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 d71015b3 2023-09-01 stsp static const struct got_error *
41 d71015b3 2023-09-01 stsp wrap_deflate_error(int zerr, const char *prefix)
43 d71015b3 2023-09-01 stsp if (zerr == Z_ERRNO)
44 d71015b3 2023-09-01 stsp return got_error_from_errno(prefix);
45 d71015b3 2023-09-01 stsp if (zerr == Z_MEM_ERROR)
46 d71015b3 2023-09-01 stsp return got_error_set_errno(ENOMEM, prefix);
48 d71015b3 2023-09-01 stsp return got_error(GOT_ERR_COMPRESSION);
51 2181e0c8 2019-03-19 stsp const struct got_error *
52 3b9e6fcf 2021-06-05 stsp got_deflate_init(struct got_deflate_buf *zb, uint8_t *outbuf, size_t bufsize)
54 2181e0c8 2019-03-19 stsp const struct got_error *err = NULL;
57 0fc5e229 2022-11-08 stsp memset(zb, 0, sizeof(*zb));
59 2181e0c8 2019-03-19 stsp zb->z.zalloc = Z_NULL;
60 2181e0c8 2019-03-19 stsp zb->z.zfree = Z_NULL;
61 2181e0c8 2019-03-19 stsp zerr = deflateInit(&zb->z, Z_DEFAULT_COMPRESSION);
62 d71015b3 2023-09-01 stsp if (zerr != Z_OK)
63 d71015b3 2023-09-01 stsp return wrap_deflate_error(zerr, "deflateInit");
65 2181e0c8 2019-03-19 stsp zb->inlen = zb->outlen = bufsize;
67 2181e0c8 2019-03-19 stsp zb->inbuf = calloc(1, zb->inlen);
68 2181e0c8 2019-03-19 stsp if (zb->inbuf == NULL) {
69 638f9024 2019-05-13 stsp err = got_error_from_errno("calloc");
73 2181e0c8 2019-03-19 stsp zb->flags = 0;
74 2181e0c8 2019-03-19 stsp if (outbuf == NULL) {
75 2181e0c8 2019-03-19 stsp zb->outbuf = calloc(1, zb->outlen);
76 2181e0c8 2019-03-19 stsp if (zb->outbuf == NULL) {
77 638f9024 2019-05-13 stsp err = got_error_from_errno("calloc");
80 2181e0c8 2019-03-19 stsp zb->flags |= GOT_DEFLATE_F_OWN_OUTBUF;
82 2181e0c8 2019-03-19 stsp zb->outbuf = outbuf;
85 2181e0c8 2019-03-19 stsp got_deflate_end(zb);
90 31e61ec1 2021-09-28 naddy csum_output(struct got_deflate_checksum *csum, const uint8_t *buf, size_t len)
92 91b40e30 2021-05-21 stsp if (csum->output_crc)
93 91b40e30 2021-05-21 stsp *csum->output_crc = crc32(*csum->output_crc, buf, len);
95 ae25a666 2023-02-23 op if (csum->output_ctx)
96 ae25a666 2023-02-23 op got_hash_update(csum->output_ctx, buf, len);
99 2181e0c8 2019-03-19 stsp const struct got_error *
100 72840534 2022-01-19 stsp got_deflate_read(struct got_deflate_buf *zb, FILE *f, off_t len,
101 72840534 2022-01-19 stsp size_t *outlenp, off_t *consumed)
103 2181e0c8 2019-03-19 stsp size_t last_total_out = zb->z.total_out;
104 2181e0c8 2019-03-19 stsp z_stream *z = &zb->z;
105 2181e0c8 2019-03-19 stsp int ret = Z_ERRNO;
107 2181e0c8 2019-03-19 stsp z->next_out = zb->outbuf;
108 2181e0c8 2019-03-19 stsp z->avail_out = zb->outlen;
110 2181e0c8 2019-03-19 stsp *outlenp = 0;
111 72840534 2022-01-19 stsp *consumed = 0;
113 72840534 2022-01-19 stsp size_t last_total_in = z->total_in;
114 2181e0c8 2019-03-19 stsp if (z->avail_in == 0) {
115 72840534 2022-01-19 stsp size_t n = 0;
116 72840534 2022-01-19 stsp if (*consumed < len) {
117 72840534 2022-01-19 stsp n = fread(zb->inbuf, 1,
118 72840534 2022-01-19 stsp MIN(zb->inlen, len - *consumed), f);
120 2181e0c8 2019-03-19 stsp if (n == 0) {
121 2181e0c8 2019-03-19 stsp if (ferror(f))
122 2181e0c8 2019-03-19 stsp return got_ferror(f, GOT_ERR_IO);
124 4e4a7005 2019-04-13 stsp ret = deflate(z, Z_FINISH);
127 2181e0c8 2019-03-19 stsp z->next_in = zb->inbuf;
128 2181e0c8 2019-03-19 stsp z->avail_in = n;
130 2181e0c8 2019-03-19 stsp ret = deflate(z, Z_NO_FLUSH);
131 72840534 2022-01-19 stsp *consumed += z->total_in - last_total_in;
132 2181e0c8 2019-03-19 stsp } while (ret == Z_OK && z->avail_out > 0);
134 2181e0c8 2019-03-19 stsp if (ret == Z_OK) {
135 2181e0c8 2019-03-19 stsp zb->flags |= GOT_DEFLATE_F_HAVE_MORE;
137 2181e0c8 2019-03-19 stsp if (ret != Z_STREAM_END)
138 d71015b3 2023-09-01 stsp return wrap_deflate_error(ret, "deflate");
139 2181e0c8 2019-03-19 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
142 2181e0c8 2019-03-19 stsp *outlenp = z->total_out - last_total_out;
143 2181e0c8 2019-03-19 stsp return NULL;
146 2d9e6abf 2022-05-04 stsp static const struct got_error *
147 2d9e6abf 2022-05-04 stsp deflate_read_mmap(struct got_deflate_buf *zb, uint8_t *map, size_t offset,
148 2d9e6abf 2022-05-04 stsp size_t len, size_t *outlenp, size_t *consumed, int flush_on_eof)
150 64a8571e 2022-01-07 stsp z_stream *z = &zb->z;
151 64a8571e 2022-01-07 stsp size_t last_total_out = z->total_out;
152 64a8571e 2022-01-07 stsp int ret = Z_ERRNO;
154 64a8571e 2022-01-07 stsp z->next_out = zb->outbuf;
155 64a8571e 2022-01-07 stsp z->avail_out = zb->outlen;
157 64a8571e 2022-01-07 stsp *outlenp = 0;
158 64a8571e 2022-01-07 stsp *consumed = 0;
160 64a8571e 2022-01-07 stsp size_t last_total_in = z->total_in;
161 64a8571e 2022-01-07 stsp if (z->avail_in == 0) {
162 64a8571e 2022-01-07 stsp z->next_in = map + offset + *consumed;
163 a9bd296d 2022-02-08 stsp if (len - *consumed > UINT_MAX)
164 a9bd296d 2022-02-08 stsp z->avail_in = UINT_MAX;
166 a9bd296d 2022-02-08 stsp z->avail_in = len - *consumed;
167 64a8571e 2022-01-07 stsp if (z->avail_in == 0) {
169 2d9e6abf 2022-05-04 stsp if (flush_on_eof)
170 2d9e6abf 2022-05-04 stsp ret = deflate(z, Z_FINISH);
174 64a8571e 2022-01-07 stsp ret = deflate(z, Z_NO_FLUSH);
175 64a8571e 2022-01-07 stsp *consumed += z->total_in - last_total_in;
176 64a8571e 2022-01-07 stsp } while (ret == Z_OK && z->avail_out > 0);
178 64a8571e 2022-01-07 stsp if (ret == Z_OK) {
179 64a8571e 2022-01-07 stsp zb->flags |= GOT_DEFLATE_F_HAVE_MORE;
181 64a8571e 2022-01-07 stsp if (ret != Z_STREAM_END)
182 d71015b3 2023-09-01 stsp return wrap_deflate_error(ret, "deflate");
183 64a8571e 2022-01-07 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
186 64a8571e 2022-01-07 stsp *outlenp = z->total_out - last_total_out;
187 2d9e6abf 2022-05-04 stsp return NULL;
190 2d9e6abf 2022-05-04 stsp const struct got_error *
191 2d9e6abf 2022-05-04 stsp got_deflate_read_mmap(struct got_deflate_buf *zb, uint8_t *map, size_t offset,
192 2d9e6abf 2022-05-04 stsp size_t len, size_t *outlenp, size_t *consumed)
194 2d9e6abf 2022-05-04 stsp return deflate_read_mmap(zb, map, offset, len, outlenp, consumed, 1);
197 2d9e6abf 2022-05-04 stsp const struct got_error *
198 2d9e6abf 2022-05-04 stsp got_deflate_flush(struct got_deflate_buf *zb, FILE *outfile,
199 2d9e6abf 2022-05-04 stsp struct got_deflate_checksum *csum, off_t *outlenp)
203 2d9e6abf 2022-05-04 stsp z_stream *z = &zb->z;
205 2d9e6abf 2022-05-04 stsp if (z->avail_in != 0)
206 2d9e6abf 2022-05-04 stsp return got_error_msg(GOT_ERR_COMPRESSION,
207 2d9e6abf 2022-05-04 stsp "cannot flush zb with pending input data");
210 2d9e6abf 2022-05-04 stsp size_t avail, last_total_out = zb->z.total_out;
212 2d9e6abf 2022-05-04 stsp z->next_out = zb->outbuf;
213 2d9e6abf 2022-05-04 stsp z->avail_out = zb->outlen;
215 2d9e6abf 2022-05-04 stsp ret = deflate(z, Z_FINISH);
216 2d9e6abf 2022-05-04 stsp if (ret != Z_STREAM_END && ret != Z_OK)
217 d71015b3 2023-09-01 stsp return wrap_deflate_error(ret, "deflate");
219 2d9e6abf 2022-05-04 stsp avail = z->total_out - last_total_out;
220 2d9e6abf 2022-05-04 stsp if (avail > 0) {
221 2d9e6abf 2022-05-04 stsp n = fwrite(zb->outbuf, avail, 1, outfile);
222 2d9e6abf 2022-05-04 stsp if (n != 1)
223 2d9e6abf 2022-05-04 stsp return got_ferror(outfile, GOT_ERR_IO);
225 2d9e6abf 2022-05-04 stsp csum_output(csum, zb->outbuf, avail);
226 2d9e6abf 2022-05-04 stsp if (outlenp)
227 2d9e6abf 2022-05-04 stsp *outlenp += avail;
229 2d9e6abf 2022-05-04 stsp } while (ret != Z_STREAM_END);
231 2d9e6abf 2022-05-04 stsp zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;
232 64a8571e 2022-01-07 stsp return NULL;
236 2181e0c8 2019-03-19 stsp got_deflate_end(struct got_deflate_buf *zb)
238 2181e0c8 2019-03-19 stsp free(zb->inbuf);
239 2181e0c8 2019-03-19 stsp if (zb->flags & GOT_DEFLATE_F_OWN_OUTBUF)
240 2181e0c8 2019-03-19 stsp free(zb->outbuf);
241 2181e0c8 2019-03-19 stsp deflateEnd(&zb->z);
244 894e4711 2022-10-15 stsp const struct got_error *
245 894e4711 2022-10-15 stsp got_deflate_to_fd(off_t *outlen, FILE *infile, off_t len, int outfd,
246 894e4711 2022-10-15 stsp struct got_deflate_checksum *csum)
248 894e4711 2022-10-15 stsp const struct got_error *err;
249 894e4711 2022-10-15 stsp size_t avail;
250 894e4711 2022-10-15 stsp off_t consumed;
251 894e4711 2022-10-15 stsp struct got_deflate_buf zb;
253 894e4711 2022-10-15 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
257 894e4711 2022-10-15 stsp *outlen = 0;
260 894e4711 2022-10-15 stsp err = got_deflate_read(&zb, infile, len, &avail, &consumed);
263 894e4711 2022-10-15 stsp len -= consumed;
264 894e4711 2022-10-15 stsp if (avail > 0) {
265 13b2bc37 2022-10-23 stsp err = got_poll_write_full(outfd, zb.outbuf, avail);
269 894e4711 2022-10-15 stsp csum_output(csum, zb.outbuf, avail);
270 894e4711 2022-10-15 stsp *outlen += avail;
272 894e4711 2022-10-15 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
275 894e4711 2022-10-15 stsp got_deflate_end(&zb);
276 894e4711 2022-10-15 stsp return err;
279 894e4711 2022-10-15 stsp const struct got_error *
280 894e4711 2022-10-15 stsp got_deflate_to_fd_mmap(off_t *outlen, uint8_t *map, size_t offset,
281 894e4711 2022-10-15 stsp size_t len, int outfd, struct got_deflate_checksum *csum)
283 894e4711 2022-10-15 stsp const struct got_error *err;
284 894e4711 2022-10-15 stsp size_t avail, consumed;
285 894e4711 2022-10-15 stsp struct got_deflate_buf zb;
287 894e4711 2022-10-15 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
291 894e4711 2022-10-15 stsp *outlen = 0;
293 894e4711 2022-10-15 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
294 894e4711 2022-10-15 stsp &consumed);
297 894e4711 2022-10-15 stsp offset += consumed;
298 894e4711 2022-10-15 stsp len -= consumed;
299 894e4711 2022-10-15 stsp if (avail > 0) {
300 13b2bc37 2022-10-23 stsp err = got_poll_write_full(outfd, zb.outbuf, avail);
304 894e4711 2022-10-15 stsp csum_output(csum, zb.outbuf, avail);
305 894e4711 2022-10-15 stsp *outlen += avail;
307 894e4711 2022-10-15 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
310 894e4711 2022-10-15 stsp got_deflate_end(&zb);
311 894e4711 2022-10-15 stsp return err;
314 2181e0c8 2019-03-19 stsp const struct got_error *
315 72840534 2022-01-19 stsp got_deflate_to_file(off_t *outlen, FILE *infile, off_t len,
316 72840534 2022-01-19 stsp FILE *outfile, struct got_deflate_checksum *csum)
318 2181e0c8 2019-03-19 stsp const struct got_error *err;
319 2181e0c8 2019-03-19 stsp size_t avail;
320 72840534 2022-01-19 stsp off_t consumed;
321 2181e0c8 2019-03-19 stsp struct got_deflate_buf zb;
323 3b9e6fcf 2021-06-05 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
327 2181e0c8 2019-03-19 stsp *outlen = 0;
330 72840534 2022-01-19 stsp err = got_deflate_read(&zb, infile, len, &avail, &consumed);
333 72840534 2022-01-19 stsp len -= consumed;
334 2181e0c8 2019-03-19 stsp if (avail > 0) {
336 2181e0c8 2019-03-19 stsp n = fwrite(zb.outbuf, avail, 1, outfile);
337 2181e0c8 2019-03-19 stsp if (n != 1) {
338 2181e0c8 2019-03-19 stsp err = got_ferror(outfile, GOT_ERR_IO);
342 3b9e6fcf 2021-06-05 stsp csum_output(csum, zb.outbuf, avail);
343 2181e0c8 2019-03-19 stsp *outlen += avail;
345 2181e0c8 2019-03-19 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
348 2181e0c8 2019-03-19 stsp got_deflate_end(&zb);
349 2181e0c8 2019-03-19 stsp return err;
352 64a8571e 2022-01-07 stsp const struct got_error *
353 72840534 2022-01-19 stsp got_deflate_to_file_mmap(off_t *outlen, uint8_t *map, size_t offset,
354 64a8571e 2022-01-07 stsp size_t len, FILE *outfile, struct got_deflate_checksum *csum)
356 64a8571e 2022-01-07 stsp const struct got_error *err;
357 64a8571e 2022-01-07 stsp size_t avail, consumed;
358 64a8571e 2022-01-07 stsp struct got_deflate_buf zb;
360 64a8571e 2022-01-07 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
364 64a8571e 2022-01-07 stsp *outlen = 0;
366 64a8571e 2022-01-07 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
367 64a8571e 2022-01-07 stsp &consumed);
370 64a8571e 2022-01-07 stsp offset += consumed;
371 64a8571e 2022-01-07 stsp len -= consumed;
372 64a8571e 2022-01-07 stsp if (avail > 0) {
374 64a8571e 2022-01-07 stsp n = fwrite(zb.outbuf, avail, 1, outfile);
375 64a8571e 2022-01-07 stsp if (n != 1) {
376 64a8571e 2022-01-07 stsp err = got_ferror(outfile, GOT_ERR_IO);
380 64a8571e 2022-01-07 stsp csum_output(csum, zb.outbuf, avail);
381 64a8571e 2022-01-07 stsp *outlen += avail;
383 64a8571e 2022-01-07 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
386 2d9e6abf 2022-05-04 stsp got_deflate_end(&zb);
387 2d9e6abf 2022-05-04 stsp return err;
390 2d9e6abf 2022-05-04 stsp const struct got_error *
391 2d9e6abf 2022-05-04 stsp got_deflate_append_to_file_mmap(struct got_deflate_buf *zb, off_t *outlen,
392 2d9e6abf 2022-05-04 stsp uint8_t *map, size_t offset, size_t len, FILE *outfile,
393 2d9e6abf 2022-05-04 stsp struct got_deflate_checksum *csum)
395 2d9e6abf 2022-05-04 stsp const struct got_error *err;
396 2d9e6abf 2022-05-04 stsp size_t avail, consumed;
399 2d9e6abf 2022-05-04 stsp err = deflate_read_mmap(zb, map, offset, len, &avail,
400 2d9e6abf 2022-05-04 stsp &consumed, 0);
403 2d9e6abf 2022-05-04 stsp offset += consumed;
404 2d9e6abf 2022-05-04 stsp len -= consumed;
405 2d9e6abf 2022-05-04 stsp if (avail > 0) {
407 2d9e6abf 2022-05-04 stsp n = fwrite(zb->outbuf, avail, 1, outfile);
408 2d9e6abf 2022-05-04 stsp if (n != 1) {
409 2d9e6abf 2022-05-04 stsp err = got_ferror(outfile, GOT_ERR_IO);
413 2d9e6abf 2022-05-04 stsp csum_output(csum, zb->outbuf, avail);
414 2d9e6abf 2022-05-04 stsp if (outlen)
415 2d9e6abf 2022-05-04 stsp *outlen += avail;
417 2d9e6abf 2022-05-04 stsp } while ((zb->flags & GOT_DEFLATE_F_HAVE_MORE) && len > 0);
419 2d9e6abf 2022-05-04 stsp return err;
422 2d9e6abf 2022-05-04 stsp const struct got_error *
423 2d9e6abf 2022-05-04 stsp got_deflate_to_mem_mmap(uint8_t **outbuf, size_t *outlen,
424 2d9e6abf 2022-05-04 stsp size_t *consumed_total, struct got_deflate_checksum *csum, uint8_t *map,
425 2d9e6abf 2022-05-04 stsp size_t offset, size_t len)
427 2d9e6abf 2022-05-04 stsp const struct got_error *err;
428 2d9e6abf 2022-05-04 stsp size_t avail, consumed;
429 2d9e6abf 2022-05-04 stsp struct got_deflate_buf zb;
430 2d9e6abf 2022-05-04 stsp void *newbuf;
431 2d9e6abf 2022-05-04 stsp size_t nbuf = 1;
433 2d9e6abf 2022-05-04 stsp if (outbuf) {
434 2d9e6abf 2022-05-04 stsp *outbuf = malloc(GOT_DEFLATE_BUFSIZE);
435 2d9e6abf 2022-05-04 stsp if (*outbuf == NULL)
436 2d9e6abf 2022-05-04 stsp return got_error_from_errno("malloc");
437 2d9e6abf 2022-05-04 stsp err = got_deflate_init(&zb, *outbuf, GOT_DEFLATE_BUFSIZE);
439 2d9e6abf 2022-05-04 stsp free(*outbuf);
440 2d9e6abf 2022-05-04 stsp *outbuf = NULL;
441 2d9e6abf 2022-05-04 stsp return err;
444 2d9e6abf 2022-05-04 stsp err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);
446 2d9e6abf 2022-05-04 stsp return err;
449 2d9e6abf 2022-05-04 stsp *outlen = 0;
450 2d9e6abf 2022-05-04 stsp if (consumed_total)
451 2d9e6abf 2022-05-04 stsp *consumed_total = 0;
453 2d9e6abf 2022-05-04 stsp err = got_deflate_read_mmap(&zb, map, offset, len, &avail,
454 2d9e6abf 2022-05-04 stsp &consumed);
457 2d9e6abf 2022-05-04 stsp offset += consumed;
458 2d9e6abf 2022-05-04 stsp if (consumed_total)
459 2d9e6abf 2022-05-04 stsp *consumed_total += consumed;
460 2d9e6abf 2022-05-04 stsp len -= consumed;
461 2d9e6abf 2022-05-04 stsp if (avail > 0 && csum)
462 2d9e6abf 2022-05-04 stsp csum_output(csum, zb.outbuf, avail);
463 2d9e6abf 2022-05-04 stsp *outlen += avail;
464 2d9e6abf 2022-05-04 stsp if ((zb.flags & GOT_DEFLATE_F_HAVE_MORE) && outbuf != NULL) {
465 2d9e6abf 2022-05-04 stsp newbuf = reallocarray(*outbuf, ++nbuf,
466 2d9e6abf 2022-05-04 stsp GOT_DEFLATE_BUFSIZE);
467 2d9e6abf 2022-05-04 stsp if (newbuf == NULL) {
468 2d9e6abf 2022-05-04 stsp err = got_error_from_errno("reallocarray");
469 2d9e6abf 2022-05-04 stsp free(*outbuf);
470 2d9e6abf 2022-05-04 stsp *outbuf = NULL;
471 2d9e6abf 2022-05-04 stsp *outlen = 0;
474 2d9e6abf 2022-05-04 stsp *outbuf = newbuf;
475 2d9e6abf 2022-05-04 stsp zb.outbuf = newbuf + *outlen;
476 2d9e6abf 2022-05-04 stsp zb.outlen = (nbuf * GOT_DEFLATE_BUFSIZE) - *outlen;
478 2d9e6abf 2022-05-04 stsp } while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);
480 64a8571e 2022-01-07 stsp got_deflate_end(&zb);
481 64a8571e 2022-01-07 stsp return err;