netcmds.c revision 1590
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 351590Srgrimesstatic char sccsid[] = "@(#)netcmds.c 8.1 (Berkeley) 6/6/93"; 361590Srgrimes#endif /* not lint */ 371590Srgrimes 381590Srgrimes/* 391590Srgrimes * Common network command support routines. 401590Srgrimes */ 411590Srgrimes#include <sys/param.h> 421590Srgrimes#include <sys/socket.h> 431590Srgrimes#include <sys/socketvar.h> 441590Srgrimes#include <sys/mbuf.h> 451590Srgrimes#include <sys/protosw.h> 461590Srgrimes 471590Srgrimes#include <net/route.h> 481590Srgrimes#include <netinet/in.h> 491590Srgrimes#include <netinet/in_systm.h> 501590Srgrimes#include <netinet/ip.h> 511590Srgrimes#include <netinet/in_pcb.h> 521590Srgrimes 531590Srgrimes#include <netdb.h> 541590Srgrimes#include <stdlib.h> 551590Srgrimes#include <string.h> 561590Srgrimes#include <ctype.h> 571590Srgrimes#include "systat.h" 581590Srgrimes#include "extern.h" 591590Srgrimes 601590Srgrimes#define streq(a,b) (strcmp(a,b)==0) 611590Srgrimes 621590Srgrimesstatic struct hitem { 631590Srgrimes struct in_addr addr; 641590Srgrimes int onoff; 651590Srgrimes} *hosts; 661590Srgrimes 671590Srgrimesint nports, nhosts, protos; 681590Srgrimes 691590Srgrimesstatic void changeitems __P((char *, int)); 701590Srgrimesstatic int selectproto __P((char *)); 711590Srgrimesstatic void showprotos __P((void)); 721590Srgrimesstatic int selectport __P((long, int)); 731590Srgrimesstatic void showports __P((void)); 741590Srgrimesstatic int selecthost __P((struct in_addr *, int)); 751590Srgrimesstatic void showhosts __P((void)); 761590Srgrimes 771590Srgrimesint 781590Srgrimesnetcmd(cmd, args) 791590Srgrimes char *cmd, *args; 801590Srgrimes{ 811590Srgrimes 821590Srgrimes if (prefix(cmd, "tcp") || prefix(cmd, "udp")) { 831590Srgrimes selectproto(cmd); 841590Srgrimes return (1); 851590Srgrimes } 861590Srgrimes if (prefix(cmd, "ignore") || prefix(cmd, "display")) { 871590Srgrimes changeitems(args, prefix(cmd, "display")); 881590Srgrimes return (1); 891590Srgrimes } 901590Srgrimes if (prefix(cmd, "reset")) { 911590Srgrimes selectproto(0); 921590Srgrimes selecthost(0, 0); 931590Srgrimes selectport(-1, 0); 941590Srgrimes return (1); 951590Srgrimes } 961590Srgrimes if (prefix(cmd, "show")) { 971590Srgrimes move(CMDLINE, 0); clrtoeol(); 981590Srgrimes if (*args == '\0') { 991590Srgrimes showprotos(); 1001590Srgrimes showhosts(); 1011590Srgrimes showports(); 1021590Srgrimes return (1); 1031590Srgrimes } 1041590Srgrimes if (prefix(args, "protos")) 1051590Srgrimes showprotos(); 1061590Srgrimes else if (prefix(args, "hosts")) 1071590Srgrimes showhosts(); 1081590Srgrimes else if (prefix(args, "ports")) 1091590Srgrimes showports(); 1101590Srgrimes else 1111590Srgrimes addstr("show what?"); 1121590Srgrimes return (1); 1131590Srgrimes } 1141590Srgrimes return (0); 1151590Srgrimes} 1161590Srgrimes 1171590Srgrimes 1181590Srgrimesstatic void 1191590Srgrimeschangeitems(args, onoff) 1201590Srgrimes char *args; 1211590Srgrimes int onoff; 1221590Srgrimes{ 1231590Srgrimes register char *cp; 1241590Srgrimes struct servent *sp; 1251590Srgrimes struct hostent *hp; 1261590Srgrimes struct in_addr in; 1271590Srgrimes char *index(); 1281590Srgrimes 1291590Srgrimes cp = index(args, '\n'); 1301590Srgrimes if (cp) 1311590Srgrimes *cp = '\0'; 1321590Srgrimes for (;;args = cp) { 1331590Srgrimes for (cp = args; *cp && isspace(*cp); cp++) 1341590Srgrimes ; 1351590Srgrimes args = cp; 1361590Srgrimes for (; *cp && !isspace(*cp); cp++) 1371590Srgrimes ; 1381590Srgrimes if (*cp) 1391590Srgrimes *cp++ = '\0'; 1401590Srgrimes if (cp - args == 0) 1411590Srgrimes break; 1421590Srgrimes sp = getservbyname(args, 1431590Srgrimes protos == TCP ? "tcp" : protos == UDP ? "udp" : 0); 1441590Srgrimes if (sp) { 1451590Srgrimes selectport(sp->s_port, onoff); 1461590Srgrimes continue; 1471590Srgrimes } 1481590Srgrimes hp = gethostbyname(args); 1491590Srgrimes if (hp == 0) { 1501590Srgrimes in.s_addr = inet_addr(args); 1511590Srgrimes if (in.s_addr == -1) { 1521590Srgrimes error("%s: unknown host or port", args); 1531590Srgrimes continue; 1541590Srgrimes } 1551590Srgrimes } else 1561590Srgrimes in = *(struct in_addr *)hp->h_addr; 1571590Srgrimes selecthost(&in, onoff); 1581590Srgrimes } 1591590Srgrimes} 1601590Srgrimes 1611590Srgrimesstatic int 1621590Srgrimesselectproto(proto) 1631590Srgrimes char *proto; 1641590Srgrimes{ 1651590Srgrimes int new = protos; 1661590Srgrimes 1671590Srgrimes if (proto == 0 || streq(proto, "all")) 1681590Srgrimes new = TCP|UDP; 1691590Srgrimes else if (streq(proto, "tcp")) 1701590Srgrimes new = TCP; 1711590Srgrimes else if (streq(proto, "udp")) 1721590Srgrimes new = UDP; 1731590Srgrimes return (new != protos, protos = new); 1741590Srgrimes} 1751590Srgrimes 1761590Srgrimesstatic void 1771590Srgrimesshowprotos() 1781590Srgrimes{ 1791590Srgrimes 1801590Srgrimes if ((protos&TCP) == 0) 1811590Srgrimes addch('!'); 1821590Srgrimes addstr("tcp "); 1831590Srgrimes if ((protos&UDP) == 0) 1841590Srgrimes addch('!'); 1851590Srgrimes addstr("udp "); 1861590Srgrimes} 1871590Srgrimes 1881590Srgrimesstatic struct pitem { 1891590Srgrimes long port; 1901590Srgrimes int onoff; 1911590Srgrimes} *ports; 1921590Srgrimes 1931590Srgrimesstatic int 1941590Srgrimesselectport(port, onoff) 1951590Srgrimes long port; 1961590Srgrimes int onoff; 1971590Srgrimes{ 1981590Srgrimes register struct pitem *p; 1991590Srgrimes 2001590Srgrimes if (port == -1) { 2011590Srgrimes if (ports == 0) 2021590Srgrimes return (0); 2031590Srgrimes free((char *)ports), ports = 0; 2041590Srgrimes nports = 0; 2051590Srgrimes return (1); 2061590Srgrimes } 2071590Srgrimes for (p = ports; p < ports+nports; p++) 2081590Srgrimes if (p->port == port) { 2091590Srgrimes p->onoff = onoff; 2101590Srgrimes return (0); 2111590Srgrimes } 2121590Srgrimes if (nports == 0) 2131590Srgrimes ports = (struct pitem *)malloc(sizeof (*p)); 2141590Srgrimes else 2151590Srgrimes ports = (struct pitem *)realloc(ports, (nports+1)*sizeof (*p)); 2161590Srgrimes p = &ports[nports++]; 2171590Srgrimes p->port = port; 2181590Srgrimes p->onoff = onoff; 2191590Srgrimes return (1); 2201590Srgrimes} 2211590Srgrimes 2221590Srgrimesint 2231590Srgrimescheckport(inp) 2241590Srgrimes register struct inpcb *inp; 2251590Srgrimes{ 2261590Srgrimes register struct pitem *p; 2271590Srgrimes 2281590Srgrimes if (ports) 2291590Srgrimes for (p = ports; p < ports+nports; p++) 2301590Srgrimes if (p->port == inp->inp_lport || p->port == inp->inp_fport) 2311590Srgrimes return (p->onoff); 2321590Srgrimes return (1); 2331590Srgrimes} 2341590Srgrimes 2351590Srgrimesstatic void 2361590Srgrimesshowports() 2371590Srgrimes{ 2381590Srgrimes register struct pitem *p; 2391590Srgrimes struct servent *sp; 2401590Srgrimes 2411590Srgrimes for (p = ports; p < ports+nports; p++) { 2421590Srgrimes sp = getservbyport(p->port, 2431590Srgrimes protos == TCP|UDP ? 0 : protos == TCP ? "tcp" : "udp"); 2441590Srgrimes if (!p->onoff) 2451590Srgrimes addch('!'); 2461590Srgrimes if (sp) 2471590Srgrimes printw("%s ", sp->s_name); 2481590Srgrimes else 2491590Srgrimes printw("%d ", p->port); 2501590Srgrimes } 2511590Srgrimes} 2521590Srgrimes 2531590Srgrimesstatic int 2541590Srgrimesselecthost(in, onoff) 2551590Srgrimes struct in_addr *in; 2561590Srgrimes int onoff; 2571590Srgrimes{ 2581590Srgrimes register struct hitem *p; 2591590Srgrimes 2601590Srgrimes if (in == 0) { 2611590Srgrimes if (hosts == 0) 2621590Srgrimes return (0); 2631590Srgrimes free((char *)hosts), hosts = 0; 2641590Srgrimes nhosts = 0; 2651590Srgrimes return (1); 2661590Srgrimes } 2671590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 2681590Srgrimes if (p->addr.s_addr == in->s_addr) { 2691590Srgrimes p->onoff = onoff; 2701590Srgrimes return (0); 2711590Srgrimes } 2721590Srgrimes if (nhosts == 0) 2731590Srgrimes hosts = (struct hitem *)malloc(sizeof (*p)); 2741590Srgrimes else 2751590Srgrimes hosts = (struct hitem *)realloc(hosts, (nhosts+1)*sizeof (*p)); 2761590Srgrimes p = &hosts[nhosts++]; 2771590Srgrimes p->addr = *in; 2781590Srgrimes p->onoff = onoff; 2791590Srgrimes return (1); 2801590Srgrimes} 2811590Srgrimes 2821590Srgrimesint 2831590Srgrimescheckhost(inp) 2841590Srgrimes register struct inpcb *inp; 2851590Srgrimes{ 2861590Srgrimes register struct hitem *p; 2871590Srgrimes 2881590Srgrimes if (hosts) 2891590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 2901590Srgrimes if (p->addr.s_addr == inp->inp_laddr.s_addr || 2911590Srgrimes p->addr.s_addr == inp->inp_faddr.s_addr) 2921590Srgrimes return (p->onoff); 2931590Srgrimes return (1); 2941590Srgrimes} 2951590Srgrimes 2961590Srgrimesstatic void 2971590Srgrimesshowhosts() 2981590Srgrimes{ 2991590Srgrimes register struct hitem *p; 3001590Srgrimes struct hostent *hp; 3011590Srgrimes 3021590Srgrimes for (p = hosts; p < hosts+nhosts; p++) { 3031590Srgrimes hp = gethostbyaddr((char *)&p->addr, sizeof (p->addr), AF_INET); 3041590Srgrimes if (!p->onoff) 3051590Srgrimes addch('!'); 3061590Srgrimes printw("%s ", hp ? hp->h_name : (char *)inet_ntoa(p->addr)); 3071590Srgrimes } 3081590Srgrimes} 309