Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU network listener |
| 3 | * |
| 4 | * Copyright (c) 2016-2017 Red Hat, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | #include "io/net-listener.h" |
| 23 | #include "io/dns-resolver.h" |
| 24 | #include "qapi/error.h" |
Markus Armbruster | 0b8fa32 | 2019-05-23 16:35:07 +0200 | [diff] [blame] | 25 | #include "qemu/module.h" |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 26 | |
| 27 | QIONetListener *qio_net_listener_new(void) |
| 28 | { |
Laurent Vivier | 4a4ff4c | 2018-03-23 15:32:02 +0100 | [diff] [blame] | 29 | return QIO_NET_LISTENER(object_new(TYPE_QIO_NET_LISTENER)); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 30 | } |
| 31 | |
| 32 | void qio_net_listener_set_name(QIONetListener *listener, |
| 33 | const char *name) |
| 34 | { |
| 35 | g_free(listener->name); |
| 36 | listener->name = g_strdup(name); |
| 37 | } |
| 38 | |
| 39 | |
| 40 | static gboolean qio_net_listener_channel_func(QIOChannel *ioc, |
| 41 | GIOCondition condition, |
| 42 | gpointer opaque) |
| 43 | { |
| 44 | QIONetListener *listener = QIO_NET_LISTENER(opaque); |
| 45 | QIOChannelSocket *sioc; |
| 46 | |
| 47 | sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc), |
| 48 | NULL); |
| 49 | if (!sioc) { |
| 50 | return TRUE; |
| 51 | } |
| 52 | |
| 53 | if (listener->io_func) { |
| 54 | listener->io_func(listener, sioc, listener->io_data); |
| 55 | } |
| 56 | |
| 57 | object_unref(OBJECT(sioc)); |
| 58 | |
| 59 | return TRUE; |
| 60 | } |
| 61 | |
| 62 | |
| 63 | int qio_net_listener_open_sync(QIONetListener *listener, |
| 64 | SocketAddress *addr, |
Juan Quintela | fc8135c | 2019-08-19 18:08:21 +0200 | [diff] [blame] | 65 | int num, |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 66 | Error **errp) |
| 67 | { |
| 68 | QIODNSResolver *resolver = qio_dns_resolver_get_instance(); |
| 69 | SocketAddress **resaddrs; |
| 70 | size_t nresaddrs; |
| 71 | size_t i; |
| 72 | Error *err = NULL; |
| 73 | bool success = false; |
| 74 | |
| 75 | if (qio_dns_resolver_lookup_sync(resolver, |
| 76 | addr, |
| 77 | &nresaddrs, |
| 78 | &resaddrs, |
| 79 | errp) < 0) { |
| 80 | return -1; |
| 81 | } |
| 82 | |
| 83 | for (i = 0; i < nresaddrs; i++) { |
| 84 | QIOChannelSocket *sioc = qio_channel_socket_new(); |
| 85 | |
Juan Quintela | fc8135c | 2019-08-19 18:08:21 +0200 | [diff] [blame] | 86 | if (qio_channel_socket_listen_sync(sioc, resaddrs[i], num, |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 87 | err ? NULL : &err) == 0) { |
| 88 | success = true; |
| 89 | |
| 90 | qio_net_listener_add(listener, sioc); |
| 91 | } |
| 92 | |
| 93 | qapi_free_SocketAddress(resaddrs[i]); |
| 94 | object_unref(OBJECT(sioc)); |
| 95 | } |
| 96 | g_free(resaddrs); |
| 97 | |
| 98 | if (success) { |
| 99 | error_free(err); |
| 100 | return 0; |
| 101 | } else { |
| 102 | error_propagate(errp, err); |
| 103 | return -1; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | |
| 108 | void qio_net_listener_add(QIONetListener *listener, |
| 109 | QIOChannelSocket *sioc) |
| 110 | { |
| 111 | if (listener->name) { |
| 112 | char *name = g_strdup_printf("%s-listen", listener->name); |
| 113 | qio_channel_set_name(QIO_CHANNEL(sioc), name); |
| 114 | g_free(name); |
| 115 | } |
| 116 | |
| 117 | listener->sioc = g_renew(QIOChannelSocket *, listener->sioc, |
| 118 | listener->nsioc + 1); |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 119 | listener->io_source = g_renew(typeof(listener->io_source[0]), |
| 120 | listener->io_source, |
| 121 | listener->nsioc + 1); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 122 | listener->sioc[listener->nsioc] = sioc; |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 123 | listener->io_source[listener->nsioc] = NULL; |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 124 | |
| 125 | object_ref(OBJECT(sioc)); |
| 126 | listener->connected = true; |
| 127 | |
| 128 | if (listener->io_func != NULL) { |
| 129 | object_ref(OBJECT(listener)); |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 130 | listener->io_source[listener->nsioc] = qio_channel_add_watch_source( |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 131 | QIO_CHANNEL(listener->sioc[listener->nsioc]), G_IO_IN, |
| 132 | qio_net_listener_channel_func, |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 133 | listener, (GDestroyNotify)object_unref, NULL); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | listener->nsioc++; |
| 137 | } |
| 138 | |
| 139 | |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 140 | void qio_net_listener_set_client_func_full(QIONetListener *listener, |
| 141 | QIONetListenerClientFunc func, |
| 142 | gpointer data, |
| 143 | GDestroyNotify notify, |
| 144 | GMainContext *context) |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 145 | { |
| 146 | size_t i; |
| 147 | |
| 148 | if (listener->io_notify) { |
| 149 | listener->io_notify(listener->io_data); |
| 150 | } |
| 151 | listener->io_func = func; |
| 152 | listener->io_data = data; |
| 153 | listener->io_notify = notify; |
| 154 | |
| 155 | for (i = 0; i < listener->nsioc; i++) { |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 156 | if (listener->io_source[i]) { |
| 157 | g_source_destroy(listener->io_source[i]); |
| 158 | g_source_unref(listener->io_source[i]); |
| 159 | listener->io_source[i] = NULL; |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 160 | } |
| 161 | } |
| 162 | |
| 163 | if (listener->io_func != NULL) { |
| 164 | for (i = 0; i < listener->nsioc; i++) { |
| 165 | object_ref(OBJECT(listener)); |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 166 | listener->io_source[i] = qio_channel_add_watch_source( |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 167 | QIO_CHANNEL(listener->sioc[i]), G_IO_IN, |
| 168 | qio_net_listener_channel_func, |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 169 | listener, (GDestroyNotify)object_unref, context); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | } |
| 173 | |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 174 | void qio_net_listener_set_client_func(QIONetListener *listener, |
| 175 | QIONetListenerClientFunc func, |
| 176 | gpointer data, |
| 177 | GDestroyNotify notify) |
| 178 | { |
| 179 | qio_net_listener_set_client_func_full(listener, func, data, |
| 180 | notify, NULL); |
| 181 | } |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 182 | |
| 183 | struct QIONetListenerClientWaitData { |
| 184 | QIOChannelSocket *sioc; |
| 185 | GMainLoop *loop; |
| 186 | }; |
| 187 | |
| 188 | |
| 189 | static gboolean qio_net_listener_wait_client_func(QIOChannel *ioc, |
| 190 | GIOCondition condition, |
| 191 | gpointer opaque) |
| 192 | { |
| 193 | struct QIONetListenerClientWaitData *data = opaque; |
| 194 | QIOChannelSocket *sioc; |
| 195 | |
| 196 | sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc), |
| 197 | NULL); |
| 198 | if (!sioc) { |
| 199 | return TRUE; |
| 200 | } |
| 201 | |
| 202 | if (data->sioc) { |
| 203 | object_unref(OBJECT(sioc)); |
| 204 | } else { |
| 205 | data->sioc = sioc; |
| 206 | g_main_loop_quit(data->loop); |
| 207 | } |
| 208 | |
| 209 | return TRUE; |
| 210 | } |
| 211 | |
| 212 | QIOChannelSocket *qio_net_listener_wait_client(QIONetListener *listener) |
| 213 | { |
| 214 | GMainContext *ctxt = g_main_context_new(); |
| 215 | GMainLoop *loop = g_main_loop_new(ctxt, TRUE); |
| 216 | GSource **sources; |
| 217 | struct QIONetListenerClientWaitData data = { |
| 218 | .sioc = NULL, |
| 219 | .loop = loop |
| 220 | }; |
| 221 | size_t i; |
| 222 | |
| 223 | for (i = 0; i < listener->nsioc; i++) { |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 224 | if (listener->io_source[i]) { |
| 225 | g_source_destroy(listener->io_source[i]); |
| 226 | g_source_unref(listener->io_source[i]); |
| 227 | listener->io_source[i] = NULL; |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 228 | } |
| 229 | } |
| 230 | |
| 231 | sources = g_new0(GSource *, listener->nsioc); |
| 232 | for (i = 0; i < listener->nsioc; i++) { |
| 233 | sources[i] = qio_channel_create_watch(QIO_CHANNEL(listener->sioc[i]), |
| 234 | G_IO_IN); |
| 235 | |
| 236 | g_source_set_callback(sources[i], |
| 237 | (GSourceFunc)qio_net_listener_wait_client_func, |
| 238 | &data, |
| 239 | NULL); |
| 240 | g_source_attach(sources[i], ctxt); |
| 241 | } |
| 242 | |
| 243 | g_main_loop_run(loop); |
| 244 | |
| 245 | for (i = 0; i < listener->nsioc; i++) { |
| 246 | g_source_unref(sources[i]); |
| 247 | } |
Paolo Bonzini | 28bb0a5 | 2017-12-18 09:53:08 +0100 | [diff] [blame] | 248 | g_free(sources); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 249 | g_main_loop_unref(loop); |
| 250 | g_main_context_unref(ctxt); |
| 251 | |
| 252 | if (listener->io_func != NULL) { |
| 253 | for (i = 0; i < listener->nsioc; i++) { |
| 254 | object_ref(OBJECT(listener)); |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 255 | listener->io_source[i] = qio_channel_add_watch_source( |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 256 | QIO_CHANNEL(listener->sioc[i]), G_IO_IN, |
| 257 | qio_net_listener_channel_func, |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 258 | listener, (GDestroyNotify)object_unref, NULL); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 259 | } |
| 260 | } |
| 261 | |
| 262 | return data.sioc; |
| 263 | } |
| 264 | |
| 265 | void qio_net_listener_disconnect(QIONetListener *listener) |
| 266 | { |
| 267 | size_t i; |
| 268 | |
| 269 | if (!listener->connected) { |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | for (i = 0; i < listener->nsioc; i++) { |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 274 | if (listener->io_source[i]) { |
| 275 | g_source_destroy(listener->io_source[i]); |
| 276 | g_source_unref(listener->io_source[i]); |
| 277 | listener->io_source[i] = NULL; |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 278 | } |
| 279 | qio_channel_close(QIO_CHANNEL(listener->sioc[i]), NULL); |
| 280 | } |
| 281 | listener->connected = false; |
| 282 | } |
| 283 | |
| 284 | |
| 285 | bool qio_net_listener_is_connected(QIONetListener *listener) |
| 286 | { |
| 287 | return listener->connected; |
| 288 | } |
| 289 | |
| 290 | static void qio_net_listener_finalize(Object *obj) |
| 291 | { |
| 292 | QIONetListener *listener = QIO_NET_LISTENER(obj); |
| 293 | size_t i; |
| 294 | |
| 295 | qio_net_listener_disconnect(listener); |
| 296 | |
| 297 | for (i = 0; i < listener->nsioc; i++) { |
| 298 | object_unref(OBJECT(listener->sioc[i])); |
| 299 | } |
Peter Xu | 938c8b7 | 2018-03-05 14:43:21 +0800 | [diff] [blame] | 300 | g_free(listener->io_source); |
Daniel P. Berrange | 5304739 | 2016-07-19 13:37:51 +0100 | [diff] [blame] | 301 | g_free(listener->sioc); |
| 302 | g_free(listener->name); |
| 303 | } |
| 304 | |
| 305 | static const TypeInfo qio_net_listener_info = { |
| 306 | .parent = TYPE_OBJECT, |
| 307 | .name = TYPE_QIO_NET_LISTENER, |
| 308 | .instance_size = sizeof(QIONetListener), |
| 309 | .instance_finalize = qio_net_listener_finalize, |
| 310 | .class_size = sizeof(QIONetListenerClass), |
| 311 | }; |
| 312 | |
| 313 | |
| 314 | static void qio_net_listener_register_types(void) |
| 315 | { |
| 316 | type_register_static(&qio_net_listener_info); |
| 317 | } |
| 318 | |
| 319 | |
| 320 | type_init(qio_net_listener_register_types); |