1 files changed, 64 insertions, 0 deletions
diff --git a/libtransport/src/hicn/transport/utils/linux.h b/libtransport/src/hicn/transport/utils/linux.h
new file mode 100755
index 000000000..5820528e1
--- /dev/null
+++ b/libtransport/src/hicn/transport/utils/linux.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2017-2019 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.
+ */
+
+#pragma once
+
+#ifdef __linux__
+
+#include <hicn/transport/portability/portability.h>
+#include <hicn/transport/utils/log.h>
+
+#include <arpa/inet.h>
+#include <ifaddrs.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <string>
+
+#define LINK_LOCAL_PREFIX 0xfe80
+
+namespace utils {
+
+static TRANSPORT_ALWAYS_INLINE int retrieveInterfaceAddress(
+    const std::string &interface_name, struct sockaddr_in6 *address) {
+  struct ifaddrs *ifap, *ifa;
+  char addr[INET6_ADDRSTRLEN];
+
+  getifaddrs(&ifap);
+
+  for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+    if (ifa->ifa_addr->sa_family == AF_INET6 &&
+        strcmp(ifa->ifa_name, interface_name.c_str()) == 0) {
+      struct sockaddr_in6 *tmp = (struct sockaddr_in6 *)ifa->ifa_addr;
+      uint16_t prefix = 0;
+      memcpy(&prefix, tmp->sin6_addr.s6_addr, sizeof(uint16_t));
+
+      if (htons(LINK_LOCAL_PREFIX) != prefix) {
+        *address = *(struct sockaddr_in6 *)ifa->ifa_addr;
+        getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), addr,
+                    sizeof(addr), NULL, 0, NI_NUMERICHOST);
+        TRANSPORT_LOGI("Interface: %s\tAddress: %s", ifa->ifa_name, addr);
+      }
+    }
+  }
+
+  freeifaddrs(ifap);
+
+  return 0;
+}
+
+}  // namespace utils
+
+#endif  // __linux__
+\ No newline at end of file