netcmds.c revision 14543
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> 4214543Sdg#include <sys/queue.h> 431590Srgrimes#include <sys/socket.h> 441590Srgrimes#include <sys/socketvar.h> 451590Srgrimes#include <sys/mbuf.h> 461590Srgrimes#include <sys/protosw.h> 471590Srgrimes 481590Srgrimes#include <net/route.h> 491590Srgrimes#include <netinet/in.h> 501590Srgrimes#include <netinet/in_systm.h> 511590Srgrimes#include <netinet/ip.h> 521590Srgrimes#include <netinet/in_pcb.h> 531590Srgrimes 541590Srgrimes#include <netdb.h> 551590Srgrimes#include <stdlib.h> 561590Srgrimes#include <string.h> 571590Srgrimes#include <ctype.h> 581590Srgrimes#include "systat.h" 591590Srgrimes#include "extern.h" 601590Srgrimes 611590Srgrimes#define streq(a,b) (strcmp(a,b)==0) 621590Srgrimes 631590Srgrimesstatic struct hitem { 641590Srgrimes struct in_addr addr; 651590Srgrimes int onoff; 661590Srgrimes} *hosts; 671590Srgrimes 681590Srgrimesint nports, nhosts, protos; 691590Srgrimes 701590Srgrimesstatic void changeitems __P((char *, int)); 711590Srgrimesstatic int selectproto __P((char *)); 721590Srgrimesstatic void showprotos __P((void)); 731590Srgrimesstatic int selectport __P((long, int)); 741590Srgrimesstatic void showports __P((void)); 751590Srgrimesstatic int selecthost __P((struct in_addr *, int)); 761590Srgrimesstatic void showhosts __P((void)); 771590Srgrimes 781590Srgrimesint 791590Srgrimesnetcmd(cmd, args) 801590Srgrimes char *cmd, *args; 811590Srgrimes{ 821590Srgrimes 831590Srgrimes if (prefix(cmd, "tcp") || prefix(cmd, "udp")) { 841590Srgrimes selectproto(cmd); 851590Srgrimes return (1); 861590Srgrimes } 871590Srgrimes if (prefix(cmd, "ignore") || prefix(cmd, "display")) { 881590Srgrimes changeitems(args, prefix(cmd, "display")); 891590Srgrimes return (1); 901590Srgrimes } 911590Srgrimes if (prefix(cmd, "reset")) { 921590Srgrimes selectproto(0); 931590Srgrimes selecthost(0, 0); 941590Srgrimes selectport(-1, 0); 951590Srgrimes return (1); 961590Srgrimes } 971590Srgrimes if (prefix(cmd, "show")) { 981590Srgrimes move(CMDLINE, 0); clrtoeol(); 991590Srgrimes if (*args == '\0') { 1001590Srgrimes showprotos(); 1011590Srgrimes showhosts(); 1021590Srgrimes showports(); 1031590Srgrimes return (1); 1041590Srgrimes } 1051590Srgrimes if (prefix(args, "protos")) 1061590Srgrimes showprotos(); 1071590Srgrimes else if (prefix(args, "hosts")) 1081590Srgrimes showhosts(); 1091590Srgrimes else if (prefix(args, "ports")) 1101590Srgrimes showports(); 1111590Srgrimes else 1121590Srgrimes addstr("show what?"); 1131590Srgrimes return (1); 1141590Srgrimes } 1151590Srgrimes return (0); 1161590Srgrimes} 1171590Srgrimes 1181590Srgrimes 1191590Srgrimesstatic void 1201590Srgrimeschangeitems(args, onoff) 1211590Srgrimes char *args; 1221590Srgrimes int onoff; 1231590Srgrimes{ 1241590Srgrimes register char *cp; 1251590Srgrimes struct servent *sp; 1261590Srgrimes struct hostent *hp; 1271590Srgrimes struct in_addr in; 1281590Srgrimes char *index(); 1291590Srgrimes 1301590Srgrimes cp = index(args, '\n'); 1311590Srgrimes if (cp) 1321590Srgrimes *cp = '\0'; 1331590Srgrimes for (;;args = cp) { 1341590Srgrimes for (cp = args; *cp && isspace(*cp); cp++) 1351590Srgrimes ; 1361590Srgrimes args = cp; 1371590Srgrimes for (; *cp && !isspace(*cp); cp++) 1381590Srgrimes ; 1391590Srgrimes if (*cp) 1401590Srgrimes *cp++ = '\0'; 1411590Srgrimes if (cp - args == 0) 1421590Srgrimes break; 1431590Srgrimes sp = getservbyname(args, 1441590Srgrimes protos == TCP ? "tcp" : protos == UDP ? "udp" : 0); 1451590Srgrimes if (sp) { 1461590Srgrimes selectport(sp->s_port, onoff); 1471590Srgrimes continue; 1481590Srgrimes } 1491590Srgrimes hp = gethostbyname(args); 1501590Srgrimes if (hp == 0) { 1511590Srgrimes in.s_addr = inet_addr(args); 1521590Srgrimes if (in.s_addr == -1) { 1531590Srgrimes error("%s: unknown host or port", args); 1541590Srgrimes continue; 1551590Srgrimes } 1561590Srgrimes } else 1571590Srgrimes in = *(struct in_addr *)hp->h_addr; 1581590Srgrimes selecthost(&in, onoff); 1591590Srgrimes } 1601590Srgrimes} 1611590Srgrimes 1621590Srgrimesstatic int 1631590Srgrimesselectproto(proto) 1641590Srgrimes char *proto; 1651590Srgrimes{ 1661590Srgrimes int new = protos; 1671590Srgrimes 1681590Srgrimes if (proto == 0 || streq(proto, "all")) 1691590Srgrimes new = TCP|UDP; 1701590Srgrimes else if (streq(proto, "tcp")) 1711590Srgrimes new = TCP; 1721590Srgrimes else if (streq(proto, "udp")) 1731590Srgrimes new = UDP; 1741590Srgrimes return (new != protos, protos = new); 1751590Srgrimes} 1761590Srgrimes 1771590Srgrimesstatic void 1781590Srgrimesshowprotos() 1791590Srgrimes{ 1801590Srgrimes 1811590Srgrimes if ((protos&TCP) == 0) 1821590Srgrimes addch('!'); 1831590Srgrimes addstr("tcp "); 1841590Srgrimes if ((protos&UDP) == 0) 1851590Srgrimes addch('!'); 1861590Srgrimes addstr("udp "); 1871590Srgrimes} 1881590Srgrimes 1891590Srgrimesstatic struct pitem { 1901590Srgrimes long port; 1911590Srgrimes int onoff; 1921590Srgrimes} *ports; 1931590Srgrimes 1941590Srgrimesstatic int 1951590Srgrimesselectport(port, onoff) 1961590Srgrimes long port; 1971590Srgrimes int onoff; 1981590Srgrimes{ 1991590Srgrimes register struct pitem *p; 2001590Srgrimes 2011590Srgrimes if (port == -1) { 2021590Srgrimes if (ports == 0) 2031590Srgrimes return (0); 2041590Srgrimes free((char *)ports), ports = 0; 2051590Srgrimes nports = 0; 2061590Srgrimes return (1); 2071590Srgrimes } 2081590Srgrimes for (p = ports; p < ports+nports; p++) 2091590Srgrimes if (p->port == port) { 2101590Srgrimes p->onoff = onoff; 2111590Srgrimes return (0); 2121590Srgrimes } 2131590Srgrimes if (nports == 0) 2141590Srgrimes ports = (struct pitem *)malloc(sizeof (*p)); 2151590Srgrimes else 2161590Srgrimes ports = (struct pitem *)realloc(ports, (nports+1)*sizeof (*p)); 2171590Srgrimes p = &ports[nports++]; 2181590Srgrimes p->port = port; 2191590Srgrimes p->onoff = onoff; 2201590Srgrimes return (1); 2211590Srgrimes} 2221590Srgrimes 2231590Srgrimesint 2241590Srgrimescheckport(inp) 2251590Srgrimes register struct inpcb *inp; 2261590Srgrimes{ 2271590Srgrimes register struct pitem *p; 2281590Srgrimes 2291590Srgrimes if (ports) 2301590Srgrimes for (p = ports; p < ports+nports; p++) 2311590Srgrimes if (p->port == inp->inp_lport || p->port == inp->inp_fport) 2321590Srgrimes return (p->onoff); 2331590Srgrimes return (1); 2341590Srgrimes} 2351590Srgrimes 2361590Srgrimesstatic void 2371590Srgrimesshowports() 2381590Srgrimes{ 2391590Srgrimes register struct pitem *p; 2401590Srgrimes struct servent *sp; 2411590Srgrimes 2421590Srgrimes for (p = ports; p < ports+nports; p++) { 2431590Srgrimes sp = getservbyport(p->port, 2441590Srgrimes protos == TCP|UDP ? 0 : protos == TCP ? "tcp" : "udp"); 2451590Srgrimes if (!p->onoff) 2461590Srgrimes addch('!'); 2471590Srgrimes if (sp) 2481590Srgrimes printw("%s ", sp->s_name); 2491590Srgrimes else 2501590Srgrimes printw("%d ", p->port); 2511590Srgrimes } 2521590Srgrimes} 2531590Srgrimes 2541590Srgrimesstatic int 2551590Srgrimesselecthost(in, onoff) 2561590Srgrimes struct in_addr *in; 2571590Srgrimes int onoff; 2581590Srgrimes{ 2591590Srgrimes register struct hitem *p; 2601590Srgrimes 2611590Srgrimes if (in == 0) { 2621590Srgrimes if (hosts == 0) 2631590Srgrimes return (0); 2641590Srgrimes free((char *)hosts), hosts = 0; 2651590Srgrimes nhosts = 0; 2661590Srgrimes return (1); 2671590Srgrimes } 2681590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 2691590Srgrimes if (p->addr.s_addr == in->s_addr) { 2701590Srgrimes p->onoff = onoff; 2711590Srgrimes return (0); 2721590Srgrimes } 2731590Srgrimes if (nhosts == 0) 2741590Srgrimes hosts = (struct hitem *)malloc(sizeof (*p)); 2751590Srgrimes else 2761590Srgrimes hosts = (struct hitem *)realloc(hosts, (nhosts+1)*sizeof (*p)); 2771590Srgrimes p = &hosts[nhosts++]; 2781590Srgrimes p->addr = *in; 2791590Srgrimes p->onoff = onoff; 2801590Srgrimes return (1); 2811590Srgrimes} 2821590Srgrimes 2831590Srgrimesint 2841590Srgrimescheckhost(inp) 2851590Srgrimes register struct inpcb *inp; 2861590Srgrimes{ 2871590Srgrimes register struct hitem *p; 2881590Srgrimes 2891590Srgrimes if (hosts) 2901590Srgrimes for (p = hosts; p < hosts+nhosts; p++) 2911590Srgrimes if (p->addr.s_addr == inp->inp_laddr.s_addr || 2921590Srgrimes p->addr.s_addr == inp->inp_faddr.s_addr) 2931590Srgrimes return (p->onoff); 2941590Srgrimes return (1); 2951590Srgrimes} 2961590Srgrimes 2971590Srgrimesstatic void 2981590Srgrimesshowhosts() 2991590Srgrimes{ 3001590Srgrimes register struct hitem *p; 3011590Srgrimes struct hostent *hp; 3021590Srgrimes 3031590Srgrimes for (p = hosts; p < hosts+nhosts; p++) { 3041590Srgrimes hp = gethostbyaddr((char *)&p->addr, sizeof (p->addr), AF_INET); 3051590Srgrimes if (!p->onoff) 3061590Srgrimes addch('!'); 3071590Srgrimes printw("%s ", hp ? hp->h_name : (char *)inet_ntoa(p->addr)); 3081590Srgrimes } 3091590Srgrimes} 310