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