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The following commit(s) were added to refs/heads/master by this push:
new 632434ccb Throw an IllegalArgumentException when a file name or
comment in gzip parameters encodes to a byte array with a 0 byte (#618)
632434ccb is described below
commit 632434ccbede8b2bd2e0a5bb3ff04844ced8355b
Author: ddeschenes-1 <[email protected]>
AuthorDate: Sat Nov 30 08:23:06 2024 -0500
Throw an IllegalArgumentException when a file name or comment in gzip
parameters encodes to a byte array with a 0 byte (#618)
* (doc) Added safety check to avoid corrupting byte '0' in filename or
comment of gzip parameters.
* Remove unnecessary commas; normalize formatting
* Collapse double `if` into a single `if` (and reuse isNotEmpty())
---------
Co-authored-by: Danny Deschenes <[email protected]>
Co-authored-by: Gary Gregory <[email protected]>
---
.../compress/compressors/gzip/GzipParameters.java | 19 ++++++++--
.../compressors/gzip/GzipParametersTest.java | 44 ++++++++++++++++++++++
2 files changed, 59 insertions(+), 4 deletions(-)
diff --git
a/src/main/java/org/apache/commons/compress/compressors/gzip/GzipParameters.java
b/src/main/java/org/apache/commons/compress/compressors/gzip/GzipParameters.java
index 07ce38f26..4588e8ad9 100644
---
a/src/main/java/org/apache/commons/compress/compressors/gzip/GzipParameters.java
+++
b/src/main/java/org/apache/commons/compress/compressors/gzip/GzipParameters.java
@@ -25,7 +25,8 @@ import java.time.Instant;
import java.util.zip.Deflater;
import org.apache.commons.io.Charsets;
-
+import org.apache.commons.lang3.ArrayUtils;
+import org.apache.commons.lang3.StringUtils;
/**
* Parameters for the GZIP compressor.
@@ -298,6 +299,13 @@ public class GzipParameters {
private int bufferSize = 512;
private int deflateStrategy = Deflater.DEFAULT_STRATEGY;
+ private String requireNonNulByte(final String text) {
+ if (StringUtils.isNotEmpty(text) &&
ArrayUtils.contains(text.getBytes(fileNameCharset), (byte) 0)) {
+ throw new IllegalArgumentException("String encoded in Charset '" +
fileNameCharset + "' contains the nul byte 0 which is not supported in gzip.");
+ }
+ return text;
+ }
+
/**
* Gets size of the buffer used to retrieve compressed data.
*
@@ -448,9 +456,10 @@ public class GzipParameters {
* Sets an arbitrary user-defined comment.
*
* @param comment a user-defined comment.
+ * @throws IllegalArgumentException if the encoded bytes would contain a
nul byte '\0' reserved for gzip field termination.
*/
public void setComment(final String comment) {
- this.comment = comment;
+ this.comment = requireNonNulByte(comment);
}
/**
@@ -495,20 +504,22 @@ public class GzipParameters {
* Sets the name of the compressed file.
*
* @param fileName the name of the file without the directory path
+ * @throws IllegalArgumentException if the encoded bytes would contain a
nul byte '\0' reserved for gzip field termination.
* @deprecated Use {@link #setFileName(String)}.
*/
@Deprecated
public void setFilename(final String fileName) {
- this.fileName = fileName;
+ setFileName(fileName);
}
/**
* Sets the name of the compressed file.
*
* @param fileName the name of the file without the directory path
+ * @throws IllegalArgumentException if the encoded bytes would contain a
nul byte '\0' reserved for gzip field termination.
*/
public void setFileName(final String fileName) {
- this.fileName = fileName;
+ this.fileName = requireNonNulByte(fileName);
}
/**
diff --git
a/src/test/java/org/apache/commons/compress/compressors/gzip/GzipParametersTest.java
b/src/test/java/org/apache/commons/compress/compressors/gzip/GzipParametersTest.java
index 30f1b09a9..d2febb1d9 100644
---
a/src/test/java/org/apache/commons/compress/compressors/gzip/GzipParametersTest.java
+++
b/src/test/java/org/apache/commons/compress/compressors/gzip/GzipParametersTest.java
@@ -20,11 +20,15 @@
package org.apache.commons.compress.compressors.gzip;
import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
+import java.nio.charset.Charset;
import java.util.zip.Deflater;
import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
/**
* Tests {@link GzipParameters}.
@@ -46,4 +50,44 @@ public class GzipParametersTest {
gzipParameters.setOS(GzipParameters.OS.Z_SYSTEM);
assertTrue(gzipParameters.toString().contains("Z_SYSTEM"));
}
+
+ @ParameterizedTest
+ //@formatter:off
+ @CsvSource({
+ " , helloworld",
+ " , helloéworld",
+ "ISO-8859-1, helloworld",
+ "ISO-8859-1, helloéworld",
+ "UTF-8 , helloworld",
+ "UTF-8 , helloéworld"
+ })
+ //@formatter:on
+ public void testLegalCommentOrFileName(final String charset, final String
text) {
+ final GzipParameters p = new GzipParameters();
+ if (charset != null) {
+ p.setFileNameCharset(Charset.forName(charset));
+ }
+ p.setComment(text);
+ p.setFilename(text);
+ p.setFileName(text);
+ }
+
+ @ParameterizedTest
+ //@formatter:off
+ @CsvSource({
+ " , hello\0world, false",
+ "ISO-8859-1, hello\0world, false",
+ "UTF-8 , hello\0world, false",
+ "UTF-16BE , helloworld, false"
+ })
+ //@formatter:on
+ public void testIllegalCommentOrFileName(final String charset, final
String text) {
+ final GzipParameters p = new GzipParameters();
+ if (charset != null) {
+ p.setFileNameCharset(Charset.forName(charset));
+ }
+ assertThrows(IllegalArgumentException.class, () -> p.setComment(text));
+ assertThrows(IllegalArgumentException.class, () ->
p.setFilename(text));
+ assertThrows(IllegalArgumentException.class, () ->
p.setFileName(text));
+ }
}
