git.meshlink.io Git - catta/blob - avahi-glib/ga-service-browser.c

   1 /*
   2  * ga-service-browser.c - Source for GaServiceBrowser
   3  * Copyright (C) 2005 Collabora Ltd.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include <avahi-client/client.h>
  28 #include <avahi-client/lookup.h>
  29 #include <avahi-common/error.h>
  30
  31 #include "ga-service-browser.h"
  32 #include "signals-marshal.h"
  33 #include "ga-errors.h"
  34 #include "ga-enums-enumtypes.h"
  35
  36 G_DEFINE_TYPE(GaServiceBrowser, ga_service_browser, G_TYPE_OBJECT)
  37
  38 /* signal enum */
  39 enum {
  40     NEW,
  41     REMOVED,
  42     CACHE_EXHAUSTED,
  43     ALL_FOR_NOW,
  44     FAILURE,
  45     LAST_SIGNAL
  46 };
  47
  48 static guint signals[LAST_SIGNAL] = { 0 };
  49
  50 /* properties */
  51 enum {
  52     PROP_PROTOCOL = 1,
  53     PROP_IFINDEX,
  54     PROP_TYPE,
  55     PROP_DOMAIN,
  56     PROP_FLAGS
  57 };
  58
  59 /* private structure */
  60 typedef struct _GaServiceBrowserPrivate GaServiceBrowserPrivate;
  61
  62 struct _GaServiceBrowserPrivate {
  63     GaClient *client;
  64     AvahiServiceBrowser *browser;
  65     AvahiIfIndex interface;
  66     AvahiProtocol protocol;
  67     char *type;
  68     char *domain;
  69     AvahiLookupFlags flags;
  70     gboolean dispose_has_run;
  71 };
  72
  73 #define GA_SERVICE_BROWSER_GET_PRIVATE(o)     (G_TYPE_INSTANCE_GET_PRIVATE ((o), GA_TYPE_SERVICE_BROWSER, GaServiceBrowserPrivate))
  74
  75 static void ga_service_browser_init(GaServiceBrowser * obj) {
  76     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(obj);
  77
  78     /* allocate any data required by the object here */
  79     priv->client = NULL;
  80     priv->browser = NULL;
  81     priv->type = NULL;
  82     priv->domain = NULL;
  83
  84 }
  85
  86 static void ga_service_browser_dispose(GObject * object);
  87 static void ga_service_browser_finalize(GObject * object);
  88
  89 static void ga_service_browser_set_property(GObject * object,
  90                                 guint property_id,
  91                                 const GValue * value, GParamSpec * pspec) {
  92     GaServiceBrowser *browser = GA_SERVICE_BROWSER(object);
  93     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(browser);
  94
  95     g_assert(priv->browser == NULL);
  96     switch (property_id) {
  97         case PROP_PROTOCOL:
  98             priv->protocol = g_value_get_enum(value);
  99             break;
 100         case PROP_IFINDEX:
 101             priv->interface = g_value_get_int(value);
 102             break;
 103         case PROP_TYPE:
 104             priv->type = g_strdup(g_value_get_string(value));
 105             break;
 106         case PROP_DOMAIN:
 107             priv->domain = g_strdup(g_value_get_string(value));
 108             break;
 109         case PROP_FLAGS:
 110             priv->flags = g_value_get_enum(value);
 111             break;
 112         default:
 113             G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
 114             break;
 115     }
 116 }
 117
 118 static void ga_service_browser_get_property(GObject * object,
 119                                 guint property_id,
 120                                 GValue * value, GParamSpec * pspec) {
 121     GaServiceBrowser *browser = GA_SERVICE_BROWSER(object);
 122     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(browser);
 123
 124     switch (property_id) {
 125         case PROP_PROTOCOL:
 126             g_value_set_int(value, priv->protocol);
 127             break;
 128         case PROP_IFINDEX:
 129             g_value_set_int(value, priv->interface);
 130             break;
 131         case PROP_TYPE:
 132             g_value_set_string(value, priv->type);
 133             break;
 134         case PROP_DOMAIN:
 135             g_value_set_string(value, priv->domain);
 136             break;
 137         case PROP_FLAGS:
 138             g_value_set_enum(value, priv->flags);
 139             break;
 140         default:
 141             G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
 142             break;
 143     }
 144 }
 145
 146
 147 static void ga_service_browser_class_init(GaServiceBrowserClass *
 148                               ga_service_browser_class) {
 149     GObjectClass *object_class = G_OBJECT_CLASS(ga_service_browser_class);
 150     GParamSpec *param_spec;
 151
 152     g_type_class_add_private(ga_service_browser_class,
 153                              sizeof (GaServiceBrowserPrivate));
 154
 155     object_class->dispose = ga_service_browser_dispose;
 156     object_class->finalize = ga_service_browser_finalize;
 157
 158     object_class->set_property = ga_service_browser_set_property;
 159     object_class->get_property = ga_service_browser_get_property;
 160
 161     signals[NEW] =
 162             g_signal_new("new-service",
 163                          G_OBJECT_CLASS_TYPE(ga_service_browser_class),
 164                          G_SIGNAL_RUN_LAST,
 165                          0,
 166                          NULL, NULL,
 167                          ga_signals_marshal_VOID__INT_ENUM_STRING_STRING_STRING_UINT,
 168                          G_TYPE_NONE, 6,
 169                          G_TYPE_INT,
 170                          GA_TYPE_PROTOCOL,
 171                          G_TYPE_STRING,
 172                          G_TYPE_STRING,
 173                          G_TYPE_STRING, GA_TYPE_LOOKUP_RESULT_FLAGS);
 174
 175     signals[REMOVED] =
 176             g_signal_new("removed-service",
 177                          G_OBJECT_CLASS_TYPE(ga_service_browser_class),
 178                          G_SIGNAL_RUN_LAST,
 179                          0,
 180                          NULL, NULL,
 181                          ga_signals_marshal_VOID__INT_ENUM_STRING_STRING_STRING_UINT,
 182                          G_TYPE_NONE, 6,
 183                          G_TYPE_INT,
 184                          GA_TYPE_PROTOCOL,
 185                          G_TYPE_STRING,
 186                          G_TYPE_STRING,
 187                          G_TYPE_STRING, GA_TYPE_LOOKUP_RESULT_FLAGS);
 188
 189     signals[ALL_FOR_NOW] =
 190             g_signal_new("all-for-now",
 191                          G_OBJECT_CLASS_TYPE(ga_service_browser_class),
 192                          G_SIGNAL_RUN_LAST,
 193                          0,
 194                          NULL, NULL,
 195                          g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 196
 197     signals[CACHE_EXHAUSTED] =
 198             g_signal_new("cache-exhausted",
 199                          G_OBJECT_CLASS_TYPE(ga_service_browser_class),
 200                          G_SIGNAL_RUN_LAST,
 201                          0,
 202                          NULL, NULL,
 203                          g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 204
 205     signals[FAILURE] =
 206             g_signal_new("failure",
 207                          G_OBJECT_CLASS_TYPE(ga_service_browser_class),
 208                          G_SIGNAL_RUN_LAST,
 209                          0,
 210                          NULL, NULL,
 211                          g_cclosure_marshal_VOID__POINTER,
 212                          G_TYPE_NONE, 1, G_TYPE_POINTER);
 213
 214     param_spec = g_param_spec_enum("protocol", "Avahi protocol to browse",
 215                                    "Avahi protocol to browse",
 216                                    GA_TYPE_PROTOCOL,
 217                                    GA_PROTOCOL_UNSPEC,
 218                                    G_PARAM_READWRITE |
 219                                    G_PARAM_STATIC_NAME |
 220                                    G_PARAM_STATIC_BLURB);
 221     g_object_class_install_property(object_class, PROP_PROTOCOL, param_spec);
 222
 223     param_spec = g_param_spec_int("interface", "interface index",
 224                                   "Interface use for browser",
 225                                   AVAHI_IF_UNSPEC,
 226                                   G_MAXINT,
 227                                   AVAHI_IF_UNSPEC,
 228                                   G_PARAM_READWRITE |
 229                                   G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB);
 230     g_object_class_install_property(object_class, PROP_IFINDEX, param_spec);
 231
 232     param_spec = g_param_spec_string("type", "service type",
 233                                      "Service type to browse for",
 234                                      NULL,
 235                                      G_PARAM_READWRITE |
 236                                      G_PARAM_STATIC_NAME |
 237                                      G_PARAM_STATIC_BLURB);
 238     g_object_class_install_property(object_class, PROP_TYPE, param_spec);
 239
 240     param_spec = g_param_spec_string("domain", "service domain",
 241                                      "Domain to browse in",
 242                                      NULL,
 243                                      G_PARAM_READWRITE |
 244                                      G_PARAM_STATIC_NAME |
 245                                      G_PARAM_STATIC_BLURB);
 246     g_object_class_install_property(object_class, PROP_DOMAIN, param_spec);
 247
 248     param_spec = g_param_spec_enum("flags", "Lookup flags for the browser",
 249                                    "Browser lookup flags",
 250                                    GA_TYPE_PROTOCOL,
 251                                    GA_LOOKUP_NO_FLAGS,
 252                                    G_PARAM_READWRITE |
 253                                    G_PARAM_STATIC_NAME |
 254                                    G_PARAM_STATIC_BLURB);
 255     g_object_class_install_property(object_class, PROP_FLAGS, param_spec);
 256 }
 257
 258 void ga_service_browser_dispose(GObject * object) {
 259     GaServiceBrowser *self = GA_SERVICE_BROWSER(object);
 260     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(self);
 261
 262     if (priv->dispose_has_run)
 263         return;
 264
 265     priv->dispose_has_run = TRUE;
 266
 267     if (priv->browser)
 268         avahi_service_browser_free(priv->browser);
 269     priv->browser = NULL;
 270     if (priv->client)
 271         g_object_unref(priv->client);
 272     priv->client = NULL;
 273
 274     /* release any references held by the object here */
 275
 276     if (G_OBJECT_CLASS(ga_service_browser_parent_class)->dispose)
 277         G_OBJECT_CLASS(ga_service_browser_parent_class)->dispose(object);
 278 }
 279
 280 void ga_service_browser_finalize(GObject * object) {
 281     GaServiceBrowser *self = GA_SERVICE_BROWSER(object);
 282     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(self);
 283
 284     /* free any data held directly by the object here */
 285     g_free(priv->type);
 286     priv->type = NULL;
 287     g_free(priv->domain);
 288     priv->domain = NULL;
 289
 290     G_OBJECT_CLASS(ga_service_browser_parent_class)->finalize(object);
 291 }
 292
 293 static void _avahi_service_browser_cb(AvahiServiceBrowser * b, AvahiIfIndex interface,
 294                           AvahiProtocol protocol, AvahiBrowserEvent event,
 295                           const char *name, const char *type,
 296                           const char *domain, AvahiLookupResultFlags flags,
 297                           void *userdata) {
 298     GaServiceBrowser *self = GA_SERVICE_BROWSER(userdata);
 299     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(self);
 300     if (priv->browser == NULL) {
 301         priv->browser = b;
 302     }
 303     g_assert(priv->browser == b);
 304
 305     switch (event) {
 306         case AVAHI_BROWSER_NEW:
 307         case AVAHI_BROWSER_REMOVE:{
 308                 guint signalid;
 309                 signalid = (event == AVAHI_BROWSER_NEW ? NEW : REMOVED);
 310                 g_signal_emit(self, signals[signalid], 0,
 311                               interface, protocol, name, type, domain, flags);
 312                 break;
 313             }
 314         case AVAHI_BROWSER_CACHE_EXHAUSTED:
 315             g_signal_emit(self, signals[CACHE_EXHAUSTED], 0);
 316             break;
 317         case AVAHI_BROWSER_ALL_FOR_NOW:
 318             g_signal_emit(self, signals[ALL_FOR_NOW], 0);
 319             break;
 320         case AVAHI_BROWSER_FAILURE:{
 321                 GError *error;
 322                 int aerrno = avahi_client_errno(priv->client->avahi_client);
 323                 error = g_error_new(GA_ERRORS, aerrno,
 324                                     "Browsing failed: %s",
 325                                     avahi_strerror(aerrno));
 326                 g_signal_emit(self, signals[FAILURE], 0, error);
 327                 g_error_free(error);
 328                 break;
 329             }
 330     }
 331 }
 332
 333 GaServiceBrowser *ga_service_browser_new(gchar * type) {
 334     return ga_service_browser_new_full(AVAHI_IF_UNSPEC,
 335                                        AVAHI_PROTO_UNSPEC, type, NULL, 0);
 336 }
 337
 338 GaServiceBrowser *ga_service_browser_new_full(AvahiIfIndex interface,
 339                                               AvahiProtocol protocol,
 340                                               gchar * type, gchar * domain,
 341                                               GaLookupFlags flags) {
 342     return g_object_new(GA_TYPE_SERVICE_BROWSER,
 343                         "interface", interface,
 344                         "protocol", protocol,
 345                         "type", type, "domain", domain, "flags", flags, NULL);
 346 }
 347
 348 gboolean ga_service_browser_attach(GaServiceBrowser * browser,
 349                           GaClient * client, GError ** error) {
 350     GaServiceBrowserPrivate *priv = GA_SERVICE_BROWSER_GET_PRIVATE(browser);
 351
 352     g_object_ref(client);
 353     priv->client = client;
 354
 355     priv->browser = avahi_service_browser_new(client->avahi_client,
 356                                               priv->interface,
 357                                               priv->protocol,
 358                                               priv->type, priv->domain,
 359                                               priv->flags,
 360                                               _avahi_service_browser_cb,
 361                                               browser);
 362     if (priv->browser == NULL) {
 363         if (error != NULL) {
 364             int aerrno = avahi_client_errno(client->avahi_client);
 365             *error = g_error_new(GA_ERRORS, aerrno,
 366                                  "Attaching group failed: %s",
 367                                  avahi_strerror(aerrno));
 368         }
 369         return FALSE;
 370     }
 371     return TRUE;
 372 }