1 2181e0c8 2019-03-19 stsp /*
 2 2181e0c8 2019-03-19 stsp  * Copyright (c) 2019 Stefan Sperling <stsp@openbsd.org>
 3 2181e0c8 2019-03-19 stsp  *
 4 2181e0c8 2019-03-19 stsp  * Permission to use, copy, modify, and distribute this software for any
 5 2181e0c8 2019-03-19 stsp  * purpose with or without fee is hereby granted, provided that the above
 6 2181e0c8 2019-03-19 stsp  * copyright notice and this permission notice appear in all copies.
 7 2181e0c8 2019-03-19 stsp  *
 8 2181e0c8 2019-03-19 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 2181e0c8 2019-03-19 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 2181e0c8 2019-03-19 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 2181e0c8 2019-03-19 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 2181e0c8 2019-03-19 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 2181e0c8 2019-03-19 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 2181e0c8 2019-03-19 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 2181e0c8 2019-03-19 stsp  */
16 2181e0c8 2019-03-19 stsp 
17 91b40e30 2021-05-21 stsp struct got_deflate_checksum {
18 91b40e30 2021-05-21 stsp 	/* If not NULL, mix output bytes into this CRC checksum. */
19 91b40e30 2021-05-21 stsp 	uint32_t *output_crc;
20 91b40e30 2021-05-21 stsp 
21 b16893ba 2023-02-24 thomas 	/* If not NULL, mix output bytes into this hash context. */
22 b16893ba 2023-02-24 thomas 	struct got_hash *output_ctx;
23 91b40e30 2021-05-21 stsp };
24 91b40e30 2021-05-21 stsp 
25 2181e0c8 2019-03-19 stsp struct got_deflate_buf {
26 2181e0c8 2019-03-19 stsp 	z_stream z;
27 dbaa2362 2021-09-28 thomas 	uint8_t *inbuf;
28 2181e0c8 2019-03-19 stsp 	size_t inlen;
29 dbaa2362 2021-09-28 thomas 	uint8_t *outbuf;
30 2181e0c8 2019-03-19 stsp 	size_t outlen;
31 2181e0c8 2019-03-19 stsp 	int flags;
32 2181e0c8 2019-03-19 stsp #define GOT_DEFLATE_F_HAVE_MORE		0x01
33 2181e0c8 2019-03-19 stsp #define GOT_DEFLATE_F_OWN_OUTBUF	0x02
34 2181e0c8 2019-03-19 stsp };
35 2181e0c8 2019-03-19 stsp 
36 2181e0c8 2019-03-19 stsp #define GOT_DEFLATE_BUFSIZE		8192
37 2181e0c8 2019-03-19 stsp 
38 2181e0c8 2019-03-19 stsp const struct got_error *got_deflate_init(struct got_deflate_buf *, uint8_t *,
39 3b9e6fcf 2021-06-05 stsp     size_t);
40 2181e0c8 2019-03-19 stsp const struct got_error *got_deflate_read(struct got_deflate_buf *, FILE *,
41 e8f02263 2022-01-23 thomas     off_t, size_t *, off_t *);
42 9249e7e3 2022-05-12 thomas const struct got_error *got_deflate_read_mmap(struct got_deflate_buf *,
43 9249e7e3 2022-05-12 thomas     uint8_t *, size_t, size_t, size_t *, size_t *);
44 2181e0c8 2019-03-19 stsp void got_deflate_end(struct got_deflate_buf *);
45 20a7d452 2022-10-16 thomas const struct got_error *got_deflate_to_fd(off_t *, FILE *, off_t, int,
46 20a7d452 2022-10-16 thomas     struct got_deflate_checksum *);
47 20a7d452 2022-10-16 thomas const struct got_error *got_deflate_to_fd_mmap(off_t *, uint8_t *,
48 20a7d452 2022-10-16 thomas     size_t, size_t, int, struct got_deflate_checksum *);
49 e8f02263 2022-01-23 thomas const struct got_error *got_deflate_to_file(off_t *, FILE *, off_t, FILE *,
50 91b40e30 2021-05-21 stsp     struct got_deflate_checksum *);
51 e8f02263 2022-01-23 thomas const struct got_error *got_deflate_to_file_mmap(off_t *, uint8_t *,
52 2b0ae357 2022-01-10 thomas     size_t, size_t, FILE *, struct got_deflate_checksum *);
53 9249e7e3 2022-05-12 thomas const struct got_error *got_deflate_flush(struct got_deflate_buf *, FILE *,
54 9249e7e3 2022-05-12 thomas     struct got_deflate_checksum *, off_t *);
55 9249e7e3 2022-05-12 thomas const struct got_error *got_deflate_append_to_file_mmap(
56 9249e7e3 2022-05-12 thomas     struct got_deflate_buf *, off_t *, uint8_t *, size_t, size_t, FILE *,
57 9249e7e3 2022-05-12 thomas     struct got_deflate_checksum *);
58 9249e7e3 2022-05-12 thomas const struct got_error *got_deflate_to_mem_mmap(uint8_t **, size_t *, size_t *,
59 9249e7e3 2022-05-12 thomas     struct got_deflate_checksum *, uint8_t *, size_t, size_t);