Commit | Line | Data |
---|---|---|
d67c8bdf | 1 | /* |
70d794dc AT |
2 | Copyright (C) Andrew Tridgell 1996 |
3 | Copyright (C) Paul Mackerras 1996 | |
d67c8bdf | 4 | |
70d794dc AT |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
d67c8bdf | 9 | |
70d794dc AT |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
d67c8bdf | 14 | |
70d794dc AT |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | #include "rsync.h" | |
5914bf15 | 21 | #include "zlib/zlib.h" |
70d794dc AT |
22 | |
23 | extern int do_compression; | |
d67c8bdf | 24 | extern int module_id; |
e8a8167a | 25 | extern int def_compress_level; |
d67c8bdf | 26 | |
ec497df1 | 27 | static int compression_level, per_file_default_level; |
70d794dc | 28 | |
83fff1aa AT |
29 | /* determine the compression level based on a wildcard filename list */ |
30 | void set_compression(char *fname) | |
31 | { | |
ec497df1 WD |
32 | static char *match_list; |
33 | char *s; | |
83fff1aa | 34 | |
d67c8bdf WD |
35 | if (!do_compression) |
36 | return; | |
83fff1aa | 37 | |
ec497df1 WD |
38 | if (!match_list) { |
39 | char *t, *f = lp_dont_compress(module_id); | |
40 | int len = strlen(f); | |
41 | if (!(match_list = t = new_array(char, len + 2))) | |
42 | out_of_memory("set_compression"); | |
43 | while (*f) { | |
44 | if (*f == ' ') { | |
45 | f++; | |
46 | continue; | |
47 | } | |
48 | do { | |
49 | if (isupper(*(unsigned char *)f)) | |
50 | *t++ = tolower(*(unsigned char *)f); | |
51 | else | |
52 | *t++ = *f; | |
53 | } while (*++f != ' ' && *f); | |
54 | *t++ = '\0'; | |
55 | } | |
56 | /* Optimize a match-string of "*". */ | |
57 | if (t - match_list == 2 && match_list[0] == '*') { | |
58 | t = match_list; | |
59 | per_file_default_level = 0; | |
60 | } else | |
61 | per_file_default_level = def_compress_level; | |
62 | *t++ = '\0'; | |
63f0774f DD |
63 | } |
64 | ||
ec497df1 | 65 | compression_level = per_file_default_level; |
0fe987e2 | 66 | |
ec497df1 | 67 | if (!*match_list) |
d67c8bdf | 68 | return; |
83fff1aa | 69 | |
ec497df1 WD |
70 | if ((s = strrchr(fname, '/')) != NULL) |
71 | fname = s + 1; | |
83fff1aa | 72 | |
ec497df1 WD |
73 | for (s = match_list; *s; s += strlen(s) + 1) { |
74 | if (iwildmatch(s, fname)) { | |
83fff1aa AT |
75 | compression_level = 0; |
76 | break; | |
77 | } | |
78 | } | |
83fff1aa | 79 | } |
70d794dc AT |
80 | |
81 | /* non-compressing recv token */ | |
7fcbf9e4 | 82 | static int32 simple_recv_token(int f, char **data) |
70d794dc | 83 | { |
acc461c7 | 84 | static int32 residue; |
c5eb3650 | 85 | static char *buf; |
7fcbf9e4 | 86 | int32 n; |
70d794dc | 87 | |
c5eb3650 | 88 | if (!buf) { |
58cadc86 | 89 | buf = new_array(char, CHUNK_SIZE); |
d67c8bdf WD |
90 | if (!buf) |
91 | out_of_memory("simple_recv_token"); | |
c5eb3650 | 92 | } |
70d794dc | 93 | |
c5eb3650 | 94 | if (residue == 0) { |
7fcbf9e4 | 95 | int32 i = read_int(f); |
d67c8bdf WD |
96 | if (i <= 0) |
97 | return i; | |
c5eb3650 AT |
98 | residue = i; |
99 | } | |
70d794dc | 100 | |
c5eb3650 AT |
101 | *data = buf; |
102 | n = MIN(CHUNK_SIZE,residue); | |
103 | residue -= n; | |
104 | read_buf(f,buf,n); | |
105 | return n; | |
70d794dc AT |
106 | } |
107 | ||
108 | ||
109 | /* non-compressing send token */ | |
acc461c7 | 110 | static void simple_send_token(int f, int32 token, struct map_struct *buf, |
7fcbf9e4 | 111 | OFF_T offset, int32 n) |
70d794dc | 112 | { |
c5eb3650 | 113 | if (n > 0) { |
7fcbf9e4 WD |
114 | int32 len = 0; |
115 | while (len < n) { | |
116 | int32 n1 = MIN(CHUNK_SIZE, n-len); | |
117 | write_int(f, n1); | |
118 | write_buf(f, map_ptr(buf, offset+len, n1), n1); | |
119 | len += n1; | |
c5eb3650 AT |
120 | } |
121 | } | |
45f133b9 | 122 | /* a -2 token means to send data only and no token */ |
7fcbf9e4 WD |
123 | if (token != -2) |
124 | write_int(f, -(token+1)); | |
70d794dc AT |
125 | } |
126 | ||
127 | ||
861c20b4 PM |
128 | /* Flag bytes in compressed stream are encoded as follows: */ |
129 | #define END_FLAG 0 /* that's all folks */ | |
130 | #define TOKEN_LONG 0x20 /* followed by 32-bit token number */ | |
131 | #define TOKENRUN_LONG 0x21 /* ditto with 16-bit run count */ | |
132 | #define DEFLATED_DATA 0x40 /* + 6-bit high len, then low len byte */ | |
133 | #define TOKEN_REL 0x80 /* + 6-bit relative token number */ | |
134 | #define TOKENRUN_REL 0xc0 /* ditto with 16-bit run count */ | |
135 | ||
136 | #define MAX_DATA_COUNT 16383 /* fit 14 bit count into 2 bytes with flags */ | |
137 | ||
24733919 WD |
138 | /* zlib.h says that if we want to be able to compress something in a single |
139 | * call, avail_out must be at least 0.1% larger than avail_in plus 12 bytes. | |
140 | * We'll add in 0.1%+16, just to be safe (and we'll avoid floating point, | |
141 | * to ensure that this is a compile-time value). */ | |
142 | #define AVAIL_OUT_SIZE(avail_in_size) ((avail_in_size)*1001/1000+16) | |
143 | ||
861c20b4 | 144 | /* For coding runs of tokens */ |
acc461c7 WD |
145 | static int32 last_token = -1; |
146 | static int32 run_start; | |
147 | static int32 last_run_end; | |
861c20b4 PM |
148 | |
149 | /* Deflation state */ | |
150 | static z_stream tx_strm; | |
151 | ||
152 | /* Output buffer */ | |
3a6a366f | 153 | static char *obuf; |
24733919 WD |
154 | |
155 | /* We want obuf to be able to hold both MAX_DATA_COUNT+2 bytes as well as | |
156 | * AVAIL_OUT_SIZE(CHUNK_SIZE) bytes, so make sure that it's large enough. */ | |
157 | #if MAX_DATA_COUNT+2 > AVAIL_OUT_SIZE(CHUNK_SIZE) | |
158 | #define OBUF_SIZE (MAX_DATA_COUNT+2) | |
159 | #else | |
160 | #define OBUF_SIZE AVAIL_OUT_SIZE(CHUNK_SIZE) | |
161 | #endif | |
861c20b4 PM |
162 | |
163 | /* Send a deflated token */ | |
164 | static void | |
acc461c7 | 165 | send_deflated_token(int f, int32 token, struct map_struct *buf, OFF_T offset, |
7fcbf9e4 | 166 | int32 nb, int32 toklen) |
861c20b4 | 167 | { |
7fcbf9e4 | 168 | int32 n, r; |
5914bf15 PM |
169 | static int init_done, flush_pending; |
170 | ||
171 | if (last_token == -1) { | |
172 | /* initialization */ | |
173 | if (!init_done) { | |
174 | tx_strm.next_in = NULL; | |
175 | tx_strm.zalloc = NULL; | |
176 | tx_strm.zfree = NULL; | |
83fff1aa | 177 | if (deflateInit2(&tx_strm, compression_level, |
5914bf15 PM |
178 | Z_DEFLATED, -15, 8, |
179 | Z_DEFAULT_STRATEGY) != Z_OK) { | |
180 | rprintf(FERROR, "compression init failed\n"); | |
65417579 | 181 | exit_cleanup(RERR_STREAMIO); |
5914bf15 | 182 | } |
58cadc86 | 183 | if ((obuf = new_array(char, OBUF_SIZE)) == NULL) |
5914bf15 PM |
184 | out_of_memory("send_deflated_token"); |
185 | init_done = 1; | |
186 | } else | |
187 | deflateReset(&tx_strm); | |
188 | last_run_end = 0; | |
189 | run_start = token; | |
190 | flush_pending = 0; | |
191 | ||
192 | } else if (last_token == -2) { | |
193 | run_start = token; | |
194 | ||
195 | } else if (nb != 0 || token != last_token + 1 | |
196 | || token >= run_start + 65536) { | |
197 | /* output previous run */ | |
198 | r = run_start - last_run_end; | |
199 | n = last_token - run_start; | |
200 | if (r >= 0 && r <= 63) { | |
201 | write_byte(f, (n==0? TOKEN_REL: TOKENRUN_REL) + r); | |
202 | } else { | |
203 | write_byte(f, (n==0? TOKEN_LONG: TOKENRUN_LONG)); | |
204 | write_int(f, run_start); | |
205 | } | |
206 | if (n != 0) { | |
207 | write_byte(f, n); | |
208 | write_byte(f, n >> 8); | |
209 | } | |
210 | last_run_end = last_token; | |
211 | run_start = token; | |
861c20b4 | 212 | } |
5914bf15 PM |
213 | |
214 | last_token = token; | |
215 | ||
216 | if (nb != 0 || flush_pending) { | |
217 | /* deflate the data starting at offset */ | |
218 | int flush = Z_NO_FLUSH; | |
219 | tx_strm.avail_in = 0; | |
220 | tx_strm.avail_out = 0; | |
221 | do { | |
222 | if (tx_strm.avail_in == 0 && nb != 0) { | |
223 | /* give it some more input */ | |
224 | n = MIN(nb, CHUNK_SIZE); | |
225 | tx_strm.next_in = (Bytef *) | |
226 | map_ptr(buf, offset, n); | |
227 | tx_strm.avail_in = n; | |
228 | nb -= n; | |
229 | offset += n; | |
230 | } | |
231 | if (tx_strm.avail_out == 0) { | |
232 | tx_strm.next_out = (Bytef *)(obuf + 2); | |
233 | tx_strm.avail_out = MAX_DATA_COUNT; | |
234 | if (flush != Z_NO_FLUSH) { | |
235 | /* | |
236 | * We left the last 4 bytes in the | |
237 | * buffer, in case they are the | |
238 | * last 4. Move them to the front. | |
239 | */ | |
240 | memcpy(tx_strm.next_out, | |
241 | obuf+MAX_DATA_COUNT-2, 4); | |
242 | tx_strm.next_out += 4; | |
243 | tx_strm.avail_out -= 4; | |
244 | } | |
245 | } | |
246 | if (nb == 0 && token != -2) | |
247 | flush = Z_SYNC_FLUSH; | |
248 | r = deflate(&tx_strm, flush); | |
249 | if (r != Z_OK) { | |
250 | rprintf(FERROR, "deflate returned %d\n", r); | |
65417579 | 251 | exit_cleanup(RERR_STREAMIO); |
5914bf15 PM |
252 | } |
253 | if (nb == 0 || tx_strm.avail_out == 0) { | |
254 | n = MAX_DATA_COUNT - tx_strm.avail_out; | |
255 | if (flush != Z_NO_FLUSH) { | |
256 | /* | |
257 | * We have to trim off the last 4 | |
258 | * bytes of output when flushing | |
259 | * (they are just 0, 0, ff, ff). | |
260 | */ | |
261 | n -= 4; | |
262 | } | |
263 | if (n > 0) { | |
264 | obuf[0] = DEFLATED_DATA + (n >> 8); | |
265 | obuf[1] = n; | |
266 | write_buf(f, obuf, n+2); | |
267 | } | |
268 | } | |
269 | } while (nb != 0 || tx_strm.avail_out == 0); | |
270 | flush_pending = token == -2; | |
861c20b4 | 271 | } |
861c20b4 | 272 | |
5914bf15 PM |
273 | if (token == -1) { |
274 | /* end of file - clean up */ | |
275 | write_byte(f, END_FLAG); | |
5914bf15 | 276 | } else if (token != -2) { |
acc461c7 WD |
277 | /* Add the data in the current block to the compressor's |
278 | * history and hash table. */ | |
01f439ec WD |
279 | do { |
280 | /* Break up long sections in the same way that | |
281 | * see_deflate_token() does. */ | |
282 | int32 n1 = toklen > 0xffff ? 0xffff : toklen; | |
283 | toklen -= n1; | |
284 | tx_strm.next_in = (Bytef *)map_ptr(buf, offset, n1); | |
285 | tx_strm.avail_in = n1; | |
286 | tx_strm.next_out = (Bytef *) obuf; | |
287 | tx_strm.avail_out = AVAIL_OUT_SIZE(CHUNK_SIZE); | |
288 | r = deflate(&tx_strm, Z_INSERT_ONLY); | |
289 | if (r != Z_OK || tx_strm.avail_in != 0) { | |
290 | rprintf(FERROR, "deflate on token returned %d (%d bytes left)\n", | |
291 | r, tx_strm.avail_in); | |
292 | exit_cleanup(RERR_STREAMIO); | |
293 | } | |
294 | } while (toklen > 0); | |
861c20b4 | 295 | } |
861c20b4 PM |
296 | } |
297 | ||
298 | ||
299 | /* tells us what the receiver is in the middle of doing */ | |
300 | static enum { r_init, r_idle, r_running, r_inflating, r_inflated } recv_state; | |
70d794dc | 301 | |
861c20b4 PM |
302 | /* for inflating stuff */ |
303 | static z_stream rx_strm; | |
304 | static char *cbuf; | |
305 | static char *dbuf; | |
306 | ||
307 | /* for decoding runs of tokens */ | |
7fcbf9e4 WD |
308 | static int32 rx_token; |
309 | static int32 rx_run; | |
861c20b4 PM |
310 | |
311 | /* Receive a deflated token and inflate it */ | |
7fcbf9e4 | 312 | static int32 recv_deflated_token(int f, char **data) |
861c20b4 | 313 | { |
5914bf15 | 314 | static int init_done; |
acc461c7 WD |
315 | static int32 saved_flag; |
316 | int32 n, flag; | |
317 | int r; | |
5914bf15 PM |
318 | |
319 | for (;;) { | |
320 | switch (recv_state) { | |
321 | case r_init: | |
322 | if (!init_done) { | |
323 | rx_strm.next_out = NULL; | |
324 | rx_strm.zalloc = NULL; | |
325 | rx_strm.zfree = NULL; | |
326 | if (inflateInit2(&rx_strm, -15) != Z_OK) { | |
327 | rprintf(FERROR, "inflate init failed\n"); | |
65417579 | 328 | exit_cleanup(RERR_STREAMIO); |
5914bf15 | 329 | } |
58cadc86 WD |
330 | if (!(cbuf = new_array(char, MAX_DATA_COUNT)) |
331 | || !(dbuf = new_array(char, AVAIL_OUT_SIZE(CHUNK_SIZE)))) | |
5914bf15 PM |
332 | out_of_memory("recv_deflated_token"); |
333 | init_done = 1; | |
334 | } else { | |
335 | inflateReset(&rx_strm); | |
336 | } | |
b8d4524b | 337 | recv_state = r_idle; |
5914bf15 PM |
338 | rx_token = 0; |
339 | break; | |
340 | ||
341 | case r_idle: | |
342 | case r_inflated: | |
343 | if (saved_flag) { | |
344 | flag = saved_flag & 0xff; | |
345 | saved_flag = 0; | |
346 | } else | |
347 | flag = read_byte(f); | |
348 | if ((flag & 0xC0) == DEFLATED_DATA) { | |
349 | n = ((flag & 0x3f) << 8) + read_byte(f); | |
350 | read_buf(f, cbuf, n); | |
351 | rx_strm.next_in = (Bytef *)cbuf; | |
352 | rx_strm.avail_in = n; | |
353 | recv_state = r_inflating; | |
354 | break; | |
355 | } | |
356 | if (recv_state == r_inflated) { | |
357 | /* check previous inflated stuff ended correctly */ | |
358 | rx_strm.avail_in = 0; | |
359 | rx_strm.next_out = (Bytef *)dbuf; | |
1dbb94ca | 360 | rx_strm.avail_out = AVAIL_OUT_SIZE(CHUNK_SIZE); |
5914bf15 | 361 | r = inflate(&rx_strm, Z_SYNC_FLUSH); |
1dbb94ca | 362 | n = AVAIL_OUT_SIZE(CHUNK_SIZE) - rx_strm.avail_out; |
5914bf15 PM |
363 | /* |
364 | * Z_BUF_ERROR just means no progress was | |
365 | * made, i.e. the decompressor didn't have | |
366 | * any pending output for us. | |
367 | */ | |
368 | if (r != Z_OK && r != Z_BUF_ERROR) { | |
369 | rprintf(FERROR, "inflate flush returned %d (%d bytes)\n", | |
370 | r, n); | |
65417579 | 371 | exit_cleanup(RERR_STREAMIO); |
5914bf15 PM |
372 | } |
373 | if (n != 0 && r != Z_BUF_ERROR) { | |
374 | /* have to return some more data and | |
375 | save the flag for later. */ | |
376 | saved_flag = flag + 0x10000; | |
377 | *data = dbuf; | |
378 | return n; | |
379 | } | |
380 | /* | |
381 | * At this point the decompressor should | |
382 | * be expecting to see the 0, 0, ff, ff bytes. | |
383 | */ | |
384 | if (!inflateSyncPoint(&rx_strm)) { | |
385 | rprintf(FERROR, "decompressor lost sync!\n"); | |
65417579 | 386 | exit_cleanup(RERR_STREAMIO); |
5914bf15 PM |
387 | } |
388 | rx_strm.avail_in = 4; | |
389 | rx_strm.next_in = (Bytef *)cbuf; | |
390 | cbuf[0] = cbuf[1] = 0; | |
391 | cbuf[2] = cbuf[3] = 0xff; | |
392 | inflate(&rx_strm, Z_SYNC_FLUSH); | |
393 | recv_state = r_idle; | |
394 | } | |
395 | if (flag == END_FLAG) { | |
396 | /* that's all folks */ | |
397 | recv_state = r_init; | |
398 | return 0; | |
399 | } | |
400 | ||
401 | /* here we have a token of some kind */ | |
402 | if (flag & TOKEN_REL) { | |
403 | rx_token += flag & 0x3f; | |
404 | flag >>= 6; | |
405 | } else | |
406 | rx_token = read_int(f); | |
407 | if (flag & 1) { | |
408 | rx_run = read_byte(f); | |
409 | rx_run += read_byte(f) << 8; | |
410 | recv_state = r_running; | |
411 | } | |
412 | return -1 - rx_token; | |
413 | ||
414 | case r_inflating: | |
415 | rx_strm.next_out = (Bytef *)dbuf; | |
1dbb94ca | 416 | rx_strm.avail_out = AVAIL_OUT_SIZE(CHUNK_SIZE); |
5914bf15 | 417 | r = inflate(&rx_strm, Z_NO_FLUSH); |
1dbb94ca | 418 | n = AVAIL_OUT_SIZE(CHUNK_SIZE) - rx_strm.avail_out; |
5914bf15 PM |
419 | if (r != Z_OK) { |
420 | rprintf(FERROR, "inflate returned %d (%d bytes)\n", r, n); | |
65417579 | 421 | exit_cleanup(RERR_STREAMIO); |
5914bf15 PM |
422 | } |
423 | if (rx_strm.avail_in == 0) | |
424 | recv_state = r_inflated; | |
425 | if (n != 0) { | |
426 | *data = dbuf; | |
427 | return n; | |
428 | } | |
429 | break; | |
430 | ||
431 | case r_running: | |
432 | ++rx_token; | |
433 | if (--rx_run == 0) | |
434 | recv_state = r_idle; | |
435 | return -1 - rx_token; | |
b8d4524b | 436 | } |
861c20b4 | 437 | } |
861c20b4 PM |
438 | } |
439 | ||
440 | /* | |
441 | * put the data corresponding to a token that we've just returned | |
442 | * from recv_deflated_token into the decompressor's history buffer. | |
443 | */ | |
7fcbf9e4 | 444 | static void see_deflate_token(char *buf, int32 len) |
861c20b4 | 445 | { |
acc461c7 WD |
446 | int r; |
447 | int32 blklen; | |
5914bf15 PM |
448 | unsigned char hdr[5]; |
449 | ||
450 | rx_strm.avail_in = 0; | |
451 | blklen = 0; | |
452 | hdr[0] = 0; | |
453 | do { | |
454 | if (rx_strm.avail_in == 0 && len != 0) { | |
455 | if (blklen == 0) { | |
456 | /* Give it a fake stored-block header. */ | |
457 | rx_strm.next_in = (Bytef *)hdr; | |
458 | rx_strm.avail_in = 5; | |
459 | blklen = len; | |
460 | if (blklen > 0xffff) | |
461 | blklen = 0xffff; | |
462 | hdr[1] = blklen; | |
463 | hdr[2] = blklen >> 8; | |
464 | hdr[3] = ~hdr[1]; | |
465 | hdr[4] = ~hdr[2]; | |
466 | } else { | |
467 | rx_strm.next_in = (Bytef *)buf; | |
468 | rx_strm.avail_in = blklen; | |
469 | len -= blklen; | |
470 | blklen = 0; | |
471 | } | |
472 | } | |
473 | rx_strm.next_out = (Bytef *)dbuf; | |
1dbb94ca | 474 | rx_strm.avail_out = AVAIL_OUT_SIZE(CHUNK_SIZE); |
5914bf15 PM |
475 | r = inflate(&rx_strm, Z_SYNC_FLUSH); |
476 | if (r != Z_OK) { | |
477 | rprintf(FERROR, "inflate (token) returned %d\n", r); | |
65417579 | 478 | exit_cleanup(RERR_STREAMIO); |
5914bf15 PM |
479 | } |
480 | } while (len || rx_strm.avail_out == 0); | |
861c20b4 | 481 | } |
70d794dc | 482 | |
79f671cc MP |
483 | /** |
484 | * Transmit a verbatim buffer of length @p n followed by a token. | |
d67c8bdf | 485 | * If token == -1 then we have reached EOF |
70d794dc | 486 | * If n == 0 then don't send a buffer |
70d794dc | 487 | */ |
acc461c7 | 488 | void send_token(int f, int32 token, struct map_struct *buf, OFF_T offset, |
7fcbf9e4 | 489 | int32 n, int32 toklen) |
70d794dc | 490 | { |
7fcbf9e4 WD |
491 | if (!do_compression) |
492 | simple_send_token(f, token, buf, offset, n); | |
493 | else | |
5914bf15 | 494 | send_deflated_token(f, token, buf, offset, n, toklen); |
70d794dc AT |
495 | } |
496 | ||
497 | ||
498 | /* | |
499 | * receive a token or buffer from the other end. If the reurn value is >0 then | |
500 | * it is a data buffer of that length, and *data will point at the data. | |
501 | * if the return value is -i then it represents token i-1 | |
502 | * if the return value is 0 then the end has been reached | |
503 | */ | |
7fcbf9e4 | 504 | int32 recv_token(int f, char **data) |
70d794dc | 505 | { |
5914bf15 PM |
506 | int tok; |
507 | ||
508 | if (!do_compression) { | |
509 | tok = simple_recv_token(f,data); | |
510 | } else { | |
511 | tok = recv_deflated_token(f, data); | |
512 | } | |
513 | return tok; | |
861c20b4 PM |
514 | } |
515 | ||
516 | /* | |
517 | * look at the data corresponding to a token, if necessary | |
518 | */ | |
7fcbf9e4 | 519 | void see_token(char *data, int32 toklen) |
861c20b4 | 520 | { |
5914bf15 PM |
521 | if (do_compression) |
522 | see_deflate_token(data, toklen); | |
70d794dc | 523 | } |