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Do not use psuedo permissive, hide instead

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topjohnwu 2017-04-03 23:28:18 +08:00
parent d274e45587
commit 40766b3375
1 changed files with 9 additions and 32 deletions
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41
jni/magiskhide/util.c
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@ -1,5 +1,7 @@
#include "magiskhide.h"
static int isMocked = 0;
char **file_to_str_arr(FILE *fp, int *size) {
int allocated = 16;
char *line = NULL, **array;
@ -59,45 +61,20 @@ void run_as_daemon() {
}
void manage_selinux() {
char *argv[] = { SEPOLICY_INJECT, "--live", "permissive *", NULL };
if (isMocked) return;
char val[1];
int fd, ret;
fd = open(ENFORCE_FILE, O_RDWR);
int fd = open(ENFORCE_FILE, O_RDONLY);
if (fd < 0)
return;
if (read(fd, val, 1) < 1)
return;
lseek(fd, 0, SEEK_SET);
close(fd);
// Permissive
if (val[0] == '0') {
fprintf(logfile, "MagiskHide: Permissive detected, hide the state\n");
fprintf(logfile, "MagiskHide: Permissive detected\n");
if (write(fd, "1", 1) < 1)
return;
lseek(fd, 0, SEEK_SET);
if (read(fd, val, 1) < 1)
return;
lseek(fd, 0, SEEK_SET);
close(fd);
if (val[0] == '0') {
fprintf(logfile, "MagiskHide: Unable to set to enforce, hide the state\n");
chmod(ENFORCE_FILE, 0640);
chmod(POLICY_FILE, 0440);
return;
}
fprintf(logfile, "MagiskHide: Calling magiskpolicy for pseudo enforce mode\n");
switch(fork()) {
case -1:
return;
case 0:
execvp(argv[0], argv);
default:
return;
}
chmod(ENFORCE_FILE, 0640);
chmod(POLICY_FILE, 0440);
isMocked = 1;
}
}