static void
host_resolved(gpointer data, gint source, PurpleInputCondition cond)
{
PurpleDnsQueryData *query_data;
int rc, err;
GSList *hosts = NULL;
struct sockaddr *addr = NULL;
size_t addrlen;
char message[1024];
query_data = data;
purple_debug_info("dns", "Got response for '%s'\n", query_data->hostname);
purple_input_remove(query_data->resolver->inpa);
query_data->resolver->inpa = 0;
rc = read(query_data->resolver->fd_out, &err, sizeof(err));
if ((rc == 4) && (err != 0))
{
#ifdef HAVE_GETADDRINFO
g_snprintf(message, sizeof(message), _("Error resolving %s:\n%s"),
query_data->hostname, purple_gai_strerror(err));
#else
g_snprintf(message, sizeof(message), _("Error resolving %s: %d"),
query_data->hostname, err);
#endif
/* Re-read resolv.conf and friends in case DNS servers have changed */
res_init();
purple_dnsquery_failed(query_data, message);
} else if (rc > 0) {
/* Success! */
while (rc > 0) {
rc = read(query_data->resolver->fd_out, &addrlen, sizeof(addrlen));
if (rc > 0 && addrlen > 0 && addrlen < MAX_ADDR_RESPONSE_LEN) {
addr = g_malloc(addrlen);
rc = read(query_data->resolver->fd_out, addr, addrlen);
hosts = g_slist_append(hosts, GINT_TO_POINTER(addrlen));
hosts = g_slist_append(hosts, addr);
} else {
break;
}
}
/* wait4(resolver->dns_pid, NULL, WNOHANG, NULL); */
purple_dnsquery_resolved(query_data, hosts);
} else if (rc == -1) {
g_snprintf(message, sizeof(message), _("Error reading from resolver process:\n%s"), g_strerror(errno));
purple_dnsquery_failed(query_data, message);
} else if (rc == 0) {
g_snprintf(message, sizeof(message), _("Resolver process exited without answering our request"));
purple_dnsquery_failed(query_data, message);
}
handle_next_queued_request();
}
static gpointer dns_thread(gpointer d) {
ResolverData *data = (ResolverData *) d;
PurpleDnsQueryData *query_data;
// #ifdef HAVE_GETADDRINFO
int rc;
struct addrinfo hints, *res, *tmp;
char servname[20];
// #else
// struct sockaddr_in sin;
// struct hostent *hp;
// #endif
char *hostname;
query_data = data->query_data;
// Currently we don't support IDN
// #ifdef USE_IDN
// if (!dns_str_is_ascii(purple_dnsquery_get_host(query_data))) {
// rc = purple_network_convert_idn_to_ascii(purple_dnsquery_get_host(query_data), &hostname);
// if (rc != 0) {
// data->error_message = g_strdup_printf(_("Error converting %s "
// "to punycode: %d"), purple_dnsquery_get_host(query_data), rc);
// /* back to main thread */
// purple_timeout_add(0, dns_main_thread_cb, query_data);
// return 0;
// }
// } else /* intentional fallthru */
// #endif
hostname = g_strdup(purple_dnsquery_get_host(query_data));
// #ifdef HAVE_GETADDRINFO
g_snprintf(servname, sizeof(servname), "%d", purple_dnsquery_get_port(query_data));
memset(&hints,0,sizeof(hints));
/*
* This is only used to convert a service
* name to a port number. As we know we are
* passing a number already, we know this
* value will not be really used by the C
* library.
*/
hints.ai_socktype = SOCK_STREAM;
// #ifdef AI_ADDRCONFIG
// hints.ai_flags |= AI_ADDRCONFIG;
// #endif /* AI_ADDRCONFIG */
if ((rc = getaddrinfo(hostname, servname, &hints, &res)) == 0) {
tmp = res;
while(res) {
data->hosts = g_slist_append(data->hosts,
GSIZE_TO_POINTER(res->ai_addrlen));
data->hosts = g_slist_append(data->hosts,
g_memdup(res->ai_addr, res->ai_addrlen));
res = res->ai_next;
}
freeaddrinfo(tmp);
} else {
g_mutex_lock(data->mutex);
bool destroyed = data->destroyed;
g_mutex_unlock(data->mutex);
if (!destroyed) {
data->error_message = g_strdup_printf("Error resolving %s:\n%s", purple_dnsquery_get_host(query_data), purple_gai_strerror(rc));
}
}
// #else
// if ((hp = gethostbyname(hostname))) {
// memset(&sin, 0, sizeof(struct sockaddr_in));
// memcpy(&sin.sin_addr.s_addr, hp->h_addr, hp->h_length);
// sin.sin_family = hp->h_addrtype;
// sin.sin_port = htons(purple_dnsquery_get_port(query_data));
//
// data->hosts = g_slist_append(data->hosts,
// GSIZE_TO_POINTER(sizeof(sin)));
// data->hosts = g_slist_append(data->hosts,
// g_memdup(&sin, sizeof(sin)));
// } else {
// data->error_message = g_strdup_printf("Error resolving %s: %d", purple_dnsquery_get_host(query_data), h_errno);
// }
// #endif
g_free(hostname);
/* back to main thread */
purple_timeout_add(0, dns_main_thread_cb, data);
return 0;
}
static gpointer
dns_thread(gpointer data)
{
PurpleDnsQueryData *query_data;
#ifdef HAVE_GETADDRINFO
int rc;
struct addrinfo hints, *res, *tmp;
char servname[20];
#else
struct sockaddr_in sin;
struct hostent *hp;
#endif
char *hostname;
query_data = data;
#ifdef USE_IDN
if (!dns_str_is_ascii(query_data->hostname)) {
rc = purple_network_convert_idn_to_ascii(query_data->hostname, &hostname);
if (rc != 0) {
query_data->error_message = g_strdup_printf(_("Error converting %s "
"to punycode: %d"), query_data->hostname, rc);
/* back to main thread */
purple_timeout_add(0, dns_main_thread_cb, query_data);
return 0;
}
} else /* intentional fallthru */
#endif
hostname = g_strdup(query_data->hostname);
#ifdef HAVE_GETADDRINFO
g_snprintf(servname, sizeof(servname), "%d", query_data->port);
memset(&hints,0,sizeof(hints));
/*
* This is only used to convert a service
* name to a port number. As we know we are
* passing a number already, we know this
* value will not be really used by the C
* library.
*/
hints.ai_socktype = SOCK_STREAM;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif /* AI_ADDRCONFIG */
if ((rc = getaddrinfo(hostname, servname, &hints, &res)) == 0) {
tmp = res;
while(res) {
query_data->hosts = g_slist_append(query_data->hosts,
GSIZE_TO_POINTER(res->ai_addrlen));
query_data->hosts = g_slist_append(query_data->hosts,
g_memdup(res->ai_addr, res->ai_addrlen));
res = res->ai_next;
}
freeaddrinfo(tmp);
} else {
query_data->error_message = g_strdup_printf(_("Error resolving %s:\n%s"), query_data->hostname, purple_gai_strerror(rc));
}
#else
if ((hp = gethostbyname(hostname))) {
memset(&sin, 0, sizeof(struct sockaddr_in));
memcpy(&sin.sin_addr.s_addr, hp->h_addr, hp->h_length);
sin.sin_family = hp->h_addrtype;
sin.sin_port = htons(query_data->port);
query_data->hosts = g_slist_append(query_data->hosts,
GSIZE_TO_POINTER(sizeof(sin)));
query_data->hosts = g_slist_append(query_data->hosts,
g_memdup(&sin, sizeof(sin)));
} else {
query_data->error_message = g_strdup_printf(_("Error resolving %s: %d"), query_data->hostname, h_errno);
}
#endif
g_free(hostname);
/* back to main thread */
purple_timeout_add(0, dns_main_thread_cb, query_data);
return 0;
}
