db, client: add data model for trusted peers

Trusted Peers are clients that are authorized to mint tokens
for another client.

admin/api.go

@@ -141,7 +141,7 @@ func (a *AdminAPI) CreateClient(req adminschema.ClientCreateRequest) (adminschem
 	}
 
 	// metadata is guaranteed to have at least one redirect_uri by earlier validation.
-	creds, err := a.clientManager.New(cli)
+	creds, err := a.clientManager.New(cli, nil)
 	if err != nil {
 		return adminschema.ClientCreateResponse{}, mapError(err)
 	}

client/client.go

@@ -15,6 +15,7 @@ import (
 )
 
 var (
+	ErrorInvalidClientID       = errors.New("not a valid client ID")
 	ErrorInvalidRedirectURL    = errors.New("not a valid redirect url for the given client")
 	ErrorCantChooseRedirectURL = errors.New("must provide a redirect url; client has many")
 	ErrorNoValidRedirectURLs   = errors.New("no valid redirect URLs for this client.")
@@ -60,6 +61,12 @@ type ClientRepo interface {
 	New(tx repo.Transaction, client Client) (*oidc.ClientCredentials, error)
 
 	Update(tx repo.Transaction, client Client) error
+
+	// GetTrustedPeers returns the list of clients authorized to mint ID token for the given client.
+	GetTrustedPeers(tx repo.Transaction, clientID string) ([]string, error)
+
+	// SetTrustedPeers sets the list of clients authorized to mint ID token for the given client.
+	SetTrustedPeers(tx repo.Transaction, clientID string, clientIDs []string) error
 }
 
 // ValidRedirectURL returns the passed in URL if it is present in the redirectURLs list, and returns an error otherwise.

client/manager/manager.go

@@ -21,6 +21,10 @@ const (
 	maxSecretLength = 72
 )
 
+type ClientOptions struct {
+	TrustedPeers []string
+}
+
 type SecretGenerator func() ([]byte, error)
 
 func DefaultSecretGenerator() ([]byte, error) {
@@ -63,7 +67,7 @@ func NewClientManager(clientRepo client.ClientRepo, txnFactory repo.TransactionF
 	}
 }
 
-func (m *ClientManager) New(cli client.Client) (*oidc.ClientCredentials, error) {
+func (m *ClientManager) New(cli client.Client, options *ClientOptions) (*oidc.ClientCredentials, error) {
 	tx, err := m.begin()
 	if err != nil {
 		return nil, err
@@ -83,6 +87,13 @@ func (m *ClientManager) New(cli client.Client) (*oidc.ClientCredentials, error)
 		return nil, err
 	}
 
+	if options != nil && len(options.TrustedPeers) > 0 {
+		err = m.clientRepo.SetTrustedPeers(tx, creds.ID, options.TrustedPeers)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	err = tx.Commit()
 	if err != nil {
 		return nil, err

client/manager/manager_test.go

@@ -132,7 +132,7 @@ func TestAuthenticate(t *testing.T) {
 	cli := client.Client{
 		Metadata: cm,
 	}
-	cc, err := f.mgr.New(cli)
+	cc, err := f.mgr.New(cli, nil)
 	if err != nil {
 		t.Fatalf(err.Error())
 	}

cmd/dexctl/driver_db.go

@@ -34,7 +34,7 @@ func (d *dbDriver) NewClient(meta oidc.ClientMetadata) (*oidc.ClientCredentials,
 	cli := client.Client{
 		Metadata: meta,
 	}
-	return d.ciManager.New(cli)
+	return d.ciManager.New(cli, nil)
 }
 
 func (d *dbDriver) ConnectorConfigs() ([]connector.ConnectorConfig, error) {

db/client.go

@@ -17,6 +17,7 @@ import (
 
 const (
 	clientTableName      = "client_identity"
+	trustedPeerTableName = "trusted_peers"
 
 	// postgres error codes
 	pgErrorCodeUniqueViolation = "23505" // unique_violation
@@ -29,6 +30,13 @@ func init() {
 		autoinc: false,
 		pkey:    []string{"id"},
 	})
+
+	register(table{
+		name:    trustedPeerTableName,
+		model:   trustedPeerModel{},
+		autoinc: false,
+		pkey:    []string{"client_id", "trusted_client_id"},
+	})
 }
 
 func newClientModel(cli client.Client) (*clientModel, error) {
@@ -58,6 +66,11 @@ type clientModel struct {
 	DexAdmin bool   `db:"dex_admin"`
 }
 
+type trustedPeerModel struct {
+	ClientID        string `db:"client_id"`
+	TrustedClientID string `db:"trusted_client_id"`
+}
+
 func (m *clientModel) Client() (*client.Client, error) {
 	ci := client.Client{
 		Credentials: oidc.ClientCredentials{
@@ -254,3 +267,63 @@ func (r *clientRepo) update(tx repo.Transaction, cli client.Client) error {
 	_, err = ex.Update(cm)
 	return err
 }
+
+func (r *clientRepo) GetTrustedPeers(tx repo.Transaction, clientID string) ([]string, error) {
+	ex := r.executor(tx)
+	if clientID == "" {
+		return nil, client.ErrorInvalidClientID
+	}
+
+	qt := r.quote(trustedPeerTableName)
+	var ids []string
+	_, err := ex.Select(&ids, fmt.Sprintf("SELECT trusted_client_id from %s where client_id = $1", qt), clientID)
+
+	if err != nil {
+		if err != sql.ErrNoRows {
+			return nil, err
+		}
+		return nil, nil
+	}
+
+	return ids, nil
+}
+
+func (r *clientRepo) SetTrustedPeers(tx repo.Transaction, clientID string, clientIDs []string) error {
+	ex := r.executor(tx)
+	qt := r.quote(trustedPeerTableName)
+
+	// First delete all existing rows
+	_, err := ex.Exec(fmt.Sprintf("DELETE from %s where client_id = $1", qt), clientID)
+	if err != nil {
+		return err
+	}
+
+	// Ensure that the client exists.
+	_, err = r.get(tx, clientID)
+	if err != nil {
+		return err
+	}
+
+	// Verify that all the clients are valid
+	for _, curID := range clientIDs {
+		_, err := r.get(tx, curID)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Set the clients
+	rows := []interface{}{}
+	for _, curID := range clientIDs {
+		rows = append(rows, &trustedPeerModel{
+			ClientID:        clientID,
+			TrustedClientID: curID,
+		})
+	}
+	err = ex.Insert(rows...)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

db/migrate.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 
 	"github.com/go-gorp/gorp"
-	"github.com/rubenv/sql-migrate"
+	migrate "github.com/rubenv/sql-migrate"
 
 	"github.com/coreos/dex/db/migrations"
 )

db/migrate_sqlite3.go

@@ -70,4 +70,10 @@ CREATE TABLE session_key (
     expires_at bigint,
     stale integer
 );
+
+CREATE TABLE trusted_peers (
+    client_id text NOT NULL,
+    trusted_client_id text NOT NULL
+);
+
 `

db/migrations/0012_add_cross_client_authorizers.sql

@@ -0,0 +1,5 @@
+-- +migrate Up
+CREATE TABLE IF NOT EXISTS "trusted_peers" (
+       "client_id" text not null,
+       "trusted_client_id" text not null,
+       primary key ("client_id", "trusted_client_id")) ;

db/migrations/assets.go

@@ -72,5 +72,11 @@ var PostgresMigrations migrate.MigrationSource = &migrate.MemoryMigrationSource{
 				"-- +migrate Up\n\n-- This migration is a fix for a bug that allowed duplicate emails if they used different cases (see #338).\n-- When migrating, dex will not take the liberty of deleting rows for duplicate cases. Instead it will\n-- raise an exception and call for an admin to remove duplicates manually.\n\nCREATE OR REPLACE FUNCTION raise_exp() RETURNS VOID AS $$\nBEGIN\n     RAISE EXCEPTION 'Found duplicate emails when using case insensitive comparision, cannot perform migration.';\nEND;\n$$ LANGUAGE plpgsql;\n\nSELECT LOWER(email),\n    COUNT(email),\n    CASE\n        WHEN COUNT(email) > 1 THEN raise_exp()\n        ELSE NULL\n    END\nFROM authd_user\nGROUP BY LOWER(email);\n\nUPDATE authd_user SET email = LOWER(email);\n",
 			},
 		},
+		{
+			Id: "0012_add_cross_client_authorizers.sql",
+			Up: []string{
+				"-- +migrate Up\nCREATE TABLE IF NOT EXISTS \"trusted_peers\" (\n       \"client_id\" text not null,\n       \"trusted_client_id\" text not null,\n       primary key (\"client_id\", \"trusted_client_id\")) ;\n",
+			},
+		},
 	},
 }

db/user.go

@@ -248,7 +248,7 @@ func (r *userRepo) GetRemoteIdentities(tx repo.Transaction, userID string) ([]us
 		if err != sql.ErrNoRows {
 			return nil, err
 		}
-		return nil, err
+		return nil, nil
 	}
 	if len(rims) == 0 {
 		return nil, nil

functional/db_test.go

@@ -316,7 +316,7 @@ func TestDBClientRepoAuthenticate(t *testing.T) {
 	cli := client.Client{
 		Metadata: cm,
 	}
-	cc, err := m.New(cli)
+	cc, err := m.New(cli, nil)
 	if err != nil {
 		t.Fatalf(err.Error())
 	}

server/auth_middleware_test.go

@@ -37,7 +37,7 @@ func TestClientToken(t *testing.T) {
 	cli := client.Client{
 		Metadata: clientMetadata,
 	}
-	creds, err := clientManager.New(cli)
+	creds, err := clientManager.New(cli, nil)
 	if err != nil {
 		t.Fatalf("Failed to create client: %v", err)
 	}

server/client_registration.go

@@ -42,7 +42,7 @@ func (s *Server) handleClientRegistrationRequest(r *http.Request) (*oidc.ClientR
 	cli := client.Client{
 		Metadata: clientMetadata,
 	}
-	creds, err := s.ClientManager.New(cli)
+	creds, err := s.ClientManager.New(cli, nil)
 	if err != nil {
 		log.Errorf("Failed to create new client identity: %v", err)
 		return nil, newAPIError(oauth2.ErrorServerError, "unable to save client metadata")

server/client_resource.go

@@ -87,7 +87,7 @@ func (c *clientResource) create(w http.ResponseWriter, r *http.Request) {
 		writeAPIError(w, http.StatusBadRequest, newAPIError(errorInvalidClientMetadata, err.Error()))
 		return
 	}
-	creds, err := c.manager.New(ci)
+	creds, err := c.manager.New(ci, nil)
 
 	if err != nil {
 		log.Errorf("Failed creating client: %v", err)