[3320] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * Support code for the hexdump and od applets,
|
---|
| 4 | * based on code from util-linux v 2.11l
|
---|
| 5 | *
|
---|
| 6 | * Copyright (c) 1989
|
---|
| 7 | * The Regents of the University of California. All rights reserved.
|
---|
| 8 | *
|
---|
| 9 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
| 10 | *
|
---|
| 11 | * Original copyright notice is retained at the end of this file.
|
---|
| 12 | */
|
---|
| 13 |
|
---|
| 14 | #include "libbb.h"
|
---|
| 15 | #include "dump.h"
|
---|
| 16 |
|
---|
| 17 | static const char index_str[] ALIGN1 = ".#-+ 0123456789";
|
---|
| 18 |
|
---|
| 19 | static const char size_conv_str[] ALIGN1 =
|
---|
| 20 | "\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
|
---|
| 21 |
|
---|
| 22 | static const char lcc[] ALIGN1 = "diouxX";
|
---|
| 23 |
|
---|
| 24 |
|
---|
| 25 | typedef struct priv_dumper_t {
|
---|
| 26 | dumper_t pub;
|
---|
| 27 |
|
---|
| 28 | char **argv;
|
---|
| 29 | FU *endfu;
|
---|
| 30 | off_t savaddress; /* saved address/offset in stream */
|
---|
| 31 | off_t eaddress; /* end address */
|
---|
| 32 | off_t address; /* address/offset in stream */
|
---|
| 33 | int blocksize;
|
---|
| 34 | smallint exitval; /* final exit value */
|
---|
| 35 |
|
---|
| 36 | /* former statics */
|
---|
| 37 | smallint next__done;
|
---|
| 38 | smallint get__ateof; // = 1;
|
---|
| 39 | unsigned char *get__curp;
|
---|
| 40 | unsigned char *get__savp;
|
---|
| 41 | } priv_dumper_t;
|
---|
| 42 |
|
---|
| 43 | dumper_t* FAST_FUNC alloc_dumper(void)
|
---|
| 44 | {
|
---|
| 45 | priv_dumper_t *dumper = xzalloc(sizeof(*dumper));
|
---|
| 46 | dumper->pub.dump_length = -1;
|
---|
| 47 | dumper->pub.dump_vflag = FIRST;
|
---|
| 48 | dumper->get__ateof = 1;
|
---|
| 49 | return &dumper->pub;
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 |
|
---|
| 53 | static NOINLINE int bb_dump_size(FS *fs)
|
---|
| 54 | {
|
---|
| 55 | FU *fu;
|
---|
| 56 | int bcnt, cur_size;
|
---|
| 57 | char *fmt;
|
---|
| 58 | const char *p;
|
---|
| 59 | int prec;
|
---|
| 60 |
|
---|
| 61 | /* figure out the data block bb_dump_size needed for each format unit */
|
---|
| 62 | for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
| 63 | if (fu->bcnt) {
|
---|
| 64 | cur_size += fu->bcnt * fu->reps;
|
---|
| 65 | continue;
|
---|
| 66 | }
|
---|
| 67 | for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
|
---|
| 68 | if (*fmt != '%')
|
---|
| 69 | continue;
|
---|
| 70 | /*
|
---|
| 71 | * skip any special chars -- save precision in
|
---|
| 72 | * case it's a %s format.
|
---|
| 73 | */
|
---|
| 74 | while (strchr(index_str + 1, *++fmt));
|
---|
| 75 | if (*fmt == '.' && isdigit(*++fmt)) {
|
---|
| 76 | prec = atoi(fmt);
|
---|
| 77 | while (isdigit(*++fmt))
|
---|
| 78 | continue;
|
---|
| 79 | }
|
---|
| 80 | p = strchr(size_conv_str + 12, *fmt);
|
---|
| 81 | if (!p) {
|
---|
| 82 | if (*fmt == 's') {
|
---|
| 83 | bcnt += prec;
|
---|
| 84 | } else if (*fmt == '_') {
|
---|
| 85 | ++fmt;
|
---|
| 86 | if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
|
---|
| 87 | bcnt += 1;
|
---|
| 88 | }
|
---|
| 89 | }
|
---|
| 90 | } else {
|
---|
| 91 | bcnt += size_conv_str[p - (size_conv_str + 12)];
|
---|
| 92 | }
|
---|
| 93 | }
|
---|
| 94 | cur_size += bcnt * fu->reps;
|
---|
| 95 | }
|
---|
| 96 | return cur_size;
|
---|
| 97 | }
|
---|
| 98 |
|
---|
| 99 | static NOINLINE void rewrite(priv_dumper_t *dumper, FS *fs)
|
---|
| 100 | {
|
---|
| 101 | enum { NOTOKAY, USEBCNT, USEPREC } sokay;
|
---|
| 102 | PR *pr, **nextpr = NULL;
|
---|
| 103 | FU *fu;
|
---|
| 104 | char *p1, *p2, *p3;
|
---|
| 105 | char savech, *fmtp;
|
---|
| 106 | const char *byte_count_str;
|
---|
| 107 | int nconv, prec = 0;
|
---|
| 108 |
|
---|
| 109 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
| 110 | /*
|
---|
| 111 | * break each format unit into print units; each
|
---|
| 112 | * conversion character gets its own.
|
---|
| 113 | */
|
---|
| 114 | for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
|
---|
| 115 | /* NOSTRICT */
|
---|
| 116 | /* DBU:[dvae@cray.com] zalloc so that forward ptrs start out NULL*/
|
---|
| 117 | pr = xzalloc(sizeof(PR));
|
---|
| 118 | if (!fu->nextpr)
|
---|
| 119 | fu->nextpr = pr;
|
---|
| 120 | /* ignore nextpr -- its unused inside the loop and is
|
---|
| 121 | * uninitialized 1st time through.
|
---|
| 122 | */
|
---|
| 123 |
|
---|
| 124 | /* skip preceding text and up to the next % sign */
|
---|
| 125 | for (p1 = fmtp; *p1 && *p1 != '%'; ++p1)
|
---|
| 126 | continue;
|
---|
| 127 |
|
---|
| 128 | /* only text in the string */
|
---|
| 129 | if (!*p1) {
|
---|
| 130 | pr->fmt = fmtp;
|
---|
| 131 | pr->flags = F_TEXT;
|
---|
| 132 | break;
|
---|
| 133 | }
|
---|
| 134 |
|
---|
| 135 | /*
|
---|
| 136 | * get precision for %s -- if have a byte count, don't
|
---|
| 137 | * need it.
|
---|
| 138 | */
|
---|
| 139 | if (fu->bcnt) {
|
---|
| 140 | sokay = USEBCNT;
|
---|
| 141 | /* skip to conversion character */
|
---|
| 142 | for (++p1; strchr(index_str, *p1); ++p1)
|
---|
| 143 | continue;
|
---|
| 144 | } else {
|
---|
| 145 | /* skip any special chars, field width */
|
---|
| 146 | while (strchr(index_str + 1, *++p1))
|
---|
| 147 | continue;
|
---|
| 148 | if (*p1 == '.' && isdigit(*++p1)) {
|
---|
| 149 | sokay = USEPREC;
|
---|
| 150 | prec = atoi(p1);
|
---|
| 151 | while (isdigit(*++p1))
|
---|
| 152 | continue;
|
---|
| 153 | } else
|
---|
| 154 | sokay = NOTOKAY;
|
---|
| 155 | }
|
---|
| 156 |
|
---|
| 157 | p2 = p1 + 1; /* set end pointer */
|
---|
| 158 |
|
---|
| 159 | /*
|
---|
| 160 | * figure out the byte count for each conversion;
|
---|
| 161 | * rewrite the format as necessary, set up blank-
|
---|
| 162 | * pbb_dump_adding for end of data.
|
---|
| 163 | */
|
---|
| 164 | if (*p1 == 'c') {
|
---|
| 165 | pr->flags = F_CHAR;
|
---|
| 166 | DO_BYTE_COUNT_1:
|
---|
| 167 | byte_count_str = "\001";
|
---|
| 168 | DO_BYTE_COUNT:
|
---|
| 169 | if (fu->bcnt) {
|
---|
| 170 | do {
|
---|
| 171 | if (fu->bcnt == *byte_count_str) {
|
---|
| 172 | break;
|
---|
| 173 | }
|
---|
| 174 | } while (*++byte_count_str);
|
---|
| 175 | }
|
---|
| 176 | /* Unlike the original, output the remainder of the format string. */
|
---|
| 177 | if (!*byte_count_str) {
|
---|
| 178 | bb_error_msg_and_die("bad byte count for conversion character %s", p1);
|
---|
| 179 | }
|
---|
| 180 | pr->bcnt = *byte_count_str;
|
---|
| 181 | } else if (*p1 == 'l') {
|
---|
| 182 | ++p2;
|
---|
| 183 | ++p1;
|
---|
| 184 | DO_INT_CONV:
|
---|
| 185 | {
|
---|
| 186 | const char *e;
|
---|
| 187 | e = strchr(lcc, *p1);
|
---|
| 188 | if (!e) {
|
---|
| 189 | goto DO_BAD_CONV_CHAR;
|
---|
| 190 | }
|
---|
| 191 | pr->flags = F_INT;
|
---|
| 192 | if (e > lcc + 1) {
|
---|
| 193 | pr->flags = F_UINT;
|
---|
| 194 | }
|
---|
| 195 | byte_count_str = "\004\002\001";
|
---|
| 196 | goto DO_BYTE_COUNT;
|
---|
| 197 | }
|
---|
| 198 | /* NOTREACHED */
|
---|
| 199 | } else if (strchr(lcc, *p1)) {
|
---|
| 200 | goto DO_INT_CONV;
|
---|
| 201 | } else if (strchr("eEfgG", *p1)) {
|
---|
| 202 | pr->flags = F_DBL;
|
---|
| 203 | byte_count_str = "\010\004";
|
---|
| 204 | goto DO_BYTE_COUNT;
|
---|
| 205 | } else if (*p1 == 's') {
|
---|
| 206 | pr->flags = F_STR;
|
---|
| 207 | if (sokay == USEBCNT) {
|
---|
| 208 | pr->bcnt = fu->bcnt;
|
---|
| 209 | } else if (sokay == USEPREC) {
|
---|
| 210 | pr->bcnt = prec;
|
---|
| 211 | } else { /* NOTOKAY */
|
---|
| 212 | bb_error_msg_and_die("%%s requires a precision or a byte count");
|
---|
| 213 | }
|
---|
| 214 | } else if (*p1 == '_') {
|
---|
| 215 | ++p2;
|
---|
| 216 | switch (p1[1]) {
|
---|
| 217 | case 'A':
|
---|
| 218 | dumper->endfu = fu;
|
---|
| 219 | fu->flags |= F_IGNORE;
|
---|
| 220 | /* FALLTHROUGH */
|
---|
| 221 | case 'a':
|
---|
| 222 | pr->flags = F_ADDRESS;
|
---|
| 223 | ++p2;
|
---|
| 224 | if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
|
---|
| 225 | goto DO_BAD_CONV_CHAR;
|
---|
| 226 | }
|
---|
| 227 | *p1 = p1[2];
|
---|
| 228 | break;
|
---|
| 229 | case 'c':
|
---|
| 230 | pr->flags = F_C;
|
---|
| 231 | /* *p1 = 'c'; set in conv_c */
|
---|
| 232 | goto DO_BYTE_COUNT_1;
|
---|
| 233 | case 'p':
|
---|
| 234 | pr->flags = F_P;
|
---|
| 235 | *p1 = 'c';
|
---|
| 236 | goto DO_BYTE_COUNT_1;
|
---|
| 237 | case 'u':
|
---|
| 238 | pr->flags = F_U;
|
---|
| 239 | /* *p1 = 'c'; set in conv_u */
|
---|
| 240 | goto DO_BYTE_COUNT_1;
|
---|
| 241 | default:
|
---|
| 242 | goto DO_BAD_CONV_CHAR;
|
---|
| 243 | }
|
---|
| 244 | } else {
|
---|
| 245 | DO_BAD_CONV_CHAR:
|
---|
| 246 | bb_error_msg_and_die("bad conversion character %%%s", p1);
|
---|
| 247 | }
|
---|
| 248 |
|
---|
| 249 | /*
|
---|
| 250 | * copy to PR format string, set conversion character
|
---|
| 251 | * pointer, update original.
|
---|
| 252 | */
|
---|
| 253 | savech = *p2;
|
---|
| 254 | p1[1] = '\0';
|
---|
| 255 | pr->fmt = xstrdup(fmtp);
|
---|
| 256 | *p2 = savech;
|
---|
| 257 | //Too early! xrealloc can move pr->fmt!
|
---|
| 258 | //pr->cchar = pr->fmt + (p1 - fmtp);
|
---|
| 259 |
|
---|
| 260 | /* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
|
---|
| 261 | * Skip subsequent text and up to the next % sign and tack the
|
---|
| 262 | * additional text onto fmt: eg. if fmt is "%x is a HEX number",
|
---|
| 263 | * we lose the " is a HEX number" part of fmt.
|
---|
| 264 | */
|
---|
| 265 | for (p3 = p2; *p3 && *p3 != '%'; p3++)
|
---|
| 266 | continue;
|
---|
| 267 | if (p3 > p2) {
|
---|
| 268 | savech = *p3;
|
---|
| 269 | *p3 = '\0';
|
---|
| 270 | pr->fmt = xrealloc(pr->fmt, strlen(pr->fmt) + (p3-p2) + 1);
|
---|
| 271 | strcat(pr->fmt, p2);
|
---|
| 272 | *p3 = savech;
|
---|
| 273 | p2 = p3;
|
---|
| 274 | }
|
---|
| 275 |
|
---|
| 276 | pr->cchar = pr->fmt + (p1 - fmtp);
|
---|
| 277 | fmtp = p2;
|
---|
| 278 |
|
---|
| 279 | /* only one conversion character if byte count */
|
---|
| 280 | if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
|
---|
| 281 | bb_error_msg_and_die("byte count with multiple conversion characters");
|
---|
| 282 | }
|
---|
| 283 | }
|
---|
| 284 | /*
|
---|
| 285 | * if format unit byte count not specified, figure it out
|
---|
| 286 | * so can adjust rep count later.
|
---|
| 287 | */
|
---|
| 288 | if (!fu->bcnt)
|
---|
| 289 | for (pr = fu->nextpr; pr; pr = pr->nextpr)
|
---|
| 290 | fu->bcnt += pr->bcnt;
|
---|
| 291 | }
|
---|
| 292 | /*
|
---|
| 293 | * if the format string interprets any data at all, and it's
|
---|
| 294 | * not the same as the blocksize, and its last format unit
|
---|
| 295 | * interprets any data at all, and has no iteration count,
|
---|
| 296 | * repeat it as necessary.
|
---|
| 297 | *
|
---|
| 298 | * if, rep count is greater than 1, no trailing whitespace
|
---|
| 299 | * gets output from the last iteration of the format unit.
|
---|
| 300 | */
|
---|
| 301 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
| 302 | if (!fu->nextfu && fs->bcnt < dumper->blocksize
|
---|
| 303 | && !(fu->flags & F_SETREP) && fu->bcnt
|
---|
| 304 | ) {
|
---|
| 305 | fu->reps += (dumper->blocksize - fs->bcnt) / fu->bcnt;
|
---|
| 306 | }
|
---|
| 307 | if (fu->reps > 1) {
|
---|
| 308 | for (pr = fu->nextpr;; pr = pr->nextpr)
|
---|
| 309 | if (!pr->nextpr)
|
---|
| 310 | break;
|
---|
| 311 | for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
|
---|
| 312 | p2 = isspace(*p1) ? p1 : NULL;
|
---|
| 313 | if (p2)
|
---|
| 314 | pr->nospace = p2;
|
---|
| 315 | }
|
---|
| 316 | if (!fu->nextfu)
|
---|
| 317 | break;
|
---|
| 318 | }
|
---|
| 319 | }
|
---|
| 320 |
|
---|
| 321 | static void do_skip(priv_dumper_t *dumper, const char *fname, int statok)
|
---|
| 322 | {
|
---|
| 323 | struct stat sbuf;
|
---|
| 324 |
|
---|
| 325 | if (statok) {
|
---|
| 326 | xfstat(STDIN_FILENO, &sbuf, fname);
|
---|
| 327 | if (!(S_ISCHR(sbuf.st_mode) || S_ISBLK(sbuf.st_mode) || S_ISFIFO(sbuf.st_mode))
|
---|
| 328 | && dumper->pub.dump_skip >= sbuf.st_size
|
---|
| 329 | ) {
|
---|
| 330 | /* If bb_dump_size valid and pub.dump_skip >= size */
|
---|
| 331 | dumper->pub.dump_skip -= sbuf.st_size;
|
---|
| 332 | dumper->address += sbuf.st_size;
|
---|
| 333 | return;
|
---|
| 334 | }
|
---|
| 335 | }
|
---|
| 336 | if (fseek(stdin, dumper->pub.dump_skip, SEEK_SET)) {
|
---|
| 337 | bb_simple_perror_msg_and_die(fname);
|
---|
| 338 | }
|
---|
| 339 | dumper->address += dumper->pub.dump_skip;
|
---|
| 340 | dumper->savaddress = dumper->address;
|
---|
| 341 | dumper->pub.dump_skip = 0;
|
---|
| 342 | }
|
---|
| 343 |
|
---|
| 344 | static NOINLINE int next(priv_dumper_t *dumper)
|
---|
| 345 | {
|
---|
| 346 | int statok;
|
---|
| 347 |
|
---|
| 348 | for (;;) {
|
---|
| 349 | if (*dumper->argv) {
|
---|
| 350 | dumper->next__done = statok = 1;
|
---|
| 351 | if (!(freopen(*dumper->argv, "r", stdin))) {
|
---|
| 352 | bb_simple_perror_msg(*dumper->argv);
|
---|
| 353 | dumper->exitval = 1;
|
---|
| 354 | ++dumper->argv;
|
---|
| 355 | continue;
|
---|
| 356 | }
|
---|
| 357 | } else {
|
---|
| 358 | if (dumper->next__done)
|
---|
| 359 | return 0; /* no next file */
|
---|
| 360 | dumper->next__done = 1;
|
---|
| 361 | statok = 0;
|
---|
| 362 | }
|
---|
| 363 | if (dumper->pub.dump_skip)
|
---|
| 364 | do_skip(dumper, statok ? *dumper->argv : "stdin", statok);
|
---|
| 365 | if (*dumper->argv)
|
---|
| 366 | ++dumper->argv;
|
---|
| 367 | if (!dumper->pub.dump_skip)
|
---|
| 368 | return 1;
|
---|
| 369 | }
|
---|
| 370 | /* NOTREACHED */
|
---|
| 371 | }
|
---|
| 372 |
|
---|
| 373 | static unsigned char *get(priv_dumper_t *dumper)
|
---|
| 374 | {
|
---|
| 375 | int n;
|
---|
| 376 | int need, nread;
|
---|
| 377 | int blocksize = dumper->blocksize;
|
---|
| 378 |
|
---|
| 379 | if (!dumper->get__curp) {
|
---|
| 380 | dumper->address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
|
---|
| 381 | dumper->get__curp = xmalloc(blocksize);
|
---|
| 382 | dumper->get__savp = xzalloc(blocksize); /* need to be initialized */
|
---|
| 383 | } else {
|
---|
| 384 | unsigned char *tmp = dumper->get__curp;
|
---|
| 385 | dumper->get__curp = dumper->get__savp;
|
---|
| 386 | dumper->get__savp = tmp;
|
---|
| 387 | dumper->savaddress += blocksize;
|
---|
| 388 | dumper->address = dumper->savaddress;
|
---|
| 389 | }
|
---|
| 390 | need = blocksize;
|
---|
| 391 | nread = 0;
|
---|
| 392 | while (1) {
|
---|
| 393 | /*
|
---|
| 394 | * if read the right number of bytes, or at EOF for one file,
|
---|
| 395 | * and no other files are available, zero-pad the rest of the
|
---|
| 396 | * block and set the end flag.
|
---|
| 397 | */
|
---|
| 398 | if (!dumper->pub.dump_length || (dumper->get__ateof && !next(dumper))) {
|
---|
| 399 | if (need == blocksize) {
|
---|
| 400 | return NULL;
|
---|
| 401 | }
|
---|
| 402 | if (dumper->pub.dump_vflag != ALL && !memcmp(dumper->get__curp, dumper->get__savp, nread)) {
|
---|
| 403 | if (dumper->pub.dump_vflag != DUP) {
|
---|
| 404 | puts("*");
|
---|
| 405 | }
|
---|
| 406 | return NULL;
|
---|
| 407 | }
|
---|
| 408 | memset(dumper->get__curp + nread, 0, need);
|
---|
| 409 | dumper->eaddress = dumper->address + nread;
|
---|
| 410 | return dumper->get__curp;
|
---|
| 411 | }
|
---|
| 412 | n = fread(dumper->get__curp + nread, sizeof(unsigned char),
|
---|
| 413 | dumper->pub.dump_length == -1 ? need : MIN(dumper->pub.dump_length, need), stdin);
|
---|
| 414 | if (!n) {
|
---|
| 415 | if (ferror(stdin)) {
|
---|
| 416 | bb_simple_perror_msg(dumper->argv[-1]);
|
---|
| 417 | }
|
---|
| 418 | dumper->get__ateof = 1;
|
---|
| 419 | continue;
|
---|
| 420 | }
|
---|
| 421 | dumper->get__ateof = 0;
|
---|
| 422 | if (dumper->pub.dump_length != -1) {
|
---|
| 423 | dumper->pub.dump_length -= n;
|
---|
| 424 | }
|
---|
| 425 | need -= n;
|
---|
| 426 | if (!need) {
|
---|
| 427 | if (dumper->pub.dump_vflag == ALL || dumper->pub.dump_vflag == FIRST
|
---|
| 428 | || memcmp(dumper->get__curp, dumper->get__savp, blocksize)
|
---|
| 429 | ) {
|
---|
| 430 | if (dumper->pub.dump_vflag == DUP || dumper->pub.dump_vflag == FIRST) {
|
---|
| 431 | dumper->pub.dump_vflag = WAIT;
|
---|
| 432 | }
|
---|
| 433 | return dumper->get__curp;
|
---|
| 434 | }
|
---|
| 435 | if (dumper->pub.dump_vflag == WAIT) {
|
---|
| 436 | puts("*");
|
---|
| 437 | }
|
---|
| 438 | dumper->pub.dump_vflag = DUP;
|
---|
| 439 | dumper->savaddress += blocksize;
|
---|
| 440 | dumper->address = dumper->savaddress;
|
---|
| 441 | need = blocksize;
|
---|
| 442 | nread = 0;
|
---|
| 443 | } else {
|
---|
| 444 | nread += n;
|
---|
| 445 | }
|
---|
| 446 | }
|
---|
| 447 | }
|
---|
| 448 |
|
---|
| 449 | static void bpad(PR *pr)
|
---|
| 450 | {
|
---|
| 451 | char *p1, *p2;
|
---|
| 452 |
|
---|
| 453 | /*
|
---|
| 454 | * remove all conversion flags; '-' is the only one valid
|
---|
| 455 | * with %s, and it's not useful here.
|
---|
| 456 | */
|
---|
| 457 | pr->flags = F_BPAD;
|
---|
| 458 | *pr->cchar = 's';
|
---|
| 459 | for (p1 = pr->fmt; *p1 != '%'; ++p1)
|
---|
| 460 | continue;
|
---|
| 461 | for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1)
|
---|
| 462 | if (pr->nospace)
|
---|
| 463 | pr->nospace--;
|
---|
| 464 | while ((*p2++ = *p1++) != 0)
|
---|
| 465 | continue;
|
---|
| 466 | }
|
---|
| 467 |
|
---|
| 468 | static const char conv_str[] ALIGN1 =
|
---|
| 469 | "\0\\0\0"
|
---|
| 470 | "\007\\a\0" /* \a */
|
---|
| 471 | "\b\\b\0"
|
---|
| 472 | "\f\\b\0"
|
---|
| 473 | "\n\\n\0"
|
---|
| 474 | "\r\\r\0"
|
---|
| 475 | "\t\\t\0"
|
---|
| 476 | "\v\\v\0"
|
---|
| 477 | ;
|
---|
| 478 |
|
---|
| 479 |
|
---|
| 480 | static void conv_c(PR *pr, unsigned char *p)
|
---|
| 481 | {
|
---|
| 482 | const char *str = conv_str;
|
---|
| 483 | char buf[10];
|
---|
| 484 |
|
---|
| 485 | do {
|
---|
| 486 | if (*p == *str) {
|
---|
| 487 | ++str;
|
---|
| 488 | goto strpr;
|
---|
| 489 | }
|
---|
| 490 | str += 4;
|
---|
| 491 | } while (*str);
|
---|
| 492 |
|
---|
| 493 | if (isprint_asciionly(*p)) {
|
---|
| 494 | *pr->cchar = 'c';
|
---|
| 495 | printf(pr->fmt, *p);
|
---|
| 496 | } else {
|
---|
| 497 | sprintf(buf, "%03o", (int) *p);
|
---|
| 498 | str = buf;
|
---|
| 499 | strpr:
|
---|
| 500 | *pr->cchar = 's';
|
---|
| 501 | printf(pr->fmt, str);
|
---|
| 502 | }
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | static void conv_u(PR *pr, unsigned char *p)
|
---|
| 506 | {
|
---|
| 507 | static const char list[] ALIGN1 =
|
---|
| 508 | "nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
|
---|
| 509 | "bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
|
---|
| 510 | "dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
|
---|
| 511 | "can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
|
---|
| 512 |
|
---|
| 513 | /* od used nl, not lf */
|
---|
| 514 | if (*p <= 0x1f) {
|
---|
| 515 | *pr->cchar = 's';
|
---|
| 516 | printf(pr->fmt, list + (4 * (int)*p));
|
---|
| 517 | } else if (*p == 0x7f) {
|
---|
| 518 | *pr->cchar = 's';
|
---|
| 519 | printf(pr->fmt, "del");
|
---|
| 520 | } else if (*p < 0x7f) { /* isprint() */
|
---|
| 521 | *pr->cchar = 'c';
|
---|
| 522 | printf(pr->fmt, *p);
|
---|
| 523 | } else {
|
---|
| 524 | *pr->cchar = 'x';
|
---|
| 525 | printf(pr->fmt, (int) *p);
|
---|
| 526 | }
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | static void display(priv_dumper_t* dumper)
|
---|
| 530 | {
|
---|
| 531 | FS *fs;
|
---|
| 532 | FU *fu;
|
---|
| 533 | PR *pr;
|
---|
| 534 | int cnt;
|
---|
| 535 | unsigned char *bp, *savebp;
|
---|
| 536 | off_t saveaddress;
|
---|
| 537 | unsigned char savech = '\0';
|
---|
| 538 |
|
---|
| 539 | while ((bp = get(dumper)) != NULL) {
|
---|
| 540 | fs = dumper->pub.fshead;
|
---|
| 541 | savebp = bp;
|
---|
| 542 | saveaddress = dumper->address;
|
---|
| 543 | for (; fs; fs = fs->nextfs, bp = savebp, dumper->address = saveaddress) {
|
---|
| 544 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
| 545 | if (fu->flags & F_IGNORE) {
|
---|
| 546 | break;
|
---|
| 547 | }
|
---|
| 548 | for (cnt = fu->reps; cnt; --cnt) {
|
---|
| 549 | for (pr = fu->nextpr; pr; dumper->address += pr->bcnt,
|
---|
| 550 | bp += pr->bcnt, pr = pr->nextpr) {
|
---|
| 551 | if (dumper->eaddress && dumper->address >= dumper->eaddress
|
---|
| 552 | && !(pr->flags & (F_TEXT | F_BPAD))
|
---|
| 553 | ) {
|
---|
| 554 | bpad(pr);
|
---|
| 555 | }
|
---|
| 556 | if (cnt == 1 && pr->nospace) {
|
---|
| 557 | savech = *pr->nospace;
|
---|
| 558 | *pr->nospace = '\0';
|
---|
| 559 | }
|
---|
| 560 | /* PRINT; */
|
---|
| 561 | switch (pr->flags) {
|
---|
| 562 | case F_ADDRESS:
|
---|
| 563 | printf(pr->fmt, (unsigned) dumper->address);
|
---|
| 564 | break;
|
---|
| 565 | case F_BPAD:
|
---|
| 566 | printf(pr->fmt, "");
|
---|
| 567 | break;
|
---|
| 568 | case F_C:
|
---|
| 569 | conv_c(pr, bp);
|
---|
| 570 | break;
|
---|
| 571 | case F_CHAR:
|
---|
| 572 | printf(pr->fmt, *bp);
|
---|
| 573 | break;
|
---|
| 574 | case F_DBL: {
|
---|
| 575 | double dval;
|
---|
| 576 | float fval;
|
---|
| 577 |
|
---|
| 578 | switch (pr->bcnt) {
|
---|
| 579 | case 4:
|
---|
| 580 | memcpy(&fval, bp, sizeof(fval));
|
---|
| 581 | printf(pr->fmt, fval);
|
---|
| 582 | break;
|
---|
| 583 | case 8:
|
---|
| 584 | memcpy(&dval, bp, sizeof(dval));
|
---|
| 585 | printf(pr->fmt, dval);
|
---|
| 586 | break;
|
---|
| 587 | }
|
---|
| 588 | break;
|
---|
| 589 | }
|
---|
| 590 | case F_INT: {
|
---|
| 591 | int ival;
|
---|
| 592 | short sval;
|
---|
| 593 |
|
---|
| 594 | switch (pr->bcnt) {
|
---|
| 595 | case 1:
|
---|
| 596 | printf(pr->fmt, (int) *bp);
|
---|
| 597 | break;
|
---|
| 598 | case 2:
|
---|
| 599 | memcpy(&sval, bp, sizeof(sval));
|
---|
| 600 | printf(pr->fmt, (int) sval);
|
---|
| 601 | break;
|
---|
| 602 | case 4:
|
---|
| 603 | memcpy(&ival, bp, sizeof(ival));
|
---|
| 604 | printf(pr->fmt, ival);
|
---|
| 605 | break;
|
---|
| 606 | }
|
---|
| 607 | break;
|
---|
| 608 | }
|
---|
| 609 | case F_P:
|
---|
| 610 | printf(pr->fmt, isprint_asciionly(*bp) ? *bp : '.');
|
---|
| 611 | break;
|
---|
| 612 | case F_STR:
|
---|
| 613 | printf(pr->fmt, (char *) bp);
|
---|
| 614 | break;
|
---|
| 615 | case F_TEXT:
|
---|
| 616 | printf(pr->fmt);
|
---|
| 617 | break;
|
---|
| 618 | case F_U:
|
---|
| 619 | conv_u(pr, bp);
|
---|
| 620 | break;
|
---|
| 621 | case F_UINT: {
|
---|
| 622 | unsigned ival;
|
---|
| 623 | unsigned short sval;
|
---|
| 624 |
|
---|
| 625 | switch (pr->bcnt) {
|
---|
| 626 | case 1:
|
---|
| 627 | printf(pr->fmt, (unsigned) *bp);
|
---|
| 628 | break;
|
---|
| 629 | case 2:
|
---|
| 630 | memcpy(&sval, bp, sizeof(sval));
|
---|
| 631 | printf(pr->fmt, (unsigned) sval);
|
---|
| 632 | break;
|
---|
| 633 | case 4:
|
---|
| 634 | memcpy(&ival, bp, sizeof(ival));
|
---|
| 635 | printf(pr->fmt, ival);
|
---|
| 636 | break;
|
---|
| 637 | }
|
---|
| 638 | break;
|
---|
| 639 | }
|
---|
| 640 | }
|
---|
| 641 | if (cnt == 1 && pr->nospace) {
|
---|
| 642 | *pr->nospace = savech;
|
---|
| 643 | }
|
---|
| 644 | }
|
---|
| 645 | }
|
---|
| 646 | }
|
---|
| 647 | }
|
---|
| 648 | }
|
---|
| 649 | if (dumper->endfu) {
|
---|
| 650 | /*
|
---|
| 651 | * if eaddress not set, error or file size was multiple
|
---|
| 652 | * of blocksize, and no partial block ever found.
|
---|
| 653 | */
|
---|
| 654 | if (!dumper->eaddress) {
|
---|
| 655 | if (!dumper->address) {
|
---|
| 656 | return;
|
---|
| 657 | }
|
---|
| 658 | dumper->eaddress = dumper->address;
|
---|
| 659 | }
|
---|
| 660 | for (pr = dumper->endfu->nextpr; pr; pr = pr->nextpr) {
|
---|
| 661 | switch (pr->flags) {
|
---|
| 662 | case F_ADDRESS:
|
---|
| 663 | printf(pr->fmt, (unsigned) dumper->eaddress);
|
---|
| 664 | break;
|
---|
| 665 | case F_TEXT:
|
---|
| 666 | printf(pr->fmt);
|
---|
| 667 | break;
|
---|
| 668 | }
|
---|
| 669 | }
|
---|
| 670 | }
|
---|
| 671 | }
|
---|
| 672 |
|
---|
| 673 | #define dumper ((priv_dumper_t*)pub_dumper)
|
---|
| 674 | int FAST_FUNC bb_dump_dump(dumper_t *pub_dumper, char **argv)
|
---|
| 675 | {
|
---|
| 676 | FS *tfs;
|
---|
| 677 | int blocksize;
|
---|
| 678 |
|
---|
| 679 | /* figure out the data block bb_dump_size */
|
---|
| 680 | blocksize = 0;
|
---|
| 681 | tfs = dumper->pub.fshead;
|
---|
| 682 | while (tfs) {
|
---|
| 683 | tfs->bcnt = bb_dump_size(tfs);
|
---|
| 684 | if (blocksize < tfs->bcnt) {
|
---|
| 685 | blocksize = tfs->bcnt;
|
---|
| 686 | }
|
---|
| 687 | tfs = tfs->nextfs;
|
---|
| 688 | }
|
---|
| 689 | dumper->blocksize = blocksize;
|
---|
| 690 |
|
---|
| 691 | /* rewrite the rules, do syntax checking */
|
---|
| 692 | for (tfs = dumper->pub.fshead; tfs; tfs = tfs->nextfs) {
|
---|
| 693 | rewrite(dumper, tfs);
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 | dumper->argv = argv;
|
---|
| 697 | display(dumper);
|
---|
| 698 |
|
---|
| 699 | return dumper->exitval;
|
---|
| 700 | }
|
---|
| 701 |
|
---|
| 702 | void FAST_FUNC bb_dump_add(dumper_t* pub_dumper, const char *fmt)
|
---|
| 703 | {
|
---|
| 704 | const char *p;
|
---|
| 705 | char *p1;
|
---|
| 706 | char *p2;
|
---|
| 707 | FS *tfs;
|
---|
| 708 | FU *tfu, **nextfupp;
|
---|
| 709 | const char *savep;
|
---|
| 710 |
|
---|
| 711 | /* start new linked list of format units */
|
---|
| 712 | tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
|
---|
| 713 | if (!dumper->pub.fshead) {
|
---|
| 714 | dumper->pub.fshead = tfs;
|
---|
| 715 | } else {
|
---|
| 716 | FS *fslast = dumper->pub.fshead;
|
---|
| 717 | while (fslast->nextfs)
|
---|
| 718 | fslast = fslast->nextfs;
|
---|
| 719 | fslast->nextfs = tfs;
|
---|
| 720 | }
|
---|
| 721 | nextfupp = &tfs->nextfu;
|
---|
| 722 |
|
---|
| 723 | /* take the format string and break it up into format units */
|
---|
| 724 | p = fmt;
|
---|
| 725 | for (;;) {
|
---|
| 726 | p = skip_whitespace(p);
|
---|
| 727 | if (!*p) {
|
---|
| 728 | break;
|
---|
| 729 | }
|
---|
| 730 |
|
---|
| 731 | /* allocate a new format unit and link it in */
|
---|
| 732 | /* NOSTRICT */
|
---|
| 733 | /* DBU:[dave@cray.com] zalloc so that forward pointers start out NULL */
|
---|
| 734 | tfu = xzalloc(sizeof(FU));
|
---|
| 735 | *nextfupp = tfu;
|
---|
| 736 | nextfupp = &tfu->nextfu;
|
---|
| 737 | tfu->reps = 1;
|
---|
| 738 |
|
---|
| 739 | /* if leading digit, repetition count */
|
---|
| 740 | if (isdigit(*p)) {
|
---|
| 741 | for (savep = p; isdigit(*p); ++p)
|
---|
| 742 | continue;
|
---|
| 743 | if (!isspace(*p) && *p != '/') {
|
---|
| 744 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 745 | }
|
---|
| 746 | /* may overwrite either white space or slash */
|
---|
| 747 | tfu->reps = atoi(savep);
|
---|
| 748 | tfu->flags = F_SETREP;
|
---|
| 749 | /* skip trailing white space */
|
---|
| 750 | p = skip_whitespace(++p);
|
---|
| 751 | }
|
---|
| 752 |
|
---|
| 753 | /* skip slash and trailing white space */
|
---|
| 754 | if (*p == '/') {
|
---|
| 755 | p = skip_whitespace(++p);
|
---|
| 756 | }
|
---|
| 757 |
|
---|
| 758 | /* byte count */
|
---|
| 759 | if (isdigit(*p)) {
|
---|
| 760 | // TODO: use bb_strtou
|
---|
| 761 | savep = p;
|
---|
| 762 | while (isdigit(*++p))
|
---|
| 763 | continue;
|
---|
| 764 | if (!isspace(*p)) {
|
---|
| 765 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 766 | }
|
---|
| 767 | tfu->bcnt = atoi(savep);
|
---|
| 768 | /* skip trailing white space */
|
---|
| 769 | p = skip_whitespace(++p);
|
---|
| 770 | }
|
---|
| 771 |
|
---|
| 772 | /* format */
|
---|
| 773 | if (*p != '"') {
|
---|
| 774 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 775 | }
|
---|
| 776 | for (savep = ++p; *p != '"';) {
|
---|
| 777 | if (*p++ == 0) {
|
---|
| 778 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 779 | }
|
---|
| 780 | }
|
---|
| 781 | tfu->fmt = xstrndup(savep, p - savep);
|
---|
| 782 | /* escape(tfu->fmt); */
|
---|
| 783 |
|
---|
| 784 | p1 = tfu->fmt;
|
---|
| 785 |
|
---|
| 786 | /* alphabetic escape sequences have to be done in place */
|
---|
| 787 | for (p2 = p1;; ++p1, ++p2) {
|
---|
| 788 | if (!*p1) {
|
---|
| 789 | *p2 = *p1;
|
---|
| 790 | break;
|
---|
| 791 | }
|
---|
| 792 | if (*p1 == '\\') {
|
---|
| 793 | const char *cs = conv_str + 4;
|
---|
| 794 | ++p1;
|
---|
| 795 | *p2 = *p1;
|
---|
| 796 | do {
|
---|
| 797 | if (*p1 == cs[2]) {
|
---|
| 798 | *p2 = cs[0];
|
---|
| 799 | break;
|
---|
| 800 | }
|
---|
| 801 | cs += 4;
|
---|
| 802 | } while (*cs);
|
---|
| 803 | }
|
---|
| 804 | }
|
---|
| 805 |
|
---|
| 806 | p++;
|
---|
| 807 | }
|
---|
| 808 | }
|
---|
| 809 |
|
---|
| 810 | /*
|
---|
| 811 | * Copyright (c) 1989 The Regents of the University of California.
|
---|
| 812 | * All rights reserved.
|
---|
| 813 | *
|
---|
| 814 | * Redistribution and use in source and binary forms, with or without
|
---|
| 815 | * modification, are permitted provided that the following conditions
|
---|
| 816 | * are met:
|
---|
| 817 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 818 | * notice, this list of conditions and the following disclaimer.
|
---|
| 819 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 820 | * notice, this list of conditions and the following disclaimer in the
|
---|
| 821 | * documentation and/or other materials provided with the distribution.
|
---|
| 822 | * 3. Neither the name of the University nor the names of its contributors
|
---|
| 823 | * may be used to endorse or promote products derived from this software
|
---|
| 824 | * without specific prior written permission.
|
---|
| 825 | *
|
---|
| 826 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
| 827 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
| 828 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
| 829 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
| 830 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
| 831 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
| 832 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
| 833 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
| 834 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
| 835 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
| 836 | * SUCH DAMAGE.
|
---|
| 837 | */
|
---|