mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-12-22 06:44:27 +03:00
8166c4bc33
Merge in DNS/adguard-home from upd-go to master
Squashed commit of the following:
commit 8edfb5cc3466c1e4ee2eacae5157bd93c135a284
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Wed Aug 3 14:25:45 2022 +0300
all: imp docs; fmt
commit 080b8a85c02afbdaa079c0da47cb7b6311d50fbe
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Tue Aug 2 20:51:20 2022 +0300
all: upd go, imp generic code
114 lines
2.8 KiB
Go
114 lines
2.8 KiB
Go
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
|
|
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
|
|
|
|
package dhcpd
|
|
|
|
import (
|
|
"net"
|
|
"testing"
|
|
|
|
"github.com/AdguardTeam/golibs/testutil"
|
|
"github.com/google/gopacket"
|
|
"github.com/google/gopacket/layers"
|
|
"github.com/insomniacslk/dhcp/dhcpv4"
|
|
"github.com/mdlayher/packet"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestDHCPConn_WriteTo_common(t *testing.T) {
|
|
respData := (&dhcpv4.DHCPv4{}).ToBytes()
|
|
udpAddr := &net.UDPAddr{
|
|
IP: net.IP{1, 2, 3, 4},
|
|
Port: dhcpv4.ClientPort,
|
|
}
|
|
|
|
t.Run("unicast_ip", func(t *testing.T) {
|
|
writeTo := func(_ []byte, addr net.Addr) (_ int, _ error) {
|
|
assert.Equal(t, udpAddr, addr)
|
|
|
|
return 0, nil
|
|
}
|
|
|
|
conn := &dhcpConn{udpConn: &fakePacketConn{writeTo: writeTo}}
|
|
|
|
_, err := conn.WriteTo(respData, udpAddr)
|
|
assert.NoError(t, err)
|
|
})
|
|
|
|
t.Run("unexpected_addr_type", func(t *testing.T) {
|
|
type unexpectedAddrType struct {
|
|
net.Addr
|
|
}
|
|
|
|
conn := &dhcpConn{}
|
|
n, err := conn.WriteTo(nil, &unexpectedAddrType{})
|
|
require.Error(t, err)
|
|
|
|
testutil.AssertErrorMsg(t, "peer is of unexpected type *dhcpd.unexpectedAddrType", err)
|
|
assert.Zero(t, n)
|
|
})
|
|
}
|
|
|
|
func TestBuildEtherPkt(t *testing.T) {
|
|
conn := &dhcpConn{
|
|
srcMAC: net.HardwareAddr{1, 2, 3, 4, 5, 6},
|
|
srcIP: net.IP{1, 2, 3, 4},
|
|
}
|
|
peer := &dhcpUnicastAddr{
|
|
Addr: packet.Addr{HardwareAddr: net.HardwareAddr{6, 5, 4, 3, 2, 1}},
|
|
yiaddr: net.IP{4, 3, 2, 1},
|
|
}
|
|
payload := (&dhcpv4.DHCPv4{}).ToBytes()
|
|
|
|
t.Run("success", func(t *testing.T) {
|
|
pkt, err := conn.buildEtherPkt(payload, peer)
|
|
require.NoError(t, err)
|
|
|
|
assert.NotEmpty(t, pkt)
|
|
|
|
actualPkt := gopacket.NewPacket(pkt, layers.LayerTypeEthernet, gopacket.DecodeOptions{
|
|
NoCopy: true,
|
|
})
|
|
require.NotNil(t, actualPkt)
|
|
|
|
wantTypes := []gopacket.LayerType{
|
|
layers.LayerTypeEthernet,
|
|
layers.LayerTypeIPv4,
|
|
layers.LayerTypeUDP,
|
|
layers.LayerTypeDHCPv4,
|
|
}
|
|
actualLayers := actualPkt.Layers()
|
|
require.Len(t, actualLayers, len(wantTypes))
|
|
|
|
for i, wantType := range wantTypes {
|
|
layer := actualLayers[i]
|
|
require.NotNil(t, layer)
|
|
|
|
assert.Equal(t, wantType, layer.LayerType())
|
|
}
|
|
})
|
|
|
|
t.Run("non-serializable", func(t *testing.T) {
|
|
// Create an invalid DHCP packet.
|
|
invalidPayload := []byte{1, 2, 3, 4}
|
|
pkt, err := conn.buildEtherPkt(invalidPayload, nil)
|
|
require.Error(t, err)
|
|
|
|
assert.ErrorIs(t, err, errInvalidPktDHCP)
|
|
assert.Empty(t, pkt)
|
|
})
|
|
|
|
t.Run("serializing_error", func(t *testing.T) {
|
|
// Create a peer with invalid MAC.
|
|
badPeer := &dhcpUnicastAddr{
|
|
Addr: packet.Addr{HardwareAddr: net.HardwareAddr{5, 4, 3, 2, 1}},
|
|
yiaddr: net.IP{4, 3, 2, 1},
|
|
}
|
|
|
|
pkt, err := conn.buildEtherPkt(payload, badPeer)
|
|
require.Error(t, err)
|
|
|
|
assert.Empty(t, pkt)
|
|
})
|
|
}
|