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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <cstring>
#include "interfaces.h"
#include "url.h"
using namespace std;
t_interface::t_interface(string _name) : name(_name) {}
string t_interface::get_ip_addr(void) const {
return inet_ntoa(address);
}
string t_interface::get_ip_netmask(void) const {
return inet_ntoa(netmask);
}
list <t_interface> *get_interfaces(bool include_loopback) {
struct ifaddrs *ifa, *ifaddrs;
struct sockaddr_in *sin;
t_interface *intf;
list<t_interface> *result = new list<t_interface>;
if (getifaddrs(&ifaddrs)) {
// No interfaces found
return result;
}
for (ifa = ifaddrs; ifa ; ifa = ifa -> ifa_next) {
// Skip interface without address
// Skip interfaces marked DOWN and LOOPBACK.
if (ifa->ifa_addr == NULL || !(ifa->ifa_flags & IFF_UP) ||
((ifa->ifa_flags & IFF_LOOPBACK) && !include_loopback)) {
continue;
}
// Add the interface to the list if it has an IP4 address
switch(ifa->ifa_addr->sa_family) {
case AF_INET:
intf = new t_interface(ifa->ifa_name);
sin = (struct sockaddr_in *)ifa->ifa_addr;
memcpy(&intf->address, &sin->sin_addr,
sizeof(struct in_addr));
sin = (struct sockaddr_in *)ifa->ifa_netmask;
memcpy(&intf->netmask, &sin->sin_addr,
sizeof(struct in_addr));
result->push_back(*intf);
delete intf;
break;
}
}
freeifaddrs(ifaddrs);
return result;
}
bool exists_interface(const string &hostname) {
struct hostent *h;
h = gethostbyname(hostname.c_str());
if (h == NULL) return false;
string ipaddr = inet_ntoa(*((struct in_addr *)h->h_addr));
list<t_interface> *l = get_interfaces(true);
for (list<t_interface>::iterator i = l->begin(); i != l->end(); i++) {
if (i->get_ip_addr() == ipaddr) {
delete l;
return true;
}
}
delete l;
return false;
}
bool exists_interface_dev(const string &devname, string &ip_address) {
list<t_interface> *l = get_interfaces(true);
for (list<t_interface>::iterator i = l->begin(); i != l->end(); i++) {
if (i->name == devname) {
ip_address = i->get_ip_addr();
delete l;
return true;
}
}
delete l;
return false;
}
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