Status genRoute(const struct rt_msghdr *route,
const AddressMap &addr_map,
Row &r) {
r["flags"] = INTEGER(route->rtm_flags);
r["mtu"] = INTEGER(route->rtm_rmx.rmx_mtu);
if ((route->rtm_addrs & RTA_DST) == RTA_DST) {
r["destination"] = ipAsString(addr_map[RTAX_DST]);
}
if ((route->rtm_addrs & RTA_GATEWAY) == RTA_GATEWAY) {
r["gateway"] = ipAsString(addr_map[RTAX_GATEWAY]);
}
if (r["destination"] == kDefaultRoute) {
r["netmask"] = "0";
} else if ((route->rtm_addrs & RTA_NETMASK) == RTA_NETMASK) {
addr_map[RTAX_NETMASK]->sa_family = addr_map[RTAX_DST]->sa_family;
r["netmask"] = INTEGER(netmaskFromIP(addr_map[RTAX_NETMASK]));
} else {
if (addr_map[RTAX_DST]->sa_family == AF_INET6) {
r["netmask"] = "128";
} else {
r["netmask"] = "32";
}
}
// Fields not supported by OSX routes:
r["source"] = "";
r["metric"] = "0";
return Status(0, "OK");
}
void genAddressesFromAddr(const struct ifaddrs *addr, QueryData &results) {
std::string dest_address;
Row r;
r["interface"] = std::string(addr->ifa_name);
// Address and mask will appear every time.
if (addr->ifa_addr != nullptr) {
r["address"] = ipAsString(static_cast<struct sockaddr *>(addr->ifa_addr));
}
if (addr->ifa_netmask != nullptr) {
r["mask"] = ipAsString(static_cast<struct sockaddr *>(addr->ifa_netmask));
}
// The destination address is used for either a broadcast or PtP address.
if (addr->ifa_dstaddr != nullptr) {
dest_address =
ipAsString(static_cast<struct sockaddr *>(addr->ifa_dstaddr));
if ((addr->ifa_flags & IFF_BROADCAST) == IFF_BROADCAST) {
r["broadcast"] = dest_address;
} else {
r["point_to_point"] = dest_address;
}
}
results.push_back(r);
}
Status genArp(const struct rt_msghdr *route,
const AddressMap &addr_map,
Row &r) {
if (addr_map[RTAX_DST]->sa_family != AF_INET) {
return Status(1, "Not in ARP cache");
}
// The cache will always know the address.
r["address"] = ipAsString(addr_map[RTAX_DST]);
auto sdl = (struct sockaddr_dl *)addr_map[RTA_DST];
if (sdl->sdl_alen > 0) {
r["mac"] = macAsString(LLADDR(sdl));
} else {
r["mac"] = "incomplete";
}
// Note: also possible to detect published.
if (route->rtm_rmx.rmx_expire == 0) {
r["permanent"] = "1";
} else {
r["permanent"] = "0";
}
return Status(0, "OK");
}
std::string ipAsString(const struct in_addr* in) {
struct sockaddr_in addr;
addr.sin_addr = *in;
addr.sin_family = AF_INET;
addr.sin_port = 0;
#ifdef __MAC__
addr.sin_len = sizeof(sockaddr_in);
#endif
return ipAsString(reinterpret_cast<struct sockaddr*>(&addr));
}
