fefe5915b0
Includes various minor fixes for building in Android 8 trees with r23+ tag Update FBE extended header in libtar to version 2 and include the entire ext4_encryption_policy structure now after translating the policy. See this post for more details: https://plus.google.com/u/1/+DeesTroy/posts/i33ygUi7tiu Change-Id: I2af981e51f459b17fcd895fb8c2d3f6c8200e24b
129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2017 Team Win Recovery 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.
|
|
*/
|
|
|
|
/* To the best of my knowledge there is no native implementation for
|
|
* Weaver so I made this by looking at the IWeaver.h file that gets
|
|
* compiled by the build system. I took the information from this header
|
|
* file and looked at keymaster source to get an idea of the proper way
|
|
* to write the functions.
|
|
*/
|
|
|
|
#include "Weaver1.h"
|
|
|
|
//#include <android-base/logging.h>
|
|
#include <keystore/keymaster_tags.h>
|
|
#include <keystore/authorization_set.h>
|
|
#include <keystore/keystore_hidl_support.h>
|
|
|
|
#include <android/hardware/weaver/1.0/IWeaver.h>
|
|
|
|
#include <iostream>
|
|
#define ERROR 1
|
|
#define LOG(x) std::cout
|
|
|
|
using namespace android::hardware::weaver;
|
|
using android::hardware::hidl_string;
|
|
using ::android::hardware::weaver::V1_0::IWeaver;
|
|
using ::android::hardware::weaver::V1_0::WeaverConfig;
|
|
using ::android::hardware::weaver::V1_0::WeaverReadStatus;
|
|
using ::android::hardware::weaver::V1_0::WeaverReadResponse;
|
|
using ::android::hardware::weaver::V1_0::WeaverStatus;
|
|
using ::android::hardware::Return;
|
|
using ::android::sp;
|
|
|
|
namespace android {
|
|
namespace vold {
|
|
|
|
Weaver::Weaver() {
|
|
mDevice = ::android::hardware::weaver::V1_0::IWeaver::getService();
|
|
GottenConfig = false;
|
|
}
|
|
|
|
bool Weaver::GetConfig() {
|
|
if (GottenConfig)
|
|
return true;
|
|
|
|
WeaverStatus status;
|
|
WeaverConfig cfg;
|
|
|
|
bool callbackCalled = false;
|
|
auto ret = mDevice->getConfig([&](WeaverStatus s, WeaverConfig c) {
|
|
callbackCalled = true;
|
|
status = s;
|
|
cfg = c;
|
|
});
|
|
if (ret.isOk() && callbackCalled && status == WeaverStatus::OK) {
|
|
config = cfg;
|
|
GottenConfig = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Weaver::GetSlots(uint32_t* slots) {
|
|
if (!GetConfig())
|
|
return false;
|
|
*slots = config.slots;
|
|
return true;
|
|
}
|
|
|
|
bool Weaver::GetKeySize(uint32_t* keySize) {
|
|
if (!GetConfig())
|
|
return false;
|
|
*keySize = config.keySize;
|
|
return true;
|
|
}
|
|
|
|
bool Weaver::GetValueSize(uint32_t* valueSize) {
|
|
if (!GetConfig())
|
|
return false;
|
|
*valueSize = config.valueSize;
|
|
return true;
|
|
}
|
|
|
|
// TODO: we should return more information about the status including time delays before the next retry
|
|
bool Weaver::WeaverVerify(const uint32_t slot, const void* weaver_key, std::vector<uint8_t>* payload) {
|
|
bool callbackCalled = false;
|
|
WeaverReadStatus status;
|
|
std::vector<uint8_t> readValue;
|
|
uint32_t timeout;
|
|
uint32_t keySize;
|
|
if (!GetKeySize(&keySize))
|
|
return false;
|
|
std::vector<uint8_t> key;
|
|
key.resize(keySize);
|
|
uint32_t index = 0;
|
|
unsigned char* ptr = (unsigned char*)weaver_key;
|
|
for (index = 0; index < keySize; index++) {
|
|
key[index] = *ptr;
|
|
ptr++;
|
|
}
|
|
const auto readRet = mDevice->read(slot, key, [&](WeaverReadStatus s, WeaverReadResponse r) {
|
|
callbackCalled = true;
|
|
status = s;
|
|
readValue = r.value;
|
|
timeout = r.timeout;
|
|
});
|
|
if (readRet.isOk() && callbackCalled && status == WeaverReadStatus::OK && timeout == 0) {
|
|
*payload = readValue;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
} // namespace vold
|
|
} // namespace android
|