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124 lines
3.9 KiB
Go
124 lines
3.9 KiB
Go
package authz
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import (
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"context"
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"strings"
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"sync"
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caos_errs "github.com/caos/zitadel/internal/errors"
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"github.com/caos/zitadel/internal/telemetry/tracing"
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)
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const (
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BearerPrefix = "Bearer "
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)
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type TokenVerifier struct {
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authZRepo authZRepo
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clients sync.Map
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authMethods MethodMapping
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}
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type authZRepo interface {
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VerifyAccessToken(ctx context.Context, token, verifierClientID string) (userID, agentID, clientID, prefLang, resourceOwner string, err error)
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VerifierClientID(ctx context.Context, name string) (clientID string, err error)
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SearchMyMemberships(ctx context.Context) ([]*Membership, error)
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ProjectIDAndOriginsByClientID(ctx context.Context, clientID string) (projectID string, origins []string, err error)
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ExistsOrg(ctx context.Context, orgID string) error
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CheckOrgFeatures(ctx context.Context, orgID string, requiredFeatures ...string) error
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}
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func Start(authZRepo authZRepo) (v *TokenVerifier) {
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return &TokenVerifier{authZRepo: authZRepo}
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}
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func (v *TokenVerifier) VerifyAccessToken(ctx context.Context, token string, method string) (userID, clientID, agentID, prefLang, resourceOwner string, err error) {
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verifierClientID, err := v.clientIDFromMethod(ctx, method)
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if err != nil {
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return "", "", "", "", "", err
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}
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userID, agentID, clientID, prefLang, resourceOwner, err = v.authZRepo.VerifyAccessToken(ctx, token, verifierClientID)
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return userID, clientID, agentID, prefLang, resourceOwner, err
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}
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type client struct {
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id string
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name string
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}
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func (v *TokenVerifier) RegisterServer(appName, methodPrefix string, mappings MethodMapping) {
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v.clients.Store(methodPrefix, &client{name: appName})
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if v.authMethods == nil {
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v.authMethods = make(map[string]Option)
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}
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for method, option := range mappings {
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v.authMethods[method] = option
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}
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}
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func prefixFromMethod(method string) (string, bool) {
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parts := strings.Split(method, "/")
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if len(parts) < 2 {
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return "", false
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}
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return parts[1], true
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}
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func (v *TokenVerifier) clientIDFromMethod(ctx context.Context, method string) (_ string, err error) {
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ctx, span := tracing.NewSpan(ctx)
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defer func() { span.EndWithError(err) }()
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prefix, ok := prefixFromMethod(method)
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if !ok {
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return "", caos_errs.ThrowPermissionDenied(nil, "AUTHZ-GRD2Q", "Errors.Internal")
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}
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app, ok := v.clients.Load(prefix)
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if !ok {
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return "", caos_errs.ThrowPermissionDenied(nil, "AUTHZ-G2qrh", "Errors.Internal")
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}
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c := app.(*client)
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if c.id != "" {
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return c.id, nil
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}
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c.id, err = v.authZRepo.VerifierClientID(ctx, c.name)
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if err != nil {
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return "", caos_errs.ThrowPermissionDenied(err, "AUTHZ-ptTIF2", "Errors.Internal")
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}
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v.clients.Store(prefix, c)
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return c.id, nil
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}
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func (v *TokenVerifier) SearchMyMemberships(ctx context.Context) (_ []*Membership, err error) {
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ctx, span := tracing.NewSpan(ctx)
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defer func() { span.EndWithError(err) }()
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return v.authZRepo.SearchMyMemberships(ctx)
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}
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func (v *TokenVerifier) ProjectIDAndOriginsByClientID(ctx context.Context, clientID string) (_ string, _ []string, err error) {
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ctx, span := tracing.NewSpan(ctx)
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defer func() { span.EndWithError(err) }()
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return v.authZRepo.ProjectIDAndOriginsByClientID(ctx, clientID)
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}
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func (v *TokenVerifier) ExistsOrg(ctx context.Context, orgID string) (err error) {
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ctx, span := tracing.NewSpan(ctx)
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defer func() { span.EndWithError(err) }()
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return v.authZRepo.ExistsOrg(ctx, orgID)
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}
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func (v *TokenVerifier) CheckAuthMethod(method string) (Option, bool) {
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authOpt, ok := v.authMethods[method]
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return authOpt, ok
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}
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func verifyAccessToken(ctx context.Context, token string, t *TokenVerifier, method string) (userID, clientID, agentID, prefLan, resourceOwner string, err error) {
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ctx, span := tracing.NewSpan(ctx)
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defer func() { span.EndWithError(err) }()
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parts := strings.Split(token, BearerPrefix)
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if len(parts) != 2 {
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return "", "", "", "", "", caos_errs.ThrowUnauthenticated(nil, "AUTH-7fs1e", "invalid auth header")
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}
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return t.VerifyAccessToken(ctx, parts[1], method)
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}
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