diff --git a/tools/Makefile.am b/tools/Makefile.am
index 88c72e2..1d7d814 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -8,4 +8,6 @@
 libupdater_la_LDFLAGS = -static
 libupdater_la_CXXFLAGS =
 libupdater_la_SOURCES = \
-	updater.cpp
+	updater.cpp \
+	bt.cpp \
+	lpc.cpp
diff --git a/tools/bt.cpp b/tools/bt.cpp
new file mode 100644
index 0000000..de26b27
--- /dev/null
+++ b/tools/bt.cpp
@@ -0,0 +1,7 @@
+#include "bt.hpp"
+
+bool BtDataHandler::sendContents(const std::string& input,
+                                 std::uint16_t session)
+{
+    return false;
+}
diff --git a/tools/bt.hpp b/tools/bt.hpp
new file mode 100644
index 0000000..dbd5c8c
--- /dev/null
+++ b/tools/bt.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "interface.hpp"
+
+class BtDataHandler : public DataInterface
+{
+  public:
+    BtDataHandler() = default;
+
+    bool sendContents(const std::string& input, std::uint16_t session) override;
+};
diff --git a/tools/interface.hpp b/tools/interface.hpp
new file mode 100644
index 0000000..39f3fb8
--- /dev/null
+++ b/tools/interface.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+class DataInterface
+{
+  public:
+    virtual ~DataInterface() = default;
+
+    /**
+     * Given an open session to either /flash/image, /flash/tarball, or
+     * /flash/hash, this method will configure, and send the data, but not close
+     * the session.
+     *
+     * @param[in] input - path to file to send.
+     * @param[in] session - the session ID to use.
+     * @return bool on success.
+     */
+    virtual bool sendContents(const std::string& input,
+                              std::uint16_t session) = 0;
+};
diff --git a/tools/lpc.cpp b/tools/lpc.cpp
new file mode 100644
index 0000000..9e8e01d
--- /dev/null
+++ b/tools/lpc.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Licensed 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
+ *
+ *     http://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.
+ */
+
+#include "lpc.hpp"
+
+bool LpcDataHandler::sendContents(const std::string& input,
+                                  std::uint16_t session)
+{
+    return false;
+}
diff --git a/tools/lpc.hpp b/tools/lpc.hpp
new file mode 100644
index 0000000..de35c1b
--- /dev/null
+++ b/tools/lpc.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "interface.hpp"
+
+class LpcDataHandler : public DataInterface
+{
+  public:
+    LpcDataHandler() = default;
+
+    bool sendContents(const std::string& input, std::uint16_t session) override;
+};
diff --git a/tools/test/data_interface_mock.hpp b/tools/test/data_interface_mock.hpp
new file mode 100644
index 0000000..d823da5
--- /dev/null
+++ b/tools/test/data_interface_mock.hpp
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "interface.hpp"
+
+#include <gmock/gmock.h>
+
+class DataInterfaceMock : public DataInterface
+{
+
+  public:
+    virtual ~DataInterfaceMock() = default;
+
+    MOCK_METHOD2(sendContents, bool(const std::string&, std::uint16_t));
+};
diff --git a/tools/updater.cpp b/tools/updater.cpp
index 4771180..4041d4c 100644
--- a/tools/updater.cpp
+++ b/tools/updater.cpp
@@ -16,8 +16,48 @@
 
 #include "updater.hpp"
 
+#include "bt.hpp"
+#include "interface.hpp"
+#include "lpc.hpp"
+
+#include <memory>
+
 int updaterMain(const std::string& interface, const std::string& imagePath,
                 const std::string& signaturePath)
 {
+    std::unique_ptr<DataInterface> handler;
+
+    /* Input has already been validated in this case. */
+    if (interface == "ipmibt")
+    {
+        handler = std::make_unique<BtDataHandler>();
+    }
+    else if (interface == "ipmilpc")
+    {
+        handler = std::make_unique<LpcDataHandler>();
+    }
+
+    if (!handler)
+    {
+        /* TODO(venture): use a custom exception. */
+        std::fprintf(stderr, "Interface %s is unavailable\n",
+                     interface.c_str());
+        return -1;
+    }
+
+    /* TODO(venture): Add optional parameter to specify the flash type, default
+     * to legacy for now.
+     */
+    std::string goalfirmware = "/flash/image";
+
+    /* Get list of blob_ids, check for /flash/image, or /flash/tarball.
+     * TODO(venture) the mechanism doesn't care, but the caller of burn_my_bmc
+     * will have in mind which they're sending and we need to verify it's
+     * available and use it.
+     */
+
+    /* Call stat on /flash/image (or /flash/tarball) and check if data interface
+     * is supported. */
+
     return 0;
 }