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GeezerVison is showing github.com — graalpython/graalpython/python-libzsupport/src/zlib.c at master · SnoopInf/graalpython Expand file tree/ Copy pathzlib.cMore file actions 1378 lines (1207 loc) · 43.6 KB / Copy pathzlib.cFile metadata and controls1378 lines (1207 loc) · 43.6 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * The Universal Permissive License (UPL), Version 1.0 * * Subject to the condition set forth below, permission is hereby granted to any * person obtaining a copy of this software, associated documentation and/or * data (collectively the "Software"), free of charge and under any and all * copyright rights in the Software, and any and all patent rights owned or * freely licensable by each licensor hereunder covering either (i) the * unmodified Software as contributed to or provided by such licensor, or (ii) * the Larger Works (as defined below), to deal in both * * (a) the Software, and * * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if * one is included with the Software each a "Larger Work" to which the Software * is contributed by such licensors), * * without restriction, including without limitation the rights to copy, create * derivative works of, display, perform, and distribute the Software and make, * use, sell, offer for sale, import, export, have made, and have sold the * Software and the Larger Work(s), and to sublicense the foregoing rights on * either these or other terms. * * This license is subject to the following condition: * * The above copyright notice and either this complete permission notice or at a * minimum a reference to the UPL must be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* * This implementation emulate CPython's zlib * see cpython/Modules/zlibmodule.c */ #define DEBUG 500 // #define BENCHMARK #include <limits.h> #include <stdlib.h> #include <assert.h> #include <string.h> #include "zlib.h" // Integer.MAX_INT #define GRAALPYTHON_MAX_SIZE (INT_MAX) #define DEF_BUF_SIZE (16*1024) #define DEF_MAX_INITIAL_BUF_SIZE (16 * 1024 * 1024) /* The following parameters are copied from zutil.h, version 0.95 */ #define DEFLATED 8 #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif #ifndef NDEBUG #include <stdio.h> #include <stdarg.h> static void debug_log(int level, char *file, int line, char *format, ...) { if (DEBUG > level) { return; } char *type = "ALL"; switch (level) { case 1000: type = "SEVERE"; break; case 900: type = "WARNING"; break; case 800: type = "INFO"; break; case 700: type = "CONFIG"; break; case 500: type = "FINE"; break; case 400: type = "FINER"; break; case 300: type = "FINEST"; break; } va_list args; va_start(args, format); fprintf(stderr, "[%s %s:%d] ", type, file, line); vfprintf(stderr, format, args); // fprintf(stderr, "\n"); va_end(args); } #define LOG_SEVERE(format, ...) \ debug_log(1000, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_WARNING(format, ...) \ debug_log(900, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_INFO(format, ...) \ debug_log(800, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_CONFIG(format, ...) \ debug_log(700, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_FINE(format, ...) \ debug_log(500, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_FINER(format, ...) \ debug_log(400, __FILE__, __LINE__, format, ## __VA_ARGS__); #define LOG_FINEST(format, ...) \ debug_log(300, __FILE__, __LINE__, format, ## __VA_ARGS__); #else #define LOG_SEVERE(format, ...) #define LOG_WARNING(format, ...) #define LOG_INFO(format, ...) #define LOG_CONFIG(format, ...) #define LOG_FINE(format, ...) #define LOG_FINER(format, ...) #define LOG_FINEST(format, ...) #endif #ifdef BENCHMARK #include <sys/time.h> #include <sys/resource.h> double get_time() { struct timeval t; struct timezone tzp; gettimeofday(&t, &tzp); return t.tv_sec + t.tv_usec*1e-6; } #define START_TIME double start_time = get_time(); #define END_TIME(zst) zst->timeElapsed += get_time() - start_time; #else #define START_TIME #define END_TIME(zst) #endif // The ref_count is important for `copy` as we // share off heap storage between native objects. typedef struct { size_t ref_count; size_t size; Byte *buf; } off_heap_buffer; typedef struct { size_t next_in_index; off_heap_buffer *unused_data; off_heap_buffer *unconsumed_tail; int eof; int is_initialised; off_heap_buffer *zdict; size_t avail_in_real; } compobject; #define NOT_INITIALIZED 0 #define DEFLATE_TYPE 1 #define INFLATE_TYPE 2 typedef struct { z_stream zst; int zst_type; off_heap_buffer *output; size_t output_size; off_heap_buffer *input_buffer; size_t input_buffer_size; compobject *comp; int error_function; #ifdef BENCHMARK double timeElapsed; #endif } zlib_stream; #define NO_ERROR 0 // nfi_var #define DEFLATE_INIT_ERROR 101 // nfi_var #define DEFLATE_END_ERROR 102 // nfi_var #define DEFLATE_DICT_ERROR 103 // nfi_var #define DEFLATE_OBJ_ERROR 104 // nfi_var #define DEFLATE_FLUSH_ERROR 105 // nfi_var #define DEFLATE_COPY_ERROR 106 // nfi_var #define DEFLATE_ERROR 107 // nfi_var #define INFLATE_INIT_ERROR 201 // nfi_var #define INFLATE_END_ERROR 202 // nfi_var #define INFLATE_DICT_ERROR 203 // nfi_var #define INFLATE_OBJ_ERROR 204 // nfi_var #define INFLATE_FLUSH_ERROR 205 // nfi_var #define INFLATE_COPY_ERROR 206 // nfi_var #define INFLATE_ERROR 207 // nfi_var #define INCOMPLETE_ERROR 99 // nfi_var #define MEMORY_ERROR 999 // nfi_var // options to get buffer from the native side #define OUTPUT_OPTION 0 // nfi_var #define UNUSED_DATA_OPTION 1 // nfi_var #define UNCONSUMED_TAIL_OPTION 2 // nfi_var #define ZDICT_OPTION 3 // nfi_var // nfi_function: name('zlibVersion') static(true) const char *zlib_get_version() { return ZLIB_VERSION; } // nfi_function: name('zlibRuntimeVersion') static(true) const char *zlib_get_runtime_version() { return zlibVersion(); } // nfi_function: name('crc32') uLong zlib_crc32(uLong crc, const Byte *buf, uInt len) { return crc32(crc, buf, len); } // nfi_function: name('adler32') uLong zlib_adler32(uLong crc, const Byte *buf, uInt len) { return adler32(crc, buf, len); } static void* zlib_allocate(voidpf ctx, uInt items, uInt size) { void *m = malloc((size_t)items * (size_t)size); LOG_FINER("malloc(address: %p, items: %u, size: %u)\n", m, items, size); return m; } static void zlib_deallocate(voidpf ctx, void *ptr) { LOG_FINER("free(%p)\n", ptr); free(ptr); } static off_heap_buffer* zlib_allocate_buffer(size_t items) { size_t size = items * sizeof(Byte); if (!size) { LOG_SEVERE("Creating Empty Buffer!!\n"); size = sizeof(Byte); } off_heap_buffer *o = (off_heap_buffer*) malloc(sizeof(off_heap_buffer)); if (!o) { return NULL; } Byte *buf = (Byte*) malloc(size); if (!buf) { LOG_SEVERE("Memory Error!!\n"); } o->ref_count = 1; o->buf = buf; o->size = items; LOG_FINER("malloc[off_heap_buffer](address: %p, buf: %p, items: %zu, ref_count: %zu)\n", o, buf, items, o->ref_count); return o; } static off_heap_buffer* zlib_create_copy_buffer(Byte *src, size_t len) { off_heap_buffer *dest = zlib_allocate_buffer(len); if (dest && len > 0) { memcpy(dest->buf, src, len); } return dest; } static void zlib_release_buffer(off_heap_buffer *o) { if (!o) { return; } if (o->ref_count == 0) { LOG_SEVERE("trying to double free(%p)!!\n", o); return; } LOG_FINEST("off_heap_buffer(address: %p, ref_count: %zu - 1)\n", o, o->ref_count); o->ref_count--; if (o->ref_count > 0) { return; } LOG_FINER("free(%p)\n", o); free(o->buf); free(o); } static off_heap_buffer* zlib_get_ref(off_heap_buffer* o) { if (o) { LOG_FINEST("off_heap_buffer(ref_count: %zu + 1)\n", o->ref_count); o->ref_count++; } return o; } // nfi_function: name('createStream') map('zlib_stream*', 'POINTER') zlib_stream *zlib_create_zlib_stream() { zlib_stream *zst = (zlib_stream *) malloc(sizeof(zlib_stream)); zst->zst_type = NOT_INITIALIZED; zst->error_function = NO_ERROR; zst->output = zlib_allocate_buffer(1); zst->output->size = 0; zst->output_size = 0; zst->input_buffer = zlib_allocate_buffer(1); zst->input_buffer->size = 0; zst->input_buffer_size = 0; zst->zst.opaque = Z_NULL; zst->zst.zalloc = zlib_allocate; zst->zst.zfree = zlib_deallocate; zst->zst.next_in = NULL; zst->zst.next_out = NULL; zst->comp = NULL; #ifdef BENCHMARK zst->timeElapsed = 0; #endif LOG_INFO("zlib_stream(%p)\n", zst); return zst; } void zlib_release_compobject(compobject *comp) { LOG_INFO("zlib_release_compobject(%p)\n", comp); if (!comp) { return; } if (comp->unconsumed_tail) { zlib_release_buffer(comp->unconsumed_tail); } if (comp->unused_data) { zlib_release_buffer(comp->unused_data); } if (comp->zdict) { zlib_release_buffer(comp->zdict); } free(comp); } // nfi_function: name('getTimeElapsed') map('zlib_stream*', 'POINTER') static(true) double zlib_get_timeElapsed(zlib_stream* zst) { #ifdef BENCHMARK double t = zst->timeElapsed; LOG_FINEST("time Elapsed: %.2f\n", t); zst->timeElapsed = 0; return t; #else return -1.0; #endif } // nfi_function: name('deallocateStream') map('zlib_stream*', 'POINTER') void zlib_free_stream(zlib_stream* zst) { if (!zst) { return; } if(zst->zst_type) { if (zst->zst_type == DEFLATE_TYPE) { deflateEnd(&zst->zst); } else { inflateEnd(&zst->zst); } } zlib_release_buffer(zst->output); if (zst->input_buffer) { zlib_release_buffer(zst->input_buffer); } zlib_release_compobject(zst->comp); LOG_INFO("free zlib_stream(%p)\n", zst); free(zst); } // nfi_function: name('gcReleaseHelper') map('zlib_stream*', 'POINTER') release(true) void zlib_gc_helper(zlib_stream* zst) { zlib_free_stream(zst); } // nfi_function: name('getErrorFunction') map('zlib_stream*', 'POINTER') int zlib_get_error_type(zlib_stream *zst) { return zst->error_function; } // nfi_function: name('getStreamErrorMsg') map('zlib_stream*', 'POINTER') const char *zlib_get_stream_msg(zlib_stream *zst) { return zst->zst.msg; } // nfi_function: name('hasStreamErrorMsg') map('zlib_stream*', 'POINTER') int zlib_has_stream_msg(zlib_stream *zst) { if (zst->zst.msg == Z_NULL) { return 0; } return 1; } // nfi_function: name('getEOF') map('zlib_stream*', 'POINTER') int zlib_get_eof(zlib_stream *zst) { return zst->comp->eof; } // nfi_function: name('getIsInitialised') map('zlib_stream*', 'POINTER') int zlib_get_is_initialised(zlib_stream *zst) { return zst->comp->is_initialised; } // nfi_function: name('getBufferSize') map('zlib_stream*', 'POINTER') uInt zlib_get_buffer_size(zlib_stream *zst, int option) { LOG_INFO("zlib_get_buffer_size(%p)\n", zst); size_t size = 0; switch(option) { case OUTPUT_OPTION: size = zst->output_size; break; case UNUSED_DATA_OPTION: assert(zst->comp != NULL); size = zst->comp->unused_data->size; break; case UNCONSUMED_TAIL_OPTION: assert(zst->comp != NULL); size = zst->comp->unconsumed_tail->size; break; case ZDICT_OPTION: assert(zst->comp != NULL); size = zst->comp->zdict->size; break; } if (size > GRAALPYTHON_MAX_SIZE) { LOG_SEVERE("buffer size is larger than max: %zd > %zd!!\n", size, (ssize_t) GRAALPYTHON_MAX_SIZE); return GRAALPYTHON_MAX_SIZE; } return size; } // nfi_function: name('getBuffer') map('zlib_stream*', 'POINTER') void zlib_get_off_heap_buffer(zlib_stream *zst, int option, Byte *dest) { LOG_INFO("zlib_get_off_heap_buffer(%p)\n", zst); off_heap_buffer *buffer = NULL; size_t size = 0; switch(option) { case OUTPUT_OPTION: buffer = zst->output; size = zst->output_size; break; case UNUSED_DATA_OPTION: assert(zst->comp != NULL); buffer = zst->comp->unused_data; size = zst->comp->unused_data->size; break; case UNCONSUMED_TAIL_OPTION: assert(zst->comp != NULL); buffer = zst->comp->unconsumed_tail; size = zst->comp->unconsumed_tail->size; break; case ZDICT_OPTION: assert(zst->comp != NULL); buffer = zst->comp->zdict; size = zst->comp->zdict->size; break; default: return; } if (!size) { return; } assert(buffer->buf != NULL); memcpy(dest, buffer->buf, size); } // nfi_function: name('createCompObject') map('zlib_stream*', 'POINTER') zlib_stream *zlib_create_compobject() { zlib_stream *zst = zlib_create_zlib_stream(); compobject *comp = (compobject *) malloc(sizeof(compobject)); LOG_INFO("zlib_create_compobject(%p)\n", comp); comp->next_in_index = 0; comp->eof = 0; comp->is_initialised = 0; comp->unconsumed_tail = zlib_allocate_buffer(1); comp->unconsumed_tail->size = 0; comp->unused_data = zlib_allocate_buffer(1); comp->unused_data->size = 0; comp->zdict = NULL; comp->avail_in_real = 0; assert(zst->comp == NULL); zst->comp = comp; return zst; } void zlib_set_zdict(zlib_stream *zst, Byte *zdict, size_t zdict_len) { if (!zst->comp) { LOG_SEVERE("compobject is NULL!!\n"); return; } zlib_release_buffer(zst->comp->zdict); zst->comp->zdict = zlib_create_copy_buffer(zdict, zdict_len); LOG_INFO("zlib_set_zdict(zdict: %p, len: %zu)\n", zst->comp->zdict, zst->comp->zdict->size); } static void clear_output(zlib_stream *zst) { zlib_release_buffer(zst->output); zst->output = zlib_allocate_buffer(1); zst->output->size = 0; zst->output_size = 0; } static void error_occurred(zlib_stream *zst, int errFunction) { zst->error_function = errFunction; clear_output(zst); } static int resize_off_heap_buffer(zlib_stream *zst, size_t length, int is_output) { LOG_INFO("resize_off_heap_buffer(%p)\n", zst); off_heap_buffer *current; size_t len; if (is_output == 1) { current = zst->output; len = zst->output->size; } else { current = zst->input_buffer; len = zst->input_buffer->size; } off_heap_buffer *resized = zlib_allocate_buffer(length); if (!resized) { return -1; } memcpy(resized->buf, current->buf, len); zlib_release_buffer(current); if (is_output == 1) { zst->output = resized; } else { zst->input_buffer = resized; } return 0; } /************************************************ * Compress * ************************************************/ static ssize_t arrange_output_buffer_with_maximum(zlib_stream *zst, ssize_t length, ssize_t max_length) { LOG_INFO("arrange_output_buffer_with_maximum(%p, length: %zd, max_length: %zd)\n", zst, length, max_length); ssize_t occupied; if (!zst->output->size) { off_heap_buffer *buf = zlib_allocate_buffer(length); if (!buf) { return -1; } zlib_release_buffer(zst->output); zst->output = buf; occupied = 0; } else { occupied = zst->zst.next_out - zst->output->buf; if (length == occupied) { ssize_t new_length; assert(length <= max_length); /* can not scale the buffer over max_length */ if (length == max_length) { return -2; } if (length <= (max_length >> 1)) { new_length = length << 1; } else { new_length = max_length; } if (resize_off_heap_buffer(zst, new_length, 1) < 0) { return -1; } length = new_length; } } zst->zst.avail_out = length - occupied; zst->zst.next_out = zst->output->buf + occupied; return length; } static ssize_t arrange_output_buffer(zlib_stream *zst, ssize_t length) { return arrange_output_buffer_with_maximum(zst, length, GRAALPYTHON_MAX_SIZE); } // nfi_function: name('deflateOffHeap') map('zlib_stream*', 'POINTER') int zlib_deflate_off_heap(zlib_stream *zst, Byte *in, ssize_t in_len, ssize_t buf_size, int level, int wbits) { LOG_INFO("zlib_deflate_off_heap(%p)\n", zst); int err, flush; ssize_t ibuflen = in_len, obuflen = buf_size; zst->zst.next_in = in; err = deflateInit2(&zst->zst, level, DEFLATED, wbits, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); if (err != Z_OK) { zst->error_function = DEFLATE_INIT_ERROR; return err; } zst->zst_type = DEFLATE_TYPE; do { if (ibuflen > GRAALPYTHON_MAX_SIZE) { zst->zst.avail_in = GRAALPYTHON_MAX_SIZE; ibuflen -= GRAALPYTHON_MAX_SIZE; } else { zst->zst.avail_in = in_len; ibuflen = 0; } flush = ibuflen == 0 ? Z_FINISH : Z_NO_FLUSH; do { obuflen = arrange_output_buffer(zst, obuflen); if (obuflen < 0) { deflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; error_occurred(zst, MEMORY_ERROR); return -2; } err = deflate(&zst->zst, flush); if (err == Z_STREAM_ERROR) { deflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; error_occurred(zst, DEFLATE_ERROR); return err; } } while (zst->zst.avail_out == 0); assert(zst->zst.avail_in == 0); } while (flush != Z_FINISH); assert(err == Z_STREAM_END); err = deflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; if (err != Z_OK) { error_occurred(zst, DEFLATE_END_ERROR); return err; } if (zst->output->size) { zst->output_size = zst->zst.next_out - zst->output->buf; } return Z_OK; } /************************************************ * Decompress * ************************************************/ // nfi_function: name('inflateOffHeap') map('zlib_stream*', 'POINTER') int zlib_inflate_off_heap(zlib_stream *zst, Byte *in, ssize_t in_len, ssize_t buf_size, int wbits) { LOG_INFO("zlib_inflate_off_heap(%p)\n", zst); int err, flush; ssize_t ibuflen = in_len, obuflen = buf_size; zst->zst.next_in = in; err = inflateInit2(&zst->zst, wbits); if (err != Z_OK) { zst->error_function = INFLATE_INIT_ERROR; return err; } zst->zst_type = INFLATE_TYPE; do { if (ibuflen > GRAALPYTHON_MAX_SIZE) { zst->zst.avail_in = GRAALPYTHON_MAX_SIZE; ibuflen -= GRAALPYTHON_MAX_SIZE; } else { zst->zst.avail_in = ibuflen; ibuflen = 0; } flush = ibuflen == 0 ? Z_FINISH : Z_NO_FLUSH; do { obuflen = arrange_output_buffer(zst, obuflen); if (obuflen < 0) { inflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; error_occurred(zst, MEMORY_ERROR); return -2; } err = inflate(&zst->zst, flush); switch (err) { case Z_OK: case Z_BUF_ERROR: case Z_STREAM_END: break; default: inflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; error_occurred(zst, INFLATE_ERROR); return err; } } while (zst->zst.avail_out == 0); } while (err != Z_STREAM_END && ibuflen != 0); if (err != Z_STREAM_END) { inflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; error_occurred(zst, INFLATE_ERROR); return err; } err = inflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; if (err != Z_OK) { error_occurred(zst, INFLATE_END_ERROR); return err; } if (zst->output->size) { zst->output_size = zst->zst.next_out - zst->output->buf; } return Z_OK; } /************************************************ * Compress Object * ************************************************/ // nfi_function: name('compressObjInitWithDict') map('zlib_stream*', 'POINTER') int zlib_Compress_init(zlib_stream *zst, int level, int method, int wbits, int memLevel, int strategy, Byte *dict, size_t dict_len) { LOG_INFO("zlib_Compress_init(%p)\n", zst); int err = deflateInit2(&zst->zst, level, method, wbits, memLevel, strategy); if (err != Z_OK) { zst->error_function = DEFLATE_OBJ_ERROR; return err; } zst->zst_type = DEFLATE_TYPE; zst->comp->is_initialised = 1; if (dict != NULL) { zlib_set_zdict(zst, dict, dict_len); off_heap_buffer* zdict = zst->comp->zdict; err = deflateSetDictionary(&zst->zst, zdict->buf, zdict->size); if (err != Z_OK) { zst->error_function = DEFLATE_DICT_ERROR; return err; } } return Z_OK; } // nfi_function: name('compressObjInit') map('zlib_stream*', 'POINTER') int zlib_Compress_init_no_dict(zlib_stream *zst, int level, int method, int wbits, int memLevel, int strategy) { return zlib_Compress_init(zst, level, method, wbits, memLevel, strategy, NULL, 0); } // nfi_function: name('compressObj') map('zlib_stream*', 'POINTER') int zlib_Compress_obj(zlib_stream *zst, Byte *in, ssize_t in_len, ssize_t buf_size) { LOG_INFO("zlib_Compress_obj(%p, in_len: %zd, buf_size: %zd)\n", zst, in_len, buf_size); clear_output(zst); int err; ssize_t ibuflen = in_len, obuflen = buf_size; zst->zst.next_in = in; do { if (ibuflen > GRAALPYTHON_MAX_SIZE) { zst->zst.avail_in = GRAALPYTHON_MAX_SIZE; ibuflen -= GRAALPYTHON_MAX_SIZE; } else { zst->zst.avail_in = in_len; ibuflen = 0; } do { obuflen = arrange_output_buffer(zst, obuflen); if (obuflen < 0) { error_occurred(zst, MEMORY_ERROR); return -2; } err = deflate(&zst->zst, Z_NO_FLUSH); if (err == Z_STREAM_ERROR) { error_occurred(zst, DEFLATE_ERROR); return err; } } while (zst->zst.avail_out == 0); assert(zst->zst.avail_in == 0); } while (ibuflen != 0); zst->comp->next_in_index = zst->zst.next_in - in; if (zst->output->size) { zst->output_size = zst->zst.next_out - zst->output->buf; } return Z_OK; } // nfi_function: name('compressObjFlush') map('zlib_stream*', 'POINTER') int zlib_Compress_flush(zlib_stream *zst, Byte *in, ssize_t buf_size, int mode) { LOG_INFO("zlib_Compress_flush(%p, buf_size: %zd)\n", zst, buf_size); clear_output(zst); int err; ssize_t length = buf_size; /* Flushing with Z_NO_FLUSH is a no-op, so there's no point in doing any work at all; just return an empty string. */ // (mq) this should be handled in the java side assert (mode != Z_NO_FLUSH); if(zst->zst.next_in) { zst->zst.next_in = in + zst->comp->next_in_index; } zst->zst.avail_in = 0; do { length = arrange_output_buffer(zst, length); if (length < 0) { error_occurred(zst, MEMORY_ERROR); return -2; } err = deflate(&zst->zst, mode); if (err == Z_STREAM_ERROR) { error_occurred(zst, DEFLATE_ERROR); return err; } } while (zst->zst.avail_out == 0); assert(zst->zst.avail_in == 0); /* If mode is Z_FINISH, we also have to call deflateEnd() to free various data structures. Note we should only get Z_STREAM_END when mode is Z_FINISH, but checking both for safety*/ if (err == Z_STREAM_END && mode == Z_FINISH) { err = deflateEnd(&zst->zst); zst->zst_type = NOT_INITIALIZED; if (err != Z_OK) { error_occurred(zst, DEFLATE_END_ERROR); return err; } else { // notify the java-end to release memory. zst->comp->is_initialised = 0; } /* We will only get Z_BUF_ERROR if the output buffer was full but there wasn't more output when we tried again, so it is not an error condition. */ } else if (err != Z_OK && err != Z_BUF_ERROR) { error_occurred(zst, DEFLATE_FLUSH_ERROR); return err; } if (zst->output->size) { zst->output_size = zst->zst.next_out - zst->output->buf; } return Z_OK; } // nfi_function: name('compressObjCopy') map('zlib_stream*', 'POINTER') int zlib_Compress_copy(zlib_stream *zst, zlib_stream *new_copy) { LOG_INFO("zlib_Compress_copy(%p)\n", zst); int err = deflateCopy(&new_copy->zst, &zst->zst); if (err != Z_OK) { zst->error_function = DEFLATE_COPY_ERROR; return err; } new_copy->comp->next_in_index = zst->comp->next_in_index; new_copy->comp->unused_data = zlib_get_ref(zst->comp->unused_data); new_copy->comp->unconsumed_tail = zlib_get_ref(zst->comp->unconsumed_tail); new_copy->comp->zdict = zlib_get_ref(zst->comp->zdict); new_copy->comp->eof = zst->comp->eof; /* Mark it as being initialized */ new_copy->comp->is_initialised = 1; return Z_OK; } /************************************************ * Decompress Object * ************************************************/ // nfi_function: name('decompressObjInitWithDict') map('zlib_stream*', 'POINTER') int zlib_Decompress_init(zlib_stream *zst, int wbits, Byte *dict, size_t dict_len) { LOG_INFO("zlib_Decompress_init(%p)\n", zst); int err = inflateInit2(&zst->zst, wbits); if (err != Z_OK) { zst->error_function = INFLATE_OBJ_ERROR; return err; } zst->zst_type = INFLATE_TYPE; zst->comp->is_initialised = 1; if (dict != NULL) { zlib_set_zdict(zst, dict, dict_len); } off_heap_buffer* zdict = zst->comp->zdict; if (dict != NULL && wbits < 0) { err = inflateSetDictionary(&zst->zst, zdict->buf, zdict->size); if (err != Z_OK) { zst->error_function = INFLATE_DICT_ERROR; return err; } } return Z_OK; } // nfi_function: name('decompressObjInit') map('zlib_stream*', 'POINTER') int zlib_Decompress_init_no_dict(zlib_stream *zst, int wbits) { return zlib_Decompress_init(zst, wbits, NULL, 0); } static int save_unconsumed_input(zlib_stream *zst, Byte *in, size_t in_len, int err) { if (err == Z_STREAM_END) { /* The end of the compressed data has been reached. Store the leftover input data in self->unused_data. */ if (zst->zst.avail_in > 0) { LOG_INFO("save_unconsumed_input(%p) unused_data\n", zst); off_heap_buffer *new_data; size_t old_size, new_size, left_size; old_size = zst->comp->unused_data->size; left_size = in + in_len - zst->zst.next_in; if (left_size > (GRAALPYTHON_MAX_SIZE - old_size)) { error_occurred(zst, MEMORY_ERROR); return -2; } new_size = old_size + left_size; new_data = zlib_allocate_buffer(new_size); if (new_data == NULL) { error_occurred(zst, MEMORY_ERROR); return -1; } memcpy(new_data->buf, zst->comp->unused_data->buf, old_size); memcpy(new_data->buf + old_size, zst->zst.next_in, left_size); zlib_release_buffer(zst->comp->unused_data); zst->comp->unused_data = new_data; zst->zst.avail_in = 0; } } if (zst->zst.avail_in > 0 || zst->comp->unconsumed_tail->size) { /* This code handles two distinct cases: 1. Output limit was reached. Save leftover input in unconsumed_tail. 2. All input data was consumed. Clear unconsumed_tail. */ LOG_INFO("save_unconsumed_input(%p) unconsumed_tail\n", zst); size_t left_size = in + in_len - zst->zst.next_in; off_heap_buffer *new_data = zlib_create_copy_buffer(zst->zst.next_in, left_size); if (new_data == NULL) { zst->error_function = MEMORY_ERROR; return -1; } zlib_release_buffer(zst->comp->unconsumed_tail); zst->comp->unconsumed_tail = new_data; } return Z_OK; } // nfi_function: name('decompressObj') map('zlib_stream*', 'POINTER') int zlib_Decompress_obj(zlib_stream *zst, Byte *in, ssize_t in_len, ssize_t buf_size, ssize_t max_length) { LOG_INFO("zlib_Decompress_obj(%p, in_len: %zd, buf_size: %zd, max_length: %zd)\n", zst, in_len, buf_size, max_length); clear_output(zst); int err = Z_OK, serr; ssize_t ibuflen = in_len, obuflen = buf_size, hard_limit; zst->zst.next_in = in; off_heap_buffer* zdict = zst->comp->zdict; if (max_length == 0) hard_limit = GRAALPYTHON_MAX_SIZE; else hard_limit = max_length; /* limit amount of data allocated to max_length */ if (max_length && obuflen > max_length) { obuflen = max_length; } do { if (ibuflen > GRAALPYTHON_MAX_SIZE) { zst->zst.avail_in = GRAALPYTHON_MAX_SIZE; ibuflen -= GRAALPYTHON_MAX_SIZE; } else { zst->zst.avail_in = ibuflen; ibuflen = 0; } |
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