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Support multi-homed hosts and plumb MAC addresses for Linux

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This commit is contained in:
Cameron Gutman
2020-01-20 17:34:22 -08:00
parent 6f3927b6ae
commit 0631d9dfb2
5 changed files with 20 additions and 45 deletions
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44
sunshine/platform/linux.cpp
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@@ -5,6 +5,8 @@
#include "common.h"
#include "../main.h"
#include <fstream>
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <net/if.h>
@@ -385,42 +387,22 @@ std::string from_sockaddr(const sockaddr *const ip_addr) {
return std::string { data };
}
std::string get_local_ip(int family) {
std::bitset<2> family_f {};
if(family == 0) {
family_f[0] = true;
family_f[1] = true;
}
if(family == AF_INET) {
family_f[0] = true;
}
if(family == AF_INET6) {
family_f[1] = true;
}
std::string ip_addr;
auto ifaddr = get_ifaddrs();
for(auto pos = ifaddr.get(); pos != nullptr; pos = pos->ifa_next) {
if(pos->ifa_addr && pos->ifa_flags & IFF_UP && !(pos->ifa_flags & IFF_LOOPBACK)) {
if(
(family_f[0] && pos->ifa_addr->sa_family == AF_INET) ||
(family_f[1] && pos->ifa_addr->sa_family == AF_INET6)
){
ip_addr = from_sockaddr(pos->ifa_addr);
break;
std::string get_mac_address(const std::string_view &address) {
auto ifaddrs = get_ifaddrs();
for(auto pos = ifaddrs.get(); pos != nullptr; pos = pos->ifa_next) {
if(pos->ifa_addr && address == from_sockaddr(pos->ifa_addr)) {
std::ifstream mac_file("/sys/class/net/"s + pos->ifa_name + "/address");
if(mac_file.good()) {
std::string mac_address;
std::getline(mac_file, mac_address);
return mac_address;
}
}
}
return ip_addr;
BOOST_LOG(warning) << "Unable to find MAC address for "sv << address;
return "00:00:00:00:00:00"s;
}
std::string get_local_ip() { return get_local_ip(AF_INET); }
void freeImage(XImage *p) {
XDestroyImage(p);
}