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#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <selinux/selinux.h>
#include <selinux/get_context_list.h>
static __attribute__ ((__noreturn__)) void usage(const char *name, const char *detail, int rc)
{
fprintf(stderr, "usage: %s [-l level] user [context]\n", name);
if (detail)
fprintf(stderr, "%s: %s\n", name, detail);
exit(rc);
}
int main(int argc, char **argv)
{
char **list;
const char *cur_context, *user;
char *cur_con = NULL, *level = NULL;
int ret, i, opt;
while ((opt = getopt(argc, argv, "l:")) > 0) {
switch (opt) {
case 'l':
free(level);
level = strdup(optarg);
if (!level) {
fprintf(stderr, "memory allocation failure: %d(%s)\n",
errno, strerror(errno));
return 3;
}
break;
default:
usage(argv[0], "invalid option", 1);
}
}
if (((argc - optind) < 1) || ((argc - optind) > 2))
usage(argv[0], "invalid number of arguments", 2);
/* If selinux isn't available, bail out. */
if (!is_selinux_enabled()) {
fprintf(stderr,
"getconlist may be used only on a SELinux kernel.\n");
free(level);
return 1;
}
user = argv[optind];
/* If a context wasn't passed, use the current context. */
if (((argc - optind) < 2)) {
if (getcon(&cur_con) < 0) {
fprintf(stderr, "Couldn't get current context: %s\n", strerror(errno));
free(level);
return 2;
}
cur_context = cur_con;
} else {
cur_context = argv[optind + 1];
if (security_check_context(cur_context) != 0) {
fprintf(stderr, "Given context '%s' is invalid.\n", cur_context);
free(level);
return 3;
}
}
/* Get the list and print it */
if (level)
ret =
get_ordered_context_list_with_level(user, level,
cur_context, &list);
else
ret = get_ordered_context_list(user, cur_context, &list);
if (ret != -1) {
for (i = 0; list[i]; i++)
puts(list[i]);
freeconary(list);
} else {
fprintf(stderr, "get_ordered_context_list%s failure: %d(%s)\n",
level ? "_with_level" : "", errno, strerror(errno));
free(cur_con);
free(level);
return 4;
}
free(cur_con);
free(level);
return 0;
}
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