Fix Okta OIDC (#11718)

Using the OIDC connector with Okta would fail due to an issue in our
fork of go-oidc. Update this dependency to get the fix.

Additionally, clean up the logic for syncing the connector
configuration, which was using a context.Context in order to implement
a timeout. This can be expressed in a simpler way with time.After()

.gitignore

@@ -28,6 +28,8 @@ build
 _obj
 _test
 tmp
+target/
+test-logs/
 
 # Architecture specific extensions/prefixes
 [568vq].out
@@ -64,3 +66,6 @@ ssh.config
 
 # Code signing certificate for Windows binaries
 /windows-signing-cert.pfx
+
+# build tooling
+build.assets/tooling/bin/**

constants.go

@@ -441,6 +441,8 @@ const (
 	// Ping is the common backend for all Ping Identity-branded identity
 	// providers (including PingOne, PingFederate, etc).
 	Ping = "ping"
+	// Okta should be used for Okta OIDC providers.
+	Okta = "okta"
 )
 
 const (

go.mod

@@ -147,9 +147,7 @@ require (
 	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
 	github.com/gorilla/handlers v1.5.1 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.0.0-rc.2.0.20220308023801-e4a6915ea237 // indirect
-	github.com/hashicorp/go-uuid v1.0.2 // indirect
 	github.com/imdario/mergo v0.3.5 // indirect
 	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
 	github.com/jackc/pgio v1.0.0 // indirect
@@ -214,7 +212,7 @@ require (
 )
 
 replace (
-	github.com/coreos/go-oidc => github.com/gravitational/go-oidc v0.0.5
+	github.com/coreos/go-oidc => github.com/gravitational/go-oidc v0.0.6
 	github.com/gogo/protobuf => github.com/gravitational/protobuf v1.3.2-0.20201123192827-2b9fcfaffcbf
 	github.com/gravitational/teleport/api => ./api
 	github.com/siddontang/go-mysql v1.1.0 => github.com/gravitational/go-mysql v1.1.1-teleport.2

lib/auth/oidc.go

@@ -23,6 +23,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/url"
+	"time"
 
 	"github.com/gravitational/teleport"
 	"github.com/gravitational/teleport/api/constants"
@@ -78,36 +79,22 @@ func (a *Server) createOIDCClient(conn types.OIDCConnector) (*oidc.Client, error
 		return nil, trace.Wrap(err)
 	}
 
-	ctx, cancel := context.WithTimeout(context.Background(), defaults.WebHeadersTimeout)
-	defer cancel()
-
+	doneSyncing := make(chan struct{})
 	go func() {
-		defer cancel()
+		defer close(doneSyncing)
 		client.SyncProviderConfig(conn.GetIssuerURL())
 	}()
 
 	select {
-	case <-ctx.Done():
+	case <-doneSyncing:
+	case <-time.After(defaults.WebHeadersTimeout):
+		return nil, trace.ConnectionProblem(nil,
+			"timed out syncing oidc connector %v, ensure URL %q is valid and accessible and check configuration",
+			conn.GetName(), conn.GetIssuerURL())
 	case <-a.closeCtx.Done():
 		return nil, trace.ConnectionProblem(nil, "auth server is shutting down")
 	}
 
-	// Canceled is expected in case if sync provider config finishes faster
-	// than the deadline
-	if ctx.Err() != nil && ctx.Err() != context.Canceled {
-		var err error
-		if ctx.Err() == context.DeadlineExceeded {
-			err = trace.ConnectionProblem(err,
-				"failed to reach out to oidc connector %v, most likely URL %q is not valid or not accessible, check configuration and try to re-create the connector",
-				conn.GetName(), conn.GetIssuerURL())
-		} else {
-			err = trace.ConnectionProblem(err,
-				"unknown problem with connector %v, most likely URL %q is not valid or not accessible, check configuration and try to re-create the connector",
-				conn.GetName(), conn.GetIssuerURL())
-		}
-		return nil, err
-	}
-
 	a.lock.Lock()
 	defer a.lock.Unlock()
 
@@ -707,19 +694,19 @@ func (a *Server) getClaims(oidcClient *oidc.Client, connector types.OIDCConnecto
 
 // getOAuthClient returns a Oauth2 client from the oidc.Client.  If the connector is set as a Ping provider sets the Client Secret Post auth method
 func (a *Server) getOAuthClient(oidcClient *oidc.Client, connector types.OIDCConnector) (*oauth2.Client, error) {
-
 	oac, err := oidcClient.OAuthClient()
 	if err != nil {
 		return nil, trace.Wrap(err)
 	}
 
-	//If the default client secret basic is used the Ping OIDC
-	// will throw an error of multiple client credentials.  Even if you set in Ping
-	// to use Client Secret Post it will return to use client secret basic.
-	// Issue https://github.com/gravitational/teleport/issues/8374
-	if connector.GetProvider() == teleport.Ping {
+	// For OIDC, Ping and Okta will throw an error when the
+	// default client secret basic method is used.
+	// See: https://github.com/gravitational/teleport/issues/8374
+	switch connector.GetProvider() {
+	case teleport.Ping, teleport.Okta:
 		oac.SetAuthMethod(oauth2.AuthMethodClientSecretPost)
 	}
+
 	return oac, err
 }
 

vendor/modules.txt

@@ -286,7 +286,7 @@ github.com/cloudflare/cfssl/helpers
 github.com/cloudflare/cfssl/helpers/derhelpers
 github.com/cloudflare/cfssl/log
 github.com/cloudflare/cfssl/revoke
-# github.com/coreos/go-oidc v0.0.4 => github.com/gravitational/go-oidc v0.0.5
+# github.com/coreos/go-oidc v0.0.4 => github.com/gravitational/go-oidc v0.0.6
 ## explicit
 github.com/coreos/go-oidc/http
 github.com/coreos/go-oidc/jose
@@ -493,16 +493,12 @@ github.com/gravitational/trace/trail
 # github.com/gravitational/ttlmap v0.0.0-20171116003245-91fd36b9004c
 ## explicit
 github.com/gravitational/ttlmap
-# github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7
-## explicit
 # github.com/grpc-ecosystem/go-grpc-middleware/providers/openmetrics/v2 v2.0.0-20220308023801-e4a6915ea237
 ## explicit; go 1.15
 github.com/grpc-ecosystem/go-grpc-middleware/providers/openmetrics/v2
 # github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.0.0-rc.2.0.20220308023801-e4a6915ea237
 ## explicit; go 1.14
 github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors
-# github.com/hashicorp/go-uuid v1.0.2
-## explicit
 # github.com/hashicorp/golang-lru v0.5.4
 ## explicit; go 1.12
 github.com/hashicorp/golang-lru
@@ -1288,7 +1284,7 @@ sigs.k8s.io/structured-merge-diff/v4/value
 # sigs.k8s.io/yaml v1.2.0
 ## explicit; go 1.12
 sigs.k8s.io/yaml
-# github.com/coreos/go-oidc => github.com/gravitational/go-oidc v0.0.5
+# github.com/coreos/go-oidc => github.com/gravitational/go-oidc v0.0.6
 # github.com/gogo/protobuf => github.com/gravitational/protobuf v1.3.2-0.20201123192827-2b9fcfaffcbf
 # github.com/gravitational/teleport/api => ./api
 # github.com/sirupsen/logrus => github.com/gravitational/logrus v1.4.4-0.20210817004754-047e20245621