1 files changed, 84 insertions, 0 deletions
diff --git a/libtransport/src/core/io_module.cc b/libtransport/src/core/io_module.cc
new file mode 100644
index 000000000..fef0c1504
--- /dev/null
+++ b/libtransport/src/core/io_module.cc
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * 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 <dlfcn.h>
+#include <hicn/transport/core/io_module.h>
+#include <hicn/transport/utils/log.h>
+
+#ifdef ANDROID
+#include <io_modules/udp/hicn_forwarder_module.h>
+#endif
+
+#include <deque>
+
+namespace transport {
+namespace core {
+
+IoModule::~IoModule() {}
+
+IoModule *IoModule::load(const char *module_name) {
+#ifdef ANDROID
+  return new HicnForwarderModule();
+#else
+  void *handle = 0;
+  IoModule *module = 0;
+  IoModule *(*creator)(void) = 0;
+  const char *error = 0;
+
+  // open module
+  handle = dlopen(module_name, RTLD_NOW);
+  if (!handle) {
+    if ((error = dlerror()) != 0) {
+      TRANSPORT_LOGE("%s", error);
+    }
+    return 0;
+  }
+
+  // link factory method
+  creator = (IoModule * (*)(void)) dlsym(handle, "create_module");
+  if (!creator) {
+    if ((error = dlerror()) != 0) {
+      TRANSPORT_LOGE("%s", error);
+      return 0;
+    }
+  }
+
+  // create object and return it
+  module = (*creator)();
+  module->handle_ = handle;
+
+  return module;
+#endif
+}
+
+bool IoModule::unload(IoModule *module) {
+  if (!module) {
+    return false;
+  }
+
+#ifdef ANDROID
+  delete module;
+#else
+  // destroy object and close module
+  void *handle = module->handle_;
+  delete module;
+  dlclose(handle);
+#endif
+
+  return true;
+}
+
+}  // namespace core
+}  // namespace transport
+\ No newline at end of file