File: [local] / src / usr.bin / systat / Attic / netcmds.c (download)
Revision 1.10, Sat Feb 16 21:27:54 2002 UTC (22 years, 4 months ago) by millert
Branch: MAIN
CVS Tags: OPENBSD_3_1_BASE, OPENBSD_3_1 Changes since 1.9: +10 -10 lines
Part one of userland __P removal. Done with a simple regexp with some minor hand editing to make comments line up correctly. Another pass is forthcoming that handles the cases that could not be done automatically.
|
/* $OpenBSD: netcmds.c,v 1.10 2002/02/16 21:27:54 millert Exp $ */
/* $NetBSD: netcmds.c,v 1.4 1995/05/21 17:14:38 mycroft Exp $ */
/*-
* Copyright (c) 1980, 1992, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)netcmds.c 8.1 (Berkeley) 6/6/93";
#endif
static char rcsid[] = "$OpenBSD: netcmds.c,v 1.10 2002/02/16 21:27:54 millert Exp $";
#endif /* not lint */
/*
* Common network command support routines.
*/
#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/ip.h>
#include <netinet/in_pcb.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "systat.h"
#include "extern.h"
#define streq(a,b) (strcmp(a,b)==0)
static struct hitem {
struct sockaddr_storage addr;
int onoff;
} *hosts;
int nports, nhosts, protos;
static void changeitems(char *, int);
static int selectproto(char *);
static void showprotos(void);
static int selectport(long, int);
static void showports(void);
static int addrcmp(struct sockaddr *, struct sockaddr *);
static int selecthost(struct sockaddr *, int);
static void showhosts(void);
int
netcmd(cmd, args)
char *cmd, *args;
{
if (prefix(cmd, "tcp") || prefix(cmd, "udp")) {
selectproto(cmd);
return (1);
}
if (prefix(cmd, "ignore") || prefix(cmd, "display")) {
changeitems(args, prefix(cmd, "display"));
return (1);
}
if (prefix(cmd, "reset")) {
selectproto(0);
selecthost(0, 0);
selectport(-1, 0);
return (1);
}
if (prefix(cmd, "show")) {
move(CMDLINE, 0); clrtoeol();
if (*args == '\0') {
showprotos();
showhosts();
showports();
return (1);
}
if (prefix(args, "protos"))
showprotos();
else if (prefix(args, "hosts"))
showhosts();
else if (prefix(args, "ports"))
showports();
else
addstr("show what?");
return (1);
}
return (0);
}
static void
changeitems(args, onoff)
char *args;
int onoff;
{
char *cp;
struct servent *sp;
struct addrinfo hints, *res0, *res;
cp = strchr(args, '\n');
if (cp)
*cp = '\0';
for (;;args = cp) {
for (cp = args; *cp && isspace(*cp); cp++)
;
args = cp;
for (; *cp && !isspace(*cp); cp++)
;
if (*cp)
*cp++ = '\0';
if (cp - args == 0)
break;
sp = getservbyname(args,
protos == TCP ? "tcp" : protos == UDP ? "udp" : 0);
if (sp) {
selectport(sp->s_port, onoff);
continue;
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
if (getaddrinfo(args, "0", &hints, &res0) != 0) {
error("%s: unknown host or port", args);
continue;
}
for (res = res0; res; res = res->ai_next)
selecthost(res->ai_addr, onoff);
freeaddrinfo(res0);
}
}
static int
selectproto(proto)
char *proto;
{
int new = protos;
if (proto == 0 || streq(proto, "all"))
new = TCP|UDP;
else if (streq(proto, "tcp"))
new = TCP;
else if (streq(proto, "udp"))
new = UDP;
return (protos = new);
}
static void
showprotos()
{
if ((protos&TCP) == 0)
addch('!');
addstr("tcp ");
if ((protos&UDP) == 0)
addch('!');
addstr("udp ");
}
static struct pitem {
long port;
int onoff;
} *ports;
static int
selectport(port, onoff)
long port;
int onoff;
{
struct pitem *p;
if (port == -1) {
if (ports == 0)
return (0);
free((char *)ports), ports = 0;
nports = 0;
return (1);
}
for (p = ports; p < ports+nports; p++)
if (p->port == port) {
p->onoff = onoff;
return (0);
}
if (nports == 0)
ports = (struct pitem *)malloc(sizeof (*p));
else
ports = (struct pitem *)realloc(ports, (nports+1)*sizeof (*p));
p = &ports[nports++];
p->port = port;
p->onoff = onoff;
return (1);
}
int
checkport(inp)
struct inpcb *inp;
{
struct pitem *p;
if (ports)
for (p = ports; p < ports+nports; p++)
if (p->port == inp->inp_lport || p->port == inp->inp_fport)
return (p->onoff);
return (1);
}
static void
showports()
{
struct pitem *p;
struct servent *sp;
for (p = ports; p < ports+nports; p++) {
sp = getservbyport(p->port,
protos == (TCP|UDP) ? 0 : protos == TCP ? "tcp" : "udp");
if (!p->onoff)
addch('!');
if (sp)
printw("%s ", sp->s_name);
else
printw("%d ", p->port);
}
}
static int
addrcmp(sa1, sa2)
struct sockaddr *sa1;
struct sockaddr *sa2;
{
if (sa1->sa_family != sa2->sa_family)
return 0;
if (sa1->sa_len != sa2->sa_len)
return 0;
switch (sa1->sa_family) {
case AF_INET:
if (((struct sockaddr_in *)sa1)->sin_addr.s_addr ==
((struct sockaddr_in *)sa2)->sin_addr.s_addr)
return 1;
break;
#ifdef INET6
case AF_INET6:
if (IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)sa1)->sin6_addr,
&((struct sockaddr_in6 *)sa2)->sin6_addr))
return 1;
break;
#endif
default:
if (memcmp(sa1, sa2, sa1->sa_len) == 0)
return 1;
break;
}
return 0;
}
static int
selecthost(sa, onoff)
struct sockaddr *sa;
int onoff;
{
struct hitem *p;
if (sa == 0) {
if (hosts == 0)
return (0);
free((char *)hosts), hosts = 0;
nhosts = 0;
return (1);
}
for (p = hosts; p < hosts+nhosts; p++)
if (addrcmp((struct sockaddr *)&p->addr, sa)) {
p->onoff = onoff;
return (0);
}
if (sa->sa_len > sizeof(struct sockaddr_storage))
return (-1); /*XXX*/
if (nhosts == 0)
hosts = (struct hitem *)malloc(sizeof (*p));
else
hosts = (struct hitem *)realloc(hosts, (nhosts+1)*sizeof (*p));
p = &hosts[nhosts++];
memcpy(&p->addr, sa, sa->sa_len);
p->onoff = onoff;
return (1);
}
int
checkhost(inp)
struct inpcb *inp;
{
struct hitem *p;
if (hosts)
for (p = hosts; p < hosts+nhosts; p++) {
if (((struct sockaddr *)&p->addr)->sa_family == AF_INET &&
!(inp->inp_flags & INP_IPV6)) {
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)&p->addr;
if (sin->sin_addr.s_addr == inp->inp_laddr.s_addr ||
sin->sin_addr.s_addr == inp->inp_faddr.s_addr)
return (p->onoff);
}
#ifdef INET6
if (((struct sockaddr *)&p->addr)->sa_family == AF_INET6 &&
(inp->inp_flags & INP_IPV6)) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&p->addr;
if (IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &inp->inp_laddr6) ||
IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &inp->inp_faddr6))
return (p->onoff);
}
#endif
}
return (1);
}
static void
showhosts()
{
struct hitem *p;
char hbuf[NI_MAXHOST];
struct sockaddr *sa;
int flags;
#if 0
flags = nflag ? NI_NUMERICHOST : 0;
#else
flags = 0;
#endif
for (p = hosts; p < hosts+nhosts; p++) {
sa = (struct sockaddr *)&p->addr;
if (getnameinfo(sa, sa->sa_len, hbuf, sizeof(hbuf), NULL, 0,
flags) != 0)
strlcpy(hbuf, "(invalid)", sizeof hbuf);
if (!p->onoff)
addch('!');
printw("%s ", hbuf);
}
}