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 6ad68bce 2020-03-24 stsp struct got_inflate_checksum {
18 6ad68bce 2020-03-24 stsp 	/* If not NULL, mix input bytes into this CRC checksum. */
19 6ad68bce 2020-03-24 stsp 	uint32_t *input_crc;
20 6ad68bce 2020-03-24 stsp 
21 ae25a666 2023-02-23 op 	/* if not NULL, mix input bytes into this hash context. */
22 ae25a666 2023-02-23 op 	struct got_hash *input_ctx;
23 ae25a666 2023-02-23 op 
24 d5c81d44 2021-07-08 stsp 	/* If not NULL, mix output bytes into this CRC checksum. */
25 d5c81d44 2021-07-08 stsp 	uint32_t *output_crc;
26 d5c81d44 2021-07-08 stsp 
27 ae25a666 2023-02-23 op 	/* If not NULL, mix output bytes into this hash context. */
28 ae25a666 2023-02-23 op 	struct got_hash *output_ctx;
29 6ad68bce 2020-03-24 stsp };
30 6ad68bce 2020-03-24 stsp 
31 23bc48a9 2019-03-19 stsp struct got_inflate_buf {
32 63581804 2018-07-09 stsp 	z_stream z;
33 31e61ec1 2021-09-28 naddy 	uint8_t *inbuf;
34 63581804 2018-07-09 stsp 	size_t inlen;
35 31e61ec1 2021-09-28 naddy 	uint8_t *outbuf;
36 63581804 2018-07-09 stsp 	size_t outlen;
37 63581804 2018-07-09 stsp 	int flags;
38 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_HAVE_MORE		0x01
39 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_OWN_OUTBUF	0x02
40 6ad68bce 2020-03-24 stsp 	struct got_inflate_checksum *csum;
41 63581804 2018-07-09 stsp };
42 63581804 2018-07-09 stsp 
43 691332dd 2019-05-22 stsp #define GOT_INFLATE_BUFSIZE		32768
44 63581804 2018-07-09 stsp 
45 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_init(struct got_inflate_buf *, uint8_t *,
46 6ad68bce 2020-03-24 stsp     size_t, struct got_inflate_checksum *);
47 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read(struct got_inflate_buf *, FILE *,
48 6fb3a497 2020-03-18 stsp     size_t *, size_t *);
49 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_fd(struct got_inflate_buf *, int,
50 3ab5e33c 2020-03-18 stsp     size_t *, size_t *);
51 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_mmap(struct got_inflate_buf *,
52 63581804 2018-07-09 stsp     uint8_t *, size_t, size_t, size_t *, size_t *);
53 23bc48a9 2019-03-19 stsp void got_inflate_end(struct got_inflate_buf *);
54 6fb3a497 2020-03-18 stsp const struct got_error *got_inflate_to_mem(uint8_t **, size_t *, size_t *,
55 12f2167a 2021-07-04 stsp     struct got_inflate_checksum *, FILE *);
56 3ab5e33c 2020-03-18 stsp const struct got_error *got_inflate_to_mem_fd(uint8_t **, size_t *, size_t *,
57 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, size_t, int);
58 2e5a6fad 2020-03-18 stsp const struct got_error *got_inflate_to_mem_mmap(uint8_t **, size_t *, size_t *,
59 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, uint8_t *, size_t, size_t);
60 12f2167a 2021-07-04 stsp const struct got_error *got_inflate_to_file(size_t *, FILE *,
61 12f2167a 2021-07-04 stsp     struct got_inflate_checksum *, FILE *);
62 6ad68bce 2020-03-24 stsp const struct got_error *got_inflate_to_file_fd(size_t *, size_t *,
63 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, int, FILE *);
64 12f2167a 2021-07-04 stsp const struct got_error *got_inflate_to_fd(size_t *, FILE *,
65 12f2167a 2021-07-04 stsp     struct got_inflate_checksum *, int);
66 4788f1ce 2020-03-18 stsp const struct got_error *got_inflate_to_file_mmap(size_t *, size_t *,
67 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, uint8_t *, size_t, size_t, FILE *);