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/*
* Copyright 2015, Mozilla Foundation and contributors
*
* 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 "ClearKeyStorage.h"
#include "ClearKeyUtils.h"
#include "gmp-task-utils.h"
#include <assert.h>
#include "ArrayUtils.h"
#include <vector>
static GMPErr
RunOnMainThread(GMPTask* aTask)
{
return GetPlatform()->runonmainthread(aTask);
}
GMPErr
OpenRecord(const char* aName,
uint32_t aNameLength,
GMPRecord** aOutRecord,
GMPRecordClient* aClient)
{
return GetPlatform()->createrecord(aName, aNameLength, aOutRecord, aClient);
}
class WriteRecordClient : public GMPRecordClient {
public:
/*
* This function will take the memory ownership of the parameters and
* delete them when done.
*/
static void Write(const std::string& aRecordName,
const std::vector<uint8_t>& aData,
GMPTask* aOnSuccess,
GMPTask* aOnFailure) {
(new WriteRecordClient(aData, aOnSuccess, aOnFailure))->Do(aRecordName);
}
virtual void OpenComplete(GMPErr aStatus) override {
if (GMP_FAILED(aStatus) ||
GMP_FAILED(mRecord->Write(&mData.front(), mData.size()))) {
Done(mOnFailure, mOnSuccess);
}
}
virtual void ReadComplete(GMPErr aStatus,
const uint8_t* aData,
uint32_t aDataSize) override {
assert(false); // Should not reach here.
}
virtual void WriteComplete(GMPErr aStatus) override {
if (GMP_FAILED(aStatus)) {
Done(mOnFailure, mOnSuccess);
} else {
Done(mOnSuccess, mOnFailure);
}
}
private:
WriteRecordClient(const std::vector<uint8_t>& aData,
GMPTask* aOnSuccess,
GMPTask* aOnFailure)
: mRecord(nullptr)
, mOnSuccess(aOnSuccess)
, mOnFailure(aOnFailure)
, mData(aData) {}
void Do(const std::string& aName) {
auto err = OpenRecord(aName.c_str(), aName.size(), &mRecord, this);
if (GMP_FAILED(err) ||
GMP_FAILED(mRecord->Open())) {
Done(mOnFailure, mOnSuccess);
}
}
void Done(GMPTask* aToRun, GMPTask* aToDestroy) {
// Note: Call Close() before running continuation, in case the
// continuation tries to open the same record; if we call Close()
// after running the continuation, the Close() call will arrive
// just after the Open() call succeeds, immediately closing the
// record we just opened.
if (mRecord) {
mRecord->Close();
}
aToDestroy->Destroy();
RunOnMainThread(aToRun);
delete this;
}
GMPRecord* mRecord;
GMPTask* mOnSuccess;
GMPTask* mOnFailure;
const std::vector<uint8_t> mData;
};
void
StoreData(const std::string& aRecordName,
const std::vector<uint8_t>& aData,
GMPTask* aOnSuccess,
GMPTask* aOnFailure)
{
WriteRecordClient::Write(aRecordName, aData, aOnSuccess, aOnFailure);
}
class ReadRecordClient : public GMPRecordClient {
public:
/*
* This function will take the memory ownership of the parameters and
* delete them when done.
*/
static void Read(const std::string& aRecordName,
ReadContinuation* aContinuation) {
assert(aContinuation);
(new ReadRecordClient(aContinuation))->Do(aRecordName);
}
virtual void OpenComplete(GMPErr aStatus) override {
auto err = aStatus;
if (GMP_FAILED(err) ||
GMP_FAILED(err = mRecord->Read())) {
Done(err, nullptr, 0);
}
}
virtual void ReadComplete(GMPErr aStatus,
const uint8_t* aData,
uint32_t aDataSize) override {
Done(aStatus, aData, aDataSize);
}
virtual void WriteComplete(GMPErr aStatus) override {
assert(false); // Should not reach here.
}
private:
explicit ReadRecordClient(ReadContinuation* aContinuation)
: mRecord(nullptr)
, mContinuation(aContinuation) {}
void Do(const std::string& aName) {
auto err = OpenRecord(aName.c_str(), aName.size(), &mRecord, this);
if (GMP_FAILED(err) ||
GMP_FAILED(err = mRecord->Open())) {
Done(err, nullptr, 0);
}
}
void Done(GMPErr err, const uint8_t* aData, uint32_t aDataSize) {
// Note: Call Close() before running continuation, in case the
// continuation tries to open the same record; if we call Close()
// after running the continuation, the Close() call will arrive
// just after the Open() call succeeds, immediately closing the
// record we just opened.
if (mRecord) {
mRecord->Close();
}
mContinuation->ReadComplete(err, aData, aDataSize);
delete mContinuation;
delete this;
}
GMPRecord* mRecord;
ReadContinuation* mContinuation;
};
void
ReadData(const std::string& aRecordName,
ReadContinuation* aContinuation)
{
ReadRecordClient::Read(aRecordName, aContinuation);
}
GMPErr
EnumRecordNames(RecvGMPRecordIteratorPtr aRecvIteratorFunc)
{
return GetPlatform()->getrecordenumerator(aRecvIteratorFunc, nullptr);
}
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