dnsresolve.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Sun, 24 Oct 2010 20:55:54 +0200
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/**
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 * dnsresolve.c
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 * Copyright (C) 2008 Markus Broeker
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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int main (int argc, char **argv)
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{
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    struct hostent *he;
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    char *ip;
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    int i = 0;
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    if (argc != 2) {
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        fprintf (stderr, "Usage: %s <hostname>\n", argv[0]);
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        return EXIT_FAILURE;
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    }
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    he = gethostbyname (argv[1]);
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    ip = NULL;
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    if (he != NULL) {
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        while (he->h_addr_list[i] != NULL) {
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            ip = inet_ntoa (*((struct in_addr *)he->h_addr_list[i]));
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            printf ("%s: %s\n", argv[1], ip);
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            i++;
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        }
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    }
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    return EXIT_SUCCESS;
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}