tvheadend/tcp.h

118 lines
3 KiB
C

/*
* tvheadend, TCP common functions
* Copyright (C) 2007 Andreas Öman
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef TCP_H_
#define TCP_H_
TAILQ_HEAD(tcp_data_queue, tcp_data);
typedef struct tcp_data {
TAILQ_ENTRY(tcp_data) td_link;
const void *td_data;
unsigned int td_datalen;
int td_offset;
} tcp_data_t;
typedef struct tcp_queue {
struct tcp_data_queue tq_messages;
int tq_depth;
int tq_maxdepth;
} tcp_queue_t;
typedef enum {
TCP_CONNECT,
TCP_DISCONNECT,
TCP_INPUT,
} tcpevent_t;
typedef void (tcp_callback_t)(tcpevent_t event, void *tcpsession);
typedef int (tcp_line_input_t)(void *tcpsession, char *line);
typedef struct tcpserver {
tcp_callback_t *tcp_callback;
int tcp_fd;
size_t tcp_session_size;
const char *tcp_server_name;
} tcp_server_t;
#define TCP_MAX_LINE_LEN 4000
typedef struct tcp_session {
void *tcp_dispatch_handle;
int tcp_fd;
struct sockaddr_storage tcp_peer_addr;
struct sockaddr_storage tcp_self_addr;
char tcp_peer_txt[100];
tcp_callback_t *tcp_callback;
tcp_server_t *tcp_server; /* if this is NULL, then we are spawned
as a client */
/* These are only used when we spawn as a client */
dtimer_t tcp_timer;
char *tcp_name;
int tcp_port;
char *tcp_hostname;
/* Output queueing */
int tcp_blocked;
tcp_queue_t tcp_q_hi;
tcp_queue_t tcp_q_low;
tcp_queue_t *tcp_q_current;
/* Input line parser */
int tcp_input_buf_ptr;
char tcp_input_buf[TCP_MAX_LINE_LEN];
} tcp_session_t;
void tcp_init_queue(tcp_queue_t *tq, int maxdepth);
void tcp_flush_queue(tcp_queue_t *tq);
void tcp_disconnect(tcp_session_t *ses, int err);
void tcp_create_server(int port, size_t session_size, const char *name,
tcp_callback_t *cb);
void tcp_line_read(tcp_session_t *ses, tcp_line_input_t *callback);
int tcp_line_drain(tcp_session_t *ses, void *buf, int n);
#define tcp_logname(ses) ((ses)->tcp_peer_txt)
int tcp_send_msg(tcp_session_t *ses, tcp_queue_t *tq, const void *data,
size_t len);
void tcp_printf(tcp_session_t *ses, const char *fmt, ...);
void tcp_qprintf(tcp_queue_t *tq, const char *fmt, ...);
void tcp_qvprintf(tcp_queue_t *tq, const char *fmt, va_list ap);
void tcp_qput(tcp_queue_t *tq, const uint8_t *buf, size_t len);
void tcp_output_queue(tcp_session_t *ses, tcp_queue_t *dst, tcp_queue_t *src);
void *tcp_create_client(const char *hostname, int port, size_t session_size,
const char *name, tcp_callback_t *cb);
#endif /* TCP_H_ */