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