Function get_host_by_name

cdb2api/cdb2api.c:1674–1716

populate comdb2db_hosts based on hostname info of comdb2db_name * returns -1 if error or no osts wa found * returns 0 if hosts were found * this function has functionality similar to cdb2_tcpresolve() */

 * this function has functionality similar to cdb2_tcpresolve()
 */
static int get_host_by_name(const char *comdb2db_name, char comdb2db_hosts[][CDB2HOSTNAME_LEN], int *num_hosts)
{
    struct hostent *hp = NULL;
    char dns_name[512];

    if (cdb2_default_cluster[0] == '\0') {
        snprintf(dns_name, sizeof(dns_name), "%s.%s", comdb2db_name, cdb2_dnssuffix);
    } else {
        snprintf(dns_name, sizeof(dns_name), "%s-%s.%s", cdb2_default_cluster, comdb2db_name,
                 cdb2_dnssuffix);
    }
#ifdef __APPLE__
    hp = gethostbyname(dns_name);
#elif _LINUX_SOURCE
    int herr;
    char tmp[8192];
    int tmplen = sizeof(tmp);
    struct hostent hostbuf;
    gethostbyname_r(dns_name, &hostbuf, tmp, tmplen, &hp, &herr);
#elif _SUN_SOURCE
    int herr;
    char tmp[8192];
    int tmplen = sizeof(tmp);
    struct hostent hostbuf;
    hp = gethostbyname_r(dns_name, &hostbuf, tmp, tmplen, &herr);
#else
    hp = gethostbyname(dns_name);
#endif
    if (!hp) {
        fprintf(stderr, "%s:gethostbyname(%s): errno=%d err=%s\n", __func__,
                dns_name, errno, strerror(errno));
        return -1;
    }

    int rc = -1;
    struct in_addr **addr_list = (struct in_addr **)hp->h_addr_list;
    for (int i = 0; addr_list[i] != NULL; i++) {
        strcpy(comdb2db_hosts[i], inet_ntoa(*addr_list[i]));
        (*num_hosts)++;
        rc = 0;
    }
    return rc;
}

static int get_comdb2db_hosts(cdb2_hndl_tp *hndl, char comdb2db_hosts[][CDB2HOSTNAME_LEN], int *comdb2db_ports,
                              int *master, const char *comdb2db_name, int *num_hosts, int *comdb2db_num,