LADI
/
jackdbus
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
jackdbus/dbus/controller_iface_session_ma...

573 lines
17 KiB
C
Raw Permalink Blame History

/* -*- Mode: C ; c-basic-offset: 4 -*- */
/*
Copyright (C) 2011 Nedko Arnaudov
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <dbus/dbus.h>
#include "jackdbus.h"
#include "controller_internal.h"
#include "jack/session.h"
#include "jack/control.h"
#define JACK_DBUS_IFACE_NAME "org.jackaudio.SessionManager"
static
void
jack_controller_control_send_signal_session_state_changed(
jack_session_event_type_t type,
const char * target)
{
dbus_uint32_t u32;
u32 = type;
if (target == NULL)
{
target = "";
}
jack_dbus_send_signal(
JACK_CONTROLLER_OBJECT_PATH,
JACK_DBUS_IFACE_NAME,
"StateChanged",
DBUS_TYPE_UINT32,
&u32,
DBUS_TYPE_STRING,
&target,
DBUS_TYPE_INVALID);
}
static bool start_detached_thread(void * (* start_routine)(void *), void * arg)
{
int ret;
static pthread_attr_t attr;
pthread_t tid;
ret = pthread_attr_init(&attr);
if (ret != 0)
{
jack_error("pthread_attr_init() failed with %d", ret);
goto exit;
}
ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (ret != 0)
{
jack_error("pthread_attr_setdetachstate() failed with %d", ret);
goto destroy_attr;
}
ret = pthread_create(&tid, &attr, start_routine, arg);
if (ret != 0)
{
jack_error("pthread_create() failed with %d", ret);
goto destroy_attr;
}
jack_log("Detached thread %d created", (int)tid);
destroy_attr:
pthread_attr_destroy(&attr);
exit:
return ret == 0;
}
static void send_session_notify_reply(struct jack_session_pending_command * pending_cmd_ptr, jack_session_command_t * commands)
{
struct jack_dbus_method_call call;
const jack_session_command_t * cmd_ptr;
DBusMessageIter top_iter, array_iter, struct_iter;
dbus_uint32_t u32;
/* jack_dbus_error() wants call struct */
call.message = pending_cmd_ptr->message;
call.connection = pending_cmd_ptr->connection;
if (commands == NULL)
{
jack_dbus_error(&call, JACK_DBUS_ERROR_GENERIC, "jack_session_notify() failed");
goto send_reply;
}
jack_info("Session notify complete, commands follow:");
call.reply = dbus_message_new_method_return(pending_cmd_ptr->message);
if (call.reply == NULL)
{
goto oom;
}
dbus_message_iter_init_append(call.reply, &top_iter);
if (!dbus_message_iter_open_container(&top_iter, DBUS_TYPE_ARRAY, "(sssu)", &array_iter))
{
goto unref;
}
for (cmd_ptr = commands; cmd_ptr->uuid != NULL; cmd_ptr++)
{
if (!dbus_message_iter_open_container(&array_iter, DBUS_TYPE_STRUCT, NULL, &struct_iter))
{
goto close_array;
}
if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->uuid))
{
goto close_struct;
}
if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->client_name))
{
goto close_struct;
}
if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->command))
{
goto close_struct;
}
u32 = cmd_ptr->flags;
if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_UINT32, &u32))
{
goto close_struct;
}
jack_info("uuid='%s', client='%s', command='%s', flags=0x%"PRIX32, cmd_ptr->uuid, cmd_ptr->client_name, cmd_ptr->command, u32);
if (!dbus_message_iter_close_container(&array_iter, &struct_iter))
{
goto close_array;
}
}
jack_info("End of session commands.");
if (!dbus_message_iter_close_container(&top_iter, &array_iter))
{
goto unref;
}
goto send_reply;
close_struct:
dbus_message_iter_close_container(&array_iter, &struct_iter);
close_array:
dbus_message_iter_close_container(&top_iter, &array_iter);
unref:
dbus_message_unref(call.reply);
goto oom;
send_reply:
if (call.reply != NULL)
{
if (!dbus_connection_send(pending_cmd_ptr->connection, call.reply, NULL))
{
jack_error("Ran out of memory trying to queue method return");
}
dbus_connection_flush(pending_cmd_ptr->connection);
dbus_message_unref(call.reply);
}
else
{
oom:
jack_error("Ran out of memory trying to construct method return");
}
}
#define controller_ptr ((struct jack_controller *)context)
void * jack_controller_process_session_command_thread(void * context)
{
struct jack_session_pending_command * pending_cmd_ptr;
jack_session_command_t * commands;
jack_log("jack_controller_process_session_command_thread enter");
pthread_mutex_lock(&controller_ptr->lock);
loop:
/* get next command */
assert(!list_empty(&controller_ptr->session_pending_commands));
pending_cmd_ptr = list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings);
pthread_mutex_unlock(&controller_ptr->lock);
jack_info("Session notify initiated. target='%s', type=%d, path='%s'", pending_cmd_ptr->target, (int)pending_cmd_ptr->type, pending_cmd_ptr->path);
jack_controller_control_send_signal_session_state_changed(pending_cmd_ptr->type, pending_cmd_ptr->target);
commands = jack_session_notify(controller_ptr->client, pending_cmd_ptr->target, pending_cmd_ptr->type, pending_cmd_ptr->path);
send_session_notify_reply(pending_cmd_ptr, commands);
if (commands != NULL)
{
jack_session_commands_free(commands);
}
pthread_mutex_lock(&controller_ptr->lock);
/* keep state consistent by sending signal after to lock */
/* otherwise the main thread may receive not-to-be-queued request and fail */
jack_controller_control_send_signal_session_state_changed(0, NULL);
/* remove the head of the list (queue) */
assert(!list_empty(&controller_ptr->session_pending_commands));
assert(pending_cmd_ptr == list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings));
list_del(&pending_cmd_ptr->siblings);
/* command cleanup */
dbus_message_unref(pending_cmd_ptr->message);
dbus_connection_ref(pending_cmd_ptr->connection);
free(pending_cmd_ptr);
/* If there are more commands, process them. Otherwise - exit the thread */
if (!list_empty(&controller_ptr->session_pending_commands))
{
goto loop;
}
pthread_mutex_unlock(&controller_ptr->lock);
jack_log("jack_controller_process_session_command_thread exit");
return NULL;
}
#undef controller_ptr
#define controller_ptr ((struct jack_controller *)call->context)
static
void
jack_controller_dbus_session_notify(
struct jack_dbus_method_call * call)
{
dbus_bool_t queue;
const char * target;
dbus_uint32_t u32;
const char * path;
jack_session_event_type_t type;
struct jack_session_pending_command * cmd_ptr;
if (!controller_ptr->started)
{
jack_dbus_only_error(call, JACK_DBUS_ERROR_SERVER_NOT_RUNNING, "Can't execute method '%s' with stopped JACK server", call->method_name);
return;
}
if (!jack_dbus_get_method_args(
call,
DBUS_TYPE_BOOLEAN,
&queue,
DBUS_TYPE_STRING,
&target,
DBUS_TYPE_UINT32,
&u32,
DBUS_TYPE_STRING,
&path,
DBUS_TYPE_INVALID))
{
/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
return;
}
if (*target == 0)
{
target = NULL;
}
type = (jack_session_event_type_t)u32;
if (type != JackSessionSave &&
type != JackSessionSaveAndQuit &&
type != JackSessionSaveTemplate)
{
jack_dbus_error(call, JACK_DBUS_ERROR_INVALID_ARGS, "Invalid session event type %" PRIu32, u32);
return;
}
pthread_mutex_lock(&controller_ptr->lock);
if (list_empty(&controller_ptr->session_pending_commands))
{
if (!start_detached_thread(jack_controller_process_session_command_thread, controller_ptr))
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "Cannot start thread to process the command");
goto unlock;
}
jack_log("Session notify thread started");
}
else if (!queue)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "Busy");
goto unlock;
}
cmd_ptr = malloc(sizeof(struct jack_session_pending_command));
if (cmd_ptr == NULL)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "malloc() failed for jack_session_pending_command struct");
goto unlock;
}
cmd_ptr->message = dbus_message_ref(call->message);
call->message = NULL; /* mark that reply will be sent asynchronously */
cmd_ptr->connection = dbus_connection_ref(call->connection);
/* it is safe to use the retrieved pointers because we already made an additional message reference */
cmd_ptr->type = type;
cmd_ptr->target = target;
cmd_ptr->path = path;
list_add_tail(&cmd_ptr->siblings, &controller_ptr->session_pending_commands);
jack_log("Session notify scheduled. target='%s', type=%"PRIu32", path='%s'", target, u32, path);
unlock:
pthread_mutex_unlock(&controller_ptr->lock);
}
static
void
jack_controller_dbus_get_uuid_for_client_name(
struct jack_dbus_method_call * call)
{
const char * client_name;
char * client_uuid;
if (!jack_dbus_get_method_args(
call,
DBUS_TYPE_STRING,
&client_name,
DBUS_TYPE_INVALID))
{
/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
return;
}
client_uuid = jack_get_uuid_for_client_name(controller_ptr->client, client_name);
if (client_uuid == NULL)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_get_uuid_for_client_name(\"%s\") failed", client_name);
return;
}
jack_dbus_construct_method_return_single(call, DBUS_TYPE_STRING, (message_arg_t)(const char *)client_uuid);
free(client_uuid);
}
static
void
jack_controller_dbus_get_client_name_by_uuid(
struct jack_dbus_method_call * call)
{
const char * client_uuid;
char * client_name;
if (!jack_dbus_get_method_args(
call,
DBUS_TYPE_STRING,
&client_uuid,
DBUS_TYPE_INVALID))
{
/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
return;
}
client_name = jack_get_client_name_by_uuid(controller_ptr->client, client_uuid);
if (client_name == NULL)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_get_client_name_by_uuid(\"%s\") failed", client_uuid);
return;
}
jack_dbus_construct_method_return_single(call, DBUS_TYPE_STRING, (message_arg_t)(const char *)client_name);
free(client_name);
}
static
void
jack_controller_dbus_reserve_client_name(
struct jack_dbus_method_call * call)
{
int ret;
const char * client_name;
const char * client_uuid;
if (!jack_dbus_get_method_args(
call,
DBUS_TYPE_STRING,
&client_name,
DBUS_TYPE_STRING,
&client_uuid,
DBUS_TYPE_INVALID))
{
/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
return;
}
ret = jack_reserve_client_name(controller_ptr->client, client_name, client_uuid);
if (ret < 0)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_reserve_client_name(name=\"%s\", uuid=\"%s\") failed (%d)", client_name, client_uuid, ret);
return;
}
jack_dbus_construct_method_return_empty(call);
}
static
void
jack_controller_dbus_has_session_callback(
struct jack_dbus_method_call * call)
{
int ret;
const char * client_name;
message_arg_t retval;
if (!jack_dbus_get_method_args(
call,
DBUS_TYPE_STRING,
&client_name,
DBUS_TYPE_INVALID))
{
/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
return;
}
ret = jack_client_has_session_callback(controller_ptr->client, client_name);
if (ret < 0)
{
jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_client_has_session_callback(\"%s\") failed (%d)", client_name, ret);
return;
}
retval.boolean = ret;
jack_dbus_construct_method_return_single(call, DBUS_TYPE_BOOLEAN, retval);
}
static
void
jack_controller_dbus_get_session_state(
struct jack_dbus_method_call * call)
{
DBusMessageIter iter;
struct jack_session_pending_command * cmd_ptr;
const char * target;
dbus_uint32_t type;
bool append_failed;
call->reply = dbus_message_new_method_return(call->message);
if (call->reply == NULL)
{
goto oom;
}
dbus_message_iter_init_append(call->reply, &iter);
pthread_mutex_lock(&controller_ptr->lock);
if (list_empty(&controller_ptr->session_pending_commands))
{
type = 0;
target = "";
}
else
{
cmd_ptr = list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings);
type = (dbus_uint32_t)cmd_ptr->type;
target = cmd_ptr->target;
}
append_failed =
!dbus_message_iter_append_basic(&iter, DBUS_TYPE_UINT32, &type) ||
!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &target);
pthread_mutex_unlock(&controller_ptr->lock);
if (!append_failed)
{
return;
}
dbus_message_unref(call->reply);
call->reply = NULL;
oom:
jack_error("Ran out of memory trying to construct method return");
}
#undef controller_ptr
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(Notify)
JACK_DBUS_METHOD_ARGUMENT("queue", DBUS_TYPE_BOOLEAN_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("path", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("result", "a(sssu)", true)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetUuidForClientName)
JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, true)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetClientNameByUuid)
JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, true)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(ReserveClientName)
JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(HasSessionCallback)
JACK_DBUS_METHOD_ARGUMENT("client_name", DBUS_TYPE_STRING_AS_STRING, false)
JACK_DBUS_METHOD_ARGUMENT("has_session_callback", DBUS_TYPE_BOOLEAN_AS_STRING, true)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetState)
JACK_DBUS_METHOD_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING, true)
JACK_DBUS_METHOD_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING, true)
JACK_DBUS_METHOD_ARGUMENTS_END
JACK_DBUS_SIGNAL_ARGUMENTS_BEGIN(StateChanged)
JACK_DBUS_SIGNAL_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING)
JACK_DBUS_SIGNAL_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING)
JACK_DBUS_SIGNAL_ARGUMENTS_END
JACK_DBUS_METHODS_BEGIN
JACK_DBUS_METHOD_DESCRIBE(Notify, jack_controller_dbus_session_notify)
JACK_DBUS_METHOD_DESCRIBE(GetUuidForClientName, jack_controller_dbus_get_uuid_for_client_name)
JACK_DBUS_METHOD_DESCRIBE(GetClientNameByUuid, jack_controller_dbus_get_client_name_by_uuid)
JACK_DBUS_METHOD_DESCRIBE(ReserveClientName, jack_controller_dbus_reserve_client_name)
JACK_DBUS_METHOD_DESCRIBE(HasSessionCallback, jack_controller_dbus_has_session_callback)
JACK_DBUS_METHOD_DESCRIBE(GetState, jack_controller_dbus_get_session_state)
JACK_DBUS_METHODS_END
JACK_DBUS_SIGNALS_BEGIN
JACK_DBUS_SIGNAL_DESCRIBE(StateChanged)
JACK_DBUS_SIGNALS_END
JACK_DBUS_IFACE_BEGIN(g_jack_controller_iface_session_manager, JACK_DBUS_IFACE_NAME)
JACK_DBUS_IFACE_EXPOSE_METHODS
JACK_DBUS_IFACE_EXPOSE_SIGNALS
JACK_DBUS_IFACE_END
Reference in New Issue View Git Blame Copy Permalink