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Treat the whole localhost range as local IPs

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This commit is contained in:
Viktor Liu
2025-01-29 22:43:14 +01:00
parent 4d635e3c2f
commit 48f58d776c
2 changed files with 42 additions and 0 deletions
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6
client/firewall/uspfilter/localip.go
View File

@@ -93,6 +93,12 @@ func (m *localIPManager) UpdateLocalIPs(iface common.IFaceMapper) (err error) {
ipv4Set := make(map[string]struct{}) ipv4Set := make(map[string]struct{})
var ipv4Addresses []string var ipv4Addresses []string
// 127.0.0.0/8
high := uint16(127) << 8
for i := uint16(0); i < 256; i++ {
newIPv4Bitmap[high|i] = 0xffffffff
}
if iface != nil { if iface != nil {
if err := m.processIP(iface.Address().IP, &newIPv4Bitmap, ipv4Set, &ipv4Addresses); err != nil { if err := m.processIP(iface.Address().IP, &newIPv4Bitmap, ipv4Set, &ipv4Addresses); err != nil {
return err return err

36
client/firewall/uspfilter/localip_test.go
View File

@@ -16,6 +16,42 @@ func TestLocalIPManager(t *testing.T) {
testIP net.IP testIP net.IP
expected bool expected bool
}{ }{
{
name: "Localhost range",
setupAddr: iface.WGAddress{
IP: net.ParseIP("192.168.1.1"),
Network: &net.IPNet{
IP: net.ParseIP("192.168.1.0"),
Mask: net.CIDRMask(24, 32),
},
},
testIP: net.ParseIP("127.0.0.2"),
expected: true,
},
{
name: "Localhost standard address",
setupAddr: iface.WGAddress{
IP: net.ParseIP("192.168.1.1"),
Network: &net.IPNet{
IP: net.ParseIP("192.168.1.0"),
Mask: net.CIDRMask(24, 32),
},
},
testIP: net.ParseIP("127.0.0.1"),
expected: true,
},
{
name: "Localhost range edge",
setupAddr: iface.WGAddress{
IP: net.ParseIP("192.168.1.1"),
Network: &net.IPNet{
IP: net.ParseIP("192.168.1.0"),
Mask: net.CIDRMask(24, 32),
},
},
testIP: net.ParseIP("127.255.255.255"),
expected: true,
},
{ {
name: "Local IP matches", name: "Local IP matches",
setupAddr: iface.WGAddress{ setupAddr: iface.WGAddress{