git.meshlink.io Git - catta/blob - avahi-daemon/dbus-protocol.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of avahi.
   5
   6   avahi is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   avahi is distributed in the hope that it will be useful, but WITHOUT
  12   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13   or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
  14   Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with avahi; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <glib.h>
  27 #include <string.h>
  28
  29 #define DBUS_API_SUBJECT_TO_CHANGE
  30 #include <dbus/dbus.h>
  31 #include <dbus/dbus-glib-lowlevel.h>
  32
  33 #include <avahi-core/llist.h>
  34 #include <avahi-core/log.h>
  35 #include <avahi-core/core.h>
  36
  37 #include "dbus-protocol.h"
  38 #include "main.h"
  39
  40 #define AVAHI_DBUS_NAME "org.freedesktop.Avahi"
  41 #define AVAHI_DBUS_INTERFACE_SERVER AVAHI_DBUS_NAME".Server"
  42 #define AVAHI_DBUS_PATH_SERVER "/org/freedesktop/Avahi/Server"
  43 #define AVAHI_DBUS_INTERFACE_ENTRY_GROUP AVAHI_DBUS_NAME".EntryGroup"
  44
  45 /* Needs wrapping:
  46    - AvahiServiceResolver
  47    - AvahiDomainBrowser
  48    - AvahiServiceTypeBrowser
  49    - AvahiServiceBrowser */
  50
  51 typedef struct Server Server;
  52 typedef struct Client Client;
  53 typedef struct EntryGroupInfo EntryGroupInfo;
  54 typedef struct HostNameResolverInfo HostNameResolverInfo;
  55 typedef struct AddressResolverInfo AddressResolverInfo;
  56
  57 struct EntryGroupInfo {
  58     guint id;
  59     Client *client;
  60     AvahiEntryGroup *entry_group;
  61     gchar *path;
  62
  63     AVAHI_LLIST_FIELDS(EntryGroupInfo, entry_groups);
  64 };
  65
  66 struct HostNameResolverInfo {
  67     Client *client;
  68     AvahiHostNameResolver *host_name_resolver;
  69     DBusMessage *message;
  70
  71     AVAHI_LLIST_FIELDS(HostNameResolverInfo, host_name_resolvers);
  72 };
  73
  74 struct AddressResolverInfo {
  75     Client *client;
  76     AvahiAddressResolver *address_resolver;
  77     DBusMessage *message;
  78
  79     AVAHI_LLIST_FIELDS(AddressResolverInfo, address_resolvers);
  80 };
  81
  82 struct Client {
  83     guint id;
  84     gchar *name;
  85     guint current_id;
  86
  87     AVAHI_LLIST_FIELDS(Client, clients);
  88     AVAHI_LLIST_HEAD(EntryGroupInfo, entry_groups);
  89     AVAHI_LLIST_HEAD(HostNameResolverInfo, host_name_resolvers);
  90     AVAHI_LLIST_HEAD(AddressResolverInfo, address_resolvers);
  91 };
  92
  93 struct Server {
  94     DBusConnection *bus;
  95     AVAHI_LLIST_HEAD(Client, clients);
  96     guint current_id;
  97 };
  98
  99 static Server *server = NULL;
 100
 101 static void entry_group_free(EntryGroupInfo *i) {
 102     g_assert(i);
 103
 104     avahi_entry_group_free(i->entry_group);
 105     dbus_connection_unregister_object_path(server->bus, i->path);
 106     g_free(i->path);
 107     AVAHI_LLIST_REMOVE(EntryGroupInfo, entry_groups, i->client->entry_groups, i);
 108     g_free(i);
 109  }
 110
 111 static void host_name_resolver_free(HostNameResolverInfo *i) {
 112     g_assert(i);
 113
 114     avahi_host_name_resolver_free(i->host_name_resolver);
 115     dbus_message_unref(i->message);
 116     AVAHI_LLIST_REMOVE(HostNameResolverInfo, host_name_resolvers, i->client->host_name_resolvers, i);
 117     g_free(i);
 118 }
 119
 120 static void address_resolver_free(AddressResolverInfo *i) {
 121     g_assert(i);
 122
 123     avahi_address_resolver_free(i->address_resolver);
 124     dbus_message_unref(i->message);
 125     AVAHI_LLIST_REMOVE(AddressResolverInfo, address_resolvers, i->client->address_resolvers, i);
 126     g_free(i);
 127 }
 128
 129 static void client_free(Client *c) {
 130
 131     g_assert(server);
 132     g_assert(c);
 133
 134     while (c->entry_groups)
 135         entry_group_free(c->entry_groups);
 136
 137     while (c->host_name_resolvers)
 138         host_name_resolver_free(c->host_name_resolvers);
 139
 140     while (c->address_resolvers)
 141         address_resolver_free(c->address_resolvers);
 142
 143     g_free(c->name);
 144     AVAHI_LLIST_REMOVE(Client, clients, server->clients, c);
 145     g_free(c);
 146 }
 147
 148 static Client *client_get(const gchar *name, gboolean create) {
 149     Client *client;
 150
 151     g_assert(server);
 152     g_assert(name);
 153
 154     for (client = server->clients; client; client = client->clients_next)
 155         if (!strcmp(name, client->name))
 156             return client;
 157
 158     if (!create)
 159         return NULL;
 160
 161     /* If not existant yet, create a new entry */
 162     client = g_new(Client, 1);
 163     client->id = server->current_id++;
 164     client->name = g_strdup(name);
 165     client->current_id = 0;
 166     AVAHI_LLIST_HEAD_INIT(EntryGroupInfo, client->entry_groups);
 167     AVAHI_LLIST_HEAD_INIT(HostNameResolverInfo, client->host_name_resolvers);
 168     AVAHI_LLIST_HEAD_INIT(AddressResolverInfo, client->address_resolvers);
 169
 170     AVAHI_LLIST_PREPEND(Client, clients, server->clients, client);
 171     return client;
 172 }
 173
 174 static DBusHandlerResult msg_signal_filter_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 175     GMainLoop *loop = userdata;
 176     DBusError error;
 177
 178     dbus_error_init(&error);
 179
 180 /*     avahi_log_debug("dbus: interface=%s, path=%s, member=%s", */
 181 /*                     dbus_message_get_interface(m), */
 182 /*                     dbus_message_get_path(m), */
 183 /*                     dbus_message_get_member(m)); */
 184
 185     if (dbus_message_is_signal(m, DBUS_INTERFACE_LOCAL, "Disconnected")) {
 186         /* No, we shouldn't quit, but until we get somewhere
 187          * usefull such that we can restore our state, we will */
 188         avahi_log_warn("Disconnnected from d-bus, terminating...");
 189         g_main_loop_quit (loop);
 190         return DBUS_HANDLER_RESULT_HANDLED;
 191
 192     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameAcquired")) {
 193         gchar *name;
 194
 195         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
 196             avahi_log_warn("Error parsing NameAcquired message");
 197             goto fail;
 198         }
 199
 200         avahi_log_info("dbus: name acquired (%s)", name);
 201         return DBUS_HANDLER_RESULT_HANDLED;
 202     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
 203         gchar *name, *old, *new;
 204
 205         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
 206             avahi_log_warn("Error parsing NameOwnerChanged message");
 207             goto fail;
 208         }
 209
 210         if (!*new) {
 211             Client *client;
 212
 213             if ((client = client_get(name, FALSE))) {
 214                 avahi_log_info("dbus: client %s vanished", name);
 215                 client_free(client);
 216             }
 217         }
 218     }
 219
 220 fail:
 221     if (dbus_error_is_set(&error))
 222         dbus_error_free(&error);
 223
 224     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 225 }
 226
 227 static DBusHandlerResult respond_error(DBusConnection *c, DBusMessage *m, const gchar *error, const gchar *text) {
 228     DBusMessage *reply;
 229
 230     reply = dbus_message_new_error(m, error, text);
 231     dbus_connection_send(c, reply, NULL);
 232     dbus_message_unref(reply);
 233
 234     return DBUS_HANDLER_RESULT_HANDLED;
 235 }
 236
 237 static void entry_group_callback(AvahiServer *s, AvahiEntryGroup *g, AvahiEntryGroupState state, gpointer userdata) {
 238     EntryGroupInfo *i = userdata;
 239     DBusMessage *m;
 240     gint32 t;
 241
 242     g_assert(s);
 243     g_assert(g);
 244     g_assert(i);
 245
 246     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged");
 247     t = (gint32) state;
 248     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
 249     dbus_message_set_destination(m, i->client->name);
 250     dbus_connection_send(server->bus, m, NULL);
 251     dbus_message_unref(m);
 252 }
 253
 254 static DBusHandlerResult respond_ok(DBusConnection *c, DBusMessage *m) {
 255     DBusMessage *reply;
 256
 257     reply = dbus_message_new_method_return(m);
 258     dbus_connection_send(c, reply, NULL);
 259     dbus_message_unref(reply);
 260
 261     return DBUS_HANDLER_RESULT_HANDLED;
 262 }
 263
 264 static DBusHandlerResult msg_entry_group_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 265     DBusError error;
 266     EntryGroupInfo *i = userdata;
 267
 268     g_assert(c);
 269     g_assert(m);
 270     g_assert(i);
 271
 272     dbus_error_init(&error);
 273
 274     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 275                     dbus_message_get_interface(m),
 276                     dbus_message_get_path(m),
 277                     dbus_message_get_member(m));
 278
 279     /* Access control */
 280     if (strcmp(dbus_message_get_sender(m), i->client->name))
 281         return respond_error(c, m, DBUS_ERROR_ACCESS_DENIED, NULL);
 282
 283     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Free")) {
 284
 285         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 286             avahi_log_warn("Error parsing EntryGroup::Free message");
 287             goto fail;
 288         }
 289
 290         entry_group_free(i);
 291         return respond_ok(c, m);
 292     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Commit")) {
 293
 294         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 295             avahi_log_warn("Error parsing EntryGroup::Commit message");
 296             goto fail;
 297         }
 298
 299         avahi_entry_group_commit(i->entry_group);
 300         return respond_ok(c, m);
 301     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "GetState")) {
 302         DBusMessage *reply;
 303         gint32 t;
 304
 305         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 306             avahi_log_warn("Error parsing EntryGroup::GetState message");
 307             goto fail;
 308         }
 309
 310         t = (gint32) avahi_entry_group_get_state(i->entry_group);
 311         reply = dbus_message_new_method_return(m);
 312         dbus_message_append_args(reply, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
 313         dbus_connection_send(c, reply, NULL);
 314         dbus_message_unref(reply);
 315
 316         return DBUS_HANDLER_RESULT_HANDLED;
 317     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddService")) {
 318         gint32 interface, protocol;
 319         gchar *type, *name, *domain, *host;
 320         guint16 port;
 321         gchar **txt = NULL;
 322         gint txt_len;
 323         AvahiStringList *strlst;
 324
 325         if (!dbus_message_get_args(
 326                 m, &error,
 327                 DBUS_TYPE_INT32, &interface,
 328                 DBUS_TYPE_INT32, &protocol,
 329                 DBUS_TYPE_STRING, &name,
 330                 DBUS_TYPE_STRING, &type,
 331                 DBUS_TYPE_STRING, &domain,
 332                 DBUS_TYPE_STRING, &host,
 333                 DBUS_TYPE_UINT16, &port,
 334                 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, &txt, &txt_len,
 335                 DBUS_TYPE_INVALID) || !type || !*type || !name || !*name || !port) {
 336             avahi_log_warn("Error parsing EntryGroup::AddService message");
 337             goto fail;
 338         }
 339
 340         strlst = avahi_string_list_new_from_array((const gchar**) txt, txt_len);
 341         dbus_free_string_array(txt);
 342
 343         if (domain && !*domain)
 344             domain = NULL;
 345
 346         if (host && !*host)
 347             host = NULL;
 348
 349         if (avahi_server_add_service_strlst(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, host, port, strlst) < 0) {
 350             avahi_log_warn("Failed to add service: %s", name);
 351             return respond_error(c, m, "org.freedesktop.Avahi.InvalidServiceError", NULL);
 352         } else
 353             avahi_log_info("Successfully added service: %s", name);
 354
 355         return respond_ok(c, m);
 356     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddAddress")) {
 357         gint32 interface, protocol;
 358         gchar *name, *address;
 359         AvahiAddress a;
 360
 361         if (!dbus_message_get_args(
 362                 m, &error,
 363                 DBUS_TYPE_INT32, &interface,
 364                 DBUS_TYPE_INT32, &protocol,
 365                 DBUS_TYPE_STRING, &name,
 366                 DBUS_TYPE_STRING, &address,
 367                 DBUS_TYPE_INVALID) || !name || !*name || !address || !*address) {
 368             avahi_log_warn("Error parsing EntryGroup::AddAddress message");
 369             goto fail;
 370         }
 371
 372         if (!(avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))) {
 373             avahi_log_warn("Error parsing address data");
 374             return respond_error(c, m, "org.freedesktop.Avahi.InvalidAddressError", NULL);
 375         }
 376
 377         if (avahi_server_add_address(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, 0, name, &a) < 0) {
 378             avahi_log_warn("Failed to add service: %s", name);
 379             return respond_error(c, m, "org.freedesktop.Avahi.InvalidAddressError", NULL);
 380         } else
 381             avahi_log_info("Successfully added address: %s -> %s", name, address);
 382
 383         return respond_ok(c, m);
 384     }
 385
 386     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 387
 388 fail:
 389     if (dbus_error_is_set(&error))
 390         dbus_error_free(&error);
 391
 392     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 393 }
 394
 395 static void host_name_resolver_callback(AvahiHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const gchar *host_name, const AvahiAddress *a, gpointer userdata) {
 396     HostNameResolverInfo *i = userdata;
 397     DBusMessage *reply;
 398
 399     g_assert(r);
 400     g_assert(host_name);
 401     g_assert(i);
 402
 403     if (event == AVAHI_RESOLVER_FOUND) {
 404         char t[256], *pt = t;
 405         gint32 i_interface, i_protocol, i_aprotocol;
 406
 407         g_assert(a);
 408         avahi_address_snprint(t, sizeof(t), a);
 409
 410         i_interface = (gint32) interface;
 411         i_protocol = (gint32) protocol;
 412         i_aprotocol = (gint32) a->family;
 413
 414         reply = dbus_message_new_method_return(i->message);
 415         dbus_message_append_args(
 416             reply,
 417             DBUS_TYPE_INT32, &i_interface,
 418             DBUS_TYPE_INT32, &i_protocol,
 419             DBUS_TYPE_STRING, &host_name,
 420             DBUS_TYPE_INT32, &i_aprotocol,
 421             DBUS_TYPE_STRING, &pt,
 422             DBUS_TYPE_INVALID);
 423
 424     } else {
 425         g_assert(event == AVAHI_RESOLVER_TIMEOUT);
 426         reply = dbus_message_new_error(i->message, "org.freedesktop.Avahi.TimeoutError", NULL);
 427     }
 428
 429     dbus_connection_send(server->bus, reply, NULL);
 430     dbus_message_unref(reply);
 431
 432     host_name_resolver_free(i);
 433 }
 434
 435 static void address_resolver_callback(AvahiAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const AvahiAddress *address, const gchar *host_name, gpointer userdata) {
 436     AddressResolverInfo *i = userdata;
 437     DBusMessage *reply;
 438
 439     g_assert(r);
 440     g_assert(address);
 441     g_assert(i);
 442
 443     if (event == AVAHI_RESOLVER_FOUND) {
 444         char t[256], *pt = t;
 445         gint32 i_interface, i_protocol, i_aprotocol;
 446
 447         g_assert(host_name);
 448         avahi_address_snprint(t, sizeof(t), address);
 449
 450         i_interface = (gint32) interface;
 451         i_protocol = (gint32) protocol;
 452         i_aprotocol = (gint32) address->family;
 453
 454         reply = dbus_message_new_method_return(i->message);
 455         dbus_message_append_args(
 456             reply,
 457             DBUS_TYPE_INT32, &i_interface,
 458             DBUS_TYPE_INT32, &i_protocol,
 459             DBUS_TYPE_INT32, &i_aprotocol,
 460             DBUS_TYPE_STRING, &pt,
 461             DBUS_TYPE_STRING, &host_name,
 462             DBUS_TYPE_INVALID);
 463
 464     } else {
 465         g_assert(event == AVAHI_RESOLVER_TIMEOUT);
 466         reply = dbus_message_new_error(i->message, "org.freedesktop.Avahi.TimeoutError", NULL);
 467     }
 468
 469     dbus_connection_send(server->bus, reply, NULL);
 470     dbus_message_unref(reply);
 471
 472     address_resolver_free(i);
 473 }
 474
 475 static DBusHandlerResult respond_string(DBusConnection *c, DBusMessage *m, const gchar *text) {
 476     DBusMessage *reply;
 477
 478     reply = dbus_message_new_method_return(m);
 479     dbus_message_append_args(reply, DBUS_TYPE_STRING, &text, DBUS_TYPE_INVALID);
 480     dbus_connection_send(c, reply, NULL);
 481     dbus_message_unref(reply);
 482
 483     return DBUS_HANDLER_RESULT_HANDLED;
 484 }
 485
 486 static DBusHandlerResult msg_server_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 487     DBusError error;
 488
 489     dbus_error_init(&error);
 490
 491     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 492                     dbus_message_get_interface(m),
 493                     dbus_message_get_path(m),
 494                     dbus_message_get_member(m));
 495
 496     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostName")) {
 497
 498         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 499             avahi_log_warn("Error parsing Server::GetHostName message");
 500             goto fail;
 501         }
 502
 503         return respond_string(c, m, avahi_server_get_host_name(avahi_server));
 504
 505     } if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetDomainName")) {
 506
 507         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 508             avahi_log_warn("Error parsing Server::GetDomainName message");
 509             goto fail;
 510         }
 511
 512         return respond_string(c, m, avahi_server_get_domain_name(avahi_server));
 513
 514     } if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostNameFqdn")) {
 515
 516         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
 517             avahi_log_warn("Error parsing Server::GetHostNameFqdn message");
 518             goto fail;
 519         }
 520
 521         return respond_string(c, m, avahi_server_get_host_name_fqdn(avahi_server));
 522
 523     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "EntryGroupNew")) {
 524         Client *client;
 525         EntryGroupInfo *i;
 526         static const DBusObjectPathVTable vtable = {
 527             NULL,
 528             msg_entry_group_impl,
 529             NULL,
 530             NULL,
 531             NULL,
 532             NULL
 533         };
 534         DBusMessage *reply;
 535
 536         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 537             avahi_log_warn("Error parsing Server::EntryGroupNew message");
 538             goto fail;
 539         }
 540
 541         client = client_get(dbus_message_get_sender(m), TRUE);
 542
 543         i = g_new(EntryGroupInfo, 1);
 544         i->id = ++client->current_id;
 545         i->client = client;
 546         i->entry_group = avahi_entry_group_new(avahi_server, entry_group_callback, i);
 547         i->path = g_strdup_printf("/org/freedesktop/Avahi/Client%u/EntryGroup%u", client->id, i->id);
 548
 549         AVAHI_LLIST_PREPEND(EntryGroupInfo, entry_groups, client->entry_groups, i);
 550
 551         dbus_connection_register_object_path(c, i->path, &vtable, i);
 552         reply = dbus_message_new_method_return(m);
 553         dbus_message_append_args(reply, DBUS_TYPE_OBJECT_PATH, &i->path, DBUS_TYPE_INVALID);
 554         dbus_connection_send(c, reply, NULL);
 555         dbus_message_unref(reply);
 556
 557         return DBUS_HANDLER_RESULT_HANDLED;
 558
 559     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveHostName")) {
 560         Client *client;
 561         gint32 interface, protocol, aprotocol;
 562         gchar *name;
 563         HostNameResolverInfo *i;
 564
 565         if (!dbus_message_get_args(
 566                 m, &error,
 567                 DBUS_TYPE_INT32, &interface,
 568                 DBUS_TYPE_INT32, &protocol,
 569                 DBUS_TYPE_STRING, &name,
 570                 DBUS_TYPE_INT32, &aprotocol,
 571                 DBUS_TYPE_INVALID) || !name || !*name) {
 572             avahi_log_warn("Error parsing EntryGroup::ResolveHostName message");
 573             goto fail;
 574         }
 575
 576         client = client_get(dbus_message_get_sender(m), TRUE);
 577
 578         i = g_new(HostNameResolverInfo, 1);
 579         i->client = client;
 580         i->message = dbus_message_ref(m);
 581         i->host_name_resolver = avahi_host_name_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, (AvahiProtocol) aprotocol, host_name_resolver_callback, i);
 582
 583         AVAHI_LLIST_PREPEND(HostNameResolverInfo, host_name_resolvers, client->host_name_resolvers, i);
 584
 585         return DBUS_HANDLER_RESULT_HANDLED;
 586
 587     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveAddress")) {
 588         Client *client;
 589         gint32 interface, protocol;
 590         gchar *address;
 591         AddressResolverInfo *i;
 592         AvahiAddress a;
 593
 594         if (!dbus_message_get_args(
 595                 m, &error,
 596                 DBUS_TYPE_INT32, &interface,
 597                 DBUS_TYPE_INT32, &protocol,
 598                 DBUS_TYPE_STRING, &address,
 599                 DBUS_TYPE_INVALID) || !address || !*address) {
 600             avahi_log_warn("Error parsing EntryGroup::ResolveAddress message");
 601             goto fail;
 602         }
 603
 604         if (!avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a)) {
 605             avahi_log_warn("Error parsing address data");
 606             return respond_error(c, m, "org.freedesktop.Avahi.InvalidAddressError", NULL);
 607         }
 608
 609         client = client_get(dbus_message_get_sender(m), TRUE);
 610
 611         i = g_new(AddressResolverInfo, 1);
 612         i->client = client;
 613         i->message = dbus_message_ref(m);
 614         i->address_resolver = avahi_address_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, &a, address_resolver_callback, i);
 615
 616         AVAHI_LLIST_PREPEND(AddressResolverInfo, address_resolvers, client->address_resolvers, i);
 617
 618         return DBUS_HANDLER_RESULT_HANDLED;
 619     }
 620
 621     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 622
 623
 624 fail:
 625     if (dbus_error_is_set(&error))
 626         dbus_error_free(&error);
 627
 628     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 629 }
 630
 631 void dbus_protocol_server_state_changed(AvahiServerState state) {
 632     DBusMessage *m;
 633     gint32 t;
 634
 635     if (!server)
 636         return;
 637
 638     m = dbus_message_new_signal(AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged");
 639     t = (gint32) state;
 640     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
 641     dbus_connection_send(server->bus, m, NULL);
 642     dbus_message_unref(m);
 643 }
 644
 645 int dbus_protocol_setup(GMainLoop *loop) {
 646     DBusError error;
 647
 648     static const DBusObjectPathVTable server_vtable = {
 649         NULL,
 650         msg_server_impl,
 651         NULL,
 652         NULL,
 653         NULL,
 654         NULL
 655     };
 656
 657     dbus_error_init(&error);
 658
 659     server = g_malloc(sizeof(Server));
 660     server->clients = NULL;
 661     server->current_id = 0;
 662
 663     server->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
 664     if (dbus_error_is_set(&error)) {
 665         avahi_log_warn("dbus_bus_get(): %s", error.message);
 666         goto fail;
 667     }
 668
 669     dbus_connection_setup_with_g_main(server->bus, NULL);
 670     dbus_connection_set_exit_on_disconnect(server->bus, FALSE);
 671
 672     dbus_bus_request_name(server->bus, AVAHI_DBUS_NAME, 0, &error);
 673     if (dbus_error_is_set(&error)) {
 674         avahi_log_warn("dbus_bus_request_name(): %s", error.message);
 675         goto fail;
 676     }
 677
 678     dbus_bus_add_match(server->bus, "type='signal',""interface='" DBUS_INTERFACE_DBUS  "'", &error);
 679
 680     dbus_connection_add_filter(server->bus, msg_signal_filter_impl, loop, NULL);
 681     dbus_connection_register_object_path(server->bus, AVAHI_DBUS_PATH_SERVER, &server_vtable, NULL);
 682
 683     return 0;
 684
 685 fail:
 686     if (server->bus) {
 687         dbus_connection_disconnect(server->bus);
 688         dbus_connection_unref(server->bus);
 689     }
 690
 691     dbus_error_free (&error);
 692     g_free(server);
 693     server = NULL;
 694     return -1;
 695 }
 696
 697 void dbus_protocol_shutdown(void) {
 698
 699     if (server) {
 700
 701         while (server->clients)
 702             client_free(server->clients);
 703
 704         if (server->bus) {
 705             dbus_connection_disconnect(server->bus);
 706             dbus_connection_unref(server->bus);
 707         }
 708
 709         g_free(server);
 710         server = NULL;
 711     }
 712 }