Add m-esr52 at 52.6.0

1 files changed, 418 insertions, 0 deletions

diff --git a/media/gmp-clearkey/0.1/ClearKeySessionManager.cpp b/media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
new file mode 100644
index 000000000..4dbb06299
--- /dev/null
+++ b/media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
@@ -0,0 +1,418 @@
+/*
+ * 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 <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "ClearKeyDecryptionManager.h"
+#include "ClearKeySessionManager.h"
+#include "ClearKeyUtils.h"
+#include "ClearKeyStorage.h"
+#include "ClearKeyPersistence.h"
+#include "gmp-task-utils.h"
+#include <assert.h>
+
+using namespace std;
+
+ClearKeySessionManager::ClearKeySessionManager()
+  : mDecryptionManager(ClearKeyDecryptionManager::Get())
+{
+  CK_LOGD("ClearKeySessionManager ctor %p", this);
+  AddRef();
+
+  if (GetPlatform()->createthread(&mThread) != GMPNoErr) {
+    CK_LOGD("failed to create thread in clearkey cdm");
+    mThread = nullptr;
+  }
+}
+
+ClearKeySessionManager::~ClearKeySessionManager()
+{
+  CK_LOGD("ClearKeySessionManager dtor %p", this);
+}
+
+void
+ClearKeySessionManager::Init(GMPDecryptorCallback* aCallback,
+                             bool aDistinctiveIdentifierAllowed,
+                             bool aPersistentStateAllowed)
+{
+  CK_LOGD("ClearKeySessionManager::Init");
+  mCallback = aCallback;
+  ClearKeyPersistence::EnsureInitialized();
+}
+
+void
+ClearKeySessionManager::CreateSession(uint32_t aCreateSessionToken,
+                                      uint32_t aPromiseId,
+                                      const char* aInitDataType,
+                                      uint32_t aInitDataTypeSize,
+                                      const uint8_t* aInitData,
+                                      uint32_t aInitDataSize,
+                                      GMPSessionType aSessionType)
+{
+  CK_LOGD("ClearKeySessionManager::CreateSession type:%s", aInitDataType);
+
+  string initDataType(aInitDataType, aInitDataType + aInitDataTypeSize);
+  // initDataType must be "cenc", "keyids", or "webm".
+  if (initDataType != "cenc" &&
+      initDataType != "keyids" &&
+      initDataType != "webm") {
+    string message = "'" + initDataType + "' is an initDataType unsupported by ClearKey";
+    mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
+                             message.c_str(), message.size());
+    return;
+  }
+
+  if (ClearKeyPersistence::DeferCreateSessionIfNotReady(this,
+                                                        aCreateSessionToken,
+                                                        aPromiseId,
+                                                        initDataType,
+                                                        aInitData,
+                                                        aInitDataSize,
+                                                        aSessionType)) {
+    return;
+  }
+
+  string sessionId = ClearKeyPersistence::GetNewSessionId(aSessionType);
+  assert(mSessions.find(sessionId) == mSessions.end());
+
+  ClearKeySession* session = new ClearKeySession(sessionId, mCallback, aSessionType);
+  session->Init(aCreateSessionToken, aPromiseId, initDataType, aInitData, aInitDataSize);
+  mSessions[sessionId] = session;
+
+  const vector<KeyId>& sessionKeys = session->GetKeyIds();
+  vector<KeyId> neededKeys;
+  for (auto it = sessionKeys.begin(); it != sessionKeys.end(); it++) {
+    // Need to request this key ID from the client. We always send a key
+    // request, whether or not another session has sent a request with the same
+    // key ID. Otherwise a script can end up waiting for another script to
+    // respond to the request (which may not necessarily happen).
+    neededKeys.push_back(*it);
+    mDecryptionManager->ExpectKeyId(*it);
+  }
+
+  if (neededKeys.empty()) {
+    CK_LOGD("No keys needed from client.");
+    return;
+  }
+
+  // Send a request for needed key data.
+  string request;
+  ClearKeyUtils::MakeKeyRequest(neededKeys, request, aSessionType);
+  mCallback->SessionMessage(&sessionId[0], sessionId.length(),
+                            kGMPLicenseRequest,
+                            (uint8_t*)&request[0], request.length());
+}
+
+void
+ClearKeySessionManager::LoadSession(uint32_t aPromiseId,
+                                    const char* aSessionId,
+                                    uint32_t aSessionIdLength)
+{
+  CK_LOGD("ClearKeySessionManager::LoadSession");
+
+  if (!ClearKeyUtils::IsValidSessionId(aSessionId, aSessionIdLength)) {
+    mCallback->ResolveLoadSessionPromise(aPromiseId, false);
+    return;
+  }
+
+  if (ClearKeyPersistence::DeferLoadSessionIfNotReady(this,
+                                                      aPromiseId,
+                                                      aSessionId,
+                                                      aSessionIdLength)) {
+    return;
+  }
+
+  string sid(aSessionId, aSessionId + aSessionIdLength);
+  if (!ClearKeyPersistence::IsPersistentSessionId(sid)) {
+    mCallback->ResolveLoadSessionPromise(aPromiseId, false);
+    return;
+  }
+
+  // Callsback PersistentSessionDataLoaded with results...
+  ClearKeyPersistence::LoadSessionData(this, sid, aPromiseId);
+}
+
+void
+ClearKeySessionManager::PersistentSessionDataLoaded(GMPErr aStatus,
+                                                    uint32_t aPromiseId,
+                                                    const string& aSessionId,
+                                                    const uint8_t* aKeyData,
+                                                    uint32_t aKeyDataSize)
+{
+  CK_LOGD("ClearKeySessionManager::PersistentSessionDataLoaded");
+  if (GMP_FAILED(aStatus) ||
+      Contains(mSessions, aSessionId) ||
+      (aKeyDataSize % (2 * CENC_KEY_LEN)) != 0) {
+    mCallback->ResolveLoadSessionPromise(aPromiseId, false);
+    return;
+  }
+
+  ClearKeySession* session = new ClearKeySession(aSessionId,
+                                                 mCallback,
+                                                 kGMPPersistentSession);
+  mSessions[aSessionId] = session;
+
+  uint32_t numKeys = aKeyDataSize / (2 * CENC_KEY_LEN);
+
+  vector<GMPMediaKeyInfo> key_infos;
+  vector<KeyIdPair> keyPairs;
+  for (uint32_t i = 0; i < numKeys; i ++) {
+    const uint8_t* base = aKeyData + 2 * CENC_KEY_LEN * i;
+
+    KeyIdPair keyPair;
+
+    keyPair.mKeyId = KeyId(base, base + CENC_KEY_LEN);
+    assert(keyPair.mKeyId.size() == CENC_KEY_LEN);
+
+    keyPair.mKey = Key(base + CENC_KEY_LEN, base + 2 * CENC_KEY_LEN);
+    assert(keyPair.mKey.size() == CENC_KEY_LEN);
+
+    session->AddKeyId(keyPair.mKeyId);
+
+    mDecryptionManager->ExpectKeyId(keyPair.mKeyId);
+    mDecryptionManager->InitKey(keyPair.mKeyId, keyPair.mKey);
+    mKeyIds.insert(keyPair.mKey);
+
+    keyPairs.push_back(keyPair);
+    key_infos.push_back(GMPMediaKeyInfo(&keyPairs[i].mKeyId[0],
+                                        keyPairs[i].mKeyId.size(),
+                                        kGMPUsable));
+  }
+  mCallback->BatchedKeyStatusChanged(&aSessionId[0], aSessionId.size(),
+                                     key_infos.data(), key_infos.size());
+
+  mCallback->ResolveLoadSessionPromise(aPromiseId, true);
+}
+
+void
+ClearKeySessionManager::UpdateSession(uint32_t aPromiseId,
+                                      const char* aSessionId,
+                                      uint32_t aSessionIdLength,
+                                      const uint8_t* aResponse,
+                                      uint32_t aResponseSize)
+{
+  CK_LOGD("ClearKeySessionManager::UpdateSession");
+  string sessionId(aSessionId, aSessionId + aSessionIdLength);
+
+  auto itr = mSessions.find(sessionId);
+  if (itr == mSessions.end() || !(itr->second)) {
+    CK_LOGW("ClearKey CDM couldn't resolve session ID in UpdateSession.");
+    mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
+    return;
+  }
+  ClearKeySession* session = itr->second;
+
+  // Verify the size of session response.
+  if (aResponseSize >= kMaxSessionResponseLength) {
+    CK_LOGW("Session response size is not within a reasonable size.");
+    mCallback->RejectPromise(aPromiseId, kGMPTypeError, nullptr, 0);
+    return;
+  }
+
+  // Parse the response for any (key ID, key) pairs.
+  vector<KeyIdPair> keyPairs;
+  if (!ClearKeyUtils::ParseJWK(aResponse, aResponseSize, keyPairs, session->Type())) {
+    CK_LOGW("ClearKey CDM failed to parse JSON Web Key.");
+    mCallback->RejectPromise(aPromiseId, kGMPTypeError, nullptr, 0);
+    return;
+  }
+
+  vector<GMPMediaKeyInfo> key_infos;
+  for (size_t i = 0; i < keyPairs.size(); i++) {
+    KeyIdPair& keyPair = keyPairs[i];
+    mDecryptionManager->InitKey(keyPair.mKeyId, keyPair.mKey);
+    mKeyIds.insert(keyPair.mKeyId);
+    key_infos.push_back(GMPMediaKeyInfo(&keyPair.mKeyId[0],
+                                        keyPair.mKeyId.size(),
+                                        kGMPUsable));
+  }
+  mCallback->BatchedKeyStatusChanged(aSessionId, aSessionIdLength,
+                                     key_infos.data(), key_infos.size());
+
+  if (session->Type() != kGMPPersistentSession) {
+    mCallback->ResolvePromise(aPromiseId);
+    return;
+  }
+
+  // Store the keys on disk. We store a record whose name is the sessionId,
+  // and simply append each keyId followed by its key.
+  vector<uint8_t> keydata;
+  Serialize(session, keydata);
+  GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
+  static const char* message = "Couldn't store cenc key init data";
+  GMPTask* reject = WrapTask(mCallback,
+                             &GMPDecryptorCallback::RejectPromise,
+                             aPromiseId,
+                             kGMPInvalidStateError,
+                             message,
+                             strlen(message));
+  StoreData(sessionId, keydata, resolve, reject);
+}
+
+void
+ClearKeySessionManager::Serialize(const ClearKeySession* aSession,
+                                  std::vector<uint8_t>& aOutKeyData)
+{
+  const std::vector<KeyId>& keyIds = aSession->GetKeyIds();
+  for (size_t i = 0; i < keyIds.size(); i++) {
+    const KeyId& keyId = keyIds[i];
+    if (!mDecryptionManager->HasKeyForKeyId(keyId)) {
+      continue;
+    }
+    assert(keyId.size() == CENC_KEY_LEN);
+    aOutKeyData.insert(aOutKeyData.end(), keyId.begin(), keyId.end());
+    const Key& key = mDecryptionManager->GetDecryptionKey(keyId);
+    assert(key.size() == CENC_KEY_LEN);
+    aOutKeyData.insert(aOutKeyData.end(), key.begin(), key.end());
+  }
+}
+
+void
+ClearKeySessionManager::CloseSession(uint32_t aPromiseId,
+                                     const char* aSessionId,
+                                     uint32_t aSessionIdLength)
+{
+  CK_LOGD("ClearKeySessionManager::CloseSession");
+
+  string sessionId(aSessionId, aSessionId + aSessionIdLength);
+  auto itr = mSessions.find(sessionId);
+  if (itr == mSessions.end()) {
+    CK_LOGW("ClearKey CDM couldn't close non-existent session.");
+    mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
+    return;
+  }
+
+  ClearKeySession* session = itr->second;
+  assert(session);
+
+  ClearInMemorySessionData(session);
+  mCallback->SessionClosed(aSessionId, aSessionIdLength);
+  mCallback->ResolvePromise(aPromiseId);
+}
+
+void
+ClearKeySessionManager::ClearInMemorySessionData(ClearKeySession* aSession)
+{
+  mSessions.erase(aSession->Id());
+  delete aSession;
+}
+
+void
+ClearKeySessionManager::RemoveSession(uint32_t aPromiseId,
+                                      const char* aSessionId,
+                                      uint32_t aSessionIdLength)
+{
+  CK_LOGD("ClearKeySessionManager::RemoveSession");
+  string sessionId(aSessionId, aSessionId + aSessionIdLength);
+  auto itr = mSessions.find(sessionId);
+  if (itr == mSessions.end()) {
+    CK_LOGW("ClearKey CDM couldn't remove non-existent session.");
+    mCallback->RejectPromise(aPromiseId, kGMPNotFoundError, nullptr, 0);
+    return;
+  }
+
+  ClearKeySession* session = itr->second;
+  assert(session);
+  string sid = session->Id();
+  bool isPersistent = session->Type() == kGMPPersistentSession;
+  ClearInMemorySessionData(session);
+
+  if (!isPersistent) {
+    mCallback->ResolvePromise(aPromiseId);
+    return;
+  }
+
+  ClearKeyPersistence::PersistentSessionRemoved(sid);
+
+  // Overwrite the record storing the sessionId's key data with a zero
+  // length record to delete it.
+  vector<uint8_t> emptyKeydata;
+  GMPTask* resolve = WrapTask(mCallback, &GMPDecryptorCallback::ResolvePromise, aPromiseId);
+  static const char* message = "Could not remove session";
+  GMPTask* reject = WrapTask(mCallback,
+                             &GMPDecryptorCallback::RejectPromise,
+                             aPromiseId,
+                             kGMPInvalidAccessError,
+                             message,
+                             strlen(message));
+  StoreData(sessionId, emptyKeydata, resolve, reject);
+}
+
+void
+ClearKeySessionManager::SetServerCertificate(uint32_t aPromiseId,
+                                             const uint8_t* aServerCert,
+                                             uint32_t aServerCertSize)
+{
+  // ClearKey CDM doesn't support this method by spec.
+  CK_LOGD("ClearKeySessionManager::SetServerCertificate");
+  mCallback->RejectPromise(aPromiseId, kGMPNotSupportedError,
+                           nullptr /* message */, 0 /* messageLen */);
+}
+
+void
+ClearKeySessionManager::Decrypt(GMPBuffer* aBuffer,
+                                GMPEncryptedBufferMetadata* aMetadata)
+{
+  CK_LOGD("ClearKeySessionManager::Decrypt");
+
+  if (!mThread) {
+    CK_LOGW("No decrypt thread");
+    mCallback->Decrypted(aBuffer, GMPGenericErr);
+    return;
+  }
+
+  mThread->Post(WrapTaskRefCounted(this,
+                                   &ClearKeySessionManager::DoDecrypt,
+                                   aBuffer, aMetadata));
+}
+
+void
+ClearKeySessionManager::DoDecrypt(GMPBuffer* aBuffer,
+                                  GMPEncryptedBufferMetadata* aMetadata)
+{
+  CK_LOGD("ClearKeySessionManager::DoDecrypt");
+
+  GMPErr rv = mDecryptionManager->Decrypt(aBuffer->Data(), aBuffer->Size(),
+                                          CryptoMetaData(aMetadata));
+  CK_LOGD("DeDecrypt finished with code %x\n", rv);
+  mCallback->Decrypted(aBuffer, rv);
+}
+
+void
+ClearKeySessionManager::Shutdown()
+{
+  CK_LOGD("ClearKeySessionManager::Shutdown %p", this);
+
+  for (auto it = mSessions.begin(); it != mSessions.end(); it++) {
+    delete it->second;
+  }
+  mSessions.clear();
+}
+
+void
+ClearKeySessionManager::DecryptingComplete()
+{
+  CK_LOGD("ClearKeySessionManager::DecryptingComplete %p", this);
+
+  GMPThread* thread = mThread;
+  thread->Join();
+
+  Shutdown();
+  mDecryptionManager = nullptr;
+  Release();
+}