q", "Send-Q",
			"Local Address", "Foreign Address", "(state)");
		first = 0;
	}
	while (inpcb.inp_next != (struct inpcb *)off) {
		char *cp;

		next = inpcb.inp_next;
		klseek(kmem, (off_t)next, 0);
		read(kmem, &inpcb, sizeof (inpcb));
		if (inpcb.inp_prev != prev) {
			printf("???\n");
			break;
		}
		if (!aflag &&
		  inet_lnaof(inpcb.inp_laddr.s_addr) == INADDR_ANY) {
			prev = next;
			continue;
		}
		klseek(kmem, (off_t)inpcb.inp_socket, 0);
		read(kmem, &socket, sizeof (socket));
		if (istcp) {
			klseek(kmem, (off_t)inpcb.inp_ppcb, 0);
			read(kmem, &tcpcb, sizeof (tcpcb));
		}
		if (Aflag)
			printf("%8x ", inpcb.inp_ppcb);
		printf("%-5.5s %6d %6d ", name, socket.so_rcv.sb_cc,
			socket.so_snd.sb_cc);
		inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
		inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
		if (istcp) {
			if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
				printf(" %d", tcpcb.t_state);
			else
				printf(" %s", tcpstates[tcpcb.t_state]);
		}
		putchar('\n');
		prev = next;
	}
}

/*
 * Dump TCP statistics structure.
 */
tcp_stats(off, name)
	off_t off;
	char *name;
{
	struct tcpstat tcpstat;

	if (off == 0) {
		printf("%sstat: symbol not in namelist\n", name);
		return;
	}
	klseek(kmem, off, 0);
	read(kmem, (char *)&tcpstat, sizeof (tcpstat));
	printf("%s:\n\t%d bad header checksums\n", name, tcpstat.tcps_badsum);
	printf("\t%d bad header offset fields\n", tcpstat.tcps_badoff);
	printf("\t%d incomplete headers\n", tcpstat.tcps_hdrops);
#ifdef notdef
	printf("\t%d bad segments\n", tcpstat.tcps_badsegs);
	printf("\t%d unacknowledged packets\n", tcpstat.tcps_unack);
#endif
}

/*
 * Dump UDP statistics structure.
 */
udp_stats(off, name)
	off_t off;
	char *name;
{
	struct udpstat udpstat;

	if (off == 0) {
		printf("%sstat: symbol not in namelist\n", name);
		return;
	}
	klseek(kmem, off, 0);
	read(kmem, (char *)&udpstat, sizeof (udpstat));
	printf("%s:\n\t%d bad header checksums\n", name, udpstat.udps_badsum);
	printf("\t%d incomplete headers\n", udpstat.udps_hdrops);
	printf("\t%d bad data length fields\n", udpstat.udps_badlen);
}

/*
 * Dump IP statistics structure.
 */
ip_stats(off, name)
	off_t off;
	char *name;
{
	struct ipstat ipstat;

	if (off == 0) {
		printf("%sstat: symbol not in namelist\n", name);
		return;
	}
	klseek(kmem, off, 0);
	read(kmem, (char *)&ipstat, sizeof (ipstat));
	printf("%s:\n\t%d bad header checksums\n", name, ipstat.ips_badsum);
	printf("\t%d packet size smaller than minimum\n",
		ipstat.ips_tooshort);
	printf("\t%d data size < data length\n", ipstat.ips_toosmall);
	printf("\t%d header length < data size\n", ipstat.ips_badhlen);
	printf("\t%d data length < header length\n", ipstat.ips_badlen);
}

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"
};

/*
 * Dump ICMP statistics.
 */
icmp_stats(off, name)
	off_t off;
	char *name;
{
	struct icmpstat icmpstat;
	register int i, first;

	if (off == 0) {
		printf("%sstat: symbol not in namelist\n", name);
		return;
	}
	klseek(kmem, off, 0);
	read(kmem, (char *)&icmpstat, sizeof (icmpstat));
	printf("%s:\n\t%d calls to icmp_error\n", name, icmpstat.icps_error);
	printf("\t%d errors not generated 'cuz old message too short\n",
		icmpstat.icps_oldshort);
	printf("\t%d errors not generated 'cuz old message was icmp\n",
		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 messages < minimum length\n", icmpstat.icps_tooshort);
	printf("\t%d bad checksums\n", icmpstat.icps_checksum);
	printf("\t%d messages with bad length\n", icmpstat.icps_badlen);
	printf("\t%d message responses generated\n", icmpstat.icps_reflect);
	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]);
		}
}

/*
 * 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();

	sprintf(line, "%.10s.", 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));
	printf(" %-18.18s", 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;
{
	char *cp = 0;
	static char line[50];

	if (!nflag) {
		if (inet_lnaof(in) == INADDR_ANY) {
			struct netent *np;

			np = getnetbyaddr(inet_netof(in), AF_INET);
			if (np)
				cp = np->n_name;
		} else {
			struct hostent *hp;

			hp = gethostbyaddr(&in, sizeof (struct in_addr),
				AF_INET);
			if (hp)
				cp = hp->h_name;
		}
	}
	if (in.s_addr == INADDR_ANY)
		strcpy(line, "*");
	else if (cp)
		strcpy(line, cp);
	else {
		u_char *ucp = (u_char *)&in;
		sprintf(line, "%u.%u.%u.%u", ucp[0], ucp[1], ucp[2], ucp[3]);
	}
	return (line);
}
Commit	Line	Data
c7fc5288	1	#ifndef lint
68634afa	2	static char sccsid[] = "@(#)inet.c 4.11 83/03/12";
c7fc5288 SL	3	#endif
	4
	5	#include <sys/types.h>
	6	#include <sys/socket.h>
	7	#include <sys/socketvar.h>
	8	#include <sys/mbuf.h>
	9	#include <sys/protosw.h>
44906619	10
c7fc5288	11	#include <net/route.h>
44906619 SL	12	#include <netinet/in.h>
	13	#include <netinet/in_systm.h>
	14	#include <netinet/in_pcb.h>
	15	#include <netinet/ip.h>
	16	#include <netinet/ip_icmp.h>
7333c75b	17	#include <netinet/icmp_var.h>
44906619 SL	18	#include <netinet/ip_var.h>
	19	#include <netinet/tcp.h>
	20	#include <netinet/tcpip.h>
	21	#include <netinet/tcp_seq.h>
c7fc5288	22	#define TCPSTATES
44906619 SL	23	#include <netinet/tcp_fsm.h>
	24	#include <netinet/tcp_timer.h>
	25	#include <netinet/tcp_var.h>
	26	#include <netinet/tcp_debug.h>
	27	#include <netinet/udp.h>
	28	#include <netinet/udp_var.h>
	29
c7fc5288 SL	30	#include <netdb.h>
	31
	32	struct inpcb inpcb;
	33	struct tcpcb tcpcb;
	34	struct socket socket;
	35	struct protosw proto;
	36	extern int kmem;
	37	extern int Aflag;
	38	extern int aflag;
	39	extern int nflag;
	40
	41	static int first = 1;
	42	char *inetname();
	43
	44	/*
	45	* Print a summary of connections related to an Internet
	46	* protocol. For TCP, also give state of connection.
	47	* Listening processes (aflag) are suppressed unless the
	48	* -a (all) flag is specified.
	49	*/
	50	protopr(off, name)
	51	off_t off;
	52	char *name;
	53	{
	54	struct inpcb cb;
	55	register struct inpcb prev, next;
	56	int istcp;
	57
	58	if (off == 0) {
	59	printf("%s control block: symbol not in namelist\n", name);
	60	return;
	61	}
	62	istcp = strcmp(name, "tcp") == 0;
	63	klseek(kmem, off, 0);
	64	read(kmem, &cb, sizeof (struct inpcb));
	65	inpcb = cb;
	66	prev = (struct inpcb *)off;
	67	if (first) {
	68	printf("Active connections");
	69	if (aflag)
	70	printf(" (including servers)");
	71	putchar('\n');
	72	if (Aflag)
	73	printf("%-8.8s ", "PCB");
	74	printf("%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n",
	75	"Proto", "Recv-Q", "Send-Q",
	76	"Local Address", "Foreign Address", "(state)");
	77	first = 0;
	78	}
	79	while (inpcb.inp_next != (struct inpcb *)off) {
	80	char *cp;
	81
	82	next = inpcb.inp_next;
	83	klseek(kmem, (off_t)next, 0);
	84	read(kmem, &inpcb, sizeof (inpcb));
	85	if (inpcb.inp_prev != prev) {
	86	printf("???\n");
	87	break;
	88	}
	89	if (!aflag &&
444a708d	90	inet_lnaof(inpcb.inp_laddr.s_addr) == INADDR_ANY) {
c7fc5288 SL	91	prev = next;
	92	continue;
	93	}
	94	klseek(kmem, (off_t)inpcb.inp_socket, 0);
	95	read(kmem, &socket, sizeof (socket));
	96	if (istcp) {
	97	klseek(kmem, (off_t)inpcb.inp_ppcb, 0);
	98	read(kmem, &tcpcb, sizeof (tcpcb));
	99	}
	100	if (Aflag)
	101	printf("%8x ", inpcb.inp_ppcb);
	102	printf("%-5.5s %6d %6d ", name, socket.so_rcv.sb_cc,
	103	socket.so_snd.sb_cc);
	104	inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
	105	inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
	106	if (istcp) {
	107	if (tcpcb.t_state < 0 \|\| tcpcb.t_state >= TCP_NSTATES)
	108	printf(" %d", tcpcb.t_state);
	109	else
	110	printf(" %s", tcpstates[tcpcb.t_state]);
	111	}
	112	putchar('\n');
	113	prev = next;
	114	}
	115	}
	116
6df0a927 SL	117	/*
	118	* Dump TCP statistics structure.
	119	*/
	120	tcp_stats(off, name)
	121	off_t off;
	122	char *name;
	123	{
	124	struct tcpstat tcpstat;
	125
	126	if (off == 0) {
	127	printf("%sstat: symbol not in namelist\n", name);
	128	return;
	129	}
	130	klseek(kmem, off, 0);
	131	read(kmem, (char *)&tcpstat, sizeof (tcpstat));
	132	printf("%s:\n\t%d bad header checksums\n", name, tcpstat.tcps_badsum);
	133	printf("\t%d bad header offset fields\n", tcpstat.tcps_badoff);
	134	printf("\t%d incomplete headers\n", tcpstat.tcps_hdrops);
	135	#ifdef notdef
	136	printf("\t%d bad segments\n", tcpstat.tcps_badsegs);
	137	printf("\t%d unacknowledged packets\n", tcpstat.tcps_unack);
	138	#endif
	139	}
	140
	141	/*
	142	* Dump UDP statistics structure.
	143	*/
	144	udp_stats(off, name)
	145	off_t off;
	146	char *name;
	147	{
	148	struct udpstat udpstat;
	149
	150	if (off == 0) {
	151	printf("%sstat: symbol not in namelist\n", name);
	152	return;
	153	}
	154	klseek(kmem, off, 0);
	155	read(kmem, (char *)&udpstat, sizeof (udpstat));
	156	printf("%s:\n\t%d bad header checksums\n", name, udpstat.udps_badsum);
	157	printf("\t%d incomplete headers\n", udpstat.udps_hdrops);
	158	printf("\t%d bad data length fields\n", udpstat.udps_badlen);
	159	}
	160
	161	/*
	162	* Dump IP statistics structure.
	163	*/
	164	ip_stats(off, name)
	165	off_t off;
	166	char *name;
	167	{
	168	struct ipstat ipstat;
	169
	170	if (off == 0) {
	171	printf("%sstat: symbol not in namelist\n", name);
	172	return;
	173	}
	174	klseek(kmem, off, 0);
	175	read(kmem, (char *)&ipstat, sizeof (ipstat));
	176	printf("%s:\n\t%d bad header checksums\n", name, ipstat.ips_badsum);
f48ec3b3 SL	177	printf("\t%d packet size smaller than minimum\n",
	178	ipstat.ips_tooshort);
	179	printf("\t%d data size < data length\n", ipstat.ips_toosmall);
	180	printf("\t%d header length < data size\n", ipstat.ips_badhlen);
	181	printf("\t%d data length < header length\n", ipstat.ips_badlen);
6df0a927 SL	182	}
6df0a927 SL	183
7333c75b SL	184	static char *icmpnames[] = {
	185	"echo reply",
	186	"#1",
	187	"#2",
	188	"destination unreachable",
	189	"source quench",
	190	"routing redirect",
	191	"#6",
	192	"#7",
	193	"echo",
	194	"#9",
	195	"#10",
	196	"time exceeded",
	197	"parameter problem",
	198	"time stamp",
	199	"time stamp reply",
	200	"information request",
	201	"information request reply"
	202	};
	203
	204	/*
	205	* Dump ICMP statistics.
	206	*/
	207	icmp_stats(off, name)
	208	off_t off;
	209	char *name;
	210	{
	211	struct icmpstat icmpstat;
	212	register int i, first;
	213
	214	if (off == 0) {
	215	printf("%sstat: symbol not in namelist\n", name);
	216	return;
	217	}
	218	klseek(kmem, off, 0);
	219	read(kmem, (char *)&icmpstat, sizeof (icmpstat));
	220	printf("%s:\n\t%d calls to icmp_error\n", name, icmpstat.icps_error);
	221	printf("\t%d errors not generated 'cuz old message too short\n",
	222	icmpstat.icps_oldshort);
	223	printf("\t%d errors not generated 'cuz old message was icmp\n",
	224	icmpstat.icps_oldicmp);
94ff35a7	225	for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
7333c75b SL	226	if (icmpstat.icps_outhist[i] != 0) {
	227	if (first) {
	228	printf("\tOutput histogram:\n");
	229	first = 0;
	230	}
	231	printf("\t\t%s: %d\n", icmpnames[i],
	232	icmpstat.icps_outhist[i]);
	233	}
	234	printf("\t%d messages < minimum length\n", icmpstat.icps_tooshort);
	235	printf("\t%d bad checksums\n", icmpstat.icps_checksum);
	236	printf("\t%d messages with bad length\n", icmpstat.icps_badlen);
68634afa	237	printf("\t%d message responses generated\n", icmpstat.icps_reflect);
94ff35a7	238	for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
7333c75b SL	239	if (icmpstat.icps_inhist[i] != 0) {
	240	if (first) {
	241	printf("\tInput histogram:\n");
	242	first = 0;
	243	}
	244	printf("\t\t%s: %d\n", icmpnames[i],
	245	icmpstat.icps_inhist[i]);
	246	}
	247	}
	248
c7fc5288 SL	249	/*
	250	* Pretty print an Internet address (net address + port).
	251	* If the nflag was specified, use numbers instead of names.
	252	*/
	253	inetprint(in, port, proto)
	254	register struct in_addr *in;
	255	int port;
	256	char *proto;
	257	{
	258	struct servent *sp = 0;
	259	char line[80], cp, index();
	260
	261	sprintf(line, "%.10s.", inetname(*in));
	262	cp = index(line, '\0');
c7fc5288	263	if (!nflag && port)
9bce7b73	264	sp = getservbyport(port, proto);
c7fc5288 SL	265	if (sp \|\| port == 0)
	266	sprintf(cp, "%.8s", sp ? sp->s_name : "*");
	267	else
1f34f70d	268	sprintf(cp, "%d", ntohs((u_short)port));
c7fc5288 SL	269	printf(" %-18.18s", line);
	270	}
	271
c7fc5288 SL	272	/*
	273	* Construct an Internet address representation.
	274	* If the nflag has been supplied, give
	275	* numeric value, otherwise try for symbolic name.
	276	*/
	277	char *
	278	inetname(in)
	279	struct in_addr in;
	280	{
	281	char *cp = 0;
	282	static char line[50];
	283
	284	if (!nflag) {
444a708d SL	285	if (inet_lnaof(in) == INADDR_ANY) {
444a708d SL	286	struct netent *np;
c7fc5288	287
444a708d	288	np = getnetbyaddr(inet_netof(in), AF_INET);
c7fc5288 SL	289	if (np)
	290	cp = np->n_name;
	291	} else {
9bce7b73	292	struct hostent *hp;
c7fc5288	293
3394f0b5 SL	294	hp = gethostbyaddr(&in, sizeof (struct in_addr),
3394f0b5 SL	295	AF_INET);
c7fc5288 SL	296	if (hp)
	297	cp = hp->h_name;
	298	}
	299	}
	300	if (in.s_addr == INADDR_ANY)
	301	strcpy(line, "*");
	302	else if (cp)
	303	strcpy(line, cp);
	304	else {
	305	u_char ucp = (u_char )&in;
	306	sprintf(line, "%u.%u.%u.%u", ucp[0], ucp[1], ucp[2], ucp[3]);
	307	}
	308	return (line);
	309	}