1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
22 /* All Rights Reserved */
23
24
25 /* Copyright (c) 1987, 1988 Microsoft Corporation */
26 /* All Rights Reserved */
27
28 /*
29 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
30 * Use is subject to license terms.
31 * Copyright (c) 2018, Joyent, Inc.
32 */
33
34 #define _LARGEFILE64_SOURCE
35
36 /* Get definitions for the relocation types supported. */
37 #define ELF_TARGET_ALL
38
39 #include <ctype.h>
40 #include <unistd.h>
41 #include <fcntl.h>
42 #include <signal.h>
43 #include <stdio.h>
44 #include <libelf.h>
45 #include <stdlib.h>
46 #include <limits.h>
47 #include <locale.h>
48 #include <wctype.h>
49 #include <string.h>
50 #include <errno.h>
51 #include <door.h>
52 #include <sys/param.h>
53 #include <sys/types.h>
54 #include <sys/mkdev.h>
55 #include <sys/stat.h>
56 #include <sys/elf.h>
57 #include <procfs.h>
58 #include <sys/core.h>
59 #include <sys/dumphdr.h>
60 #include <netinet/in.h>
61 #include <gelf.h>
62 #include <elfcap.h>
63 #include <sgsrtcid.h>
64 #include "file.h"
65 #include "elf_read.h"
66
67 /*
68 * Misc
69 */
70
71 #define FBSZ 512
72 #define MLIST_SZ 12
73
74 /*
75 * The 0x8FCA0102 magic string was used in crash dumps generated by releases
76 * prior to Solaris 7.
77 */
78 #define OLD_DUMP_MAGIC 0x8FCA0102
79
80 #if defined(__sparc)
81 #define NATIVE_ISA "SPARC"
82 #define OTHER_ISA "Intel"
83 #else
84 #define NATIVE_ISA "Intel"
85 #define OTHER_ISA "SPARC"
86 #endif
87
88 /* Assembly language comment char */
89 #ifdef pdp11
90 #define ASCOMCHAR '/'
91 #else
92 #define ASCOMCHAR '!'
93 #endif
94
95 #pragma align 16(fbuf)
96 static char fbuf[FBSZ];
97
98 /*
99 * Magic file variables
100 */
101 static intmax_t maxmagicoffset;
102 static intmax_t tmpmax;
103 static char *magicbuf;
104
105 static char *dfile;
106 static char *troff[] = { /* new troff intermediate lang */
107 "x", "T", "res", "init", "font", "202", "V0", "p1", 0};
108
109 static char *fort[] = { /* FORTRAN */
110 "function", "subroutine", "common", "dimension", "block",
111 "integer", "real", "data", "double",
112 "FUNCTION", "SUBROUTINE", "COMMON", "DIMENSION", "BLOCK",
113 "INTEGER", "REAL", "DATA", "DOUBLE", 0};
114
115 static char *asc[] = { /* Assembler Commands */
116 "sys", "mov", "tst", "clr", "jmp", "cmp", "set", "inc",
117 "dec", 0};
118
119 static char *c[] = { /* C Language */
120 "int", "char", "float", "double", "short", "long", "unsigned",
121 "register", "static", "struct", "extern", 0};
122
123 static char *as[] = { /* Assembler Pseudo Ops, prepended with '.' */
124 "globl", "global", "ident", "file", "byte", "even",
125 "text", "data", "bss", "comm", 0};
126
127 /*
128 * The line and debug section names are used by the strip command.
129 * Any changes in the strip implementation need to be reflected here.
130 */
131 static char *debug_sections[] = { /* Debug sections in a ELF file */
132 ".debug", ".stab", ".dwarf", ".line", NULL};
133
134 /* start for MB env */
135 static wchar_t wchar;
136 static int length;
137 static int IS_ascii;
138 static int Max;
139 /* end for MB env */
140 static int i; /* global index into first 'fbsz' bytes of file */
141 static int fbsz;
142 static int ifd = -1;
143 static int elffd = -1;
144 static int tret;
145 static int hflg;
146 static int dflg;
147 static int mflg;
148 static int M_flg;
149 static int iflg;
150 static struct stat64 mbuf;
151
152 static char **mlist1; /* 1st ordered list of magic files */
153 static char **mlist2; /* 2nd ordered list of magic files */
154 static size_t mlist1_sz; /* number of ptrs allocated for mlist1 */
155 static size_t mlist2_sz; /* number of ptrs allocated for mlist2 */
156 static char **mlist1p; /* next entry in mlist1 */
157 static char **mlist2p; /* next entry in mlist2 */
158
159 static ssize_t mread;
160
161 static void ar_coff_or_aout(int ifd);
162 static int type(char *file);
163 static int def_position_tests(char *file);
164 static void def_context_tests(void);
165 static int troffint(char *bp, int n);
166 static int lookup(char **tab);
167 static int ccom(void);
168 static int ascom(void);
169 static int sccs(void);
170 static int english(char *bp, int n);
171 static int shellscript(char buf[], struct stat64 *sb);
172 static int elf_check(char *file);
173 static int get_door_target(char *, char *, size_t);
174 static int zipfile(char *, int);
175 static int is_crash_dump(const char *, int);
176 static void print_dumphdr(const int, const dumphdr_t *, uint32_t (*)(uint32_t),
177 const char *);
178 static uint32_t swap_uint32(uint32_t);
179 static uint32_t return_uint32(uint32_t);
180 static void usage(void);
181 static void default_magic(void);
182 static void add_to_mlist(char *, int);
183 static void fd_cleanup(void);
184 static int is_rtld_config(void);
185
186 /* from elf_read.c */
187 int elf_read32(int elffd, Elf_Info *EInfo);
188 int elf_read64(int elffd, Elf_Info *EInfo);
189
190 #ifdef XPG4
191 /* SUSv3 requires a single <space> after the colon */
192 #define prf(x) (void) printf("%s: ", x);
193 #else /* !XPG4 */
194 #define prf(x) (void) printf("%s:%s", x, (int)strlen(x) > 6 ? "\t" : "\t\t");
195 #endif /* XPG4 */
196
197 /*
198 * Static program identifier - used to prevent localization of the name "file"
199 * within individual error messages.
200 */
201 const char *File = "file";
202
203 int
204 main(int argc, char **argv)
205 {
206 char *p;
207 int ch;
208 FILE *fl;
209 int bflg = 0;
210 int cflg = 0;
211 int eflg = 0;
212 int fflg = 0;
213 char *ap = NULL;
214 int pathlen;
215 char **filep;
216
217 (void) setlocale(LC_ALL, "");
218 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
219 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
220 #endif
221 (void) textdomain(TEXT_DOMAIN);
222
223 while ((ch = getopt(argc, argv, "M:bcdf:him:")) != EOF) {
224 switch (ch) {
225
226 case 'M':
227 add_to_mlist(optarg, !dflg);
228 M_flg++;
229 break;
230
231 case 'b':
232 bflg++;
233 break;
234
235 case 'c':
236 cflg++;
237 break;
238
239 case 'd':
240 if (!dflg) {
241 default_magic();
242 add_to_mlist(dfile, 0);
243 dflg++;
244 }
245 break;
246
247 case 'f':
248 fflg++;
249 errno = 0;
250 if ((fl = fopen(optarg, "r")) == NULL) {
251 int err = errno;
252 (void) fprintf(stderr, gettext("%s: cannot "
253 "open file %s: %s\n"), File, optarg,
254 err ? strerror(err) : "");
255 usage();
256 }
257 pathlen = pathconf("/", _PC_PATH_MAX);
258 if (pathlen == -1) {
259 int err = errno;
260 (void) fprintf(stderr, gettext("%s: cannot "
261 "determine maximum path length: %s\n"),
262 File, strerror(err));
263 exit(1);
264 }
265 pathlen += 2; /* for null and newline in fgets */
266 if ((ap = malloc(pathlen * sizeof (char))) == NULL) {
267 int err = errno;
268 (void) fprintf(stderr, gettext("%s: malloc "
269 "failed: %s\n"), File, strerror(err));
270 exit(2);
271 }
272 break;
273
274 case 'h':
275 hflg++;
276 break;
277
278 case 'i':
279 iflg++;
280 break;
281
282 case 'm':
283 add_to_mlist(optarg, !dflg);
284 mflg++;
285 break;
286
287 case '?':
288 eflg++;
289 break;
290 }
291 }
292 if (!cflg && !fflg && (eflg || optind == argc))
293 usage();
294 if (iflg && (dflg || mflg || M_flg)) {
295 usage();
296 }
297 if ((iflg && cflg) || (cflg && bflg)) {
298 usage();
299 }
300
301 if (!dflg && !mflg && !M_flg && !iflg) {
302 /* no -d, -m, nor -M option; also -i option doesn't need magic */
303 default_magic();
304 if (f_mkmtab(dfile, cflg, 0) == -1) {
305 exit(2);
306 }
307 }
308
309 else if (mflg && !M_flg && !dflg) {
310 /* -m specified without -d nor -M */
311
312 #ifdef XPG4 /* For SUSv3 only */
313
314 /*
315 * The default position-dependent magic file tests
316 * in /etc/magic will follow all the -m magic tests.
317 */
318
319 for (filep = mlist1; filep < mlist1p; filep++) {
320 if (f_mkmtab(*filep, cflg, 1) == -1) {
321 exit(2);
322 }
323 }
324 default_magic();
325 if (f_mkmtab(dfile, cflg, 0) == -1) {
326 exit(2);
327 }
328 #else /* !XPG4 */
329 /*
330 * Retain Solaris file behavior for -m before SUSv3,
331 * when the new -d and -M options are not specified.
332 * Use the -m file specified in place of the default
333 * /etc/magic file. Solaris file will
334 * now allow more than one magic file to be specified
335 * with multiple -m options, for consistency with
336 * other behavior.
337 *
338 * Put the magic table(s) specified by -m into
339 * the second magic table instead of the first
340 * (as indicated by the last argument to f_mkmtab()),
341 * since they replace the /etc/magic tests and
342 * must be executed alongside the default
343 * position-sensitive tests.
344 */
345
346 for (filep = mlist1; filep < mlist1p; filep++) {
347 if (f_mkmtab(*filep, cflg, 0) == -1) {
348 exit(2);
349 }
350 }
351 #endif /* XPG4 */
352 } else {
353 /*
354 * For any other combination of -d, -m, and -M,
355 * use the magic files in command-line order.
356 * Store the entries from the two separate lists of magic
357 * files, if any, into two separate magic file tables.
358 * mlist1: magic tests executed before default magic tests
359 * mlist2: default magic tests and after
360 */
361 for (filep = mlist1; filep && (filep < mlist1p); filep++) {
362 if (f_mkmtab(*filep, cflg, 1) == -1) {
363 exit(2);
364 }
365 }
366 for (filep = mlist2; filep && (filep < mlist2p); filep++) {
367 if (f_mkmtab(*filep, cflg, 0) == -1) {
368 exit(2);
369 }
370 }
371 }
372
373 /* Initialize the magic file variables; check both magic tables */
374 tmpmax = f_getmaxoffset(1);
375 maxmagicoffset = f_getmaxoffset(0);
376 if (maxmagicoffset < tmpmax) {
377 maxmagicoffset = tmpmax;
378 }
379 if (maxmagicoffset < (intmax_t)FBSZ)
380 maxmagicoffset = (intmax_t)FBSZ;
381 if ((magicbuf = malloc(maxmagicoffset)) == NULL) {
382 int err = errno;
383 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
384 File, strerror(err));
385 exit(2);
386 }
387
388 if (cflg) {
389 f_prtmtab();
390 if (ferror(stdout) != 0) {
391 (void) fprintf(stderr, gettext("%s: error writing to "
392 "stdout\n"), File);
393 exit(1);
394 }
395 if (fclose(stdout) != 0) {
396 int err = errno;
397 (void) fprintf(stderr, gettext("%s: fclose "
398 "failed: %s\n"), File, strerror(err));
399 exit(1);
400 }
401 exit(0);
402 }
403
404 for (; fflg || optind < argc; optind += !fflg) {
405 register int l;
406
407 if (fflg) {
408 if ((p = fgets(ap, pathlen, fl)) == NULL) {
409 fflg = 0;
410 optind--;
411 continue;
412 }
413 l = strlen(p);
414 if (l > 0)
415 p[l - 1] = '\0';
416 } else
417 p = argv[optind];
418
419 if (!bflg)
420 prf(p); /* print "file_name:<tab>" */
421
422 if (type(p))
423 tret = 1;
424 }
425 if (ap != NULL)
426 free(ap);
427 if (tret != 0)
428 exit(tret);
429
430 if (ferror(stdout) != 0) {
431 (void) fprintf(stderr, gettext("%s: error writing to "
432 "stdout\n"), File);
433 exit(1);
434 }
435 if (fclose(stdout) != 0) {
436 int err = errno;
437 (void) fprintf(stderr, gettext("%s: fclose failed: %s\n"),
438 File, strerror(err));
439 exit(1);
440 }
441 return (0);
442 }
443
444 static int
445 type(char *file)
446 {
447 int cc;
448 char buf[BUFSIZ];
449 int (*statf)() = hflg ? lstat64 : stat64;
450
451 i = 0; /* reset index to beginning of file */
452 ifd = -1;
453 if ((*statf)(file, &mbuf) < 0) {
454 if (statf == lstat64 || lstat64(file, &mbuf) < 0) {
455 int err = errno;
456 (void) printf(gettext("cannot open: %s\n"),
457 strerror(err));
458 return (0); /* POSIX.2 */
459 }
460 }
461 switch (mbuf.st_mode & S_IFMT) {
462 case S_IFREG:
463 if (iflg) {
464 (void) printf(gettext("regular file\n"));
465 return (0);
466 }
467 break;
468 case S_IFCHR:
469 (void) printf(gettext("character"));
470 goto spcl;
471
472 case S_IFDIR:
473 (void) printf(gettext("directory\n"));
474 return (0);
475
476 case S_IFIFO:
477 (void) printf(gettext("fifo\n"));
478 return (0);
479
480 case S_IFLNK:
481 if ((cc = readlink(file, buf, BUFSIZ)) < 0) {
482 int err = errno;
483 (void) printf(gettext("readlink error: %s\n"),
484 strerror(err));
485 return (1);
486 }
487 buf[cc] = '\0';
488 (void) printf(gettext("symbolic link to %s\n"), buf);
489 return (0);
490
491 case S_IFBLK:
492 (void) printf(gettext("block"));
493 /* major and minor, see sys/mkdev.h */
494 spcl:
495 (void) printf(gettext(" special (%d/%d)\n"),
496 major(mbuf.st_rdev), minor(mbuf.st_rdev));
497 return (0);
498
499 case S_IFSOCK:
500 (void) printf("socket\n");
501 /* FIXME, should open and try to getsockname. */
502 return (0);
503
504 case S_IFDOOR:
505 if (get_door_target(file, buf, sizeof (buf)) == 0)
506 (void) printf(gettext("door to %s\n"), buf);
507 else
508 (void) printf(gettext("door\n"));
509 return (0);
510
511 }
512
513 if (elf_version(EV_CURRENT) == EV_NONE) {
514 (void) printf(gettext("libelf is out of date\n"));
515 return (1);
516 }
517
518 ifd = open64(file, O_RDONLY);
519 if (ifd < 0) {
520 int err = errno;
521 (void) printf(gettext("cannot open: %s\n"), strerror(err));
522 return (0); /* POSIX.2 */
523 }
524
525 /* need another fd for elf, since we might want to read the file too */
526 elffd = open64(file, O_RDONLY);
527 if (elffd < 0) {
528 int err = errno;
529 (void) printf(gettext("cannot open: %s\n"), strerror(err));
530 (void) close(ifd);
531 ifd = -1;
532 return (0); /* POSIX.2 */
533 }
534 if ((fbsz = read(ifd, fbuf, FBSZ)) == -1) {
535 int err = errno;
536 (void) printf(gettext("cannot read: %s\n"), strerror(err));
537 (void) close(ifd);
538 ifd = -1;
539 return (0); /* POSIX.2 */
540 }
541 if (fbsz == 0) {
542 (void) printf(gettext("empty file\n"));
543 fd_cleanup();
544 return (0);
545 }
546
547 /*
548 * First try user-specified position-dependent magic tests, if any,
549 * which need to execute before the default tests.
550 */
551 if ((mread = pread(ifd, (void*)magicbuf, (size_t)maxmagicoffset,
552 (off_t)0)) == -1) {
553 int err = errno;
554 (void) printf(gettext("cannot read: %s\n"), strerror(err));
555 fd_cleanup();
556 return (0);
557 }
558
559 /*
560 * ChecK against Magic Table entries.
561 * Check first magic table for magic tests to be applied
562 * before default tests.
563 * If no default tests are to be applied, all magic tests
564 * should occur in this magic table.
565 */
566 switch (f_ckmtab(magicbuf, mread, 1)) {
567 case -1: /* Error */
568 exit(2);
569 break;
570 case 0: /* Not magic */
571 break;
572 default: /* Switch is magic index */
573 (void) putchar('\n');
574 fd_cleanup();
575 return (0);
576 /* NOTREACHED */
577 break;
578 }
579
580 if (dflg || !M_flg) {
581 /*
582 * default position-dependent tests,
583 * plus non-default magic tests, if any
584 */
585 switch (def_position_tests(file)) {
586 case -1: /* error */
587 fd_cleanup();
588 return (1);
589 case 1: /* matching type found */
590 fd_cleanup();
591 return (0);
592 /* NOTREACHED */
593 break;
594 case 0: /* no matching type found */
595 break;
596 }
597 /* default context-sensitive tests */
598 def_context_tests();
599 } else {
600 /* no more tests to apply; no match was found */
601 (void) printf(gettext("data\n"));
602 }
603 fd_cleanup();
604 return (0);
605 }
606
607 /*
608 * def_position_tests() - applies default position-sensitive tests,
609 * looking for values in specific positions in the file.
610 * These are followed by default (followed by possibly some
611 * non-default) magic file tests.
612 *
613 * All position-sensitive tests, default or otherwise, must
614 * be applied before context-sensitive tests, to avoid
615 * false context-sensitive matches.
616 *
617 * Returns -1 on error which should result in error (non-zero)
618 * exit status for the file utility.
619 * Returns 0 if no matching file type found.
620 * Returns 1 if matching file type found.
621 */
622
623 static int
624 def_position_tests(char *file)
625 {
626 if (sccs()) { /* look for "1hddddd" where d is a digit */
627 (void) printf("sccs \n");
628 return (1);
629 }
630 if (fbuf[0] == '#' && fbuf[1] == '!' && shellscript(fbuf+2, &mbuf))
631 return (1);
632
633 if (elf_check(file) == 0) {
634 (void) putchar('\n');
635 return (1);
636 /* LINTED: pointer cast may result in improper alignment */
637 } else if (*(int *)fbuf == CORE_MAGIC) {
638 /* LINTED: pointer cast may result in improper alignment */
639 struct core *corep = (struct core *)fbuf;
640
641 (void) printf("a.out core file");
642
643 if (*(corep->c_cmdname) != '\0')
644 (void) printf(" from '%s'", corep->c_cmdname);
645 (void) putchar('\n');
646 return (1);
647 }
648
649 /*
650 * Runtime linker (ld.so.1) configuration file.
651 */
652 if (is_rtld_config())
653 return (1);
654
655 /*
656 * ZIP files, JAR files, and Java executables
657 */
658 if (zipfile(fbuf, ifd))
659 return (1);
660
661 if (is_crash_dump(fbuf, ifd))
662 return (1);
663
664 /*
665 * ChecK against Magic Table entries.
666 * The magic entries checked here always start with default
667 * magic tests and may be followed by other, non-default magic
668 * tests. If no default tests are to be executed, all the
669 * magic tests should have been in the first magic table.
670 */
671 switch (f_ckmtab(magicbuf, mread, 0)) {
672 case -1: /* Error */
673 exit(2);
674 break;
675 case 0: /* Not magic */
676 return (0);
677 /* NOTREACHED */
678 break;
679 default: /* Switch is magic index */
680
681 /*
682 * f_ckmtab recognizes file type,
683 * check if it is PostScript.
684 * if not, check if elf or a.out
685 */
686 if (magicbuf[0] == '%' && magicbuf[1] == '!') {
687 (void) putchar('\n');
688 } else {
689
690 /*
691 * Check that the file is executable (dynamic
692 * objects must be executable to be exec'ed,
693 * shared objects need not be, but by convention
694 * should be executable).
695 *
696 * Note that we should already have processed
697 * the file if it was an ELF file.
698 */
699 ar_coff_or_aout(elffd);
700 (void) putchar('\n');
701 }
702 return (1);
703 /* NOTREACHED */
704 break;
705 }
706
707 return (0); /* file was not identified */
708 }
709
710 /*
711 * def_context_tests() - default context-sensitive tests.
712 * These are the last tests to be applied.
713 * If no match is found, prints out "data".
714 */
715
716 static void
717 def_context_tests(void)
718 {
719 int j;
720 int nl;
721 char ch;
722 int len;
723
724 if (ccom() == 0)
725 goto notc;
726 while (fbuf[i] == '#') {
727 j = i;
728 while (fbuf[i++] != '\n') {
729 if (i - j > 255) {
730 (void) printf(gettext("data\n"));
731 return;
732 }
733 if (i >= fbsz)
734 goto notc;
735 }
736 if (ccom() == 0)
737 goto notc;
738 }
739 check:
740 if (lookup(c) == 1) {
741 while ((ch = fbuf[i]) != ';' && ch != '{') {
742 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
743 len = 1;
744 i += len;
745 if (i >= fbsz)
746 goto notc;
747 }
748 (void) printf(gettext("c program text"));
749 goto outa;
750 }
751 nl = 0;
752 while (fbuf[i] != '(') {
753 if (fbuf[i] <= 0)
754 goto notas;
755 if (fbuf[i] == ';') {
756 i++;
757 goto check;
758 }
759 if (fbuf[i++] == '\n')
760 if (nl++ > 6)
761 goto notc;
762 if (i >= fbsz)
763 goto notc;
764 }
765 while (fbuf[i] != ')') {
766 if (fbuf[i++] == '\n')
767 if (nl++ > 6)
768 goto notc;
769 if (i >= fbsz)
770 goto notc;
771 }
772 while (fbuf[i] != '{') {
773 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
774 len = 1;
775 if (fbuf[i] == '\n')
776 if (nl++ > 6)
777 goto notc;
778 i += len;
779 if (i >= fbsz)
780 goto notc;
781 }
782 (void) printf(gettext("c program text"));
783 goto outa;
784 notc:
785 i = 0; /* reset to begining of file again */
786 while (fbuf[i] == 'c' || fbuf[i] == 'C'|| fbuf[i] == '!' ||
787 fbuf[i] == '*' || fbuf[i] == '\n') {
788 while (fbuf[i++] != '\n')
789 if (i >= fbsz)
790 goto notfort;
791 }
792 if (lookup(fort) == 1) {
793 (void) printf(gettext("fortran program text"));
794 goto outa;
795 }
796 notfort: /* looking for assembler program */
797 i = 0; /* reset to beginning of file again */
798 if (ccom() == 0) /* assembler programs may contain */
799 /* c-style comments */
800 goto notas;
801 if (ascom() == 0)
802 goto notas;
803 j = i - 1;
804 if (fbuf[i] == '.') {
805 i++;
806 if (lookup(as) == 1) {
807 (void) printf(gettext("assembler program text"));
808 goto outa;
809 } else if (j != -1 && fbuf[j] == '\n' && isalpha(fbuf[j + 2])) {
810 (void) printf(
811 gettext("[nt]roff, tbl, or eqn input text"));
812 goto outa;
813 }
814 }
815 while (lookup(asc) == 0) {
816 if (ccom() == 0)
817 goto notas;
818 if (ascom() == 0)
819 goto notas;
820 while (fbuf[i] != '\n' && fbuf[i++] != ':') {
821 if (i >= fbsz)
822 goto notas;
823 }
824 while (fbuf[i] == '\n' || fbuf[i] == ' ' || fbuf[i] == '\t')
825 if (i++ >= fbsz)
826 goto notas;
827 j = i - 1;
828 if (fbuf[i] == '.') {
829 i++;
830 if (lookup(as) == 1) {
831 (void) printf(
832 gettext("assembler program text"));
833 goto outa;
834 } else if (fbuf[j] == '\n' && isalpha(fbuf[j+2])) {
835 (void) printf(
836 gettext("[nt]roff, tbl, or eqn input "
837 "text"));
838 goto outa;
839 }
840 }
841 }
842 (void) printf(gettext("assembler program text"));
843 goto outa;
844 notas:
845 /* start modification for multibyte env */
846 IS_ascii = 1;
847 if (fbsz < FBSZ)
848 Max = fbsz;
849 else
850 Max = FBSZ - MB_LEN_MAX; /* prevent cut of wchar read */
851 /* end modification for multibyte env */
852
853 for (i = 0; i < Max; /* null */)
854 if (fbuf[i] & 0200) {
855 IS_ascii = 0;
856 if (fbuf[0] == '\100' && fbuf[1] == '\357') {
857 (void) printf(gettext("troff output\n"));
858 return;
859 }
860 /* start modification for multibyte env */
861 if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))
862 <= 0 || !iswprint(wchar)) {
863 (void) printf(gettext("data\n"));
864 return;
865 }
866 i += length;
867 }
868 else
869 i++;
870 i = fbsz;
871 /* end modification for multibyte env */
872 if (mbuf.st_mode&(S_IXUSR|S_IXGRP|S_IXOTH))
873 (void) printf(gettext("commands text"));
874 else if (troffint(fbuf, fbsz))
875 (void) printf(gettext("troff intermediate output text"));
876 else if (english(fbuf, fbsz))
877 (void) printf(gettext("English text"));
878 else if (IS_ascii)
879 (void) printf(gettext("ascii text"));
880 else
881 (void) printf(gettext("text")); /* for multibyte env */
882 outa:
883 /*
884 * This code is to make sure that no MB char is cut in half
885 * while still being used.
886 */
887 fbsz = (fbsz < FBSZ ? fbsz : fbsz - MB_CUR_MAX + 1);
888 while (i < fbsz) {
889 if (isascii(fbuf[i])) {
890 i++;
891 continue;
892 } else {
893 if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))
894 <= 0 || !iswprint(wchar)) {
895 (void) printf(gettext(" with garbage\n"));
896 return;
897 }
898 i = i + length;
899 }
900 }
901 (void) printf("\n");
902 }
903
904 static int
905 troffint(char *bp, int n)
906 {
907 int k;
908
909 i = 0;
910 for (k = 0; k < 6; k++) {
911 if (lookup(troff) == 0)
912 return (0);
913 if (lookup(troff) == 0)
914 return (0);
915 while (i < n && bp[i] != '\n')
916 i++;
917 if (i++ >= n)
918 return (0);
919 }
920 return (1);
921 }
922
923 static void
924 ar_coff_or_aout(int elffd)
925 {
926 Elf *elf;
927
928 /*
929 * Get the files elf descriptor and process it as an elf or
930 * a.out (4.x) file.
931 */
932
933 elf = elf_begin(elffd, ELF_C_READ, (Elf *)0);
934 switch (elf_kind(elf)) {
935 case ELF_K_AR :
936 (void) printf(gettext(", not a dynamic executable "
937 "or shared object"));
938 break;
939 case ELF_K_COFF:
940 (void) printf(gettext(", unsupported or unknown "
941 "file type"));
942 break;
943 default:
944 /*
945 * This is either an unknown file or an aout format
946 * At this time, we don't print dynamic/stripped
947 * info. on a.out or non-Elf binaries.
948 */
949 break;
950 }
951 (void) elf_end(elf);
952 }
953
954
955 static void
956 print_elf_type(Elf_Info EI)
957 {
958 switch (EI.type) {
959 case ET_NONE:
960 (void) printf(" %s", gettext("unknown type"));
961 break;
962 case ET_REL:
963 (void) printf(" %s", gettext("relocatable"));
964 break;
965 case ET_EXEC:
966 (void) printf(" %s", gettext("executable"));
967 break;
968 case ET_DYN:
969 (void) printf(" %s", gettext("dynamic lib"));
970 break;
971 default:
972 break;
973 }
974 }
975
976 static void
977 print_elf_machine(int machine)
978 {
979 /*
980 * This table must be kept in sync with the EM_ constants
981 * in /usr/include/sys/elf.h.
982 */
983 static const char *mach_str[EM_NUM] = {
984 [EM_NONE] = "unknown machine",
985 [EM_M32] = "WE32100",
986 [EM_SPARC] = "SPARC",
987 [EM_386] = "80386",
988 [EM_68K] = "M68000",
989 [EM_88K] = "M88000",
990 [EM_486] = "80486",
991 [EM_860] = "i860",
992 [EM_MIPS] = "MIPS RS3000 Big-Endian",
993 [EM_S370] = "S/370",
994 [EM_MIPS_RS3_LE] = "MIPS RS3000 Little-Endian",
995 [EM_RS6000] = "MIPS RS6000",
996 [EM_PA_RISC] = "PA-RISC",
997 [EM_nCUBE] = "nCUBE",
998 [EM_VPP500] = "VPP500",
999 [EM_SPARC32PLUS] = "SPARC32PLUS",
1000 [EM_960] = "i960",
1001 [EM_PPC] = "PowerPC",
1002 [EM_PPC64] = "PowerPC64",
1003 [EM_S390] = "S/390",
1004 [EM_V800] = "V800",
1005 [EM_FR20] = "FR20",
1006 [EM_RH32] = "RH32",
1007 [EM_RCE] = "RCE",
1008 [EM_ARM] = "ARM",
1009 [EM_ALPHA] = "Alpha",
1010 [EM_SH] = "S/390",
1011 [EM_SPARCV9] = "SPARCV9",
1012 [EM_TRICORE] = "Tricore",
1013 [EM_ARC] = "ARC",
1014 [EM_H8_300] = "H8/300",
1015 [EM_H8_300H] = "H8/300H",
1016 [EM_H8S] = "H8S",
1017 [EM_H8_500] = "H8/500",
1018 [EM_IA_64] = "IA64",
1019 [EM_MIPS_X] = "MIPS-X",
1020 [EM_COLDFIRE] = "Coldfire",
1021 [EM_68HC12] = "M68HC12",
1022 [EM_MMA] = "MMA",
1023 [EM_PCP] = "PCP",
1024 [EM_NCPU] = "nCPU",
1025 [EM_NDR1] = "NDR1",
1026 [EM_STARCORE] = "Starcore",
1027 [EM_ME16] = "ME16",
1028 [EM_ST100] = "ST100",
1029 [EM_TINYJ] = "TINYJ",
1030 [EM_AMD64] = "AMD64",
1031 [EM_PDSP] = "PDSP",
1032 [EM_FX66] = "FX66",
1033 [EM_ST9PLUS] = "ST9 PLUS",
1034 [EM_ST7] = "ST7",
1035 [EM_68HC16] = "68HC16",
1036 [EM_68HC11] = "68HC11",
1037 [EM_68HC08] = "68H08",
1038 [EM_68HC05] = "68HC05",
1039 [EM_SVX] = "SVX",
1040 [EM_ST19] = "ST19",
1041 [EM_VAX] = "VAX",
1042 [EM_CRIS] = "CRIS",
1043 [EM_JAVELIN] = "Javelin",
1044 [EM_FIREPATH] = "Firepath",
1045 [EM_ZSP] = "ZSP",
1046 [EM_MMIX] = "MMIX",
1047 [EM_HUANY] = "HUANY",
1048 [EM_PRISM] = "Prism",
1049 [EM_AVR] = "AVR",
1050 [EM_FR30] = "FR30",
1051 [EM_D10V] = "D10V",
1052 [EM_D30V] = "D30V",
1053 [EM_V850] = "V850",
1054 [EM_M32R] = "M32R",
1055 [EM_MN10300] = "MN10300",
1056 [EM_MN10200] = "MN10200",
1057 [EM_PJ] = "picoJava",
1058 [EM_OPENRISC] = "OpenRISC",
1059 [EM_ARC_A5] = "Tangent-A5",
1060 [EM_XTENSA] = "Xtensa",
1061
1062 [EM_VIDEOCORE] = "Videocore",
1063 [EM_TMM_GPP] = "TMM_GPP",
1064 [EM_NS32K] = "NS32K",
1065 [EM_TPC] = "TPC",
1066 [EM_SNP1K] = "SNP1K",
1067 [EM_ST200] = "ST200",
1068 [EM_IP2K] = "IP2K",
1069 [EM_MAX] = "MAX",
1070 [EM_CR] = "CompactRISC",
1071 [EM_F2MC16] = "F2MC16",
1072 [EM_MSP430] = "MSP430",
1073 [EM_BLACKFIN] = "Blackfin",
1074 [EM_SE_C33] = "S1C33",
1075 [EM_SEP] = "SEP",
1076 [EM_ARCA] = "Arca",
1077 [EM_UNICORE] = "Unicore",
1078 [EM_EXCESS] = "eXcess",
1079 [EM_DXP] = "DXP",
1080 [EM_ALTERA_NIOS2] = "Nios 2",
1081 [EM_CRX] = "CompactRISC CRX",
1082 [EM_XGATE] = "XGATE",
1083 [EM_C166] = "C16x/XC16x",
1084 [EM_M16C] = "M16C",
1085 [EM_DSPIC30F] = "dsPIC30F",
1086 [EM_CE] = "CE RISC",
1087 [EM_M32C] = "M32C",
1088 [EM_TSK3000] = "TSK3000",
1089 [EM_RS08] = "RS08",
1090 [EM_SHARC] = "SHARC",
1091 [EM_ECOG2] = "eCOG2",
1092 [EM_SCORE7] = "SCORE7",
1093 [EM_DSP24] = "DSP24",
1094 [EM_VIDEOCORE3] = "Videocore III",
1095 [EM_LATTICEMICO32] = "LATTICEMICO32",
1096 [EM_SE_C17] = "SE_C17",
1097 [EM_TI_C6000] = "TMS320C6000",
1098 [EM_TI_C2000] = "TMS320C2000",
1099 [EM_TI_C5500] = "TMS320C55x",
1100 [EM_TI_ARP32] = "ASRP32",
1101 [EM_TI_PRU] = "TI_PRU",
1102 [EM_MMDSP_PLUS] = "MMDSP_PLUS",
1103 [EM_CYPRESS_M8C] = "M8C",
1104 [EM_R32C] = "R32C",
1105 [EM_TRIMEDIA] = "TriMedia",
1106 [EM_QDSP6] = "QDSP6",
1107 [EM_8051] = "8051",
1108 [EM_STXP7X] = "STxP7x",
1109 [EM_NDS32] = "NDS32",
1110 [EM_ECOG1] = "eCOG1X",
1111 [EM_MAXQ30] = "MAXQ30",
1112 [EM_XIMO16] = "XIMO16",
1113 [EM_MANIK] = "M2000",
1114 [EM_CRAYNV2] = "CRAYNV2",
1115 [EM_RX] = "RX",
1116 [EM_METAG] = "METAG",
1117 [EM_MCST_ELBRUS] = "Elbrus",
1118 [EM_ECOG16] = "eCOG16",
1119 [EM_CR16] = "CR16",
1120 [EM_ETPU] = "ETPU",
1121 [EM_SLE9X] = "SLE9X",
1122 [EM_L10M] = "L10M",
1123 [EM_K10M] = "K10M",
1124
1125 [EM_AARCH64] = "aarch64",
1126
1127 [EM_AVR32] = "AVR32",
1128 [EM_STM8] = "STM8",
1129 [EM_TILE64] = "TILE64",
1130 [EM_TILEPRO] = "TILEPRO",
1131 [EM_MICROBLAZE] = "MicroBlaze",
1132 [EM_CUDA] = "CUDA",
1133 [EM_TILEGX] = "TILE-Gx",
1134 [EM_CLOUDSHIELD] = "CloudShield",
1135 [EM_COREA_1ST] = "CORE-A 1st",
1136 [EM_COREA_2ND] = "CORE-A 2nd",
1137 [EM_ARC_COMPACT2] = "ARCompact V2",
1138 [EM_OPEN8] = "Open8",
1139 [EM_RL78] = "RL78",
1140 [EM_VIDEOCORE5] = "VideoCore V",
1141 [EM_78KOR] = "78KOR",
1142 [EM_56800EX] = "56800EX",
1143 [EM_BA1] = "BA1",
1144 [EM_BA2] = "BA2",
1145 [EM_XCORE] = "xCORE",
1146 [EM_MCHP_PIC] = "MCHP_PIC",
1147 [EM_KM32] = "KM32",
1148 [EM_KMX32] = "KMX32",
1149 [EM_KMX16] = "KMX16",
1150 [EM_KMX8] = "KMX8",
1151 [EM_KVARC] = "KVARC",
1152 [EM_CDP] = "CDP",
1153 [EM_COGE] = "COGE",
1154 [EM_COOL] = "CoolEngine",
1155 [EM_NORC] = "NORC",
1156 [EM_CSR_KALIMBA] = "Kalimba",
1157 [EM_Z80] = "Zilog Z80",
1158 [EM_VISIUM] = "VISIUMcore",
1159 [EM_FT32] = "FT32",
1160 [EM_MOXIE] = "Moxie",
1161 [EM_AMDGPU] = "AMD GPU",
1162 [EM_RISCV] = "RISC-V"
1163 };
1164 /* If new machine is added, refuse to compile until we're updated */
1165 #if EM_NUM != 244
1166 #error "Number of known ELF machine constants has changed"
1167 #endif
1168
1169 const char *str;
1170
1171 if ((machine < EM_NONE) || (machine >= EM_NUM))
1172 machine = EM_NONE;
1173
1174 str = mach_str[machine];
1175 if (str)
1176 (void) printf(" %s", str);
1177 }
1178
1179 static void
1180 print_elf_datatype(int datatype)
1181 {
1182 switch (datatype) {
1183 case ELFDATA2LSB:
1184 (void) printf(" LSB");
1185 break;
1186 case ELFDATA2MSB:
1187 (void) printf(" MSB");
1188 break;
1189 default:
1190 break;
1191 }
1192 }
1193
1194 static void
1195 print_elf_class(int class)
1196 {
1197 switch (class) {
1198 case ELFCLASS32:
1199 (void) printf(" %s", gettext("32-bit"));
1200 break;
1201 case ELFCLASS64:
1202 (void) printf(" %s", gettext("64-bit"));
1203 break;
1204 default:
1205 break;
1206 }
1207 }
1208
1209 static void
1210 print_elf_flags(Elf_Info EI)
1211 {
1212 unsigned int flags;
1213
1214 flags = EI.flags;
1215 switch (EI.machine) {
1216 case EM_SPARCV9:
1217 if (flags & EF_SPARC_EXT_MASK) {
1218 if (flags & EF_SPARC_SUN_US3) {
1219 (void) printf("%s", gettext(
1220 ", UltraSPARC3 Extensions Required"));
1221 } else if (flags & EF_SPARC_SUN_US1) {
1222 (void) printf("%s", gettext(
1223 ", UltraSPARC1 Extensions Required"));
1224 }
1225 if (flags & EF_SPARC_HAL_R1)
1226 (void) printf("%s", gettext(
1227 ", HaL R1 Extensions Required"));
1228 }
1229 break;
1230 case EM_SPARC32PLUS:
1231 if (flags & EF_SPARC_32PLUS)
1232 (void) printf("%s", gettext(", V8+ Required"));
1233 if (flags & EF_SPARC_SUN_US3) {
1234 (void) printf("%s",
1235 gettext(", UltraSPARC3 Extensions Required"));
1236 } else if (flags & EF_SPARC_SUN_US1) {
1237 (void) printf("%s",
1238 gettext(", UltraSPARC1 Extensions Required"));
1239 }
1240 if (flags & EF_SPARC_HAL_R1)
1241 (void) printf("%s",
1242 gettext(", HaL R1 Extensions Required"));
1243 break;
1244 default:
1245 break;
1246 }
1247 }
1248
1249 /*
1250 * check_ident: checks the ident field of the presumeably
1251 * elf file. If check fails, this is not an
1252 * elf file.
1253 */
1254 static int
1255 check_ident(unsigned char *ident, int fd)
1256 {
1257 int class;
1258 if (pread64(fd, ident, EI_NIDENT, 0) != EI_NIDENT)
1259 return (ELF_READ_FAIL);
1260 class = ident[EI_CLASS];
1261 if (class != ELFCLASS32 && class != ELFCLASS64)
1262 return (ELF_READ_FAIL);
1263 if (ident[EI_MAG0] != ELFMAG0 || ident[EI_MAG1] != ELFMAG1 ||
1264 ident[EI_MAG2] != ELFMAG2 || ident[EI_MAG3] != ELFMAG3)
1265 return (ELF_READ_FAIL);
1266
1267 return (ELF_READ_OKAY);
1268 }
1269
1270 static int
1271 elf_check(char *file)
1272 {
1273 Elf_Info EInfo;
1274 int class, version, format;
1275 unsigned char ident[EI_NIDENT];
1276
1277 (void) memset(&EInfo, 0, sizeof (Elf_Info));
1278 EInfo.file = file;
1279
1280 /*
1281 * Verify information in file indentifier.
1282 * Return quietly if not elf; Different type of file.
1283 */
1284 if (check_ident(ident, elffd) == ELF_READ_FAIL)
1285 return (1);
1286
1287 /*
1288 * Read the elf headers for processing and get the
1289 * get the needed information in Elf_Info struct.
1290 */
1291 class = ident[EI_CLASS];
1292 if (class == ELFCLASS32) {
1293 if (elf_read32(elffd, &EInfo) == ELF_READ_FAIL) {
1294 (void) fprintf(stderr, gettext("%s: %s: can't "
1295 "read ELF header\n"), File, file);
1296 return (1);
1297 }
1298 } else if (class == ELFCLASS64) {
1299 if (elf_read64(elffd, &EInfo) == ELF_READ_FAIL) {
1300 (void) fprintf(stderr, gettext("%s: %s: can't "
1301 "read ELF header\n"), File, file);
1302 return (1);
1303 }
1304 } else {
1305 /* something wrong */
1306 return (1);
1307 }
1308
1309 /* version not in ident then 1 */
1310 version = ident[EI_VERSION] ? ident[EI_VERSION] : 1;
1311
1312 format = ident[EI_DATA];
1313 (void) printf("%s", gettext("ELF"));
1314 print_elf_class(class);
1315 print_elf_datatype(format);
1316 print_elf_type(EInfo);
1317
1318 if (EInfo.core_type != EC_NOTCORE) {
1319 /* Print what kind of core is this */
1320 if (EInfo.core_type == EC_OLDCORE)
1321 (void) printf(" %s", gettext("pre-2.6 core file"));
1322 else
1323 (void) printf(" %s", gettext("core file"));
1324 }
1325
1326 /* Print machine info */
1327 print_elf_machine(EInfo.machine);
1328
1329 /* Print Version */
1330 if (version == 1)
1331 (void) printf(" %s %d", gettext("Version"), version);
1332
1333 /* Print Flags */
1334 print_elf_flags(EInfo);
1335
1336 /* Last bit, if it is a core */
1337 if (EInfo.core_type != EC_NOTCORE) {
1338 /* Print the program name that dumped this core */
1339 (void) printf(gettext(", from '%s'"), EInfo.fname);
1340 return (0);
1341 }
1342
1343 /* Print Capabilities */
1344 if (EInfo.cap_str[0] != '\0')
1345 (void) printf(" [%s]", EInfo.cap_str);
1346
1347 if ((EInfo.type != ET_EXEC) && (EInfo.type != ET_DYN))
1348 return (0);
1349
1350 /* Print if it is dynamically linked */
1351 if (EInfo.dynamic)
1352 (void) printf(gettext(", dynamically linked"));
1353 else
1354 (void) printf(gettext(", statically linked"));
1355
1356 /* Printf it it is stripped */
1357 if (EInfo.stripped & E_SYMTAB) {
1358 (void) printf(gettext(", not stripped"));
1359 if (!(EInfo.stripped & E_DBGINF)) {
1360 (void) printf(gettext(
1361 ", no debugging information available"));
1362 }
1363 } else {
1364 (void) printf(gettext(", stripped"));
1365 }
1366
1367 return (0);
1368 }
1369
1370 /*
1371 * is_rtld_config - If file is a runtime linker config file, prints
1372 * the description and returns True (1). Otherwise, silently returns
1373 * False (0).
1374 */
1375 int
1376 is_rtld_config(void)
1377 {
1378 Rtc_id *id;
1379
1380 if ((fbsz >= sizeof (*id)) && RTC_ID_TEST(fbuf)) {
1381 (void) printf(gettext("Runtime Linking Configuration"));
1382 id = (Rtc_id *) fbuf;
1383 print_elf_class(id->id_class);
1384 print_elf_datatype(id->id_data);
1385 print_elf_machine(id->id_machine);
1386 (void) printf("\n");
1387 return (1);
1388 }
1389
1390 return (0);
1391 }
1392
1393 /*
1394 * lookup -
1395 * Attempts to match one of the strings from a list, 'tab',
1396 * with what is in the file, starting at the current index position 'i'.
1397 * Looks past any initial whitespace and expects whitespace or other
1398 * delimiting characters to follow the matched string.
1399 * A match identifies the file as being 'assembler', 'fortran', 'c', etc.
1400 * Returns 1 for a successful match, 0 otherwise.
1401 */
1402 static int
1403 lookup(char **tab)
1404 {
1405 register char r;
1406 register int k, j, l;
1407
1408 while (fbuf[i] == ' ' || fbuf[i] == '\t' || fbuf[i] == '\n')
1409 i++;
1410 for (j = 0; tab[j] != 0; j++) {
1411 l = 0;
1412 for (k = i; ((r = tab[j][l++]) == fbuf[k] && r != '\0'); k++)
1413 ;
1414 if (r == '\0')
1415 if (fbuf[k] == ' ' || fbuf[k] == '\n' ||
1416 fbuf[k] == '\t' || fbuf[k] == '{' ||
1417 fbuf[k] == '/') {
1418 i = k;
1419 return (1);
1420 }
1421 }
1422 return (0);
1423 }
1424
1425 /*
1426 * ccom -
1427 * Increments the current index 'i' into the file buffer 'fbuf' past any
1428 * whitespace lines and C-style comments found, starting at the current
1429 * position of 'i'. Returns 1 as long as we don't increment i past the
1430 * size of fbuf (fbsz). Otherwise, returns 0.
1431 */
1432
1433 static int
1434 ccom(void)
1435 {
1436 register char cc;
1437 int len;
1438
1439 while ((cc = fbuf[i]) == ' ' || cc == '\t' || cc == '\n')
1440 if (i++ >= fbsz)
1441 return (0);
1442 if (fbuf[i] == '/' && fbuf[i+1] == '*') {
1443 i += 2;
1444 while (fbuf[i] != '*' || fbuf[i+1] != '/') {
1445 if (fbuf[i] == '\\')
1446 i++;
1447 if ((len = mblen(&fbuf[i], MB_CUR_MAX)) <= 0)
1448 len = 1;
1449 i += len;
1450 if (i >= fbsz)
1451 return (0);
1452 }
1453 if ((i += 2) >= fbsz)
1454 return (0);
1455 }
1456 if (fbuf[i] == '\n')
1457 if (ccom() == 0)
1458 return (0);
1459 return (1);
1460 }
1461
1462 /*
1463 * ascom -
1464 * Increments the current index 'i' into the file buffer 'fbuf' past
1465 * consecutive assembler program comment lines starting with ASCOMCHAR,
1466 * starting at the current position of 'i'.
1467 * Returns 1 as long as we don't increment i past the
1468 * size of fbuf (fbsz). Otherwise returns 0.
1469 */
1470
1471 static int
1472 ascom(void)
1473 {
1474 while (fbuf[i] == ASCOMCHAR) {
1475 i++;
1476 while (fbuf[i++] != '\n')
1477 if (i >= fbsz)
1478 return (0);
1479 while (fbuf[i] == '\n')
1480 if (i++ >= fbsz)
1481 return (0);
1482 }
1483 return (1);
1484 }
1485
1486 static int
1487 sccs(void)
1488 { /* look for "1hddddd" where d is a digit */
1489 register int j;
1490
1491 if (fbuf[0] == 1 && fbuf[1] == 'h') {
1492 for (j = 2; j <= 6; j++) {
1493 if (isdigit(fbuf[j]))
1494 continue;
1495 else
1496 return (0);
1497 }
1498 } else {
1499 return (0);
1500 }
1501 return (1);
1502 }
1503
1504 static int
1505 english(char *bp, int n)
1506 {
1507 #define NASC 128 /* number of ascii char ?? */
1508 register int j, vow, freq, rare, len;
1509 register int badpun = 0, punct = 0;
1510 int ct[NASC];
1511
1512 if (n < 50)
1513 return (0); /* no point in statistics on squibs */
1514 for (j = 0; j < NASC; j++)
1515 ct[j] = 0;
1516 for (j = 0; j < n; j += len) {
1517 if ((unsigned char)bp[j] < NASC)
1518 ct[bp[j]|040]++;
1519 switch (bp[j]) {
1520 case '.':
1521 case ',':
1522 case ')':
1523 case '%':
1524 case ';':
1525 case ':':
1526 case '?':
1527 punct++;
1528 if (j < n-1 && bp[j+1] != ' ' && bp[j+1] != '\n')
1529 badpun++;
1530 }
1531 if ((len = mblen(&bp[j], MB_CUR_MAX)) <= 0)
1532 len = 1;
1533 }
1534 if (badpun*5 > punct)
1535 return (0);
1536 vow = ct['a'] + ct['e'] + ct['i'] + ct['o'] + ct['u'];
1537 freq = ct['e'] + ct['t'] + ct['a'] + ct['i'] + ct['o'] + ct['n'];
1538 rare = ct['v'] + ct['j'] + ct['k'] + ct['q'] + ct['x'] + ct['z'];
1539 if (2*ct[';'] > ct['e'])
1540 return (0);
1541 if ((ct['>'] + ct['<'] + ct['/']) > ct['e'])
1542 return (0); /* shell file test */
1543 return (vow * 5 >= n - ct[' '] && freq >= 10 * rare);
1544 }
1545
1546
1547 static int
1548 shellscript(char buf[], struct stat64 *sb)
1549 {
1550 char *tp, *cp, *xp, *up, *gp;
1551
1552 cp = strchr(buf, '\n');
1553 if (cp == NULL || cp - fbuf > fbsz)
1554 return (0);
1555 for (tp = buf; tp != cp && isspace((unsigned char)*tp); tp++)
1556 if (!isascii(*tp))
1557 return (0);
1558 for (xp = tp; tp != cp && !isspace((unsigned char)*tp); tp++)
1559 if (!isascii(*tp))
1560 return (0);
1561 if (tp == xp)
1562 return (0);
1563 if (sb->st_mode & S_ISUID)
1564 up = gettext("set-uid ");
1565 else
1566 up = "";
1567
1568 if (sb->st_mode & S_ISGID)
1569 gp = gettext("set-gid ");
1570 else
1571 gp = "";
1572
1573 if (strncmp(xp, "/bin/sh", tp - xp) == 0)
1574 xp = gettext("shell");
1575 else if (strncmp(xp, "/bin/csh", tp - xp) == 0)
1576 xp = gettext("c-shell");
1577 else if (strncmp(xp, "/usr/sbin/dtrace", tp - xp) == 0)
1578 xp = gettext("DTrace");
1579 else
1580 *tp = '\0';
1581 /*
1582 * TRANSLATION_NOTE
1583 * This message is printed by file command for shell scripts.
1584 * The first %s is for the translation for "set-uid " (if the script
1585 * has the set-uid bit set), or is for an empty string (if the
1586 * script does not have the set-uid bit set).
1587 * Similarly, the second %s is for the translation for "set-gid ",
1588 * or is for an empty string.
1589 * The third %s is for the translation for either: "shell", "c-shell",
1590 * or "DTrace", or is for the pathname of the program the script
1591 * executes.
1592 */
1593 (void) printf(gettext("%s%sexecutable %s script\n"), up, gp, xp);
1594 return (1);
1595 }
1596
1597 static int
1598 get_door_target(char *file, char *buf, size_t bufsize)
1599 {
1600 int fd;
1601 door_info_t di;
1602 psinfo_t psinfo;
1603
1604 if ((fd = open64(file, O_RDONLY)) < 0 ||
1605 door_info(fd, &di) != 0) {
1606 if (fd >= 0)
1607 (void) close(fd);
1608 return (-1);
1609 }
1610 (void) close(fd);
1611
1612 (void) sprintf(buf, "/proc/%ld/psinfo", di.di_target);
1613 if ((fd = open64(buf, O_RDONLY)) < 0 ||
1614 read(fd, &psinfo, sizeof (psinfo)) != sizeof (psinfo)) {
1615 if (fd >= 0)
1616 (void) close(fd);
1617 return (-1);
1618 }
1619 (void) close(fd);
1620
1621 (void) snprintf(buf, bufsize, "%s[%ld]", psinfo.pr_fname, di.di_target);
1622 return (0);
1623 }
1624
1625 /*
1626 * ZIP file header information
1627 */
1628 #define SIGSIZ 4
1629 #define LOCSIG "PK\003\004"
1630 #define LOCHDRSIZ 30
1631
1632 #define CH(b, n) (((unsigned char *)(b))[n])
1633 #define SH(b, n) (CH(b, n) | (CH(b, n+1) << 8))
1634 #define LG(b, n) (SH(b, n) | (SH(b, n+2) << 16))
1635
1636 #define LOCNAM(b) (SH(b, 26)) /* filename size */
1637 #define LOCEXT(b) (SH(b, 28)) /* extra field size */
1638
1639 #define XFHSIZ 4 /* header id, data size */
1640 #define XFHID(b) (SH(b, 0)) /* extract field header id */
1641 #define XFDATASIZ(b) (SH(b, 2)) /* extract field data size */
1642 #define XFJAVASIG 0xcafe /* java executables */
1643
1644 static int
1645 zipfile(char *fbuf, int fd)
1646 {
1647 off_t xoff, xoff_end;
1648
1649 if (strncmp(fbuf, LOCSIG, SIGSIZ) != 0)
1650 return (0);
1651
1652 xoff = LOCHDRSIZ + LOCNAM(fbuf);
1653 xoff_end = xoff + LOCEXT(fbuf);
1654
1655 while (xoff < xoff_end) {
1656 char xfhdr[XFHSIZ];
1657
1658 if (pread(fd, xfhdr, XFHSIZ, xoff) != XFHSIZ)
1659 break;
1660
1661 if (XFHID(xfhdr) == XFJAVASIG) {
1662 (void) printf("%s\n", gettext("java archive file"));
1663 return (1);
1664 }
1665 xoff += sizeof (xfhdr) + XFDATASIZ(xfhdr);
1666 }
1667
1668 /*
1669 * We could just print "ZIP archive" here.
1670 *
1671 * However, customers may be using their own entries in
1672 * /etc/magic to distinguish one kind of ZIP file from another, so
1673 * let's defer the printing of "ZIP archive" to there.
1674 */
1675 return (0);
1676 }
1677
1678 static int
1679 is_crash_dump(const char *buf, int fd)
1680 {
1681 /* LINTED: pointer cast may result in improper alignment */
1682 const dumphdr_t *dhp = (const dumphdr_t *)buf;
1683
1684 /*
1685 * The current DUMP_MAGIC string covers Solaris 7 and later releases.
1686 * The utsname struct is only present in dumphdr_t's with dump_version
1687 * greater than or equal to 9.
1688 */
1689 if (dhp->dump_magic == DUMP_MAGIC) {
1690 print_dumphdr(fd, dhp, return_uint32, NATIVE_ISA);
1691
1692 } else if (dhp->dump_magic == swap_uint32(DUMP_MAGIC)) {
1693 print_dumphdr(fd, dhp, swap_uint32, OTHER_ISA);
1694
1695 } else if (dhp->dump_magic == OLD_DUMP_MAGIC ||
1696 dhp->dump_magic == swap_uint32(OLD_DUMP_MAGIC)) {
1697 char *isa = (dhp->dump_magic == OLD_DUMP_MAGIC ?
1698 NATIVE_ISA : OTHER_ISA);
1699 (void) printf(gettext("SunOS 32-bit %s crash dump\n"), isa);
1700
1701 } else {
1702 return (0);
1703 }
1704
1705 return (1);
1706 }
1707
1708 static void
1709 print_dumphdr(const int fd, const dumphdr_t *dhp, uint32_t (*swap)(uint32_t),
1710 const char *isa)
1711 {
1712 dumphdr_t dh;
1713
1714 /*
1715 * A dumphdr_t is bigger than FBSZ, so we have to manually read the
1716 * rest of it.
1717 */
1718 if (swap(dhp->dump_version) > 8 && pread(fd, &dh, sizeof (dumphdr_t),
1719 (off_t)0) == sizeof (dumphdr_t)) {
1720 const char *c = swap(dh.dump_flags) & DF_COMPRESSED ?
1721 "compressed " : "";
1722 const char *l = swap(dh.dump_flags) & DF_LIVE ?
1723 "live" : "crash";
1724
1725 (void) printf(gettext(
1726 "%s %s %s %u-bit %s %s%s dump from '%s'\n"),
1727 dh.dump_utsname.sysname, dh.dump_utsname.release,
1728 dh.dump_utsname.version, swap(dh.dump_wordsize), isa,
1729 c, l, dh.dump_utsname.nodename);
1730 } else {
1731 (void) printf(gettext("SunOS %u-bit %s crash dump\n"),
1732 swap(dhp->dump_wordsize), isa);
1733 }
1734 }
1735
1736 static void
1737 usage(void)
1738 {
1739 (void) fprintf(stderr, gettext(
1740 "usage: file [-bdh] [-M mfile] [-m mfile] [-f ffile] file ...\n"
1741 " file [-bdh] [-M mfile] [-m mfile] -f ffile\n"
1742 " file -i [-bh] [-f ffile] file ...\n"
1743 " file -i [-bh] -f ffile\n"
1744 " file -c [-d] [-M mfile] [-m mfile]\n"));
1745 exit(2);
1746 }
1747
1748 static uint32_t
1749 swap_uint32(uint32_t in)
1750 {
1751 uint32_t out;
1752
1753 out = (in & 0x000000ff) << 24;
1754 out |= (in & 0x0000ff00) << 8; /* >> 8 << 16 */
1755 out |= (in & 0x00ff0000) >> 8; /* >> 16 << 8 */
1756 out |= (in & 0xff000000) >> 24;
1757
1758 return (out);
1759 }
1760
1761 static uint32_t
1762 return_uint32(uint32_t in)
1763 {
1764 return (in);
1765 }
1766
1767 /*
1768 * Check if str is in the string list str_list.
1769 */
1770 int
1771 is_in_list(char *str)
1772 {
1773 int i;
1774
1775 /*
1776 * Only need to compare the strlen(str_list[i]) bytes.
1777 * That way .stab will match on .stab* sections, and
1778 * .debug will match on .debug* sections.
1779 */
1780 for (i = 0; debug_sections[i] != NULL; i++) {
1781 if (strncmp(debug_sections[i], str,
1782 strlen(debug_sections[i])) == 0) {
1783 return (1);
1784 }
1785 }
1786 return (0);
1787 }
1788
1789 /*
1790 * default_magic -
1791 * allocate space for and create the default magic file
1792 * name string.
1793 */
1794
1795 static void
1796 default_magic(void)
1797 {
1798 const char *msg_locale = setlocale(LC_MESSAGES, NULL);
1799 struct stat statbuf;
1800
1801 if ((dfile = malloc(strlen(msg_locale) + 35)) == NULL) {
1802 int err = errno;
1803 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
1804 File, strerror(err));
1805 exit(2);
1806 }
1807 (void) snprintf(dfile, strlen(msg_locale) + 35,
1808 "/usr/lib/locale/%s/LC_MESSAGES/magic", msg_locale);
1809 if (stat(dfile, &statbuf) != 0) {
1810 (void) strcpy(dfile, "/etc/magic");
1811 }
1812 }
1813
1814 /*
1815 * add_to_mlist -
1816 * Add the given magic_file filename string to the list of magic
1817 * files (mlist). This list of files will later be examined, and
1818 * each magic file's entries will be added in order to
1819 * the mtab table.
1820 *
1821 * The first flag is set to 1 to add to the first list, mlist1.
1822 * The first flag is set to 0 to add to the second list, mlist2.
1823 */
1824
1825 static void
1826 add_to_mlist(char *magic_file, int first)
1827 {
1828 char **mlist; /* ordered list of magic files */
1829 size_t mlist_sz; /* number of pointers allocated for mlist */
1830 char **mlistp; /* next entry in mlist */
1831 size_t mlistp_off;
1832
1833 if (first) {
1834 mlist = mlist1;
1835 mlist_sz = mlist1_sz;
1836 mlistp = mlist1p;
1837 } else {
1838 mlist = mlist2;
1839 mlist_sz = mlist2_sz;
1840 mlistp = mlist2p;
1841 }
1842
1843 if (mlist == NULL) { /* initial mlist allocation */
1844 if ((mlist = calloc(MLIST_SZ, sizeof (char *))) == NULL) {
1845 int err = errno;
1846 (void) fprintf(stderr, gettext("%s: malloc "
1847 "failed: %s\n"), File, strerror(err));
1848 exit(2);
1849 }
1850 mlist_sz = MLIST_SZ;
1851 mlistp = mlist;
1852 }
1853 if ((mlistp - mlist) >= mlist_sz) {
1854 mlistp_off = mlistp - mlist;
1855 mlist_sz *= 2;
1856 if ((mlist = realloc(mlist,
1857 mlist_sz * sizeof (char *))) == NULL) {
1858 int err = errno;
1859 (void) fprintf(stderr, gettext("%s: malloc "
1860 "failed: %s\n"), File, strerror(err));
1861 exit(2);
1862 }
1863 mlistp = mlist + mlistp_off;
1864 }
1865 /*
1866 * now allocate memory for and copy the
1867 * magic file name string
1868 */
1869 if ((*mlistp = malloc(strlen(magic_file) + 1)) == NULL) {
1870 int err = errno;
1871 (void) fprintf(stderr, gettext("%s: malloc failed: %s\n"),
1872 File, strerror(err));
1873 exit(2);
1874 }
1875 (void) strlcpy(*mlistp, magic_file, strlen(magic_file) + 1);
1876 mlistp++;
1877
1878 if (first) {
1879 mlist1 = mlist;
1880 mlist1_sz = mlist_sz;
1881 mlist1p = mlistp;
1882 } else {
1883 mlist2 = mlist;
1884 mlist2_sz = mlist_sz;
1885 mlist2p = mlistp;
1886 }
1887 }
1888
1889 static void
1890 fd_cleanup(void)
1891 {
1892 if (ifd != -1) {
1893 (void) close(ifd);
1894 ifd = -1;
1895 }
1896 if (elffd != -1) {
1897 (void) close(elffd);
1898 elffd = -1;
1899 }
1900 }