1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Which implementation for busybox
|
---|
4 | *
|
---|
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
---|
6 | * Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu>
|
---|
7 | *
|
---|
8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
9 | *
|
---|
10 | * Based on which from debianutils
|
---|
11 | */
|
---|
12 |
|
---|
13 | #include "libbb.h"
|
---|
14 |
|
---|
15 | int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
16 | int which_main(int argc UNUSED_PARAM, char **argv)
|
---|
17 | {
|
---|
18 | IF_DESKTOP(int opt;)
|
---|
19 | int status = EXIT_SUCCESS;
|
---|
20 | char *path;
|
---|
21 | char *p;
|
---|
22 |
|
---|
23 | opt_complementary = "-1"; /* at least one argument */
|
---|
24 | IF_DESKTOP(opt =) getopt32(argv, "a");
|
---|
25 | argv += optind;
|
---|
26 |
|
---|
27 | /* This matches what is seen on e.g. ubuntu.
|
---|
28 | * "which" there is a shell script. */
|
---|
29 | path = getenv("PATH");
|
---|
30 | if (!path) {
|
---|
31 | path = (char*)bb_PATH_root_path;
|
---|
32 | putenv(path);
|
---|
33 | path += 5; /* skip "PATH=" */
|
---|
34 | }
|
---|
35 |
|
---|
36 | do {
|
---|
37 | #if ENABLE_DESKTOP
|
---|
38 | /* Much bloat just to support -a */
|
---|
39 | if (strchr(*argv, '/')) {
|
---|
40 | if (execable_file(*argv)) {
|
---|
41 | puts(*argv);
|
---|
42 | continue;
|
---|
43 | }
|
---|
44 | status = EXIT_FAILURE;
|
---|
45 | } else {
|
---|
46 | char *path2 = xstrdup(path);
|
---|
47 | char *tmp = path2;
|
---|
48 |
|
---|
49 | p = find_execable(*argv, &tmp);
|
---|
50 | if (!p)
|
---|
51 | status = EXIT_FAILURE;
|
---|
52 | else {
|
---|
53 | print:
|
---|
54 | puts(p);
|
---|
55 | free(p);
|
---|
56 | if (opt) {
|
---|
57 | /* -a: show matches in all PATH components */
|
---|
58 | if (tmp) {
|
---|
59 | p = find_execable(*argv, &tmp);
|
---|
60 | if (p)
|
---|
61 | goto print;
|
---|
62 | }
|
---|
63 | }
|
---|
64 | }
|
---|
65 | free(path2);
|
---|
66 | }
|
---|
67 | #else
|
---|
68 | /* Just ignoring -a */
|
---|
69 | if (strchr(*argv, '/')) {
|
---|
70 | if (execable_file(*argv)) {
|
---|
71 | puts(*argv);
|
---|
72 | continue;
|
---|
73 | }
|
---|
74 | } else {
|
---|
75 | char *path2 = xstrdup(path);
|
---|
76 | char *tmp = path2;
|
---|
77 | p = find_execable(*argv, &tmp);
|
---|
78 | free(path2);
|
---|
79 | if (p) {
|
---|
80 | puts(p);
|
---|
81 | free(p);
|
---|
82 | continue;
|
---|
83 | }
|
---|
84 | }
|
---|
85 | status = EXIT_FAILURE;
|
---|
86 | #endif
|
---|
87 | } while (*(++argv) != NULL);
|
---|
88 |
|
---|
89 | fflush_stdout_and_exit(status);
|
---|
90 | }
|
---|