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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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, or
* (at your option) any later version.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_CLIENT_INTERNAL_HXX
#define MPD_CLIENT_INTERNAL_HXX
#include "Client.hxx"
#include "ClientMessage.hxx"
#include "CommandListBuilder.hxx"
#include "command.h"
#include <set>
#include <string>
#include <deque>
#include <glib.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "client"
enum {
CLIENT_MAX_SUBSCRIPTIONS = 16,
CLIENT_MAX_MESSAGES = 64,
};
struct deferred_buffer {
size_t size;
char data[sizeof(long)];
};
class Client {
public:
struct player_control *player_control;
GIOChannel *channel;
guint source_id;
/** the buffer for reading lines from the #channel */
struct fifo_buffer *input;
unsigned permission;
/** the uid of the client process, or -1 if unknown */
int uid;
/**
* How long since the last activity from this client?
*/
GTimer *last_activity;
CommandListBuilder cmd_list;
GQueue *deferred_send; /* for output if client is slow */
size_t deferred_bytes; /* mem deferred_send consumes */
unsigned int num; /* client number */
char send_buf[16384];
size_t send_buf_used; /* bytes used this instance */
/** is this client waiting for an "idle" response? */
bool idle_waiting;
/** idle flags pending on this client, to be sent as soon as
the client enters "idle" */
unsigned idle_flags;
/** idle flags that the client wants to receive */
unsigned idle_subscriptions;
/**
* A list of channel names this client is subscribed to.
*/
std::set<std::string> subscriptions;
/**
* The number of subscriptions in #subscriptions. Used to
* limit the number of subscriptions.
*/
unsigned num_subscriptions;
/**
* A list of messages this client has received.
*/
std::deque<ClientMessage> messages;
Client(struct player_control *player_control,
int fd, int uid, int num);
~Client();
gcc_pure
bool IsSubscribed(const char *channel_name) const {
return subscriptions.find(channel_name) != subscriptions.end();
}
};
extern unsigned int client_max_connections;
extern int client_timeout;
extern size_t client_max_command_list_size;
extern size_t client_max_output_buffer_size;
bool
client_list_is_empty(void);
bool
client_list_is_full(void);
Client *
client_list_get_first(void);
void
client_list_add(Client *client);
void
client_list_foreach(GFunc func, gpointer user_data);
void
client_list_remove(Client *client);
void
client_close(Client *client);
void
client_set_expired(Client *client);
/**
* Schedule an "expired" check for all clients: permanently delete
* clients which have been set "expired" with client_set_expired().
*/
void
client_schedule_expire(void);
/**
* Removes a scheduled "expired" check.
*/
void
client_deinit_expire(void);
enum command_return
client_read(Client *client);
enum command_return
client_process_line(Client *client, char *line);
void
client_write_deferred(Client *client);
void
client_write_output(Client *client);
gboolean
client_in_event(GIOChannel *source, GIOCondition condition,
gpointer data);
#endif
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