2 2181e0c8 2019-03-19 stsp * Copyright (c) 2019 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 2181e0c8 2019-03-19 stsp #include <sys/queue.h>
19 2181e0c8 2019-03-19 stsp #include <errno.h>
20 2181e0c8 2019-03-19 stsp #include <stdio.h>
21 2181e0c8 2019-03-19 stsp #include <stdlib.h>
22 2181e0c8 2019-03-19 stsp #include <string.h>
23 2181e0c8 2019-03-19 stsp #include <sha1.h>
24 5822e79e 2023-02-23 op #include <sha2.h>
25 2181e0c8 2019-03-19 stsp #include <zlib.h>
26 2181e0c8 2019-03-19 stsp #include <time.h>
28 2181e0c8 2019-03-19 stsp #include "got_error.h"
29 2181e0c8 2019-03-19 stsp #include "got_object.h"
30 324d37e7 2019-05-11 stsp #include "got_path.h"
32 2181e0c8 2019-03-19 stsp #include "got_lib_deflate.h"
33 ae25a666 2023-02-23 op #include "got_lib_hash.h"
34 13b2bc37 2022-10-23 stsp #include "got_lib_poll.h"
37 2181e0c8 2019-03-19 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
40 2181e0c8 2019-03-19 stsp const struct got_error *
41 3b9e6fcf 2021-06-05 stsp got_deflate_init(struct got_deflate_buf *zb, uint8_t *outbuf, size_t bufsize)
43 2181e0c8 2019-03-19 stsp const struct got_error *err = NULL;
46 0fc5e229 2022-11-08 stsp memset(zb, 0, sizeof(*zb));
48 2181e0c8 2019-03-19 stsp zb->z.zalloc = Z_NULL;
49 2181e0c8 2019-03-19 stsp zb->z.zfree = Z_NULL;
50 2181e0c8 2019-03-19 stsp zerr = deflateInit(&zb->z, Z_DEFAULT_COMPRESSION);
51 2181e0c8 2019-03-19 stsp if (zerr != Z_OK) {
52 2181e0c8 2019-03-19 stsp if (zerr == Z_ERRNO)
53 638f9024 2019-05-13 stsp return got_error_from_errno("deflateInit");
54 2181e0c8 2019-03-19 stsp if (zerr == Z_MEM_ERROR) {
55 2181e0c8 2019-03-19 stsp errno = ENOMEM;
56 638f9024 2019-05-13 stsp return got_error_from_errno("deflateInit");
58 2181e0c8 2019-03-19 stsp return got_error(GOT_ERR_COMPRESSION);
61 2181e0c8 2019-03-19 stsp zb->inlen = zb->outlen = bufsize;
63 2181e0c8 2019-03-19 stsp zb->inbuf = calloc(1, zb->inlen);
64 2181e0c8 2019-03-19 stsp if (zb->inbuf == NULL) {
65 638f9024 2019-05-13 stsp err = got_error_from_errno("calloc");
69 2181e0c8 2019-03-19 stsp zb->flags = 0;
70 2181e0c8 2019-03-19 stsp if (outbuf == NULL) {
71 2181e0c8 2019-03-19 stsp zb->outbuf = calloc(1, zb->outlen);
72 2181e0c8 2019-03-19 stsp if (zb->outbuf == NULL) {
73 638f9024 2019-05-13 stsp err = got_error_from_errno("calloc");
76 2181e0c8 2019-03-19 stsp zb->flags |= GOT_DEFLATE_F_OWN_OUTBUF;
78 2181e0c8 2019-03-19 stsp zb->outbuf = outbuf;
81 2181e0c8 2019-03-19 stsp got_deflate_end(zb);
86 31e61ec1 2021-09-28 naddy csum_output(struct got_deflate_checksum *csum, const uint8_t *buf, size_t len)
88 91b40e30 2021-05-21 stsp if (csum->output_crc)
89 91b40e30 2021-05-21 stsp *csum->output_crc = crc32(*csum->output_crc, buf, len);
91 91b40e30 2021-05-21 stsp if (csum->output_sha1)
92 91b40e30 2021-05-21 stsp SHA1Update(csum->output_sha1, buf, len);
94 ae25a666 2023-02-23 op if (csum->output_ctx)
95 ae25a666 2023-02-23 op got_hash_update(csum->output_ctx, buf, len);
98 2181e0c8 2019-03-19 stsp const struct got_error *
99 72840534 2022-01-19 stsp got_deflate_read(struct got_deflate_buf *zb, FILE *f, off_t len,
100 72840534 2022-01-19 stsp size_t *outlenp, off_t *consumed)
102 2181e0c8 2019-03-19 stsp size_t last_total_out = zb->z.total_out;
103 2181e0c8 2019-03-19 stsp z_stream *z = &zb->z;
104 2181e0c8 2019-03-19 stsp int ret = Z_ERRNO;
106 2181e0c8 2019-03-19 stsp z->next_out = zb->outbuf;
107 2181e0c8 2019-03-19 stsp z->avail_out = zb->outlen;
109 2181e0c8 2019-03-19 stsp *outlenp = 0;
110 72840534 2022-01-19 stsp *consumed = 0;
112 72840534 2022-01-19 stsp size_t last_total_in = z->total_in;
113 2181e0c8 2019-03-19 stsp if (z->avail_in == 0) {
114 72840534 2022-01-19 stsp size_t n = 0;
115 72840534 2022-01-19 stsp if (*consumed < len) {
116 72840534 2022-01-19 stsp n = fread(zb->inbuf, 1,
117 72840534 2022-01-19 stsp MIN(zb->inlen, len - *consumed), f);
119 2181e0c8 2019-03-19 stsp if (n == 0) {
120 2181e0c8 2019-03-19 stsp if (ferror(f))
121 2181e0c8 2019-03-19 stsp return got_ferror(f, GOT_ERR_IO);
123 4e4a7005 2019-04-13 stsp ret = deflate(z, Z_FINISH);
126 2181e0c8 2019-03-19 stsp z->next_in = zb->inbuf;
127 2181e0c8 2019-03-19 stsp z->avail_in = n;
129 2181e0c8 2019-03-19 stsp ret = deflate(z, Z_NO_FLUSH);
130 72840534 2022-01-19 stsp *consumed += z->total_in - last_total_in;
131 2181e0c8 2019-03-19 stsp } while (ret == Z_OK && z->avail_out > 0);
133 2181e0c8 2019-03-19 stsp if (ret == Z_OK) {
134 2181e0c8 2019-03-19 stsp zb->flags |= GOT_DEFLATE_F_HAVE_MORE;
136 2181e0c8 2019-03-19 stsp if (ret != Z_STREAM_END)
137 2181e0c8 2019-03-19 stsp return got_error(GOT_ERR_COMPRESSION);
138 2181e0c8 2019-03-19 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
141 2181e0c8 2019-03-19 stsp *outlenp = z->total_out - last_total_out;
142 2181e0c8 2019-03-19 stsp return NULL;
145 2d9e6abf 2022-05-04 stsp static const struct got_error *
146 2d9e6abf 2022-05-04 stsp deflate_read_mmap(struct got_deflate_buf *zb, uint8_t *map, size_t offset,
147 2d9e6abf 2022-05-04 stsp size_t len, size_t *outlenp, size_t *consumed, int flush_on_eof)
149 64a8571e 2022-01-07 stsp z_stream *z = &zb->z;
150 64a8571e 2022-01-07 stsp size_t last_total_out = z->total_out;
151 64a8571e 2022-01-07 stsp int ret = Z_ERRNO;
153 64a8571e 2022-01-07 stsp z->next_out = zb->outbuf;
154 64a8571e 2022-01-07 stsp z->avail_out = zb->outlen;
156 64a8571e 2022-01-07 stsp *outlenp = 0;
157 64a8571e 2022-01-07 stsp *consumed = 0;
159 64a8571e 2022-01-07 stsp size_t last_total_in = z->total_in;
160 64a8571e 2022-01-07 stsp if (z->avail_in == 0) {
161 64a8571e 2022-01-07 stsp z->next_in = map + offset + *consumed;
162 a9bd296d 2022-02-08 stsp if (len - *consumed > UINT_MAX)
163 a9bd296d 2022-02-08 stsp z->avail_in = UINT_MAX;
165 a9bd296d 2022-02-08 stsp z->avail_in = len - *consumed;
166 64a8571e 2022-01-07 stsp if (z->avail_in == 0) {
168 2d9e6abf 2022-05-04 stsp if (flush_on_eof)
169 2d9e6abf 2022-05-04 stsp ret = deflate(z, Z_FINISH);
173 64a8571e 2022-01-07 stsp ret = deflate(z, Z_NO_FLUSH);
174 64a8571e 2022-01-07 stsp *consumed += z->total_in - last_total_in;
175 64a8571e 2022-01-07 stsp } while (ret == Z_OK && z->avail_out > 0);
177 64a8571e 2022-01-07 stsp if (ret == Z_OK) {
178 64a8571e 2022-01-07 stsp zb->flags |= GOT_DEFLATE_F_HAVE_MORE;
180 64a8571e 2022-01-07 stsp if (ret != Z_STREAM_END)
181 64a8571e 2022-01-07 stsp return got_error(GOT_ERR_COMPRESSION);
182 64a8571e 2022-01-07 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
185 64a8571e 2022-01-07 stsp *outlenp = z->total_out - last_total_out;
186 2d9e6abf 2022-05-04 stsp return NULL;
189 2d9e6abf 2022-05-04 stsp const struct got_error *
190 2d9e6abf 2022-05-04 stsp got_deflate_read_mmap(struct got_deflate_buf *zb, uint8_t *map, size_t offset,
191 2d9e6abf 2022-05-04 stsp size_t len, size_t *outlenp, size_t *consumed)
193 2d9e6abf 2022-05-04 stsp return deflate_read_mmap(zb, map, offset, len, outlenp, consumed, 1);
196 2d9e6abf 2022-05-04 stsp const struct got_error *
197 2d9e6abf 2022-05-04 stsp got_deflate_flush(struct got_deflate_buf *zb, FILE *outfile,
198 2d9e6abf 2022-05-04 stsp struct got_deflate_checksum *csum, off_t *outlenp)
202 2d9e6abf 2022-05-04 stsp z_stream *z = &zb->z;
204 2d9e6abf 2022-05-04 stsp if (z->avail_in != 0)
205 2d9e6abf 2022-05-04 stsp return got_error_msg(GOT_ERR_COMPRESSION,
206 2d9e6abf 2022-05-04 stsp "cannot flush zb with pending input data");
209 2d9e6abf 2022-05-04 stsp size_t avail, last_total_out = zb->z.total_out;
211 2d9e6abf 2022-05-04 stsp z->next_out = zb->outbuf;
212 2d9e6abf 2022-05-04 stsp z->avail_out = zb->outlen;
214 2d9e6abf 2022-05-04 stsp ret = deflate(z, Z_FINISH);
215 2d9e6abf 2022-05-04 stsp if (ret != Z_STREAM_END && ret != Z_OK)
216 2d9e6abf 2022-05-04 stsp return got_error(GOT_ERR_COMPRESSION);
218 2d9e6abf 2022-05-04 stsp avail = z->total_out - last_total_out;
219 2d9e6abf 2022-05-04 stsp if (avail > 0) {
220 2d9e6abf 2022-05-04 stsp n = fwrite(zb->outbuf, avail, 1, outfile);
221 2d9e6abf 2022-05-04 stsp if (n != 1)
222 2d9e6abf 2022-05-04 stsp return got_ferror(outfile, GOT_ERR_IO);
224 2d9e6abf 2022-05-04 stsp csum_output(csum, zb->outbuf, avail);
225 2d9e6abf 2022-05-04 stsp if (outlenp)
226 2d9e6abf 2022-05-04 stsp *outlenp += avail;
228 2d9e6abf 2022-05-04 stsp } while (ret != Z_STREAM_END);
230 2d9e6abf 2022-05-04 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
231 64a8571e 2022-01-07 stsp return NULL;
235 2181e0c8 2019-03-19 stsp got_deflate_end(struct got_deflate_buf *zb)
237 2181e0c8 2019-03-19 stsp free(zb->inbuf);
238 2181e0c8 2019-03-19 stsp if (zb->flags & GOT_DEFLATE_F_OWN_OUTBUF)
239 2181e0c8 2019-03-19 stsp free(zb->outbuf);
240 2181e0c8 2019-03-19 stsp deflateEnd(&zb->z);
243 894e4711 2022-10-15 stsp const struct got_error *
244 894e4711 2022-10-15 stsp got_deflate_to_fd(off_t *outlen, FILE *infile, off_t len, int outfd,
245 894e4711 2022-10-15 stsp struct got_deflate_checksum *csum)
247 894e4711 2022-10-15 stsp const struct got_error *err;
248 894e4711 2022-10-15 stsp size_t avail;
249 894e4711 2022-10-15 stsp off_t consumed;
250 894e4711 2022-10-15 stsp struct got_deflate_buf zb;
252 894e4711 2022-10-15 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
256 894e4711 2022-10-15 stsp *outlen = 0;
259 894e4711 2022-10-15 stsp err = got_deflate_read(&zb, infile, len, &avail, &consumed);
262 894e4711 2022-10-15 stsp len -= consumed;
263 894e4711 2022-10-15 stsp if (avail > 0) {
264 13b2bc37 2022-10-23 stsp err = got_poll_write_full(outfd, zb.outbuf, avail);
268 894e4711 2022-10-15 stsp csum_output(csum, zb.outbuf, avail);
269 894e4711 2022-10-15 stsp *outlen += avail;
271 894e4711 2022-10-15 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
274 894e4711 2022-10-15 stsp got_deflate_end(&zb);
275 894e4711 2022-10-15 stsp return err;
278 894e4711 2022-10-15 stsp const struct got_error *
279 894e4711 2022-10-15 stsp got_deflate_to_fd_mmap(off_t *outlen, uint8_t *map, size_t offset,
280 894e4711 2022-10-15 stsp size_t len, int outfd, struct got_deflate_checksum *csum)
282 894e4711 2022-10-15 stsp const struct got_error *err;
283 894e4711 2022-10-15 stsp size_t avail, consumed;
284 894e4711 2022-10-15 stsp struct got_deflate_buf zb;
286 894e4711 2022-10-15 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
290 894e4711 2022-10-15 stsp *outlen = 0;
292 894e4711 2022-10-15 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
293 894e4711 2022-10-15 stsp &consumed);
296 894e4711 2022-10-15 stsp offset += consumed;
297 894e4711 2022-10-15 stsp len -= consumed;
298 894e4711 2022-10-15 stsp if (avail > 0) {
299 13b2bc37 2022-10-23 stsp err = got_poll_write_full(outfd, zb.outbuf, avail);
303 894e4711 2022-10-15 stsp csum_output(csum, zb.outbuf, avail);
304 894e4711 2022-10-15 stsp *outlen += avail;
306 894e4711 2022-10-15 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
309 894e4711 2022-10-15 stsp got_deflate_end(&zb);
310 894e4711 2022-10-15 stsp return err;
313 2181e0c8 2019-03-19 stsp const struct got_error *
314 72840534 2022-01-19 stsp got_deflate_to_file(off_t *outlen, FILE *infile, off_t len,
315 72840534 2022-01-19 stsp FILE *outfile, struct got_deflate_checksum *csum)
317 2181e0c8 2019-03-19 stsp const struct got_error *err;
318 2181e0c8 2019-03-19 stsp size_t avail;
319 72840534 2022-01-19 stsp off_t consumed;
320 2181e0c8 2019-03-19 stsp struct got_deflate_buf zb;
322 3b9e6fcf 2021-06-05 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
326 2181e0c8 2019-03-19 stsp *outlen = 0;
329 72840534 2022-01-19 stsp err = got_deflate_read(&zb, infile, len, &avail, &consumed);
332 72840534 2022-01-19 stsp len -= consumed;
333 2181e0c8 2019-03-19 stsp if (avail > 0) {
335 2181e0c8 2019-03-19 stsp n = fwrite(zb.outbuf, avail, 1, outfile);
336 2181e0c8 2019-03-19 stsp if (n != 1) {
337 2181e0c8 2019-03-19 stsp err = got_ferror(outfile, GOT_ERR_IO);
341 3b9e6fcf 2021-06-05 stsp csum_output(csum, zb.outbuf, avail);
342 2181e0c8 2019-03-19 stsp *outlen += avail;
344 2181e0c8 2019-03-19 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
347 2181e0c8 2019-03-19 stsp got_deflate_end(&zb);
348 2181e0c8 2019-03-19 stsp return err;
351 64a8571e 2022-01-07 stsp const struct got_error *
352 72840534 2022-01-19 stsp got_deflate_to_file_mmap(off_t *outlen, uint8_t *map, size_t offset,
353 64a8571e 2022-01-07 stsp size_t len, FILE *outfile, struct got_deflate_checksum *csum)
355 64a8571e 2022-01-07 stsp const struct got_error *err;
356 64a8571e 2022-01-07 stsp size_t avail, consumed;
357 64a8571e 2022-01-07 stsp struct got_deflate_buf zb;
359 64a8571e 2022-01-07 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
363 64a8571e 2022-01-07 stsp *outlen = 0;
365 64a8571e 2022-01-07 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
366 64a8571e 2022-01-07 stsp &consumed);
369 64a8571e 2022-01-07 stsp offset += consumed;
370 64a8571e 2022-01-07 stsp len -= consumed;
371 64a8571e 2022-01-07 stsp if (avail > 0) {
373 64a8571e 2022-01-07 stsp n = fwrite(zb.outbuf, avail, 1, outfile);
374 64a8571e 2022-01-07 stsp if (n != 1) {
375 64a8571e 2022-01-07 stsp err = got_ferror(outfile, GOT_ERR_IO);
379 64a8571e 2022-01-07 stsp csum_output(csum, zb.outbuf, avail);
380 64a8571e 2022-01-07 stsp *outlen += avail;
382 64a8571e 2022-01-07 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
385 2d9e6abf 2022-05-04 stsp got_deflate_end(&zb);
386 2d9e6abf 2022-05-04 stsp return err;
389 2d9e6abf 2022-05-04 stsp const struct got_error *
390 2d9e6abf 2022-05-04 stsp got_deflate_append_to_file_mmap(struct got_deflate_buf *zb, off_t *outlen,
391 2d9e6abf 2022-05-04 stsp uint8_t *map, size_t offset, size_t len, FILE *outfile,
392 2d9e6abf 2022-05-04 stsp struct got_deflate_checksum *csum)
394 2d9e6abf 2022-05-04 stsp const struct got_error *err;
395 2d9e6abf 2022-05-04 stsp size_t avail, consumed;
398 2d9e6abf 2022-05-04 stsp err = deflate_read_mmap(zb, map, offset, len, &avail,
399 2d9e6abf 2022-05-04 stsp &consumed, 0);
402 2d9e6abf 2022-05-04 stsp offset += consumed;
403 2d9e6abf 2022-05-04 stsp len -= consumed;
404 2d9e6abf 2022-05-04 stsp if (avail > 0) {
406 2d9e6abf 2022-05-04 stsp n = fwrite(zb->outbuf, avail, 1, outfile);
407 2d9e6abf 2022-05-04 stsp if (n != 1) {
408 2d9e6abf 2022-05-04 stsp err = got_ferror(outfile, GOT_ERR_IO);
412 2d9e6abf 2022-05-04 stsp csum_output(csum, zb->outbuf, avail);
413 2d9e6abf 2022-05-04 stsp if (outlen)
414 2d9e6abf 2022-05-04 stsp *outlen += avail;
416 2d9e6abf 2022-05-04 stsp } while ((zb->flags & GOT_DEFLATE_F_HAVE_MORE) && len > 0);
418 2d9e6abf 2022-05-04 stsp return err;
421 2d9e6abf 2022-05-04 stsp const struct got_error *
422 2d9e6abf 2022-05-04 stsp got_deflate_to_mem_mmap(uint8_t **outbuf, size_t *outlen,
423 2d9e6abf 2022-05-04 stsp size_t *consumed_total, struct got_deflate_checksum *csum, uint8_t *map,
424 2d9e6abf 2022-05-04 stsp size_t offset, size_t len)
426 2d9e6abf 2022-05-04 stsp const struct got_error *err;
427 2d9e6abf 2022-05-04 stsp size_t avail, consumed;
428 2d9e6abf 2022-05-04 stsp struct got_deflate_buf zb;
429 2d9e6abf 2022-05-04 stsp void *newbuf;
430 2d9e6abf 2022-05-04 stsp size_t nbuf = 1;
432 2d9e6abf 2022-05-04 stsp if (outbuf) {
433 2d9e6abf 2022-05-04 stsp *outbuf = malloc(GOT_DEFLATE_BUFSIZE);
434 2d9e6abf 2022-05-04 stsp if (*outbuf == NULL)
435 2d9e6abf 2022-05-04 stsp return got_error_from_errno("malloc");
436 2d9e6abf 2022-05-04 stsp err = got_deflate_init(&zb, *outbuf, GOT_DEFLATE_BUFSIZE);
438 2d9e6abf 2022-05-04 stsp free(*outbuf);
439 2d9e6abf 2022-05-04 stsp *outbuf = NULL;
440 2d9e6abf 2022-05-04 stsp return err;
443 2d9e6abf 2022-05-04 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
445 2d9e6abf 2022-05-04 stsp return err;
448 2d9e6abf 2022-05-04 stsp *outlen = 0;
449 2d9e6abf 2022-05-04 stsp if (consumed_total)
450 2d9e6abf 2022-05-04 stsp *consumed_total = 0;
452 2d9e6abf 2022-05-04 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
453 2d9e6abf 2022-05-04 stsp &consumed);
456 2d9e6abf 2022-05-04 stsp offset += consumed;
457 2d9e6abf 2022-05-04 stsp if (consumed_total)
458 2d9e6abf 2022-05-04 stsp *consumed_total += consumed;
459 2d9e6abf 2022-05-04 stsp len -= consumed;
460 2d9e6abf 2022-05-04 stsp if (avail > 0 && csum)
461 2d9e6abf 2022-05-04 stsp csum_output(csum, zb.outbuf, avail);
462 2d9e6abf 2022-05-04 stsp *outlen += avail;
463 2d9e6abf 2022-05-04 stsp if ((zb.flags & GOT_DEFLATE_F_HAVE_MORE) && outbuf != NULL) {
464 2d9e6abf 2022-05-04 stsp newbuf = reallocarray(*outbuf, ++nbuf,
465 2d9e6abf 2022-05-04 stsp GOT_DEFLATE_BUFSIZE);
466 2d9e6abf 2022-05-04 stsp if (newbuf == NULL) {
467 2d9e6abf 2022-05-04 stsp err = got_error_from_errno("reallocarray");
468 2d9e6abf 2022-05-04 stsp free(*outbuf);
469 2d9e6abf 2022-05-04 stsp *outbuf = NULL;
470 2d9e6abf 2022-05-04 stsp *outlen = 0;
473 2d9e6abf 2022-05-04 stsp *outbuf = newbuf;
474 2d9e6abf 2022-05-04 stsp zb.outbuf = newbuf + *outlen;
475 2d9e6abf 2022-05-04 stsp zb.outlen = (nbuf * GOT_DEFLATE_BUFSIZE) - *outlen;
477 2d9e6abf 2022-05-04 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
479 64a8571e 2022-01-07 stsp got_deflate_end(&zb);
480 64a8571e 2022-01-07 stsp return err;