323 lines
9.1 KiB
C
323 lines
9.1 KiB
C
/*
|
|
* QEMU network listener
|
|
*
|
|
* Copyright (c) 2016-2017 Red Hat, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "io/net-listener.h"
|
|
#include "io/dns-resolver.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/module.h"
|
|
|
|
QIONetListener *qio_net_listener_new(void)
|
|
{
|
|
return QIO_NET_LISTENER(object_new(TYPE_QIO_NET_LISTENER));
|
|
}
|
|
|
|
void qio_net_listener_set_name(QIONetListener *listener,
|
|
const char *name)
|
|
{
|
|
g_free(listener->name);
|
|
listener->name = g_strdup(name);
|
|
}
|
|
|
|
|
|
static gboolean qio_net_listener_channel_func(QIOChannel *ioc,
|
|
GIOCondition condition,
|
|
gpointer opaque)
|
|
{
|
|
QIONetListener *listener = QIO_NET_LISTENER(opaque);
|
|
QIOChannelSocket *sioc;
|
|
|
|
sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc),
|
|
NULL);
|
|
if (!sioc) {
|
|
return TRUE;
|
|
}
|
|
|
|
if (listener->io_func) {
|
|
listener->io_func(listener, sioc, listener->io_data);
|
|
}
|
|
|
|
object_unref(OBJECT(sioc));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
int qio_net_listener_open_sync(QIONetListener *listener,
|
|
SocketAddress *addr,
|
|
int num,
|
|
Error **errp)
|
|
{
|
|
QIODNSResolver *resolver = qio_dns_resolver_get_instance();
|
|
SocketAddress **resaddrs;
|
|
size_t nresaddrs;
|
|
size_t i;
|
|
Error *err = NULL;
|
|
bool success = false;
|
|
|
|
if (qio_dns_resolver_lookup_sync(resolver,
|
|
addr,
|
|
&nresaddrs,
|
|
&resaddrs,
|
|
errp) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < nresaddrs; i++) {
|
|
QIOChannelSocket *sioc = qio_channel_socket_new();
|
|
|
|
if (qio_channel_socket_listen_sync(sioc, resaddrs[i], num,
|
|
err ? NULL : &err) == 0) {
|
|
success = true;
|
|
|
|
qio_net_listener_add(listener, sioc);
|
|
}
|
|
|
|
qapi_free_SocketAddress(resaddrs[i]);
|
|
object_unref(OBJECT(sioc));
|
|
}
|
|
g_free(resaddrs);
|
|
|
|
if (success) {
|
|
error_free(err);
|
|
return 0;
|
|
} else {
|
|
error_propagate(errp, err);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
|
|
void qio_net_listener_add(QIONetListener *listener,
|
|
QIOChannelSocket *sioc)
|
|
{
|
|
if (listener->name) {
|
|
char *name = g_strdup_printf("%s-listen", listener->name);
|
|
qio_channel_set_name(QIO_CHANNEL(sioc), name);
|
|
g_free(name);
|
|
}
|
|
|
|
listener->sioc = g_renew(QIOChannelSocket *, listener->sioc,
|
|
listener->nsioc + 1);
|
|
listener->io_source = g_renew(typeof(listener->io_source[0]),
|
|
listener->io_source,
|
|
listener->nsioc + 1);
|
|
listener->sioc[listener->nsioc] = sioc;
|
|
listener->io_source[listener->nsioc] = NULL;
|
|
|
|
object_ref(OBJECT(sioc));
|
|
listener->connected = true;
|
|
|
|
if (listener->io_func != NULL) {
|
|
object_ref(OBJECT(listener));
|
|
listener->io_source[listener->nsioc] = qio_channel_add_watch_source(
|
|
QIO_CHANNEL(listener->sioc[listener->nsioc]), G_IO_IN,
|
|
qio_net_listener_channel_func,
|
|
listener, (GDestroyNotify)object_unref, NULL);
|
|
}
|
|
|
|
listener->nsioc++;
|
|
}
|
|
|
|
|
|
void qio_net_listener_set_client_func_full(QIONetListener *listener,
|
|
QIONetListenerClientFunc func,
|
|
gpointer data,
|
|
GDestroyNotify notify,
|
|
GMainContext *context)
|
|
{
|
|
size_t i;
|
|
|
|
if (listener->io_notify) {
|
|
listener->io_notify(listener->io_data);
|
|
}
|
|
listener->io_func = func;
|
|
listener->io_data = data;
|
|
listener->io_notify = notify;
|
|
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
if (listener->io_source[i]) {
|
|
g_source_destroy(listener->io_source[i]);
|
|
g_source_unref(listener->io_source[i]);
|
|
listener->io_source[i] = NULL;
|
|
}
|
|
}
|
|
|
|
if (listener->io_func != NULL) {
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
object_ref(OBJECT(listener));
|
|
listener->io_source[i] = qio_channel_add_watch_source(
|
|
QIO_CHANNEL(listener->sioc[i]), G_IO_IN,
|
|
qio_net_listener_channel_func,
|
|
listener, (GDestroyNotify)object_unref, context);
|
|
}
|
|
}
|
|
}
|
|
|
|
void qio_net_listener_set_client_func(QIONetListener *listener,
|
|
QIONetListenerClientFunc func,
|
|
gpointer data,
|
|
GDestroyNotify notify)
|
|
{
|
|
qio_net_listener_set_client_func_full(listener, func, data,
|
|
notify, NULL);
|
|
}
|
|
|
|
struct QIONetListenerClientWaitData {
|
|
QIOChannelSocket *sioc;
|
|
GMainLoop *loop;
|
|
};
|
|
|
|
|
|
static gboolean qio_net_listener_wait_client_func(QIOChannel *ioc,
|
|
GIOCondition condition,
|
|
gpointer opaque)
|
|
{
|
|
struct QIONetListenerClientWaitData *data = opaque;
|
|
QIOChannelSocket *sioc;
|
|
|
|
sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc),
|
|
NULL);
|
|
if (!sioc) {
|
|
return TRUE;
|
|
}
|
|
|
|
if (data->sioc) {
|
|
object_unref(OBJECT(sioc));
|
|
} else {
|
|
data->sioc = sioc;
|
|
g_main_loop_quit(data->loop);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
QIOChannelSocket *qio_net_listener_wait_client(QIONetListener *listener)
|
|
{
|
|
GMainContext *ctxt = g_main_context_new();
|
|
GMainLoop *loop = g_main_loop_new(ctxt, TRUE);
|
|
GSource **sources;
|
|
struct QIONetListenerClientWaitData data = {
|
|
.sioc = NULL,
|
|
.loop = loop
|
|
};
|
|
size_t i;
|
|
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
if (listener->io_source[i]) {
|
|
g_source_destroy(listener->io_source[i]);
|
|
g_source_unref(listener->io_source[i]);
|
|
listener->io_source[i] = NULL;
|
|
}
|
|
}
|
|
|
|
sources = g_new0(GSource *, listener->nsioc);
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
sources[i] = qio_channel_create_watch(QIO_CHANNEL(listener->sioc[i]),
|
|
G_IO_IN);
|
|
|
|
g_source_set_callback(sources[i],
|
|
(GSourceFunc)qio_net_listener_wait_client_func,
|
|
&data,
|
|
NULL);
|
|
g_source_attach(sources[i], ctxt);
|
|
}
|
|
|
|
g_main_loop_run(loop);
|
|
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
g_source_unref(sources[i]);
|
|
}
|
|
g_free(sources);
|
|
g_main_loop_unref(loop);
|
|
g_main_context_unref(ctxt);
|
|
|
|
if (listener->io_func != NULL) {
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
object_ref(OBJECT(listener));
|
|
listener->io_source[i] = qio_channel_add_watch_source(
|
|
QIO_CHANNEL(listener->sioc[i]), G_IO_IN,
|
|
qio_net_listener_channel_func,
|
|
listener, (GDestroyNotify)object_unref, NULL);
|
|
}
|
|
}
|
|
|
|
return data.sioc;
|
|
}
|
|
|
|
void qio_net_listener_disconnect(QIONetListener *listener)
|
|
{
|
|
size_t i;
|
|
|
|
if (!listener->connected) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
if (listener->io_source[i]) {
|
|
g_source_destroy(listener->io_source[i]);
|
|
g_source_unref(listener->io_source[i]);
|
|
listener->io_source[i] = NULL;
|
|
}
|
|
qio_channel_close(QIO_CHANNEL(listener->sioc[i]), NULL);
|
|
}
|
|
listener->connected = false;
|
|
}
|
|
|
|
|
|
bool qio_net_listener_is_connected(QIONetListener *listener)
|
|
{
|
|
return listener->connected;
|
|
}
|
|
|
|
static void qio_net_listener_finalize(Object *obj)
|
|
{
|
|
QIONetListener *listener = QIO_NET_LISTENER(obj);
|
|
size_t i;
|
|
|
|
if (listener->io_notify) {
|
|
listener->io_notify(listener->io_data);
|
|
}
|
|
qio_net_listener_disconnect(listener);
|
|
|
|
for (i = 0; i < listener->nsioc; i++) {
|
|
object_unref(OBJECT(listener->sioc[i]));
|
|
}
|
|
g_free(listener->io_source);
|
|
g_free(listener->sioc);
|
|
g_free(listener->name);
|
|
}
|
|
|
|
static const TypeInfo qio_net_listener_info = {
|
|
.parent = TYPE_OBJECT,
|
|
.name = TYPE_QIO_NET_LISTENER,
|
|
.instance_size = sizeof(QIONetListener),
|
|
.instance_finalize = qio_net_listener_finalize,
|
|
};
|
|
|
|
|
|
static void qio_net_listener_register_types(void)
|
|
{
|
|
type_register_static(&qio_net_listener_info);
|
|
}
|
|
|
|
|
|
type_init(qio_net_listener_register_types);
|