1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config WHICH
//config: bool "which (3.8 kb)"
//config: default y
//config: help
//config: which is used to find programs in your PATH and
//config: print out their pathnames.
//applet:IF_WHICH(APPLET_NOFORK(which, which, BB_DIR_USR_BIN, BB_SUID_DROP, which))
//kbuild:lib-$(CONFIG_WHICH) += which.o
//usage:#define which_trivial_usage
//usage: "[COMMAND]..."
//usage:#define which_full_usage "\n\n"
//usage: "Locate a COMMAND"
//usage:
//usage:#define which_example_usage
//usage: "$ which login\n"
//usage: "/bin/login\n"
#include "libbb.h"
int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int which_main(int argc UNUSED_PARAM, char **argv)
{
char *env_path;
int status = 0;
/* This sizeof(): bb_default_root_path is shorter than BB_PATH_ROOT_PATH */
char buf[sizeof(BB_PATH_ROOT_PATH)];
env_path = getenv("PATH");
if (!env_path)
/* env_path must be writable, and must not alloc, so... */
env_path = strcpy(buf, bb_default_root_path);
getopt32(argv, "^" "a" "\0" "-1"/*at least one arg*/);
argv += optind;
do {
int missing = 1;
#if ENABLE_PLATFORM_MINGW32
char *p;
# if ENABLE_FEATURE_SH_STANDALONE
if (strcmp(*argv, "busybox") == 0 &&
is_suffixed_with(bb_busybox_exec_path, "busybox.exe")) {
missing = 0;
puts(bb_busybox_exec_path);
if (!option_mask32) /* -a not set */
break;
}
else if (find_applet_by_name(*argv) >= 0 ||
is_prefixed_with(*argv, "busybox")) {
missing = 0;
puts(*argv);
if (!option_mask32) /* -a not set */
break;
}
# endif
#endif
/* If file contains a slash don't use PATH */
#if !ENABLE_PLATFORM_MINGW32
if (strchr(*argv, '/')) {
#else
if (has_path(*argv)) {
# if ENABLE_FEATURE_SH_STANDALONE
const char *name = bb_basename(*argv);
int is_unix_path = unix_path(*argv);
# endif
*argv = auto_add_system_drive(*argv);
if ((p=auto_win32_extension(*argv)) != NULL) {
missing = 0;
puts(bs_to_slash(p));
}
else
#endif
if (file_is_executable(*argv)) {
missing = 0;
#if ENABLE_PLATFORM_MINGW32
puts(bs_to_slash(auto_string(xstrdup(*argv))));
#else
puts(*argv);
#endif
}
#if ENABLE_PLATFORM_MINGW32 && ENABLE_FEATURE_SH_STANDALONE
else if (is_unix_path && find_applet_by_name(name) >= 0) {
missing = 0;
puts(name);
}
#endif
} else {
char *path;
#if !ENABLE_PLATFORM_MINGW32
char *p;
#endif
path = env_path;
/* NOFORK NB: xmalloc inside find_executable(), must have no allocs above! */
while ((p = find_executable(*argv, &path)) != NULL) {
missing = 0;
#if ENABLE_PLATFORM_MINGW32
puts(bs_to_slash(p));
#else
puts(p);
#endif
free(p);
if (!option_mask32) /* -a not set */
break;
}
}
status |= missing;
} while (*++argv);
return status;
}
|
