package stripprefix import ( "context" "net/http" "net/http/httptest" "testing" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" "github.com/traefik/traefik/v2/pkg/config/dynamic" "github.com/traefik/traefik/v2/pkg/testhelpers" ) func TestStripPrefix(t *testing.T) { testCases := []struct { desc string config dynamic.StripPrefix path string expectedStatusCode int expectedPath string expectedRawPath string expectedHeader string }{ { desc: "no prefixes configured", config: dynamic.StripPrefix{ Prefixes: []string{}, }, path: "/noprefixes", expectedStatusCode: http.StatusOK, expectedPath: "/noprefixes", }, { desc: "wildcard (.*) requests (ForceSlash)", config: dynamic.StripPrefix{ Prefixes: []string{"/"}, ForceSlash: true, }, path: "/", expectedStatusCode: http.StatusOK, expectedPath: "/", expectedHeader: "/", }, { desc: "wildcard (.*) requests", config: dynamic.StripPrefix{ Prefixes: []string{"/"}, }, path: "/", expectedStatusCode: http.StatusOK, expectedPath: "", expectedHeader: "/", }, { desc: "prefix and path matching (ForceSlash)", config: dynamic.StripPrefix{ Prefixes: []string{"/stat"}, ForceSlash: true, }, path: "/stat", expectedStatusCode: http.StatusOK, expectedPath: "/", expectedHeader: "/stat", }, { desc: "prefix and path matching", config: dynamic.StripPrefix{ Prefixes: []string{"/stat"}, }, path: "/stat", expectedStatusCode: http.StatusOK, expectedPath: "", expectedHeader: "/stat", }, { desc: "path prefix on exactly matching path (ForceSlash)", config: dynamic.StripPrefix{ Prefixes: []string{"/stat/"}, ForceSlash: true, }, path: "/stat/", expectedStatusCode: http.StatusOK, expectedPath: "/", expectedHeader: "/stat/", }, { desc: "path prefix on exactly matching path", config: dynamic.StripPrefix{ Prefixes: []string{"/stat/"}, }, path: "/stat/", expectedStatusCode: http.StatusOK, expectedPath: "", expectedHeader: "/stat/", }, { desc: "path prefix on matching longer path", config: dynamic.StripPrefix{ Prefixes: []string{"/stat/"}, }, path: "/stat/us", expectedStatusCode: http.StatusOK, expectedPath: "/us", expectedHeader: "/stat/", }, { desc: "path prefix on mismatching path", config: dynamic.StripPrefix{ Prefixes: []string{"/stat/"}, }, path: "/status", expectedStatusCode: http.StatusOK, expectedPath: "/status", }, { desc: "general prefix on matching path", config: dynamic.StripPrefix{ Prefixes: []string{"/stat"}, }, path: "/stat/", expectedStatusCode: http.StatusOK, expectedPath: "/", expectedHeader: "/stat", }, { desc: "earlier prefix matching", config: dynamic.StripPrefix{ Prefixes: []string{"/stat", "/stat/us"}, }, path: "/stat/us", expectedStatusCode: http.StatusOK, expectedPath: "/us", expectedHeader: "/stat", }, { desc: "later prefix matching (ForceSlash)", config: dynamic.StripPrefix{ Prefixes: []string{"/mismatch", "/stat"}, ForceSlash: true, }, path: "/stat", expectedStatusCode: http.StatusOK, expectedPath: "/", expectedHeader: "/stat", }, { desc: "later prefix matching", config: dynamic.StripPrefix{ Prefixes: []string{"/mismatch", "/stat"}, }, path: "/stat", expectedStatusCode: http.StatusOK, expectedPath: "", expectedHeader: "/stat", }, { desc: "prefix matching within slash boundaries", config: dynamic.StripPrefix{ Prefixes: []string{"/stat"}, }, path: "/status", expectedStatusCode: http.StatusOK, expectedPath: "/us", expectedHeader: "/stat", }, { desc: "raw path is also stripped", config: dynamic.StripPrefix{ Prefixes: []string{"/stat"}, }, path: "/stat/a%2Fb", expectedStatusCode: http.StatusOK, expectedPath: "/a/b", expectedRawPath: "/a%2Fb", expectedHeader: "/stat", }, } for _, test := range testCases { test := test t.Run(test.desc, func(t *testing.T) { t.Parallel() var actualPath, actualRawPath, actualHeader, requestURI string next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { actualPath = r.URL.Path actualRawPath = r.URL.RawPath actualHeader = r.Header.Get(ForwardedPrefixHeader) requestURI = r.RequestURI }) handler, err := New(context.Background(), next, test.config, "foo-strip-prefix") require.NoError(t, err) req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost"+test.path, nil) req.RequestURI = req.URL.RequestURI() resp := &httptest.ResponseRecorder{Code: http.StatusOK} handler.ServeHTTP(resp, req) assert.Equal(t, test.expectedStatusCode, resp.Code, "Unexpected status code.") assert.Equal(t, test.expectedPath, actualPath, "Unexpected path.") assert.Equal(t, test.expectedRawPath, actualRawPath, "Unexpected raw path.") assert.Equal(t, test.expectedHeader, actualHeader, "Unexpected '%s' header.", ForwardedPrefixHeader) expectedRequestURI := test.expectedPath if test.expectedRawPath != "" { // go HTTP uses the raw path when existent in the RequestURI expectedRequestURI = test.expectedRawPath } if test.expectedPath == "" { expectedRequestURI = "/" } assert.Equal(t, expectedRequestURI, requestURI, "Unexpected request URI.") }) } }