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Propagate Zygisk state to Magisk app

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This commit is contained in:
topjohnwu
2021-09-18 02:38:53 -07:00
parent 7b25e74418
commit db590091b3
11 changed files with 99 additions and 85 deletions
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36
native/jni/zygisk/entry.cpp
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@@ -8,6 +8,7 @@
#include <utils.hpp>
#include <daemon.hpp>
#include <magisk.hpp>
#include <db.hpp>
#include "inject.hpp"
#include "../deny/deny.hpp"
@@ -205,21 +206,17 @@ static int zygisk_log(int prio, const char *fmt, va_list ap) {
return ret;
}
bool remote_check_denylist(int uid, const char *process) {
void remote_get_app_info(int uid, const char *process, AppInfo *info) {
if (int fd = connect_daemon(); fd >= 0) {
write_int(fd, ZYGISK_REQUEST);
write_int(fd, ZYGISK_CHECK_DENYLIST);
write_int(fd, ZYGISK_GET_APPINFO);
write_int(fd, uid);
write_string(fd, process);
xxread(fd, info, sizeof(*info));
int ret = -1;
if (read_int(fd) == 0) {
write_int(fd, uid);
write_string(fd, process);
ret = read_int(fd);
}
close(fd);
return ret >= 0 && ret;
}
return false;
}
int remote_request_unmount() {
@@ -254,15 +251,16 @@ static void setup_files(int client, ucred *cred) {
write_string(client, path);
}
static void check_denylist(int client) {
if (!denylist_enabled) {
write_int(client, DENY_NOT_ENFORCED);
return;
}
write_int(client, 0);
static void get_app_info(int client) {
AppInfo info{};
int uid = read_int(client);
string process = read_string(client);
write_int(client, is_deny_target(uid, process));
if (to_app_id(uid) == get_manager_app_id()) {
info.is_magisk_app = true;
} else if (denylist_enabled) {
info.on_denylist = is_deny_target(uid, process);
}
xwrite(client, &info, sizeof(info));
}
static void do_unmount(int client, ucred *cred) {
@@ -290,8 +288,8 @@ void zygisk_handler(int client, ucred *cred) {
case ZYGISK_SETUP:
setup_files(client, cred);
break;
case ZYGISK_CHECK_DENYLIST:
check_denylist(client);
case ZYGISK_GET_APPINFO:
get_app_info(client);
break;
case ZYGISK_UNMOUNT:
do_unmount(client, cred);