POIVisioFuzzer.java

// Copyright 2023 Google LLC
//
// 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.
//
////////////////////////////////////////////////////////////////////////////////

package org.apache.poi;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.BufferUnderflowException;
import java.util.NoSuchElementException;

import org.apache.commons.io.output.NullOutputStream;
import org.apache.poi.hdgf.extractor.VisioTextExtractor;
import org.apache.poi.ooxml.POIXMLException;
import org.apache.poi.openxml4j.exceptions.OpenXML4JRuntimeException;
import org.apache.poi.util.RecordFormatException;
import org.apache.poi.xdgf.usermodel.XmlVisioDocument;

public class POIVisioFuzzer {
	public static void fuzzerInitialize() {
		POIFuzzer.adjustLimits();
	}

	public static void fuzzerTestOneInput(byte[] input) {
		try (XmlVisioDocument visio = new XmlVisioDocument(new ByteArrayInputStream(input))) {
			visio.write(NullOutputStream.INSTANCE);
		} catch (IOException | POIXMLException |
				 BufferUnderflowException | RecordFormatException | OpenXML4JRuntimeException |
				 IllegalArgumentException | IndexOutOfBoundsException | IllegalStateException e) {
			// expected here
		}

		try (VisioTextExtractor extractor = new VisioTextExtractor(new ByteArrayInputStream(input))) {
			POIFuzzer.checkExtractor(extractor);
		} catch (IOException | POIXMLException | IllegalArgumentException | BufferUnderflowException |
				 RecordFormatException | IndexOutOfBoundsException | ArithmeticException | IllegalStateException |
				 NoSuchElementException e) {
			// expected
		}
	}
}