118 lines
3 KiB
C
118 lines
3 KiB
C
/*
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* tvheadend, TCP common functions
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* Copyright (C) 2007 Andreas Öman
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TCP_H_
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#define TCP_H_
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TAILQ_HEAD(tcp_data_queue, tcp_data);
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typedef struct tcp_data {
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TAILQ_ENTRY(tcp_data) td_link;
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const void *td_data;
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unsigned int td_datalen;
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int td_offset;
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} tcp_data_t;
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typedef struct tcp_queue {
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struct tcp_data_queue tq_messages;
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int tq_depth;
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int tq_maxdepth;
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} tcp_queue_t;
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typedef enum {
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TCP_CONNECT,
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TCP_DISCONNECT,
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TCP_INPUT,
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} tcpevent_t;
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typedef void (tcp_callback_t)(tcpevent_t event, void *tcpsession);
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typedef int (tcp_line_input_t)(void *tcpsession, char *line);
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typedef struct tcpserver {
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tcp_callback_t *tcp_callback;
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int tcp_fd;
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size_t tcp_session_size;
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const char *tcp_server_name;
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} tcp_server_t;
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#define TCP_MAX_LINE_LEN 4000
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typedef struct tcp_session {
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void *tcp_dispatch_handle;
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int tcp_fd;
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struct sockaddr_storage tcp_peer_addr;
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struct sockaddr_storage tcp_self_addr;
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char tcp_peer_txt[100];
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tcp_callback_t *tcp_callback;
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tcp_server_t *tcp_server; /* if this is NULL, then we are spawned
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as a client */
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/* These are only used when we spawn as a client */
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dtimer_t tcp_timer;
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char *tcp_name;
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int tcp_port;
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char *tcp_hostname;
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/* Output queueing */
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int tcp_blocked;
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tcp_queue_t tcp_q_hi;
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tcp_queue_t tcp_q_low;
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tcp_queue_t *tcp_q_current;
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/* Input line parser */
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int tcp_input_buf_ptr;
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char tcp_input_buf[TCP_MAX_LINE_LEN];
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} tcp_session_t;
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void tcp_init_queue(tcp_queue_t *tq, int maxdepth);
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void tcp_flush_queue(tcp_queue_t *tq);
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void tcp_disconnect(tcp_session_t *ses, int err);
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void tcp_create_server(int port, size_t session_size, const char *name,
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tcp_callback_t *cb);
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void tcp_line_read(tcp_session_t *ses, tcp_line_input_t *callback);
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int tcp_line_drain(tcp_session_t *ses, void *buf, int n);
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#define tcp_logname(ses) ((ses)->tcp_peer_txt)
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int tcp_send_msg(tcp_session_t *ses, tcp_queue_t *tq, const void *data,
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size_t len);
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void tcp_printf(tcp_session_t *ses, const char *fmt, ...);
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void tcp_qprintf(tcp_queue_t *tq, const char *fmt, ...);
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void tcp_qvprintf(tcp_queue_t *tq, const char *fmt, va_list ap);
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void tcp_qput(tcp_queue_t *tq, const uint8_t *buf, size_t len);
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void tcp_output_queue(tcp_session_t *ses, tcp_queue_t *dst, tcp_queue_t *src);
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void *tcp_create_client(const char *hostname, int port, size_t session_size,
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const char *name, tcp_callback_t *cb);
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#endif /* TCP_H_ */
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