Magisk/jni/magiskhide/magiskhide.c
2017-04-22 17:12:54 +08:00

148 lines
3.1 KiB
C

/* magiskhide.c - initialize the environment for Magiskhide
*/
// TODO: Functions to modify hiding list
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
#include <sys/types.h>
#include "magisk.h"
#include "utils.h"
#include "magiskhide.h"
#include "daemon.h"
int sv[2], hide_pid;
struct vector *hide_list, *new_list;
int isEnabled = 0;
static pthread_t proc_monitor_thread;
void kill_proc(int pid) {
kill(pid, SIGTERM);
}
static void usage(char *arg0) {
fprintf(stderr,
"%s [--options [arguments...] ]\n\n"
"Options:\n"
" --enable: Start the magiskhide daemon\n"
" --disable: Stop the magiskhide daemon\n"
" --add <process name>: Add <process name> to the list\n"
" --rm <process name>: Remove <process name> from the list\n"
" --ls: Print out the current hide list\n"
, arg0);
exit(1);
}
void launch_magiskhide(int client) {
if (isEnabled) {
write_int(client, 0);
return;
}
/*
* The setns system call do not support multithread processes
* We have to fork a new process, and communicate with pipe
*/
LOGI("* Starting MagiskHide\n");
if (socketpair(AF_LOCAL, SOCK_STREAM, 0, sv) == -1)
goto error;
// Launch the hide daemon
if (hide_daemon())
goto error;
close(sv[1]);
// Initialize the hide list
hide_list = new_list = xmalloc(sizeof(*hide_list));
if (hide_list == NULL)
goto error;
vec_init(hide_list);
FILE *fp = xfopen(HIDELIST, "r");
if (fp == NULL)
goto error;
file_to_vector(hide_list, fp);
fclose(fp);
char *line;
vec_for_each(hide_list, line) {
LOGI("hide_list: [%s]\n", line);
ps_filter_proc_name(line, kill_proc);
}
// Start a new thread to monitor processes
if (xpthread_create(&proc_monitor_thread, NULL, proc_monitor, NULL))
goto error;
isEnabled = 1;
write_int(client, 0);
close(client);
return;
error:
write_int(client, 1);
close(client);
return;
}
void stop_magiskhide(int client) {
if (!isEnabled)
return;
LOGI("* Stopping MagiskHide\n");
int kill = -1;
// Terminate hide daemon
write(sv[0], &kill, sizeof(kill));
close(sv[0]);
waitpid(hide_pid, NULL, 0);
// Stop process monitor
pthread_kill(proc_monitor_thread, SIGUSR1);
pthread_join(proc_monitor_thread, NULL);
isEnabled = 0;
write_int(client, 0);
close(client);
}
int magiskhide_main(int argc, char *argv[]) {
if (argc < 2) {
usage(argv[0]);
}
client_request req;
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) {
FILE *fp = xfopen(HIDELIST, "r");
char buffer[512];
while (fgets(buffer, sizeof(buffer), fp)) {
printf("%s", buffer);
}
fclose(fp);
return 0;
}
int fd = connect_daemon();
write_int(fd, req);
if (req == ADD_HIDELIST || req == RM_HIDELIST) {
write_string(fd, argv[2]);
}
int code = read_int(fd);
close(fd);
if (code) {
fprintf(stderr, "Error occured in MagiskHide daemon\n");
}
return code;
}