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109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/* matchpathcon - get the default security context for the specified
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* path from the file contexts configuration.
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* based on libselinux-1.32
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* Port to busybox: KaiGai Kohei <kaigai@kaigai.gr.jp>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//config:config MATCHPATHCON
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//config: bool "matchpathcon"
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//config: default n
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//config: depends on SELINUX
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//config: help
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//config: Enable support to get default security context of the
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//config: specified path from the file contexts configuration.
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//applet:IF_MATCHPATHCON(APPLET(matchpathcon, BB_DIR_USR_SBIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_MATCHPATHCON) += matchpathcon.o
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//usage:#define matchpathcon_trivial_usage
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//usage: "[-n] [-N] [-f file_contexts_file] [-p prefix] [-V]"
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//usage:#define matchpathcon_full_usage "\n\n"
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//usage: " -n Don't display path"
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//usage: "\n -N Don't use translations"
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//usage: "\n -f Use alternate file_context file"
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//usage: "\n -p Use prefix to speed translations"
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//usage: "\n -V Verify file context on disk matches defaults"
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#include "libbb.h"
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static int print_matchpathcon(char *path, int noprint)
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{
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char *buf;
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int rc = matchpathcon(path, 0, &buf);
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if (rc < 0) {
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bb_perror_msg("matchpathcon(%s) failed", path);
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return 1;
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}
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if (!noprint)
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printf("%s\t%s\n", path, buf);
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else
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puts(buf);
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freecon(buf);
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return 0;
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}
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#define OPT_NOT_PRINT (1<<0) /* -n */
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#define OPT_NOT_TRANS (1<<1) /* -N */
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#define OPT_FCONTEXT (1<<2) /* -f */
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#define OPT_PREFIX (1<<3) /* -p */
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#define OPT_VERIFY (1<<4) /* -V */
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int matchpathcon_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int matchpathcon_main(int argc UNUSED_PARAM, char **argv)
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{
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int error = 0;
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unsigned opts;
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char *fcontext, *prefix, *path;
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opt_complementary = "-1" /* at least one param reqd */
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":?:f--p:p--f"; /* mutually exclusive */
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opts = getopt32(argv, "nNf:p:V", &fcontext, &prefix);
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argv += optind;
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if (opts & OPT_NOT_TRANS) {
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set_matchpathcon_flags(MATCHPATHCON_NOTRANS);
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}
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if (opts & OPT_FCONTEXT) {
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if (matchpathcon_init(fcontext))
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bb_perror_msg_and_die("error while processing %s", fcontext);
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}
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if (opts & OPT_PREFIX) {
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if (matchpathcon_init_prefix(NULL, prefix))
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bb_perror_msg_and_die("error while processing %s", prefix);
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}
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while ((path = *argv++) != NULL) {
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security_context_t con;
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int rc;
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if (!(opts & OPT_VERIFY)) {
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error += print_matchpathcon(path, opts & OPT_NOT_PRINT);
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continue;
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}
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if (selinux_file_context_verify(path, 0)) {
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printf("%s verified\n", path);
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continue;
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}
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if (opts & OPT_NOT_TRANS)
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rc = lgetfilecon_raw(path, &con);
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else
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rc = lgetfilecon(path, &con);
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if (rc >= 0) {
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printf("%s has context %s, should be ", path, con);
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error += print_matchpathcon(path, 1);
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freecon(con);
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continue;
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}
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printf("actual context unknown: %s, should be ", strerror(errno));
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error += print_matchpathcon(path, 1);
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}
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matchpathcon_fini();
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return error;
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}
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