Add files using upload-large-folder tool

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/COMPRESS-477/split_zip_created_by_winrar/file_to_compare_1

@@ -0,0 +1,1297 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.commons.compress.archivers.zip;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PushbackInputStream;
+import java.math.BigInteger;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.zip.CRC32;
+import java.util.zip.DataFormatException;
+import java.util.zip.Inflater;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipException;
+
+import org.apache.commons.compress.archivers.ArchiveEntry;
+import org.apache.commons.compress.archivers.ArchiveInputStream;
+import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
+import org.apache.commons.compress.compressors.deflate64.Deflate64CompressorInputStream;
+import org.apache.commons.compress.utils.ArchiveUtils;
+import org.apache.commons.compress.utils.IOUtils;
+import org.apache.commons.compress.utils.InputStreamStatistics;
+
+import static org.apache.commons.compress.archivers.zip.ZipConstants.DWORD;
+import static org.apache.commons.compress.archivers.zip.ZipConstants.SHORT;
+import static org.apache.commons.compress.archivers.zip.ZipConstants.WORD;
+import static org.apache.commons.compress.archivers.zip.ZipConstants.ZIP64_MAGIC;
+
+/**
+ * Implements an input stream that can read Zip archives.
+ *
+ * <p>As of Apache Commons Compress it transparently supports Zip64
+ * extensions and thus individual entries and archives larger than 4
+ * GB or with more than 65536 entries.</p>
+ *
+ * <p>The {@link ZipFile} class is preferred when reading from files
+ * as {@link ZipArchiveInputStream} is limited by not being able to
+ * read the central directory header before returning entries.  In
+ * particular {@link ZipArchiveInputStream}</p>
+ *
+ * <ul>
+ *
+ *  <li>may return entries that are not part of the central directory
+ *  at all and shouldn't be considered part of the archive.</li>
+ *
+ *  <li>may return several entries with the same name.</li>
+ *
+ *  <li>will not return internal or external attributes.</li>
+ *
+ *  <li>may return incomplete extra field data.</li>
+ *
+ *  <li>may return unknown sizes and CRC values for entries until the
+ *  next entry has been reached if the archive uses the data
+ *  descriptor feature.</li>
+ *
+ * </ul>
+ *
+ * @see ZipFile
+ * @NotThreadSafe
+ */
+public class ZipArchiveInputStream extends ArchiveInputStream implements InputStreamStatistics {
+
+    /** The zip encoding to use for file names and the file comment. */
+    private final ZipEncoding zipEncoding;
+
+    // the provided encoding (for unit tests)
+    final String encoding;
+
+    /** Whether to look for and use Unicode extra fields. */
+    private final boolean useUnicodeExtraFields;
+
+    /** Wrapped stream, will always be a PushbackInputStream. */
+    private final InputStream in;
+
+    /** Inflater used for all deflated entries. */
+    private final Inflater inf = new Inflater(true);
+
+    /** Buffer used to read from the wrapped stream. */
+    private final ByteBuffer buf = ByteBuffer.allocate(ZipArchiveOutputStream.BUFFER_SIZE);
+
+    /** The entry that is currently being read. */
+    private CurrentEntry current = null;
+
+    /** Whether the stream has been closed. */
+    private boolean closed = false;
+
+    /** Whether the stream has reached the central directory - and thus found all entries. */
+    private boolean hitCentralDirectory = false;
+
+    /**
+     * When reading a stored entry that uses the data descriptor this
+     * stream has to read the full entry and caches it.  This is the
+     * cache.
+     */
+    private ByteArrayInputStream lastStoredEntry = null;
+
+    /** Whether the stream will try to read STORED entries that use a data descriptor. */
+    private boolean allowStoredEntriesWithDataDescriptor = false;
+
+    /** Count decompressed bytes for current entry */
+    private long uncompressedCount = 0;
+
+    private static final int LFH_LEN = 30;
+    /*
+      local file header signature     WORD
+      version needed to extract       SHORT
+      general purpose bit flag        SHORT
+      compression method              SHORT
+      last mod file time              SHORT
+      last mod file date              SHORT
+      crc-32                          WORD
+      compressed size                 WORD
+      uncompressed size               WORD
+      file name length                SHORT
+      extra field length              SHORT
+    */
+
+    private static final int CFH_LEN = 46;
+    /*
+        central file header signature   WORD
+        version made by                 SHORT
+        version needed to extract       SHORT
+        general purpose bit flag        SHORT
+        compression method              SHORT
+        last mod file time              SHORT
+        last mod file date              SHORT
+        crc-32                          WORD
+        compressed size                 WORD
+        uncompressed size               WORD
+        file name length                SHORT
+        extra field length              SHORT
+        file comment length             SHORT
+        disk number start               SHORT
+        internal file attributes        SHORT
+        external file attributes        WORD
+        relative offset of local header WORD
+    */
+
+    private static final long TWO_EXP_32 = ZIP64_MAGIC + 1;
+
+    // cached buffers - must only be used locally in the class (COMPRESS-172 - reduce garbage collection)
+    private final byte[] lfhBuf = new byte[LFH_LEN];
+    private final byte[] skipBuf = new byte[1024];
+    private final byte[] shortBuf = new byte[SHORT];
+    private final byte[] wordBuf = new byte[WORD];
+    private final byte[] twoDwordBuf = new byte[2 * DWORD];
+
+    private int entriesRead = 0;
+
+    /**
+     * Create an instance using UTF-8 encoding
+     * @param inputStream the stream to wrap
+     */
+    public ZipArchiveInputStream(final InputStream inputStream) {
+        this(inputStream, ZipEncodingHelper.UTF8);
+    }
+
+    /**
+     * Create an instance using the specified encoding
+     * @param inputStream the stream to wrap
+     * @param encoding the encoding to use for file names, use null
+     * for the platform's default encoding
+     * @since 1.5
+     */
+    public ZipArchiveInputStream(final InputStream inputStream, final String encoding) {
+        this(inputStream, encoding, true);
+    }
+
+    /**
+     * Create an instance using the specified encoding
+     * @param inputStream the stream to wrap
+     * @param encoding the encoding to use for file names, use null
+     * for the platform's default encoding
+     * @param useUnicodeExtraFields whether to use InfoZIP Unicode
+     * Extra Fields (if present) to set the file names.
+     */
+    public ZipArchiveInputStream(final InputStream inputStream, final String encoding, final boolean useUnicodeExtraFields) {
+        this(inputStream, encoding, useUnicodeExtraFields, false);
+    }
+
+    /**
+     * Create an instance using the specified encoding
+     * @param inputStream the stream to wrap
+     * @param encoding the encoding to use for file names, use null
+     * for the platform's default encoding
+     * @param useUnicodeExtraFields whether to use InfoZIP Unicode
+     * Extra Fields (if present) to set the file names.
+     * @param allowStoredEntriesWithDataDescriptor whether the stream
+     * will try to read STORED entries that use a data descriptor
+     * @since 1.1
+     */
+    public ZipArchiveInputStream(final InputStream inputStream,
+                                 final String encoding,
+                                 final boolean useUnicodeExtraFields,
+                                 final boolean allowStoredEntriesWithDataDescriptor) {
+        this.encoding = encoding;
+        zipEncoding = ZipEncodingHelper.getZipEncoding(encoding);
+        this.useUnicodeExtraFields = useUnicodeExtraFields;
+        in = new PushbackInputStream(inputStream, buf.capacity());
+        this.allowStoredEntriesWithDataDescriptor =
+            allowStoredEntriesWithDataDescriptor;
+        // haven't read anything so far
+        buf.limit(0);
+    }
+
+    public ZipArchiveEntry getNextZipEntry() throws IOException {
+        uncompressedCount = 0;
+
+        boolean firstEntry = true;
+        if (closed || hitCentralDirectory) {
+            return null;
+        }
+        if (current != null) {
+            closeEntry();
+            firstEntry = false;
+        }
+
+        long currentHeaderOffset = getBytesRead();
+        try {
+            if (firstEntry) {
+                // split archives have a special signature before the
+                // first local file header - look for it and fail with
+                // the appropriate error message if this is a split
+                // archive.
+                readFirstLocalFileHeader(lfhBuf);
+            } else {
+                readFully(lfhBuf);
+            }
+        } catch (final EOFException e) { //NOSONAR
+            return null;
+        }
+
+        final ZipLong sig = new ZipLong(lfhBuf);
+        if (!sig.equals(ZipLong.LFH_SIG)) {
+            if (sig.equals(ZipLong.CFH_SIG) || sig.equals(ZipLong.AED_SIG) || isApkSigningBlock(lfhBuf)) {
+                hitCentralDirectory = true;
+                skipRemainderOfArchive();
+                return null;
+            }
+            throw new ZipException(String.format("Unexpected record signature: 0X%X", sig.getValue()));
+        }
+
+        int off = WORD;
+        current = new CurrentEntry();
+
+        final int versionMadeBy = ZipShort.getValue(lfhBuf, off);
+        off += SHORT;
+        current.entry.setPlatform((versionMadeBy >> ZipFile.BYTE_SHIFT) & ZipFile.NIBLET_MASK);
+
+        final GeneralPurposeBit gpFlag = GeneralPurposeBit.parse(lfhBuf, off);
+        final boolean hasUTF8Flag = gpFlag.usesUTF8ForNames();
+        final ZipEncoding entryEncoding = hasUTF8Flag ? ZipEncodingHelper.UTF8_ZIP_ENCODING : zipEncoding;
+        current.hasDataDescriptor = gpFlag.usesDataDescriptor();
+        current.entry.setGeneralPurposeBit(gpFlag);
+
+        off += SHORT;
+
+        current.entry.setMethod(ZipShort.getValue(lfhBuf, off));
+        off += SHORT;
+
+        final long time = ZipUtil.dosToJavaTime(ZipLong.getValue(lfhBuf, off));
+        current.entry.setTime(time);
+        off += WORD;
+
+        ZipLong size = null, cSize = null;
+        if (!current.hasDataDescriptor) {
+            current.entry.setCrc(ZipLong.getValue(lfhBuf, off));
+            off += WORD;
+
+            cSize = new ZipLong(lfhBuf, off);
+            off += WORD;
+
+            size = new ZipLong(lfhBuf, off);
+            off += WORD;
+        } else {
+            off += 3 * WORD;
+        }
+
+        final int fileNameLen = ZipShort.getValue(lfhBuf, off);
+
+        off += SHORT;
+
+        final int extraLen = ZipShort.getValue(lfhBuf, off);
+        off += SHORT; // NOSONAR - assignment as documentation
+
+        final byte[] fileName = new byte[fileNameLen];
+        readFully(fileName);
+        current.entry.setName(entryEncoding.decode(fileName), fileName);
+        if (hasUTF8Flag) {
+            current.entry.setNameSource(ZipArchiveEntry.NameSource.NAME_WITH_EFS_FLAG);
+        }
+
+        final byte[] extraData = new byte[extraLen];
+        readFully(extraData);
+        current.entry.setExtra(extraData);
+
+        if (!hasUTF8Flag && useUnicodeExtraFields) {
+            ZipUtil.setNameAndCommentFromExtraFields(current.entry, fileName, null);
+        }
+
+        processZip64Extra(size, cSize);
+
+        current.entry.setLocalHeaderOffset(currentHeaderOffset);
+        current.entry.setDataOffset(getBytesRead());
+        current.entry.setStreamContiguous(true);
+
+        ZipMethod m = ZipMethod.getMethodByCode(current.entry.getMethod());
+        if (current.entry.getCompressedSize() != ArchiveEntry.SIZE_UNKNOWN) {
+            if (ZipUtil.canHandleEntryData(current.entry) && m != ZipMethod.STORED && m != ZipMethod.DEFLATED) {
+                InputStream bis = new BoundedInputStream(in, current.entry.getCompressedSize());
+                switch (m) {
+                case UNSHRINKING:
+                    current.in = new UnshrinkingInputStream(bis);
+                    break;
+                case IMPLODING:
+                    current.in = new ExplodingInputStream(
+                        current.entry.getGeneralPurposeBit().getSlidingDictionarySize(),
+                        current.entry.getGeneralPurposeBit().getNumberOfShannonFanoTrees(),
+                        bis);
+                    break;
+                case BZIP2:
+                    current.in = new BZip2CompressorInputStream(bis);
+                    break;
+                case ENHANCED_DEFLATED:
+                    current.in = new Deflate64CompressorInputStream(bis);
+                    break;
+                default:
+                    // we should never get here as all supported methods have been covered
+                    // will cause an error when read is invoked, don't throw an exception here so people can
+                    // skip unsupported entries
+                    break;
+                }
+            }
+        } else if (m == ZipMethod.ENHANCED_DEFLATED) {
+            current.in = new Deflate64CompressorInputStream(in);
+        }
+
+        entriesRead++;
+        return current.entry;
+    }
+
+    /**
+     * Fills the given array with the first local file header and
+     * deals with splitting/spanning markers that may prefix the first
+     * LFH.
+     */
+    private void readFirstLocalFileHeader(final byte[] lfh) throws IOException {
+        readFully(lfh);
+        final ZipLong sig = new ZipLong(lfh);
+        if (sig.equals(ZipLong.DD_SIG)) {
+            throw new UnsupportedZipFeatureException(UnsupportedZipFeatureException.Feature.SPLITTING);
+        }
+
+        if (sig.equals(ZipLong.SINGLE_SEGMENT_SPLIT_MARKER)) {
+            // The archive is not really split as only one segment was
+            // needed in the end.  Just skip over the marker.
+            final byte[] missedLfhBytes = new byte[4];
+            readFully(missedLfhBytes);
+            System.arraycopy(lfh, 4, lfh, 0, LFH_LEN - 4);
+            System.arraycopy(missedLfhBytes, 0, lfh, LFH_LEN - 4, 4);
+        }
+    }
+
+    /**
+     * Records whether a Zip64 extra is present and sets the size
+     * information from it if sizes are 0xFFFFFFFF and the entry
+     * doesn't use a data descriptor.
+     */
+    private void processZip64Extra(final ZipLong size, final ZipLong cSize) {
+        final Zip64ExtendedInformationExtraField z64 =
+            (Zip64ExtendedInformationExtraField)
+            current.entry.getExtraField(Zip64ExtendedInformationExtraField.HEADER_ID);
+        current.usesZip64 = z64 != null;
+        if (!current.hasDataDescriptor) {
+            if (z64 != null // same as current.usesZip64 but avoids NPE warning
+                    && (ZipLong.ZIP64_MAGIC.equals(cSize) || ZipLong.ZIP64_MAGIC.equals(size)) ) {
+                current.entry.setCompressedSize(z64.getCompressedSize().getLongValue());
+                current.entry.setSize(z64.getSize().getLongValue());
+            } else if (cSize != null && size != null) {
+                current.entry.setCompressedSize(cSize.getValue());
+                current.entry.setSize(size.getValue());
+            }
+        }
+    }
+
+    @Override
+    public ArchiveEntry getNextEntry() throws IOException {
+        return getNextZipEntry();
+    }
+
+    /**
+     * Whether this class is able to read the given entry.
+     *
+     * <p>May return false if it is set up to use encryption or a
+     * compression method that hasn't been implemented yet.</p>
+     * @since 1.1
+     */
+    @Override
+    public boolean canReadEntryData(final ArchiveEntry ae) {
+        if (ae instanceof ZipArchiveEntry) {
+            final ZipArchiveEntry ze = (ZipArchiveEntry) ae;
+            return ZipUtil.canHandleEntryData(ze)
+                && supportsDataDescriptorFor(ze)
+                && supportsCompressedSizeFor(ze);
+        }
+        return false;
+    }
+
+    @Override
+    public int read(final byte[] buffer, final int offset, final int length) throws IOException {
+        if (length == 0) {
+            return 0;
+        }
+        if (closed) {
+            throw new IOException("The stream is closed");
+        }
+
+        if (current == null) {
+            return -1;
+        }
+
+        // avoid int overflow, check null buffer
+        if (offset > buffer.length || length < 0 || offset < 0 || buffer.length - offset < length) {
+            throw new ArrayIndexOutOfBoundsException();
+        }
+
+        ZipUtil.checkRequestedFeatures(current.entry);
+        if (!supportsDataDescriptorFor(current.entry)) {
+            throw new UnsupportedZipFeatureException(UnsupportedZipFeatureException.Feature.DATA_DESCRIPTOR,
+                    current.entry);
+        }
+        if (!supportsCompressedSizeFor(current.entry)) {
+            throw new UnsupportedZipFeatureException(UnsupportedZipFeatureException.Feature.UNKNOWN_COMPRESSED_SIZE,
+                    current.entry);
+        }
+
+        int read;
+        if (current.entry.getMethod() == ZipArchiveOutputStream.STORED) {
+            read = readStored(buffer, offset, length);
+        } else if (current.entry.getMethod() == ZipArchiveOutputStream.DEFLATED) {
+            read = readDeflated(buffer, offset, length);
+        } else if (current.entry.getMethod() == ZipMethod.UNSHRINKING.getCode()
+                || current.entry.getMethod() == ZipMethod.IMPLODING.getCode()
+                || current.entry.getMethod() == ZipMethod.ENHANCED_DEFLATED.getCode()
+                || current.entry.getMethod() == ZipMethod.BZIP2.getCode()) {
+            read = current.in.read(buffer, offset, length);
+        } else {
+            throw new UnsupportedZipFeatureException(ZipMethod.getMethodByCode(current.entry.getMethod()),
+                    current.entry);
+        }
+
+        if (read >= 0) {
+            current.crc.update(buffer, offset, read);
+            uncompressedCount += read;
+        }
+
+        return read;
+    }
+
+    /**
+     * @since 1.17
+     */
+    @Override
+    public long getCompressedCount() {
+        if (current.entry.getMethod() == ZipArchiveOutputStream.STORED) {
+            return current.bytesRead;
+        } else if (current.entry.getMethod() == ZipArchiveOutputStream.DEFLATED) {
+            return getBytesInflated();
+        } else if (current.entry.getMethod() == ZipMethod.UNSHRINKING.getCode()) {
+            return ((UnshrinkingInputStream) current.in).getCompressedCount();
+        } else if (current.entry.getMethod() == ZipMethod.IMPLODING.getCode()) {
+            return ((ExplodingInputStream) current.in).getCompressedCount();
+        } else if (current.entry.getMethod() == ZipMethod.ENHANCED_DEFLATED.getCode()) {
+            return ((Deflate64CompressorInputStream) current.in).getCompressedCount();
+        } else if (current.entry.getMethod() == ZipMethod.BZIP2.getCode()) {
+            return ((BZip2CompressorInputStream) current.in).getCompressedCount();
+        } else {
+            return -1;
+        }
+    }
+
+    /**
+     * @since 1.17
+     */
+    @Override
+    public long getUncompressedCount() {
+        return uncompressedCount;
+    }
+
+    /**
+     * Implementation of read for STORED entries.
+     */
+    private int readStored(final byte[] buffer, final int offset, final int length) throws IOException {
+
+        if (current.hasDataDescriptor) {
+            if (lastStoredEntry == null) {
+                readStoredEntry();
+            }
+            return lastStoredEntry.read(buffer, offset, length);
+        }
+
+        final long csize = current.entry.getSize();
+        if (current.bytesRead >= csize) {
+            return -1;
+        }
+
+        if (buf.position() >= buf.limit()) {
+            buf.position(0);
+            final int l = in.read(buf.array());
+            if (l == -1) {
+                buf.limit(0);
+                throw new IOException("Truncated ZIP file");
+            }
+            buf.limit(l);
+
+            count(l);
+            current.bytesReadFromStream += l;
+        }
+
+        int toRead = Math.min(buf.remaining(), length);
+        if ((csize - current.bytesRead) < toRead) {
+            // if it is smaller than toRead then it fits into an int
+            toRead = (int) (csize - current.bytesRead);
+        }
+        buf.get(buffer, offset, toRead);
+        current.bytesRead += toRead;
+        return toRead;
+    }
+
+    /**
+     * Implementation of read for DEFLATED entries.
+     */
+    private int readDeflated(final byte[] buffer, final int offset, final int length) throws IOException {
+        final int read = readFromInflater(buffer, offset, length);
+        if (read <= 0) {
+            if (inf.finished()) {
+                return -1;
+            } else if (inf.needsDictionary()) {
+                throw new ZipException("This archive needs a preset dictionary"
+                                       + " which is not supported by Commons"
+                                       + " Compress.");
+            } else if (read == -1) {
+                throw new IOException("Truncated ZIP file");
+            }
+        }
+        return read;
+    }
+
+    /**
+     * Potentially reads more bytes to fill the inflater's buffer and
+     * reads from it.
+     */
+    private int readFromInflater(final byte[] buffer, final int offset, final int length) throws IOException {
+        int read = 0;
+        do {
+            if (inf.needsInput()) {
+                final int l = fill();
+                if (l > 0) {
+                    current.bytesReadFromStream += buf.limit();
+                } else if (l == -1) {
+                    return -1;
+                } else {
+                    break;
+                }
+            }
+            try {
+                read = inf.inflate(buffer, offset, length);
+            } catch (final DataFormatException e) {
+                throw (IOException) new ZipException(e.getMessage()).initCause(e);
+            }
+        } while (read == 0 && inf.needsInput());
+        return read;
+    }
+
+    @Override
+    public void close() throws IOException {
+        if (!closed) {
+            closed = true;
+            try {
+                in.close();
+            } finally {
+                inf.end();
+            }
+        }
+    }
+
+    /**
+     * Skips over and discards value bytes of data from this input
+     * stream.
+     *
+     * <p>This implementation may end up skipping over some smaller
+     * number of bytes, possibly 0, if and only if it reaches the end
+     * of the underlying stream.</p>
+     *
+     * <p>The actual number of bytes skipped is returned.</p>
+     *
+     * @param value the number of bytes to be skipped.
+     * @return the actual number of bytes skipped.
+     * @throws IOException - if an I/O error occurs.
+     * @throws IllegalArgumentException - if value is negative.
+     */
+    @Override
+    public long skip(final long value) throws IOException {
+        if (value >= 0) {
+            long skipped = 0;
+            while (skipped < value) {
+                final long rem = value - skipped;
+                final int x = read(skipBuf, 0, (int) (skipBuf.length > rem ? rem : skipBuf.length));
+                if (x == -1) {
+                    return skipped;
+                }
+                skipped += x;
+            }
+            return skipped;
+        }
+        throw new IllegalArgumentException();
+    }
+
+    /**
+     * Checks if the signature matches what is expected for a zip file.
+     * Does not currently handle self-extracting zips which may have arbitrary
+     * leading content.
+     *
+     * @param signature the bytes to check
+     * @param length    the number of bytes to check
+     * @return true, if this stream is a zip archive stream, false otherwise
+     */
+    public static boolean matches(final byte[] signature, final int length) {
+        if (length < ZipArchiveOutputStream.LFH_SIG.length) {
+            return false;
+        }
+
+        return checksig(signature, ZipArchiveOutputStream.LFH_SIG) // normal file
+            || checksig(signature, ZipArchiveOutputStream.EOCD_SIG) // empty zip
+            || checksig(signature, ZipArchiveOutputStream.DD_SIG) // split zip
+            || checksig(signature, ZipLong.SINGLE_SEGMENT_SPLIT_MARKER.getBytes());
+    }
+
+    private static boolean checksig(final byte[] signature, final byte[] expected) {
+        for (int i = 0; i < expected.length; i++) {
+            if (signature[i] != expected[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Closes the current ZIP archive entry and positions the underlying
+     * stream to the beginning of the next entry. All per-entry variables
+     * and data structures are cleared.
+     * <p>
+     * If the compressed size of this entry is included in the entry header,
+     * then any outstanding bytes are simply skipped from the underlying
+     * stream without uncompressing them. This allows an entry to be safely
+     * closed even if the compression method is unsupported.
+     * <p>
+     * In case we don't know the compressed size of this entry or have
+     * already buffered too much data from the underlying stream to support
+     * uncompression, then the uncompression process is completed and the
+     * end position of the stream is adjusted based on the result of that
+     * process.
+     *
+     * @throws IOException if an error occurs
+     */
+    private void closeEntry() throws IOException {
+        if (closed) {
+            throw new IOException("The stream is closed");
+        }
+        if (current == null) {
+            return;
+        }
+
+        // Ensure all entry bytes are read
+        if (currentEntryHasOutstandingBytes()) {
+            drainCurrentEntryData();
+        } else {
+            // this is guaranteed to exhaust the stream
+            skip(Long.MAX_VALUE); //NOSONAR
+
+            final long inB = current.entry.getMethod() == ZipArchiveOutputStream.DEFLATED
+                       ? getBytesInflated() : current.bytesRead;
+
+            // this is at most a single read() operation and can't
+            // exceed the range of int
+            final int diff = (int) (current.bytesReadFromStream - inB);
+
+            // Pushback any required bytes
+            if (diff > 0) {
+                pushback(buf.array(), buf.limit() - diff, diff);
+                current.bytesReadFromStream -= diff;
+            }
+
+            // Drain remainder of entry if not all data bytes were required
+            if (currentEntryHasOutstandingBytes()) {
+                drainCurrentEntryData();
+            }
+        }
+
+        if (lastStoredEntry == null && current.hasDataDescriptor) {
+            readDataDescriptor();
+        }
+
+        inf.reset();
+        buf.clear().flip();
+        current = null;
+        lastStoredEntry = null;
+    }
+
+    /**
+     * If the compressed size of the current entry is included in the entry header
+     * and there are any outstanding bytes in the underlying stream, then
+     * this returns true.
+     *
+     * @return true, if current entry is determined to have outstanding bytes, false otherwise
+     */
+    private boolean currentEntryHasOutstandingBytes() {
+        return current.bytesReadFromStream <= current.entry.getCompressedSize()
+                && !current.hasDataDescriptor;
+    }
+
+    /**
+     * Read all data of the current entry from the underlying stream
+     * that hasn't been read, yet.
+     */
+    private void drainCurrentEntryData() throws IOException {
+        long remaining = current.entry.getCompressedSize() - current.bytesReadFromStream;
+        while (remaining > 0) {
+            final long n = in.read(buf.array(), 0, (int) Math.min(buf.capacity(), remaining));
+            if (n < 0) {
+                throw new EOFException("Truncated ZIP entry: "
+                                       + ArchiveUtils.sanitize(current.entry.getName()));
+            }
+            count(n);
+            remaining -= n;
+        }
+    }
+
+    /**
+     * Get the number of bytes Inflater has actually processed.
+     *
+     * <p>for Java &lt; Java7 the getBytes* methods in
+     * Inflater/Deflater seem to return unsigned ints rather than
+     * longs that start over with 0 at 2^32.</p>
+     *
+     * <p>The stream knows how many bytes it has read, but not how
+     * many the Inflater actually consumed - it should be between the
+     * total number of bytes read for the entry and the total number
+     * minus the last read operation.  Here we just try to make the
+     * value close enough to the bytes we've read by assuming the
+     * number of bytes consumed must be smaller than (or equal to) the
+     * number of bytes read but not smaller by more than 2^32.</p>
+     */
+    private long getBytesInflated() {
+        long inB = inf.getBytesRead();
+        if (current.bytesReadFromStream >= TWO_EXP_32) {
+            while (inB + TWO_EXP_32 <= current.bytesReadFromStream) {
+                inB += TWO_EXP_32;
+            }
+        }
+        return inB;
+    }
+
+    private int fill() throws IOException {
+        if (closed) {
+            throw new IOException("The stream is closed");
+        }
+        final int length = in.read(buf.array());
+        if (length > 0) {
+            buf.limit(length);
+            count(buf.limit());
+            inf.setInput(buf.array(), 0, buf.limit());
+        }
+        return length;
+    }
+
+    private void readFully(final byte[] b) throws IOException {
+        readFully(b, 0);
+    }
+
+    private void readFully(final byte[] b, final int off) throws IOException {
+        final int len = b.length - off;
+        final int count = IOUtils.readFully(in, b, off, len);
+        count(count);
+        if (count < len) {
+            throw new EOFException();
+        }
+    }
+
+    private void readDataDescriptor() throws IOException {
+        readFully(wordBuf);
+        ZipLong val = new ZipLong(wordBuf);
+        if (ZipLong.DD_SIG.equals(val)) {
+            // data descriptor with signature, skip sig
+            readFully(wordBuf);
+            val = new ZipLong(wordBuf);
+        }
+        current.entry.setCrc(val.getValue());
+
+        // if there is a ZIP64 extra field, sizes are eight bytes
+        // each, otherwise four bytes each.  Unfortunately some
+        // implementations - namely Java7 - use eight bytes without
+        // using a ZIP64 extra field -
+        // https://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7073588
+
+        // just read 16 bytes and check whether bytes nine to twelve
+        // look like one of the signatures of what could follow a data
+        // descriptor (ignoring archive decryption headers for now).
+        // If so, push back eight bytes and assume sizes are four
+        // bytes, otherwise sizes are eight bytes each.
+        readFully(twoDwordBuf);
+        final ZipLong potentialSig = new ZipLong(twoDwordBuf, DWORD);
+        if (potentialSig.equals(ZipLong.CFH_SIG) || potentialSig.equals(ZipLong.LFH_SIG)) {
+            pushback(twoDwordBuf, DWORD, DWORD);
+            current.entry.setCompressedSize(ZipLong.getValue(twoDwordBuf));
+            current.entry.setSize(ZipLong.getValue(twoDwordBuf, WORD));
+        } else {
+            current.entry.setCompressedSize(ZipEightByteInteger.getLongValue(twoDwordBuf));
+            current.entry.setSize(ZipEightByteInteger.getLongValue(twoDwordBuf, DWORD));
+        }
+    }
+
+    /**
+     * Whether this entry requires a data descriptor this library can work with.
+     *
+     * @return true if allowStoredEntriesWithDataDescriptor is true,
+     * the entry doesn't require any data descriptor or the method is
+     * DEFLATED or ENHANCED_DEFLATED.
+     */
+    private boolean supportsDataDescriptorFor(final ZipArchiveEntry entry) {
+        return !entry.getGeneralPurposeBit().usesDataDescriptor()
+
+                || (allowStoredEntriesWithDataDescriptor && entry.getMethod() == ZipEntry.STORED)
+                || entry.getMethod() == ZipEntry.DEFLATED
+                || entry.getMethod() == ZipMethod.ENHANCED_DEFLATED.getCode();
+    }
+
+    /**
+     * Whether the compressed size for the entry is either known or
+     * not required by the compression method being used.
+     */
+    private boolean supportsCompressedSizeFor(final ZipArchiveEntry entry) {
+        return entry.getCompressedSize() != ArchiveEntry.SIZE_UNKNOWN
+            || entry.getMethod() == ZipEntry.DEFLATED
+            || entry.getMethod() == ZipMethod.ENHANCED_DEFLATED.getCode()
+            || (entry.getGeneralPurposeBit().usesDataDescriptor()
+                && allowStoredEntriesWithDataDescriptor
+                && entry.getMethod() == ZipEntry.STORED);
+    }
+
+    private static final String USE_ZIPFILE_INSTEAD_OF_STREAM_DISCLAIMER =
+        " while reading a stored entry using data descriptor. Either the archive is broken"
+        + " or it can not be read using ZipArchiveInputStream and you must use ZipFile."
+        + " A common cause for this is a ZIP archive containing a ZIP archive."
+        + " See http://commons.apache.org/proper/commons-compress/zip.html#ZipArchiveInputStream_vs_ZipFile";
+
+    /**
+     * Caches a stored entry that uses the data descriptor.
+     *
+     * <ul>
+     *   <li>Reads a stored entry until the signature of a local file
+     *     header, central directory header or data descriptor has been
+     *     found.</li>
+     *   <li>Stores all entry data in lastStoredEntry.</p>
+     *   <li>Rewinds the stream to position at the data
+     *     descriptor.</li>
+     *   <li>reads the data descriptor</li>
+     * </ul>
+     *
+     * <p>After calling this method the entry should know its size,
+     * the entry's data is cached and the stream is positioned at the
+     * next local file or central directory header.</p>
+     */
+    private void readStoredEntry() throws IOException {
+        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        int off = 0;
+        boolean done = false;
+
+        // length of DD without signature
+        final int ddLen = current.usesZip64 ? WORD + 2 * DWORD : 3 * WORD;
+
+        while (!done) {
+            final int r = in.read(buf.array(), off, ZipArchiveOutputStream.BUFFER_SIZE - off);
+            if (r <= 0) {
+                // read the whole archive without ever finding a
+                // central directory
+                throw new IOException("Truncated ZIP file");
+            }
+            if (r + off < 4) {
+                // buffer too small to check for a signature, loop
+                off += r;
+                continue;
+            }
+
+            done = bufferContainsSignature(bos, off, r, ddLen);
+            if (!done) {
+                off = cacheBytesRead(bos, off, r, ddLen);
+            }
+        }
+        if (current.entry.getCompressedSize() != current.entry.getSize()) {
+            throw new ZipException("compressed and uncompressed size don't match"
+                                   + USE_ZIPFILE_INSTEAD_OF_STREAM_DISCLAIMER);
+        }
+        final byte[] b = bos.toByteArray();
+        if (b.length != current.entry.getSize()) {
+            throw new ZipException("actual and claimed size don't match"
+                                   + USE_ZIPFILE_INSTEAD_OF_STREAM_DISCLAIMER);
+        }
+        lastStoredEntry = new ByteArrayInputStream(b);
+    }
+
+    private static final byte[] LFH = ZipLong.LFH_SIG.getBytes();
+    private static final byte[] CFH = ZipLong.CFH_SIG.getBytes();
+    private static final byte[] DD = ZipLong.DD_SIG.getBytes();
+
+    /**
+     * Checks whether the current buffer contains the signature of a
+     * &quot;data descriptor&quot;, &quot;local file header&quot; or
+     * &quot;central directory entry&quot;.
+     *
+     * <p>If it contains such a signature, reads the data descriptor
+     * and positions the stream right after the data descriptor.</p>
+     */
+    private boolean bufferContainsSignature(final ByteArrayOutputStream bos, final int offset, final int lastRead, final int expectedDDLen)
+            throws IOException {
+
+        boolean done = false;
+        for (int i = 0; !done && i < offset + lastRead - 4; i++) {
+            if (buf.array()[i] == LFH[0] && buf.array()[i + 1] == LFH[1]) {
+                int expectDDPos = i;
+                if (i >= expectedDDLen &&
+                    (buf.array()[i + 2] == LFH[2] && buf.array()[i + 3] == LFH[3])
+                    || (buf.array()[i] == CFH[2] && buf.array()[i + 3] == CFH[3])) {
+                    // found a LFH or CFH:
+                    expectDDPos = i - expectedDDLen;
+                    done = true;
+                }
+                else if (buf.array()[i + 2] == DD[2] && buf.array()[i + 3] == DD[3]) {
+                    // found DD:
+                    done = true;
+                }
+                if (done) {
+                    // * push back bytes read in excess as well as the data
+                    //   descriptor
+                    // * copy the remaining bytes to cache
+                    // * read data descriptor
+                    pushback(buf.array(), expectDDPos, offset + lastRead - expectDDPos);
+                    bos.write(buf.array(), 0, expectDDPos);
+                    readDataDescriptor();
+                }
+            }
+        }
+        return done;
+    }
+
+    /**
+     * If the last read bytes could hold a data descriptor and an
+     * incomplete signature then save the last bytes to the front of
+     * the buffer and cache everything in front of the potential data
+     * descriptor into the given ByteArrayOutputStream.
+     *
+     * <p>Data descriptor plus incomplete signature (3 bytes in the
+     * worst case) can be 20 bytes max.</p>
+     */
+    private int cacheBytesRead(final ByteArrayOutputStream bos, int offset, final int lastRead, final int expecteDDLen) {
+        final int cacheable = offset + lastRead - expecteDDLen - 3;
+        if (cacheable > 0) {
+            bos.write(buf.array(), 0, cacheable);
+            System.arraycopy(buf.array(), cacheable, buf.array(), 0, expecteDDLen + 3);
+            offset = expecteDDLen + 3;
+        } else {
+            offset += lastRead;
+        }
+        return offset;
+    }
+
+    private void pushback(final byte[] buf, final int offset, final int length) throws IOException {
+        ((PushbackInputStream) in).unread(buf, offset, length);
+        pushedBackBytes(length);
+    }
+
+    // End of Central Directory Record
+    //   end of central dir signature    WORD
+    //   number of this disk             SHORT
+    //   number of the disk with the
+    //   start of the central directory  SHORT
+    //   total number of entries in the
+    //   central directory on this disk  SHORT
+    //   total number of entries in
+    //   the central directory           SHORT
+    //   size of the central directory   WORD
+    //   offset of start of central
+    //   directory with respect to
+    //   the starting disk number        WORD
+    //   .ZIP file comment length        SHORT
+    //   .ZIP file comment               up to 64KB
+    //
+
+    /**
+     * Reads the stream until it find the "End of central directory
+     * record" and consumes it as well.
+     */
+    private void skipRemainderOfArchive() throws IOException {
+        // skip over central directory. One LFH has been read too much
+        // already.  The calculation discounts file names and extra
+        // data so it will be too short.
+        realSkip((long) entriesRead * CFH_LEN - LFH_LEN);
+        findEocdRecord();
+        realSkip((long) ZipFile.MIN_EOCD_SIZE - WORD /* signature */ - SHORT /* comment len */);
+        readFully(shortBuf);
+        // file comment
+        realSkip(ZipShort.getValue(shortBuf));
+    }
+
+    /**
+     * Reads forward until the signature of the &quot;End of central
+     * directory&quot; record is found.
+     */
+    private void findEocdRecord() throws IOException {
+        int currentByte = -1;
+        boolean skipReadCall = false;
+        while (skipReadCall || (currentByte = readOneByte()) > -1) {
+            skipReadCall = false;
+            if (!isFirstByteOfEocdSig(currentByte)) {
+                continue;
+            }
+            currentByte = readOneByte();
+            if (currentByte != ZipArchiveOutputStream.EOCD_SIG[1]) {
+                if (currentByte == -1) {
+                    break;
+                }
+                skipReadCall = isFirstByteOfEocdSig(currentByte);
+                continue;
+            }
+            currentByte = readOneByte();
+            if (currentByte != ZipArchiveOutputStream.EOCD_SIG[2]) {
+                if (currentByte == -1) {
+                    break;
+                }
+                skipReadCall = isFirstByteOfEocdSig(currentByte);
+                continue;
+            }
+            currentByte = readOneByte();
+            if (currentByte == -1
+                || currentByte == ZipArchiveOutputStream.EOCD_SIG[3]) {
+                break;
+            }
+            skipReadCall = isFirstByteOfEocdSig(currentByte);
+        }
+    }
+
+    /**
+     * Skips bytes by reading from the underlying stream rather than
+     * the (potentially inflating) archive stream - which {@link
+     * #skip} would do.
+     *
+     * Also updates bytes-read counter.
+     */
+    private void realSkip(final long value) throws IOException {
+        if (value >= 0) {
+            long skipped = 0;
+            while (skipped < value) {
+                final long rem = value - skipped;
+                final int x = in.read(skipBuf, 0, (int) (skipBuf.length > rem ? rem : skipBuf.length));
+                if (x == -1) {
+                    return;
+                }
+                count(x);
+                skipped += x;
+            }
+            return;
+        }
+        throw new IllegalArgumentException();
+    }
+
+    /**
+     * Reads bytes by reading from the underlying stream rather than
+     * the (potentially inflating) archive stream - which {@link #read} would do.
+     *
+     * Also updates bytes-read counter.
+     */
+    private int readOneByte() throws IOException {
+        final int b = in.read();
+        if (b != -1) {
+            count(1);
+        }
+        return b;
+    }
+
+    private boolean isFirstByteOfEocdSig(final int b) {
+        return b == ZipArchiveOutputStream.EOCD_SIG[0];
+    }
+
+    private static final byte[] APK_SIGNING_BLOCK_MAGIC = new byte[] {
+        'A', 'P', 'K', ' ', 'S', 'i', 'g', ' ', 'B', 'l', 'o', 'c', 'k', ' ', '4', '2',
+    };
+    private static final BigInteger LONG_MAX = BigInteger.valueOf(Long.MAX_VALUE);
+
+    /**
+     * Checks whether this might be an APK Signing Block.
+     *
+     * <p>Unfortunately the APK signing block does not start with some kind of signature, it rather ends with one. It
+     * starts with a length, so what we do is parse the suspect length, skip ahead far enough, look for the signature
+     * and if we've found it, return true.</p>
+     *
+     * @param suspectLocalFileHeader the bytes read from the underlying stream in the expectation that they would hold
+     * the local file header of the next entry.
+     *
+     * @return true if this looks like a APK signing block
+     *
+     * @see <a href="https://source.android.com/security/apksigning/v2">https://source.android.com/security/apksigning/v2</a>
+     */
+    private boolean isApkSigningBlock(byte[] suspectLocalFileHeader) throws IOException {
+        // length of block excluding the size field itself
+        BigInteger len = ZipEightByteInteger.getValue(suspectLocalFileHeader);
+        // LFH has already been read and all but the first eight bytes contain (part of) the APK signing block,
+        // also subtract 16 bytes in order to position us at the magic string
+        BigInteger toSkip = len.add(BigInteger.valueOf(DWORD - suspectLocalFileHeader.length
+            - (long) APK_SIGNING_BLOCK_MAGIC.length));
+        byte[] magic = new byte[APK_SIGNING_BLOCK_MAGIC.length];
+
+        try {
+            if (toSkip.signum() < 0) {
+                // suspectLocalFileHeader contains the start of suspect magic string
+                int off = suspectLocalFileHeader.length + toSkip.intValue();
+                // length was shorter than magic length
+                if (off < DWORD) {
+                    return false;
+                }
+                int bytesInBuffer = Math.abs(toSkip.intValue());
+                System.arraycopy(suspectLocalFileHeader, off, magic, 0, Math.min(bytesInBuffer, magic.length));
+                if (bytesInBuffer < magic.length) {
+                    readFully(magic, bytesInBuffer);
+                }
+            } else {
+                while (toSkip.compareTo(LONG_MAX) > 0) {
+                    realSkip(Long.MAX_VALUE);
+                    toSkip = toSkip.add(LONG_MAX.negate());
+                }
+                realSkip(toSkip.longValue());
+                readFully(magic);
+            }
+        } catch (EOFException ex) { //NOSONAR
+            // length was invalid
+            return false;
+        }
+        return Arrays.equals(magic, APK_SIGNING_BLOCK_MAGIC);
+    }
+
+    /**
+     * Structure collecting information for the entry that is
+     * currently being read.
+     */
+    private static final class CurrentEntry {
+
+        /**
+         * Current ZIP entry.
+         */
+        private final ZipArchiveEntry entry = new ZipArchiveEntry();
+
+        /**
+         * Does the entry use a data descriptor?
+         */
+        private boolean hasDataDescriptor;
+
+        /**
+         * Does the entry have a ZIP64 extended information extra field.
+         */
+        private boolean usesZip64;
+
+        /**
+         * Number of bytes of entry content read by the client if the
+         * entry is STORED.
+         */
+        private long bytesRead;
+
+        /**
+         * Number of bytes of entry content read from the stream.
+         *
+         * <p>This may be more than the actual entry's length as some
+         * stuff gets buffered up and needs to be pushed back when the
+         * end of the entry has been reached.</p>
+         */
+        private long bytesReadFromStream;
+
+        /**
+         * The checksum calculated as the current entry is read.
+         */
+        private final CRC32 crc = new CRC32();
+
+        /**
+         * The input stream decompressing the data for shrunk and imploded entries.
+         */
+        private InputStream in;
+    }
+
+    /**
+     * Bounded input stream adapted from commons-io
+     */
+    private class BoundedInputStream extends InputStream {
+
+        /** the wrapped input stream */
+        private final InputStream in;
+
+        /** the max length to provide */
+        private final long max;
+
+        /** the number of bytes already returned */
+        private long pos = 0;
+
+        /**
+         * Creates a new <code>BoundedInputStream</code> that wraps the given input
+         * stream and limits it to a certain size.
+         *
+         * @param in The wrapped input stream
+         * @param size The maximum number of bytes to return
+         */
+        public BoundedInputStream(final InputStream in, final long size) {
+            this.max = size;
+            this.in = in;
+        }
+
+        @Override
+        public int read() throws IOException {
+            if (max >= 0 && pos >= max) {
+                return -1;
+            }
+            final int result = in.read();
+            pos++;
+            count(1);
+            current.bytesReadFromStream++;
+            return result;
+        }
+
+        @Override
+        public int read(final byte[] b) throws IOException {
+            return this.read(b, 0, b.length);
+        }
+
+        @Override
+        public int read(final byte[] b, final int off, final int len) throws IOException {
+            if (len == 0) {
+                return 0;
+            }
+            if (max >= 0 && pos >= max) {
+                return -1;
+            }
+            final long maxRead = max >= 0 ? Math.min(len, max - pos) : len;
+            final int bytesRead = in.read(b, off, (int) maxRead);
+
+            if (bytesRead == -1) {
+                return -1;
+            }
+
+            pos += bytesRead;
+            count(bytesRead);
+            current.bytesReadFromStream += bytesRead;
+            return bytesRead;
+        }
+
+        @Override
+        public long skip(final long n) throws IOException {
+            final long toSkip = max >= 0 ? Math.min(n, max - pos) : n;
+            final long skippedBytes = IOUtils.skip(in, toSkip);
+            pos += skippedBytes;
+            return skippedBytes;
+        }
+
+        @Override
+        public int available() throws IOException {
+            if (max >= 0 && pos >= max) {
+                return 0;
+            }
+            return in.available();
+        }
+    }
+}

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/COMPRESS-477/split_zip_created_by_zip/file_to_compare_1

@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.commons.compress.archivers.dump;
+
+
+/**
+ * Unsupported compression algorithm. The dump archive uses an unsupported
+ * compression algorithm (BZLIB2 or LZO).
+ */
+public class UnsupportedCompressionAlgorithmException
+    extends DumpArchiveException {
+    private static final long serialVersionUID = 1L;
+
+    public UnsupportedCompressionAlgorithmException() {
+        super("this file uses an unsupported compression algorithm.");
+    }
+
+    public UnsupportedCompressionAlgorithmException(final String alg) {
+        super("this file uses an unsupported compression algorithm: " + alg +
+            ".");
+    }
+}

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/COMPRESS-477/split_zip_created_by_zip/file_to_compare_2

@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.commons.compress.compressors.deflate;
+
+import java.util.zip.Deflater;
+
+/**
+ * Parameters for the Deflate compressor.
+ * @since 1.9
+ */
+public class DeflateParameters {
+
+    private boolean zlibHeader = true;
+    private int compressionLevel = Deflater.DEFAULT_COMPRESSION;
+
+    /**
+     * Whether or not the zlib header shall be written (when
+     * compressing) or expected (when decompressing).
+     * @return true if zlib header shall be written
+     */
+    public boolean withZlibHeader() {
+        return zlibHeader;
+    }
+
+    /**
+     * Sets the zlib header presence parameter.
+     *
+     * <p>This affects whether or not the zlib header will be written
+     * (when compressing) or expected (when decompressing).</p>
+     *
+     * @param zlibHeader true if zlib header shall be written
+     */
+    public void setWithZlibHeader(final boolean zlibHeader) {
+        this.zlibHeader = zlibHeader;
+    }
+
+    /**
+     * The compression level.
+     * @see #setCompressionLevel
+     * @return the compression level
+     */
+    public int getCompressionLevel() {
+        return compressionLevel;
+    }
+
+    /**
+     * Sets the compression level.
+     *
+     * @param compressionLevel the compression level (between 0 and 9)
+     * @see Deflater#NO_COMPRESSION
+     * @see Deflater#BEST_SPEED
+     * @see Deflater#DEFAULT_COMPRESSION
+     * @see Deflater#BEST_COMPRESSION
+     */
+    public void setCompressionLevel(final int compressionLevel) {
+        if (compressionLevel < -1 || compressionLevel > 9) {
+            throw new IllegalArgumentException("Invalid Deflate compression level: " + compressionLevel);
+        }
+        this.compressionLevel = compressionLevel;
+    }
+
+}

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/org/apache/commons/compress/ar/number_parsing/bad_length-fail.ar

@@ -0,0 +1,8 @@
+!<arch>
+//                                              68        `
+this_is_a_long_file_name.txt/
+this_is_a_long_file_name_as_well.txt/
+/0              1454693980  1000  1000  100664  1.23      `
+Hello, world!
+/30             1454694016  1000  1000  100664  4         `
+Bye

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/org/apache/commons/compress/ar/number_parsing/bad_long_namelen_bsd-fail.ar

@@ -0,0 +1,5 @@
+!<arch>
+#1/123456789012 1311256511  1000  1000  100644  42        `
+this_is_a_long_file_name.txtHello, world!
+#1/36           1454694016  1000  1000  100664  40        `
+this_is_a_long_file_name_as_well.txtBye

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/org/apache/commons/compress/ar/number_parsing/bad_long_namelen_gnu1-fail.ar

@@ -0,0 +1,8 @@
+!<arch>
+//                                              68        `
+this_is_a_long_file_name.txt/
+this_is_a_long_file_name_as_well.txt/
+/9999999999     1454693980  1000  1000  100664  14        `
+Hello, world!
+/30             1454694016  1000  1000  100664  4         `
+Bye

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/org/apache/commons/compress/ar/number_parsing/bad_long_namelen_gnu2-fail.ar

@@ -0,0 +1,6 @@
+!<arch>
+//                                              68        `
+this_is_a_long_file_name.txt/
+this_is_a_long_file_name_as_well.txt/
+/29             1454694016  1000  1000  100664  4         `
+Bye

local-test-commons-compress-delta-02/afc-commons-compress/src/test/resources/org/apache/commons/compress/ar/number_parsing/bad_user-fail.ar

@@ -0,0 +1,8 @@
+!<arch>
+//                                              68        `
+this_is_a_long_file_name.txt/
+this_is_a_long_file_name_as_well.txt/
+/0              1454693980  9e99  1000  100664  14        `
+Hello, world!
+/30             1454694016  1000  1000  100664  4         `
+Bye

local-test-commons-compress-delta-02/fuzz-tooling/infra/build_specified_commit.py

@@ -0,0 +1,410 @@
+# Copyright 2019 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.
+"""Module to build a image from a specific commit, branch or pull request.
+
+This module is allows each of the OSS Fuzz projects fuzzers to be built
+from a specific point in time. This feature can be used for implementations
+like continuious integration fuzzing and bisection to find errors
+"""
+import argparse
+import bisect
+import datetime
+import os
+import collections
+import json
+import logging
+import re
+import shutil
+import tempfile
+
+import helper
+import repo_manager
+import retry
+import utils
+
+BuildData = collections.namedtuple(
+    'BuildData', ['project_name', 'engine', 'sanitizer', 'architecture'])
+
+_GIT_DIR_MARKER = 'gitdir: '
+_IMAGE_BUILD_TRIES = 3
+
+
+class BaseBuilderRepo:
+  """Repo of base-builder images."""
+
+  def __init__(self):
+    self.timestamps = []
+    self.digests = []
+
+  def add_digest(self, timestamp, digest):
+    """Add a digest."""
+    self.timestamps.append(timestamp)
+    self.digests.append(digest)
+
+  def find_digest(self, timestamp):
+    """Find the latest image before the given timestamp."""
+    index = bisect.bisect_right(self.timestamps, timestamp)
+    if index > 0:
+      return self.digests[index - 1]
+
+    logging.error('Failed to find suitable base-builder.')
+    return None
+
+
+def _replace_gitdir(src_dir, file_path):
+  """Replace gitdir with a relative path."""
+  with open(file_path) as handle:
+    lines = handle.readlines()
+
+  new_lines = []
+  for line in lines:
+    if line.startswith(_GIT_DIR_MARKER):
+      absolute_path = line[len(_GIT_DIR_MARKER):].strip()
+      if not os.path.isabs(absolute_path):
+        # Already relative.
+        return
+
+      current_dir = os.path.dirname(file_path)
+      # Rebase to /src rather than the host src dir.
+      base_dir = current_dir.replace(src_dir, '/src')
+      relative_path = os.path.relpath(absolute_path, base_dir)
+      logging.info('Replacing absolute submodule gitdir from %s to %s',
+                   absolute_path, relative_path)
+
+      line = _GIT_DIR_MARKER + relative_path
+
+    new_lines.append(line)
+
+  with open(file_path, 'w') as handle:
+    handle.write(''.join(new_lines))
+
+
+def _make_gitdirs_relative(src_dir):
+  """Make gitdirs relative."""
+  for root_dir, _, files in os.walk(src_dir):
+    for filename in files:
+      if filename != '.git':
+        continue
+
+      file_path = os.path.join(root_dir, filename)
+      _replace_gitdir(src_dir, file_path)
+
+
+def _replace_base_builder_digest(dockerfile_path, digest):
+  """Replace the base-builder digest in a Dockerfile."""
+  with open(dockerfile_path) as handle:
+    lines = handle.readlines()
+
+  new_lines = []
+  for line in lines:
+    if line.strip().startswith('FROM'):
+      line = 'FROM ghcr.io/aixcc-finals/base-builder@' + digest + '\n'
+
+    new_lines.append(line)
+
+  with open(dockerfile_path, 'w') as handle:
+    handle.write(''.join(new_lines))
+
+
+def copy_src_from_docker(project_name, host_dir):
+  """Copy /src from docker to the host."""
+  # Copy /src to host.
+  image_name = 'gcr.io/oss-fuzz/' + project_name
+  src_dir = os.path.join(host_dir, 'src')
+  if os.path.exists(src_dir):
+    shutil.rmtree(src_dir, ignore_errors=True)
+
+  docker_args = [
+      '-v',
+      host_dir + ':/out',
+      image_name,
+      'cp',
+      '-r',
+      '-p',
+      '/src',
+      '/out',
+  ]
+  helper.docker_run(docker_args)
+
+  # Submodules can have gitdir entries which point to absolute paths. Make them
+  # relative, as otherwise we can't do operations on the checkout on the host.
+  _make_gitdirs_relative(src_dir)
+  return src_dir
+
+
+@retry.wrap(_IMAGE_BUILD_TRIES, 2)
+def _build_image_with_retries(project_name):
+  """Build image with retries."""
+  return helper.build_image_impl(helper.Project(project_name))
+
+
+def get_required_post_checkout_steps(dockerfile_path):
+  """Get required post checkout steps (best effort)."""
+
+  checkout_pattern = re.compile(r'\s*RUN\s*(git|svn|hg)')
+
+  # If the build.sh is copied from upstream, we need to copy it again after
+  # changing the revision to ensure correct building.
+  post_run_pattern = re.compile(r'\s*RUN\s*(.*build\.sh.*(\$SRC|/src).*)')
+
+  with open(dockerfile_path) as handle:
+    lines = handle.readlines()
+
+  subsequent_run_cmds = []
+  for i, line in enumerate(lines):
+    if checkout_pattern.match(line):
+      subsequent_run_cmds = []
+      continue
+
+    match = post_run_pattern.match(line)
+    if match:
+      workdir = helper.workdir_from_lines(lines[:i])
+      command = match.group(1)
+      subsequent_run_cmds.append((workdir, command))
+
+  return subsequent_run_cmds
+
+
+# pylint: disable=too-many-locals
+def build_fuzzers_from_commit(commit,
+                              build_repo_manager,
+                              host_src_path,
+                              build_data,
+                              base_builder_repo=None):
+  """Builds a OSS-Fuzz fuzzer at a specific commit SHA.
+
+  Args:
+    commit: The commit SHA to build the fuzzers at.
+    build_repo_manager: The OSS-Fuzz project's repo manager to be built at.
+    build_data: A struct containing project build information.
+    base_builder_repo: A BaseBuilderRepo.
+  Returns:
+    0 on successful build or error code on failure.
+  """
+  oss_fuzz_repo_manager = repo_manager.RepoManager(helper.OSS_FUZZ_DIR)
+  num_retry = 1
+
+  def cleanup():
+    # Re-copy /src for a clean checkout every time.
+    copy_src_from_docker(build_data.project_name,
+                         os.path.dirname(host_src_path))
+    build_repo_manager.fetch_all_remotes()
+
+  projects_dir = os.path.join('projects', build_data.project_name)
+  dockerfile_path = os.path.join(projects_dir, 'Dockerfile')
+
+  for i in range(num_retry + 1):
+    build_repo_manager.checkout_commit(commit, clean=False)
+
+    post_checkout_steps = get_required_post_checkout_steps(dockerfile_path)
+    for workdir, post_checkout_step in post_checkout_steps:
+      logging.info('Running post-checkout step `%s` in %s.', post_checkout_step,
+                   workdir)
+      helper.docker_run([
+          '-w',
+          workdir,
+          '-v',
+          host_src_path + ':' + '/src',
+          'gcr.io/oss-fuzz/' + build_data.project_name,
+          '/bin/bash',
+          '-c',
+          post_checkout_step,
+      ])
+
+    project = helper.Project(build_data.project_name)
+    result = helper.build_fuzzers_impl(project=project,
+                                       clean=True,
+                                       engine=build_data.engine,
+                                       sanitizer=build_data.sanitizer,
+                                       architecture=build_data.architecture,
+                                       env_to_add=None,
+                                       source_path=host_src_path,
+                                       mount_path='/src')
+    if result or i == num_retry:
+      break
+
+    # Retry with an OSS-Fuzz builder container that's closer to the project
+    # commit date.
+    commit_date = build_repo_manager.commit_date(commit)
+
+    # Find first change in the projects/<PROJECT> directory before the project
+    # commit date.
+    oss_fuzz_commit, _, _ = oss_fuzz_repo_manager.git([
+        'log', '--before=' + commit_date.isoformat(), '-n1', '--format=%H',
+        projects_dir
+    ],
+                                                      check_result=True)
+    oss_fuzz_commit = oss_fuzz_commit.strip()
+    if not oss_fuzz_commit:
+      logging.info(
+          'Could not find first OSS-Fuzz commit prior to upstream commit. '
+          'Falling back to oldest integration commit.')
+
+      # Find the oldest commit.
+      oss_fuzz_commit, _, _ = oss_fuzz_repo_manager.git(
+          ['log', '--reverse', '--format=%H', projects_dir], check_result=True)
+
+      oss_fuzz_commit = oss_fuzz_commit.splitlines()[0].strip()
+
+    if not oss_fuzz_commit:
+      logging.error('Failed to get oldest integration commit.')
+      break
+
+    logging.info('Build failed. Retrying on earlier OSS-Fuzz commit %s.',
+                 oss_fuzz_commit)
+
+    # Check out projects/<PROJECT> dir to the commit that was found.
+    oss_fuzz_repo_manager.git(['checkout', oss_fuzz_commit, projects_dir],
+                              check_result=True)
+
+    # Also use the closest base-builder we can find.
+    if base_builder_repo:
+      base_builder_digest = base_builder_repo.find_digest(commit_date)
+      if not base_builder_digest:
+        return False
+
+      logging.info('Using base-builder with digest %s.', base_builder_digest)
+      _replace_base_builder_digest(dockerfile_path, base_builder_digest)
+
+    # Rebuild image and re-copy src dir since things in /src could have changed.
+    if not _build_image_with_retries(build_data.project_name):
+      logging.error('Failed to rebuild image.')
+      return False
+
+    cleanup()
+
+  cleanup()
+  return result
+
+
+def detect_main_repo(project_name, repo_name=None, commit=None):
+  """Checks a docker image for the main repo of an OSS-Fuzz project.
+
+  Note: The default is to use the repo name to detect the main repo.
+
+  Args:
+    project_name: The name of the oss-fuzz project.
+    repo_name: The name of the main repo in an OSS-Fuzz project.
+    commit: A commit SHA that is associated with the main repo.
+
+  Returns:
+    A tuple containing (the repo's origin, the repo's path).
+  """
+
+  if not repo_name and not commit:
+    logging.error(
+        'Error: can not detect main repo without a repo_name or a commit.')
+    return None, None
+  if repo_name and commit:
+    logging.info(
+        'Both repo name and commit specific. Using repo name for detection.')
+
+  # Change to oss-fuzz main directory so helper.py runs correctly.
+  utils.chdir_to_root()
+  if not _build_image_with_retries(project_name):
+    logging.error('Error: building %s image failed.', project_name)
+    return None, None
+  docker_image_name = 'gcr.io/oss-fuzz/' + project_name
+  command_to_run = [
+      'docker', 'run', '--rm', '-t', docker_image_name, 'python3',
+      os.path.join('/opt', 'cifuzz', 'detect_repo.py')
+  ]
+  if repo_name:
+    command_to_run.extend(['--repo_name', repo_name])
+  else:
+    command_to_run.extend(['--example_commit', commit])
+  out, _, _ = utils.execute(command_to_run)
+  match = re.search(r'\bDetected repo: ([^ ]+) ([^ ]+)', out.rstrip())
+  if match and match.group(1) and match.group(2):
+    return match.group(1), match.group(2)
+
+  logging.error('Failed to detect repo:\n%s', out)
+  return None, None
+
+
+def load_base_builder_repo():
+  """Get base-image digests."""
+  gcloud_path = shutil.which('gcloud')
+  if not gcloud_path:
+    logging.warning('gcloud not found in PATH.')
+    return None
+
+  result, _, _ = utils.execute([
+      gcloud_path,
+      'container',
+      'images',
+      'list-tags',
+      'ghcr.io/aixcc-finals/base-builder',
+      '--format=json',
+      '--sort-by=timestamp',
+  ],
+                               check_result=True)
+  result = json.loads(result)
+
+  repo = BaseBuilderRepo()
+  for image in result:
+    timestamp = datetime.datetime.fromisoformat(
+        image['timestamp']['datetime']).astimezone(datetime.timezone.utc)
+    repo.add_digest(timestamp, image['digest'])
+
+  return repo
+
+
+def main():
+  """Main function."""
+  logging.getLogger().setLevel(logging.INFO)
+
+  parser = argparse.ArgumentParser(
+      description='Build fuzzers at a specific commit')
+  parser.add_argument('--project_name',
+                      help='The name of the project where the bug occurred.',
+                      required=True)
+  parser.add_argument('--commit',
+                      help='The newest commit SHA to be bisected.',
+                      required=True)
+  parser.add_argument('--engine',
+                      help='The default is "libfuzzer".',
+                      default='libfuzzer')
+  parser.add_argument('--sanitizer',
+                      default='address',
+                      help='The default is "address".')
+  parser.add_argument('--architecture', default='x86_64')
+
+  args = parser.parse_args()
+
+  repo_url, repo_path = detect_main_repo(args.project_name, commit=args.commit)
+
+  if not repo_url or not repo_path:
+    raise ValueError('Main git repo can not be determined.')
+
+  with tempfile.TemporaryDirectory() as tmp_dir:
+    host_src_dir = copy_src_from_docker(args.project_name, tmp_dir)
+    build_repo_manager = repo_manager.RepoManager(
+        os.path.join(host_src_dir, os.path.basename(repo_path)))
+    base_builder_repo = load_base_builder_repo()
+
+    build_data = BuildData(project_name=args.project_name,
+                           engine=args.engine,
+                           sanitizer=args.sanitizer,
+                           architecture=args.architecture)
+    if not build_fuzzers_from_commit(args.commit,
+                                     build_repo_manager,
+                                     host_src_dir,
+                                     build_data,
+                                     base_builder_repo=base_builder_repo):
+      raise RuntimeError('Failed to build.')
+
+
+if __name__ == '__main__':
+  main()

local-test-commons-compress-delta-02/fuzz-tooling/infra/cifuzz/test_data/external-project/.clusterfuzzlite/build.sh

@@ -0,0 +1,24 @@
+#!/bin/bash -eu
+# Copyright 2020 Google Inc.
+#
+# 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.
+#
+################################################################################
+
+make clean  # Not strictly necessary, since we are building in a fresh dir.
+make -j$(nproc) all    # Build the fuzz targets.
+
+# Copy the fuzzer executables, zip-ed corpora, option and dictionary files to $OUT
+find . -name '*_fuzzer' -exec cp -v '{}' $OUT ';'
+find . -name '*_fuzzer.dict' -exec cp -v '{}' $OUT ';'     # If you have dictionaries.
+find . -name '*_fuzzer.options' -exec cp -v '{}' $OUT ';'  # If you have custom options.

local-test-commons-compress-delta-02/fuzz-tooling/infra/constants.py

@@ -0,0 +1,49 @@
+# Copyright 2021 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.
+#
+################################################################################
+"""Constants for OSS-Fuzz."""
+
+DEFAULT_EXTERNAL_BUILD_INTEGRATION_PATH = '.clusterfuzzlite'
+
+DEFAULT_LANGUAGE = 'c++'
+DEFAULT_SANITIZER = 'address'
+DEFAULT_ARCHITECTURE = 'x86_64'
+DEFAULT_ENGINE = 'libfuzzer'
+LANGUAGES = [
+    'c',
+    'c++',
+    'go',
+    'javascript',
+    'jvm',
+    'python',
+    'rust',
+    'swift',
+    'ruby',
+]
+LANGUAGES_WITH_COVERAGE_SUPPORT = [
+    'c', 'c++', 'go', 'jvm', 'python', 'rust', 'swift', 'javascript', 'ruby'
+]
+SANITIZERS = [
+    'address',
+    'none',
+    'memory',
+    'undefined',
+    'thread',
+    'coverage',
+    'introspector',
+    'hwaddress',
+]
+ARCHITECTURES = ['i386', 'x86_64', 'aarch64']
+ENGINES = ['libfuzzer', 'afl', 'honggfuzz', 'centipede', 'none', 'wycheproof']

local-test-commons-compress-delta-02/fuzz-tooling/infra/tools/wycheproof/.gitignore

@@ -0,0 +1 @@
+wycheproof.zip

local-test-commons-compress-delta-02/fuzz-tooling/infra/tools/wycheproof/generate_job.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+# Copyright 2022 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.
+#
+################################################################################
+"""Script for generating an OSS-Fuzz job for a wycheproof project."""
+import sys
+
+
+def main():
+  """Usage generate_job.py <project>."""
+  project = sys.argv[1]
+  print(f'Name: wycheproof_nosanitizer_{project}')
+  job_definition = f"""CUSTOM_BINARY = False
+BAD_BUILD_CHECK = False
+APP_NAME = WycheproofTarget.bash
+THREAD_ALIVE_CHECK_INTERVAL = 10
+TEST_TIMEOUT = 3600
+CRASH_RETRIES = 1
+AGGREGATE_COVERAGE = False
+TESTCASE_COVERAGE = False
+FILE_GITHUB_ISSUE = False
+MANAGED = False
+MAX_FUZZ_THREADS = 1
+RELEASE_BUILD_BUCKET_PATH = gs://clusterfuzz-builds-wycheproof/{project}/{project}-none-([0-9]+).zip
+PROJECT_NAME = {project}
+SUMMARY_PREFIX = {project}
+REVISION_VARS_URL = https://commondatastorage.googleapis.com/clusterfuzz-builds-wycheproof/{project}/{project}-none-%s.srcmap.json
+FUZZ_LOGS_BUCKET = {project}-logs.clusterfuzz-external.appspot.com
+CORPUS_BUCKET = {project}-corpus.clusterfuzz-external.appspot.com
+QUARANTINE_BUCKET = {project}-quarantine.clusterfuzz-external.appspot.com
+BACKUP_BUCKET = {project}-backup.clusterfuzz-external.appspot.com
+AUTOMATIC_LABELS = Proj-{project},Engine-wycheproof
+"""
+  print(job_definition)
+
+
+if __name__ == '__main__':
+  main()