Fix linter warnings

Remove copyright years from base template
Switch from logrus to log/slog
2024-05-12 12:12:27 +02:00 · 2024-05-12 12:03:19 +02:00 · 2024-05-12 12:02:27 +02:00 · 2024-05-12 10:20:19 +02:00 · 2024-05-12 10:20:06 +02:00
24 changed files with 278 additions and 253 deletions
--- 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/cmd/app/main.go
+++ b/cmd/app/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");
@ -23,6 +23,7 @@ import (
 	"crypto/x509"
 	"encoding/base64"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"os"
 	"time"
@ -30,7 +31,6 @@ import (
 	"github.com/knadh/koanf"
 	"github.com/knadh/koanf/parsers/toml"
 	"github.com/knadh/koanf/providers/confmap"
-	log "github.com/sirupsen/logrus"

 	"code.cacert.org/cacert/oidc-demo-app/ui"

@ -84,45 +84,59 @@ func (f *StaticFileInfoWrapper) ModTime() time.Time {
 	return f.fixedModTime
 }

-func main() {
-	logger := log.New()
-
-	config, err := services.ConfigureApplication(
-		logger,
-		"RESOURCE_APP",
-		services.DefaultConfiguration,
+func main() { //nolint:cyclop
+	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("RESOURCE_APP", services.DefaultConfiguration)
 	if err != nil {
-		log.Fatalf("error loading configuration: %v", err)
+		logger.Error("error loading configuration", "error", err)
+		os.Exit(1)
 	}

+	if level := config.Bytes("log.level"); level != nil {
+		if err := logLevel.UnmarshalText(level); err != nil {
+			logger.Error("could not parse log level", "error", err)
+			os.Exit(1)
+		}
+
+		slog.SetLogLoggerLevel(logLevel.Level())
+	}
+
+	if config.Bool("log.json") {
+		logHandler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: logLevel})
+		logger = slog.New(logHandler)
+		slog.SetDefault(logger)
+	}
+
+	logLogger := slog.NewLogLogger(logger.Handler(), logLevel.Level())
+
 	oidcServer := config.MustString("oidc.server")
 	oidcClientID := config.MustString("oidc.client-id")
 	oidcClientSecret := config.MustString("oidc.client-secret")

-	if level := config.String("log.level"); level != "" {
-		logLevel, err := log.ParseLevel(level)
-		if err != nil {
-			logger.WithError(err).Fatal("could not parse log level")
-		}
-
-		logger.SetLevel(logLevel)
-	}
-
-	if config.Bool("log.json") {
-		logger.SetFormatter(&log.JSONFormatter{})
-	}
-
-	logger.WithFields(log.Fields{
-		"version": version, "commit": commit, "date": date,
-	}).Info("Starting CAcert OpenID Connect demo application")
-	logger.Infoln("Server is starting")
+	logger.Info(
+		"Starting CAcert OpenID Connect demo application",
+		"version", version, "commit", commit, "date", date,
+	)
+	logger.Info("Server is starting")

 	bundle, catalog := services.InitI18n(logger, config.Strings("i18n.languages"))

 	services.AddMessages(catalog)

-	tlsClientConfig := getTLSConfig(config)
+	tlsClientConfig, err := getTLSConfig(config)
+	if err != nil {
+		logger.Error("error loading tls config", "error", err)
+		os.Exit(1)
+	}

 	apiTransport := &http.Transport{TLSClientConfig: tlsClientConfig}
 	apiClient := &http.Client{Transport: apiTransport}
@ -134,37 +148,53 @@ func main() {
 		APIClient:        apiClient,
 	})
 	if err != nil {
-		logger.WithError(err).Fatal("OpenID Connect discovery failed")
+		logger.Error("OpenID Connect discovery failed", "error", err)
+		os.Exit(1)
 	}

-	sessionPath, sessionAuthKey, sessionEncKey := configureSessionParameters(config)
-	services.InitSessionStore(logger, sessionPath, sessionAuthKey, sessionEncKey)
+	sessionPath, sessionAuthKey, sessionEncKey, err := configureSessionParameters(logger, config)
+	if err != nil {
+		logger.Error("error configuring session parameters", "error", err)
+		os.Exit(1)
+	}

-	authMiddleware := handlers.Authenticate(oidcInfo.OAuth2Config)
+	if err := services.InitSessionStore(sessionPath, sessionAuthKey, sessionEncKey); err != nil {
+		logger.Error("could not initialize session store", "error", err)
+		os.Exit(1)
+	}
+
+	authMiddleware := handlers.Authenticate(logger, oidcInfo.OAuth2Config)

 	publicURL := buildPublicURL(config.MustString("server.name"), config.MustInt("server.port"))

 	tokenInfoService, err := services.InitTokenInfoService(logger, oidcInfo)
 	if err != nil {
-		logger.WithError(err).Fatal("could not initialize token info service")
+		logger.Error("could not initialize token info service", "error", err)
+		os.Exit(1)
 	}

 	indexHandler, err := handlers.NewIndexHandler(logger, bundle, catalog, oidcInfo, publicURL, tokenInfoService)
 	if err != nil {
-		logger.WithError(err).Fatal("could not initialize index handler")
+		logger.Error("could not initialize index handler", "error", err)
+		os.Exit(1)
 	}

 	protectedResource, err := handlers.NewProtectedResourceHandler(
 		logger, bundle, catalog, oidcInfo, publicURL, tokenInfoService,
 	)
 	if err != nil {
-		logger.WithError(err).Fatal("could not initialize protected resource handler")
+		logger.Error("could not initialize protected resource handler", "error", err)
 	}

 	callbackHandler := handlers.NewCallbackHandler(logger, oidcInfo.KeySet, oidcInfo.OAuth2Config)
 	afterLogoutHandler := handlers.NewAfterLogoutHandler(logger)

-	staticFiles := staticFileHandler(logger)
+	staticFiles, err := staticFileHandler()
+	if err != nil {
+		logger.Error("could not initialize static file handler", "error", err)
+
+		os.Exit(1)
+	}

 	router := http.NewServeMux()
 	router.Handle("/", indexHandler)
@ -182,12 +212,13 @@ func main() {
 	}

 	tracing := handlers.Tracing(nextRequestID)
-	logging := handlers.Logging(logger)
+	logging := handlers.Logging(logLogger)
 	hsts := handlers.EnableHSTS()

 	errorMiddleware, err := handlers.ErrorHandling(logger, bundle, catalog)
 	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)
 	}

 	tlsConfig := &tls.Config{
@ -204,13 +235,16 @@ func main() {
 		TLSConfig:    tlsConfig,
 	}

-	handlers.StartApplication(context.Background(), logger, server, publicURL, config)
+	if err := handlers.StartApplication(context.Background(), logger, server, publicURL, config); err != nil {
+		logger.Error("could not start application", "error", err)
+		os.Exit(1)
+	}
 }

-func staticFileHandler(logger *log.Logger) func(w http.ResponseWriter, r *http.Request) {
+func staticFileHandler() (func(w http.ResponseWriter, r *http.Request), error) {
 	stat, err := os.Stat(os.Args[0])
 	if err != nil {
-		logger.WithError(err).Fatal("could not use stat on binary")
+		return nil, fmt.Errorf("could not use stat on binary: %w", err)
 	}

 	fileServer := http.FileServer(&StaticFSWrapper{FileSystem: http.FS(ui.Static), ModTime: stat.ModTime()})
@ -223,10 +257,10 @@ func staticFileHandler(logger *log.Logger) func(w http.ResponseWriter, r *http.R
 		fileServer.ServeHTTP(w, r)
 	}

-	return staticFiles
+	return staticFiles, nil
 }

-func getTLSConfig(config *koanf.Koanf) *tls.Config {
+func getTLSConfig(config *koanf.Koanf) (*tls.Config, error) {
 	tlsClientConfig := &tls.Config{
 		MinVersion: tls.VersionTLS12,
 	}
@ -237,14 +271,14 @@ func getTLSConfig(config *koanf.Koanf) *tls.Config {

 		pemBytes, err := os.ReadFile(rootCAFile)
 		if err != nil {
-			log.Fatalf("could not read CA certificate file: %v", err)
+			return nil, fmt.Errorf("could not read CA certificate file: %w", err)
 		}

 		caCertPool.AppendCertsFromPEM(pemBytes)
 		tlsClientConfig.RootCAs = caCertPool
 	}

-	return tlsClientConfig
+	return tlsClientConfig, nil
 }

 func buildPublicURL(hostname string, port int) string {
@ -257,28 +291,36 @@ func buildPublicURL(hostname string, port int) string {
 	return fmt.Sprintf("https://%s", hostname)
 }

-func configureSessionParameters(config *koanf.Koanf) (string, []byte, []byte) {
+func configureSessionParameters(logger *slog.Logger, config *koanf.Koanf) (string, []byte, []byte, error) {
 	sessionPath := config.MustString("session.path")

 	sessionAuthKey, err := base64.StdEncoding.DecodeString(config.String("session.auth-key"))
 	if err != nil {
-		log.WithError(err).Fatal("could not decode session auth key")
+		return "", nil, nil, fmt.Errorf("could not decode session authentication key: %w", err)
 	}

 	sessionEncKey, err := base64.StdEncoding.DecodeString(config.String("session.enc-key"))
 	if err != nil {
-		log.WithError(err).Fatal("could not decode session encryption key")
+		return "", nil, nil, fmt.Errorf("could not decode session encryption key: %w", err)
 	}

 	generated := false

 	if len(sessionAuthKey) != sessionAuthKeyLength {
-		sessionAuthKey = services.GenerateKey(sessionAuthKeyLength)
+		sessionAuthKey, err = services.GenerateKey(sessionAuthKeyLength)
+		if err != nil {
+			return "", nil, nil, fmt.Errorf("could not generate session authentication key: %w", err)
+		}
+
 		generated = true
 	}

 	if len(sessionEncKey) != sessionKeyLength {
-		sessionEncKey = services.GenerateKey(sessionKeyLength)
+		sessionEncKey, err = services.GenerateKey(sessionKeyLength)
+		if err != nil {
+			return "", nil, nil, fmt.Errorf("could not generate session encryption key: %w", err)
+		}
+
 		generated = true
 	}

@ -290,11 +332,12 @@ func configureSessionParameters(config *koanf.Koanf) (string, []byte, []byte) {

 		tomlData, err := config.Marshal(toml.Parser())
 		if err != nil {
-			log.WithError(err).Fatal("could not encode session config")
+			return "", nil, nil, fmt.Errorf("could not encode session configuration: %w", err)
 		}

-		log.Infof("put the following in your resource_app.toml:\n%s", string(tomlData))
+		logger.Info("put the following in your resource_app.toml")
+		fmt.Print(string(tomlData)) //nolint:forbidigo
 	}

-	return sessionPath, sessionAuthKey, sessionEncKey
+	return sessionPath, sessionAuthKey, sessionEncKey, nil
 }
--- a/go.mod
+++ b/go.mod
@ -1,27 +1,25 @@
 module code.cacert.org/cacert/oidc-demo-app

-go 1.19
+go 1.22

 require (
 	github.com/BurntSushi/toml v1.3.2
-	github.com/gorilla/sessions v1.2.1
+	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/sirupsen/logrus v1.9.3
+	github.com/lestrrat-go/jwx v1.2.29
+	github.com/nicksnyder/go-i18n/v2 v2.4.0
 	github.com/spf13/pflag v1.0.5
-	golang.org/x/oauth2 v0.10.0
-	golang.org/x/text v0.11.0
+	golang.org/x/oauth2 v0.20.0
+	golang.org/x/text v0.15.0
 )

 require (
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
-	github.com/fsnotify/fsnotify v1.6.0 // 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/golang/protobuf v1.5.3 // indirect
-	github.com/gorilla/securecookie v1.1.1 // 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
@ -30,9 +28,6 @@ require (
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/net v0.12.0 // indirect
-	golang.org/x/sys v0.10.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.31.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,7 +1,6 @@
 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/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@ -39,8 +38,9 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/decred/dcrd/crypto/blake256 v1.0.1/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@ -51,8 +51,8 @@ github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
-github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
-github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
@ -84,8 +84,6 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
-github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
@ -98,12 +96,15 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
+github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
-github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
-github.com/gorilla/sessions v1.2.1 h1:DHd3rPN5lE3Ts3D8rKkQ8x/0kqfeNmBAaiSi+o7FsgI=
-github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
+github.com/gorilla/securecookie v1.1.2 h1:YCIWL56dvtr73r6715mJs5ZvhtnY73hBvEF8kXD8ePA=
+github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pwzwo4h3eOamfo=
+github.com/gorilla/sessions v1.2.2 h1:lqzMYz6bOfvn2WriPUjNByzeXIlVzURcPmgMczkmTjY=
+github.com/gorilla/sessions v1.2.2/go.mod h1:ePLdVu+jbEgHH+KWw8I1z2wqd0BAdAQh/8LRvBeoNcQ=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
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 github.com/hashicorp/consul/api v1.13.0/go.mod h1:ZlVrynguJKcYr54zGaDbaL3fOvKC9m72FhPvA8T35KQ=
@ -165,14 +166,14 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/lestrrat-go/backoff/v2 v2.0.8 h1:oNb5E5isby2kiro9AgdHLv5N5tint1AnDVVf2E2un5A=
 github.com/lestrrat-go/backoff/v2 v2.0.8/go.mod h1:rHP/q/r9aT27n24JQLa7JhSQZCKBBOiM/uP402WwN8Y=
-github.com/lestrrat-go/blackmagic v1.0.1 h1:lS5Zts+5HIC/8og6cGHb0uCcNCa3OUt1ygh3Qz2Fe80=
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 github.com/lestrrat-go/httpcc v1.0.1 h1:ydWCStUeJLkpYyjLDHihupbn2tYmZ7m22BGkcvZZrIE=
 github.com/lestrrat-go/httpcc v1.0.1/go.mod h1:qiltp3Mt56+55GPVCbTdM9MlqhvzyuL6W/NMDA8vA5E=
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 github.com/lestrrat-go/iter v1.0.2/go.mod h1:Momfcq3AnRlRjI5b5O8/G5/BvpzrhoFTZcn06fEOPt4=
-github.com/lestrrat-go/jwx v1.2.26 h1:4iFo8FPRZGDYe1t19mQP0zTRqA7n8HnJ5lkIiDvJcB0=
-github.com/lestrrat-go/jwx v1.2.26/go.mod h1:MaiCdGbn3/cckbOFSCluJlJMmp9dmZm5hDuIkx8ftpQ=
+github.com/lestrrat-go/jwx v1.2.29 h1:QT0utmUJ4/12rmsVQrJ3u55bycPkKqGYuGT4tyRhxSQ=
+github.com/lestrrat-go/jwx v1.2.29/go.mod h1:hU8k2l6WF0ncx20uQdOmik/Gjg6E3/wIRtXSNFeZuB8=
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@ -209,8 +210,8 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lN
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
-github.com/nicksnyder/go-i18n/v2 v2.2.1 h1:aOzRCdwsJuoExfZhoiXHy4bjruwCMdt5otbYojM/PaA=
-github.com/nicksnyder/go-i18n/v2 v2.2.1/go.mod h1:fF2++lPHlo+/kPaj3nB0uxtPwzlPm+BlgwGX7MkeGj0=
+github.com/nicksnyder/go-i18n/v2 v2.4.0 h1:3IcvPOAvnCKwNm0TB0dLDTuawWEj+ax/RERNC+diLMM=
+github.com/nicksnyder/go-i18n/v2 v2.4.0/go.mod h1:nxYSZE9M0bf3Y70gPQjN9ha7XNHX7gMc814+6wVyEI4=
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 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
@ -251,14 +252,13 @@ github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
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 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
-github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
-github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
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 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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@ -267,8 +267,9 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
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 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
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@ -285,9 +286,10 @@ golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
-golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
-golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
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 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
@ -306,7 +308,6 @@ golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@ -320,13 +321,12 @@ golang.org/x/net v0.0.0-20210410081132-afb366fc7cd1/go.mod h1:9tjilg8BloeKEkVJvy
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
-golang.org/x/net v0.12.0 h1:cfawfvKITfUsFCeJIHJrbSxpeu/E81khclypR0GVT50=
-golang.org/x/net v0.12.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.10.0 h1:zHCpF2Khkwy4mMB4bv0U37YtJdTGW8jI0glAApi0Kh8=
-golang.org/x/oauth2 v0.10.0/go.mod h1:kTpgurOux7LqtuxjuyZa4Gj2gdezIt/jQtGnNFfypQI=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@ -370,17 +370,19 @@ golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-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=
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 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=
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 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@ -388,11 +390,11 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-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=
@ -413,8 +415,6 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
-google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190404172233-64821d5d2107/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
@ -440,8 +440,6 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 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=
--- a/internal/handlers/after_logout.go
+++ b/internal/handlers/after_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");
@ -18,19 +18,18 @@ limitations under the License.
 package handlers

 import (
+	"log/slog"
 	"net/http"
-
-	"github.com/sirupsen/logrus"
 )

 type AfterLogoutHandler struct {
-	logger *logrus.Logger
+	logger *slog.Logger
 }

 func (h *AfterLogoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	session, err := GetSession(r)
 	if err != nil {
-		h.logger.WithError(err).Error("could not get session")
+		h.logger.Error("could not get session", "error", err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)

 		return
@ -39,13 +38,13 @@ func (h *AfterLogoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	session.Options.MaxAge = -1

 	if err = session.Save(r, w); err != nil {
-		h.logger.WithError(err).Error("could not save session")
+		h.logger.Error("could not save session", "error", err)
 	}

 	w.Header().Set("Location", "/")
 	w.WriteHeader(http.StatusFound)
 }

-func NewAfterLogoutHandler(logger *logrus.Logger) *AfterLogoutHandler {
+func NewAfterLogoutHandler(logger *slog.Logger) *AfterLogoutHandler {
 	return &AfterLogoutHandler{logger: logger}
 }
--- a/internal/handlers/common.go
+++ b/internal/handlers/common.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");
@ -20,6 +20,7 @@ package handlers
 import (
 	"encoding/base64"
 	"fmt"
+	"log/slog"
 	"net/http"

 	"github.com/gorilla/sessions"
@ -34,12 +35,13 @@ const (
 	sessionName               = "resource_app"
 )

-func Authenticate(oauth2Config *oauth2.Config) func(http.Handler) http.Handler {
+func Authenticate(logger *slog.Logger, oauth2Config *oauth2.Config) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			session, err := GetSession(r)
 			if err != nil {
-				http.Error(w, err.Error(), http.StatusInternalServerError)
+				logger.ErrorContext(r.Context(), "failed to get session", "error", err)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 				return
 			}
@ -53,14 +55,21 @@ func Authenticate(oauth2Config *oauth2.Config) func(http.Handler) http.Handler {
 			session.Values[services.SessionRedirectTarget] = r.URL.String()

 			if err = session.Save(r, w); err != nil {
-				http.Error(w, err.Error(), http.StatusInternalServerError)
+				logger.ErrorContext(r.Context(), "failed to save session", "error", err)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 				return
 			}

-			authURL := oauth2Config.AuthCodeURL(
-				base64.URLEncoding.EncodeToString(services.GenerateKey(oauth2RedirectStateLength)),
+			state, err := services.GenerateKey(oauth2RedirectStateLength)
+			if err != nil {
+				logger.ErrorContext(
+					r.Context(), "failed to generate state for starting OIDC flow", "error", err,
 				)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+			}
+
+			authURL := oauth2Config.AuthCodeURL(base64.URLEncoding.EncodeToString(state))

 			w.Header().Set("Location", authURL)
 			w.WriteHeader(http.StatusFound)
@ -68,28 +77,9 @@ func Authenticate(oauth2Config *oauth2.Config) func(http.Handler) http.Handler {
 	}
 }

-/*
-func getRequestedClaims(logger *log.Logger) string {
-	claims := make(models.OIDCClaimsRequest)
-	claims["userinfo"] = make(models.ClaimElement)
-	essentialItem := make(models.IndividualClaimRequest)
-	essentialItem["essential"] = true
-	claims["userinfo"]["https://auth.cacert.org/groups"] = &essentialItem
-
-	target := make([]byte, 0)
-	buf := bytes.NewBuffer(target)
-	enc := json.NewEncoder(buf)
-
-	if err := enc.Encode(claims); err != nil {
-		logger.WithError(err).Warn("could not encode claims request parameter")
-	}
-
-	return buf.String()
-}
-*/
-
 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")
 	}
--- a/internal/handlers/errors.go
+++ b/internal/handlers/errors.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");
@ -21,10 +21,10 @@ import (
 	"context"
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"

 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	log "github.com/sirupsen/logrus"

 	"code.cacert.org/cacert/oidc-demo-app/ui"

@ -47,7 +47,7 @@ type ErrorDetails struct {
 type ErrorBucket struct {
 	errorDetails   *ErrorDetails
 	templates      *template.Template
-	logger         *log.Logger
+	logger         *slog.Logger
 	bundle         *i18n.Bundle
 	messageCatalog *services.MessageCatalog
 }
@ -74,7 +74,7 @@ func (b *ErrorBucket) serveHTTP(w http.ResponseWriter, r *http.Request) {

 		err := b.templates.Lookup("base").Execute(w, data)
 		if err != nil {
-			log.WithError(err).Error("error rendering error template")
+			b.logger.Error("error rendering error template", "error", err)
 			http.Error(
 				w,
 				http.StatusText(http.StatusInternalServerError),
@ -143,7 +143,7 @@ func (w *errorResponseWriter) Write(content []byte) (int, error) {
 }

 func ErrorHandling(
-	logger *log.Logger,
+	logger *slog.Logger,
 	bundle *i18n.Bundle,
 	messageCatalog *services.MessageCatalog,
 ) (func(http.Handler) http.Handler, error) {
--- a/internal/handlers/index.go
+++ b/internal/handlers/index.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");
@ -20,11 +20,11 @@ package handlers
 import (
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"net/url"

 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	log "github.com/sirupsen/logrus"

 	"code.cacert.org/cacert/oidc-demo-app/ui"

@ -34,7 +34,7 @@ import (
 type IndexHandler struct {
 	bundle         *i18n.Bundle
 	indexTemplate  *template.Template
-	logger         *log.Logger
+	logger         *slog.Logger
 	logoutURL      string
 	messageCatalog *services.MessageCatalog
 	publicURL      string
@ -80,7 +80,7 @@ func (h *IndexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {

 	tokenInfo, err := h.tokenInfo.GetTokenInfo(session)
 	if err != nil {
-		h.logger.WithError(err).Error("failed to get token info for request")
+		h.logger.Error("failed to get token info for request", "error", err)

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

@ -88,7 +88,7 @@ func (h *IndexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}

 	if !tokenInfo.Expires.IsZero() {
-		h.logger.WithField("expires", tokenInfo.Expires).Info("id token expires at")
+		h.logger.Info("id token expires at", "expires", tokenInfo.Expires)
 	}

 	w.Header().Add("Content-Type", "text/html")
@ -130,7 +130,7 @@ func (h *IndexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }

 func NewIndexHandler(
-	logger *log.Logger,
+	logger *slog.Logger,
 	bundle *i18n.Bundle,
 	catalog *services.MessageCatalog,
 	oidcInfo *services.OIDCInformation,
--- 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");
--- 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"
 	"net/http"
 	"sync/atomic"
-
-	log "github.com/sirupsen/logrus"
 )

 type key int
@ -64,7 +63,7 @@ func Logging(logger *log.Logger) func(http.Handler) http.Handler {
 					requestID = "unknown"
 				}

-				logger.Infof(
+				logger.Printf(
 					"[%s] %s \"%s %s\" %d %d \"%s\"",
 					requestID,
 					r.RemoteAddr,
@ -97,7 +96,7 @@ 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/oidc_callback.go
+++ b/internal/handlers/oidc_callback.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");
@ -19,12 +19,12 @@ package handlers

 import (
 	"fmt"
+	"log/slog"
 	"net/http"
 	"time"

 	"github.com/gorilla/sessions"
 	"github.com/lestrrat-go/jwx/jwk"
-	log "github.com/sirupsen/logrus"
 	"golang.org/x/oauth2"

 	"code.cacert.org/cacert/oidc-demo-app/internal/services"
@ -32,7 +32,7 @@ import (

 type OidcCallbackHandler struct {
 	keySet       jwk.Set
-	logger       *log.Logger
+	logger       *slog.Logger
 	oauth2Config *oauth2.Config
 }

@ -59,7 +59,7 @@ func (c *OidcCallbackHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)

 	tok, err := c.oauth2Config.Exchange(r.Context(), code)
 	if err != nil {
-		c.logger.WithError(err).Error("could not perform token exchange")
+		c.logger.Error("could not perform token exchange", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
@ -67,14 +67,14 @@ func (c *OidcCallbackHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)

 	session, err := GetSession(r)
 	if err != nil {
-		c.logger.WithError(err).Error("could not get session")
+		c.logger.Error("could not get session", "error", err)
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)

 		return
 	}

 	if err = c.storeTokens(session, tok); err != nil {
-		c.logger.WithError(err).Error("could not store token in session")
+		c.logger.Error("could not store token in session", "error", err)

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

@ -82,7 +82,7 @@ func (c *OidcCallbackHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 	}

 	if err = session.Save(r, w); err != nil {
-		c.logger.WithError(err).Error("could not save session")
+		c.logger.Error("could not save session", "error", err)

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

@ -143,19 +143,20 @@ func (c *OidcCallbackHandler) storeTokens(
 		return fmt.Errorf("could not parse ID token: %w", err)
 	}

-	c.logger.WithFields(log.Fields{
-		"sub":        oidcToken.Subject(),
-		"aud":        oidcToken.Audience(),
-		"issued_at":  oidcToken.IssuedAt(),
-		"iss":        oidcToken.Issuer(),
-		"not_before": oidcToken.NotBefore(),
-		"exp":        oidcToken.Expiration(),
-	}).Debug("receive OpenID Connect ID Token")
+	c.logger.Debug(
+		"receive OpenID Connect ID Token",
+		"sub", oidcToken.Subject(),
+		"aud", oidcToken.Audience(),
+		"issued_at", oidcToken.IssuedAt(),
+		"iss", oidcToken.Issuer(),
+		"not_before", oidcToken.NotBefore(),
+		"exp", oidcToken.Expiration(),
+	)

 	return nil
 }

-func NewCallbackHandler(logger *log.Logger, keySet jwk.Set, oauth2Config *oauth2.Config) *OidcCallbackHandler {
+func NewCallbackHandler(logger *slog.Logger, keySet jwk.Set, oauth2Config *oauth2.Config) *OidcCallbackHandler {
 	return &OidcCallbackHandler{
 		keySet:       keySet,
 		logger:       logger,
--- a/internal/handlers/protected.go
+++ b/internal/handlers/protected.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");
@ -20,11 +20,11 @@ package handlers
 import (
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"net/url"

 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	log "github.com/sirupsen/logrus"

 	"code.cacert.org/cacert/oidc-demo-app/internal/services"
 	"code.cacert.org/cacert/oidc-demo-app/ui"
@ -32,7 +32,7 @@ import (

 type ProtectedResource struct {
 	bundle            *i18n.Bundle
-	logger            *log.Logger
+	logger            *slog.Logger
 	protectedTemplate *template.Template
 	logoutURL         string
 	tokenInfo         *services.TokenInfoService
@ -79,7 +79,7 @@ func (h *ProtectedResource) ServeHTTP(w http.ResponseWriter, r *http.Request) {

 	tokenInfo, err := h.tokenInfo.GetTokenInfo(session)
 	if err != nil {
-		h.logger.WithError(err).Error("failed to get token info for request")
+		h.logger.Error("failed to get token info for request", "error", err)

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

@ -87,7 +87,7 @@ func (h *ProtectedResource) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}

 	if !tokenInfo.Expires.IsZero() {
-		h.logger.WithField("expires", tokenInfo.Expires).Info("id token expires at")
+		h.logger.Info("id token expires at", "expires", tokenInfo.Expires)
 	}

 	if tokenInfo.IDToken == "" {
@ -130,7 +130,7 @@ func (h *ProtectedResource) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }

 func NewProtectedResourceHandler(
-	logger *log.Logger,
+	logger *slog.Logger,
 	bundle *i18n.Bundle,
 	catalog *services.MessageCatalog,
 	oidcInfo *services.OIDCInformation,
--- 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");
--- a/internal/handlers/startup.go
+++ b/internal/handlers/startup.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");
@ -20,6 +20,8 @@ package handlers
 import (
 	"context"
 	"errors"
+	"fmt"
+	"log/slog"
 	"net/http"
 	"os"
 	"os/signal"
@ -27,23 +29,18 @@ import (
 	"time"

 	"github.com/knadh/koanf"
-	"github.com/sirupsen/logrus"
 )

 func StartApplication(
-	ctx context.Context,
-	logger *logrus.Logger,
-	server *http.Server,
-	publicURL string,
-	config *koanf.Koanf,
-) {
+	ctx context.Context, logger *slog.Logger, server *http.Server, publicURL string, config *koanf.Koanf,
+) error {
 	done := make(chan bool)
 	quit := make(chan os.Signal, 1)
 	signal.Notify(quit, os.Interrupt)

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

 		const shutdownWaitTime = 30 * time.Second
@ -55,24 +52,25 @@ func StartApplication(
 		server.SetKeepAlivesEnabled(false)

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

 		close(done)
 	}()

-	logger.WithField("public_url", publicURL).Info("Server is ready to handle requests")
+	logger.Info("Server is ready to handle requests", "public_url", publicURL)
 	atomic.StoreInt32(&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_address",
-			server.Addr,
-		).Fatal("Could not listen on requested address")
+		logger.Error("Could not listen on requested address", "server_address", server.Addr)
+
+		return fmt.Errorf("listening failed: %w", err)
 	}

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

@ -51,13 +51,12 @@ var DefaultConfiguration = map[string]interface{}{
 }

 func ConfigureApplication(
-	logger *logrus.Logger,
 	appName string,
 	defaultConfig map[string]interface{},
 ) (*koanf.Koanf, error) {
 	f := pflag.NewFlagSet("config", pflag.ContinueOnError)
 	f.Usage = func() {
-		logger.Info(f.FlagUsages())
+		log.Print(f.FlagUsages())

 		os.Exit(0)
 	}
@ -70,7 +69,7 @@ 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 +77,18 @@ 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")
+		return nil, fmt.Errorf("could not load configuration from file %s: %w", defaultFile, 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")
+			return nil, fmt.Errorf("error loading configuration from file %s: %w", c, 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 +96,7 @@ 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 variables: %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");
@ -20,6 +20,7 @@ package services
 import (
 	"errors"
 	"fmt"
+	"log/slog"

 	"github.com/nicksnyder/go-i18n/v2/i18n"
 	"golang.org/x/text/language"
@ -27,7 +28,6 @@ import (
 	"code.cacert.org/cacert/oidc-demo-app/translations"

 	"github.com/BurntSushi/toml"
-	log "github.com/sirupsen/logrus"
 )

 func AddMessages(catalog *MessageCatalog) {
@ -83,7 +83,7 @@ func AddMessages(catalog *MessageCatalog) {

 type MessageCatalog struct {
 	messages map[string]*i18n.Message
-	logger   *log.Logger
+	logger   *slog.Logger
 }

 func (m *MessageCatalog) AddMessages(messages map[string]*i18n.Message) {
@ -102,11 +102,11 @@ func (m *MessageCatalog) LookupErrorMessage(

 	message, ok := m.messages[fieldTag]
 	if !ok {
-		m.logger.WithField("field_tag", fieldTag).Info("no specific error message for field and tag")
+		m.logger.Info("no specific error message for field and tag", "field_tag", fieldTag)

 		message, ok = m.messages[tag]
 		if !ok {
-			m.logger.WithField("tag", tag).Info("no specific error message for tag")
+			m.logger.Info("no specific error message for tag", "tag", tag)

 			message, ok = m.messages["unknown"]
 			if !ok {
@ -124,7 +124,7 @@ func (m *MessageCatalog) LookupErrorMessage(
 		},
 	})
 	if err != nil {
-		m.logger.WithError(err).Error("localization failed")
+		m.logger.Error("localization failed", "error", err)

 		return tag
 	}
@ -149,7 +149,7 @@ func (m *MessageCatalog) LookupMessage(
 		return translation
 	}

-	m.logger.WithField("id", id).Warn("no translation found for id")
+	m.logger.Warn("no translation found for id", "id", id)

 	return id
 }
@ -158,19 +158,19 @@ func (m *MessageCatalog) handleLocalizeError(id string, translation string, err
 	var messageNotFound *i18n.MessageNotFoundErr

 	if errors.As(err, &messageNotFound) {
-		m.logger.WithError(err).WithField("message", id).Warn("message not found")
+		m.logger.Warn("message not found", "error", err, "message", id)

 		if translation != "" {
 			return translation
 		}
 	} else {
-		m.logger.WithError(err).WithField("message", id).Error("translation error")
+		m.logger.Error("translation error", "error", err, "message", id)
 	}

 	return id
 }

-func InitI18n(logger *log.Logger, languages []string) (*i18n.Bundle, *MessageCatalog) {
+func InitI18n(logger *slog.Logger, languages []string) (*i18n.Bundle, *MessageCatalog) {
 	bundle := i18n.NewBundle(language.English)
 	bundle.RegisterUnmarshalFunc("toml", toml.Unmarshal)

@ -179,7 +179,7 @@ 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
 		}
@ -192,7 +192,7 @@ func InitI18n(logger *log.Logger, languages []string) (*i18n.Bundle, *MessageCat
 	return bundle, 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/oidc.go
+++ b/internal/services/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");
@ -22,12 +22,12 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"time"

 	"github.com/lestrrat-go/jwx/jwk"
-	log "github.com/sirupsen/logrus"
 	"golang.org/x/oauth2"

 	"code.cacert.org/cacert/oidc-demo-app/internal/models"
@ -57,17 +57,19 @@ type OIDCInformation struct {
 // retrieved by GetOAuth2Config.
 //
 // The JSON Web Key Set can be retrieved by GetJwkSet.
-func DiscoverOIDC(logger *log.Logger, params *OidcParams) (*OIDCInformation, error) {
+func DiscoverOIDC(logger *slog.Logger, params *OidcParams) (*OIDCInformation, error) {
 	discoveryURL, err := url.Parse(params.OidcServer)
 	if err != nil {
-		logger.WithError(err).WithField(
-			"oidc.server",
-			params.OidcServer,
-		).Fatal("could not parse parameter value")
-	} else {
-		discoveryURL.Path = "/.well-known/openid-configuration"
+		logger.Error(
+			"could not parse parameter oidc.server as URL",
+			"oidc.server", params.OidcServer,
+		)
+
+		return nil, fmt.Errorf("could not parse parameter value: %w", err)
 	}

+	discoveryURL.Path = "/.well-known/openid-configuration"
+
 	var (
 		body []byte
 		req  *http.Request
--- a/internal/services/security.go
+++ b/internal/services/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");
@ -19,21 +19,20 @@ package services

 import (
 	"crypto/rand"
-
-	log "github.com/sirupsen/logrus"
+	"fmt"
 )

-func GenerateKey(length int) []byte {
+func GenerateKey(length int) ([]byte, error) {
 	key := make([]byte, length)

 	read, err := rand.Read(key)
 	if err != nil {
-		log.WithError(err).Fatal("could not generate key")
+		return nil, fmt.Errorf("could not generate key: %w", err)
 	}

 	if read != length {
-		log.WithFields(log.Fields{"read": read, "expected": length}).Fatal("read unexpected number of bytes")
+		return nil, fmt.Errorf("read unexpected number of bytes, read %d, expected %d", read, length)
 	}

-	return key
+	return key, nil
 }
--- a/internal/services/session.go
+++ b/internal/services/session.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");
@ -18,10 +18,10 @@ limitations under the License.
 package services

 import (
+	"fmt"
 	"os"

 	"github.com/gorilla/sessions"
-	log "github.com/sirupsen/logrus"
 )

 var store *sessions.FilesystemStore
@ -33,16 +33,18 @@ const (
 	SessionRedirectTarget
 )

-func InitSessionStore(logger *log.Logger, sessionPath string, keys ...[]byte) {
+func InitSessionStore(sessionPath string, keys ...[]byte) error {
 	store = sessions.NewFilesystemStore(sessionPath, keys...)

 	if _, err := os.Stat(sessionPath); err != nil {
 		if os.IsNotExist(err) {
-			if err = os.MkdirAll(sessionPath, 0700); err != nil { //nolint:gomnd
-				logger.WithError(err).Fatal("could not create session store director")
+			if err = os.MkdirAll(sessionPath, 0700); err != nil { //nolint:mnd
+				return fmt.Errorf("could not create session store director: %w", err)
 			}
 		}
 	}
+
+	return nil
 }

 func GetSessionStore() *sessions.FilesystemStore {
--- a/internal/services/token.go
+++ b/internal/services/token.go
@ -1,5 +1,5 @@
 /*
-Copyright 2023 CAcert Inc.
+Copyright CAcert Inc.
 SPDX-License-Identifier: Apache-2.0

 Licensed under the Apache License, Version 2.0 (the "License");
@ -20,13 +20,13 @@ package services
 import (
 	"errors"
 	"fmt"
+	"log/slog"
 	"time"

 	"github.com/gorilla/sessions"
 	"github.com/lestrrat-go/jwx/jwk"
 	"github.com/lestrrat-go/jwx/jwt"
 	"github.com/lestrrat-go/jwx/jwt/openid"
-	log "github.com/sirupsen/logrus"
 )

 type OIDCTokenInfo struct {
@ -39,7 +39,7 @@ type OIDCTokenInfo struct {
 }

 type TokenInfoService struct {
-	logger *log.Logger
+	logger *slog.Logger
 	keySet jwk.Set
 }

@ -49,15 +49,15 @@ func (s *TokenInfoService) GetTokenInfo(session *sessions.Session) (*OIDCTokenIn
 	var ok bool

 	if tokenInfo.AccessToken, ok = session.Values[SessionAccessToken].(string); ok {
-		s.logger.WithField("access_token", tokenInfo.AccessToken).Debug("found access token in session")
+		s.logger.Debug("found access token in session", "access_token", tokenInfo.AccessToken)
 	}

 	if tokenInfo.RefreshToken, ok = session.Values[SessionRefreshToken].(string); ok {
-		s.logger.WithField("refresh_token", tokenInfo.RefreshToken).Debug("found refresh token in session")
+		s.logger.Debug("found refresh token in session", "refresh_token", tokenInfo.RefreshToken)
 	}

 	if tokenInfo.IDToken, ok = session.Values[SessionIDToken].(string); ok {
-		s.logger.WithField("id_token", tokenInfo.IDToken).Debug("found ID token in session")
+		s.logger.Debug("found ID token in session", "id_token", tokenInfo.IDToken)
 	}

 	if tokenInfo.IDToken == "" {
@ -78,7 +78,7 @@ func (s *TokenInfoService) GetTokenInfo(session *sessions.Session) (*OIDCTokenIn
 	return tokenInfo, nil
 }

-func InitTokenInfoService(logger *log.Logger, oidcInfo *OIDCInformation) (*TokenInfoService, error) {
+func InitTokenInfoService(logger *slog.Logger, oidcInfo *OIDCInformation) (*TokenInfoService, error) {
 	return &TokenInfoService{logger: logger, keySet: oidcInfo.KeySet}, nil
 }

--- 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
@ -41,7 +41,7 @@
    {{ template "content" . }}
    <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/ui.go
+++ b/ui/ui.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");
Author	SHA1	Message	Date
Jan Dittberner	be15b18259	Fix linter warnings	2024-05-12 12:12:27 +02:00
Jan Dittberner	9f53e37693	Remove copyright years from base template	2024-05-12 12:03:19 +02:00
Jan Dittberner	c4724723b6	Switch from logrus to log/slog Use log/slog from the Go standard library to reduce dependencies.	2024-05-12 12:02:27 +02:00
Jan Dittberner	291c1857c6	Update dependencies	2024-05-12 10:20:19 +02:00
Jan Dittberner	c607cdae94	Update linter, remove copyright years Git has all history information, copyright years don't provide useful additional information.	2024-05-12 10:20:06 +02:00