1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
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__
|