1 /*	$OpenBSD: ioev.h,v 1.17 2019/06/12 17:42:53 eric Exp $	*/
2 /*
3  * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 enum {
19 	IO_CONNECTED = 0, 	/* connection successful	*/
20 	IO_TLSREADY,		/* TLS started successfully	*/
21 	IO_TLSERROR,		/* XXX - needs more work	*/
22 	IO_DATAIN,		/* new data in input buffer	*/
23 	IO_LOWAT,		/* output queue running low	*/
24 	IO_DISCONNECTED,	/* error?			*/
25 	IO_TIMEOUT,		/* error?			*/
26 	IO_ERROR,		/* details?			*/
27 };
28 
29 #define IO_IN		0x01
30 #define IO_OUT		0x02
31 
32 /* From OpenNTPD-ish portable */
33 #if !defined(SA_LEN)
34 #define SA_LEN(x)     ((x)->sa_family == AF_INET6 ? \
35                         sizeof(struct sockaddr_in6) : \
36                         sizeof(struct sockaddr_in))
37 #endif
38 #ifndef __unused
39 #define __unused __attribute__((unused))
40 #endif
41 
42 struct io;
43 
44 void io_set_nonblocking(int);
45 void io_set_nolinger(int);
46 
47 struct io *io_new(void);
48 void io_free(struct io *);
49 void io_set_read(struct io *);
50 void io_set_write(struct io *);
51 void io_set_fd(struct io *, int);
52 void io_set_callback(struct io *io, void(*)(struct io *, int, void *), void *);
53 void io_set_timeout(struct io *, int);
54 void io_set_lowat(struct io *, size_t);
55 void io_pause(struct io *, int);
56 void io_resume(struct io *, int);
57 void io_reload(struct io *);
58 int io_connect(struct io *, const struct sockaddr *, const struct sockaddr *);
59 int io_start_tls(struct io *, void *);
60 const char* io_strio(struct io *);
61 const char* io_strevent(int);
62 const char* io_error(struct io *);
63 void* io_tls(struct io *);
64 int io_fileno(struct io *);
65 int io_paused(struct io *, int);
66 
67 /* Buffered output functions */
68 int io_write(struct io *, const void *, size_t);
69 int io_writev(struct io *, const struct iovec *, int);
70 int io_print(struct io *, const char *);
71 int io_printf(struct io *, const char *, ...);
72 int io_vprintf(struct io *, const char *, va_list);
73 size_t io_queued(struct io *);
74 
75 /* Buffered input functions */
76 void* io_data(struct io *);
77 size_t io_datalen(struct io *);
78 char* io_getline(struct io *, size_t *);
79 void io_drop(struct io *, size_t);