File size: 2,025 Bytes
62cfde8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | diff --git a/src/main/java/io/airlift/compress/v3/snappy/SnappyRawDecompressor.java b/src/main/java/io/airlift/compress/v3/snappy/SnappyRawDecompressor.java
index 00728c2..246ee7e 100644
--- a/src/main/java/io/airlift/compress/v3/snappy/SnappyRawDecompressor.java
+++ b/src/main/java/io/airlift/compress/v3/snappy/SnappyRawDecompressor.java
@@ -150,7 +150,7 @@ final class SnappyRawDecompressor
// bit 8).
int matchOffset = entry & 0x700;
matchOffset += trailer;
- if (matchOffset < 0) {
+ if (matchOffset <= 0) {
throw new MalformedInputException(input - inputAddress);
}
diff --git a/src/test/java/io/airlift/compress/v3/snappy/TestSnappyJava.java b/src/test/java/io/airlift/compress/v3/snappy/TestSnappyJava.java
index 22713a3..3dbd553 100644
--- a/src/test/java/io/airlift/compress/v3/snappy/TestSnappyJava.java
+++ b/src/test/java/io/airlift/compress/v3/snappy/TestSnappyJava.java
@@ -15,8 +15,12 @@ package io.airlift.compress.v3.snappy;
import io.airlift.compress.v3.Compressor;
import io.airlift.compress.v3.Decompressor;
+import io.airlift.compress.v3.MalformedInputException;
import io.airlift.compress.v3.thirdparty.XerialSnappyCompressor;
import io.airlift.compress.v3.thirdparty.XerialSnappyDecompressor;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
class TestSnappyJava
extends AbstractTestSnappy
@@ -44,4 +48,13 @@ class TestSnappyJava
{
return new XerialSnappyDecompressor();
}
+
+ @Test
+ void testZeroMatchOffsetFails()
+ {
+ byte[] zeroMatchOffset = new byte[] {16, 1, 0, 1, 0, 1, 0, 1, 0};
+ assertThatThrownBy(() -> new SnappyJavaDecompressor().decompress(zeroMatchOffset, 0, zeroMatchOffset.length, new byte[64], 0, 64))
+ .isInstanceOf(MalformedInputException.class)
+ .hasMessageContaining("Malformed input: offset=2");
+ }
}
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