mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-25 20:37:48 +00:00
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/* 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);
|
|
}
|
|
}
|