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Annotation of 42BSD/etc/routed/tools/trace.c, revision 1.1.1.1

1.1       root        1: #ifndef lint
                      2: static char sccsid[] = "@(#)trace.c    4.2 10/6/82";
                      3: #endif
                      4: 
                      5: #include <sys/param.h>
                      6: #include <sys/protosw.h>
                      7: #include <sys/socket.h>
                      8: #include <net/in.h>
                      9: #include <errno.h>
                     10: #include <stdio.h>
                     11: #include <netdb.h>
                     12: #include "rip.h"
                     13: 
                     14: struct sockaddr_in myaddr = { AF_INET, IPPORT_RESERVED-1 };
                     15: 
                     16: main(argc, argv)
                     17:        int argc;
                     18:        char *argv[];
                     19: {
                     20:        int size, s;
                     21:        struct sockaddr from;
                     22:        struct sockaddr_in router;
                     23:        char packet[MAXPACKETSIZE];
                     24:        register struct rip *msg = (struct rip *)packet;
                     25:        struct hostent *hp;
                     26:        struct servent *sp;
                     27:        
                     28:        if (argc < 3) {
                     29: usage:
                     30:                printf("usage: trace cmd machines,\n");
                     31:                printf("cmd either \"on filename\", or \"off\"\n");
                     32:                exit(1);
                     33:        }
                     34: #ifdef vax || pdp11
                     35:        myaddr.sin_port = htons(myaddr.sin_port);
                     36: #endif
                     37:        s = socket(SOCK_DGRAM, 0, &myaddr, 0);
                     38:        if (s < 0) {
                     39:                perror("socket");
                     40:                exit(2);
                     41:        }
                     42:        argv++, argc--;
                     43:        msg->rip_cmd = strcmp(*argv, "on") == 0 ?
                     44:                RIPCMD_TRACEON : RIPCMD_TRACEOFF;
                     45:        argv++, argc--;
                     46:        size = sizeof (int);
                     47:        if (msg->rip_cmd == RIPCMD_TRACEON) {
                     48:                strcpy(msg->rip_tracefile, *argv);
                     49:                size += strlen(*argv);
                     50:                argv++, argc--;
                     51:        }
                     52:        if (argc == 0)
                     53:                goto usage;
                     54:        bzero((char *)&router, sizeof (router));
                     55:        router.sin_family = AF_INET;
                     56:        sp = getservbyname("router", "udp");
                     57:        if (sp == 0) {
                     58:                printf("udp/router: service unknown\n");
                     59:                exit(1);
                     60:        }
                     61:        router.sin_port = htons(sp->s_port);
                     62:        while (argc > 0) {
                     63:                hp = gethostbyname(*argv);
                     64:                if (hp == 0) {
                     65:                        printf("%s: unknown\n", *argv);
                     66:                        continue;
                     67:                }
                     68:                bcopy(hp->h_addr, &router.sin_addr, hp->h_length);
                     69:                if (send(s, &router, packet, size) < 0)
                     70:                        perror(*argv);
                     71:                argv++, argc--;
                     72:        }
                     73: }

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