| 1 | /* |
|---|
| 2 | * zzuf - general purpose fuzzer |
|---|
| 3 | * Copyright (c) 2006-2009 Sam Hocevar <sam@hocevar.net> |
|---|
| 4 | * All Rights Reserved |
|---|
| 5 | * |
|---|
| 6 | * $Id$ |
|---|
| 7 | * |
|---|
| 8 | * This program is free software. It comes without any warranty, to |
|---|
| 9 | * the extent permitted by applicable law. You can redistribute it |
|---|
| 10 | * and/or modify it under the terms of the Do What The Fuck You Want |
|---|
| 11 | * To Public License, Version 2, as published by Sam Hocevar. See |
|---|
| 12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
|---|
| 13 | */ |
|---|
| 14 | |
|---|
| 15 | /* |
|---|
| 16 | * load-stream.c: loaded stream functions |
|---|
| 17 | */ |
|---|
| 18 | |
|---|
| 19 | #include "config.h" |
|---|
| 20 | |
|---|
| 21 | /* Needed for getline() and getdelim() */ |
|---|
| 22 | #define _GNU_SOURCE |
|---|
| 23 | /* Needed for getc_unlocked() on OpenSolaris */ |
|---|
| 24 | #define __EXTENSIONS__ |
|---|
| 25 | |
|---|
| 26 | /* Define if stdio operations use *only* the refill mechanism */ |
|---|
| 27 | #if defined HAVE___SREFILL |
|---|
| 28 | # define REFILL_ONLY_STDIO |
|---|
| 29 | #endif |
|---|
| 30 | |
|---|
| 31 | #if defined HAVE_STDINT_H |
|---|
| 32 | # include <stdint.h> |
|---|
| 33 | #elif defined HAVE_INTTYPES_H |
|---|
| 34 | # include <inttypes.h> |
|---|
| 35 | #endif |
|---|
| 36 | #include <stdlib.h> |
|---|
| 37 | |
|---|
| 38 | #include <stdio.h> |
|---|
| 39 | #include <sys/types.h> |
|---|
| 40 | #if defined HAVE_UNISTD_H |
|---|
| 41 | # include <unistd.h> /* Needed for __srefill’s lseek() call */ |
|---|
| 42 | #endif |
|---|
| 43 | |
|---|
| 44 | #include "libzzuf.h" |
|---|
| 45 | #include "lib-load.h" |
|---|
| 46 | #include "debug.h" |
|---|
| 47 | #include "fuzz.h" |
|---|
| 48 | #include "fd.h" |
|---|
| 49 | |
|---|
| 50 | #if defined HAVE___SREFILL |
|---|
| 51 | int NEW(__srefill)(FILE *fp); |
|---|
| 52 | #endif |
|---|
| 53 | |
|---|
| 54 | #if defined HAVE___FILBUF |
|---|
| 55 | int NEW(__filbuf)(FILE *fp); |
|---|
| 56 | #endif |
|---|
| 57 | |
|---|
| 58 | #if defined HAVE___SRGET && !defined HAVE___SREFILL |
|---|
| 59 | int NEW(__srget)(FILE *fp); |
|---|
| 60 | #endif |
|---|
| 61 | |
|---|
| 62 | #if defined HAVE___UFLOW |
|---|
| 63 | int NEW(__uflow)(FILE *fp); |
|---|
| 64 | #endif |
|---|
| 65 | |
|---|
| 66 | /* Library functions that we divert */ |
|---|
| 67 | static FILE * (*ORIG(fopen)) (const char *path, const char *mode); |
|---|
| 68 | #if defined HAVE_FOPEN64 |
|---|
| 69 | static FILE * (*ORIG(fopen64)) (const char *path, const char *mode); |
|---|
| 70 | #endif |
|---|
| 71 | #if defined HAVE___FOPEN64 |
|---|
| 72 | static FILE * (*ORIG(__fopen64))(const char *path, const char *mode); |
|---|
| 73 | #endif |
|---|
| 74 | static FILE * (*ORIG(freopen)) (const char *path, const char *mode, |
|---|
| 75 | FILE *stream); |
|---|
| 76 | #if defined HAVE_FREOPEN64 |
|---|
| 77 | static FILE * (*ORIG(freopen64))(const char *path, const char *mode, |
|---|
| 78 | FILE *stream); |
|---|
| 79 | #endif |
|---|
| 80 | #if defined HAVE___FREOPEN64 |
|---|
| 81 | static FILE * (*ORIG(__freopen64)) (const char *path, const char *mode, |
|---|
| 82 | FILE *stream); |
|---|
| 83 | #endif |
|---|
| 84 | static int (*ORIG(fseek)) (FILE *stream, long offset, int whence); |
|---|
| 85 | #if defined HAVE_FSEEKO |
|---|
| 86 | static int (*ORIG(fseeko)) (FILE *stream, off_t offset, int whence); |
|---|
| 87 | #endif |
|---|
| 88 | #if defined HAVE_FSEEKO64 |
|---|
| 89 | static int (*ORIG(fseeko64)) (FILE *stream, off_t offset, int whence); |
|---|
| 90 | #endif |
|---|
| 91 | #if defined HAVE___FSEEKO64 |
|---|
| 92 | static int (*ORIG(__fseeko64)) (FILE *stream, off_t offset, int whence); |
|---|
| 93 | #endif |
|---|
| 94 | #if defined HAVE_FSETPOS64 |
|---|
| 95 | static int (*ORIG(fsetpos64))(FILE *stream, const fpos64_t *pos); |
|---|
| 96 | #endif |
|---|
| 97 | #if defined HAVE___FSETPOS64 |
|---|
| 98 | static int (*ORIG(__fsetpos64)) (FILE *stream, const fpos64_t *pos); |
|---|
| 99 | #endif |
|---|
| 100 | static void (*ORIG(rewind)) (FILE *stream); |
|---|
| 101 | static size_t (*ORIG(fread)) (void *ptr, size_t size, size_t nmemb, |
|---|
| 102 | FILE *stream); |
|---|
| 103 | #if defined HAVE_FREAD_UNLOCKED |
|---|
| 104 | static size_t (*ORIG(fread_unlocked)) (void *ptr, size_t size, size_t nmemb, |
|---|
| 105 | FILE *stream); |
|---|
| 106 | #endif |
|---|
| 107 | static int (*ORIG(getc)) (FILE *stream); |
|---|
| 108 | static int (*ORIG(getchar)) (void); |
|---|
| 109 | static int (*ORIG(fgetc)) (FILE *stream); |
|---|
| 110 | #if defined HAVE__IO_GETC |
|---|
| 111 | static int (*ORIG(_IO_getc)) (FILE *stream); |
|---|
| 112 | #endif |
|---|
| 113 | #if defined HAVE_GETC_UNLOCKED |
|---|
| 114 | static int (*ORIG(getc_unlocked)) (FILE *stream); |
|---|
| 115 | #endif |
|---|
| 116 | #if defined HAVE_GETCHAR_UNLOCKED |
|---|
| 117 | static int (*ORIG(getchar_unlocked)) (void); |
|---|
| 118 | #endif |
|---|
| 119 | #if defined HAVE_FGETC_UNLOCKED |
|---|
| 120 | static int (*ORIG(fgetc_unlocked)) (FILE *stream); |
|---|
| 121 | #endif |
|---|
| 122 | static char * (*ORIG(fgets)) (char *s, int size, FILE *stream); |
|---|
| 123 | #if defined HAVE_FGETS_UNLOCKED |
|---|
| 124 | static char * (*ORIG(fgets_unlocked)) (char *s, int size, FILE *stream); |
|---|
| 125 | #endif |
|---|
| 126 | static int (*ORIG(ungetc)) (int c, FILE *stream); |
|---|
| 127 | static int (*ORIG(fclose)) (FILE *fp); |
|---|
| 128 | |
|---|
| 129 | /* Additional GNUisms */ |
|---|
| 130 | #if defined HAVE_GETLINE |
|---|
| 131 | static ssize_t (*ORIG(getline)) (char **lineptr, size_t *n, FILE *stream); |
|---|
| 132 | #endif |
|---|
| 133 | #if defined HAVE_GETDELIM |
|---|
| 134 | static ssize_t (*ORIG(getdelim)) (char **lineptr, size_t *n, int delim, |
|---|
| 135 | FILE *stream); |
|---|
| 136 | #endif |
|---|
| 137 | #if defined HAVE___GETDELIM |
|---|
| 138 | static ssize_t (*ORIG(__getdelim)) (char **lineptr, size_t *n, int delim, |
|---|
| 139 | FILE *stream); |
|---|
| 140 | #endif |
|---|
| 141 | #if defined HAVE___UFLOW |
|---|
| 142 | static int (*ORIG(__uflow)) (FILE *fp); |
|---|
| 143 | #endif |
|---|
| 144 | |
|---|
| 145 | /* Additional BSDisms */ |
|---|
| 146 | #if defined HAVE_FGETLN |
|---|
| 147 | static char * (*ORIG(fgetln)) (FILE *stream, size_t *len); |
|---|
| 148 | #endif |
|---|
| 149 | #if defined HAVE___SREFILL |
|---|
| 150 | int (*ORIG(__srefill)) (FILE *fp); |
|---|
| 151 | #endif |
|---|
| 152 | #if defined HAVE___SRGET && !defined HAVE___SREFILL |
|---|
| 153 | int (*ORIG(__srget)) (FILE *fp); |
|---|
| 154 | #endif |
|---|
| 155 | |
|---|
| 156 | /* Additional HP-UXisms */ |
|---|
| 157 | #if defined HAVE___FILBUF |
|---|
| 158 | int (*ORIG(__filbuf)) (FILE *fp); |
|---|
| 159 | #endif |
|---|
| 160 | |
|---|
| 161 | /* Helper functions for refill-like functions */ |
|---|
| 162 | #if defined HAVE___FILBUF || defined HAVE___SRGET || defined HAVE___UFLOW |
|---|
| 163 | static inline uint8_t *get_stream_ptr(FILE *stream) |
|---|
| 164 | { |
|---|
| 165 | return (uint8_t *)stream->FILE_PTR; |
|---|
| 166 | } |
|---|
| 167 | |
|---|
| 168 | static inline int get_stream_cnt(FILE *stream) |
|---|
| 169 | { |
|---|
| 170 | # if defined HAVE_GLIBC_FP |
|---|
| 171 | return (int)((uint8_t *)stream->FILE_CNT - (uint8_t *)stream->FILE_PTR); |
|---|
| 172 | # else |
|---|
| 173 | return stream->FILE_CNT; |
|---|
| 174 | # endif |
|---|
| 175 | } |
|---|
| 176 | #endif |
|---|
| 177 | |
|---|
| 178 | /* Our function wrappers */ |
|---|
| 179 | #if defined REFILL_ONLY_STDIO /* Fuzz fp if we have __srefill() */ |
|---|
| 180 | # define FOPEN_FUZZ() \ |
|---|
| 181 | _zz_fuzz(fd, get_stream_ptr(ret), get_stream_cnt(ret)) |
|---|
| 182 | #else |
|---|
| 183 | # define FOPEN_FUZZ() |
|---|
| 184 | #endif |
|---|
| 185 | |
|---|
| 186 | #define BEGIN_STREAM(fp) \ |
|---|
| 187 | debug2("oldstream([%i], %p, %i)", fileno(fp), \ |
|---|
| 188 | get_stream_ptr(fp), get_stream_cnt(fp)); |
|---|
| 189 | |
|---|
| 190 | #define END_STREAM(fp) \ |
|---|
| 191 | debug2("newstream([%i], %p, %i)", fileno(fp), \ |
|---|
| 192 | get_stream_ptr(fp), get_stream_cnt(fp)); |
|---|
| 193 | |
|---|
| 194 | #define FOPEN(fn) \ |
|---|
| 195 | do \ |
|---|
| 196 | { \ |
|---|
| 197 | LOADSYM(fn); \ |
|---|
| 198 | if(!_zz_ready) \ |
|---|
| 199 | return ORIG(fn)(path, mode); \ |
|---|
| 200 | _zz_lock(-1); \ |
|---|
| 201 | ret = ORIG(fn)(path, mode); \ |
|---|
| 202 | _zz_unlock(-1); \ |
|---|
| 203 | if(ret && _zz_mustwatch(path)) \ |
|---|
| 204 | { \ |
|---|
| 205 | int fd = fileno(ret); \ |
|---|
| 206 | _zz_register(fd); \ |
|---|
| 207 | debug("%s(\"%s\", \"%s\") = [%i]", __func__, path, mode, fd); \ |
|---|
| 208 | END_STREAM(ret); \ |
|---|
| 209 | FOPEN_FUZZ(); \ |
|---|
| 210 | } \ |
|---|
| 211 | } while(0) |
|---|
| 212 | |
|---|
| 213 | FILE *NEW(fopen)(const char *path, const char *mode) |
|---|
| 214 | { |
|---|
| 215 | FILE *ret; FOPEN(fopen); return ret; |
|---|
| 216 | } |
|---|
| 217 | |
|---|
| 218 | #if defined HAVE_FOPEN64 |
|---|
| 219 | FILE *NEW(fopen64)(const char *path, const char *mode) |
|---|
| 220 | { |
|---|
| 221 | FILE *ret; FOPEN(fopen64); return ret; |
|---|
| 222 | } |
|---|
| 223 | #endif |
|---|
| 224 | |
|---|
| 225 | #if defined HAVE___FOPEN64 |
|---|
| 226 | FILE *NEW(__fopen64)(const char *path, const char *mode) |
|---|
| 227 | { |
|---|
| 228 | FILE *ret; FOPEN(__fopen64); return ret; |
|---|
| 229 | } |
|---|
| 230 | #endif |
|---|
| 231 | |
|---|
| 232 | #define FREOPEN(fn) \ |
|---|
| 233 | do \ |
|---|
| 234 | { \ |
|---|
| 235 | int fd0 = -1, fd1 = -1, disp = 0; \ |
|---|
| 236 | LOADSYM(fn); \ |
|---|
| 237 | if(_zz_ready && (fd0 = fileno(stream)) >= 0 && _zz_iswatched(fd0)) \ |
|---|
| 238 | { \ |
|---|
| 239 | _zz_unregister(fd0); \ |
|---|
| 240 | disp = 1; \ |
|---|
| 241 | } \ |
|---|
| 242 | _zz_lock(-1); \ |
|---|
| 243 | ret = ORIG(fn)(path, mode, stream); \ |
|---|
| 244 | _zz_unlock(-1); \ |
|---|
| 245 | if(ret && _zz_mustwatch(path)) \ |
|---|
| 246 | { \ |
|---|
| 247 | fd1 = fileno(ret); \ |
|---|
| 248 | _zz_register(fd1); \ |
|---|
| 249 | disp = 1; \ |
|---|
| 250 | } \ |
|---|
| 251 | if(disp) \ |
|---|
| 252 | debug("%s(\"%s\", \"%s\", [%i]) = [%i]", __func__, \ |
|---|
| 253 | path, mode, fd0, fd1); \ |
|---|
| 254 | } while(0) |
|---|
| 255 | |
|---|
| 256 | FILE *NEW(freopen)(const char *path, const char *mode, FILE *stream) |
|---|
| 257 | { |
|---|
| 258 | FILE *ret; FREOPEN(freopen); return ret; |
|---|
| 259 | } |
|---|
| 260 | |
|---|
| 261 | #if defined HAVE_FREOPEN64 |
|---|
| 262 | FILE *NEW(freopen64)(const char *path, const char *mode, FILE *stream) |
|---|
| 263 | { |
|---|
| 264 | FILE *ret; FREOPEN(freopen64); return ret; |
|---|
| 265 | } |
|---|
| 266 | #endif |
|---|
| 267 | |
|---|
| 268 | #if defined HAVE___FREOPEN64 |
|---|
| 269 | FILE *NEW(__freopen64)(const char *path, const char *mode, FILE *stream) |
|---|
| 270 | { |
|---|
| 271 | FILE *ret; FREOPEN(__freopen64); return ret; |
|---|
| 272 | } |
|---|
| 273 | #endif |
|---|
| 274 | |
|---|
| 275 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 276 | # define FSEEK_FUZZ(fn2) |
|---|
| 277 | #else |
|---|
| 278 | # define FSEEK_FUZZ(fn2) \ |
|---|
| 279 | if(ret == 0) \ |
|---|
| 280 | { \ |
|---|
| 281 | /* FIXME: check what happens when fseek()ing a pipe */ \ |
|---|
| 282 | switch(whence) \ |
|---|
| 283 | { \ |
|---|
| 284 | case SEEK_END: \ |
|---|
| 285 | offset = fn2(stream); \ |
|---|
| 286 | /* fall through */ \ |
|---|
| 287 | case SEEK_SET: \ |
|---|
| 288 | _zz_setpos(fd, offset); \ |
|---|
| 289 | break; \ |
|---|
| 290 | case SEEK_CUR: \ |
|---|
| 291 | _zz_addpos(fd, offset); \ |
|---|
| 292 | break; \ |
|---|
| 293 | } \ |
|---|
| 294 | } |
|---|
| 295 | #endif |
|---|
| 296 | |
|---|
| 297 | #define FSEEK(fn, fn2) \ |
|---|
| 298 | do \ |
|---|
| 299 | { \ |
|---|
| 300 | int fd; \ |
|---|
| 301 | LOADSYM(fn); \ |
|---|
| 302 | fd = fileno(stream); \ |
|---|
| 303 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 304 | return ORIG(fn)(stream, offset, whence); \ |
|---|
| 305 | BEGIN_STREAM(stream); \ |
|---|
| 306 | _zz_lock(fd); \ |
|---|
| 307 | ret = ORIG(fn)(stream, offset, whence); \ |
|---|
| 308 | _zz_unlock(fd); \ |
|---|
| 309 | debug("%s([%i], %lli, %i) = %i", __func__, \ |
|---|
| 310 | fd, (long long int)offset, whence, ret); \ |
|---|
| 311 | FSEEK_FUZZ(fn2) \ |
|---|
| 312 | END_STREAM(stream); \ |
|---|
| 313 | } while(0) |
|---|
| 314 | |
|---|
| 315 | int NEW(fseek)(FILE *stream, long offset, int whence) |
|---|
| 316 | { |
|---|
| 317 | int ret; FSEEK(fseek, ftell); return ret; |
|---|
| 318 | } |
|---|
| 319 | |
|---|
| 320 | #if defined HAVE_FSEEKO |
|---|
| 321 | int NEW(fseeko)(FILE *stream, off_t offset, int whence) |
|---|
| 322 | { |
|---|
| 323 | int ret; FSEEK(fseeko, ftello); return ret; |
|---|
| 324 | } |
|---|
| 325 | #endif |
|---|
| 326 | |
|---|
| 327 | #if defined HAVE_FSEEKO64 |
|---|
| 328 | int NEW(fseeko64)(FILE *stream, off64_t offset, int whence) |
|---|
| 329 | { |
|---|
| 330 | int ret; FSEEK(fseeko64, ftello64); return ret; |
|---|
| 331 | } |
|---|
| 332 | #endif |
|---|
| 333 | |
|---|
| 334 | #if defined HAVE___FSEEKO64 |
|---|
| 335 | int NEW(__fseeko64)(FILE *stream, off64_t offset, int whence) |
|---|
| 336 | { |
|---|
| 337 | int ret; FSEEK(__fseeko64, ftello); return ret; |
|---|
| 338 | } |
|---|
| 339 | #endif |
|---|
| 340 | |
|---|
| 341 | #define FSETPOS(fn) \ |
|---|
| 342 | do \ |
|---|
| 343 | { \ |
|---|
| 344 | int fd; \ |
|---|
| 345 | LOADSYM(fn); \ |
|---|
| 346 | fd = fileno(stream); \ |
|---|
| 347 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 348 | return ORIG(fn)(stream, pos); \ |
|---|
| 349 | BEGIN_STREAM(stream); \ |
|---|
| 350 | _zz_lock(fd); \ |
|---|
| 351 | ret = ORIG(fn)(stream, pos); \ |
|---|
| 352 | _zz_unlock(fd); \ |
|---|
| 353 | debug("%s([%i], %lli) = %i", __func__, \ |
|---|
| 354 | fd, (long long int)FPOS_CAST(*pos), ret); \ |
|---|
| 355 | _zz_setpos(fd, (int64_t)FPOS_CAST(*pos)); \ |
|---|
| 356 | END_STREAM(stream); \ |
|---|
| 357 | } \ |
|---|
| 358 | while(0) |
|---|
| 359 | |
|---|
| 360 | #if defined HAVE_FSETPOS64 |
|---|
| 361 | int NEW(fsetpos64)(FILE *stream, const fpos64_t *pos) |
|---|
| 362 | { |
|---|
| 363 | int ret; FSETPOS(fsetpos64); return ret; |
|---|
| 364 | } |
|---|
| 365 | #endif |
|---|
| 366 | |
|---|
| 367 | #if defined HAVE___FSETPOS64 |
|---|
| 368 | int NEW(__fsetpos64)(FILE *stream, const fpos64_t *pos) |
|---|
| 369 | { |
|---|
| 370 | int ret; FSETPOS(__fsetpos64); return ret; |
|---|
| 371 | } |
|---|
| 372 | #endif |
|---|
| 373 | |
|---|
| 374 | void NEW(rewind)(FILE *stream) |
|---|
| 375 | { |
|---|
| 376 | int fd; |
|---|
| 377 | |
|---|
| 378 | LOADSYM(rewind); |
|---|
| 379 | fd = fileno(stream); |
|---|
| 380 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) |
|---|
| 381 | { |
|---|
| 382 | ORIG(rewind)(stream); |
|---|
| 383 | return; |
|---|
| 384 | } |
|---|
| 385 | |
|---|
| 386 | _zz_lock(fd); |
|---|
| 387 | ORIG(rewind)(stream); |
|---|
| 388 | _zz_unlock(fd); |
|---|
| 389 | debug("%s([%i])", __func__, fd); |
|---|
| 390 | |
|---|
| 391 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 392 | #else |
|---|
| 393 | /* FIXME: check what happens when rewind()ing a pipe */ |
|---|
| 394 | _zz_setpos(fd, 0); |
|---|
| 395 | #endif |
|---|
| 396 | } |
|---|
| 397 | |
|---|
| 398 | #if defined HAVE___FILBUF || defined HAVE___SRGET || defined HAVE___UFLOW |
|---|
| 399 | # define FREAD_PREFUZZ() \ |
|---|
| 400 | do \ |
|---|
| 401 | { \ |
|---|
| 402 | int64_t tmp = _zz_getpos(fd); \ |
|---|
| 403 | _zz_setpos(fd, pos); \ |
|---|
| 404 | already_fuzzed = _zz_getfuzzed(fd); \ |
|---|
| 405 | _zz_setpos(fd, tmp); \ |
|---|
| 406 | } \ |
|---|
| 407 | while(0) |
|---|
| 408 | #else |
|---|
| 409 | # define FREAD_PREFUZZ() do {} while(0) |
|---|
| 410 | #endif |
|---|
| 411 | |
|---|
| 412 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 413 | # define FREAD_FUZZ() \ |
|---|
| 414 | do \ |
|---|
| 415 | { \ |
|---|
| 416 | debug("%s(%p, %li, %li, [%i]) = %li", __func__, ptr, \ |
|---|
| 417 | (long int)size, (long int)nmemb, fd, (long int)ret); \ |
|---|
| 418 | } while(0) |
|---|
| 419 | #else |
|---|
| 420 | # define FREAD_FUZZ() \ |
|---|
| 421 | do \ |
|---|
| 422 | { \ |
|---|
| 423 | int64_t newpos = ftell(stream); \ |
|---|
| 424 | /* XXX: the number of bytes read is not ret * size, because \ |
|---|
| 425 | * a partial read may have advanced the stream pointer. However, \ |
|---|
| 426 | * when reading from a pipe ftell() will return 0, and ret * size \ |
|---|
| 427 | * is then better than nothing. */ \ |
|---|
| 428 | if(newpos <= 0) \ |
|---|
| 429 | { \ |
|---|
| 430 | pos = _zz_getpos(fd); \ |
|---|
| 431 | newpos = pos + ret * size; \ |
|---|
| 432 | } \ |
|---|
| 433 | if(newpos != pos) \ |
|---|
| 434 | { \ |
|---|
| 435 | char *b = ptr; \ |
|---|
| 436 | /* Skip bytes that were already fuzzed by __filbuf or __srget */ \ |
|---|
| 437 | if(newpos > pos + already_fuzzed) \ |
|---|
| 438 | { \ |
|---|
| 439 | _zz_setpos(fd, pos + already_fuzzed); \ |
|---|
| 440 | _zz_fuzz(fd, ptr, newpos - pos - already_fuzzed); \ |
|---|
| 441 | } \ |
|---|
| 442 | _zz_setpos(fd, newpos); \ |
|---|
| 443 | if(newpos >= pos + 4) \ |
|---|
| 444 | debug("%s(%p, %li, %li, [%i]) = %li \"%c%c%c%c...", __func__, \ |
|---|
| 445 | ptr, (long int)size, (long int)nmemb, fd, \ |
|---|
| 446 | (long int)ret, b[0], b[1], b[2], b[3]); \ |
|---|
| 447 | else \ |
|---|
| 448 | debug("%s(%p, %li, %li, [%i]) = %li \"%c...", __func__, ptr, \ |
|---|
| 449 | (long int)size, (long int)nmemb, fd, \ |
|---|
| 450 | (long int)ret, b[0]); \ |
|---|
| 451 | } \ |
|---|
| 452 | else \ |
|---|
| 453 | debug("%s(%p, %li, %li, [%i]) = %li", __func__, ptr, \ |
|---|
| 454 | (long int)size, (long int)nmemb, fd, (long int)ret); \ |
|---|
| 455 | } while(0) |
|---|
| 456 | #endif |
|---|
| 457 | |
|---|
| 458 | #define FREAD(fn) \ |
|---|
| 459 | do \ |
|---|
| 460 | { \ |
|---|
| 461 | int64_t pos; \ |
|---|
| 462 | int fd, already_fuzzed = 0; \ |
|---|
| 463 | LOADSYM(fn); \ |
|---|
| 464 | fd = fileno(stream); \ |
|---|
| 465 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 466 | return ORIG(fn)(ptr, size, nmemb, stream); \ |
|---|
| 467 | BEGIN_STREAM(stream); \ |
|---|
| 468 | pos = ftell(stream); \ |
|---|
| 469 | _zz_lock(fd); \ |
|---|
| 470 | ret = ORIG(fn)(ptr, size, nmemb, stream); \ |
|---|
| 471 | _zz_unlock(fd); \ |
|---|
| 472 | FREAD_PREFUZZ(); \ |
|---|
| 473 | FREAD_FUZZ(); \ |
|---|
| 474 | END_STREAM(stream); \ |
|---|
| 475 | } while(0) |
|---|
| 476 | |
|---|
| 477 | size_t NEW(fread)(void *ptr, size_t size, size_t nmemb, FILE *stream) |
|---|
| 478 | { |
|---|
| 479 | size_t ret; FREAD(fread); return ret; |
|---|
| 480 | } |
|---|
| 481 | |
|---|
| 482 | #if defined HAVE_FREAD_UNLOCKED |
|---|
| 483 | #undef fread_unlocked /* can be a macro; we don’t want that */ |
|---|
| 484 | size_t NEW(fread_unlocked)(void *ptr, size_t size, size_t nmemb, FILE *stream) |
|---|
| 485 | { |
|---|
| 486 | size_t ret; FREAD(fread_unlocked); return ret; |
|---|
| 487 | } |
|---|
| 488 | #endif |
|---|
| 489 | |
|---|
| 490 | #if defined HAVE___FILBUF || defined HAVE___SRGET || defined HAVE___UFLOW |
|---|
| 491 | # define FGETC_PREFUZZ already_fuzzed = _zz_getfuzzed(fd); |
|---|
| 492 | #else |
|---|
| 493 | # define FGETC_PREFUZZ |
|---|
| 494 | #endif |
|---|
| 495 | |
|---|
| 496 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 497 | # define FGETC_FUZZ |
|---|
| 498 | #else |
|---|
| 499 | # define FGETC_FUZZ \ |
|---|
| 500 | if(ret != EOF) \ |
|---|
| 501 | { \ |
|---|
| 502 | uint8_t ch = ret; \ |
|---|
| 503 | if(already_fuzzed <= 0) \ |
|---|
| 504 | _zz_fuzz(fd, &ch, 1); \ |
|---|
| 505 | _zz_addpos(fd, 1); \ |
|---|
| 506 | ret = ch; \ |
|---|
| 507 | } |
|---|
| 508 | #endif |
|---|
| 509 | |
|---|
| 510 | #define FGETC(fn, s, arg) \ |
|---|
| 511 | do { \ |
|---|
| 512 | int fd, already_fuzzed = 0; \ |
|---|
| 513 | LOADSYM(fn); \ |
|---|
| 514 | fd = fileno(s); \ |
|---|
| 515 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 516 | return ORIG(fn)(arg); \ |
|---|
| 517 | BEGIN_STREAM(s); \ |
|---|
| 518 | _zz_lock(fd); \ |
|---|
| 519 | ret = ORIG(fn)(arg); \ |
|---|
| 520 | _zz_unlock(fd); \ |
|---|
| 521 | FGETC_PREFUZZ \ |
|---|
| 522 | FGETC_FUZZ \ |
|---|
| 523 | if(ret == EOF) \ |
|---|
| 524 | debug("%s([%i]) = EOF", __func__, fd); \ |
|---|
| 525 | else \ |
|---|
| 526 | debug("%s([%i]) = '%c'", __func__, fd, ret); \ |
|---|
| 527 | END_STREAM(s); \ |
|---|
| 528 | } while(0) |
|---|
| 529 | |
|---|
| 530 | #undef getc /* can be a macro; we don’t want that */ |
|---|
| 531 | int NEW(getc)(FILE *stream) |
|---|
| 532 | { |
|---|
| 533 | int ret; FGETC(getc, stream, stream); return ret; |
|---|
| 534 | } |
|---|
| 535 | |
|---|
| 536 | #undef getchar /* can be a macro; we don’t want that */ |
|---|
| 537 | int NEW(getchar)(void) |
|---|
| 538 | { |
|---|
| 539 | int ret; FGETC(getchar, stdin, /* empty */); return ret; |
|---|
| 540 | } |
|---|
| 541 | |
|---|
| 542 | int NEW(fgetc)(FILE *stream) |
|---|
| 543 | { |
|---|
| 544 | int ret; FGETC(fgetc, stream, stream); return ret; |
|---|
| 545 | } |
|---|
| 546 | |
|---|
| 547 | #if defined HAVE__IO_GETC |
|---|
| 548 | int NEW(_IO_getc)(FILE *stream) |
|---|
| 549 | { |
|---|
| 550 | int ret; FGETC(_IO_getc, stream, stream); return ret; |
|---|
| 551 | } |
|---|
| 552 | #endif |
|---|
| 553 | |
|---|
| 554 | #if defined HAVE_GETC_UNLOCKED |
|---|
| 555 | #undef getc_unlocked /* can be a macro; we don’t want that */ |
|---|
| 556 | int NEW(getc_unlocked)(FILE *stream) |
|---|
| 557 | { |
|---|
| 558 | int ret; FGETC(getc_unlocked, stream, stream); return ret; |
|---|
| 559 | } |
|---|
| 560 | #endif |
|---|
| 561 | |
|---|
| 562 | #if defined HAVE_GETCHAR_UNLOCKED |
|---|
| 563 | #undef getchar_unlocked /* can be a macro; we don’t want that */ |
|---|
| 564 | int NEW(getchar_unlocked)(void) |
|---|
| 565 | { |
|---|
| 566 | int ret; FGETC(getchar_unlocked, stdin, /* empty */); return ret; |
|---|
| 567 | } |
|---|
| 568 | #endif |
|---|
| 569 | |
|---|
| 570 | #if defined HAVE_FGETC_UNLOCKED |
|---|
| 571 | #undef fgetc_unlocked /* can be a macro; we don’t want that */ |
|---|
| 572 | int NEW(fgetc_unlocked)(FILE *stream) |
|---|
| 573 | { |
|---|
| 574 | int ret; FGETC(fgetc_unlocked, stream, stream); return ret; |
|---|
| 575 | } |
|---|
| 576 | #endif |
|---|
| 577 | |
|---|
| 578 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 579 | # define FGETS_FUZZ(fn, fn2) \ |
|---|
| 580 | _zz_lock(fd); \ |
|---|
| 581 | ret = ORIG(fn)(s, size, stream); \ |
|---|
| 582 | _zz_unlock(fd); |
|---|
| 583 | #else |
|---|
| 584 | # define FGETS_FUZZ(fn, fn2) \ |
|---|
| 585 | if(size <= 0) \ |
|---|
| 586 | ret = NULL; \ |
|---|
| 587 | else if(size == 1) \ |
|---|
| 588 | s[0] = '\0'; \ |
|---|
| 589 | else \ |
|---|
| 590 | { \ |
|---|
| 591 | int i; \ |
|---|
| 592 | for(i = 0; i < size - 1; i++) \ |
|---|
| 593 | { \ |
|---|
| 594 | int ch; \ |
|---|
| 595 | _zz_lock(fd); \ |
|---|
| 596 | ch = ORIG(fn2)(stream); \ |
|---|
| 597 | _zz_unlock(fd); \ |
|---|
| 598 | if(ch == EOF) \ |
|---|
| 599 | { \ |
|---|
| 600 | s[i] = '\0'; \ |
|---|
| 601 | if(!i) \ |
|---|
| 602 | ret = NULL; \ |
|---|
| 603 | break; \ |
|---|
| 604 | } \ |
|---|
| 605 | s[i] = (char)(unsigned char)ch; \ |
|---|
| 606 | _zz_fuzz(fd, (uint8_t *)s + i, 1); /* rather inefficient */ \ |
|---|
| 607 | _zz_addpos(fd, 1); \ |
|---|
| 608 | if(s[i] == '\n') \ |
|---|
| 609 | { \ |
|---|
| 610 | s[i + 1] = '\0'; \ |
|---|
| 611 | break; \ |
|---|
| 612 | } \ |
|---|
| 613 | } \ |
|---|
| 614 | } |
|---|
| 615 | #endif |
|---|
| 616 | |
|---|
| 617 | #define FGETS(fn, fn2) \ |
|---|
| 618 | do \ |
|---|
| 619 | { \ |
|---|
| 620 | int fd; \ |
|---|
| 621 | ret = s; \ |
|---|
| 622 | LOADSYM(fn); \ |
|---|
| 623 | LOADSYM(fn2); \ |
|---|
| 624 | fd = fileno(stream); \ |
|---|
| 625 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 626 | return ORIG(fn)(s, size, stream); \ |
|---|
| 627 | BEGIN_STREAM(s); \ |
|---|
| 628 | FGETS_FUZZ(fn, fn2) \ |
|---|
| 629 | debug("%s(%p, %i, [%i]) = %p", __func__, s, size, fd, ret); \ |
|---|
| 630 | END_STREAM(s); \ |
|---|
| 631 | } while(0) |
|---|
| 632 | |
|---|
| 633 | char *NEW(fgets)(char *s, int size, FILE *stream) |
|---|
| 634 | { |
|---|
| 635 | char *ret; FGETS(fgets, fgetc); return ret; |
|---|
| 636 | } |
|---|
| 637 | |
|---|
| 638 | #if defined HAVE_FGETS_UNLOCKED |
|---|
| 639 | char *NEW(fgets_unlocked)(char *s, int size, FILE *stream) |
|---|
| 640 | { |
|---|
| 641 | char *ret; FGETS(fgets_unlocked, fgetc_unlocked); return ret; |
|---|
| 642 | } |
|---|
| 643 | #endif |
|---|
| 644 | |
|---|
| 645 | int NEW(ungetc)(int c, FILE *stream) |
|---|
| 646 | { |
|---|
| 647 | int ret, fd; |
|---|
| 648 | |
|---|
| 649 | LOADSYM(ungetc); |
|---|
| 650 | fd = fileno(stream); |
|---|
| 651 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) |
|---|
| 652 | return ORIG(ungetc)(c, stream); |
|---|
| 653 | |
|---|
| 654 | BEGIN_STREAM(stream); |
|---|
| 655 | _zz_lock(fd); |
|---|
| 656 | ret = ORIG(ungetc)(c, stream); |
|---|
| 657 | _zz_unlock(fd); |
|---|
| 658 | |
|---|
| 659 | if(ret != EOF) |
|---|
| 660 | { |
|---|
| 661 | struct fuzz *fuzz = _zz_getfuzz(fd); |
|---|
| 662 | fuzz->uflag = 1; |
|---|
| 663 | fuzz->upos = _zz_getpos(fd) - 1; |
|---|
| 664 | fuzz->uchar = c; |
|---|
| 665 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 666 | #else |
|---|
| 667 | _zz_addpos(fd, -1); |
|---|
| 668 | #endif |
|---|
| 669 | } |
|---|
| 670 | |
|---|
| 671 | if(ret == EOF) |
|---|
| 672 | debug("%s(0x%02x, [%i]) = EOF", __func__, c, fd); |
|---|
| 673 | else |
|---|
| 674 | debug("%s(0x%02x, [%i]) = '%c'", __func__, c, fd, ret); |
|---|
| 675 | END_STREAM(stream); |
|---|
| 676 | return ret; |
|---|
| 677 | } |
|---|
| 678 | |
|---|
| 679 | int NEW(fclose)(FILE *fp) |
|---|
| 680 | { |
|---|
| 681 | int ret, fd; |
|---|
| 682 | |
|---|
| 683 | LOADSYM(fclose); |
|---|
| 684 | fd = fileno(fp); |
|---|
| 685 | if(!_zz_ready || !_zz_iswatched(fd)) |
|---|
| 686 | return ORIG(fclose)(fp); |
|---|
| 687 | |
|---|
| 688 | BEGIN_STREAM(fp); |
|---|
| 689 | _zz_lock(fd); |
|---|
| 690 | ret = ORIG(fclose)(fp); |
|---|
| 691 | _zz_unlock(fd); |
|---|
| 692 | debug("%s([%i]) = %i", __func__, fd, ret); |
|---|
| 693 | _zz_unregister(fd); |
|---|
| 694 | |
|---|
| 695 | return ret; |
|---|
| 696 | } |
|---|
| 697 | |
|---|
| 698 | #define GETDELIM(fn, delim, need_delim) \ |
|---|
| 699 | do { \ |
|---|
| 700 | char *line; \ |
|---|
| 701 | ssize_t done, size; \ |
|---|
| 702 | int fd, finished = 0; \ |
|---|
| 703 | LOADSYM(fn); \ |
|---|
| 704 | LOADSYM(getdelim); \ |
|---|
| 705 | LOADSYM(fgetc); \ |
|---|
| 706 | fd = fileno(stream); \ |
|---|
| 707 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 708 | { \ |
|---|
| 709 | ret = ORIG(getdelim)(lineptr, n, delim, stream); \ |
|---|
| 710 | break; \ |
|---|
| 711 | } \ |
|---|
| 712 | BEGIN_STREAM(stream); \ |
|---|
| 713 | line = *lineptr; \ |
|---|
| 714 | size = line ? *n : 0; \ |
|---|
| 715 | ret = done = finished = 0; \ |
|---|
| 716 | for(;;) \ |
|---|
| 717 | { \ |
|---|
| 718 | int ch; \ |
|---|
| 719 | if(done >= size) /* highly inefficient but I don't care */ \ |
|---|
| 720 | line = realloc(line, size = done + 1); \ |
|---|
| 721 | if(finished) \ |
|---|
| 722 | { \ |
|---|
| 723 | line[done] = '\0'; \ |
|---|
| 724 | *n = size; \ |
|---|
| 725 | *lineptr = line; \ |
|---|
| 726 | break; \ |
|---|
| 727 | } \ |
|---|
| 728 | _zz_lock(fd); \ |
|---|
| 729 | ch = ORIG(fgetc)(stream); \ |
|---|
| 730 | _zz_unlock(fd); \ |
|---|
| 731 | if(ch == EOF) \ |
|---|
| 732 | { \ |
|---|
| 733 | finished = 1; \ |
|---|
| 734 | ret = done; \ |
|---|
| 735 | } \ |
|---|
| 736 | else \ |
|---|
| 737 | { \ |
|---|
| 738 | unsigned char c = ch; \ |
|---|
| 739 | _zz_fuzz(fd, &c, 1); /* even more inefficient */ \ |
|---|
| 740 | line[done++] = c; \ |
|---|
| 741 | _zz_addpos(fd, 1); \ |
|---|
| 742 | if(c == delim) \ |
|---|
| 743 | { \ |
|---|
| 744 | finished = 1; \ |
|---|
| 745 | ret = done; \ |
|---|
| 746 | } \ |
|---|
| 747 | } \ |
|---|
| 748 | } \ |
|---|
| 749 | if(need_delim) \ |
|---|
| 750 | debug("%s(%p, %p, '%c', [%i]) = %li", __func__, \ |
|---|
| 751 | lineptr, n, delim, fd, (long int)ret); \ |
|---|
| 752 | else \ |
|---|
| 753 | debug("%s(%p, %p, [%i]) = %li", __func__, \ |
|---|
| 754 | lineptr, n, fd, (long int)ret); \ |
|---|
| 755 | END_STREAM(stream); \ |
|---|
| 756 | break; \ |
|---|
| 757 | } while(0) |
|---|
| 758 | |
|---|
| 759 | #if defined HAVE_GETLINE |
|---|
| 760 | ssize_t NEW(getline)(char **lineptr, size_t *n, FILE *stream) |
|---|
| 761 | { |
|---|
| 762 | ssize_t ret; GETDELIM(getline, '\n', 0); return ret; |
|---|
| 763 | } |
|---|
| 764 | #endif |
|---|
| 765 | |
|---|
| 766 | #if defined HAVE_GETDELIM |
|---|
| 767 | ssize_t NEW(getdelim)(char **lineptr, size_t *n, int delim, FILE *stream) |
|---|
| 768 | { |
|---|
| 769 | ssize_t ret; GETDELIM(getdelim, delim, 1); return ret; |
|---|
| 770 | } |
|---|
| 771 | #endif |
|---|
| 772 | |
|---|
| 773 | #if defined HAVE___GETDELIM |
|---|
| 774 | ssize_t NEW(__getdelim)(char **lineptr, size_t *n, int delim, FILE *stream) |
|---|
| 775 | { |
|---|
| 776 | ssize_t ret; GETDELIM(__getdelim, delim, 1); return ret; |
|---|
| 777 | } |
|---|
| 778 | #endif |
|---|
| 779 | |
|---|
| 780 | #if defined HAVE_FGETLN |
|---|
| 781 | char *NEW(fgetln)(FILE *stream, size_t *len) |
|---|
| 782 | { |
|---|
| 783 | char *ret; |
|---|
| 784 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 785 | #else |
|---|
| 786 | struct fuzz *fuzz; |
|---|
| 787 | size_t i, size; |
|---|
| 788 | #endif |
|---|
| 789 | int fd; |
|---|
| 790 | |
|---|
| 791 | LOADSYM(fgetln); |
|---|
| 792 | LOADSYM(fgetc); |
|---|
| 793 | fd = fileno(stream); |
|---|
| 794 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) |
|---|
| 795 | return ORIG(fgetln)(stream, len); |
|---|
| 796 | |
|---|
| 797 | BEGIN_STREAM(stream); |
|---|
| 798 | #if defined REFILL_ONLY_STDIO /* Don't fuzz or seek if we have __srefill() */ |
|---|
| 799 | _zz_lock(fd); |
|---|
| 800 | ret = ORIG(fgetln)(stream, len); |
|---|
| 801 | _zz_unlock(fd); |
|---|
| 802 | #else |
|---|
| 803 | fuzz = _zz_getfuzz(fd); |
|---|
| 804 | |
|---|
| 805 | for(i = size = 0; ; /* i is incremented below */) |
|---|
| 806 | { |
|---|
| 807 | int ch; |
|---|
| 808 | |
|---|
| 809 | _zz_lock(fd); |
|---|
| 810 | ch = ORIG(fgetc)(stream); |
|---|
| 811 | _zz_unlock(fd); |
|---|
| 812 | |
|---|
| 813 | if(ch == EOF) |
|---|
| 814 | break; |
|---|
| 815 | |
|---|
| 816 | if(i >= size) |
|---|
| 817 | fuzz->tmp = realloc(fuzz->tmp, (size += 80)); |
|---|
| 818 | |
|---|
| 819 | fuzz->tmp[i] = (char)(unsigned char)ch; |
|---|
| 820 | _zz_fuzz(fd, (uint8_t *)fuzz->tmp + i, 1); /* rather inefficient */ |
|---|
| 821 | _zz_addpos(fd, 1); |
|---|
| 822 | |
|---|
| 823 | if(fuzz->tmp[i++] == '\n') |
|---|
| 824 | break; |
|---|
| 825 | } |
|---|
| 826 | |
|---|
| 827 | *len = i; |
|---|
| 828 | ret = fuzz->tmp; |
|---|
| 829 | #endif |
|---|
| 830 | |
|---|
| 831 | debug("%s([%i], &%li) = %p", __func__, fd, (long int)*len, ret); |
|---|
| 832 | END_STREAM(stream); |
|---|
| 833 | return ret; |
|---|
| 834 | } |
|---|
| 835 | #endif |
|---|
| 836 | |
|---|
| 837 | #if defined HAVE___FILBUF || defined HAVE___SRGET |
|---|
| 838 | # define REFILL_RETURNS_INT 1 |
|---|
| 839 | #elif defined HAVE___UFLOW |
|---|
| 840 | # define REFILL_RETURNS_INT 0 |
|---|
| 841 | #endif |
|---|
| 842 | |
|---|
| 843 | #define REFILL(fn, fn_advances) \ |
|---|
| 844 | do \ |
|---|
| 845 | { \ |
|---|
| 846 | int64_t pos; \ |
|---|
| 847 | off_t newpos; \ |
|---|
| 848 | int fd; \ |
|---|
| 849 | LOADSYM(fn); \ |
|---|
| 850 | fd = fileno(fp); \ |
|---|
| 851 | if(!_zz_ready || !_zz_iswatched(fd) || !_zz_isactive(fd)) \ |
|---|
| 852 | return ORIG(fn)(fp); \ |
|---|
| 853 | BEGIN_STREAM(fp); \ |
|---|
| 854 | pos = _zz_getpos(fd); \ |
|---|
| 855 | _zz_lock(fd); \ |
|---|
| 856 | ret = ORIG(fn)(fp); \ |
|---|
| 857 | newpos = lseek(fd, 0, SEEK_CUR); \ |
|---|
| 858 | _zz_unlock(fd); \ |
|---|
| 859 | if(ret != EOF) \ |
|---|
| 860 | { \ |
|---|
| 861 | int already_fuzzed = 0; \ |
|---|
| 862 | if(fn_advances) \ |
|---|
| 863 | { \ |
|---|
| 864 | uint8_t ch = (uint8_t)(unsigned int)ret; \ |
|---|
| 865 | if(newpos != -1) \ |
|---|
| 866 | _zz_setpos(fd, newpos - get_stream_cnt(fp) - 1); \ |
|---|
| 867 | already_fuzzed = _zz_getfuzzed(fd); \ |
|---|
| 868 | _zz_fuzz(fd, &ch, 1); \ |
|---|
| 869 | ret = get_stream_ptr(fp)[-1] = ch; \ |
|---|
| 870 | _zz_setfuzzed(fd, get_stream_cnt(fp) + 1); \ |
|---|
| 871 | _zz_addpos(fd, 1); \ |
|---|
| 872 | } \ |
|---|
| 873 | else \ |
|---|
| 874 | { \ |
|---|
| 875 | _zz_setfuzzed(fd, get_stream_cnt(fp)); \ |
|---|
| 876 | if(newpos != -1) \ |
|---|
| 877 | _zz_setpos(fd, newpos - get_stream_cnt(fp)); \ |
|---|
| 878 | } \ |
|---|
| 879 | if(get_stream_cnt(fp) > already_fuzzed) \ |
|---|
| 880 | { \ |
|---|
| 881 | _zz_addpos(fd, already_fuzzed); \ |
|---|
| 882 | _zz_fuzz(fd, get_stream_ptr(fp), \ |
|---|
| 883 | get_stream_cnt(fp) - already_fuzzed); \ |
|---|
| 884 | } \ |
|---|
| 885 | _zz_addpos(fd, get_stream_cnt(fp) - already_fuzzed); \ |
|---|
| 886 | } \ |
|---|
| 887 | _zz_setpos(fd, pos); /* FIXME: do we always need to do this? */ \ |
|---|
| 888 | if (REFILL_RETURNS_INT) \ |
|---|
| 889 | debug("%s([%i]) = %i", __func__, fd, ret); \ |
|---|
| 890 | else if (ret == EOF) \ |
|---|
| 891 | debug("%s([%i]) = EOF", __func__, fd, ret); \ |
|---|
| 892 | else \ |
|---|
| 893 | debug("%s([%i]) = '%c'", __func__, fd, ret); \ |
|---|
| 894 | END_STREAM(fp); \ |
|---|
| 895 | } \ |
|---|
| 896 | while(0) |
|---|
| 897 | |
|---|
| 898 | #if defined HAVE___SREFILL |
|---|
| 899 | int NEW(__srefill)(FILE *fp) |
|---|
| 900 | { |
|---|
| 901 | int ret; REFILL(__srefill, 0); return ret; |
|---|
| 902 | } |
|---|
| 903 | #endif |
|---|
| 904 | |
|---|
| 905 | #if defined HAVE___SRGET && !defined HAVE___SREFILL |
|---|
| 906 | int NEW(__srget)(FILE *fp) |
|---|
| 907 | { |
|---|
| 908 | int ret; REFILL(__srget, 1); return ret; |
|---|
| 909 | } |
|---|
| 910 | #endif |
|---|
| 911 | |
|---|
| 912 | #if defined HAVE___FILBUF |
|---|
| 913 | int NEW(__filbuf)(FILE *fp) |
|---|
| 914 | { |
|---|
| 915 | int ret; REFILL(__filbuf, 1); return ret; |
|---|
| 916 | } |
|---|
| 917 | #endif |
|---|
| 918 | |
|---|
| 919 | #if defined HAVE___UFLOW |
|---|
| 920 | int NEW(__uflow)(FILE *fp) |
|---|
| 921 | { |
|---|
| 922 | int ret; REFILL(__uflow, 1); return ret; |
|---|
| 923 | } |
|---|
| 924 | #endif |
|---|
| 925 | |
|---|