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-rw-r--r--usr.bin/systat/netcmds.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/usr.bin/systat/netcmds.c b/usr.bin/systat/netcmds.c
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+/*-
+ * 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
+static char sccsid[] = "@(#)netcmds.c 8.1 (Berkeley) 6/6/93";
+#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 <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 in_addr addr;
+ int onoff;
+} *hosts;
+
+int nports, nhosts, protos;
+
+static void changeitems __P((char *, int));
+static int selectproto __P((char *));
+static void showprotos __P((void));
+static int selectport __P((long, int));
+static void showports __P((void));
+static int selecthost __P((struct in_addr *, int));
+static void showhosts __P((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;
+{
+ register char *cp;
+ struct servent *sp;
+ struct hostent *hp;
+ struct in_addr in;
+ char *index();
+
+ cp = index(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;
+ }
+ hp = gethostbyname(args);
+ if (hp == 0) {
+ in.s_addr = inet_addr(args);
+ if (in.s_addr == -1) {
+ error("%s: unknown host or port", args);
+ continue;
+ }
+ } else
+ in = *(struct in_addr *)hp->h_addr;
+ selecthost(&in, onoff);
+ }
+}
+
+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 (new != protos, 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;
+{
+ register 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)
+ register struct inpcb *inp;
+{
+ register 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()
+{
+ register 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
+selecthost(in, onoff)
+ struct in_addr *in;
+ int onoff;
+{
+ register struct hitem *p;
+
+ if (in == 0) {
+ if (hosts == 0)
+ return (0);
+ free((char *)hosts), hosts = 0;
+ nhosts = 0;
+ return (1);
+ }
+ for (p = hosts; p < hosts+nhosts; p++)
+ if (p->addr.s_addr == in->s_addr) {
+ p->onoff = onoff;
+ return (0);
+ }
+ if (nhosts == 0)
+ hosts = (struct hitem *)malloc(sizeof (*p));
+ else
+ hosts = (struct hitem *)realloc(hosts, (nhosts+1)*sizeof (*p));
+ p = &hosts[nhosts++];
+ p->addr = *in;
+ p->onoff = onoff;
+ return (1);
+}
+
+int
+checkhost(inp)
+ register struct inpcb *inp;
+{
+ register struct hitem *p;
+
+ if (hosts)
+ for (p = hosts; p < hosts+nhosts; p++)
+ if (p->addr.s_addr == inp->inp_laddr.s_addr ||
+ p->addr.s_addr == inp->inp_faddr.s_addr)
+ return (p->onoff);
+ return (1);
+}
+
+static void
+showhosts()
+{
+ register struct hitem *p;
+ struct hostent *hp;
+
+ for (p = hosts; p < hosts+nhosts; p++) {
+ hp = gethostbyaddr((char *)&p->addr, sizeof (p->addr), AF_INET);
+ if (!p->onoff)
+ addch('!');
+ printw("%s ", hp ? hp->h_name : (char *)inet_ntoa(p->addr));
+ }
+}
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