-/* $Id$ */
-
/***
This file is part of avahi.
-
+
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
-
+
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
#include <config.h>
#endif
-#include <avahi-client/client.h>
-#include <avahi-common/dbus.h>
-#include <avahi-common/llist.h>
-#include <avahi-common/error.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
-#define DBUS_API_SUBJECT_TO_CHANGE
#include <dbus/dbus.h>
-#include <dbus/dbus-glib-lowlevel.h>
-#include <stdlib.h>
+#include <avahi-common/dbus.h>
+#include <avahi-common/llist.h>
+#include <avahi-common/error.h>
+#include <avahi-common/dbus.h>
+#include <avahi-common/malloc.h>
+#include <avahi-common/dbus-watch-glue.h>
+#include <avahi-common/i18n.h>
#include "client.h"
#include "internal.h"
-int
-avahi_client_set_errno (AvahiClient *client, int error)
-{
- if (client == NULL) return error;
+#define AVAHI_CLIENT_DBUS_API_SUPPORTED ((uint32_t) 0x0201)
+
+static int init_server(AvahiClient *client, int *ret_error);
- client->error = error;
+int avahi_client_set_errno (AvahiClient *client, int error) {
+ assert(client);
- return error;
+ return client->error = error;
}
-
-static
-void avahi_client_state_change (AvahiClient *client, int state)
-{
- if (client == NULL || client->callback == NULL)
- return;
- client->callback (client, state, client->user_data);
+int avahi_client_set_dbus_error(AvahiClient *client, DBusError *error) {
+ assert(client);
+ assert(error);
+
+ return avahi_client_set_errno(client, avahi_error_dbus_to_number(error->name));
}
-void
-avahi_client_state_request_callback (DBusPendingCall *call, void *data)
-{
- AvahiClient *client = data;
- DBusError error;
- DBusMessage *reply;
- int state, type;
+static void client_set_state(AvahiClient *client, AvahiClientState state) {
+ assert(client);
- dbus_error_init (&error);
+ if (client->state == state)
+ return;
- reply = dbus_pending_call_steal_reply (call);
+ client->state = state;
- type = dbus_message_get_type (reply);
+ switch (client->state) {
+ case AVAHI_CLIENT_FAILURE:
+ if (client->bus) {
+#ifdef HAVE_DBUS_CONNECTION_CLOSE
+ dbus_connection_close(client->bus);
+#else
+ dbus_connection_disconnect(client->bus);
+#endif
+ dbus_connection_unref(client->bus);
+ client->bus = NULL;
+ }
- if (type == DBUS_MESSAGE_TYPE_METHOD_RETURN)
- {
- dbus_message_get_args (reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
-
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "internal error parsing client state change for client\n");
- return;
- }
-
- printf ("statechange (client) to %d\n", state);
-
- avahi_client_state_change (client, state);
- } else if (type == DBUS_MESSAGE_TYPE_ERROR) {
- dbus_set_error_from_message (&error, reply);
- fprintf (stderr, "Error from reply: %s\n", error.message);
- }
+ /* Fall through */
- dbus_pending_call_unref (call);
-}
+ case AVAHI_CLIENT_S_COLLISION:
+ case AVAHI_CLIENT_S_REGISTERING:
-void
-avahi_client_schedule_state_request (AvahiClient *client)
-{
- DBusMessage *message;
- DBusPendingCall *pcall;
+ /* Clear cached strings */
+ avahi_free(client->host_name);
+ avahi_free(client->host_name_fqdn);
+ avahi_free(client->domain_name);
- if (client == NULL) return;
+ client->host_name = NULL;
+ client->host_name_fqdn = NULL;
+ client->domain_name = NULL;
+ break;
- message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
+ case AVAHI_CLIENT_S_RUNNING:
+ case AVAHI_CLIENT_CONNECTING:
+ break;
- dbus_connection_send_with_reply (client->bus, message, &pcall, -1);
+ }
- dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL);
+ if (client->callback)
+ client->callback (client, state, client->userdata);
}
-static DBusHandlerResult
-filter_func (DBusConnection *bus, DBusMessage *message, void *data)
-{
- AvahiClient *client = data;
+static DBusHandlerResult filter_func(DBusConnection *bus, DBusMessage *message, void *userdata) {
+ AvahiClient *client = userdata;
DBusError error;
-
- printf ("dbus: interface=%s, path=%s, member=%s\n",
- dbus_message_get_interface (message),
- dbus_message_get_path (message),
- dbus_message_get_member (message));
- dbus_error_init (&error);
+ assert(bus);
+ assert(message);
+
+ dbus_error_init(&error);
+
+/* fprintf(stderr, "dbus: interface=%s, path=%s, member=%s\n", */
+/* dbus_message_get_interface (message), */
+/* dbus_message_get_path (message), */
+/* dbus_message_get_member (message)); */
+
+ if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
- if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
- gchar *name, *old, *new;
- dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
-
- if (dbus_error_is_set (&error)) {
- fprintf(stderr, "Failed to parse NameOwnerChanged message: %s", error.message);
- dbus_error_free (&error);
- goto out;
+ /* The DBUS server died or kicked us */
+ avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
+ goto fail;
+
+ } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameAcquired")) {
+
+ /* Ignore this message */
+
+ } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
+ char *name, *old, *new;
+
+ if (!dbus_message_get_args(
+ message, &error,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_STRING, &old,
+ DBUS_TYPE_STRING, &new,
+ DBUS_TYPE_INVALID) || dbus_error_is_set(&error)) {
+
+ fprintf(stderr, "WARNING: Failed to parse NameOwnerChanged signal: %s\n", error.message);
+ avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
+ goto fail;
}
- if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
+ if (strcmp(name, AVAHI_DBUS_NAME) == 0) {
+
+ if (old[0] &&
+ avahi_client_is_connected(client)) {
+
+ /* Regardless if the server lost its name or
+ * if the name was transfered: our services are no longer
+ * available, so we disconnect ourselves */
+ avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
+ goto fail;
+
+ } else if (client->state == AVAHI_CLIENT_CONNECTING && (!old || *old == 0)) {
+ int ret;
- if (old == NULL && new != NULL) {
- fprintf(stderr, "Avahi Daemon connected\n");
- avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED);
- } else if (old != NULL && new == NULL) {
- fprintf(stderr, "Avahi Daemon disconnected\n");
- avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED);
- /* XXX: we really need to expire all entry groups */
+ /* Server appeared */
+
+ if ((ret = init_server(client, NULL)) < 0) {
+ avahi_client_set_errno(client, ret);
+ goto fail;
+ }
}
}
- } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
- printf ("server statehcange\n");
+
+ } else if (!avahi_client_is_connected(client)) {
+
+ /* Ignore messages we get in unconnected state */
+
+ } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged")) {
+ int32_t state;
+ char *e = NULL;
+ int c;
+
+ if (!dbus_message_get_args(
+ message, &error,
+ DBUS_TYPE_INT32, &state,
+ DBUS_TYPE_STRING, &e,
+ DBUS_TYPE_INVALID) || dbus_error_is_set (&error)) {
+
+ fprintf(stderr, "WARNING: Failed to parse Server.StateChanged signal: %s\n", error.message);
+ avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
+ goto fail;
+ }
+
+ if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
+ avahi_client_set_errno(client, c);
+
+ client_set_state(client, (AvahiClientState) state);
+
} else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
const char *path;
- AvahiEntryGroup *n, *group = NULL;
- path = dbus_message_get_path (message);
-
- for (n = client->groups; n != NULL; n = n->groups_next)
- {
- if (strcmp (n->path, path) == 0)
- {
- group = n;
+ AvahiEntryGroup *g;
+ path = dbus_message_get_path(message);
+
+ for (g = client->groups; g; g = g->groups_next)
+ if (strcmp(g->path, path) == 0)
break;
+
+ if (g) {
+ int32_t state;
+ char *e;
+ int c;
+
+ if (!dbus_message_get_args(
+ message, &error,
+ DBUS_TYPE_INT32, &state,
+ DBUS_TYPE_STRING, &e,
+ DBUS_TYPE_INVALID) ||
+ dbus_error_is_set(&error)) {
+
+ fprintf(stderr, "WARNING: Failed to parse EntryGroup.StateChanged signal: %s\n", error.message);
+ avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
+ goto fail;
}
+
+ if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
+ avahi_client_set_errno(client, c);
+
+ avahi_entry_group_set_state(g, state);
}
-
- if (group == NULL)
- {
- fprintf (stderr, "Received state change for unknown EntryGroup object (%s)\n", path);
- } else {
- int state;
- DBusError error;
- dbus_error_init (&error);
- dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "internal error parsing entrygroup statechange for %s\n", group->path);
- goto out;
- }
- printf ("statechange (%s) to %d\n", group->path, state);
- avahi_entry_group_state_change (group, state);
- }
- } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
- return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
- } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
- return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
- } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
+
+ } else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew"))
+ return avahi_domain_browser_event(client, AVAHI_BROWSER_NEW, message);
+ else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove"))
+ return avahi_domain_browser_event(client, AVAHI_BROWSER_REMOVE, message);
+ else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "CacheExhausted"))
+ return avahi_domain_browser_event(client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
+ else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "AllForNow"))
+ return avahi_domain_browser_event(client, AVAHI_BROWSER_ALL_FOR_NOW, message);
+ else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Failure"))
+ return avahi_domain_browser_event(client, AVAHI_BROWSER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew"))
return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
- } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove"))
return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "CacheExhausted"))
+ return avahi_service_type_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "AllForNow"))
+ return avahi_service_type_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Failure"))
+ return avahi_service_type_browser_event (client, AVAHI_BROWSER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew"))
+ return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove"))
+ return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "CacheExhausted"))
+ return avahi_service_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "AllForNow"))
+ return avahi_service_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Failure"))
+ return avahi_service_browser_event (client, AVAHI_BROWSER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Found"))
+ return avahi_service_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Failure"))
+ return avahi_service_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Found"))
+ return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Failure"))
+ return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Found"))
+ return avahi_address_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Failure"))
+ return avahi_address_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
+
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemNew"))
+ return avahi_record_browser_event (client, AVAHI_BROWSER_NEW, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemRemove"))
+ return avahi_record_browser_event (client, AVAHI_BROWSER_REMOVE, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "CacheExhausted"))
+ return avahi_record_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "AllForNow"))
+ return avahi_record_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
+ else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Failure"))
+ return avahi_record_browser_event (client, AVAHI_BROWSER_FAILURE, message);
+
+ else {
+
+ fprintf(stderr, "WARNING: Unhandled message: interface=%s, path=%s, member=%s\n",
+ dbus_message_get_interface(message),
+ dbus_message_get_path(message),
+ dbus_message_get_member(message));
+
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
return DBUS_HANDLER_RESULT_HANDLED;
-out:
+fail:
+
+ if (dbus_error_is_set(&error)) {
+ avahi_client_set_errno(client, avahi_error_dbus_to_number(error.name));
+ dbus_error_free(&error);
+ }
+
+ client_set_state(client, AVAHI_CLIENT_FAILURE);
+
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
-AvahiClient *
-avahi_client_new (AvahiClientCallback callback, void *user_data)
-{
- AvahiClient *tmp = NULL;
+static int get_server_state(AvahiClient *client, int *ret_error) {
+ DBusMessage *message = NULL, *reply = NULL;
DBusError error;
+ int32_t state;
+ int e = AVAHI_ERR_NO_MEMORY;
- dbus_error_init (&error);
+ assert(client);
- if (!(tmp = malloc(sizeof(AvahiClient))))
+ dbus_error_init(&error);
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState")))
goto fail;
- AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
- AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, tmp->domain_browsers);
- AVAHI_LLIST_HEAD_INIT(AvahiServieTypeBrowser, tmp->service_type_browsers);
-
- tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
+ reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error))
+ goto fail;
- if (dbus_error_is_set (&error)) {
- fprintf(stderr, "Error getting system d-bus: %s\n", error.message);
+ if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error))
goto fail;
+
+ client_set_state(client, (AvahiClientState) state);
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ return AVAHI_OK;
+
+fail:
+ if (dbus_error_is_set(&error)) {
+ e = avahi_error_dbus_to_number (error.name);
+ dbus_error_free(&error);
}
- dbus_connection_setup_with_g_main (tmp->bus, NULL);
- dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
+ if (ret_error)
+ *ret_error = e;
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ return e;
+}
- if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
- {
- fprintf (stderr, "Failed to add d-bus filter\n");
+static int check_version(AvahiClient *client, int *ret_error) {
+ DBusMessage *message = NULL, *reply = NULL;
+ DBusError error;
+ uint32_t version;
+ int e = AVAHI_ERR_NO_MEMORY;
+
+ assert(client);
+
+ dbus_error_init(&error);
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetAPIVersion")))
goto fail;
+
+ reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error)) {
+ char *version_str;
+
+ if (!dbus_error_is_set(&error) || strcmp(error.name, DBUS_ERROR_UNKNOWN_METHOD))
+ goto fail;
+
+ /* If the method GetAPIVersion is not known, we look if
+ * GetVersionString matches "avahi 0.6" which is the only
+ * version we support which doesn't have GetAPIVersion() .*/
+
+ dbus_message_unref(message);
+ if (reply) dbus_message_unref(reply);
+ dbus_error_free(&error);
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetVersionString")))
+ goto fail;
+
+ reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error))
+ goto fail;
+
+ if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &version_str, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error))
+ goto fail;
+
+ version = strcmp(version_str, "avahi 0.6") == 0 ? 0x0201 : 0x0000;
+
+ } else {
+
+ if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &version, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set(&error))
+ goto fail;
}
- dbus_bus_add_match (tmp->bus,
- "type='signal', "
- "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
- "sender='" AVAHI_DBUS_NAME "', "
- "path='" AVAHI_DBUS_PATH_SERVER "'",
- &error);
+ /*fprintf(stderr, "API Version 0x%04x\n", version);*/
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "Error adding filter match: %s\n", error.message);
+ if ((version & 0xFF00) != (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0xFF00) ||
+ (version & 0x00FF) < (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0x00FF)) {
+ e = AVAHI_ERR_VERSION_MISMATCH;
goto fail;
+ }
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ return AVAHI_OK;
+
+fail:
+ if (dbus_error_is_set(&error)) {
+ e = avahi_error_dbus_to_number (error.name);
+ dbus_error_free(&error);
+ }
+
+ if (ret_error)
+ *ret_error = e;
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ return e;
+}
+
+static int init_server(AvahiClient *client, int *ret_error) {
+ int r;
+
+ if ((r = check_version(client, ret_error)) < 0)
+ return r;
+
+ if ((r = get_server_state(client, ret_error)) < 0)
+ return r;
+
+ return AVAHI_OK;
+}
+
+/* This function acts like dbus_bus_get but creates a private
+ * connection instead. */
+static DBusConnection* avahi_dbus_bus_get(DBusError *error) {
+ DBusConnection *c;
+
+#ifdef HAVE_DBUS_BUS_GET_PRIVATE
+ if (!(c = dbus_bus_get_private(DBUS_BUS_SYSTEM, error)))
+ return NULL;
- }
+ dbus_connection_set_exit_on_disconnect(c, FALSE);
+#else
+ const char *a;
- dbus_bus_add_match (tmp->bus,
- "type='signal', "
- "interface='" DBUS_INTERFACE_DBUS "', "
- "sender='" DBUS_SERVICE_DBUS "', "
- "path='" DBUS_PATH_DBUS "'",
- &error);
+ if (!(a = getenv("DBUS_SYSTEM_BUS_ADDRESS")) || !*a)
+ a = DBUS_SYSTEM_BUS_DEFAULT_ADDRESS;
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "Error adding filter match: %s\n", error.message);
+ if (!(c = dbus_connection_open_private(a, error)))
+ return NULL;
+
+ dbus_connection_set_exit_on_disconnect(c, FALSE);
+
+ if (!dbus_bus_register(c, error)) {
+#ifdef HAVE_DBUS_CONNECTION_CLOSE
+ dbus_connection_close(c);
+#else
+ dbus_connection_disconnect(c);
+#endif
+ dbus_connection_unref(c);
+ return NULL;
+ }
+#endif
+
+ return c;
+}
+
+AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags, AvahiClientCallback callback, void *userdata, int *ret_error) {
+ AvahiClient *client = NULL;
+ DBusError error;
+ DBusMessage *message = NULL, *reply = NULL;
+
+ avahi_init_i18n();
+
+ dbus_error_init(&error);
+
+ if (!(client = avahi_new(AvahiClient, 1))) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY;
+ goto fail;
+ }
+
+ client->poll_api = poll_api;
+ client->error = AVAHI_OK;
+ client->callback = callback;
+ client->userdata = userdata;
+ client->state = (AvahiClientState) -1;
+ client->flags = flags;
+
+ client->host_name = NULL;
+ client->host_name_fqdn = NULL;
+ client->domain_name = NULL;
+ client->version_string = NULL;
+ client->local_service_cookie_valid = 0;
+
+ AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
+ AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceResolver, client->service_resolvers);
+ AVAHI_LLIST_HEAD_INIT(AvahiHostNameResolver, client->host_name_resolvers);
+ AVAHI_LLIST_HEAD_INIT(AvahiAddressResolver, client->address_resolvers);
+ AVAHI_LLIST_HEAD_INIT(AvahiRecordBrowser, client->record_browsers);
+
+ if (!(client->bus = avahi_dbus_bus_get(&error)) || dbus_error_is_set(&error)) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_DBUS_ERROR;
+ goto fail;
+ }
+
+ if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
goto fail;
}
- tmp->callback = callback;
- tmp->user_data = user_data;
+ if (!dbus_connection_add_filter(client->bus, filter_func, client, NULL)) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY;
+ goto fail;
+ }
- avahi_client_schedule_state_request (tmp);
+ dbus_bus_add_match(
+ client->bus,
+ "type='signal', "
+ "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
+ "sender='" AVAHI_DBUS_NAME "', "
+ "path='" AVAHI_DBUS_PATH_SERVER "'",
+ &error);
- avahi_client_set_errno (tmp, AVAHI_OK);
- return tmp;
+ if (dbus_error_is_set(&error))
+ goto fail;
-fail:
- free (tmp);
+ dbus_bus_add_match (
+ client->bus,
+ "type='signal', "
+ "interface='" DBUS_INTERFACE_DBUS "', "
+ "sender='" DBUS_SERVICE_DBUS "', "
+ "path='" DBUS_PATH_DBUS "'",
+ &error);
+
+ if (dbus_error_is_set(&error))
+ goto fail;
+
+ dbus_bus_add_match(
+ client->bus,
+ "type='signal', "
+ "interface='" DBUS_INTERFACE_LOCAL "'",
+ &error);
if (dbus_error_is_set(&error))
+ goto fail;
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, "org.freedesktop.DBus.Peer", "Ping")))
+ goto fail;
+
+ reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error)) {
+ /* We free the error so its not set, that way the fail target
+ * will return the NO_DAEMON error rather than a DBUS error */
+ dbus_error_free(&error);
+
+ if (!(flags & AVAHI_CLIENT_NO_FAIL)) {
+
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_DAEMON;
+
+ goto fail;
+ }
+
+ /* The user doesn't want this call to fail if the daemon is not
+ * available, so let's return succesfully */
+ client_set_state(client, AVAHI_CLIENT_CONNECTING);
+
+ } else {
+
+ if (init_server(client, ret_error) < 0)
+ goto fail;
+ }
+
+ dbus_message_unref(message);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ return client;
+
+fail:
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (client)
+ avahi_client_free(client);
+
+ if (dbus_error_is_set(&error)) {
+
+ if (ret_error) {
+ if (strcmp(error.name, DBUS_ERROR_FILE_NOT_FOUND) == 0)
+ /* DBUS returns this error when the DBUS daemon is not running */
+ *ret_error = AVAHI_ERR_NO_DAEMON;
+ else
+ *ret_error = avahi_error_dbus_to_number(error.name);
+ }
+
dbus_error_free(&error);
-
+ }
+
return NULL;
}
-static char*
-avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param)
-{
- DBusMessage *message;
- DBusMessage *reply;
+void avahi_client_free(AvahiClient *client) {
+ assert(client);
+
+ if (client->bus)
+ /* Disconnect in advance, so that the free() functions won't
+ * issue needless server calls */
+#ifdef HAVE_DBUS_CONNECTION_CLOSE
+ dbus_connection_close(client->bus);
+#else
+ dbus_connection_disconnect(client->bus);
+#endif
+
+ while (client->groups)
+ avahi_entry_group_free(client->groups);
+
+ while (client->domain_browsers)
+ avahi_domain_browser_free(client->domain_browsers);
+
+ while (client->service_browsers)
+ avahi_service_browser_free(client->service_browsers);
+
+ while (client->service_type_browsers)
+ avahi_service_type_browser_free(client->service_type_browsers);
+
+ while (client->service_resolvers)
+ avahi_service_resolver_free(client->service_resolvers);
+
+ while (client->host_name_resolvers)
+ avahi_host_name_resolver_free(client->host_name_resolvers);
+
+ while (client->address_resolvers)
+ avahi_address_resolver_free(client->address_resolvers);
+
+ while (client->record_browsers)
+ avahi_record_browser_free(client->record_browsers);
+
+ if (client->bus)
+ dbus_connection_unref(client->bus);
+
+ avahi_free(client->version_string);
+ avahi_free(client->host_name);
+ avahi_free(client->host_name_fqdn);
+ avahi_free(client->domain_name);
+
+ avahi_free(client);
+}
+
+static char* avahi_client_get_string_reply_and_block (AvahiClient *client, const char *method, const char *param) {
+ DBusMessage *message = NULL, *reply = NULL;
DBusError error;
- char *ret, *new;
+ char *ret, *n;
- if (client == NULL || method == NULL) return NULL;
+ assert(client);
+ assert(method);
dbus_error_init (&error);
- message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
+ if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method))) {
+ avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
- if (param != NULL)
- {
- if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
- {
- avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
- fprintf (stderr, "Failed to append string argument to %s message\n", method);
- return NULL;
+ if (param) {
+ if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID)) {
+ avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
}
}
-
+
reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "Error sending %s message: %s\n", method, error.message);
- dbus_error_free (&error);
- dbus_message_unref (message);
+ if (!reply || dbus_error_is_set (&error))
+ goto fail;
+
+ if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error))
+ goto fail;
+
+ if (!(n = avahi_strdup(ret))) {
+ avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ return n;
+
+fail:
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (dbus_error_is_set(&error)) {
+ avahi_client_set_dbus_error(client, &error);
+ dbus_error_free(&error);
+ }
+
+ return NULL;
+}
- avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
+const char* avahi_client_get_version_string(AvahiClient *client) {
+ assert(client);
+
+ if (!avahi_client_is_connected(client)) {
+ avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
return NULL;
}
- if (reply == NULL)
- {
- dbus_message_unref (message);
- fprintf (stderr, "Could not connect to Avahi daemon\n");
+ if (!client->version_string)
+ client->version_string = avahi_client_get_string_reply_and_block(client, "GetVersionString", NULL);
+
+ return client->version_string;
+}
- avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
+const char* avahi_client_get_domain_name(AvahiClient *client) {
+ assert(client);
+
+ if (!avahi_client_is_connected(client)) {
+ avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
return NULL;
}
- dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
+ if (!client->domain_name)
+ client->domain_name = avahi_client_get_string_reply_and_block(client, "GetDomainName", NULL);
- if (dbus_error_is_set (&error))
- {
- fprintf (stderr, "Failed to parse %s reply: %s\n", method, error.message);
- dbus_error_free (&error);
+ return client->domain_name;
+}
- avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
+const char* avahi_client_get_host_name(AvahiClient *client) {
+ assert(client);
+
+ if (!avahi_client_is_connected(client)) {
+ avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
return NULL;
}
- new = strdup (ret);
+ if (!client->host_name)
+ client->host_name = avahi_client_get_string_reply_and_block(client, "GetHostName", NULL);
- avahi_client_set_errno (client, AVAHI_OK);
- return new;
+ return client->host_name;
}
-char*
-avahi_client_get_version_string (AvahiClient *client)
-{
- return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
+const char* avahi_client_get_host_name_fqdn (AvahiClient *client) {
+ assert(client);
+
+ if (!avahi_client_is_connected(client)) {
+ avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
+ return NULL;
+ }
+
+ if (!client->host_name_fqdn)
+ client->host_name_fqdn = avahi_client_get_string_reply_and_block(client, "GetHostNameFqdn", NULL);
+
+ return client->host_name_fqdn;
}
-char*
-avahi_client_get_domain_name (AvahiClient *client)
-{
- return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
+AvahiClientState avahi_client_get_state(AvahiClient *client) {
+ assert(client);
+
+ return client->state;
}
-char*
-avahi_client_get_host_name (AvahiClient *client)
-{
- return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
+int avahi_client_errno(AvahiClient *client) {
+ assert(client);
+
+ return client->error;
}
-char*
-avahi_client_get_host_name_fqdn (AvahiClient *client)
-{
- return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);
+/* Just for internal use */
+int avahi_client_simple_method_call(AvahiClient *client, const char *path, const char *interface, const char *method) {
+ DBusMessage *message = NULL, *reply = NULL;
+ DBusError error;
+ int r = AVAHI_OK;
+
+ dbus_error_init(&error);
+
+ assert(client);
+ assert(path);
+ assert(interface);
+ assert(method);
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, path, interface, method))) {
+ r = avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
+ dbus_error_is_set (&error)) {
+ r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
+ goto fail;
+ }
+
+ if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error)) {
+ r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
+ goto fail;
+ }
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ return AVAHI_OK;
+
+fail:
+ if (dbus_error_is_set(&error)) {
+ r = avahi_client_set_dbus_error(client, &error);
+ dbus_error_free(&error);
+ }
+
+ if (message)
+ dbus_message_unref(message);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ return r;
+}
+
+uint32_t avahi_client_get_local_service_cookie(AvahiClient *client) {
+ DBusMessage *message = NULL, *reply = NULL;
+ DBusError error;
+ assert(client);
+
+ if (!avahi_client_is_connected(client)) {
+ avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
+ return AVAHI_SERVICE_COOKIE_INVALID;
+ }
+
+ if (client->local_service_cookie_valid)
+ return client->local_service_cookie;
+
+ dbus_error_init (&error);
+
+ if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetLocalServiceCookie"))) {
+ avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error))
+ goto fail;
+
+ if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &client->local_service_cookie, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error))
+ goto fail;
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ client->local_service_cookie_valid = 1;
+ return client->local_service_cookie;
+
+fail:
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (dbus_error_is_set(&error)) {
+ avahi_client_set_dbus_error(client, &error);
+ dbus_error_free(&error);
+ }
+
+ return AVAHI_SERVICE_COOKIE_INVALID;
+}
+
+int avahi_client_is_connected(AvahiClient *client) {
+ assert(client);
+
+ return
+ client->bus &&
+ dbus_connection_get_is_connected(client->bus) &&
+ (client->state == AVAHI_CLIENT_S_RUNNING || client->state == AVAHI_CLIENT_S_REGISTERING || client->state == AVAHI_CLIENT_S_COLLISION);
+}
+
+int avahi_client_set_host_name(AvahiClient* client, const char *name) {
+ DBusMessage *message = NULL, *reply = NULL;
+ DBusError error;
+
+ assert(client);
+
+ if (!avahi_client_is_connected(client))
+ return avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
+
+ dbus_error_init (&error);
+
+ if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "SetHostName"))) {
+ avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ if (!dbus_message_append_args (message, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
+ avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error);
+
+ if (!reply || dbus_error_is_set (&error))
+ goto fail;
+
+ if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
+ dbus_error_is_set (&error))
+ goto fail;
+
+ dbus_message_unref(message);
+ dbus_message_unref(reply);
+
+ avahi_free(client->host_name);
+ client->host_name = NULL;
+ avahi_free(client->host_name_fqdn);
+ client->host_name_fqdn = NULL;
+
+ return 0;
+
+fail:
+
+ if (message)
+ dbus_message_unref(message);
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (dbus_error_is_set(&error)) {
+ avahi_client_set_dbus_error(client, &error);
+ dbus_error_free(&error);
+ }
+
+ return client->error;
}
projects / catta / blobdiff