Add check to avoid crashes when a claim element's value is nil

Prepare changelog for 0.4.0 release
Fix linter warnings
2024-08-16 18:05:08 +02:00 · 2024-05-20 11:47:00 +02:00 · 2024-05-19 16:05:26 +02:00 · 2024-05-19 08:12:39 +02:00 · 2024-05-12 12:16:54 +02:00 · 2024-05-12 12:16:18 +02:00
36 changed files with 2109 additions and 1076 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,10 +1,11 @@
 *.pem
-.idea/
+/.idea/
 /cacert-idp
+/certs/
 /dist/
 /idp.toml
 /static
+/translations/translate.*.toml
 /ui/css/
 /ui/images/
 /ui/js/
-certs/
--- a/.golangci.yml
+++ b/.golangci.yml
@ -8,7 +8,7 @@ linters-settings:
      const:
        ORGANIZATION: CAcert Inc.
    template: |-
-      Copyright {{ YEAR-RANGE }} {{ ORGANIZATION }}
+      Copyright {{ ORGANIZATION }}
      SPDX-License-Identifier: Apache-2.0

      Licensed under the Apache License, Version 2.0 (the "License");
@ -47,7 +47,7 @@ linters:
    - gofmt
    - goheader
    - goimports
-    - gomnd
+    - mnd
    - gosec
    - lll
    - makezero
--- a/11
+++ b/11
@ -18,13 +18,12 @@ go.sum: go.mod
 	go mod tidy

 translations: $(TRANSLATIONS) $(GOFILES)
-	cd translations ; \
-	goi18n extract .. ; \
-	goi18n merge active.*.toml ; \
-	if translate.*.toml 2>/dev/null; then \
+	if [ ! -z "$(wildcard translations/translate.*.toml)" ]; then \
 		echo "missing translations"; \
-		goi18n merge active.*.toml translate.*.toml; \
-	fi
+		goi18n merge -outdir translations translations/active.*.toml translations/translate.*.toml; \
+	fi ; \
+	goi18n extract -outdir translations . ; \
+	goi18n merge -outdir translations translations/active.*.toml

 lint: $(GOFILES)
 	golangci-lint run --verbose
--- a/README.md
+++ b/README.md
@ -66,26 +66,26 @@ internationalization (i18n) support.

 The translation workflow needs the `go18n` binary which can be installed via

-```
+```shell
 go install github.com/nicksnyder/go-i18n/v2/goi18n
 ```

 To extract new messages from the code run

-```
-goi18n extract .
+```shell
+goi18n extract -outdir translations .
 ```

 Then use

-```
-goi18n merge active.*.toml
+```shell
+goi18n merge -outdir translations translations/active.*.toml
 ```

 to create TOML files for translation as `translate.<locale>.toml`. After
 translating the messages run

-```
+```shell
 goi18n merge active.*.toml translate.*.toml
 ```

--- a/changelog.md
+++ b/changelog.md
@ -5,6 +5,31 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

+## Unreleased
+### [0.4.0] - 2024-05-20
+- HTML for client logo image is only rendered if a client application has a logo URL
+- link to client information is only rendered if a client application has a client URL
+- use Consent and Deny buttons instead of a checkbox when asking for consent
+- update dependencies
+- switch from logrus to slog
+### Fixed
+- fix subject handling for login requests
+
+## [0.3.0] - 2023-08-07
+### Changed
+- use a session to transport data from the login to the consent screens
+- implement skip of consent screen for existing consent
+- adapt to Hydra 2.x
+- introduce a central template cache
+- move common page header to templates/base.gohtml
+### Added
+- add management of consent to allow users to check and revoke consent
+
+## [0.2.1] - 2023-08-03
+### Changed
+- improve formatting and german translation of login page
+- enforce selection of an email address for multi-address client certificates
+
 ## [0.2.0] - 2023-07-29
 ### Added
 - implement logout-successful handler
--- a/cmd/idp/main.go
+++ b/cmd/idp/main.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -24,6 +24,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"os"
@ -31,11 +32,11 @@ import (
 	"sync/atomic"
 	"time"

-	"github.com/go-openapi/runtime/client"
 	"github.com/gorilla/csrf"
 	"github.com/knadh/koanf"
-	hydra "github.com/ory/hydra-client-go/client"
-	log "github.com/sirupsen/logrus"
+	"github.com/knadh/koanf/parsers/toml"
+	"github.com/knadh/koanf/providers/confmap"
+	hydra "github.com/ory/hydra-client-go/v2"

 	"code.cacert.org/cacert/oidc-idp/internal/handlers"
 	"code.cacert.org/cacert/oidc-idp/internal/services"
@ -51,6 +52,11 @@ const (
 	DefaultCSRFMaxAge = 600

 	httpsDefaultPort = 443
+
+	sessionKeyLength     = 32
+	sessionAuthKeyLength = 64
+
+	minCSRFKeyLength = 32
 )

 var (
@ -60,52 +66,83 @@ var (
 )

 func main() {
-	logger := log.New()
+	var (
+		logLevel   = new(slog.LevelVar)
+		logHandler slog.Handler
+		logger     *slog.Logger
+	)
+
+	logHandler = slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: logLevel})
+	logger = slog.New(logHandler)
+	slog.SetDefault(logger)

 	config, err := services.ConfigureApplication(logger, "IDP", services.DefaultConfig)
 	if err != nil {
-		logger.WithError(err).Fatal("error loading configuration")
+		logger.Error("error loading configuration", "err", err)
+		os.Exit(1)
 	}

-	if level := config.String("log.level"); level != "" {
-		logLevel, err := log.ParseLevel(level)
+	if level := config.Bytes("log.level"); level != nil {
+		err := logLevel.UnmarshalText(level)
 		if err != nil {
-			logger.WithError(err).Fatal("could not parse log level")
+			logger.Error("could not parse log level", "error", err)
+			os.Exit(1)
 		}

-		logger.SetLevel(logLevel)
+		slog.SetLogLoggerLevel(logLevel.Level())
 	}

 	if config.Bool("log.json") {
-		logger.SetFormatter(&log.JSONFormatter{})
+		logHandler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: logLevel})
+		logger = slog.New(logHandler)
+		slog.SetDefault(logger)
 	}

-	logger.WithFields(log.Fields{
-		"version": version, "commit": commit, "date": date,
-	}).Info("Starting CAcert OpenID Connect Identity Provider")
-	logger.Infoln("Server is starting")
-	bundle, catalog := services.InitI18n(logger, config.Strings("i18n.languages"))
+	logger.Info("Starting CAcert OpenID Connect Identity Provider",
+		"version", version, "commit", commit, "date", date,
+	)
+	logger.Info("Server is starting")
+	i18nService := services.InitI18n(logger, config.Strings("i18n.languages"))

-	if err = services.AddMessages(catalog); err != nil {
-		logger.WithError(err).Fatal("could not add messages for i18n")
+	if err = i18nService.AddMessages(); err != nil {
+		logger.Error("could not add messages for i18n", "error", err)
+		os.Exit(1)
 	}

+	sessionAuthKey, sessionEncKey, csrfKey, err := configureSessionParameters(config)
+	if err != nil {
+		logger.Error("could not configure session parameters", "error", err)
+		os.Exit(1)
+	}
+
+	services.InitSessionStore(sessionAuthKey, sessionEncKey)
+
 	clientTransport, err := configureAdminClient(config)
 	if err != nil {
-		logger.WithError(err).Fatal("could not configure Hydra admin client")
+		logger.Error("could not configure Hydra admin client", "error", err)
+		os.Exit(1)
 	}

-	adminClient := hydra.New(clientTransport, nil)
+	tc := handlers.PopulateTemplateCache()

-	loginHandler := handlers.NewLoginHandler(logger, bundle, catalog, adminClient.Admin)
-	consentHandler := handlers.NewConsentHandler(logger, bundle, catalog, adminClient.Admin)
-	logoutHandler := handlers.NewLogoutHandler(logger, adminClient.Admin)
+	needsAuth := handlers.NewAuthMiddleware(logger, tc, i18nService).NeedsAuth

-	logoutSuccessHandler := handlers.NewLogoutSuccessHandler(logger, bundle, catalog)
-	errorHandler := handlers.NewErrorHandler(logger, bundle, catalog)
+	indexHandler := handlers.NewIndex(logger, tc, i18nService)
+	manageConsentHandler := handlers.NewManageConsent(logger, tc, i18nService, clientTransport.OAuth2API)
+	revokeConsentHandler := handlers.NewRevokeConsent(logger, tc, i18nService, clientTransport.OAuth2API)
+
+	loginHandler := handlers.NewLoginHandler(logger, tc, i18nService, clientTransport.OAuth2API)
+	consentHandler := handlers.NewConsentHandler(logger, tc, i18nService, clientTransport.OAuth2API)
+	logoutHandler := handlers.NewLogout(logger, clientTransport.OAuth2API)
+
+	logoutSuccessHandler := handlers.NewLogoutSuccess(logger, tc, i18nService)
+	errorHandler := handlers.NewErrorHandler(logger, i18nService)
 	staticFiles := http.FileServer(http.FS(ui.Static))

 	router := http.NewServeMux()
+	router.HandleFunc("/", needsAuth(indexHandler))
+	router.Handle("/manage-consent", needsAuth(manageConsentHandler))
+	router.Handle("/revoke-consent/", needsAuth(revokeConsentHandler))
 	router.Handle("/login", loginHandler)
 	router.Handle("/consent", consentHandler)
 	router.Handle("/logout", logoutHandler)
@ -116,11 +153,6 @@ func main() {
 	router.Handle("/css/", staticFiles)
 	router.Handle("/js/", staticFiles)

-	csrfKey, err := base64.StdEncoding.DecodeString(config.MustString("security.csrf.key"))
-	if err != nil {
-		logger.WithError(err).Fatal("could not parse CSRF key bytes")
-	}
-
 	nextRequestID := func() string {
 		return fmt.Sprintf("%d", time.Now().UnixNano())
 	}
@ -134,23 +166,35 @@ func main() {
 		csrf.SameSite(csrf.SameSiteStrictMode),
 		csrf.MaxAge(DefaultCSRFMaxAge))

-	errorMiddleware, err := handlers.ErrorHandling(logger, ui.Templates, bundle, catalog)
+	errorMiddleware, err := handlers.ErrorHandling(logger, tc, i18nService)
 	if err != nil {
-		logger.WithError(err).Fatal("could not initialize request error handling")
+		logger.Error("could not initialize request error handling", "error", err)
+		os.Exit(1)
 	}

 	handlerChain := tracing(logging(hsts(errorMiddleware(csrfProtect(router)))))

-	startServer(logger, config, handlerChain)
+	err = startServer(logger, config, handlerChain)
+	if err != nil {
+		logger.Error("server start failed", "error", err)
+		os.Exit(1)
+	}
 }

-func configureAdminClient(config *koanf.Koanf) (*client.Runtime, error) {
+func configureAdminClient(config *koanf.Koanf) (*hydra.APIClient, error) {
 	adminURL, err := url.Parse(config.MustString("admin.url"))
 	if err != nil {
 		return nil, fmt.Errorf("error parsing admin URL: %w", err)
 	}

-	tlsClientConfig := &tls.Config{MinVersion: tls.VersionTLS12}
+	configuration := hydra.NewConfiguration()
+	configuration.Servers = []hydra.ServerConfiguration{
+		{
+			URL: adminURL.String(),
+		},
+	}
+
+	tlsClientConfig := &tls.Config{MinVersion: tls.VersionTLS12, ServerName: adminURL.Hostname()}

 	if config.Exists("api-client.rootCAs") {
 		rootCAFile := config.MustString("api-client.rootCAs")
@ -166,18 +210,15 @@ func configureAdminClient(config *koanf.Koanf) (*client.Runtime, error) {
 	}

 	tlsClientTransport := &http.Transport{TLSClientConfig: tlsClientConfig}
-	httpClient := &http.Client{Transport: tlsClientTransport}
-	clientTransport := client.NewWithClient(
-		adminURL.Host,
-		adminURL.Path,
-		[]string{adminURL.Scheme},
-		httpClient,
-	)

-	return clientTransport, nil
+	c := hydra.NewAPIClient(configuration)
+
+	configuration.HTTPClient.Transport = tlsClientTransport
+
+	return c, nil
 }

-func startServer(logger *log.Logger, config *koanf.Koanf, handlerChain http.Handler) {
+func startServer(logger *slog.Logger, config *koanf.Koanf, handlerChain http.Handler) error {
 	clientCertificateCAFile := config.MustString("security.client.ca-file")
 	serverBindAddress := config.String("server.bind_address")
 	serverName := config.String("server.name")
@ -187,7 +228,7 @@ func startServer(logger *log.Logger, config *koanf.Koanf, handlerChain http.Hand

 	pemBytes, err := os.ReadFile(clientCertificateCAFile)
 	if err != nil {
-		logger.WithError(err).Fatal("could not load client CA certificates")
+		return fmt.Errorf("could not load client CA certificates: %w", err)
 	}

 	clientCertPool.AppendCertsFromPEM(pemBytes)
@ -213,7 +254,7 @@ func startServer(logger *log.Logger, config *koanf.Koanf, handlerChain http.Hand

 	go func() {
 		<-quit
-		logger.Infoln("Server is shutting down...")
+		logger.Info("Server is shutting down...")
 		atomic.StoreInt32(&handlers.Healthy, 0)

 		ctx, cancel := context.WithTimeout(context.Background(), ShutdownTimeout)
@ -222,27 +263,30 @@ func startServer(logger *log.Logger, config *koanf.Koanf, handlerChain http.Hand
 		server.SetKeepAlivesEnabled(false)

 		if err := server.Shutdown(ctx); err != nil {
-			logger.WithError(err).Fatal("Could not gracefully shutdown the server")
+			logger.Error("could not shutdown server gracefully", "error", err)
 		}

 		close(done)
 	}()

-	logger.WithFields(log.Fields{
-		"address": server.Addr, "url": publicAddress(serverName, serverPort),
-	}).Info("Server is ready to handle requests")
+	logger.Info(
+		"Server is ready to handle requests",
+		"address", server.Addr, "url", publicAddress(serverName, serverPort),
+	)
 	atomic.StoreInt32(&handlers.Healthy, 1)

 	if err := server.ListenAndServeTLS(
 		config.String("server.certificate"), config.String("server.key"),
 	); err != nil && !errors.Is(err, http.ErrServerClosed) {
-		logger.WithError(err).WithField(
-			"server_addr", server.Addr,
-		).Fatal("Could not listen on configured server address")
+		logger.Error("could not listen on configured server address", "server_addr", server.Addr)
+
+		return fmt.Errorf("could not create listener: %w", err)
 	}

 	<-done
-	logger.Infoln("Server stopped")
+	logger.Info("Server stopped")
+
+	return nil
 }

 func publicAddress(serverName string, serverPort int) string {
@ -252,3 +296,67 @@ func publicAddress(serverName string, serverPort int) string {

 	return fmt.Sprintf("https://%s/", serverName)
 }
+
+func configureSessionParameters(config *koanf.Koanf) ([]byte, []byte, []byte, error) { //nolint:cyclop
+	sessionAuthKey, err := base64.StdEncoding.DecodeString(config.String("session.auth-key"))
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("could not decode session auth key: %w", err)
+	}
+
+	sessionEncKey, err := base64.StdEncoding.DecodeString(config.String("session.enc-key"))
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("could not decode session encryption key: %w", err)
+	}
+
+	csrfKey, err := base64.StdEncoding.DecodeString(config.String("security.csrf.key"))
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("could not decode CSRF key bytes: %w", err)
+	}
+
+	generated := false
+
+	if len(sessionAuthKey) != sessionAuthKeyLength {
+		sessionAuthKey, err = services.GenerateKey(sessionAuthKeyLength)
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("could not generate session authentication key: %w", err)
+		}
+
+		generated = true
+	}
+
+	if len(sessionEncKey) != sessionKeyLength {
+		sessionEncKey, err = services.GenerateKey(sessionKeyLength)
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("could not generate session encryption key: %w", err)
+		}
+
+		generated = true
+	}
+
+	if len(csrfKey) < minCSRFKeyLength {
+		csrfKey, err = services.GenerateKey(minCSRFKeyLength)
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("could not generate CSRF key: %w", err)
+		}
+
+		generated = true
+	}
+
+	if generated {
+		_ = config.Load(confmap.Provider(map[string]interface{}{
+			"session.auth-key":  base64.StdEncoding.EncodeToString(sessionAuthKey),
+			"session.enc-key":   base64.StdEncoding.EncodeToString(sessionEncKey),
+			"security.csrf.key": base64.StdEncoding.EncodeToString(csrfKey),
+		}, "."), nil)
+
+		tomlData, err := config.Marshal(toml.Parser())
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("could not encode session config: %w", err)
+		}
+
+		slog.Info("generated configuration values, put the following into your idp.toml")
+		fmt.Printf("------\n%s------\n", string(tomlData)) //nolint:forbidigo
+	}
+
+	return sessionAuthKey, sessionEncKey, csrfKey, nil
+}
--- a/go.mod
+++ b/go.mod
@ -1,60 +1,38 @@
 module code.cacert.org/cacert/oidc-idp

-go 1.19
+go 1.22

 require (
 	github.com/BurntSushi/toml v1.3.2
-	github.com/go-openapi/runtime v0.26.0
+	github.com/dustin/go-humanize v1.0.1
 	github.com/go-playground/form/v4 v4.2.1
-	github.com/gorilla/csrf v1.7.1
+	github.com/gorilla/csrf v1.7.2
+	github.com/gorilla/sessions v1.2.2
 	github.com/knadh/koanf v1.5.0
-	github.com/lestrrat-go/jwx v1.2.26
-	github.com/nicksnyder/go-i18n/v2 v2.2.1
-	github.com/ory/hydra-client-go v1.10.6
-	github.com/sirupsen/logrus v1.9.3
+	github.com/lestrrat-go/jwx v1.2.29
+	github.com/nicksnyder/go-i18n/v2 v2.4.0
+	github.com/ory/hydra-client-go/v2 v2.2.0
 	github.com/spf13/pflag v1.0.5
-	github.com/yuin/goldmark v1.5.5
-	golang.org/x/text v0.11.0
+	github.com/yuin/goldmark v1.7.1
+	golang.org/x/text v0.15.0
 )

 require (
-	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
-	github.com/fsnotify/fsnotify v1.6.0 // indirect
-	github.com/go-logr/logr v1.2.4 // indirect
-	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-openapi/analysis v0.21.4 // indirect
-	github.com/go-openapi/errors v0.20.4 // indirect
-	github.com/go-openapi/jsonpointer v0.20.0 // indirect
-	github.com/go-openapi/jsonreference v0.20.2 // indirect
-	github.com/go-openapi/loads v0.21.2 // indirect
-	github.com/go-openapi/spec v0.20.9 // indirect
-	github.com/go-openapi/strfmt v0.21.7 // indirect
-	github.com/go-openapi/swag v0.22.4 // indirect
-	github.com/go-openapi/validate v0.22.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
-	github.com/gorilla/securecookie v1.1.1 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
+	github.com/gorilla/securecookie v1.1.2 // indirect
 	github.com/lestrrat-go/backoff/v2 v2.0.8 // indirect
-	github.com/lestrrat-go/blackmagic v1.0.1 // indirect
+	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
 	github.com/lestrrat-go/httpcc v1.0.1 // indirect
 	github.com/lestrrat-go/iter v1.0.2 // indirect
 	github.com/lestrrat-go/option v1.0.1 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
-	github.com/oklog/ulid v1.3.1 // indirect
-	github.com/opentracing/opentracing-go v1.2.0 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/rogpeppe/go-internal v1.9.0 // indirect
-	go.mongodb.org/mongo-driver v1.12.0 // indirect
-	go.opentelemetry.io/otel v1.16.0 // indirect
-	go.opentelemetry.io/otel/metric v1.16.0 // indirect
-	go.opentelemetry.io/otel/trace v1.16.0 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/sys v0.10.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/oauth2 v0.20.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,11 +1,8 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/toml v1.0.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
-github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
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@ -16,9 +13,6 @@ github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hC
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
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@ -40,14 +34,16 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
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@ -57,8 +53,8 @@ github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
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@ -67,80 +63,12 @@ github.com/go-ldap/ldap v3.0.2+incompatible/go.mod h1:qfd9rJvER9Q0/D/Sqn1DfHRoBp
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@ -169,20 +97,22 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@ -383,54 +277,31 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@ -459,19 +330,19 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
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@ -488,9 +359,7 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
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@ -509,23 +378,23 @@ golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7w
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-golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
-golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@ -533,22 +402,17 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
-golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
-golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190329151228-23e29df326fe/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190416151739-9c9e1878f421/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190420181800-aa740d480789/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/tools v0.0.0-20190531172133-b3315ee88b7d/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
@ -591,12 +455,7 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/asn1-ber.v1 v1.0.0-20181015200546-f715ec2f112d/go.mod h1:cuepJuh7vyXfUyUwEgHQXw849cJrilpS5NeIjOWESAw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
-gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/square/go-jose.v2 v2.3.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@ -608,8 +467,6 @@ gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/internal/handlers/common.go
+++ b/internal/handlers/common.go
@ -0,0 +1,187 @@
+/*
+Copyright CAcert Inc.
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package handlers
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"html/template"
+	"log/slog"
+	"net/http"
+
+	"github.com/dustin/go-humanize"
+	"github.com/gorilla/sessions"
+	"github.com/nicksnyder/go-i18n/v2/i18n"
+
+	"code.cacert.org/cacert/oidc-idp/ui"
+
+	"code.cacert.org/cacert/oidc-idp/internal/services"
+)
+
+const sessionName = "idp_session"
+
+func GetSession(r *http.Request) (*sessions.Session, error) {
+	session, err := services.GetSessionStore().Get(r, sessionName)
+	if err != nil {
+		return nil, fmt.Errorf("could not get session")
+	}
+
+	return session, nil
+}
+
+type AuthMiddleware struct {
+	logger    *slog.Logger
+	trans     *services.I18NService
+	templates TemplateCache
+}
+
+func getLocalizer(trans *services.I18NService, r *http.Request) *i18n.Localizer {
+	accept := r.Header.Get("Accept-Language")
+
+	return trans.Localizer(accept)
+}
+
+type authContextKey int
+
+const ctxKeyAddresses authContextKey = iota
+
+func (a *AuthMiddleware) NeedsAuth(handler http.Handler) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		_, addresses := getDataFromClientCert(a.logger, r)
+
+		if len(addresses) < 1 {
+			renderNoEmailsInClientCertificate(a.logger, a.templates, a.trans, w, getLocalizer(a.trans, r))
+
+			return
+		}
+
+		handler.ServeHTTP(w, r.WithContext(context.WithValue(r.Context(), ctxKeyAddresses, addresses)))
+	}
+}
+
+func GetAuthenticatedAddresses(r *http.Request) []string {
+	if addresses, ok := r.Context().Value(ctxKeyAddresses).([]string); ok {
+		return addresses
+	}
+
+	return nil
+}
+
+func NewAuthMiddleware(logger *slog.Logger, tc TemplateCache, trans *services.I18NService) *AuthMiddleware {
+	return &AuthMiddleware{logger: logger, trans: trans, templates: tc}
+}
+
+type templateName string
+
+const (
+	CertificateLogin            templateName = "cert"
+	ConfirmRevoke               templateName = "confirm_revoke"
+	Consent                     templateName = "consent"
+	Error                       templateName = "error"
+	Index                       templateName = "index"
+	LogoutSuccessful            templateName = "logout_successful"
+	ManageConsent               templateName = "manage_consent"
+	NoChallengeInRequest        templateName = "no_challenge"
+	NoEmailsInClientCertificate templateName = "no_emails"
+)
+
+type TemplateCache map[templateName]*template.Template
+
+func (c TemplateCache) render(
+	logger *slog.Logger, w http.ResponseWriter, name templateName, params map[string]interface{},
+) {
+	rendered := bytes.NewBuffer(make([]byte, 0))
+
+	err := c[name].Lookup("base").Execute(rendered, params)
+	if err != nil {
+		logger.Error("template rendering failed", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	_, _ = w.Write(rendered.Bytes())
+}
+
+func PopulateTemplateCache() TemplateCache {
+	funcMap := map[string]any{"humantime": humanize.Time}
+
+	cache := TemplateCache{
+		CertificateLogin: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/client_certificate.gohtml",
+		)),
+		ConfirmRevoke: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/confirm_revoke.gohtml",
+		)),
+		NoEmailsInClientCertificate: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/no_email_in_client_certificate.gohtml",
+		)),
+		NoChallengeInRequest: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/no_challenge_in_request.gohtml",
+		)),
+		Consent: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/consent.gohtml",
+		)),
+		LogoutSuccessful: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/logout_successful.gohtml",
+		)),
+		Index: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/index.gohtml",
+		)),
+		ManageConsent: template.Must(template.New("").Funcs(funcMap).ParseFS(
+			ui.Templates,
+			"templates/base.gohtml", "templates/manage_consent.gohtml",
+		)),
+		Error: template.Must(template.ParseFS(
+			ui.Templates,
+			"templates/base.gohtml",
+			"templates/errors.gohtml",
+		)),
+	}
+
+	return cache
+}
+
+func renderNoEmailsInClientCertificate(
+	logger *slog.Logger,
+	templates TemplateCache,
+	trans *services.I18NService,
+	w http.ResponseWriter,
+	localizer *i18n.Localizer,
+) {
+	msg := trans.LookupMessage
+
+	err := templates[NoEmailsInClientCertificate].Lookup("base").Execute(w, map[string]interface{}{
+		"Title":       msg("NoEmailsInClientCertificateTitle", nil, localizer),
+		"Explanation": msg("NoEmailsInClientCertificateExplanation", nil, localizer),
+	})
+	if err != nil {
+		logger.Error("template rendering failed", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+}
--- a/internal/handlers/consent.go
+++ b/internal/handlers/consent.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -22,6 +22,7 @@ import (
 	"errors"
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"strings"
@ -29,30 +30,26 @@ import (

 	"github.com/go-playground/form/v4"
 	"github.com/gorilla/csrf"
+	"github.com/gorilla/sessions"
 	"github.com/lestrrat-go/jwx/jwt/openid"
 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	"github.com/ory/hydra-client-go/client/admin"
-	hydra "github.com/ory/hydra-client-go/models"
-	log "github.com/sirupsen/logrus"
+	client "github.com/ory/hydra-client-go/v2"

 	"code.cacert.org/cacert/oidc-idp/internal/models"
-	"code.cacert.org/cacert/oidc-idp/ui"
-
 	"code.cacert.org/cacert/oidc-idp/internal/services"
 )

 type ConsentHandler struct {
-	adminClient     admin.ClientService
-	bundle          *i18n.Bundle
-	consentTemplate *template.Template
-	logger          *log.Logger
-	messageCatalog  *services.MessageCatalog
+	logger      *slog.Logger
+	trans       *services.I18NService
+	adminClient client.OAuth2API
+	templates   TemplateCache
 }

 type ConsentInformation struct {
 	GrantedScopes  []string `form:"scope"`
 	SelectedClaims []string `form:"claims"`
-	ConsentChecked bool     `form:"consent"`
+	ConsentAction  string   `form:"consent"`
 }

 type UserInfo struct {
@ -71,8 +68,6 @@ const (
 	ScopeEmail         = "email"
 )

-const OneDayInSeconds = 86400
-
 func init() {
 	supportedScopes = make(map[string]*i18n.Message)
 	supportedScopes[ScopeOpenID] = &i18n.Message{
@ -113,10 +108,9 @@ func (i *UserInfo) GetFullName() string {
 func (h *ConsentHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	challenge := r.URL.Query().Get("consent_challenge")

-	h.logger.WithField("consent_challenge", challenge).Debug("received consent challenge")
+	h.logger.Debug("received consent challenge", "consent_challenge", challenge)

-	accept := r.Header.Get("Accept-Language")
-	localizer := i18n.NewLocalizer(h.bundle, accept)
+	localizer := getLocalizer(h.trans, r)

 	// retrieve consent information
 	consentData, requestedClaims, err := h.getRequestedConsentInformation(challenge, r)
@ -125,82 +119,195 @@ func (h *ConsentHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	switch r.Method {
-	case http.MethodGet:
-		if err := h.renderConsentForm(w, r, consentData, requestedClaims, localizer); err != nil {
-			h.logger.WithError(err).Error("could not render consent form")
+	session, err := GetSession(r)
+	if err != nil {
+		h.logger.Error("could get session for request", "error", err)
+
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}
+
+	switch r.Method {
+	case http.MethodGet:
+		h.handleGet(w, r, consentData, requestedClaims, session, challenge, localizer)
 	case http.MethodPost:
+		h.handlePost(w, r, consentData, requestedClaims, session, challenge)
+	}
+}
+
+func (h *ConsentHandler) handleGet(
+	w http.ResponseWriter,
+	r *http.Request,
+	consentData *client.OAuth2ConsentRequest,
+	requestedClaims *models.OIDCClaimsRequest,
+	session *sessions.Session,
+	challenge string,
+	localizer *i18n.Localizer,
+) {
+	// Hydra has a previous session for this user and client
+	if consentData.GetSkip() {
+		consentRequest, err := h.handleExistingConsent(consentData, requestedClaims, session)
+		if err != nil {
+			h.logger.Error("could not handle existing consent", "error", err)
+
+			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+			return
+		}
+
+		err = h.acceptConsent(w, r, challenge, consentRequest)
+		if err != nil {
+			h.logger.Error("could not accept consent", "error", err)
+
+			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+		}
+
+		return
+	}
+
+	h.renderConsentForm(w, r, consentData, requestedClaims, localizer)
+}
+
+func (h *ConsentHandler) handlePost(
+	w http.ResponseWriter,
+	r *http.Request,
+	consentData *client.OAuth2ConsentRequest,
+	requestedClaims *models.OIDCClaimsRequest,
+	session *sessions.Session,
+	challenge string,
+) {
 	var consentInfo ConsentInformation

 	// validate input
 	decoder := form.NewDecoder()
 	if err := decoder.Decode(&consentInfo, r.Form); err != nil {
-			h.logger.WithError(err).Error("could not decode consent form")
+		h.logger.Error("could not decode consent form", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

-		if consentInfo.ConsentChecked {
-			sessionData, err := h.getSessionData(r, consentInfo, requestedClaims, consentData.Payload)
+	if consentInfo.ConsentAction == "consent" {
+		consentRequest, err := h.rememberNewConsent(consentData, consentInfo, requestedClaims, session)
 		if err != nil {
-				h.logger.WithError(err).Error("could not get session data")
-				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+			h.logger.Error("could not accept consent", "error", err)

-				return
+			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 		}

-			consentRequest, err := h.adminClient.AcceptConsentRequest(
-				admin.NewAcceptConsentRequestParams().WithConsentChallenge(challenge).WithBody(
-					&hydra.AcceptConsentRequest{
-						GrantAccessTokenAudience: nil,
-						GrantScope:               consentInfo.GrantedScopes,
-						HandledAt:                hydra.NullTime(time.Now()),
-						Remember:                 true,
-						RememberFor:              OneDayInSeconds,
-						Session:                  sessionData,
-					}).WithTimeout(TimeoutTen))
+		err = h.acceptConsent(w, r, challenge, consentRequest)
 		if err != nil {
-				h.logger.WithError(err).Error("accept consent request failed")
+			h.logger.Error("could not accept consent", "error", err)
+
+			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+		}
+
+		return
+	}
+
+	consentRequest, response, err := h.adminClient.RejectOAuth2ConsentRequest(
+		r.Context(),
+	).ConsentChallenge(challenge).Execute()
+	if err != nil {
+		h.logger.Error("reject consent request failed", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

-			w.Header().Add("Location", *consentRequest.GetPayload().RedirectTo)
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug(
+		"received response for RejectOAuth2ConsentRequest",
+		"response", response.Status, "reject_consent_request", consentRequest,
+	)
+
+	w.Header().Add("Location", consentRequest.GetRedirectTo())
+	w.WriteHeader(http.StatusFound)
+}
+
+func (h *ConsentHandler) rememberNewConsent(
+	consentData *client.OAuth2ConsentRequest,
+	consentInfo ConsentInformation,
+	requestedClaims *models.OIDCClaimsRequest,
+	session *sessions.Session,
+) (*client.AcceptOAuth2ConsentRequest, error) {
+	sessionData, err := h.getSessionData(
+		consentData.GetRequestedScope(),
+		consentInfo.GrantedScopes,
+		consentInfo.SelectedClaims,
+		requestedClaims,
+		session,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("could not get session data: %w", err)
+	}
+
+	request := client.NewAcceptOAuth2ConsentRequestWithDefaults()
+	request.SetRemember(true)
+	request.SetHandledAt(time.Now())
+	request.SetGrantAccessTokenAudience(consentData.RequestedAccessTokenAudience)
+	request.SetGrantScope(consentInfo.GrantedScopes)
+	request.SetRememberFor(0)
+	request.SetSession(*sessionData)
+
+	return request, nil
+}
+
+func (h *ConsentHandler) acceptConsent(
+	w http.ResponseWriter, r *http.Request, challenge string, request *client.AcceptOAuth2ConsentRequest,
+) error {
+	oAuth2RedirectTo, response, err := h.adminClient.AcceptOAuth2ConsentRequest(
+		r.Context(),
+	).ConsentChallenge(challenge).AcceptOAuth2ConsentRequest(*request).Execute()
+	if err != nil {
+		return fmt.Errorf("accept consent request failed: %w", err)
+	}
+
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug(
+		"received response for AcceptOAuth2ConsentRequest",
+		"response", response.Status, "redirect_to", oAuth2RedirectTo,
+	)
+
+	w.Header().Add("Location", oAuth2RedirectTo.GetRedirectTo())
 	w.WriteHeader(http.StatusFound)

-			return
-		}
+	return nil
+}

-		consentRequest, err := h.adminClient.RejectConsentRequest(
-			admin.NewRejectConsentRequestParams().WithConsentChallenge(challenge).WithBody(
-				&hydra.RejectRequest{}))
+func (h *ConsentHandler) handleExistingConsent(
+	data *client.OAuth2ConsentRequest,
+	claims *models.OIDCClaimsRequest,
+	session *sessions.Session,
+) (*client.AcceptOAuth2ConsentRequest, error) {
+	sessionData, err := h.getSessionData(data.GetRequestedScope(),
+		data.GetRequestedScope(), []string{}, claims, session)
 	if err != nil {
-			h.logger.WithError(err).Error("reject consent request failed")
-			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
-
-			return
+		return nil, fmt.Errorf("could not get session data: %w", err)
 	}

-		w.Header().Add("Location", *consentRequest.GetPayload().RedirectTo)
-		w.WriteHeader(http.StatusFound)
-	}
+	request := client.NewAcceptOAuth2ConsentRequestWithDefaults()
+	request.SetGrantScope(data.RequestedScope)
+	request.SetHandledAt(time.Now())
+	request.SetGrantAccessTokenAudience(data.RequestedAccessTokenAudience)
+	request.SetSession(*sessionData)
+
+	return request, nil
 }

 func (h *ConsentHandler) getRequestedConsentInformation(challenge string, r *http.Request) (
-	*admin.GetConsentRequestOK,
+	*client.OAuth2ConsentRequest,
 	*models.OIDCClaimsRequest,
 	error,
 ) {
-	consentData, err := h.adminClient.GetConsentRequest(
-		admin.NewGetConsentRequestParams().WithConsentChallenge(challenge))
+	consentRequest, response, err := h.adminClient.GetOAuth2ConsentRequest(
+		r.Context(),
+	).ConsentChallenge(challenge).Execute()
 	if err != nil {
-		h.logger.WithError(err).Error("error getting consent information")
+		h.logger.Error("error getting consent information", "error", err)

 		if errorBucket := GetErrorBucket(r); errorBucket != nil {
 			errorDetails := &ErrorDetails{
@ -214,73 +321,85 @@ func (h *ConsentHandler) getRequestedConsentInformation(challenge string, r *htt
 		return nil, nil, fmt.Errorf("error getting consent information: %w", err)
 	}

+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug(
+		"response for GetOAuth2ConsentRequest",
+		"response", response.Status, "consent_request", consentRequest,
+	)
+
 	var requestedClaims models.OIDCClaimsRequest

-	requestURL, err := url.Parse(consentData.Payload.RequestURL)
+	requestURLStr := consentRequest.GetRequestUrl()
+
+	requestURL, err := url.Parse(requestURLStr)
 	if err != nil {
-		h.logger.WithError(err).WithField(
-			"request_url", consentData.Payload.RequestURL,
-		).Warn("could not parse original request URL")
+		h.logger.Warn(
+			"could not parse original request URL",
+			"error", err, "request_url", requestURLStr,
+		)
 	} else {
 		claimsParameter := requestURL.Query().Get("claims")
 		if claimsParameter != "" {
 			decoder := json.NewDecoder(strings.NewReader(claimsParameter))
+
 			err := decoder.Decode(&requestedClaims)
 			if err != nil {
-				h.logger.WithError(err).WithField(
-					"claims_parameter", claimsParameter,
-				).Warn("ignoring claims request parameter that could not be decoded")
+				h.logger.Warn(
+					"ignoring claims request parameter that could not be decoded",
+					"error", err, "claims_parameter", claimsParameter,
+				)
 			}
 		}
 	}

-	return consentData, &requestedClaims, nil
+	return consentRequest, &requestedClaims, nil
 }

 func (h *ConsentHandler) renderConsentForm(
 	w http.ResponseWriter,
 	r *http.Request,
-	consentData *admin.GetConsentRequestOK,
+	consentRequest *client.OAuth2ConsentRequest,
 	claims *models.OIDCClaimsRequest,
 	localizer *i18n.Localizer,
-) error {
-	trans := func(id string, values ...map[string]interface{}) string {
-		if len(values) > 0 {
-			return h.messageCatalog.LookupMessage(id, values[0], localizer)
-		}
-
-		return h.messageCatalog.LookupMessage(id, nil, localizer)
+) {
+	trans := h.trans.LookupMessage
+	transMarkdown := func(id string, params map[string]interface{}, localizer *i18n.Localizer) template.HTML {
+		return template.HTML( //nolint:gosec
+			h.trans.LookupMarkdownMessage(id, params, localizer),
+		)
 	}

 	// render consent form
-	client := consentData.GetPayload().Client
-	err := h.consentTemplate.Lookup("base").Execute(w, map[string]interface{}{
-		"Title":           trans("TitleRequestConsent"),
+	oAuth2Client := consentRequest.Client
+	clientLogoURI := oAuth2Client.GetLogoUri()
+	clientName := template.HTMLEscaper(oAuth2Client.GetClientName())
+	clientURI := oAuth2Client.GetClientUri()
+
+	h.templates.render(h.logger, w, Consent, map[string]interface{}{
+		"Title":              trans("TitleRequestConsent", nil, localizer),
 		csrf.TemplateTag:     csrf.TemplateField(r),
 		"errors":             map[string]string{},
-		"client":          client,
-		"requestedScope":  h.mapRequestedScope(consentData.GetPayload().RequestedScope, localizer),
+		"LogoURI":            clientLogoURI,
+		"ClientName":         clientName,
+		"requestedScope":     h.mapRequestedScope(consentRequest.RequestedScope, localizer),
 		"requestedClaims":    h.mapRequestedClaims(claims, localizer),
-		"LabelSubmit":     trans("LabelSubmit"),
-		"LabelConsent":    trans("LabelConsent"),
-		"IntroMoreInformation": template.HTML( //nolint:gosec
-			trans("IntroConsentMoreInformation", map[string]interface{}{
-				"client":     client.ClientName,
-				"clientLink": client.ClientURI,
-			})),
-		"ClaimsInformation": template.HTML( //nolint:gosec
-			trans("ClaimsInformation", nil)),
-		"IntroConsentRequested": template.HTML( //nolint:gosec
-			trans("IntroConsentRequested", map[string]interface{}{
-				"client": client.ClientName,
-			})),
+		"ButtonTitleConsent": trans("ButtonTitleConsent", nil, localizer),
+		"ButtonTitleDeny":    trans("ButtonTitleDeny", nil, localizer),
+		"HasMoreInformation": clientURI != "",
+		"IntroMoreInformation": transMarkdown(
+			"IntroConsentMoreInformation", map[string]interface{}{
+				"client":     clientName,
+				"clientLink": clientURI,
+			}, localizer),
+		"LabelConsent": transMarkdown("LabelConsent", nil, localizer),
+		"ClaimsInformation": transMarkdown(
+			"ClaimsInformation", nil, localizer),
+		"IntroConsentRequested": transMarkdown(
+			"IntroConsentRequested", map[string]interface{}{
+				"client": clientName,
+			}, localizer),
 	})
-
-	if err != nil {
-		return fmt.Errorf("rendering failed: %w", err)
-	}
-
-	return nil
 }

 type scopeWithLabel struct {
@ -289,14 +408,14 @@ type scopeWithLabel struct {
 }

 func (h *ConsentHandler) mapRequestedScope(
-	scope hydra.StringSlicePipeDelimiter,
+	scope []string,
 	localizer *i18n.Localizer,
 ) []*scopeWithLabel {
 	result := make([]*scopeWithLabel, 0)

 	for _, scopeName := range scope {
 		if _, ok := supportedScopes[scopeName]; !ok {
-			h.logger.WithField("scope", scopeName).Warn("ignoring unsupported scope")
+			h.logger.Warn("ignoring unsupported scope", "scope", scopeName)

 			continue
 		}
@ -305,7 +424,7 @@ func (h *ConsentHandler) mapRequestedScope(
 			DefaultMessage: supportedScopes[scopeName],
 		})
 		if err != nil {
-			h.logger.WithError(err).WithField("scope", scopeName).Warn("could not localize scope label")
+			h.logger.Warn("could not localize scope label", "error", err, "scope", scopeName)
 			label = scopeName
 		}

@ -331,8 +450,14 @@ func (h *ConsentHandler) mapRequestedClaims(
 	for _, claimElement := range []*models.ClaimElement{claims.GetUserInfo(), claims.GetIDToken()} {
 		if claimElement != nil {
 			for k, v := range *claimElement {
+				if v == nil {
+					h.logger.Warn("claim element is nil", "key", k)
+
+					continue
+				}
+
 				if _, ok := supportedClaims[k]; !ok {
-					h.logger.WithField("claim", k).Warn("ignoring unsupported claim")
+					h.logger.Warn("ignoring unsupported claim", "claim", k)

 					continue
 				}
@ -341,7 +466,7 @@ func (h *ConsentHandler) mapRequestedClaims(
 					DefaultMessage: supportedClaims[k],
 				})
 				if err != nil {
-					h.logger.WithError(err).WithField("claim", k).Warn("could not localize claim label")
+					h.logger.Warn("could not localize claim label", "error", err, "claim", k)
 					label = k
 				}

@ -361,41 +486,43 @@ func (h *ConsentHandler) mapRequestedClaims(
 }

 func (h *ConsentHandler) getSessionData(
-	r *http.Request,
-	info ConsentInformation,
+	requestedScopes,
+	grantedScopes,
+	selectedClaims []string,
 	claims *models.OIDCClaimsRequest,
-	payload *hydra.ConsentRequest,
-) (*hydra.ConsentRequestSession, error) {
-	idTokenData := make(map[string]interface{}, 0)
-	accessTokenData := make(map[string]interface{}, 0)
+	session *sessions.Session,
+) (*client.AcceptOAuth2ConsentRequestSession, error) {
+	idTokenData := make(map[string]interface{})

-	userInfo := h.GetUserInfoFromClientCertificate(r, payload.Subject)
-
-	if err := h.fillTokenData(accessTokenData, payload.RequestedScope, claims, info, userInfo); err != nil {
+	if err := h.fillTokenData(
+		idTokenData,
+		requestedScopes,
+		grantedScopes,
+		claims,
+		selectedClaims,
+		session.Values,
+	); err != nil {
 		return nil, err
 	}

-	if err := h.fillTokenData(idTokenData, payload.RequestedScope, claims, info, userInfo); err != nil {
-		return nil, err
-	}
+	consentSession := client.NewAcceptOAuth2ConsentRequestSession()
+	consentSession.SetIdToken(idTokenData)

-	return &hydra.ConsentRequestSession{
-		AccessToken: accessTokenData,
-		IDToken:     idTokenData,
-	}, nil
+	return consentSession, nil
 }

 func (h *ConsentHandler) fillTokenData(
 	m map[string]interface{},
-	requestedScope hydra.StringSlicePipeDelimiter,
+	requestedScopes []string,
+	grantedScopes []string,
 	claimsRequest *models.OIDCClaimsRequest,
-	consentInformation ConsentInformation,
-	userInfo *UserInfo,
+	selectedClaims []string,
+	sessionData map[interface{}]interface{},
 ) error {
-	for _, scope := range requestedScope {
+	for _, scope := range requestedScopes {
 		granted := false

-		for _, k := range consentInformation.GrantedScopes {
+		for _, k := range grantedScopes {
 			if k == scope {
 				granted = true

@ -412,8 +539,8 @@ func (h *ConsentHandler) fillTokenData(
 			// email
 			// OPTIONAL. This scope value requests access to the email and
 			// email_verified Claims.
-			m[openid.EmailKey] = userInfo.Email
-			m[openid.EmailVerifiedKey] = userInfo.EmailVerified
+			m[openid.EmailKey] = sessionData[services.SessionEmail]
+			m[openid.EmailVerifiedKey] = true
 		case ScopeProfile:
 			// profile
 			// OPTIONAL. This scope value requests access to the
@ -421,12 +548,12 @@ func (h *ConsentHandler) fillTokenData(
 			// family_name, given_name, middle_name, nickname,
 			// preferred_username, profile, picture, website, gender,
 			// birthdate, zoneinfo, locale, and updated_at.
-			m[openid.NameKey] = userInfo.GetFullName()
+			m[openid.NameKey] = sessionData[services.SessionFullName]
 		}
 	}

 	if userInfoClaims := claimsRequest.GetUserInfo(); userInfoClaims != nil {
-		err := h.parseUserInfoClaims(m, userInfoClaims, consentInformation)
+		err := h.parseUserInfoClaims(m, userInfoClaims, selectedClaims)
 		if err != nil {
 			return err
 		}
@ -438,12 +565,12 @@ func (h *ConsentHandler) fillTokenData(
 func (h *ConsentHandler) parseUserInfoClaims(
 	m map[string]interface{},
 	userInfoClaims *models.ClaimElement,
-	consentInformation ConsentInformation,
+	selectedClaims []string,
 ) error {
 	for claimName, claim := range *userInfoClaims {
 		granted := false

-		for _, k := range consentInformation.SelectedClaims {
+		for _, k := range selectedClaims {
 			if k == claimName {
 				granted = true

@ -469,43 +596,9 @@ func (h *ConsentHandler) parseUserInfoClaims(
 		}

 		if claim.IsEssential() {
-			h.logger.WithField("claim", claimName).Warn("handling for essential claim not implemented")
+			h.logger.Warn("handling for essential claim not implemented", "claim", claimName)
 		} else {
-			h.logger.WithField("claim", claimName).Warn("handling for claim not implemented")
-		}
-	}
-
-	return nil
-}
-
-func (h *ConsentHandler) GetUserInfoFromClientCertificate(r *http.Request, subject string) *UserInfo {
-	if r.TLS != nil && r.TLS.PeerCertificates != nil && len(r.TLS.PeerCertificates) > 0 {
-		firstCert := r.TLS.PeerCertificates[0]
-
-		var verified bool
-
-		for _, email := range firstCert.EmailAddresses {
-			h.logger.WithField(
-				"email", email,
-			).Info("authenticated with client certificate for email address")
-
-			if subject == email {
-				verified = true
-			}
-		}
-
-		if !verified {
-			h.logger.WithField(
-				"subject", subject,
-			).Warn("authentication attempt with a wrong certificate that did not contain the requested address")
-
-			return nil
-		}
-
-		return &UserInfo{
-			Email:         subject,
-			EmailVerified: verified,
-			CommonName:    firstCert.Subject.CommonName,
+			h.logger.Warn("handling for claim not implemented", "claim", claimName)
 		}
 	}

@ -513,23 +606,12 @@ func (h *ConsentHandler) GetUserInfoFromClientCertificate(r *http.Request, subje
 }

 func NewConsentHandler(
-	logger *log.Logger,
-	bundle *i18n.Bundle,
-	messageCatalog *services.MessageCatalog,
-	adminClient admin.ClientService,
+	logger *slog.Logger, templateCache TemplateCache, trans *services.I18NService, adminClient client.OAuth2API,
 ) *ConsentHandler {
-	consentTemplate := template.Must(
-		template.ParseFS(
-			ui.Templates,
-			"templates/base.gohtml",
-			"templates/consent.gohtml",
-		))
-
 	return &ConsentHandler{
-		adminClient:     adminClient,
-		bundle:          bundle,
-		consentTemplate: consentTemplate,
 		logger:      logger,
-		messageCatalog:  messageCatalog,
+		trans:       trans,
+		adminClient: adminClient,
+		templates:   templateCache,
 	}
 }
--- a/internal/handlers/doc.go
+++ b/internal/handlers/doc.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
--- a/internal/handlers/error.go
+++ b/internal/handlers/error.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -22,12 +22,9 @@ import (
 	"context"
 	"fmt"
 	"html/template"
-	"io/fs"
+	"log/slog"
 	"net/http"

-	"github.com/nicksnyder/go-i18n/v2/i18n"
-	log "github.com/sirupsen/logrus"
-
 	"code.cacert.org/cacert/oidc-idp/internal/services"
 	"code.cacert.org/cacert/oidc-idp/ui"
 )
@ -46,34 +43,24 @@ type ErrorDetails struct {
 }

 type ErrorBucket struct {
+	logger       *slog.Logger
+	trans        *services.I18NService
 	errorDetails *ErrorDetails
-	templates      *template.Template
-	logger         *log.Logger
-	bundle         *i18n.Bundle
-	messageCatalog *services.MessageCatalog
+	templates    TemplateCache
 }

 func (b *ErrorBucket) serveHTTP(w http.ResponseWriter, r *http.Request) {
 	if b.errorDetails != nil {
-		accept := r.Header.Get("Accept-Language")
-		localizer := i18n.NewLocalizer(b.bundle, accept)
-		err := b.templates.Lookup("base").Execute(w, map[string]interface{}{
-			"Title": b.messageCatalog.LookupMessage(
+		localizer := getLocalizer(b.trans, r)
+
+		b.templates.render(b.logger, w, Error, map[string]interface{}{
+			"Title": b.trans.LookupMessage(
 				"ErrorTitle",
 				nil,
 				localizer,
 			),
 			"details": b.errorDetails,
 		})
-
-		if err != nil {
-			log.Errorf("error rendering error template: %v", err)
-			http.Error(
-				w,
-				http.StatusText(http.StatusInternalServerError),
-				http.StatusInternalServerError,
-			)
-		}
 	}
 }

@ -102,9 +89,7 @@ func (w *errorResponseWriter) WriteHeader(code int) {
 	if code >= http.StatusBadRequest {
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")

-		w.errorBucket.AddError(&ErrorDetails{
-			ErrorMessage: http.StatusText(code),
-		})
+		w.errorBucket.AddError(&ErrorDetails{ErrorCode: "HTTP error"})
 	}

 	w.ResponseWriter.WriteHeader(code)
@ -132,27 +117,14 @@ func (w *errorResponseWriter) Write(content []byte) (int, error) {
 }

 func ErrorHandling(
-	logger *log.Logger,
-	templateFS fs.FS,
-	bundle *i18n.Bundle,
-	messageCatalog *services.MessageCatalog,
+	logger *slog.Logger, templateCache TemplateCache, trans *services.I18NService,
 ) (func(http.Handler) http.Handler, error) {
-	errorTemplates, err := template.ParseFS(
-		templateFS,
-		"templates/base.gohtml",
-		"templates/errors.gohtml",
-	)
-	if err != nil {
-		return nil, fmt.Errorf("could not parse templates: %w", err)
-	}
-
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			errorBucket := &ErrorBucket{
-				templates:      errorTemplates,
 				logger:    logger,
-				bundle:         bundle,
-				messageCatalog: messageCatalog,
+				trans:     trans,
+				templates: templateCache,
 			}
 			next.ServeHTTP(
 				&errorResponseWriter{w, errorBucket, http.StatusOK},
@ -164,9 +136,8 @@ func ErrorHandling(
 }

 type ErrorHandler struct {
-	logger         *log.Logger
-	bundle         *i18n.Bundle
-	messageCatalog *services.MessageCatalog
+	logger   *slog.Logger
+	trans    *services.I18NService
 	template *template.Template
 }

@ -177,21 +148,20 @@ func (h *ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	accept := r.Header.Get("Accept-Language")
-	localizer := i18n.NewLocalizer(h.bundle, accept)
+	localizer := getLocalizer(h.trans, r)

 	errorName := r.URL.Query().Get("error")
 	errorDescription := r.URL.Query().Get("error_description")

-	h.logger.WithFields(log.Fields{
-		"error_name":        errorName,
-		"error_description": errorDescription,
-	}).Debug("error from Hydra")
+	h.logger.Debug(
+		"error from Hydra",
+		"error_name", errorName, "error_description", errorDescription,
+	)

 	rendered := bytes.NewBuffer(make([]byte, 0))

-	msg := h.messageCatalog.LookupMessage
-	msgMarkdown := h.messageCatalog.LookupMarkdownMessage
+	msg := h.trans.LookupMessage
+	msgMarkdown := h.trans.LookupMarkdownMessage

 	err := h.template.Lookup("base").Execute(rendered, map[string]interface{}{
 		"Title": msg("AuthServerErrorTitle", nil, localizer),
@ -201,7 +171,7 @@ func (h *ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		"ErrorMessage": errorDescription,
 	})
 	if err != nil {
-		h.logger.WithError(err).Error("template rendering failed")
+		h.logger.Error("template rendering failed", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
@ -213,11 +183,10 @@ func (h *ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write(rendered.Bytes())
 }

-func NewErrorHandler(logger *log.Logger, bundle *i18n.Bundle, messageCatalog *services.MessageCatalog) *ErrorHandler {
+func NewErrorHandler(logger *slog.Logger, trans *services.I18NService) *ErrorHandler {
 	return &ErrorHandler{
 		logger: logger,
-		bundle:         bundle,
-		messageCatalog: messageCatalog,
+		trans:  trans,
 		template: template.Must(template.ParseFS(
 			ui.Templates,
 			"templates/base.gohtml",
--- a/internal/handlers/login.go
+++ b/internal/handlers/login.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -19,48 +19,40 @@ package handlers

 import (
 	"bytes"
-	"crypto/x509"
-	"errors"
+	"context"
 	"fmt"
 	"html/template"
+	"io"
+	"log/slog"
 	"net/http"
-	"strconv"
-	"time"

 	"github.com/gorilla/csrf"
 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	"github.com/ory/hydra-client-go/client/admin"
-	hydra "github.com/ory/hydra-client-go/models"
-	log "github.com/sirupsen/logrus"
+	client "github.com/ory/hydra-client-go/v2"

 	"code.cacert.org/cacert/oidc-idp/internal/services"
-	"code.cacert.org/cacert/oidc-idp/ui"
 )

 type acrType string

 const (
-	ClientCertificate acrType = "cert" // client certificate login
-	// ClientCertificateOTP   acrType = "cert+otp"
-	// ClientCertificateToken acrType = "cert+token"
+	// ClientCertificate represents a client certificate login
+	ClientCertificate acrType = "urn:cacert:1fa:cert"
+	// ClientCertificateOTP   acrType = "urn:cacert:2fa:cert+otp"
+	// ClientCertificateToken acrType = "urn:cacert:2fa:cert+token"
 )

-type templateName string
+type contextKey int

 const (
-	CertificateLogin            templateName = "cert"
-	NoEmailsInClientCertificate templateName = "no_emails"
-	NoChallengeInRequest        templateName = "no_challenge"
+	ctxKeyMessage contextKey = iota
 )

-const TimeoutTen = 10 * time.Second
-
 type LoginHandler struct {
-	adminClient    admin.ClientService
-	bundle         *i18n.Bundle
-	logger         *log.Logger
-	templates      map[templateName]*template.Template
-	messageCatalog *services.MessageCatalog
+	logger      *slog.Logger
+	trans       *services.I18NService
+	adminClient client.OAuth2API
+	templates   TemplateCache
 }

 func (h *LoginHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
@ -70,8 +62,7 @@ func (h *LoginHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	accept := r.Header.Get("Accept-Language")
-	localizer := i18n.NewLocalizer(h.bundle, accept)
+	localizer := getLocalizer(h.trans, r)

 	challenge := r.URL.Query().Get("login_challenge")

@ -81,12 +72,12 @@ func (h *LoginHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	h.logger.WithField("challenge", challenge).Debug("received login challenge")
+	h.logger.Debug("received login challenge", "challenge", challenge)

-	certEmails := h.getEmailAddressesFromClientCertificate(r)
+	certFullName, certEmails := getDataFromClientCert(h.logger, r)

 	if certEmails == nil {
-		h.renderNoEmailsInClientCertificate(w, localizer)
+		renderNoEmailsInClientCertificate(h.logger, h.templates, h.trans, w, localizer)

 		return
 	}
@ -94,7 +85,7 @@ func (h *LoginHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if r.Method == http.MethodGet {
 		h.handleGet(w, r, challenge, certEmails, localizer)
 	} else {
-		h.handlePost(w, r, challenge, certEmails, localizer)
+		h.handlePost(w, r, challenge, certFullName, certEmails, localizer)
 	}
 }

@ -105,161 +96,217 @@ func (h *LoginHandler) handleGet(
 	certEmails []string,
 	localizer *i18n.Localizer,
 ) {
-	loginRequest, err := h.adminClient.GetLoginRequest(admin.NewGetLoginRequestParams().WithLoginChallenge(challenge))
+	oAuth2LoginRequest, response, err := h.adminClient.GetOAuth2LoginRequest(
+		r.Context(),
+	).LoginChallenge(challenge).Execute()
 	if err != nil {
-		h.logger.WithError(err).WithField(
-			"challenge", challenge,
-		).Warn("could not get login request for challenge")
-
-		var notFound *admin.GetLoginRequestNotFound
-
-		if errors.As(err, &notFound) {
-			w.WriteHeader(http.StatusNotFound)
-
-			http.Error(w, notFound.GetPayload().ErrorDescription, http.StatusNotFound)
-
-			return
-		}
-
-		var gone *admin.GetLoginRequestGone
-
-		if errors.As(err, &gone) {
-			w.Header().Set("Location", *gone.GetPayload().RedirectTo)
-			w.WriteHeader(http.StatusGone)
-
-			return
-		}
+		h.logger.Warn(
+			"could not get login request for challenge",
+			"error", err, "challenge", challenge,
+		)

 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

-	h.renderRequestForClientCert(w, r, certEmails, localizer, loginRequest)
+	usableEmails := certEmails
+
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug(
+		"got response for GetOAuth2LoginRequest",
+		"response", response.Status, "login_request", oAuth2LoginRequest,
+	)
+
+	if subject, ok := oAuth2LoginRequest.GetSubjectOk(); ok && *subject != "" {
+		h.logger.Info("oauth2LoginRequest expects subject", "subject", *subject)
+
+		subjectInCert := false
+
+		for _, email := range certEmails {
+			if *subject == email {
+				subjectInCert = true
+
+				break
+			}
+		}
+
+		if !subjectInCert {
+			h.rejectLoginMissingSubject(w, r, challenge, localizer, *subject)
+
+			return
+		}
+
+		usableEmails = []string{*subject}
+	}
+
+	h.renderRequestForClientCert(w, r, usableEmails, localizer, oAuth2LoginRequest)
+}
+
+type FlashMessage struct {
+	Type    string
+	Message string
 }

 func (h *LoginHandler) handlePost(
 	w http.ResponseWriter,
 	r *http.Request,
 	challenge string,
+	certFullName string,
 	certEmails []string,
 	localizer *i18n.Localizer,
 ) {
 	if r.FormValue("use-identity") != "accept" {
-		h.rejectLogin(w, challenge, localizer)
+		h.rejectLogin(w, r, challenge, localizer)
+
+		return
+	}
+
+	if r.FormValue("email") == "" {
+		h.handleGet(w, r.WithContext(context.WithValue(
+			r.Context(),
+			ctxKeyMessage,
+			FlashMessage{
+				Type:    "warning",
+				Message: h.trans.LookupMessage("NoEmailAddressSelected", nil, localizer),
+			},
+		)), challenge, certEmails, localizer)

 		return
 	}

 	// perform certificate auth
-	h.logger.WithField("emails", certEmails).Info("will perform certificate authentication")
+	h.logger.Info(
+		"will perform certificate authentication",
+		"emails", certEmails, "full_name", certFullName,
+	)

 	userID, err := h.performCertificateLogin(certEmails, r)
 	if err != nil {
+		h.logger.Error("could not perform certificate login", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	session, err := GetSession(r)
+	if err != nil {
+		h.logger.Error("could not perform certificate login", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	session.Values[services.SessionFullName] = certFullName
+	session.Values[services.SessionEmail] = userID
+	session.Options.HttpOnly = true
+	session.Options.Secure = true
+
+	if err = session.Save(r, w); err != nil {
+		h.logger.Error("could not save session", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

 	// finish login and redirect to target
-	loginRequest, err := h.adminClient.AcceptLoginRequest(
-		admin.NewAcceptLoginRequestParams().WithLoginChallenge(challenge).WithBody(
-			&hydra.AcceptLoginRequest{
-				Acr:         string(ClientCertificate),
-				Remember:    true,
-				RememberFor: 0,
-				Subject:     &userID,
-			}).WithTimeout(TimeoutTen))
+	acceptRequest := client.NewAcceptOAuth2LoginRequest(userID)
+	acceptRequest.SetRemember(true)
+	acceptRequest.SetRememberFor(0)
+	acceptRequest.SetAcr(string(ClientCertificate))
+
+	loginRequest, response, err := h.adminClient.AcceptOAuth2LoginRequest(
+		r.Context(),
+	).LoginChallenge(challenge).AcceptOAuth2LoginRequest(*acceptRequest).Execute()
 	if err != nil {
-		h.logger.WithError(err).Error("error getting login request")
+		h.logger.Error("error getting login request", "error", err)

-		h.fillAcceptLoginRequestErrorBucket(r, err)
-
-		return
-	}
-
-	w.Header().Add("Location", *loginRequest.GetPayload().RedirectTo)
-	w.WriteHeader(http.StatusFound)
-}
-
-func (h *LoginHandler) fillAcceptLoginRequestErrorBucket(r *http.Request, err error) {
-	if errorBucket := GetErrorBucket(r); errorBucket != nil {
-		var (
-			errorDetails               *ErrorDetails
-			acceptLoginRequestNotFound *admin.AcceptLoginRequestNotFound
-		)
-
-		if errors.As(err, &acceptLoginRequestNotFound) {
-			payload := acceptLoginRequestNotFound.GetPayload()
-			errorDetails = &ErrorDetails{
-				ErrorMessage: payload.Error,
-				ErrorDetails: []string{payload.ErrorDescription},
-			}
-
-			if acceptLoginRequestNotFound.Payload.StatusCode != 0 {
-				errorDetails.ErrorCode = strconv.Itoa(int(payload.StatusCode))
-			}
-		} else {
-			errorDetails = &ErrorDetails{
-				ErrorMessage: "could not accept login",
-				ErrorDetails: []string{err.Error()},
-			}
-		}
-
-		errorBucket.AddError(errorDetails)
-	}
-}
-
-func (h *LoginHandler) rejectLogin(w http.ResponseWriter, challenge string, localizer *i18n.Localizer) {
-	const Ten = 10 * time.Second
-
-	rejectLoginRequest, err := h.adminClient.RejectLoginRequest(
-		admin.NewRejectLoginRequestParams().WithLoginChallenge(challenge).WithBody(
-			&hydra.RejectRequest{
-				ErrorDescription: h.messageCatalog.LookupMessage("LoginDeniedByUser", nil, localizer),
-				ErrorHint:        h.messageCatalog.LookupMessage("HintChooseAnIdentityForAuthentication", nil, localizer),
-				StatusCode:       http.StatusForbidden,
-			},
-		).WithTimeout(Ten))
-	if err != nil {
-		h.logger.WithError(err).Error("error getting reject login request")
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

-	w.Header().Set("Location", *rejectLoginRequest.GetPayload().RedirectTo)
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug("got response for AcceptOAuth2LoginRequest",
+		"response", response.Status, "accept_login_request", loginRequest,
+	)
+
+	if h.logger.Enabled(r.Context(), slog.LevelDebug) {
+		if rb, err := io.ReadAll(response.Body); err == nil {
+			h.logger.Debug("response body from Hydra", "response_body", rb)
+		}
+	}
+
+	w.Header().Add("Location", loginRequest.GetRedirectTo())
 	w.WriteHeader(http.StatusFound)
 }

-func (h *LoginHandler) getEmailAddressesFromClientCertificate(r *http.Request) []string {
-	if r.TLS != nil && r.TLS.PeerCertificates != nil && len(r.TLS.PeerCertificates) > 0 {
-		firstCert := r.TLS.PeerCertificates[0]
+func (h *LoginHandler) rejectLogin(
+	w http.ResponseWriter,
+	r *http.Request,
+	challenge string,
+	localizer *i18n.Localizer,
+) {
+	rejectRequest := client.NewRejectOAuth2RequestWithDefaults()
+	rejectRequest.SetErrorDescription(h.trans.LookupMessage("LoginDeniedByUser", nil, localizer))
+	rejectRequest.SetErrorHint(h.trans.LookupMessage("HintChooseAnIdentityForAuthentication", nil, localizer))
+	rejectRequest.SetStatusCode(http.StatusForbidden)

-		if !isClientCertificate(firstCert) {
-			return nil
+	rejectLoginRequest, response, err := h.adminClient.RejectOAuth2LoginRequest(
+		r.Context(),
+	).LoginChallenge(challenge).RejectOAuth2Request(*rejectRequest).Execute()
+	if err != nil {
+		h.logger.Error("error sending reject login request", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
 	}

-		for _, email := range firstCert.EmailAddresses {
-			h.logger.WithField(
-				"email", email,
-			).Info("authenticated with a client certificate for email address")
-		}
+	defer func() { _ = response.Body.Close() }()

-		return firstCert.EmailAddresses
-	}
+	h.logger.DebugContext(
+		r.Context(),
+		"got response for RejectOAuth2LoginRequest",
+		"response", response.Status, "reject_login_request", rejectLoginRequest,
+	)

-	return nil
+	w.Header().Set("Location", rejectLoginRequest.GetRedirectTo())
+	w.WriteHeader(http.StatusFound)
 }

-func isClientCertificate(cert *x509.Certificate) bool {
-	for _, ext := range cert.ExtKeyUsage {
-		if ext == x509.ExtKeyUsageClientAuth {
-			return true
-		}
+func (h *LoginHandler) rejectLoginMissingSubject(
+	w http.ResponseWriter, r *http.Request, challenge string, localizer *i18n.Localizer, subject string,
+) {
+	rejectRequest := client.NewRejectOAuth2RequestWithDefaults()
+	rejectRequest.SetErrorDescription(h.trans.LookupMessage(
+		"LoginDeniedSubjectMissing", map[string]interface{}{"Subject": subject}, localizer),
+	)
+	rejectRequest.SetErrorHint(h.trans.LookupMessage("HintChooseDifferentClientCertificate", nil, localizer))
+	rejectRequest.SetStatusCode(http.StatusForbidden)
+
+	rejectLoginRequest, response, err := h.adminClient.RejectOAuth2LoginRequest(
+		r.Context()).LoginChallenge(challenge).RejectOAuth2Request(
+		*rejectRequest,
+	).Execute()
+	if err != nil {
+		h.logger.Error("error sending reject login request", "error", err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
 	}

-	return false
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.DebugContext(
+		r.Context(),
+		"got response for RejectOAuth2LoginRequest",
+		"response", response.Status, "reject_login_request", rejectLoginRequest,
+	)
+
+	w.Header().Set("Location", rejectLoginRequest.GetRedirectTo())
+	w.WriteHeader(http.StatusFound)
 }

 func (h *LoginHandler) renderRequestForClientCert(
@ -267,11 +314,11 @@ func (h *LoginHandler) renderRequestForClientCert(
 	r *http.Request,
 	emails []string,
 	localizer *i18n.Localizer,
-	loginRequest *admin.GetLoginRequestOK,
+	loginRequest *client.OAuth2LoginRequest,
 ) {
-	msg := h.messageCatalog.LookupMessage
-	msgPlural := h.messageCatalog.LookupMessagePlural
-	msgMarkdown := h.messageCatalog.LookupMarkdownMessage
+	msg := h.trans.LookupMessage
+	msgPlural := h.trans.LookupMessagePlural
+	msgMarkdown := h.trans.LookupMarkdownMessage

 	rendered := bytes.NewBuffer(make([]byte, 0))

@ -280,7 +327,7 @@ func (h *LoginHandler) renderRequestForClientCert(
 		csrf.TemplateTag: csrf.TemplateField(r),
 		"IntroText": template.HTML(msgMarkdown( //nolint:gosec
 			"CertLoginIntroText",
-			map[string]interface{}{"ClientName": loginRequest.GetPayload().Client.ClientName},
+			map[string]interface{}{"ClientName": loginRequest.Client.ClientName},
 			localizer,
 		)),
 		"EmailChoiceText": msgPlural("EmailChoiceText", nil, localizer, len(emails)),
@ -288,9 +335,10 @@ func (h *LoginHandler) renderRequestForClientCert(
 		"RequestText":     msg("CertLoginRequestText", nil, localizer),
 		"AcceptLabel":     msg("LabelAcceptCertLogin", nil, localizer),
 		"RejectLabel":     msg("LabelRejectCertLogin", nil, localizer),
+		"FlashMessage":    r.Context().Value(ctxKeyMessage),
 	})
 	if err != nil {
-		h.logger.WithError(err).Error("template rendering failed")
+		h.logger.Error("template rendering failed", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
@ -312,32 +360,17 @@ func (h *LoginHandler) performCertificateLogin(emails []string, r *http.Request)
 	return "", fmt.Errorf("no user found")
 }

-func (h *LoginHandler) renderNoEmailsInClientCertificate(w http.ResponseWriter, localizer *i18n.Localizer) {
-	msg := h.messageCatalog.LookupMessage
-
-	err := h.templates[NoEmailsInClientCertificate].Lookup("base").Execute(w, map[string]interface{}{
-		"Title":       msg("NoEmailsInClientCertificateTitle", nil, localizer),
-		"Explanation": msg("NoEmailsInClientCertificateExplanation", nil, localizer),
-	})
-	if err != nil {
-		h.logger.WithError(err).Error("template rendering failed")
-		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
-
-		return
-	}
-}
-
 func (h *LoginHandler) renderNoChallengeInRequest(w http.ResponseWriter, localizer *i18n.Localizer) {
 	err := h.templates[NoChallengeInRequest].Lookup("base").Execute(w, map[string]interface{}{
-		"Title": h.messageCatalog.LookupMessage("NoChallengeInRequestTitle", nil, localizer),
-		"Explanation": template.HTML(h.messageCatalog.LookupMarkdownMessage( //nolint:gosec
+		"Title": h.trans.LookupMessage("NoChallengeInRequestTitle", nil, localizer),
+		"Explanation": template.HTML(h.trans.LookupMarkdownMessage( //nolint:gosec
 			"NoChallengeInRequestExplanation",
 			nil,
 			localizer,
 		)),
 	})
 	if err != nil {
-		h.logger.WithError(err).Error("template rendering failed")
+		h.logger.Error("template rendering failed", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
@ -345,32 +378,12 @@ func (h *LoginHandler) renderNoChallengeInRequest(w http.ResponseWriter, localiz
 }

 func NewLoginHandler(
-	logger *log.Logger,
-	bundle *i18n.Bundle,
-	messageCatalog *services.MessageCatalog,
-	adminClient admin.ClientService,
+	logger *slog.Logger, tc TemplateCache, trans *services.I18NService, adminClient client.OAuth2API,
 ) *LoginHandler {
 	return &LoginHandler{
-		adminClient: adminClient,
-		bundle:      bundle,
 		logger:      logger,
-		templates: map[templateName]*template.Template{
-			CertificateLogin: template.Must(template.ParseFS(
-				ui.Templates,
-				"templates/base.gohtml",
-				"templates/client_certificate.gohtml",
-			)),
-			NoEmailsInClientCertificate: template.Must(template.ParseFS(
-				ui.Templates,
-				"templates/base.gohtml",
-				"templates/no_email_in_client_certificate.gohtml",
-			)),
-			NoChallengeInRequest: template.Must(template.ParseFS(
-				ui.Templates,
-				"templates/base.gohtml",
-				"templates/no_challenge_in_request.gohtml",
-			)),
-		},
-		messageCatalog: messageCatalog,
+		trans:       trans,
+		adminClient: adminClient,
+		templates:   tc,
 	}
 }
--- a/internal/handlers/logout.go
+++ b/internal/handlers/logout.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -18,53 +18,61 @@ limitations under the License.
 package handlers

 import (
-	"bytes"
 	"html/template"
+	"log/slog"
 	"net/http"
-	"time"

-	"github.com/nicksnyder/go-i18n/v2/i18n"
-	"github.com/ory/hydra-client-go/client/admin"
-	log "github.com/sirupsen/logrus"
+	client "github.com/ory/hydra-client-go/v2"

 	"code.cacert.org/cacert/oidc-idp/internal/services"
-	"code.cacert.org/cacert/oidc-idp/ui"
 )

 type LogoutHandler struct {
-	adminClient admin.ClientService
-	logger      *log.Logger
+	adminClient client.OAuth2API
+	logger      *slog.Logger
 }

 func (h *LogoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	const Ten = 10 * time.Second
-
 	challenge := r.URL.Query().Get("logout_challenge")
-	h.logger.WithField("challenge", challenge).Debug("received logout challenge")
+	h.logger.Debug("received logout challenge", "challenge", challenge)

-	logoutRequest, err := h.adminClient.GetLogoutRequest(
-		admin.NewGetLogoutRequestParams().WithLogoutChallenge(challenge).WithTimeout(Ten))
+	logoutRequest, response, err := h.adminClient.GetOAuth2LogoutRequest(
+		r.Context(),
+	).LogoutChallenge(challenge).Execute()
 	if err != nil {
-		h.logger.WithError(err).Error("error getting logout requests")
+		h.logger.Error("error getting logout requests", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

-	h.logger.WithField("logout_request", logoutRequest.Payload).Debug("received logout request")
+	defer func() { _ = response.Body.Close() }()

-	acceptLogoutRequest, err := h.adminClient.AcceptLogoutRequest(
-		admin.NewAcceptLogoutRequestParams().WithLogoutChallenge(challenge))
+	h.logger.Debug(
+		"got response for GetOAuth2LogoutRequest",
+		"response", response.Status, "logout_request", logoutRequest,
+	)
+
+	acceptLogoutRequest, response, err := h.adminClient.AcceptOAuth2LogoutRequest(
+		r.Context(),
+	).LogoutChallenge(challenge).Execute()
 	if err != nil {
-		h.logger.WithError(err).Error("accept logout request failed")
+		h.logger.Error("accept logout request failed", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 	}

-	w.Header().Set("Location", *acceptLogoutRequest.GetPayload().RedirectTo)
+	defer func() { _ = response.Body.Close() }()
+
+	h.logger.Debug(
+		"got response for AcceptOAuth2LogoutRequest",
+		"response", response.Status, "accept_logout_request", acceptLogoutRequest,
+	)
+
+	w.Header().Set("Location", acceptLogoutRequest.GetRedirectTo())
 	w.WriteHeader(http.StatusFound)
 }

-func NewLogoutHandler(logger *log.Logger, adminClient admin.ClientService) *LogoutHandler {
+func NewLogout(logger *slog.Logger, adminClient client.OAuth2API) *LogoutHandler {
 	return &LogoutHandler{
 		logger:      logger,
 		adminClient: adminClient,
@ -72,10 +80,9 @@ func NewLogoutHandler(logger *log.Logger, adminClient admin.ClientService) *Logo
 }

 type LogoutSuccessHandler struct {
-	bundle         *i18n.Bundle
-	logger         *log.Logger
-	messageCatalog *services.MessageCatalog
-	template       *template.Template
+	logger    *slog.Logger
+	trans     *services.I18NService
+	templates TemplateCache
 }

 func (h *LogoutSuccessHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
@ -85,41 +92,20 @@ func (h *LogoutSuccessHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 		return
 	}

-	accept := r.Header.Get("Accept-Language")
-	localizer := i18n.NewLocalizer(h.bundle, accept)
+	localizer := getLocalizer(h.trans, r)

-	rendered := bytes.NewBuffer(make([]byte, 0))
-
-	err := h.template.Lookup("base").Execute(rendered, map[string]interface{}{
-		"Title": h.messageCatalog.LookupMessage("LogoutSuccessfulTitle", nil, localizer),
-		"Explanation": template.HTML(h.messageCatalog.LookupMarkdownMessage( //nolint:gosec
+	h.templates.render(h.logger, w, LogoutSuccessful, map[string]interface{}{
+		"Title": h.trans.LookupMessage("LogoutSuccessfulTitle", nil, localizer),
+		"Explanation": template.HTML(h.trans.LookupMarkdownMessage( //nolint:gosec
 			"LogoutSuccessfulText",
 			nil,
 			localizer,
 		)),
 	})
-	if err != nil {
-		h.logger.WithError(err).Error("template rendering failed")
-		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
-
-		return
-	}
-
-	_, _ = w.Write(rendered.Bytes())
 }

-func NewLogoutSuccessHandler(
-	logger *log.Logger,
-	bundle *i18n.Bundle,
-	messageCatalog *services.MessageCatalog,
+func NewLogoutSuccess(
+	logger *slog.Logger, templateCache TemplateCache, trans *services.I18NService,
 ) *LogoutSuccessHandler {
-	return &LogoutSuccessHandler{
-		bundle:         bundle,
-		logger:         logger,
-		messageCatalog: messageCatalog,
-		template: template.Must(template.ParseFS(ui.Templates,
-			"templates/base.gohtml",
-			"templates/logout_successful.gohtml",
-		)),
-	}
+	return &LogoutSuccessHandler{logger: logger, trans: trans, templates: templateCache}
 }
--- a/internal/handlers/manage.go
+++ b/internal/handlers/manage.go
@ -0,0 +1,372 @@
+/*
+Copyright CAcert Inc.
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package handlers
+
+import (
+	"context"
+	"fmt"
+	"html/template"
+	"io"
+	"log/slog"
+	"net/http"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/gorilla/csrf"
+	"github.com/nicksnyder/go-i18n/v2/i18n"
+	client "github.com/ory/hydra-client-go/v2"
+
+	"code.cacert.org/cacert/oidc-idp/internal/services"
+)
+
+type IndexHandler struct {
+	logger    *slog.Logger
+	trans     *services.I18NService
+	templates TemplateCache
+}
+
+func (h *IndexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
+
+		return
+	}
+
+	localizer := getLocalizer(h.trans, r)
+
+	if r.URL.Path != "/" {
+		http.Error(w, h.trans.LookupHTTPErrorMessage(http.StatusNotFound, localizer), http.StatusNotFound)
+
+		return
+	}
+
+	h.templates.render(h.logger, w, Index, map[string]interface{}{
+		"Title": h.trans.LookupMessage("IndexTitle", nil, localizer),
+		"WelcomeMessage": template.HTML(h.trans.LookupMarkdownMessage( //nolint:gosec
+			"IndexWelcomeMessage",
+			map[string]interface{}{"ManageConsentHRef": "/manage-consent"},
+			localizer,
+		)),
+	})
+}
+
+func NewIndex(logger *slog.Logger, templateCache TemplateCache, trans *services.I18NService) *IndexHandler {
+	return &IndexHandler{logger: logger, trans: trans, templates: templateCache}
+}
+
+type ManageConsentHandler struct {
+	logger    *slog.Logger
+	trans     *services.I18NService
+	adminAPI  client.OAuth2API
+	templates TemplateCache
+}
+
+func (h *ManageConsentHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
+
+		return
+	}
+
+	localizer := getLocalizer(h.trans, r)
+
+	allSessions := make(ConsentSessions, 0)
+
+	var (
+		sessions []client.OAuth2ConsentSession
+		ok       bool
+	)
+
+	for _, s := range GetAuthenticatedAddresses(r) {
+		if sessions, ok = h.getConsentSessions(w, r, s); !ok {
+			return
+		}
+
+		for _, session := range sessions {
+			allSessions = append(allSessions, ConsentSession{Subject: s, Session: session})
+		}
+	}
+
+	sort.Sort(allSessions)
+
+	requestSession, err := GetSession(r)
+	if err != nil {
+		h.logger.Error("could not get session for request", "error", err)
+
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return
+	}
+
+	h.logger.Debug("got session for request", "new_session", requestSession.IsNew)
+
+	h.templates.render(h.logger, w, ManageConsent, map[string]interface{}{
+		"Title": h.trans.LookupMessage("ManageConsentTitle", nil, localizer),
+		"Description": template.HTML(h.trans.LookupMarkdownMessage( //nolint:gosec
+			"ManageConsentDescription",
+			nil,
+			localizer,
+		)),
+		"NoConsentGiven":    h.trans.LookupMessage("NoConsentGiven", nil, localizer),
+		"Flashes":           requestSession.Flashes("messages"),
+		"ConsentSessions":   allSessions,
+		"ButtonTitleRevoke": h.trans.LookupMessage("ButtonTitleRevoke", nil, localizer),
+		"ApplicationTitle":  h.trans.LookupMessage("ColumnNameApplication", nil, localizer),
+		"ActionsTitle":      h.trans.LookupMessage("ColumnNameActions", nil, localizer),
+		"SubjectTitle":      h.trans.LookupMessage("ColumnNameSubject", nil, localizer),
+		"GrantedTitle":      h.trans.LookupMessage("ColumnNameGranted", nil, localizer),
+		"ExpiresTitle":      h.trans.LookupMessage("ColumnNameExpires", nil, localizer),
+		"LabelUnknown":      h.trans.LookupMessage("LabelUnknown", nil, localizer),
+		"LabelNever":        h.trans.LookupMessage("LabelNever", nil, localizer),
+	})
+}
+
+type ConsentSession struct {
+	Subject string
+	Session client.OAuth2ConsentSession
+}
+
+func (s ConsentSession) GetClientName() string {
+	if !s.Session.HasConsentRequest() {
+		return ""
+	}
+
+	request := s.Session.GetConsentRequest()
+	if !request.HasClient() {
+		return ""
+	}
+
+	consentClient := request.GetClient()
+
+	return consentClient.GetClientName()
+}
+
+func (s ConsentSession) GetID() string {
+	if consent, ok := s.Session.GetConsentRequestOk(); ok {
+		if app, ok := consent.GetClientOk(); ok {
+			return app.GetClientId()
+		}
+	}
+
+	return ""
+}
+
+func (s ConsentSession) GrantedAt() *time.Time {
+	if grantedAt, ok := s.Session.GetHandledAtOk(); ok {
+		return grantedAt
+	}
+
+	return nil
+}
+
+func (s ConsentSession) Expires() *time.Time {
+	if expiresAt, ok := s.Session.GetExpiresAtOk(); ok {
+		if grantedAt := s.GrantedAt(); grantedAt != nil {
+			return expiresAt.AccessToken
+		}
+	}
+
+	return nil
+}
+
+type ConsentSessions []ConsentSession
+
+func (c ConsentSessions) Len() int {
+	return len(c)
+}
+
+func (c ConsentSessions) Less(i, j int) bool {
+	return c[i].Subject < c[j].Subject && c[i].GetClientName() < c[j].GetClientName()
+}
+
+func (c ConsentSessions) Swap(i, j int) {
+	c[i], c[j] = c[j], c[i]
+}
+
+func (h *ManageConsentHandler) getConsentSessions(
+	w http.ResponseWriter, r *http.Request, subject string,
+) ([]client.OAuth2ConsentSession, bool) {
+	sessions, response, err := h.adminAPI.ListOAuth2ConsentSessions(r.Context()).Subject(subject).Execute()
+	if err != nil {
+		h.logger.Error("error getting consent session list", "error", err)
+
+		// h.fillAcceptLoginRequestErrorBucket(r, err)
+		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+		return nil, false
+	}
+
+	defer func(response *http.Response) { _ = response.Body.Close() }(response)
+
+	h.logger.Debug(
+		"got response for AcceptOAuth2LoginRequest",
+		"response", response.Status, "consent_sessions", sessions,
+	)
+
+	if h.logger.Enabled(r.Context(), slog.LevelDebug) {
+		if rb, err := io.ReadAll(response.Body); err == nil {
+			h.logger.Debug("response body from Hydra", "response_body", rb)
+		}
+	}
+
+	return sessions, true
+}
+
+func NewManageConsent(
+	logger *slog.Logger, tc TemplateCache, trans *services.I18NService, adminAPI client.OAuth2API,
+) *ManageConsentHandler {
+	return &ManageConsentHandler{logger: logger, trans: trans, adminAPI: adminAPI, templates: tc}
+}
+
+type RevokeConsentHandler struct {
+	logger    *slog.Logger
+	trans     *services.I18NService
+	adminAPI  client.OAuth2API
+	templates TemplateCache
+}
+
+func (h *RevokeConsentHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	localizer := getLocalizer(h.trans, r)
+
+	if r.Method != http.MethodGet && r.Method != http.MethodPost {
+		http.Error(
+			w, h.trans.LookupHTTPErrorMessage(http.StatusMethodNotAllowed, localizer), http.StatusMethodNotAllowed,
+		)
+
+		return
+	}
+
+	clientID, _ := strings.CutPrefix(r.URL.Path, "/revoke-consent/")
+	subject := r.URL.Query().Get("subject")
+
+	if clientID == "" || subject == "" {
+		http.Error(w, h.trans.LookupHTTPErrorMessage(http.StatusNotFound, localizer), http.StatusNotFound)
+
+		return
+	}
+
+	if r.Method == http.MethodGet {
+		h.handleGet(w, r, clientID, localizer, subject)
+
+		return
+	}
+
+	h.handlePost(w, r, clientID, subject, localizer)
+}
+
+func (h *RevokeConsentHandler) handleGet(
+	w http.ResponseWriter, r *http.Request, clientID string, localizer *i18n.Localizer, subject string,
+) {
+	clientApp, found, err := h.getClient(r.Context(), clientID)
+	if err != nil {
+		h.logger.Error("could not get client", "error", err)
+
+		http.Error(
+			w, h.trans.LookupHTTPErrorMessage(http.StatusInternalServerError, localizer),
+			http.StatusInternalServerError,
+		)
+
+		return
+	}
+
+	if !found {
+		http.Error(w, h.trans.LookupHTTPErrorMessage(http.StatusNotFound, localizer), http.StatusNotFound)
+
+		return
+	}
+
+	h.templates.render(h.logger, w, ConfirmRevoke, map[string]interface{}{
+		"Title":             h.trans.LookupMessage("ConfirmRevokeTitle", nil, localizer),
+		"ButtonTitleRevoke": h.trans.LookupMessage("ButtonTitleConfirmRevoke", nil, localizer),
+		"ButtonTitleCancel": h.trans.LookupMessage("ButtonTitleCancel", nil, localizer),
+		"CancelLink":        "/manage-consent",
+		csrf.TemplateTag:    csrf.TemplateField(r),
+		"Explanation": template.HTML(h.trans.LookupMarkdownMessage( //nolint:gosec
+			"ConfirmRevokeExplanation", map[string]interface{}{
+				"ApplicationID": template.URLQueryEscaper(clientApp.GetClientId()),
+				"Application":   template.HTMLEscapeString(clientApp.GetClientName()),
+				"Subject":       subject,
+			}, localizer)),
+	})
+}
+
+func (h *RevokeConsentHandler) handlePost(
+	w http.ResponseWriter, r *http.Request, clientID string, subject string, localizer *i18n.Localizer,
+) {
+	err := h.revokeConsent(r.Context(), clientID, subject)
+	if err != nil {
+		h.logger.Error("could not revoke consent", "error", err)
+
+		http.Error(
+			w, h.trans.LookupHTTPErrorMessage(http.StatusInternalServerError, localizer),
+			http.StatusInternalServerError,
+		)
+
+		return
+	}
+
+	http.Redirect(w, r, "/manage-consent", http.StatusFound)
+}
+
+func (h *RevokeConsentHandler) getClient(ctx context.Context, clientID string) (*client.OAuth2Client, bool, error) {
+	clientApp, response, err := h.adminAPI.GetOAuth2Client(ctx, clientID).Execute()
+	if err != nil {
+		return nil, false, fmt.Errorf("error getting client application: %w", err)
+	}
+
+	defer func(response *http.Response) { _ = response.Body.Close() }(response)
+
+	h.logger.Debug(
+		"got response for GetOAuth2Client",
+		"response", response.Status, "client_app", clientApp,
+	)
+
+	if h.logger.Enabled(ctx, slog.LevelDebug) {
+		if rb, err := io.ReadAll(response.Body); err == nil {
+			h.logger.Debug("response body from Hydra", "response_body", rb)
+		}
+	}
+
+	return clientApp, true, nil
+}
+
+func (h *RevokeConsentHandler) revokeConsent(ctx context.Context, clientID, subject string) error {
+	response, err := h.adminAPI.RevokeOAuth2ConsentSessions(ctx).Client(clientID).Subject(subject).Execute()
+	if err != nil {
+		return fmt.Errorf("could not revoke consent: %w", err)
+	}
+
+	defer func(response *http.Response) { _ = response.Body.Close() }(response)
+
+	h.logger.Debug("got response for RevokeOAuth2ConsentSessions", "response", response.Status)
+
+	if h.logger.Enabled(ctx, slog.LevelDebug) {
+		if rb, err := io.ReadAll(response.Body); err == nil {
+			h.logger.Debug("response body from Hydra", "response_body", rb)
+		}
+	}
+
+	return nil
+}
+
+func NewRevokeConsent(
+	logger *slog.Logger, tc TemplateCache, trans *services.I18NService, adminAPI client.OAuth2API,
+) *RevokeConsentHandler {
+	return &RevokeConsentHandler{logger: logger, trans: trans, adminAPI: adminAPI, templates: tc}
+}
--- a/internal/handlers/observability.go
+++ b/internal/handlers/observability.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -20,10 +20,9 @@ package handlers
 import (
 	"context"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"sync/atomic"
-
-	log "github.com/sirupsen/logrus"
 )

 type key int
@ -54,7 +53,7 @@ func (sci *statusCodeInterceptor) Write(content []byte) (int, error) {
 	return count, nil
 }

-func Logging(logger *log.Logger) func(http.Handler) http.Handler {
+func Logging(logger *slog.Logger) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			interceptor := &statusCodeInterceptor{w, http.StatusOK, 0}
@ -63,7 +62,9 @@ func Logging(logger *log.Logger) func(http.Handler) http.Handler {
 				if !ok {
 					requestID = "unknown"
 				}
-				logger.Infof(
+
+				logger.Info(
+					fmt.Sprintf(
 						"[%s] %s \"%s %s\" %d %d \"%s\"",
 						requestID,
 						r.RemoteAddr,
@ -72,6 +73,7 @@ func Logging(logger *log.Logger) func(http.Handler) http.Handler {
 						interceptor.code,
 						interceptor.count,
 						r.UserAgent(),
+					),
 				)
 			}()
 			next.ServeHTTP(interceptor, r)
@ -86,7 +88,9 @@ func Tracing(nextRequestID func() string) func(http.Handler) http.Handler {
 			if requestID == "" {
 				requestID = nextRequestID()
 			}
+
 			ctx := context.WithValue(r.Context(), requestIDKey, requestID)
+
 			w.Header().Set("X-Request-Id", requestID)
 			next.ServeHTTP(w, r.WithContext(ctx))
 		})
@ -96,7 +100,7 @@ func Tracing(nextRequestID func() string) func(http.Handler) http.Handler {
 var Healthy int32

 func NewHealthHandler() http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	return http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		if atomic.LoadInt32(&Healthy) == 1 {
 			w.WriteHeader(http.StatusNoContent)

--- a/internal/handlers/security.go
+++ b/internal/handlers/security.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -18,7 +18,9 @@ limitations under the License.
 package handlers

 import (
+	"crypto/x509"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"time"
 )
@ -27,8 +29,37 @@ func EnableHSTS() func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			const Days180 = 180
+
 			w.Header().Set("Strict-Transport-Security", fmt.Sprintf("max-age=%d", int((time.Hour*24*Days180).Seconds())))
 			next.ServeHTTP(w, r)
 		})
 	}
 }
+
+func getDataFromClientCert(logger *slog.Logger, r *http.Request) (string, []string) {
+	if r.TLS != nil && r.TLS.PeerCertificates != nil && len(r.TLS.PeerCertificates) > 0 {
+		firstCert := r.TLS.PeerCertificates[0]
+
+		if !isClientCertificate(firstCert) {
+			return "", nil
+		}
+
+		for _, email := range firstCert.EmailAddresses {
+			logger.Info("authenticated with a client certificate for email address", "email", email)
+		}
+
+		return firstCert.Subject.CommonName, firstCert.EmailAddresses
+	}
+
+	return "", nil
+}
+
+func isClientCertificate(cert *x509.Certificate) bool {
+	for _, ext := range cert.ExtKeyUsage {
+		if ext == x509.ExtKeyUsageClientAuth {
+			return true
+		}
+	}
+
+	return false
+}
--- a/internal/models/oidc.go
+++ b/internal/models/oidc.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
--- a/internal/services/configuration.go
+++ b/internal/services/configuration.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -19,6 +19,7 @@ package services

 import (
 	"fmt"
+	"log/slog"
 	"os"
 	"strings"

@ -28,7 +29,6 @@ import (
 	"github.com/knadh/koanf/providers/env"
 	"github.com/knadh/koanf/providers/file"
 	"github.com/knadh/koanf/providers/posflag"
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/pflag"
 )

@ -51,7 +51,7 @@ var DefaultConfig = map[string]interface{}{
 }

 func ConfigureApplication(
-	logger *logrus.Logger,
+	logger *slog.Logger,
 	appName string,
 	defaultConfig map[string]interface{},
 ) (*koanf.Koanf, error) {
@ -70,7 +70,7 @@ func ConfigureApplication(
 	var err error

 	if err = f.Parse(os.Args[1:]); err != nil {
-		logger.WithError(err).Fatal("could not parse command line arguments")
+		return nil, fmt.Errorf("could not parse command line arguments: %w", err)
 	}

 	config := koanf.New(".")
@ -78,18 +78,22 @@ func ConfigureApplication(
 	_ = config.Load(confmap.Provider(defaultConfig, "."), nil)

 	if err = config.Load(file.Provider(defaultFile), toml.Parser()); err != nil && !os.IsNotExist(err) {
-		logrus.WithError(err).WithField("file", defaultFile).Fatal("error loading configuration from file")
+		logger.Error("could not load configuration from file", "file", defaultFile)
+
+		return nil, fmt.Errorf("error loading configuration: %w", err)
 	}

 	cFiles, _ := f.GetStringSlice("conf")
 	for _, c := range cFiles {
 		if err = config.Load(file.Provider(c), toml.Parser()); err != nil {
-			logger.WithError(err).WithField("file", c).Fatal("error loading configuration from file")
+			logger.Error("could not load configuration from file", "file", c)
+
+			return nil, fmt.Errorf("error loading configuration: %w", err)
 		}
 	}

 	if err = config.Load(posflag.Provider(f, ".", config), nil); err != nil {
-		logger.WithError(err).Fatal("error loading configuration from command line")
+		return nil, fmt.Errorf("error loading configuration from command line: %w", err)
 	}

 	prefix := fmt.Sprintf("%s_", strings.ToUpper(appName))
@ -97,7 +101,7 @@ func ConfigureApplication(
 	if err = config.Load(env.Provider(prefix, ".", func(s string) string {
 		return strings.ReplaceAll(strings.ToLower(strings.TrimPrefix(s, prefix)), "_", ".")
 	}), nil); err != nil {
-		logrus.WithError(err).Fatal("error loading configuration from environment")
+		return nil, fmt.Errorf("error loading configuration from environment: %w", err)
 	}

 	return config, nil
--- a/internal/services/i18n.go
+++ b/internal/services/i18n.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -21,8 +21,9 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"log/slog"
+	"net/http"

-	log "github.com/sirupsen/logrus"
 	"github.com/yuin/goldmark"

 	"code.cacert.org/cacert/oidc-idp/translations"
@ -32,8 +33,136 @@ import (
 	"golang.org/x/text/language"
 )

-func AddMessages(catalog *MessageCatalog) error {
+type MessageCatalog struct {
+	messages map[string]*i18n.Message
+	logger   *slog.Logger
+}
+
+func (m *MessageCatalog) AddMessages(messages map[string]*i18n.Message) {
+	for key, value := range messages {
+		m.messages[key] = value
+	}
+}
+
+func (s *I18NService) LookupMessage(
+	id string,
+	templateData map[string]interface{},
+	localizer *i18n.Localizer,
+) string {
+	if message, ok := s.catalog.messages[id]; ok {
+		translation, err := localizer.Localize(&i18n.LocalizeConfig{
+			DefaultMessage: message,
+			TemplateData:   templateData,
+		})
+		if err != nil {
+			return s.catalog.handleLocalizeError(id, translation, err)
+		}
+
+		return translation
+	}
+
+	s.logger.Warn("no translation found for id", "id", id)
+
+	return id
+}
+
+func (s *I18NService) LookupHTTPErrorMessage(httpStatusCode int, localizer *i18n.Localizer) string {
+	id := fmt.Sprintf("http%d", httpStatusCode)
+	translation := s.LookupMessage(id, nil, localizer)
+
+	if translation != id {
+		return translation
+	}
+
+	return http.StatusText(httpStatusCode)
+}
+
+func (s *I18NService) LookupMarkdownMessage(
+	id string,
+	templateData map[string]interface{},
+	localizer *i18n.Localizer,
+) string {
+	if message, ok := s.catalog.messages[id]; ok {
+		translation, err := localizer.Localize(&i18n.LocalizeConfig{
+			DefaultMessage: message,
+			TemplateData:   templateData,
+		})
+		if err != nil {
+			s.logger.Warn("message localization failed", "error", err, "message", message)
+		}
+
+		if translation == "" {
+			return id
+		}
+
+		buf := &bytes.Buffer{}
+
+		err = goldmark.Convert([]byte(translation), buf)
+		if err != nil {
+			return s.catalog.handleLocalizeError(id, translation, fmt.Errorf("markdown conversion error: %w", err))
+		}
+
+		return buf.String()
+	}
+
+	s.logger.Warn("no translation found for id", "id", id)
+
+	return id
+}
+
+func (s *I18NService) LookupMessagePlural(
+	id string,
+	templateData map[string]interface{},
+	localizer *i18n.Localizer,
+	count int,
+) string {
+	if message, ok := s.catalog.messages[id]; ok {
+		translation, err := localizer.Localize(&i18n.LocalizeConfig{
+			DefaultMessage: message,
+			TemplateData:   templateData,
+			PluralCount:    count,
+		})
+		if err != nil {
+			return s.catalog.handleLocalizeError(id, translation, err)
+		}
+
+		return translation
+	}
+
+	s.logger.Warn("no translation found for id", "id", id)
+
+	return id
+}
+
+func (m *MessageCatalog) handleLocalizeError(id string, translation string, err error) string {
+	var messageNotFound *i18n.MessageNotFoundErr
+
+	if errors.As(err, &messageNotFound) {
+		m.logger.Warn("message not found", "error", err, "message", id)
+
+		if translation != "" {
+			return translation
+		}
+	} else {
+		m.logger.Error("translation error", "error", err, "message", id)
+	}
+
+	return id
+}
+
+type I18NService struct {
+	logger  *slog.Logger
+	bundle  *i18n.Bundle
+	catalog *MessageCatalog
+}
+
+func (s *I18NService) AddMessages() error {
 	messages := make(map[string]*i18n.Message)
+	messages["http404"] = &i18n.Message{
+		ID:          "http404",
+		Description: "HTTP error 404 not found",
+		Other:       "Not found",
+	}
 	messages["unknown"] = &i18n.Message{
 		ID:    "ErrorUnknown",
 		Other: "Unknown error",
@ -47,6 +176,65 @@ func AddMessages(catalog *MessageCatalog) error {
 		Other: "A request that your browser sent to the authorization server caused an error." +
 			" The authorization server returned details about the error that are printed below.",
 	}
+	messages["ButtonTitleCancel"] = &i18n.Message{
+		ID:          "ButtonTitleCancel",
+		Description: "Title for a button to cancel an action",
+		Other:       "Cancel",
+	}
+	messages["ButtonTitleConsent"] = &i18n.Message{
+		ID:          "ButtonTitleConsent",
+		Description: "Title for a button to give consent",
+		Other:       "Consent",
+	}
+	messages["ButtonTitleDeny"] = &i18n.Message{
+		ID:          "ButtonTitleDeny",
+		Description: "Title for a button to deny consent",
+		Other:       "Deny",
+	}
+	messages["ButtonTitleRevoke"] = &i18n.Message{
+		ID:          "ButtonTitleRevoke",
+		Description: "Title for a button to revoke consent",
+		Other:       "Revoke",
+	}
+	messages["ButtonTitleConfirmRevoke"] = &i18n.Message{
+		ID:          "ButtonTitleConfirmRevoke",
+		Description: "Title for a button to confirm consent revocation",
+		Other:       "Yes, Revoke!",
+	}
+	messages["ColumnNameApplication"] = &i18n.Message{
+		ID:          "ColumnNameApplication",
+		Description: "Title for a table column showing application names",
+		Other:       "Application",
+	}
+	messages["ColumnNameActions"] = &i18n.Message{
+		ID:          "ColumnNameActions",
+		Description: "Title for a table column showing available actions",
+		Other:       "Actions",
+	}
+	messages["ColumnNameExpires"] = &i18n.Message{
+		ID:          "ColumnNameExpires",
+		Description: "Title for a table column showing the expiry date for a consent",
+		Other:       "Expires",
+	}
+	messages["ColumnNameGranted"] = &i18n.Message{
+		ID:          "ColumnNameGranted",
+		Description: "Title for a table column showing the time when consent has been granted",
+		Other:       "Granted at",
+	}
+	messages["ColumnNameSubject"] = &i18n.Message{
+		ID:          "ColumnNameSubject",
+		Description: "Title for a table column showing the subject of a consent",
+		Other:       "Subject",
+	}
+	messages["ConfirmRevokeTitle"] = &i18n.Message{
+		ID:    "ConfirmRevokeTitle",
+		Other: "Revoke consent",
+	}
+	messages["ConfirmRevokeExplanation"] = &i18n.Message{
+		ID: "ConfirmRevokeExplanation",
+		Other: "Do you want to revoke your consent to allow **{{ .Application }}**" +
+			" access to identity data for **{{ .Subject }}**?",
+	}
 	messages["TitleRequestConsent"] = &i18n.Message{
 		ID:    "TitleRequestConsent",
 		Other: "Application requests your consent",
@ -59,15 +247,21 @@ func AddMessages(catalog *MessageCatalog) error {
 		ID:    "LabelConsent",
 		Other: "I hereby agree that the application may get the requested permissions.",
 	}
+	messages["LabelNever"] = &i18n.Message{
+		ID:    "LabelNever",
+		Other: "Never",
+	}
+	messages["LabelUnknown"] = &i18n.Message{
+		ID:    "LabelUnknown",
+		Other: "Unknown",
+	}
 	messages["IntroConsentRequested"] = &i18n.Message{
 		ID:    "IntroConsentRequested",
-		Other: "The <strong>{{ .client }}</strong> application requested your consent for the following set of " +
-			"permissions:",
+		Other: "The **{{ .client }}** application requested your consent for the following set of permissions:",
 	}
 	messages["IntroConsentMoreInformation"] = &i18n.Message{
 		ID:    "IntroConsentMoreInformation",
-		Other: "You can find more information about <strong>{{ .client }}</strong> at " +
-			"<a href=\"{{ .clientLink }}\">its description page</a>.",
+		Other: "You can find more information about **{{ .client }}** at [its description page]({{ .clientLink }}).",
 	}
 	messages["ClaimsInformation"] = &i18n.Message{
 		ID:    "ClaimsInformation",
@ -79,7 +273,7 @@ func AddMessages(catalog *MessageCatalog) error {
 	}
 	messages["CertLoginIntroText"] = &i18n.Message{
 		ID:    "CertLoginIntroText",
-		Other: "The application <strong>{{ .ClientName }}</strong> requests a login.",
+		Other: "The application **{{ .ClientName }}** requests a login.",
 	}
 	messages["EmailChoiceText"] = &i18n.Message{
 		ID:  "EmailChoiceText",
@ -87,6 +281,15 @@ func AddMessages(catalog *MessageCatalog) error {
 		Other: "You have presented a valid client certificate for multiple email addresses. " +
 			"Please choose which one you want to present to the application:",
 	}
+	messages["IndexTitle"] = &i18n.Message{
+		ID:    "IndexTitle",
+		Other: "Welcome to your identity provider",
+	}
+	messages["IndexWelcomeMessage"] = &i18n.Message{
+		ID: "IndexWelcomeMessage",
+		Other: "Go to [manage consent]({{ .ManageConsentHRef }}) to show or revoke consent" +
+			" you have given to client applications.",
+	}
 	messages["LoginTitle"] = &i18n.Message{
 		ID:    "LoginTitle",
 		Other: "Authenticate with a client certificate",
@ -109,6 +312,10 @@ func AddMessages(catalog *MessageCatalog) error {
 		ID:    "LoginDeniedByUser",
 		Other: "Login has been denied by the user.",
 	}
+	messages["LoginDeniedSubjectMissing"] = &i18n.Message{
+		ID:    "LoginDeniedSubjectMissing",
+		Other: "Login has been denied because the requested subject {{ .Subject }} could not be authenticated.",
+	}
 	messages["LogoutSuccessfulTitle"] = &i18n.Message{
 		ID:    "LogoutSuccessfulTitle",
 		Other: "Logout successful",
@ -117,10 +324,30 @@ func AddMessages(catalog *MessageCatalog) error {
 		ID:    "LogoutSuccessfulText",
 		Other: "You have been logged out successfully.",
 	}
+	messages["ManageConsentTitle"] = &i18n.Message{
+		ID:    "ManageConsentTitle",
+		Other: "Manage consent",
+	}
+	messages["ManageConsentDescription"] = &i18n.Message{
+		ID:    "ManageConsentDescription",
+		Other: "This page allows you to see consent that you have given to client applications in the past.",
+	}
 	messages["HintChooseAnIdentityForAuthentication"] = &i18n.Message{
 		ID:    "HintChooseAnIdentityForAuthentication",
 		Other: "Choose an identity for authentication.",
 	}
+	messages["HintChooseDifferentClientCertificate"] = &i18n.Message{
+		ID:    "HintChooseDifferentClientCertificate",
+		Other: "Choose a different client certificate for authentication.",
+	}
+	messages["NoConsentGiven"] = &i18n.Message{
+		ID:    "NoConsentGiven",
+		Other: "You have not given consent to use your data to any application yet.",
+	}
+	messages["NoEmailAddressSelected"] = &i18n.Message{
+		ID:    "NoEmailAddressSelected",
+		Other: "You did not select an email address. Please select an email address to continue.",
+	}
 	messages["NoEmailsInClientCertificateTitle"] = &i18n.Message{
 		ID:    "NoEmailsInClientCertificateTitle",
 		Other: "No email addresses in client certificate",
@ -141,154 +368,16 @@ An email address is required to authenticate yourself.`,
 			" [the ORY Hydra documentation](https://www.ory.sh/docs/oauth2-oidc/custom-login-consent/flow).",
 	}

-	catalog.AddMessages(messages)
+	s.catalog.AddMessages(messages)

 	return nil
 }

-type MessageCatalog struct {
-	messages map[string]*i18n.Message
-	logger   *log.Logger
+func (s *I18NService) Localizer(languages string) *i18n.Localizer {
+	return i18n.NewLocalizer(s.bundle, languages)
 }

-func (m *MessageCatalog) AddMessages(messages map[string]*i18n.Message) {
-	for key, value := range messages {
-		m.messages[key] = value
-	}
-}
-
-func (m *MessageCatalog) LookupErrorMessage(
-	tag string,
-	field string,
-	value interface{},
-	localizer *i18n.Localizer,
-) string {
-	fieldTag := fmt.Sprintf("%s-%s", field, tag)
-
-	message, ok := m.messages[fieldTag]
-	if !ok {
-		m.logger.WithField("field_tag", fieldTag).Info("no specific error message for field and tag")
-
-		message, ok = m.messages[tag]
-		if !ok {
-			m.logger.WithField("tag", tag).Info("no specific error message for tag")
-
-			message, ok = m.messages["unknown"]
-			if !ok {
-				m.logger.Warn("no default translation found")
-
-				return tag
-			}
-		}
-	}
-
-	translation, err := localizer.Localize(&i18n.LocalizeConfig{
-		DefaultMessage: message,
-		TemplateData: map[string]interface{}{
-			"Value": value,
-		},
-	})
-	if err != nil {
-		m.logger.WithError(err).Error("localization failed")
-
-		return tag
-	}
-
-	return translation
-}
-
-func (m *MessageCatalog) LookupMessage(
-	id string,
-	templateData map[string]interface{},
-	localizer *i18n.Localizer,
-) string {
-	if message, ok := m.messages[id]; ok {
-		translation, err := localizer.Localize(&i18n.LocalizeConfig{
-			DefaultMessage: message,
-			TemplateData:   templateData,
-		})
-		if err != nil {
-			return m.handleLocalizeError(id, translation, err)
-		}
-
-		return translation
-	}
-
-	m.logger.WithField("id", id).Warn("no translation found for id")
-
-	return id
-}
-
-func (m *MessageCatalog) LookupMarkdownMessage(
-	id string,
-	templateData map[string]interface{},
-	localizer *i18n.Localizer,
-) string {
-	if message, ok := m.messages[id]; ok {
-		translation, err := localizer.Localize(&i18n.LocalizeConfig{
-			DefaultMessage: message,
-			TemplateData:   templateData,
-		})
-		if err != nil {
-			return m.handleLocalizeError(id, translation, err)
-		}
-
-		buf := &bytes.Buffer{}
-
-		err = goldmark.Convert([]byte(translation), buf)
-		if err != nil {
-			return m.handleLocalizeError(id, translation, fmt.Errorf("markdown conversion error: %w", err))
-		}
-
-		return buf.String()
-	}
-
-	m.logger.WithField("id", id).Warn("no translation found for id")
-
-	return id
-}
-
-func (m *MessageCatalog) LookupMessagePlural(
-	id string,
-	templateData map[string]interface{},
-	localizer *i18n.Localizer,
-	count int,
-) string {
-	if message, ok := m.messages[id]; ok {
-		translation, err := localizer.Localize(&i18n.LocalizeConfig{
-			DefaultMessage: message,
-			TemplateData:   templateData,
-			PluralCount:    count,
-		})
-		if err != nil {
-			return m.handleLocalizeError(id, translation, err)
-		}
-
-		return translation
-	}
-
-	m.logger.WithField("id", id).Warn("no translation found for id")
-
-	return id
-}
-
-func (m *MessageCatalog) handleLocalizeError(id string, translation string, err error) string {
-	var messageNotFound *i18n.MessageNotFoundErr
-
-	if errors.As(err, &messageNotFound) {
-		m.logger.WithError(err).WithField("message", id).Warn("message not found")
-
-		if translation != "" {
-			return translation
-		}
-	} else {
-		m.logger.WithError(err).WithField("message", id).Error("translation error")
-	}
-
-	return id
-}
-
-func InitI18n(logger *log.Logger, languages []string) (*i18n.Bundle, *MessageCatalog) {
+func InitI18n(logger *slog.Logger, languages []string) *I18NService {
 	bundle := i18n.NewBundle(language.English)
 	bundle.RegisterUnmarshalFunc("toml", toml.Unmarshal)

@ -297,7 +386,7 @@ func InitI18n(logger *log.Logger, languages []string) (*i18n.Bundle, *MessageCat

 		bundleBytes, err := translations.Bundles.ReadFile(bundleName)
 		if err != nil {
-			logger.WithField("bundle", bundleName).Warn("message bundle not found")
+			logger.Warn("message bundle not found", "bundle", bundleName)

 			continue
 		}
@ -307,10 +396,10 @@ func InitI18n(logger *log.Logger, languages []string) (*i18n.Bundle, *MessageCat

 	catalog := initMessageCatalog(logger)

-	return bundle, catalog
+	return &I18NService{logger: logger, bundle: bundle, catalog: catalog}
 }

-func initMessageCatalog(logger *log.Logger) *MessageCatalog {
+func initMessageCatalog(logger *slog.Logger) *MessageCatalog {
 	messages := make(map[string]*i18n.Message)
 	messages["ErrorTitle"] = &i18n.Message{
 		ID:    "ErrorTitle",
--- a/internal/services/security.go
+++ b/internal/services/security.go
@ -0,0 +1,43 @@
+/*
+Copyright CAcert Inc.
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package services
+
+import (
+	"crypto/rand"
+	"errors"
+	"log/slog"
+)
+
+var errCouldNotGenerateKey = errors.New("could not generate key")
+
+func GenerateKey(length int) ([]byte, error) {
+	key := make([]byte, length)
+
+	read, err := rand.Read(key)
+	if err != nil {
+		return nil, errCouldNotGenerateKey
+	}
+
+	if read != length {
+		slog.Error("read unexpected number of bytes", "read", read, "expected", length)
+
+		return nil, errCouldNotGenerateKey
+	}
+
+	return key, nil
+}
--- a/internal/services/session.go
+++ b/internal/services/session.go
@ -0,0 +1,37 @@
+/*
+Copyright CAcert Inc.
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package services
+
+import (
+	"github.com/gorilla/sessions"
+)
+
+var store *sessions.CookieStore
+
+const (
+	SessionFullName = iota
+	SessionEmail
+)
+
+func InitSessionStore(keys ...[]byte) {
+	store = sessions.NewCookieStore(keys...)
+}
+
+func GetSessionStore() *sessions.CookieStore {
+	return store
+}
--- a/translations/active.de.toml
+++ b/translations/active.de.toml
@ -6,9 +6,34 @@ other = "Eine Anfrage, die dein Browser an den Authorization-Server geschickt ha
 hash = "sha1-fa3294b49220d6de6f68825d03195e3f33e88378"
 other = "Fehlermeldung vom Authorization-Server"

+[ButtonTitleCancel]
+description = "Title for a button to cancel an action"
+hash = "sha1-0ea9f9f23f1883bb6642b7ec2f083036497dd56b"
+other = "Abbrechen"
+
+[ButtonTitleConfirmRevoke]
+description = "Title for a button to confirm consent revocation"
+hash = "sha1-bb25839982a1fe044fc2ac39552903c65402ad48"
+other = "Ja, Widerrufen!"
+
+[ButtonTitleConsent]
+description = "Title for a button to give consent"
+hash = "sha1-7f5c5d105e7a9600c7a8d3d092c7e812cf344e95"
+other = "Zustimmen"
+
+[ButtonTitleDeny]
+description = "Title for a button to deny consent"
+hash = "sha1-d5245e4b19ed6f0af002aee7ab488b8f822d53c7"
+other = "Ablehnen"
+
+[ButtonTitleRevoke]
+description = "Title for a button to revoke consent"
+hash = "sha1-b4524373ff63f37e062bd5f496e8ba04ee5c678d"
+other = "Widerrufen"
+
 [CertLoginIntroText]
-hash = "sha1-e9f7c0522e49ffacc49e3fc35c6ffd31e495baf6"
-other = "Die Anwendung <strong>{{ .ClientName }}</strong> fragt nach einer Anmeldung."
+hash = "sha1-02871569c8d36e522cdb0716081ef62b7c7a71ec"
+other = "Die Anwendung **{{ .ClientName }}** fragt nach einer Anmeldung."

 [CertLoginRequestText]
 hash = "sha1-1b20eea0f6fbb4ff139ecfe6b7a93c98cb14b8d7"
@ -18,10 +43,43 @@ other = "Willst du die ausgewählte Identität für die Anmeldung verwenden?"
 hash = "sha1-4a6721995b5d87c02be77695910af642ca30b18a"
 other = "Zusätzlich möchte die Anwendung Zugriff auf folgende Informationen:"

+[ColumnNameActions]
+description = "Title for a table column showing available actions"
+hash = "sha1-b1b5e5530afa75d2f7c088486018266a1fbc3456"
+other = "Aktionen"
+
+[ColumnNameApplication]
+description = "Title for a table column showing application names"
+hash = "sha1-28a9f11a0be09f7d8df6e324f3222e105965d315"
+other = "Applikation"
+
+[ColumnNameExpires]
+description = "Title for a table column showing the expiry date for a consent"
+hash = "sha1-6c61015982d7748e6549cf56ee372a8bc130e83a"
+other = "Läuft ab"
+
+[ColumnNameGranted]
+description = "Title for a table column showing the time when consent has been granted"
+hash = "sha1-4ace00a57b59cf745b97f1434d5605ec75722909"
+other = "Zugestimmt"
+
+[ColumnNameSubject]
+description = "Title for a table column showing the subject of a consent"
+hash = "sha1-048ba3497a13fa58c474cf5a400240584b0ee5d5"
+other = "Subjekt"
+
+[ConfirmRevokeExplanation]
+hash = "sha1-664fae4095fce4ff49ea3eed60293eaea99004a0"
+other = "Willst du die Freigabe für den Zugriff auf deine Identitätsdaten für **{{ .Subject }}** für **{{ .Application }}** widerrufen?"
+
+[ConfirmRevokeTitle]
+hash = "sha1-13255b407052cfd4a359f6e8e175137b48388a31"
+other = "Freigabe widerrufen"
+
 [EmailChoiceText]
 hash = "sha1-8bba8cd3a8724d8c5b75da9b7d2ac084b6e9df90"
 one = "Du hast ein gültiges Client-Zertifikat für die folgende E-Mail-Adresse vorgelegt:"
-other = "Du hast ein gültiges Client-Zertifikate für mehrere E-Mail-Adressen vorgelegt. Bitte wähle aus, welches Du der Anwendung vorlegen möchtest:"
+other = "Du hast ein gültiges Client-Zertifikate für mehrere E-Mail-Adressen vorgelegt. Bitte wähle aus, welche davon Du der Anwendung zeigen möchtest:"

 [ErrorTitle]
 hash = "sha1-736aec25a98f5ec5b71400bb0163f891f509b566"
@ -35,13 +93,25 @@ other = "Unbekannter Fehler"
 hash = "sha1-7ee5b067009bbedc061274ee50a3027b50a06163"
 other = "Wähle eine Identität für die Anmeldung."

+[HintChooseDifferentClientCertificate]
+hash = "sha1-22002121759ae58afccfccb88383dbe54f94f0a9"
+other = "Wähle ein anderes Client-Zertifikat für die Anmeldung."
+
+[IndexTitle]
+hash = "sha1-c763022b69a8ad58ab42d8ea708192abd85fd8f6"
+other = "Willkommen bei deinem Identitätsprovider"
+
+[IndexWelcomeMessage]
+hash = "sha1-00632c6562df53c62861c33e468e729887816419"
+other = "Besuche [die Freigabeverwaltung]({{ .ManageConsentHRef }}), um deine Freigaben für Applikationen einzusehen oder zu widerrufen."
+
 [IntroConsentMoreInformation]
-hash = "sha1-f58b8378238bd433deef3c3e6b0b70d0fd0dd59e"
-other = "Auf der <a href=\"{{ .clientLink }}\">Beschreibungsseite</a> findest du mehr Informationen zu <strong>{{ .client }}</strong>."
+hash = "sha1-836b2931b417e98db4102731604443ee2700123c"
+other = "Auf der [Beschreibungsseite]({{ .clientLink }}) findest du mehr Informationen zu **{{ .client }}**."

 [IntroConsentRequested]
-hash = "sha1-3ac6a3583d40b5e8930c57531f0be9706f1e0194"
-other = "Die Anwendung <strong>{{ .client }}</strong> hat deine Zustimmung für die Erteilung der folgenden Berechtigungen angefragt:"
+hash = "sha1-db5e67a16c181c4d27baf5d0e3bf255224b0fffc"
+other = "Die Anwendung **{{ .client }}** hat deine Zustimmung für die Erteilung der folgenden Berechtigungen angefragt:"

 [LabelAcceptCertLogin]
 description = "Label for a button to accept certificate login"
@ -52,6 +122,10 @@ other = "Ja, bitte"
 hash = "sha1-5e56a367cf99015bbe98488845541db00b7e04f6"
 other = "Ich erteile hiermit meine Einwilligung, dass die Anwendung die angefragten Berechtigungen erhalten darf."

+[LabelNever]
+hash = "sha1-80c3052d33ccdee15ffaaa110c5c39072495fe63"
+other = "Nie"
+
 [LabelRejectCertLogin]
 description = "Label for a button to reject certificate login"
 hash = "sha1-49c4d0d1da1c0a7d7e9bf491b28a6e6825f4c2cd"
@ -61,10 +135,18 @@ other = "Nein, schick mich zurück"
 hash = "sha1-2dacf65959849884a011f36f76a04eebea94c5ea"
 other = "Abschicken"

+[LabelUnknown]
+hash = "sha1-bc7819b34ff87570745fbe461e36a16f80e562ce"
+other = "Unbekannt"
+
 [LoginDeniedByUser]
 hash = "sha1-bbad650536bfb091ad55d576262bbe4358277c73"
 other = "Die Anmeldung wurde durch den Nutzer abgelehnt."

+[LoginDeniedSubjectMissing]
+hash = "sha1-c787e750515612fd695d6a6beeb3a07ec381f3e7"
+other = "Die Anmeldung wurde abgelehnt, weil die angeforderte Identität {{ .Subject }} nicht bestätigt werden konnte."
+
 [LoginTitle]
 hash = "sha1-9a24c8b64e047edc13f3c41ef7785bb2044a6d69"
 other = "Anmelden mit einem Client-Zertifikat"
@ -77,6 +159,14 @@ other = "Du wurdest erfolreich abgemeldet."
 hash = "sha1-c92ba3b5f47d0b37b43ba499793a09baa94e5b9d"
 other = "Abmeldung erfolgreich"

+[ManageConsentDescription]
+hash = "sha1-c0f25f17d557ce029f826322a3b625905966e0ea"
+other = "Diese Seite zeigt dir die Freigaben für Client-Applikationen, die du in der Vergangenheit erteilt hast und ermöglicht dir, diese zu widerrufen."
+
+[ManageConsentTitle]
+hash = "sha1-1c63dd057bea5bfc86befa82e041ab08122f2e52"
+other = "Freigaben verwalten"
+
 [NoChallengeInRequestExplanation]
 hash = "sha1-b26a3ef99ecadfbceb62b62eb52e34d197c56c02"
 other = "In Deinem Anmelde-Request fehlt der notwendige `login_challenge`-Parameter. Mehr Informationen zu diesem Parameter findest du in [der ORY Hydra-Dokumentation](https://www.ory.sh/docs/oauth2-oidc/custom-login-consent/flow)."
@ -85,6 +175,14 @@ other = "In Deinem Anmelde-Request fehlt der notwendige `login_challenge`-Parame
 hash = "sha1-b039c647fea0e42bcb0c877c58da499d082f5319"
 other = "Kein Challenge-Parameter im Anmelde-Request"

+[NoConsentGiven]
+hash = "sha1-6843ba66b1103d3eed6403f7e276301b852e7ac0"
+other = "Du hast noch keiner Applikation eine Freigabe erteilt."
+
+[NoEmailAddressSelected]
+hash = "sha1-09fdefe67eae9915e32b18c50baf985d5bd27d36"
+other = "Du hast keine E-Mail-Adresse ausgewählt. Bitte wähle eine E-Mail-Adresse, um die Anmeldung fortzusetzen."
+
 [NoEmailsInClientCertificateExplanation]
 hash = "sha1-ab76bd1bed709ebb19a1b9e48c611271551f3343"
 other = "Das genutzte Client-Zertifikate enthielt keine E-Mail-Adressen.\nEine E-Mail-Adresse ist erforderlich, um dich anzumelden."
@ -116,3 +214,8 @@ other = "Anwendung erbittet deine Zustimmung"
 [WrongOrLockedUserOrInvalidPassword]
 hash = "sha1-87e0a0ac67c6c3a06bed184e10b22aae4d075b64"
 other = "Du hast einen ungültigen Nutzernamen oder ein ungültiges Passwort eingegeben oder dein Benutzerkonto wurde gesperrt."
+
+[http404]
+description = "HTTP error 404 not found"
+hash = "sha1-8d7e56f17b2686bc10641795b8785c03b77581cf"
+other = "Nicht gefunden"
--- a/translations/active.en.toml
+++ b/translations/active.en.toml
@ -1,21 +1,33 @@
 AuthServerErrorExplanation = "A request that your browser sent to the authorization server caused an error. The authorization server returned details about the error that are printed below."
 AuthServerErrorTitle = "Authorization server returned an error"
-CertLoginIntroText = "The application <strong>{{ .ClientName }}</strong> requests a login."
+CertLoginIntroText = "The application **{{ .ClientName }}** requests a login."
 CertLoginRequestText = "Do you want to use the chosen identity from the certificate for authentication?"
 ClaimsInformation = "In addition the application wants access to the following information:"
+ConfirmRevokeExplanation = "Do you want to revoke your consent to allow **{{ .Application }}** access to identity data for **{{ .Subject }}**?"
+ConfirmRevokeTitle = "Revoke consent"
 ErrorTitle = "An error has occurred"
 ErrorUnknown = "Unknown error"
 HintChooseAnIdentityForAuthentication = "Choose an identity for authentication."
-IntroConsentMoreInformation = "You can find more information about <strong>{{ .client }}</strong> at <a href=\"{{ .clientLink }}\">its description page</a>."
-IntroConsentRequested = "The <strong>{{ .client }}</strong> application requested your consent for the following set of permissions:"
+HintChooseDifferentClientCertificate = "Choose a different client certificate for authentication."
+IndexTitle = "Welcome to your identity provider"
+IndexWelcomeMessage = "Go to [manage consent]({{ .ManageConsentHRef }}) to show or revoke consent you have given to client applications."
+IntroConsentMoreInformation = "You can find more information about **{{ .client }}** at [its description page]({{ .clientLink }})."
+IntroConsentRequested = "The **{{ .client }}** application requested your consent for the following set of permissions:"
 LabelConsent = "I hereby agree that the application may get the requested permissions."
+LabelNever = "Never"
 LabelSubmit = "Submit"
+LabelUnknown = "Unknown"
 LoginDeniedByUser = "Login has been denied by the user."
+LoginDeniedSubjectMissing = "Login has been denied because the requested subject {{ .Subject }} could not be authenticated."
 LoginTitle = "Authenticate with a client certificate"
 LogoutSuccessfulText = "You have been logged out successfully."
 LogoutSuccessfulTitle = "Logout successful"
+ManageConsentDescription = "This page allows you to see consent that you have given to client applications in the past."
+ManageConsentTitle = "Manage consent"
 NoChallengeInRequestExplanation = "Your authentication request did not contain the necessary `login_challenge` parameter. You can find more information about this parameter in [the ORY Hydra documentation](https://www.ory.sh/docs/oauth2-oidc/custom-login-consent/flow)."
 NoChallengeInRequestTitle = "No challenge parameter in your authentication request"
+NoConsentGiven = "You have not given consent to use your data to any application yet."
+NoEmailAddressSelected = "You did not select an email address. Please select an email address to continue."
 NoEmailsInClientCertificateExplanation = "The presented client certificate does not contain any email address value.\nAn email address is required to authenticate yourself."
 NoEmailsInClientCertificateTitle = "No email addresses in client certificate"
 Scope-email-Description = "Access your email address."
@ -25,6 +37,46 @@ Scope-profile-Description = "Access your user profile information (your name)."
 TitleRequestConsent = "Application requests your consent"
 WrongOrLockedUserOrInvalidPassword = "You entered an invalid username or password or your account has been locked."

+[ButtonTitleCancel]
+description = "Title for a button to cancel an action"
+other = "Cancel"
+
+[ButtonTitleConfirmRevoke]
+description = "Title for a button to confirm consent revocation"
+other = "Yes, Revoke!"
+
+[ButtonTitleConsent]
+description = "Title for a button to give consent"
+other = "Consent"
+
+[ButtonTitleDeny]
+description = "Title for a button to deny consent"
+other = "Deny"
+
+[ButtonTitleRevoke]
+description = "Title for a button to revoke consent"
+other = "Revoke"
+
+[ColumnNameActions]
+description = "Title for a table column showing available actions"
+other = "Actions"
+
+[ColumnNameApplication]
+description = "Title for a table column showing application names"
+other = "Application"
+
+[ColumnNameExpires]
+description = "Title for a table column showing the expiry date for a consent"
+other = "Expires"
+
+[ColumnNameGranted]
+description = "Title for a table column showing the time when consent has been granted"
+other = "Granted at"
+
+[ColumnNameSubject]
+description = "Title for a table column showing the subject of a consent"
+other = "Subject"
+
 [EmailChoiceText]
 one = "You have presented a valid client certificate for the following email address:"
 other = "You have presented a valid client certificate for multiple email addresses. Please choose which one you want to present to the application:"
@ -36,3 +88,7 @@ other = "Yes, please use this identity"
 [LabelRejectCertLogin]
 description = "Label for a button to reject certificate login"
 other = "No, please send me back"
+
+[http404]
+description = "HTTP error 404 not found"
+other = "Not found"
--- a/translations/translations.go
+++ b/translations/translations.go
@ -1,5 +1,5 @@
 /*
-Copyright 2020-2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
--- a/ui/templates/base.gohtml
+++ b/ui/templates/base.gohtml
@ -26,13 +26,14 @@
        <meta name="theme-color" content="#11568c">
        <title>{{ .Title }}</title>
    </head>
-    <body class="text-center idp d-flex flex-column h-100">
-    <main role="main" class="flex-shrink-0">
+    <body class="idp d-flex flex-column h-100">
+    <header class="container flex-shrink-0">
+        <a href="/"><img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4"></a>
+    </header>
    {{ template "content" . }}
-    </main>
    <footer class="footer mt-auto py-3">
        <div class="container">
-            <span class="text-muted small">© 2020-2023 <a href="https://www.cacert.org/">CAcert</a></span>
+            <span class="text-muted small">© <a href="https://www.cacert.org/">CAcert</a></span>
        </div>
    </footer>
    <script type="text/javascript" src="/js/cacert.bundle.js"></script>
--- a/ui/templates/client_certificate.gohtml
+++ b/ui/templates/client_certificate.gohtml
@ -1,9 +1,14 @@
 {{ define "content" }}
-    <form class="form-signin" method="post">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
-        <h1 class="h3 mb-3">{{ .Title }}</h1>
-        <p class="text-left">{{ .IntroText }}</p>
-        <p class="text-left">{{ .EmailChoiceText }}</p>
+    <main role="main" class="container">
+        <h1>{{ .Title }}</h1>
+        {{ .IntroText }}
+        {{ with .FlashMessage }}
+            <div class="alert alert-{{ .Type }}" role="alert">
+                {{ .Message }}
+            </div>
+        {{ end }}
+        <form method="post">
+            <p>{{ .EmailChoiceText }}</p>
            <div class="mb-3">
                {{ if eq (len .emails) 1 }}
                    {{ $email_address := index .emails 0 }}
@ -11,20 +16,22 @@
                    <label for="email_0">{{ $email_address }}</label>
                {{ else }}
                    {{ range $index, $element := .emails }}
-                    <input type="radio" name="email" value="{{ $element }}" id="email_{{ $index }}"><label
-                            for="email_{{ $index }}">{{ $element }}</label>
+                        <div class="form-check">
+                            <input class="form-check-input" type="radio" name="email"
+                                   value="{{ $element }}" id="email_{{ $index }}"><label
+                                    class="form-check-label" for="email_{{ $index }}">{{ $element }}</label>
+                        </div>
                    {{ end }}
                {{ end }}
                {{ .csrfField }}
            </div>
            <p class="text-left">{{ .RequestText }}</p>
            <div class="mb-2">
-            <button class="btn btn-lg btn-primary" type="submit" name="use-identity"
+                <button class="btn btn-primary" type="submit" name="use-identity"
                        value="accept">{{ .AcceptLabel }}</button>
-        </div>
-        <div class="mb-2">
                <button class="btn btn-outline-secondary" type="submit" name="use-identity"
                        value="reject">{{ .RejectLabel }}</button>
            </div>
        </form>
+    </main>
 {{ end }}
--- a/ui/templates/confirm_revoke.gohtml
+++ b/ui/templates/confirm_revoke.gohtml
@ -0,0 +1,11 @@
+{{ define "content" }}
+    <main role="main" class="container">
+        <h1 class="h3 mb-3">{{ .Title }}</h1>
+        <p class="text-left">{{ .Explanation }}</p>
+        <form method="post">
+            {{ .csrfField }}
+            <button class="btn btn-danger" type="submit">{{ .ButtonTitleRevoke }}</button>
+            <a class="btn btn-outline-secondary" role="button" href="{{ .CancelLink }}">{{ .ButtonTitleCancel }}</a>
+        </form>
+    </main>
+{{ end }}
--- a/ui/templates/consent.gohtml
+++ b/ui/templates/consent.gohtml
@ -1,13 +1,13 @@
 {{ define "content" }}
-    <form class="form-consent" method="post">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
+    <main role="main" class="container">
        <h1 class="h3 mb-3">{{ .Title }}</h1>
-        {{ if .client.LogoURI }}
-            <p>
-                <img src="{{ .client.LogoURI }}" alt="{{ .client.ClientName }}"/>
+        {{ if .LogoURI }}
+            <p class="text-center">
+                <img src="{{ .LogoURI }}" alt="{{ .ClientName }}" width="240" height="240" />
            </p>
        {{ end }}
-        <p class="text-left">{{ .IntroConsentRequested }}</p>
+        {{ .IntroConsentRequested }}
+        <form method="post">
            <ul class="list-group text-left small mb-3">
                {{ range $i, $scope := .requestedScope }}
                    <li class="list-group-item">
@ -26,15 +26,16 @@
                    {{ end}}
                </ul>
            {{ end }}
-        <p class="text-left">{{ .IntroMoreInformation }}</p>
+            {{ if .HasMoreInformation }}
+                {{ .IntroMoreInformation }}
+            {{ end }}

            {{ .csrfField }}
-        <div class="checkbox mb-3">
-            <label>
-                <input type="checkbox" name="consent" id="consent" value="true"/>
-                {{ .LabelConsent }}</label>
-        </div>
+            {{ .LabelConsent }}

-        <button class="btn btn-lg btn-primary btn-block" type="submit">{{ .LabelSubmit }}</button>
+            <button class="btn btn-primary" type="submit" name="consent"
+                    value="consent">{{ .ButtonTitleConsent }}</button>
+            <button class="btn btn-outline-secondary" type="submit" name="consent" value="deny">{{ .ButtonTitleDeny }}</button>
        </form>
+    </main>
 {{ end }}
--- a/ui/templates/errors.gohtml
+++ b/ui/templates/errors.gohtml
@ -1,13 +1,15 @@
 {{ define "content" }}
-    <div class="container">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
+    <main role="main" class="container">
        <h1>{{ .Title }}</h1>
-        <h2>{{ if .details.ErrorCode }}
-                <strong>{{ .details.ErrorCode }}</strong> {{ end }}{{ .details.ErrorMessage }}</h2>
+        <div class="alert alert-danger">
+            <h2 class="alert-heading">{{ if .details.ErrorCode }}
+                    <strong>{{ .details.ErrorCode }}</strong> {{ end }}{{ .details.ErrorMessage }}
+            </h2>
            {{ if .details.ErrorDetails }}
                {{ range .details.ErrorDetails }}
-                <p>{{ . }}</p>
+                    {{ . }}
                {{ end }}
            {{ end }}
        </div>
+    </main>
 {{ end }}
--- a/ui/templates/hydra_error.gohtml
+++ b/ui/templates/hydra_error.gohtml
@ -1,10 +1,9 @@
 {{ define "content" }}
-    <div class="container">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
+    <main class="container">
        <h1>{{ .Title }}</h1>
        {{ .Explanation }}
        {{ if .ErrorMessage }}
            <div class="alert alert-danger">{{ .ErrorMessage }}</div>
        {{ end }}
-    </div>
+    </main>
 {{ end }}
--- a/ui/templates/index.gohtml
+++ b/ui/templates/index.gohtml
@ -0,0 +1,6 @@
+{{ define "content" }}
+    <main role="main" class="container">
+        <h1>{{ .Title }}</h1>
+        <p>{{ .WelcomeMessage }}</p>
+    </main>
+{{ end }}
--- a/ui/templates/manage_consent.gohtml
+++ b/ui/templates/manage_consent.gohtml
@ -0,0 +1,47 @@
+{{ define "content" }}
+    <main role="main" class="container">
+        <h1>{{ .Title }}</h1>
+        <p class="text-left">{{ .Description }}</p>
+        {{ range .Flashes}}
+            <div class="alert alert-{{ .Type }}" role="alert">
+                {{ .Message }}
+            </div>
+        {{ end }}
+        {{ $buttonTitleRevoke := .ButtonTitleRevoke }}
+        {{ $unknownLabel := .LabelUnknown }}
+        {{ $neverLabel := .LabelNever }}
+        {{ if .ConsentSessions }}
+            <table class="table table-striped">
+                <thead>
+                <tr>
+                    <th>{{ .ApplicationTitle }}</th>
+                    <th>{{ .SubjectTitle }}</th>
+                    <th>{{ .GrantedTitle }}</th>
+                    <th>{{ .ExpiresTitle }}</th>
+                    <th>{{ .ActionsTitle }}</th>
+                </tr>
+                </thead>
+                <tbody>
+                {{ range .ConsentSessions }}
+                    <tr>
+                        <td>{{ .GetClientName }}</td>
+                        <td>{{ .Subject }}</td>
+                        <td>{{ if .GrantedAt }}<span
+                                    title="{{ .GrantedAt }}">{{ .GrantedAt | humantime }}</span>{{ else }}{{ $unknownLabel }}{{ end }}
+                        </td>
+                        <td>{{ if .Expires }}<span
+                                    title="{{ .Expires }}">{{ .Expires | humantime }}</span>{{ else }}{{ $neverLabel }}{{ end }}
+                        </td>
+                        <td><a href="/revoke-consent/{{ .GetID }}?subject={{ .Subject }}" class="btn btn-danger"
+                               role="button">{{ $buttonTitleRevoke }}</a></td>
+                    </tr>
+                {{ end }}
+                </tbody>
+            </table>
+        {{ else}}
+            <div class="alert alert-info">
+                {{ .NoConsentGiven }}
+            </div>
+        {{ end}}
+    </main>
+{{ end }}
--- a/ui/templates/no_challenge_in_request.gohtml
+++ b/ui/templates/no_challenge_in_request.gohtml
@ -1,7 +1,6 @@
 {{ define "content" }}
-    <div class="container">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
-        <h1 class="h3 mb-3">{{ .Title }}</h1>
-        <p class="text-left">{{ .Explanation }}</p>
-    </div>
+    <main role="main" class="container">
+        <h1>{{ .Title }}</h1>
+        <p>{{ .Explanation }}</p>
+    </main>
 {{ end }}
--- a/ui/templates/no_email_in_client_certificate.gohtml
+++ b/ui/templates/no_email_in_client_certificate.gohtml
@ -1,7 +1,6 @@
 {{ define "content" }}
-    <div class="container">
-        <img src="/images/CAcert-logo.svg" width="300" height="68" alt="CAcert" class="mb-4">
-        <h1 class="h3 mb-3">{{ .Title }}</h1>
-        <p class="text-left">{{ .Explanation }}</p>
-    </div>
+    <main role="main" class="container">
+        <h1>{{ .Title }}</h1>
+        <p>{{ .Explanation }}</p>
+    </main>
 {{ end }}
--- a/ui/ui.go
+++ b/ui/ui.go
@ -1,3 +1,20 @@
+/*
+Copyright CAcert Inc.
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 package ui

 import "embed"
Author	SHA1	Message	Date
Jan Dittberner	3e92caf52f	Add check to avoid crashes when a claim element's value is nil	2024-08-16 18:05:08 +02:00
Jan Dittberner	cdaed2f4e4	Prepare changelog for 0.4.0 release	2024-05-20 11:47:00 +02:00
Jan Dittberner	9f44a00c63	Fix linter warnings	2024-05-19 16:05:26 +02:00
Jan Dittberner	7ef12da4fa	Fix subject handling for login requests This change implements handling for the case that a login request retrieved from Hydra has a pre-defined subject. The login request is rejected if the requested subject is not part of the presented client certificate.	2024-05-19 08:12:39 +02:00
Jan Dittberner	bdf37493d0	Debug logging for session	2024-05-12 12:16:54 +02:00
Jan Dittberner	407e9acfcc	Remove comment	2024-05-12 12:16:18 +02:00
Jan Dittberner	e576d981f9	Reduce minimum CSRF key length to 256 bits	2024-05-12 12:15:58 +02:00
Jan Dittberner	9e54bcabbe	Remove copyright years from base template	2024-05-12 12:14:20 +02:00
Jan Dittberner	1e676e8cf1	Switch logging to slog This commit replaces logrus with slog from the Go standard library.	2024-05-12 01:07:34 +02:00
Jan Dittberner	f22f8ff902	Update golangci-lint, fix warnings - remove copyright years - mark unused parameter with _ - add missing empty lines before expressions	2024-05-11 22:42:21 +02:00
Jan Dittberner	f3dc4d71d1	Update dependencies	2024-05-11 22:27:22 +02:00
Jan Dittberner	9aeca21faa	Remove duplicate logo from hydra_error template	2023-08-08 15:20:42 +02:00
Jan Dittberner	a5c583f1f6	Render client logo at specific size	2023-08-07 17:58:45 +02:00
Jan Dittberner	56ff01600f	Improve consent handling - hide client logo if there is no logo URI - hide client information link if there is no client URI - use buttons instead of a checkbox for consent - use Markdown for messages	2023-08-07 17:54:54 +02:00
Jan Dittberner	73735d47b6	Release 0.3.0	2023-08-07 15:19:17 +02:00
Jan Dittberner	44e18ca3a5	Implement consent management The primary change in this commit is the introduction of consent management. A few minor improvements have been made: - move common header to ui/templates/base.gohtml - add an I18NService to unify localization - add a handlers.getLocalizer function - fix translation extraction and merging in Makefile - add a new AuthMiddleware to centralize client certificate authentication - move client certificate handling to internal/handlers/security.go - improver error handling, allow localization of HTTP error messages	2023-08-07 15:15:45 +02:00
Jan Dittberner	679dcb27ce	Adapt to Hydra 2.x - use new SDK package - add session to transport user information from login to consent	2023-08-03 23:51:57 +02:00
Jan Dittberner	cdb7257f7e	Release 0.2.1	2023-08-03 10:47:36 +02:00
Jan Dittberner	e2de4243a9	Enforce email address selection This commit makes sure that an email address is selected when the user presents a client certificate with multiple email addresses.	2023-08-03 10:45:21 +02:00
Jan Dittberner	55530d23e4	Improve login page - improve formatting of login page - improve german translation of message that is shown if a certificate with multiple email addresses is used	2023-08-03 10:43:37 +02:00