The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 1 | |
| 2 | /*-----------------------------------------------------------*/ |
| 3 | /*--- A block-sorting, lossless compressor bzip2.c ---*/ |
| 4 | /*-----------------------------------------------------------*/ |
| 5 | |
| 6 | /* ------------------------------------------------------------------ |
| 7 | This file is part of bzip2/libbzip2, a program and library for |
| 8 | lossless, block-sorting data compression. |
| 9 | |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 10 | bzip2/libbzip2 version 1.0.8 of 13 July 2019 |
| 11 | Copyright (C) 1996-2019 Julian Seward <jseward@acm.org> |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 12 | |
| 13 | Please read the WARNING, DISCLAIMER and PATENTS sections in the |
| 14 | README file. |
| 15 | |
| 16 | This program is released under the terms of the license contained |
| 17 | in the file LICENSE. |
| 18 | ------------------------------------------------------------------ */ |
| 19 | |
| 20 | |
| 21 | /* Place a 1 beside your platform, and 0 elsewhere. |
| 22 | Generic 32-bit Unix. |
| 23 | Also works on 64-bit Unix boxes. |
| 24 | This is the default. |
| 25 | */ |
| 26 | #define BZ_UNIX 1 |
| 27 | |
| 28 | /*-- |
| 29 | Win32, as seen by Jacob Navia's excellent |
| 30 | port of (Chris Fraser & David Hanson)'s excellent |
| 31 | lcc compiler. Or with MS Visual C. |
| 32 | This is selected automatically if compiled by a compiler which |
| 33 | defines _WIN32, not including the Cygwin GCC. |
| 34 | --*/ |
| 35 | #define BZ_LCCWIN32 0 |
| 36 | |
| 37 | #if defined(_WIN32) && !defined(__CYGWIN__) |
| 38 | #undef BZ_LCCWIN32 |
| 39 | #define BZ_LCCWIN32 1 |
| 40 | #undef BZ_UNIX |
| 41 | #define BZ_UNIX 0 |
| 42 | #endif |
| 43 | |
| 44 | |
| 45 | /*---------------------------------------------*/ |
| 46 | /*-- |
| 47 | Some stuff for all platforms. |
| 48 | --*/ |
| 49 | |
| 50 | #include <stdio.h> |
| 51 | #include <stdlib.h> |
| 52 | #include <string.h> |
| 53 | #include <signal.h> |
| 54 | #include <math.h> |
| 55 | #include <errno.h> |
| 56 | #include <ctype.h> |
| 57 | #include "bzlib.h" |
| 58 | |
| 59 | #define ERROR_IF_EOF(i) { if ((i) == EOF) ioError(); } |
| 60 | #define ERROR_IF_NOT_ZERO(i) { if ((i) != 0) ioError(); } |
| 61 | #define ERROR_IF_MINUS_ONE(i) { if ((i) == (-1)) ioError(); } |
| 62 | |
| 63 | |
| 64 | /*---------------------------------------------*/ |
| 65 | /*-- |
| 66 | Platform-specific stuff. |
| 67 | --*/ |
| 68 | |
| 69 | #if BZ_UNIX |
| 70 | # include <fcntl.h> |
| 71 | # include <sys/types.h> |
| 72 | # include <utime.h> |
| 73 | # include <unistd.h> |
| 74 | # include <sys/stat.h> |
| 75 | # include <sys/times.h> |
| 76 | |
| 77 | # define PATH_SEP '/' |
| 78 | # define MY_LSTAT lstat |
| 79 | # define MY_STAT stat |
| 80 | # define MY_S_ISREG S_ISREG |
| 81 | # define MY_S_ISDIR S_ISDIR |
| 82 | |
| 83 | # define APPEND_FILESPEC(root, name) \ |
| 84 | root=snocString((root), (name)) |
| 85 | |
| 86 | # define APPEND_FLAG(root, name) \ |
| 87 | root=snocString((root), (name)) |
| 88 | |
| 89 | # define SET_BINARY_MODE(fd) /**/ |
| 90 | |
| 91 | # ifdef __GNUC__ |
| 92 | # define NORETURN __attribute__ ((noreturn)) |
| 93 | # else |
| 94 | # define NORETURN /**/ |
| 95 | # endif |
| 96 | |
| 97 | # ifdef __DJGPP__ |
| 98 | # include <io.h> |
| 99 | # include <fcntl.h> |
| 100 | # undef MY_LSTAT |
| 101 | # undef MY_STAT |
| 102 | # define MY_LSTAT stat |
| 103 | # define MY_STAT stat |
| 104 | # undef SET_BINARY_MODE |
| 105 | # define SET_BINARY_MODE(fd) \ |
| 106 | do { \ |
| 107 | int retVal = setmode ( fileno ( fd ), \ |
| 108 | O_BINARY ); \ |
| 109 | ERROR_IF_MINUS_ONE ( retVal ); \ |
| 110 | } while ( 0 ) |
| 111 | # endif |
| 112 | |
| 113 | # ifdef __CYGWIN__ |
| 114 | # include <io.h> |
| 115 | # include <fcntl.h> |
| 116 | # undef SET_BINARY_MODE |
| 117 | # define SET_BINARY_MODE(fd) \ |
| 118 | do { \ |
| 119 | int retVal = setmode ( fileno ( fd ), \ |
| 120 | O_BINARY ); \ |
| 121 | ERROR_IF_MINUS_ONE ( retVal ); \ |
| 122 | } while ( 0 ) |
| 123 | # endif |
| 124 | #endif /* BZ_UNIX */ |
| 125 | |
| 126 | |
| 127 | |
| 128 | #if BZ_LCCWIN32 |
| 129 | # include <io.h> |
| 130 | # include <fcntl.h> |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 131 | # include <sys/stat.h> |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 132 | |
| 133 | # define NORETURN /**/ |
| 134 | # define PATH_SEP '\\' |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 135 | # define MY_LSTAT _stati64 |
| 136 | # define MY_STAT _stati64 |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 137 | # define MY_S_ISREG(x) ((x) & _S_IFREG) |
| 138 | # define MY_S_ISDIR(x) ((x) & _S_IFDIR) |
| 139 | |
| 140 | # define APPEND_FLAG(root, name) \ |
| 141 | root=snocString((root), (name)) |
| 142 | |
| 143 | # define APPEND_FILESPEC(root, name) \ |
| 144 | root = snocString ((root), (name)) |
| 145 | |
| 146 | # define SET_BINARY_MODE(fd) \ |
| 147 | do { \ |
| 148 | int retVal = setmode ( fileno ( fd ), \ |
| 149 | O_BINARY ); \ |
| 150 | ERROR_IF_MINUS_ONE ( retVal ); \ |
| 151 | } while ( 0 ) |
| 152 | |
| 153 | #endif /* BZ_LCCWIN32 */ |
| 154 | |
| 155 | |
| 156 | /*---------------------------------------------*/ |
| 157 | /*-- |
| 158 | Some more stuff for all platforms :-) |
| 159 | --*/ |
| 160 | |
| 161 | typedef char Char; |
| 162 | typedef unsigned char Bool; |
| 163 | typedef unsigned char UChar; |
| 164 | typedef int Int32; |
| 165 | typedef unsigned int UInt32; |
| 166 | typedef short Int16; |
| 167 | typedef unsigned short UInt16; |
| 168 | |
| 169 | #define True ((Bool)1) |
| 170 | #define False ((Bool)0) |
| 171 | |
| 172 | /*-- |
| 173 | IntNative is your platform's `native' int size. |
| 174 | Only here to avoid probs with 64-bit platforms. |
| 175 | --*/ |
| 176 | typedef int IntNative; |
| 177 | |
| 178 | |
| 179 | /*---------------------------------------------------*/ |
| 180 | /*--- Misc (file handling) data decls ---*/ |
| 181 | /*---------------------------------------------------*/ |
| 182 | |
| 183 | Int32 verbosity; |
| 184 | Bool keepInputFiles, smallMode, deleteOutputOnInterrupt; |
| 185 | Bool forceOverwrite, testFailsExist, unzFailsExist, noisy; |
| 186 | Int32 numFileNames, numFilesProcessed, blockSize100k; |
| 187 | Int32 exitValue; |
| 188 | |
| 189 | /*-- source modes; F==file, I==stdin, O==stdout --*/ |
| 190 | #define SM_I2O 1 |
| 191 | #define SM_F2O 2 |
| 192 | #define SM_F2F 3 |
| 193 | |
| 194 | /*-- operation modes --*/ |
| 195 | #define OM_Z 1 |
| 196 | #define OM_UNZ 2 |
| 197 | #define OM_TEST 3 |
| 198 | |
| 199 | Int32 opMode; |
| 200 | Int32 srcMode; |
| 201 | |
| 202 | #define FILE_NAME_LEN 1034 |
| 203 | |
| 204 | Int32 longestFileName; |
| 205 | Char inName [FILE_NAME_LEN]; |
| 206 | Char outName[FILE_NAME_LEN]; |
| 207 | Char tmpName[FILE_NAME_LEN]; |
| 208 | Char *progName; |
| 209 | Char progNameReally[FILE_NAME_LEN]; |
| 210 | FILE *outputHandleJustInCase; |
| 211 | Int32 workFactor; |
| 212 | |
| 213 | static void panic ( const Char* ) NORETURN; |
| 214 | static void ioError ( void ) NORETURN; |
| 215 | static void outOfMemory ( void ) NORETURN; |
| 216 | static void configError ( void ) NORETURN; |
| 217 | static void crcError ( void ) NORETURN; |
| 218 | static void cleanUpAndFail ( Int32 ) NORETURN; |
| 219 | static void compressedStreamEOF ( void ) NORETURN; |
| 220 | |
| 221 | static void copyFileName ( Char*, Char* ); |
| 222 | static void* myMalloc ( Int32 ); |
| 223 | static void applySavedFileAttrToOutputFile ( IntNative fd ); |
| 224 | |
| 225 | |
| 226 | |
| 227 | /*---------------------------------------------------*/ |
| 228 | /*--- An implementation of 64-bit ints. Sigh. ---*/ |
| 229 | /*--- Roll on widespread deployment of ANSI C9X ! ---*/ |
| 230 | /*---------------------------------------------------*/ |
| 231 | |
| 232 | typedef |
| 233 | struct { UChar b[8]; } |
| 234 | UInt64; |
| 235 | |
| 236 | |
| 237 | static |
| 238 | void uInt64_from_UInt32s ( UInt64* n, UInt32 lo32, UInt32 hi32 ) |
| 239 | { |
| 240 | n->b[7] = (UChar)((hi32 >> 24) & 0xFF); |
| 241 | n->b[6] = (UChar)((hi32 >> 16) & 0xFF); |
| 242 | n->b[5] = (UChar)((hi32 >> 8) & 0xFF); |
| 243 | n->b[4] = (UChar) (hi32 & 0xFF); |
| 244 | n->b[3] = (UChar)((lo32 >> 24) & 0xFF); |
| 245 | n->b[2] = (UChar)((lo32 >> 16) & 0xFF); |
| 246 | n->b[1] = (UChar)((lo32 >> 8) & 0xFF); |
| 247 | n->b[0] = (UChar) (lo32 & 0xFF); |
| 248 | } |
| 249 | |
| 250 | |
| 251 | static |
| 252 | double uInt64_to_double ( UInt64* n ) |
| 253 | { |
| 254 | Int32 i; |
| 255 | double base = 1.0; |
| 256 | double sum = 0.0; |
| 257 | for (i = 0; i < 8; i++) { |
| 258 | sum += base * (double)(n->b[i]); |
| 259 | base *= 256.0; |
| 260 | } |
| 261 | return sum; |
| 262 | } |
| 263 | |
| 264 | |
| 265 | static |
| 266 | Bool uInt64_isZero ( UInt64* n ) |
| 267 | { |
| 268 | Int32 i; |
| 269 | for (i = 0; i < 8; i++) |
| 270 | if (n->b[i] != 0) return 0; |
| 271 | return 1; |
| 272 | } |
| 273 | |
| 274 | |
| 275 | /* Divide *n by 10, and return the remainder. */ |
| 276 | static |
| 277 | Int32 uInt64_qrm10 ( UInt64* n ) |
| 278 | { |
| 279 | UInt32 rem, tmp; |
| 280 | Int32 i; |
| 281 | rem = 0; |
| 282 | for (i = 7; i >= 0; i--) { |
| 283 | tmp = rem * 256 + n->b[i]; |
| 284 | n->b[i] = tmp / 10; |
| 285 | rem = tmp % 10; |
| 286 | } |
| 287 | return rem; |
| 288 | } |
| 289 | |
| 290 | |
| 291 | /* ... and the Whole Entire Point of all this UInt64 stuff is |
| 292 | so that we can supply the following function. |
| 293 | */ |
| 294 | static |
| 295 | void uInt64_toAscii ( char* outbuf, UInt64* n ) |
| 296 | { |
| 297 | Int32 i, q; |
| 298 | UChar buf[32]; |
| 299 | Int32 nBuf = 0; |
| 300 | UInt64 n_copy = *n; |
| 301 | do { |
| 302 | q = uInt64_qrm10 ( &n_copy ); |
| 303 | buf[nBuf] = q + '0'; |
| 304 | nBuf++; |
| 305 | } while (!uInt64_isZero(&n_copy)); |
| 306 | outbuf[nBuf] = 0; |
| 307 | for (i = 0; i < nBuf; i++) |
| 308 | outbuf[i] = buf[nBuf-i-1]; |
| 309 | } |
| 310 | |
| 311 | |
| 312 | /*---------------------------------------------------*/ |
| 313 | /*--- Processing of complete files and streams ---*/ |
| 314 | /*---------------------------------------------------*/ |
| 315 | |
| 316 | /*---------------------------------------------*/ |
| 317 | static |
| 318 | Bool myfeof ( FILE* f ) |
| 319 | { |
| 320 | Int32 c = fgetc ( f ); |
| 321 | if (c == EOF) return True; |
| 322 | ungetc ( c, f ); |
| 323 | return False; |
| 324 | } |
| 325 | |
| 326 | |
| 327 | /*---------------------------------------------*/ |
| 328 | static |
| 329 | void compressStream ( FILE *stream, FILE *zStream ) |
| 330 | { |
| 331 | BZFILE* bzf = NULL; |
| 332 | UChar ibuf[5000]; |
| 333 | Int32 nIbuf; |
| 334 | UInt32 nbytes_in_lo32, nbytes_in_hi32; |
| 335 | UInt32 nbytes_out_lo32, nbytes_out_hi32; |
| 336 | Int32 bzerr, bzerr_dummy, ret; |
| 337 | |
| 338 | SET_BINARY_MODE(stream); |
| 339 | SET_BINARY_MODE(zStream); |
| 340 | |
| 341 | if (ferror(stream)) goto errhandler_io; |
| 342 | if (ferror(zStream)) goto errhandler_io; |
| 343 | |
| 344 | bzf = BZ2_bzWriteOpen ( &bzerr, zStream, |
| 345 | blockSize100k, verbosity, workFactor ); |
| 346 | if (bzerr != BZ_OK) goto errhandler; |
| 347 | |
| 348 | if (verbosity >= 2) fprintf ( stderr, "\n" ); |
| 349 | |
| 350 | while (True) { |
| 351 | |
| 352 | if (myfeof(stream)) break; |
| 353 | nIbuf = fread ( ibuf, sizeof(UChar), 5000, stream ); |
| 354 | if (ferror(stream)) goto errhandler_io; |
| 355 | if (nIbuf > 0) BZ2_bzWrite ( &bzerr, bzf, (void*)ibuf, nIbuf ); |
| 356 | if (bzerr != BZ_OK) goto errhandler; |
| 357 | |
| 358 | } |
| 359 | |
| 360 | BZ2_bzWriteClose64 ( &bzerr, bzf, 0, |
| 361 | &nbytes_in_lo32, &nbytes_in_hi32, |
| 362 | &nbytes_out_lo32, &nbytes_out_hi32 ); |
| 363 | if (bzerr != BZ_OK) goto errhandler; |
| 364 | |
| 365 | if (ferror(zStream)) goto errhandler_io; |
| 366 | ret = fflush ( zStream ); |
| 367 | if (ret == EOF) goto errhandler_io; |
| 368 | if (zStream != stdout) { |
| 369 | Int32 fd = fileno ( zStream ); |
| 370 | if (fd < 0) goto errhandler_io; |
| 371 | applySavedFileAttrToOutputFile ( fd ); |
| 372 | ret = fclose ( zStream ); |
| 373 | outputHandleJustInCase = NULL; |
| 374 | if (ret == EOF) goto errhandler_io; |
| 375 | } |
| 376 | outputHandleJustInCase = NULL; |
| 377 | if (ferror(stream)) goto errhandler_io; |
| 378 | ret = fclose ( stream ); |
| 379 | if (ret == EOF) goto errhandler_io; |
| 380 | |
| 381 | if (verbosity >= 1) { |
| 382 | if (nbytes_in_lo32 == 0 && nbytes_in_hi32 == 0) { |
| 383 | fprintf ( stderr, " no data compressed.\n"); |
| 384 | } else { |
| 385 | Char buf_nin[32], buf_nout[32]; |
| 386 | UInt64 nbytes_in, nbytes_out; |
| 387 | double nbytes_in_d, nbytes_out_d; |
| 388 | uInt64_from_UInt32s ( &nbytes_in, |
| 389 | nbytes_in_lo32, nbytes_in_hi32 ); |
| 390 | uInt64_from_UInt32s ( &nbytes_out, |
| 391 | nbytes_out_lo32, nbytes_out_hi32 ); |
| 392 | nbytes_in_d = uInt64_to_double ( &nbytes_in ); |
| 393 | nbytes_out_d = uInt64_to_double ( &nbytes_out ); |
| 394 | uInt64_toAscii ( buf_nin, &nbytes_in ); |
| 395 | uInt64_toAscii ( buf_nout, &nbytes_out ); |
| 396 | fprintf ( stderr, "%6.3f:1, %6.3f bits/byte, " |
| 397 | "%5.2f%% saved, %s in, %s out.\n", |
| 398 | nbytes_in_d / nbytes_out_d, |
| 399 | (8.0 * nbytes_out_d) / nbytes_in_d, |
| 400 | 100.0 * (1.0 - nbytes_out_d / nbytes_in_d), |
| 401 | buf_nin, |
| 402 | buf_nout |
| 403 | ); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | return; |
| 408 | |
| 409 | errhandler: |
| 410 | BZ2_bzWriteClose64 ( &bzerr_dummy, bzf, 1, |
| 411 | &nbytes_in_lo32, &nbytes_in_hi32, |
| 412 | &nbytes_out_lo32, &nbytes_out_hi32 ); |
| 413 | switch (bzerr) { |
| 414 | case BZ_CONFIG_ERROR: |
| 415 | configError(); break; |
| 416 | case BZ_MEM_ERROR: |
| 417 | outOfMemory (); break; |
| 418 | case BZ_IO_ERROR: |
| 419 | errhandler_io: |
| 420 | ioError(); break; |
| 421 | default: |
| 422 | panic ( "compress:unexpected error" ); |
| 423 | } |
| 424 | |
| 425 | panic ( "compress:end" ); |
| 426 | /*notreached*/ |
| 427 | } |
| 428 | |
| 429 | |
| 430 | |
| 431 | /*---------------------------------------------*/ |
| 432 | static |
| 433 | Bool uncompressStream ( FILE *zStream, FILE *stream ) |
| 434 | { |
| 435 | BZFILE* bzf = NULL; |
| 436 | Int32 bzerr, bzerr_dummy, ret, nread, streamNo, i; |
| 437 | UChar obuf[5000]; |
| 438 | UChar unused[BZ_MAX_UNUSED]; |
| 439 | Int32 nUnused; |
| 440 | void* unusedTmpV; |
| 441 | UChar* unusedTmp; |
| 442 | |
| 443 | nUnused = 0; |
| 444 | streamNo = 0; |
| 445 | |
| 446 | SET_BINARY_MODE(stream); |
| 447 | SET_BINARY_MODE(zStream); |
| 448 | |
| 449 | if (ferror(stream)) goto errhandler_io; |
| 450 | if (ferror(zStream)) goto errhandler_io; |
| 451 | |
| 452 | while (True) { |
| 453 | |
| 454 | bzf = BZ2_bzReadOpen ( |
| 455 | &bzerr, zStream, verbosity, |
| 456 | (int)smallMode, unused, nUnused |
| 457 | ); |
| 458 | if (bzf == NULL || bzerr != BZ_OK) goto errhandler; |
| 459 | streamNo++; |
| 460 | |
| 461 | while (bzerr == BZ_OK) { |
| 462 | nread = BZ2_bzRead ( &bzerr, bzf, obuf, 5000 ); |
| 463 | if (bzerr == BZ_DATA_ERROR_MAGIC) goto trycat; |
| 464 | if ((bzerr == BZ_OK || bzerr == BZ_STREAM_END) && nread > 0) |
| 465 | fwrite ( obuf, sizeof(UChar), nread, stream ); |
| 466 | if (ferror(stream)) goto errhandler_io; |
| 467 | } |
| 468 | if (bzerr != BZ_STREAM_END) goto errhandler; |
| 469 | |
| 470 | BZ2_bzReadGetUnused ( &bzerr, bzf, &unusedTmpV, &nUnused ); |
| 471 | if (bzerr != BZ_OK) panic ( "decompress:bzReadGetUnused" ); |
| 472 | |
| 473 | unusedTmp = (UChar*)unusedTmpV; |
| 474 | for (i = 0; i < nUnused; i++) unused[i] = unusedTmp[i]; |
| 475 | |
| 476 | BZ2_bzReadClose ( &bzerr, bzf ); |
| 477 | if (bzerr != BZ_OK) panic ( "decompress:bzReadGetUnused" ); |
| 478 | |
| 479 | if (nUnused == 0 && myfeof(zStream)) break; |
| 480 | } |
| 481 | |
| 482 | closeok: |
| 483 | if (ferror(zStream)) goto errhandler_io; |
| 484 | if (stream != stdout) { |
| 485 | Int32 fd = fileno ( stream ); |
| 486 | if (fd < 0) goto errhandler_io; |
| 487 | applySavedFileAttrToOutputFile ( fd ); |
| 488 | } |
| 489 | ret = fclose ( zStream ); |
| 490 | if (ret == EOF) goto errhandler_io; |
| 491 | |
| 492 | if (ferror(stream)) goto errhandler_io; |
| 493 | ret = fflush ( stream ); |
| 494 | if (ret != 0) goto errhandler_io; |
| 495 | if (stream != stdout) { |
| 496 | ret = fclose ( stream ); |
| 497 | outputHandleJustInCase = NULL; |
| 498 | if (ret == EOF) goto errhandler_io; |
| 499 | } |
| 500 | outputHandleJustInCase = NULL; |
| 501 | if (verbosity >= 2) fprintf ( stderr, "\n " ); |
| 502 | return True; |
| 503 | |
| 504 | trycat: |
| 505 | if (forceOverwrite) { |
| 506 | rewind(zStream); |
| 507 | while (True) { |
| 508 | if (myfeof(zStream)) break; |
| 509 | nread = fread ( obuf, sizeof(UChar), 5000, zStream ); |
| 510 | if (ferror(zStream)) goto errhandler_io; |
| 511 | if (nread > 0) fwrite ( obuf, sizeof(UChar), nread, stream ); |
| 512 | if (ferror(stream)) goto errhandler_io; |
| 513 | } |
| 514 | goto closeok; |
| 515 | } |
| 516 | |
| 517 | errhandler: |
| 518 | BZ2_bzReadClose ( &bzerr_dummy, bzf ); |
| 519 | switch (bzerr) { |
| 520 | case BZ_CONFIG_ERROR: |
| 521 | configError(); break; |
| 522 | case BZ_IO_ERROR: |
| 523 | errhandler_io: |
| 524 | ioError(); break; |
| 525 | case BZ_DATA_ERROR: |
| 526 | crcError(); |
| 527 | case BZ_MEM_ERROR: |
| 528 | outOfMemory(); |
| 529 | case BZ_UNEXPECTED_EOF: |
| 530 | compressedStreamEOF(); |
| 531 | case BZ_DATA_ERROR_MAGIC: |
| 532 | if (zStream != stdin) fclose(zStream); |
| 533 | if (stream != stdout) fclose(stream); |
| 534 | if (streamNo == 1) { |
| 535 | return False; |
| 536 | } else { |
| 537 | if (noisy) |
| 538 | fprintf ( stderr, |
| 539 | "\n%s: %s: trailing garbage after EOF ignored\n", |
| 540 | progName, inName ); |
| 541 | return True; |
| 542 | } |
| 543 | default: |
| 544 | panic ( "decompress:unexpected error" ); |
| 545 | } |
| 546 | |
| 547 | panic ( "decompress:end" ); |
| 548 | return True; /*notreached*/ |
| 549 | } |
| 550 | |
| 551 | |
| 552 | /*---------------------------------------------*/ |
| 553 | static |
| 554 | Bool testStream ( FILE *zStream ) |
| 555 | { |
| 556 | BZFILE* bzf = NULL; |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 557 | Int32 bzerr, bzerr_dummy, ret, streamNo, i; |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 558 | UChar obuf[5000]; |
| 559 | UChar unused[BZ_MAX_UNUSED]; |
| 560 | Int32 nUnused; |
| 561 | void* unusedTmpV; |
| 562 | UChar* unusedTmp; |
| 563 | |
| 564 | nUnused = 0; |
| 565 | streamNo = 0; |
| 566 | |
| 567 | SET_BINARY_MODE(zStream); |
| 568 | if (ferror(zStream)) goto errhandler_io; |
| 569 | |
| 570 | while (True) { |
| 571 | |
| 572 | bzf = BZ2_bzReadOpen ( |
| 573 | &bzerr, zStream, verbosity, |
| 574 | (int)smallMode, unused, nUnused |
| 575 | ); |
| 576 | if (bzf == NULL || bzerr != BZ_OK) goto errhandler; |
| 577 | streamNo++; |
| 578 | |
| 579 | while (bzerr == BZ_OK) { |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 580 | BZ2_bzRead ( &bzerr, bzf, obuf, 5000 ); |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 581 | if (bzerr == BZ_DATA_ERROR_MAGIC) goto errhandler; |
| 582 | } |
| 583 | if (bzerr != BZ_STREAM_END) goto errhandler; |
| 584 | |
| 585 | BZ2_bzReadGetUnused ( &bzerr, bzf, &unusedTmpV, &nUnused ); |
| 586 | if (bzerr != BZ_OK) panic ( "test:bzReadGetUnused" ); |
| 587 | |
| 588 | unusedTmp = (UChar*)unusedTmpV; |
| 589 | for (i = 0; i < nUnused; i++) unused[i] = unusedTmp[i]; |
| 590 | |
| 591 | BZ2_bzReadClose ( &bzerr, bzf ); |
| 592 | if (bzerr != BZ_OK) panic ( "test:bzReadGetUnused" ); |
| 593 | if (nUnused == 0 && myfeof(zStream)) break; |
| 594 | |
| 595 | } |
| 596 | |
| 597 | if (ferror(zStream)) goto errhandler_io; |
| 598 | ret = fclose ( zStream ); |
| 599 | if (ret == EOF) goto errhandler_io; |
| 600 | |
| 601 | if (verbosity >= 2) fprintf ( stderr, "\n " ); |
| 602 | return True; |
| 603 | |
| 604 | errhandler: |
| 605 | BZ2_bzReadClose ( &bzerr_dummy, bzf ); |
| 606 | if (verbosity == 0) |
| 607 | fprintf ( stderr, "%s: %s: ", progName, inName ); |
| 608 | switch (bzerr) { |
| 609 | case BZ_CONFIG_ERROR: |
| 610 | configError(); break; |
| 611 | case BZ_IO_ERROR: |
| 612 | errhandler_io: |
| 613 | ioError(); break; |
| 614 | case BZ_DATA_ERROR: |
| 615 | fprintf ( stderr, |
| 616 | "data integrity (CRC) error in data\n" ); |
| 617 | return False; |
| 618 | case BZ_MEM_ERROR: |
| 619 | outOfMemory(); |
| 620 | case BZ_UNEXPECTED_EOF: |
| 621 | fprintf ( stderr, |
| 622 | "file ends unexpectedly\n" ); |
| 623 | return False; |
| 624 | case BZ_DATA_ERROR_MAGIC: |
| 625 | if (zStream != stdin) fclose(zStream); |
| 626 | if (streamNo == 1) { |
| 627 | fprintf ( stderr, |
| 628 | "bad magic number (file not created by bzip2)\n" ); |
| 629 | return False; |
| 630 | } else { |
| 631 | if (noisy) |
| 632 | fprintf ( stderr, |
| 633 | "trailing garbage after EOF ignored\n" ); |
| 634 | return True; |
| 635 | } |
| 636 | default: |
| 637 | panic ( "test:unexpected error" ); |
| 638 | } |
| 639 | |
| 640 | panic ( "test:end" ); |
| 641 | return True; /*notreached*/ |
| 642 | } |
| 643 | |
| 644 | |
| 645 | /*---------------------------------------------------*/ |
| 646 | /*--- Error [non-] handling grunge ---*/ |
| 647 | /*---------------------------------------------------*/ |
| 648 | |
| 649 | /*---------------------------------------------*/ |
| 650 | static |
| 651 | void setExit ( Int32 v ) |
| 652 | { |
| 653 | if (v > exitValue) exitValue = v; |
| 654 | } |
| 655 | |
| 656 | |
| 657 | /*---------------------------------------------*/ |
| 658 | static |
| 659 | void cadvise ( void ) |
| 660 | { |
| 661 | if (noisy) |
| 662 | fprintf ( |
| 663 | stderr, |
| 664 | "\nIt is possible that the compressed file(s) have become corrupted.\n" |
| 665 | "You can use the -tvv option to test integrity of such files.\n\n" |
| 666 | "You can use the `bzip2recover' program to attempt to recover\n" |
| 667 | "data from undamaged sections of corrupted files.\n\n" |
| 668 | ); |
| 669 | } |
| 670 | |
| 671 | |
| 672 | /*---------------------------------------------*/ |
| 673 | static |
| 674 | void showFileNames ( void ) |
| 675 | { |
| 676 | if (noisy) |
| 677 | fprintf ( |
| 678 | stderr, |
| 679 | "\tInput file = %s, output file = %s\n", |
| 680 | inName, outName |
| 681 | ); |
| 682 | } |
| 683 | |
| 684 | |
| 685 | /*---------------------------------------------*/ |
| 686 | static |
| 687 | void cleanUpAndFail ( Int32 ec ) |
| 688 | { |
| 689 | IntNative retVal; |
| 690 | struct MY_STAT statBuf; |
| 691 | |
| 692 | if ( srcMode == SM_F2F |
| 693 | && opMode != OM_TEST |
| 694 | && deleteOutputOnInterrupt ) { |
| 695 | |
| 696 | /* Check whether input file still exists. Delete output file |
| 697 | only if input exists to avoid loss of data. Joerg Prante, 5 |
| 698 | January 2002. (JRS 06-Jan-2002: other changes in 1.0.2 mean |
| 699 | this is less likely to happen. But to be ultra-paranoid, we |
| 700 | do the check anyway.) */ |
| 701 | retVal = MY_STAT ( inName, &statBuf ); |
| 702 | if (retVal == 0) { |
| 703 | if (noisy) |
| 704 | fprintf ( stderr, |
| 705 | "%s: Deleting output file %s, if it exists.\n", |
| 706 | progName, outName ); |
| 707 | if (outputHandleJustInCase != NULL) |
| 708 | fclose ( outputHandleJustInCase ); |
| 709 | retVal = remove ( outName ); |
| 710 | if (retVal != 0) |
| 711 | fprintf ( stderr, |
| 712 | "%s: WARNING: deletion of output file " |
| 713 | "(apparently) failed.\n", |
| 714 | progName ); |
| 715 | } else { |
| 716 | fprintf ( stderr, |
| 717 | "%s: WARNING: deletion of output file suppressed\n", |
| 718 | progName ); |
| 719 | fprintf ( stderr, |
| 720 | "%s: since input file no longer exists. Output file\n", |
| 721 | progName ); |
| 722 | fprintf ( stderr, |
| 723 | "%s: `%s' may be incomplete.\n", |
| 724 | progName, outName ); |
| 725 | fprintf ( stderr, |
| 726 | "%s: I suggest doing an integrity test (bzip2 -tv)" |
| 727 | " of it.\n", |
| 728 | progName ); |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | if (noisy && numFileNames > 0 && numFilesProcessed < numFileNames) { |
| 733 | fprintf ( stderr, |
| 734 | "%s: WARNING: some files have not been processed:\n" |
| 735 | "%s: %d specified on command line, %d not processed yet.\n\n", |
| 736 | progName, progName, |
| 737 | numFileNames, numFileNames - numFilesProcessed ); |
| 738 | } |
| 739 | setExit(ec); |
| 740 | exit(exitValue); |
| 741 | } |
| 742 | |
| 743 | |
| 744 | /*---------------------------------------------*/ |
| 745 | static |
| 746 | void panic ( const Char* s ) |
| 747 | { |
| 748 | fprintf ( stderr, |
| 749 | "\n%s: PANIC -- internal consistency error:\n" |
| 750 | "\t%s\n" |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 751 | "\tThis is a BUG. Please report it to:\n" |
| 752 | "\tbzip2-devel@sourceware.org\n", |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 753 | progName, s ); |
| 754 | showFileNames(); |
| 755 | cleanUpAndFail( 3 ); |
| 756 | } |
| 757 | |
| 758 | |
| 759 | /*---------------------------------------------*/ |
| 760 | static |
| 761 | void crcError ( void ) |
| 762 | { |
| 763 | fprintf ( stderr, |
| 764 | "\n%s: Data integrity error when decompressing.\n", |
| 765 | progName ); |
| 766 | showFileNames(); |
| 767 | cadvise(); |
| 768 | cleanUpAndFail( 2 ); |
| 769 | } |
| 770 | |
| 771 | |
| 772 | /*---------------------------------------------*/ |
| 773 | static |
| 774 | void compressedStreamEOF ( void ) |
| 775 | { |
| 776 | if (noisy) { |
| 777 | fprintf ( stderr, |
| 778 | "\n%s: Compressed file ends unexpectedly;\n\t" |
| 779 | "perhaps it is corrupted? *Possible* reason follows.\n", |
| 780 | progName ); |
| 781 | perror ( progName ); |
| 782 | showFileNames(); |
| 783 | cadvise(); |
| 784 | } |
| 785 | cleanUpAndFail( 2 ); |
| 786 | } |
| 787 | |
| 788 | |
| 789 | /*---------------------------------------------*/ |
| 790 | static |
| 791 | void ioError ( void ) |
| 792 | { |
| 793 | fprintf ( stderr, |
| 794 | "\n%s: I/O or other error, bailing out. " |
| 795 | "Possible reason follows.\n", |
| 796 | progName ); |
| 797 | perror ( progName ); |
| 798 | showFileNames(); |
| 799 | cleanUpAndFail( 1 ); |
| 800 | } |
| 801 | |
| 802 | |
| 803 | /*---------------------------------------------*/ |
| 804 | static |
| 805 | void mySignalCatcher ( IntNative n ) |
| 806 | { |
| 807 | fprintf ( stderr, |
| 808 | "\n%s: Control-C or similar caught, quitting.\n", |
| 809 | progName ); |
| 810 | cleanUpAndFail(1); |
| 811 | } |
| 812 | |
| 813 | |
| 814 | /*---------------------------------------------*/ |
| 815 | static |
| 816 | void mySIGSEGVorSIGBUScatcher ( IntNative n ) |
| 817 | { |
| 818 | if (opMode == OM_Z) |
| 819 | fprintf ( |
| 820 | stderr, |
| 821 | "\n%s: Caught a SIGSEGV or SIGBUS whilst compressing.\n" |
| 822 | "\n" |
| 823 | " Possible causes are (most likely first):\n" |
| 824 | " (1) This computer has unreliable memory or cache hardware\n" |
| 825 | " (a surprisingly common problem; try a different machine.)\n" |
| 826 | " (2) A bug in the compiler used to create this executable\n" |
| 827 | " (unlikely, if you didn't compile bzip2 yourself.)\n" |
| 828 | " (3) A real bug in bzip2 -- I hope this should never be the case.\n" |
| 829 | " The user's manual, Section 4.3, has more info on (1) and (2).\n" |
| 830 | " \n" |
| 831 | " If you suspect this is a bug in bzip2, or are unsure about (1)\n" |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 832 | " or (2), feel free to report it to: bzip2-devel@sourceware.org.\n" |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 833 | " Section 4.3 of the user's manual describes the info a useful\n" |
| 834 | " bug report should have. If the manual is available on your\n" |
| 835 | " system, please try and read it before mailing me. If you don't\n" |
| 836 | " have the manual or can't be bothered to read it, mail me anyway.\n" |
| 837 | "\n", |
| 838 | progName ); |
| 839 | else |
| 840 | fprintf ( |
| 841 | stderr, |
| 842 | "\n%s: Caught a SIGSEGV or SIGBUS whilst decompressing.\n" |
| 843 | "\n" |
| 844 | " Possible causes are (most likely first):\n" |
| 845 | " (1) The compressed data is corrupted, and bzip2's usual checks\n" |
| 846 | " failed to detect this. Try bzip2 -tvv my_file.bz2.\n" |
| 847 | " (2) This computer has unreliable memory or cache hardware\n" |
| 848 | " (a surprisingly common problem; try a different machine.)\n" |
| 849 | " (3) A bug in the compiler used to create this executable\n" |
| 850 | " (unlikely, if you didn't compile bzip2 yourself.)\n" |
| 851 | " (4) A real bug in bzip2 -- I hope this should never be the case.\n" |
| 852 | " The user's manual, Section 4.3, has more info on (2) and (3).\n" |
| 853 | " \n" |
| 854 | " If you suspect this is a bug in bzip2, or are unsure about (2)\n" |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 855 | " or (3), feel free to report it to: bzip2-devel@sourceware.org.\n" |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 856 | " Section 4.3 of the user's manual describes the info a useful\n" |
| 857 | " bug report should have. If the manual is available on your\n" |
| 858 | " system, please try and read it before mailing me. If you don't\n" |
| 859 | " have the manual or can't be bothered to read it, mail me anyway.\n" |
| 860 | "\n", |
| 861 | progName ); |
| 862 | |
| 863 | showFileNames(); |
| 864 | if (opMode == OM_Z) |
| 865 | cleanUpAndFail( 3 ); else |
| 866 | { cadvise(); cleanUpAndFail( 2 ); } |
| 867 | } |
| 868 | |
| 869 | |
| 870 | /*---------------------------------------------*/ |
| 871 | static |
| 872 | void outOfMemory ( void ) |
| 873 | { |
| 874 | fprintf ( stderr, |
| 875 | "\n%s: couldn't allocate enough memory\n", |
| 876 | progName ); |
| 877 | showFileNames(); |
| 878 | cleanUpAndFail(1); |
| 879 | } |
| 880 | |
| 881 | |
| 882 | /*---------------------------------------------*/ |
| 883 | static |
| 884 | void configError ( void ) |
| 885 | { |
| 886 | fprintf ( stderr, |
| 887 | "bzip2: I'm not configured correctly for this platform!\n" |
| 888 | "\tI require Int32, Int16 and Char to have sizes\n" |
| 889 | "\tof 4, 2 and 1 bytes to run properly, and they don't.\n" |
| 890 | "\tProbably you can fix this by defining them correctly,\n" |
| 891 | "\tand recompiling. Bye!\n" ); |
| 892 | setExit(3); |
| 893 | exit(exitValue); |
| 894 | } |
| 895 | |
| 896 | |
| 897 | /*---------------------------------------------------*/ |
| 898 | /*--- The main driver machinery ---*/ |
| 899 | /*---------------------------------------------------*/ |
| 900 | |
| 901 | /* All rather crufty. The main problem is that input files |
| 902 | are stat()d multiple times before use. This should be |
| 903 | cleaned up. |
| 904 | */ |
| 905 | |
| 906 | /*---------------------------------------------*/ |
| 907 | static |
| 908 | void pad ( Char *s ) |
| 909 | { |
| 910 | Int32 i; |
| 911 | if ( (Int32)strlen(s) >= longestFileName ) return; |
| 912 | for (i = 1; i <= longestFileName - (Int32)strlen(s); i++) |
| 913 | fprintf ( stderr, " " ); |
| 914 | } |
| 915 | |
| 916 | |
| 917 | /*---------------------------------------------*/ |
| 918 | static |
| 919 | void copyFileName ( Char* to, Char* from ) |
| 920 | { |
| 921 | if ( strlen(from) > FILE_NAME_LEN-10 ) { |
| 922 | fprintf ( |
| 923 | stderr, |
| 924 | "bzip2: file name\n`%s'\n" |
| 925 | "is suspiciously (more than %d chars) long.\n" |
| 926 | "Try using a reasonable file name instead. Sorry! :-)\n", |
| 927 | from, FILE_NAME_LEN-10 |
| 928 | ); |
| 929 | setExit(1); |
| 930 | exit(exitValue); |
| 931 | } |
| 932 | |
| 933 | strncpy(to,from,FILE_NAME_LEN-10); |
| 934 | to[FILE_NAME_LEN-10]='\0'; |
| 935 | } |
| 936 | |
| 937 | |
| 938 | /*---------------------------------------------*/ |
| 939 | static |
| 940 | Bool fileExists ( Char* name ) |
| 941 | { |
| 942 | FILE *tmp = fopen ( name, "rb" ); |
| 943 | Bool exists = (tmp != NULL); |
| 944 | if (tmp != NULL) fclose ( tmp ); |
| 945 | return exists; |
| 946 | } |
| 947 | |
| 948 | |
| 949 | /*---------------------------------------------*/ |
| 950 | /* Open an output file safely with O_EXCL and good permissions. |
| 951 | This avoids a race condition in versions < 1.0.2, in which |
| 952 | the file was first opened and then had its interim permissions |
| 953 | set safely. We instead use open() to create the file with |
| 954 | the interim permissions required. (--- --- rw-). |
| 955 | |
| 956 | For non-Unix platforms, if we are not worrying about |
| 957 | security issues, simple this simply behaves like fopen. |
| 958 | */ |
| 959 | static |
| 960 | FILE* fopen_output_safely ( Char* name, const char* mode ) |
| 961 | { |
| 962 | # if BZ_UNIX |
| 963 | FILE* fp; |
| 964 | IntNative fh; |
| 965 | fh = open(name, O_WRONLY|O_CREAT|O_EXCL, S_IWUSR|S_IRUSR); |
| 966 | if (fh == -1) return NULL; |
| 967 | fp = fdopen(fh, mode); |
| 968 | if (fp == NULL) close(fh); |
| 969 | return fp; |
| 970 | # else |
| 971 | return fopen(name, mode); |
| 972 | # endif |
| 973 | } |
| 974 | |
| 975 | |
| 976 | /*---------------------------------------------*/ |
| 977 | /*-- |
| 978 | if in doubt, return True |
| 979 | --*/ |
| 980 | static |
| 981 | Bool notAStandardFile ( Char* name ) |
| 982 | { |
| 983 | IntNative i; |
| 984 | struct MY_STAT statBuf; |
| 985 | |
| 986 | i = MY_LSTAT ( name, &statBuf ); |
| 987 | if (i != 0) return True; |
| 988 | if (MY_S_ISREG(statBuf.st_mode)) return False; |
| 989 | return True; |
| 990 | } |
| 991 | |
| 992 | |
| 993 | /*---------------------------------------------*/ |
| 994 | /*-- |
| 995 | rac 11/21/98 see if file has hard links to it |
| 996 | --*/ |
| 997 | static |
| 998 | Int32 countHardLinks ( Char* name ) |
| 999 | { |
| 1000 | IntNative i; |
| 1001 | struct MY_STAT statBuf; |
| 1002 | |
| 1003 | i = MY_LSTAT ( name, &statBuf ); |
| 1004 | if (i != 0) return 0; |
| 1005 | return (statBuf.st_nlink - 1); |
| 1006 | } |
| 1007 | |
| 1008 | |
| 1009 | /*---------------------------------------------*/ |
| 1010 | /* Copy modification date, access date, permissions and owner from the |
| 1011 | source to destination file. We have to copy this meta-info off |
| 1012 | into fileMetaInfo before starting to compress / decompress it, |
| 1013 | because doing it afterwards means we get the wrong access time. |
| 1014 | |
| 1015 | To complicate matters, in compress() and decompress() below, the |
| 1016 | sequence of tests preceding the call to saveInputFileMetaInfo() |
| 1017 | involves calling fileExists(), which in turn establishes its result |
| 1018 | by attempting to fopen() the file, and if successful, immediately |
| 1019 | fclose()ing it again. So we have to assume that the fopen() call |
| 1020 | does not cause the access time field to be updated. |
| 1021 | |
| 1022 | Reading of the man page for stat() (man 2 stat) on RedHat 7.2 seems |
| 1023 | to imply that merely doing open() will not affect the access time. |
| 1024 | Therefore we merely need to hope that the C library only does |
| 1025 | open() as a result of fopen(), and not any kind of read()-ahead |
| 1026 | cleverness. |
| 1027 | |
| 1028 | It sounds pretty fragile to me. Whether this carries across |
| 1029 | robustly to arbitrary Unix-like platforms (or even works robustly |
| 1030 | on this one, RedHat 7.2) is unknown to me. Nevertheless ... |
| 1031 | */ |
| 1032 | #if BZ_UNIX |
| 1033 | static |
| 1034 | struct MY_STAT fileMetaInfo; |
| 1035 | #endif |
| 1036 | |
| 1037 | static |
| 1038 | void saveInputFileMetaInfo ( Char *srcName ) |
| 1039 | { |
| 1040 | # if BZ_UNIX |
| 1041 | IntNative retVal; |
| 1042 | /* Note use of stat here, not lstat. */ |
| 1043 | retVal = MY_STAT( srcName, &fileMetaInfo ); |
| 1044 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1045 | # endif |
| 1046 | } |
| 1047 | |
| 1048 | |
| 1049 | static |
| 1050 | void applySavedTimeInfoToOutputFile ( Char *dstName ) |
| 1051 | { |
| 1052 | # if BZ_UNIX |
| 1053 | IntNative retVal; |
| 1054 | struct utimbuf uTimBuf; |
| 1055 | |
| 1056 | uTimBuf.actime = fileMetaInfo.st_atime; |
| 1057 | uTimBuf.modtime = fileMetaInfo.st_mtime; |
| 1058 | |
| 1059 | retVal = utime ( dstName, &uTimBuf ); |
| 1060 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1061 | # endif |
| 1062 | } |
| 1063 | |
| 1064 | static |
| 1065 | void applySavedFileAttrToOutputFile ( IntNative fd ) |
| 1066 | { |
| 1067 | # if BZ_UNIX |
| 1068 | IntNative retVal; |
| 1069 | |
| 1070 | retVal = fchmod ( fd, fileMetaInfo.st_mode ); |
| 1071 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1072 | |
| 1073 | (void) fchown ( fd, fileMetaInfo.st_uid, fileMetaInfo.st_gid ); |
| 1074 | /* chown() will in many cases return with EPERM, which can |
| 1075 | be safely ignored. |
| 1076 | */ |
| 1077 | # endif |
| 1078 | } |
| 1079 | |
| 1080 | |
| 1081 | /*---------------------------------------------*/ |
| 1082 | static |
| 1083 | Bool containsDubiousChars ( Char* name ) |
| 1084 | { |
| 1085 | # if BZ_UNIX |
| 1086 | /* On unix, files can contain any characters and the file expansion |
| 1087 | * is performed by the shell. |
| 1088 | */ |
| 1089 | return False; |
| 1090 | # else /* ! BZ_UNIX */ |
| 1091 | /* On non-unix (Win* platforms), wildcard characters are not allowed in |
| 1092 | * filenames. |
| 1093 | */ |
| 1094 | for (; *name != '\0'; name++) |
| 1095 | if (*name == '?' || *name == '*') return True; |
| 1096 | return False; |
| 1097 | # endif /* BZ_UNIX */ |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | /*---------------------------------------------*/ |
| 1102 | #define BZ_N_SUFFIX_PAIRS 4 |
| 1103 | |
| 1104 | const Char* zSuffix[BZ_N_SUFFIX_PAIRS] |
| 1105 | = { ".bz2", ".bz", ".tbz2", ".tbz" }; |
| 1106 | const Char* unzSuffix[BZ_N_SUFFIX_PAIRS] |
| 1107 | = { "", "", ".tar", ".tar" }; |
| 1108 | |
| 1109 | static |
| 1110 | Bool hasSuffix ( Char* s, const Char* suffix ) |
| 1111 | { |
| 1112 | Int32 ns = strlen(s); |
| 1113 | Int32 nx = strlen(suffix); |
| 1114 | if (ns < nx) return False; |
| 1115 | if (strcmp(s + ns - nx, suffix) == 0) return True; |
| 1116 | return False; |
| 1117 | } |
| 1118 | |
| 1119 | static |
| 1120 | Bool mapSuffix ( Char* name, |
| 1121 | const Char* oldSuffix, |
| 1122 | const Char* newSuffix ) |
| 1123 | { |
| 1124 | if (!hasSuffix(name,oldSuffix)) return False; |
| 1125 | name[strlen(name)-strlen(oldSuffix)] = 0; |
| 1126 | strcat ( name, newSuffix ); |
| 1127 | return True; |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | /*---------------------------------------------*/ |
| 1132 | static |
| 1133 | void compress ( Char *name ) |
| 1134 | { |
| 1135 | FILE *inStr; |
| 1136 | FILE *outStr; |
| 1137 | Int32 n, i; |
| 1138 | struct MY_STAT statBuf; |
| 1139 | |
| 1140 | deleteOutputOnInterrupt = False; |
| 1141 | |
| 1142 | if (name == NULL && srcMode != SM_I2O) |
| 1143 | panic ( "compress: bad modes\n" ); |
| 1144 | |
| 1145 | switch (srcMode) { |
| 1146 | case SM_I2O: |
| 1147 | copyFileName ( inName, (Char*)"(stdin)" ); |
| 1148 | copyFileName ( outName, (Char*)"(stdout)" ); |
| 1149 | break; |
| 1150 | case SM_F2F: |
| 1151 | copyFileName ( inName, name ); |
| 1152 | copyFileName ( outName, name ); |
| 1153 | strcat ( outName, ".bz2" ); |
| 1154 | break; |
| 1155 | case SM_F2O: |
| 1156 | copyFileName ( inName, name ); |
| 1157 | copyFileName ( outName, (Char*)"(stdout)" ); |
| 1158 | break; |
| 1159 | } |
| 1160 | |
| 1161 | if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { |
| 1162 | if (noisy) |
| 1163 | fprintf ( stderr, "%s: There are no files matching `%s'.\n", |
| 1164 | progName, inName ); |
| 1165 | setExit(1); |
| 1166 | return; |
| 1167 | } |
| 1168 | if ( srcMode != SM_I2O && !fileExists ( inName ) ) { |
| 1169 | fprintf ( stderr, "%s: Can't open input file %s: %s.\n", |
| 1170 | progName, inName, strerror(errno) ); |
| 1171 | setExit(1); |
| 1172 | return; |
| 1173 | } |
| 1174 | for (i = 0; i < BZ_N_SUFFIX_PAIRS; i++) { |
| 1175 | if (hasSuffix(inName, zSuffix[i])) { |
| 1176 | if (noisy) |
| 1177 | fprintf ( stderr, |
| 1178 | "%s: Input file %s already has %s suffix.\n", |
| 1179 | progName, inName, zSuffix[i] ); |
| 1180 | setExit(1); |
| 1181 | return; |
| 1182 | } |
| 1183 | } |
| 1184 | if ( srcMode == SM_F2F || srcMode == SM_F2O ) { |
| 1185 | MY_STAT(inName, &statBuf); |
| 1186 | if ( MY_S_ISDIR(statBuf.st_mode) ) { |
| 1187 | fprintf( stderr, |
| 1188 | "%s: Input file %s is a directory.\n", |
| 1189 | progName,inName); |
| 1190 | setExit(1); |
| 1191 | return; |
| 1192 | } |
| 1193 | } |
| 1194 | if ( srcMode == SM_F2F && !forceOverwrite && notAStandardFile ( inName )) { |
| 1195 | if (noisy) |
| 1196 | fprintf ( stderr, "%s: Input file %s is not a normal file.\n", |
| 1197 | progName, inName ); |
| 1198 | setExit(1); |
| 1199 | return; |
| 1200 | } |
| 1201 | if ( srcMode == SM_F2F && fileExists ( outName ) ) { |
| 1202 | if (forceOverwrite) { |
| 1203 | remove(outName); |
| 1204 | } else { |
| 1205 | fprintf ( stderr, "%s: Output file %s already exists.\n", |
| 1206 | progName, outName ); |
| 1207 | setExit(1); |
| 1208 | return; |
| 1209 | } |
| 1210 | } |
| 1211 | if ( srcMode == SM_F2F && !forceOverwrite && |
| 1212 | (n=countHardLinks ( inName )) > 0) { |
| 1213 | fprintf ( stderr, "%s: Input file %s has %d other link%s.\n", |
| 1214 | progName, inName, n, n > 1 ? "s" : "" ); |
| 1215 | setExit(1); |
| 1216 | return; |
| 1217 | } |
| 1218 | |
| 1219 | if ( srcMode == SM_F2F ) { |
| 1220 | /* Save the file's meta-info before we open it. Doing it later |
| 1221 | means we mess up the access times. */ |
| 1222 | saveInputFileMetaInfo ( inName ); |
| 1223 | } |
| 1224 | |
| 1225 | switch ( srcMode ) { |
| 1226 | |
| 1227 | case SM_I2O: |
| 1228 | inStr = stdin; |
| 1229 | outStr = stdout; |
| 1230 | if ( isatty ( fileno ( stdout ) ) ) { |
| 1231 | fprintf ( stderr, |
| 1232 | "%s: I won't write compressed data to a terminal.\n", |
| 1233 | progName ); |
| 1234 | fprintf ( stderr, "%s: For help, type: `%s --help'.\n", |
| 1235 | progName, progName ); |
| 1236 | setExit(1); |
| 1237 | return; |
| 1238 | }; |
| 1239 | break; |
| 1240 | |
| 1241 | case SM_F2O: |
| 1242 | inStr = fopen ( inName, "rb" ); |
| 1243 | outStr = stdout; |
| 1244 | if ( isatty ( fileno ( stdout ) ) ) { |
| 1245 | fprintf ( stderr, |
| 1246 | "%s: I won't write compressed data to a terminal.\n", |
| 1247 | progName ); |
| 1248 | fprintf ( stderr, "%s: For help, type: `%s --help'.\n", |
| 1249 | progName, progName ); |
| 1250 | if ( inStr != NULL ) fclose ( inStr ); |
| 1251 | setExit(1); |
| 1252 | return; |
| 1253 | }; |
| 1254 | if ( inStr == NULL ) { |
| 1255 | fprintf ( stderr, "%s: Can't open input file %s: %s.\n", |
| 1256 | progName, inName, strerror(errno) ); |
| 1257 | setExit(1); |
| 1258 | return; |
| 1259 | }; |
| 1260 | break; |
| 1261 | |
| 1262 | case SM_F2F: |
| 1263 | inStr = fopen ( inName, "rb" ); |
| 1264 | outStr = fopen_output_safely ( outName, "wb" ); |
| 1265 | if ( outStr == NULL) { |
| 1266 | fprintf ( stderr, "%s: Can't create output file %s: %s.\n", |
| 1267 | progName, outName, strerror(errno) ); |
| 1268 | if ( inStr != NULL ) fclose ( inStr ); |
| 1269 | setExit(1); |
| 1270 | return; |
| 1271 | } |
| 1272 | if ( inStr == NULL ) { |
| 1273 | fprintf ( stderr, "%s: Can't open input file %s: %s.\n", |
| 1274 | progName, inName, strerror(errno) ); |
| 1275 | if ( outStr != NULL ) fclose ( outStr ); |
| 1276 | setExit(1); |
| 1277 | return; |
| 1278 | }; |
| 1279 | break; |
| 1280 | |
| 1281 | default: |
| 1282 | panic ( "compress: bad srcMode" ); |
| 1283 | break; |
| 1284 | } |
| 1285 | |
| 1286 | if (verbosity >= 1) { |
| 1287 | fprintf ( stderr, " %s: ", inName ); |
| 1288 | pad ( inName ); |
| 1289 | fflush ( stderr ); |
| 1290 | } |
| 1291 | |
| 1292 | /*--- Now the input and output handles are sane. Do the Biz. ---*/ |
| 1293 | outputHandleJustInCase = outStr; |
| 1294 | deleteOutputOnInterrupt = True; |
| 1295 | compressStream ( inStr, outStr ); |
| 1296 | outputHandleJustInCase = NULL; |
| 1297 | |
| 1298 | /*--- If there was an I/O error, we won't get here. ---*/ |
| 1299 | if ( srcMode == SM_F2F ) { |
| 1300 | applySavedTimeInfoToOutputFile ( outName ); |
| 1301 | deleteOutputOnInterrupt = False; |
| 1302 | if ( !keepInputFiles ) { |
| 1303 | IntNative retVal = remove ( inName ); |
| 1304 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1305 | } |
| 1306 | } |
| 1307 | |
| 1308 | deleteOutputOnInterrupt = False; |
| 1309 | } |
| 1310 | |
| 1311 | |
| 1312 | /*---------------------------------------------*/ |
| 1313 | static |
| 1314 | void uncompress ( Char *name ) |
| 1315 | { |
| 1316 | FILE *inStr; |
| 1317 | FILE *outStr; |
| 1318 | Int32 n, i; |
| 1319 | Bool magicNumberOK; |
| 1320 | Bool cantGuess; |
| 1321 | struct MY_STAT statBuf; |
| 1322 | |
| 1323 | deleteOutputOnInterrupt = False; |
| 1324 | |
| 1325 | if (name == NULL && srcMode != SM_I2O) |
| 1326 | panic ( "uncompress: bad modes\n" ); |
| 1327 | |
| 1328 | cantGuess = False; |
| 1329 | switch (srcMode) { |
| 1330 | case SM_I2O: |
| 1331 | copyFileName ( inName, (Char*)"(stdin)" ); |
| 1332 | copyFileName ( outName, (Char*)"(stdout)" ); |
| 1333 | break; |
| 1334 | case SM_F2F: |
| 1335 | copyFileName ( inName, name ); |
| 1336 | copyFileName ( outName, name ); |
| 1337 | for (i = 0; i < BZ_N_SUFFIX_PAIRS; i++) |
| 1338 | if (mapSuffix(outName,zSuffix[i],unzSuffix[i])) |
| 1339 | goto zzz; |
| 1340 | cantGuess = True; |
| 1341 | strcat ( outName, ".out" ); |
| 1342 | break; |
| 1343 | case SM_F2O: |
| 1344 | copyFileName ( inName, name ); |
| 1345 | copyFileName ( outName, (Char*)"(stdout)" ); |
| 1346 | break; |
| 1347 | } |
| 1348 | |
| 1349 | zzz: |
| 1350 | if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { |
| 1351 | if (noisy) |
| 1352 | fprintf ( stderr, "%s: There are no files matching `%s'.\n", |
| 1353 | progName, inName ); |
| 1354 | setExit(1); |
| 1355 | return; |
| 1356 | } |
| 1357 | if ( srcMode != SM_I2O && !fileExists ( inName ) ) { |
| 1358 | fprintf ( stderr, "%s: Can't open input file %s: %s.\n", |
| 1359 | progName, inName, strerror(errno) ); |
| 1360 | setExit(1); |
| 1361 | return; |
| 1362 | } |
| 1363 | if ( srcMode == SM_F2F || srcMode == SM_F2O ) { |
| 1364 | MY_STAT(inName, &statBuf); |
| 1365 | if ( MY_S_ISDIR(statBuf.st_mode) ) { |
| 1366 | fprintf( stderr, |
| 1367 | "%s: Input file %s is a directory.\n", |
| 1368 | progName,inName); |
| 1369 | setExit(1); |
| 1370 | return; |
| 1371 | } |
| 1372 | } |
| 1373 | if ( srcMode == SM_F2F && !forceOverwrite && notAStandardFile ( inName )) { |
| 1374 | if (noisy) |
| 1375 | fprintf ( stderr, "%s: Input file %s is not a normal file.\n", |
| 1376 | progName, inName ); |
| 1377 | setExit(1); |
| 1378 | return; |
| 1379 | } |
| 1380 | if ( /* srcMode == SM_F2F implied && */ cantGuess ) { |
| 1381 | if (noisy) |
| 1382 | fprintf ( stderr, |
| 1383 | "%s: Can't guess original name for %s -- using %s\n", |
| 1384 | progName, inName, outName ); |
| 1385 | /* just a warning, no return */ |
| 1386 | } |
| 1387 | if ( srcMode == SM_F2F && fileExists ( outName ) ) { |
| 1388 | if (forceOverwrite) { |
| 1389 | remove(outName); |
| 1390 | } else { |
| 1391 | fprintf ( stderr, "%s: Output file %s already exists.\n", |
| 1392 | progName, outName ); |
| 1393 | setExit(1); |
| 1394 | return; |
| 1395 | } |
| 1396 | } |
| 1397 | if ( srcMode == SM_F2F && !forceOverwrite && |
| 1398 | (n=countHardLinks ( inName ) ) > 0) { |
| 1399 | fprintf ( stderr, "%s: Input file %s has %d other link%s.\n", |
| 1400 | progName, inName, n, n > 1 ? "s" : "" ); |
| 1401 | setExit(1); |
| 1402 | return; |
| 1403 | } |
| 1404 | |
| 1405 | if ( srcMode == SM_F2F ) { |
| 1406 | /* Save the file's meta-info before we open it. Doing it later |
| 1407 | means we mess up the access times. */ |
| 1408 | saveInputFileMetaInfo ( inName ); |
| 1409 | } |
| 1410 | |
| 1411 | switch ( srcMode ) { |
| 1412 | |
| 1413 | case SM_I2O: |
| 1414 | inStr = stdin; |
| 1415 | outStr = stdout; |
| 1416 | if ( isatty ( fileno ( stdin ) ) ) { |
| 1417 | fprintf ( stderr, |
| 1418 | "%s: I won't read compressed data from a terminal.\n", |
| 1419 | progName ); |
| 1420 | fprintf ( stderr, "%s: For help, type: `%s --help'.\n", |
| 1421 | progName, progName ); |
| 1422 | setExit(1); |
| 1423 | return; |
| 1424 | }; |
| 1425 | break; |
| 1426 | |
| 1427 | case SM_F2O: |
| 1428 | inStr = fopen ( inName, "rb" ); |
| 1429 | outStr = stdout; |
| 1430 | if ( inStr == NULL ) { |
| 1431 | fprintf ( stderr, "%s: Can't open input file %s:%s.\n", |
| 1432 | progName, inName, strerror(errno) ); |
| 1433 | if ( inStr != NULL ) fclose ( inStr ); |
| 1434 | setExit(1); |
| 1435 | return; |
| 1436 | }; |
| 1437 | break; |
| 1438 | |
| 1439 | case SM_F2F: |
| 1440 | inStr = fopen ( inName, "rb" ); |
| 1441 | outStr = fopen_output_safely ( outName, "wb" ); |
| 1442 | if ( outStr == NULL) { |
| 1443 | fprintf ( stderr, "%s: Can't create output file %s: %s.\n", |
| 1444 | progName, outName, strerror(errno) ); |
| 1445 | if ( inStr != NULL ) fclose ( inStr ); |
| 1446 | setExit(1); |
| 1447 | return; |
| 1448 | } |
| 1449 | if ( inStr == NULL ) { |
| 1450 | fprintf ( stderr, "%s: Can't open input file %s: %s.\n", |
| 1451 | progName, inName, strerror(errno) ); |
| 1452 | if ( outStr != NULL ) fclose ( outStr ); |
| 1453 | setExit(1); |
| 1454 | return; |
| 1455 | }; |
| 1456 | break; |
| 1457 | |
| 1458 | default: |
| 1459 | panic ( "uncompress: bad srcMode" ); |
| 1460 | break; |
| 1461 | } |
| 1462 | |
| 1463 | if (verbosity >= 1) { |
| 1464 | fprintf ( stderr, " %s: ", inName ); |
| 1465 | pad ( inName ); |
| 1466 | fflush ( stderr ); |
| 1467 | } |
| 1468 | |
| 1469 | /*--- Now the input and output handles are sane. Do the Biz. ---*/ |
| 1470 | outputHandleJustInCase = outStr; |
| 1471 | deleteOutputOnInterrupt = True; |
| 1472 | magicNumberOK = uncompressStream ( inStr, outStr ); |
| 1473 | outputHandleJustInCase = NULL; |
| 1474 | |
| 1475 | /*--- If there was an I/O error, we won't get here. ---*/ |
| 1476 | if ( magicNumberOK ) { |
| 1477 | if ( srcMode == SM_F2F ) { |
| 1478 | applySavedTimeInfoToOutputFile ( outName ); |
| 1479 | deleteOutputOnInterrupt = False; |
| 1480 | if ( !keepInputFiles ) { |
| 1481 | IntNative retVal = remove ( inName ); |
| 1482 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1483 | } |
| 1484 | } |
| 1485 | } else { |
| 1486 | unzFailsExist = True; |
| 1487 | deleteOutputOnInterrupt = False; |
| 1488 | if ( srcMode == SM_F2F ) { |
| 1489 | IntNative retVal = remove ( outName ); |
| 1490 | ERROR_IF_NOT_ZERO ( retVal ); |
| 1491 | } |
| 1492 | } |
| 1493 | deleteOutputOnInterrupt = False; |
| 1494 | |
| 1495 | if ( magicNumberOK ) { |
| 1496 | if (verbosity >= 1) |
| 1497 | fprintf ( stderr, "done\n" ); |
| 1498 | } else { |
| 1499 | setExit(2); |
| 1500 | if (verbosity >= 1) |
| 1501 | fprintf ( stderr, "not a bzip2 file.\n" ); else |
| 1502 | fprintf ( stderr, |
| 1503 | "%s: %s is not a bzip2 file.\n", |
| 1504 | progName, inName ); |
| 1505 | } |
| 1506 | |
| 1507 | } |
| 1508 | |
| 1509 | |
| 1510 | /*---------------------------------------------*/ |
| 1511 | static |
| 1512 | void testf ( Char *name ) |
| 1513 | { |
| 1514 | FILE *inStr; |
| 1515 | Bool allOK; |
| 1516 | struct MY_STAT statBuf; |
| 1517 | |
| 1518 | deleteOutputOnInterrupt = False; |
| 1519 | |
| 1520 | if (name == NULL && srcMode != SM_I2O) |
| 1521 | panic ( "testf: bad modes\n" ); |
| 1522 | |
| 1523 | copyFileName ( outName, (Char*)"(none)" ); |
| 1524 | switch (srcMode) { |
| 1525 | case SM_I2O: copyFileName ( inName, (Char*)"(stdin)" ); break; |
| 1526 | case SM_F2F: copyFileName ( inName, name ); break; |
| 1527 | case SM_F2O: copyFileName ( inName, name ); break; |
| 1528 | } |
| 1529 | |
| 1530 | if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { |
| 1531 | if (noisy) |
| 1532 | fprintf ( stderr, "%s: There are no files matching `%s'.\n", |
| 1533 | progName, inName ); |
| 1534 | setExit(1); |
| 1535 | return; |
| 1536 | } |
| 1537 | if ( srcMode != SM_I2O && !fileExists ( inName ) ) { |
| 1538 | fprintf ( stderr, "%s: Can't open input %s: %s.\n", |
| 1539 | progName, inName, strerror(errno) ); |
| 1540 | setExit(1); |
| 1541 | return; |
| 1542 | } |
| 1543 | if ( srcMode != SM_I2O ) { |
| 1544 | MY_STAT(inName, &statBuf); |
| 1545 | if ( MY_S_ISDIR(statBuf.st_mode) ) { |
| 1546 | fprintf( stderr, |
| 1547 | "%s: Input file %s is a directory.\n", |
| 1548 | progName,inName); |
| 1549 | setExit(1); |
| 1550 | return; |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | switch ( srcMode ) { |
| 1555 | |
| 1556 | case SM_I2O: |
| 1557 | if ( isatty ( fileno ( stdin ) ) ) { |
| 1558 | fprintf ( stderr, |
| 1559 | "%s: I won't read compressed data from a terminal.\n", |
| 1560 | progName ); |
| 1561 | fprintf ( stderr, "%s: For help, type: `%s --help'.\n", |
| 1562 | progName, progName ); |
| 1563 | setExit(1); |
| 1564 | return; |
| 1565 | }; |
| 1566 | inStr = stdin; |
| 1567 | break; |
| 1568 | |
| 1569 | case SM_F2O: case SM_F2F: |
| 1570 | inStr = fopen ( inName, "rb" ); |
| 1571 | if ( inStr == NULL ) { |
| 1572 | fprintf ( stderr, "%s: Can't open input file %s:%s.\n", |
| 1573 | progName, inName, strerror(errno) ); |
| 1574 | setExit(1); |
| 1575 | return; |
| 1576 | }; |
| 1577 | break; |
| 1578 | |
| 1579 | default: |
| 1580 | panic ( "testf: bad srcMode" ); |
| 1581 | break; |
| 1582 | } |
| 1583 | |
| 1584 | if (verbosity >= 1) { |
| 1585 | fprintf ( stderr, " %s: ", inName ); |
| 1586 | pad ( inName ); |
| 1587 | fflush ( stderr ); |
| 1588 | } |
| 1589 | |
| 1590 | /*--- Now the input handle is sane. Do the Biz. ---*/ |
| 1591 | outputHandleJustInCase = NULL; |
| 1592 | allOK = testStream ( inStr ); |
| 1593 | |
| 1594 | if (allOK && verbosity >= 1) fprintf ( stderr, "ok\n" ); |
| 1595 | if (!allOK) testFailsExist = True; |
| 1596 | } |
| 1597 | |
| 1598 | |
| 1599 | /*---------------------------------------------*/ |
| 1600 | static |
| 1601 | void license ( void ) |
| 1602 | { |
| 1603 | fprintf ( stderr, |
| 1604 | |
| 1605 | "bzip2, a block-sorting file compressor. " |
| 1606 | "Version %s.\n" |
| 1607 | " \n" |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 1608 | " Copyright (C) 1996-2019 by Julian Seward.\n" |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 1609 | " \n" |
| 1610 | " This program is free software; you can redistribute it and/or modify\n" |
| 1611 | " it under the terms set out in the LICENSE file, which is included\n" |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 1612 | " in the bzip2 source distribution.\n" |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 1613 | " \n" |
| 1614 | " This program is distributed in the hope that it will be useful,\n" |
| 1615 | " but WITHOUT ANY WARRANTY; without even the implied warranty of\n" |
| 1616 | " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" |
| 1617 | " LICENSE file for more details.\n" |
| 1618 | " \n", |
| 1619 | BZ2_bzlibVersion() |
| 1620 | ); |
| 1621 | } |
| 1622 | |
| 1623 | |
| 1624 | /*---------------------------------------------*/ |
| 1625 | static |
| 1626 | void usage ( Char *fullProgName ) |
| 1627 | { |
| 1628 | fprintf ( |
| 1629 | stderr, |
| 1630 | "bzip2, a block-sorting file compressor. " |
| 1631 | "Version %s.\n" |
| 1632 | "\n usage: %s [flags and input files in any order]\n" |
| 1633 | "\n" |
| 1634 | " -h --help print this message\n" |
| 1635 | " -d --decompress force decompression\n" |
| 1636 | " -z --compress force compression\n" |
| 1637 | " -k --keep keep (don't delete) input files\n" |
| 1638 | " -f --force overwrite existing output files\n" |
| 1639 | " -t --test test compressed file integrity\n" |
| 1640 | " -c --stdout output to standard out\n" |
| 1641 | " -q --quiet suppress noncritical error messages\n" |
| 1642 | " -v --verbose be verbose (a 2nd -v gives more)\n" |
| 1643 | " -L --license display software version & license\n" |
| 1644 | " -V --version display software version & license\n" |
| 1645 | " -s --small use less memory (at most 2500k)\n" |
| 1646 | " -1 .. -9 set block size to 100k .. 900k\n" |
| 1647 | " --fast alias for -1\n" |
| 1648 | " --best alias for -9\n" |
| 1649 | "\n" |
| 1650 | " If invoked as `bzip2', default action is to compress.\n" |
| 1651 | " as `bunzip2', default action is to decompress.\n" |
| 1652 | " as `bzcat', default action is to decompress to stdout.\n" |
| 1653 | "\n" |
| 1654 | " If no file names are given, bzip2 compresses or decompresses\n" |
| 1655 | " from standard input to standard output. You can combine\n" |
| 1656 | " short flags, so `-v -4' means the same as -v4 or -4v, &c.\n" |
| 1657 | # if BZ_UNIX |
| 1658 | "\n" |
| 1659 | # endif |
| 1660 | , |
| 1661 | |
| 1662 | BZ2_bzlibVersion(), |
| 1663 | fullProgName |
| 1664 | ); |
| 1665 | } |
| 1666 | |
| 1667 | |
| 1668 | /*---------------------------------------------*/ |
| 1669 | static |
| 1670 | void redundant ( Char* flag ) |
| 1671 | { |
| 1672 | fprintf ( |
| 1673 | stderr, |
| 1674 | "%s: %s is redundant in versions 0.9.5 and above\n", |
| 1675 | progName, flag ); |
| 1676 | } |
| 1677 | |
| 1678 | |
| 1679 | /*---------------------------------------------*/ |
| 1680 | /*-- |
| 1681 | All the garbage from here to main() is purely to |
| 1682 | implement a linked list of command-line arguments, |
| 1683 | into which main() copies argv[1 .. argc-1]. |
| 1684 | |
| 1685 | The purpose of this exercise is to facilitate |
| 1686 | the expansion of wildcard characters * and ? in |
| 1687 | filenames for OSs which don't know how to do it |
| 1688 | themselves, like MSDOS, Windows 95 and NT. |
| 1689 | |
| 1690 | The actual Dirty Work is done by the platform- |
| 1691 | specific macro APPEND_FILESPEC. |
| 1692 | --*/ |
| 1693 | |
| 1694 | typedef |
| 1695 | struct zzzz { |
| 1696 | Char *name; |
| 1697 | struct zzzz *link; |
| 1698 | } |
| 1699 | Cell; |
| 1700 | |
| 1701 | |
| 1702 | /*---------------------------------------------*/ |
| 1703 | static |
| 1704 | void *myMalloc ( Int32 n ) |
| 1705 | { |
| 1706 | void* p; |
| 1707 | |
| 1708 | p = malloc ( (size_t)n ); |
| 1709 | if (p == NULL) outOfMemory (); |
| 1710 | return p; |
| 1711 | } |
| 1712 | |
| 1713 | |
| 1714 | /*---------------------------------------------*/ |
| 1715 | static |
| 1716 | Cell *mkCell ( void ) |
| 1717 | { |
| 1718 | Cell *c; |
| 1719 | |
| 1720 | c = (Cell*) myMalloc ( sizeof ( Cell ) ); |
| 1721 | c->name = NULL; |
| 1722 | c->link = NULL; |
| 1723 | return c; |
| 1724 | } |
| 1725 | |
| 1726 | |
| 1727 | /*---------------------------------------------*/ |
| 1728 | static |
| 1729 | Cell *snocString ( Cell *root, Char *name ) |
| 1730 | { |
| 1731 | if (root == NULL) { |
| 1732 | Cell *tmp = mkCell(); |
| 1733 | tmp->name = (Char*) myMalloc ( 5 + strlen(name) ); |
| 1734 | strcpy ( tmp->name, name ); |
| 1735 | return tmp; |
| 1736 | } else { |
| 1737 | Cell *tmp = root; |
| 1738 | while (tmp->link != NULL) tmp = tmp->link; |
| 1739 | tmp->link = snocString ( tmp->link, name ); |
| 1740 | return root; |
| 1741 | } |
| 1742 | } |
| 1743 | |
| 1744 | |
| 1745 | /*---------------------------------------------*/ |
| 1746 | static |
| 1747 | void addFlagsFromEnvVar ( Cell** argList, Char* varName ) |
| 1748 | { |
| 1749 | Int32 i, j, k; |
| 1750 | Char *envbase, *p; |
| 1751 | |
| 1752 | envbase = getenv(varName); |
| 1753 | if (envbase != NULL) { |
| 1754 | p = envbase; |
| 1755 | i = 0; |
| 1756 | while (True) { |
| 1757 | if (p[i] == 0) break; |
| 1758 | p += i; |
| 1759 | i = 0; |
| 1760 | while (isspace((Int32)(p[0]))) p++; |
| 1761 | while (p[i] != 0 && !isspace((Int32)(p[i]))) i++; |
| 1762 | if (i > 0) { |
| 1763 | k = i; if (k > FILE_NAME_LEN-10) k = FILE_NAME_LEN-10; |
| 1764 | for (j = 0; j < k; j++) tmpName[j] = p[j]; |
| 1765 | tmpName[k] = 0; |
| 1766 | APPEND_FLAG(*argList, tmpName); |
| 1767 | } |
| 1768 | } |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | |
| 1773 | /*---------------------------------------------*/ |
| 1774 | #define ISFLAG(s) (strcmp(aa->name, (s))==0) |
| 1775 | |
| 1776 | IntNative main ( IntNative argc, Char *argv[] ) |
| 1777 | { |
| 1778 | Int32 i, j; |
| 1779 | Char *tmp; |
| 1780 | Cell *argList; |
| 1781 | Cell *aa; |
| 1782 | Bool decode; |
| 1783 | |
| 1784 | /*-- Be really really really paranoid :-) --*/ |
| 1785 | if (sizeof(Int32) != 4 || sizeof(UInt32) != 4 || |
| 1786 | sizeof(Int16) != 2 || sizeof(UInt16) != 2 || |
| 1787 | sizeof(Char) != 1 || sizeof(UChar) != 1) |
| 1788 | configError(); |
| 1789 | |
| 1790 | /*-- Initialise --*/ |
| 1791 | outputHandleJustInCase = NULL; |
| 1792 | smallMode = False; |
| 1793 | keepInputFiles = False; |
| 1794 | forceOverwrite = False; |
| 1795 | noisy = True; |
| 1796 | verbosity = 0; |
| 1797 | blockSize100k = 9; |
| 1798 | testFailsExist = False; |
| 1799 | unzFailsExist = False; |
| 1800 | numFileNames = 0; |
| 1801 | numFilesProcessed = 0; |
| 1802 | workFactor = 30; |
| 1803 | deleteOutputOnInterrupt = False; |
| 1804 | exitValue = 0; |
| 1805 | i = j = 0; /* avoid bogus warning from egcs-1.1.X */ |
| 1806 | |
| 1807 | /*-- Set up signal handlers for mem access errors --*/ |
| 1808 | signal (SIGSEGV, mySIGSEGVorSIGBUScatcher); |
| 1809 | # if BZ_UNIX |
| 1810 | # ifndef __DJGPP__ |
| 1811 | signal (SIGBUS, mySIGSEGVorSIGBUScatcher); |
| 1812 | # endif |
| 1813 | # endif |
| 1814 | |
| 1815 | copyFileName ( inName, (Char*)"(none)" ); |
| 1816 | copyFileName ( outName, (Char*)"(none)" ); |
| 1817 | |
| 1818 | copyFileName ( progNameReally, argv[0] ); |
| 1819 | progName = &progNameReally[0]; |
| 1820 | for (tmp = &progNameReally[0]; *tmp != '\0'; tmp++) |
| 1821 | if (*tmp == PATH_SEP) progName = tmp + 1; |
| 1822 | |
| 1823 | |
| 1824 | /*-- Copy flags from env var BZIP2, and |
| 1825 | expand filename wildcards in arg list. |
| 1826 | --*/ |
| 1827 | argList = NULL; |
| 1828 | addFlagsFromEnvVar ( &argList, (Char*)"BZIP2" ); |
| 1829 | addFlagsFromEnvVar ( &argList, (Char*)"BZIP" ); |
| 1830 | for (i = 1; i <= argc-1; i++) |
| 1831 | APPEND_FILESPEC(argList, argv[i]); |
| 1832 | |
| 1833 | |
| 1834 | /*-- Find the length of the longest filename --*/ |
| 1835 | longestFileName = 7; |
| 1836 | numFileNames = 0; |
| 1837 | decode = True; |
| 1838 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 1839 | if (ISFLAG("--")) { decode = False; continue; } |
| 1840 | if (aa->name[0] == '-' && decode) continue; |
| 1841 | numFileNames++; |
| 1842 | if (longestFileName < (Int32)strlen(aa->name) ) |
| 1843 | longestFileName = (Int32)strlen(aa->name); |
| 1844 | } |
| 1845 | |
| 1846 | |
| 1847 | /*-- Determine source modes; flag handling may change this too. --*/ |
| 1848 | if (numFileNames == 0) |
| 1849 | srcMode = SM_I2O; else srcMode = SM_F2F; |
| 1850 | |
| 1851 | |
| 1852 | /*-- Determine what to do (compress/uncompress/test/cat). --*/ |
| 1853 | /*-- Note that subsequent flag handling may change this. --*/ |
| 1854 | opMode = OM_Z; |
| 1855 | |
| 1856 | if ( (strstr ( progName, "unzip" ) != 0) || |
| 1857 | (strstr ( progName, "UNZIP" ) != 0) ) |
| 1858 | opMode = OM_UNZ; |
| 1859 | |
| 1860 | if ( (strstr ( progName, "z2cat" ) != 0) || |
| 1861 | (strstr ( progName, "Z2CAT" ) != 0) || |
| 1862 | (strstr ( progName, "zcat" ) != 0) || |
| 1863 | (strstr ( progName, "ZCAT" ) != 0) ) { |
| 1864 | opMode = OM_UNZ; |
| 1865 | srcMode = (numFileNames == 0) ? SM_I2O : SM_F2O; |
| 1866 | } |
| 1867 | |
| 1868 | |
| 1869 | /*-- Look at the flags. --*/ |
| 1870 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 1871 | if (ISFLAG("--")) break; |
| 1872 | if (aa->name[0] == '-' && aa->name[1] != '-') { |
| 1873 | for (j = 1; aa->name[j] != '\0'; j++) { |
| 1874 | switch (aa->name[j]) { |
| 1875 | case 'c': srcMode = SM_F2O; break; |
| 1876 | case 'd': opMode = OM_UNZ; break; |
| 1877 | case 'z': opMode = OM_Z; break; |
| 1878 | case 'f': forceOverwrite = True; break; |
| 1879 | case 't': opMode = OM_TEST; break; |
| 1880 | case 'k': keepInputFiles = True; break; |
| 1881 | case 's': smallMode = True; break; |
| 1882 | case 'q': noisy = False; break; |
| 1883 | case '1': blockSize100k = 1; break; |
| 1884 | case '2': blockSize100k = 2; break; |
| 1885 | case '3': blockSize100k = 3; break; |
| 1886 | case '4': blockSize100k = 4; break; |
| 1887 | case '5': blockSize100k = 5; break; |
| 1888 | case '6': blockSize100k = 6; break; |
| 1889 | case '7': blockSize100k = 7; break; |
| 1890 | case '8': blockSize100k = 8; break; |
| 1891 | case '9': blockSize100k = 9; break; |
| 1892 | case 'V': |
| 1893 | case 'L': license(); break; |
| 1894 | case 'v': verbosity++; break; |
| 1895 | case 'h': usage ( progName ); |
| 1896 | exit ( 0 ); |
| 1897 | break; |
| 1898 | default: fprintf ( stderr, "%s: Bad flag `%s'\n", |
| 1899 | progName, aa->name ); |
| 1900 | usage ( progName ); |
| 1901 | exit ( 1 ); |
| 1902 | break; |
| 1903 | } |
| 1904 | } |
| 1905 | } |
| 1906 | } |
| 1907 | |
| 1908 | /*-- And again ... --*/ |
| 1909 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 1910 | if (ISFLAG("--")) break; |
| 1911 | if (ISFLAG("--stdout")) srcMode = SM_F2O; else |
| 1912 | if (ISFLAG("--decompress")) opMode = OM_UNZ; else |
| 1913 | if (ISFLAG("--compress")) opMode = OM_Z; else |
| 1914 | if (ISFLAG("--force")) forceOverwrite = True; else |
| 1915 | if (ISFLAG("--test")) opMode = OM_TEST; else |
| 1916 | if (ISFLAG("--keep")) keepInputFiles = True; else |
| 1917 | if (ISFLAG("--small")) smallMode = True; else |
| 1918 | if (ISFLAG("--quiet")) noisy = False; else |
| 1919 | if (ISFLAG("--version")) license(); else |
| 1920 | if (ISFLAG("--license")) license(); else |
| 1921 | if (ISFLAG("--exponential")) workFactor = 1; else |
| 1922 | if (ISFLAG("--repetitive-best")) redundant(aa->name); else |
| 1923 | if (ISFLAG("--repetitive-fast")) redundant(aa->name); else |
| 1924 | if (ISFLAG("--fast")) blockSize100k = 1; else |
| 1925 | if (ISFLAG("--best")) blockSize100k = 9; else |
| 1926 | if (ISFLAG("--verbose")) verbosity++; else |
| 1927 | if (ISFLAG("--help")) { usage ( progName ); exit ( 0 ); } |
| 1928 | else |
| 1929 | if (strncmp ( aa->name, "--", 2) == 0) { |
| 1930 | fprintf ( stderr, "%s: Bad flag `%s'\n", progName, aa->name ); |
| 1931 | usage ( progName ); |
| 1932 | exit ( 1 ); |
| 1933 | } |
| 1934 | } |
| 1935 | |
| 1936 | if (verbosity > 4) verbosity = 4; |
| 1937 | if (opMode == OM_Z && smallMode && blockSize100k > 2) |
| 1938 | blockSize100k = 2; |
| 1939 | |
| 1940 | if (opMode == OM_TEST && srcMode == SM_F2O) { |
| 1941 | fprintf ( stderr, "%s: -c and -t cannot be used together.\n", |
| 1942 | progName ); |
| 1943 | exit ( 1 ); |
| 1944 | } |
| 1945 | |
| 1946 | if (srcMode == SM_F2O && numFileNames == 0) |
| 1947 | srcMode = SM_I2O; |
| 1948 | |
| 1949 | if (opMode != OM_Z) blockSize100k = 0; |
| 1950 | |
| 1951 | if (srcMode == SM_F2F) { |
| 1952 | signal (SIGINT, mySignalCatcher); |
| 1953 | signal (SIGTERM, mySignalCatcher); |
| 1954 | # if BZ_UNIX |
| 1955 | signal (SIGHUP, mySignalCatcher); |
| 1956 | # endif |
| 1957 | } |
| 1958 | |
| 1959 | if (opMode == OM_Z) { |
| 1960 | if (srcMode == SM_I2O) { |
| 1961 | compress ( NULL ); |
| 1962 | } else { |
| 1963 | decode = True; |
| 1964 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 1965 | if (ISFLAG("--")) { decode = False; continue; } |
| 1966 | if (aa->name[0] == '-' && decode) continue; |
| 1967 | numFilesProcessed++; |
| 1968 | compress ( aa->name ); |
| 1969 | } |
| 1970 | } |
| 1971 | } |
| 1972 | else |
| 1973 | |
| 1974 | if (opMode == OM_UNZ) { |
| 1975 | unzFailsExist = False; |
| 1976 | if (srcMode == SM_I2O) { |
| 1977 | uncompress ( NULL ); |
| 1978 | } else { |
| 1979 | decode = True; |
| 1980 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 1981 | if (ISFLAG("--")) { decode = False; continue; } |
| 1982 | if (aa->name[0] == '-' && decode) continue; |
| 1983 | numFilesProcessed++; |
| 1984 | uncompress ( aa->name ); |
| 1985 | } |
| 1986 | } |
| 1987 | if (unzFailsExist) { |
| 1988 | setExit(2); |
| 1989 | exit(exitValue); |
| 1990 | } |
| 1991 | } |
| 1992 | |
| 1993 | else { |
| 1994 | testFailsExist = False; |
| 1995 | if (srcMode == SM_I2O) { |
| 1996 | testf ( NULL ); |
| 1997 | } else { |
| 1998 | decode = True; |
| 1999 | for (aa = argList; aa != NULL; aa = aa->link) { |
| 2000 | if (ISFLAG("--")) { decode = False; continue; } |
| 2001 | if (aa->name[0] == '-' && decode) continue; |
| 2002 | numFilesProcessed++; |
| 2003 | testf ( aa->name ); |
| 2004 | } |
| 2005 | } |
Elliott Hughes | 8645cf6 | 2021-12-08 15:07:46 -0800 | [diff] [blame] | 2006 | if (testFailsExist) { |
| 2007 | if (noisy) { |
| 2008 | fprintf ( stderr, |
| 2009 | "\n" |
| 2010 | "You can use the `bzip2recover' program to attempt to recover\n" |
| 2011 | "data from undamaged sections of corrupted files.\n\n" |
| 2012 | ); |
| 2013 | } |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 2014 | setExit(2); |
| 2015 | exit(exitValue); |
| 2016 | } |
| 2017 | } |
| 2018 | |
| 2019 | /* Free the argument list memory to mollify leak detectors |
| 2020 | (eg) Purify, Checker. Serves no other useful purpose. |
| 2021 | */ |
| 2022 | aa = argList; |
| 2023 | while (aa != NULL) { |
| 2024 | Cell* aa2 = aa->link; |
| 2025 | if (aa->name != NULL) free(aa->name); |
| 2026 | free(aa); |
| 2027 | aa = aa2; |
| 2028 | } |
| 2029 | |
| 2030 | return exitValue; |
| 2031 | } |
| 2032 | |
| 2033 | |
| 2034 | /*-----------------------------------------------------------*/ |
| 2035 | /*--- end bzip2.c ---*/ |
| 2036 | /*-----------------------------------------------------------*/ |