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Merge pull request #434 from zielmicha/fix-ip

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Binder.hpp: gather all IPv4 interface addresses
This commit is contained in:
Adam Ierymenko 2017-01-19 10:47:47 -08:00 committed by GitHub
commit 989cbb4d8d
1 changed files with 37 additions and 21 deletions
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58
osdep/Binder.hpp
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@ -236,30 +236,46 @@ public:
// Get IPv4 addresses for each device
if (ifnames.size() > 0) {
const int controlfd = (int)socket(AF_INET,SOCK_DGRAM,0);
if (controlfd >= 0) {
for(std::set<std::string>::iterator devname(ifnames.begin());devname!=ifnames.end();++devname) {
struct ifreq ifr;
memset(&ifr,0,sizeof(ifr));
ifr.ifr_addr.sa_family = AF_INET;
Utils::scopy(ifr.ifr_name,sizeof(ifr.ifr_name),devname->c_str());
if (ioctl(controlfd,SIOCGIFADDR,&ifr) >= 0) {
InetAddress ip(&(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr),4,0);
if (ifChecker.shouldBindInterface(devname->c_str(),ip)) {
switch(ip.ipScope()) {
default: break;
case InetAddress::IP_SCOPE_PSEUDOPRIVATE:
case InetAddress::IP_SCOPE_GLOBAL:
case InetAddress::IP_SCOPE_SHARED:
case InetAddress::IP_SCOPE_PRIVATE:
ip.setPort(port);
localIfAddrs.insert(std::pair<InetAddress,std::string>(ip,*devname));
break;
}
}
struct ifconf configuration;
configuration.ifc_len = 0;
configuration.ifc_buf = nullptr;
if (controlfd < 0) goto ip4_address_error;
if (ioctl(controlfd, SIOCGIFCONF, &configuration) < 0) goto ip4_address_error;
configuration.ifc_buf = (char*)malloc(configuration.ifc_len);
if (ioctl(controlfd, SIOCGIFCONF, &configuration) < 0) goto ip4_address_error;
for (int i=0; i < (int)(configuration.ifc_len / sizeof(ifreq)); i ++) {
struct ifreq& request = configuration.ifc_req[i];
struct sockaddr* addr = &request.ifr_ifru.ifru_addr;
if (addr->sa_family != AF_INET) continue;
std::string ifname = request.ifr_ifrn.ifrn_name;
// name can either be just interface name or interface name followed by ':' and arbitrary label
if (ifname.find(':') != std::string::npos) {
ifname = ifname.substr(0, ifname.find(':'));
}
InetAddress ip(&(((struct sockaddr_in *)addr)->sin_addr),4,0);
if (ifChecker.shouldBindInterface(ifname.c_str(), ip)) {
switch(ip.ipScope()) {
default: break;
case InetAddress::IP_SCOPE_PSEUDOPRIVATE:
case InetAddress::IP_SCOPE_GLOBAL:
case InetAddress::IP_SCOPE_SHARED:
case InetAddress::IP_SCOPE_PRIVATE:
ip.setPort(port);
localIfAddrs.insert(std::pair<InetAddress,std::string>(ip, ifname));
break;
}
}
close(controlfd);
}
ip4_address_error:
free(configuration.ifc_buf);
if (controlfd > 0) close(controlfd);
}
const bool gotViaProc = (localIfAddrs.size() > 0);