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Revision 1.9 - (hide annotations) (download) (as text)
Tue Dec 30 12:39:53 2008 UTC (5 years, 11 months ago) by vapier
Branch: MAIN
Changes since 1.8: +4 -9 lines
File MIME type: text/x-csrc
mark local state vars as static and drop unused ones

1 grobian 1.1 /*
2     * Copyright 2008 Gentoo Foundation
3     * Distributed under the terms of the GNU General Public License v2
4 vapier 1.9 * $Header: /var/cvsroot/gentoo-projects/pax-utils/scanmacho.c,v 1.8 2008/12/30 12:34:28 vapier Exp $
5 grobian 1.1 *
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 vapier 1.9 static const char *rcsid = "$Id: scanmacho.c,v 1.8 2008/12/30 12:34:28 vapier Exp $";
14 grobian 1.1 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 vapier 1.9 static int match_bits = 0;
54     static unsigned int match_perms = 0;
55 grobian 1.1
56     static char *getstr_perms(const char *fname);
57     static char *getstr_perms(const char *fname)
58     {
59     struct stat st;
60     static char buf[8];
61    
62     if ((stat(fname, &st)) == (-1))
63     return (char *) "";
64    
65     snprintf(buf, sizeof(buf), "%o", st.st_mode);
66    
67     return (char *) buf + 2;
68     }
69    
70     static const char *macho_file_needed_lib(
71     fatobj *fobj,
72     char *found_needed,
73     char *found_lib,
74     int op,
75     char **ret,
76     size_t *ret_len
77     ) {
78     char *needed;
79     loadcmd *lcmd;
80     struct dylib_command *dlcmd;
81     uint32_t lc_load_dylib = LC_LOAD_DYLIB;
82    
83     if ((op == 0 && !show_needed) || (op == 1 && !find_lib))
84     return NULL;
85    
86     lcmd = firstloadcmd(fobj);
87    
88     if (fobj->swapped)
89     lc_load_dylib = bswap_32(lc_load_dylib);
90    
91     do {
92     if (lcmd->lcmd->cmd == lc_load_dylib) {
93     dlcmd = (struct dylib_command*)lcmd->data;
94     if (fobj->swapped) {
95     needed = (char *)(lcmd->data +
96     bswap_32(dlcmd->dylib.name.offset));
97     } else {
98     needed = (char *)(lcmd->data + dlcmd->dylib.name.offset);
99     }
100     if (op == 0) {
101     if (!be_wewy_wewy_quiet) {
102     if (*found_needed)
103     xchrcat(ret, ',', ret_len);
104     xstrcat(ret, needed, ret_len);
105     }
106     *found_needed = 1;
107     } else {
108     if (!strncmp(find_lib, needed,
109     strlen(!g_match ? needed : find_lib)))
110     {
111     *found_lib = 1;
112     free(lcmd);
113     return (be_wewy_wewy_quiet ? NULL : needed);
114     }
115     }
116     }
117     } while (nextloadcmd(lcmd));
118    
119     if (op == 0 && !*found_needed && be_verbose)
120     warn("Mach-O lacks LC_LOAD_DYLIB commands: %s", fobj->filename);
121    
122     return NULL;
123     }
124    
125     static char *macho_file_interp(fatobj *fobj, char *found_interp)
126     {
127     loadcmd *lcmd;
128     uint32_t lc_load_dylinker = LC_LOAD_DYLINKER;
129    
130     if (!show_interp)
131     return NULL;
132    
133     lcmd = firstloadcmd(fobj);
134    
135     if (fobj->swapped)
136     lc_load_dylinker = bswap_32(lc_load_dylinker);
137    
138     do {
139     if (lcmd->lcmd->cmd == lc_load_dylinker) {
140     struct dylinker_command *dlcmd =
141     (struct dylinker_command*)lcmd->data;
142     char *dylinker;
143     if (fobj->swapped) {
144     dylinker = (char *)(lcmd->data +
145     bswap_32(dlcmd->name.offset));
146     } else {
147     dylinker = (char *)(lcmd->data + dlcmd->name.offset);
148     }
149     *found_interp = 1;
150     free(lcmd);
151     return (be_wewy_wewy_quiet ? NULL : dylinker);
152     }
153     } while (nextloadcmd(lcmd));
154 vapier 1.7
155 grobian 1.1 return NULL;
156     }
157    
158     static char *macho_file_soname(fatobj *fobj, char *found_soname)
159     {
160     loadcmd *lcmd;
161     char *soname;
162     uint32_t lc_id_dylib = LC_ID_DYLIB;
163    
164     if (!show_soname)
165     return NULL;
166    
167     lcmd = firstloadcmd(fobj);
168    
169     if (fobj->swapped)
170     lc_id_dylib = bswap_32(lc_id_dylib);
171    
172     do {
173     if (lcmd->lcmd->cmd == lc_id_dylib) {
174     struct dylib_command *dlcmd = (struct dylib_command*)lcmd->data;
175     if (fobj->swapped) {
176     soname = (char *)(lcmd->data +
177     bswap_32(dlcmd->dylib.name.offset));
178     } else {
179     soname = (char *)(lcmd->data + dlcmd->dylib.name.offset);
180     }
181     *found_soname = 1;
182     free(lcmd);
183     return (be_wewy_wewy_quiet ? NULL : soname);
184     }
185     } while (nextloadcmd(lcmd));
186 vapier 1.7
187 grobian 1.1 return NULL;
188     }
189    
190     /* scan a macho file and show all the fun stuff */
191     #define prints(str) write(fileno(stdout), str, strlen(str))
192     static int scanmacho_fatobj(fatobj *fobj)
193     {
194     unsigned long i;
195     char found_needed, found_interp, found_soname, found_lib, found_file;
196     static char *out_buffer = NULL;
197     static size_t out_len;
198    
199     found_needed = found_interp = found_soname = \
200     found_lib = found_file = 0;
201    
202     if (be_verbose > 2)
203     printf("%s: scanning file {%s,%s}\n", fobj->filename,
204     get_machocputype(fobj),
205     get_machosubcputype(fobj));
206     else if (be_verbose > 1)
207     printf("%s: scanning file\n", fobj->filename);
208    
209     /* init output buffer */
210     if (!out_buffer) {
211     out_len = sizeof(char) * 80;
212     out_buffer = xmalloc(out_len);
213     }
214     *out_buffer = '\0';
215    
216     /* show the header */
217     if (!be_quiet && show_banner) {
218     for (i = 0; out_format[i]; ++i) {
219     if (!IS_MODIFIER(out_format[i])) continue;
220    
221     switch (out_format[++i]) {
222     case '+': break;
223     case '%': break;
224     case '#': break;
225     case 'F':
226     case 'p':
227     case 'f': prints("FILE "); found_file = 1; break;
228     case 'o': prints(" TYPE "); break;
229     case 'M': prints("CPU "); break;
230     case 'n': prints("NEEDED "); break;
231     case 'i': prints("DYLINKER "); break;
232     case 'b': prints("FLAGS "); break;
233     case 'Z': prints("SIZE "); break;
234     case 'S': prints("INSTALLNAME "); break;
235     case 'N': prints("LIB "); break;
236     case 'a': prints("ARCH "); break;
237     case 'O': prints("PERM "); break;
238     case 'D': prints("ENDIAN "); break;
239     default: warnf("'%c' has no title ?", out_format[i]);
240     }
241     }
242     if (!found_file) prints("FILE ");
243     prints("\n");
244     found_file = 0;
245     show_banner = 0;
246     }
247    
248     /* dump all the good stuff */
249     for (i = 0; out_format[i]; ++i) {
250     const char *out;
251     const char *tmp;
252     static char ubuf[sizeof(unsigned long)*2];
253     if (!IS_MODIFIER(out_format[i])) {
254     xchrcat(&out_buffer, out_format[i], &out_len);
255     continue;
256     }
257    
258     out = NULL;
259     be_wewy_wewy_quiet = (out_format[i] == '#');
260     be_semi_verbose = (out_format[i] == '+');
261     switch (out_format[++i]) {
262     case '+':
263     case '%':
264     case '#':
265     xchrcat(&out_buffer, out_format[i], &out_len); break;
266     case 'F':
267     found_file = 1;
268     if (be_wewy_wewy_quiet) break;
269     xstrcat(&out_buffer, fobj->filename, &out_len);
270     break;
271     case 'p':
272     found_file = 1;
273     if (be_wewy_wewy_quiet) break;
274     tmp = fobj->filename;
275     if (search_path) {
276     ssize_t len_search = strlen(search_path);
277     ssize_t len_file = strlen(fobj->filename);
278     if (!strncmp(fobj->filename, search_path, len_search) && \
279     len_file > len_search)
280     tmp += len_search;
281     if (*tmp == '/' && search_path[len_search-1] == '/') tmp++;
282     }
283     xstrcat(&out_buffer, tmp, &out_len);
284     break;
285     case 'f':
286     found_file = 1;
287     if (be_wewy_wewy_quiet) break;
288     xstrcat(&out_buffer, fobj->base_filename, &out_len);
289     break;
290     case 'o': out = get_machomhtype(fobj); break;
291     case 'M': out = get_machocputype(fobj); break;
292     case 'D': out = get_machoendian(fobj); break;
293     case 'O': out = getstr_perms(fobj->filename); break;
294     case 'n':
295     case 'N': out = macho_file_needed_lib(fobj, &found_needed, &found_lib, (out_format[i]=='N'), &out_buffer, &out_len); break;
296     case 'i': out = macho_file_interp(fobj, &found_interp); break;
297     case 'b': get_machomhflags(fobj, &out_buffer, &out_len); break;
298     case 'S': out = macho_file_soname(fobj, &found_soname); break;
299     case 'a': out = get_machomtype(fobj); break;
300     case 'Z': snprintf(ubuf, sizeof(ubuf), "%llu", (unsigned long long int)fobj->len); out = ubuf; break;;
301     default: warnf("'%c' has no scan code?", out_format[i]);
302     }
303     if (out) {
304     /* hack for comma delimited output like `scanelf -s sym1,sym2,sym3` */
305     if (out_format[i] == 's' && (tmp=strchr(out,',')) != NULL)
306     xstrncat(&out_buffer, out, &out_len, (tmp-out));
307     else
308     xstrcat(&out_buffer, out, &out_len);
309     }
310     }
311    
312     #define FOUND_SOMETHING() \
313     ( found_needed || found_interp || found_soname || found_lib )
314    
315     if (!found_file && (!be_quiet || (be_quiet && FOUND_SOMETHING()))) {
316     xchrcat(&out_buffer, ' ', &out_len);
317     xstrcat(&out_buffer, fobj->filename, &out_len);
318     }
319     if (!be_quiet || (be_quiet && FOUND_SOMETHING())) {
320     puts(out_buffer);
321     fflush(stdout);
322     }
323    
324     return 0;
325     }
326    
327 grobian 1.2 /* scan a single Mach-O */
328 grobian 1.1 static int scanmacho_fat(const char *filename, int fd, size_t len)
329     {
330     int ret = 1;
331     fatobj *fobj;
332     fatobj *walk;
333    
334     /* verify this is real Mach-O */
335     if ((fobj = readmacho_fd(filename, fd, len)) == NULL) {
336     if (be_verbose > 2) printf("%s: not a Mach-O object\n", filename);
337     return ret;
338     }
339     switch (match_bits) {
340     case 32:
341     case 64:
342     walk = fobj;
343     do {
344     if ((walk->ismach64 && match_bits == 64) ||
345     (!walk->ismach64 && match_bits == 32))
346     {
347     ret = scanmacho_fatobj(walk);
348     }
349     } while (walk->next != NULL && (walk = walk->next));
350     goto label_done;
351     default:
352     break;
353     }
354     if (strlen(match_etypes)) {
355 grobian 1.2 char sbuf[128];
356     char ftype[32];
357    
358     snprintf(sbuf, 128, ",%s,", match_etypes);
359    
360     walk = fobj;
361     do {
362     snprintf(ftype, 32, ",%s,", get_machomhtype(walk));
363     if (strstr(sbuf, ftype) != NULL) {
364     ret = scanmacho_fatobj(walk);
365 grobian 1.1 }
366 grobian 1.2 } while (walk->next != NULL && (walk = walk->next));
367     goto label_done;
368 grobian 1.1 }
369 grobian 1.2
370 grobian 1.1 walk = fobj;
371     do {
372     ret = scanmacho_fatobj(walk);
373     } while (walk->next != NULL && (walk = walk->next));
374    
375     label_done:
376     unreadmacho(fobj);
377     return ret;
378     }
379    
380     /* scan an archive of Mach-Os */
381     static int scanmacho_archive(const char *filename, int fd, size_t len)
382     {
383     archive_handle *ar;
384     archive_member *m;
385     char *ar_buffer;
386     fatobj *fobj;
387     fatobj *walk;
388    
389     ar = ar_open_fd(filename, fd);
390     if (ar == NULL)
391     return 1;
392    
393 vapier 1.6 ar_buffer = mmap(0, len, PROT_READ, MAP_PRIVATE, fd, 0);
394 grobian 1.1 while ((m = ar_next(ar)) != NULL) {
395     fobj = readmacho_buffer(m->name, ar_buffer + lseek(fd, 0, SEEK_CUR), m->size);
396     if (fobj) {
397     walk = fobj;
398     do {
399     scanmacho_fatobj(walk);
400     } while (walk->next != NULL && (walk = walk->next));
401 grobian 1.5 fobj->data = NULL;
402 grobian 1.1 unreadmacho(fobj);
403     }
404     }
405     munmap(ar_buffer, len);
406    
407     return 0;
408     }
409     /* scan a file which may be an Mach-O or an archive or some other
410     * magical beast */
411     static int scanmacho_file(const char *filename, const struct stat *st_cache)
412     {
413     const struct stat *st = st_cache;
414     struct stat symlink_st;
415     int fd;
416    
417     /* always handle regular files and handle symlinked files if no -y */
418     if (S_ISLNK(st->st_mode)) {
419     if (!scan_symlink)
420     return 1;
421     stat(filename, &symlink_st);
422     st = &symlink_st;
423     }
424    
425     if (!S_ISREG(st->st_mode)) {
426     if (be_verbose > 2) printf("%s: skipping non-file\n", filename);
427     return 1;
428     }
429    
430     if (match_perms) {
431     if ((st->st_mode | match_perms) != st->st_mode)
432     return 1;
433     }
434     if ((fd = open(filename, O_RDONLY)) == -1)
435     return 1;
436    
437     if (scanmacho_fat(filename, fd, st->st_size) == 1 && scan_archives)
438     /* if it isn't an Mach-O, maybe it's an .a archive */
439     scanmacho_archive(filename, fd, st->st_size);
440    
441     close(fd);
442     return 0;
443     }
444    
445 grobian 1.4 /* scan a directory for Mach-O files and print when we find one */
446 grobian 1.1 static int scanmacho_dir(const char *path)
447     {
448     register DIR *dir;
449     register struct dirent *dentry;
450     struct stat st_top, st;
451     char buf[__PAX_UTILS_PATH_MAX];
452     size_t pathlen = 0, len = 0;
453     int ret = 0;
454    
455     /* make sure path exists */
456     if (lstat(path, &st_top) == -1) {
457     if (be_verbose > 2) printf("%s: does not exist\n", path);
458     return 1;
459     }
460    
461     /* ok, if it isn't a directory, assume we can open it */
462     if (!S_ISDIR(st_top.st_mode)) {
463     return scanmacho_file(path, &st_top);
464     }
465    
466     /* now scan the dir looking for fun stuff */
467     if ((dir = opendir(path)) == NULL) {
468     warnf("could not opendir %s: %s", path, strerror(errno));
469     return 1;
470     }
471     if (be_verbose > 1) printf("%s: scanning dir\n", path);
472    
473     pathlen = strlen(path);
474     while ((dentry = readdir(dir))) {
475     if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
476     continue;
477     len = (pathlen + 1 + strlen(dentry->d_name) + 1);
478     if (len >= sizeof(buf)) {
479     warnf("Skipping '%s': len > sizeof(buf); %lu > %lu\n", path,
480     (unsigned long)len, (unsigned long)sizeof(buf));
481     continue;
482     }
483     snprintf(buf, sizeof(buf), "%s%s%s", path, (path[pathlen-1] == '/') ? "" : "/", dentry->d_name);
484     if (lstat(buf, &st) != -1) {
485     if (S_ISREG(st.st_mode))
486     ret = scanmacho_file(buf, &st);
487     else if (dir_recurse && S_ISDIR(st.st_mode)) {
488     if (dir_crossmount || (st_top.st_dev == st.st_dev))
489     ret = scanmacho_dir(buf);
490     }
491     }
492     }
493     closedir(dir);
494     return ret;
495     }
496    
497     static int scanmacho_from_file(const char *filename)
498     {
499     FILE *fp = NULL;
500     char *p;
501     char path[__PAX_UTILS_PATH_MAX];
502     int ret = 0;
503    
504     if (strcmp(filename, "-") == 0)
505     fp = stdin;
506     else if ((fp = fopen(filename, "r")) == NULL)
507     return 1;
508    
509     while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) {
510     if ((p = strchr(path, '\n')) != NULL)
511     *p = 0;
512     search_path = path;
513     ret = scanmacho_dir(path);
514     }
515     if (fp != stdin)
516     fclose(fp);
517     return ret;
518     }
519    
520     /* scan env PATH for paths */
521     static void scanelf_envpath(void)
522     {
523     char *path, *p;
524    
525     path = getenv("PATH");
526     if (!path)
527     err("PATH is not set in your env !");
528     path = xstrdup(path);
529    
530     while ((p = strrchr(path, ':')) != NULL) {
531     scanmacho_dir(p + 1);
532     *p = 0;
533     }
534    
535     free(path);
536     }
537    
538     /* 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 */
539     #define PARSE_FLAGS "pRmyAnibSN:gE:M:DO:ZaqvF:f:o:BhV"
540     #define a_argument required_argument
541     static struct option const long_opts[] = {
542     {"path", no_argument, NULL, 'p'},
543     {"recursive", no_argument, NULL, 'R'},
544     {"mount", no_argument, NULL, 'm'},
545     {"symlink", no_argument, NULL, 'y'},
546     {"archives", no_argument, NULL, 'A'},
547     {"needed", no_argument, NULL, 'n'},
548     {"interp", no_argument, NULL, 'i'},
549     {"bind", no_argument, NULL, 'b'},
550     {"soname", no_argument, NULL, 'S'},
551     {"lib", a_argument, NULL, 'N'},
552     {"gmatch", no_argument, NULL, 'g'},
553     {"etype", a_argument, NULL, 'E'},
554     {"bits", a_argument, NULL, 'M'},
555     {"endian", no_argument, NULL, 'D'},
556     {"perms", a_argument, NULL, 'O'},
557     {"size", no_argument, NULL, 'Z'},
558     {"all", no_argument, NULL, 'a'},
559     {"quiet", no_argument, NULL, 'q'},
560     {"verbose", no_argument, NULL, 'v'},
561     {"format", a_argument, NULL, 'F'},
562     {"from", a_argument, NULL, 'f'},
563     {"file", a_argument, NULL, 'o'},
564     {"nobanner", no_argument, NULL, 'B'},
565     {"help", no_argument, NULL, 'h'},
566     {"version", no_argument, NULL, 'V'},
567     {NULL, no_argument, NULL, 0x0}
568     };
569    
570     static const char *opts_help[] = {
571     "Scan all directories in PATH environment",
572     "Scan directories recursively",
573     "Don't recursively cross mount points",
574     "Don't scan symlinks",
575     "Scan archives (.a files)",
576     "Print LC_LOAD_DYLIB information (ELF: NEEDED)",
577     "Print LC_LOAD_DYLINKER information (ELF: INTERP)",
578     "Print flags from mach_header (ELF: BIND)",
579     "Print LC_ID_DYLIB information (ELF: SONAME)",
580     "Find a specified library",
581     "Use strncmp to match libraries. (use with -N)",
582     "Print only Mach-O files matching mach_header\n"
583     " MH_OBJECT,MH_EXECUTE ... (ELF: etype)",
584     "Print only Mach-O files matching numeric bits",
585     "Print Endianness",
586     "Print only Mach-O files matching octal permissions",
587     "Print Mach-O file size",
588     "Print all scanned info (-F\"%o %O %D %b %F\")\n",
589     "Only output 'bad' things",
590     "Be verbose (can be specified more than once)",
591     "Use specified format for output",
592     "Read input stream from a filename",
593     "Write output stream to a filename",
594     "Don't display the header",
595     "Print this help and exit",
596     "Print version and exit",
597     NULL
598     };
599    
600     /* display usage and exit */
601     static void usage(int status)
602     {
603     unsigned long i;
604     printf("* Scan Mach-O binaries for stuff\n\n"
605     "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0);
606     printf("Options: -[%s]\n", PARSE_FLAGS);
607     for (i = 0; long_opts[i].name; ++i)
608     if (long_opts[i].has_arg == no_argument)
609     printf(" -%c, --%-14s* %s\n", long_opts[i].val,
610     long_opts[i].name, opts_help[i]);
611     else
612     printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val,
613     long_opts[i].name, opts_help[i]);
614    
615     puts("\nFor more information, see the scanmacho(1) manpage");
616     exit(status);
617     }
618    
619     /* parse command line arguments and preform needed actions */
620     static int parseargs(int argc, char *argv[])
621     {
622     int i;
623     const char *from_file = NULL;
624     int ret = 0;
625    
626     opterr = 0;
627     while ((i = getopt_long(argc, argv, PARSE_FLAGS, long_opts, NULL)) != -1) {
628     switch (i) {
629    
630     case 'V':
631     printf("pax-utils-%s: %s compiled %s\n%s\n"
632     "%s written for Gentoo by <solar, vapier and grobian @ gentoo.org>\n",
633     VERSION, __FILE__, __DATE__, rcsid, argv0);
634     exit(EXIT_SUCCESS);
635     break;
636     case 'h': usage(EXIT_SUCCESS); break;
637     case 'f':
638     if (from_file) warn("You prob don't want to specify -f twice");
639     from_file = optarg;
640     break;
641     case 'E':
642     strncpy(match_etypes, optarg, sizeof(match_etypes));
643     break;
644     case 'M':
645     match_bits = atoi(optarg);
646     break;
647     case 'O':
648     if (sscanf(optarg, "%o", &match_perms) == (-1))
649     match_bits = 0;
650     break;
651     case 'o': {
652     if (freopen(optarg, "w", stdout) == NULL)
653     err("Could not open output stream '%s': %s", optarg, strerror(errno));
654     break;
655     }
656     case 'N': {
657     if (find_lib) warn("You prob don't want to specify -N twice");
658     find_lib = optarg;
659     break;
660     }
661     case 'F': {
662     if (out_format) warn("You prob don't want to specify -F twice");
663     out_format = optarg;
664     break;
665     }
666     case 'Z': show_size = 1; break;
667     case 'g': g_match = 1; break;
668     case 'y': scan_symlink = 0; break;
669     case 'A': scan_archives = 1; break;
670     case 'B': show_banner = 0; break;
671     case 'p': scan_envpath = 1; break;
672     case 'R': dir_recurse = 1; break;
673     case 'm': dir_crossmount = 0; break;
674     case 'n': show_needed = 1; break;
675     case 'i': show_interp = 1; break;
676     case 'b': show_bind = 1; break;
677     case 'S': show_soname = 1; break;
678     case 'q': be_quiet = 1; break;
679     case 'v': be_verbose = (be_verbose % 20) + 1; break;
680     case 'a': show_perms = show_endian = show_bind = 1; break;
681     case 'D': show_endian = 1; break;
682     case ':':
683     err("Option '%c' is missing parameter", optopt);
684     case '?':
685     err("Unknown option '%c' or argument missing", optopt);
686     default:
687     err("Unhandled option '%c'; please report this", i);
688     }
689     }
690     /* let the format option override all other options */
691     if (out_format) {
692     show_needed = show_interp = show_bind = show_soname = \
693     show_perms = show_endian = show_size = 0;
694     for (i = 0; out_format[i]; ++i) {
695     if (!IS_MODIFIER(out_format[i])) continue;
696    
697     switch (out_format[++i]) {
698     case '+': break;
699     case '%': break;
700     case '#': break;
701     case 'F': break;
702     case 'p': break;
703     case 'f': break;
704     case 'k': break;
705     case 'N': break;
706     case 'o': break;
707     case 'a': break;
708     case 'M': break;
709     case 'Z': show_size = 1; break;
710     case 'D': show_endian = 1; break;
711     case 'O': show_perms = 1; break;
712     case 'n': show_needed = 1; break;
713     case 'i': show_interp = 1; break;
714     case 'b': show_bind = 1; break;
715     case 'S': show_soname = 1; break;
716     default:
717     err("Invalid format specifier '%c' (byte %i)",
718     out_format[i], i+1);
719     }
720     }
721    
722     /* construct our default format */
723     } else {
724     size_t fmt_len = 30;
725     out_format = xmalloc(sizeof(char) * fmt_len);
726     *out_format = '\0';
727 grobian 1.3 if (!be_quiet) xstrcat(&out_format, "%a ", &fmt_len);
728 grobian 1.1 if (!be_quiet) xstrcat(&out_format, "%o ", &fmt_len);
729     if (show_perms) xstrcat(&out_format, "%O ", &fmt_len);
730     if (show_size) xstrcat(&out_format, "%Z ", &fmt_len);
731     if (show_endian) xstrcat(&out_format, "%D ", &fmt_len);
732     if (show_needed) xstrcat(&out_format, "%n ", &fmt_len);
733     if (show_interp) xstrcat(&out_format, "%i ", &fmt_len);
734     if (show_bind) xstrcat(&out_format, "%b ", &fmt_len);
735     if (show_soname) xstrcat(&out_format, "%S ", &fmt_len);
736     if (find_lib) xstrcat(&out_format, "%N ", &fmt_len);
737     if (!be_quiet) xstrcat(&out_format, "%F ", &fmt_len);
738     }
739     if (be_verbose > 2) printf("Format: %s\n", out_format);
740    
741     /* now lets actually do the scanning */
742     if (scan_envpath)
743     scanelf_envpath();
744     if (!from_file && optind == argc && ttyname(0) == NULL && !scan_envpath)
745     from_file = "-";
746     if (from_file) {
747     scanmacho_from_file(from_file);
748     from_file = *argv;
749     }
750     if (optind == argc && !scan_envpath && !from_file)
751     err("Nothing to scan !?");
752     while (optind < argc) {
753     search_path = argv[optind++];
754     ret = scanmacho_dir(search_path);
755     }
756    
757     return ret;
758     }
759    
760     int main(int argc, char *argv[])
761     {
762     int ret;
763     if (argc < 2)
764     usage(EXIT_FAILURE);
765     ret = parseargs(argc, argv);
766     fclose(stdout);
767     return ret;
768     }

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