sneak
71774015db
check / check (push) Failing after 1s
Linux runs exactly as before when both bridge interfaces exist. When they do not, the lone default-route interface is monitored, and a single interface now draws a single UI pane instead of an empty second one. macOS is newly supported: a running VPN tunnel (utun) is monitored as the primary pane alongside the physical default-route interface, or the physical interface alone when no VPN is up. Detection lives in internal/netdetect: interface/route data types, pure selection logic keyed on OS name, and route parsers, all unit-tested on Linux for both platforms. Only the real route query and the per-platform TCP dial binding (source address on Linux, IP_BOUND_IF on macOS) are build-tagged. Ping argument construction is a pure, OS-keyed function. NewMonitor now takes a list of interfaces. Model: opus-4-8
311 lines
7.9 KiB
Go
311 lines
7.9 KiB
Go
package netdetect_test
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import (
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"reflect"
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"testing"
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"git.eeqj.de/sneak/rtnetmon/internal/netdetect"
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)
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// Values reused across the selection tests.
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const (
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osLinux = "linux"
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osDarwin = "darwin"
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ifaceGu0 = "gu0"
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ifaceBackhaul = "backhaul0"
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ifaceEth0 = "eth0"
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ifaceWlan0 = "wlan0"
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ifaceEn0 = "en0"
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ifaceUtun4 = "utun4"
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labelGu = "gu LAN - VPN outbound"
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labelCox = "Cox cable direct"
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labelDefault = "default route"
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addrEn0 = "192.168.1.20"
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)
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// linuxFlags describes the Linux bridge interfaces rtnetmon was built for.
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func linuxFlags() netdetect.Flags {
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return netdetect.Flags{
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IfaceA: ifaceGu0, LabelA: labelGu,
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IfaceB: ifaceBackhaul, LabelB: labelCox,
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}
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}
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// selectCase is one Select scenario with fake interfaces and routes.
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type selectCase struct {
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name string
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goos string
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ifaces []netdetect.Interface
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routes []netdetect.Route
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flags netdetect.Flags
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want []netdetect.Pane
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wantErr bool
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}
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// runSelectCases runs each case as a parallel subtest.
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func runSelectCases(t *testing.T, cases []selectCase) {
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t.Helper()
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for _, tt := range cases {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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got, err := netdetect.Select(tt.goos, tt.ifaces, tt.routes, tt.flags)
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if tt.wantErr {
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if err == nil {
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t.Fatalf("Select() expected error, got panes %v", got)
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}
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return
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}
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if err != nil {
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t.Fatalf("Select() unexpected error: %v", err)
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}
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if !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Select() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestSelectLinuxPanes(t *testing.T) {
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t.Parallel()
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runSelectCases(t, []selectCase{
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{
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name: "both bridge interfaces present",
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goos: osLinux,
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ifaces: []netdetect.Interface{
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{Name: ifaceGu0, Up: true},
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{Name: ifaceBackhaul, Up: true},
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{Name: ifaceEth0, Up: true},
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},
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routes: []netdetect.Route{{Iface: ifaceEth0, Default: true}},
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flags: linuxFlags(),
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want: []netdetect.Pane{
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{Name: ifaceGu0, Label: labelGu},
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{Name: ifaceBackhaul, Label: labelCox},
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},
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},
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{
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name: "no bridge interfaces, single default route",
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goos: osLinux,
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ifaces: []netdetect.Interface{
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{Name: ifaceEth0, Up: true},
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{Name: "lo", Up: true},
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},
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routes: []netdetect.Route{{Iface: ifaceEth0, Default: true}},
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flags: linuxFlags(),
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want: []netdetect.Pane{{Name: ifaceEth0, Label: labelDefault}},
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},
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{
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name: "single default route keeps explicit label",
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goos: osLinux,
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ifaces: []netdetect.Interface{{Name: ifaceWlan0, Up: true}},
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routes: []netdetect.Route{{Iface: ifaceWlan0, Default: true}},
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flags: netdetect.Flags{
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IfaceA: ifaceGu0, LabelA: "Home WiFi", LabelASet: true,
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IfaceB: ifaceBackhaul, LabelB: labelCox,
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},
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want: []netdetect.Pane{{Name: ifaceWlan0, Label: "Home WiFi"}},
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},
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})
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}
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func TestSelectLinuxErrors(t *testing.T) {
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t.Parallel()
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runSelectCases(t, []selectCase{
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{
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name: "only one bridge interface present",
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goos: osLinux,
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ifaces: []netdetect.Interface{
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{Name: ifaceGu0, Up: true},
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{Name: ifaceEth0, Up: true},
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},
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routes: []netdetect.Route{{Iface: ifaceEth0, Default: true}},
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flags: linuxFlags(),
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wantErr: true,
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},
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{
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name: "no bridge, no default route",
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goos: osLinux,
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ifaces: []netdetect.Interface{{Name: ifaceEth0, Up: true}},
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routes: nil,
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flags: linuxFlags(),
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wantErr: true,
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},
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{
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name: "no bridge, multiple default routes",
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goos: osLinux,
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ifaces: []netdetect.Interface{
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{Name: ifaceEth0, Up: true},
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{Name: "eth1", Up: true},
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},
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routes: []netdetect.Route{
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{Iface: ifaceEth0, Default: true},
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{Iface: "eth1", Default: true},
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},
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flags: linuxFlags(),
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wantErr: true,
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},
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})
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}
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func TestSelectDarwinPanes(t *testing.T) {
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t.Parallel()
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runSelectCases(t, []selectCase{
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{
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name: "vpn tunnel plus physical default route",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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{Name: ifaceUtun4, Up: true, IPv4: []string{"10.64.0.2"}},
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{Name: "utun0", Up: true, IPv4: nil},
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},
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routes: []netdetect.Route{
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{Iface: ifaceUtun4, Default: true},
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{Iface: ifaceEn0, Default: true},
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},
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flags: linuxFlags(),
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want: []netdetect.Pane{
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{Name: ifaceUtun4, Label: "VPN"},
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{Name: ifaceEn0, Label: labelDefault},
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},
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},
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{
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name: "vpn detected by routable address without its own route",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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{Name: "utun6", Up: true, IPv4: []string{"10.2.0.2"}},
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},
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routes: []netdetect.Route{{Iface: ifaceEn0, Default: true}},
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flags: linuxFlags(),
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want: []netdetect.Pane{
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{Name: "utun6", Label: "VPN"},
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{Name: ifaceEn0, Label: labelDefault},
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},
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},
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{
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name: "vpn pane honors explicit labels",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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{Name: ifaceUtun4, Up: true, IPv4: []string{"10.64.0.2"}},
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},
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routes: []netdetect.Route{
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{Iface: ifaceUtun4, Default: true},
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{Iface: ifaceEn0, Default: true},
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},
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flags: netdetect.Flags{
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LabelA: "Mullvad", LabelASet: true,
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LabelB: "Fiber", LabelBSet: true,
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},
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want: []netdetect.Pane{
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{Name: ifaceUtun4, Label: "Mullvad"},
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{Name: ifaceEn0, Label: "Fiber"},
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},
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},
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})
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}
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func TestSelectDarwinSingleAndErrors(t *testing.T) {
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t.Parallel()
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runSelectCases(t, []selectCase{
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{
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name: "no vpn, single physical default route",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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{Name: "utun0", Up: true, IPv4: nil},
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{Name: "utun1", Up: true, IPv4: []string{"169.254.1.1"}},
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},
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routes: []netdetect.Route{{Iface: ifaceEn0, Default: true}},
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flags: linuxFlags(),
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want: []netdetect.Pane{{Name: ifaceEn0, Label: labelDefault}},
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},
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{
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name: "no default route",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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},
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routes: nil,
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flags: linuxFlags(),
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wantErr: true,
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},
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{
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name: "two physical default routes",
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goos: osDarwin,
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ifaces: []netdetect.Interface{
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{Name: ifaceEn0, Up: true, IPv4: []string{addrEn0}},
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{Name: "en1", Up: true, IPv4: []string{"192.168.2.20"}},
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},
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routes: []netdetect.Route{
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{Iface: ifaceEn0, Default: true},
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{Iface: "en1", Default: true},
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},
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flags: linuxFlags(),
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wantErr: true,
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},
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{
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name: "unsupported operating system",
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goos: "windows",
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wantErr: true,
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},
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})
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}
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func TestParseIPRoute(t *testing.T) {
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t.Parallel()
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out := "default via 192.168.1.1 dev eth0 proto dhcp metric 100\n"
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got := netdetect.ParseIPRoute(out)
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want := []netdetect.Route{{Iface: ifaceEth0, Gateway: "192.168.1.1", Default: true}}
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if !reflect.DeepEqual(got, want) {
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t.Errorf("ParseIPRoute() = %v, want %v", got, want)
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}
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}
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func TestParseProcNetRoute(t *testing.T) {
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t.Parallel()
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out := "Iface\tDestination\tGateway\tFlags\tRefCnt\tUse\tMetric\tMask\n" +
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"eth0\t00000000\t0102A8C0\t0003\t0\t0\t100\t00000000\n" +
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"eth0\t0002A8C0\t00000000\t0001\t0\t0\t0\t00FFFFFF\n"
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got := netdetect.ParseProcNetRoute(out)
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want := []netdetect.Route{{Iface: ifaceEth0, Gateway: "192.168.2.1", Default: true}}
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if !reflect.DeepEqual(got, want) {
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t.Errorf("ParseProcNetRoute() = %v, want %v", got, want)
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}
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}
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func TestParseNetstat(t *testing.T) {
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t.Parallel()
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out := "Routing tables\n\nInternet:\n" +
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"Destination Gateway Flags Netif Expire\n" +
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"default 10.0.0.1 UGScg en0\n" +
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"default link#15 UCSg utun4\n" +
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"127.0.0.1 127.0.0.1 UH lo0\n"
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got := netdetect.ParseNetstat(out)
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want := []netdetect.Route{
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{Iface: ifaceEn0, Gateway: "10.0.0.1", Default: true},
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{Iface: ifaceUtun4, Gateway: "link#15", Default: true},
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}
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if !reflect.DeepEqual(got, want) {
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t.Errorf("ParseNetstat() = %v, want %v", got, want)
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}
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}
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