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Administrator
Magisk
Commits
d739dcac
Commit
d739dcac
authored
Apr 11, 2020
by
topjohnwu
Browse files
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Plain Diff
Remove dependency on magisk.hpp in libutils
parent
cdd4cb8e
Show whitespace changes
Inline
Side-by-side
Showing
3 changed files
with
103 additions
and
104 deletions
+103
-104
Android.mk
native/jni/Android.mk
+1
-0
restorecon.cpp
native/jni/core/restorecon.cpp
+100
-0
selinux.cpp
native/jni/utils/selinux.cpp
+2
-104
No files found.
native/jni/Android.mk
View file @
d739dcac
...
...
@@ -19,6 +19,7 @@ LOCAL_SRC_FILES := \
core/socket.cpp \
core/db.cpp \
core/scripting.cpp \
core/restorecon.cpp \
magiskhide/magiskhide.cpp \
magiskhide/proc_monitor.cpp \
magiskhide/hide_utils.cpp \
...
...
native/jni/core/restorecon.cpp
0 → 100644
View file @
d739dcac
#include <string_view>
#include <magisk.hpp>
#include <selinux.hpp>
#include <utils.hpp>
using
namespace
std
;
#define UNLABEL_CON "u:object_r:unlabeled:s0"
#define SYSTEM_CON "u:object_r:system_file:s0"
#define ADB_CON "u:object_r:adb_data_file:s0"
#define ROOT_CON "u:object_r:rootfs:s0"
#define MAGISK_CON "u:object_r:" SEPOL_FILE_DOMAIN ":s0"
static
void
restore_syscon
(
int
dirfd
)
{
struct
dirent
*
entry
;
DIR
*
dir
;
char
*
con
;
fgetfilecon
(
dirfd
,
&
con
);
if
(
strlen
(
con
)
==
0
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
fsetfilecon
(
dirfd
,
SYSTEM_CON
);
freecon
(
con
);
dir
=
xfdopendir
(
dirfd
);
while
((
entry
=
xreaddir
(
dir
)))
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
int
fd
=
openat
(
dirfd
,
entry
->
d_name
,
O_RDONLY
|
O_CLOEXEC
);
if
(
entry
->
d_type
==
DT_DIR
)
{
restore_syscon
(
fd
);
}
else
if
(
entry
->
d_type
==
DT_REG
)
{
fgetfilecon
(
fd
,
&
con
);
if
(
con
[
0
]
==
'\0'
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
fsetfilecon
(
fd
,
SYSTEM_CON
);
freecon
(
con
);
}
else
if
(
entry
->
d_type
==
DT_LNK
)
{
getfilecon_at
(
dirfd
,
entry
->
d_name
,
&
con
);
if
(
con
[
0
]
==
'\0'
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
setfilecon_at
(
dirfd
,
entry
->
d_name
,
con
);
freecon
(
con
);
}
close
(
fd
);
}
}
static
void
restore_magiskcon
(
int
dirfd
)
{
struct
dirent
*
entry
;
DIR
*
dir
;
fsetfilecon
(
dirfd
,
MAGISK_CON
);
fchown
(
dirfd
,
0
,
0
);
dir
=
xfdopendir
(
dirfd
);
while
((
entry
=
xreaddir
(
dir
)))
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
int
fd
=
xopenat
(
dirfd
,
entry
->
d_name
,
O_RDONLY
|
O_CLOEXEC
);
if
(
entry
->
d_type
==
DT_DIR
)
{
restore_magiskcon
(
fd
);
}
else
if
(
entry
->
d_type
)
{
fsetfilecon
(
fd
,
MAGISK_CON
);
fchown
(
fd
,
0
,
0
);
}
close
(
fd
);
}
}
void
restorecon
()
{
int
fd
=
xopen
(
SELINUX_CONTEXT
,
O_WRONLY
|
O_CLOEXEC
);
if
(
write
(
fd
,
ADB_CON
,
sizeof
(
ADB_CON
))
>=
0
)
lsetfilecon
(
SECURE_DIR
,
ADB_CON
);
close
(
fd
);
lsetfilecon
(
MODULEROOT
,
SYSTEM_CON
);
fd
=
xopen
(
MODULEROOT
,
O_RDONLY
|
O_CLOEXEC
);
restore_syscon
(
fd
);
close
(
fd
);
fd
=
xopen
(
DATABIN
,
O_RDONLY
|
O_CLOEXEC
);
restore_magiskcon
(
fd
);
close
(
fd
);
}
void
restore_rootcon
()
{
setfilecon
(
"/sbin"
,
ROOT_CON
);
setfilecon
(
MAGISKTMP
,
ROOT_CON
);
setfilecon
(
MIRRDIR
,
ROOT_CON
);
setfilecon
(
BLOCKDIR
,
ROOT_CON
);
auto
dir
=
xopen_dir
(
"/sbin"
);
int
dfd
=
dirfd
(
dir
.
get
());
for
(
dirent
*
entry
;
(
entry
=
xreaddir
(
dir
.
get
()));)
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
setfilecon_at
(
dfd
,
entry
->
d_name
,
ROOT_CON
);
}
setfilecon
(
"/sbin/magisk"
,
MAGISK_CON
);
setfilecon
(
"/sbin/magiskinit"
,
MAGISK_CON
);
}
native/jni/utils/selinux.cpp
View file @
d739dcac
#include <sys/xattr.h>
#include <dlfcn.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <syscall.h>
#include <string_view>
#include <magisk.hpp>
#include <utils.hpp>
#include <selinux.hpp>
using
namespace
std
::
literals
;
#define UNLABEL_CON "u:object_r:unlabeled:s0"
#define SYSTEM_CON "u:object_r:system_file:s0"
#define ADB_CON "u:object_r:adb_data_file:s0"
#define ROOT_CON "u:object_r:rootfs:s0"
#define MAGISK_CON "u:object_r:" SEPOL_FILE_DOMAIN ":s0"
using
namespace
std
;
// Stub implementation
...
...
@@ -131,92 +118,3 @@ void dload_selinux() {
* Always use builtin implementations for SELinux stuffs. */
selinux_builtin_impl
();
}
static
void
restore_syscon
(
int
dirfd
)
{
struct
dirent
*
entry
;
DIR
*
dir
;
char
*
con
;
fgetfilecon
(
dirfd
,
&
con
);
if
(
strlen
(
con
)
==
0
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
fsetfilecon
(
dirfd
,
SYSTEM_CON
);
freecon
(
con
);
dir
=
xfdopendir
(
dirfd
);
while
((
entry
=
xreaddir
(
dir
)))
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
int
fd
=
openat
(
dirfd
,
entry
->
d_name
,
O_RDONLY
|
O_CLOEXEC
);
if
(
entry
->
d_type
==
DT_DIR
)
{
restore_syscon
(
fd
);
}
else
if
(
entry
->
d_type
==
DT_REG
)
{
fgetfilecon
(
fd
,
&
con
);
if
(
con
[
0
]
==
'\0'
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
fsetfilecon
(
fd
,
SYSTEM_CON
);
freecon
(
con
);
}
else
if
(
entry
->
d_type
==
DT_LNK
)
{
getfilecon_at
(
dirfd
,
entry
->
d_name
,
&
con
);
if
(
con
[
0
]
==
'\0'
||
strcmp
(
con
,
UNLABEL_CON
)
==
0
)
setfilecon_at
(
dirfd
,
entry
->
d_name
,
con
);
freecon
(
con
);
}
close
(
fd
);
}
}
static
void
restore_magiskcon
(
int
dirfd
)
{
struct
dirent
*
entry
;
DIR
*
dir
;
fsetfilecon
(
dirfd
,
MAGISK_CON
);
fchown
(
dirfd
,
0
,
0
);
dir
=
xfdopendir
(
dirfd
);
while
((
entry
=
xreaddir
(
dir
)))
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
int
fd
=
xopenat
(
dirfd
,
entry
->
d_name
,
O_RDONLY
|
O_CLOEXEC
);
if
(
entry
->
d_type
==
DT_DIR
)
{
restore_magiskcon
(
fd
);
}
else
if
(
entry
->
d_type
)
{
fsetfilecon
(
fd
,
MAGISK_CON
);
fchown
(
fd
,
0
,
0
);
}
close
(
fd
);
}
}
void
restorecon
()
{
int
fd
;
fd
=
xopen
(
SELINUX_CONTEXT
,
O_WRONLY
|
O_CLOEXEC
);
if
(
write
(
fd
,
ADB_CON
,
sizeof
(
ADB_CON
))
>=
0
)
lsetfilecon
(
SECURE_DIR
,
ADB_CON
);
close
(
fd
);
lsetfilecon
(
MODULEROOT
,
SYSTEM_CON
);
fd
=
xopen
(
MODULEROOT
,
O_RDONLY
|
O_CLOEXEC
);
restore_syscon
(
fd
);
close
(
fd
);
fd
=
xopen
(
DATABIN
,
O_RDONLY
|
O_CLOEXEC
);
restore_magiskcon
(
fd
);
close
(
fd
);
}
void
restore_rootcon
()
{
setfilecon
(
"/sbin"
,
ROOT_CON
);
setfilecon
(
MAGISKTMP
,
ROOT_CON
);
setfilecon
(
MIRRDIR
,
ROOT_CON
);
setfilecon
(
BLOCKDIR
,
ROOT_CON
);
auto
dir
=
xopen_dir
(
"/sbin"
);
int
dfd
=
dirfd
(
dir
.
get
());
for
(
dirent
*
entry
;
(
entry
=
xreaddir
(
dir
.
get
()));)
{
if
(
entry
->
d_name
==
"."
sv
||
entry
->
d_name
==
".."
sv
)
continue
;
setfilecon_at
(
dfd
,
entry
->
d_name
,
ROOT_CON
);
}
setfilecon
(
"/sbin/magisk.bin"
,
MAGISK_CON
);
setfilecon
(
"/sbin/magisk"
,
MAGISK_CON
);
setfilecon
(
"/sbin/magiskinit"
,
MAGISK_CON
);
}
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