bool route_table_mgr::parse_enrty(nlmsghdr *nl_header, route_val *p_val)
{
int len;
struct rtmsg *rt_msg;
struct rtattr *rt_attribute;
// get route entry header
rt_msg = (struct rtmsg *) NLMSG_DATA(nl_header);
// we are not concerned about the local and default route table
if (rt_msg->rtm_family != AF_INET || rt_msg->rtm_table == RT_TABLE_LOCAL || rt_msg->rtm_table == RT_TABLE_DEFAULT)
return false;
p_val->set_protocol(rt_msg->rtm_protocol);
p_val->set_scope(rt_msg->rtm_scope);
p_val->set_type(rt_msg->rtm_type);
p_val->set_table_id(rt_msg->rtm_table);
in_addr_t dst_mask = htonl(VMA_NETMASK(rt_msg->rtm_dst_len));
p_val->set_dst_mask(dst_mask);
p_val->set_dst_pref_len(rt_msg->rtm_dst_len);
len = RTM_PAYLOAD(nl_header);
rt_attribute = (struct rtattr *) RTM_RTA(rt_msg);
for (;RTA_OK(rt_attribute, len);rt_attribute=RTA_NEXT(rt_attribute,len)) {
parse_attr(rt_attribute, p_val);
}
p_val->set_state(true);
p_val->set_str();
return true;
}
void route_table_mgr::create_route_val_from_info(const netlink_route_info *netlink_route_info, route_val &netlink_route_val)
{
char dst_addr_chr[ADDR_LEN];
inet_ntop(AF_INET, netlink_route_info->dst_addr, dst_addr_chr, ADDR_LEN);
netlink_route_val.set_dst_addr(inet_addr((const char*)dst_addr_chr));
in_addr_t dst_mask = htonl(VMA_NETMASK(netlink_route_info->dst_prefixlen));
netlink_route_val.set_dst_mask(dst_mask);
netlink_route_val.set_dst_pref_len(netlink_route_info->dst_prefixlen);
netlink_route_val.set_protocol(netlink_route_info->protocol);
netlink_route_val.set_scope(netlink_route_info->scope);
netlink_route_val.set_type(netlink_route_info->type);
int if_index = netlink_route_info->oif;
netlink_route_val.set_if_index(if_index);
char if_name[IFNAMSIZ];
if_indextoname(if_index,if_name);
netlink_route_val.set_if_name(if_name);
struct sockaddr_in src_addr;
if (!get_ipv4_from_ifname(if_name, &src_addr)) {
netlink_route_val.set_src_addr(src_addr.sin_addr.s_addr);
}
netlink_route_val.set_str();
if (g_vlogger_level >= VLOG_FUNC) {
netlink_route_val.print_route_val();
}
}
bool route_table_mgr::rt_mgr_parse_enrty(nlmsghdr *nl_header, route_val *p_rtv)
{
int len;
struct rtmsg *rt_msg;
struct rtattr *rt_attribute;
// get route entry header
rt_msg = (struct rtmsg *) NLMSG_DATA(nl_header);
// we are only concerned about the main route table
if (rt_msg->rtm_family != AF_INET || rt_msg->rtm_table != RT_TABLE_MAIN)
return false;
p_rtv->set_protocol(rt_msg->rtm_protocol);
p_rtv->set_scope(rt_msg->rtm_scope);
p_rtv->set_type(rt_msg->rtm_type);
in_addr_t dst_mask = htonl(VMA_NETMASK(rt_msg->rtm_dst_len));
p_rtv->set_dst_mask(dst_mask);
p_rtv->set_dst_pref_len(rt_msg->rtm_dst_len);
len = RTM_PAYLOAD(nl_header);
rt_attribute = (struct rtattr *) RTM_RTA(rt_msg);
for (;RTA_OK(rt_attribute, len);rt_attribute=RTA_NEXT(rt_attribute,len)) {
rt_mgr_parse_attr(rt_attribute, p_rtv);
}
p_rtv->set_state(true);
if (!p_rtv->get_src_addr()) {
struct sockaddr_in src_addr;
char *if_name = (char *)p_rtv->get_if_name();
if (!get_ipv4_from_ifname(if_name, &src_addr)) {
p_rtv->set_src_addr(src_addr.sin_addr.s_addr);
}
else {
// Failed mapping if_name to IPv4 address
// Should we log or return error also from here?
}
}
p_rtv->set_str();
return true;
}
