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Revision 1.11 - (show annotations) (download) (as text)
Tue Dec 30 13:13:15 2008 UTC (5 years, 11 months ago) by vapier
Branch: MAIN
Changes since 1.10: +3 -3 lines
File MIME type: text/x-csrc
drop excessive parenthesis

1 /*
2 * Copyright 2008 Gentoo Foundation
3 * Distributed under the terms of the GNU General Public License v2
4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/scanmacho.c,v 1.10 2008/12/30 13:09:20 vapier Exp $
5 *
6 * based on scanelf by:
7 * Copyright 2003-2007 Ned Ludd - <solar@gentoo.org>
8 * Copyright 2004-2007 Mike Frysinger - <vapier@gentoo.org>
9 * for Darwin specific fun:
10 * 2008 Fabian Groffen - <grobian@gentoo.org>
11 */
12
13 static const char *rcsid = "$Id: scanmacho.c,v 1.10 2008/12/30 13:09:20 vapier Exp $";
14 const char * const argv0 = "scanmacho";
15
16 #include "paxinc.h"
17
18 #define IS_MODIFIER(c) (c == '%' || c == '#' || c == '+')
19
20 /* prototypes */
21 static int scanmacho_fatobj(fatobj *fobj);
22 static int scanmacho_file(const char *filename, const struct stat *st_cache);
23 static int scanmacho_from_file(const char *filename);
24 static int scanmacho_dir(const char *path);
25 static void scanelf_envpath(void);
26 static void usage(int status);
27 static int parseargs(int argc, char *argv[]);
28
29 /* variables to control behavior */
30 static char match_etypes[126] = "";
31 static char scan_envpath = 0;
32 static char scan_symlink = 1;
33 static char scan_archives = 0;
34 static char dir_recurse = 0;
35 static char dir_crossmount = 1;
36 static char show_perms = 0;
37 static char show_size = 0;
38 static char show_needed = 0;
39 static char show_interp = 0;
40 static char show_bind = 0;
41 static char show_soname = 0;
42 static char show_banner = 1;
43 static char show_endian = 0;
44 static char be_quiet = 0;
45 static char be_verbose = 0;
46 static char be_wewy_wewy_quiet = 0;
47 static char be_semi_verbose = 0;
48 static char *find_lib = NULL;
49 static char *out_format = NULL;
50 static char *search_path = NULL;
51 static char g_match = 0;
52
53 static int match_bits = 0;
54 static unsigned int match_perms = 0;
55
56 static const char *getstr_perms(const char *fname)
57 {
58 struct stat st;
59 static char buf[8];
60
61 if (stat(fname, &st) == -1)
62 return "";
63
64 snprintf(buf, sizeof(buf), "%o", st.st_mode);
65
66 return buf + 2;
67 }
68
69 static const char *macho_file_needed_lib(
70 fatobj *fobj,
71 char *found_needed,
72 char *found_lib,
73 int op,
74 char **ret,
75 size_t *ret_len
76 ) {
77 char *needed;
78 loadcmd *lcmd;
79 struct dylib_command *dlcmd;
80 uint32_t lc_load_dylib = LC_LOAD_DYLIB;
81
82 if ((op == 0 && !show_needed) || (op == 1 && !find_lib))
83 return NULL;
84
85 lcmd = firstloadcmd(fobj);
86
87 if (fobj->swapped)
88 lc_load_dylib = bswap_32(lc_load_dylib);
89
90 do {
91 if (lcmd->lcmd->cmd == lc_load_dylib) {
92 dlcmd = (struct dylib_command*)lcmd->data;
93 if (fobj->swapped) {
94 needed = (char *)(lcmd->data +
95 bswap_32(dlcmd->dylib.name.offset));
96 } else {
97 needed = (char *)(lcmd->data + dlcmd->dylib.name.offset);
98 }
99 if (op == 0) {
100 if (!be_wewy_wewy_quiet) {
101 if (*found_needed)
102 xchrcat(ret, ',', ret_len);
103 xstrcat(ret, needed, ret_len);
104 }
105 *found_needed = 1;
106 } else {
107 if (!strncmp(find_lib, needed,
108 strlen(!g_match ? needed : find_lib)))
109 {
110 *found_lib = 1;
111 free(lcmd);
112 return (be_wewy_wewy_quiet ? NULL : needed);
113 }
114 }
115 }
116 } while (nextloadcmd(lcmd));
117
118 if (op == 0 && !*found_needed && be_verbose)
119 warn("Mach-O lacks LC_LOAD_DYLIB commands: %s", fobj->filename);
120
121 return NULL;
122 }
123
124 static char *macho_file_interp(fatobj *fobj, char *found_interp)
125 {
126 loadcmd *lcmd;
127 uint32_t lc_load_dylinker = LC_LOAD_DYLINKER;
128
129 if (!show_interp)
130 return NULL;
131
132 lcmd = firstloadcmd(fobj);
133
134 if (fobj->swapped)
135 lc_load_dylinker = bswap_32(lc_load_dylinker);
136
137 do {
138 if (lcmd->lcmd->cmd == lc_load_dylinker) {
139 struct dylinker_command *dlcmd =
140 (struct dylinker_command*)lcmd->data;
141 char *dylinker;
142 if (fobj->swapped) {
143 dylinker = (char *)(lcmd->data +
144 bswap_32(dlcmd->name.offset));
145 } else {
146 dylinker = (char *)(lcmd->data + dlcmd->name.offset);
147 }
148 *found_interp = 1;
149 free(lcmd);
150 return (be_wewy_wewy_quiet ? NULL : dylinker);
151 }
152 } while (nextloadcmd(lcmd));
153
154 return NULL;
155 }
156
157 static char *macho_file_soname(fatobj *fobj, char *found_soname)
158 {
159 loadcmd *lcmd;
160 char *soname;
161 uint32_t lc_id_dylib = LC_ID_DYLIB;
162
163 if (!show_soname)
164 return NULL;
165
166 lcmd = firstloadcmd(fobj);
167
168 if (fobj->swapped)
169 lc_id_dylib = bswap_32(lc_id_dylib);
170
171 do {
172 if (lcmd->lcmd->cmd == lc_id_dylib) {
173 struct dylib_command *dlcmd = (struct dylib_command*)lcmd->data;
174 if (fobj->swapped) {
175 soname = (char *)(lcmd->data +
176 bswap_32(dlcmd->dylib.name.offset));
177 } else {
178 soname = (char *)(lcmd->data + dlcmd->dylib.name.offset);
179 }
180 *found_soname = 1;
181 free(lcmd);
182 return (be_wewy_wewy_quiet ? NULL : soname);
183 }
184 } while (nextloadcmd(lcmd));
185
186 return NULL;
187 }
188
189 /* scan a macho file and show all the fun stuff */
190 #define prints(str) write(fileno(stdout), str, strlen(str))
191 static int scanmacho_fatobj(fatobj *fobj)
192 {
193 unsigned long i;
194 char found_needed, found_interp, found_soname, found_lib, found_file;
195 static char *out_buffer = NULL;
196 static size_t out_len;
197
198 found_needed = found_interp = found_soname = \
199 found_lib = found_file = 0;
200
201 if (be_verbose > 2)
202 printf("%s: scanning file {%s,%s}\n", fobj->filename,
203 get_machocputype(fobj),
204 get_machosubcputype(fobj));
205 else if (be_verbose > 1)
206 printf("%s: scanning file\n", fobj->filename);
207
208 /* init output buffer */
209 if (!out_buffer) {
210 out_len = sizeof(char) * 80;
211 out_buffer = xmalloc(out_len);
212 }
213 *out_buffer = '\0';
214
215 /* show the header */
216 if (!be_quiet && show_banner) {
217 for (i = 0; out_format[i]; ++i) {
218 if (!IS_MODIFIER(out_format[i])) continue;
219
220 switch (out_format[++i]) {
221 case '+': break;
222 case '%': break;
223 case '#': break;
224 case 'F':
225 case 'p':
226 case 'f': prints("FILE "); found_file = 1; break;
227 case 'o': prints(" TYPE "); break;
228 case 'M': prints("CPU "); break;
229 case 'n': prints("NEEDED "); break;
230 case 'i': prints("DYLINKER "); break;
231 case 'b': prints("FLAGS "); break;
232 case 'Z': prints("SIZE "); break;
233 case 'S': prints("INSTALLNAME "); break;
234 case 'N': prints("LIB "); break;
235 case 'a': prints("ARCH "); break;
236 case 'O': prints("PERM "); break;
237 case 'D': prints("ENDIAN "); break;
238 default: warnf("'%c' has no title ?", out_format[i]);
239 }
240 }
241 if (!found_file) prints("FILE ");
242 prints("\n");
243 found_file = 0;
244 show_banner = 0;
245 }
246
247 /* dump all the good stuff */
248 for (i = 0; out_format[i]; ++i) {
249 const char *out;
250 const char *tmp;
251 static char ubuf[sizeof(unsigned long)*2];
252 if (!IS_MODIFIER(out_format[i])) {
253 xchrcat(&out_buffer, out_format[i], &out_len);
254 continue;
255 }
256
257 out = NULL;
258 be_wewy_wewy_quiet = (out_format[i] == '#');
259 be_semi_verbose = (out_format[i] == '+');
260 switch (out_format[++i]) {
261 case '+':
262 case '%':
263 case '#':
264 xchrcat(&out_buffer, out_format[i], &out_len); break;
265 case 'F':
266 found_file = 1;
267 if (be_wewy_wewy_quiet) break;
268 xstrcat(&out_buffer, fobj->filename, &out_len);
269 break;
270 case 'p':
271 found_file = 1;
272 if (be_wewy_wewy_quiet) break;
273 tmp = fobj->filename;
274 if (search_path) {
275 ssize_t len_search = strlen(search_path);
276 ssize_t len_file = strlen(fobj->filename);
277 if (!strncmp(fobj->filename, search_path, len_search) && \
278 len_file > len_search)
279 tmp += len_search;
280 if (*tmp == '/' && search_path[len_search-1] == '/') tmp++;
281 }
282 xstrcat(&out_buffer, tmp, &out_len);
283 break;
284 case 'f':
285 found_file = 1;
286 if (be_wewy_wewy_quiet) break;
287 xstrcat(&out_buffer, fobj->base_filename, &out_len);
288 break;
289 case 'o': out = get_machomhtype(fobj); break;
290 case 'M': out = get_machocputype(fobj); break;
291 case 'D': out = get_machoendian(fobj); break;
292 case 'O': out = getstr_perms(fobj->filename); break;
293 case 'n':
294 case 'N': out = macho_file_needed_lib(fobj, &found_needed, &found_lib, (out_format[i]=='N'), &out_buffer, &out_len); break;
295 case 'i': out = macho_file_interp(fobj, &found_interp); break;
296 case 'b': get_machomhflags(fobj, &out_buffer, &out_len); break;
297 case 'S': out = macho_file_soname(fobj, &found_soname); break;
298 case 'a': out = get_machomtype(fobj); break;
299 case 'Z': snprintf(ubuf, sizeof(ubuf), "%llu", (unsigned long long int)fobj->len); out = ubuf; break;;
300 default: warnf("'%c' has no scan code?", out_format[i]);
301 }
302 if (out) {
303 /* hack for comma delimited output like `scanelf -s sym1,sym2,sym3` */
304 if (out_format[i] == 's' && (tmp=strchr(out,',')) != NULL)
305 xstrncat(&out_buffer, out, &out_len, (tmp-out));
306 else
307 xstrcat(&out_buffer, out, &out_len);
308 }
309 }
310
311 #define FOUND_SOMETHING() \
312 ( found_needed || found_interp || found_soname || found_lib )
313
314 if (!found_file && (!be_quiet || (be_quiet && FOUND_SOMETHING()))) {
315 xchrcat(&out_buffer, ' ', &out_len);
316 xstrcat(&out_buffer, fobj->filename, &out_len);
317 }
318 if (!be_quiet || (be_quiet && FOUND_SOMETHING())) {
319 puts(out_buffer);
320 fflush(stdout);
321 }
322
323 return 0;
324 }
325
326 /* scan a single Mach-O */
327 static int scanmacho_fat(const char *filename, int fd, size_t len)
328 {
329 int ret = 1;
330 fatobj *fobj;
331 fatobj *walk;
332
333 /* verify this is real Mach-O */
334 if ((fobj = readmacho_fd(filename, fd, len)) == NULL) {
335 if (be_verbose > 2) printf("%s: not a Mach-O object\n", filename);
336 return ret;
337 }
338 switch (match_bits) {
339 case 32:
340 case 64:
341 walk = fobj;
342 do {
343 if ((walk->ismach64 && match_bits == 64) ||
344 (!walk->ismach64 && match_bits == 32))
345 {
346 ret = scanmacho_fatobj(walk);
347 }
348 } while (walk->next != NULL && (walk = walk->next));
349 goto label_done;
350 default:
351 break;
352 }
353 if (strlen(match_etypes)) {
354 char sbuf[128];
355 char ftype[32];
356
357 snprintf(sbuf, 128, ",%s,", match_etypes);
358
359 walk = fobj;
360 do {
361 snprintf(ftype, 32, ",%s,", get_machomhtype(walk));
362 if (strstr(sbuf, ftype) != NULL) {
363 ret = scanmacho_fatobj(walk);
364 }
365 } while (walk->next != NULL && (walk = walk->next));
366 goto label_done;
367 }
368
369 walk = fobj;
370 do {
371 ret = scanmacho_fatobj(walk);
372 } while (walk->next != NULL && (walk = walk->next));
373
374 label_done:
375 unreadmacho(fobj);
376 return ret;
377 }
378
379 /* scan an archive of Mach-Os */
380 static int scanmacho_archive(const char *filename, int fd, size_t len)
381 {
382 archive_handle *ar;
383 archive_member *m;
384 char *ar_buffer;
385 fatobj *fobj;
386 fatobj *walk;
387
388 ar = ar_open_fd(filename, fd);
389 if (ar == NULL)
390 return 1;
391
392 ar_buffer = mmap(0, len, PROT_READ, MAP_PRIVATE, fd, 0);
393 while ((m = ar_next(ar)) != NULL) {
394 fobj = readmacho_buffer(m->name, ar_buffer + lseek(fd, 0, SEEK_CUR), m->size);
395 if (fobj) {
396 walk = fobj;
397 do {
398 scanmacho_fatobj(walk);
399 } while (walk->next != NULL && (walk = walk->next));
400 fobj->data = NULL;
401 unreadmacho(fobj);
402 }
403 }
404 munmap(ar_buffer, len);
405
406 return 0;
407 }
408 /* scan a file which may be an Mach-O or an archive or some other
409 * magical beast */
410 static int scanmacho_file(const char *filename, const struct stat *st_cache)
411 {
412 const struct stat *st = st_cache;
413 struct stat symlink_st;
414 int fd;
415
416 /* always handle regular files and handle symlinked files if no -y */
417 if (S_ISLNK(st->st_mode)) {
418 if (!scan_symlink)
419 return 1;
420 stat(filename, &symlink_st);
421 st = &symlink_st;
422 }
423
424 if (!S_ISREG(st->st_mode)) {
425 if (be_verbose > 2) printf("%s: skipping non-file\n", filename);
426 return 1;
427 }
428
429 if (match_perms) {
430 if ((st->st_mode | match_perms) != st->st_mode)
431 return 1;
432 }
433 if ((fd = open(filename, O_RDONLY)) == -1)
434 return 1;
435
436 if (scanmacho_fat(filename, fd, st->st_size) == 1 && scan_archives)
437 /* if it isn't an Mach-O, maybe it's an .a archive */
438 scanmacho_archive(filename, fd, st->st_size);
439
440 close(fd);
441 return 0;
442 }
443
444 /* scan a directory for Mach-O files and print when we find one */
445 static int scanmacho_dir(const char *path)
446 {
447 register DIR *dir;
448 register struct dirent *dentry;
449 struct stat st_top, st;
450 char buf[__PAX_UTILS_PATH_MAX];
451 size_t pathlen = 0, len = 0;
452 int ret = 0;
453
454 /* make sure path exists */
455 if (lstat(path, &st_top) == -1) {
456 if (be_verbose > 2) printf("%s: does not exist\n", path);
457 return 1;
458 }
459
460 /* ok, if it isn't a directory, assume we can open it */
461 if (!S_ISDIR(st_top.st_mode)) {
462 return scanmacho_file(path, &st_top);
463 }
464
465 /* now scan the dir looking for fun stuff */
466 if ((dir = opendir(path)) == NULL) {
467 warnf("could not opendir %s: %s", path, strerror(errno));
468 return 1;
469 }
470 if (be_verbose > 1) printf("%s: scanning dir\n", path);
471
472 pathlen = strlen(path);
473 while ((dentry = readdir(dir))) {
474 if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
475 continue;
476 len = (pathlen + 1 + strlen(dentry->d_name) + 1);
477 if (len >= sizeof(buf)) {
478 warnf("Skipping '%s': len > sizeof(buf); %lu > %lu\n", path,
479 (unsigned long)len, (unsigned long)sizeof(buf));
480 continue;
481 }
482 snprintf(buf, sizeof(buf), "%s%s%s", path, (path[pathlen-1] == '/') ? "" : "/", dentry->d_name);
483 if (lstat(buf, &st) != -1) {
484 if (S_ISREG(st.st_mode))
485 ret = scanmacho_file(buf, &st);
486 else if (dir_recurse && S_ISDIR(st.st_mode)) {
487 if (dir_crossmount || (st_top.st_dev == st.st_dev))
488 ret = scanmacho_dir(buf);
489 }
490 }
491 }
492 closedir(dir);
493 return ret;
494 }
495
496 static int scanmacho_from_file(const char *filename)
497 {
498 FILE *fp = NULL;
499 char *p;
500 char path[__PAX_UTILS_PATH_MAX];
501 int ret = 0;
502
503 if (strcmp(filename, "-") == 0)
504 fp = stdin;
505 else if ((fp = fopen(filename, "r")) == NULL)
506 return 1;
507
508 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) {
509 if ((p = strchr(path, '\n')) != NULL)
510 *p = 0;
511 search_path = path;
512 ret = scanmacho_dir(path);
513 }
514 if (fp != stdin)
515 fclose(fp);
516 return ret;
517 }
518
519 /* scan env PATH for paths */
520 static void scanelf_envpath(void)
521 {
522 char *path, *p;
523
524 path = getenv("PATH");
525 if (!path)
526 err("PATH is not set in your env !");
527 path = xstrdup(path);
528
529 while ((p = strrchr(path, ':')) != NULL) {
530 scanmacho_dir(p + 1);
531 *p = 0;
532 }
533
534 free(path);
535 }
536
537 /* usage / invocation handling functions */ /* Free Flags: c d e j k l r s t u w x z C G H I J K L P Q T U W X Y */
538 #define PARSE_FLAGS "pRmyAnibSN:gE:M:DO:ZaqvF:f:o:BhV"
539 #define a_argument required_argument
540 static struct option const long_opts[] = {
541 {"path", no_argument, NULL, 'p'},
542 {"recursive", no_argument, NULL, 'R'},
543 {"mount", no_argument, NULL, 'm'},
544 {"symlink", no_argument, NULL, 'y'},
545 {"archives", no_argument, NULL, 'A'},
546 {"needed", no_argument, NULL, 'n'},
547 {"interp", no_argument, NULL, 'i'},
548 {"bind", no_argument, NULL, 'b'},
549 {"soname", no_argument, NULL, 'S'},
550 {"lib", a_argument, NULL, 'N'},
551 {"gmatch", no_argument, NULL, 'g'},
552 {"etype", a_argument, NULL, 'E'},
553 {"bits", a_argument, NULL, 'M'},
554 {"endian", no_argument, NULL, 'D'},
555 {"perms", a_argument, NULL, 'O'},
556 {"size", no_argument, NULL, 'Z'},
557 {"all", no_argument, NULL, 'a'},
558 {"quiet", no_argument, NULL, 'q'},
559 {"verbose", no_argument, NULL, 'v'},
560 {"format", a_argument, NULL, 'F'},
561 {"from", a_argument, NULL, 'f'},
562 {"file", a_argument, NULL, 'o'},
563 {"nobanner", no_argument, NULL, 'B'},
564 {"help", no_argument, NULL, 'h'},
565 {"version", no_argument, NULL, 'V'},
566 {NULL, no_argument, NULL, 0x0}
567 };
568
569 static const char *opts_help[] = {
570 "Scan all directories in PATH environment",
571 "Scan directories recursively",
572 "Don't recursively cross mount points",
573 "Don't scan symlinks",
574 "Scan archives (.a files)",
575 "Print LC_LOAD_DYLIB information (ELF: NEEDED)",
576 "Print LC_LOAD_DYLINKER information (ELF: INTERP)",
577 "Print flags from mach_header (ELF: BIND)",
578 "Print LC_ID_DYLIB information (ELF: SONAME)",
579 "Find a specified library",
580 "Use strncmp to match libraries. (use with -N)",
581 "Print only Mach-O files matching mach_header\n"
582 " MH_OBJECT,MH_EXECUTE ... (ELF: etype)",
583 "Print only Mach-O files matching numeric bits",
584 "Print Endianness",
585 "Print only Mach-O files matching octal permissions",
586 "Print Mach-O file size",
587 "Print all scanned info (-F\"%o %O %D %b %F\")\n",
588 "Only output 'bad' things",
589 "Be verbose (can be specified more than once)",
590 "Use specified format for output",
591 "Read input stream from a filename",
592 "Write output stream to a filename",
593 "Don't display the header",
594 "Print this help and exit",
595 "Print version and exit",
596 NULL
597 };
598
599 /* display usage and exit */
600 static void usage(int status)
601 {
602 unsigned long i;
603 printf("* Scan Mach-O binaries for stuff\n\n"
604 "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0);
605 printf("Options: -[%s]\n", PARSE_FLAGS);
606 for (i = 0; long_opts[i].name; ++i)
607 if (long_opts[i].has_arg == no_argument)
608 printf(" -%c, --%-14s* %s\n", long_opts[i].val,
609 long_opts[i].name, opts_help[i]);
610 else
611 printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val,
612 long_opts[i].name, opts_help[i]);
613
614 puts("\nFor more information, see the scanmacho(1) manpage");
615 exit(status);
616 }
617
618 /* parse command line arguments and preform needed actions */
619 static int parseargs(int argc, char *argv[])
620 {
621 int i;
622 const char *from_file = NULL;
623 int ret = 0;
624
625 opterr = 0;
626 while ((i = getopt_long(argc, argv, PARSE_FLAGS, long_opts, NULL)) != -1) {
627 switch (i) {
628
629 case 'V':
630 printf("pax-utils-%s: %s compiled %s\n%s\n"
631 "%s written for Gentoo by <solar, vapier and grobian @ gentoo.org>\n",
632 VERSION, __FILE__, __DATE__, rcsid, argv0);
633 exit(EXIT_SUCCESS);
634 break;
635 case 'h': usage(EXIT_SUCCESS); break;
636 case 'f':
637 if (from_file) warn("You prob don't want to specify -f twice");
638 from_file = optarg;
639 break;
640 case 'E':
641 strncpy(match_etypes, optarg, sizeof(match_etypes));
642 break;
643 case 'M':
644 match_bits = atoi(optarg);
645 break;
646 case 'O':
647 if (sscanf(optarg, "%o", &match_perms) == -1)
648 match_bits = 0;
649 break;
650 case 'o': {
651 if (freopen(optarg, "w", stdout) == NULL)
652 err("Could not open output stream '%s': %s", optarg, strerror(errno));
653 break;
654 }
655 case 'N': {
656 if (find_lib) warn("You prob don't want to specify -N twice");
657 find_lib = optarg;
658 break;
659 }
660 case 'F': {
661 if (out_format) warn("You prob don't want to specify -F twice");
662 out_format = optarg;
663 break;
664 }
665 case 'Z': show_size = 1; break;
666 case 'g': g_match = 1; break;
667 case 'y': scan_symlink = 0; break;
668 case 'A': scan_archives = 1; break;
669 case 'B': show_banner = 0; break;
670 case 'p': scan_envpath = 1; break;
671 case 'R': dir_recurse = 1; break;
672 case 'm': dir_crossmount = 0; break;
673 case 'n': show_needed = 1; break;
674 case 'i': show_interp = 1; break;
675 case 'b': show_bind = 1; break;
676 case 'S': show_soname = 1; break;
677 case 'q': be_quiet = 1; break;
678 case 'v': be_verbose = (be_verbose % 20) + 1; break;
679 case 'a': show_perms = show_endian = show_bind = 1; break;
680 case 'D': show_endian = 1; break;
681 case ':':
682 err("Option '%c' is missing parameter", optopt);
683 case '?':
684 err("Unknown option '%c' or argument missing", optopt);
685 default:
686 err("Unhandled option '%c'; please report this", i);
687 }
688 }
689 /* let the format option override all other options */
690 if (out_format) {
691 show_needed = show_interp = show_bind = show_soname = \
692 show_perms = show_endian = show_size = 0;
693 for (i = 0; out_format[i]; ++i) {
694 if (!IS_MODIFIER(out_format[i])) continue;
695
696 switch (out_format[++i]) {
697 case '+': break;
698 case '%': break;
699 case '#': break;
700 case 'F': break;
701 case 'p': break;
702 case 'f': break;
703 case 'k': break;
704 case 'N': break;
705 case 'o': break;
706 case 'a': break;
707 case 'M': break;
708 case 'Z': show_size = 1; break;
709 case 'D': show_endian = 1; break;
710 case 'O': show_perms = 1; break;
711 case 'n': show_needed = 1; break;
712 case 'i': show_interp = 1; break;
713 case 'b': show_bind = 1; break;
714 case 'S': show_soname = 1; break;
715 default:
716 err("Invalid format specifier '%c' (byte %i)",
717 out_format[i], i+1);
718 }
719 }
720
721 /* construct our default format */
722 } else {
723 size_t fmt_len = 30;
724 out_format = xmalloc(sizeof(char) * fmt_len);
725 *out_format = '\0';
726 if (!be_quiet) xstrcat(&out_format, "%a ", &fmt_len);
727 if (!be_quiet) xstrcat(&out_format, "%o ", &fmt_len);
728 if (show_perms) xstrcat(&out_format, "%O ", &fmt_len);
729 if (show_size) xstrcat(&out_format, "%Z ", &fmt_len);
730 if (show_endian) xstrcat(&out_format, "%D ", &fmt_len);
731 if (show_needed) xstrcat(&out_format, "%n ", &fmt_len);
732 if (show_interp) xstrcat(&out_format, "%i ", &fmt_len);
733 if (show_bind) xstrcat(&out_format, "%b ", &fmt_len);
734 if (show_soname) xstrcat(&out_format, "%S ", &fmt_len);
735 if (find_lib) xstrcat(&out_format, "%N ", &fmt_len);
736 if (!be_quiet) xstrcat(&out_format, "%F ", &fmt_len);
737 }
738 if (be_verbose > 2) printf("Format: %s\n", out_format);
739
740 /* now lets actually do the scanning */
741 if (scan_envpath)
742 scanelf_envpath();
743 if (!from_file && optind == argc && ttyname(0) == NULL && !scan_envpath)
744 from_file = "-";
745 if (from_file) {
746 scanmacho_from_file(from_file);
747 from_file = *argv;
748 }
749 if (optind == argc && !scan_envpath && !from_file)
750 err("Nothing to scan !?");
751 while (optind < argc) {
752 search_path = argv[optind++];
753 ret = scanmacho_dir(search_path);
754 }
755
756 return ret;
757 }
758
759 int main(int argc, char *argv[])
760 {
761 int ret;
762 if (argc < 2)
763 usage(EXIT_FAILURE);
764 ret = parseargs(argc, argv);
765 fclose(stdout);
766 return ret;
767 }

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