mirror of https://github.com/google/oss-fuzz.git
119 lines
4.3 KiB
Java
119 lines
4.3 KiB
Java
// Copyright 2023 Google LLC
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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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import com.code_intelligence.jazzer.api.FuzzedDataProvider;
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import org.jxls.common.Context;
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import org.jxls.common.JxlsException;
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import org.jxls.util.CannotOpenWorkbookException;
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import org.jxls.util.JxlsHelper;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.apache.poi.ss.usermodel.Cell;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.xssf.usermodel.XSSFSheet;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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import org.apache.poi.ss.usermodel.Comment;
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import org.apache.poi.ss.usermodel.RichTextString;
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import org.apache.poi.ss.usermodel.ClientAnchor;
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import org.apache.poi.ss.usermodel.CreationHelper;
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import org.apache.poi.ss.usermodel.Drawing;
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import java.io.*;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.*;
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public class ProcessTemplateFuzzer {
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private static Path templatePath;
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public static void fuzzerInitialize() throws IOException {
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templatePath = new File("/out/template.xlsx").toPath();
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templatePath.toFile().createNewFile();
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}
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private static Map<String, Object> generateHashMap(FuzzedDataProvider data) {
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Map<String, Object> model = new HashMap<String, Object>();
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for (int i = 0; i <= data.consumeInt(0, 10); i++) {
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model.put(data.consumeString(50), data.consumeBytes(200));
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}
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return model;
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}
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public static Comment generateComment(XSSFSheet sheet, CreationHelper factory, FuzzedDataProvider data) {
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ClientAnchor anchor = factory.createClientAnchor();
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Drawing drawing = sheet.createDrawingPatriarch();
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Comment comment = drawing.createCellComment(anchor);
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comment.setString(factory.createRichTextString(data.consumeString(200)));
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comment.setAuthor(data.consumeString(100));
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return comment;
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}
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public static Path createDocument(FuzzedDataProvider data) throws IOException {
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XSSFWorkbook workbook = new XSSFWorkbook();
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XSSFSheet sheet = workbook.createSheet(data.consumeString(50));
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CreationHelper factory = workbook.getCreationHelper();
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for (int i = 0; i < data.consumeInt(0, 50); i++) {
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Row row = sheet.createRow(i);
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for (int j = 0; j < data.consumeInt(0, 50); j++) {
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Cell cell = row.createCell(j);
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cell.setCellValue(data.consumeString(200));
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if (data.consumeBoolean()) {
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cell.setCellComment(ProcessTemplateFuzzer.generateComment(sheet, factory, data));
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}
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}
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}
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FileOutputStream out = new FileOutputStream(templatePath.toFile());
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workbook.write(out);
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out.close();
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return templatePath;
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}
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public static void fuzzerTestOneInput(FuzzedDataProvider data) {
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Path templatePath = null;
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try {
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templatePath = ProcessTemplateFuzzer.createDocument(data);
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} catch (IOException | IllegalArgumentException e) {
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return;
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}
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Context context = new Context(ProcessTemplateFuzzer.generateHashMap(data));
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OutputStream os = new ByteArrayOutputStream();
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InputStream in = null;
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try {
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in = Files.newInputStream(templatePath.toFile().toPath());
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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try {
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if (data.consumeBoolean()) {
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JxlsHelper.getInstance().processTemplate(in, os, context);
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} else {
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JxlsHelper.getInstance().processGridTemplateAtCell(
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in,
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os,
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context,
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data.consumeString(50),
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data.consumeString(50)
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);
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}
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} catch (IOException | JxlsException e) {}
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}
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}
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