http://ramblings.narrabilis.com/wp Scripts, settings, and fixes... Thu, 29 Jul 2010 13:29:37 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 http://ramblings.narrabilis.com/wp/gethostbyaddr/ http://ramblings.narrabilis.com/wp/gethostbyaddr/#comments Tue, 28 Mar 2006 19:31:44 +0000 uphill http://ramblings.narrabilis.com/wp/gethostbyaddr/ #include <unistd.h>
#include <netdb.h>
#include <netinet/in.h>

int main(int argc, char **argv) {
    struct hostent *hostname = malloc(sizeof(struct hostent));
    extern int h_errno;

    struct in_addr *ipaddr = malloc(sizeof(struct in_addr));
    ipaddr->s_addr=inet_addr(argv[1]) ;
    if ( (hostname = gethostbyaddr((char *) ipaddr,sizeof(ipaddr),AF_INET)) == NULL ) {
        printf ("%s\n","unknown");
        exit(1);
    }
    printf ("%s\n",hostname -> h_name);
}
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