diff options
Diffstat (limited to 'libtransport/includes/hicn/transport/utils/linux.h')
-rw-r--r-- | libtransport/includes/hicn/transport/utils/linux.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libtransport/includes/hicn/transport/utils/linux.h b/libtransport/includes/hicn/transport/utils/linux.h new file mode 100644 index 000000000..5820528e1 --- /dev/null +++ b/libtransport/includes/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__
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