From 7609856cd54b7a8f214182ac9d805bba586cda1b Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@clickhouse.com>
Date: Mon, 4 Mar 2024 03:06:27 +0100
Subject: [PATCH] Fix another error

---
 src/Compression/CompressionCodecMultiple.cpp                | 5 -----
 src/Compression/CompressionCodecNone.cpp                    | 6 +++++-
 src/Compression/CompressionCodecNone.h                      | 2 --
 .../03003_codec_multiple_buffer_overflow.reference          | 1 +
 .../0_stateless/03003_codec_multiple_buffer_overflow.sh     | 3 +++
 5 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/Compression/CompressionCodecMultiple.cpp b/src/Compression/CompressionCodecMultiple.cpp
index 801609bbe143..6dc10677a3fa 100644
--- a/src/Compression/CompressionCodecMultiple.cpp
+++ b/src/Compression/CompressionCodecMultiple.cpp
@@ -1,14 +1,9 @@
 #include <Compression/CompressionCodecMultiple.h>
 #include <Compression/CompressionInfo.h>
 #include <Common/PODArray.h>
-#include <base/unaligned.h>
 #include <Compression/CompressionFactory.h>
-#include <Parsers/ASTExpressionList.h>
-#include <Parsers/ASTFunction.h>
 #include <IO/WriteHelpers.h>
 #include <IO/WriteBufferFromString.h>
-#include <IO/Operators.h>
-#include <base/hex.h>
 
 
 namespace DB
diff --git a/src/Compression/CompressionCodecNone.cpp b/src/Compression/CompressionCodecNone.cpp
index 065ac4a2625c..53d62e519207 100644
--- a/src/Compression/CompressionCodecNone.cpp
+++ b/src/Compression/CompressionCodecNone.cpp
@@ -27,8 +27,12 @@ UInt32 CompressionCodecNone::doCompressData(const char * source, UInt32 source_s
     return source_size;
 }
 
-void CompressionCodecNone::doDecompressData(const char * source, UInt32 /*source_size*/, char * dest, UInt32 uncompressed_size) const
+void CompressionCodecNone::doDecompressData(const char * source, UInt32 source_size, char * dest, UInt32 uncompressed_size) const
 {
+    if (source_size != uncompressed_size)
+        throw Exception(decompression_error_code, "Wrong data for compression codec NONE: source_size ({}) != uncompressed_size ({})",
+            source_size, uncompressed_size);
+
     memcpy(dest, source, uncompressed_size);
 }
 
diff --git a/src/Compression/CompressionCodecNone.h b/src/Compression/CompressionCodecNone.h
index 1565720947df..5d6f135b3514 100644
--- a/src/Compression/CompressionCodecNone.h
+++ b/src/Compression/CompressionCodecNone.h
@@ -18,9 +18,7 @@ class CompressionCodecNone final : public ICompressionCodec
     void updateHash(SipHash & hash) const override;
 
 protected:
-
     UInt32 doCompressData(const char * source, UInt32 source_size, char * dest) const override;
-
     void doDecompressData(const char * source, UInt32 source_size, char * dest, UInt32 uncompressed_size) const override;
 
     bool isCompression() const override { return false; }
diff --git a/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.reference b/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.reference
index b6db4b31fcb9..93d120dac019 100644
--- a/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.reference
+++ b/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.reference
@@ -1 +1,2 @@
 Too large
+Wrong data
diff --git a/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.sh b/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.sh
index 3a1537356c2d..93290f62c58c 100755
--- a/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.sh
+++ b/tests/queries/0_stateless/03003_codec_multiple_buffer_overflow.sh
@@ -6,3 +6,6 @@ CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 
 echo -ne 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|
     ${CLICKHOUSE_CURL} "${CLICKHOUSE_URL}&decompress=1&http_native_compression_disable_checksumming_on_decompress=1" --data-binary @- | grep -o -F 'Too large'
+
+echo -ne 'checksumchecksum\x91\x2b\x01\x00\x00\xbe\xe1\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x00\x04\x04\x04\x00\x08\x7f\x00\x01\x06\x82\x82\x82\x82\x82\x82\x82\x80\x41\x41\x41\x41\x41\x9a\x75\x6d\x63\x68\x65\x63\x6b\x73\x6d\x63\x68\x65\x63\x6b\x73\x75\x00\x00\x00\x41\x41\x41\x42\x64\x41\x41\x41\x0c\x00\x1c\x41\x41\xbe\x22\x41\x41\x00\x00\x00\x00\x11\x00\x41\x41\x75\x00\x00\x00\x41\x41\x41\x42\x64\x41\x41\x41\x0c\x00\x20\x41\x41\xbe\x22\x41\x41\x41\x41\x41\x00\x00\x00\x00\x00\x01\x14\xff\x7f\x00\x41\x00\x00\x00\x00\x00\x00\x41\x41\x75\x00\x00\x00\x41\x41\x41\x42\x64\x41\x61\x41\x0c\x00\x20\x41\x41\xbe\x22\x41\x41\x41\x00\x41\x14\x14\x41\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x0f\x0f\x0f\x0f\x0f\x41\x41\x41\x41\x64\x00\x30\x00\xcf\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x41\x41\x0b\x00\x00\x00\x41\x41\x41\xe8\x1f\xe1\x00\x01\x00\xff\x00\x41\x41\xbf\x41\x41\x40\x40\xe1\x00\x00\x00\x00\x1a\x00\x20\x00\x00\x00\x41\x00\x00\x00\x42\x64\x41\x41\x41\x0c\x00\x1c\x41\x41\xbe\x22\x41\x41\x00\x00\x00\x00\x00\x00\x41\x41\x75\x00\x00\x00\x41\x41\x41\x42\x64\x00\x00\x0b\x00\xe6\xff\x00\x00\x00\x00\x00' |
+    ${CLICKHOUSE_CURL} "${CLICKHOUSE_URL}&decompress=1&http_native_compression_disable_checksumming_on_decompress=1" --data-binary @- | grep -o -F 'Wrong data'