Merge pull request #997 from FStelzer/issue844

Use the raw url path when proxying upstream requests

CHANGELOG.md

@@ -35,6 +35,7 @@
 - [#1317](https://github.com/oauth2-proxy/oauth2-proxy/pull/1317) Fix incorrect `</form>` tag on the sing_in page when *not* using a custom template (@jord1e)
 - [#1330](https://github.com/oauth2-proxy/oauth2-proxy/pull/1330) Allow specifying URL as input for custom sign in logo (@MaikuMori)
 - [#1357](https://github.com/oauth2-proxy/oauth2-proxy/pull/1357) Fix unsafe access to session variable (@harzallah)
+- [#997](https://github.com/oauth2-proxy/oauth2-proxy/pull/997) Allow passing the raw url path when proxying upstream requests - e.g. /%2F/ (@FStelzer)
 
 # V7.1.3
 

docs/docs/configuration/alpha_config.md

@@ -124,7 +124,7 @@ They may change between releases without notice.
 
 | Field | Type | Description |
 | ----- | ---- | ----------- |
-| `upstreams` | _[Upstreams](#upstreams)_ | Upstreams is used to configure upstream servers.<br/>Once a user is authenticated, requests to the server will be proxied to<br/>these upstream servers based on the path mappings defined in this list. |
+| `upstreamConfig` | _[UpstreamConfig](#upstreamconfig)_ | UpstreamConfig is used to configure upstream servers.<br/>Once a user is authenticated, requests to the server will be proxied to<br/>these upstream servers based on the path mappings defined in this list. |
 | `injectRequestHeaders` | _[[]Header](#header)_ | InjectRequestHeaders is used to configure headers that should be added<br/>to requests to upstream servers.<br/>Headers may source values from either the authenticated user's session<br/>or from a static secret value. |
 | `injectResponseHeaders` | _[[]Header](#header)_ | InjectResponseHeaders is used to configure headers that should be added<br/>to responses from the proxy.<br/>This is typically used when using the proxy as an external authentication<br/>provider in conjunction with another proxy such as NGINX and its<br/>auth_request module.<br/>Headers may source values from either the authenticated user's session<br/>or from a static secret value. |
 | `server` | _[Server](#server)_ | Server is used to configure the HTTP(S) server for the proxy application.<br/>You may choose to run both HTTP and HTTPS servers simultaneously.<br/>This can be done by setting the BindAddress and the SecureBindAddress simultaneously.<br/>To use the secure server you must configure a TLS certificate and key. |
@@ -364,7 +364,7 @@ TLS contains the information for loading a TLS certifcate and key.
 
 ### Upstream
 
-(**Appears on:** [Upstreams](#upstreams))
+(**Appears on:** [UpstreamConfig](#upstreamconfig))
 
 Upstream represents the configuration for an upstream server.
 Requests will be proxied to this upstream if the path matches the request path.
@@ -382,11 +382,13 @@ Requests will be proxied to this upstream if the path matches the request path.
 | `passHostHeader` | _bool_ | PassHostHeader determines whether the request host header should be proxied<br/>to the upstream server.<br/>Defaults to true. |
 | `proxyWebSockets` | _bool_ | ProxyWebSockets enables proxying of websockets to upstream servers<br/>Defaults to true. |
 
-### Upstreams
+### UpstreamConfig
-
-#### ([[]Upstream](#upstream) alias)
 
 (**Appears on:** [AlphaOptions](#alphaoptions))
 
-Upstreams is a collection of definitions for upstream servers.
+UpstreamConfig is a collection of definitions for upstream servers.
 
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `proxyRawPath` | _bool_ | ProxyRawPath will pass the raw url path to upstream allowing for url's<br/>like: "/%2F/" which would otherwise be redirected to "/" |
+| `upstreams` | _[[]Upstream](#upstream)_ | Upstreams represents the configuration for the upstream servers.<br/>Requests will be proxied to this upstream if the path matches the request path. |

main_test.go

@@ -2,8 +2,10 @@ package main
 
 import (
 	"errors"
+	"fmt"
 	"io/ioutil"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/oauth2-proxy/oauth2-proxy/v7/pkg/apis/options"
@@ -24,7 +26,9 @@ client_secret="b2F1dGgyLXByb3h5LWNsaWVudC1zZWNyZXQK"
 `
 
 	const testAlphaConfig = `
-upstreams:
+upstreamConfig:
+  proxyrawpath: false
+  upstreams:
   - id: /
     path: /
     uri: http://httpbin
@@ -100,14 +104,16 @@ redirect_url="http://localhost:4180/oauth2/callback"
 		opts.Cookie.Secure = false
 		opts.RawRedirectURL = "http://localhost:4180/oauth2/callback"
 
-		opts.UpstreamServers = options.Upstreams{
+		opts.UpstreamServers = options.UpstreamConfig{
-			{
+			Upstreams: []options.Upstream{
-				ID:              "/",
+				{
-				Path:            "/",
+					ID:              "/",
-				URI:             "http://httpbin",
+					Path:            "/",
-				FlushInterval:   durationPtr(options.DefaultUpstreamFlushInterval),
+					URI:             "http://httpbin",
-				PassHostHeader:  boolPtr(true),
+					FlushInterval:   durationPtr(options.DefaultUpstreamFlushInterval),
-				ProxyWebSockets: boolPtr(true),
+					PassHostHeader:  boolPtr(true),
+					ProxyWebSockets: boolPtr(true),
+				},
 			},
 		}
 
@@ -130,7 +136,7 @@ redirect_url="http://localhost:4180/oauth2/callback"
 		opts.InjectResponseHeaders = append(opts.InjectResponseHeaders, authHeader)
 
 		opts.Providers = options.Providers{
-			{
+			options.Provider{
 				ID:           "google=oauth2-proxy",
 				Type:         "google",
 				ClientSecret: "b2F1dGgyLXByb3h5LWNsaWVudC1zZWNyZXQK",
@@ -230,7 +236,7 @@ redirect_url="http://localhost:4180/oauth2/callback"
 			configContent:      testCoreConfig,
 			alphaConfigContent: testAlphaConfig + ":",
 			expectedOptions:    func() *options.Options { return nil },
-			expectedErr:        errors.New("failed to load alpha options: error unmarshalling config: error converting YAML to JSON: yaml: line 49: did not find expected key"),
+			expectedErr:        fmt.Errorf("failed to load alpha options: error unmarshalling config: error converting YAML to JSON: yaml: line %d: did not find expected key", strings.Count(testAlphaConfig, "\n")),
 		}),
 		Entry("with alpha configuration and bad core configuration", loadConfigurationTableInput{
 			configContent:      testCoreConfig + "unknown_field=\"something\"",

oauthproxy.go

@@ -265,7 +265,9 @@ func (p *OAuthProxy) setupServer(opts *options.Options) error {
 }
 
 func (p *OAuthProxy) buildServeMux(proxyPrefix string) {
-	r := mux.NewRouter()
+	// Use the encoded path here so we can have the option to pass it on in the upstream mux.
+	// Otherwise something like /%2F/ would be redirected to / here already.
+	r := mux.NewRouter().UseEncodedPath()
 	// Everything served by the router must go through the preAuthChain first.
 	r.Use(p.preAuthChain.Then)
 

oauthproxy_test.go

@@ -197,11 +197,13 @@ func TestBasicAuthPassword(t *testing.T) {
 
 	basicAuthPassword := "This is a secure password"
 	opts := baseTestOptions()
-	opts.UpstreamServers = options.Upstreams{
+	opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   providerServer.URL,
+			{
-			Path: "/",
+				ID:   providerServer.URL,
-			URI:  providerServer.URL,
+				Path: "/",
+				URI:  providerServer.URL,
+			},
 		},
 	}
 
@@ -346,15 +348,17 @@ func NewPassAccessTokenTest(opts PassAccessTokenTestOptions) (*PassAccessTokenTe
 		}))
 
 	patt.opts = baseTestOptions()
-	patt.opts.UpstreamServers = options.Upstreams{
+	patt.opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   patt.providerServer.URL,
+			{
-			Path: "/",
+				ID:   patt.providerServer.URL,
-			URI:  patt.providerServer.URL,
+				Path: "/",
+				URI:  patt.providerServer.URL,
+			},
 		},
 	}
 	if opts.ProxyUpstream.ID != "" {
-		patt.opts.UpstreamServers = append(patt.opts.UpstreamServers, opts.ProxyUpstream)
+		patt.opts.UpstreamServers.Upstreams = append(patt.opts.UpstreamServers.Upstreams, opts.ProxyUpstream)
 	}
 
 	patt.opts.Cookie.Secure = false
@@ -915,6 +919,15 @@ func TestUserInfoEndpointUnauthorizedOnNoCookieSetError(t *testing.T) {
 	assert.Equal(t, http.StatusUnauthorized, test.rw.Code)
 }
 
+func TestEncodedUrlsStayEncoded(t *testing.T) {
+	encodeTest, err := NewSignInPageTest(false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	code, _ := encodeTest.GetEndpoint("/%2F/test1/%2F/test2")
+	assert.Equal(t, 403, code)
+}
+
 func NewAuthOnlyEndpointTest(querystring string, modifiers ...OptionsModifier) (*ProcessCookieTest, error) {
 	pcTest, err := NewProcessCookieTestWithOptionsModifiers(modifiers...)
 	if err != nil {
@@ -1260,11 +1273,13 @@ func TestAuthSkippedForPreflightRequests(t *testing.T) {
 	t.Cleanup(upstreamServer.Close)
 
 	opts := baseTestOptions()
-	opts.UpstreamServers = options.Upstreams{
+	opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   upstreamServer.URL,
+			{
-			Path: "/",
+				ID:   upstreamServer.URL,
-			URI:  upstreamServer.URL,
+				Path: "/",
+				URI:  upstreamServer.URL,
+			},
 		},
 	}
 	opts.SkipAuthPreflight = true
@@ -1335,11 +1350,13 @@ func NewSignatureTest() (*SignatureTest, error) {
 	if err != nil {
 		return nil, err
 	}
-	opts.UpstreamServers = options.Upstreams{
+	opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   upstreamServer.URL,
+			{
-			Path: "/",
+				ID:   upstreamServer.URL,
-			URI:  upstreamServer.URL,
+				Path: "/",
+				URI:  upstreamServer.URL,
+			},
 		},
 	}
 
@@ -1771,11 +1788,13 @@ func Test_noCacheHeaders(t *testing.T) {
 	t.Cleanup(upstreamServer.Close)
 
 	opts := baseTestOptions()
-	opts.UpstreamServers = options.Upstreams{
+	opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   upstreamServer.URL,
+			{
-			Path: "/",
+				ID:   upstreamServer.URL,
-			URI:  upstreamServer.URL,
+				Path: "/",
+				URI:  upstreamServer.URL,
+			},
 		},
 	}
 	opts.SkipAuthRegex = []string{".*"}
@@ -2041,11 +2060,13 @@ func TestTrustedIPs(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			opts := baseTestOptions()
-			opts.UpstreamServers = options.Upstreams{
+			opts.UpstreamServers = options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:     "static",
+					{
-					Path:   "/",
+						ID:     "static",
-					Static: true,
+						Path:   "/",
+						Static: true,
+					},
 				},
 			}
 			opts.TrustedIPs = tt.trustedIPs
@@ -2234,11 +2255,13 @@ func TestAllowedRequest(t *testing.T) {
 	t.Cleanup(upstreamServer.Close)
 
 	opts := baseTestOptions()
-	opts.UpstreamServers = options.Upstreams{
+	opts.UpstreamServers = options.UpstreamConfig{
-		{
+		Upstreams: []options.Upstream{
-			ID:   upstreamServer.URL,
+			{
-			Path: "/",
+				ID:   upstreamServer.URL,
-			URI:  upstreamServer.URL,
+				Path: "/",
+				URI:  upstreamServer.URL,
+			},
 		},
 	}
 	opts.SkipAuthRegex = []string{
@@ -2349,11 +2372,13 @@ func TestProxyAllowedGroups(t *testing.T) {
 
 			test, err := NewProcessCookieTestWithOptionsModifiers(func(opts *options.Options) {
 				opts.Providers[0].AllowedGroups = tt.allowedGroups
-				opts.UpstreamServers = options.Upstreams{
+				opts.UpstreamServers = options.UpstreamConfig{
-					{
+					Upstreams: []options.Upstream{
-						ID:   upstreamServer.URL,
+						{
-						Path: "/",
+							ID:   upstreamServer.URL,
-						URI:  upstreamServer.URL,
+							Path: "/",
+							URI:  upstreamServer.URL,
+						},
 					},
 				}
 			})

pkg/apis/options/alpha_options.go

@@ -9,10 +9,10 @@ package options
 // They may change between releases without notice.
 // :::
 type AlphaOptions struct {
-	// Upstreams is used to configure upstream servers.
+	// UpstreamConfig is used to configure upstream servers.
 	// Once a user is authenticated, requests to the server will be proxied to
 	// these upstream servers based on the path mappings defined in this list.
-	Upstreams Upstreams `json:"upstreams,omitempty"`
+	UpstreamConfig UpstreamConfig `json:"upstreamConfig,omitempty"`
 
 	// InjectRequestHeaders is used to configure headers that should be added
 	// to requests to upstream servers.
@@ -48,19 +48,18 @@ type AlphaOptions struct {
 // MergeInto replaces alpha options in the Options struct with the values
 // from the AlphaOptions
 func (a *AlphaOptions) MergeInto(opts *Options) {
-	opts.UpstreamServers = a.Upstreams
+	opts.UpstreamServers = a.UpstreamConfig
 	opts.InjectRequestHeaders = a.InjectRequestHeaders
 	opts.InjectResponseHeaders = a.InjectResponseHeaders
 	opts.Server = a.Server
 	opts.MetricsServer = a.MetricsServer
 	opts.Providers = a.Providers
-
 }
 
 // ExtractFrom populates the fields in the AlphaOptions with the values from
 // the Options
 func (a *AlphaOptions) ExtractFrom(opts *Options) {
-	a.Upstreams = opts.UpstreamServers
+	a.UpstreamConfig = opts.UpstreamServers
 	a.InjectRequestHeaders = opts.InjectRequestHeaders
 	a.InjectResponseHeaders = opts.InjectResponseHeaders
 	a.Server = opts.Server

pkg/apis/options/legacy_options.go

@@ -114,13 +114,13 @@ func legacyUpstreamsFlagSet() *pflag.FlagSet {
 	return flagSet
 }
 
-func (l *LegacyUpstreams) convert() (Upstreams, error) {
+func (l *LegacyUpstreams) convert() (UpstreamConfig, error) {
-	upstreams := Upstreams{}
+	upstreams := UpstreamConfig{}
 
 	for _, upstreamString := range l.Upstreams {
 		u, err := url.Parse(upstreamString)
 		if err != nil {
-			return nil, fmt.Errorf("could not parse upstream %q: %v", upstreamString, err)
+			return UpstreamConfig{}, fmt.Errorf("could not parse upstream %q: %v", upstreamString, err)
 		}
 
 		if u.Path == "" {
@@ -169,7 +169,7 @@ func (l *LegacyUpstreams) convert() (Upstreams, error) {
 			upstream.FlushInterval = nil
 		}
 
-		upstreams = append(upstreams, upstream)
+		upstreams.Upstreams = append(upstreams.Upstreams, upstream)
 	}
 
 	return upstreams, nil

pkg/apis/options/legacy_options_test.go

@@ -26,35 +26,37 @@ var _ = Describe("Legacy Options", func() {
 
 			truth := true
 			staticCode := 204
-			opts.UpstreamServers = Upstreams{
+			opts.UpstreamServers = UpstreamConfig{
-				{
+				Upstreams: []Upstream{
-					ID:                    "/baz",
+					{
-					Path:                  "/baz",
+						ID:                    "/baz",
-					URI:                   "http://foo.bar/baz",
+						Path:                  "/baz",
-					FlushInterval:         &flushInterval,
+						URI:                   "http://foo.bar/baz",
-					InsecureSkipTLSVerify: true,
+						FlushInterval:         &flushInterval,
-					PassHostHeader:        &truth,
+						InsecureSkipTLSVerify: true,
-					ProxyWebSockets:       &truth,
+						PassHostHeader:        &truth,
-				},
+						ProxyWebSockets:       &truth,
-				{
+					},
-					ID:                    "/bar",
+					{
-					Path:                  "/bar",
+						ID:                    "/bar",
-					URI:                   "file:///var/lib/website",
+						Path:                  "/bar",
-					FlushInterval:         &flushInterval,
+						URI:                   "file:///var/lib/website",
-					InsecureSkipTLSVerify: true,
+						FlushInterval:         &flushInterval,
-					PassHostHeader:        &truth,
+						InsecureSkipTLSVerify: true,
-					ProxyWebSockets:       &truth,
+						PassHostHeader:        &truth,
-				},
+						ProxyWebSockets:       &truth,
-				{
+					},
-					ID:                    "static://204",
+					{
-					Path:                  "/",
+						ID:                    "static://204",
-					URI:                   "",
+						Path:                  "/",
-					Static:                true,
+						URI:                   "",
-					StaticCode:            &staticCode,
+						Static:                true,
-					FlushInterval:         nil,
+						StaticCode:            &staticCode,
-					InsecureSkipTLSVerify: false,
+						FlushInterval:         nil,
-					PassHostHeader:        nil,
+						InsecureSkipTLSVerify: false,
-					ProxyWebSockets:       nil,
+						PassHostHeader:        nil,
+						ProxyWebSockets:       nil,
+					},
 				},
 			}
 
@@ -124,7 +126,7 @@ var _ = Describe("Legacy Options", func() {
 	Context("Legacy Upstreams", func() {
 		type convertUpstreamsTableInput struct {
 			upstreamStrings   []string
-			expectedUpstreams Upstreams
+			expectedUpstreams []Upstream
 			errMsg            string
 		}
 
@@ -219,51 +221,51 @@ var _ = Describe("Legacy Options", func() {
 					Expect(err).ToNot(HaveOccurred())
 				}
 
-				Expect(upstreams).To(ConsistOf(in.expectedUpstreams))
+				Expect(upstreams.Upstreams).To(ConsistOf(in.expectedUpstreams))
 			},
 			Entry("with no upstreams", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{},
-				expectedUpstreams: Upstreams{},
+				expectedUpstreams: []Upstream{},
 				errMsg:            "",
 			}),
 			Entry("with a valid HTTP upstream", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{validHTTP},
-				expectedUpstreams: Upstreams{validHTTPUpstream},
+				expectedUpstreams: []Upstream{validHTTPUpstream},
 				errMsg:            "",
 			}),
 			Entry("with a HTTP upstream with an empty path", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{emptyPathHTTP},
-				expectedUpstreams: Upstreams{emptyPathHTTPUpstream},
+				expectedUpstreams: []Upstream{emptyPathHTTPUpstream},
 				errMsg:            "",
 			}),
 			Entry("with a valid File upstream with a fragment", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{validFileWithFragment},
-				expectedUpstreams: Upstreams{validFileWithFragmentUpstream},
+				expectedUpstreams: []Upstream{validFileWithFragmentUpstream},
 				errMsg:            "",
 			}),
 			Entry("with a valid static upstream", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{validStatic},
-				expectedUpstreams: Upstreams{validStaticUpstream},
+				expectedUpstreams: []Upstream{validStaticUpstream},
 				errMsg:            "",
 			}),
 			Entry("with an invalid static upstream, code is 200", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{invalidStatic},
-				expectedUpstreams: Upstreams{invalidStaticUpstream},
+				expectedUpstreams: []Upstream{invalidStaticUpstream},
 				errMsg:            "",
 			}),
 			Entry("with an invalid HTTP upstream", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{invalidHTTP},
-				expectedUpstreams: Upstreams{},
+				expectedUpstreams: []Upstream{},
 				errMsg:            invalidHTTPErrMsg,
 			}),
 			Entry("with an invalid HTTP upstream and other upstreams", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{validHTTP, invalidHTTP},
-				expectedUpstreams: Upstreams{},
+				expectedUpstreams: []Upstream{},
 				errMsg:            invalidHTTPErrMsg,
 			}),
 			Entry("with multiple valid upstreams", &convertUpstreamsTableInput{
 				upstreamStrings:   []string{validHTTP, validFileWithFragment, validStatic},
-				expectedUpstreams: Upstreams{validHTTPUpstream, validFileWithFragmentUpstream, validStaticUpstream},
+				expectedUpstreams: []Upstream{validHTTPUpstream, validFileWithFragmentUpstream, validStaticUpstream},
 				errMsg:            "",
 			}),
 		)

pkg/apis/options/load_test.go

@@ -469,11 +469,12 @@ sub:
 
 	It("should load a full example AlphaOptions", func() {
 		config := []byte(`
-upstreams:
+upstreamConfig:
-- id: httpbin
+  upstreams:
-  path: /
+  - id: httpbin
-  uri: http://httpbin
+    path: /
-  flushInterval: 500ms
+    uri: http://httpbin
+    flushInterval: 500ms
 injectRequestHeaders:
 - name: X-Forwarded-User
   values:
@@ -502,12 +503,14 @@ injectResponseHeaders:
 		flushInterval := Duration(500 * time.Millisecond)
 
 		Expect(into).To(Equal(&AlphaOptions{
-			Upstreams: []Upstream{
+			UpstreamConfig: UpstreamConfig{
-				{
+				Upstreams: []Upstream{
-					ID:            "httpbin",
+					{
-					Path:          "/",
+						ID:            "httpbin",
-					URI:           "http://httpbin",
+						Path:          "/",
-					FlushInterval: &flushInterval,
+						URI:           "http://httpbin",
+						FlushInterval: &flushInterval,
+					},
 				},
 			},
 			InjectRequestHeaders: []Header{

pkg/apis/options/options.go

@@ -41,7 +41,7 @@ type Options struct {
 
 	// Not used in the legacy config, name not allowed to match an external key (upstreams)
 	// TODO(JoelSpeed): Rename when legacy config is removed
-	UpstreamServers Upstreams `cfg:",internal"`
+	UpstreamServers UpstreamConfig `cfg:",internal"`
 
 	InjectRequestHeaders  []Header `cfg:",internal"`
 	InjectResponseHeaders []Header `cfg:",internal"`

pkg/apis/options/upstreams.go

@@ -7,8 +7,16 @@ const (
 	DefaultUpstreamFlushInterval = 1 * time.Second
 )
 
-// Upstreams is a collection of definitions for upstream servers.
+// UpstreamConfig is a collection of definitions for upstream servers.
-type Upstreams []Upstream
+type UpstreamConfig struct {
+	// ProxyRawPath will pass the raw url path to upstream allowing for url's
+	// like: "/%2F/" which would otherwise be redirected to "/"
+	ProxyRawPath bool `json:"proxyRawPath,omitempty"`
+
+	// Upstreams represents the configuration for the upstream servers.
+	// Requests will be proxied to this upstream if the path matches the request path.
+	Upstreams []Upstream `json:"upstreams,omitempty"`
+}
 
 // Upstream represents the configuration for an upstream server.
 // Requests will be proxied to this upstream if the path matches the request path.

pkg/upstream/proxy.go

@@ -22,12 +22,16 @@ type ProxyErrorHandler func(http.ResponseWriter, *http.Request, error)
 
 // NewProxy creates a new multiUpstreamProxy that can serve requests directed to
 // multiple upstreams.
-func NewProxy(upstreams options.Upstreams, sigData *options.SignatureData, writer pagewriter.Writer) (http.Handler, error) {
+func NewProxy(upstreams options.UpstreamConfig, sigData *options.SignatureData, writer pagewriter.Writer) (http.Handler, error) {
 	m := &multiUpstreamProxy{
 		serveMux: mux.NewRouter(),
 	}
 
-	for _, upstream := range sortByPathLongest(upstreams) {
+	if upstreams.ProxyRawPath {
+		m.serveMux.UseEncodedPath()
+	}
+
+	for _, upstream := range sortByPathLongest(upstreams.Upstreams) {
 		if upstream.Static {
 			if err := m.registerStaticResponseHandler(upstream, writer); err != nil {
 				return nil, fmt.Errorf("could not register static upstream %q: %v", upstream.ID, err)
@@ -153,7 +157,7 @@ func registerTrailingSlashHandler(serveMux *mux.Router) {
 // precedence (note this is the input to the rewrite logic).
 // This does not account for when a rewrite would actually make the path shorter.
 // This should maintain the sorting behaviour of the standard go serve mux.
-func sortByPathLongest(in options.Upstreams) options.Upstreams {
+func sortByPathLongest(in []options.Upstream) []options.Upstream {
 	sort.Slice(in, func(i, j int) bool {
 		iRW := in[i].RewriteTarget
 		jRW := in[j].RewriteTarget

pkg/upstream/proxy_test.go

@@ -16,94 +16,94 @@ import (
 )
 
 var _ = Describe("Proxy Suite", func() {
-	var upstreamServer http.Handler
+	type proxyTableInput struct {
+		target    string
+		response  testHTTPResponse
+		upstream  string
+		upstreams options.UpstreamConfig
+	}
 
 	Context("multiUpstreamProxy", func() {
-		BeforeEach(func() {
-			sigData := &options.SignatureData{Hash: crypto.SHA256, Key: "secret"}
-
-			writer := &pagewriter.WriterFuncs{
-				ProxyErrorFunc: func(rw http.ResponseWriter, _ *http.Request, _ error) {
-					rw.WriteHeader(502)
-					rw.Write([]byte("Proxy Error"))
-				},
-			}
-
-			ok := http.StatusOK
-			accepted := http.StatusAccepted
-
-			upstreams := options.Upstreams{
-				{
-					ID:   "http-backend",
-					Path: "/http/",
-					URI:  serverAddr,
-				},
-				{
-					ID:   "file-backend",
-					Path: "/files/",
-					URI:  fmt.Sprintf("file:///%s", filesDir),
-				},
-				{
-					ID:         "static-backend",
-					Path:       "/static/",
-					Static:     true,
-					StaticCode: &ok,
-				},
-				{
-					ID:         "static-backend-no-trailing-slash",
-					Path:       "/static",
-					Static:     true,
-					StaticCode: &accepted,
-				},
-				{
-					ID:         "static-backend-long",
-					Path:       "/static/long",
-					Static:     true,
-					StaticCode: &accepted,
-				},
-				{
-					ID:   "bad-http-backend",
-					Path: "/bad-http/",
-					URI:  "http://::1",
-				},
-				{
-					ID:         "single-path-backend",
-					Path:       "/single-path",
-					Static:     true,
-					StaticCode: &ok,
-				},
-				{
-					ID:            "backend-with-rewrite-prefix",
-					Path:          "^/rewrite-prefix/(.*)",
-					RewriteTarget: "/different/backend/path/$1",
-					URI:           serverAddr,
-				},
-				{
-					ID:   "double-match-plain",
-					Path: "/double-match/",
-					URI:  serverAddr,
-				},
-				{
-					ID:            "double-match-rewrite",
-					Path:          "^/double-match/(.*)",
-					RewriteTarget: "/double-match/rewrite/$1",
-					URI:           serverAddr,
-				},
-			}
-
-			var err error
-			upstreamServer, err = NewProxy(upstreams, sigData, writer)
-			Expect(err).ToNot(HaveOccurred())
-		})
-
-		type proxyTableInput struct {
-			target   string
-			response testHTTPResponse
-			upstream string
-		}
-
 		DescribeTable("Proxy ServeHTTP",
 			func(in *proxyTableInput) {
+				sigData := &options.SignatureData{Hash: crypto.SHA256, Key: "secret"}
+
+				writer := &pagewriter.WriterFuncs{
+					ProxyErrorFunc: func(rw http.ResponseWriter, _ *http.Request, _ error) {
+						rw.WriteHeader(502)
+						rw.Write([]byte("Proxy Error"))
+					},
+				}
+
+				ok := http.StatusOK
+				accepted := http.StatusAccepted
+
+				// Allows for specifying settings and even individual upstreams for specific tests and uses the default upstreams/configs otherwise
+				upstreams := in.upstreams
+				if len(in.upstreams.Upstreams) == 0 {
+					upstreams.Upstreams = []options.Upstream{
+						{
+							ID:   "http-backend",
+							Path: "/http/",
+							URI:  serverAddr,
+						},
+						{
+							ID:   "file-backend",
+							Path: "/files/",
+							URI:  fmt.Sprintf("file:///%s", filesDir),
+						},
+						{
+							ID:         "static-backend",
+							Path:       "/static/",
+							Static:     true,
+							StaticCode: &ok,
+						},
+						{
+							ID:         "static-backend-no-trailing-slash",
+							Path:       "/static",
+							Static:     true,
+							StaticCode: &accepted,
+						},
+						{
+							ID:         "static-backend-long",
+							Path:       "/static/long",
+							Static:     true,
+							StaticCode: &accepted,
+						},
+						{
+							ID:   "bad-http-backend",
+							Path: "/bad-http/",
+							URI:  "http://::1",
+						},
+						{
+							ID:         "single-path-backend",
+							Path:       "/single-path",
+							Static:     true,
+							StaticCode: &ok,
+						},
+						{
+							ID:            "backend-with-rewrite-prefix",
+							Path:          "^/rewrite-prefix/(.*)",
+							RewriteTarget: "/different/backend/path/$1",
+							URI:           serverAddr,
+						},
+						{
+							ID:   "double-match-plain",
+							Path: "/double-match/",
+							URI:  serverAddr,
+						},
+						{
+							ID:            "double-match-rewrite",
+							Path:          "^/double-match/(.*)",
+							RewriteTarget: "/double-match/rewrite/$1",
+							URI:           serverAddr,
+						},
+					}
+				}
+
+				upstreamServer, err := NewProxy(upstreams, sigData, writer)
+				Expect(err).ToNot(HaveOccurred())
+
 				req := middlewareapi.AddRequestScope(
 					httptest.NewRequest("", in.target, nil),
 					&middlewareapi.RequestScope{},
@@ -131,10 +131,12 @@ var _ = Describe("Proxy Suite", func() {
 				}
 
 				// Compare the reflected request to the upstream
-				request := testHTTPRequest{}
+				if body != nil {
-				Expect(json.Unmarshal(body, &request)).To(Succeed())
+					request := testHTTPRequest{}
-				testSanitizeRequestHeader(request.Header)
+					Expect(json.Unmarshal(body, &request)).To(Succeed())
-				Expect(request).To(Equal(in.response.request))
+					testSanitizeRequestHeader(request.Header)
+					Expect(request).To(Equal(in.response.request))
+				}
 			},
 			Entry("with a request to the HTTP service", &proxyTableInput{
 				target: "http://example.localhost/http/1234",
@@ -310,33 +312,58 @@ var _ = Describe("Proxy Suite", func() {
 				},
 				upstream: "double-match-rewrite",
 			}),
+			Entry("containing an escaped '/' without ProxyRawPath", &proxyTableInput{
+				target: "http://example.localhost/%2F/test1/%2F/test2",
+				response: testHTTPResponse{
+					code: 301,
+					header: map[string][]string{
+						"Location": {
+							"http://example.localhost/test1/test2",
+						},
+					},
+				},
+				upstream: "",
+			}),
+			Entry("containing an escaped '/' with ProxyRawPath", &proxyTableInput{
+				upstreams: options.UpstreamConfig{ProxyRawPath: true},
+				target:    "http://example.localhost/%2F/test1/%2F/test2",
+				response: testHTTPResponse{
+					code: 404,
+					header: map[string][]string{
+						"X-Content-Type-Options": {"nosniff"},
+						contentType:              {textPlainUTF8},
+					},
+					raw: "404 page not found\n",
+				},
+				upstream: "",
+			}),
 		)
 	})
 
 	Context("sortByPathLongest", func() {
 		type sortByPathLongestTableInput struct {
-			input          options.Upstreams
+			input          []options.Upstream
-			expectedOutput options.Upstreams
+			expectedOutput []options.Upstream
 		}
 
-		var httpPath = options.Upstream{
+		httpPath := options.Upstream{
 			Path: "/http/",
 		}
 
-		var httpSubPath = options.Upstream{
+		httpSubPath := options.Upstream{
 			Path: "/http/subpath/",
 		}
 
-		var longerPath = options.Upstream{
+		longerPath := options.Upstream{
 			Path: "/longer-than-http",
 		}
 
-		var shortPathWithRewrite = options.Upstream{
+		shortPathWithRewrite := options.Upstream{
 			Path:          "^/h/(.*)",
 			RewriteTarget: "/$1",
 		}
 
-		var shortSubPathWithRewrite = options.Upstream{
+		shortSubPathWithRewrite := options.Upstream{
 			Path:          "^/h/bar/(.*)",
 			RewriteTarget: "/$1",
 		}
@@ -346,40 +373,40 @@ var _ = Describe("Proxy Suite", func() {
 				Expect(sortByPathLongest(in.input)).To(Equal(in.expectedOutput))
 			},
 			Entry("with a mix of paths registered", sortByPathLongestTableInput{
-				input:          options.Upstreams{httpPath, httpSubPath, shortSubPathWithRewrite, longerPath, shortPathWithRewrite},
+				input:          []options.Upstream{httpPath, httpSubPath, shortSubPathWithRewrite, longerPath, shortPathWithRewrite},
-				expectedOutput: options.Upstreams{shortSubPathWithRewrite, shortPathWithRewrite, longerPath, httpSubPath, httpPath},
+				expectedOutput: []options.Upstream{shortSubPathWithRewrite, shortPathWithRewrite, longerPath, httpSubPath, httpPath},
 			}),
 			Entry("when a subpath is registered (in order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{httpSubPath, httpPath},
+				input:          []options.Upstream{httpSubPath, httpPath},
-				expectedOutput: options.Upstreams{httpSubPath, httpPath},
+				expectedOutput: []options.Upstream{httpSubPath, httpPath},
 			}),
 			Entry("when a subpath is registered (out of order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{httpPath, httpSubPath},
+				input:          []options.Upstream{httpPath, httpSubPath},
-				expectedOutput: options.Upstreams{httpSubPath, httpPath},
+				expectedOutput: []options.Upstream{httpSubPath, httpPath},
 			}),
 			Entry("when longer paths are registered (in order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{longerPath, httpPath},
+				input:          []options.Upstream{longerPath, httpPath},
-				expectedOutput: options.Upstreams{longerPath, httpPath},
+				expectedOutput: []options.Upstream{longerPath, httpPath},
 			}),
 			Entry("when longer paths are registered (out of order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{httpPath, longerPath},
+				input:          []options.Upstream{httpPath, longerPath},
-				expectedOutput: options.Upstreams{longerPath, httpPath},
+				expectedOutput: []options.Upstream{longerPath, httpPath},
 			}),
 			Entry("when a rewrite target is registered (in order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{shortPathWithRewrite, longerPath},
+				input:          []options.Upstream{shortPathWithRewrite, longerPath},
-				expectedOutput: options.Upstreams{shortPathWithRewrite, longerPath},
+				expectedOutput: []options.Upstream{shortPathWithRewrite, longerPath},
 			}),
 			Entry("when a rewrite target is registered (out of order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{longerPath, shortPathWithRewrite},
+				input:          []options.Upstream{longerPath, shortPathWithRewrite},
-				expectedOutput: options.Upstreams{shortPathWithRewrite, longerPath},
+				expectedOutput: []options.Upstream{shortPathWithRewrite, longerPath},
 			}),
 			Entry("with multiple rewrite targets registered (in order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{shortSubPathWithRewrite, shortPathWithRewrite},
+				input:          []options.Upstream{shortSubPathWithRewrite, shortPathWithRewrite},
-				expectedOutput: options.Upstreams{shortSubPathWithRewrite, shortPathWithRewrite},
+				expectedOutput: []options.Upstream{shortSubPathWithRewrite, shortPathWithRewrite},
 			}),
 			Entry("with multiple rewrite targets registered (out of order)", sortByPathLongestTableInput{
-				input:          options.Upstreams{shortPathWithRewrite, shortSubPathWithRewrite},
+				input:          []options.Upstream{shortPathWithRewrite, shortSubPathWithRewrite},
-				expectedOutput: options.Upstreams{shortSubPathWithRewrite, shortPathWithRewrite},
+				expectedOutput: []options.Upstream{shortSubPathWithRewrite, shortPathWithRewrite},
 			}),
 		)
 	})

pkg/validation/options_test.go

@@ -22,7 +22,7 @@ const (
 
 func testOptions() *options.Options {
 	o := options.NewOptions()
-	o.UpstreamServers = append(o.UpstreamServers, options.Upstream{
+	o.UpstreamServers.Upstreams = append(o.UpstreamServers.Upstreams, options.Upstream{
 		ID:   "upstream",
 		Path: "/",
 		URI:  "http://127.0.0.1:8080/",

pkg/validation/upstreams.go

@@ -7,12 +7,12 @@ import (
 	"github.com/oauth2-proxy/oauth2-proxy/v7/pkg/apis/options"
 )
 
-func validateUpstreams(upstreams options.Upstreams) []string {
+func validateUpstreams(upstreams options.UpstreamConfig) []string {
 	msgs := []string{}
 	ids := make(map[string]struct{})
 	paths := make(map[string]struct{})
 
-	for _, upstream := range upstreams {
+	for _, upstream := range upstreams.Upstreams {
 		msgs = append(msgs, validateUpstream(upstream, ids, paths)...)
 	}
 

pkg/validation/upstreams_test.go

@@ -11,7 +11,7 @@ import (
 
 var _ = Describe("Upstreams", func() {
 	type validateUpstreamTableInput struct {
-		upstreams  options.Upstreams
+		upstreams  options.UpstreamConfig
 		errStrings []string
 	}
 
@@ -54,88 +54,104 @@ var _ = Describe("Upstreams", func() {
 			Expect(validateUpstreams(o.upstreams)).To(ConsistOf(o.errStrings))
 		},
 		Entry("with no upstreams", &validateUpstreamTableInput{
-			upstreams:  options.Upstreams{},
+			upstreams:  options.UpstreamConfig{},
 			errStrings: []string{},
 		}),
 		Entry("with valid upstreams", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				validHTTPUpstream,
+				Upstreams: []options.Upstream{
-				validStaticUpstream,
+					validHTTPUpstream,
-				validFileUpstream,
+					validStaticUpstream,
+					validFileUpstream,
+				},
 			},
 			errStrings: []string{},
 		}),
 		Entry("with an empty ID", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "",
+					{
-					Path: "/foo",
+						ID:   "",
-					URI:  "http://localhost:8080",
+						Path: "/foo",
+						URI:  "http://localhost:8080",
+					},
 				},
 			},
 			errStrings: []string{emptyIDMsg},
 		}),
 		Entry("with an empty Path", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "",
+						ID:   "foo",
-					URI:  "http://localhost:8080",
+						Path: "",
+						URI:  "http://localhost:8080",
+					},
 				},
 			},
 			errStrings: []string{emptyPathMsg},
 		}),
 		Entry("with an empty Path", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "",
+						ID:   "foo",
-					URI:  "http://localhost:8080",
+						Path: "",
+						URI:  "http://localhost:8080",
+					},
 				},
 			},
 			errStrings: []string{emptyPathMsg},
 		}),
 		Entry("with an empty URI", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "/foo",
+						ID:   "foo",
-					URI:  "",
+						Path: "/foo",
+						URI:  "",
+					},
 				},
 			},
 			errStrings: []string{emptyURIMsg},
 		}),
 		Entry("with an invalid URI", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "/foo",
+						ID:   "foo",
-					URI:  ":",
+						Path: "/foo",
+						URI:  ":",
+					},
 				},
 			},
 			errStrings: []string{invalidURIMsg},
 		}),
 		Entry("with an invalid URI scheme", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "/foo",
+						ID:   "foo",
-					URI:  "ftp://foo",
+						Path: "/foo",
+						URI:  "ftp://foo",
+					},
 				},
 			},
 			errStrings: []string{invalidURISchemeMsg},
 		}),
 		Entry("with a static upstream and invalid optons", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:                    "foo",
+					{
-					Path:                  "/foo",
+						ID:                    "foo",
-					URI:                   "ftp://foo",
+						Path:                  "/foo",
-					Static:                true,
+						URI:                   "ftp://foo",
-					FlushInterval:         &flushInterval,
+						Static:                true,
-					PassHostHeader:        &truth,
+						FlushInterval:         &flushInterval,
-					ProxyWebSockets:       &truth,
+						PassHostHeader:        &truth,
-					InsecureSkipTLSVerify: true,
+						ProxyWebSockets:       &truth,
+						InsecureSkipTLSVerify: true,
+					},
 				},
 			},
 			errStrings: []string{
@@ -147,41 +163,47 @@ var _ = Describe("Upstreams", func() {
 			},
 		}),
 		Entry("with duplicate IDs", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo",
+					{
-					Path: "/foo1",
+						ID:   "foo",
-					URI:  "http://foo",
+						Path: "/foo1",
-				},
+						URI:  "http://foo",
-				{
+					},
-					ID:   "foo",
+					{
-					Path: "/foo2",
+						ID:   "foo",
-					URI:  "http://foo",
+						Path: "/foo2",
+						URI:  "http://foo",
+					},
 				},
 			},
 			errStrings: []string{multipleIDsMsg},
 		}),
 		Entry("with duplicate Paths", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:   "foo1",
+					{
-					Path: "/foo",
+						ID:   "foo1",
-					URI:  "http://foo",
+						Path: "/foo",
-				},
+						URI:  "http://foo",
-				{
+					},
-					ID:   "foo2",
+					{
-					Path: "/foo",
+						ID:   "foo2",
-					URI:  "http://foo",
+						Path: "/foo",
+						URI:  "http://foo",
+					},
 				},
 			},
 			errStrings: []string{multiplePathsMsg},
 		}),
 		Entry("when a static code is supplied without static", &validateUpstreamTableInput{
-			upstreams: options.Upstreams{
+			upstreams: options.UpstreamConfig{
-				{
+				Upstreams: []options.Upstream{
-					ID:         "foo",
+					{
-					Path:       "/foo",
+						ID:         "foo",
-					StaticCode: &staticCode200,
+						Path:       "/foo",
+						StaticCode: &staticCode200,
+					},
 				},
 			},
 			errStrings: []string{emptyURIMsg, staticCodeMsg},