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WIP for saving authorize endpoint state into upstream state param

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Signed-off-by: Ryan Richard <richardry@vmware.com>
This commit is contained in:
Monis Khan 2020-11-10 17:58:00 -08:00 committed by Ryan Richard
parent 005225d5f9
commit dd190dede6
6 changed files with 183 additions and 66 deletions
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1
go.mod
View File

@ -14,6 +14,7 @@ require (
github.com/golang/mock v1.4.4
github.com/golangci/golangci-lint v1.31.0
github.com/google/go-cmp v0.5.2
github.com/gorilla/securecookie v1.1.1
github.com/ory/fosite v0.35.1
github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
github.com/sclevine/agouti v3.0.0+incompatible

2
go.sum
View File

@ -301,6 +301,8 @@ github.com/gookit/color v1.2.5/go.mod h1:AhIE+pS6D4Ql0SQWbBeXPHw7gY0/sjHoA4s/n1K
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=

68
internal/oidc/auth/auth_handler.go
View File

@ -9,30 +9,42 @@ import (
"net/http"
"time"
"go.pinniped.dev/internal/plog"
"github.com/ory/fosite"
"github.com/ory/fosite/handler/openid"
"github.com/ory/fosite/token/jwt"
"golang.org/x/oauth2"
"go.pinniped.dev/internal/httputil/httperr"
"go.pinniped.dev/internal/oidc/csrftoken"
"go.pinniped.dev/internal/oidc/provider"
"go.pinniped.dev/internal/oidcclient/nonce"
"go.pinniped.dev/internal/oidcclient/pkce"
"go.pinniped.dev/internal/oidcclient/state"
"golang.org/x/oauth2"
"go.pinniped.dev/internal/plog"
)
const (
// Just in case we need to make a breaking change to the format of the upstream state param,
// we are including a format version number. This gives the opportunity for a future version of Pinniped
// to have the consumer of this format decide to reject versions that it doesn't understand.
stateParamFormatVersion = "1"
)
type IDPListGetter interface {
GetIDPList() []provider.UpstreamOIDCIdentityProvider
}
type Encoder interface {
Encode(name string, value interface{}) (string, error)
}
func NewHandler(
issuer string,
idpListGetter IDPListGetter,
oauthHelper fosite.OAuth2Provider,
generateState func() (state.State, error),
generateCSRF func() (csrftoken.CSRFToken, error),
generatePKCE func() (pkce.Code, error),
generateNonce func() (nonce.Nonce, error),
encoder Encoder,
) http.Handler {
return httperr.HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
if r.Method != http.MethodPost && r.Method != http.MethodGet {
@ -77,7 +89,7 @@ func NewHandler(
return nil
}
stateValue, nonceValue, pkceValue, err := generateParams(generateState, generateNonce, generatePKCE)
csrfValue, nonceValue, pkceValue, err := generateValues(generateCSRF, generateNonce, generatePKCE)
if err != nil {
plog.InfoErr("authorize generate error", err)
return err
@ -92,9 +104,28 @@ func NewHandler(
Scopes: upstreamIDP.Scopes,
}
// `__Host` prefix has a special meaning. See https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#Cookie_prefixes
http.SetCookie(w, &http.Cookie{
Name: "__Host-pinniped-csrf",
Value: string(csrfValue),
HttpOnly: true,
SameSite: http.SameSiteStrictMode,
Secure: true,
})
stateParamData := upstreamStateParamData{
AuthParams: authorizeRequester.GetRequestForm().Encode(),
Nonce: nonceValue,
CSRFToken: csrfValue,
PKCECode: pkceValue,
StateParamFormatVersion: stateParamFormatVersion,
}
encodedStateParamValue, err := encoder.Encode("s", stateParamData)
// TODO handle the above error
http.Redirect(w, r,
upstreamOAuthConfig.AuthCodeURL(
stateValue.String(),
encodedStateParamValue,
oauth2.AccessTypeOffline,
nonceValue.Param(),
pkceValue.Challenge(),
@ -107,6 +138,15 @@ func NewHandler(
})
}
// Keep the JSON to a minimal size because the upstream provider could impose size limitations on the state param.
type upstreamStateParamData struct {
AuthParams string `json:"p"`
Nonce nonce.Nonce `json:"n"`
CSRFToken csrftoken.CSRFToken `json:"c"`
PKCECode pkce.Code `json:"k"`
StateParamFormatVersion string `json:"v"`
}
func chooseUpstreamIDP(idpListGetter IDPListGetter) (*provider.UpstreamOIDCIdentityProvider, error) {
allUpstreamIDPs := idpListGetter.GetIDPList()
if len(allUpstreamIDPs) == 0 {
@ -123,15 +163,15 @@ func chooseUpstreamIDP(idpListGetter IDPListGetter) (*provider.UpstreamOIDCIdent
return &allUpstreamIDPs[0], nil
}
func generateParams(
generateState func() (state.State, error),
func generateValues(
generateCSRF func() (csrftoken.CSRFToken, error),
generateNonce func() (nonce.Nonce, error),
generatePKCE func() (pkce.Code, error),
) (state.State, nonce.Nonce, pkce.Code, error) {
stateValue, err := generateState()
) (csrftoken.CSRFToken, nonce.Nonce, pkce.Code, error) {
csrfValue, err := generateCSRF()
if err != nil {
plog.InfoErr("error generating state param", err)
return "", "", "", httperr.Wrap(http.StatusInternalServerError, "error generating state param", err)
plog.InfoErr("error generating csrf param", err)
return "", "", "", httperr.Wrap(http.StatusInternalServerError, "error generating CSRF token", err)
}
nonceValue, err := generateNonce()
if err != nil {
@ -143,7 +183,7 @@ func generateParams(
plog.InfoErr("error generating PKCE param", err)
return "", "", "", httperr.Wrap(http.StatusInternalServerError, "error generating PKCE param", err)
}
return stateValue, nonceValue, pkceValue, nil
return csrfValue, nonceValue, pkceValue, nil
}
func fositeErrorForLog(err error) []interface{} {

143
internal/oidc/auth/auth_handler_test.go
View File

@ -13,16 +13,17 @@ import (
"strings"
"testing"
"github.com/gorilla/securecookie"
"github.com/ory/fosite"
"github.com/ory/fosite/storage"
"github.com/stretchr/testify/require"
"go.pinniped.dev/internal/here"
"go.pinniped.dev/internal/oidc"
"go.pinniped.dev/internal/oidc/csrftoken"
"go.pinniped.dev/internal/oidc/provider"
"go.pinniped.dev/internal/oidcclient/nonce"
"go.pinniped.dev/internal/oidcclient/pkce"
"go.pinniped.dev/internal/oidcclient/state"
)
func TestAuthorizationEndpoint(t *testing.T) {
@ -131,30 +132,37 @@ func TestAuthorizationEndpoint(t *testing.T) {
require.GreaterOrEqual(t, len(hmacSecret), 32, "fosite requires that hmac secrets have at least 32 bytes")
oauthHelper := oidc.FositeOauth2Helper(oauthStore, hmacSecret)
happyStateGenerator := func() (state.State, error) { return "test-state", nil }
happyPKCEGenerator := func() (pkce.Code, error) { return "test-pkce", nil }
happyNonceGenerator := func() (nonce.Nonce, error) { return "test-nonce", nil }
happyCSRF := "test-csrf"
happyPKCE := "test-pkce"
happyNonce := "test-nonce"
happyCSRFGenerator := func() (csrftoken.CSRFToken, error) { return csrftoken.CSRFToken(happyCSRF), nil }
happyPKCEGenerator := func() (pkce.Code, error) { return pkce.Code(happyPKCE), nil }
happyNonceGenerator := func() (nonce.Nonce, error) { return nonce.Nonce(happyNonce), nil }
// This is the PKCE challenge which is calculated as base64(sha256("test-pkce")). For example:
// $ echo -n test-pkce | shasum -a 256 | cut -d" " -f1 | xxd -r -p | base64 | cut -d"=" -f1
expectedUpstreamCodeChallenge := "VVaezYqum7reIhoavCHD1n2d-piN3r_mywoYj7fCR7g"
pathWithQuery := func(path string, query map[string]string) string {
var encoderHashKey = []byte("fake-hash-secret")
var encoder = securecookie.New(encoderHashKey, nil) // note that nil block key argument turns off encryption
encoder.SetSerializer(securecookie.JSONEncoder{})
encodeQuery := func(query map[string]string) string {
values := url.Values{}
for k, v := range query {
values[k] = []string{v}
}
pathToReturn := fmt.Sprintf("%s?%s", path, values.Encode())
return values.Encode()
}
pathWithQuery := func(path string, query map[string]string) string {
pathToReturn := fmt.Sprintf("%s?%s", path, encodeQuery(query))
require.NotRegexp(t, "^http", pathToReturn, "pathWithQuery helper was used to create a URL")
return pathToReturn
}
urlWithQuery := func(baseURL string, query map[string]string) string {
values := url.Values{}
for k, v := range query {
values[k] = []string{v}
}
urlToReturn := fmt.Sprintf("%s?%s", baseURL, values.Encode())
urlToReturn := fmt.Sprintf("%s?%s", baseURL, encodeQuery(query))
_, err := url.Parse(urlToReturn)
require.NoError(t, err, "urlWithQuery helper was used to create an illegal URL")
return urlToReturn
@ -189,26 +197,47 @@ func TestAuthorizationEndpoint(t *testing.T) {
return pathWithQuery("/some/path", copyOfHappyGetRequestQueryMap)
}
// We're going to use this value to make assertions, so specify the exact expected value.
happyUpstreamStateParam, err := encoder.Encode("s",
// Ensure that the order of the serialized fields is exactly this order, so we can make simpler equality assertions below.
struct {
P string `json:"p"`
N string `json:"n"`
C string `json:"c"`
K string `json:"k"`
V string `json:"v"`
}{
P: encodeQuery(happyGetRequestQueryMap),
N: happyNonce,
C: happyCSRF,
K: happyPKCE,
V: "1",
},
)
require.NoError(t, err)
happyGetRequestExpectedRedirectLocation := urlWithQuery(upstreamAuthURL.String(),
map[string]string{
"response_type": "code",
"access_type": "offline",
"scope": "scope1 scope2",
"client_id": "some-client-id",
"state": "test-state",
"nonce": "test-nonce",
"state": happyUpstreamStateParam,
"nonce": happyNonce,
"code_challenge": expectedUpstreamCodeChallenge,
"code_challenge_method": "S256",
"redirect_uri": issuer + "/callback/some-idp",
},
)
happyCSRFSetCookieHeaderValue := fmt.Sprintf("__Host-pinniped-csrf=%s; HttpOnly; Secure; SameSite=Strict", happyCSRF)
type testCase struct {
name string
issuer string
idpListGetter provider.DynamicUpstreamIDPProvider
generateState func() (state.State, error)
generateCSRF func() (csrftoken.CSRFToken, error)
generatePKCE func() (pkce.Code, error)
generateNonce func() (nonce.Nonce, error)
method string
@ -216,11 +245,12 @@ func TestAuthorizationEndpoint(t *testing.T) {
contentType string
body string
wantStatus int
wantContentType string
wantBodyString string
wantBodyJSON string
wantLocationHeader string
wantStatus int
wantContentType string
wantBodyString string
wantBodyJSON string
wantLocationHeader string
wantCSRFCookieHeader string
}
tests := []testCase{
@ -228,7 +258,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "happy path using GET",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -239,13 +269,14 @@ func TestAuthorizationEndpoint(t *testing.T) {
html.EscapeString(happyGetRequestExpectedRedirectLocation),
"\n\n",
),
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantCSRFCookieHeader: happyCSRFSetCookieHeaderValue,
},
{
name: "happy path using POST",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodPost,
@ -260,16 +291,17 @@ func TestAuthorizationEndpoint(t *testing.T) {
"code_challenge_method": []string{"S256"},
"redirect_uri": []string{downstreamRedirectURI},
}.Encode(),
wantStatus: http.StatusFound,
wantContentType: "",
wantBodyString: "",
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantStatus: http.StatusFound,
wantContentType: "",
wantBodyString: "",
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantCSRFCookieHeader: happyCSRFSetCookieHeaderValue,
},
{
name: "downstream client does not exist",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -282,7 +314,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "downstream redirect uri does not match what is configured for client",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -294,10 +326,10 @@ func TestAuthorizationEndpoint(t *testing.T) {
wantBodyJSON: fositeInvalidRedirectURIErrorBody,
},
{
name: "downstream redirect uri matches what is configured for client except for the port number",
name: "happy path when downstream redirect uri matches what is configured for client except for the port number",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -310,13 +342,14 @@ func TestAuthorizationEndpoint(t *testing.T) {
html.EscapeString(happyGetRequestExpectedRedirectLocation),
"\n\n",
),
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantLocationHeader: happyGetRequestExpectedRedirectLocation,
wantCSRFCookieHeader: happyCSRFSetCookieHeaderValue,
},
{
name: "response type is unsupported",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -330,7 +363,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "downstream scopes do not match what is configured for client",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -344,7 +377,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "missing response type in request",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -358,7 +391,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "missing client id in request",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -371,7 +404,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "missing PKCE code_challenge in request", // See https://tools.ietf.org/html/rfc7636#section-4.4.1
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -385,7 +418,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "invalid value for PKCE code_challenge_method in request", // https://tools.ietf.org/html/rfc7636#section-4.3
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -399,7 +432,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "when PKCE code_challenge_method in request is `plain`", // https://tools.ietf.org/html/rfc7636#section-4.3
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -413,7 +446,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "missing PKCE code_challenge_method in request", // See https://tools.ietf.org/html/rfc7636#section-4.4.1
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -429,7 +462,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "prompt param is not allowed to have none and another legal value at the same time",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -443,7 +476,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "state does not have enough entropy",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -454,23 +487,23 @@ func TestAuthorizationEndpoint(t *testing.T) {
wantBodyString: "",
},
{
name: "error while generating state",
name: "error while generating CSRF token",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: func() (state.State, error) { return "", fmt.Errorf("some state generator error") },
generateCSRF: func() (csrftoken.CSRFToken, error) { return "", fmt.Errorf("some csrf generator error") },
generatePKCE: happyPKCEGenerator,
generateNonce: happyNonceGenerator,
method: http.MethodGet,
path: happyGetRequestPath,
wantStatus: http.StatusInternalServerError,
wantContentType: "text/plain; charset=utf-8",
wantBodyString: "Internal Server Error: error generating state param\n",
wantBodyString: "Internal Server Error: error generating CSRF token\n",
},
{
name: "error while generating nonce",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: happyPKCEGenerator,
generateNonce: func() (nonce.Nonce, error) { return "", fmt.Errorf("some nonce generator error") },
method: http.MethodGet,
@ -483,7 +516,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
name: "error while generating PKCE",
issuer: issuer,
idpListGetter: newIDPListGetter(upstreamOIDCIdentityProvider),
generateState: happyStateGenerator,
generateCSRF: happyCSRFGenerator,
generatePKCE: func() (pkce.Code, error) { return "", fmt.Errorf("some PKCE generator error") },
generateNonce: happyNonceGenerator,
method: http.MethodGet,
@ -562,13 +595,23 @@ func TestAuthorizationEndpoint(t *testing.T) {
if test.wantLocationHeader != "" {
actualLocation := rsp.Header().Get("Location")
requireEqualURLs(t, actualLocation, test.wantLocationHeader)
} else {
require.Empty(t, rsp.Header().Values("Location"))
}
if test.wantCSRFCookieHeader != "" {
require.Len(t, rsp.Header().Values("Set-Cookie"), 1)
actualCookie := rsp.Header().Get("Set-Cookie")
require.Equal(t, actualCookie, test.wantCSRFCookieHeader)
} else {
require.Empty(t, rsp.Header().Values("Set-Cookie"))
}
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
subject := NewHandler(test.issuer, test.idpListGetter, oauthHelper, test.generateState, test.generatePKCE, test.generateNonce)
subject := NewHandler(test.issuer, test.idpListGetter, oauthHelper, test.generateCSRF, test.generatePKCE, test.generateNonce, encoder)
runOneTestCase(t, test, subject)
})
}
@ -577,7 +620,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
test := tests[0]
require.Equal(t, "happy path using GET", test.name) // re-use the happy path test case
subject := NewHandler(test.issuer, test.idpListGetter, oauthHelper, test.generateState, test.generatePKCE, test.generateNonce)
subject := NewHandler(test.issuer, test.idpListGetter, oauthHelper, test.generateCSRF, test.generatePKCE, test.generateNonce, encoder)
runOneTestCase(t, test, subject)
@ -597,8 +640,8 @@ func TestAuthorizationEndpoint(t *testing.T) {
"access_type": "offline",
"scope": "other-scope1 other-scope2",
"client_id": "some-other-client-id",
"state": "test-state",
"nonce": "test-nonce",
"state": happyUpstreamStateParam,
"nonce": happyNonce,
"code_challenge": expectedUpstreamCodeChallenge,
"code_challenge_method": "S256",
"redirect_uri": issuer + "/callback/some-other-idp",

24
internal/oidc/csrftoken/csrftoken.go Normal file
View File

@ -0,0 +1,24 @@
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package csrftoken
import (
"crypto/rand"
"encoding/hex"
"fmt"
"io"
)
// Generate generates a new random CSRF token value.
func Generate() (CSRFToken, error) { return generate(rand.Reader) }
func generate(rand io.Reader) (CSRFToken, error) {
var buf [32]byte
if _, err := io.ReadFull(rand, buf[:]); err != nil {
return "", fmt.Errorf("could not generate CSRFToken: %w", err)
}
return CSRFToken(hex.EncodeToString(buf[:])), nil
}
type CSRFToken string

11
internal/oidc/provider/manager/manager.go
View File

@ -8,6 +8,9 @@ import (
"strings"
"sync"
"github.com/gorilla/securecookie"
"go.pinniped.dev/internal/oidc/csrftoken"
"github.com/ory/fosite"
"github.com/ory/fosite/storage"
@ -18,7 +21,6 @@ import (
"go.pinniped.dev/internal/oidc/provider"
"go.pinniped.dev/internal/oidcclient/nonce"
"go.pinniped.dev/internal/oidcclient/pkce"
"go.pinniped.dev/internal/oidcclient/state"
"go.pinniped.dev/internal/plog"
)
@ -78,8 +80,13 @@ func (m *Manager) SetProviders(oidcProviders ...*provider.OIDCProvider) {
}
oauthHelper := oidc.FositeOauth2Helper(oauthStore, []byte("some secret - must have at least 32 bytes")) // TODO replace this secret
var encoderHashKey = []byte("fake-hash-secret") // TODO fix this
var encoderBlockKey = []byte("16-bytes-aaaaaaa") // TODO fix this
var encoder = securecookie.New(encoderHashKey, encoderBlockKey)
encoder.SetSerializer(securecookie.JSONEncoder{})
authURL := strings.ToLower(incomingProvider.IssuerHost()) + "/" + incomingProvider.IssuerPath() + oidc.AuthorizationEndpointPath
m.providerHandlers[authURL] = auth.NewHandler(incomingProvider.Issuer(), m.idpListGetter, oauthHelper, state.Generate, pkce.Generate, nonce.Generate)
m.providerHandlers[authURL] = auth.NewHandler(incomingProvider.Issuer(), m.idpListGetter, oauthHelper, csrftoken.Generate, pkce.Generate, nonce.Generate, encoder)
plog.Debug("oidc provider manager added or updated issuer", "issuer", incomingProvider.Issuer())
}