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added support for 0.0.0.0/0 traffic selectors

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fixed routing to make correct 0.0.0.0/0 routes
This commit is contained in:
Martin Willi
2007-03-01 11:42:08 +00:00
parent 671a54e9ab
commit 0c8aba6771
9 changed files with 162 additions and 40 deletions
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src/charon/threads/kernel_interface.c
+44 -3
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@@ -1085,7 +1085,29 @@ static struct xfrm_selector ts2selector(traffic_selector_t *src,
*/
static status_t find_addr_by_ts(traffic_selector_t *ts, host_t **ip)
{
host_t *try = NULL;
host_t *try = NULL, *local;
int family;
/* if we have a family which includes localhost, we do not
* search for an IP, we use the default */
family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6;
if (family == AF_INET)
{
local = host_create_from_string("127.0.0.1", 0);
}
else
{
local = host_create_from_string("::1", 0);
}
if (ts->includes(ts, local))
{
*ip = host_create_any(family);
local->destroy(local);
return SUCCESS;
}
local->destroy(local);
#ifdef HAVE_GETIFADDRS
struct ifaddrs *list;
@@ -1660,6 +1682,26 @@ static status_t manage_srcroute(private_kernel_interface_t *this,
unsigned char request[BUFFER_SIZE];
chunk_t src;
/* if route is 0.0.0.0/0, we can't install it, as it would
* overwrite the default route. Instead, we add two routes:
* 0.0.0.0/1 and 128.0.0.0/1 */
if (route->prefixlen == 0)
{
rt_refcount_t half;
status_t status;
half.dst_net = chunk_alloca(route->dst_net.len);
memset(half.dst_net.ptr, 0, half.dst_net.len);
half.src_ip = route->src_ip;
half.if_index = route->if_index;
half.prefixlen = 1;
status = manage_srcroute(this, nlmsg_type, flags, &half);
half.dst_net.ptr[0] |= 0x80;
status = manage_srcroute(this, nlmsg_type, flags, &half);
return status;
}
memset(&request, 0, sizeof(request));
hdr = (struct nlmsghdr*)request;
@@ -1675,14 +1717,13 @@ static status_t manage_srcroute(private_kernel_interface_t *this,
msg->rtm_type = RTN_UNICAST;
msg->rtm_scope = RT_SCOPE_UNIVERSE;
src = route->src_ip->get_address(route->src_ip);
if (add_rtattr(hdr, sizeof(request), RTA_DST,
route->dst_net.ptr, route->dst_net.len) != SUCCESS)
{
return FAILED;
}
src = route->src_ip->get_address(route->src_ip);
if (add_rtattr(hdr, sizeof(request), RTA_PREFSRC,
src.ptr, src.len) != SUCCESS)
{