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Added Utils::gateway_from_ip function.(not tested yet).

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This commit is contained in:
Matias Fontanini
2012-03-22 22:42:37 -03:00
parent fa9c260d85
commit 67eb7e355f
2 changed files with 37 additions and 0 deletions
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23
src/utils.cpp
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@@ -241,6 +241,29 @@ string Tins::Utils::interface_from_ip(uint32_t ip) {
return "";
}
bool Tins::Utils::gateway_from_ip(uint32_t ip, uint32_t &gw_addr) {
ifstream input("/proc/net/route");
bool match(false);
string iface;
string destination, mask;
uint32_t destination_int, mask_int;
ip = Utils::net_to_host_l(ip);
skip_line(input);
while(!match) {
input >> iface >> destination;
for(unsigned i(0); i < 6; ++i)
input >> mask;
from_hex(destination, destination_int);
from_hex(mask, mask_int);
if((ip & mask_int) == destination_int) {
gw_addr = destination_int;
return true;
}
skip_line(input);
}
return false;
}
set<string> Tins::Utils::network_interfaces() {
InterfaceCollector collector;
generic_iface_loop(collector);