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Code Issues Releases Wiki Activity

NetworkInterface class is working.

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This commit is contained in:
Matias Fontanini
2012-08-09 09:52:44 -03:00
parent dd1d1c3c49
commit 29c5a696e5
7 changed files with 196 additions and 25 deletions
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62
src/network_interface.cpp
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@@ -20,6 +20,8 @@
*/
#include <stdexcept>
#include <cstring>
#include <vector>
#ifndef WIN32
#include <linux/if_packet.h>
#include <net/if.h>
@@ -28,24 +30,35 @@
#include "utils.h"
/** \cond */
template<typename Address>
struct HWAddressCollector {
Address *result;
struct InterfaceInfoCollector {
typedef Tins::NetworkInterface::Info info_type;
info_type *info;
int iface_id;
const char* iface_name;
bool found;
HWAddressCollector(Tins::HWAddress<6> *res, int id)
: result(res), iface_id(id), found(false){ }
InterfaceInfoCollector(info_type *res, int id, const char* if_name)
: info(res), iface_id(id), iface_name(if_name), found(false) { }
bool operator() (struct ifaddrs *addr) {
using Tins::Utils::net_to_host_l;
const struct sockaddr_ll* addr_ptr = ((struct sockaddr_ll*)addr->ifa_addr);
if(!found && addr->ifa_addr->sa_family == AF_PACKET && addr_ptr->sll_ifindex == iface_id) {
*result = addr_ptr->sll_addr;
if(addr->ifa_addr->sa_family == AF_PACKET && addr_ptr->sll_ifindex == iface_id)
info->hw_addr = addr_ptr->sll_addr;
else if(addr->ifa_addr->sa_family == AF_INET && !std::strcmp(addr->ifa_name, iface_name)) {
info->ip_addr = net_to_host_l(((struct sockaddr_in *)addr->ifa_addr)->sin_addr.s_addr);
info->netmask = net_to_host_l(((struct sockaddr_in *)addr->ifa_netmask)->sin_addr.s_addr);
if((addr->ifa_flags & (IFF_BROADCAST | IFF_POINTOPOINT)))
info->bcast_addr = net_to_host_l(((struct sockaddr_in *)addr->ifa_ifu.ifu_broadaddr)->sin_addr.s_addr);
else
info->bcast_addr = 0;
found = true;
}
return found;
}
};
/** \endcond */
namespace Tins {
NetworkInterface::NetworkInterface(const std::string &name) {
@@ -54,18 +67,41 @@ NetworkInterface::NetworkInterface(const std::string &name) {
throw std::runtime_error("Invalid interface error");
}
NetworkInterface::NetworkInterface(id_type id)
: iface_id(id) {
NetworkInterface::NetworkInterface(IPv4Address ip) : iface_id(0) {
typedef std::vector<Utils::RouteEntry> entries_type;
if(ip == "127.0.0.1")
iface_id = if_nametoindex("lo");
else {
entries_type entries;
uint32_t ip_int = ip;
route_entries(std::back_inserter(entries));
for(entries_type::const_iterator it(entries.begin()); it != entries.end(); ++it) {
if((ip_int & it->mask) == it->destination) {
iface_id = if_nametoindex(it->interface.c_str());
break;
}
}
if(!iface_id)
throw std::runtime_error("Error looking up interface");
}
}
NetworkInterface::address_type NetworkInterface::address() {
address_type addr;
::HWAddressCollector<address_type> collector(&addr, iface_id);
std::string NetworkInterface::name() const {
char iface_name[IF_NAMESIZE];
if(!if_indextoname(iface_id, iface_name))
throw std::runtime_error("Error fetching this interface's name");
return iface_name;
}
NetworkInterface::Info NetworkInterface::addresses() const {
const std::string &iface_name = name();
Info info;
InterfaceInfoCollector collector(&info, iface_id, iface_name.c_str());
Utils::generic_iface_loop(collector);
if(!collector.found)
throw std::runtime_error("Error looking up interface address");
return addr;
return info;
}
}