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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <poll.h>
#include <cutils/properties.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/un.h>
#include "android/os/IVold.h"
#include <binder/IServiceManager.h>
#include <binder/Status.h>
#include <private/android_filesystem_config.h>
static void usage();
static android::sp<android::IBinder> getServiceAggressive() {
static char prop_value[PROPERTY_VALUE_MAX];
property_get("init.svc.sys_vold", prop_value, "error");
if (strncmp(prop_value, "running", strlen("running")) != 0) {
printf("vdc_pie: vold is not running, init.svc.sys_vold=%s\n", prop_value);
exit(EINVAL);
}
android::sp<android::IBinder> res;
auto sm = android::defaultServiceManager();
auto name = android::String16("vold");
for (int i = 0; i < 5000; i++) {
res = sm->checkService(name);
if (res) {
printf("vdc_pie: Got vold, waited %d ms\n", (i * 10));
break;
}
usleep(10000); // 10ms
}
return res;
}
static int checkStatus(android::binder::Status status) {
if (status.isOk()) return 0;
std::string ret = status.toString8().string();
#ifdef TWRP_INCLUDE_LOGCAT
printf("vdc_pie: Decryption failed, vold service returned: %s,"
" see logcat for details\n", ret.c_str());
#else
printf("vdc_pie: Decryption failed, vold service returned: %s\n", ret.c_str());
#endif
return -1;
}
int main(int argc, char** argv) {
std::vector<std::string> args(argv + 1, argv + argc);
if (args.size() > 0 && args[0] == "--wait") {
// Just ignore the --wait flag
args.erase(args.begin());
}
if (args.size() < 2) {
usage();
exit(5);
}
android::sp<android::IBinder> binder = getServiceAggressive();
if (!binder) {
printf("vdc_pie: Failed to obtain vold Binder\n");
exit(EINVAL);
}
auto vold = android::interface_cast<android::os::IVold>(binder);
if (args[0] == "cryptfs" && args[1] == "checkpw" && args.size() == 3) {
return checkStatus(vold->fdeCheckPassword(args[2]));
} else {
usage();
exit(EINVAL);
}
return 0;
}
static void usage() {
printf("vdc_pie: Usage: vold_pie cryptfs checkpw <password>\n");
}
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