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/* $OpenBSD: io.h,v 1.1 2018/04/27 16:14:36 eric Exp $ */
/*
* Copyright (c) 2017 Eric Faurot <eric@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <event.h>
enum {
IO_CONNECTED = 0, /* connection successful */
IO_TLSREADY, /* TLS started successfully */
IO_DATAIN, /* new data in input buffer */
IO_LOWAT, /* output queue running low */
IO_CLOSED, /* normally terminated */
IO_DISCONNECTED, /* error? */
IO_TIMEOUT, /* error? */
IO_ERROR, /* details? */
IO_TLSERROR, /* XXX - needs more work */
};
#define IO_IN 0x1
#define IO_OUT 0x2
struct io;
void io_trace(int);
const char* io_strio(struct io *);
const char* io_strevent(int);
/* IO management */
struct io *io_new(void);
void io_free(struct io *);
/* IO setup */
int io_set_callback(struct io *, void(*)(struct io *, int, void *), void *);
int io_set_bindaddr(struct io *, const struct sockaddr *);
int io_set_bufsize(struct io *, size_t);
void io_set_timeout(struct io *, int);
void io_set_lowat(struct io *, size_t);
/* State retreival */
const char *io_error(struct io *);
int io_fileno(struct io *);
/* Connection management */
int io_attach(struct io *io, int);
int io_detach(struct io *io);
int io_close(struct io *io);
int io_connect(struct io *, struct addrinfo *);
int io_disconnect(struct io *io);
int io_starttls(struct io *, void *);
/* Flow control */
void io_pause(struct io *, int);
void io_resume(struct io *, int);
/* IO direction */
void io_set_read(struct io *);
void io_set_write(struct io *);
/* Output buffering */
int io_write(struct io *, const void *, size_t);
int io_writev(struct io *, const struct iovec *, int);
int io_print(struct io *, const char *);
int io_printf(struct io *, const char *, ...);
int io_vprintf(struct io *, const char *, va_list);
size_t io_queued(struct io *);
/* Buffered input */
void * io_data(struct io *);
size_t io_datalen(struct io *);
char * io_getline(struct io *, size_t *);
void io_drop(struct io *, size_t);
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