151 lines
3.6 KiB
Go
151 lines
3.6 KiB
Go
package delivery_test
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import (
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"context"
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"log/slog"
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"net/http"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"sneak.berlin/go/webhooker/internal/delivery"
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)
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// newSSRFTestEngine builds an Engine whose shared client
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// carries the SSRF-safe transport, mirroring production.
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func newSSRFTestEngine() *delivery.Engine {
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log := slog.New(slog.DiscardHandler)
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client := &http.Client{
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Timeout: 30 * time.Second,
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Transport: delivery.NewTestGuard().
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NewSSRFSafeTransport(),
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}
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return delivery.NewTestEngine(log, client, 1)
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}
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// TestClientForRequest_TimeoutKeepsSSRFGuard asserts that a
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// client returned by clientForRequest for a config with a
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// per-target timeout still refuses connections to
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// private/reserved addresses (the timeout must not drop the
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// SSRF-safe transport).
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func TestClientForRequest_TimeoutKeepsSSRFGuard(t *testing.T) {
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t.Parallel()
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engine := newSSRFTestEngine()
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blocked := []string{
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loopbackHookURL,
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metadataURL,
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"http://[fe80::1]/hook",
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}
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for _, target := range blocked {
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t.Run(target, func(t *testing.T) {
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t.Parallel()
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cfg := &delivery.HTTPTargetConfig{
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URL: target,
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Timeout: 5,
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}
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client := engine.ExportClientForRequest(cfg, nil)
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require.NotSame(t, engine.ExportClient(), client,
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"a per-target timeout must yield a "+
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"distinct client",
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)
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assert.Equal(t,
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5*time.Second, client.Timeout,
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"the per-target timeout must be applied",
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)
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assert.Same(t,
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engine.ExportClient().Transport,
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client.Transport,
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"the SSRF-safe transport must be reused, "+
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"not dropped",
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)
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req, err := http.NewRequestWithContext(
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context.Background(),
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http.MethodPost, target, nil,
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)
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require.NoError(t, err)
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resp, doErr := client.Do(req)
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if resp != nil {
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_ = resp.Body.Close()
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}
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require.Error(t, doErr,
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"request to %s must be blocked", target,
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)
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assert.Contains(t, doErr.Error(), "blocked",
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"error must come from the SSRF guard",
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)
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})
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}
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}
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// TestClientForRequest_NoTimeoutUnchanged asserts that a
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// request with neither a per-target timeout nor an origin-scoped
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// header gets the shared SSRF-safe client unchanged: there is then
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// nothing for a redirect policy to strip.
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func TestClientForRequest_NoTimeoutUnchanged(t *testing.T) {
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t.Parallel()
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engine := newSSRFTestEngine()
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cfg := &delivery.HTTPTargetConfig{
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URL: "https://example.com/hook",
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}
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client := engine.ExportClientForRequest(cfg, nil)
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assert.Same(t, engine.ExportClient(), client,
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"without a per-target timeout the shared client "+
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"must be returned unchanged",
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)
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}
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// TestClientForRequest_HeadersKeepSSRFGuard asserts that the
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// redirect policy an origin-scoped header installs is added to a
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// client that still carries the SSRF-safe transport. The guard is
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// a dial hook, so keeping it is what makes each redirect hop pass
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// the private-IP check too.
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func TestClientForRequest_HeadersKeepSSRFGuard(t *testing.T) {
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t.Parallel()
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engine := newSSRFTestEngine()
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cfg := &delivery.HTTPTargetConfig{
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URL: "https://example.com/with-headers",
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Headers: map[string]string{
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"X-Api-Key": "configured",
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},
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}
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client := engine.ExportClientForRequest(
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cfg, []string{"X-Api-Key"},
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)
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require.NotNil(t, client.CheckRedirect,
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"an origin-scoped header must install a redirect policy",
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)
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assert.Same(t,
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engine.ExportClient().Transport, client.Transport,
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"the SSRF-safe transport must be reused, not dropped",
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)
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assert.Equal(t,
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engine.ExportClient().Timeout, client.Timeout,
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"the shared client's timeout must be inherited",
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)
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}
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