51 lines
1.7 KiB
Java
51 lines
1.7 KiB
Java
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/*
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* Copyright 2021 Paul Schaub.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.pgpainless.decryption_verification;
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import java.io.IOException;
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import java.io.InputStream;
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import javax.annotation.Nonnull;
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public abstract class CloseForResultInputStream extends InputStream {
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protected final OpenPgpMetadata.Builder resultBuilder;
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private boolean isClosed = false;
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public CloseForResultInputStream(@Nonnull OpenPgpMetadata.Builder resultBuilder) {
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this.resultBuilder = resultBuilder;
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}
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@Override
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public void close() throws IOException {
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this.isClosed = true;
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}
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/**
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* Return the result of the decryption.
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* The result contains metadata about the decryption, such as signatures, used keys and algorithms, as well as information
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* about the decrypted file/stream.
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*
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* Can only be obtained once the stream got successfully closed ({@link #close()}).
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* @return metadata
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*/
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public OpenPgpMetadata getResult() {
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if (!isClosed) {
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throw new IllegalStateException("Stream MUST be closed before the result can be accessed.");
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}
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return resultBuilder.build();
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}
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}
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