130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <getopt.h>
|
|
#include <errno.h>
|
|
#include <selinux/selinux.h>
|
|
#include <selinux/label.h>
|
|
|
|
static __attribute__ ((__noreturn__)) void usage(const char *progname)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: %s -b backend [-v] [-r] -k key [-t type] [-f file]\n\n"
|
|
"Where:\n\t"
|
|
"-b The backend - \"file\", \"media\", \"x\", \"db\" or "
|
|
"\"prop\"\n\t"
|
|
"-v Validate entries against loaded policy.\n\t"
|
|
"-r Use \"raw\" function.\n\t"
|
|
"-k Lookup key - Depends on backend.\n\t"
|
|
"-t Lookup type - Optional as depends on backend.\n\t"
|
|
"-f Optional file containing the specs (defaults to\n\t"
|
|
" those used by loaded policy).\n\n"
|
|
"Examples:\n\t"
|
|
"%s -v -b file -k /run -t 0\n\t"
|
|
" lookup with validation against the loaded policy, the\n\t"
|
|
" \"file\" backend for path \"/run\" with mode = 0\n\t"
|
|
"%s -r -b x -t 4 -k X11:ButtonPress\n\t"
|
|
" lookup_raw the \"X\" backend for type SELABEL_X_EVENT\n\t"
|
|
" using key \"X11:ButtonPress\"\n\n",
|
|
progname, progname, progname);
|
|
exit(1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int raw = 0, type = 0, backend = 0, rc, opt;
|
|
char *validate = NULL, *key = NULL, *context = NULL, *file = NULL;
|
|
|
|
struct selabel_handle *hnd;
|
|
struct selinux_opt selabel_option[] = {
|
|
{ SELABEL_OPT_PATH, file },
|
|
{ SELABEL_OPT_VALIDATE, validate }
|
|
};
|
|
|
|
if (argc < 3)
|
|
usage(argv[0]);
|
|
|
|
while ((opt = getopt(argc, argv, "b:f:vrk:t:")) > 0) {
|
|
switch (opt) {
|
|
case 'b':
|
|
if (!strcasecmp(optarg, "file")) {
|
|
backend = SELABEL_CTX_FILE;
|
|
} else if (!strcmp(optarg, "media")) {
|
|
backend = SELABEL_CTX_MEDIA;
|
|
} else if (!strcmp(optarg, "x")) {
|
|
backend = SELABEL_CTX_X;
|
|
} else if (!strcmp(optarg, "db")) {
|
|
backend = SELABEL_CTX_DB;
|
|
} else if (!strcmp(optarg, "prop")) {
|
|
backend = SELABEL_CTX_ANDROID_PROP;
|
|
} else if (!strcmp(optarg, "service")) {
|
|
backend = SELABEL_CTX_ANDROID_SERVICE;
|
|
} else {
|
|
fprintf(stderr, "Unknown backend: %s\n",
|
|
optarg);
|
|
usage(argv[0]);
|
|
}
|
|
break;
|
|
case 'f':
|
|
file = optarg;
|
|
break;
|
|
case 'v':
|
|
validate = (char *)1;
|
|
break;
|
|
case 'r':
|
|
raw = 1;
|
|
break;
|
|
case 'k':
|
|
key = optarg;
|
|
break;
|
|
case 't':
|
|
type = atoi(optarg);
|
|
break;
|
|
default:
|
|
usage(argv[0]);
|
|
}
|
|
}
|
|
|
|
selabel_option[0].value = file;
|
|
selabel_option[1].value = validate;
|
|
|
|
hnd = selabel_open(backend, selabel_option, 2);
|
|
if (!hnd) {
|
|
fprintf(stderr, "ERROR: selabel_open - Could not obtain "
|
|
"handle: %s\n",
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
switch (raw) {
|
|
case 1:
|
|
rc = selabel_lookup_raw(hnd, &context, key, type);
|
|
break;
|
|
default:
|
|
rc = selabel_lookup(hnd, &context, key, type);
|
|
}
|
|
selabel_close(hnd);
|
|
|
|
if (rc) {
|
|
switch (errno) {
|
|
case ENOENT:
|
|
fprintf(stderr, "ERROR: selabel_lookup failed to "
|
|
"find a valid context.\n");
|
|
break;
|
|
case EINVAL:
|
|
fprintf(stderr, "ERROR: selabel_lookup failed to "
|
|
"validate context, or key / type are "
|
|
"invalid.\n");
|
|
break;
|
|
default:
|
|
fprintf(stderr, "selabel_lookup ERROR: %s\n",
|
|
strerror(errno));
|
|
}
|
|
} else {
|
|
printf("Default context: %s\n", context);
|
|
freecon(context);
|
|
}
|
|
|
|
return rc;
|
|
}
|