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/* $Id$ */
/***
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
USA.
***/
#ifdef HAVE_CONFIG_H
#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 "client.h"
#include "internal.h"
int
avahi_client_set_errno (AvahiClient *client, int error)
{
if (client == NULL) return error;
client->error = error;
return 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);
}
void
avahi_client_state_request_callback (DBusPendingCall *call, void *data)
{
AvahiClient *client = data;
DBusError error;
DBusMessage *reply;
int state, type;
dbus_error_init (&error);
reply = dbus_pending_call_steal_reply (call);
type = dbus_message_get_type (reply);
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);
}
dbus_pending_call_unref (call);
}
void
avahi_client_schedule_state_request (AvahiClient *client)
{
DBusMessage *message;
DBusPendingCall *pcall;
if (client == NULL) return;
message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
dbus_connection_send_with_reply (client->bus, message, &pcall, -1);
dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL);
}
static DBusHandlerResult
filter_func (DBusConnection *bus, DBusMessage *message, void *data)
{
AvahiClient *client = data;
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);
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;
}
if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
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 */
}
}
} else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
printf ("server statehcange\n");
} 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;
break;
}
}
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")) {
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")) {
return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
}
return DBUS_HANDLER_RESULT_HANDLED;
out:
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
AvahiClient *
avahi_client_new (AvahiClientCallback callback, void *user_data)
{
AvahiClient *tmp = NULL;
DBusError error;
dbus_error_init (&error);
if (!(tmp = malloc(sizeof(AvahiClient))))
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);
if (dbus_error_is_set (&error)) {
fprintf(stderr, "Error getting system d-bus: %s\n", error.message);
goto fail;
}
dbus_connection_setup_with_g_main (tmp->bus, NULL);
dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
{
fprintf (stderr, "Failed to add d-bus filter\n");
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);
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Error adding filter match: %s\n", error.message);
goto fail;
}
dbus_bus_add_match (tmp->bus,
"type='signal', "
"interface='" DBUS_INTERFACE_DBUS "', "
"sender='" DBUS_SERVICE_DBUS "', "
"path='" DBUS_PATH_DBUS "'",
&error);
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Error adding filter match: %s\n", error.message);
goto fail;
}
tmp->callback = callback;
tmp->user_data = user_data;
avahi_client_schedule_state_request (tmp);
avahi_client_set_errno (tmp, AVAHI_OK);
return tmp;
fail:
free (tmp);
if (dbus_error_is_set(&error))
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;
DBusError error;
char *ret, *new;
if (client == NULL || method == NULL) return NULL;
dbus_error_init (&error);
message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
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;
}
}
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);
avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
return NULL;
}
if (reply == NULL)
{
dbus_message_unref (message);
fprintf (stderr, "Could not connect to Avahi daemon\n");
avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
return NULL;
}
dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Failed to parse %s reply: %s\n", method, error.message);
dbus_error_free (&error);
avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
return NULL;
}
new = strdup (ret);
avahi_client_set_errno (client, AVAHI_OK);
return new;
}
char*
avahi_client_get_version_string (AvahiClient *client)
{
return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
}
char*
avahi_client_get_domain_name (AvahiClient *client)
{
return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
}
char*
avahi_client_get_host_name (AvahiClient *client)
{
return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
}
char*
avahi_client_get_host_name_fqdn (AvahiClient *client)
{
return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);
}
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