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 <assert.h>
  32 #include <sys/stat.h>
  33 #include <fcntl.h>
  34 #include <stdio.h>
  35 #include <signal.h>
  36
  37 #include <dbus/dbus.h>
  38
  39 #include <avahi-common/dbus.h>
  40 #include <avahi-common/llist.h>
  41 #include <avahi-common/malloc.h>
  42 #include <avahi-common/dbus.h>
  43 #include <avahi-common/dbus-watch-glue.h>
  44 #include <avahi-common/alternative.h>
  45 #include <avahi-common/error.h>
  46 #include <avahi-core/log.h>
  47 #include <avahi-core/core.h>
  48
  49 #include "dbus-protocol.h"
  50 #include "main.h"
  51
  52 typedef struct Server Server;
  53 typedef struct Client Client;
  54 typedef struct EntryGroupInfo EntryGroupInfo;
  55 typedef struct SyncHostNameResolverInfo SyncHostNameResolverInfo;
  56 typedef struct AsyncHostNameResolverInfo AsyncHostNameResolverInfo;
  57 typedef struct SyncAddressResolverInfo SyncAddressResolverInfo;
  58 typedef struct AsyncAddressResolverInfo AsyncAddressResolverInfo;
  59 typedef struct DomainBrowserInfo DomainBrowserInfo;
  60 typedef struct ServiceTypeBrowserInfo ServiceTypeBrowserInfo;
  61 typedef struct ServiceBrowserInfo ServiceBrowserInfo;
  62 typedef struct SyncServiceResolverInfo SyncServiceResolverInfo;
  63 typedef struct AsyncServiceResolverInfo AsyncServiceResolverInfo;
  64
  65 #define MAX_CLIENTS 20
  66 #define MAX_OBJECTS_PER_CLIENT 50
  67 #define MAX_ENTRIES_PER_ENTRY_GROUP 20
  68
  69 /* #define VALGRIND_WORKAROUND */
  70
  71 struct EntryGroupInfo {
  72     unsigned id;
  73     Client *client;
  74     AvahiSEntryGroup *entry_group;
  75     char *path;
  76
  77     int n_entries;
  78
  79     AVAHI_LLIST_FIELDS(EntryGroupInfo, entry_groups);
  80 };
  81
  82 struct SyncHostNameResolverInfo {
  83     Client *client;
  84     AvahiSHostNameResolver *host_name_resolver;
  85     DBusMessage *message;
  86
  87     AVAHI_LLIST_FIELDS(SyncHostNameResolverInfo, sync_host_name_resolvers);
  88 };
  89
  90 struct AsyncHostNameResolverInfo {
  91     unsigned id;
  92     Client *client;
  93     AvahiSHostNameResolver *host_name_resolver;
  94     char *path;
  95
  96     AVAHI_LLIST_FIELDS(AsyncHostNameResolverInfo, async_host_name_resolvers);
  97 };
  98
  99 struct SyncAddressResolverInfo {
 100     Client *client;
 101     AvahiSAddressResolver *address_resolver;
 102     DBusMessage *message;
 103
 104     AVAHI_LLIST_FIELDS(SyncAddressResolverInfo, sync_address_resolvers);
 105 };
 106
 107 struct AsyncAddressResolverInfo {
 108     unsigned id;
 109     Client *client;
 110     AvahiSAddressResolver *address_resolver;
 111     char *path;
 112
 113     AVAHI_LLIST_FIELDS(AsyncAddressResolverInfo, async_address_resolvers);
 114 };
 115
 116 struct DomainBrowserInfo {
 117     unsigned id;
 118     Client *client;
 119     AvahiSDomainBrowser *domain_browser;
 120     char *path;
 121
 122     AVAHI_LLIST_FIELDS(DomainBrowserInfo, domain_browsers);
 123 };
 124
 125 struct ServiceTypeBrowserInfo {
 126     unsigned id;
 127     Client *client;
 128     AvahiSServiceTypeBrowser *service_type_browser;
 129     char *path;
 130
 131     AVAHI_LLIST_FIELDS(ServiceTypeBrowserInfo, service_type_browsers);
 132 };
 133
 134 struct ServiceBrowserInfo {
 135     unsigned id;
 136     Client *client;
 137     AvahiSServiceBrowser *service_browser;
 138     char *path;
 139
 140     AVAHI_LLIST_FIELDS(ServiceBrowserInfo, service_browsers);
 141 };
 142
 143 struct SyncServiceResolverInfo {
 144     Client *client;
 145     AvahiSServiceResolver *service_resolver;
 146     DBusMessage *message;
 147
 148     AVAHI_LLIST_FIELDS(SyncServiceResolverInfo, sync_service_resolvers);
 149 };
 150
 151 struct AsyncServiceResolverInfo {
 152     unsigned id;
 153     Client *client;
 154     AvahiSServiceResolver *service_resolver;
 155     char *path;
 156
 157     AVAHI_LLIST_FIELDS(AsyncServiceResolverInfo, async_service_resolvers);
 158 };
 159
 160 struct Client {
 161     unsigned id;
 162     char *name;
 163     unsigned current_id;
 164     int n_objects;
 165
 166     AVAHI_LLIST_FIELDS(Client, clients);
 167     AVAHI_LLIST_HEAD(EntryGroupInfo, entry_groups);
 168     AVAHI_LLIST_HEAD(SyncHostNameResolverInfo, sync_host_name_resolvers);
 169     AVAHI_LLIST_HEAD(AsyncHostNameResolverInfo, async_host_name_resolvers);
 170     AVAHI_LLIST_HEAD(SyncAddressResolverInfo, sync_address_resolvers);
 171     AVAHI_LLIST_HEAD(AsyncAddressResolverInfo, async_address_resolvers);
 172     AVAHI_LLIST_HEAD(DomainBrowserInfo, domain_browsers);
 173     AVAHI_LLIST_HEAD(ServiceTypeBrowserInfo, service_type_browsers);
 174     AVAHI_LLIST_HEAD(ServiceBrowserInfo, service_browsers);
 175     AVAHI_LLIST_HEAD(SyncServiceResolverInfo, sync_service_resolvers);
 176     AVAHI_LLIST_HEAD(AsyncServiceResolverInfo, async_service_resolvers);
 177 };
 178
 179 struct Server {
 180     DBusConnection *bus;
 181     AVAHI_LLIST_HEAD(Client, clients);
 182     int n_clients;
 183     unsigned current_id;
 184 };
 185
 186 static Server *server = NULL;
 187
 188 static void entry_group_free(EntryGroupInfo *i) {
 189     assert(i);
 190
 191     if (i->entry_group)
 192         avahi_s_entry_group_free(i->entry_group);
 193     dbus_connection_unregister_object_path(server->bus, i->path);
 194     avahi_free(i->path);
 195     AVAHI_LLIST_REMOVE(EntryGroupInfo, entry_groups, i->client->entry_groups, i);
 196
 197     i->client->n_objects--;
 198     assert(i->client->n_objects >= 0);
 199
 200     avahi_free(i);
 201 }
 202
 203 static void sync_host_name_resolver_free(SyncHostNameResolverInfo *i) {
 204     assert(i);
 205
 206     if (i->host_name_resolver)
 207         avahi_s_host_name_resolver_free(i->host_name_resolver);
 208     dbus_message_unref(i->message);
 209     AVAHI_LLIST_REMOVE(SyncHostNameResolverInfo, sync_host_name_resolvers, i->client->sync_host_name_resolvers, i);
 210
 211     i->client->n_objects--;
 212     assert(i->client->n_objects >= 0);
 213
 214     avahi_free(i);
 215 }
 216
 217 static void async_host_name_resolver_free(AsyncHostNameResolverInfo *i) {
 218     assert(i);
 219
 220     if (i->host_name_resolver)
 221         avahi_s_host_name_resolver_free(i->host_name_resolver);
 222     dbus_connection_unregister_object_path(server->bus, i->path);
 223     AVAHI_LLIST_REMOVE(AsyncHostNameResolverInfo, async_host_name_resolvers, i->client->async_host_name_resolvers, i);
 224
 225     i->client->n_objects--;
 226     assert(i->client->n_objects >= 0);
 227
 228     avahi_free(i);
 229 }
 230
 231 static void sync_address_resolver_free(SyncAddressResolverInfo *i) {
 232     assert(i);
 233
 234     if (i->address_resolver)
 235         avahi_s_address_resolver_free(i->address_resolver);
 236     dbus_message_unref(i->message);
 237     AVAHI_LLIST_REMOVE(SyncAddressResolverInfo, sync_address_resolvers, i->client->sync_address_resolvers, i);
 238
 239     i->client->n_objects--;
 240     assert(i->client->n_objects >= 0);
 241
 242     avahi_free(i);
 243 }
 244
 245 static void async_address_resolver_free(AsyncAddressResolverInfo *i) {
 246     assert(i);
 247
 248     if (i->address_resolver)
 249         avahi_s_address_resolver_free(i->address_resolver);
 250     dbus_connection_unregister_object_path(server->bus, i->path);
 251     AVAHI_LLIST_REMOVE(AsyncAddressResolverInfo, async_address_resolvers, i->client->async_address_resolvers, i);
 252
 253     i->client->n_objects--;
 254     assert(i->client->n_objects >= 0);
 255
 256     avahi_free(i);
 257 }
 258
 259 static void domain_browser_free(DomainBrowserInfo *i) {
 260     assert(i);
 261
 262     if (i->domain_browser)
 263         avahi_s_domain_browser_free(i->domain_browser);
 264     dbus_connection_unregister_object_path(server->bus, i->path);
 265     avahi_free(i->path);
 266     AVAHI_LLIST_REMOVE(DomainBrowserInfo, domain_browsers, i->client->domain_browsers, i);
 267
 268     i->client->n_objects--;
 269     assert(i->client->n_objects >= 0);
 270
 271     avahi_free(i);
 272 }
 273
 274 static void service_type_browser_free(ServiceTypeBrowserInfo *i) {
 275     assert(i);
 276
 277     if (i->service_type_browser)
 278         avahi_s_service_type_browser_free(i->service_type_browser);
 279     dbus_connection_unregister_object_path(server->bus, i->path);
 280     avahi_free(i->path);
 281     AVAHI_LLIST_REMOVE(ServiceTypeBrowserInfo, service_type_browsers, i->client->service_type_browsers, i);
 282
 283     i->client->n_objects--;
 284     assert(i->client->n_objects >= 0);
 285
 286     avahi_free(i);
 287 }
 288
 289 static void service_browser_free(ServiceBrowserInfo *i) {
 290     assert(i);
 291
 292     if (i->service_browser)
 293         avahi_s_service_browser_free(i->service_browser);
 294     dbus_connection_unregister_object_path(server->bus, i->path);
 295     avahi_free(i->path);
 296     AVAHI_LLIST_REMOVE(ServiceBrowserInfo, service_browsers, i->client->service_browsers, i);
 297
 298     i->client->n_objects--;
 299     assert(i->client->n_objects >= 0);
 300
 301     avahi_free(i);
 302 }
 303
 304 static void sync_service_resolver_free(SyncServiceResolverInfo *i) {
 305     assert(i);
 306
 307     if (i->service_resolver)
 308         avahi_s_service_resolver_free(i->service_resolver);
 309     dbus_message_unref(i->message);
 310     AVAHI_LLIST_REMOVE(SyncServiceResolverInfo, sync_service_resolvers, i->client->sync_service_resolvers, i);
 311
 312     i->client->n_objects--;
 313     assert(i->client->n_objects >= 0);
 314
 315     avahi_free(i);
 316 }
 317
 318 static void async_service_resolver_free(AsyncServiceResolverInfo *i) {
 319     assert(i);
 320
 321     if (i->service_resolver)
 322         avahi_s_service_resolver_free(i->service_resolver);
 323
 324     dbus_connection_unregister_object_path(server->bus, i->path);
 325     AVAHI_LLIST_REMOVE(AsyncServiceResolverInfo, async_service_resolvers, i->client->async_service_resolvers, i);
 326
 327     i->client->n_objects--;
 328     assert(i->client->n_objects >= 0);
 329
 330     avahi_free(i);
 331 }
 332
 333 static void client_free(Client *c) {
 334
 335     assert(server);
 336     assert(c);
 337
 338     while (c->entry_groups)
 339         entry_group_free(c->entry_groups);
 340
 341     while (c->sync_host_name_resolvers)
 342         sync_host_name_resolver_free(c->sync_host_name_resolvers);
 343
 344     while (c->async_host_name_resolvers)
 345         async_host_name_resolver_free(c->async_host_name_resolvers);
 346
 347     while (c->sync_address_resolvers)
 348         sync_address_resolver_free(c->sync_address_resolvers);
 349
 350     while (c->async_address_resolvers)
 351         async_address_resolver_free(c->async_address_resolvers);
 352
 353     while (c->domain_browsers)
 354         domain_browser_free(c->domain_browsers);
 355
 356     while (c->service_type_browsers)
 357         service_type_browser_free(c->service_type_browsers);
 358
 359     while (c->service_browsers)
 360         service_browser_free(c->service_browsers);
 361
 362     while (c->sync_service_resolvers)
 363         sync_service_resolver_free(c->sync_service_resolvers);
 364
 365     while (c->async_service_resolvers)
 366         async_service_resolver_free(c->async_service_resolvers);
 367
 368     assert(c->n_objects == 0);
 369
 370     avahi_free(c->name);
 371     AVAHI_LLIST_REMOVE(Client, clients, server->clients, c);
 372     avahi_free(c);
 373
 374     server->n_clients --;
 375     assert(server->n_clients >= 0);
 376 }
 377
 378 static Client *client_get(const char *name, int create) {
 379     Client *client;
 380
 381     assert(server);
 382     assert(name);
 383
 384     for (client = server->clients; client; client = client->clients_next)
 385         if (!strcmp(name, client->name))
 386             return client;
 387
 388     if (!create)
 389         return NULL;
 390
 391     if (server->n_clients >= MAX_CLIENTS)
 392         return NULL;
 393
 394     /* If not existant yet, create a new entry */
 395     client = avahi_new(Client, 1);
 396     client->id = server->current_id++;
 397     client->name = avahi_strdup(name);
 398     client->current_id = 0;
 399     client->n_objects = 0;
 400
 401     AVAHI_LLIST_HEAD_INIT(EntryGroupInfo, client->entry_groups);
 402     AVAHI_LLIST_HEAD_INIT(SyncHostNameResolverInfo, client->sync_host_name_resolvers);
 403     AVAHI_LLIST_HEAD_INIT(AsyncHostNameResolverInfo, client->async_host_name_resolvers);
 404     AVAHI_LLIST_HEAD_INIT(SyncAddressResolverInfo, client->sync_address_resolvers);
 405     AVAHI_LLIST_HEAD_INIT(AsyncAddressResolverInfo, client->async_address_resolvers);
 406     AVAHI_LLIST_HEAD_INIT(DomainBrowserInfo, client->domain_browsers);
 407     AVAHI_LLIST_HEAD_INIT(ServiceTypeBrowserInfo, client->service_type_browsers);
 408     AVAHI_LLIST_HEAD_INIT(ServiceBrowserInfo, client->service_browsers);
 409     AVAHI_LLIST_HEAD_INIT(SyncServiceResolverInfo, client->sync_service_resolvers);
 410     AVAHI_LLIST_HEAD_INIT(AsyncServiceResolverInfo, client->async_service_resolvers);
 411
 412     AVAHI_LLIST_PREPEND(Client, clients, server->clients, client);
 413
 414     server->n_clients++;
 415     assert(server->n_clients > 0);
 416
 417     return client;
 418 }
 419
 420 static DBusHandlerResult respond_error(DBusConnection *c, DBusMessage *m, int error, const char *text) {
 421     DBusMessage *reply;
 422
 423     assert(-error > -AVAHI_OK);
 424     assert(-error < -AVAHI_ERR_MAX);
 425
 426     reply = dbus_message_new_error(m, avahi_error_number_to_dbus (error), text ? text : avahi_strerror(error));
 427     dbus_connection_send(c, reply, NULL);
 428     dbus_message_unref(reply);
 429
 430     return DBUS_HANDLER_RESULT_HANDLED;
 431 }
 432
 433 static DBusHandlerResult respond_string(DBusConnection *c, DBusMessage *m, const char *text) {
 434     DBusMessage *reply;
 435
 436     reply = dbus_message_new_method_return(m);
 437     dbus_message_append_args(reply, DBUS_TYPE_STRING, &text, DBUS_TYPE_INVALID);
 438     dbus_connection_send(c, reply, NULL);
 439     dbus_message_unref(reply);
 440
 441     return DBUS_HANDLER_RESULT_HANDLED;
 442 }
 443
 444 static DBusHandlerResult respond_int32(DBusConnection *c, DBusMessage *m, int32_t i) {
 445     DBusMessage *reply;
 446
 447     reply = dbus_message_new_method_return(m);
 448     dbus_message_append_args(reply, DBUS_TYPE_INT32, &i, DBUS_TYPE_INVALID);
 449     dbus_connection_send(c, reply, NULL);
 450     dbus_message_unref(reply);
 451
 452     return DBUS_HANDLER_RESULT_HANDLED;
 453 }
 454
 455 static DBusHandlerResult respond_ok(DBusConnection *c, DBusMessage *m) {
 456     DBusMessage *reply;
 457
 458     reply = dbus_message_new_method_return(m);
 459     dbus_connection_send(c, reply, NULL);
 460     dbus_message_unref(reply);
 461
 462     return DBUS_HANDLER_RESULT_HANDLED;
 463 }
 464
 465 static DBusHandlerResult respond_path(DBusConnection *c, DBusMessage *m, const char *path) {
 466     DBusMessage *reply;
 467
 468     reply = dbus_message_new_method_return(m);
 469     dbus_message_append_args(reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 470     dbus_connection_send(c, reply, NULL);
 471     dbus_message_unref(reply);
 472
 473     return DBUS_HANDLER_RESULT_HANDLED;
 474 }
 475
 476 static char *file_get_contents(char *fname) {
 477     int fd = -1;
 478     struct stat st;
 479     ssize_t size;
 480     char *buf = NULL;
 481
 482     assert(fname);
 483
 484     if (!(fd = open(fname, O_RDONLY))) {
 485         avahi_log_error("Failed to open %s: %s", fname, strerror(errno));
 486         goto fail;
 487     }
 488
 489     if (fstat(fd, &st) < 0) {
 490         avahi_log_error("stat(%s) failed: %s", fname, strerror(errno));
 491         goto fail;
 492     }
 493
 494     if (!(S_ISREG(st.st_mode))) {
 495         avahi_log_error("Invalid file %s", fname);
 496         goto fail;
 497     }
 498
 499     if (st.st_size > 1024*1024) { /** 1MB */
 500         avahi_log_error("File too large %s", fname);
 501         goto fail;
 502     }
 503
 504     buf = avahi_new(char, st.st_size+1);
 505
 506     if ((size = read(fd, buf, st.st_size)) < 0) {
 507         avahi_log_error("read() failed: %s\n", strerror(errno));
 508         goto fail;
 509     }
 510
 511     buf[size] = 0;
 512
 513     close(fd);
 514     return buf;
 515
 516 fail:
 517     if (fd >= 0)
 518         close(fd);
 519
 520     if (buf)
 521         avahi_free(buf);
 522
 523     return NULL;
 524
 525 }
 526
 527 static DBusHandlerResult handle_introspect(DBusConnection *c, DBusMessage *m, const char *fname) {
 528     char *path, *contents;
 529     DBusError error;
 530
 531     assert(c);
 532     assert(m);
 533     assert(fname);
 534
 535     dbus_error_init(&error);
 536
 537     if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 538         avahi_log_error("Error parsing Introspect message: %s", error.message);
 539         goto fail;
 540     }
 541
 542     path = avahi_strdup_printf("%s/%s", AVAHI_DBUS_INTROSPECTION_DIR, fname);
 543     contents = file_get_contents(path);
 544     avahi_free(path);
 545
 546     if (!contents) {
 547         avahi_log_error("Failed to load introspection data.");
 548         goto fail;
 549     }
 550
 551     respond_string(c, m, contents);
 552     avahi_free(contents);
 553
 554     return DBUS_HANDLER_RESULT_HANDLED;
 555
 556 fail:
 557     if (dbus_error_is_set(&error))
 558         dbus_error_free(&error);
 559
 560     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 561
 562 }
 563
 564 static DBusHandlerResult msg_signal_filter_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 565     DBusError error;
 566
 567     dbus_error_init(&error);
 568
 569 /*     avahi_log_debug("dbus: interface=%s, path=%s, member=%s", */
 570 /*                     dbus_message_get_interface(m), */
 571 /*                     dbus_message_get_path(m), */
 572 /*                     dbus_message_get_member(m)); */
 573
 574     if (dbus_message_is_signal(m, DBUS_INTERFACE_LOCAL, "Disconnected")) {
 575         /* No, we shouldn't quit, but until we get somewhere
 576          * usefull such that we can restore our state, we will */
 577         avahi_log_warn("Disconnnected from d-bus, terminating...");
 578
 579         raise(SIGQUIT); /* The signal handler will catch this and terminate the process cleanly*/
 580
 581         return DBUS_HANDLER_RESULT_HANDLED;
 582
 583     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameAcquired")) {
 584         char *name;
 585
 586         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
 587             avahi_log_warn("Error parsing NameAcquired message");
 588             goto fail;
 589         }
 590
 591 /*         avahi_log_info("dbus: name acquired (%s)", name); */
 592         return DBUS_HANDLER_RESULT_HANDLED;
 593
 594     } else if (dbus_message_is_signal(m, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
 595         char *name, *old, *new;
 596
 597         if (!dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID)) {
 598             avahi_log_warn("Error parsing NameOwnerChanged message");
 599             goto fail;
 600         }
 601
 602         if (!*new) {
 603             Client *client;
 604
 605             if ((client = client_get(name, FALSE))) {
 606 /*                 avahi_log_info("dbus: client %s vanished", name); */
 607                 client_free(client);
 608             }
 609         }
 610     }
 611
 612 fail:
 613     if (dbus_error_is_set(&error))
 614         dbus_error_free(&error);
 615
 616     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 617 }
 618
 619 static void entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void* userdata) {
 620     EntryGroupInfo *i = userdata;
 621     DBusMessage *m;
 622     int32_t t;
 623
 624     assert(s);
 625     assert(g);
 626     assert(i);
 627
 628     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged");
 629     t = (int32_t) state;
 630     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
 631     dbus_message_set_destination(m, i->client->name);
 632     dbus_connection_send(server->bus, m, NULL);
 633     dbus_message_unref(m);
 634 }
 635
 636 static DBusHandlerResult msg_entry_group_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 637     DBusError error;
 638     EntryGroupInfo *i = userdata;
 639
 640     assert(c);
 641     assert(m);
 642     assert(i);
 643
 644     dbus_error_init(&error);
 645
 646     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 647                     dbus_message_get_interface(m),
 648                     dbus_message_get_path(m),
 649                     dbus_message_get_member(m));
 650
 651     /* Introspection */
 652     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 653         return handle_introspect(c, m, "EntryGroup.introspect");
 654
 655     /* Access control */
 656     if (strcmp(dbus_message_get_sender(m), i->client->name))
 657         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 658
 659     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Free")) {
 660
 661         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 662             avahi_log_warn("Error parsing EntryGroup::Free message");
 663             goto fail;
 664         }
 665
 666         entry_group_free(i);
 667         return respond_ok(c, m);
 668
 669     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Commit")) {
 670
 671         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 672             avahi_log_warn("Error parsing EntryGroup::Commit message");
 673             goto fail;
 674         }
 675
 676         avahi_s_entry_group_commit(i->entry_group);
 677         return respond_ok(c, m);
 678
 679
 680     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Reset")) {
 681
 682         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 683             avahi_log_warn("Error parsing EntryGroup::Reset message");
 684             goto fail;
 685         }
 686
 687         avahi_s_entry_group_reset(i->entry_group);
 688         return respond_ok(c, m);
 689
 690     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "IsEmpty")) {
 691         DBusMessage *reply;
 692         int b;
 693
 694         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 695             avahi_log_warn("Error parsing EntryGroup::IsEmpty message");
 696             goto fail;
 697         }
 698
 699         b = !!avahi_s_entry_group_is_empty(i->entry_group);
 700
 701         reply = dbus_message_new_method_return(m);
 702         dbus_message_append_args(reply, DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID);
 703         dbus_connection_send(c, reply, NULL);
 704         dbus_message_unref(reply);
 705
 706         return DBUS_HANDLER_RESULT_HANDLED;
 707
 708     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "GetState")) {
 709         AvahiEntryGroupState state;
 710
 711         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 712             avahi_log_warn("Error parsing EntryGroup::GetState message");
 713             goto fail;
 714         }
 715
 716         state = avahi_s_entry_group_get_state(i->entry_group);
 717         return respond_int32(c, m, (int32_t) state);
 718
 719     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddService")) {
 720         int32_t interface, protocol;
 721         char *type, *name, *domain, *host;
 722         uint16_t port;
 723         AvahiStringList *strlst;
 724         DBusMessageIter iter, sub;
 725         int j;
 726
 727         if (!dbus_message_get_args(
 728                 m, &error,
 729                 DBUS_TYPE_INT32, &interface,
 730                 DBUS_TYPE_INT32, &protocol,
 731                 DBUS_TYPE_STRING, &name,
 732                 DBUS_TYPE_STRING, &type,
 733                 DBUS_TYPE_STRING, &domain,
 734                 DBUS_TYPE_STRING, &host,
 735                 DBUS_TYPE_UINT16, &port,
 736                 DBUS_TYPE_INVALID) || !type || !name) {
 737             avahi_log_warn("Error parsing EntryGroup::AddService message");
 738             goto fail;
 739         }
 740
 741         dbus_message_iter_init(m, &iter);
 742
 743         for (j = 0; j < 7; j++)
 744             dbus_message_iter_next(&iter);
 745
 746         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 747             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_ARRAY) {
 748             avahi_log_warn("Error parsing EntryGroup::AddService message 2");
 749             goto fail;
 750         }
 751
 752         strlst = NULL;
 753         dbus_message_iter_recurse(&iter, &sub);
 754
 755         for (;;) {
 756             DBusMessageIter sub2;
 757             int at, n;
 758             uint8_t *k;
 759
 760             if ((at = dbus_message_iter_get_arg_type(&sub)) == DBUS_TYPE_INVALID)
 761                 break;
 762
 763             assert(at == DBUS_TYPE_ARRAY);
 764
 765             if (dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_BYTE) {
 766                 avahi_log_warn("Error parsing EntryGroup::AddService message");
 767                 goto fail;
 768             }
 769
 770             dbus_message_iter_recurse(&sub, &sub2);
 771             dbus_message_iter_get_fixed_array(&sub2, &k, &n);
 772             strlst = avahi_string_list_add_arbitrary(strlst, k, n);
 773
 774             dbus_message_iter_next(&sub);
 775         }
 776
 777         if (i->n_entries >= MAX_ENTRIES_PER_ENTRY_GROUP) {
 778             avahi_string_list_free(strlst);
 779             avahi_log_warn("Too many entries per entry group, client request failed.");
 780             return respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);
 781         }
 782
 783         if (domain && !*domain)
 784             domain = NULL;
 785
 786         if (host && !*host)
 787             host = NULL;
 788
 789         if (avahi_server_add_service_strlst(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, host, port, strlst) < 0) {
 790             avahi_string_list_free(strlst);
 791             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
 792         } else
 793             i->n_entries ++;
 794
 795         avahi_string_list_free(strlst);
 796
 797         return respond_ok(c, m);
 798
 799     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddAddress")) {
 800         int32_t interface, protocol;
 801         char *name, *address;
 802         AvahiAddress a;
 803
 804         if (!dbus_message_get_args(
 805                 m, &error,
 806                 DBUS_TYPE_INT32, &interface,
 807                 DBUS_TYPE_INT32, &protocol,
 808                 DBUS_TYPE_STRING, &name,
 809                 DBUS_TYPE_STRING, &address,
 810                 DBUS_TYPE_INVALID) || !name || !address) {
 811             avahi_log_warn("Error parsing EntryGroup::AddAddress message");
 812             goto fail;
 813         }
 814
 815         if (i->n_entries >= MAX_ENTRIES_PER_ENTRY_GROUP) {
 816             avahi_log_warn("Too many entries per entry group, client request failed.");
 817             return respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);
 818         }
 819
 820         if (!(avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))) {
 821             return respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);
 822         }
 823
 824         if (avahi_server_add_address(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, 0, name, &a) < 0)
 825             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
 826         else
 827             i->n_entries ++;
 828
 829         return respond_ok(c, m);
 830     }
 831
 832     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 833
 834 fail:
 835     if (dbus_error_is_set(&error))
 836         dbus_error_free(&error);
 837
 838     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 839 }
 840
 841 static void sync_host_name_resolver_callback(AvahiSHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *host_name, const AvahiAddress *a, void* userdata) {
 842     SyncHostNameResolverInfo *i = userdata;
 843
 844     assert(r);
 845     assert(host_name);
 846     assert(i);
 847
 848     if (event == AVAHI_RESOLVER_FOUND) {
 849         char t[256], *pt = t;
 850         int32_t i_interface, i_protocol, i_aprotocol;
 851         DBusMessage *reply;
 852
 853         assert(a);
 854         avahi_address_snprint(t, sizeof(t), a);
 855
 856         i_interface = (int32_t) interface;
 857         i_protocol = (int32_t) protocol;
 858         i_aprotocol = (int32_t) a->family;
 859
 860         reply = dbus_message_new_method_return(i->message);
 861         dbus_message_append_args(
 862             reply,
 863             DBUS_TYPE_INT32, &i_interface,
 864             DBUS_TYPE_INT32, &i_protocol,
 865             DBUS_TYPE_STRING, &host_name,
 866             DBUS_TYPE_INT32, &i_aprotocol,
 867             DBUS_TYPE_STRING, &pt,
 868             DBUS_TYPE_INVALID);
 869
 870         dbus_connection_send(server->bus, reply, NULL);
 871         dbus_message_unref(reply);
 872     } else {
 873         assert(event == AVAHI_RESOLVER_TIMEOUT);
 874
 875         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
 876     }
 877
 878     sync_host_name_resolver_free(i);
 879 }
 880
 881 static void sync_address_resolver_callback(AvahiSAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const AvahiAddress *address, const char *host_name, void* userdata) {
 882     SyncAddressResolverInfo *i = userdata;
 883
 884     assert(r);
 885     assert(address);
 886     assert(i);
 887
 888     if (event == AVAHI_RESOLVER_FOUND) {
 889         char t[256], *pt = t;
 890         int32_t i_interface, i_protocol, i_aprotocol;
 891         DBusMessage *reply;
 892
 893         assert(host_name);
 894         avahi_address_snprint(t, sizeof(t), address);
 895
 896         i_interface = (int32_t) interface;
 897         i_protocol = (int32_t) protocol;
 898         i_aprotocol = (int32_t) address->family;
 899
 900         reply = dbus_message_new_method_return(i->message);
 901         dbus_message_append_args(
 902             reply,
 903             DBUS_TYPE_INT32, &i_interface,
 904             DBUS_TYPE_INT32, &i_protocol,
 905             DBUS_TYPE_INT32, &i_aprotocol,
 906             DBUS_TYPE_STRING, &pt,
 907             DBUS_TYPE_STRING, &host_name,
 908             DBUS_TYPE_INVALID);
 909
 910         dbus_connection_send(server->bus, reply, NULL);
 911         dbus_message_unref(reply);
 912     } else {
 913         assert(event == AVAHI_RESOLVER_TIMEOUT);
 914         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
 915     }
 916
 917     sync_address_resolver_free(i);
 918 }
 919
 920 static DBusHandlerResult msg_domain_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 921     DBusError error;
 922     DomainBrowserInfo *i = userdata;
 923
 924     assert(c);
 925     assert(m);
 926     assert(i);
 927
 928     dbus_error_init(&error);
 929
 930     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 931                     dbus_message_get_interface(m),
 932                     dbus_message_get_path(m),
 933                     dbus_message_get_member(m));
 934
 935     /* Introspection */
 936     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 937         return handle_introspect(c, m, "DomainBrowser.introspect");
 938
 939     /* Access control */
 940     if (strcmp(dbus_message_get_sender(m), i->client->name))
 941         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 942
 943     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Free")) {
 944
 945         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 946             avahi_log_warn("Error parsing DomainBrowser::Free message");
 947             goto fail;
 948         }
 949
 950         domain_browser_free(i);
 951         return respond_ok(c, m);
 952
 953     }
 954
 955     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 956
 957 fail:
 958     if (dbus_error_is_set(&error))
 959         dbus_error_free(&error);
 960
 961     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 962 }
 963
 964 static void domain_browser_callback(AvahiSDomainBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *domain, void* userdata) {
 965     DomainBrowserInfo *i = userdata;
 966     DBusMessage *m;
 967     int32_t i_interface, i_protocol;
 968
 969     assert(b);
 970     assert(domain);
 971     assert(i);
 972
 973     i_interface = (int32_t) interface;
 974     i_protocol = (int32_t) protocol;
 975
 976     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
 977     dbus_message_append_args(
 978         m,
 979         DBUS_TYPE_INT32, &i_interface,
 980         DBUS_TYPE_INT32, &i_protocol,
 981         DBUS_TYPE_STRING, &domain,
 982         DBUS_TYPE_INVALID);
 983     dbus_message_set_destination(m, i->client->name);
 984     dbus_connection_send(server->bus, m, NULL);
 985     dbus_message_unref(m);
 986 }
 987
 988 static DBusHandlerResult msg_service_type_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 989     DBusError error;
 990     ServiceTypeBrowserInfo *i = userdata;
 991
 992     assert(c);
 993     assert(m);
 994     assert(i);
 995
 996     dbus_error_init(&error);
 997
 998     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
 999                     dbus_message_get_interface(m),
1000                     dbus_message_get_path(m),
1001                     dbus_message_get_member(m));
1002
1003     /* Introspection */
1004     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1005         return handle_introspect(c, m, "ServiceTypeBrowser.introspect");
1006
1007     /* Access control */
1008     if (strcmp(dbus_message_get_sender(m), i->client->name))
1009         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
1010
1011     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Free")) {
1012
1013         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1014             avahi_log_warn("Error parsing ServiceTypeBrowser::Free message");
1015             goto fail;
1016         }
1017
1018         service_type_browser_free(i);
1019         return respond_ok(c, m);
1020
1021     }
1022
1023     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1024
1025 fail:
1026     if (dbus_error_is_set(&error))
1027         dbus_error_free(&error);
1028
1029     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1030 }
1031
1032 static void service_type_browser_callback(AvahiSServiceTypeBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *type, const char *domain, void* userdata) {
1033     ServiceTypeBrowserInfo *i = userdata;
1034     DBusMessage *m;
1035     int32_t i_interface, i_protocol;
1036
1037     assert(b);
1038     assert(type);
1039     assert(domain);
1040     assert(i);
1041
1042     i_interface = (int32_t) interface;
1043     i_protocol = (int32_t) protocol;
1044
1045     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
1046     dbus_message_append_args(
1047         m,
1048         DBUS_TYPE_INT32, &i_interface,
1049         DBUS_TYPE_INT32, &i_protocol,
1050         DBUS_TYPE_STRING, &type,
1051         DBUS_TYPE_STRING, &domain,
1052         DBUS_TYPE_INVALID);
1053     dbus_message_set_destination(m, i->client->name);
1054     dbus_connection_send(server->bus, m, NULL);
1055     dbus_message_unref(m);
1056 }
1057
1058 static DBusHandlerResult msg_service_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1059     DBusError error;
1060     ServiceBrowserInfo *i = userdata;
1061
1062     assert(c);
1063     assert(m);
1064     assert(i);
1065
1066     dbus_error_init(&error);
1067
1068     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1069                     dbus_message_get_interface(m),
1070                     dbus_message_get_path(m),
1071                     dbus_message_get_member(m));
1072
1073     /* Introspection */
1074     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1075         return handle_introspect(c, m, "ServiceBrowser.Introspect");
1076
1077     /* Access control */
1078     if (strcmp(dbus_message_get_sender(m), i->client->name))
1079         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
1080
1081     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Free")) {
1082
1083         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1084             avahi_log_warn("Error parsing ServiceBrowser::Free message");
1085             goto fail;
1086         }
1087
1088         service_browser_free(i);
1089         return respond_ok(c, m);
1090
1091     }
1092
1093     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1094
1095 fail:
1096     if (dbus_error_is_set(&error))
1097         dbus_error_free(&error);
1098
1099     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1100 }
1101
1102 static void service_browser_callback(AvahiSServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *name, const char *type, const char *domain, void* userdata) {
1103     ServiceBrowserInfo *i = userdata;
1104     DBusMessage *m;
1105     int32_t i_interface, i_protocol;
1106
1107     assert(b);
1108     assert(name);
1109     assert(type);
1110     assert(domain);
1111     assert(i);
1112
1113     i_interface = (int32_t) interface;
1114     i_protocol = (int32_t) protocol;
1115
1116     m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, event == AVAHI_BROWSER_NEW ? "ItemNew" : "ItemRemove");
1117     dbus_message_append_args(
1118         m,
1119         DBUS_TYPE_INT32, &i_interface,
1120         DBUS_TYPE_INT32, &i_protocol,
1121         DBUS_TYPE_STRING, &name,
1122         DBUS_TYPE_STRING, &type,
1123         DBUS_TYPE_STRING, &domain,
1124         DBUS_TYPE_INVALID);
1125     dbus_message_set_destination(m, i->client->name);
1126     dbus_connection_send(server->bus, m, NULL);
1127     dbus_message_unref(m);
1128 }
1129
1130 static void append_string_list(DBusMessage *reply, AvahiStringList *txt) {
1131     AvahiStringList *p;
1132     DBusMessageIter iter, sub;
1133
1134     assert(reply);
1135
1136     dbus_message_iter_init_append(reply, &iter);
1137     dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "ay", &sub);
1138
1139     for (p = txt; p; p = p->next) {
1140         DBusMessageIter sub2;
1141         const uint8_t *data = p->text;
1142
1143         dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "y", &sub2);
1144         dbus_message_iter_append_fixed_array(&sub2, DBUS_TYPE_BYTE, &data, p->size);
1145         dbus_message_iter_close_container(&sub, &sub2);
1146
1147     }
1148     dbus_message_iter_close_container(&iter, &sub);
1149 }
1150
1151 static void sync_service_resolver_callback(
1152     AvahiSServiceResolver *r,
1153     AvahiIfIndex interface,
1154     AvahiProtocol protocol,
1155     AvahiResolverEvent event,
1156     const char *name,
1157     const char *type,
1158     const char *domain,
1159     const char *host_name,
1160     const AvahiAddress *a,
1161     uint16_t port,
1162     AvahiStringList *txt,
1163     void* userdata) {
1164
1165     SyncServiceResolverInfo *i = userdata;
1166
1167     assert(r);
1168     assert(i);
1169
1170     if (event == AVAHI_RESOLVER_FOUND) {
1171         char t[256], *pt = t;
1172         int32_t i_interface, i_protocol, i_aprotocol;
1173         DBusMessage *reply;
1174
1175         assert(host_name);
1176
1177         assert(a);
1178         avahi_address_snprint(t, sizeof(t), a);
1179
1180         i_interface = (int32_t) interface;
1181         i_protocol = (int32_t) protocol;
1182         i_aprotocol = (int32_t) a->family;
1183
1184         reply = dbus_message_new_method_return(i->message);
1185         dbus_message_append_args(
1186             reply,
1187             DBUS_TYPE_INT32, &i_interface,
1188             DBUS_TYPE_INT32, &i_protocol,
1189             DBUS_TYPE_STRING, &name,
1190             DBUS_TYPE_STRING, &type,
1191             DBUS_TYPE_STRING, &domain,
1192             DBUS_TYPE_STRING, &host_name,
1193             DBUS_TYPE_INT32, &i_aprotocol,
1194             DBUS_TYPE_STRING, &pt,
1195             DBUS_TYPE_UINT16, &port,
1196             DBUS_TYPE_INVALID);
1197
1198         append_string_list(reply, txt);
1199
1200         dbus_connection_send(server->bus, reply, NULL);
1201         dbus_message_unref(reply);
1202     } else {
1203         assert(event == AVAHI_RESOLVER_TIMEOUT);
1204
1205         respond_error(server->bus, i->message, AVAHI_ERR_TIMEOUT, NULL);
1206     }
1207
1208     sync_service_resolver_free(i);
1209 }
1210
1211 static void async_address_resolver_callback(AvahiSAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const AvahiAddress *address, const char *host_name, void* userdata) {
1212     AsyncAddressResolverInfo *i = userdata;
1213     DBusMessage *reply;
1214
1215     assert(r);
1216     assert(address);
1217     assert(i);
1218
1219     if (event == AVAHI_RESOLVER_FOUND) {
1220         char t[256], *pt = t;
1221         int32_t i_interface, i_protocol, i_aprotocol;
1222
1223         assert(host_name);
1224         avahi_address_snprint(t, sizeof(t), address);
1225
1226         i_interface = (int32_t) interface;
1227         i_protocol = (int32_t) protocol;
1228         i_aprotocol = (int32_t) address->family;
1229
1230         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Found");
1231         dbus_message_append_args(
1232             reply,
1233             DBUS_TYPE_INT32, &i_interface,
1234             DBUS_TYPE_INT32, &i_protocol,
1235             DBUS_TYPE_INT32, &i_aprotocol,
1236             DBUS_TYPE_STRING, &pt,
1237             DBUS_TYPE_STRING, &host_name,
1238             DBUS_TYPE_INVALID);
1239
1240     } else {
1241         assert(event == AVAHI_RESOLVER_TIMEOUT);
1242
1243         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Timeout");
1244     }
1245
1246     dbus_connection_send(server->bus, reply, NULL);
1247     dbus_message_unref(reply);
1248 }
1249
1250 static DBusHandlerResult msg_async_address_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1251     DBusError error;
1252     AsyncAddressResolverInfo *i = userdata;
1253
1254     assert(c);
1255     assert(m);
1256     assert(i);
1257
1258     dbus_error_init(&error);
1259
1260     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1261                     dbus_message_get_interface(m),
1262                     dbus_message_get_path(m),
1263                     dbus_message_get_member(m));
1264
1265     /* Introspection */
1266     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1267         return handle_introspect(c, m, "AddressResolver.Introspect");
1268
1269     /* Access control */
1270     if (strcmp(dbus_message_get_sender(m), i->client->name))
1271         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
1272
1273     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Free")) {
1274
1275         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1276             avahi_log_warn("Error parsing AddressResolver::Free message");
1277             goto fail;
1278         }
1279
1280         async_address_resolver_free(i);
1281         return respond_ok(c, m);
1282
1283     }
1284
1285     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1286
1287 fail:
1288     if (dbus_error_is_set(&error))
1289         dbus_error_free(&error);
1290
1291     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1292 }
1293
1294 static void async_host_name_resolver_callback(AvahiSHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *host_name, const AvahiAddress *a, void* userdata) {
1295     AsyncHostNameResolverInfo *i = userdata;
1296     DBusMessage *reply;
1297
1298     assert(r);
1299     assert(host_name);
1300     assert(i);
1301
1302     if (event == AVAHI_RESOLVER_FOUND) {
1303         char t[256], *pt = t;
1304         int32_t i_interface, i_protocol, i_aprotocol;
1305
1306         assert(a);
1307         avahi_address_snprint(t, sizeof(t), a);
1308
1309         i_interface = (int32_t) interface;
1310         i_protocol = (int32_t) protocol;
1311         i_aprotocol = (int32_t) a->family;
1312
1313         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Found");
1314         dbus_message_append_args(
1315             reply,
1316             DBUS_TYPE_INT32, &i_interface,
1317             DBUS_TYPE_INT32, &i_protocol,
1318             DBUS_TYPE_STRING, &host_name,
1319             DBUS_TYPE_INT32, &i_aprotocol,
1320             DBUS_TYPE_STRING, &pt,
1321             DBUS_TYPE_INVALID);
1322     } else {
1323         assert(event == AVAHI_RESOLVER_TIMEOUT);
1324
1325         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Timeout");
1326     }
1327
1328     dbus_connection_send(server->bus, reply, NULL);
1329     dbus_message_unref(reply);
1330 }
1331
1332 static DBusHandlerResult msg_async_host_name_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1333     DBusError error;
1334     AsyncHostNameResolverInfo *i = userdata;
1335
1336     assert(c);
1337     assert(m);
1338     assert(i);
1339
1340     dbus_error_init(&error);
1341
1342     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1343                     dbus_message_get_interface(m),
1344                     dbus_message_get_path(m),
1345                     dbus_message_get_member(m));
1346
1347     /* Introspection */
1348     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1349         return handle_introspect(c, m, "HostNameResolver.Introspect");
1350
1351     /* Access control */
1352     if (strcmp(dbus_message_get_sender(m), i->client->name))
1353         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
1354
1355     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Free")) {
1356
1357         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1358             avahi_log_warn("Error parsing HostNameResolver::Free message");
1359             goto fail;
1360         }
1361
1362         async_host_name_resolver_free(i);
1363         return respond_ok(c, m);
1364     }
1365
1366     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1367
1368 fail:
1369     if (dbus_error_is_set(&error))
1370         dbus_error_free(&error);
1371
1372     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1373 }
1374
1375 static void async_service_resolver_callback(
1376     AvahiSServiceResolver *r,
1377     AvahiIfIndex interface,
1378     AvahiProtocol protocol,
1379     AvahiResolverEvent event,
1380     const char *name,
1381     const char *type,
1382     const char *domain,
1383     const char *host_name,
1384     const AvahiAddress *a,
1385     uint16_t port,
1386     AvahiStringList *txt,
1387     void* userdata) {
1388
1389     AsyncServiceResolverInfo *i = userdata;
1390     DBusMessage *reply;
1391
1392     assert(r);
1393     assert(host_name);
1394     assert(i);
1395
1396     if (event == AVAHI_RESOLVER_FOUND) {
1397         char t[256], *pt = t;
1398         int32_t i_interface, i_protocol, i_aprotocol;
1399
1400         assert(host_name);
1401
1402         assert(a);
1403         avahi_address_snprint(t, sizeof(t), a);
1404
1405         i_interface = (int32_t) interface;
1406         i_protocol = (int32_t) protocol;
1407         i_aprotocol = (int32_t) a->family;
1408
1409         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Found");
1410         dbus_message_append_args(
1411             reply,
1412             DBUS_TYPE_INT32, &i_interface,
1413             DBUS_TYPE_INT32, &i_protocol,
1414             DBUS_TYPE_STRING, &name,
1415             DBUS_TYPE_STRING, &type,
1416             DBUS_TYPE_STRING, &domain,
1417             DBUS_TYPE_STRING, &host_name,
1418             DBUS_TYPE_INT32, &i_aprotocol,
1419             DBUS_TYPE_STRING, &pt,
1420             DBUS_TYPE_UINT16, &port,
1421             DBUS_TYPE_INVALID);
1422
1423         append_string_list(reply, txt);
1424
1425     } else {
1426         assert(event == AVAHI_RESOLVER_TIMEOUT);
1427
1428         reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Timeout");
1429     }
1430
1431     dbus_connection_send(server->bus, reply, NULL);
1432     dbus_message_unref(reply);
1433 }
1434
1435 static DBusHandlerResult msg_async_service_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1436     DBusError error;
1437     AsyncServiceResolverInfo *i = userdata;
1438
1439     assert(c);
1440     assert(m);
1441     assert(i);
1442
1443     dbus_error_init(&error);
1444
1445     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1446                     dbus_message_get_interface(m),
1447                     dbus_message_get_path(m),
1448                     dbus_message_get_member(m));
1449
1450     /* Introspection */
1451     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1452         return handle_introspect(c, m, "ServiceResolver.Introspect");
1453
1454     /* Access control */
1455     if (strcmp(dbus_message_get_sender(m), i->client->name))
1456         return respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
1457
1458     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Free")) {
1459
1460         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1461             avahi_log_warn("Error parsing ServiceResolver::Free message");
1462             goto fail;
1463         }
1464
1465         async_service_resolver_free(i);
1466         return respond_ok(c, m);
1467     }
1468
1469     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
1470
1471 fail:
1472     if (dbus_error_is_set(&error))
1473         dbus_error_free(&error);
1474
1475     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1476 }
1477
1478 static DBusHandlerResult msg_server_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
1479     DBusError error;
1480
1481     dbus_error_init(&error);
1482
1483     avahi_log_debug("dbus: interface=%s, path=%s, member=%s",
1484                     dbus_message_get_interface(m),
1485                     dbus_message_get_path(m),
1486                     dbus_message_get_member(m));
1487
1488     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
1489         return handle_introspect(c, m, "Server.introspect");
1490
1491     else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostName")) {
1492
1493         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1494             avahi_log_warn("Error parsing Server::GetHostName message");
1495             goto fail;
1496         }
1497
1498         return respond_string(c, m, avahi_server_get_host_name(avahi_server));
1499
1500     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetDomainName")) {
1501
1502         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1503             avahi_log_warn("Error parsing Server::GetDomainName message");
1504             goto fail;
1505         }
1506
1507         return respond_string(c, m, avahi_server_get_domain_name(avahi_server));
1508
1509     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetHostNameFqdn")) {
1510
1511         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1512             avahi_log_warn("Error parsing Server::GetHostNameFqdn message");
1513             goto fail;
1514         }
1515
1516         return respond_string(c, m, avahi_server_get_host_name_fqdn(avahi_server));
1517
1518     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetVersionString")) {
1519
1520         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1521             avahi_log_warn("Error parsing Server::GetVersionString message");
1522             goto fail;
1523         }
1524
1525         return respond_string(c, m, PACKAGE_STRING);
1526
1527     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetState")) {
1528         AvahiServerState state;
1529
1530         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INVALID))) {
1531             avahi_log_warn("Error parsing Server::GetState message");
1532             goto fail;
1533         }
1534
1535         state = avahi_server_get_state(avahi_server);
1536         return respond_int32(c, m, (int32_t) state);
1537
1538     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetNetworkInterfaceNameByIndex")) {
1539         int32_t idx;
1540         int fd;
1541         struct ifreq ifr;
1542
1543         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_INT32, &idx, DBUS_TYPE_INVALID))) {
1544             avahi_log_warn("Error parsing Server::GetNetworkInterfaceNameByIndex message");
1545             goto fail;
1546         }
1547
1548 #ifdef VALGRIND_WORKAROUND
1549         return respond_string(c, m, "blah");
1550 #else
1551
1552         if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1553             char txt[256];
1554             snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1555             return respond_error(c, m, AVAHI_ERR_OS, txt);
1556         }
1557
1558         memset(&ifr, 0, sizeof(ifr));
1559         ifr.ifr_ifindex = idx;
1560
1561         if (ioctl(fd, SIOCGIFNAME, &ifr) < 0) {
1562             char txt[256];
1563             snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1564             close(fd);
1565             return respond_error(c, m, AVAHI_ERR_OS, txt);
1566         }
1567
1568         close(fd);
1569
1570         return respond_string(c, m, ifr.ifr_name);
1571 #endif
1572
1573     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetNetworkInterfaceIndexByName")) {
1574         char *n;
1575         int fd;
1576         struct ifreq ifr;
1577
1578         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1579             avahi_log_warn("Error parsing Server::GetNetworkInterfaceIndexByName message");
1580             goto fail;
1581         }
1582
1583 #ifdef VALGRIND_WORKAROUND
1584         return respond_int32(c, m, 1);
1585 #else
1586         if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1587             char txt[256];
1588             snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1589             return respond_error(c, m, AVAHI_ERR_OS, txt);
1590         }
1591
1592         memset(&ifr, 0, sizeof(ifr));
1593         snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", n);
1594
1595         if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
1596             char txt[256];
1597             snprintf(txt, sizeof(txt), "OS Error: %s", strerror(errno));
1598             close(fd);
1599             return respond_error(c, m, AVAHI_ERR_OS, txt);
1600         }
1601
1602         close(fd);
1603
1604         return respond_int32(c, m, ifr.ifr_ifindex);
1605 #endif
1606
1607     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetAlternativeHostName")) {
1608         char *n, * t;
1609
1610         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1611             avahi_log_warn("Error parsing Server::GetAlternativeHostName message");
1612             goto fail;
1613         }
1614
1615         t = avahi_alternative_host_name(n);
1616         respond_string(c, m, t);
1617         avahi_free(t);
1618
1619         return DBUS_HANDLER_RESULT_HANDLED;
1620
1621     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "GetAlternativeServiceName")) {
1622         char *n, *t;
1623
1624         if (!(dbus_message_get_args(m, &error, DBUS_TYPE_STRING, &n, DBUS_TYPE_INVALID)) || !n) {
1625             avahi_log_warn("Error parsing Server::GetAlternativeServiceName message");
1626             goto fail;
1627         }
1628
1629         t = avahi_alternative_service_name(n);
1630         respond_string(c, m, t);
1631         avahi_free(t);
1632
1633         return DBUS_HANDLER_RESULT_HANDLED;
1634
1635     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "EntryGroupNew")) {
1636         Client *client;
1637         EntryGroupInfo *i;
1638         static const DBusObjectPathVTable vtable = {
1639             NULL,
1640             msg_entry_group_impl,
1641             NULL,
1642             NULL,
1643             NULL,
1644             NULL
1645         };
1646
1647         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
1648             avahi_log_warn("Error parsing Server::EntryGroupNew message");
1649             goto fail;
1650         }
1651
1652         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1653             avahi_log_warn("Too many clients, client request failed.");
1654             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1655         }
1656
1657         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1658             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1659             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1660         }
1661
1662         i = avahi_new(EntryGroupInfo, 1);
1663         i->id = ++client->current_id;
1664         i->client = client;
1665         i->path = avahi_strdup_printf("/Client%u/EntryGroup%u", client->id, i->id);
1666         i->n_entries = 0;
1667         AVAHI_LLIST_PREPEND(EntryGroupInfo, entry_groups, client->entry_groups, i);
1668         client->n_objects++;
1669
1670         if (!(i->entry_group = avahi_s_entry_group_new(avahi_server, entry_group_callback, i))) {
1671             entry_group_free(i);
1672             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1673         }
1674
1675         dbus_connection_register_object_path(c, i->path, &vtable, i);
1676         return respond_path(c, m, i->path);
1677
1678     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveHostName")) {
1679         Client *client;
1680         int32_t interface, protocol, aprotocol;
1681         char *name;
1682         SyncHostNameResolverInfo *i;
1683
1684         if (!dbus_message_get_args(
1685                 m, &error,
1686                 DBUS_TYPE_INT32, &interface,
1687                 DBUS_TYPE_INT32, &protocol,
1688                 DBUS_TYPE_STRING, &name,
1689                 DBUS_TYPE_INT32, &aprotocol,
1690                 DBUS_TYPE_INVALID) || !name) {
1691             avahi_log_warn("Error parsing Server::ResolveHostName message");
1692             goto fail;
1693         }
1694
1695         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1696             avahi_log_warn("Too many clients, client request failed.");
1697             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1698         }
1699
1700         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1701             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1702             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1703         }
1704
1705         i = avahi_new(SyncHostNameResolverInfo, 1);
1706         i->client = client;
1707         i->message = dbus_message_ref(m);
1708         AVAHI_LLIST_PREPEND(SyncHostNameResolverInfo, sync_host_name_resolvers, client->sync_host_name_resolvers, i);
1709         client->n_objects++;
1710
1711         if (!(i->host_name_resolver = avahi_s_host_name_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, (AvahiProtocol) aprotocol, sync_host_name_resolver_callback, i))) {
1712             sync_host_name_resolver_free(i);
1713             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1714         }
1715
1716         return DBUS_HANDLER_RESULT_HANDLED;
1717
1718     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveAddress")) {
1719         Client *client;
1720         int32_t interface, protocol;
1721         char *address;
1722         SyncAddressResolverInfo *i;
1723         AvahiAddress a;
1724
1725         if (!dbus_message_get_args(
1726                 m, &error,
1727                 DBUS_TYPE_INT32, &interface,
1728                 DBUS_TYPE_INT32, &protocol,
1729                 DBUS_TYPE_STRING, &address,
1730                 DBUS_TYPE_INVALID) || !address) {
1731             avahi_log_warn("Error parsing Server::ResolveAddress message");
1732             goto fail;
1733         }
1734
1735         if (!avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))
1736             return respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);
1737
1738         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1739             avahi_log_warn("Too many clients, client request failed.");
1740             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1741         }
1742
1743         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1744             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1745             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1746         }
1747
1748         i = avahi_new(SyncAddressResolverInfo, 1);
1749         i->client = client;
1750         i->message = dbus_message_ref(m);
1751         AVAHI_LLIST_PREPEND(SyncAddressResolverInfo, sync_address_resolvers, client->sync_address_resolvers, i);
1752         client->n_objects++;
1753
1754         if (!(i->address_resolver = avahi_s_address_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, &a, sync_address_resolver_callback, i))) {
1755             sync_address_resolver_free(i);
1756             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1757         }
1758
1759         return DBUS_HANDLER_RESULT_HANDLED;
1760
1761     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "DomainBrowserNew")) {
1762         Client *client;
1763         DomainBrowserInfo *i;
1764         static const DBusObjectPathVTable vtable = {
1765             NULL,
1766             msg_domain_browser_impl,
1767             NULL,
1768             NULL,
1769             NULL,
1770             NULL
1771         };
1772         int32_t interface, protocol, type;
1773         char *domain;
1774
1775         if (!dbus_message_get_args(
1776                 m, &error,
1777                 DBUS_TYPE_INT32, &interface,
1778                 DBUS_TYPE_INT32, &protocol,
1779                 DBUS_TYPE_STRING, &domain,
1780                 DBUS_TYPE_INT32, &type,
1781                 DBUS_TYPE_INVALID) || type < 0 || type >= AVAHI_DOMAIN_BROWSER_MAX) {
1782             avahi_log_warn("Error parsing Server::DomainBrowserNew message");
1783             goto fail;
1784         }
1785
1786         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1787             avahi_log_warn("Too many clients, client request failed.");
1788             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1789         }
1790
1791         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1792             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1793             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1794         }
1795
1796         if (!*domain)
1797             domain = NULL;
1798
1799         i = avahi_new(DomainBrowserInfo, 1);
1800         i->id = ++client->current_id;
1801         i->client = client;
1802         i->path = avahi_strdup_printf("/Client%u/DomainBrowser%u", client->id, i->id);
1803         AVAHI_LLIST_PREPEND(DomainBrowserInfo, domain_browsers, client->domain_browsers, i);
1804         client->n_objects++;
1805
1806         if (!(i->domain_browser = avahi_s_domain_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, domain, (AvahiDomainBrowserType) type, domain_browser_callback, i))) {
1807             domain_browser_free(i);
1808             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1809         }
1810
1811         dbus_connection_register_object_path(c, i->path, &vtable, i);
1812         return respond_path(c, m, i->path);
1813
1814     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ServiceTypeBrowserNew")) {
1815         Client *client;
1816         ServiceTypeBrowserInfo *i;
1817         static const DBusObjectPathVTable vtable = {
1818             NULL,
1819             msg_service_type_browser_impl,
1820             NULL,
1821             NULL,
1822             NULL,
1823             NULL
1824         };
1825         int32_t interface, protocol;
1826         char *domain;
1827
1828         if (!dbus_message_get_args(
1829                 m, &error,
1830                 DBUS_TYPE_INT32, &interface,
1831                 DBUS_TYPE_INT32, &protocol,
1832                 DBUS_TYPE_STRING, &domain,
1833                 DBUS_TYPE_INVALID)) {
1834             avahi_log_warn("Error parsing Server::ServiceTypeBrowserNew message");
1835             goto fail;
1836         }
1837
1838         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1839             avahi_log_warn("Too many clients, client request failed.");
1840             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1841         }
1842
1843
1844         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1845             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1846             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1847         }
1848
1849         if (!*domain)
1850             domain = NULL;
1851
1852         i = avahi_new(ServiceTypeBrowserInfo, 1);
1853         i->id = ++client->current_id;
1854         i->client = client;
1855         i->path = avahi_strdup_printf("/Client%u/ServiceTypeBrowser%u", client->id, i->id);
1856         AVAHI_LLIST_PREPEND(ServiceTypeBrowserInfo, service_type_browsers, client->service_type_browsers, i);
1857         client->n_objects++;
1858
1859         if (!(i->service_type_browser = avahi_s_service_type_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, domain, service_type_browser_callback, i))) {
1860             service_type_browser_free(i);
1861             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1862         }
1863
1864         dbus_connection_register_object_path(c, i->path, &vtable, i);
1865         return respond_path(c, m, i->path);
1866
1867     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ServiceBrowserNew")) {
1868         Client *client;
1869         ServiceBrowserInfo *i;
1870         static const DBusObjectPathVTable vtable = {
1871             NULL,
1872             msg_service_browser_impl,
1873             NULL,
1874             NULL,
1875             NULL,
1876             NULL
1877         };
1878         int32_t interface, protocol;
1879         char *domain, *type;
1880
1881         if (!dbus_message_get_args(
1882                 m, &error,
1883                 DBUS_TYPE_INT32, &interface,
1884                 DBUS_TYPE_INT32, &protocol,
1885                 DBUS_TYPE_STRING, &type,
1886                 DBUS_TYPE_STRING, &domain,
1887                 DBUS_TYPE_INVALID) || !type) {
1888             avahi_log_warn("Error parsing Server::ServiceBrowserNew message");
1889             goto fail;
1890         }
1891
1892         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1893             avahi_log_warn("Too many clients, client request failed.");
1894             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1895         }
1896
1897
1898         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1899             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1900             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1901         }
1902
1903         if (!*domain)
1904             domain = NULL;
1905
1906         i = avahi_new(ServiceBrowserInfo, 1);
1907         i->id = ++client->current_id;
1908         i->client = client;
1909         i->path = avahi_strdup_printf("/Client%u/ServiceBrowser%u", client->id, i->id);
1910         AVAHI_LLIST_PREPEND(ServiceBrowserInfo, service_browsers, client->service_browsers, i);
1911         client->n_objects++;
1912
1913         if (!(i->service_browser = avahi_s_service_browser_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, type, domain, service_browser_callback, i))) {
1914             service_browser_free(i);
1915             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1916         }
1917
1918         dbus_connection_register_object_path(c, i->path, &vtable, i);
1919         return respond_path(c, m, i->path);
1920
1921     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ResolveService")) {
1922         Client *client;
1923         int32_t interface, protocol, aprotocol;
1924         char *name, *type, *domain;
1925         SyncServiceResolverInfo *i;
1926
1927         if (!dbus_message_get_args(
1928                 m, &error,
1929                 DBUS_TYPE_INT32, &interface,
1930                 DBUS_TYPE_INT32, &protocol,
1931                 DBUS_TYPE_STRING, &name,
1932                 DBUS_TYPE_STRING, &type,
1933                 DBUS_TYPE_STRING, &domain,
1934                 DBUS_TYPE_INT32, &aprotocol,
1935                 DBUS_TYPE_INVALID) || !name || !type) {
1936             avahi_log_warn("Error parsing Server::ResolveService message");
1937             goto fail;
1938         }
1939
1940         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1941             avahi_log_warn("Too many clients, client request failed.");
1942             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1943         }
1944
1945         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1946             avahi_log_warn("Too many objects for client '%s', client request failed.", client->name);
1947             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
1948         }
1949
1950         if (!*domain)
1951             domain = NULL;
1952
1953         i = avahi_new(SyncServiceResolverInfo, 1);
1954         i->client = client;
1955         i->message = dbus_message_ref(m);
1956         AVAHI_LLIST_PREPEND(SyncServiceResolverInfo, sync_service_resolvers, client->sync_service_resolvers, i);
1957         client->n_objects++;
1958
1959         if (!(i->service_resolver = avahi_s_service_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, (AvahiProtocol) aprotocol, sync_service_resolver_callback, i))) {
1960             sync_service_resolver_free(i);
1961             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
1962         }
1963
1964         return DBUS_HANDLER_RESULT_HANDLED;
1965
1966     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "ServiceResolverNew")) {
1967         Client *client;
1968         int32_t interface, protocol, aprotocol;
1969         char *name, *type, *domain;
1970         AsyncServiceResolverInfo *i;
1971         static const DBusObjectPathVTable vtable = {
1972             NULL,
1973             msg_async_service_resolver_impl,
1974             NULL,
1975             NULL,
1976             NULL,
1977             NULL
1978         };
1979
1980         if (!dbus_message_get_args(
1981                 m, &error,
1982                 DBUS_TYPE_INT32, &interface,
1983                 DBUS_TYPE_INT32, &protocol,
1984                 DBUS_TYPE_STRING, &name,
1985                 DBUS_TYPE_STRING, &type,
1986                 DBUS_TYPE_STRING, &domain,
1987                 DBUS_TYPE_INT32, &aprotocol,
1988                 DBUS_TYPE_INVALID) || !name || !type) {
1989             avahi_log_warn("Error parsing Server::ServiceResolverNew message");
1990             goto fail;
1991         }
1992
1993         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
1994             avahi_log_warn(__FILE__": Too many clients, client request failed.");
1995             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
1996         }
1997
1998         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
1999             avahi_log_warn(__FILE__": Too many objects for client '%s', client request failed.", client->name);
2000             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
2001         }
2002
2003         i = avahi_new(AsyncServiceResolverInfo, 1);
2004         i->id = ++client->current_id;
2005         i->client = client;
2006         i->path = avahi_strdup_printf("/Client%u/ServiceResolver%u", client->id, i->id);
2007         AVAHI_LLIST_PREPEND(AsyncServiceResolverInfo, async_service_resolvers, client->async_service_resolvers, i);
2008         client->n_objects++;
2009
2010         if (!(i->service_resolver = avahi_s_service_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, type, domain, (AvahiProtocol) aprotocol, async_service_resolver_callback, i))) {
2011             async_service_resolver_free(i);
2012             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
2013         }
2014
2015         dbus_connection_register_object_path(c, i->path, &vtable, i);
2016         return respond_path(c, m, i->path);
2017
2018     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "HostNameResolverNew")) {
2019         Client *client;
2020         int32_t interface, protocol, aprotocol;
2021         char *name;
2022         AsyncHostNameResolverInfo *i;
2023         static const DBusObjectPathVTable vtable = {
2024             NULL,
2025             msg_async_host_name_resolver_impl,
2026             NULL,
2027             NULL,
2028             NULL,
2029             NULL
2030         };
2031
2032         if (!dbus_message_get_args(
2033                 m, &error,
2034                 DBUS_TYPE_INT32, &interface,
2035                 DBUS_TYPE_INT32, &protocol,
2036                 DBUS_TYPE_STRING, &name,
2037                 DBUS_TYPE_INT32, &aprotocol,
2038                 DBUS_TYPE_INVALID) || !name) {
2039             avahi_log_warn("Error parsing Server::HostNameResolverNew message");
2040             goto fail;
2041         }
2042
2043         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
2044             avahi_log_warn(__FILE__": Too many clients, client request failed.");
2045             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
2046         }
2047
2048         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
2049             avahi_log_warn(__FILE__": Too many objects for client '%s', client request failed.", client->name);
2050             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
2051         }
2052
2053         i = avahi_new(AsyncHostNameResolverInfo, 1);
2054         i->id = ++client->current_id;
2055         i->client = client;
2056         i->path = avahi_strdup_printf("/Client%u/HostNameResolver%u", client->id, i->id);
2057         AVAHI_LLIST_PREPEND(AsyncHostNameResolverInfo, async_host_name_resolvers, client->async_host_name_resolvers, i);
2058         client->n_objects++;
2059
2060         if (!(i->host_name_resolver = avahi_s_host_name_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, name, aprotocol, async_host_name_resolver_callback, i))) {
2061             async_host_name_resolver_free(i);
2062             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
2063         }
2064
2065         dbus_connection_register_object_path(c, i->path, &vtable, i);
2066         return respond_path(c, m, i->path);
2067
2068     } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVER, "AddressResolverNew")) {
2069         Client *client;
2070         int32_t interface, protocol;
2071         char *address;
2072         AsyncAddressResolverInfo *i;
2073         AvahiAddress a;
2074         static const DBusObjectPathVTable vtable = {
2075             NULL,
2076             msg_async_address_resolver_impl,
2077             NULL,
2078             NULL,
2079             NULL,
2080             NULL
2081         };
2082
2083         if (!dbus_message_get_args(
2084                 m, &error,
2085                 DBUS_TYPE_INT32, &interface,
2086                 DBUS_TYPE_INT32, &protocol,
2087                 DBUS_TYPE_STRING, &address,
2088                 DBUS_TYPE_INVALID) || !address) {
2089             avahi_log_warn("Error parsing Server::AddressResolverNew message");
2090             goto fail;
2091         }
2092
2093         if (!avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a))
2094             return respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);
2095
2096         if (!(client = client_get(dbus_message_get_sender(m), TRUE))) {
2097             avahi_log_warn(__FILE__": Too many clients, client request failed.");
2098             return respond_error(c, m, AVAHI_ERR_TOO_MANY_CLIENTS, NULL);
2099         }
2100
2101         if (client->n_objects >= MAX_OBJECTS_PER_CLIENT) {
2102             avahi_log_warn(__FILE__": Too many objects for client '%s', client request failed.", client->name);
2103             return respond_error(c, m, AVAHI_ERR_TOO_MANY_OBJECTS, NULL);
2104         }
2105
2106         i = avahi_new(AsyncAddressResolverInfo, 1);
2107         i->id = ++client->current_id;
2108         i->client = client;
2109         i->path = avahi_strdup_printf("/Client%u/AddressResolver%u", client->id, i->id);
2110         AVAHI_LLIST_PREPEND(AsyncAddressResolverInfo, async_address_resolvers, client->async_address_resolvers, i);
2111         client->n_objects++;
2112
2113         if (!(i->address_resolver = avahi_s_address_resolver_new(avahi_server, (AvahiIfIndex) interface, (AvahiProtocol) protocol, &a, async_address_resolver_callback, i))) {
2114             async_address_resolver_free(i);
2115             return respond_error(c, m, avahi_server_errno(avahi_server), NULL);
2116         }
2117
2118         dbus_connection_register_object_path(c, i->path, &vtable, i);
2119         return respond_path(c, m, i->path);
2120     }
2121
2122     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
2123
2124 fail:
2125     if (dbus_error_is_set(&error))
2126         dbus_error_free(&error);
2127
2128     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
2129 }
2130
2131 void dbus_protocol_server_state_changed(AvahiServerState state) {
2132     DBusMessage *m;
2133     int32_t t;
2134
2135     if (!server)
2136         return;
2137
2138     m = dbus_message_new_signal(AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged");
2139     t = (int32_t) state;
2140     dbus_message_append_args(m, DBUS_TYPE_INT32, &t, DBUS_TYPE_INVALID);
2141     dbus_connection_send(server->bus, m, NULL);
2142     dbus_message_unref(m);
2143 }
2144
2145 int dbus_protocol_setup(const AvahiPoll *poll_api) {
2146     DBusError error;
2147
2148     static const DBusObjectPathVTable server_vtable = {
2149         NULL,
2150         msg_server_impl,
2151         NULL,
2152         NULL,
2153         NULL,
2154         NULL
2155     };
2156
2157     dbus_error_init(&error);
2158
2159     server = avahi_new(Server, 1);
2160     AVAHI_LLIST_HEAD_INIT(Clients, server->clients);
2161     server->current_id = 0;
2162     server->n_clients = 0;
2163
2164     if (!(server->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
2165         assert(dbus_error_is_set(&error));
2166         avahi_log_error("dbus_bus_get(): %s", error.message);
2167         goto fail;
2168     }
2169
2170     if (avahi_dbus_connection_glue(server->bus, poll_api) < 0) {
2171         avahi_log_error("avahi_dbus_connection_glue() failed");
2172         goto fail;
2173     }
2174
2175     if (dbus_bus_request_name(server->bus, AVAHI_DBUS_NAME, DBUS_NAME_FLAG_PROHIBIT_REPLACEMENT, &error) != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
2176         if (dbus_error_is_set(&error)) {
2177             avahi_log_error("dbus_bus_request_name(): %s", error.message);
2178             goto fail;
2179         }
2180
2181         avahi_log_error("Failed to acquire DBUS name '"AVAHI_DBUS_NAME"'");
2182         goto fail;
2183     }
2184
2185     if (!(dbus_connection_add_filter(server->bus, msg_signal_filter_impl, (void*) poll_api, NULL))) {
2186         avahi_log_error("dbus_connection_add_filter() failed");
2187         goto fail;
2188     }
2189
2190     dbus_bus_add_match(server->bus, "type='signal',""interface='" DBUS_INTERFACE_DBUS  "'", &error);
2191
2192     if (dbus_error_is_set(&error)) {
2193         avahi_log_error("dbus_bus_add_match(): %s", error.message);
2194         goto fail;
2195     }
2196
2197     if (!(dbus_connection_register_object_path(server->bus, AVAHI_DBUS_PATH_SERVER, &server_vtable, NULL))) {
2198         avahi_log_error("dbus_connection_register_object_path() failed");
2199         goto fail;
2200     }
2201
2202     return 0;
2203
2204 fail:
2205     if (server->bus) {
2206         dbus_connection_disconnect(server->bus);
2207         dbus_connection_unref(server->bus);
2208     }
2209
2210     if (dbus_error_is_set(&error))
2211         dbus_error_free(&error);
2212
2213     avahi_free(server);
2214     server = NULL;
2215     return -1;
2216 }
2217
2218 void dbus_protocol_shutdown(void) {
2219
2220     if (server) {
2221
2222         while (server->clients)
2223             client_free(server->clients);
2224
2225         assert(server->n_clients == 0);
2226
2227         if (server->bus) {
2228             dbus_connection_disconnect(server->bus);
2229             dbus_connection_unref(server->bus);
2230         }
2231
2232         avahi_free(server);
2233         server = NULL;
2234     }
2235 }