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/* This code is in the public domain. */
#include <mowgli.h>
typedef struct
{
char *domain;
mowgli_dns_query_t query;
} dns_query;
static void
resolve_cb(mowgli_dns_reply_t *reply, int reason, void *vptr)
{
char buf[2048];
dns_query *dnsquery = vptr;
const void *sockptr;
if (reply == NULL)
{
printf("Got null reply for %s\n", dnsquery->domain);
switch (reason)
{
case MOWGLI_DNS_RES_NXDOMAIN:
printf("Nonexistent domain\n");
break;
case MOWGLI_DNS_RES_INVALID:
printf("Invalid domain\n");
break;
case MOWGLI_DNS_RES_TIMEOUT:
printf("Timed out\n");
break;
}
goto end;
}
printf("Finished %s\n", dnsquery->domain);
printf("Hostname: %s\n", reply->h_name);
if (reply->addr.addr.ss_family == AF_INET)
{
const struct sockaddr_in *saddr = (const struct sockaddr_in *) &reply->addr.addr;
sockptr = &saddr->sin_addr;
}
else if (reply->addr.addr.ss_family == AF_INET6)
{
const struct sockaddr_in6 *saddr = (const struct sockaddr_in6 *) &reply->addr.addr;
sockptr = &saddr->sin6_addr;
}
else
{
printf("Invalid Address family %d\n", reply->addr.addr.ss_family);
return;
}
inet_ntop(reply->addr.addr.ss_family, sockptr, buf, sizeof(buf));
printf("Resolved: %s\n", buf);
end:
mowgli_free(dnsquery->domain);
mowgli_free(vptr);
}
static void
read_data(mowgli_eventloop_t *eventloop, mowgli_eventloop_io_t *io, mowgli_eventloop_io_dir_t dir, void *userdata)
{
mowgli_eventloop_pollable_t *pollable = mowgli_eventloop_io_pollable(io);
mowgli_dns_t *dns = userdata;
char buf[2048];
char *ch;
int ret;
return_if_fail(pollable->fd == STDIN_FILENO);
if ((ret = read(pollable->fd, buf, sizeof(buf))) < 0)
{
perror("read");
mowgli_pollable_destroy(eventloop, io);
return;
}
else if (ret == 0)
{
return;
}
buf[--ret] = '\0';
ch = strtok(buf, " ");
while (ch != NULL)
{
dns_query *dnsquery = mowgli_alloc(sizeof(dns_query));
mowgli_dns_query_t *query = &dnsquery->query;
printf("Domain input: %s\n", ch);
printf("End domain input\n");
query->callback = resolve_cb;
query->ptr = dnsquery;
dnsquery->domain = mowgli_strdup(ch);
if (*ch == '+')
{
int type;
void *addrptr;
struct sockaddr_storage addr;
if (strchr(++ch, ':') != NULL)
{
struct sockaddr_in6 *saddr = (struct sockaddr_in6 *) &addr;
type = AF_INET6;
addrptr = &saddr->sin6_addr;
}
else
{
struct sockaddr_in *saddr = (struct sockaddr_in *) &addr;
type = AF_INET;
addrptr = &saddr->sin_addr;
}
addr.ss_family = type;
if ((ret = inet_pton(type, ch, addrptr)) != 1)
{
if (ret == -1)
perror("inet_pton");
else
printf("Invalid address %s\n", ch);
return;
}
mowgli_dns_gethost_byaddr(dns, &addr, query);
}
else
{
mowgli_dns_gethost_byname(dns, ch, query, MOWGLI_DNS_T_A);
}
dnsquery->domain = mowgli_strdup(ch);
ch = strtok(NULL, " ");
}
}
int
main(void)
{
mowgli_eventloop_t *evloop = mowgli_eventloop_create();
mowgli_dns_t *dns = mowgli_dns_create(evloop, MOWGLI_DNS_TYPE_ASYNC);
mowgli_eventloop_pollable_t *stdin_pollable = mowgli_pollable_create(evloop, STDIN_FILENO, dns);
mowgli_pollable_set_nonblocking(stdin_pollable, true);
mowgli_pollable_setselect(evloop, stdin_pollable, MOWGLI_EVENTLOOP_IO_READ, read_data);
mowgli_eventloop_run(evloop);
mowgli_eventloop_destroy(evloop);
return 0;
}
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