Correct CryptoException error returned before keys have been loaded

[ Merge of http://go/wvgerrit/25983 ]

Earlier versions of android returned CryptoException with
error code ERROR_NO_KEY, when a decrypt call was received before keys were
loaded. Changes to O resulted in ERROR_SESSION_NOT_OPENED being returned
instead. This CL reverts the behaviour.

Also a change to correct CDM error code numbering in comments.

Test: Verified by unit and integration tests

b/37219830

Change-Id: I43758cd29cf9d1945f878ac352a5f26538b48cdb

libwvdrmengine/cdm/core/include/wv_cdm_types.h

@@ -229,72 +229,74 @@ enum CdmResponseType {
   INVALID_PARAMETERS_ENG_8,
   INVALID_PARAMETERS_ENG_9,
   INVALID_PARAMETERS_ENG_10,
-  INVALID_PARAMETERS_ENG_11, /* 190 */
-  INVALID_PARAMETERS_ENG_12,
+  INVALID_PARAMETERS_ENG_11,
+  INVALID_PARAMETERS_ENG_12, /* 190 */
   SESSION_NOT_FOUND_13,
   SESSION_NOT_FOUND_14,
   SESSION_NOT_FOUND_15,
-  SESSION_NOT_FOUND_16, /* 195 */
-  KEY_NOT_FOUND_3,
+  SESSION_NOT_FOUND_16,
+  KEY_NOT_FOUND_3, /* 195 */
   KEY_NOT_FOUND_4,
   KEY_NOT_FOUND_5,
   KEY_NOT_FOUND_6,
-  INVALID_SESSION_1, /* 200 */
-  NO_DEVICE_KEY_1,
+  INVALID_SESSION_1,
+  NO_DEVICE_KEY_1, /* 200 */
   NO_CONTENT_KEY_2,
   INSUFFICIENT_CRYPTO_RESOURCES_2,
   INVALID_PARAMETERS_ENG_13,
-  INVALID_PARAMETERS_ENG_14, /* 205 */
-  INVALID_PARAMETERS_ENG_15,
+  INVALID_PARAMETERS_ENG_14,
+  INVALID_PARAMETERS_ENG_15, /* 205 */
   INVALID_PARAMETERS_ENG_16,
   DEVICE_CERTIFICATE_ERROR_5,
   CERT_PROVISIONING_CLIENT_TOKEN_ERROR_1,
-  CERT_PROVISIONING_CLIENT_TOKEN_ERROR_2, /* 210 */
-  LICENSING_CLIENT_TOKEN_ERROR_1,
+  CERT_PROVISIONING_CLIENT_TOKEN_ERROR_2,
+  LICENSING_CLIENT_TOKEN_ERROR_1, /* 210 */
   ANALOG_OUTPUT_ERROR,
   UNKNOWN_SELECT_KEY_ERROR_1,
   UNKNOWN_SELECT_KEY_ERROR_2,
-  CREATE_USAGE_TABLE_ERROR, /* 215 */
-  LOAD_USAGE_HEADER_GENERATION_SKEW,
+  CREATE_USAGE_TABLE_ERROR,
+  LOAD_USAGE_HEADER_GENERATION_SKEW, /* 215 */
   LOAD_USAGE_HEADER_SIGNATURE_FAILURE,
   LOAD_USAGE_HEADER_BAD_MAGIC,
   LOAD_USAGE_HEADER_UNKNOWN_ERROR,
-  INVALID_PARAMETERS_ENG_17, /* 220 */
-  INVALID_PARAMETERS_ENG_18,
+  INVALID_PARAMETERS_ENG_17,
+  INVALID_PARAMETERS_ENG_18, /* 220 */
   INSUFFICIENT_CRYPTO_RESOURCES_3,
   CREATE_USAGE_ENTRY_UNKNOWN_ERROR,
   LOAD_USAGE_ENTRY_GENERATION_SKEW,
-  LOAD_USAGE_ENTRY_SIGNATURE_FAILURE, /* 225 */
-  LOAD_USAGE_ENTRY_UNKNOWN_ERROR,
+  LOAD_USAGE_ENTRY_SIGNATURE_FAILURE,
+  LOAD_USAGE_ENTRY_UNKNOWN_ERROR, /* 225 */
   INVALID_PARAMETERS_ENG_19,
   INVALID_PARAMETERS_ENG_20,
   UPDATE_USAGE_ENTRY_UNKNOWN_ERROR,
-  INVALID_PARAMETERS_ENG_21, /* 230 */
-  SHRINK_USAGE_TABLER_HEADER_UNKNOWN_ERROR,
+  INVALID_PARAMETERS_ENG_21,
+  SHRINK_USAGE_TABLER_HEADER_UNKNOWN_ERROR, /* 230 */
   MOVE_USAGE_ENTRY_UNKNOWN_ERROR,
   COPY_OLD_USAGE_ENTRY_UNKNOWN_ERROR,
   INVALID_PARAMETERS_ENG_22,
-  STORE_LICENSE_ERROR_4, /* 235 */
-  LIST_LICENSES_ERROR,
+  STORE_LICENSE_ERROR_4,
+  LIST_LICENSES_ERROR, /* 235 */
   INVALID_PARAMETERS_ENG_23,
   USAGE_INFORMATION_SUPPORT_FAILED,
   USAGE_SUPPORT_GET_API_FAILED,
-  UNEXPECTED_EMPTY_USAGE_ENTRY, /* 240 */
-  INVALID_USAGE_ENTRY_NUMBER_MODIFICATION,
+  UNEXPECTED_EMPTY_USAGE_ENTRY,
+  INVALID_USAGE_ENTRY_NUMBER_MODIFICATION, /* 240 */
   USAGE_INVALID_NEW_ENTRY,
   USAGE_INVALID_PARAMETERS_1,
   USAGE_RETRIEVE_LICENSE_FAILED,
-  USAGE_RETRIEVE_USAGE_INFO_FAILED, /* 245 */
-  USAGE_RETRIEVE_INVALID_STORAGE_TYPE,
+  USAGE_RETRIEVE_USAGE_INFO_FAILED,
+  USAGE_RETRIEVE_INVALID_STORAGE_TYPE, /* 245 */
   USAGE_ENTRY_NUMBER_MISMATCH,
   USAGE_STORE_LICENSE_FAILED,
   USAGE_STORE_USAGE_INFO_FAILED,
-  USAGE_INVALID_LOAD_ENTRY, /* 250 */
-  RELEASE_ALL_USAGE_INFO_ERROR_4,
+  USAGE_INVALID_LOAD_ENTRY,
+  RELEASE_ALL_USAGE_INFO_ERROR_4, /* 250 */
   RELEASE_ALL_USAGE_INFO_ERROR_5,
   RELEASE_USAGE_INFO_FAILED,
   INCORRECT_USAGE_SUPPORT_TYPE_1,
-  INCORRECT_USAGE_SUPPORT_TYPE_2, /* 255 */
+  INCORRECT_USAGE_SUPPORT_TYPE_2,
+  KEY_PROHIBITED_FOR_SECURITY_LEVEL, /* 255 */
+  KEY_NOT_FOUND_IN_SESSION,
 };
 
 enum CdmKeyStatus {

libwvdrmengine/cdm/core/test/test_printers.cpp

@@ -568,6 +568,12 @@ void PrintTo(const enum CdmResponseType& value, ::std::ostream* os) {
     case INCORRECT_USAGE_SUPPORT_TYPE_2:
       *os << "INCORRECT_USAGE_SUPPORT_TYPE_2";
       break;
+    case KEY_PROHIBITED_FOR_SECURITY_LEVEL:
+      *os << "KEY_PROHIBITED_FOR_SECURITY_LEVEL";
+      break;
+    case KEY_NOT_FOUND_IN_SESSION:
+      *os << "KEY_NOT_FOUND_IN_SESSION";
+      break;
 
     default:
       *os                                        << "Unknown CdmResponseType";

libwvdrmengine/cdm/src/wv_content_decryption_module.cpp

@@ -379,10 +379,7 @@ CdmResponseType WvContentDecryptionModule::Decrypt(
         cdm_engine->GetMetrics(),
         cdm_engine_find_session_for_key_,
         status);
-    if (!status) {
-      LOGE("WvContentDecryptionModule::Decrypt: unable to find session");
-      return SESSION_NOT_FOUND_FOR_DECRYPT;
-    }
+    if (!status) return KEY_NOT_FOUND_IN_SESSION;
   }
   CdmResponseType sts;
   M_TIME(

libwvdrmengine/include/mapErrors-inl.h

@@ -23,6 +23,7 @@ static android::status_t mapCdmResponseType(wvcdm::CdmResponseType res) {
       return android::OK;
     case wvcdm::NEED_KEY:
     case wvcdm::DECRYPT_NOT_READY:
+    case wvcdm::KEY_NOT_FOUND_IN_SESSION:
       return android::ERROR_DRM_NO_LICENSE;
     case wvcdm::NEED_PROVISIONING:
       return android::ERROR_DRM_NOT_PROVISIONED;
@@ -368,6 +369,7 @@ static android::status_t mapCdmResponseType(wvcdm::CdmResponseType res) {
       return android::ERROR_DRM_CANNOT_HANDLE;
     case wvcdm::INSUFFICIENT_OUTPUT_PROTECTION:
     case wvcdm::ANALOG_OUTPUT_ERROR:
+    case wvcdm::KEY_PROHIBITED_FOR_SECURITY_LEVEL:
       return android::ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION;
     case wvcdm::SESSION_NOT_FOUND_12:
       return kSessionNotFound12;

libwvdrmengine/mediacrypto/src/WVCryptoPlugin.cpp

@@ -306,6 +306,7 @@ status_t WVCryptoPlugin::attemptDecrypt(const CdmDecryptionParameters& params,
             "Error decrypting data: insufficient crypto resources");
         break;
       case wvcdm::NEED_KEY:
+      case wvcdm::KEY_NOT_FOUND_IN_SESSION:
         errorDetailMsg->setTo(
             "Error decrypting data: requested key has not been loaded");
         break;

libwvdrmengine/mediacrypto/src_hidl/WVCryptoPlugin.cpp

@@ -338,6 +338,7 @@ status_t WVCryptoPlugin::attemptDecrypt(const CdmDecryptionParameters& params,
             "Error decrypting data: insufficient crypto resources");
         break;
       case wvcdm::NEED_KEY:
+      case wvcdm::KEY_NOT_FOUND_IN_SESSION:
         errorDetailMsg->assign(
             "Error decrypting data: requested key has not been loaded");
         break;