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/* $OpenBSD: ioev.h,v 1.13 2016/11/24 20:52:13 eric Exp $ */
/*
* Copyright (c) 2012 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_TLSERROR, /* XXX - needs more work */
IO_DATAIN, /* new data in input buffer */
IO_LOWAT, /* output queue running low */
IO_DISCONNECTED, /* error? */
IO_TIMEOUT, /* error? */
IO_ERROR, /* details? */
};
#define IO_READ 0x01
#define IO_WRITE 0x02
#define IO_RW (IO_READ | IO_WRITE)
#define IO_PAUSE_IN 0x04
#define IO_PAUSE_OUT 0x08
#define IO_RESET 0x10 /* internal */
#define IO_HELD 0x20 /* internal */
struct iobuf;
struct io {
int sock;
void *arg;
void (*cb)(struct io*, int, void *);
struct iobuf *iobuf;
size_t lowat;
int timeout;
int flags;
int state;
struct event ev;
void *ssl;
const char *error; /* only valid immediately on callback */
};
void io_set_nonblocking(int);
void io_set_nolinger(int);
void io_init(struct io*, struct iobuf*);
void io_clear(struct io*);
void io_set_read(struct io *);
void io_set_write(struct io *);
void io_set_fd(struct io *, int);
void io_set_callback(struct io *io, void(*)(struct io *, int, void *), void *);
void io_set_timeout(struct io *, int);
void io_set_lowat(struct io *, size_t);
void io_pause(struct io *, int);
void io_resume(struct io *, int);
void io_reload(struct io *);
int io_connect(struct io *, const struct sockaddr *, const struct sockaddr *);
int io_start_tls(struct io *, void *);
const char* io_strio(struct io *);
const char* io_strevent(int);
const char* io_error(struct io *);
void* io_ssl(struct io *);
int io_fileno(struct io *);
/* Buffered output functions */
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 functions */
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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