Re: Whois

[Gerrit P. Haase]

Bob Zimmerman schrieb am 2001-06-29, 7:23:

> Is there a port of WHOIS? 

I don't know who wrote it, i found it in the cygwin archives:

/*
 * Cygwin whois
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>

#define NICHOST         "whois.internic.net"
#define DNICHOST        "whois.nic.mil"
#define GNICHOST        "whois.nic.gov"
#define ANICHOST        "whois.arin.net"
#define RNICHOST        "whois.ripe.net"
#define PNICHOST        "whois.apnic.net"
#define RUNICHOST   "whois.ripn.net"
#define DENICHOST   "whois.nic.de"
#define WHOIS_PORT      43

static void usage (void);

int
main(int argc, char **argv)
{
        register FILE *sfi, *sfo;
        register int ch;
        struct sockaddr_in sin;
        struct hostent *hp;
        struct servent *sp;
        int s;
        char *host;

#ifdef  SOCKS
        SOCKSinit(argv[0]);
#endif

        host = NICHOST;
        while ((ch = getopt(argc, argv, "badgh:prR")) != -1)
                switch((char)ch) {
                case 'b':
                        host = DENICHOST;
                        break;
                case 'a':
                        host = ANICHOST;
                        break;
                case 'd':
                        host = DNICHOST;
                        break;
                case 'g':
                        host = GNICHOST;
                        break;
                case 'h':
                        host = optarg;
                        break;
                case 'p':
                        host = PNICHOST;
                        break;
                case 'r':
                        host = RNICHOST;
                        break;
                case 'R':
                        host = RUNICHOST;
                        break;
                case '?':
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;

        if (!argc)
                usage();

        s = socket(PF_INET, SOCK_STREAM, 0);
        if (s < 0){
                fprintf(stderr, "%s: %s", "socket", strerror(errno));
                return -1;
        }

        memset(&sin, 0, sizeof sin);
/*      sin.sin_len = sizeof sin; */
        sin.sin_family = AF_INET;
        
        hp = gethostbyname(host);
        if (hp == NULL){
                fprintf(stderr, "%s: %s", host, "gethostbyname() failed\n");
                return -2;
        }
        host = (char *)hp->h_name;
        sin.sin_addr = *(struct in_addr *)hp->h_addr_list[0];

        sp = getservbyname("whois", "tcp");
        if (sp == NULL)
                sin.sin_port = htons(WHOIS_PORT);
        else
                sin.sin_port = sp->s_port;

        if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0){
                fprintf(stderr, "%s: %s", "connect", strerror(errno));
                return -3;
        }

        sfi = fdopen(s, "r");
        sfo = fdopen(s, "w");
        if (sfi == NULL || sfo == NULL){
                fprintf(stderr, "%s: %s", "fdopen", strerror(errno));
                return -5;
        }
        while (argc-- > 1)
                (void)fprintf(sfo, "%s ", *argv++);
        (void)fprintf(sfo, "%s\r\n", *argv);
        (void)fflush(sfo);
        while ((ch = getc(sfi)) != EOF)
                putchar(ch);
        exit(0);
}

static void
usage()
{
        fprintf(stderr, "usage: whois [-badgprR] [-h hostname] name ...\n");
        exit(-5);
}


/* gph */

-- 
=^..^=

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