1 63581804 2018-07-09 stsp /*
 2 63581804 2018-07-09 stsp  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
 3 63581804 2018-07-09 stsp  *
 4 63581804 2018-07-09 stsp  * Permission to use, copy, modify, and distribute this software for any
 5 63581804 2018-07-09 stsp  * purpose with or without fee is hereby granted, provided that the above
 6 63581804 2018-07-09 stsp  * copyright notice and this permission notice appear in all copies.
 7 63581804 2018-07-09 stsp  *
 8 63581804 2018-07-09 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 63581804 2018-07-09 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 63581804 2018-07-09 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 63581804 2018-07-09 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 63581804 2018-07-09 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 63581804 2018-07-09 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 63581804 2018-07-09 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 63581804 2018-07-09 stsp  */
16 63581804 2018-07-09 stsp 
17 23bc48a9 2019-03-19 stsp struct got_inflate_buf {
18 63581804 2018-07-09 stsp 	z_stream z;
19 63581804 2018-07-09 stsp 	char *inbuf;
20 63581804 2018-07-09 stsp 	size_t inlen;
21 63581804 2018-07-09 stsp 	char *outbuf;
22 63581804 2018-07-09 stsp 	size_t outlen;
23 63581804 2018-07-09 stsp 	int flags;
24 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_HAVE_MORE		0x01
25 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_OWN_OUTBUF	0x02
26 1e87a3c3 2020-03-18 stsp 	uint32_t *input_crc;
27 63581804 2018-07-09 stsp };
28 63581804 2018-07-09 stsp 
29 691332dd 2019-05-22 stsp #define GOT_INFLATE_BUFSIZE		32768
30 63581804 2018-07-09 stsp 
31 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_init(struct got_inflate_buf *, uint8_t *,
32 1e87a3c3 2020-03-18 stsp     size_t, uint32_t *);
33 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read(struct got_inflate_buf *, FILE *,
34 6fb3a497 2020-03-18 stsp     size_t *, size_t *);
35 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_fd(struct got_inflate_buf *, int,
36 3ab5e33c 2020-03-18 stsp     size_t *, size_t *);
37 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_mmap(struct got_inflate_buf *,
38 63581804 2018-07-09 stsp     uint8_t *, size_t, size_t, size_t *, size_t *);
39 23bc48a9 2019-03-19 stsp void got_inflate_end(struct got_inflate_buf *);
40 6fb3a497 2020-03-18 stsp const struct got_error *got_inflate_to_mem(uint8_t **, size_t *, size_t *,
41 6fb3a497 2020-03-18 stsp     FILE *);
42 3ab5e33c 2020-03-18 stsp const struct got_error *got_inflate_to_mem_fd(uint8_t **, size_t *, size_t *,
43 1e87a3c3 2020-03-18 stsp     uint32_t *, int);
44 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_mem_mmap(uint8_t **, size_t *, uint8_t *,
45 63581804 2018-07-09 stsp     size_t, size_t);
46 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_file(size_t *, FILE *, FILE *);
47 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_file_fd(size_t *, int, FILE *);
48 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_fd(size_t *, FILE *, int);
49 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_file_mmap(size_t *, uint8_t *, size_t,
50 63581804 2018-07-09 stsp     size_t, FILE *);