Add options struct to initialize handler
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
This commit is contained in:
Derek McGowan
parent
c9880e6b05
commit
2ef7a872de
@ -113,27 +113,45 @@ type clock interface {
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type tokenHandler struct {
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header http.Header
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creds CredentialStore
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scope tokenScope
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transport http.RoundTripper
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clock clock
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forceOAuth bool
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clientID string
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scopes []Scope
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tokenLock sync.Mutex
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tokenCache string
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tokenExpiration time.Time
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additionalScopes map[string]struct{}
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}
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// tokenScope represents the scope at which a token will be requested.
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// This represents a specific action on a registry resource.
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type tokenScope struct {
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Resource string
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Scope string
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// Scope is a type which is serializable to a string
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// using the allow scope grammar.
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type Scope interface {
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String() string
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}
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// RepositoryScope represents a token scope for access
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// to a repository.
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type RepositoryScope struct {
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Repository string
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Actions []string
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}
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func (ts tokenScope) String() string {
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return fmt.Sprintf("%s:%s:%s", ts.Resource, ts.Scope, strings.Join(ts.Actions, ","))
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// String returns the string representation of the repository
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// using the scope grammar
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func (rs RepositoryScope) String() string {
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return fmt.Sprintf("repository:%s:%s", rs.Repository, strings.Join(rs.Actions, ","))
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}
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// TokenHandlerOptions is used to configure a new token handler
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type TokenHandlerOptions struct {
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Transport http.RoundTripper
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Credentials CredentialStore
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ForceOAuth bool
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ClientID string
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Scopes []Scope
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}
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// An implementation of clock for providing real time data.
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@ -145,22 +163,32 @@ func (realClock) Now() time.Time { return time.Now() }
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// NewTokenHandler creates a new AuthenicationHandler which supports
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// fetching tokens from a remote token server.
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func NewTokenHandler(transport http.RoundTripper, creds CredentialStore, scope string, actions ...string) AuthenticationHandler {
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return newTokenHandler(transport, creds, realClock{}, scope, actions...)
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}
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// newTokenHandler exposes the option to provide a clock to manipulate time in unit testing.
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func newTokenHandler(transport http.RoundTripper, creds CredentialStore, c clock, scope string, actions ...string) AuthenticationHandler {
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return &tokenHandler{
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transport: transport,
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creds: creds,
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clock: c,
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scope: tokenScope{
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Resource: "repository",
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Scope: scope,
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// Create options...
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return NewTokenHandlerWithOptions(TokenHandlerOptions{
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Transport: transport,
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Credentials: creds,
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Scopes: []Scope{
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RepositoryScope{
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Repository: scope,
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Actions: actions,
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},
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additionalScopes: map[string]struct{}{},
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},
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})
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}
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// NewTokenHandlerWithOptions creates a new token handler using the provided
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// options structure.
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func NewTokenHandlerWithOptions(options TokenHandlerOptions) AuthenticationHandler {
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handler := &tokenHandler{
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transport: options.Transport,
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creds: options.Credentials,
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forceOAuth: options.ForceOAuth,
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clientID: options.ClientID,
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scopes: options.Scopes,
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clock: realClock{},
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}
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return handler
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}
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func (th *tokenHandler) client() *http.Client {
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@ -177,9 +205,8 @@ func (th *tokenHandler) Scheme() string {
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func (th *tokenHandler) AuthorizeRequest(req *http.Request, params map[string]string) error {
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var additionalScopes []string
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if fromParam := req.URL.Query().Get("from"); fromParam != "" {
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additionalScopes = append(additionalScopes, tokenScope{
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Resource: "repository",
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Scope: fromParam,
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additionalScopes = append(additionalScopes, RepositoryScope{
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Repository: fromParam,
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Actions: []string{"pull"},
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}.String())
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}
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@ -195,16 +222,19 @@ func (th *tokenHandler) AuthorizeRequest(req *http.Request, params map[string]st
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func (th *tokenHandler) refreshToken(params map[string]string, additionalScopes ...string) error {
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th.tokenLock.Lock()
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defer th.tokenLock.Unlock()
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scopes := make([]string, 0, len(th.scopes)+len(additionalScopes))
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for _, scope := range th.scopes {
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scopes = append(scopes, scope.String())
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}
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var addedScopes bool
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for _, scope := range additionalScopes {
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if _, ok := th.additionalScopes[scope]; !ok {
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th.additionalScopes[scope] = struct{}{}
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scopes = append(scopes, scope)
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addedScopes = true
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}
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}
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now := th.clock.Now()
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if now.After(th.tokenExpiration) || addedScopes {
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token, expiration, err := th.fetchToken(params)
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token, expiration, err := th.fetchToken(params, scopes)
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if err != nil {
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return err
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}
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@ -232,8 +262,12 @@ func (th *tokenHandler) fetchTokenWithOAuth(realm *url.URL, refreshToken, servic
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form.Set("scope", strings.Join(scopes, " "))
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form.Set("service", service)
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// TODO: Make this configurable
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form.Set("client_id", "docker")
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clientID := th.clientID
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if clientID == "" {
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// Use default client, this is a required field
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clientID = "registry-client"
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}
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form.Set("client_id", clientID)
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if refreshToken != "" {
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form.Set("grant_type", "refresh_token")
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@ -369,7 +403,7 @@ func (th *tokenHandler) fetchTokenWithBasicAuth(realm *url.URL, service string,
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return tr.Token, tr.IssuedAt.Add(time.Duration(tr.ExpiresIn) * time.Second), nil
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}
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func (th *tokenHandler) fetchToken(params map[string]string) (token string, expiration time.Time, err error) {
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func (th *tokenHandler) fetchToken(params map[string]string, scopes []string) (token string, expiration time.Time, err error) {
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realm, ok := params["realm"]
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if !ok {
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return "", time.Time{}, errors.New("no realm specified for token auth challenge")
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@ -383,22 +417,13 @@ func (th *tokenHandler) fetchToken(params map[string]string) (token string, expi
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service := params["service"]
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scopes := make([]string, 0, 1+len(th.additionalScopes))
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if len(th.scope.Actions) > 0 {
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scopes = append(scopes, th.scope.String())
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}
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for scope := range th.additionalScopes {
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scopes = append(scopes, scope)
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}
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var refreshToken string
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if th.creds != nil {
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refreshToken = th.creds.RefreshToken(realmURL, service)
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}
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// TODO(dmcgowan): define parameter to force oauth with password
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if refreshToken != "" {
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if refreshToken != "" || th.forceOAuth {
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return th.fetchTokenWithOAuth(realmURL, refreshToken, service, scopes)
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}
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@ -220,7 +220,7 @@ func TestEndpointAuthorizeRefreshToken(t *testing.T) {
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Request: testutil.Request{
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Method: "POST",
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Route: "/token",
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Body: []byte(fmt.Sprintf("client_id=docker&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken1, url.QueryEscape(scope1), service)),
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Body: []byte(fmt.Sprintf("client_id=registry-client&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken1, url.QueryEscape(scope1), service)),
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},
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Response: testutil.Response{
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StatusCode: http.StatusOK,
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@ -232,7 +232,7 @@ func TestEndpointAuthorizeRefreshToken(t *testing.T) {
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Request: testutil.Request{
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Method: "POST",
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Route: "/token",
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Body: []byte(fmt.Sprintf("client_id=docker&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken1, url.QueryEscape(scope2), service)),
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Body: []byte(fmt.Sprintf("client_id=registry-client&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken1, url.QueryEscape(scope2), service)),
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},
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Response: testutil.Response{
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StatusCode: http.StatusOK,
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@ -243,7 +243,7 @@ func TestEndpointAuthorizeRefreshToken(t *testing.T) {
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Request: testutil.Request{
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Method: "POST",
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Route: "/token",
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Body: []byte(fmt.Sprintf("client_id=docker&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken2, url.QueryEscape(scope2), service)),
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Body: []byte(fmt.Sprintf("client_id=registry-client&grant_type=refresh_token&refresh_token=%s&scope=%s&service=%s", refreshToken2, url.QueryEscape(scope2), service)),
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},
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Response: testutil.Response{
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StatusCode: http.StatusOK,
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@ -542,7 +542,19 @@ func TestEndpointAuthorizeTokenBasicWithExpiresIn(t *testing.T) {
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t.Fatal(err)
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}
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clock := &fakeClock{current: time.Now()}
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transport1 := transport.NewTransport(nil, NewAuthorizer(challengeManager, newTokenHandler(nil, creds, clock, repo, "pull", "push"), NewBasicHandler(creds)))
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options := TokenHandlerOptions{
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Transport: nil,
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Credentials: creds,
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Scopes: []Scope{
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RepositoryScope{
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Repository: repo,
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Actions: []string{"pull", "push"},
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},
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},
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}
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tHandler := NewTokenHandlerWithOptions(options)
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tHandler.(*tokenHandler).clock = clock
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transport1 := transport.NewTransport(nil, NewAuthorizer(challengeManager, tHandler, NewBasicHandler(creds)))
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client := &http.Client{Transport: transport1}
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// First call should result in a token exchange
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@ -680,7 +692,20 @@ func TestEndpointAuthorizeTokenBasicWithExpiresInAndIssuedAt(t *testing.T) {
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if err != nil {
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t.Fatal(err)
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}
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transport1 := transport.NewTransport(nil, NewAuthorizer(challengeManager, newTokenHandler(nil, creds, clock, repo, "pull", "push"), NewBasicHandler(creds)))
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options := TokenHandlerOptions{
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Transport: nil,
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Credentials: creds,
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Scopes: []Scope{
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RepositoryScope{
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Repository: repo,
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Actions: []string{"pull", "push"},
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},
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},
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}
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tHandler := NewTokenHandlerWithOptions(options)
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tHandler.(*tokenHandler).clock = clock
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transport1 := transport.NewTransport(nil, NewAuthorizer(challengeManager, tHandler, NewBasicHandler(creds)))
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client := &http.Client{Transport: transport1}
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// First call should result in a token exchange
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