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Add more props for hiding

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This commit is contained in:
topjohnwu 2017-07-03 00:57:20 +08:00
parent 9e22b80714
commit 52a23e7904
3 changed files with 85 additions and 96 deletions
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3
jni/Android.mk
View File

@ -28,8 +28,7 @@ LOCAL_SRC_FILES := \
magiskhide/magiskhide.c \
magiskhide/hide_daemon.c \
magiskhide/proc_monitor.c \
magiskhide/pre_process.c \
magiskhide/list_manager.c \
magiskhide/hide_utils.c \
magiskpolicy/magiskpolicy.c \
magiskpolicy/rules.c \
magiskpolicy/sepolicy.c \

88
jni/magiskhide/list_manager.c → jni/magiskhide/hide_utils.c
View File

@ -1,14 +1,94 @@
/* list_manager.c - Hide list management
/* hide_utils.c - Some utility functions for MagiskHide
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include <errno.h>
#include <dirent.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <selinux/selinux.h>
#include "magisk.h"
#include "utils.h"
#include "daemon.h"
#include "resetprop.h"
#include "magiskhide.h"
#include "daemon.h"
static char *prop_key[] =
{ "ro.boot.verifiedbootstate", "ro.boot.flash.locked", "ro.boot.veritymode", "ro.boot.warranty_bit", "ro.warranty_bit",
"ro.debuggable", "ro.secure", "ro.build.type", "ro.build.tags", "ro.build.selinux", NULL };
static char *prop_value[] =
{ "green", "1", "enforcing", "0", "0", "0", "1", "user", "release-keys", "0", NULL };
static int mocked = 0;
void manage_selinux() {
if (mocked) return;
char val[1];
int fd = xopen(SELINUX_ENFORCE, O_RDONLY);
xxread(fd, val, 1);
close(fd);
// Permissive
if (val[0] == '0') {
LOGI("hide_daemon: Permissive detected, hide the state\n");
chmod(SELINUX_ENFORCE, 0640);
chmod(SELINUX_POLICY, 0440);
mocked = 1;
}
}
void hide_sensitive_props() {
LOGI("hide_pre_proc: Hiding sensitive props\n");
// Hide all sensitive props
char *value;
for (int i = 0; prop_key[i]; ++i) {
value = getprop(prop_key[i]);
if (value) {
if (strcmp(value, prop_value[i]) != 0)
setprop2(prop_key[i], prop_value[i], 0);
free(value);
}
}
}
void relink_sbin() {
struct stat st;
if (stat("/sbin_orig", &st) == -1 && errno == ENOENT) {
// Re-link all binaries and bind mount
DIR *dir;
struct dirent *entry;
char from[PATH_MAX], to[PATH_MAX];
LOGI("hide_pre_proc: Re-linking /sbin\n");
xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
xrename("/sbin", "/sbin_orig");
xmkdir("/sbin", 0755);
xchmod("/sbin", 0755);
xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
xmkdir("/dev/sbin_bind", 0755);
xchmod("/dev/sbin_bind", 0755);
dir = xopendir("/sbin_orig");
while ((entry = xreaddir(dir))) {
snprintf(from, sizeof(from), "%s/%s", "/sbin_orig", entry->d_name);
snprintf(to, sizeof(to), "%s/%s", "/dev/sbin_bind", entry->d_name);
symlink(from, to);
lsetfilecon(to, "u:object_r:system_file:s0");
}
closedir(dir);
xmount("/dev/sbin_bind", "/sbin", NULL, MS_BIND, NULL);
}
}
int add_list(char *proc) {
if (!hideEnabled) {

90
jni/magiskhide/pre_process.c
View File

@ -1,90 +0,0 @@
/* pre_process.c - Some pre-processes for MagiskHide to hide properly
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <dirent.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <selinux/selinux.h>
#include "magisk.h"
#include "utils.h"
#include "resetprop.h"
#include "magiskhide.h"
static char *prop_key[] =
{ "ro.boot.verifiedbootstate", "ro.boot.flash.locked", "ro.boot.veritymode", "ro.boot.warranty_bit", "ro.warranty_bit",
"ro.debuggable", "ro.secure", NULL };
static char *prop_value[] =
{ "green", "1", "enforcing", "0", "0", "0", "1", NULL };
static int isMocked = 0;
void manage_selinux() {
if (isMocked) return;
char val[1];
int fd = xopen(SELINUX_ENFORCE, O_RDONLY);
xxread(fd, val, 1);
close(fd);
// Permissive
if (val[0] == '0') {
LOGI("hide_daemon: Permissive detected, hide the state\n");
chmod(SELINUX_ENFORCE, 0640);
chmod(SELINUX_POLICY, 0440);
isMocked = 1;
}
}
void hide_sensitive_props() {
LOGI("hide_pre_proc: Hiding sensitive props\n");
// Hide all sensitive props
char *value;
for (int i = 0; prop_key[i]; ++i) {
value = getprop(prop_key[i]);
if (value) {
if (strcmp(value, prop_value[i]) != 0)
setprop2(prop_key[i], prop_value[i], 0);
free(value);
}
}
}
void relink_sbin() {
struct stat st;
if (stat("/sbin_orig", &st) == -1 && errno == ENOENT) {
// Re-link all binaries and bind mount
DIR *dir;
struct dirent *entry;
char from[PATH_MAX], to[PATH_MAX];
LOGI("hide_pre_proc: Re-linking /sbin\n");
xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
xrename("/sbin", "/sbin_orig");
xmkdir("/sbin", 0755);
xchmod("/sbin", 0755);
xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
xmkdir("/dev/sbin_bind", 0755);
xchmod("/dev/sbin_bind", 0755);
dir = xopendir("/sbin_orig");
while ((entry = xreaddir(dir))) {
snprintf(from, sizeof(from), "%s/%s", "/sbin_orig", entry->d_name);
snprintf(to, sizeof(to), "%s/%s", "/dev/sbin_bind", entry->d_name);
symlink(from, to);
lsetfilecon(to, "u:object_r:system_file:s0");
}
closedir(dir);
xmount("/dev/sbin_bind", "/sbin", NULL, MS_BIND, NULL);
}
}