Merge "Add error details when offline license is not found" into udc-dev

libwvdrmengine/cdm/core/src/cdm_session.cpp

@@ -236,9 +236,21 @@ CdmResponseType CdmSession::RestoreOfflineSession(const CdmKeySetId& key_set_id,
          DeviceFiles::ResponseTypeToString(sub_error_code),
          IdToString(key_set_id));
     SetErrorDetail(error_detail, sub_error_code);
-    return sub_error_code == DeviceFiles::kFileNotFound
-               ? CdmResponseType(KEYSET_ID_NOT_FOUND_4)
-               : CdmResponseType(GET_LICENSE_ERROR);
+    switch (sub_error_code) {
+      case DeviceFiles::kFileNotFound:
+      case DeviceFiles::kFileNotFoundEAcces:
+      case DeviceFiles::kFileNotFoundEFault:
+      case DeviceFiles::kFileNotFoundELoop:
+      case DeviceFiles::kFileNotFoundENameTooLong:
+      case DeviceFiles::kFileNotFoundENoEnt:
+      case DeviceFiles::kFileNotFoundENoMem:
+      case DeviceFiles::kFileNotFoundENotDir:
+      case DeviceFiles::kFileNotFoundEOverflow:
+      case DeviceFiles::kFileNotFoundOther:
+        return (CdmResponseType(KEYSET_ID_NOT_FOUND_4));
+      default:
+        return (CdmResponseType(GET_LICENSE_ERROR));
+    }
   }
   offline_init_data_ = std::move(license_data.pssh_data);
   key_request_ = std::move(license_data.license_request);

libwvdrmengine/cdm/core/src/device_files.cpp

@@ -358,12 +358,56 @@ const char* DeviceFiles::ResponseTypeToString(ResponseType type) {
       return "IncorrectFileVersion";
     case kLicenseNotPresent:
       return "LicenseNotFound";
+    case kFileNotFoundEAcces:
+      return "FileNotFound_EAcces";
+    case kFileNotFoundEFault:
+      return "FileNotFound_EFault";
+    case kFileNotFoundELoop:
+      return "FileNotFound_ELoop";
+    case kFileNotFoundENameTooLong:
+      return "FileNotFound_ENameTooLong";
+    case kFileNotFoundENoEnt:
+      return "FileNotFound_ENoEnt";
+    case kFileNotFoundENoMem:
+      return "FileNotFound_ENoMem";
+    case kFileNotFoundENotDir:
+      return "FileNotFound_ENotDir";
+    case kFileNotFoundEOverflow:
+      return "FileNotFound_EOverflow";
+    case kFileNotFoundOther:
+      return "FileNotFound_Other";
     case kResponseTypeBase:  // Not a valid value.
       break;
   }
   return UnknownEnumValueToString(static_cast<int>(type));
 }
 
+// static
+DeviceFiles::ResponseType DeviceFiles::ErrnoToResponseType(int errno_value) {
+  switch (errno_value) {
+    case 0:
+      return kNoError;
+    case EACCES:
+      return kFileNotFoundEAcces;
+    case EFAULT:
+      return kFileNotFoundEFault;
+    case ELOOP:
+      return kFileNotFoundELoop;
+    case ENAMETOOLONG:
+      return kFileNotFoundENameTooLong;
+    case ENOENT:
+      return kFileNotFoundENoEnt;
+    case ENOMEM:
+      return kFileNotFoundENoMem;
+    case ENOTDIR:
+      return kFileNotFoundENotDir;
+    case EOVERFLOW:
+      return kFileNotFoundEOverflow;
+    default:
+      return kFileNotFoundOther;
+  }
+}
+
 // static
 std::set<std::string> DeviceFiles::reserved_license_ids_;
 std::mutex DeviceFiles::reserved_license_ids_mutex_;
@@ -1999,9 +2043,12 @@ DeviceFiles::ResponseType DeviceFiles::RetrieveHashedFile(
 
   path += name;
 
-  if (!file_system_->Exists(path)) {
-    LOGW("File does not exist: path = %s", path.c_str());
-    return kFileNotFound;
+  int errno_value = 0;
+  if (!file_system_->Exists(path, &errno_value)) {
+    const ResponseType result = ErrnoToResponseType(errno_value);
+    LOGW("File does not exist: path = %s, error = %s", path.c_str(),
+         ResponseTypeToString(result));
+    return result;
   }
 
   const ssize_t file_size = file_system_->FileSize(path);