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/*
* sestatus -- displays the status of SELinux
*
* Ported to busybox: KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* Copyright (C) KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
//config:config SESTATUS
//config: bool "sestatus (12 kb)"
//config: default n
//config: depends on SELINUX
//config: help
//config: Displays the status of SELinux.
//applet:IF_SESTATUS(APPLET(sestatus, BB_DIR_USR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_SESTATUS) += sestatus.o
//usage:#define sestatus_trivial_usage
//usage: "[-vb]"
//usage:#define sestatus_full_usage "\n\n"
//usage: " -v Verbose"
//usage: "\n -b Display current state of booleans"
#include "libbb.h"
extern char *selinux_mnt;
#define OPT_VERBOSE (1 << 0)
#define OPT_BOOLEAN (1 << 1)
#define COL_FMT "%-31s "
static void display_boolean(void)
{
char **bools;
int i, active, pending, nbool;
if (security_get_boolean_names(&bools, &nbool) < 0)
return;
puts("\nPolicy booleans:");
for (i = 0; i < nbool; i++) {
active = security_get_boolean_active(bools[i]);
if (active < 0)
goto skip;
pending = security_get_boolean_pending(bools[i]);
if (pending < 0)
goto skip;
printf(COL_FMT "%s",
bools[i], active == 0 ? "off" : "on");
if (active != pending)
printf(" (%sactivate pending)", pending == 0 ? "in" : "");
bb_putchar('\n');
skip:
if (ENABLE_FEATURE_CLEAN_UP)
free(bools[i]);
}
if (ENABLE_FEATURE_CLEAN_UP)
free(bools);
}
static void read_config(char **pc, int npc, char **fc, int nfc)
{
char *buf;
parser_t *parser;
int pc_ofs = 0, fc_ofs = 0, section = -1;
pc[0] = fc[0] = NULL;
parser = config_open("/etc/sestatus.conf");
while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
if (strcmp(buf, "[process]") == 0) {
section = 1;
} else if (strcmp(buf, "[files]") == 0) {
section = 2;
} else {
if (section == 1 && pc_ofs < npc -1) {
pc[pc_ofs++] = xstrdup(buf);
pc[pc_ofs] = NULL;
} else if (section == 2 && fc_ofs < nfc - 1) {
fc[fc_ofs++] = xstrdup(buf);
fc[fc_ofs] = NULL;
}
}
}
config_close(parser);
}
static void display_verbose(void)
{
security_context_t con, _con;
char *fc[50], *pc[50], *cterm;
pid_t *pidList;
int i;
read_config(pc, ARRAY_SIZE(pc), fc, ARRAY_SIZE(fc));
/* process contexts */
puts("\nProcess contexts:");
/* current context */
if (getcon(&con) == 0) {
printf(COL_FMT "%s\n", "Current context:", con);
if (ENABLE_FEATURE_CLEAN_UP)
freecon(con);
}
/* /sbin/init context */
if (getpidcon(1, &con) == 0) {
printf(COL_FMT "%s\n", "Init context:", con);
if (ENABLE_FEATURE_CLEAN_UP)
freecon(con);
}
/* [process] context */
for (i = 0; pc[i] != NULL; i++) {
pidList = find_pid_by_name(bb_basename(pc[i]));
if (pidList[0] > 0 && getpidcon(pidList[0], &con) == 0) {
printf(COL_FMT "%s\n", pc[i], con);
if (ENABLE_FEATURE_CLEAN_UP)
freecon(con);
}
if (ENABLE_FEATURE_CLEAN_UP)
free(pidList);
}
/* files contexts */
puts("\nFile contexts:");
cterm = xmalloc_ttyname(0);
//FIXME: if cterm == NULL, we segfault!??
puts(cterm);
if (cterm && lgetfilecon(cterm, &con) >= 0) {
printf(COL_FMT "%s\n", "Controlling term:", con);
if (ENABLE_FEATURE_CLEAN_UP)
freecon(con);
}
for (i = 0; fc[i] != NULL; i++) {
struct stat stbuf;
if (lgetfilecon(fc[i], &con) < 0)
continue;
if (lstat(fc[i], &stbuf) == 0) {
if (S_ISLNK(stbuf.st_mode)) {
if (getfilecon(fc[i], &_con) >= 0) {
printf(COL_FMT "%s -> %s\n", fc[i], _con, con);
if (ENABLE_FEATURE_CLEAN_UP)
freecon(_con);
}
} else {
printf(COL_FMT "%s\n", fc[i], con);
}
}
if (ENABLE_FEATURE_CLEAN_UP)
freecon(con);
}
}
int sestatus_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int sestatus_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opts;
const char *pol_path;
int rc;
opt_complementary = "?0"; /* no arguments are required. */
opts = getopt32(argv, "vb");
/* SELinux status: line */
rc = is_selinux_enabled();
if (rc < 0)
goto error;
printf(COL_FMT "%s\n", "SELinux status:",
rc == 1 ? "enabled" : "disabled");
/* SELinuxfs mount: line */
if (!selinux_mnt)
goto error;
printf(COL_FMT "%s\n", "SELinuxfs mount:",
selinux_mnt);
/* Current mode: line */
rc = security_getenforce();
if (rc < 0)
goto error;
printf(COL_FMT "%s\n", "Current mode:",
rc == 0 ? "permissive" : "enforcing");
/* Mode from config file: line */
if (selinux_getenforcemode(&rc) != 0)
goto error;
printf(COL_FMT "%s\n", "Mode from config file:",
rc < 0 ? "disabled" : (rc == 0 ? "permissive" : "enforcing"));
/* Policy version: line */
rc = security_policyvers();
if (rc < 0)
goto error;
printf(COL_FMT "%u\n", "Policy version:", rc);
/* Policy from config file: line */
pol_path = selinux_policy_root();
if (!pol_path)
goto error;
printf(COL_FMT "%s\n", "Policy from config file:",
bb_basename(pol_path));
if (opts & OPT_BOOLEAN)
display_boolean();
if (opts & OPT_VERBOSE)
display_verbose();
return 0;
error:
bb_perror_msg_and_die("libselinux returns unknown state");
}
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