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/*
* File: gai.c
* Author: Matthias Andree
*
* Created on 3. Februar 2013, 15:03
* A short file to call getaddrinfo with the same arguments as checkalias.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
/*
*
*/
int main(int argc, char** argv) {
struct addrinfo hints;
struct addrinfo *res;
if (argc != 2 || 0 == strcmp("-h", argv[1])) {
fprintf(stderr, "Usage: %s hostname\n", argv[0]);
exit(EXIT_FAILURE);
}
memset(&hints, 0, sizeof hints);
hints.ai_family=AF_UNSPEC;
hints.ai_protocol=PF_UNSPEC;
hints.ai_socktype=SOCK_STREAM;
hints.ai_flags=AI_CANONNAME;
int result = getaddrinfo(argv[1], NULL, &hints, &res);
if (result) {
fprintf(stderr, "getaddrinfo(\"%s\", ...AI_CANONNAME...) failed: %d (%s)\n", argv[1], result, gai_strerror(result));
exit(EXIT_FAILURE);
}
freeaddrinfo(res);
return (EXIT_SUCCESS);
}
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