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4732 /usr/bin/file should provide -b option for compatiblity with GNU/BSD file
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--- old/usr/src/cmd/file/file.c
+++ new/usr/src/cmd/file/file.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
22 22 /* All Rights Reserved */
23 23
24 24
25 25 /* Copyright (c) 1987, 1988 Microsoft Corporation */
26 26 /* All Rights Reserved */
27 27
28 28 /*
29 29 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
30 30 * Use is subject to license terms.
31 31 */
32 32
33 33 #define _LARGEFILE64_SOURCE
34 34
35 35 /* Get definitions for the relocation types supported. */
36 36 #define ELF_TARGET_ALL
37 37
38 38 #include <ctype.h>
39 39 #include <unistd.h>
40 40 #include <fcntl.h>
41 41 #include <signal.h>
42 42 #include <stdio.h>
43 43 #include <libelf.h>
44 44 #include <stdlib.h>
45 45 #include <limits.h>
46 46 #include <locale.h>
47 47 #include <wctype.h>
48 48 #include <string.h>
49 49 #include <errno.h>
50 50 #include <door.h>
51 51 #include <sys/param.h>
52 52 #include <sys/types.h>
53 53 #include <sys/mkdev.h>
54 54 #include <sys/stat.h>
55 55 #include <sys/elf.h>
56 56 #include <procfs.h>
57 57 #include <sys/core.h>
58 58 #include <sys/dumphdr.h>
59 59 #include <netinet/in.h>
60 60 #include <gelf.h>
61 61 #include <elfcap.h>
62 62 #include <sgsrtcid.h>
63 63 #include "file.h"
64 64 #include "elf_read.h"
65 65
66 66 /*
67 67 * Misc
68 68 */
69 69
70 70 #define FBSZ 512
71 71 #define MLIST_SZ 12
72 72
73 73 /*
74 74 * The 0x8FCA0102 magic string was used in crash dumps generated by releases
75 75 * prior to Solaris 7.
76 76 */
77 77 #define OLD_DUMP_MAGIC 0x8FCA0102
78 78
79 79 #if defined(__sparc)
80 80 #define NATIVE_ISA "SPARC"
81 81 #define OTHER_ISA "Intel"
82 82 #else
83 83 #define NATIVE_ISA "Intel"
84 84 #define OTHER_ISA "SPARC"
85 85 #endif
86 86
87 87 /* Assembly language comment char */
88 88 #ifdef pdp11
89 89 #define ASCOMCHAR '/'
90 90 #else
91 91 #define ASCOMCHAR '!'
92 92 #endif
93 93
94 94 #pragma align 16(fbuf)
95 95 static char fbuf[FBSZ];
96 96
97 97 /*
98 98 * Magic file variables
99 99 */
100 100 static intmax_t maxmagicoffset;
101 101 static intmax_t tmpmax;
102 102 static char *magicbuf;
103 103
104 104 static char *dfile;
105 105 static char *troff[] = { /* new troff intermediate lang */
106 106 "x", "T", "res", "init", "font", "202", "V0", "p1", 0};
107 107
108 108 static char *fort[] = { /* FORTRAN */
109 109 "function", "subroutine", "common", "dimension", "block",
110 110 "integer", "real", "data", "double",
111 111 "FUNCTION", "SUBROUTINE", "COMMON", "DIMENSION", "BLOCK",
112 112 "INTEGER", "REAL", "DATA", "DOUBLE", 0};
113 113
114 114 static char *asc[] = { /* Assembler Commands */
115 115 "sys", "mov", "tst", "clr", "jmp", "cmp", "set", "inc",
116 116 "dec", 0};
117 117
118 118 static char *c[] = { /* C Language */
119 119 "int", "char", "float", "double", "short", "long", "unsigned",
120 120 "register", "static", "struct", "extern", 0};
121 121
122 122 static char *as[] = { /* Assembler Pseudo Ops, prepended with '.' */
123 123 "globl", "global", "ident", "file", "byte", "even",
124 124 "text", "data", "bss", "comm", 0};
125 125
126 126 /*
127 127 * The line and debug section names are used by the strip command.
128 128 * Any changes in the strip implementation need to be reflected here.
129 129 */
130 130 static char *debug_sections[] = { /* Debug sections in a ELF file */
131 131 ".debug", ".stab", ".dwarf", ".line", NULL};
132 132
133 133 /* start for MB env */
134 134 static wchar_t wchar;
135 135 static int length;
136 136 static int IS_ascii;
137 137 static int Max;
138 138 /* end for MB env */
139 139 static int i; /* global index into first 'fbsz' bytes of file */
140 140 static int fbsz;
141 141 static int ifd = -1;
142 142 static int elffd = -1;
143 143 static int tret;
144 144 static int hflg;
145 145 static int dflg;
146 146 static int mflg;
147 147 static int M_flg;
148 148 static int iflg;
149 149 static struct stat64 mbuf;
150 150
151 151 static char **mlist1; /* 1st ordered list of magic files */
152 152 static char **mlist2; /* 2nd ordered list of magic files */
153 153 static size_t mlist1_sz; /* number of ptrs allocated for mlist1 */
154 154 static size_t mlist2_sz; /* number of ptrs allocated for mlist2 */
155 155 static char **mlist1p; /* next entry in mlist1 */
156 156 static char **mlist2p; /* next entry in mlist2 */
157 157
158 158 static ssize_t mread;
159 159
160 160 static void ar_coff_or_aout(int ifd);
161 161 static int type(char *file);
162 162 static int def_position_tests(char *file);
163 163 static void def_context_tests(void);
164 164 static int troffint(char *bp, int n);
165 165 static int lookup(char **tab);
166 166 static int ccom(void);
167 167 static int ascom(void);
168 168 static int sccs(void);
169 169 static int english(char *bp, int n);
170 170 static int shellscript(char buf[], struct stat64 *sb);
171 171 static int elf_check(char *file);
172 172 static int get_door_target(char *, char *, size_t);
173 173 static int zipfile(char *, int);
174 174 static int is_crash_dump(const char *, int);
175 175 static void print_dumphdr(const int, const dumphdr_t *, uint32_t (*)(uint32_t),
176 176 const char *);
177 177 static uint32_t swap_uint32(uint32_t);
178 178 static uint32_t return_uint32(uint32_t);
179 179 static void usage(void);
180 180 static void default_magic(void);
181 181 static void add_to_mlist(char *, int);
182 182 static void fd_cleanup(void);
183 183 static int is_rtld_config(void);
184 184
185 185 /* from elf_read.c */
186 186 int elf_read32(int elffd, Elf_Info *EInfo);
187 187 int elf_read64(int elffd, Elf_Info *EInfo);
188 188
189 189 #ifdef XPG4
190 190 /* SUSv3 requires a single <space> after the colon */
191 191 #define prf(x) (void) printf("%s: ", x);
192 192 #else /* !XPG4 */
193 193 #define prf(x) (void) printf("%s:%s", x, (int)strlen(x) > 6 ? "\t" : "\t\t");
194 194 #endif /* XPG4 */
195 195
196 196 /*
197 197 * Static program identifier - used to prevent localization of the name "file"
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198 198 * within individual error messages.
199 199 */
200 200 const char *File = "file";
201 201
202 202 int
203 203 main(int argc, char **argv)
204 204 {
205 205 char *p;
206 206 int ch;
207 207 FILE *fl;
208 + int bflg = 0;
208 209 int cflg = 0;
209 210 int eflg = 0;
210 211 int fflg = 0;
211 212 char *ap = NULL;
212 213 int pathlen;
213 214 char **filep;
214 215
215 216 (void) setlocale(LC_ALL, "");
216 217 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
217 218 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
218 219 #endif
219 220 (void) textdomain(TEXT_DOMAIN);
220 221
221 - while ((ch = getopt(argc, argv, "M:cdf:him:")) != EOF) {
222 + while ((ch = getopt(argc, argv, "M:bcdf:him:")) != EOF) {
222 223 switch (ch) {
223 224
224 225 case 'M':
225 226 add_to_mlist(optarg, !dflg);
226 227 M_flg++;
227 228 break;
228 229
230 + case 'b':
231 + bflg++;
232 + break;
233 +
229 234 case 'c':
230 235 cflg++;
231 236 break;
232 237
233 238 case 'd':
234 239 if (!dflg) {
235 240 default_magic();
236 241 add_to_mlist(dfile, 0);
237 242 dflg++;
238 243 }
239 244 break;
240 245
241 246 case 'f':
242 247 fflg++;
243 248 errno = 0;
244 249 if ((fl = fopen(optarg, "r")) == NULL) {
245 250 int err = errno;
246 251 (void) fprintf(stderr, gettext("%s: cannot "
247 252 "open file %s: %s\n"), File, optarg,
248 253 err ? strerror(err) : "");
249 254 usage();
250 255 }
251 256 pathlen = pathconf("/", _PC_PATH_MAX);
252 257 if (pathlen == -1) {
253 258 int err = errno;
254 259 (void) fprintf(stderr, gettext("%s: cannot "
255 260 "determine maximum path length: %s\n"),
256 261 File, strerror(err));
257 262 exit(1);
258 263 }
259 264 pathlen += 2; /* for null and newline in fgets */
260 265 if ((ap = malloc(pathlen * sizeof (char))) == NULL) {
261 266 int err = errno;
262 267 (void) fprintf(stderr, gettext("%s: malloc "
263 268 "failed: %s\n"), File, strerror(err));
264 269 exit(2);
265 270 }
266 271 break;
267 272
268 273 case 'h':
269 274 hflg++;
270 275 break;
271 276
272 277 case 'i':
273 278 iflg++;
274 279 break;
275 280
276 281 case 'm':
277 282 add_to_mlist(optarg, !dflg);
278 283 mflg++;
279 284 break;
280 285
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281 286 case '?':
282 287 eflg++;
283 288 break;
284 289 }
285 290 }
286 291 if (!cflg && !fflg && (eflg || optind == argc))
287 292 usage();
288 293 if (iflg && (dflg || mflg || M_flg)) {
289 294 usage();
290 295 }
291 - if (iflg && cflg) {
296 + if ((iflg && cflg) || (cflg && bflg)) {
292 297 usage();
293 298 }
294 299
295 300 if (!dflg && !mflg && !M_flg && !iflg) {
296 301 /* no -d, -m, nor -M option; also -i option doesn't need magic */
297 302 default_magic();
298 303 if (f_mkmtab(dfile, cflg, 0) == -1) {
299 304 exit(2);
300 305 }
301 306 }
302 307
303 308 else if (mflg && !M_flg && !dflg) {
304 309 /* -m specified without -d nor -M */
305 310
306 311 #ifdef XPG4 /* For SUSv3 only */
307 312
308 313 /*
309 314 * The default position-dependent magic file tests
310 315 * in /etc/magic will follow all the -m magic tests.
311 316 */
312 317
313 318 for (filep = mlist1; filep < mlist1p; filep++) {
314 319 if (f_mkmtab(*filep, cflg, 1) == -1) {
315 320 exit(2);
316 321 }
317 322 }
318 323 default_magic();
319 324 if (f_mkmtab(dfile, cflg, 0) == -1) {
320 325 exit(2);
321 326 }
322 327 #else /* !XPG4 */
323 328 /*
324 329 * Retain Solaris file behavior for -m before SUSv3,
325 330 * when the new -d and -M options are not specified.
326 331 * Use the -m file specified in place of the default
327 332 * /etc/magic file. Solaris file will
328 333 * now allow more than one magic file to be specified
329 334 * with multiple -m options, for consistency with
330 335 * other behavior.
331 336 *
332 337 * Put the magic table(s) specified by -m into
333 338 * the second magic table instead of the first
334 339 * (as indicated by the last argument to f_mkmtab()),
335 340 * since they replace the /etc/magic tests and
336 341 * must be executed alongside the default
337 342 * position-sensitive tests.
338 343 */
339 344
340 345 for (filep = mlist1; filep < mlist1p; filep++) {
341 346 if (f_mkmtab(*filep, cflg, 0) == -1) {
342 347 exit(2);
343 348 }
344 349 }
345 350 #endif /* XPG4 */
346 351 } else {
347 352 /*
348 353 * For any other combination of -d, -m, and -M,
349 354 * use the magic files in command-line order.
350 355 * Store the entries from the two separate lists of magic
351 356 * files, if any, into two separate magic file tables.
352 357 * mlist1: magic tests executed before default magic tests
353 358 * mlist2: default magic tests and after
354 359 */
355 360 for (filep = mlist1; filep && (filep < mlist1p); filep++) {
356 361 if (f_mkmtab(*filep, cflg, 1) == -1) {
357 362 exit(2);
358 363 }
359 364 }
360 365 for (filep = mlist2; filep && (filep < mlist2p); filep++) {
361 366 if (f_mkmtab(*filep, cflg, 0) == -1) {
362 367 exit(2);
363 368 }
364 369 }
365 370 }
366 371
367 372 /* Initialize the magic file variables; check both magic tables */
368 373 tmpmax = f_getmaxoffset(1);
369 374 maxmagicoffset = f_getmaxoffset(0);
370 375 if (maxmagicoffset < tmpmax) {
371 376 maxmagicoffset = tmpmax;
372 377 }
373 378 if (maxmagicoffset < (intmax_t)FBSZ)
374 379 maxmagicoffset = (intmax_t)FBSZ;
375 380 if ((magicbuf = malloc(maxmagicoffset)) == NULL) {
376 381 int err = errno;
377 382 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
378 383 File, strerror(err));
379 384 exit(2);
380 385 }
381 386
382 387 if (cflg) {
383 388 f_prtmtab();
384 389 if (ferror(stdout) != 0) {
385 390 (void) fprintf(stderr, gettext("%s: error writing to "
386 391 "stdout\n"), File);
387 392 exit(1);
388 393 }
389 394 if (fclose(stdout) != 0) {
390 395 int err = errno;
391 396 (void) fprintf(stderr, gettext("%s: fclose "
392 397 "failed: %s\n"), File, strerror(err));
393 398 exit(1);
394 399 }
395 400 exit(0);
396 401 }
397 402
398 403 for (; fflg || optind < argc; optind += !fflg) {
399 404 register int l;
400 405
401 406 if (fflg) {
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402 407 if ((p = fgets(ap, pathlen, fl)) == NULL) {
403 408 fflg = 0;
404 409 optind--;
405 410 continue;
406 411 }
407 412 l = strlen(p);
408 413 if (l > 0)
409 414 p[l - 1] = '\0';
410 415 } else
411 416 p = argv[optind];
412 - prf(p); /* print "file_name:<tab>" */
417 +
418 + if (!bflg)
419 + prf(p); /* print "file_name:<tab>" */
413 420
414 421 if (type(p))
415 422 tret = 1;
416 423 }
417 424 if (ap != NULL)
418 425 free(ap);
419 426 if (tret != 0)
420 427 exit(tret);
421 428
422 429 if (ferror(stdout) != 0) {
423 430 (void) fprintf(stderr, gettext("%s: error writing to "
424 431 "stdout\n"), File);
425 432 exit(1);
426 433 }
427 434 if (fclose(stdout) != 0) {
428 435 int err = errno;
429 436 (void) fprintf(stderr, gettext("%s: fclose failed: %s\n"),
430 437 File, strerror(err));
431 438 exit(1);
432 439 }
433 440 return (0);
434 441 }
435 442
436 443 static int
437 444 type(char *file)
438 445 {
439 446 int cc;
440 447 char buf[BUFSIZ];
441 448 int (*statf)() = hflg ? lstat64 : stat64;
442 449
443 450 i = 0; /* reset index to beginning of file */
444 451 ifd = -1;
445 452 if ((*statf)(file, &mbuf) < 0) {
446 453 if (statf == lstat64 || lstat64(file, &mbuf) < 0) {
447 454 int err = errno;
448 455 (void) printf(gettext("cannot open: %s\n"),
449 456 strerror(err));
450 457 return (0); /* POSIX.2 */
451 458 }
452 459 }
453 460 switch (mbuf.st_mode & S_IFMT) {
454 461 case S_IFREG:
455 462 if (iflg) {
456 463 (void) printf(gettext("regular file\n"));
457 464 return (0);
458 465 }
459 466 break;
460 467 case S_IFCHR:
461 468 (void) printf(gettext("character"));
462 469 goto spcl;
463 470
464 471 case S_IFDIR:
465 472 (void) printf(gettext("directory\n"));
466 473 return (0);
467 474
468 475 case S_IFIFO:
469 476 (void) printf(gettext("fifo\n"));
470 477 return (0);
471 478
472 479 case S_IFLNK:
473 480 if ((cc = readlink(file, buf, BUFSIZ)) < 0) {
474 481 int err = errno;
475 482 (void) printf(gettext("readlink error: %s\n"),
476 483 strerror(err));
477 484 return (1);
478 485 }
479 486 buf[cc] = '\0';
480 487 (void) printf(gettext("symbolic link to %s\n"), buf);
481 488 return (0);
482 489
483 490 case S_IFBLK:
484 491 (void) printf(gettext("block"));
485 492 /* major and minor, see sys/mkdev.h */
486 493 spcl:
487 494 (void) printf(gettext(" special (%d/%d)\n"),
488 495 major(mbuf.st_rdev), minor(mbuf.st_rdev));
489 496 return (0);
490 497
491 498 case S_IFSOCK:
492 499 (void) printf("socket\n");
493 500 /* FIXME, should open and try to getsockname. */
494 501 return (0);
495 502
496 503 case S_IFDOOR:
497 504 if (get_door_target(file, buf, sizeof (buf)) == 0)
498 505 (void) printf(gettext("door to %s\n"), buf);
499 506 else
500 507 (void) printf(gettext("door\n"));
501 508 return (0);
502 509
503 510 }
504 511
505 512 if (elf_version(EV_CURRENT) == EV_NONE) {
506 513 (void) printf(gettext("libelf is out of date\n"));
507 514 return (1);
508 515 }
509 516
510 517 ifd = open64(file, O_RDONLY);
511 518 if (ifd < 0) {
512 519 int err = errno;
513 520 (void) printf(gettext("cannot open: %s\n"), strerror(err));
514 521 return (0); /* POSIX.2 */
515 522 }
516 523
517 524 /* need another fd for elf, since we might want to read the file too */
518 525 elffd = open64(file, O_RDONLY);
519 526 if (elffd < 0) {
520 527 int err = errno;
521 528 (void) printf(gettext("cannot open: %s\n"), strerror(err));
522 529 (void) close(ifd);
523 530 ifd = -1;
524 531 return (0); /* POSIX.2 */
525 532 }
526 533 if ((fbsz = read(ifd, fbuf, FBSZ)) == -1) {
527 534 int err = errno;
528 535 (void) printf(gettext("cannot read: %s\n"), strerror(err));
529 536 (void) close(ifd);
530 537 ifd = -1;
531 538 return (0); /* POSIX.2 */
532 539 }
533 540 if (fbsz == 0) {
534 541 (void) printf(gettext("empty file\n"));
535 542 fd_cleanup();
536 543 return (0);
537 544 }
538 545
539 546 /*
540 547 * First try user-specified position-dependent magic tests, if any,
541 548 * which need to execute before the default tests.
542 549 */
543 550 if ((mread = pread(ifd, (void*)magicbuf, (size_t)maxmagicoffset,
544 551 (off_t)0)) == -1) {
545 552 int err = errno;
546 553 (void) printf(gettext("cannot read: %s\n"), strerror(err));
547 554 fd_cleanup();
548 555 return (0);
549 556 }
550 557
551 558 /*
552 559 * ChecK against Magic Table entries.
553 560 * Check first magic table for magic tests to be applied
554 561 * before default tests.
555 562 * If no default tests are to be applied, all magic tests
556 563 * should occur in this magic table.
557 564 */
558 565 switch (f_ckmtab(magicbuf, mread, 1)) {
559 566 case -1: /* Error */
560 567 exit(2);
561 568 break;
562 569 case 0: /* Not magic */
563 570 break;
564 571 default: /* Switch is magic index */
565 572 (void) putchar('\n');
566 573 fd_cleanup();
567 574 return (0);
568 575 /* NOTREACHED */
569 576 break;
570 577 }
571 578
572 579 if (dflg || !M_flg) {
573 580 /*
574 581 * default position-dependent tests,
575 582 * plus non-default magic tests, if any
576 583 */
577 584 switch (def_position_tests(file)) {
578 585 case -1: /* error */
579 586 fd_cleanup();
580 587 return (1);
581 588 case 1: /* matching type found */
582 589 fd_cleanup();
583 590 return (0);
584 591 /* NOTREACHED */
585 592 break;
586 593 case 0: /* no matching type found */
587 594 break;
588 595 }
589 596 /* default context-sensitive tests */
590 597 def_context_tests();
591 598 } else {
592 599 /* no more tests to apply; no match was found */
593 600 (void) printf(gettext("data\n"));
594 601 }
595 602 fd_cleanup();
596 603 return (0);
597 604 }
598 605
599 606 /*
600 607 * def_position_tests() - applies default position-sensitive tests,
601 608 * looking for values in specific positions in the file.
602 609 * These are followed by default (followed by possibly some
603 610 * non-default) magic file tests.
604 611 *
605 612 * All position-sensitive tests, default or otherwise, must
606 613 * be applied before context-sensitive tests, to avoid
607 614 * false context-sensitive matches.
608 615 *
609 616 * Returns -1 on error which should result in error (non-zero)
610 617 * exit status for the file utility.
611 618 * Returns 0 if no matching file type found.
612 619 * Returns 1 if matching file type found.
613 620 */
614 621
615 622 static int
616 623 def_position_tests(char *file)
617 624 {
618 625 if (sccs()) { /* look for "1hddddd" where d is a digit */
619 626 (void) printf("sccs \n");
620 627 return (1);
621 628 }
622 629 if (fbuf[0] == '#' && fbuf[1] == '!' && shellscript(fbuf+2, &mbuf))
623 630 return (1);
624 631
625 632 if (elf_check(file) == 0) {
626 633 (void) putchar('\n');
627 634 return (1);
628 635 /* LINTED: pointer cast may result in improper alignment */
629 636 } else if (*(int *)fbuf == CORE_MAGIC) {
630 637 /* LINTED: pointer cast may result in improper alignment */
631 638 struct core *corep = (struct core *)fbuf;
632 639
633 640 (void) printf("a.out core file");
634 641
635 642 if (*(corep->c_cmdname) != '\0')
636 643 (void) printf(" from '%s'", corep->c_cmdname);
637 644 (void) putchar('\n');
638 645 return (1);
639 646 }
640 647
641 648 /*
642 649 * Runtime linker (ld.so.1) configuration file.
643 650 */
644 651 if (is_rtld_config())
645 652 return (1);
646 653
647 654 /*
648 655 * ZIP files, JAR files, and Java executables
649 656 */
650 657 if (zipfile(fbuf, ifd))
651 658 return (1);
652 659
653 660 if (is_crash_dump(fbuf, ifd))
654 661 return (1);
655 662
656 663 /*
657 664 * ChecK against Magic Table entries.
658 665 * The magic entries checked here always start with default
659 666 * magic tests and may be followed by other, non-default magic
660 667 * tests. If no default tests are to be executed, all the
661 668 * magic tests should have been in the first magic table.
662 669 */
663 670 switch (f_ckmtab(magicbuf, mread, 0)) {
664 671 case -1: /* Error */
665 672 exit(2);
666 673 break;
667 674 case 0: /* Not magic */
668 675 return (0);
669 676 /* NOTREACHED */
670 677 break;
671 678 default: /* Switch is magic index */
672 679
673 680 /*
674 681 * f_ckmtab recognizes file type,
675 682 * check if it is PostScript.
676 683 * if not, check if elf or a.out
677 684 */
678 685 if (magicbuf[0] == '%' && magicbuf[1] == '!') {
679 686 (void) putchar('\n');
680 687 } else {
681 688
682 689 /*
683 690 * Check that the file is executable (dynamic
684 691 * objects must be executable to be exec'ed,
685 692 * shared objects need not be, but by convention
686 693 * should be executable).
687 694 *
688 695 * Note that we should already have processed
689 696 * the file if it was an ELF file.
690 697 */
691 698 ar_coff_or_aout(elffd);
692 699 (void) putchar('\n');
693 700 }
694 701 return (1);
695 702 /* NOTREACHED */
696 703 break;
697 704 }
698 705
699 706 return (0); /* file was not identified */
700 707 }
701 708
702 709 /*
703 710 * def_context_tests() - default context-sensitive tests.
704 711 * These are the last tests to be applied.
705 712 * If no match is found, prints out "data".
706 713 */
707 714
708 715 static void
709 716 def_context_tests(void)
710 717 {
711 718 int j;
712 719 int nl;
713 720 char ch;
714 721 int len;
715 722
716 723 if (ccom() == 0)
717 724 goto notc;
718 725 while (fbuf[i] == '#') {
719 726 j = i;
720 727 while (fbuf[i++] != '\n') {
721 728 if (i - j > 255) {
722 729 (void) printf(gettext("data\n"));
723 730 return;
724 731 }
725 732 if (i >= fbsz)
726 733 goto notc;
727 734 }
728 735 if (ccom() == 0)
729 736 goto notc;
730 737 }
731 738 check:
732 739 if (lookup(c) == 1) {
733 740 while ((ch = fbuf[i]) != ';' && ch != '{') {
734 741 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
735 742 len = 1;
736 743 i += len;
737 744 if (i >= fbsz)
738 745 goto notc;
739 746 }
740 747 (void) printf(gettext("c program text"));
741 748 goto outa;
742 749 }
743 750 nl = 0;
744 751 while (fbuf[i] != '(') {
745 752 if (fbuf[i] <= 0)
746 753 goto notas;
747 754 if (fbuf[i] == ';') {
748 755 i++;
749 756 goto check;
750 757 }
751 758 if (fbuf[i++] == '\n')
752 759 if (nl++ > 6)
753 760 goto notc;
754 761 if (i >= fbsz)
755 762 goto notc;
756 763 }
757 764 while (fbuf[i] != ')') {
758 765 if (fbuf[i++] == '\n')
759 766 if (nl++ > 6)
760 767 goto notc;
761 768 if (i >= fbsz)
762 769 goto notc;
763 770 }
764 771 while (fbuf[i] != '{') {
765 772 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
766 773 len = 1;
767 774 if (fbuf[i] == '\n')
768 775 if (nl++ > 6)
769 776 goto notc;
770 777 i += len;
771 778 if (i >= fbsz)
772 779 goto notc;
773 780 }
774 781 (void) printf(gettext("c program text"));
775 782 goto outa;
776 783 notc:
777 784 i = 0; /* reset to begining of file again */
778 785 while (fbuf[i] == 'c' || fbuf[i] == 'C'|| fbuf[i] == '!' ||
779 786 fbuf[i] == '*' || fbuf[i] == '\n') {
780 787 while (fbuf[i++] != '\n')
781 788 if (i >= fbsz)
782 789 goto notfort;
783 790 }
784 791 if (lookup(fort) == 1) {
785 792 (void) printf(gettext("fortran program text"));
786 793 goto outa;
787 794 }
788 795 notfort: /* looking for assembler program */
789 796 i = 0; /* reset to beginning of file again */
790 797 if (ccom() == 0) /* assembler programs may contain */
791 798 /* c-style comments */
792 799 goto notas;
793 800 if (ascom() == 0)
794 801 goto notas;
795 802 j = i - 1;
796 803 if (fbuf[i] == '.') {
797 804 i++;
798 805 if (lookup(as) == 1) {
799 806 (void) printf(gettext("assembler program text"));
800 807 goto outa;
801 808 } else if (j != -1 && fbuf[j] == '\n' && isalpha(fbuf[j + 2])) {
802 809 (void) printf(
803 810 gettext("[nt]roff, tbl, or eqn input text"));
804 811 goto outa;
805 812 }
806 813 }
807 814 while (lookup(asc) == 0) {
808 815 if (ccom() == 0)
809 816 goto notas;
810 817 if (ascom() == 0)
811 818 goto notas;
812 819 while (fbuf[i] != '\n' && fbuf[i++] != ':') {
813 820 if (i >= fbsz)
814 821 goto notas;
815 822 }
816 823 while (fbuf[i] == '\n' || fbuf[i] == ' ' || fbuf[i] == '\t')
817 824 if (i++ >= fbsz)
818 825 goto notas;
819 826 j = i - 1;
820 827 if (fbuf[i] == '.') {
821 828 i++;
822 829 if (lookup(as) == 1) {
823 830 (void) printf(
824 831 gettext("assembler program text"));
825 832 goto outa;
826 833 } else if (fbuf[j] == '\n' && isalpha(fbuf[j+2])) {
827 834 (void) printf(
828 835 gettext("[nt]roff, tbl, or eqn input "
829 836 "text"));
830 837 goto outa;
831 838 }
832 839 }
833 840 }
834 841 (void) printf(gettext("assembler program text"));
835 842 goto outa;
836 843 notas:
837 844 /* start modification for multibyte env */
838 845 IS_ascii = 1;
839 846 if (fbsz < FBSZ)
840 847 Max = fbsz;
841 848 else
842 849 Max = FBSZ - MB_LEN_MAX; /* prevent cut of wchar read */
843 850 /* end modification for multibyte env */
844 851
845 852 for (i = 0; i < Max; /* null */)
846 853 if (fbuf[i] & 0200) {
847 854 IS_ascii = 0;
848 855 if (fbuf[0] == '\100' && fbuf[1] == '\357') {
849 856 (void) printf(gettext("troff output\n"));
850 857 return;
851 858 }
852 859 /* start modification for multibyte env */
853 860 if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))
854 861 <= 0 || !iswprint(wchar)) {
855 862 (void) printf(gettext("data\n"));
856 863 return;
857 864 }
858 865 i += length;
859 866 }
860 867 else
861 868 i++;
862 869 i = fbsz;
863 870 /* end modification for multibyte env */
864 871 if (mbuf.st_mode&(S_IXUSR|S_IXGRP|S_IXOTH))
865 872 (void) printf(gettext("commands text"));
866 873 else if (troffint(fbuf, fbsz))
867 874 (void) printf(gettext("troff intermediate output text"));
868 875 else if (english(fbuf, fbsz))
869 876 (void) printf(gettext("English text"));
870 877 else if (IS_ascii)
871 878 (void) printf(gettext("ascii text"));
872 879 else
873 880 (void) printf(gettext("text")); /* for multibyte env */
874 881 outa:
875 882 /*
876 883 * This code is to make sure that no MB char is cut in half
877 884 * while still being used.
878 885 */
879 886 fbsz = (fbsz < FBSZ ? fbsz : fbsz - MB_CUR_MAX + 1);
880 887 while (i < fbsz) {
881 888 if (isascii(fbuf[i])) {
882 889 i++;
883 890 continue;
884 891 } else {
885 892 if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))
886 893 <= 0 || !iswprint(wchar)) {
887 894 (void) printf(gettext(" with garbage\n"));
888 895 return;
889 896 }
890 897 i = i + length;
891 898 }
892 899 }
893 900 (void) printf("\n");
894 901 }
895 902
896 903 static int
897 904 troffint(char *bp, int n)
898 905 {
899 906 int k;
900 907
901 908 i = 0;
902 909 for (k = 0; k < 6; k++) {
903 910 if (lookup(troff) == 0)
904 911 return (0);
905 912 if (lookup(troff) == 0)
906 913 return (0);
907 914 while (i < n && bp[i] != '\n')
908 915 i++;
909 916 if (i++ >= n)
910 917 return (0);
911 918 }
912 919 return (1);
913 920 }
914 921
915 922 static void
916 923 ar_coff_or_aout(int elffd)
917 924 {
918 925 Elf *elf;
919 926
920 927 /*
921 928 * Get the files elf descriptor and process it as an elf or
922 929 * a.out (4.x) file.
923 930 */
924 931
925 932 elf = elf_begin(elffd, ELF_C_READ, (Elf *)0);
926 933 switch (elf_kind(elf)) {
927 934 case ELF_K_AR :
928 935 (void) printf(gettext(", not a dynamic executable "
929 936 "or shared object"));
930 937 break;
931 938 case ELF_K_COFF:
932 939 (void) printf(gettext(", unsupported or unknown "
933 940 "file type"));
934 941 break;
935 942 default:
936 943 /*
937 944 * This is either an unknown file or an aout format
938 945 * At this time, we don't print dynamic/stripped
939 946 * info. on a.out or non-Elf binaries.
940 947 */
941 948 break;
942 949 }
943 950 (void) elf_end(elf);
944 951 }
945 952
946 953
947 954 static void
948 955 print_elf_type(Elf_Info EI)
949 956 {
950 957 switch (EI.type) {
951 958 case ET_NONE:
952 959 (void) printf(" %s", gettext("unknown type"));
953 960 break;
954 961 case ET_REL:
955 962 (void) printf(" %s", gettext("relocatable"));
956 963 break;
957 964 case ET_EXEC:
958 965 (void) printf(" %s", gettext("executable"));
959 966 break;
960 967 case ET_DYN:
961 968 (void) printf(" %s", gettext("dynamic lib"));
962 969 break;
963 970 default:
964 971 break;
965 972 }
966 973 }
967 974
968 975 static void
969 976 print_elf_machine(int machine)
970 977 {
971 978 /*
972 979 * This table must be kept in sync with the EM_ constants
973 980 * in /usr/include/sys/elf.h.
974 981 */
975 982 static const char *mach_str[EM_NUM] = {
976 983 "unknown machine", /* 0 - EM_NONE */
977 984 "WE32100", /* 1 - EM_M32 */
978 985 "SPARC", /* 2 - EM_SPARC */
979 986 "80386", /* 3 - EM_386 */
980 987 "M68000", /* 4 - EM_68K */
981 988 "M88000", /* 5 - EM_88K */
982 989 "80486", /* 6 - EM_486 */
983 990 "i860", /* 7 - EM_860 */
984 991 "MIPS RS3000 Big-Endian", /* 8 - EM_MIPS */
985 992 "S/370", /* 9 - EM_S370 */
986 993 "MIPS RS3000 Little-Endian", /* 10 - EM_MIPS_RS3_LE */
987 994 "MIPS RS6000", /* 11 - EM_RS6000 */
988 995 NULL, /* 12 - EM_UNKNOWN12 */
989 996 NULL, /* 13 - EM_UNKNOWN13 */
990 997 NULL, /* 14 - EM_UNKNOWN14 */
991 998 "PA-RISC", /* 15 - EM_PA_RISC */
992 999 "nCUBE", /* 16 - EM_nCUBE */
993 1000 "VPP500", /* 17 - EM_VPP500 */
994 1001 "SPARC32PLUS", /* 18 - EM_SPARC32PLUS */
995 1002 "i960", /* 19 - EM_960 */
996 1003 "PowerPC", /* 20 - EM_PPC */
997 1004 "PowerPC64", /* 21 - EM_PPC64 */
998 1005 "S/390", /* 22 - EM_S390 */
999 1006 NULL, /* 23 - EM_UNKNOWN23 */
1000 1007 NULL, /* 24 - EM_UNKNOWN24 */
1001 1008 NULL, /* 25 - EM_UNKNOWN25 */
1002 1009 NULL, /* 26 - EM_UNKNOWN26 */
1003 1010 NULL, /* 27 - EM_UNKNOWN27 */
1004 1011 NULL, /* 28 - EM_UNKNOWN28 */
1005 1012 NULL, /* 29 - EM_UNKNOWN29 */
1006 1013 NULL, /* 30 - EM_UNKNOWN30 */
1007 1014 NULL, /* 31 - EM_UNKNOWN31 */
1008 1015 NULL, /* 32 - EM_UNKNOWN32 */
1009 1016 NULL, /* 33 - EM_UNKNOWN33 */
1010 1017 NULL, /* 34 - EM_UNKNOWN34 */
1011 1018 NULL, /* 35 - EM_UNKNOWN35 */
1012 1019 "V800", /* 36 - EM_V800 */
1013 1020 "FR20", /* 37 - EM_FR20 */
1014 1021 "RH32", /* 38 - EM_RH32 */
1015 1022 "RCE", /* 39 - EM_RCE */
1016 1023 "ARM", /* 40 - EM_ARM */
1017 1024 "Alpha", /* 41 - EM_ALPHA */
1018 1025 "S/390", /* 42 - EM_SH */
1019 1026 "SPARCV9", /* 43 - EM_SPARCV9 */
1020 1027 "Tricore", /* 44 - EM_TRICORE */
1021 1028 "ARC", /* 45 - EM_ARC */
1022 1029 "H8/300", /* 46 - EM_H8_300 */
1023 1030 "H8/300H", /* 47 - EM_H8_300H */
1024 1031 "H8S", /* 48 - EM_H8S */
1025 1032 "H8/500", /* 49 - EM_H8_500 */
1026 1033 "IA64", /* 50 - EM_IA_64 */
1027 1034 "MIPS-X", /* 51 - EM_MIPS_X */
1028 1035 "Coldfire", /* 52 - EM_COLDFIRE */
1029 1036 "M68HC12", /* 53 - EM_68HC12 */
1030 1037 "MMA", /* 54 - EM_MMA */
1031 1038 "PCP", /* 55 - EM_PCP */
1032 1039 "nCPU", /* 56 - EM_NCPU */
1033 1040 "NDR1", /* 57 - EM_NDR1 */
1034 1041 "Starcore", /* 58 - EM_STARCORE */
1035 1042 "ME16", /* 59 - EM_ME16 */
1036 1043 "ST100", /* 60 - EM_ST100 */
1037 1044 "TINYJ", /* 61 - EM_TINYJ */
1038 1045 "AMD64", /* 62 - EM_AMD64 */
1039 1046 "PDSP", /* 63 - EM_PDSP */
1040 1047 NULL, /* 64 - EM_UNKNOWN64 */
1041 1048 NULL, /* 65 - EM_UNKNOWN65 */
1042 1049 "FX66", /* 66 - EM_FX66 */
1043 1050 "ST9 PLUS", /* 67 - EM_ST9PLUS */
1044 1051 "ST7", /* 68 - EM_ST7 */
1045 1052 "68HC16", /* 69 - EM_68HC16 */
1046 1053 "68HC11", /* 70 - EM_68HC11 */
1047 1054 "68H08", /* 71 - EM_68HC08 */
1048 1055 "68HC05", /* 72 - EM_68HC05 */
1049 1056 "SVX", /* 73 - EM_SVX */
1050 1057 "ST19", /* 74 - EM_ST19 */
1051 1058 "VAX", /* 75 - EM_VAX */
1052 1059 "CRIS", /* 76 - EM_CRIS */
1053 1060 "Javelin", /* 77 - EM_JAVELIN */
1054 1061 "Firepath", /* 78 - EM_FIREPATH */
1055 1062 "ZSP", /* 79 - EM_ZSP */
1056 1063 "MMIX", /* 80 - EM_MMIX */
1057 1064 "HUANY", /* 81 - EM_HUANY */
1058 1065 "Prism", /* 82 - EM_PRISM */
1059 1066 "AVR", /* 83 - EM_AVR */
1060 1067 "FR30", /* 84 - EM_FR30 */
1061 1068 "D10V", /* 85 - EM_D10V */
1062 1069 "D30V", /* 86 - EM_D30V */
1063 1070 "V850", /* 87 - EM_V850 */
1064 1071 "M32R", /* 88 - EM_M32R */
1065 1072 "MN10300", /* 89 - EM_MN10300 */
1066 1073 "MN10200", /* 90 - EM_MN10200 */
1067 1074 "picoJava", /* 91 - EM_PJ */
1068 1075 "OpenRISC", /* 92 - EM_OPENRISC */
1069 1076 "Tangent-A5", /* 93 - EM_ARC_A5 */
1070 1077 "Xtensa" /* 94 - EM_XTENSA */
1071 1078 };
1072 1079 /* If new machine is added, refuse to compile until we're updated */
1073 1080 #if EM_NUM != 95
1074 1081 #error "Number of known ELF machine constants has changed"
1075 1082 #endif
1076 1083
1077 1084 const char *str;
1078 1085
1079 1086 if ((machine < EM_NONE) || (machine >= EM_NUM))
1080 1087 machine = EM_NONE;
1081 1088
1082 1089 str = mach_str[machine];
1083 1090 if (str)
1084 1091 (void) printf(" %s", str);
1085 1092 }
1086 1093
1087 1094 static void
1088 1095 print_elf_datatype(int datatype)
1089 1096 {
1090 1097 switch (datatype) {
1091 1098 case ELFDATA2LSB:
1092 1099 (void) printf(" LSB");
1093 1100 break;
1094 1101 case ELFDATA2MSB:
1095 1102 (void) printf(" MSB");
1096 1103 break;
1097 1104 default:
1098 1105 break;
1099 1106 }
1100 1107 }
1101 1108
1102 1109 static void
1103 1110 print_elf_class(int class)
1104 1111 {
1105 1112 switch (class) {
1106 1113 case ELFCLASS32:
1107 1114 (void) printf(" %s", gettext("32-bit"));
1108 1115 break;
1109 1116 case ELFCLASS64:
1110 1117 (void) printf(" %s", gettext("64-bit"));
1111 1118 break;
1112 1119 default:
1113 1120 break;
1114 1121 }
1115 1122 }
1116 1123
1117 1124 static void
1118 1125 print_elf_flags(Elf_Info EI)
1119 1126 {
1120 1127 unsigned int flags;
1121 1128
1122 1129 flags = EI.flags;
1123 1130 switch (EI.machine) {
1124 1131 case EM_SPARCV9:
1125 1132 if (flags & EF_SPARC_EXT_MASK) {
1126 1133 if (flags & EF_SPARC_SUN_US3) {
1127 1134 (void) printf("%s", gettext(
1128 1135 ", UltraSPARC3 Extensions Required"));
1129 1136 } else if (flags & EF_SPARC_SUN_US1) {
1130 1137 (void) printf("%s", gettext(
1131 1138 ", UltraSPARC1 Extensions Required"));
1132 1139 }
1133 1140 if (flags & EF_SPARC_HAL_R1)
1134 1141 (void) printf("%s", gettext(
1135 1142 ", HaL R1 Extensions Required"));
1136 1143 }
1137 1144 break;
1138 1145 case EM_SPARC32PLUS:
1139 1146 if (flags & EF_SPARC_32PLUS)
1140 1147 (void) printf("%s", gettext(", V8+ Required"));
1141 1148 if (flags & EF_SPARC_SUN_US3) {
1142 1149 (void) printf("%s",
1143 1150 gettext(", UltraSPARC3 Extensions Required"));
1144 1151 } else if (flags & EF_SPARC_SUN_US1) {
1145 1152 (void) printf("%s",
1146 1153 gettext(", UltraSPARC1 Extensions Required"));
1147 1154 }
1148 1155 if (flags & EF_SPARC_HAL_R1)
1149 1156 (void) printf("%s",
1150 1157 gettext(", HaL R1 Extensions Required"));
1151 1158 break;
1152 1159 default:
1153 1160 break;
1154 1161 }
1155 1162 }
1156 1163
1157 1164 /*
1158 1165 * check_ident: checks the ident field of the presumeably
1159 1166 * elf file. If check fails, this is not an
1160 1167 * elf file.
1161 1168 */
1162 1169 static int
1163 1170 check_ident(unsigned char *ident, int fd)
1164 1171 {
1165 1172 int class;
1166 1173 if (pread64(fd, ident, EI_NIDENT, 0) != EI_NIDENT)
1167 1174 return (ELF_READ_FAIL);
1168 1175 class = ident[EI_CLASS];
1169 1176 if (class != ELFCLASS32 && class != ELFCLASS64)
1170 1177 return (ELF_READ_FAIL);
1171 1178 if (ident[EI_MAG0] != ELFMAG0 || ident[EI_MAG1] != ELFMAG1 ||
1172 1179 ident[EI_MAG2] != ELFMAG2 || ident[EI_MAG3] != ELFMAG3)
1173 1180 return (ELF_READ_FAIL);
1174 1181
1175 1182 return (ELF_READ_OKAY);
1176 1183 }
1177 1184
1178 1185 static int
1179 1186 elf_check(char *file)
1180 1187 {
1181 1188 Elf_Info EInfo;
1182 1189 int class, version, format;
1183 1190 unsigned char ident[EI_NIDENT];
1184 1191
1185 1192 (void) memset(&EInfo, 0, sizeof (Elf_Info));
1186 1193 EInfo.file = file;
1187 1194
1188 1195 /*
1189 1196 * Verify information in file indentifier.
1190 1197 * Return quietly if not elf; Different type of file.
1191 1198 */
1192 1199 if (check_ident(ident, elffd) == ELF_READ_FAIL)
1193 1200 return (1);
1194 1201
1195 1202 /*
1196 1203 * Read the elf headers for processing and get the
1197 1204 * get the needed information in Elf_Info struct.
1198 1205 */
1199 1206 class = ident[EI_CLASS];
1200 1207 if (class == ELFCLASS32) {
1201 1208 if (elf_read32(elffd, &EInfo) == ELF_READ_FAIL) {
1202 1209 (void) fprintf(stderr, gettext("%s: %s: can't "
1203 1210 "read ELF header\n"), File, file);
1204 1211 return (1);
1205 1212 }
1206 1213 } else if (class == ELFCLASS64) {
1207 1214 if (elf_read64(elffd, &EInfo) == ELF_READ_FAIL) {
1208 1215 (void) fprintf(stderr, gettext("%s: %s: can't "
1209 1216 "read ELF header\n"), File, file);
1210 1217 return (1);
1211 1218 }
1212 1219 } else {
1213 1220 /* something wrong */
1214 1221 return (1);
1215 1222 }
1216 1223
1217 1224 /* version not in ident then 1 */
1218 1225 version = ident[EI_VERSION] ? ident[EI_VERSION] : 1;
1219 1226
1220 1227 format = ident[EI_DATA];
1221 1228 (void) printf("%s", gettext("ELF"));
1222 1229 print_elf_class(class);
1223 1230 print_elf_datatype(format);
1224 1231 print_elf_type(EInfo);
1225 1232
1226 1233 if (EInfo.core_type != EC_NOTCORE) {
1227 1234 /* Print what kind of core is this */
1228 1235 if (EInfo.core_type == EC_OLDCORE)
1229 1236 (void) printf(" %s", gettext("pre-2.6 core file"));
1230 1237 else
1231 1238 (void) printf(" %s", gettext("core file"));
1232 1239 }
1233 1240
1234 1241 /* Print machine info */
1235 1242 print_elf_machine(EInfo.machine);
1236 1243
1237 1244 /* Print Version */
1238 1245 if (version == 1)
1239 1246 (void) printf(" %s %d", gettext("Version"), version);
1240 1247
1241 1248 /* Print Flags */
1242 1249 print_elf_flags(EInfo);
1243 1250
1244 1251 /* Last bit, if it is a core */
1245 1252 if (EInfo.core_type != EC_NOTCORE) {
1246 1253 /* Print the program name that dumped this core */
1247 1254 (void) printf(gettext(", from '%s'"), EInfo.fname);
1248 1255 return (0);
1249 1256 }
1250 1257
1251 1258 /* Print Capabilities */
1252 1259 if (EInfo.cap_str[0] != '\0')
1253 1260 (void) printf(" [%s]", EInfo.cap_str);
1254 1261
1255 1262 if ((EInfo.type != ET_EXEC) && (EInfo.type != ET_DYN))
1256 1263 return (0);
1257 1264
1258 1265 /* Print if it is dynamically linked */
1259 1266 if (EInfo.dynamic)
1260 1267 (void) printf(gettext(", dynamically linked"));
1261 1268 else
1262 1269 (void) printf(gettext(", statically linked"));
1263 1270
1264 1271 /* Printf it it is stripped */
1265 1272 if (EInfo.stripped & E_SYMTAB) {
1266 1273 (void) printf(gettext(", not stripped"));
1267 1274 if (!(EInfo.stripped & E_DBGINF)) {
1268 1275 (void) printf(gettext(
1269 1276 ", no debugging information available"));
1270 1277 }
1271 1278 } else {
1272 1279 (void) printf(gettext(", stripped"));
1273 1280 }
1274 1281
1275 1282 return (0);
1276 1283 }
1277 1284
1278 1285 /*
1279 1286 * is_rtld_config - If file is a runtime linker config file, prints
1280 1287 * the description and returns True (1). Otherwise, silently returns
1281 1288 * False (0).
1282 1289 */
1283 1290 int
1284 1291 is_rtld_config(void)
1285 1292 {
1286 1293 Rtc_id *id;
1287 1294
1288 1295 if ((fbsz >= sizeof (*id)) && RTC_ID_TEST(fbuf)) {
1289 1296 (void) printf(gettext("Runtime Linking Configuration"));
1290 1297 id = (Rtc_id *) fbuf;
1291 1298 print_elf_class(id->id_class);
1292 1299 print_elf_datatype(id->id_data);
1293 1300 print_elf_machine(id->id_machine);
1294 1301 (void) printf("\n");
1295 1302 return (1);
1296 1303 }
1297 1304
1298 1305 return (0);
1299 1306 }
1300 1307
1301 1308 /*
1302 1309 * lookup -
1303 1310 * Attempts to match one of the strings from a list, 'tab',
1304 1311 * with what is in the file, starting at the current index position 'i'.
1305 1312 * Looks past any initial whitespace and expects whitespace or other
1306 1313 * delimiting characters to follow the matched string.
1307 1314 * A match identifies the file as being 'assembler', 'fortran', 'c', etc.
1308 1315 * Returns 1 for a successful match, 0 otherwise.
1309 1316 */
1310 1317 static int
1311 1318 lookup(char **tab)
1312 1319 {
1313 1320 register char r;
1314 1321 register int k, j, l;
1315 1322
1316 1323 while (fbuf[i] == ' ' || fbuf[i] == '\t' || fbuf[i] == '\n')
1317 1324 i++;
1318 1325 for (j = 0; tab[j] != 0; j++) {
1319 1326 l = 0;
1320 1327 for (k = i; ((r = tab[j][l++]) == fbuf[k] && r != '\0'); k++)
1321 1328 ;
1322 1329 if (r == '\0')
1323 1330 if (fbuf[k] == ' ' || fbuf[k] == '\n' ||
1324 1331 fbuf[k] == '\t' || fbuf[k] == '{' ||
1325 1332 fbuf[k] == '/') {
1326 1333 i = k;
1327 1334 return (1);
1328 1335 }
1329 1336 }
1330 1337 return (0);
1331 1338 }
1332 1339
1333 1340 /*
1334 1341 * ccom -
1335 1342 * Increments the current index 'i' into the file buffer 'fbuf' past any
1336 1343 * whitespace lines and C-style comments found, starting at the current
1337 1344 * position of 'i'. Returns 1 as long as we don't increment i past the
1338 1345 * size of fbuf (fbsz). Otherwise, returns 0.
1339 1346 */
1340 1347
1341 1348 static int
1342 1349 ccom(void)
1343 1350 {
1344 1351 register char cc;
1345 1352 int len;
1346 1353
1347 1354 while ((cc = fbuf[i]) == ' ' || cc == '\t' || cc == '\n')
1348 1355 if (i++ >= fbsz)
1349 1356 return (0);
1350 1357 if (fbuf[i] == '/' && fbuf[i+1] == '*') {
1351 1358 i += 2;
1352 1359 while (fbuf[i] != '*' || fbuf[i+1] != '/') {
1353 1360 if (fbuf[i] == '\\')
1354 1361 i++;
1355 1362 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
1356 1363 len = 1;
1357 1364 i += len;
1358 1365 if (i >= fbsz)
1359 1366 return (0);
1360 1367 }
1361 1368 if ((i += 2) >= fbsz)
1362 1369 return (0);
1363 1370 }
1364 1371 if (fbuf[i] == '\n')
1365 1372 if (ccom() == 0)
1366 1373 return (0);
1367 1374 return (1);
1368 1375 }
1369 1376
1370 1377 /*
1371 1378 * ascom -
1372 1379 * Increments the current index 'i' into the file buffer 'fbuf' past
1373 1380 * consecutive assembler program comment lines starting with ASCOMCHAR,
1374 1381 * starting at the current position of 'i'.
1375 1382 * Returns 1 as long as we don't increment i past the
1376 1383 * size of fbuf (fbsz). Otherwise returns 0.
1377 1384 */
1378 1385
1379 1386 static int
1380 1387 ascom(void)
1381 1388 {
1382 1389 while (fbuf[i] == ASCOMCHAR) {
1383 1390 i++;
1384 1391 while (fbuf[i++] != '\n')
1385 1392 if (i >= fbsz)
1386 1393 return (0);
1387 1394 while (fbuf[i] == '\n')
1388 1395 if (i++ >= fbsz)
1389 1396 return (0);
1390 1397 }
1391 1398 return (1);
1392 1399 }
1393 1400
1394 1401 static int
1395 1402 sccs(void)
1396 1403 { /* look for "1hddddd" where d is a digit */
1397 1404 register int j;
1398 1405
1399 1406 if (fbuf[0] == 1 && fbuf[1] == 'h') {
1400 1407 for (j = 2; j <= 6; j++) {
1401 1408 if (isdigit(fbuf[j]))
1402 1409 continue;
1403 1410 else
1404 1411 return (0);
1405 1412 }
1406 1413 } else {
1407 1414 return (0);
1408 1415 }
1409 1416 return (1);
1410 1417 }
1411 1418
1412 1419 static int
1413 1420 english(char *bp, int n)
1414 1421 {
1415 1422 #define NASC 128 /* number of ascii char ?? */
1416 1423 register int j, vow, freq, rare, len;
1417 1424 register int badpun = 0, punct = 0;
1418 1425 int ct[NASC];
1419 1426
1420 1427 if (n < 50)
1421 1428 return (0); /* no point in statistics on squibs */
1422 1429 for (j = 0; j < NASC; j++)
1423 1430 ct[j] = 0;
1424 1431 for (j = 0; j < n; j += len) {
1425 1432 if ((unsigned char)bp[j] < NASC)
1426 1433 ct[bp[j]|040]++;
1427 1434 switch (bp[j]) {
1428 1435 case '.':
1429 1436 case ',':
1430 1437 case ')':
1431 1438 case '%':
1432 1439 case ';':
1433 1440 case ':':
1434 1441 case '?':
1435 1442 punct++;
1436 1443 if (j < n-1 && bp[j+1] != ' ' && bp[j+1] != '\n')
1437 1444 badpun++;
1438 1445 }
1439 1446 if ((len = mblen(&bp[j], MB_CUR_MAX)) <= 0)
1440 1447 len = 1;
1441 1448 }
1442 1449 if (badpun*5 > punct)
1443 1450 return (0);
1444 1451 vow = ct['a'] + ct['e'] + ct['i'] + ct['o'] + ct['u'];
1445 1452 freq = ct['e'] + ct['t'] + ct['a'] + ct['i'] + ct['o'] + ct['n'];
1446 1453 rare = ct['v'] + ct['j'] + ct['k'] + ct['q'] + ct['x'] + ct['z'];
1447 1454 if (2*ct[';'] > ct['e'])
1448 1455 return (0);
1449 1456 if ((ct['>'] + ct['<'] + ct['/']) > ct['e'])
1450 1457 return (0); /* shell file test */
1451 1458 return (vow * 5 >= n - ct[' '] && freq >= 10 * rare);
1452 1459 }
1453 1460
1454 1461
1455 1462 static int
1456 1463 shellscript(char buf[], struct stat64 *sb)
1457 1464 {
1458 1465 char *tp, *cp, *xp, *up, *gp;
1459 1466
1460 1467 cp = strchr(buf, '\n');
1461 1468 if (cp == NULL || cp - fbuf > fbsz)
1462 1469 return (0);
1463 1470 for (tp = buf; tp != cp && isspace((unsigned char)*tp); tp++)
1464 1471 if (!isascii(*tp))
1465 1472 return (0);
1466 1473 for (xp = tp; tp != cp && !isspace((unsigned char)*tp); tp++)
1467 1474 if (!isascii(*tp))
1468 1475 return (0);
1469 1476 if (tp == xp)
1470 1477 return (0);
1471 1478 if (sb->st_mode & S_ISUID)
1472 1479 up = gettext("set-uid ");
1473 1480 else
1474 1481 up = "";
1475 1482
1476 1483 if (sb->st_mode & S_ISGID)
1477 1484 gp = gettext("set-gid ");
1478 1485 else
1479 1486 gp = "";
1480 1487
1481 1488 if (strncmp(xp, "/bin/sh", tp - xp) == 0)
1482 1489 xp = gettext("shell");
1483 1490 else if (strncmp(xp, "/bin/csh", tp - xp) == 0)
1484 1491 xp = gettext("c-shell");
1485 1492 else if (strncmp(xp, "/usr/sbin/dtrace", tp - xp) == 0)
1486 1493 xp = gettext("DTrace");
1487 1494 else
1488 1495 *tp = '\0';
1489 1496 /*
1490 1497 * TRANSLATION_NOTE
1491 1498 * This message is printed by file command for shell scripts.
1492 1499 * The first %s is for the translation for "set-uid " (if the script
1493 1500 * has the set-uid bit set), or is for an empty string (if the
1494 1501 * script does not have the set-uid bit set).
1495 1502 * Similarly, the second %s is for the translation for "set-gid ",
1496 1503 * or is for an empty string.
1497 1504 * The third %s is for the translation for either: "shell", "c-shell",
1498 1505 * or "DTrace", or is for the pathname of the program the script
1499 1506 * executes.
1500 1507 */
1501 1508 (void) printf(gettext("%s%sexecutable %s script\n"), up, gp, xp);
1502 1509 return (1);
1503 1510 }
1504 1511
1505 1512 static int
1506 1513 get_door_target(char *file, char *buf, size_t bufsize)
1507 1514 {
1508 1515 int fd;
1509 1516 door_info_t di;
1510 1517 psinfo_t psinfo;
1511 1518
1512 1519 if ((fd = open64(file, O_RDONLY)) < 0 ||
1513 1520 door_info(fd, &di) != 0) {
1514 1521 if (fd >= 0)
1515 1522 (void) close(fd);
1516 1523 return (-1);
1517 1524 }
1518 1525 (void) close(fd);
1519 1526
1520 1527 (void) sprintf(buf, "/proc/%ld/psinfo", di.di_target);
1521 1528 if ((fd = open64(buf, O_RDONLY)) < 0 ||
1522 1529 read(fd, &psinfo, sizeof (psinfo)) != sizeof (psinfo)) {
1523 1530 if (fd >= 0)
1524 1531 (void) close(fd);
1525 1532 return (-1);
1526 1533 }
1527 1534 (void) close(fd);
1528 1535
1529 1536 (void) snprintf(buf, bufsize, "%s[%ld]", psinfo.pr_fname, di.di_target);
1530 1537 return (0);
1531 1538 }
1532 1539
1533 1540 /*
1534 1541 * ZIP file header information
1535 1542 */
1536 1543 #define SIGSIZ 4
1537 1544 #define LOCSIG "PK\003\004"
1538 1545 #define LOCHDRSIZ 30
1539 1546
1540 1547 #define CH(b, n) (((unsigned char *)(b))[n])
1541 1548 #define SH(b, n) (CH(b, n) | (CH(b, n+1) << 8))
1542 1549 #define LG(b, n) (SH(b, n) | (SH(b, n+2) << 16))
1543 1550
1544 1551 #define LOCNAM(b) (SH(b, 26)) /* filename size */
1545 1552 #define LOCEXT(b) (SH(b, 28)) /* extra field size */
1546 1553
1547 1554 #define XFHSIZ 4 /* header id, data size */
1548 1555 #define XFHID(b) (SH(b, 0)) /* extract field header id */
1549 1556 #define XFDATASIZ(b) (SH(b, 2)) /* extract field data size */
1550 1557 #define XFJAVASIG 0xcafe /* java executables */
1551 1558
1552 1559 static int
1553 1560 zipfile(char *fbuf, int fd)
1554 1561 {
1555 1562 off_t xoff, xoff_end;
1556 1563
1557 1564 if (strncmp(fbuf, LOCSIG, SIGSIZ) != 0)
1558 1565 return (0);
1559 1566
1560 1567 xoff = LOCHDRSIZ + LOCNAM(fbuf);
1561 1568 xoff_end = xoff + LOCEXT(fbuf);
1562 1569
1563 1570 while (xoff < xoff_end) {
1564 1571 char xfhdr[XFHSIZ];
1565 1572
1566 1573 if (pread(fd, xfhdr, XFHSIZ, xoff) != XFHSIZ)
1567 1574 break;
1568 1575
1569 1576 if (XFHID(xfhdr) == XFJAVASIG) {
1570 1577 (void) printf("%s\n", gettext("java archive file"));
1571 1578 return (1);
1572 1579 }
1573 1580 xoff += sizeof (xfhdr) + XFDATASIZ(xfhdr);
1574 1581 }
1575 1582
1576 1583 /*
1577 1584 * We could just print "ZIP archive" here.
1578 1585 *
1579 1586 * However, customers may be using their own entries in
1580 1587 * /etc/magic to distinguish one kind of ZIP file from another, so
1581 1588 * let's defer the printing of "ZIP archive" to there.
1582 1589 */
1583 1590 return (0);
1584 1591 }
1585 1592
1586 1593 static int
1587 1594 is_crash_dump(const char *buf, int fd)
1588 1595 {
1589 1596 /* LINTED: pointer cast may result in improper alignment */
1590 1597 const dumphdr_t *dhp = (const dumphdr_t *)buf;
1591 1598
1592 1599 /*
1593 1600 * The current DUMP_MAGIC string covers Solaris 7 and later releases.
1594 1601 * The utsname struct is only present in dumphdr_t's with dump_version
1595 1602 * greater than or equal to 9.
1596 1603 */
1597 1604 if (dhp->dump_magic == DUMP_MAGIC) {
1598 1605 print_dumphdr(fd, dhp, return_uint32, NATIVE_ISA);
1599 1606
1600 1607 } else if (dhp->dump_magic == swap_uint32(DUMP_MAGIC)) {
1601 1608 print_dumphdr(fd, dhp, swap_uint32, OTHER_ISA);
1602 1609
1603 1610 } else if (dhp->dump_magic == OLD_DUMP_MAGIC ||
1604 1611 dhp->dump_magic == swap_uint32(OLD_DUMP_MAGIC)) {
1605 1612 char *isa = (dhp->dump_magic == OLD_DUMP_MAGIC ?
1606 1613 NATIVE_ISA : OTHER_ISA);
1607 1614 (void) printf(gettext("SunOS 32-bit %s crash dump\n"), isa);
1608 1615
1609 1616 } else {
1610 1617 return (0);
1611 1618 }
1612 1619
1613 1620 return (1);
1614 1621 }
1615 1622
1616 1623 static void
1617 1624 print_dumphdr(const int fd, const dumphdr_t *dhp, uint32_t (*swap)(uint32_t),
1618 1625 const char *isa)
1619 1626 {
1620 1627 dumphdr_t dh;
1621 1628
1622 1629 /*
1623 1630 * A dumphdr_t is bigger than FBSZ, so we have to manually read the
1624 1631 * rest of it.
1625 1632 */
1626 1633 if (swap(dhp->dump_version) > 8 && pread(fd, &dh, sizeof (dumphdr_t),
1627 1634 (off_t)0) == sizeof (dumphdr_t)) {
1628 1635 const char *c = swap(dh.dump_flags) & DF_COMPRESSED ?
1629 1636 "compressed " : "";
1630 1637 const char *l = swap(dh.dump_flags) & DF_LIVE ?
1631 1638 "live" : "crash";
1632 1639
1633 1640 (void) printf(gettext(
1634 1641 "%s %s %s %u-bit %s %s%s dump from '%s'\n"),
1635 1642 dh.dump_utsname.sysname, dh.dump_utsname.release,
1636 1643 dh.dump_utsname.version, swap(dh.dump_wordsize), isa,
1637 1644 c, l, dh.dump_utsname.nodename);
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1638 1645 } else {
1639 1646 (void) printf(gettext("SunOS %u-bit %s crash dump\n"),
1640 1647 swap(dhp->dump_wordsize), isa);
1641 1648 }
1642 1649 }
1643 1650
1644 1651 static void
1645 1652 usage(void)
1646 1653 {
1647 1654 (void) fprintf(stderr, gettext(
1648 - "usage: file [-dh] [-M mfile] [-m mfile] [-f ffile] file ...\n"
1649 - " file [-dh] [-M mfile] [-m mfile] -f ffile\n"
1650 - " file -i [-h] [-f ffile] file ...\n"
1651 - " file -i [-h] -f ffile\n"
1655 + "usage: file [-bdh] [-M mfile] [-m mfile] [-f ffile] file ...\n"
1656 + " file [-bdh] [-M mfile] [-m mfile] -f ffile\n"
1657 + " file -i [-bh] [-f ffile] file ...\n"
1658 + " file -i [-bh] -f ffile\n"
1652 1659 " file -c [-d] [-M mfile] [-m mfile]\n"));
1653 1660 exit(2);
1654 1661 }
1655 1662
1656 1663 static uint32_t
1657 1664 swap_uint32(uint32_t in)
1658 1665 {
1659 1666 uint32_t out;
1660 1667
1661 1668 out = (in & 0x000000ff) << 24;
1662 1669 out |= (in & 0x0000ff00) << 8; /* >> 8 << 16 */
1663 1670 out |= (in & 0x00ff0000) >> 8; /* >> 16 << 8 */
1664 1671 out |= (in & 0xff000000) >> 24;
1665 1672
1666 1673 return (out);
1667 1674 }
1668 1675
1669 1676 static uint32_t
1670 1677 return_uint32(uint32_t in)
1671 1678 {
1672 1679 return (in);
1673 1680 }
1674 1681
1675 1682 /*
1676 1683 * Check if str is in the string list str_list.
1677 1684 */
1678 1685 int
1679 1686 is_in_list(char *str)
1680 1687 {
1681 1688 int i;
1682 1689
1683 1690 /*
1684 1691 * Only need to compare the strlen(str_list[i]) bytes.
1685 1692 * That way .stab will match on .stab* sections, and
1686 1693 * .debug will match on .debug* sections.
1687 1694 */
1688 1695 for (i = 0; debug_sections[i] != NULL; i++) {
1689 1696 if (strncmp(debug_sections[i], str,
1690 1697 strlen(debug_sections[i])) == 0) {
1691 1698 return (1);
1692 1699 }
1693 1700 }
1694 1701 return (0);
1695 1702 }
1696 1703
1697 1704 /*
1698 1705 * default_magic -
1699 1706 * allocate space for and create the default magic file
1700 1707 * name string.
1701 1708 */
1702 1709
1703 1710 static void
1704 1711 default_magic(void)
1705 1712 {
1706 1713 const char *msg_locale = setlocale(LC_MESSAGES, NULL);
1707 1714 struct stat statbuf;
1708 1715
1709 1716 if ((dfile = malloc(strlen(msg_locale) + 35)) == NULL) {
1710 1717 int err = errno;
1711 1718 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
1712 1719 File, strerror(err));
1713 1720 exit(2);
1714 1721 }
1715 1722 (void) snprintf(dfile, strlen(msg_locale) + 35,
1716 1723 "/usr/lib/locale/%s/LC_MESSAGES/magic", msg_locale);
1717 1724 if (stat(dfile, &statbuf) != 0) {
1718 1725 (void) strcpy(dfile, "/etc/magic");
1719 1726 }
1720 1727 }
1721 1728
1722 1729 /*
1723 1730 * add_to_mlist -
1724 1731 * Add the given magic_file filename string to the list of magic
1725 1732 * files (mlist). This list of files will later be examined, and
1726 1733 * each magic file's entries will be added in order to
1727 1734 * the mtab table.
1728 1735 *
1729 1736 * The first flag is set to 1 to add to the first list, mlist1.
1730 1737 * The first flag is set to 0 to add to the second list, mlist2.
1731 1738 */
1732 1739
1733 1740 static void
1734 1741 add_to_mlist(char *magic_file, int first)
1735 1742 {
1736 1743 char **mlist; /* ordered list of magic files */
1737 1744 size_t mlist_sz; /* number of pointers allocated for mlist */
1738 1745 char **mlistp; /* next entry in mlist */
1739 1746 size_t mlistp_off;
1740 1747
1741 1748 if (first) {
1742 1749 mlist = mlist1;
1743 1750 mlist_sz = mlist1_sz;
1744 1751 mlistp = mlist1p;
1745 1752 } else {
1746 1753 mlist = mlist2;
1747 1754 mlist_sz = mlist2_sz;
1748 1755 mlistp = mlist2p;
1749 1756 }
1750 1757
1751 1758 if (mlist == NULL) { /* initial mlist allocation */
1752 1759 if ((mlist = calloc(MLIST_SZ, sizeof (char *))) == NULL) {
1753 1760 int err = errno;
1754 1761 (void) fprintf(stderr, gettext("%s: malloc "
1755 1762 "failed: %s\n"), File, strerror(err));
1756 1763 exit(2);
1757 1764 }
1758 1765 mlist_sz = MLIST_SZ;
1759 1766 mlistp = mlist;
1760 1767 }
1761 1768 if ((mlistp - mlist) >= mlist_sz) {
1762 1769 mlistp_off = mlistp - mlist;
1763 1770 mlist_sz *= 2;
1764 1771 if ((mlist = realloc(mlist,
1765 1772 mlist_sz * sizeof (char *))) == NULL) {
1766 1773 int err = errno;
1767 1774 (void) fprintf(stderr, gettext("%s: malloc "
1768 1775 "failed: %s\n"), File, strerror(err));
1769 1776 exit(2);
1770 1777 }
1771 1778 mlistp = mlist + mlistp_off;
1772 1779 }
1773 1780 /*
1774 1781 * now allocate memory for and copy the
1775 1782 * magic file name string
1776 1783 */
1777 1784 if ((*mlistp = malloc(strlen(magic_file) + 1)) == NULL) {
1778 1785 int err = errno;
1779 1786 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
1780 1787 File, strerror(err));
1781 1788 exit(2);
1782 1789 }
1783 1790 (void) strlcpy(*mlistp, magic_file, strlen(magic_file) + 1);
1784 1791 mlistp++;
1785 1792
1786 1793 if (first) {
1787 1794 mlist1 = mlist;
1788 1795 mlist1_sz = mlist_sz;
1789 1796 mlist1p = mlistp;
1790 1797 } else {
1791 1798 mlist2 = mlist;
1792 1799 mlist2_sz = mlist_sz;
1793 1800 mlist2p = mlistp;
1794 1801 }
1795 1802 }
1796 1803
1797 1804 static void
1798 1805 fd_cleanup(void)
1799 1806 {
1800 1807 if (ifd != -1) {
1801 1808 (void) close(ifd);
1802 1809 ifd = -1;
1803 1810 }
1804 1811 if (elffd != -1) {
1805 1812 (void) close(elffd);
1806 1813 elffd = -1;
1807 1814 }
1808 1815 }
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