From 926b7dc527c4520c64cb78eff03a90cde9301d5e Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Wed, 24 Sep 2025 21:43:38 +0200 Subject: [PATCH 1/9] feat: Add configurable maximum entry name length MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This change introduces a configurable limit on archive entry names. Although formats like **AR**, **CPIO**, and **TAR** permit arbitrarily long path names, real operating systems and file systems impose much stricter limits: * Individual path segments (file names) are typically limited to 255 bytes. * Full paths are usually capped at a few KiB (e.g. 1024 bytes on macOS via `MAX_PATH`). #### What’s new * Added a new common builder, `AbstractArchiveBuilder`, inserted in the hierarchy between archive stream builders and `AbstractStreamBuilder`. * Introduced a new configuration option: `setMaxEntryLength`. * Default value is `Short.MAX_VALUE`, which is higher than any realistic OS limit. * Enforced the limit across: * All `ArchiveInputStream` implementations * `SevenZFile`, `TarFile`, and `ZipFile` * Added a dedicated test suite to verify: * Entry names up to `Short.MAX_VALUE` are handled correctly. * Entries exceeding a lowered limit result in an exception. --- src/changes/changes.xml | 1 + .../archivers/AbstractArchiveBuilder.java | 77 ++++ .../archivers/ArchiveInputStream.java | 72 ++-- .../archivers/ar/ArArchiveInputStream.java | 17 +- .../archivers/arj/ArjArchiveInputStream.java | 28 +- .../cpio/CpioArchiveInputStream.java | 16 +- .../dump/DumpArchiveInputStream.java | 18 +- .../compress/archivers/sevenz/SevenZFile.java | 29 +- .../archivers/tar/AbstractTarBuilder.java | 4 +- .../archivers/tar/TarArchiveInputStream.java | 15 +- .../compress/archivers/tar/TarFile.java | 17 +- .../compress/archivers/tar/TarUtils.java | 118 ++++-- .../archivers/zip/ZipArchiveInputStream.java | 8 +- .../compress/archivers/zip/ZipFile.java | 81 +++- .../commons/compress/utils/ArchiveUtils.java | 27 ++ .../archivers/MaxNameEntryLengthTest.java | 348 ++++++++++++++++++ .../cpio/CpioArchiveInputStreamTest.java | 28 -- .../tar/TarArchiveInputStreamTest.java | 8 +- .../compress/archivers/tar/TarFileTest.java | 3 +- .../compress/archivers/tar/TarUtilsTest.java | 24 +- .../synthetic/long-name/bin-big-endian.cpio | Bin 0 -> 32794 bytes .../long-name/bin-little-endian.cpio | Bin 0 -> 32794 bytes .../resources/synthetic/long-name/bsd-fail.ar | 2 + .../long-name/bsd-short-max-value.ar | 3 + .../synthetic/long-name/crc-fail.cpio | Bin 0 -> 113 bytes .../resources/synthetic/long-name/crc.cpio | 1 + .../resources/synthetic/long-name/gnu-fail.ar | 2 + .../synthetic/long-name/gnu-fail.tar | Bin 0 -> 512 bytes .../long-name/gnu-short-max-value.ar | 4 + .../resources/synthetic/long-name/gnu.tar | Bin 0 -> 34816 bytes .../long-name/long-name-reversed.dump | Bin 0 -> 267264 bytes .../synthetic/long-name/long-name.7z | Bin 0 -> 65587 bytes .../synthetic/long-name/long-name.arj | Bin 0 -> 2669 bytes .../synthetic/long-name/long-name.dump | Bin 0 -> 267264 bytes .../synthetic/long-name/long-name.zip | Bin 0 -> 65632 bytes .../synthetic/long-name/newc-fail.cpio | Bin 0 -> 113 bytes .../resources/synthetic/long-name/newc.cpio | 1 + .../synthetic/long-name/odc-fail.cpio | Bin 0 -> 78 bytes .../resources/synthetic/long-name/odc.cpio | 1 + .../synthetic/long-name/pax-fail.tar | Bin 0 -> 528 bytes .../resources/synthetic/long-name/pax.tar | Bin 0 -> 35328 bytes 41 files changed, 780 insertions(+), 173 deletions(-) create mode 100644 src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java create mode 100644 src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java create mode 100644 src/test/resources/synthetic/long-name/bin-big-endian.cpio create mode 100644 src/test/resources/synthetic/long-name/bin-little-endian.cpio create mode 100644 src/test/resources/synthetic/long-name/bsd-fail.ar create mode 100644 src/test/resources/synthetic/long-name/bsd-short-max-value.ar create mode 100644 src/test/resources/synthetic/long-name/crc-fail.cpio create mode 100644 src/test/resources/synthetic/long-name/crc.cpio create mode 100644 src/test/resources/synthetic/long-name/gnu-fail.ar create mode 100644 src/test/resources/synthetic/long-name/gnu-fail.tar create mode 100644 src/test/resources/synthetic/long-name/gnu-short-max-value.ar create mode 100644 src/test/resources/synthetic/long-name/gnu.tar create mode 100644 src/test/resources/synthetic/long-name/long-name-reversed.dump create mode 100644 src/test/resources/synthetic/long-name/long-name.7z create mode 100644 src/test/resources/synthetic/long-name/long-name.arj create mode 100644 src/test/resources/synthetic/long-name/long-name.dump create mode 100644 src/test/resources/synthetic/long-name/long-name.zip create mode 100644 src/test/resources/synthetic/long-name/newc-fail.cpio create mode 100644 src/test/resources/synthetic/long-name/newc.cpio create mode 100644 src/test/resources/synthetic/long-name/odc-fail.cpio create mode 100644 src/test/resources/synthetic/long-name/odc.cpio create mode 100644 src/test/resources/synthetic/long-name/pax-fail.tar create mode 100644 src/test/resources/synthetic/long-name/pax.tar diff --git a/src/changes/changes.xml b/src/changes/changes.xml index 7f46fc8c5ff..0c086367200 100644 --- a/src/changes/changes.xml +++ b/src/changes/changes.xml @@ -123,6 +123,7 @@ The type attribute can be add,update,fix,remove. Introduce builders for all ArchiveInputStream implementations and deprecate some constructors. TarFile now implements IOIterable<TarArchiveEntry>. Add a builder for the TarFile class and deprecate some constructors. + Add a configurable maxEntryNameLength option to all archivers. Bump org.apache.commons:commons-parent from 85 to 88 #707. Extract duplicate code in org.apache.commons.compress.harmony.pack200.IntList. diff --git a/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java b/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java new file mode 100644 index 00000000000..67f713c9dbe --- /dev/null +++ b/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java @@ -0,0 +1,77 @@ +/* + * 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 + * + * https://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; + +import org.apache.commons.io.build.AbstractStreamBuilder; + +/** + * Base builder for all archive formats. + * + * @param The type of archive stream or file to build. + * @param The type of the concrete builder subclass. + * @since 1.29.0 + */ +public abstract class AbstractArchiveBuilder> + extends AbstractStreamBuilder { + + private int maxEntryNameLength = Short.MAX_VALUE; + + /** + * Constructs a new instance. + */ + protected AbstractArchiveBuilder() { + // empty + } + + /** + * Sets the maximum length, in bytes, of an archive entry name. + * + *

Most operating systems and file systems impose relatively small limits on + * file name or path length, which are sufficient for everyday use. By contrast, + * many archive formats permit much longer names: for example, TAR can encode + * names of several gigabytes, while ZIP allows up to 64 KiB.

+ * + *

This setting applies an upper bound on entry name length after encoding + * with the {@link #setCharset configured charset}. If an entry name exceeds this + * limit, an {@link ArchiveException} will be thrown during reading.

+ * + *

The default is {@link Short#MAX_VALUE}, which already exceeds the limits + * of most operating systems.

+ * + * @param maxEntryNameLength The maximum entry name length in bytes; must be positive + * @return {@code this} instance. + * @throws IllegalArgumentException If {@code maxEntryNameLength} is not positive. + */ + public B setMaxEntryNameLength(final int maxEntryNameLength) { + if (maxEntryNameLength <= 0) { + throw new IllegalArgumentException("maxEntryNameLength must be positive"); + } + this.maxEntryNameLength = maxEntryNameLength; + return asThis(); + } + + /** + * Gets the maximum length of an archive entry name. + * + * @return The maximum length of an archive entry name. + */ + public int getMaxEntryNameLength() { + return maxEntryNameLength; + } +} diff --git a/src/main/java/org/apache/commons/compress/archivers/ArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/ArchiveInputStream.java index 73c4dbefd3a..6653ec0725a 100644 --- a/src/main/java/org/apache/commons/compress/archivers/ArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/ArchiveInputStream.java @@ -26,7 +26,6 @@ import java.util.Objects; import org.apache.commons.io.Charsets; -import org.apache.commons.io.build.AbstractStreamBuilder; import org.apache.commons.io.function.IOConsumer; import org.apache.commons.io.function.IOIterator; import org.apache.commons.io.input.NullInputStream; @@ -52,24 +51,6 @@ */ public abstract class ArchiveInputStream extends FilterInputStream { - /** - * Generic builder for ArchiveInputStream instances. - * - * @param The type of {@link ArchiveInputStream} to build. - * @param The type of the concrete AbstractBuilder. - * @since 1.29.0 - */ - public abstract static class AbstractBuilder, B extends AbstractBuilder> - extends AbstractStreamBuilder { - - /** - * Constructs a new instance. - */ - protected AbstractBuilder() { - // empty - } - } - /** * An iterator over a collection of a specific {@link ArchiveEntry} type. */ @@ -114,37 +95,56 @@ public Iterator unwrap() { /** The number of bytes read in this stream. */ private long bytesRead; - private Charset charset; + private final Charset charset; + + private final int maxEntryNameLength; /** * Constructs a new instance. */ @SuppressWarnings("resource") public ArchiveInputStream() { - this(new NullInputStream(), Charset.defaultCharset()); + this(new NullInputStream(), Charset.defaultCharset().name()); } /** * Constructs a new instance. * * @param inputStream the underlying input stream, or {@code null} if this instance is to be created without an underlying stream. - * @param charset charset. + * @param charsetName charset name. + * @since 1.26.0 + */ + protected ArchiveInputStream(final InputStream inputStream, final String charsetName) { + super(inputStream == null ? new NullInputStream() : inputStream); + this.charset = Charsets.toCharset(charsetName); + this.maxEntryNameLength = Short.MAX_VALUE; + } + + /** + * Constructs a new instance from a builder. + * + * @param builder The builder. * @since 1.29.0 */ - protected ArchiveInputStream(final InputStream inputStream, final Charset charset) { - super(inputStream); - this.charset = Charsets.toCharset(charset); + protected ArchiveInputStream(AbstractArchiveBuilder builder) throws IOException { + this(builder.getInputStream(), builder); } /** - * Constructs a new instance. + * Constructs a new instance from a builder and an input stream. * - * @param inputStream the underlying input stream, or {@code null} if this instance is to be created without an underlying stream. - * @param charsetName charset name. - * @since 1.26.0 + *

Note: This overload exists to support legacy constructors that did not declare + * {@link IOException}. For new constructors, prefer + * {@link #ArchiveInputStream(AbstractArchiveBuilder)} and propagate I/O errors to callers.

+ * + * @param inputStream The underlying input stream, or {@code null} if this instance is to be created without an underlying stream. + * @param builder The builder. + * @since 1.29.0 */ - protected ArchiveInputStream(final InputStream inputStream, final String charsetName) { - this(inputStream, Charsets.toCharset(charsetName)); + protected ArchiveInputStream(final InputStream inputStream, final AbstractArchiveBuilder builder) { + super(inputStream); + this.charset = builder.getCharset(); + this.maxEntryNameLength = builder.getMaxEntryNameLength(); } /** @@ -229,6 +229,16 @@ public int getCount() { return (int) bytesRead; } + /** + * Gets the maximum length of an archive entry name. + * + * @return The maximum length of an archive entry name. + * @since 1.29.0 + */ + protected int getMaxEntryNameLength() { + return maxEntryNameLength; + } + /** * Gets the next Archive Entry in this Stream. * diff --git a/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java index 9423d8a6407..40fdedaea26 100644 --- a/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java @@ -25,6 +25,8 @@ import java.util.Arrays; import java.util.regex.Pattern; +import org.apache.commons.compress.MemoryLimitException; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.ArchiveInputStream; import org.apache.commons.compress.utils.ArchiveUtils; @@ -52,7 +54,7 @@ public class ArArchiveInputStream extends ArchiveInputStream { * * @since 1.29.0 */ - public static final class Builder extends AbstractBuilder { + public static final class Builder extends AbstractArchiveBuilder { private Builder() { setCharset(StandardCharsets.US_ASCII); @@ -167,7 +169,7 @@ public static boolean matches(final byte[] buffer, final int ignored) { private final byte[] metaData = new byte[NAME_LEN + LAST_MODIFIED_LEN + USER_ID_LEN + GROUP_ID_LEN + FILE_MODE_LEN + LENGTH_LEN]; private ArArchiveInputStream(final Builder builder) throws IOException { - this(builder.getInputStream(), builder); + super(builder); } /** @@ -180,7 +182,7 @@ public ArArchiveInputStream(final InputStream inputStream) { } private ArArchiveInputStream(final InputStream inputStream, final Builder builder) { - super(inputStream, builder.getCharset()); + super(inputStream, builder); } private int asInt(final byte[] byteArray, final int offset, final int len, final boolean treatBlankAsZero) throws IOException { @@ -244,7 +246,8 @@ public void close() throws IOException { * @since 1.3 */ private String getBSDLongName(final String bsdLongName) throws IOException { - final int nameLen = ParsingUtils.parseIntValue(bsdLongName.substring(BSD_LONGNAME_PREFIX_LEN)); + final int nameLen = + checkEntryNameLength(ParsingUtils.parseIntValue(bsdLongName.substring(BSD_LONGNAME_PREFIX_LEN))); final byte[] name = IOUtils.readRange(in, nameLen); final int read = name.length; count(read); @@ -276,7 +279,7 @@ private String getExtendedName(final int offset) throws IOException { } // Check there is a something to return, otherwise break out of the loop if (i > offset) { - return ArchiveUtils.toAsciiString(namebuffer, offset, i - offset); + return ArchiveUtils.toAsciiString(namebuffer, offset, checkEntryNameLength(i - offset)); } break; } @@ -284,6 +287,10 @@ private String getExtendedName(final int offset) throws IOException { throw new ArchiveException("Failed to read GNU long file name at offset " + offset); } + private int checkEntryNameLength(final int nameLength) throws ArchiveException, MemoryLimitException { + return ArchiveUtils.checkEntryNameLength(nameLength, getMaxEntryNameLength(), "AR"); + } + /** * Returns the next AR entry in this stream. * diff --git a/src/main/java/org/apache/commons/compress/archivers/arj/ArjArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/arj/ArjArchiveInputStream.java index 44aca37590a..3c7ca4df9ce 100644 --- a/src/main/java/org/apache/commons/compress/archivers/arj/ArjArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/arj/ArjArchiveInputStream.java @@ -27,9 +27,11 @@ import java.util.ArrayList; import java.util.zip.CRC32; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveEntry; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.ArchiveInputStream; +import org.apache.commons.compress.utils.ArchiveUtils; import org.apache.commons.compress.utils.IOUtils; import org.apache.commons.io.input.BoundedInputStream; import org.apache.commons.io.input.ChecksumInputStream; @@ -60,7 +62,7 @@ public class ArjArchiveInputStream extends ArchiveInputStream { * * @since 1.29.0 */ - public static final class Builder extends AbstractBuilder { + public static final class Builder extends AbstractArchiveBuilder { private Builder() { setCharset(ENCODING_NAME); @@ -117,7 +119,7 @@ public ArjArchiveInputStream(final InputStream inputStream) throws ArchiveExcept } private ArjArchiveInputStream(final InputStream inputStream, final Builder builder) throws ArchiveException { - super(new DataInputStream(inputStream), builder.getCharset()); + super(new DataInputStream(inputStream), builder); dis = (DataInputStream) in; try { mainHeader = readMainHeader(); @@ -314,8 +316,8 @@ private LocalFileHeader readLocalFileHeader() throws IOException { readExtraData(firstHeaderSize, firstHeader, localFileHeader); - localFileHeader.name = readString(basicHeader); - localFileHeader.comment = readString(basicHeader); + localFileHeader.name = readEntryName(basicHeader); + localFileHeader.comment = readComment(basicHeader); final ArrayList extendedHeaders = new ArrayList<>(); int extendedHeaderSize; @@ -374,8 +376,8 @@ private MainHeader readMainHeader() throws IOException { firstHeader.readUnsignedByte(); } - header.name = readString(basicHeader); - header.comment = readString(basicHeader); + header.name = readEntryName(basicHeader); + header.comment = readComment(basicHeader); final int extendedHeaderSize = read16(dis); if (extendedHeaderSize > 0) { @@ -400,13 +402,23 @@ private byte[] readRange(final InputStream in, final int len) throws IOException return b; } - private String readString(final DataInputStream dataIn) throws IOException { + private String readComment(DataInputStream dataIn) throws IOException { + return new String(readString(dataIn).toByteArray(), getCharset()); + } + + private String readEntryName(DataInputStream dataIn) throws IOException { + final ByteArrayOutputStream buffer = readString(dataIn); + ArchiveUtils.checkEntryNameLength(buffer.size(), getMaxEntryNameLength(), "ARJ"); + return new String(buffer.toByteArray(), getCharset()); + } + + private ByteArrayOutputStream readString(DataInputStream dataIn) throws IOException { try (ByteArrayOutputStream buffer = new ByteArrayOutputStream()) { int nextByte; while ((nextByte = dataIn.readUnsignedByte()) != 0) { buffer.write(nextByte); } - return buffer.toString(getCharset().name()); + return buffer; } } } diff --git a/src/main/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStream.java index d996954072c..03fd0613bdb 100644 --- a/src/main/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStream.java @@ -22,6 +22,7 @@ import java.io.IOException; import java.io.InputStream; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.ArchiveInputStream; import org.apache.commons.compress.archivers.zip.ZipEncoding; @@ -79,7 +80,7 @@ public class CpioArchiveInputStream extends ArchiveInputStream * * @since 1.29.0 */ - public static final class Builder extends AbstractBuilder { + public static final class Builder extends AbstractArchiveBuilder { private int blockSize = BLOCK_SIZE; @@ -211,7 +212,7 @@ public CpioArchiveInputStream(final InputStream in) { } private CpioArchiveInputStream(final InputStream in, final Builder builder) { - super(in, builder.getCharset()); + super(in, builder); if (builder.blockSize <= 0) { throw new IllegalArgumentException("blockSize must be bigger than 0"); } @@ -423,9 +424,10 @@ private long readBinaryLong(final int length, final boolean swapHalfWord) throws return CpioUtil.byteArray2long(tmp, swapHalfWord); } - private String readCString(final int length) throws IOException { + private String readEntryName(int lengthWithNull) throws IOException { + final int length = ArchiveUtils.checkEntryNameLength(lengthWithNull - 1, getMaxEntryNameLength(), "CPIO"); // don't include trailing NUL in file name to decode - final byte[] tmpBuffer = readRange(length - 1); + final byte[] tmpBuffer = readRange(length); if (in.read() == -1) { throw new EOFException(); } @@ -470,7 +472,7 @@ private CpioArchiveEntry readNewEntry(final boolean hasCrc) throws IOException { throw new ArchiveException("Found illegal entry with negative name length"); } newEntry.setChksum(readAsciiLong(8, 16)); - final String name = readCString(ArchiveException.toIntExact(namesize)); + final String name = readEntryName(ArchiveException.toIntExact(namesize)); newEntry.setName(name); if (CpioUtil.fileType(mode) == 0 && !name.equals(CPIO_TRAILER)) { throw new ArchiveException( @@ -504,7 +506,7 @@ private CpioArchiveEntry readOldAsciiEntry() throws IOException { if (ret.getSize() < 0) { throw new ArchiveException("Found illegal entry with negative length"); } - final String name = readCString(ArchiveException.toIntExact(nameSize)); + final String name = readEntryName(ArchiveException.toIntExact(nameSize)); ret.setName(name); if (CpioUtil.fileType(mode) == 0 && !name.equals(CPIO_TRAILER)) { throw new ArchiveException( @@ -534,7 +536,7 @@ private CpioArchiveEntry readOldBinaryEntry(final boolean swapHalfWord) throws I if (oldEntry.getSize() < 0) { throw new ArchiveException("Found illegal entry with negative length"); } - final String name = readCString(ArchiveException.toIntExact(nameSize)); + final String name = readEntryName(ArchiveException.toIntExact(nameSize)); oldEntry.setName(name); if (CpioUtil.fileType(mode) == 0 && !name.equals(CPIO_TRAILER)) { throw new ArchiveException( diff --git a/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java index 5bf0b12021d..4a492cf6df3 100644 --- a/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java @@ -29,10 +29,13 @@ import java.util.Queue; import java.util.Stack; +import org.apache.commons.compress.MemoryLimitException; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.ArchiveInputStream; import org.apache.commons.compress.archivers.zip.ZipEncoding; import org.apache.commons.compress.archivers.zip.ZipEncodingHelper; +import org.apache.commons.compress.utils.ArchiveUtils; import org.apache.commons.compress.utils.IOUtils; /** @@ -60,7 +63,7 @@ public class DumpArchiveInputStream extends ArchiveInputStream * * @since 1.29.0 */ - public static final class Builder extends AbstractBuilder { + public static final class Builder extends AbstractArchiveBuilder { private Builder() { } @@ -153,7 +156,7 @@ public DumpArchiveInputStream(final InputStream is) throws ArchiveException { } private DumpArchiveInputStream(final InputStream is, final Builder builder) throws ArchiveException { - super(is, builder.getCharset()); + super(is, builder); this.raw = new TapeInputStream(is); this.hasHitEOF = false; this.zipEncoding = ZipEncodingHelper.getZipEncoding(builder.getCharset()); @@ -252,7 +255,7 @@ public DumpArchiveEntry getNextEntry() throws IOException { // is there anything in the queue? if (!queue.isEmpty()) { - return queue.remove(); + return checkEntry(queue.remove()); } while (entry == null) { @@ -335,7 +338,7 @@ public DumpArchiveEntry getNextEntry() throws IOException { entry.setSimpleName(names.get(entry.getIno()).getName()); entry.setOffset(filepos); - return entry; + return checkEntry(entry); } /** @@ -547,7 +550,8 @@ private void readDirectoryEntry(DumpArchiveEntry entry) throws IOException { final byte type = blockBuffer[i + 6]; - final String name = DumpArchiveUtil.decode(zipEncoding, blockBuffer, i + 8, blockBuffer[i + 7]); + final String name = + DumpArchiveUtil.decode(zipEncoding, blockBuffer, i + 8, Byte.toUnsignedInt(blockBuffer[i + 7])); if (CURRENT_PATH_SEGMENT.equals(name) || PARENT_PATH_SEGMENT.equals(name)) { // do nothing... @@ -590,4 +594,8 @@ private void readDirectoryEntry(DumpArchiveEntry entry) throws IOException { } } + private DumpArchiveEntry checkEntry(DumpArchiveEntry entry) throws ArchiveException, MemoryLimitException { + ArchiveUtils.checkEntryNameLength(entry.getName().length(), getMaxEntryNameLength(), "DUMP"); + return entry; + } } diff --git a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java index 28dfddb274a..68fbfae3b13 100644 --- a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java @@ -51,12 +51,13 @@ import java.util.zip.CheckedInputStream; import org.apache.commons.compress.MemoryLimitException; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveException; +import org.apache.commons.compress.utils.ArchiveUtils; import org.apache.commons.compress.utils.IOUtils; import org.apache.commons.compress.utils.InputStreamStatistics; import org.apache.commons.compress.utils.SeekableInMemoryByteChannel; import org.apache.commons.io.build.AbstractOrigin.ByteArrayOrigin; -import org.apache.commons.io.build.AbstractStreamBuilder; import org.apache.commons.io.input.BoundedInputStream; import org.apache.commons.io.input.ChecksumInputStream; import org.apache.commons.lang3.ArrayUtils; @@ -178,7 +179,7 @@ public String toString() { * * @since 1.26.0 */ - public static class Builder extends AbstractStreamBuilder { + public static class Builder extends AbstractArchiveBuilder { static final int MEMORY_LIMIT_KIB = Integer.MAX_VALUE; static final boolean USE_DEFAULTNAME_FOR_UNNAMED_ENTRIES = false; @@ -218,7 +219,7 @@ public SevenZFile get() throws IOException { } final boolean closeOnError = seekableByteChannel != null; return new SevenZFile(actualChannel, actualDescription, password, closeOnError, maxMemoryLimitKiB, useDefaultNameForUnnamedEntries, - tryToRecoverBrokenArchives); + tryToRecoverBrokenArchives, getMaxEntryNameLength()); } /** @@ -486,6 +487,8 @@ public static int toNonNegativeInt(final String description, final long value) t private final boolean tryToRecoverBrokenArchives; + private final int maxEntryNameLength; + /** * Reads a file as unencrypted 7z archive. * @@ -677,14 +680,23 @@ public SevenZFile(final SeekableByteChannel channel, final String fileName, fina this(channel, fileName, password, false, SevenZFileOptions.DEFAULT); } - private SevenZFile(final SeekableByteChannel channel, final String fileName, final byte[] password, final boolean closeOnError, final int maxMemoryLimitKiB, - final boolean useDefaultNameForUnnamedEntries, final boolean tryToRecoverBrokenArchives) throws IOException { + private SevenZFile( + final SeekableByteChannel channel, + final String fileName, + final byte[] password, + final boolean closeOnError, + final int maxMemoryLimitKiB, + final boolean useDefaultNameForUnnamedEntries, + final boolean tryToRecoverBrokenArchives, + final int maxEntryNameLength) + throws IOException { boolean succeeded = false; this.channel = channel; this.fileName = fileName; this.maxMemoryLimitKiB = maxMemoryLimitKiB; this.useDefaultNameForUnnamedEntries = useDefaultNameForUnnamedEntries; this.tryToRecoverBrokenArchives = tryToRecoverBrokenArchives; + this.maxEntryNameLength = maxEntryNameLength; try { archive = readHeaders(password); if (password != null) { @@ -717,7 +729,7 @@ private SevenZFile(final SeekableByteChannel channel, final String fileName, fin private SevenZFile(final SeekableByteChannel channel, final String fileName, final byte[] password, final boolean closeOnError, final SevenZFileOptions options) throws IOException { this(channel, fileName, password, closeOnError, options.getMaxMemoryLimitInKb(), options.getUseDefaultNameForUnnamedEntries(), - options.getTryToRecoverBrokenArchives()); + options.getTryToRecoverBrokenArchives(), Short.MAX_VALUE); } /** @@ -1353,7 +1365,10 @@ private void readFilesInfo(final ByteBuffer header, final Archive archive) throw for (int i = 0; i < namesLength; i += 2) { if (names[i] == 0 && names[i + 1] == 0) { computeIfAbsent(fileMap, nextFile); - fileMap.get(nextFile).setName(new String(names, nextName, i - nextName, UTF_16LE)); + // Entry name length in UTF-16LE characters (not bytes) + final int entryNameLength = + ArchiveUtils.checkEntryNameLength((i - nextName) / 2, maxEntryNameLength, "7z"); + fileMap.get(nextFile).setName(new String(names, nextName, 2 * entryNameLength, UTF_16LE)); nextName = i + 2; nextFile++; } diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/AbstractTarBuilder.java b/src/main/java/org/apache/commons/compress/archivers/tar/AbstractTarBuilder.java index 5555f5ccc2b..0f471a1ca1f 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/AbstractTarBuilder.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/AbstractTarBuilder.java @@ -19,7 +19,7 @@ package org.apache.commons.compress.archivers.tar; -import org.apache.commons.io.build.AbstractStreamBuilder; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; /** * Abstracts TAR builder operations. @@ -28,7 +28,7 @@ * @param the type of builder subclass. * @since 1.29.0 */ -public abstract class AbstractTarBuilder> extends AbstractStreamBuilder { +public abstract class AbstractTarBuilder> extends AbstractArchiveBuilder { private int blockSize = TarConstants.DEFAULT_BLKSIZE; private int recordSize = TarConstants.DEFAULT_RCDSIZE; diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java index 80dd6859fb1..6f314098304 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java @@ -25,6 +25,7 @@ package org.apache.commons.compress.archivers.tar; import java.io.ByteArrayOutputStream; +import java.io.EOFException; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; @@ -204,7 +205,7 @@ public TarArchiveInputStream(final InputStream inputStream, final boolean lenien } private TarArchiveInputStream(final InputStream inputStream, final Builder builder) { - super(inputStream, builder.getCharset()); + super(inputStream, builder); this.zipEncoding = ZipEncodingHelper.getZipEncoding(builder.getCharset()); this.recordBuffer = new byte[builder.getRecordSize()]; this.blockSize = builder.getBlockSize(); @@ -512,7 +513,15 @@ public TarArchiveEntry getNextEntry() throws IOException { lastWasSpecial = TarUtils.isSpecialTarRecord(currEntry); if (lastWasSpecial) { // Handle PAX, GNU long name, or other special records - TarUtils.handleSpecialTarRecord(this, zipEncoding, currEntry, paxHeaders, sparseHeaders, globalPaxHeaders, globalSparseHeaders); + TarUtils.handleSpecialTarRecord( + this, + zipEncoding, + getMaxEntryNameLength(), + currEntry, + paxHeaders, + sparseHeaders, + globalPaxHeaders, + globalSparseHeaders); } } while (lastWasSpecial); // Apply global and local PAX headers @@ -660,7 +669,7 @@ public int read(final byte[] buf, final int offset, int numToRead) throws IOExce } if (totalRead == -1) { if (numToRead > 0) { - throw new ArchiveException("Truncated TAR archive"); + throw new EOFException("Truncated TAR archive"); } setAtEOF(true); } else { diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java index 9ebb6c1d6e1..3649320c04b 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java @@ -19,6 +19,7 @@ package org.apache.commons.compress.archivers.tar; import java.io.Closeable; +import java.io.EOFException; import java.io.File; import java.io.IOException; import java.io.InputStream; @@ -65,7 +66,7 @@ private final class BoundedTarEntryInputStream extends BoundedArchiveInputStream BoundedTarEntryInputStream(final TarArchiveEntry entry, final SeekableByteChannel channel) throws IOException { super(entry.getDataOffset(), entry.getRealSize()); if (channel.size() - entry.getSize() < entry.getDataOffset()) { - throw new ArchiveException("Entry size exceeds archive size"); + throw new EOFException("Truncated TAR archive: entry size exceeds archive size"); } this.entry = entry; this.channel = channel; @@ -84,7 +85,7 @@ protected int read(final long pos, final ByteBuffer buf) throws IOException { } if (totalRead == -1) { if (buf.array().length > 0) { - throw new ArchiveException("Truncated TAR archive"); + throw new EOFException("Truncated TAR archive"); } setAtEOF(true); } else { @@ -233,6 +234,8 @@ public static Builder builder() { private final Map> sparseInputStreams = new HashMap<>(); + private final int maxEntryNameLength; + private TarFile(final Builder builder) throws IOException { this.archive = builder.channel != null ? builder.channel : Files.newByteChannel(builder.getPath()); this.zipEncoding = ZipEncodingHelper.getZipEncoding(builder.getCharset()); @@ -240,6 +243,7 @@ private TarFile(final Builder builder) throws IOException { this.recordBuffer = ByteBuffer.allocate(this.recordSize); this.blockSize = builder.getBlockSize(); this.lenient = builder.isLenient(); + this.maxEntryNameLength = builder.getMaxEntryNameLength(); forEach(entries::add); } @@ -507,7 +511,14 @@ private TarArchiveEntry getNextTarEntry() throws IOException { lastWasSpecial = TarUtils.isSpecialTarRecord(currEntry); if (lastWasSpecial) { // Handle PAX, GNU long name, or other special records - TarUtils.handleSpecialTarRecord(getInputStream(currEntry), zipEncoding, currEntry, paxHeaders, sparseHeaders, globalPaxHeaders, + TarUtils.handleSpecialTarRecord( + getInputStream(currEntry), + zipEncoding, + maxEntryNameLength, + currEntry, + paxHeaders, + sparseHeaders, + globalPaxHeaders, globalSparseHeaders); } } while (lastWasSpecial); diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java index 3938ce2f3ba..b121d6f7c35 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java @@ -18,6 +18,7 @@ */ package org.apache.commons.compress.archivers.tar; +import java.io.EOFException; import java.io.IOException; import java.io.InputStream; import java.io.UncheckedIOException; @@ -33,15 +34,14 @@ import java.util.Map; import java.util.regex.Pattern; +import org.apache.commons.compress.MemoryLimitException; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.zip.ZipEncoding; import org.apache.commons.compress.archivers.zip.ZipEncodingHelper; import org.apache.commons.compress.utils.ArchiveUtils; import org.apache.commons.compress.utils.IOUtils; import org.apache.commons.compress.utils.ParsingUtils; -import org.apache.commons.io.input.BoundedInputStream; import org.apache.commons.io.output.ByteArrayOutputStream; -import org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream; /** * This class provides static utility methods to work with byte streams. @@ -354,6 +354,7 @@ public static void formatUnsignedOctalString(final long value, final byte[] buff * * @param input the input stream from which to read the special tar entry content. * @param encoding the encoding to use for reading names. + * @param maxEntryNameLength the maximum allowed length for entry names. * @param entry the tar entry to handle. * @param paxHeaders the map to update with PAX headers. * @param sparseHeaders the list to update with sparse headers. @@ -361,27 +362,36 @@ public static void formatUnsignedOctalString(final long value, final byte[] buff * @param globalSparseHeaders the list to update with global sparse headers. * @throws IOException if an I/O error occurs while reading the entry. */ - static void handleSpecialTarRecord(final InputStream input, final ZipEncoding encoding, final TarArchiveEntry entry, final Map paxHeaders, - final List sparseHeaders, final Map globalPaxHeaders, - final List globalSparseHeaders) throws IOException { + static void handleSpecialTarRecord( + final InputStream input, + final ZipEncoding encoding, + final int maxEntryNameLength, + final TarArchiveEntry entry, + final Map paxHeaders, + final List sparseHeaders, + final Map globalPaxHeaders, + final List globalSparseHeaders) + throws IOException { if (entry.isGNULongLinkEntry()) { // GNU long link entry: read and store the link path - final String longLinkName = readLongName(input, encoding, entry); + final String longLinkName = readLongName(input, encoding, maxEntryNameLength, entry); paxHeaders.put("linkpath", longLinkName); } else if (entry.isGNULongNameEntry()) { // GNU long name entry: read and store the file path - final String longName = readLongName(input, encoding, entry); + final String longName = readLongName(input, encoding, maxEntryNameLength, entry); paxHeaders.put("path", longName); } else if (entry.isGlobalPaxHeader()) { // Global PAX header: clear and update global PAX and sparse headers globalSparseHeaders.clear(); globalPaxHeaders.clear(); - globalPaxHeaders.putAll(parsePaxHeaders(input, globalSparseHeaders, globalPaxHeaders, entry.getSize())); + globalPaxHeaders.putAll( + parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, globalSparseHeaders)); } else if (entry.isPaxHeader()) { // PAX header: clear and update local PAX and sparse headers, parse GNU sparse headers if present sparseHeaders.clear(); paxHeaders.clear(); - paxHeaders.putAll(parsePaxHeaders(input, sparseHeaders, globalPaxHeaders, entry.getSize())); + paxHeaders.putAll( + parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, sparseHeaders)); if (paxHeaders.containsKey(TarGnuSparseKeys.MAP)) { sparseHeaders.addAll(parseFromPAX01SparseHeaders(paxHeaders.get(TarGnuSparseKeys.MAP))); } @@ -709,7 +719,7 @@ protected static List parsePAX1XSparseHeaders(final Inpu @Deprecated protected static Map parsePaxHeaders(final InputStream inputStream, final List sparseHeaders, final Map globalPaxHeaders) throws IOException { - return parsePaxHeaders(inputStream, sparseHeaders, globalPaxHeaders, -1); + return parsePaxHeaders(inputStream, globalPaxHeaders, -1, Short.MAX_VALUE, sparseHeaders); } /** @@ -731,7 +741,7 @@ protected static Map parsePaxHeaders(final InputStream inputStre *

* * @param inputStream input stream to read keys and values - * @param sparseHeaders used in PAX Format 0.0 & 0.1, as it may appear multiple times, the sparse headers need to be stored in an array, not a map + * @param sparseHeaders used in PAX Format 0.0, as it may appear multiple times, the sparse headers need to be stored in an array, not a map * @param globalPaxHeaders global PAX headers of the tar archive * @param headerSize total size of the PAX header, will be ignored if negative * @return map of PAX headers values found inside the current (local or global) PAX headers tar entry. @@ -740,6 +750,42 @@ protected static Map parsePaxHeaders(final InputStream inputStre */ protected static Map parsePaxHeaders(final InputStream inputStream, final List sparseHeaders, final Map globalPaxHeaders, final long headerSize) throws IOException { + return parsePaxHeaders(inputStream, globalPaxHeaders, headerSize, Short.MAX_VALUE, sparseHeaders); + } + + /** + * Parses and processes the contents of a PAX header block. + * + *

This method reads key–value pairs from the given input stream, applies + * them to the provided global PAX headers, and performs additional handling:

+ * + *
    + *
  • Validates that entry path lengths do not exceed the specified maximum.
    • + *
  • Extracts GNU sparse headers (format 0.0) if present, adding them to the + * {@code sparseHeaders} list. These headers may occur multiple times and + * do not follow the key–value format of standard PAX entries.
    • + *
+ * + * @param inputStream The input stream providing PAX header data + * @param globalPaxHeaders The global PAX headers of the tar archive + * @param headerSize The total size of the PAX header block; ignored if negative + * @param maxEntryPathLength The maximum permitted length for entry paths + * @param sparseHeaders Output list to collect any GNU sparse 0.0 headers found + * @return A map of PAX headers merged with the supplied global headers + * @throws EOFException If the stream ends unexpectedly + * @throws MemoryLimitException If the headers exceed memory limits + * @throws ArchiveException If a header is malformed or contains invalid data + * @throws IOException If an I/O error occurs while reading + */ + private static Map parsePaxHeaders( + final InputStream inputStream, + final Map globalPaxHeaders, + final long headerSize, + final int maxEntryPathLength, + final List sparseHeaders) + throws IOException { + // Check if there is enough memory to store the headers + MemoryLimitException.checkBytes(headerSize, Long.MAX_VALUE); final Map headers = new HashMap<>(globalPaxHeaders); Long offset = null; // Format is "length keyword=value\n"; @@ -767,15 +813,24 @@ protected static Map parsePaxHeaders(final InputStream inputStre final String keyword = coll.toString(StandardCharsets.UTF_8); // Get rest of entry final int restLen = len - read; + + // Validate entry length + // 1. Ignore empty keywords if (restLen <= 1) { // only NL headers.remove(keyword); + // 2. Entry length exceeds header size } else if (headerSize >= 0 && restLen > headerSize - totalRead) { throw new ArchiveException("PAX header value size %,d exceeds size of header record.", restLen); } else { + // 3. Entry length exceeds configurable file and link name limits + if ("path".equals(keyword) || "linkpath".equals(keyword)) { + ArchiveUtils.checkEntryNameLength(restLen - 1, maxEntryPathLength, "TAR"); + } final byte[] rest = IOUtils.readRange(inputStream, restLen); final int got = rest.length; if (got != restLen) { - throw new ArchiveException("Failed to read PAX header: Expected %,d bytes, read %,d.", restLen, got); + throw new EOFException(String.format( + "Failed to read PAX header: Expected %,d bytes, read %,d.", restLen, got)); } totalRead += restLen; // Drop trailing NL @@ -888,30 +943,23 @@ private static long[] readLineOfNumberForPax1x(final InputStream inputStream) th * @throws IOException if an I/O error occurs or the entry is truncated. * @throws ArchiveException if the entry size is invalid. */ - static String readLongName(final InputStream input, final ZipEncoding encoding, final TarArchiveEntry entry) + static String readLongName( + final InputStream input, + final ZipEncoding encoding, + final int maxEntryNameLength, + final TarArchiveEntry entry) throws IOException { - final long size = entry.getSize(); - // The encoding requires a byte array, whose size must be a positive int. - if (size > Integer.MAX_VALUE) { - throw new ArchiveException("Invalid long name entry: size %,d exceeds maximum allowed.", entry.getSize()); - } - // Read the long name incrementally to limit memory allocation in case of a corrupted entry. - final BoundedInputStream boundedInput = BoundedInputStream.builder() - .setInputStream(input) - .setMaxCount(size) - .setPropagateClose(false) - .get(); - final UnsynchronizedByteArrayOutputStream outputStream = UnsynchronizedByteArrayOutputStream.builder().get(); - final long read = org.apache.commons.io.IOUtils.copyLarge(boundedInput, outputStream); - if (read != size) { - throw new ArchiveException("Truncated long name entry: expected %,d bytes, read %,d bytes.", size, read); - } - final byte[] name = outputStream.toByteArray(); - int length = name.length; - while (length > 0 && name[length - 1] == 0) { - length--; - } - return encoding.decode(Arrays.copyOf(name, length)); + final int declaredLength = ArchiveUtils.checkEntryNameLength(entry.getSize(), maxEntryNameLength, "TAR"); + final byte[] name = IOUtils.readRange(input, declaredLength); + int actualLength = name.length; + if (actualLength != declaredLength) { + throw new EOFException(String.format( + "Truncated long name entry: expected %,d bytes, read %,d bytes.", declaredLength, actualLength)); + } + while (actualLength > 0 && name[actualLength - 1] == 0) { + actualLength--; + } + return encoding.decode(Arrays.copyOf(name, actualLength)); } /** diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java index d02e625688a..555f10465af 100644 --- a/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java @@ -42,6 +42,7 @@ import java.util.zip.ZipException; import org.apache.commons.compress.MemoryLimitException; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveEntry; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.ArchiveInputStream; @@ -85,7 +86,7 @@ public class ZipArchiveInputStream extends ArchiveInputStream i * @since 1.29.0 */ public abstract static class AbstractBuilder> - extends ArchiveInputStream.AbstractBuilder { + extends AbstractArchiveBuilder { private boolean useUnicodeExtraFields = true; private boolean supportStoredEntryDataDescriptor; @@ -421,7 +422,7 @@ public ZipArchiveInputStream(final InputStream inputStream) { } private ZipArchiveInputStream(final InputStream inputStream, final AbstractBuilder builder) { - super(inputStream, builder.getCharset()); + super(inputStream, builder); this.in = new PushbackInputStream(inputStream, buf.capacity()); this.zipEncoding = ZipEncodingHelper.getZipEncoding(builder.getCharset()); this.useUnicodeExtraFields = builder.isUseUnicodeExtraFields(); @@ -861,7 +862,8 @@ public ZipArchiveEntry getNextZipEntry() throws IOException { } else { off += 3 * WORD; } - final int fileNameLen = ZipShort.getValue(lfhBuf, off); + final int fileNameLen = + ArchiveUtils.checkEntryNameLength(ZipShort.getValue(lfhBuf, off), getMaxEntryNameLength(), "ZIP"); off += SHORT; final int extraLen = ZipShort.getValue(lfhBuf, off); final byte[] fileName = readRange(fileNameLen); diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java index 3e28361c33d..2c154636e3a 100644 --- a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java @@ -51,12 +51,14 @@ import java.util.zip.Inflater; import java.util.zip.ZipException; +import org.apache.commons.compress.archivers.AbstractArchiveBuilder; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.compress.archivers.EntryStreamOffsets; import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream; import org.apache.commons.compress.compressors.deflate64.Deflate64CompressorInputStream; import org.apache.commons.compress.compressors.xz.XZCompressorInputStream; import org.apache.commons.compress.compressors.zstandard.ZstdCompressorInputStream; +import org.apache.commons.compress.utils.ArchiveUtils; import org.apache.commons.compress.utils.BoundedArchiveInputStream; import org.apache.commons.compress.utils.BoundedSeekableByteChannelInputStream; import org.apache.commons.compress.utils.IOUtils; @@ -65,7 +67,6 @@ import org.apache.commons.io.Charsets; import org.apache.commons.io.FilenameUtils; import org.apache.commons.io.build.AbstractOrigin.ByteArrayOrigin; -import org.apache.commons.io.build.AbstractStreamBuilder; import org.apache.commons.io.function.IOFunction; import org.apache.commons.io.function.IOStream; import org.apache.commons.io.input.BoundedInputStream; @@ -132,7 +133,7 @@ protected int read(final long pos, final ByteBuffer buf) throws IOException { * * @since 1.26.0 */ - public static class Builder extends AbstractStreamBuilder { + public static class Builder extends AbstractArchiveBuilder { static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8; private SeekableByteChannel seekableByteChannel; @@ -169,8 +170,15 @@ public ZipFile get() throws IOException { actualDescription = path.toString(); } final boolean closeOnError = seekableByteChannel != null; - return new ZipFile(actualChannel, actualDescription, getCharset(), useUnicodeExtraFields, closeOnError, ignoreLocalFileHeader, - zstdInputStreamFactory); + return new ZipFile( + actualChannel, + actualDescription, + getCharset(), + useUnicodeExtraFields, + closeOnError, + ignoreLocalFileHeader, + zstdInputStreamFactory, + getMaxEntryNameLength()); } /** @@ -751,6 +759,8 @@ private static boolean tryToLocateSignature(final SeekableByteChannel channel, f private long firstLocalFileHeaderOffset; + private final int maxEntryNameLength; + /** * Opens the given file for reading, assuming "UTF8" for file names. * @@ -811,7 +821,15 @@ public ZipFile(final File file, final String encoding, final boolean useUnicodeE @Deprecated @SuppressWarnings("resource") // Caller closes public ZipFile(final File file, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this(newReadByteChannel(file.toPath()), file.getAbsolutePath(), encoding, useUnicodeExtraFields, true, ignoreLocalFileHeader); + this( + newReadByteChannel(file.toPath()), + file.getAbsolutePath(), + Charsets.toCharset(encoding), + useUnicodeExtraFields, + true, + ignoreLocalFileHeader, + null, + Short.MAX_VALUE); } /** @@ -877,7 +895,15 @@ public ZipFile(final Path path, final String encoding, final boolean useUnicodeE @SuppressWarnings("resource") // Caller closes @Deprecated public ZipFile(final Path path, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this(newReadByteChannel(path), path.toAbsolutePath().toString(), encoding, useUnicodeExtraFields, true, ignoreLocalFileHeader); + this( + newReadByteChannel(path), + path.toAbsolutePath().toString(), + Charsets.toCharset(encoding), + useUnicodeExtraFields, + true, + ignoreLocalFileHeader, + null, + Short.MAX_VALUE); } /** @@ -913,14 +939,23 @@ public ZipFile(final SeekableByteChannel channel, final String encoding) throws this(channel, "a SeekableByteChannel", encoding, true); } - private ZipFile(final SeekableByteChannel channel, final String channelDescription, final Charset encoding, final boolean useUnicodeExtraFields, - final boolean closeOnError, final boolean ignoreLocalFileHeader, final IOFunction zstdInputStream) throws IOException { + private ZipFile( + final SeekableByteChannel channel, + final String channelDescription, + final Charset encoding, + final boolean useUnicodeExtraFields, + final boolean closeOnError, + final boolean ignoreLocalFileHeader, + final IOFunction zstdInputStream, + final int maxEntryNameLength) + throws IOException { this.isSplitZipArchive = channel instanceof ZipSplitReadOnlySeekableByteChannel; this.encoding = Charsets.toCharset(encoding, Builder.DEFAULT_CHARSET); this.zipEncoding = ZipEncodingHelper.getZipEncoding(encoding); this.useUnicodeExtraFields = useUnicodeExtraFields; this.archive = channel; this.zstdInputStreamFactory = zstdInputStream; + this.maxEntryNameLength = maxEntryNameLength; boolean success = false; try { final Map entriesWithoutUTF8Flag = populateFromCentralDirectory(); @@ -929,6 +964,8 @@ private ZipFile(final SeekableByteChannel channel, final String channelDescripti } fillNameMap(); success = true; + } catch (final ArchiveException e) { + throw e; } catch (final IOException e) { throw new ArchiveException("Error reading Zip content from " + channelDescription, (Throwable) e); } finally { @@ -956,7 +993,15 @@ private ZipFile(final SeekableByteChannel channel, final String channelDescripti @Deprecated public ZipFile(final SeekableByteChannel channel, final String channelDescription, final String encoding, final boolean useUnicodeExtraFields) throws IOException { - this(channel, channelDescription, encoding, useUnicodeExtraFields, false, false); + this( + channel, + channelDescription, + Charsets.toCharset(encoding), + useUnicodeExtraFields, + false, + false, + null, + Short.MAX_VALUE); } /** @@ -984,12 +1029,15 @@ public ZipFile(final SeekableByteChannel channel, final String channelDescriptio @Deprecated public ZipFile(final SeekableByteChannel channel, final String channelDescription, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this(channel, channelDescription, encoding, useUnicodeExtraFields, false, ignoreLocalFileHeader); - } - - private ZipFile(final SeekableByteChannel channel, final String channelDescription, final String encoding, final boolean useUnicodeExtraFields, - final boolean closeOnError, final boolean ignoreLocalFileHeader) throws IOException { - this(channel, channelDescription, Charsets.toCharset(encoding), useUnicodeExtraFields, closeOnError, ignoreLocalFileHeader, null); + this( + channel, + channelDescription, + Charsets.toCharset(encoding), + useUnicodeExtraFields, + false, + ignoreLocalFileHeader, + null, + Short.MAX_VALUE); } /** @@ -1527,7 +1575,8 @@ private void readCentralDirectoryEntry(final Map maxEntryNameLength) { + throw new ArchiveException( + "Invalid %s archive entry: invalid file name length %,d (must be between 1 and %,d). " + + "If the file is not corrupt, consider increasing the `maxEntryNameLength` limit.", + archiveType, length, maxEntryNameLength); + } + MemoryLimitException.checkBytes(length, SOFT_MAX_ARRAY_LENGTH); + return (int) length; + } + /** * Tests whether true if the first N bytes of an array are all zero. * diff --git a/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java b/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java new file mode 100644 index 00000000000..43d17a2f797 --- /dev/null +++ b/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java @@ -0,0 +1,348 @@ +/* + * 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 + * + * https://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; + +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +import java.io.EOFException; +import java.io.IOException; +import java.util.Arrays; +import java.util.stream.Stream; + +import org.apache.commons.compress.AbstractTest; +import org.apache.commons.compress.MemoryLimitException; +import org.apache.commons.compress.archivers.ar.ArArchiveInputStream; +import org.apache.commons.compress.archivers.arj.ArjArchiveInputStream; +import org.apache.commons.compress.archivers.cpio.CpioArchiveInputStream; +import org.apache.commons.compress.archivers.dump.DumpArchiveEntry; +import org.apache.commons.compress.archivers.dump.DumpArchiveInputStream; +import org.apache.commons.compress.archivers.sevenz.SevenZFile; +import org.apache.commons.compress.archivers.tar.TarArchiveInputStream; +import org.apache.commons.compress.archivers.tar.TarFile; +import org.apache.commons.compress.archivers.zip.ZipArchiveEntry; +import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream; +import org.apache.commons.compress.archivers.zip.ZipFile; +import org.apache.commons.io.function.IOStream; +import org.apache.commons.lang3.StringUtils; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.Arguments; +import org.junit.jupiter.params.provider.MethodSource; +import org.junit.jupiter.params.provider.ValueSource; + +/** + * Tests handling of file names limits in various archive formats. + */ +public class MaxNameEntryLengthTest extends AbstractTest { + + private static final int PORTABLE_NAME_LIMIT = 1023; + private static final int SOFT_MAX_ARRAY_LENGTH = Integer.MAX_VALUE - 8; + + @SuppressWarnings("OctalInteger") + private static final int CPIO_OLD_ASCII_NAME_LIMIT = 0777_776; + + static Stream testTruncatedStreams() throws IOException { + return Stream.of( + Arguments.of( + ArArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/bsd-fail.ar")) + .get(), + SOFT_MAX_ARRAY_LENGTH), + Arguments.of( + ArArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/gnu-fail.ar")) + .get(), + SOFT_MAX_ARRAY_LENGTH), + Arguments.of( + CpioArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/odc-fail.cpio")) + .get(), + CPIO_OLD_ASCII_NAME_LIMIT), + Arguments.of( + CpioArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/newc-fail.cpio")) + .get(), + SOFT_MAX_ARRAY_LENGTH), + Arguments.of( + CpioArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/crc-fail.cpio")) + .get(), + SOFT_MAX_ARRAY_LENGTH), + Arguments.of( + TarArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/pax-fail.tar")) + .get(), + // The PAX entry length is the limiting factor: "2147483647 path=...\n" + Integer.MAX_VALUE), + Arguments.of( + TarArchiveInputStream.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/gnu-fail.tar")) + .get(), + SOFT_MAX_ARRAY_LENGTH)); + } + + @ParameterizedTest + @MethodSource + void testTruncatedStreams(final ArchiveInputStream archiveInputStream, final long expectedLength) { + // If the file name length exceeds available memory, the stream fails fast with MemoryLimitException. + // Otherwise, it fails with EOFException when the stream ends unexpectedly. + if (Runtime.getRuntime().totalMemory() < expectedLength) { + final MemoryLimitException exception = + assertThrows(MemoryLimitException.class, archiveInputStream::getNextEntry); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue( + message.contains(String.format("%,d", expectedLength)), + "Message mentions expected length (" + expectedLength + "): " + message); + } else { + assertThrows(EOFException.class, archiveInputStream::getNextEntry); + } + } + + static Stream testTruncatedTarFiles() throws IOException { + return Stream.of( + Arguments.of(TarFile.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/pax-fail.tar"))), + Arguments.of(TarFile.builder() + .setMaxEntryNameLength(Integer.MAX_VALUE) + .setURI(getURI("synthetic/long-name/gnu-fail.tar")))); + } + + @ParameterizedTest + @MethodSource + void testTruncatedTarFiles(final TarFile.Builder tarFileBuilder) { + // Since the real size of the archive is known, the truncation is detected + // much earlier and before trying to read file names. + assertThrows(EOFException.class, () -> tarFileBuilder.get().getEntries()); + } + + static Stream testValidStreams() throws IOException { + return Stream.of( + Arguments.of( + ArArchiveInputStream.builder().setURI(getURI("synthetic/long-name/bsd-short-max-value.ar")), + Short.MAX_VALUE), + Arguments.of( + ArArchiveInputStream.builder().setURI(getURI("synthetic/long-name/gnu-short-max-value.ar")), + Short.MAX_VALUE), + Arguments.of(ArjArchiveInputStream.builder().setURI(getURI("synthetic/long-name/long-name.arj")), 2568), + Arguments.of( + CpioArchiveInputStream.builder().setURI(getURI("synthetic/long-name/bin-big-endian.cpio")), + Short.MAX_VALUE - 1), + Arguments.of( + CpioArchiveInputStream.builder().setURI(getURI("synthetic/long-name/bin-little-endian.cpio")), + Short.MAX_VALUE - 1), + Arguments.of( + CpioArchiveInputStream.builder().setURI(getURI("synthetic/long-name/odc.cpio")), + Short.MAX_VALUE), + Arguments.of( + CpioArchiveInputStream.builder().setURI(getURI("synthetic/long-name/newc.cpio")), + Short.MAX_VALUE), + Arguments.of( + CpioArchiveInputStream.builder().setURI(getURI("synthetic/long-name/crc.cpio")), + Short.MAX_VALUE), + Arguments.of( + TarArchiveInputStream.builder().setURI(getURI("synthetic/long-name/pax.tar")), Short.MAX_VALUE), + Arguments.of( + TarArchiveInputStream.builder().setURI(getURI("synthetic/long-name/gnu.tar")), Short.MAX_VALUE), + Arguments.of( + ZipArchiveInputStream.builder().setURI(getURI("synthetic/long-name/long-name.zip")), + Short.MAX_VALUE)); + } + + @ParameterizedTest + @MethodSource + void testValidStreams(final AbstractArchiveBuilder, ?> builder, final int expectedLength) + throws IOException { + try (ArchiveInputStream archiveInputStream = builder.get()) { + final ArchiveEntry entry = archiveInputStream.getNextEntry(); + assertNotNull(entry); + final String name = entry.getName(); + assertEquals(expectedLength, name.length(), "Unexpected name length"); + final String expected = StringUtils.repeat("a", expectedLength); + assertEquals(expected, name); + } + // Impose a file name length limit and verify that it is enforced. + builder.setMaxEntryNameLength(PORTABLE_NAME_LIMIT); + try (ArchiveInputStream archiveInputStream = builder.get()) { + final ArchiveException exception = assertThrows(ArchiveException.class, archiveInputStream::getNextEntry); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue(message.contains("file name length")); + assertTrue(message.contains(String.format("%,d", expectedLength))); + } + } + + static Stream testValidTarFiles() throws IOException { + return Stream.of( + Arguments.of(TarFile.builder().setURI(getURI("synthetic/long-name/pax.tar")), Short.MAX_VALUE), + Arguments.of(TarFile.builder().setURI(getURI("synthetic/long-name/gnu.tar")), Short.MAX_VALUE)); + } + + @ParameterizedTest + @MethodSource + void testValidTarFiles(final TarFile.Builder tarFileBuilder, final int expectedLength) throws IOException { + try (TarFile tarFile = tarFileBuilder.get()) { + for (final ArchiveEntry entry : tarFile.getEntries()) { + assertNotNull(entry); + final String name = entry.getName(); + assertEquals(expectedLength, name.length(), "Unexpected name length"); + final String expected = StringUtils.repeat("a", expectedLength); + assertEquals(expected, name); + } + } + // Impose a file name length limit and verify that it is enforced. + tarFileBuilder.setMaxEntryNameLength(PORTABLE_NAME_LIMIT); + final ArchiveException exception = assertThrows(ArchiveException.class, () -> tarFileBuilder.get()); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue(message.contains("file name length")); + assertTrue(message.contains(String.format("%,d", expectedLength))); + } + + @Test + void testValidZipFile() throws IOException { + final ZipFile.Builder builder = ZipFile.builder().setURI(getURI("synthetic/long-name/long-name.zip")); + final int expectedLength = Short.MAX_VALUE; + try (ZipFile zipFile = builder.get(); + IOStream entries = zipFile.stream()) { + entries.forEach(entry -> { + assertNotNull(entry); + final String name = entry.getName(); + assertEquals(expectedLength, name.length(), "Unexpected name length"); + final String expected = StringUtils.repeat("a", expectedLength); + assertEquals(expected, name); + }); + } + // Impose a file name length limit and verify that it is enforced. + builder.setMaxEntryNameLength(PORTABLE_NAME_LIMIT); + final ArchiveException exception = assertThrows(ArchiveException.class, builder::get); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue(message.contains("file name length")); + assertTrue(message.contains(String.format("%,d", expectedLength))); + } + + @Test + void testValid7ZipFile() throws IOException { + final SevenZFile.Builder builder = SevenZFile.builder().setURI(getURI("synthetic/long-name/long-name.7z")); + final int expectedLength = Short.MAX_VALUE; + try (SevenZFile sevenZFile = builder.get()) { + final ArchiveEntry entry = sevenZFile.getNextEntry(); + assertNotNull(entry); + final String name = entry.getName(); + assertEquals(expectedLength, name.length(), "Unexpected name length"); + final String expected = StringUtils.repeat("a", expectedLength); + assertEquals(expected, name); + } + // SevenZFile parses the whole archive at once, so the builder throws the exception. + final ArchiveException exception = + assertThrows(ArchiveException.class, () -> builder.setMaxEntryNameLength(PORTABLE_NAME_LIMIT) + .get()); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue(message.contains("file name length")); + assertTrue(message.contains(String.format("%,d", expectedLength))); + } + + @ParameterizedTest + @ValueSource(strings = {"synthetic/long-name/long-name.dump", "synthetic/long-name/long-name-reversed.dump"}) + void testValidDumpStreams(final String resourceName) throws IOException { + final int rootInode = 2; + final int expectedDepth = 127; // number of nested directories + final int nameSegmentLength = 255; // length of each segment + final int totalEntries = 1 + expectedDepth + 1; // root + 127 dirs + 1 file + final int maxInode = rootInode + totalEntries - 1; + + final String nameSegment = StringUtils.repeat('a', nameSegmentLength); + + final DumpArchiveInputStream.Builder builder = + DumpArchiveInputStream.builder().setURI(getURI(resourceName)); + + try (DumpArchiveInputStream in = builder.get()) { + for (int expectedInode = rootInode; expectedInode <= maxInode; expectedInode++) { + final boolean isRegularFile = expectedInode == maxInode; + final DumpArchiveEntry entry = in.getNextEntry(); + + assertNotNull(entry, "Entry " + expectedInode + " should exist"); + + // Type checks: root + 127 are directories, last is a regular file. + assertEquals(!isRegularFile, entry.isDirectory(), "isDirectory() mismatch"); + + final int depth = expectedInode - rootInode; // 0 for root, 1..127 for dirs, 128 for file’s dir count + + final String expectedNameDirs = StringUtils.repeat(nameSegment + "/", depth); + final int expectedLength = (nameSegmentLength + 1) * depth - (isRegularFile ? 1 : 0); + + final String actualName = entry.getName(); + + assertEquals(expectedInode, entry.getIno(), "inode"); + assertEquals(expectedLength, actualName.length(), "name length"); + assertEquals(expectedNameDirs.substring(0, expectedLength), actualName, "full name"); + + // Structure checks: every path component is exactly 255×'a' + + String[] parts = actualName.split("/"); + if (parts.length > 0 && parts[parts.length - 1].isEmpty()) { + // Trailing slash yields an empty final component; ignore it. + parts = Arrays.copyOf(parts, parts.length - 1); + } + + // For directories: depth components; for file: depth components (including file itself) + assertEquals(depth, parts.length, "component count"); + for (int i = 0; i < parts.length; i++) { + assertEquals(nameSegmentLength, parts[i].length(), "segment[" + i + "] length"); + assertEquals(nameSegment, parts[i], "segment[" + i + "] content"); + } + } + + // Stream should now be exhausted. + assertNull(in.getNextEntry(), "No more entries expected after " + totalEntries); + } + + try (DumpArchiveInputStream in = + builder.setMaxEntryNameLength(PORTABLE_NAME_LIMIT).get()) { + int expectedLength; + for (int depth = 0; ; depth++) { + expectedLength = depth * (nameSegmentLength + 1); + if (expectedLength > PORTABLE_NAME_LIMIT) { + break; + } + assertDoesNotThrow(in::getNextEntry, "Entry " + (rootInode + depth) + " should be readable"); + } + final ArchiveException exception = assertThrows(ArchiveException.class, in::getNextEntry); + final String message = exception.getMessage(); + assertNotNull(message); + assertTrue(message.contains("file name length")); + assertTrue(message.contains(String.format("%,d", expectedLength))); + } + } +} diff --git a/src/test/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStreamTest.java b/src/test/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStreamTest.java index 75cacb00f2b..010042ac9ac 100644 --- a/src/test/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStreamTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/cpio/CpioArchiveInputStreamTest.java @@ -29,7 +29,6 @@ import java.nio.charset.StandardCharsets; import org.apache.commons.compress.AbstractTest; -import org.apache.commons.compress.MemoryLimitException; import org.apache.commons.compress.archivers.ArchiveException; import org.apache.commons.io.IOUtils; import org.junit.jupiter.api.Test; @@ -90,33 +89,6 @@ void testCpioUnarchiveMultibyteCharName() throws Exception { assertEquals(2, count); } - @Test - void testEndOfFileInEntry_c_namesize_0x7FFFFFFF() throws Exception { - // CPIO header with c_namesize = 0x7FFFFFFF - // @formatter:off - final String header = - "070701" + // c_magic - "00000000" + // c_ino - "000081A4" + // c_mode - "00000000" + // c_uid - "00000000" + // c_gid - "00000001" + // c_nlink - "00000000" + // c_mtime - "00000000" + // c_filesize - "00000000" + // c_devmajor - "00000000" + // c_devminor - "00000000" + // c_rdevmajor - "00000000" + // c_rdevminor - "7FFFFFFF" + // c_namesize - "00000000"; // c_check - // @formatter:on - final byte[] data = new byte[header.getBytes(StandardCharsets.US_ASCII).length + 1]; - System.arraycopy(header.getBytes(), 0, data, 0, header.getBytes().length); - try (CpioArchiveInputStream cpio = CpioArchiveInputStream.builder().setByteArray(data).get()) { - assertThrows(MemoryLimitException.class, () -> cpio.getNextEntry()); - } - } - @Test void testEndOfFileInEntry_c_namesize_0xFFFFFFFF() throws Exception { // CPIO header with c_namesize = 0xFFFFFFFF diff --git a/src/test/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStreamTest.java b/src/test/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStreamTest.java index c823b0757a6..665c29e1eea 100644 --- a/src/test/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStreamTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStreamTest.java @@ -36,6 +36,7 @@ import java.io.BufferedOutputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; +import java.io.EOFException; import java.io.File; import java.io.IOException; import java.io.InputStream; @@ -405,7 +406,8 @@ void testParseTarWithNonNumberPaxHeaders() throws IOException { void testParseTarWithSpecialPaxHeaders() throws IOException { try (TarArchiveInputStream archive = getTestStream("COMPRESS-530-fail.tar")) { assertThrows(ArchiveException.class, () -> archive.getNextEntry()); - assertThrows(ArchiveException.class, () -> IOUtils.toByteArray(archive)); + // The PAX header is truncated + assertThrows(EOFException.class, () -> IOUtils.toByteArray(archive)); } } @@ -501,7 +503,7 @@ void testShouldReadGNULongNameEntryWithWrongName() throws Exception { void testShouldThrowAnExceptionOnTruncatedEntries() throws Exception { final Path dir = createTempDirectory("COMPRESS-279"); try (TarArchiveInputStream is = getTestStream("COMPRESS-279-fail.tar")) { - assertThrows(ArchiveException.class, () -> { + assertThrows(EOFException.class, () -> { TarArchiveEntry entry = is.getNextTarEntry(); int count = 0; while (entry != null) { @@ -518,7 +520,7 @@ void testShouldThrowAnExceptionOnTruncatedStream() throws Exception { final Path dir = createTempDirectory("COMPRESS-279"); try (TarArchiveInputStream is = getTestStream("COMPRESS-279-fail.tar")) { final AtomicInteger count = new AtomicInteger(); - assertThrows(ArchiveException.class, () -> is.forEach(entry -> Files.copy(is, dir.resolve(String.valueOf(count.getAndIncrement()))))); + assertThrows(EOFException.class, () -> is.forEach(entry -> Files.copy(is, dir.resolve(String.valueOf(count.getAndIncrement()))))); } } diff --git a/src/test/java/org/apache/commons/compress/archivers/tar/TarFileTest.java b/src/test/java/org/apache/commons/compress/archivers/tar/TarFileTest.java index 5b8b9a18f3a..c0f38846788 100644 --- a/src/test/java/org/apache/commons/compress/archivers/tar/TarFileTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/tar/TarFileTest.java @@ -26,6 +26,7 @@ import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; +import java.io.EOFException; import java.io.File; import java.io.IOException; import java.io.InputStream; @@ -220,7 +221,7 @@ void testParseTarWithNonNumberPaxHeaders() { @Test void testParseTarWithSpecialPaxHeaders() { - assertThrows(ArchiveException.class, () -> new TarFile(getPath("COMPRESS-530-fail.tar"))); + assertThrows(EOFException.class, () -> new TarFile(getPath("COMPRESS-530-fail.tar"))); } @Test diff --git a/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java b/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java index c9375513616..126e73531fb 100644 --- a/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java @@ -50,6 +50,7 @@ import org.junit.jupiter.params.ParameterizedTest; import org.junit.jupiter.params.provider.Arguments; import org.junit.jupiter.params.provider.MethodSource; +import org.junit.jupiter.params.provider.ValueSource; class TarUtilsTest extends AbstractTest { @@ -117,12 +118,6 @@ static Stream testReadLongNameHandlesLimits() { Arguments.of("POSIX (padded)", posixLongName, paddedUtf8Bytes(posixLongName))); } - static Stream testReadLongNameThrowsOnTruncation() { - return Stream.of( - Arguments.of(Integer.MAX_VALUE, "truncated long name"), - Arguments.of(Long.MAX_VALUE, "invalid long name")); - } - private static byte[] utf8Bytes(final String s) { return s.getBytes(UTF_8); } @@ -413,7 +408,7 @@ void testReadLongNameHandlesLimits(final String kind, final String expectedName, Arrays.fill(dataWithGarbage, data.length, dataWithGarbage.length, (byte) 0xFF); try (InputStream in = new ByteArrayInputStream(dataWithGarbage)) { - final String actualName = TarUtils.readLongName(in, ZipEncodingHelper.getZipEncoding(UTF_8), entry); + final String actualName = TarUtils.readLongName(in, ZipEncodingHelper.getZipEncoding(UTF_8), Integer.MAX_VALUE, entry); assertEquals( expectedName, actualName, @@ -422,20 +417,17 @@ void testReadLongNameHandlesLimits(final String kind, final String expectedName, } @ParameterizedTest(name = "readLongName of {0} bytes throws ArchiveException") - @MethodSource - void testReadLongNameThrowsOnTruncation(final long size, final CharSequence expectedMessage) throws IOException { + @ValueSource(longs = { Integer.MAX_VALUE, Long.MAX_VALUE }) + void testReadLongNameThrowsOnTruncation(final long size) throws IOException { final TarArchiveEntry entry = new TarArchiveEntry("test"); entry.setSize(size); // absurdly large so any finite stream truncates try (InputStream in = new NullInputStream()) { - final ArchiveException ex = assertThrows( - ArchiveException.class, - () -> TarUtils.readLongName(in, TarUtils.DEFAULT_ENCODING, entry), - "Expected ArchiveException due to truncated long name, but no exception was thrown"); + final IOException ex = assertThrows( + IOException.class, + () -> TarUtils.readLongName(in, TarUtils.DEFAULT_ENCODING, Integer.MAX_VALUE, entry), + "Expected IOException due to out of range size for Java byte arrays"); final String actualMessage = StringUtils.toRootLowerCase(ex.getMessage()); assertNotNull(actualMessage, "Exception message should not be null"); - assertTrue( - actualMessage.contains(expectedMessage), - () -> "Expected exception message to contain '" + expectedMessage + "', but got: " + actualMessage); assertTrue( actualMessage.contains(String.format("%,d", size)), () -> "Expected exception message to mention '" + size + "', but got: " + actualMessage); diff --git a/src/test/resources/synthetic/long-name/bin-big-endian.cpio b/src/test/resources/synthetic/long-name/bin-big-endian.cpio new file mode 100644 index 0000000000000000000000000000000000000000..322464e498c6c6ad13f5b3ebc64cd99dda4d6546 GIT binary patch literal 32794 zcmeIuK@k8U00Xfi6$vP~!3$oH1qU`rAKQQ0%)dTPQ*QIE^VJ9tAV7cs0RjXF5FkK+ z009C72oNAZfB*pk1PBlyK!5-N0t5&UAV7cs0RjXF5FkK+009C72oNAZfB*pk1PBly zK!5-N0t5&UAV7cs0RjXF5FkK+009C72oNAZfB*pk1PBlyK!5-N0t5&UAV7cs0RjXF e5FkK+009C72oNAZfB*pk1PBlyK!CvW0?7siHHGT{ literal 0 HcmV?d00001 diff --git a/src/test/resources/synthetic/long-name/bin-little-endian.cpio b/src/test/resources/synthetic/long-name/bin-little-endian.cpio new file mode 100644 index 0000000000000000000000000000000000000000..91ae61d594bca449d70337fdeb0e1375a5b89b1f GIT binary patch literal 32794 zcmeIuQ566X5CFjwRRjqi_@% literal 0 HcmV?d00001 diff --git a/src/test/resources/synthetic/long-name/bsd-fail.ar b/src/test/resources/synthetic/long-name/bsd-fail.ar new file mode 100644 index 00000000000..f228574bc21 --- /dev/null +++ b/src/test/resources/synthetic/long-name/bsd-fail.ar @@ -0,0 +1,2 @@ +! +#1/2147483639 0 0 0 100644 2147483639` diff --git a/src/test/resources/synthetic/long-name/bsd-short-max-value.ar b/src/test/resources/synthetic/long-name/bsd-short-max-value.ar new file mode 100644 index 00000000000..45061b3fbb7 --- /dev/null +++ b/src/test/resources/synthetic/long-name/bsd-short-max-value.ar @@ -0,0 +1,3 @@ +! +#1/32767 0 0 0 100644 32767 ` 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\ No newline at end of file diff --git a/src/test/resources/synthetic/long-name/pax-fail.tar b/src/test/resources/synthetic/long-name/pax-fail.tar new file mode 100644 index 0000000000000000000000000000000000000000..296c37056df6a429eaafacd17bdfc7aa41592d2c GIT binary patch literal 528 zcmWGYtnf%pOi3-$&&khAXP^l%G%zqTF=1dZfSL}Y4b9;IE(cO#XlP(!2Ba&X>S;=q z7MCOzF&G%+m*=Gx;jt;bD8IA-k37s%FdC22!6ap5Xku<+VQgk%u27Izl3@z~x_lNp literal 0 HcmV?d00001 diff --git a/src/test/resources/synthetic/long-name/pax.tar b/src/test/resources/synthetic/long-name/pax.tar new file mode 100644 index 0000000000000000000000000000000000000000..2af1df4cac5d115cde6c1826e00e7fcfd1e864d1 GIT binary patch literal 35328 zcmeIuv2MaJ5CBlm{fhoUFHH*S(7j`S!BV4is0cDd@c9sd7lv$9NPRct;=7YieqZ_c z+2`-Ry!?)vA>AdKh*j666xZ8pKG&mZFU4A$PffI|^LRR5TKD} z Date: Thu, 25 Sep 2025 20:16:31 +0200 Subject: [PATCH 2/9] fix: reformat --- .../archivers/ar/ArArchiveInputStream.java | 3 +- .../dump/DumpArchiveInputStream.java | 3 +- .../compress/archivers/sevenz/SevenZFile.java | 15 +--- .../archivers/tar/TarArchiveInputStream.java | 9 +-- .../compress/archivers/tar/TarFile.java | 11 +-- .../compress/archivers/tar/TarUtils.java | 42 +++-------- .../archivers/zip/ZipArchiveInputStream.java | 3 +- .../compress/archivers/zip/ZipFile.java | 69 ++++--------------- .../commons/compress/utils/ArchiveUtils.java | 6 +- .../compress/archivers/tar/TarUtilsTest.java | 4 +- 10 files changed, 35 insertions(+), 130 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java index 40fdedaea26..7510aa6b4e5 100644 --- a/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/ar/ArArchiveInputStream.java @@ -246,8 +246,7 @@ public void close() throws IOException { * @since 1.3 */ private String getBSDLongName(final String bsdLongName) throws IOException { - final int nameLen = - checkEntryNameLength(ParsingUtils.parseIntValue(bsdLongName.substring(BSD_LONGNAME_PREFIX_LEN))); + final int nameLen = checkEntryNameLength(ParsingUtils.parseIntValue(bsdLongName.substring(BSD_LONGNAME_PREFIX_LEN))); final byte[] name = IOUtils.readRange(in, nameLen); final int read = name.length; count(read); diff --git a/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java index 4a492cf6df3..d9c7d7c3148 100644 --- a/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/dump/DumpArchiveInputStream.java @@ -550,8 +550,7 @@ private void readDirectoryEntry(DumpArchiveEntry entry) throws IOException { final byte type = blockBuffer[i + 6]; - final String name = - DumpArchiveUtil.decode(zipEncoding, blockBuffer, i + 8, Byte.toUnsignedInt(blockBuffer[i + 7])); + final String name = DumpArchiveUtil.decode(zipEncoding, blockBuffer, i + 8, Byte.toUnsignedInt(blockBuffer[i + 7])); if (CURRENT_PATH_SEGMENT.equals(name) || PARENT_PATH_SEGMENT.equals(name)) { // do nothing... diff --git a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java index 68fbfae3b13..68b94fc6abf 100644 --- a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java @@ -680,16 +680,8 @@ public SevenZFile(final SeekableByteChannel channel, final String fileName, fina this(channel, fileName, password, false, SevenZFileOptions.DEFAULT); } - private SevenZFile( - final SeekableByteChannel channel, - final String fileName, - final byte[] password, - final boolean closeOnError, - final int maxMemoryLimitKiB, - final boolean useDefaultNameForUnnamedEntries, - final boolean tryToRecoverBrokenArchives, - final int maxEntryNameLength) - throws IOException { + private SevenZFile(final SeekableByteChannel channel, final String fileName, final byte[] password, final boolean closeOnError, final int maxMemoryLimitKiB, + final boolean useDefaultNameForUnnamedEntries, final boolean tryToRecoverBrokenArchives, final int maxEntryNameLength) throws IOException { boolean succeeded = false; this.channel = channel; this.fileName = fileName; @@ -1366,8 +1358,7 @@ private void readFilesInfo(final ByteBuffer header, final Archive archive) throw if (names[i] == 0 && names[i + 1] == 0) { computeIfAbsent(fileMap, nextFile); // Entry name length in UTF-16LE characters (not bytes) - final int entryNameLength = - ArchiveUtils.checkEntryNameLength((i - nextName) / 2, maxEntryNameLength, "7z"); + final int entryNameLength = ArchiveUtils.checkEntryNameLength((i - nextName) / 2, maxEntryNameLength, "7z"); fileMap.get(nextFile).setName(new String(names, nextName, 2 * entryNameLength, UTF_16LE)); nextName = i + 2; nextFile++; diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java index 6f314098304..bbd031e07f4 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java @@ -513,14 +513,7 @@ public TarArchiveEntry getNextEntry() throws IOException { lastWasSpecial = TarUtils.isSpecialTarRecord(currEntry); if (lastWasSpecial) { // Handle PAX, GNU long name, or other special records - TarUtils.handleSpecialTarRecord( - this, - zipEncoding, - getMaxEntryNameLength(), - currEntry, - paxHeaders, - sparseHeaders, - globalPaxHeaders, + TarUtils.handleSpecialTarRecord(this, zipEncoding, getMaxEntryNameLength(), currEntry, paxHeaders, sparseHeaders, globalPaxHeaders, globalSparseHeaders); } } while (lastWasSpecial); diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java index 3649320c04b..8b2d24f2a83 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarFile.java @@ -511,15 +511,8 @@ private TarArchiveEntry getNextTarEntry() throws IOException { lastWasSpecial = TarUtils.isSpecialTarRecord(currEntry); if (lastWasSpecial) { // Handle PAX, GNU long name, or other special records - TarUtils.handleSpecialTarRecord( - getInputStream(currEntry), - zipEncoding, - maxEntryNameLength, - currEntry, - paxHeaders, - sparseHeaders, - globalPaxHeaders, - globalSparseHeaders); + TarUtils.handleSpecialTarRecord(getInputStream(currEntry), zipEncoding, maxEntryNameLength, currEntry, paxHeaders, sparseHeaders, + globalPaxHeaders, globalSparseHeaders); } } while (lastWasSpecial); // Apply global and local PAX headers diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java index b121d6f7c35..eddde337f6d 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java @@ -362,16 +362,9 @@ public static void formatUnsignedOctalString(final long value, final byte[] buff * @param globalSparseHeaders the list to update with global sparse headers. * @throws IOException if an I/O error occurs while reading the entry. */ - static void handleSpecialTarRecord( - final InputStream input, - final ZipEncoding encoding, - final int maxEntryNameLength, - final TarArchiveEntry entry, - final Map paxHeaders, - final List sparseHeaders, - final Map globalPaxHeaders, - final List globalSparseHeaders) - throws IOException { + static void handleSpecialTarRecord(final InputStream input, final ZipEncoding encoding, final int maxEntryNameLength, final TarArchiveEntry entry, + final Map paxHeaders, final List sparseHeaders, final Map globalPaxHeaders, + final List globalSparseHeaders) throws IOException { if (entry.isGNULongLinkEntry()) { // GNU long link entry: read and store the link path final String longLinkName = readLongName(input, encoding, maxEntryNameLength, entry); @@ -384,14 +377,12 @@ static void handleSpecialTarRecord( // Global PAX header: clear and update global PAX and sparse headers globalSparseHeaders.clear(); globalPaxHeaders.clear(); - globalPaxHeaders.putAll( - parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, globalSparseHeaders)); + globalPaxHeaders.putAll(parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, globalSparseHeaders)); } else if (entry.isPaxHeader()) { // PAX header: clear and update local PAX and sparse headers, parse GNU sparse headers if present sparseHeaders.clear(); paxHeaders.clear(); - paxHeaders.putAll( - parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, sparseHeaders)); + paxHeaders.putAll(parsePaxHeaders(input, globalPaxHeaders, entry.getSize(), maxEntryNameLength, sparseHeaders)); if (paxHeaders.containsKey(TarGnuSparseKeys.MAP)) { sparseHeaders.addAll(parseFromPAX01SparseHeaders(paxHeaders.get(TarGnuSparseKeys.MAP))); } @@ -777,13 +768,8 @@ protected static Map parsePaxHeaders(final InputStream inputStre * @throws ArchiveException If a header is malformed or contains invalid data * @throws IOException If an I/O error occurs while reading */ - private static Map parsePaxHeaders( - final InputStream inputStream, - final Map globalPaxHeaders, - final long headerSize, - final int maxEntryPathLength, - final List sparseHeaders) - throws IOException { + private static Map parsePaxHeaders(final InputStream inputStream, final Map globalPaxHeaders, final long headerSize, + final int maxEntryPathLength, final List sparseHeaders) throws IOException { // Check if there is enough memory to store the headers MemoryLimitException.checkBytes(headerSize, Long.MAX_VALUE); final Map headers = new HashMap<>(globalPaxHeaders); @@ -829,8 +815,7 @@ private static Map parsePaxHeaders( final byte[] rest = IOUtils.readRange(inputStream, restLen); final int got = rest.length; if (got != restLen) { - throw new EOFException(String.format( - "Failed to read PAX header: Expected %,d bytes, read %,d.", restLen, got)); + throw new EOFException(String.format("Failed to read PAX header: Expected %,d bytes, read %,d.", restLen, got)); } totalRead += restLen; // Drop trailing NL @@ -943,18 +928,13 @@ private static long[] readLineOfNumberForPax1x(final InputStream inputStream) th * @throws IOException if an I/O error occurs or the entry is truncated. * @throws ArchiveException if the entry size is invalid. */ - static String readLongName( - final InputStream input, - final ZipEncoding encoding, - final int maxEntryNameLength, - final TarArchiveEntry entry) - throws IOException { + static String readLongName(final InputStream input, final ZipEncoding encoding, final int maxEntryNameLength, + final TarArchiveEntry entry) throws IOException { final int declaredLength = ArchiveUtils.checkEntryNameLength(entry.getSize(), maxEntryNameLength, "TAR"); final byte[] name = IOUtils.readRange(input, declaredLength); int actualLength = name.length; if (actualLength != declaredLength) { - throw new EOFException(String.format( - "Truncated long name entry: expected %,d bytes, read %,d bytes.", declaredLength, actualLength)); + throw new EOFException(String.format("Truncated long name entry: expected %,d bytes, read %,d bytes.", declaredLength, actualLength)); } while (actualLength > 0 && name[actualLength - 1] == 0) { actualLength--; diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java index 555f10465af..8a6b42863f3 100644 --- a/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java +++ b/src/main/java/org/apache/commons/compress/archivers/zip/ZipArchiveInputStream.java @@ -862,8 +862,7 @@ public ZipArchiveEntry getNextZipEntry() throws IOException { } else { off += 3 * WORD; } - final int fileNameLen = - ArchiveUtils.checkEntryNameLength(ZipShort.getValue(lfhBuf, off), getMaxEntryNameLength(), "ZIP"); + final int fileNameLen = ArchiveUtils.checkEntryNameLength(ZipShort.getValue(lfhBuf, off), getMaxEntryNameLength(), "ZIP"); off += SHORT; final int extraLen = ZipShort.getValue(lfhBuf, off); final byte[] fileName = readRange(fileNameLen); diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java index 2c154636e3a..c7176bdc835 100644 --- a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java @@ -170,15 +170,8 @@ public ZipFile get() throws IOException { actualDescription = path.toString(); } final boolean closeOnError = seekableByteChannel != null; - return new ZipFile( - actualChannel, - actualDescription, - getCharset(), - useUnicodeExtraFields, - closeOnError, - ignoreLocalFileHeader, - zstdInputStreamFactory, - getMaxEntryNameLength()); + return new ZipFile(actualChannel, actualDescription, getCharset(), useUnicodeExtraFields, closeOnError, ignoreLocalFileHeader, + zstdInputStreamFactory, getMaxEntryNameLength()); } /** @@ -821,15 +814,8 @@ public ZipFile(final File file, final String encoding, final boolean useUnicodeE @Deprecated @SuppressWarnings("resource") // Caller closes public ZipFile(final File file, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this( - newReadByteChannel(file.toPath()), - file.getAbsolutePath(), - Charsets.toCharset(encoding), - useUnicodeExtraFields, - true, - ignoreLocalFileHeader, - null, - Short.MAX_VALUE); + this(newReadByteChannel(file.toPath()), file.getAbsolutePath(), Charsets.toCharset(encoding), useUnicodeExtraFields, true, ignoreLocalFileHeader, + null, Short.MAX_VALUE); } /** @@ -895,15 +881,8 @@ public ZipFile(final Path path, final String encoding, final boolean useUnicodeE @SuppressWarnings("resource") // Caller closes @Deprecated public ZipFile(final Path path, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this( - newReadByteChannel(path), - path.toAbsolutePath().toString(), - Charsets.toCharset(encoding), - useUnicodeExtraFields, - true, - ignoreLocalFileHeader, - null, - Short.MAX_VALUE); + this(newReadByteChannel(path), path.toAbsolutePath().toString(), Charsets.toCharset(encoding), useUnicodeExtraFields, true, ignoreLocalFileHeader, + null, Short.MAX_VALUE); } /** @@ -939,16 +918,9 @@ public ZipFile(final SeekableByteChannel channel, final String encoding) throws this(channel, "a SeekableByteChannel", encoding, true); } - private ZipFile( - final SeekableByteChannel channel, - final String channelDescription, - final Charset encoding, - final boolean useUnicodeExtraFields, - final boolean closeOnError, - final boolean ignoreLocalFileHeader, - final IOFunction zstdInputStream, - final int maxEntryNameLength) - throws IOException { + private ZipFile(final SeekableByteChannel channel, final String channelDescription, final Charset encoding, final boolean useUnicodeExtraFields, + final boolean closeOnError, final boolean ignoreLocalFileHeader, final IOFunction zstdInputStream, + final int maxEntryNameLength) throws IOException { this.isSplitZipArchive = channel instanceof ZipSplitReadOnlySeekableByteChannel; this.encoding = Charsets.toCharset(encoding, Builder.DEFAULT_CHARSET); this.zipEncoding = ZipEncodingHelper.getZipEncoding(encoding); @@ -993,15 +965,7 @@ private ZipFile( @Deprecated public ZipFile(final SeekableByteChannel channel, final String channelDescription, final String encoding, final boolean useUnicodeExtraFields) throws IOException { - this( - channel, - channelDescription, - Charsets.toCharset(encoding), - useUnicodeExtraFields, - false, - false, - null, - Short.MAX_VALUE); + this(channel, channelDescription, Charsets.toCharset(encoding), useUnicodeExtraFields, false, false, null, Short.MAX_VALUE); } /** @@ -1029,15 +993,7 @@ public ZipFile(final SeekableByteChannel channel, final String channelDescriptio @Deprecated public ZipFile(final SeekableByteChannel channel, final String channelDescription, final String encoding, final boolean useUnicodeExtraFields, final boolean ignoreLocalFileHeader) throws IOException { - this( - channel, - channelDescription, - Charsets.toCharset(encoding), - useUnicodeExtraFields, - false, - ignoreLocalFileHeader, - null, - Short.MAX_VALUE); + this(channel, channelDescription, Charsets.toCharset(encoding), useUnicodeExtraFields, false, ignoreLocalFileHeader, null, Short.MAX_VALUE); } /** @@ -1575,8 +1531,7 @@ private void readCentralDirectoryEntry(final Map maxEntryNameLength) { - throw new ArchiveException( - "Invalid %s archive entry: invalid file name length %,d (must be between 1 and %,d). " - + "If the file is not corrupt, consider increasing the `maxEntryNameLength` limit.", - archiveType, length, maxEntryNameLength); + throw new ArchiveException("Invalid %s archive entry: invalid file name length %,d (must be between 1 and %,d). If the file is not corrupt, " + + "consider increasing the `maxEntryNameLength` limit.", archiveType, length, maxEntryNameLength); } MemoryLimitException.checkBytes(length, SOFT_MAX_ARRAY_LENGTH); return (int) length; diff --git a/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java b/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java index 126e73531fb..83f6a2c0be2 100644 --- a/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/tar/TarUtilsTest.java @@ -422,9 +422,7 @@ void testReadLongNameThrowsOnTruncation(final long size) throws IOException { final TarArchiveEntry entry = new TarArchiveEntry("test"); entry.setSize(size); // absurdly large so any finite stream truncates try (InputStream in = new NullInputStream()) { - final IOException ex = assertThrows( - IOException.class, - () -> TarUtils.readLongName(in, TarUtils.DEFAULT_ENCODING, Integer.MAX_VALUE, entry), + final IOException ex = assertThrows(IOException.class, () -> TarUtils.readLongName(in, TarUtils.DEFAULT_ENCODING, Integer.MAX_VALUE, entry), "Expected IOException due to out of range size for Java byte arrays"); final String actualMessage = StringUtils.toRootLowerCase(ex.getMessage()); assertNotNull(actualMessage, "Exception message should not be null"); From 7599a8916fc8866629811e95b4c8a7caa082b8a6 Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Thu, 25 Sep 2025 20:35:55 +0200 Subject: [PATCH 3/9] fix: AbstractArchiveBuilder javadoc --- .../commons/compress/archivers/AbstractArchiveBuilder.java | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java b/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java index 67f713c9dbe..74a878576f8 100644 --- a/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java +++ b/src/main/java/org/apache/commons/compress/archivers/AbstractArchiveBuilder.java @@ -21,7 +21,10 @@ import org.apache.commons.io.build.AbstractStreamBuilder; /** - * Base builder for all archive formats. + * Base class for builder pattern implementations of all archive readers. + * + *

Ensures that all {@code ArchiveInputStream} implementations and other + * archive handlers expose a consistent set of configuration options.

* * @param The type of archive stream or file to build. * @param The type of the concrete builder subclass. From 7a3d21cbf94d012f769cf1cab7ac4cd629e51685 Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Thu, 25 Sep 2025 20:48:34 +0200 Subject: [PATCH 4/9] fix: extract PAX_NAME_KEY and PAX_LINK_NAME_KEY --- .../archivers/tar/TarArchiveEntry.java | 18 ++++++++++++++++-- .../compress/archivers/tar/TarUtils.java | 2 +- 2 files changed, 17 insertions(+), 3 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java index 652ba1fbc81..bcd9abc6b68 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java @@ -222,6 +222,20 @@ public class TarArchiveEntry implements ArchiveEntry, TarConstants, EntryStreamO */ private static final Pattern PAX_EXTENDED_HEADER_FILE_TIMES_PATTERN = Pattern.compile("-?\\d{1,19}(?:\\.\\d{1,19})?"); + /** + * PAX header key for the path (file name) of the entry. + * + * @see #getName() + */ + static final String PAX_NAME_KEY = "path"; + + /** + * PAX header key for the link path (link name) of the entry. + * + * @see #getLinkName() + */ + static final String PAX_LINK_NAME_KEY = "linkpath"; + private static FileTime fileTimeFromOptionalSeconds(final long seconds) { return seconds <= 0 ? null : FileTimes.fromUnixTime(seconds); } @@ -1629,10 +1643,10 @@ private void processPaxHeader(final String key, final String val, final Map parsePaxHeaders(final InputStream inputStream throw new ArchiveException("PAX header value size %,d exceeds size of header record.", restLen); } else { // 3. Entry length exceeds configurable file and link name limits - if ("path".equals(keyword) || "linkpath".equals(keyword)) { + if (TarArchiveEntry.PAX_NAME_KEY.equals(keyword) || TarArchiveEntry.PAX_LINK_NAME_KEY.equals(keyword)) { ArchiveUtils.checkEntryNameLength(restLen - 1, maxEntryPathLength, "TAR"); } final byte[] rest = IOUtils.readRange(inputStream, restLen); From b0789101965b055b6427d10fbb1a3a269216a699 Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Sun, 12 Oct 2025 23:40:11 +0200 Subject: [PATCH 5/9] fix: merge errors --- .../apache/commons/compress/archivers/sevenz/SevenZFile.java | 2 +- .../org/apache/commons/compress/archivers/zip/ZipFile.java | 4 +++- .../commons/compress/archivers/MaxNameEntryLengthTest.java | 2 +- 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java index e297d9d1189..529f1012321 100644 --- a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java @@ -489,13 +489,13 @@ private SevenZFile(final Builder builder) throws IOException { this.channel = builder.getChannel(SeekableByteChannel.class); try { this.fileName = builder.getName(); + this.maxEntryNameLength = builder.getMaxEntryNameLength(); this.maxMemoryLimitKiB = builder.maxMemoryLimitKiB; this.useDefaultNameForUnnamedEntries = builder.useDefaultNameForUnnamedEntries; this.tryToRecoverBrokenArchives = builder.tryToRecoverBrokenArchives; final byte[] password = builder.password; archive = readHeaders(password); this.password = password != null ? Arrays.copyOf(password, password.length) : null; - this.maxEntryNameLength = builder.getMaxEntryNameLength(); } catch (final ArithmeticException | IllegalArgumentException e) { final ArchiveException archiveException = new ArchiveException(e); try { diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java index 69610d27c54..900cd3e14dd 100644 --- a/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java @@ -756,7 +756,9 @@ private ZipFile(final Builder builder) throws IOException { } fillNameMap(); } catch (final IOException e) { - final ArchiveException archiveException = new ArchiveException("Error reading Zip content from " + builder.getName(), (Throwable) e); + final ArchiveException archiveException = e instanceof ArchiveException + ? (ArchiveException) e + : new ArchiveException("Error reading Zip content from " + builder.getName(), (Throwable) e); this.closed = true; try { this.archive.close(); diff --git a/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java b/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java index 43d17a2f797..cb8281b2375 100644 --- a/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java +++ b/src/test/java/org/apache/commons/compress/archivers/MaxNameEntryLengthTest.java @@ -247,7 +247,7 @@ void testValidZipFile() throws IOException { final ArchiveException exception = assertThrows(ArchiveException.class, builder::get); final String message = exception.getMessage(); assertNotNull(message); - assertTrue(message.contains("file name length")); + assertTrue(message.contains("file name length"), "Message mentions file name length: " + message); assertTrue(message.contains(String.format("%,d", expectedLength))); } From 5f1dccaba4c354d8fddf8891a60a3e5b77dd19ff Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Sun, 12 Oct 2025 23:41:49 +0200 Subject: [PATCH 6/9] Empty commit to trigger CI From 8756b7493dd812b9901dd08a0909f09b7abfc95a Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Mon, 13 Oct 2025 12:22:04 +0200 Subject: [PATCH 7/9] fix: replace `readRange` + size check with `IOUtils.toByteArray`** Simplifies PAX header parsing by using `IOUtils.toByteArray` from Commons IO instead of `IOUtils.readRange` followed by a manual size check. The previous size check was effectively unreachable: oversized PAX key/value pairs are validated earlier, and truncated reads are already handled by the input stream. This change improves code clarity and test coverage without altering behavior. --- .../compress/archivers/tar/TarArchiveEntry.java | 2 +- .../commons/compress/archivers/tar/TarUtils.java | 12 +++++------- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java index bcd9abc6b68..980b9f85fe1 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveEntry.java @@ -1065,7 +1065,7 @@ public long getRealSize() { * when the entry represents a sparse file. *

* - * @return This entry's file size. + * @return This entry's file size, always >= 0. */ @Override public long getSize() { diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java index d9e258eb00a..06c1b408323 100644 --- a/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java +++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarUtils.java @@ -673,7 +673,7 @@ static List parsePAX1XSparseHeaders(final InputStream in * * @param inputStream The input stream providing PAX header data * @param globalPaxHeaders The global PAX headers of the tar archive - * @param headerSize The total size of the PAX header block; ignored if negative + * @param headerSize The total size of the PAX header block; always non-negative * @param maxEntryPathLength The maximum permitted length for entry paths * @param sparseHeaders Output list to collect any GNU sparse 0.0 headers found * @return A map of PAX headers merged with the supplied global headers @@ -684,6 +684,7 @@ static List parsePAX1XSparseHeaders(final InputStream in */ static Map parsePaxHeaders(final InputStream inputStream, final Map globalPaxHeaders, final long headerSize, final int maxEntryPathLength, final List sparseHeaders) throws IOException { + assert headerSize >= 0 : "headerSize must be non-negative"; // Check if there is enough memory to store the headers MemoryLimitException.checkBytes(headerSize, Long.MAX_VALUE); final Map headers = new HashMap<>(globalPaxHeaders); @@ -719,18 +720,15 @@ static Map parsePaxHeaders(final InputStream inputStream, final if (restLen <= 1) { // only NL headers.remove(keyword); // 2. Entry length exceeds header size - } else if (headerSize >= 0 && restLen > headerSize - totalRead) { + } else if (restLen > headerSize - totalRead) { throw new ArchiveException("PAX header value size %,d exceeds size of header record.", restLen); } else { // 3. Entry length exceeds configurable file and link name limits if (TarArchiveEntry.PAX_NAME_KEY.equals(keyword) || TarArchiveEntry.PAX_LINK_NAME_KEY.equals(keyword)) { ArchiveUtils.checkEntryNameLength(restLen - 1, maxEntryPathLength, "TAR"); } - final byte[] rest = IOUtils.readRange(inputStream, restLen); - final int got = rest.length; - if (got != restLen) { - throw new EOFException(String.format("Failed to read PAX header: Expected %,d bytes, read %,d.", restLen, got)); - } + final byte[] rest = org.apache.commons.io.IOUtils.toByteArray(inputStream, restLen, + org.apache.commons.io.IOUtils.DEFAULT_BUFFER_SIZE); totalRead += restLen; // Drop trailing NL if (rest[restLen - 1] != '\n') { From 3ea727b0cd53dbf0922d49ae12a4495cd2d3f46b Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Mon, 13 Oct 2025 19:47:38 +0200 Subject: [PATCH 8/9] simplify file name parsing in `SevenZFile` This change streamlines file name parsing by: * Reading directly from the existing `ByteBuffer` rather than copying data into a temporary byte array. * Replacing the temporary byte array with a `StringBuilder` to accumulate the decoded UTF-16 characters. This reduces intermediate allocations and simplifies the code path without changing behavior. --- .../compress/archivers/sevenz/SevenZFile.java | 63 +++++++++++-------- 1 file changed, 38 insertions(+), 25 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java index 529f1012321..a3de42fcf59 100644 --- a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java @@ -18,8 +18,6 @@ */ package org.apache.commons.compress.archivers.sevenz; -import static java.nio.charset.StandardCharsets.UTF_16LE; - import java.io.BufferedInputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; @@ -976,8 +974,8 @@ public void close() throws IOException { } } - private void computeIfAbsent(final Map archiveEntries, final int index) { - archiveEntries.computeIfAbsent(index, i -> new SevenZArchiveEntry()); + private SevenZArchiveEntry computeIfAbsent(final Map archiveEntries, final int index) { + return archiveEntries.computeIfAbsent(index, i -> new SevenZArchiveEntry()); } private InputStream getCurrentStream() throws IOException { @@ -1144,7 +1142,7 @@ private Archive initializeArchive(final StartHeader startHeader, final byte[] pa } if (startHeader.nextHeaderCrc != cis.getChecksum().getValue()) { throw new ArchiveException("NextHeader CRC-32 mismatch"); - } +} channel.position(position); } Archive archive = new Archive(); @@ -1303,12 +1301,18 @@ private void readFilesInfo(final ByteBuffer header, final Archive archive) throw BitSet isEmptyStream = null; BitSet isEmptyFile = null; BitSet isAnti = null; + final int originalLimit = header.limit(); while (true) { final int propertyType = getUnsignedByte(header); if (propertyType == 0) { break; } - final long size = readUint64(header); + final int size = readUint64ToIntExact(header); + if (size < 0 || size > header.remaining()) { + throw new ArchiveException("Corrupted 7z archive: property size %,d, but only %,d bytes available", size, header.remaining()); + } + // Limit the buffer to the size of the property + header.limit(header.position() + size); switch (propertyType) { case NID.kEmptyStream: { isEmptyStream = readBits(header, numFilesInt); @@ -1324,23 +1328,22 @@ private void readFilesInfo(final ByteBuffer header, final Archive archive) throw } case NID.kName: { /* final int external = */ getUnsignedByte(header); - MemoryLimitException.checkKiB(bytesToKiB(size - 1), maxMemoryLimitKiB); - final byte[] names = new byte[checkByteArray(ArchiveException.toIntExact(size - 1))]; - final int namesLength = names.length; - get(header, names); + final StringBuilder entryName = new StringBuilder(); int nextFile = 0; - int nextName = 0; - for (int i = 0; i < namesLength; i += 2) { - if (names[i] == 0 && names[i + 1] == 0) { - computeIfAbsent(fileMap, nextFile); + while (header.remaining() > 0) { + final char c = header.getChar(); + if (c == 0) { // Entry name length in UTF-16LE characters (not bytes) - final int entryNameLength = ArchiveUtils.checkEntryNameLength((i - nextName) / 2, maxEntryNameLength, "7z"); - fileMap.get(nextFile).setName(new String(names, nextName, 2 * entryNameLength, UTF_16LE)); - nextName = i + 2; + // as it might be surprising to users for ASCII characters to take 2 bytes each. + ArchiveUtils.checkEntryNameLength(entryName.length(), maxEntryNameLength, "7z"); + computeIfAbsent(fileMap, nextFile).setName(entryName.toString()); + entryName.setLength(0); nextFile++; + } else { + entryName.append(c); } } - if (nextName != namesLength || nextFile != numFilesInt) { + if (entryName.length() != 0 || nextFile != numFilesInt) { throw new ArchiveException("Error parsing file names"); } break; @@ -1409,6 +1412,8 @@ private void readFilesInfo(final ByteBuffer header, final Archive archive) throw break; } } + // Restore original limit + header.limit(originalLimit); } int nonEmptyFileCounter = 0; int emptyFileCounter = 0; @@ -1810,12 +1815,18 @@ private void sanityCheckArchiveProperties(final ByteBuffer header) throws IOExce private void sanityCheckFilesInfo(final ByteBuffer header, final ArchiveStatistics stats) throws IOException { stats.numberOfEntries = toNonNegativeInt("numFiles", readUint64(header)); int emptyStreams = -1; + final int originalLimit = header.limit(); while (true) { final int propertyType = getUnsignedByte(header); if (propertyType == 0) { break; } - final long size = readUint64(header); + final int size = readUint64ToIntExact(header); + if (size < 0 || size > header.remaining()) { + throw new ArchiveException("Corrupted 7z archive: property size %,d, but only %,d bytes available", size, header.remaining()); + } + // Limit the buffer to the size of the property + header.limit(header.position() + size); switch (propertyType) { case NID.kEmptyStream: { emptyStreams = readBits(header, stats.numberOfEntries).cardinality(); @@ -1836,17 +1847,17 @@ private void sanityCheckFilesInfo(final ByteBuffer header, final ArchiveStatisti break; } case NID.kName: { + // 1 byte for external and sequence of zero-terminated UTF-16 strings. + if (size % 2 != 1) { + throw new ArchiveException("File names length invalid"); + } final int external = getUnsignedByte(header); if (external != 0) { throw new ArchiveException("Not implemented"); } - final int namesLength = toNonNegativeInt("file names length", size - 1); - if ((namesLength & 1) != 0) { - throw new ArchiveException("File names length invalid"); - } int filesSeen = 0; - for (int i = 0; i < namesLength; i += 2) { - final char c = getChar(header); + while (header.remaining() > 0) { + final char c = header.getChar(); if (c == 0) { filesSeen++; } @@ -1919,6 +1930,8 @@ private void sanityCheckFilesInfo(final ByteBuffer header, final ArchiveStatisti break; } } + // Restore original limit + header.limit(originalLimit); } stats.numberOfEntriesWithStream = stats.numberOfEntries - Math.max(emptyStreams, 0); } From d00954d5e49666e6beaf56f93326d885e1c70a8e Mon Sep 17 00:00:00 2001 From: "Piotr P. Karwasz" Date: Mon, 13 Oct 2025 21:48:16 +0200 Subject: [PATCH 9/9] fix: PMD failure --- .../apache/commons/compress/archivers/sevenz/SevenZFile.java | 4 ---- 1 file changed, 4 deletions(-) diff --git a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java index a3de42fcf59..75fe65a1cd4 100644 --- a/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java +++ b/src/main/java/org/apache/commons/compress/archivers/sevenz/SevenZFile.java @@ -373,10 +373,6 @@ private static void get(final ByteBuffer buf, final byte[] to) throws EOFExcepti checkEndOfFile(buf, to.length).get(to); } - private static char getChar(final ByteBuffer buf) throws EOFException { - return checkEndOfFile(buf, Character.BYTES).getChar(); - } - private static int getInt(final ByteBuffer buf) throws EOFException { return checkEndOfFile(buf, Integer.BYTES).getInt(); }