1 /*
2  * This is free and unencumbered software released into the public domain.
3  *
4  * Anyone is free to copy, modify, publish, use, compile, sell, or
5  * distribute this software, either in source code form or as a compiled
6  * binary, for any purpose, commercial or non-commercial, and by any
7  * means.
8  *
9  * In jurisdictions that recognize copyright laws, the author or authors
10  * of this software dedicate any and all copyright interest in the
11  * software to the public domain. We make this dedication for the benefit
12  * of the public at large and to the detriment of our heirs and
13  * successors. We intend this dedication to be an overt act of
14  * relinquishment in perpetuity of all present and future rights to this
15  * software under copyright law.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 struct tls;
27 
28 #define BIO_CHUNK	128
29 struct buf {
30 	uint8_t		*buf;
31 	size_t		 len;
32 	size_t		 cap;
33 	size_t		 cur;
34 };
35 
36 struct bufio {
37 	int		 fd;
38 	struct tls	*ctx;
39 	int		 wantev;
40 	struct buf	 wbuf;
41 	struct buf	 rbuf;
42 };
43 
44 #define	BUFIO_WANT_READ		0x1
45 #define	BUFIO_WANT_WRITE	0x2
46 
47 int	buf_init(struct buf *);
48 int	buf_has_line(struct buf *, const char *);
49 char	*buf_getdelim(struct buf *, const char *, size_t *);
50 void	buf_drain(struct buf *, size_t);
51 void	buf_drain_line(struct buf *, const char *);
52 void	buf_free(struct buf *);
53 
54 int	bufio_init(struct bufio *);
55 void	bufio_free(struct bufio *);
56 int	bufio_close(struct bufio *);
57 int	bufio_reset(struct bufio *);
58 void	bufio_set_fd(struct bufio *, int);
59 int	bufio_starttls(struct bufio *, const char *, int,
60 	    const uint8_t *, size_t, const uint8_t *, size_t);
61 int	bufio_ev(struct bufio *);
62 int	bufio_handshake(struct bufio *);
63 ssize_t	bufio_read(struct bufio *);
64 size_t	bufio_drain(struct bufio *, void *, size_t);
65 ssize_t	bufio_write(struct bufio *);
66 int	bufio_compose(struct bufio *, const void *, size_t);
67 int	bufio_compose_str(struct bufio *, const char *);
68 int	bufio_compose_fmt(struct bufio *, const char *, ...)
69 	    __attribute__((__format__ (printf, 2, 3)));
70 void	bufio_rewind_cursor(struct bufio *);
71 
72 /* callbacks for pdjson */
73 int	bufio_get_cb(void *);
74 int	bufio_peek_cb(void *);