Magisk/native/jni/magiskhide/magiskhide.c

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/* magiskhide.c - initialize the environment for Magiskhide
*/
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
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#include <signal.h>
#include <string.h>
#include <sys/wait.h>
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#include <sys/types.h>
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#include "magisk.h"
#include "utils.h"
#include "magiskhide.h"
#include "daemon.h"
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#include "resetprop.h"
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struct vector *hide_list = NULL;
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int hideEnabled = 0;
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static pthread_t proc_monitor_thread;
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pthread_mutex_t hide_lock, file_lock;
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void kill_proc(int pid) {
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kill(pid, SIGTERM);
}
static void usage(char *arg0) {
fprintf(stderr,
"MagiskHide v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu) - Hide Magisk!\n\n"
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"Usage: %s [--options [arguments...] ]\n\n"
"Options:\n"
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" --enable Start magiskhide\n"
" --disable Stop magiskhide\n"
" --add PROCESS Add PROCESS to the hide list\n"
" --rm PROCESS Remove PROCESS from the hide list\n"
" --ls Print out the current hide list\n"
, arg0);
exit(1);
}
void launch_magiskhide(int client) {
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if (hideEnabled) {
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if (client > 0) {
write_int(client, HIDE_IS_ENABLED);
close(client);
}
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return;
}
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if (!logd) {
if (client > 0) {
write_int(client, LOGD_DISABLED);
close(client);
}
setprop(MAGISKHIDE_PROP, "0");
// Remove without actually removing persist props
deleteprop2(MAGISKHIDE_PROP, 0);
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return;
}
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hideEnabled = 1;
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LOGI("* Starting MagiskHide\n");
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deleteprop2(MAGISKHIDE_PROP, 1);
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hide_sensitive_props();
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// Initialize the mutex lock
pthread_mutex_init(&hide_lock, NULL);
pthread_mutex_init(&file_lock, NULL);
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// Initialize the hide list
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if (init_list())
goto error;
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// Add SafetyNet by default
add_list(strdup("com.google.android.gms.unstable"));
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if (client > 0) {
write_int(client, DAEMON_SUCCESS);
close(client);
}
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// Get thread reference
proc_monitor_thread = pthread_self();
// Start monitoring
proc_monitor();
return;
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error:
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hideEnabled = 0;
if (client > 0) {
write_int(client, DAEMON_ERROR);
close(client);
}
return;
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}
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void stop_magiskhide(int client) {
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if (!hideEnabled) {
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write_int(client, HIDE_NOT_ENABLED);
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close(client);
return;
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}
LOGI("* Stopping MagiskHide\n");
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hideEnabled = 0;
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setprop(MAGISKHIDE_PROP, "0");
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// Remove without actually removing persist props
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deleteprop2(MAGISKHIDE_PROP, 0);
pthread_kill(proc_monitor_thread, TERM_THREAD);
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write_int(client, DAEMON_SUCCESS);
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close(client);
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}
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int magiskhide_main(int argc, char *argv[]) {
if (argc < 2) {
usage(argv[0]);
}
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int req = DO_NOTHING;
if (strcmp(argv[1], "--enable") == 0) {
req = LAUNCH_MAGISKHIDE;
} else if (strcmp(argv[1], "--disable") == 0) {
req = STOP_MAGISKHIDE;
} else if (strcmp(argv[1], "--add") == 0 && argc > 2) {
req = ADD_HIDELIST;
} else if (strcmp(argv[1], "--rm") == 0 && argc > 2) {
req = RM_HIDELIST;
} else if (strcmp(argv[1], "--ls") == 0) {
req = LS_HIDELIST;
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} else {
usage(argv[0]);
}
int fd = connect_daemon();
write_int(fd, req);
if (req == ADD_HIDELIST || req == RM_HIDELIST) {
write_string(fd, argv[2]);
}
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int code = read_int(fd);
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switch (code) {
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case DAEMON_SUCCESS:
break;
case ROOT_REQUIRED:
fprintf(stderr, "Root is required for this operation\n");
return code;
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case LOGD_DISABLED:
fprintf(stderr, "Logd is not running, cannot run logcat\n");
return (code);
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case HIDE_NOT_ENABLED:
fprintf(stderr, "Magisk hide is not enabled yet\n");
return code;
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case HIDE_IS_ENABLED:
fprintf(stderr, "Magisk hide is already enabled\n");
return code;
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case HIDE_ITEM_EXIST:
fprintf(stderr, "Process [%s] already exists in hide list\n", argv[2]);
return code;
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case HIDE_ITEM_NOT_EXIST:
fprintf(stderr, "Process [%s] does not exist in hide list\n", argv[2]);
return code;
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case DAEMON_ERROR:
default:
fprintf(stderr, "Error occured in daemon...\n");
return code;
}
if (req == LS_HIDELIST) {
int argc = read_int(fd);
for (int i = 0; i < argc; ++i) {
char *s = read_string(fd);
printf("%s\n", s);
free(s);
}
}
close(fd);
return 0;
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}