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 <string.h>
  27 #include <sys/ioctl.h>
  28 #include <net/if.h>
  29 #include <errno.h>
  30 #include <unistd.h>
  31 #include <glib.h>
  32
  33 #define DBUS_API_SUBJECT_TO_CHANGE
  34 #include <dbus/dbus.h>
  35 #include <dbus/dbus-glib-lowlevel.h>
  36
  37 #include <avahi-common/llist.h>
  38 #include <avahi-core/log.h>
  39 #include <avahi-core/core.h>
  40 #include <avahi-common/dbus.h>
  41
  42 #include "dbus-protocol.h"
  43 #include "main.h"
  44
  45 typedef struct Server Server;
  46 typedef struct Client Client;
  47 typedef struct EntryGroupInfo EntryGroupInfo;
  48 typedef struct HostNameResolverInfo HostNameResolverInfo;
  49 typedef struct AddressResolverInfo AddressResolverInfo;
  50 typedef struct DomainBrowserInfo DomainBrowserInfo;
  51 typedef struct ServiceTypeBrowserInfo ServiceTypeBrowserInfo;
  52 typedef struct ServiceBrowserInfo ServiceBrowserInfo;
  53 typedef struct ServiceResolverInfo ServiceResolverInfo;
  54
  55 #define MAX_CLIENTS 20
  56 #define MAX_OBJECTS_PER_CLIENT 50
  57 #define MAX_ENTRIES_PER_ENTRY_GROUP 20
  58
  59 /* #define VALGRIND_WORKAROUND */
  60
  61 struct EntryGroupInfo {
  62     guint id;
  63     Client *client;
  64     AvahiEntryGroup *entry_group;
  65     gchar *path;
  66
  67     gint n_entries;
  68
  69     AVAHI_LLIST_FIELDS(EntryGroupInfo, entry_groups);
  70 };
  71
  72 struct HostNameResolverInfo {
  73     Client *client;
  74     AvahiHostNameResolver *host_name_resolver;
  75     DBusMessage *message;
  76
  77     AVAHI_LLIST_FIELDS(HostNameResolverInfo, host_name_resolvers);
  78 };
  79
  80 struct AddressResolverInfo {
  81     Client *client;
  82     AvahiAddressResolver *address_resolver;
  83     DBusMessage *message;
  84
  85     AVAHI_LLIST_FIELDS(AddressResolverInfo, address_resolvers);
  86 };
  87
  88 struct DomainBrowserInfo {
  89     guint id;
  90     Client *client;
  91     AvahiDomainBrowser *domain_browser;
  92     gchar *path;
  93
  94     AVAHI_LLIST_FIELDS(DomainBrowserInfo, domain_browsers);
  95 };
  96
  97 struct ServiceTypeBrowserInfo {
  98     guint id;
  99     Client *client;
 100     AvahiServiceTypeBrowser *service_type_browser;
 101     gchar *path;
 102
 103     AVAHI_LLIST_FIELDS(ServiceTypeBrowserInfo, service_type_browsers);
 104 };
 105
 106 struct ServiceBrowserInfo {
 107     guint id;
 108     Client *client;
 109     AvahiServiceBrowser *service_browser;
 110     gchar *path;
 111
 112     AVAHI_LLIST_FIELDS(ServiceBrowserInfo, service_browsers);
 113 };
 114
 115 struct ServiceResolverInfo {
 116     Client *client;
 117     AvahiServiceResolver *service_resolver;
 118     DBusMessage *message;
 119
 120     AVAHI_LLIST_FIELDS(ServiceResolverInfo, service_resolvers);
 121 };
 122
 123 struct Client {
 124     guint id;
 125     gchar *name;
 126     guint current_id;
 127     gint n_objects;
 128
 129     AVAHI_LLIST_FIELDS(Client, clients);
 130     AVAHI_LLIST_HEAD(EntryGroupInfo, entry_groups);
 131     AVAHI_LLIST_HEAD(HostNameResolverInfo, host_name_resolvers);
 132     AVAHI_LLIST_HEAD(AddressResolverInfo, address_resolvers);
 133     AVAHI_LLIST_HEAD(DomainBrowserInfo, domain_browsers);
 134     AVAHI_LLIST_HEAD(ServiceTypeBrowserInfo, service_type_browsers);
 135     AVAHI_LLIST_HEAD(ServiceBrowserInfo, service_browsers);
 136     AVAHI_LLIST_HEAD(ServiceResolverInfo, service_resolvers);
 137 };
 138
 139 struct Server {
 140     DBusConnection *bus;
 141     AVAHI_LLIST_HEAD(Client, clients);
 142     gint n_clients;
 143     guint current_id;
 144 };
 145
 146 static Server *server = NULL;
 147
 148 static void entry_group_free(EntryGroupInfo *i) {
 149     g_assert(i);
 150
 151     if (i->entry_group)
 152         avahi_entry_group_free(i->entry_group);
 153     dbus_connection_unregister_object_path(server->bus, i->path);
 154     g_free(i->path);
 155     AVAHI_LLIST_REMOVE(EntryGroupInfo, entry_groups, i->client->entry_groups, i);
 156
 157     i->client->n_objects--;
 158     g_assert(i->client->n_objects >= 0);
 159
 160     g_free(i);
 161  }
 162
 163 static void host_name_resolver_free(HostNameResolverInfo *i) {
 164     g_assert(i);
 165
 166     if (i->host_name_resolver)
 167         avahi_host_name_resolver_free(i->host_name_resolver);
 168     dbus_message_unref(i->message);
 169     AVAHI_LLIST_REMOVE(HostNameResolverInfo, host_name_resolvers, i->client->host_name_resolvers, i);
 170
 171     i->client->n_objects--;
 172     g_assert(i->client->n_objects >= 0);
 173
 174     g_free(i);
 175 }
 176
 177 static void address_resolver_free(AddressResolverInfo *i) {
 178     g_assert(i);
 179
 180     if (i->address_resolver)
 181         avahi_address_resolver_free(i->address_resolver);
 182     dbus_message_unref(i->message);
 183     AVAHI_LLIST_REMOVE(AddressResolverInfo, address_resolvers, i->client->address_resolvers, i);
 184
 185     i->client->n_objects--;
 186     g_assert(i->client->n_objects >= 0);
 187
 188     g_free(i);
 189 }
 190
 191 static void domain_browser_free(DomainBrowserInfo *i) {
 192     g_assert(i);
 193
 194     if (i->domain_browser)
 195         avahi_domain_browser_free(i->domain_browser);
 196     dbus_connection_unregister_object_path(server->bus, i->path);
 197     g_free(i->path);
 198     AVAHI_LLIST_REMOVE(DomainBrowserInfo, domain_browsers, i->client->domain_browsers, i);
 199
 200     i->client->n_objects--;
 201     g_assert(i->client->n_objects >= 0);
 202
 203     g_free(i);
 204 }
 205
 206 static void service_type_browser_free(ServiceTypeBrowserInfo *i) {
 207     g_assert(i);
 208
 209     if (i->service_type_browser)
 210         avahi_service_type_browser_free(i->service_type_browser);
 211     dbus_connection_unregister_object_path(server->bus, i->path);
 212     g_free(i->path);
 213     AVAHI_LLIST_REMOVE(ServiceTypeBrowserInfo, service_type_browsers, i->client->service_type_browsers, i);
 214
 215     i->client->n_objects--;
 216     g_assert(i->client->n_objects >= 0);
 217
 218     g_free(i);
 219 }
 220
 221 static void service_browser_free(ServiceBrowserInfo *i) {
 222     g_assert(i);
 223
 224     if (i->service_browser)
 225         avahi_service_browser_free(i->service_browser);
 226     dbus_connection_unregister_object_path(server->bus, i->path);
 227     g_free(i->path);
 228     AVAHI_LLIST_REMOVE(ServiceBrowserInfo, service_browsers, i->client->service_browsers, i);
 229
 230     i->client->n_objects--;
 231     g_assert(i->client->n_objects >= 0);
 232
 233     g_free(i);
 234 }
 235
 236 static void service_resolver_free(ServiceResolverInfo *i) {
 237     g_assert(i);
 238
 239     if (i->service_resolver)
 240         avahi_service_resolver_free(i->service_resolver);
 241     dbus_message_unref(i->message);
 242     AVAHI_LLIST_REMOVE(ServiceResolverInfo, service_resolvers, i->client->service_resolvers, i);
 243
 244     i->client->n_objects--;
 245     g_assert(i->client->n_objects >= 0);
 246
 247     g_free(i);
 248 }
 249
 250 static void client_free(Client *c) {
 251
 252     g_assert(server);
 253     g_assert(c);
 254
 255     while (c->entry_groups)
 256         entry_group_free(c->entry_groups);
 257
 258     while (c->host_name_resolvers)
 259         host_name_resolver_free(c->host_name_resolvers);
 260
 261     while (c->address_resolvers)
 262         address_resolver_free(c->address_resolvers);
 263
 264     while (c->domain_browsers)
 265         domain_browser_free(c->domain_browsers);
 266
 267     while (c->service_type_browsers)
 268         service_type_browser_free(c->service_type_browsers);
 269
 270     while (c->service_browsers)
 271         service_browser_free(c->service_browsers);
 272
 273     while (c->service_resolvers)
 274         service_resolver_free(c->service_resolvers);
 275
 276     g_assert(c->n_objects == 0);
 277
 278     g_free(c->name);
 279     AVAHI_LLIST_REMOVE(Client, clients, server->clients, c);
 280     g_free(c);
 281
 282     server->n_clients --;
 283     g_assert(server->n_clients >= 0);
 284 }
 285
 286 static Client *client_get(const gchar *name, gboolean create) {
 287     Client *client;
 288
 289     g_assert(server);
 290     g_assert(name);
 291
 292     for (client = server->clients; client; client = client->clients_next)
 293         if (!strcmp(name, client->name))
 294             return client;
 295
 296     if (!create)
 297         return NULL;
 298
 299     if (server->n_clients >= MAX_CLIENTS)
 300         return NULL;
 301
 302     /* If not existant yet, create a new entry */
 303     client = g_new(Client, 1);
 304     client->id = server->current_id++;
 305     client->name = g_strdup(name);
 306     client->current_id = 0;
 307     client->n_objects = 0;
 308     AVAHI_LLIST_HEAD_INIT(EntryGroupInfo, client->entry_groups);
 309     AVAHI_LLIST_HEAD_INIT(HostNameResolverInfo, client->host_name_resolvers);
 310     AVAHI_LLIST_HEAD_INIT(AddressResolverInfo, client->address_resolvers);
 311     AVAHI_LLIST_HEAD_INIT(DomainBrowserInfo, client->domain_browsers);
 312     AVAHI_LLIST_HEAD_INIT(ServiceTypeBrowserInfo, client->service_type_browsers);
 313     AVAHI_LLIST_HEAD_INIT(ServiceBrowserInfo, client->service_browsers);
 314     AVAHI_LLIST_HEAD_INIT(ServiceResolverInfo, client->service_resolvers);
 315
 316     AVAHI_LLIST_PREPEND(Client, clients, server->clients, client);
 317
 318     server->n_clients++;
 319     g_assert(server->n_clients > 0);
 320
 321     return client;
 322 }
 323
 324 static DBusHandlerResult respond_error(DBusConnection *c, DBusMessage *m, gint error, const gchar *text) {
 325     DBusMessage *reply;
 326
 327     const gchar * const table[- AVAHI_ERR_MAX] = {
 328         NULL, /* OK */
 329         AVAHI_DBUS_ERR_FAILURE,
 330         AVAHI_DBUS_ERR_BAD_STATE,
 331         AVAHI_DBUS_ERR_INVALID_HOST_NAME,
 332         AVAHI_DBUS_ERR_INVALID_DOMAIN_NAME,
 333         AVAHI_DBUS_ERR_NO_NETWORK,
 334         AVAHI_DBUS_ERR_INVALID_TTL,
 335         AVAHI_DBUS_ERR_IS_PATTERN,
 336         AVAHI_DBUS_ERR_LOCAL_COLLISION,
 337         AVAHI_DBUS_ERR_INVALID_RECORD,
 338         AVAHI_DBUS_ERR_INVALID_SERVICE_NAME,
 339         AVAHI_DBUS_ERR_INVALID_SERVICE_TYPE,
 340         AVAHI_DBUS_ERR_INVALID_PORT,
 341         AVAHI_DBUS_ERR_INVALID_KEY,
 342         AVAHI_DBUS_ERR_INVALID_ADDRESS,
 343         AVAHI_DBUS_ERR_TIMEOUT,
 344         AVAHI_DBUS_ERR_TOO_MANY_CLIENTS,
 345         AVAHI_DBUS_ERR_TOO_MANY_OBJECTS,
 346         AVAHI_DBUS_ERR_TOO_MANY_ENTRIES,
 347         AVAHI_DBUS_ERR_OS,
 348         AVAHI_DBUS_ERR_ACCESS_DENIED,
 349         AVAHI_DBUS_ERR_INVALID_OPERATION
 350     };
 351
 352     g_assert(-error > -AVAHI_OK);
 353     g_assert(-error < -AVAHI_ERR_MAX);
 354
 355     reply = dbus_message_new_error(m, table[-error], text ? text : avahi_strerror(error));
 356     dbus_connection_send(c, reply, NULL);
 357     dbus_message_unref(reply);
 358
 359     return DBUS_HANDLER_RESULT_HANDLED;
 360 }
 361
 362 static DBusHandlerResult respond_string(DBusConnection *c, DBusMessage *m, const gchar *text) {
 363     DBusMessage *reply;
 364
 365     reply = dbus_message_new_method_return(m);
 366     dbus_message_append_args(reply, DBUS_TYPE_STRING, &text, DBUS_TYPE_INVALID);
 367     dbus_connection_send(c, reply, NULL);
 368     dbus_message_unref(reply);
 369
 370     return DBUS_HANDLER_RESULT_HANDLED;
 371 }
 372
 373 static DBusHandlerResult respond_int32(DBusConnection *c, DBusMessage *m, gint32 i) {
 374     DBusMessage *reply;
 375
 376     reply = dbus_message_new_method_return(m);
 377     dbus_message_append_args(reply, DBUS_TYPE_INT32, &i, DBUS_TYPE_INVALID);
 378     dbus_connection_send(c, reply, NULL);
 379     dbus_message_unref(reply);
 380
 381     return DBUS_HANDLER_RESULT_HANDLED;
 382 }
 383
 384 static DBusHandlerResult respond_ok(DBusConnection *c, DBusMessage *m) {
 385     DBusMessage *reply;
 386
 387     reply = dbus_message_new_method_return(m);
 388     dbus_connection_send(c, reply, NULL);
 389     dbus_message_unref(reply);
 390
 391     return DBUS_HANDLER_RESULT_HANDLED;
 392 }
 393
 394 static DBusHandlerResult respond_path(DBusConnection *c, DBusMessage *m, const gchar *path) {
 395     DBusMessage *reply;
 396
 397     reply = dbus_message_new_method_return(m);
 398     dbus_message_append_args(reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 399     dbus_connection_send(c, reply, NULL);
 400     dbus_message_unref(reply);
 401
 402     return DBUS_HANDLER_RESULT_HANDLED;
 403 }
 404
 405 static DBusHandlerResult handle_introspect(DBusConnection *c, DBusMessage *m, const gchar *fname) {
 406     gchar *path = NULL;
 407     gchar *contents;
 408     GError *gerror = NULL;
 409     DBusError error;
 410
 411     g_assert(c);
 412     g_assert(m);
 413     g_assert(fname);
 414
 415     dbus_error_init(&error);
 416
 417     if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 418         avahi_log_warn("Error parsing Introspect message: %s", error.message);
 419         goto fail;
 420     }
 421
 422     path = g_strdup_printf("%s/%s", AVAHI_DBUS_INTROSPECTION_DIR, fname);
 423
 424     if (!(g_file_get_contents(path, &contents, NULL, &gerror))) {
 425         avahi_log_warn("Failed to load introspection data: %s", gerror->message);
 426         g_error_free(gerror);
 427         g_free(path);
 428         goto fail;
 429     }
 430
 431     g_free(path);
 432
 433     respond_string(c, m, contents);
 434     g_free(contents);
 435
 436     return DBUS_HANDLER_RESULT_HANDLED;
 437
 438 fail:
 439     if (dbus_error_is_set(&error))
 440         dbus_error_free(&error);
 441
 442     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 443
 444 }
 445
 446 static DBusHandlerResult msg_signal_filter_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 447     GMainLoop *loop = userdata;
 448     DBusError error;
 449
 450     dbus_error_init(&error);
 451
 452 /*     avahi_log_debug("dbus: interface=%s, path=%s, member=%s", */
 453 /*                     dbus_message_get_interface(m), */
 454 /*                     dbus_message_get_path(m), */
 455 /*                     dbus_message_get_member(m)); */
 456
 457     if (dbus_message_is_signal(m, DBUS_INTERFACE_LOCAL, "Disconnected")) {
 458         /* No, we shouldn't quit, but until we get somewhere
 459          * usefull such that we can restore our state, we will */
 460         avahi_log_warn("Disconnnected from d-bus, terminating...");
 461         g_main_loop_quit (loop);
 462         return DBUS_HANDLER_RESULT_HANDLED;
 463
 464     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameAcquired")) {
 465         gchar *name;
 466
 467         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
 468             avahi_log_warn("Error parsing NameAcquired message");
 469             goto fail;
 470         }
 471
 472 /*         avahi_log_info("dbus: name acquired (%s)", name); */
 473         return DBUS_HANDLER_RESULT_HANDLED;
 474
 475     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
 476         gchar *name, *old, *new;
 477
 478         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
 479             avahi_log_warn("Error parsing NameOwnerChanged message");
 480             goto fail;
 481         }
 482
 483         if (!*new) {
 484             Client *client;
 485
 486             if ((client = client_get(name, FALSE))) {
 487 /*                 avahi_log_info("dbus: client %s vanished", name); */
 488                 client_free(client);
 489             }
 490         }
 491     }
 492
 493 fail:
 494     if (dbus_error_is_set(&error))
 495         dbus_error_free(&error);
 496
 497     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 498 }
 499
 500 static void entry_group_callback(AvahiServer *s, AvahiEntryGroup *g, AvahiEntryGroupState state, gpointer userdata) {
 501     EntryGroupInfo *i = userdata;
 502     DBusMessage *m;
 503     gint32 t;
 504
 505     g_assert(s);
 506     g_assert(g);
 507     g_assert(i);
 508
 509     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged");
 510     t = (gint32) state;
 511     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
 512     dbus_message_set_destination(m, i->client->name);
 513     dbus_connection_send(server->bus, m, NULL);
 514     dbus_message_unref(m);
 515 }
 516
 517 static DBusHandlerResult msg_entry_group_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 518     DBusError error;
 519     EntryGroupInfo *i = userdata;
 520
 521     g_assert(c);
 522     g_assert(m);
 523     g_assert(i);
 524
 525     dbus_error_init(&error);
 526
 527     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 528                     dbus_message_get_interface(m),
 529                     dbus_message_get_path(m),
 530                     dbus_message_get_member(m));
 531
 532     /* Introspection */
 533     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 534         return handle_introspect(c, m, "EntryGroup.introspect");
 535
 536     /* Access control */
 537     if (strcmp(dbus_message_get_sender(m), i->client->name))
 538         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 539
 540     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Free")) {
 541
 542         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 543             avahi_log_warn("Error parsing EntryGroup::Free message");
 544             goto fail;
 545         }
 546
 547         entry_group_free(i);
 548         return respond_ok(c, m);
 549
 550     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Commit")) {
 551
 552         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 553             avahi_log_warn("Error parsing EntryGroup::Commit message");
 554             goto fail;
 555         }
 556
 557         avahi_entry_group_commit(i->entry_group);
 558         return respond_ok(c, m);
 559
 560
 561     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Reset")) {
 562
 563         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 564             avahi_log_warn("Error parsing EntryGroup::Reset message");
 565             goto fail;
 566         }
 567
 568         avahi_entry_group_reset(i->entry_group);
 569         return respond_ok(c, m);
 570
 571     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "IsEmpty")) {
 572         DBusMessage *reply;
 573         gboolean b;
 574
 575         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 576             avahi_log_warn("Error parsing EntryGroup::IsEmpty message");
 577             goto fail;
 578         }
 579
 580         b = !!avahi_entry_group_is_empty(i->entry_group);
 581
 582         reply = dbus_message_new_method_return(m);
 583         dbus_message_append_args(reply, DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID);
 584         dbus_connection_send(c, reply, NULL);
 585         dbus_message_unref(reply);
 586
 587         return DBUS_HANDLER_RESULT_HANDLED;
 588
 589     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "GetState")) {
 590
 591         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 592             avahi_log_warn("Error parsing EntryGroup::GetState message");
 593             goto fail;
 594         }
 595
 596         return respond_int32(c, m, (gint32) avahi_entry_group_get_state(i->entry_group));
 597
 598     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddService")) {
 599         gint32 interface, protocol;
 600         gchar *type, *name, *domain, *host;
 601         guint16 port;
 602         AvahiStringList *strlst;
 603         DBusMessageIter iter, sub;
 604         int j;
 605
 606         if (!dbus_message_get_args(
 607                 m, &error,
 608                 DBUS_TYPE_INT32, &interface,
 609                 DBUS_TYPE_INT32, &protocol,
 610                 DBUS_TYPE_STRING, &name,
 611                 DBUS_TYPE_STRING, &type,
 612                 DBUS_TYPE_STRING, &domain,
 613                 DBUS_TYPE_STRING, &host,
 614                 DBUS_TYPE_UINT16, &port,
 615                 DBUS_TYPE_INVALID) || !type || !name) {
 616             avahi_log_warn("Error parsing EntryGroup::AddService message");
 617             goto fail;
 618         }
 619
 620         dbus_message_iter_init(m, &iter);
 621
 622         for (j = 0; j < 7; j++)
 623             dbus_message_iter_next(&iter);
 624
 625         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 626             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_ARRAY) {
 627             avahi_log_warn("Error parsing EntryGroup::AddService message 2");
 628             goto fail;
 629         }
 630
 631         strlst = NULL;
 632         dbus_message_iter_recurse(&iter, &sub);
 633
 634         for (;;) {
 635             DBusMessageIter sub2;
 636             int at, n;
 637             guint8 *k;
 638
 639             if ((at = dbus_message_iter_get_arg_type(&sub)) == DBUS_TYPE_INVALID)
 640                 break;
 641
 642             g_assert(at == DBUS_TYPE_ARRAY);
 643
 644             if (dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_BYTE) {
 645                 avahi_log_warn("Error parsing EntryGroup::AddService message");
 646                 goto fail;
 647             }
 648
 649             dbus_message_iter_recurse(&sub, &sub2);
 650             dbus_message_iter_get_fixed_array(&sub2, &k, &n);
 651             strlst = avahi_string_list_add_arbitrary(strlst, k, n);
 652
 653             dbus_message_iter_next(&sub);
 654         }
 655
 656         if (i->n_entries >= MAX_ENTRIES_PER_ENTRY_GROUP) {
 657             avahi_string_list_free(strlst);
 658             avahi_log_warn("Too many entries per entry group, client request failed.");
 659             return respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);
 660         }
 661
 662         if (domain && !*domain)
 663             domain = NULL;
 664
 665         if (host && !*host)
 666             host = NULL;
 667
 668         if (avahi_server_add_service_strlst(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, host, port, strlst) < 0) {
 669             avahi_string_list_free(strlst);
 670             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
 671         } else
 672             i->n_entries ++;
 673
 674         avahi_string_list_free(strlst);
 675
 676         return respond_ok(c, m);
 677
 678     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddAddress")) {
 679         gint32 interface, protocol;
 680         gchar *name, *address;
 681         AvahiAddress a;
 682
 683         if (!dbus_message_get_args(
 684                 m, &error,
 685                 DBUS_TYPE_INT32, &interface,
 686                 DBUS_TYPE_INT32, &protocol,
 687                 DBUS_TYPE_STRING, &name,
 688                 DBUS_TYPE_STRING, &address,
 689                 DBUS_TYPE_INVALID) || !name || !address) {
 690             avahi_log_warn("Error parsing EntryGroup::AddAddress message");
 691             goto fail;
 692         }
 693
 694         if (i->n_entries >= MAX_ENTRIES_PER_ENTRY_GROUP) {
 695             avahi_log_warn("Too many entries per entry group, client request failed.");
 696             return respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);
 697         }
 698
 699         if (!(avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))) {
 700             return respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);
 701         }
 702
 703         if (avahi_server_add_address(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, 0, name, &a) < 0)
 704             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
 705         else
 706             i->n_entries ++;
 707
 708         return respond_ok(c, m);
 709     }
 710
 711     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 712
 713 fail:
 714     if (dbus_error_is_set(&error))
 715         dbus_error_free(&error);
 716
 717     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 718 }
 719
 720 static void host_name_resolver_callback(AvahiHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const gchar *host_name, const AvahiAddress *a, gpointer userdata) {
 721     HostNameResolverInfo *i = userdata;
 722
 723     g_assert(r);
 724     g_assert(host_name);
 725     g_assert(i);
 726
 727     if (event == AVAHI_RESOLVER_FOUND) {
 728         char t[256], *pt = t;
 729         gint32 i_interface, i_protocol, i_aprotocol;
 730         DBusMessage *reply;
 731
 732         g_assert(a);
 733         avahi_address_snprint(t, sizeof(t), a);
 734
 735         i_interface = (gint32) interface;
 736         i_protocol = (gint32) protocol;
 737         i_aprotocol = (gint32) a->family;
 738
 739         reply = dbus_message_new_method_return(i->message);
 740         dbus_message_append_args(
 741             reply,
 742             DBUS_TYPE_INT32, &i_interface,
 743             DBUS_TYPE_INT32, &i_protocol,
 744             DBUS_TYPE_STRING, &host_name,
 745             DBUS_TYPE_INT32, &i_aprotocol,
 746             DBUS_TYPE_STRING, &pt,
 747             DBUS_TYPE_INVALID);
 748
 749         dbus_connection_send(server->bus, reply, NULL);
 750         dbus_message_unref(reply);
 751     } else {
 752         g_assert(event == AVAHI_RESOLVER_TIMEOUT);
 753
 754         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
 755     }
 756
 757     host_name_resolver_free(i);
 758 }
 759
 760 static void address_resolver_callback(AvahiAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const AvahiAddress *address, const gchar *host_name, gpointer userdata) {
 761     AddressResolverInfo *i = userdata;
 762
 763     g_assert(r);
 764     g_assert(address);
 765     g_assert(i);
 766
 767     if (event == AVAHI_RESOLVER_FOUND) {
 768         char t[256], *pt = t;
 769         gint32 i_interface, i_protocol, i_aprotocol;
 770         DBusMessage *reply;
 771
 772         g_assert(host_name);
 773         avahi_address_snprint(t, sizeof(t), address);
 774
 775         i_interface = (gint32) interface;
 776         i_protocol = (gint32) protocol;
 777         i_aprotocol = (gint32) address->family;
 778
 779         reply = dbus_message_new_method_return(i->message);
 780         dbus_message_append_args(
 781             reply,
 782             DBUS_TYPE_INT32, &i_interface,
 783             DBUS_TYPE_INT32, &i_protocol,
 784             DBUS_TYPE_INT32, &i_aprotocol,
 785             DBUS_TYPE_STRING, &pt,
 786             DBUS_TYPE_STRING, &host_name,
 787             DBUS_TYPE_INVALID);
 788
 789         dbus_connection_send(server->bus, reply, NULL);
 790         dbus_message_unref(reply);
 791     } else {
 792         g_assert(event == AVAHI_RESOLVER_TIMEOUT);
 793         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
 794     }
 795
 796     address_resolver_free(i);
 797 }
 798
 799 static DBusHandlerResult msg_domain_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 800     DBusError error;
 801     DomainBrowserInfo *i = userdata;
 802
 803     g_assert(c);
 804     g_assert(m);
 805     g_assert(i);
 806
 807     dbus_error_init(&error);
 808
 809     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 810                     dbus_message_get_interface(m),
 811                     dbus_message_get_path(m),
 812                     dbus_message_get_member(m));
 813
 814     /* Introspection */
 815     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 816         return handle_introspect(c, m, "DomainBrowser.introspect");
 817
 818     /* Access control */
 819     if (strcmp(dbus_message_get_sender(m), i->client->name))
 820         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 821
 822     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Free")) {
 823
 824         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 825             avahi_log_warn("Error parsing DomainBrowser::Free message");
 826             goto fail;
 827         }
 828
 829         domain_browser_free(i);
 830         return respond_ok(c, m);
 831
 832     }
 833
 834     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 835
 836 fail:
 837     if (dbus_error_is_set(&error))
 838         dbus_error_free(&error);
 839
 840     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 841 }
 842
 843 static void domain_browser_callback(AvahiDomainBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const gchar *domain, gpointer userdata) {
 844     DomainBrowserInfo *i = userdata;
 845     DBusMessage *m;
 846     gint32 i_interface, i_protocol;
 847
 848     g_assert(b);
 849     g_assert(domain);
 850     g_assert(i);
 851
 852     i_interface = (gint32) interface;
 853     i_protocol = (gint32) protocol;
 854
 855     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
 856     dbus_message_append_args(
 857         m,
 858         DBUS_TYPE_INT32, &i_interface,
 859         DBUS_TYPE_INT32, &i_protocol,
 860         DBUS_TYPE_STRING, &domain,
 861         DBUS_TYPE_INVALID);
 862     dbus_message_set_destination(m, i->client->name);
 863     dbus_connection_send(server->bus, m, NULL);
 864     dbus_message_unref(m);
 865 }
 866
 867 static DBusHandlerResult msg_service_type_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 868     DBusError error;
 869     ServiceTypeBrowserInfo *i = userdata;
 870
 871     g_assert(c);
 872     g_assert(m);
 873     g_assert(i);
 874
 875     dbus_error_init(&error);
 876
 877     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 878                     dbus_message_get_interface(m),
 879                     dbus_message_get_path(m),
 880                     dbus_message_get_member(m));
 881
 882     /* Introspection */
 883     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 884         return handle_introspect(c, m, "ServiceTypeBrowser.introspect");
 885
 886     /* Access control */
 887     if (strcmp(dbus_message_get_sender(m), i->client->name))
 888         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 889
 890     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Free")) {
 891
 892         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 893             avahi_log_warn("Error parsing ServiceTypeBrowser::Free message");
 894             goto fail;
 895         }
 896
 897         service_type_browser_free(i);
 898         return respond_ok(c, m);
 899
 900     }
 901
 902     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 903
 904 fail:
 905     if (dbus_error_is_set(&error))
 906         dbus_error_free(&error);
 907
 908     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 909 }
 910
 911 static void service_type_browser_callback(AvahiServiceTypeBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const gchar *type, const gchar *domain, gpointer userdata) {
 912     ServiceTypeBrowserInfo *i = userdata;
 913     DBusMessage *m;
 914     gint32 i_interface, i_protocol;
 915
 916     g_assert(b);
 917     g_assert(type);
 918     g_assert(domain);
 919     g_assert(i);
 920
 921     i_interface = (gint32) interface;
 922     i_protocol = (gint32) protocol;
 923
 924     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
 925     dbus_message_append_args(
 926         m,
 927         DBUS_TYPE_INT32, &i_interface,
 928         DBUS_TYPE_INT32, &i_protocol,
 929         DBUS_TYPE_STRING, &type,
 930         DBUS_TYPE_STRING, &domain,
 931         DBUS_TYPE_INVALID);
 932     dbus_message_set_destination(m, i->client->name);
 933     dbus_connection_send(server->bus, m, NULL);
 934     dbus_message_unref(m);
 935 }
 936
 937 static DBusHandlerResult msg_service_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 938     DBusError error;
 939     ServiceBrowserInfo *i = userdata;
 940
 941     g_assert(c);
 942     g_assert(m);
 943     g_assert(i);
 944
 945     dbus_error_init(&error);
 946
 947     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 948                     dbus_message_get_interface(m),
 949                     dbus_message_get_path(m),
 950                     dbus_message_get_member(m));
 951
 952     /* Introspection */
 953     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 954         return handle_introspect(c, m, "ServiceBrowser.Introspect");
 955
 956     /* Access control */
 957     if (strcmp(dbus_message_get_sender(m), i->client->name))
 958         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 959
 960     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Free")) {
 961
 962         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 963             avahi_log_warn("Error parsing ServiceBrowser::Free message");
 964             goto fail;
 965         }
 966
 967         service_browser_free(i);
 968         return respond_ok(c, m);
 969
 970     }
 971
 972     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 973
 974 fail:
 975     if (dbus_error_is_set(&error))
 976         dbus_error_free(&error);
 977
 978     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 979 }
 980
 981 static void service_browser_callback(AvahiServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const gchar *name, const gchar *type, const gchar *domain, gpointer userdata) {
 982     ServiceBrowserInfo *i = userdata;
 983     DBusMessage *m;
 984     gint32 i_interface, i_protocol;
 985
 986     g_assert(b);
 987     g_assert(name);
 988     g_assert(type);
 989     g_assert(domain);
 990     g_assert(i);
 991
 992     i_interface = (gint32) interface;
 993     i_protocol = (gint32) protocol;
 994
 995     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
 996     dbus_message_append_args(
 997         m,
 998         DBUS_TYPE_INT32, &i_interface,
 999         DBUS_TYPE_INT32, &i_protocol,
1000         DBUS_TYPE_STRING, &name,
1001         DBUS_TYPE_STRING, &type,
1002         DBUS_TYPE_STRING, &domain,
1003         DBUS_TYPE_INVALID);
1004     dbus_message_set_destination(m, i->client->name);
1005     dbus_connection_send(server->bus, m, NULL);
1006     dbus_message_unref(m);
1007 }
1008
1009 static void service_resolver_callback(
1010     AvahiServiceResolver *r,
1011     AvahiIfIndex interface,
1012     AvahiProtocol protocol,
1013     AvahiResolverEvent event,
1014     const gchar *name,
1015     const gchar *type,
1016     const gchar *domain,
1017     const gchar *host_name,
1018     const AvahiAddress *a,
1019     guint16 port,
1020     AvahiStringList *txt,
1021     gpointer userdata) {
1022
1023     ServiceResolverInfo *i = userdata;
1024
1025     g_assert(r);
1026     g_assert(i);
1027
1028     if (event == AVAHI_RESOLVER_FOUND) {
1029         char t[256], *pt = t;
1030         gint32 i_interface, i_protocol, i_aprotocol;
1031         guint n, j;
1032         AvahiStringList *p;
1033         DBusMessage *reply;
1034         DBusMessageIter iter, sub;
1035
1036         g_assert(host_name);
1037
1038         g_assert(a);
1039         avahi_address_snprint(t, sizeof(t), a);
1040
1041         i_interface = (gint32) interface;
1042         i_protocol = (gint32) protocol;
1043         i_aprotocol = (gint32) a->family;
1044
1045         reply = dbus_message_new_method_return(i->message);
1046         dbus_message_append_args(
1047             reply,
1048             DBUS_TYPE_INT32, &i_interface,
1049             DBUS_TYPE_INT32, &i_protocol,
1050             DBUS_TYPE_STRING, &name,
1051             DBUS_TYPE_STRING, &type,
1052             DBUS_TYPE_STRING, &domain,
1053             DBUS_TYPE_STRING, &host_name,
1054             DBUS_TYPE_INT32, &i_aprotocol,
1055             DBUS_TYPE_STRING, &pt,
1056             DBUS_TYPE_UINT16, &port,
1057             DBUS_TYPE_INVALID);
1058
1059         dbus_message_iter_init_append(reply, &iter);
1060         dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "ay", &sub);
1061
1062         for (p = txt, j = n-1; p; p = p->next, j--) {
1063             DBusMessageIter sub2;
1064             const guint8 *data = p->text;
1065
1066             dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "y", &sub2);
1067             dbus_message_iter_append_fixed_array(&sub2, DBUS_TYPE_BYTE, &data, p->size);
1068             dbus_message_iter_close_container(&sub, &sub2);
1069
1070         }
1071         dbus_message_iter_close_container(&iter, &sub);
1072
1073         dbus_connection_send(server->bus, reply, NULL);
1074         dbus_message_unref(reply);
1075     } else {
1076         g_assert(event == AVAHI_RESOLVER_TIMEOUT);
1077
1078         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
1079     }
1080
1081     service_resolver_free(i);
1082 }
1083
1084 static DBusHandlerResult msg_server_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1085     DBusError error;
1086
1087     dbus_error_init(&error);
1088
1089     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1090                     dbus_message_get_interface(m),
1091                     dbus_message_get_path(m),
1092                     dbus_message_get_member(m));
1093
1094     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1095         return handle_introspect(c, m, "Server.introspect");
1096
1097     else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostName")) {
1098
1099         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1100             avahi_log_warn("Error parsing Server::GetHostName message");
1101             goto fail;
1102         }
1103
1104         return respond_string(c, m, avahi_server_get_host_name(avahi_server));
1105
1106     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetDomainName")) {
1107
1108         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1109             avahi_log_warn("Error parsing Server::GetDomainName message");
1110             goto fail;
1111         }
1112
1113         return respond_string(c, m, avahi_server_get_domain_name(avahi_server));
1114
1115     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostNameFqdn")) {
1116
1117         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1118             avahi_log_warn("Error parsing Server::GetHostNameFqdn message");
1119             goto fail;
1120         }
1121
1122         return respond_string(c, m, avahi_server_get_host_name_fqdn(avahi_server));
1123
1124     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetVersionString")) {
1125
1126         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1127             avahi_log_warn("Error parsing Server::GetVersionString message");
1128             goto fail;
1129         }
1130
1131         return respond_string(c, m, PACKAGE_STRING);
1132
1133     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetState")) {
1134
1135         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1136             avahi_log_warn("Error parsing Server::GetState message");
1137             goto fail;
1138         }
1139
1140         return respond_int32(c, m, (gint32) avahi_server_get_state(avahi_server));
1141
1142     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetNetworkInterfaceNameByIndex")) {
1143         gint32 idx;
1144         int fd;
1145         struct ifreq ifr;
1146
1147         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INT32, &idx, DBUS_TYPE_INVALID))) {
1148             avahi_log_warn("Error parsing Server::GetNetworkInterfaceNameByIndex message");
1149             goto fail;
1150         }
1151
1152 #ifdef VALGRIND_WORKAROUND
1153         return respond_string(c, m, "blah");
1154 #else
1155
1156         if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1157             gchar txt[256];
1158             g_snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1159             return respond_error(c, m, AVAHI_ERR_OS, txt);
1160         }
1161
1162         memset(&ifr, 0, sizeof(ifr));
1163         ifr.ifr_ifindex = idx;
1164
1165         if (ioctl(fd, SIOCGIFNAME, &ifr) < 0) {
1166             gchar txt[256];
1167             g_snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1168             close(fd);
1169             return respond_error(c, m, AVAHI_ERR_OS, txt);
1170         }
1171
1172         close(fd);
1173
1174         return respond_string(c, m, ifr.ifr_name);
1175 #endif
1176
1177     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetNetworkInterfaceIndexByName")) {
1178         gchar *n;
1179         int fd;
1180         struct ifreq ifr;
1181
1182         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1183             avahi_log_warn("Error parsing Server::GetNetworkInterfaceIndexByName message");
1184             goto fail;
1185         }
1186
1187 #ifdef VALGRIND_WORKAROUND
1188         return respond_int32(c, m, 1);
1189 #else
1190         if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1191             gchar txt[256];
1192             g_snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1193             return respond_error(c, m, AVAHI_ERR_OS, txt);
1194         }
1195
1196         memset(&ifr, 0, sizeof(ifr));
1197         g_snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", n);
1198
1199         if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
1200             gchar txt[256];
1201             g_snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1202             close(fd);
1203             return respond_error(c, m, AVAHI_ERR_OS, txt);
1204         }
1205
1206         close(fd);
1207
1208         return respond_int32(c, m, ifr.ifr_ifindex);
1209 #endif
1210
1211     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetAlternativeHostName")) {
1212         gchar *n, * t;
1213
1214         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1215             avahi_log_warn("Error parsing Server::GetAlternativeHostName message");
1216             goto fail;
1217         }
1218
1219         t = avahi_alternative_host_name(n);
1220         respond_string(c, m, t);
1221         g_free(t);
1222
1223         return DBUS_HANDLER_RESULT_HANDLED;
1224
1225     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetAlternativeServiceName")) {
1226         gchar *n, *t;
1227
1228         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1229             avahi_log_warn("Error parsing Server::GetAlternativeServiceName message");
1230             goto fail;
1231         }
1232
1233         t = avahi_alternative_service_name(n);
1234         respond_string(c, m, t);
1235         g_free(t);
1236
1237         return DBUS_HANDLER_RESULT_HANDLED;
1238
1239     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "EntryGroupNew")) {
1240         Client *client;
1241         EntryGroupInfo *i;
1242         static const DBusObjectPathVTable vtable = {
1243             NULL,
1244             msg_entry_group_impl,
1245             NULL,
1246             NULL,
1247             NULL,
1248             NULL
1249         };
1250
1251         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1252             avahi_log_warn("Error parsing Server::EntryGroupNew message");
1253             goto fail;
1254         }
1255
1256         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1257             avahi_log_warn("Too many clients, client request failed.");
1258             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1259         }
1260
1261         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1262             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1263             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1264         }
1265
1266         i = g_new(EntryGroupInfo, 1);
1267         i->id = ++client->current_id;
1268         i->client = client;
1269         i->path = g_strdup_printf("/Client%u/EntryGroup%u", client->id, i->id);
1270         i->n_entries = 0;
1271         AVAHI_LLIST_PREPEND(EntryGroupInfo, entry_groups, client->entry_groups, i);
1272         client->n_objects++;
1273
1274         if (!(i->entry_group = avahi_entry_group_new(avahi_server, entry_group_callback, i))) {
1275             entry_group_free(i);
1276             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1277         }
1278
1279         dbus_connection_register_object_path(c, i->path, &vtable, i);
1280         return respond_path(c, m, i->path);
1281
1282     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveHostName")) {
1283         Client *client;
1284         gint32 interface, protocol, aprotocol;
1285         gchar *name;
1286         HostNameResolverInfo *i;
1287
1288         if (!dbus_message_get_args(
1289                 m, &error,
1290                 DBUS_TYPE_INT32, &interface,
1291                 DBUS_TYPE_INT32, &protocol,
1292                 DBUS_TYPE_STRING, &name,
1293                 DBUS_TYPE_INT32, &aprotocol,
1294                 DBUS_TYPE_INVALID) || !name) {
1295             avahi_log_warn("Error parsing Server::ResolveHostName message");
1296             goto fail;
1297         }
1298
1299         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1300             avahi_log_warn("Too many clients, client request failed.");
1301             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1302         }
1303
1304         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1305             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1306             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1307         }
1308
1309         i = g_new(HostNameResolverInfo, 1);
1310         i->client = client;
1311         i->message = dbus_message_ref(m);
1312         AVAHI_LLIST_PREPEND(HostNameResolverInfo, host_name_resolvers, client->host_name_resolvers, i);
1313         client->n_objects++;
1314
1315         if (!(i->host_name_resolver = avahi_host_name_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, (AvahiProtocol) aprotocol, host_name_resolver_callback, i))) {
1316             host_name_resolver_free(i);
1317             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1318         }
1319
1320         return DBUS_HANDLER_RESULT_HANDLED;
1321
1322     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveAddress")) {
1323         Client *client;
1324         gint32 interface, protocol;
1325         gchar *address;
1326         AddressResolverInfo *i;
1327         AvahiAddress a;
1328
1329         if (!dbus_message_get_args(
1330                 m, &error,
1331                 DBUS_TYPE_INT32, &interface,
1332                 DBUS_TYPE_INT32, &protocol,
1333                 DBUS_TYPE_STRING, &address,
1334                 DBUS_TYPE_INVALID) || !address) {
1335             avahi_log_warn("Error parsing Server::ResolveAddress message");
1336             goto fail;
1337         }
1338
1339         if (!avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))
1340             return respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);
1341
1342         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1343             avahi_log_warn("Too many clients, client request failed.");
1344             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1345         }
1346
1347         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1348             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1349             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1350         }
1351
1352         i = g_new(AddressResolverInfo, 1);
1353         i->client = client;
1354         i->message = dbus_message_ref(m);
1355         AVAHI_LLIST_PREPEND(AddressResolverInfo, address_resolvers, client->address_resolvers, i);
1356         client->n_objects++;
1357
1358         if (!(i->address_resolver = avahi_address_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, &a, address_resolver_callback, i))) {
1359             address_resolver_free(i);
1360             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1361         }
1362
1363         return DBUS_HANDLER_RESULT_HANDLED;
1364
1365     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "DomainBrowserNew")) {
1366         Client *client;
1367         DomainBrowserInfo *i;
1368         static const DBusObjectPathVTable vtable = {
1369             NULL,
1370             msg_domain_browser_impl,
1371             NULL,
1372             NULL,
1373             NULL,
1374             NULL
1375         };
1376         gint32 interface, protocol, type;
1377         gchar *domain;
1378
1379
1380         if (!dbus_message_get_args(
1381                 m, &error,
1382                 DBUS_TYPE_INT32, &interface,
1383                 DBUS_TYPE_INT32, &protocol,
1384                 DBUS_TYPE_STRING, &domain,
1385                 DBUS_TYPE_INT32, &type,
1386                 DBUS_TYPE_INVALID) || type < 0 || type >= AVAHI_DOMAIN_BROWSER_MAX) {
1387             avahi_log_warn("Error parsing Server::DomainBrowserNew message");
1388             goto fail;
1389         }
1390
1391         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1392             avahi_log_warn("Too many clients, client request failed.");
1393             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1394         }
1395
1396         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1397             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1398             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1399         }
1400
1401         if (!*domain)
1402             domain = NULL;
1403
1404         i = g_new(DomainBrowserInfo, 1);
1405         i->id = ++client->current_id;
1406         i->client = client;
1407         i->path = g_strdup_printf("/Client%u/DomainBrowser%u", client->id, i->id);
1408         AVAHI_LLIST_PREPEND(DomainBrowserInfo, domain_browsers, client->domain_browsers, i);
1409         client->n_objects++;
1410
1411         if (!(i->domain_browser = avahi_domain_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, domain, (AvahiDomainBrowserType) type, domain_browser_callback, i))) {
1412             domain_browser_free(i);
1413             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1414         }
1415
1416         dbus_connection_register_object_path(c, i->path, &vtable, i);
1417         return respond_path(c, m, i->path);
1418
1419     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ServiceTypeBrowserNew")) {
1420         Client *client;
1421         ServiceTypeBrowserInfo *i;
1422         static const DBusObjectPathVTable vtable = {
1423             NULL,
1424             msg_service_type_browser_impl,
1425             NULL,
1426             NULL,
1427             NULL,
1428             NULL
1429         };
1430         gint32 interface, protocol;
1431         gchar *domain;
1432
1433         if (!dbus_message_get_args(
1434                 m, &error,
1435                 DBUS_TYPE_INT32, &interface,
1436                 DBUS_TYPE_INT32, &protocol,
1437                 DBUS_TYPE_STRING, &domain,
1438                 DBUS_TYPE_INVALID)) {
1439             avahi_log_warn("Error parsing Server::ServiceTypeBrowserNew message");
1440             goto fail;
1441         }
1442
1443         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1444             avahi_log_warn("Too many clients, client request failed.");
1445             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1446         }
1447
1448
1449         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1450             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1451             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1452         }
1453
1454         if (!*domain)
1455             domain = NULL;
1456
1457         i = g_new(ServiceTypeBrowserInfo, 1);
1458         i->id = ++client->current_id;
1459         i->client = client;
1460         i->path = g_strdup_printf("/Client%u/ServiceTypeBrowser%u", client->id, i->id);
1461         AVAHI_LLIST_PREPEND(ServiceTypeBrowserInfo, service_type_browsers, client->service_type_browsers, i);
1462         client->n_objects++;
1463
1464         if (!(i->service_type_browser = avahi_service_type_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, domain, service_type_browser_callback, i))) {
1465             service_type_browser_free(i);
1466             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1467         }
1468
1469         dbus_connection_register_object_path(c, i->path, &vtable, i);
1470         return respond_path(c, m, i->path);
1471
1472      } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ServiceBrowserNew")) {
1473         Client *client;
1474         ServiceBrowserInfo *i;
1475         static const DBusObjectPathVTable vtable = {
1476             NULL,
1477             msg_service_browser_impl,
1478             NULL,
1479             NULL,
1480             NULL,
1481             NULL
1482         };
1483         gint32 interface, protocol;
1484         gchar *domain, *type;
1485
1486         if (!dbus_message_get_args(
1487                 m, &error,
1488                 DBUS_TYPE_INT32, &interface,
1489                 DBUS_TYPE_INT32, &protocol,
1490                 DBUS_TYPE_STRING, &type,
1491                 DBUS_TYPE_STRING, &domain,
1492                 DBUS_TYPE_INVALID) || !type) {
1493             avahi_log_warn("Error parsing Server::ServiceBrowserNew message");
1494             goto fail;
1495         }
1496
1497         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1498             avahi_log_warn("Too many clients, client request failed.");
1499             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1500         }
1501
1502
1503         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1504             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1505             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1506         }
1507
1508         if (!*domain)
1509             domain = NULL;
1510
1511         i = g_new(ServiceBrowserInfo, 1);
1512         i->id = ++client->current_id;
1513         i->client = client;
1514         i->path = g_strdup_printf("/Client%u/ServiceBrowser%u", client->id, i->id);
1515         AVAHI_LLIST_PREPEND(ServiceBrowserInfo, service_browsers, client->service_browsers, i);
1516         client->n_objects++;
1517
1518         if (!(i->service_browser = avahi_service_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, type, domain, service_browser_callback, i))) {
1519             service_browser_free(i);
1520             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1521         }
1522
1523         dbus_connection_register_object_path(c, i->path, &vtable, i);
1524         return respond_path(c, m, i->path);
1525
1526     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveService")) {
1527         Client *client;
1528         gint32 interface, protocol, aprotocol;
1529         gchar *name, *type, *domain;
1530         ServiceResolverInfo *i;
1531
1532         if (!dbus_message_get_args(
1533                 m, &error,
1534                 DBUS_TYPE_INT32, &interface,
1535                 DBUS_TYPE_INT32, &protocol,
1536                 DBUS_TYPE_STRING, &name,
1537                 DBUS_TYPE_STRING, &type,
1538                 DBUS_TYPE_STRING, &domain,
1539                 DBUS_TYPE_INT32, &aprotocol,
1540                 DBUS_TYPE_INVALID) || !name || !type) {
1541             avahi_log_warn("Error parsing Server::ResolveService message");
1542             goto fail;
1543         }
1544
1545         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1546             avahi_log_warn("Too many clients, client request failed.");
1547             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1548         }
1549
1550         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1551             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1552             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1553         }
1554
1555         if (!*domain)
1556             domain = NULL;
1557
1558         i = g_new(ServiceResolverInfo, 1);
1559         i->client = client;
1560         i->message = dbus_message_ref(m);
1561         AVAHI_LLIST_PREPEND(ServiceResolverInfo, service_resolvers, client->service_resolvers, i);
1562         client->n_objects++;
1563
1564         if (!(i->service_resolver = avahi_service_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, (AvahiProtocol) aprotocol, service_resolver_callback, i))) {
1565             service_resolver_free(i);
1566             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1567         }
1568
1569         return DBUS_HANDLER_RESULT_HANDLED;
1570      }
1571
1572     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1573
1574 fail:
1575     if (dbus_error_is_set(&error))
1576         dbus_error_free(&error);
1577
1578     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1579 }
1580
1581 void dbus_protocol_server_state_changed(AvahiServerState state) {
1582     DBusMessage *m;
1583     gint32 t;
1584
1585     if (!server)
1586         return;
1587
1588     m = dbus_message_new_signal(AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged");
1589     t = (gint32) state;
1590     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
1591     dbus_connection_send(server->bus, m, NULL);
1592     dbus_message_unref(m);
1593 }
1594
1595 int dbus_protocol_setup(GMainLoop *loop) {
1596     DBusError error;
1597
1598     static const DBusObjectPathVTable server_vtable = {
1599         NULL,
1600         msg_server_impl,
1601         NULL,
1602         NULL,
1603         NULL,
1604         NULL
1605     };
1606
1607     dbus_error_init(&error);
1608
1609     server = g_malloc(sizeof(Server));
1610     server->clients = NULL;
1611     server->current_id = 0;
1612     server->n_clients = 0;
1613
1614     server->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
1615     if (dbus_error_is_set(&error)) {
1616         avahi_log_warn("dbus_bus_get(): %s", error.message);
1617         goto fail;
1618     }
1619
1620     dbus_connection_setup_with_g_main(server->bus, NULL);
1621     dbus_connection_set_exit_on_disconnect(server->bus, FALSE);
1622
1623     dbus_bus_request_name(server->bus, AVAHI_DBUS_NAME, 0, &error);
1624     if (dbus_error_is_set(&error)) {
1625         avahi_log_warn("dbus_bus_request_name(): %s", error.message);
1626         goto fail;
1627     }
1628
1629     dbus_bus_add_match(server->bus, "type='signal',""interface='" DBUS_INTERFACE_DBUS  "'", &error);
1630
1631     dbus_connection_add_filter(server->bus, msg_signal_filter_impl, loop, NULL);
1632     dbus_connection_register_object_path(server->bus, AVAHI_DBUS_PATH_SERVER, &server_vtable, NULL);
1633
1634     return 0;
1635
1636 fail:
1637     if (server->bus) {
1638         dbus_connection_disconnect(server->bus);
1639         dbus_connection_unref(server->bus);
1640     }
1641
1642     dbus_error_free (&error);
1643     g_free(server);
1644     server = NULL;
1645     return -1;
1646 }
1647
1648 void dbus_protocol_shutdown(void) {
1649
1650     if (server) {
1651
1652         while (server->clients)
1653             client_free(server->clients);
1654
1655         g_assert(server->n_clients == 0);
1656
1657         if (server->bus) {
1658             dbus_connection_disconnect(server->bus);
1659             dbus_connection_unref(server->bus);
1660         }
1661
1662         g_free(server);
1663         server = NULL;
1664     }
1665 }