blob: f0338927e35fe5d2d5719408dd281fc8181c7eeb
1 | /* matchpathcon - get the default security context for the specified |
2 | * path from the file contexts configuration. |
3 | * based on libselinux-1.32 |
4 | * Port to busybox: KaiGai Kohei <kaigai@kaigai.gr.jp> |
5 | * |
6 | * Licensed under GPLv2, see file LICENSE in this source tree. |
7 | */ |
8 | |
9 | //usage:#define matchpathcon_trivial_usage |
10 | //usage: "[-n] [-N] [-f file_contexts_file] [-p prefix] [-V]" |
11 | //usage:#define matchpathcon_full_usage "\n\n" |
12 | //usage: " -n Don't display path" |
13 | //usage: "\n -N Don't use translations" |
14 | //usage: "\n -f Use alternate file_context file" |
15 | //usage: "\n -p Use prefix to speed translations" |
16 | //usage: "\n -V Verify file context on disk matches defaults" |
17 | |
18 | #include "libbb.h" |
19 | |
20 | static int print_matchpathcon(char *path, int noprint) |
21 | { |
22 | char *buf; |
23 | int rc = matchpathcon(path, 0, &buf); |
24 | if (rc < 0) { |
25 | bb_perror_msg("matchpathcon(%s) failed", path); |
26 | return 1; |
27 | } |
28 | if (!noprint) |
29 | printf("%s\t%s\n", path, buf); |
30 | else |
31 | puts(buf); |
32 | |
33 | freecon(buf); |
34 | return 0; |
35 | } |
36 | |
37 | #define OPT_NOT_PRINT (1<<0) /* -n */ |
38 | #define OPT_NOT_TRANS (1<<1) /* -N */ |
39 | #define OPT_FCONTEXT (1<<2) /* -f */ |
40 | #define OPT_PREFIX (1<<3) /* -p */ |
41 | #define OPT_VERIFY (1<<4) /* -V */ |
42 | |
43 | int matchpathcon_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
44 | int matchpathcon_main(int argc UNUSED_PARAM, char **argv) |
45 | { |
46 | int error = 0; |
47 | unsigned opts; |
48 | char *fcontext, *prefix, *path; |
49 | |
50 | opt_complementary = "-1" /* at least one param reqd */ |
51 | ":?:f--p:p--f"; /* mutually exclusive */ |
52 | opts = getopt32(argv, "nNf:p:V", &fcontext, &prefix); |
53 | argv += optind; |
54 | |
55 | if (opts & OPT_NOT_TRANS) { |
56 | set_matchpathcon_flags(MATCHPATHCON_NOTRANS); |
57 | } |
58 | if (opts & OPT_FCONTEXT) { |
59 | if (matchpathcon_init(fcontext)) |
60 | bb_perror_msg_and_die("error while processing %s", fcontext); |
61 | } |
62 | if (opts & OPT_PREFIX) { |
63 | if (matchpathcon_init_prefix(NULL, prefix)) |
64 | bb_perror_msg_and_die("error while processing %s", prefix); |
65 | } |
66 | |
67 | #ifdef ANDROID |
68 | if (!(opts & (OPT_FCONTEXT | OPT_PREFIX))) { |
69 | matchpathcon_init(selinux_file_contexts_path()); |
70 | } |
71 | #endif |
72 | while ((path = *argv++) != NULL) { |
73 | security_context_t con; |
74 | int rc; |
75 | |
76 | if (!(opts & OPT_VERIFY)) { |
77 | error += print_matchpathcon(path, opts & OPT_NOT_PRINT); |
78 | continue; |
79 | } |
80 | |
81 | if (selinux_file_context_verify(path, 0)) { |
82 | printf("%s verified\n", path); |
83 | continue; |
84 | } |
85 | |
86 | if (opts & OPT_NOT_TRANS) |
87 | rc = lgetfilecon_raw(path, &con); |
88 | else |
89 | rc = lgetfilecon(path, &con); |
90 | |
91 | if (rc >= 0) { |
92 | printf("%s has context %s, should be ", path, con); |
93 | error += print_matchpathcon(path, 1); |
94 | freecon(con); |
95 | continue; |
96 | } |
97 | printf("actual context unknown: %s, should be ", strerror(errno)); |
98 | error += print_matchpathcon(path, 1); |
99 | } |
100 | matchpathcon_fini(); |
101 | return error; |
102 | } |
103 |