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Annotation of 43BSDReno/sbin/routed/trace/trace.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983,1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: char copyright[] =
        !            20: "@(#) Copyright (c) 1983,1988 Regents of the University of California.\n\
        !            21:  All rights reserved.\n";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #ifndef lint
        !            25: static char sccsid[] = "@(#)trace.c    5.7 (Berkeley) 2/18/89";
        !            26: #endif /* not lint */
        !            27: 
        !            28: #include <sys/param.h>
        !            29: #include <sys/protosw.h>
        !            30: #include <sys/socket.h>
        !            31: #include <netinet/in.h>
        !            32: #include <errno.h>
        !            33: #include <stdio.h>
        !            34: #include <netdb.h>
        !            35: #include <protocols/routed.h>
        !            36: 
        !            37: struct sockaddr_in myaddr;
        !            38: char   packet[MAXPACKETSIZE];
        !            39: 
        !            40: main(argc, argv)
        !            41:        int argc;
        !            42:        char *argv[];
        !            43: {
        !            44:        int size, s;
        !            45:        struct sockaddr from;
        !            46:        struct sockaddr_in router;
        !            47:        register struct rip *msg = (struct rip *)packet;
        !            48:        struct hostent *hp;
        !            49:        struct servent *sp;
        !            50:        
        !            51:        if (argc < 3) {
        !            52: usage:
        !            53:                printf("usage: trace cmd machines,\n");
        !            54:                printf("cmd either \"on filename\", or \"off\"\n");
        !            55:                exit(1);
        !            56:        }
        !            57:        s = socket(AF_INET, SOCK_DGRAM, 0);
        !            58:        if (s < 0) {
        !            59:                perror("socket");
        !            60:                exit(2);
        !            61:        }
        !            62:        myaddr.sin_family = AF_INET;
        !            63:        myaddr.sin_port = htons(IPPORT_RESERVED-1);
        !            64:        if (bind(s, &myaddr, sizeof(myaddr)) < 0) {
        !            65:                perror("bind");
        !            66:                exit(2);
        !            67:        }
        !            68: 
        !            69:        argv++, argc--;
        !            70:        msg->rip_cmd = strcmp(*argv, "on") == 0 ?
        !            71:                RIPCMD_TRACEON : RIPCMD_TRACEOFF;
        !            72:        msg->rip_vers = RIPVERSION;
        !            73:        argv++, argc--;
        !            74:        size = sizeof (int);
        !            75:        if (msg->rip_cmd == RIPCMD_TRACEON) {
        !            76:                strcpy(msg->rip_tracefile, *argv);
        !            77:                size += strlen(*argv);
        !            78:                argv++, argc--;
        !            79:        }
        !            80:        if (argc == 0)
        !            81:                goto usage;
        !            82:        bzero((char *)&router, sizeof (router));
        !            83:        router.sin_family = AF_INET;
        !            84:        sp = getservbyname("router", "udp");
        !            85:        if (sp == 0) {
        !            86:                printf("udp/router: service unknown\n");
        !            87:                exit(1);
        !            88:        }
        !            89:        router.sin_port = sp->s_port;
        !            90:        while (argc > 0) {
        !            91:                router.sin_family = AF_INET;
        !            92:                router.sin_addr.s_addr = inet_addr(*argv);
        !            93:                if (router.sin_addr.s_addr == -1) {
        !            94:                        hp = gethostbyname(*argv);
        !            95:                        if (hp == NULL) {
        !            96:                                fprintf(stderr, "trace: %s: ", *argv);
        !            97:                                herror((char *)NULL);
        !            98:                                continue;
        !            99:                        }
        !           100:                        bcopy(hp->h_addr, &router.sin_addr, hp->h_length);
        !           101:                }
        !           102:                if (sendto(s, packet, size, 0, &router, sizeof(router)) < 0)
        !           103:                        perror(*argv);
        !           104:                argv++, argc--;
        !           105:        }
        !           106: }

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