1 /*- 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1983, 1988, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)trace.c 8.2 (Berkeley) 04/28/95"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/protosw.h> 20 #include <sys/socket.h> 21 #include <netinet/in.h> 22 #include <protocols/routed.h> 23 #include <arpa/inet.h> 24 #include <netdb.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 29 struct sockaddr_in myaddr; 30 char packet[MAXPACKETSIZE]; 31 32 main(argc, argv) 33 int argc; 34 char **argv; 35 { 36 int size, s; 37 struct sockaddr from; 38 struct sockaddr_in router; 39 register struct rip *msg = (struct rip *)packet; 40 struct hostent *hp; 41 struct servent *sp; 42 43 if (argc < 3) { 44 usage: 45 printf("usage: trace cmd machines,\n"); 46 printf("cmd either \"on filename\", or \"off\"\n"); 47 exit(1); 48 } 49 s = socket(AF_INET, SOCK_DGRAM, 0); 50 if (s < 0) { 51 perror("socket"); 52 exit(2); 53 } 54 myaddr.sin_family = AF_INET; 55 myaddr.sin_port = htons(IPPORT_RESERVED-1); 56 if (bind(s, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0) { 57 perror("bind"); 58 exit(2); 59 } 60 61 argv++, argc--; 62 msg->rip_cmd = strcmp(*argv, "on") == 0 ? 63 RIPCMD_TRACEON : RIPCMD_TRACEOFF; 64 msg->rip_vers = RIPVERSION; 65 argv++, argc--; 66 size = sizeof (int); 67 if (msg->rip_cmd == RIPCMD_TRACEON) { 68 strcpy(msg->rip_tracefile, *argv); 69 size += strlen(*argv); 70 argv++, argc--; 71 } 72 if (argc == 0) 73 goto usage; 74 memset(&router, 0, sizeof (router)); 75 router.sin_family = AF_INET; 76 sp = getservbyname("router", "udp"); 77 if (sp == 0) { 78 printf("udp/router: service unknown\n"); 79 exit(1); 80 } 81 router.sin_port = sp->s_port; 82 while (argc > 0) { 83 router.sin_family = AF_INET; 84 router.sin_addr.s_addr = inet_addr(*argv); 85 if (router.sin_addr.s_addr == -1) { 86 hp = gethostbyname(*argv); 87 if (hp == NULL) { 88 fprintf(stderr, "trace: %s: ", *argv); 89 herror((char *)NULL); 90 continue; 91 } 92 memmove(&router.sin_addr, hp->h_addr, hp->h_length); 93 } 94 if (sendto(s, packet, size, 0, 95 (struct sockaddr *)&router, sizeof(router)) < 0) 96 perror(*argv); 97 argv++, argc--; 98 } 99 } 100