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 6ad68bce 2020-03-24 stsp 	/* If not NULL, mix input bytes into this SHA1 context. */
22 6ad68bce 2020-03-24 stsp 	SHA1_CTX *input_sha1;
23 6ad68bce 2020-03-24 stsp };
24 6ad68bce 2020-03-24 stsp 
25 23bc48a9 2019-03-19 stsp struct got_inflate_buf {
26 63581804 2018-07-09 stsp 	z_stream z;
27 63581804 2018-07-09 stsp 	char *inbuf;
28 63581804 2018-07-09 stsp 	size_t inlen;
29 63581804 2018-07-09 stsp 	char *outbuf;
30 63581804 2018-07-09 stsp 	size_t outlen;
31 63581804 2018-07-09 stsp 	int flags;
32 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_HAVE_MORE		0x01
33 23bc48a9 2019-03-19 stsp #define GOT_INFLATE_F_OWN_OUTBUF	0x02
34 6ad68bce 2020-03-24 stsp 	struct got_inflate_checksum *csum;
35 63581804 2018-07-09 stsp };
36 63581804 2018-07-09 stsp 
37 691332dd 2019-05-22 stsp #define GOT_INFLATE_BUFSIZE		32768
38 63581804 2018-07-09 stsp 
39 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_init(struct got_inflate_buf *, uint8_t *,
40 6ad68bce 2020-03-24 stsp     size_t, struct got_inflate_checksum *);
41 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read(struct got_inflate_buf *, FILE *,
42 6fb3a497 2020-03-18 stsp     size_t *, size_t *);
43 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_fd(struct got_inflate_buf *, int,
44 3ab5e33c 2020-03-18 stsp     size_t *, size_t *);
45 23bc48a9 2019-03-19 stsp const struct got_error *got_inflate_read_mmap(struct got_inflate_buf *,
46 63581804 2018-07-09 stsp     uint8_t *, size_t, size_t, size_t *, size_t *);
47 23bc48a9 2019-03-19 stsp void got_inflate_end(struct got_inflate_buf *);
48 6fb3a497 2020-03-18 stsp const struct got_error *got_inflate_to_mem(uint8_t **, size_t *, size_t *,
49 6fb3a497 2020-03-18 stsp     FILE *);
50 3ab5e33c 2020-03-18 stsp const struct got_error *got_inflate_to_mem_fd(uint8_t **, size_t *, size_t *,
51 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, size_t, int);
52 2e5a6fad 2020-03-18 stsp const struct got_error *got_inflate_to_mem_mmap(uint8_t **, size_t *, size_t *,
53 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, uint8_t *, size_t, size_t);
54 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_file(size_t *, FILE *, FILE *);
55 6ad68bce 2020-03-24 stsp const struct got_error *got_inflate_to_file_fd(size_t *, size_t *,
56 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, int, FILE *);
57 63581804 2018-07-09 stsp const struct got_error *got_inflate_to_fd(size_t *, FILE *, int);
58 4788f1ce 2020-03-18 stsp const struct got_error *got_inflate_to_file_mmap(size_t *, size_t *,
59 6ad68bce 2020-03-24 stsp     struct got_inflate_checksum *, uint8_t *, size_t, size_t, FILE *);