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Modified get_default_gateway code for Windows

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to return the route with the smallest metric
if multiple 0.0.0.0/0.0.0.0 entries are present.


git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@691 e7ae566f-a301-0410-adde-c780ea21d3b5
This commit is contained in:
james 2005-10-20 07:42:01 +00:00
parent 6ccbd31bc4
commit 348fb443b6
1 changed files with 17 additions and 10 deletions
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27
route.c
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@ -1102,9 +1102,11 @@ test_routes (const struct route_list *rl, const struct tuntap *tt)
static const MIB_IPFORWARDROW *
get_default_gateway_row (const MIB_IPFORWARDTABLE *routes)
{
DWORD lowest_index = ~0;
struct gc_arena gc = gc_new ();
DWORD lowest_metric = ~0;
const MIB_IPFORWARDROW *ret = NULL;
int i;
int best = -1;
if (routes)
{
@ -1114,22 +1116,27 @@ get_default_gateway_row (const MIB_IPFORWARDTABLE *routes)
const in_addr_t net = ntohl (row->dwForwardDest);
const in_addr_t mask = ntohl (row->dwForwardMask);
const DWORD index = row->dwForwardIfIndex;
const DWORD metric = row->dwForwardMetric1;
#if 0
msg (M_INFO, "route[%d] %s %s %s",
i,
print_in_addr_t ((in_addr_t) net, 0, &gc),
print_in_addr_t ((in_addr_t) mask, 0, &gc),
print_in_addr_t ((in_addr_t) gw, 0, &gc));
#endif
dmsg (D_ROUTE_DEBUG, "GDGR: route[%d] %s/%s i=%d m=%d",
i,
print_in_addr_t ((in_addr_t) net, 0, &gc),
print_in_addr_t ((in_addr_t) mask, 0, &gc),
(int)index,
(int)metric);
if (!net && !mask && index < lowest_index)
if (!net && !mask && metric < lowest_metric)
{
ret = row;
lowest_index = index;
lowest_metric = metric;
best = i;
}
}
}
dmsg (D_ROUTE_DEBUG, "GDGR: best=%d lm=%u", best, (unsigned int)lowest_metric);
gc_free (&gc);
return ret;
}