4 files changed, 2 insertions, 43 deletions
diff --git a/protocols/WhatsApp/src/message.cpp b/protocols/WhatsApp/src/message.cpp
index cc6e9d8ff9..985728208d 100644
--- a/protocols/WhatsApp/src/message.cpp
+++ b/protocols/WhatsApp/src/message.cpp
@@ -254,7 +254,7 @@ void WhatsAppProto::ProcessMessage(WAMSG type, const Wa__WebMessageInfo &msg)
 			if (auto *pHist = protoMsg->historysyncnotification) {
 				MBinBuffer buf(DownloadEncryptedFile(directPath2url(pHist->directpath), pHist->mediakey, "History"));
 				if (!buf.isEmpty()) {
-					MBinBuffer inflate(unzip(unpadBuffer16(buf)));
+					MBinBuffer inflate(Utils_Unzip(unpadBuffer16(buf)));
 
 					proto::HistorySync sync(inflate);
 					if (sync)
diff --git a/protocols/WhatsApp/src/proto.h b/protocols/WhatsApp/src/proto.h
index 0ec03e5313..ef3bb4f408 100644
--- a/protocols/WhatsApp/src/proto.h
+++ b/protocols/WhatsApp/src/proto.h
@@ -435,9 +435,6 @@ class WhatsAppProto : public PROTO<WhatsAppProto>
 	// Binary packets
 	void ProcessBinaryPacket(const uint8_t *pData, size_t cbLen);
 
-	// unzip operations
-	MBinBuffer unzip(const MBinBuffer &src);
-
 	/// Avatars ////////////////////////////////////////////////////////////////////////////
 	CMStringW GetAvatarFileName(MCONTACT hContact);
 	void      ServerFetchAvatar(const char *jid);
diff --git a/protocols/WhatsApp/src/server.cpp b/protocols/WhatsApp/src/server.cpp
index 24d64e5aa7..857666b2e4 100644
--- a/protocols/WhatsApp/src/server.cpp
+++ b/protocols/WhatsApp/src/server.cpp
@@ -191,7 +191,7 @@ void WhatsAppProto::ProcessBinaryPacket(const uint8_t *pData, size_t cbDataLen)
 			auto b = rdr.readInt8();
 			if (b & 2) {
 				buf.remove(1);
-				buf = unzip(buf);
+				buf = Utils_Unzip(buf);
 				rdr = WAReader(buf.data(), buf.length());
 			}
 
diff --git a/protocols/WhatsApp/src/utils.cpp b/protocols/WhatsApp/src/utils.cpp
index a1d234e405..c49821e21e 100644
--- a/protocols/WhatsApp/src/utils.cpp
+++ b/protocols/WhatsApp/src/utils.cpp
@@ -362,44 +362,6 @@ void WhatsAppProto::Popup(MCONTACT hContact, const wchar_t *szMsg, const wchar_t
 
 /////////////////////////////////////////////////////////////////////////////////////////
 
-MBinBuffer WhatsAppProto::unzip(const MBinBuffer &src)
-{
-	z_stream strm = {};
-	inflateInit(&strm);
-
-	strm.avail_in = (uInt)src.length();
-	strm.next_in = (Bytef *)src.data();
-
-	MBinBuffer res;
-	Bytef buf[2048];
-
-	while (strm.avail_in > 0) {
-		strm.avail_out = sizeof(buf);
-		strm.next_out = buf;
-
-		int ret = inflate(&strm, Z_NO_FLUSH);
-		switch (ret) {
-		case Z_NEED_DICT:
-			ret = Z_DATA_ERROR;
-			__fallthrough;
-
-		case Z_DATA_ERROR:
-		case Z_MEM_ERROR:
-			inflateEnd(&strm);
-			return res;
-		}
-
-		res.append(buf, sizeof(buf) - strm.avail_out);
-		if (ret == Z_STREAM_END)
-			break;
-	}
-
-	inflateEnd(&strm);
-	return res;
-}
-
-/////////////////////////////////////////////////////////////////////////////////////////
-
 void bin2file(const MBinBuffer &buf, const wchar_t *pwszFileName)
 {
 	int fileId = _wopen(pwszFileName, _O_WRONLY | _O_TRUNC | _O_BINARY | _O_CREAT, _S_IREAD | _S_IWRITE);