netcmds.c revision 31522
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1980, 1992, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 341590Srgrimes#ifndef lint 3519234Swollman/* 361590Srgrimesstatic char sccsid[] = "@(#)netcmds.c 8.1 (Berkeley) 6/6/93"; 3719234Swollman*/ 3819234Swollmanstatic const char rcsid[] = 3931522Ssteve "$Id: netcmds.c,v 1.6 1997/02/22 19:57:16 peter Exp $"; 401590Srgrimes#endif /* not lint */ 411590Srgrimes 421590Srgrimes/* 431590Srgrimes * Common network command support routines. 441590Srgrimes */ 451590Srgrimes#include <sys/param.h> 4614543Sdg#include <sys/queue.h> 471590Srgrimes#include <sys/socket.h> 481590Srgrimes#include <sys/socketvar.h> 491590Srgrimes#include <sys/protosw.h> 501590Srgrimes 511590Srgrimes#include <net/route.h> 521590Srgrimes#include <netinet/in.h> 531590Srgrimes#include <netinet/in_systm.h> 541590Srgrimes#include <netinet/ip.h> 551590Srgrimes#include <netinet/in_pcb.h> 561590Srgrimes 571590Srgrimes#include <netdb.h> 581590Srgrimes#include <stdlib.h> 591590Srgrimes#include <string.h> 601590Srgrimes#include <ctype.h> 611590Srgrimes#include "systat.h" 621590Srgrimes#include "extern.h" 631590Srgrimes 641590Srgrimes#define streq(a,b) (strcmp(a,b)==0) 651590Srgrimes 661590Srgrimesstatic struct hitem { 671590Srgrimes struct in_addr addr; 681590Srgrimes int onoff; 691590Srgrimes} *hosts; 701590Srgrimes 711590Srgrimesint nports, nhosts, protos; 721590Srgrimes 731590Srgrimesstatic void changeitems __P((char *, int)); 741590Srgrimesstatic int selectproto __P((char *)); 751590Srgrimesstatic void showprotos __P((void)); 761590Srgrimesstatic int selectport __P((long, int)); 771590Srgrimesstatic void showports __P((void)); 781590Srgrimesstatic int selecthost __P((struct in_addr *, int)); 791590Srgrimesstatic void showhosts __P((void)); 801590Srgrimes 811590Srgrimesint 821590Srgrimesnetcmd(cmd, args) 831590Srgrimes char *cmd, *args; 841590Srgrimes{ 851590Srgrimes 8631522Ssteve if (prefix(cmd, "proto")) { 8731522Ssteve if (*args == '\0') { 8831522Ssteve move(CMDLINE, 0); 8931522Ssteve clrtoeol(); 9031522Ssteve addstr("which proto?"); 9131522Ssteve } else if (!selectproto(args)) { 9231522Ssteve error("%s: Unknown protocol.", args); 9331522Ssteve } 941590Srgrimes return (1); 951590Srgrimes } 961590Srgrimes if (prefix(cmd, "ignore") || prefix(cmd, "display")) { 971590Srgrimes changeitems(args, prefix(cmd, "display")); 981590Srgrimes return (1); 991590Srgrimes } 1001590Srgrimes if (prefix(cmd, "reset")) { 1011590Srgrimes selectproto(0); 1021590Srgrimes selecthost(0, 0); 1031590Srgrimes selectport(-1, 0); 1041590Srgrimes return (1); 1051590Srgrimes } 1061590Srgrimes if (prefix(cmd, "show")) { 1071590Srgrimes move(CMDLINE, 0); clrtoeol(); 1081590Srgrimes if (*args == '\0') { 1091590Srgrimes showprotos(); 1101590Srgrimes showhosts(); 1111590Srgrimes showports(); 1121590Srgrimes return (1); 1131590Srgrimes } 1141590Srgrimes if (prefix(args, "protos")) 1151590Srgrimes showprotos(); 1161590Srgrimes else if (prefix(args, "hosts")) 1171590Srgrimes showhosts(); 1181590Srgrimes else if (prefix(args, "ports")) 1191590Srgrimes showports(); 1201590Srgrimes else 1211590Srgrimes addstr("show what?"); 1221590Srgrimes return (1); 1231590Srgrimes } 1241590Srgrimes return (0); 1251590Srgrimes} 1261590Srgrimes 1271590Srgrimes 1281590Srgrimesstatic void 1291590Srgrimeschangeitems(args, onoff) 1301590Srgrimes char *args; 1311590Srgrimes int onoff; 1321590Srgrimes{ 1331590Srgrimes register char *cp; 1341590Srgrimes struct servent *sp; 1351590Srgrimes struct hostent *hp; 1361590Srgrimes struct in_addr in; 1371590Srgrimes char *index(); 1381590Srgrimes 1391590Srgrimes cp = index(args, '\n'); 1401590Srgrimes if (cp) 1411590Srgrimes *cp = '\0'; 1421590Srgrimes for (;;args = cp) { 1431590Srgrimes for (cp = args; *cp && isspace(*cp); cp++) 1441590Srgrimes ; 1451590Srgrimes args = cp; 1461590Srgrimes for (; *cp && !isspace(*cp); cp++) 1471590Srgrimes ; 1481590Srgrimes if (*cp) 1491590Srgrimes *cp++ = '\0'; 1501590Srgrimes if (cp - args == 0) 1511590Srgrimes break; 1521590Srgrimes sp = getservbyname(args, 1531590Srgrimes protos == TCP ? "tcp" : protos == UDP ? "udp" : 0); 1541590Srgrimes if (sp) { 1551590Srgrimes selectport(sp->s_port, onoff); 1561590Srgrimes continue; 1571590Srgrimes } 1581590Srgrimes hp = gethostbyname(args); 1591590Srgrimes if (hp == 0) { 1601590Srgrimes in.s_addr = inet_addr(args); 1611590Srgrimes if (in.s_addr == -1) { 1621590Srgrimes error("%s: unknown host or port", args); 1631590Srgrimes continue; 1641590Srgrimes } 1651590Srgrimes } else 1661590Srgrimes in = *(struct in_addr *)hp->h_addr; 1671590Srgrimes selecthost(&in, onoff); 1681590Srgrimes } 1691590Srgrimes} 1701590Srgrimes 1711590Srgrimesstatic int 1721590Srgrimesselectproto(proto) 1731590Srgrimes char *proto; 1741590Srgrimes{ 1751590Srgrimes 1761590Srgrimes if (proto == 0 || streq(proto, "all")) 17731522Ssteve protos = TCP | UDP; 1781590Srgrimes else if (streq(proto, "tcp")) 17931522Ssteve protos = TCP; 1801590Srgrimes else if (streq(proto, "udp")) 18131522Ssteve protos = UDP; 18231522Ssteve else 18331522Ssteve return (0); 18431522Ssteve 18531522Ssteve return (protos); 1861590Srgrimes} 1871590Srgrimes 1881590Srgrimesstatic void 1891590Srgrimesshowprotos() 1901590Srgrimes{ 1911590Srgrimes 1921590Srgrimes if ((protos&TCP) == 0) 1931590Srgrimes addch('!'); 1941590Srgrimes addstr("tcp "); 1951590Srgrimes if ((protos&UDP) == 0) 1961590Srgrimes addch('!'); 1971590Srgrimes addstr("udp "); 1981590Srgrimes} 1991590Srgrimes 2001590Srgrimesstatic struct pitem { 2011590Srgrimes long port; 2021590Srgrimes int onoff; 2031590Srgrimes} *ports; 2041590Srgrimes 2051590Srgrimesstatic int 2061590Srgrimesselectport(port, onoff) 2071590Srgrimes long port; 2081590Srgrimes int onoff; 2091590Srgrimes{ 2101590Srgrimes register struct pitem *p; 2111590Srgrimes 2121590Srgrimes if (port == -1) { 2131590Srgrimes if (ports == 0) 2141590Srgrimes return (0); 2151590Srgrimes free((char *)ports), ports = 0; 2161590Srgrimes nports = 0; 2171590Srgrimes return (1); 2181590Srgrimes } 2191590Srgrimes for (p = ports; p < ports+nports; p++) 2201590Srgrimes if (p->port == port) { 2211590Srgrimes p->onoff = onoff; 2221590Srgrimes return (0); 2231590Srgrimes } 2241590Srgrimes if (nports == 0) 2251590Srgrimes ports = (struct pitem *)malloc(sizeof (*p)); 2261590Srgrimes else 2271590Srgrimes ports = (struct pitem *)realloc(ports, (nports+1)*sizeof (*p)); 2281590Srgrimes p = &ports[nports++]; 2291590Srgrimes p->port = port; 2301590Srgrimes p->onoff = onoff; 2311590Srgrimes return (1); 2321590Srgrimes} 2331590Srgrimes 2341590Srgrimesint 2351590Srgrimescheckport(inp) 2361590Srgrimes register struct inpcb *inp; 2371590Srgrimes{ 2381590Srgrimes register struct pitem *p; 2391590Srgrimes 2401590Srgrimes if (ports) 2411590Srgrimes for (p = ports; p < ports+nports; p++) 2421590Srgrimes if (p->port == inp->inp_lport || p->port == inp->inp_fport) 2431590Srgrimes return (p->onoff); 2441590Srgrimes return (1); 2451590Srgrimes} 2461590Srgrimes 2471590Srgrimesstatic void 2481590Srgrimesshowports() 2491590Srgrimes{ 2501590Srgrimes register struct pitem *p; 2511590Srgrimes struct servent *sp; 2521590Srgrimes 2531590Srgrimes for (p = ports; p < ports+nports; p++) { 2541590Srgrimes sp = getservbyport(p->port, 2551590Srgrimes protos == TCP|UDP ? 0 : protos == TCP ? "tcp" : "udp"); 2561590Srgrimes if (!p->onoff) 2571590Srgrimes addch('!'); 2581590Srgrimes if (sp) 2591590Srgrimes printw("%s ", sp->s_name); 2601590Srgrimes else 2611590Srgrimes printw("%d ", p->port); 2621590Srgrimes } 2631590Srgrimes} 2641590Srgrimes 2651590Srgrimesstatic int 2661590Srgrimesselecthost(in, onoff) 2671590Srgrimes struct in_addr *in; 2681590Srgrimes int onoff; 2691590Srgrimes{ 2701590Srgrimes register struct hitem *p; 2711590Srgrimes 2721590Srgrimes if (in == 0) { 2731590Srgrimes if (hosts == 0) 2741590Srgrimes return (0); 2751590Srgrimes free((char *)hosts), hosts = 0; 2761590Srgrimes nhosts = 0; 2771590Srgrimes return (1); 2781590Srgrimes } 2791590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 2801590Srgrimes if (p->addr.s_addr == in->s_addr) { 2811590Srgrimes p->onoff = onoff; 2821590Srgrimes return (0); 2831590Srgrimes } 2841590Srgrimes if (nhosts == 0) 2851590Srgrimes hosts = (struct hitem *)malloc(sizeof (*p)); 2861590Srgrimes else 2871590Srgrimes hosts = (struct hitem *)realloc(hosts, (nhosts+1)*sizeof (*p)); 2881590Srgrimes p = &hosts[nhosts++]; 2891590Srgrimes p->addr = *in; 2901590Srgrimes p->onoff = onoff; 2911590Srgrimes return (1); 2921590Srgrimes} 2931590Srgrimes 2941590Srgrimesint 2951590Srgrimescheckhost(inp) 2961590Srgrimes register struct inpcb *inp; 2971590Srgrimes{ 2981590Srgrimes register struct hitem *p; 2991590Srgrimes 3001590Srgrimes if (hosts) 3011590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 3021590Srgrimes if (p->addr.s_addr == inp->inp_laddr.s_addr || 3031590Srgrimes p->addr.s_addr == inp->inp_faddr.s_addr) 3041590Srgrimes return (p->onoff); 3051590Srgrimes return (1); 3061590Srgrimes} 3071590Srgrimes 3081590Srgrimesstatic void 3091590Srgrimesshowhosts() 3101590Srgrimes{ 3111590Srgrimes register struct hitem *p; 3121590Srgrimes struct hostent *hp; 3131590Srgrimes 3141590Srgrimes for (p = hosts; p < hosts+nhosts; p++) { 3151590Srgrimes hp = gethostbyaddr((char *)&p->addr, sizeof (p->addr), AF_INET); 3161590Srgrimes if (!p->onoff) 3171590Srgrimes addch('!'); 3181590Srgrimes printw("%s ", hp ? hp->h_name : (char *)inet_ntoa(p->addr)); 3191590Srgrimes } 3201590Srgrimes} 321