3db90f54c1
bug: 12702350 Squashed commit of these CLs from the widevine cdm repo: Cast V2 cdm support https://widevine-internal-review.googlesource.com/#/c/9190/ Add CASTv2 Support to DrmPlugin https://widevine-internal-review.googlesource.com/#/c/9228/ Test for CastV2 authentication APIs https://widevine-internal-review.googlesource.com/9550 Change-Id: I6d66bc1bbd653db5542c68687b30b441dd20617f
920 lines
30 KiB
C++
920 lines
30 KiB
C++
//
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// Copyright 2013 Google Inc. All Rights Reserved.
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//
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//#define LOG_NDEBUG 0
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#define LOG_TAG "WVCdm"
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#include <utils/Log.h>
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#include "WVDrmPlugin.h"
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#include <endian.h>
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#include <string.h>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "mapErrors-inl.h"
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#include "media/stagefright/MediaErrors.h"
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#include "utils/Errors.h"
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#include "wv_cdm_constants.h"
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namespace wvdrm {
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using namespace android;
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using namespace std;
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using namespace wvcdm;
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static const char* const kResetSecurityLevel = "";
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static const char* const kEnable = "enable";
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static const char* const kDisable = "disable";
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WVDrmPlugin::WVDrmPlugin(WvContentDecryptionModule* cdm,
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WVGenericCryptoInterface* crypto)
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: mCDM(cdm), mCrypto(crypto) {}
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WVDrmPlugin::~WVDrmPlugin() {
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typedef map<CdmSessionId, CryptoSession>::iterator mapIterator;
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for (mapIterator iter = mCryptoSessions.begin();
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iter != mCryptoSessions.end();
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++iter) {
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bool bRes = mCDM->DetachEventListener(iter->first, this);
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if (!bRes) {
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ALOGE("Received failure when trying to detach WVDrmPlugin as an event"
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"listener.");
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}
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CdmResponseType res = mCDM->CloseSession(iter->first);
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if (!isCdmResponseTypeSuccess(res)) {
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ALOGE("Failed to close session while destroying WVDrmPlugin");
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}
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}
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mCryptoSessions.clear();
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}
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status_t WVDrmPlugin::openSession(Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId;
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CdmResponseType res = mCDM->OpenSession("com.widevine", &mPropertySet,
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&cdmSessionId);
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if (!isCdmResponseTypeSuccess(res)) {
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return mapAndNotifyOfCdmResponseType(sessionId, res);
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}
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bool success = false;
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// Register for events
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bool listenerAttached = mCDM->AttachEventListener(cdmSessionId, this);
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if (listenerAttached) {
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// Construct a CryptoSession
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CdmQueryMap info;
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res = mCDM->QueryKeyControlInfo(cdmSessionId, &info);
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if (isCdmResponseTypeSuccess(res) &&
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info.count(QUERY_KEY_OEMCRYPTO_SESSION_ID)) {
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OEMCrypto_SESSION oecSessionId;
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istringstream(info[QUERY_KEY_OEMCRYPTO_SESSION_ID]) >> oecSessionId;
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mCryptoSessions[cdmSessionId] = CryptoSession(oecSessionId);
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success = true;
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} else {
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ALOGE("Unable to query key control info.");
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}
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} else {
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ALOGE("Received failure when trying to attach WVDrmPlugin as an event"
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"listener.");
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}
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if (success) {
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// Marshal Session ID
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sessionId.clear();
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sessionId.appendArray(reinterpret_cast<const uint8_t*>(cdmSessionId.data()),
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cdmSessionId.size());
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return android::OK;
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} else {
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if (listenerAttached) {
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mCDM->DetachEventListener(cdmSessionId, this);
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}
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mCDM->CloseSession(cdmSessionId);
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if (!isCdmResponseTypeSuccess(res)) {
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// We got an error code we can return.
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return mapAndNotifyOfCdmResponseType(sessionId, res);
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} else {
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// We got a failure that did not give us an error code, such as a failure
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// of AttachEventListener() or the key being missing from the map.
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return kErrorCDMGeneric;
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}
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}
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}
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status_t WVDrmPlugin::closeSession(const Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmResponseType res = mCDM->CloseSession(cdmSessionId);
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if (isCdmResponseTypeSuccess(res)) {
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mCryptoSessions.erase(cdmSessionId);
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}
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return mapAndNotifyOfCdmResponseType(sessionId, res);
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}
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status_t WVDrmPlugin::getKeyRequest(
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const Vector<uint8_t>& scope,
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const Vector<uint8_t>& initData,
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const String8& mimeType,
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KeyType keyType,
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const KeyedVector<String8, String8>& optionalParameters,
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Vector<uint8_t>& request,
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String8& defaultUrl) {
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CdmLicenseType cdmLicenseType;
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CdmSessionId cdmSessionId;
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CdmKeySetId cdmKeySetId;
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if (keyType == kKeyType_Offline) {
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cdmLicenseType = kLicenseTypeOffline;
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cdmSessionId.assign(scope.begin(), scope.end());
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} else if (keyType == kKeyType_Streaming) {
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cdmLicenseType = kLicenseTypeStreaming;
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cdmSessionId.assign(scope.begin(), scope.end());
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} else if (keyType == kKeyType_Release) {
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cdmLicenseType = kLicenseTypeRelease;
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cdmKeySetId.assign(scope.begin(), scope.end());
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} else {
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return android::ERROR_DRM_CANNOT_HANDLE;
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}
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string cdmMimeType = mimeType.string();
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// Provide backwards-compatibility for versions of apps that pass the wrong
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// MIME type.
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// TODO(b/13731637) - Remove this.
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if (cdmMimeType == "") {
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ALOGW("ALERT: Empty MIME type is supported for backwards-compatibility "
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"only and may go away in the future. Switch to \"video/mp4\" to "
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"become compliant.");
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cdmMimeType = "video/mp4";
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} else if (cdmMimeType == "video/avc") {
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ALOGW("ALERT: MIME type \"video/avc\" is supported for backwards-"
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"compatibility only and may go away in the future. Switch to "
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"\"video/mp4\" to become compliant.");
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cdmMimeType = "video/mp4";
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}
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CdmInitData processedInitData;
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if (cdmMimeType == wvcdm::ISO_BMFF_MIME_TYPE) {
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// For ISO-BMFF, we need to wrap the init data in a new PSSH header.
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static const char psshPrefix[] = {
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0, 0, 0, 0, // Total size
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'p', 's', 's', 'h', // "PSSH"
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0, 0, 0, 0, // Flags - must be zero
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0xED, 0xEF, 0x8B, 0xA9, 0x79, 0xD6, 0x4A, 0xCE, // Widevine UUID
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0xA3, 0xC8, 0x27, 0xDC, 0xD5, 0x1D, 0x21, 0xED,
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0, 0, 0, 0 // Size of initData
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};
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processedInitData.assign(psshPrefix, sizeof(psshPrefix) / sizeof(char));
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processedInitData.append(reinterpret_cast<const char*>(initData.array()),
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initData.size());
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const size_t kPsshBoxSizeLocation = 0;
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const size_t kInitDataSizeLocation =
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sizeof(psshPrefix) - sizeof(uint32_t);
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uint32_t psshBoxSize = htonl(processedInitData.size());
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uint32_t initDataSize = htonl(initData.size());
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memcpy(&processedInitData[kPsshBoxSizeLocation], &psshBoxSize,
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sizeof(uint32_t));
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memcpy(&processedInitData[kInitDataSizeLocation], &initDataSize,
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sizeof(uint32_t));
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} else {
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// For other formats, we can pass the init data through unmodified.
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processedInitData.assign(reinterpret_cast<const char*>(initData.array()),
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initData.size());
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}
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CdmAppParameterMap cdmParameters;
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for (size_t i = 0; i < optionalParameters.size(); ++i) {
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const String8& key = optionalParameters.keyAt(i);
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const String8& value = optionalParameters.valueAt(i);
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string cdmKey(key.string(), key.size());
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string cdmValue(value.string(), value.size());
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cdmParameters[cdmKey] = cdmValue;
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}
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CdmKeyMessage keyRequest;
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string cdmDefaultUrl;
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CdmResponseType res = mCDM->GenerateKeyRequest(cdmSessionId, cdmKeySetId,
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cdmMimeType, processedInitData,
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cdmLicenseType, cdmParameters,
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&keyRequest, &cdmDefaultUrl);
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if (isCdmResponseTypeSuccess(res)) {
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defaultUrl.clear();
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defaultUrl.setTo(cdmDefaultUrl.data(), cdmDefaultUrl.size());
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request.clear();
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request.appendArray(reinterpret_cast<const uint8_t*>(keyRequest.data()),
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keyRequest.size());
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}
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if (keyType == kKeyType_Release) {
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// When releasing keys, we do not have a session ID.
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return mapCdmResponseType(res);
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} else {
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// For all other requests, we have a session ID.
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return mapAndNotifyOfCdmResponseType(scope, res);
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}
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}
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status_t WVDrmPlugin::provideKeyResponse(
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const Vector<uint8_t>& scope,
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const Vector<uint8_t>& response,
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Vector<uint8_t>& keySetId) {
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CdmSessionId cdmSessionId;
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CdmKeyResponse cdmResponse(response.begin(), response.end());
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CdmKeySetId cdmKeySetId;
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bool isRequest = (memcmp(scope.array(), SESSION_ID_PREFIX,
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sizeof(SESSION_ID_PREFIX) - 1) == 0);
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bool isRelease = (memcmp(scope.array(), KEY_SET_ID_PREFIX,
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sizeof(KEY_SET_ID_PREFIX) - 1) == 0);
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if (isRequest) {
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cdmSessionId.assign(scope.begin(), scope.end());
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} else if (isRelease) {
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cdmKeySetId.assign(scope.begin(), scope.end());
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} else {
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return android::ERROR_DRM_CANNOT_HANDLE;
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}
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CdmResponseType res = mCDM->AddKey(cdmSessionId, cdmResponse, &cdmKeySetId);
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if (isRequest && isCdmResponseTypeSuccess(res)) {
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keySetId.clear();
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keySetId.appendArray(reinterpret_cast<const uint8_t*>(cdmKeySetId.data()),
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cdmKeySetId.size());
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}
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if (isRelease) {
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// When releasing keys, we do not have a session ID.
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return mapCdmResponseType(res);
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} else {
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// For all other requests, we have a session ID.
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status_t status = mapAndNotifyOfCdmResponseType(scope, res);
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// For "NEED_KEY," we still want to send the notifcation, but then we don't
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// return the error. This is because "NEED_KEY" from AddKey() is an
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// expected behavior when sending a privacy certificate.
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if (res == wvcdm::NEED_KEY && mPropertySet.use_privacy_mode()) {
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status = android::OK;
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}
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return status;
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}
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}
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status_t WVDrmPlugin::removeKeys(const Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmResponseType res = mCDM->CancelKeyRequest(cdmSessionId);
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return mapAndNotifyOfCdmResponseType(sessionId, res);
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}
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status_t WVDrmPlugin::restoreKeys(const Vector<uint8_t>& sessionId,
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const Vector<uint8_t>& keySetId) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmKeySetId cdmKeySetId(keySetId.begin(), keySetId.end());
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CdmResponseType res = mCDM->RestoreKey(cdmSessionId, cdmKeySetId);
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return mapAndNotifyOfCdmResponseType(sessionId, res);
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}
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status_t WVDrmPlugin::queryKeyStatus(
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const Vector<uint8_t>& sessionId,
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KeyedVector<String8, String8>& infoMap) const {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmQueryMap cdmLicenseInfo;
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CdmResponseType res = mCDM->QueryKeyStatus(cdmSessionId, &cdmLicenseInfo);
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if (isCdmResponseTypeSuccess(res)) {
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infoMap.clear();
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for (CdmQueryMap::const_iterator iter = cdmLicenseInfo.begin();
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iter != cdmLicenseInfo.end();
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++iter) {
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const string& cdmKey = iter->first;
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const string& cdmValue = iter->second;
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String8 key(cdmKey.data(), cdmKey.size());
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String8 value(cdmValue.data(), cdmValue.size());
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infoMap.add(key, value);
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}
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}
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return mapCdmResponseType(res);
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}
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status_t WVDrmPlugin::getProvisionRequest(const String8& cert_type,
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const String8& cert_authority,
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Vector<uint8_t>& request,
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String8& defaultUrl) {
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CdmProvisioningRequest cdmProvisionRequest;
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string cdmDefaultUrl;
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CdmCertificateType cdmCertType = kCertificateWidevine;
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if (cert_type == "X.509") {
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cdmCertType = kCertificateX509;
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}
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string cdmCertAuthority = cert_authority.string();
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CdmResponseType res = mCDM->GetProvisioningRequest(cdmCertType,
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cdmCertAuthority,
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&cdmProvisionRequest,
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&cdmDefaultUrl);
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if (isCdmResponseTypeSuccess(res)) {
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request.clear();
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request.appendArray(reinterpret_cast<const uint8_t*>(
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cdmProvisionRequest.data()),
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cdmProvisionRequest.size());
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defaultUrl.clear();
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defaultUrl.setTo(cdmDefaultUrl.data(), cdmDefaultUrl.size());
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}
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return mapCdmResponseType(res);
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}
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status_t WVDrmPlugin::provideProvisionResponse(
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const Vector<uint8_t>& response,
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Vector<uint8_t>& certificate,
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Vector<uint8_t>& wrapped_key) {
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CdmProvisioningResponse cdmResponse(response.begin(), response.end());
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string cdmCertificate;
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string cdmWrappedKey;
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CdmResponseType res = mCDM->HandleProvisioningResponse(cdmResponse,
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&cdmCertificate,
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&cdmWrappedKey);
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if (isCdmResponseTypeSuccess(res)) {
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certificate.clear();
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certificate.appendArray(
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reinterpret_cast<const uint8_t*>(cdmCertificate.data()),
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cdmCertificate.size());
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wrapped_key.clear();
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wrapped_key.appendArray(
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reinterpret_cast<const uint8_t*>(cdmWrappedKey.data()),
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cdmWrappedKey.size());
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}
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return mapCdmResponseType(res);
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}
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status_t WVDrmPlugin::getSecureStops(List<Vector<uint8_t> >& secureStops) {
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CdmSecureStops cdmSecureStops;
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CdmResponseType res = mCDM->GetSecureStops(&cdmSecureStops);
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if (isCdmResponseTypeSuccess(res)) {
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secureStops.clear();
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for (CdmSecureStops::const_iterator iter = cdmSecureStops.begin();
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iter != cdmSecureStops.end();
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++iter) {
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const string& cdmStop = *iter;
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Vector<uint8_t> stop;
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stop.appendArray(reinterpret_cast<const uint8_t*>(cdmStop.data()),
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cdmStop.size());
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secureStops.push_back(stop);
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}
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}
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return mapCdmResponseType(res);
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}
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status_t WVDrmPlugin::releaseSecureStops(const Vector<uint8_t>& ssRelease) {
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CdmSecureStopReleaseMessage cdmMessage(ssRelease.begin(), ssRelease.end());
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CdmResponseType res = mCDM->ReleaseSecureStops(cdmMessage);
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return mapCdmResponseType(res);
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}
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status_t WVDrmPlugin::getPropertyString(const String8& name,
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String8& value) const {
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if (name == "vendor") {
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value = "Google";
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} else if (name == "version") {
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value = "1.0";
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} else if (name == "description") {
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value = "Widevine CDM";
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} else if (name == "algorithms") {
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value = "AES/CBC/NoPadding,HmacSHA256";
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} else if (name == "securityLevel") {
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string requestedLevel = mPropertySet.security_level();
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if (requestedLevel.length() > 0) {
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value = requestedLevel.c_str();
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} else {
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CdmQueryMap status;
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CdmResponseType res = mCDM->QueryStatus(&status);
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if (!isCdmResponseTypeSuccess(res)) {
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ALOGE("Error querying CDM status: %u", res);
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return mapCdmResponseType(res);
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} else if (!status.count(QUERY_KEY_SECURITY_LEVEL)) {
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ALOGE("CDM did not report a security level");
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return kErrorCDMGeneric;
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}
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value = status[QUERY_KEY_SECURITY_LEVEL].c_str();
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}
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} else if (name == "systemId") {
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CdmQueryMap status;
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CdmResponseType res = mCDM->QueryStatus(&status);
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if (res != wvcdm::NO_ERROR) {
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ALOGE("Error querying CDM status: %u", res);
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return mapCdmResponseType(res);
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} else if (!status.count(QUERY_KEY_SYSTEM_ID)) {
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ALOGE("CDM did not report a system ID");
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return kErrorCDMGeneric;
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}
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value = status[QUERY_KEY_SYSTEM_ID].c_str();
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} else if (name == "privacyMode") {
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if (mPropertySet.use_privacy_mode()) {
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value = kEnable;
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} else {
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value = kDisable;
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}
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} else if (name == "sessionSharing") {
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if (mPropertySet.is_session_sharing_enabled()) {
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value = kEnable;
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} else {
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value = kDisable;
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}
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} else {
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ALOGE("App requested unknown string property %s", name.string());
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return android::ERROR_DRM_CANNOT_HANDLE;
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}
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return android::OK;
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}
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status_t WVDrmPlugin::getPropertyByteArray(const String8& name,
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Vector<uint8_t>& value) const {
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if (name == "deviceUniqueId") {
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CdmQueryMap status;
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CdmResponseType res = mCDM->QueryStatus(&status);
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if (!isCdmResponseTypeSuccess(res)) {
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ALOGE("Error querying CDM status: %u", res);
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return mapCdmResponseType(res);
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} else if (!status.count(QUERY_KEY_DEVICE_ID)) {
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ALOGE("CDM did not report a device unique ID");
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return kErrorCDMGeneric;
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}
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const string& uniqueId = status[QUERY_KEY_DEVICE_ID];
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value.clear();
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value.appendArray(reinterpret_cast<const uint8_t*>(uniqueId.data()),
|
|
uniqueId.size());
|
|
} else if (name == "provisioningUniqueId") {
|
|
CdmQueryMap status;
|
|
|
|
CdmResponseType res = mCDM->QueryStatus(&status);
|
|
|
|
if (!isCdmResponseTypeSuccess(res)) {
|
|
ALOGE("Error querying CDM status: %u", res);
|
|
return mapCdmResponseType(res);
|
|
} else if (!status.count(QUERY_KEY_PROVISIONING_ID)) {
|
|
ALOGE("CDM did not report a provisioning unique ID");
|
|
return kErrorCDMGeneric;
|
|
}
|
|
|
|
const string& uniqueId = status[QUERY_KEY_PROVISIONING_ID];
|
|
|
|
value.clear();
|
|
value.appendArray(reinterpret_cast<const uint8_t*>(uniqueId.data()),
|
|
uniqueId.size());
|
|
} else if (name == "serviceCertificate") {
|
|
vector<uint8_t> cert = mPropertySet.service_certificate();
|
|
value.clear();
|
|
value.appendArray(&cert[0], cert.size());
|
|
} else {
|
|
ALOGE("App requested unknown byte array property %s", name.string());
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
status_t WVDrmPlugin::setPropertyString(const String8& name,
|
|
const String8& value) {
|
|
if (name == "securityLevel") {
|
|
if (mCryptoSessions.size() == 0) {
|
|
if (value == QUERY_VALUE_SECURITY_LEVEL_L3.c_str()) {
|
|
mPropertySet.set_security_level(QUERY_VALUE_SECURITY_LEVEL_L3);
|
|
} else if (value == kResetSecurityLevel) {
|
|
mPropertySet.set_security_level("");
|
|
} else {
|
|
ALOGE("App requested invalid security level %s", value.string());
|
|
return android::BAD_VALUE;
|
|
}
|
|
} else {
|
|
ALOGE("App tried to change security level while sessions are open.");
|
|
return kErrorSessionIsOpen;
|
|
}
|
|
} else if (name == "privacyMode") {
|
|
if (value == kEnable) {
|
|
mPropertySet.set_use_privacy_mode(true);
|
|
} else if (value == kDisable) {
|
|
mPropertySet.set_use_privacy_mode(false);
|
|
} else {
|
|
ALOGE("App requested unknown privacy mode %s", value.string());
|
|
return android::BAD_VALUE;
|
|
}
|
|
} else if (name == "sessionSharing") {
|
|
if (mCryptoSessions.size() == 0) {
|
|
if (value == kEnable) {
|
|
mPropertySet.set_is_session_sharing_enabled(true);
|
|
} else if (value == kDisable) {
|
|
mPropertySet.set_is_session_sharing_enabled(false);
|
|
} else {
|
|
ALOGE("App requested unknown sharing type %s", value.string());
|
|
return android::BAD_VALUE;
|
|
}
|
|
} else {
|
|
ALOGE("App tried to change key sharing while sessions are open.");
|
|
return kErrorSessionIsOpen;
|
|
}
|
|
} else {
|
|
ALOGE("App set unknown string property %s", name.string());
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
status_t WVDrmPlugin::setPropertyByteArray(const String8& name,
|
|
const Vector<uint8_t>& value) {
|
|
if (name == "serviceCertificate") {
|
|
vector<uint8_t> cert(value.begin(), value.end());
|
|
mPropertySet.set_service_certificate(cert);
|
|
} else {
|
|
ALOGE("App set unknown byte array property %s", name.string());
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
status_t WVDrmPlugin::setCipherAlgorithm(const Vector<uint8_t>& sessionId,
|
|
const String8& algorithm) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (algorithm == "AES/CBC/NoPadding") {
|
|
cryptoSession.setCipherAlgorithm(OEMCrypto_AES_CBC_128_NO_PADDING);
|
|
} else {
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
status_t WVDrmPlugin::setMacAlgorithm(const Vector<uint8_t>& sessionId,
|
|
const String8& algorithm) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (algorithm == "HmacSHA256") {
|
|
cryptoSession.setMacAlgorithm(OEMCrypto_HMAC_SHA256);
|
|
} else {
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
status_t WVDrmPlugin::encrypt(const Vector<uint8_t>& sessionId,
|
|
const Vector<uint8_t>& keyId,
|
|
const Vector<uint8_t>& input,
|
|
const Vector<uint8_t>& iv,
|
|
Vector<uint8_t>& output) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
const CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (cryptoSession.cipherAlgorithm() == kInvalidCrytpoAlgorithm) {
|
|
return android::NO_INIT;
|
|
}
|
|
|
|
OEMCryptoResult res = mCrypto->selectKey(cryptoSession.oecSessionId(),
|
|
keyId.array(), keyId.size());
|
|
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_SelectKey failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
|
|
output.resize(input.size());
|
|
|
|
res = mCrypto->encrypt(cryptoSession.oecSessionId(), input.array(),
|
|
input.size(), iv.array(),
|
|
cryptoSession.cipherAlgorithm(), output.editArray());
|
|
|
|
if (res == OEMCrypto_SUCCESS) {
|
|
return android::OK;
|
|
} else {
|
|
ALOGE("OEMCrypto_Generic_Encrypt failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
}
|
|
|
|
status_t WVDrmPlugin::decrypt(const Vector<uint8_t>& sessionId,
|
|
const Vector<uint8_t>& keyId,
|
|
const Vector<uint8_t>& input,
|
|
const Vector<uint8_t>& iv,
|
|
Vector<uint8_t>& output) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
const CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (cryptoSession.cipherAlgorithm() == kInvalidCrytpoAlgorithm) {
|
|
return android::NO_INIT;
|
|
}
|
|
|
|
OEMCryptoResult res = mCrypto->selectKey(cryptoSession.oecSessionId(),
|
|
keyId.array(), keyId.size());
|
|
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_SelectKey failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
|
|
output.resize(input.size());
|
|
|
|
res = mCrypto->decrypt(cryptoSession.oecSessionId(), input.array(),
|
|
input.size(), iv.array(),
|
|
cryptoSession.cipherAlgorithm(), output.editArray());
|
|
|
|
if (res == OEMCrypto_SUCCESS) {
|
|
return android::OK;
|
|
} else {
|
|
ALOGE("OEMCrypto_Generic_Decrypt failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
}
|
|
|
|
status_t WVDrmPlugin::sign(const Vector<uint8_t>& sessionId,
|
|
const Vector<uint8_t>& keyId,
|
|
const Vector<uint8_t>& message,
|
|
Vector<uint8_t>& signature) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
const CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (cryptoSession.macAlgorithm() == kInvalidCrytpoAlgorithm) {
|
|
return android::NO_INIT;
|
|
}
|
|
|
|
OEMCryptoResult res = mCrypto->selectKey(cryptoSession.oecSessionId(),
|
|
keyId.array(), keyId.size());
|
|
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_SelectKey failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
|
|
size_t signatureSize = 0;
|
|
|
|
res = mCrypto->sign(cryptoSession.oecSessionId(), message.array(),
|
|
message.size(), cryptoSession.macAlgorithm(),
|
|
NULL, &signatureSize);
|
|
|
|
if (res != OEMCrypto_ERROR_SHORT_BUFFER) {
|
|
ALOGE("OEMCrypto_Generic_Sign failed with %u when requesting signature "
|
|
"size", res);
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
} else {
|
|
return android::ERROR_DRM_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
signature.resize(signatureSize);
|
|
|
|
res = mCrypto->sign(cryptoSession.oecSessionId(), message.array(),
|
|
message.size(), cryptoSession.macAlgorithm(),
|
|
signature.editArray(), &signatureSize);
|
|
|
|
if (res == OEMCrypto_SUCCESS) {
|
|
return android::OK;
|
|
} else {
|
|
ALOGE("OEMCrypto_Generic_Sign failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
}
|
|
|
|
status_t WVDrmPlugin::verify(const Vector<uint8_t>& sessionId,
|
|
const Vector<uint8_t>& keyId,
|
|
const Vector<uint8_t>& message,
|
|
const Vector<uint8_t>& signature,
|
|
bool& match) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
const CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
if (cryptoSession.macAlgorithm() == kInvalidCrytpoAlgorithm) {
|
|
return android::NO_INIT;
|
|
}
|
|
|
|
OEMCryptoResult res = mCrypto->selectKey(cryptoSession.oecSessionId(),
|
|
keyId.array(), keyId.size());
|
|
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_SelectKey failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
|
|
res = mCrypto->verify(cryptoSession.oecSessionId(), message.array(),
|
|
message.size(), cryptoSession.macAlgorithm(),
|
|
signature.array(), signature.size());
|
|
|
|
if (res == OEMCrypto_SUCCESS) {
|
|
match = true;
|
|
return android::OK;
|
|
} else if (res == OEMCrypto_ERROR_SIGNATURE_FAILURE) {
|
|
match = false;
|
|
return android::OK;
|
|
} else {
|
|
ALOGE("OEMCrypto_Generic_Verify failed with %u", res);
|
|
return mapAndNotifyOfOEMCryptoResult(sessionId, res);
|
|
}
|
|
}
|
|
|
|
status_t WVDrmPlugin::signRSA(const Vector<uint8_t>& sessionId,
|
|
const String8& algorithm,
|
|
const Vector<uint8_t>& message,
|
|
const Vector<uint8_t>& wrappedKey,
|
|
Vector<uint8_t>& signature) {
|
|
CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
|
|
|
|
if (!mCryptoSessions.count(cdmSessionId)) {
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
}
|
|
|
|
const CryptoSession& cryptoSession = mCryptoSessions[cdmSessionId];
|
|
|
|
RSA_Padding_Scheme padding_scheme;
|
|
if (algorithm == "RSASSA-PSS-SHA1") {
|
|
padding_scheme = kSign_RSASSA_PSS;
|
|
} else if (algorithm == "PKCS1-BlockType1") {
|
|
padding_scheme = kSign_PKCS1_Block1;
|
|
} else {
|
|
ALOGE("Unknown RSA Algorithm %s", algorithm.string());
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
}
|
|
|
|
OEMCryptoResult res = mCrypto->loadDeviceRSAKey(cryptoSession.oecSessionId(),
|
|
wrappedKey.array(),
|
|
wrappedKey.size());
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_LoadDeviceRSAKey failed with %u", res);
|
|
return mapOEMCryptoResult(res);
|
|
}
|
|
|
|
size_t signatureSize = 0;
|
|
|
|
res = mCrypto->generateRSASignature(cryptoSession.oecSessionId(),
|
|
message.array(), message.size(),
|
|
NULL, &signatureSize, padding_scheme);
|
|
|
|
if (res != OEMCrypto_ERROR_SHORT_BUFFER) {
|
|
ALOGE("OEMCrypto_GenerateRSASignature failed with %u when requesting "
|
|
"signature size", res);
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
return mapOEMCryptoResult(res);
|
|
} else {
|
|
return android::ERROR_DRM_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
signature.resize(signatureSize);
|
|
|
|
res = mCrypto->generateRSASignature(cryptoSession.oecSessionId(),
|
|
message.array(), message.size(),
|
|
signature.editArray(), &signatureSize,
|
|
padding_scheme);
|
|
|
|
if (res != OEMCrypto_SUCCESS) {
|
|
ALOGE("OEMCrypto_GenerateRSASignature failed with %u", res);
|
|
return mapOEMCryptoResult(res);
|
|
}
|
|
|
|
return android::OK;
|
|
}
|
|
|
|
void WVDrmPlugin::onEvent(const CdmSessionId& cdmSessionId,
|
|
CdmEventType cdmEventType) {
|
|
Vector<uint8_t> sessionId;
|
|
EventType eventType = kDrmPluginEventVendorDefined;
|
|
|
|
switch (cdmEventType) {
|
|
case LICENSE_EXPIRED_EVENT:
|
|
eventType = kDrmPluginEventKeyExpired;
|
|
break;
|
|
case LICENSE_RENEWAL_NEEDED_EVENT:
|
|
eventType = kDrmPluginEventKeyNeeded;
|
|
break;
|
|
}
|
|
|
|
sessionId.appendArray(reinterpret_cast<const uint8_t*>(cdmSessionId.data()),
|
|
cdmSessionId.size());
|
|
|
|
// Call base-class method with translated event.
|
|
sendEvent(eventType, 0, &sessionId, NULL);
|
|
}
|
|
|
|
status_t WVDrmPlugin::mapAndNotifyOfCdmResponseType(
|
|
const Vector<uint8_t>& sessionId,
|
|
CdmResponseType res) {
|
|
if (res == wvcdm::NEED_PROVISIONING) {
|
|
sendEvent(kDrmPluginEventProvisionRequired, 0, &sessionId, NULL);
|
|
} else if (res == wvcdm::NEED_KEY) {
|
|
sendEvent(kDrmPluginEventKeyNeeded, 0, &sessionId, NULL);
|
|
}
|
|
|
|
return mapCdmResponseType(res);
|
|
}
|
|
|
|
status_t WVDrmPlugin::mapAndNotifyOfOEMCryptoResult(
|
|
const Vector<uint8_t>& sessionId,
|
|
OEMCryptoResult res) {
|
|
if (res == OEMCrypto_ERROR_NO_DEVICE_KEY) {
|
|
sendEvent(kDrmPluginEventProvisionRequired, 0, &sessionId, NULL);
|
|
}
|
|
return mapOEMCryptoResult(res);
|
|
}
|
|
|
|
status_t WVDrmPlugin::mapOEMCryptoResult(OEMCryptoResult res) {
|
|
switch (res) {
|
|
case OEMCrypto_SUCCESS:
|
|
return android::OK;
|
|
case OEMCrypto_ERROR_SIGNATURE_FAILURE:
|
|
return android::ERROR_DRM_TAMPER_DETECTED;
|
|
case OEMCrypto_ERROR_SHORT_BUFFER:
|
|
return kErrorIncorrectBufferSize;
|
|
case OEMCrypto_ERROR_NO_DEVICE_KEY:
|
|
return android::ERROR_DRM_NOT_PROVISIONED;
|
|
case OEMCrypto_ERROR_INVALID_SESSION:
|
|
return android::ERROR_DRM_SESSION_NOT_OPENED;
|
|
case OEMCrypto_ERROR_TOO_MANY_SESSIONS:
|
|
return kErrorTooManySessions;
|
|
case OEMCrypto_ERROR_INVALID_RSA_KEY:
|
|
return kErrorInvalidKey;
|
|
case OEMCrypto_ERROR_INSUFFICIENT_RESOURCES:
|
|
return android::ERROR_DRM_RESOURCE_BUSY;
|
|
case OEMCrypto_ERROR_NOT_IMPLEMENTED:
|
|
return android::ERROR_DRM_CANNOT_HANDLE;
|
|
case OEMCrypto_ERROR_UNKNOWN_FAILURE:
|
|
case OEMCrypto_ERROR_OPEN_SESSION_FAILED:
|
|
return android::ERROR_DRM_UNKNOWN;
|
|
default:
|
|
return android::UNKNOWN_ERROR;
|
|
}
|
|
}
|
|
|
|
} // namespace wvdrm
|