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new applets: selinux utils by KaiGai Kohei <kaigai@kaigai.gr.jp>

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This commit is contained in:
Denis Vlasenko 2007-02-06 19:28:50 +00:00
parent b292264bfd
commit d46d3c292e
14 changed files with 361 additions and 10 deletions
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1
Config.in
View File

@ -493,3 +493,4 @@ source procps/Config.in
source shell/Config.in
source sysklogd/Config.in
source runit/Config.in
source selinux/Config.in

1
Makefile
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@ -442,6 +442,7 @@ libs-y := \
networking/udhcp/ \
procps/ \
runit/ \
selinux/ \
shell/ \
sysklogd/ \
util-linux/ \

4
Makefile.flags
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@ -54,4 +54,8 @@ endif
ifeq ($(CONFIG_STATIC),y)
LDFLAGS += -static
endif
ifeq ($(CONFIG_SELINUX),y)
LDFLAGS += -lselinux -lsepol
endif
#LDFLAGS += -nostdlib

5
include/applets.h
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@ -133,7 +133,9 @@ USE_FSCK_MINIX(APPLET_ODDNAME(fsck.minix, fsck_minix, _BB_DIR_SBIN, _BB_SUID_NEV
USE_FTPGET(APPLET_ODDNAME(ftpget, ftpgetput, _BB_DIR_USR_BIN, _BB_SUID_NEVER,ftpget))
USE_FTPPUT(APPLET_ODDNAME(ftpput, ftpgetput, _BB_DIR_USR_BIN, _BB_SUID_NEVER,ftpput))
USE_FUSER(APPLET(fuser, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_GETENFORCE(APPLET(getenforce, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_GETOPT(APPLET(getopt, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_GETSEBOOL(APPLET(getsebool, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_GETTY(APPLET(getty, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_GREP(APPLET(grep, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_GUNZIP(APPLET(gunzip, _BB_DIR_BIN, _BB_SUID_NEVER))
@ -187,6 +189,7 @@ USE_LS(APPLET(ls, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_LSATTR(APPLET(lsattr, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_LSMOD(APPLET(lsmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_UNLZMA(APPLET_ODDNAME(lzmacat, unlzma, _BB_DIR_USR_BIN, _BB_SUID_NEVER, lzmacat))
USE_MATCHPATHCON(APPLET(matchpathcon, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_MAKEDEVS(APPLET(makedevs, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_MD5SUM(APPLET_ODDNAME(md5sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, md5sum))
USE_MDEV(APPLET(mdev, _BB_DIR_SBIN, _BB_SUID_NEVER))
@ -249,10 +252,12 @@ USE_RUNLEVEL(APPLET(runlevel, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_RUNSV(APPLET(runsv, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_RUNSVDIR(APPLET(runsvdir, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_RX(APPLET(rx, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_SELINUXENABLED(APPLET(selinuxenabled, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SED(APPLET(sed, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SEQ(APPLET(seq, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_SETARCH(APPLET(setarch, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SETCONSOLE(APPLET(setconsole, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_SETENFORCE(APPLET(setenforce, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SETKEYCODES(APPLET(setkeycodes, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_SETLOGCONS(APPLET(setlogcons, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SETSID(APPLET(setsid, _BB_DIR_USR_BIN, _BB_SUID_NEVER))

1
include/libbb.h
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@ -592,6 +592,7 @@ extern void run_shell(const char *shell, int loginshell, const char *command, co
extern void renew_current_security_context(void);
extern void set_current_security_context(security_context_t sid);
#endif
extern void selinux_or_die(void);
extern int restricted_shell(const char *shell);
extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw);
extern int correct_password(const struct passwd *pw);

44
include/usage.h
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@ -1013,6 +1013,9 @@
" -6 When using port/proto only search IPv6 space\n" \
" -SIGNAL When used with -k, this signal will be used to kill"
#define getenforce_trivial_usage
#define getenforce_full_usage
#define getopt_trivial_usage \
"[OPTIONS]..."
#define getopt_full_usage \
@ -1047,6 +1050,11 @@
" esac\n" \
"done\n"
#define getsebool_trivial_usage \
"-a or getsebool boolean..."
#define getsebool_full_usage \
" -a Show all SELinux booleans"
#define getty_trivial_usage \
"[OPTIONS]... baud_rate,... line [termtype]"
#define getty_full_usage \
@ -1896,6 +1904,15 @@
"/dev/hda[0-15]\n"
#endif
#define matchpathcon_trivial_usage \
"[-n] [-N] [-f file_contexts_file] [-p prefix] [-V]"
#define matchpathcon_full_usage \
" -n Do not display path" \
"\n -N Do not use translations" \
"\n -f Use alternate file_context file" \
"\n -p Use prefix to speed translations" \
"\n -V Verify file context on disk matches defaults"
#define md5sum_trivial_usage \
"[OPTION] [FILEs...]" \
USE_FEATURE_MD5_SHA1_SUM_CHECK("\n or: md5sum [OPTION] -c [FILE]")
@ -2714,6 +2731,9 @@
"$ echo \"foo\" | sed -e 's/f[a-zA-Z]o/bar/g'\n" \
"bar\n"
#define selinuxenabled_trivial_usage
#define selinuxenabled_full_usage
#define seq_trivial_usage \
"[first [increment]] last"
#define seq_full_usage \
@ -2731,6 +2751,10 @@
"\n\nOptions:\n" \
" -r Reset output to /dev/console"
#define setenforce_trivial_usage \
"[ Enforcing | Permissive | 1 | 0 ]"
#define setenforce_full_usage
#define setkeycodes_trivial_usage \
"SCANCODE KEYCODE ..."
#define setkeycodes_full_usage \
@ -3449,12 +3473,12 @@
#define vconfig_full_usage \
"Create and remove virtual ethernet devices" \
"\n\nOptions:\n" \
" add [interface-name] [vlan_id]\n" \
" rem [vlan-name]\n" \
" set_flag [interface-name] [flag-num] [0 | 1]\n" \
" set_egress_map [vlan-name] [skb_priority] [vlan_qos]\n" \
" set_ingress_map [vlan-name] [skb_priority] [vlan_qos]\n" \
" set_name_type [name-type]"
" add [interface-name] [vlan_id]\n" \
" rem [vlan-name]\n" \
" set_flag [interface-name] [flag-num] [0 | 1]\n" \
" set_egress_map [vlan-name] [skb_priority] [vlan_qos]\n" \
" set_ingress_map [vlan-name] [skb_priority] [vlan_qos]\n" \
" set_name_type [name-type]"
#define vi_trivial_usage \
"[OPTION] [FILE]..."
@ -3569,9 +3593,9 @@
#define zcip_full_usage \
"Manage a ZeroConf IPv4 link-local address" \
"\n\nOptions:\n" \
" -f foreground mode\n" \
" -q quit after address (no daemon)\n" \
" -r 169.254.x.x request this address first\n" \
" -v verbose"
" -f Foreground mode\n" \
" -q Quit after address (no daemon)\n" \
" -r 169.254.x.x Request this address first\n" \
" -v Verbose"
#endif /* __BB_USAGE_H__ */

15
libbb/xfuncs.c
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@ -570,6 +570,21 @@ void xstat(const char *name, struct stat *stat_buf)
bb_perror_msg_and_die("can't stat '%s'", name);
}
// selinux_or_die() - die if SELinux is disabled.
void selinux_or_die(void)
{
#if ENABLE_SELINUX
int rc = is_selinux_enabled();
if (rc == 0) {
bb_error_msg_and_die("SELinux is disabled");
} else if (rc < 0) {
bb_error_msg_and_die("is_selinux_enabled() failed");
}
#else
bb_error_msg_and_die("SELinux support is disabled");
#endif
}
/* It is perfectly ok to pass in a NULL for either width or for
* height, in which case that value will not be set. */
int get_terminal_width_height(const int fd, int *width, int *height)

47
selinux/Config.in Normal file
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@ -0,0 +1,47 @@
#
# For a description of the syntax of this configuration file,
# see scripts/kbuild/config-language.txt.
#
menu "Selinux Utilities"
depends on SELINUX
config GETENFORCE
bool "getenforce"
default n
depends on SELINUX
help
Enable support to get the current mode of SELinux.
config GETSEBOOL
bool "getsebool"
default n
depends on SELINUX
help
Enable support to get SELinux boolean values.
config MATCHPATHCON
bool "matchpathcon"
default n
depends on SELINUX
help
Enable support to get default security context of the
specified path from the file contexts configuration.
config SELINUXENABLED
bool "selinuxenabled"
default n
depends on SELINUX
help
Enable support for this command to be used within shell scripts
to determine if selinux is enabled.
config SETENFORCE
bool "setenforce"
default n
depends on SELINUX
help
Enable support to modify the mode SELinux is running in.
endmenu

13
selinux/Kbuild Normal file
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@ -0,0 +1,13 @@
# Makefile for busybox
#
# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
# Copyright (C) 2007 by KaiGai Kohei <kaigai@kaigai.gr.jp>
#
# Licensed under the GPL v2, see the file LICENSE in this tarball.
lib-y:=
lib-$(CONFIG_GETENFORCE) += getenforce.o
lib-$(CONFIG_GETSEBOOL) += getsebool.o
lib-$(CONFIG_MATCHPATHCON) += matchpathcon.o
lib-$(CONFIG_SELINUXENABLED) += selinuxenabled.o
lib-$(CONFIG_SETENFORCE) += setenforce.o

33
selinux/getenforce.c Normal file
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@ -0,0 +1,33 @@
/*
* getenforce
*
* Based on libselinux 1.33.1
* Port to BusyBox Hiroshi Shinji <shiroshi@my.email.ne.jp>
*
*/
#include "busybox.h"
int getenforce_main(int argc, char **argv)
{
int rc;
rc = is_selinux_enabled();
if (rc < 0)
bb_error_msg_and_die("is_selinux_enabled() failed");
if (rc == 1) {
rc = security_getenforce();
if (rc < 0)
bb_error_msg_and_die("getenforce() failed");
if (rc)
puts("Enforcing");
else
puts("Permissive");
} else {
puts("Disabled");
}
return 0;
}

65
selinux/getsebool.c Normal file
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@ -0,0 +1,65 @@
/*
* getsebool
*
* Based on libselinux 1.33.1
* Port to BusyBox Hiroshi Shinji <shiroshi@my.email.ne.jp>
*
*/
#include "busybox.h"
int getsebool_main(int argc, char **argv)
{
int i, rc = 0, active, pending, len = 0;
char **names;
unsigned opt;
selinux_or_die();
opt = getopt32(argc, argv, "a");
if (opt) { /* -a */
if (argc > 2)
bb_show_usage();
rc = security_get_boolean_names(&names, &len);
if (rc)
bb_perror_msg_and_die("cannot get boolean names");
if (!len) {
puts("No booleans");
return 0;
}
}
if (!len) {
if (argc < 2)
bb_show_usage();
len = argc - 1;
names = xmalloc(sizeof(char *) * len);
for (i = 0; i < len; i++)
names[i] = xstrdup(argv[i + 1]);
}
for (i = 0; i < len; i++) {
active = security_get_boolean_active(names[i]);
if (active < 0) {
bb_error_msg_and_die("error getting active value for %s", names[i]);
}
pending = security_get_boolean_pending(names[i]);
if (pending < 0) {
bb_error_msg_and_die("error getting pending value for %s", names[i]);
}
printf("%s --> %s", names[i], (active ? "on" : "off"));
if (pending != active)
printf(" pending: %s", (pending ? "on" : "off"));
putchar('\n');
}
if (ENABLE_FEATURE_CLEAN_UP) {
for (i = 0; i < len; i++)
free(names[i]);
free(names);
}
return rc;
}

85
selinux/matchpathcon.c Normal file
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@ -0,0 +1,85 @@
/* 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>
*
*/
#include "busybox.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
printf("%s\n", 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)
{
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(argc, argv, "nNf:p:V", &fcontext, &prefix);
argv += optind;
if (opts & OPT_NOT_TRANS) {
set_matchpathcon_flags(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, opt & 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;
}

13
selinux/selinuxenabled.c Normal file
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@ -0,0 +1,13 @@
/*
* selinuxenabled
*
* Based on libselinux 1.33.1
* Port to BusyBox Hiroshi Shinji <shiroshi@my.email.ne.jp>
*
*/
#include "busybox.h"
int selinuxenabled_main(int argc, char **argv)
{
return !is_selinux_enabled();
}

44
selinux/setenforce.c Normal file
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@ -0,0 +1,44 @@
/*
* setenforce
*
* Based on libselinux 1.33.1
* Port to BusyBox Hiroshi Shinji <shiroshi@my.email.ne.jp>
*
*/
#include "busybox.h"
static const smallint setenforce_mode[] = {
0,
1,
0,
1,
};
static const char *const setenforce_cmd[] = {
"0",
"1",
"permissive",
"enforcing",
NULL,
};
int setenforce_main(int argc, char **argv)
{
int i, rc;
if (argc != 2)
bb_show_usage();
selinux_or_die();
for (i = 0; setenforce_cmd[i]; i++) {
if (strcasecmp(argv[1], setenforce_cmd[i]) != 0)
continue;
rc = security_setenforce(setenforce_mode[i]);
if (rc < 0)
bb_perror_msg_and_die("setenforce() failed");
return 0;
}
bb_show_usage();
}