app/activity_pub_service.go

@@ -0,0 +1,169 @@
+package app
+
+import (
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"owl-blogs/app/repository"
+	"owl-blogs/config"
+	"owl-blogs/domain/model"
+	"owl-blogs/render"
+	"time"
+
+	vocab "github.com/go-ap/activitypub"
+	"github.com/go-fed/httpsig"
+)
+
+type ActivityPubConfig struct {
+	PreferredUsername string
+	PublicKeyPem      string
+	PrivateKeyPem     string
+}
+
+// Form implements app.AppConfig.
+func (cfg *ActivityPubConfig) Form(binSvc model.BinaryStorageInterface) string {
+	f, _ := render.RenderTemplateToString("forms/ActivityPubConfig", cfg)
+	return f
+}
+
+// ParseFormData implements app.AppConfig.
+func (cfg *ActivityPubConfig) ParseFormData(data model.HttpFormData, binSvc model.BinaryStorageInterface) error {
+	cfg.PreferredUsername = data.FormValue("PreferredUsername")
+	cfg.PublicKeyPem = data.FormValue("PublicKeyPem")
+	cfg.PrivateKeyPem = data.FormValue("PrivateKeyPem")
+	return nil
+}
+
+func (cfg *ActivityPubConfig) PrivateKey() *rsa.PrivateKey {
+	block, _ := pem.Decode([]byte(cfg.PrivateKeyPem))
+	privKey, _ := x509.ParsePKCS1PrivateKey(block.Bytes)
+	return privKey
+}
+
+type ActivityPubService struct {
+	followersRepo repository.FollowerRepository
+	configRepo    repository.ConfigRepository
+}
+
+func NewActivityPubService(followersRepo repository.FollowerRepository, configRepo repository.ConfigRepository) *ActivityPubService {
+	return &ActivityPubService{
+		followersRepo: followersRepo,
+		configRepo:    configRepo,
+	}
+}
+
+func (s *ActivityPubService) AddFollower(follower string) error {
+	return s.followersRepo.Add(follower)
+}
+
+func (s *ActivityPubService) RemoveFollower(follower string) error {
+	return s.followersRepo.Remove(follower)
+}
+
+func (s *ActivityPubService) AllFollowers() ([]string, error) {
+	return s.followersRepo.All()
+}
+
+func (s *ActivityPubService) sign(privateKey *rsa.PrivateKey, pubKeyId string, body []byte, r *http.Request) error {
+	prefs := []httpsig.Algorithm{httpsig.RSA_SHA256}
+	digestAlgorithm := httpsig.DigestSha256
+	// The "Date" and "Digest" headers must already be set on r, as well as r.URL.
+	headersToSign := []string{httpsig.RequestTarget, "host", "date"}
+	if body != nil {
+		headersToSign = append(headersToSign, "digest")
+	}
+	signer, _, err := httpsig.NewSigner(prefs, digestAlgorithm, headersToSign, httpsig.Signature, 0)
+	if err != nil {
+		return err
+	}
+	// To sign the digest, we need to give the signer a copy of the body...
+	// ...but it is optional, no digest will be signed if given "nil"
+	// If r were a http.ResponseWriter, call SignResponse instead.
+	err = signer.SignRequest(privateKey, pubKeyId, r, body)
+
+	slog.Info("Signed Request", "req", r.Header)
+	return err
+}
+
+func (s *ActivityPubService) GetActor(reqUrl string, fromGame string) (vocab.Actor, error) {
+	c := http.Client{}
+
+	parsedUrl, err := url.Parse(reqUrl)
+	if err != nil {
+		slog.Error("parse error", "err", err)
+		return vocab.Actor{}, err
+	}
+
+	req, _ := http.NewRequest("GET", reqUrl, nil)
+	req.Header.Set("Accept", "application/ld+json")
+	req.Header.Set("Date", time.Now().Format(http.TimeFormat))
+	req.Header.Set("Host", parsedUrl.Host)
+
+	siteConfig := model.SiteConfig{}
+	apConfig := ActivityPubConfig{}
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
+
+	err = s.sign(apConfig.PrivateKey(), siteConfig.FullUrl+"/games/"+fromGame+"#main-key", nil, req)
+	if err != nil {
+		slog.Error("Signing error", "err", err)
+		return vocab.Actor{}, err
+	}
+
+	resp, err := c.Do(req)
+	if err != nil {
+		return vocab.Actor{}, err
+	}
+
+	data, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return vocab.Actor{}, err
+	}
+
+	item, err := vocab.UnmarshalJSON(data)
+	if err != nil {
+		return vocab.Actor{}, err
+	}
+
+	var actor vocab.Actor
+
+	err = vocab.OnActor(item, func(o *vocab.Actor) error {
+		actor = *o
+		return nil
+	})
+
+	return actor, err
+}
+
+func (s *ActivityPubService) VerifySignature(r *http.Request, sender string) error {
+	siteConfig := model.SiteConfig{}
+	apConfig := ActivityPubConfig{}
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
+
+	actor, err := s.GetActor(sender, siteConfig.FullUrl+"/activitypub/actor")
+	// actor does not have a pub key -> don't verify
+	if actor.PublicKey.PublicKeyPem == "" {
+		return nil
+	}
+
+	if err != nil {
+		return err
+	}
+	block, _ := pem.Decode([]byte(actor.PublicKey.PublicKeyPem))
+	pubKey, err := x509.ParsePKIXPublicKey(block.Bytes)
+	if err != nil {
+		return err
+	}
+	slog.Info("retrieved pub key of sender", "actor", actor, "pubKey", pubKey)
+
+	verifier, err := httpsig.NewVerifier(r)
+	if err != nil {
+		return err
+	}
+	return verifier.Verify(pubKey, httpsig.RSA_SHA256)
+}

cmd/owl/main.go

@@ -50,6 +50,7 @@ func App(db infra.Database) *web.WebApp {
 	authorRepo := infra.NewDefaultAuthorRepo(db)
 	configRepo := infra.NewConfigRepo(db)
 	interactionRepo := infra.NewInteractionRepo(db, interactionRegister)
+	followersRepo := infra.NewFollowerRepository(db)
 
 	// Create External Services
 	httpClient := &infra.OwlHttpClient{}
@@ -65,6 +66,7 @@ func App(db infra.Database) *web.WebApp {
 	webmentionService := app.NewWebmentionService(
 		siteConfigService, interactionRepo, entryRepo, httpClient, eventBus,
 	)
+	apService := app.NewActivityPubService(followersRepo, configRepo)
 
 	// setup render functions
 	render.SiteConfigService = siteConfigService
@@ -80,6 +82,7 @@ func App(db infra.Database) *web.WebApp {
 		entryService, entryRegister, binaryService,
 		authorService, configRepo, configRegister,
 		siteConfigService, webmentionService, interactionRepo,
+		apService,
 	)
 
 }

config/config.go

@@ -4,6 +4,7 @@ import "os"
 
 const (
 	SITE_CONFIG       = "site_config"
+	ACT_PUB_CONF_NAME = "activity_pub"
 )
 
 type Config interface {

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/chromedp/sysutil v1.0.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-ap/errors v0.0.0-20240304112515-6077fa9c17b0 // indirect
+	github.com/go-fed/httpsig v1.1.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
 	github.com/gobwas/ws v1.4.0 // indirect

go.sum

@@ -22,6 +22,8 @@ github.com/go-ap/errors v0.0.0-20240304112515-6077fa9c17b0 h1:H9MGShwybHLSln6K8R
 github.com/go-ap/errors v0.0.0-20240304112515-6077fa9c17b0/go.mod h1:5x8a6P/dhmMGFxWLcyYlyOuJ2lRNaHGhRv+yu8BaTSI=
 github.com/go-ap/jsonld v0.0.0-20221030091449-f2a191312c73 h1:GMKIYXyXPGIp+hYiWOhfqK4A023HdgisDT4YGgf99mw=
 github.com/go-ap/jsonld v0.0.0-20221030091449-f2a191312c73/go.mod h1:jyveZeGw5LaADntW+UEsMjl3IlIwk+DxlYNsbofQkGA=
+github.com/go-fed/httpsig v1.1.0 h1:9M+hb0jkEICD8/cAiNqEB66R87tTINszBRTjwjQzWcI=
+github.com/go-fed/httpsig v1.1.0/go.mod h1:RCMrTZvN1bJYtofsG4rd5NaO5obxQ5xBkdiS7xsT7bM=
 github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
 github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
@@ -84,15 +86,21 @@ github.com/valyala/tcplisten v1.0.0 h1:rBHj/Xf+E1tRGZyWIWwJDiRY0zc1Js+CV5DqwacVS
 github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
 github.com/yuin/goldmark v1.7.1 h1:3bajkSilaCbjdKVsKdZjZCLBNPL9pYzrCakKaf4U49U=
 github.com/yuin/goldmark v1.7.1/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
 golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.16.0/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/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=

web/activity_pub_handler.go

@@ -1,46 +1,28 @@
 package web
 
 import (
+	"errors"
+	"log/slog"
+	"net/http"
 	"net/url"
 	"owl-blogs/app"
 	"owl-blogs/app/repository"
 	"owl-blogs/config"
 	"owl-blogs/domain/model"
-	"owl-blogs/render"
 
 	vocab "github.com/go-ap/activitypub"
 	"github.com/go-ap/jsonld"
 
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/adaptor"
 )
 
-const ACT_PUB_CONF_NAME = "activity_pub"
-
 type ActivityPubServer struct {
 	configRepo   repository.ConfigRepository
+	apService    *app.ActivityPubService
 	entryService *app.EntryService
 }
 
-type ActivityPubConfig struct {
-	PreferredUsername string
-	PublicKeyPem      string
-	PrivateKeyPem     string
-}
-
-// Form implements app.AppConfig.
-func (cfg *ActivityPubConfig) Form(binSvc model.BinaryStorageInterface) string {
-	f, _ := render.RenderTemplateToString("forms/ActivityPubConfig", cfg)
-	return f
-}
-
-// ParseFormData implements app.AppConfig.
-func (cfg *ActivityPubConfig) ParseFormData(data model.HttpFormData, binSvc model.BinaryStorageInterface) error {
-	cfg.PreferredUsername = data.FormValue("PreferredUsername")
-	cfg.PublicKeyPem = data.FormValue("PublicKeyPem")
-	cfg.PrivateKeyPem = data.FormValue("PrivateKeyPem")
-	return nil
-}
-
 type WebfingerResponse struct {
 	Subject string          `json:"subject"`
 	Aliases []string        `json:"aliases"`
@@ -53,17 +35,18 @@ type WebfingerLink struct {
 	Href string `json:"href"`
 }
 
-func NewActivityPubServer(configRepo repository.ConfigRepository, entryService *app.EntryService) *ActivityPubServer {
+func NewActivityPubServer(configRepo repository.ConfigRepository, entryService *app.EntryService, apService *app.ActivityPubService) *ActivityPubServer {
 	return &ActivityPubServer{
 		configRepo:   configRepo,
 		entryService: entryService,
+		apService:    apService,
 	}
 }
 
 func (s *ActivityPubServer) HandleWebfinger(ctx *fiber.Ctx) error {
 	siteConfig := model.SiteConfig{}
-	apConfig := ActivityPubConfig{}
+	apConfig := app.ActivityPubConfig{}
-	s.configRepo.Get(ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
 	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
 
 	domain, err := url.Parse(siteConfig.FullUrl)
@@ -95,12 +78,14 @@ func (s *ActivityPubServer) HandleWebfinger(ctx *fiber.Ctx) error {
 func (s *ActivityPubServer) Router(router fiber.Router) {
 	router.Get("/actor", s.HandleActor)
 	router.Get("/outbox", s.HandleOutbox)
+	router.Get("/inbox", s.HandleInbox)
+	router.Get("/followers", s.HandleFollowers)
 }
 
 func (s *ActivityPubServer) HandleActor(ctx *fiber.Ctx) error {
 	siteConfig := model.SiteConfig{}
-	apConfig := ActivityPubConfig{}
+	apConfig := app.ActivityPubConfig{}
-	s.configRepo.Get(ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
 	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
 
 	actor := vocab.PersonNew(vocab.IRI(siteConfig.FullUrl + "/activitypub/actor"))
@@ -126,8 +111,8 @@ func (s *ActivityPubServer) HandleActor(ctx *fiber.Ctx) error {
 
 func (s *ActivityPubServer) HandleOutbox(ctx *fiber.Ctx) error {
 	siteConfig := model.SiteConfig{}
-	apConfig := ActivityPubConfig{}
+	apConfig := app.ActivityPubConfig{}
-	s.configRepo.Get(ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
 	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
 
 	entries, err := s.entryService.FindAllByType(nil, true, false)
@@ -157,5 +142,86 @@ func (s *ActivityPubServer) HandleOutbox(ctx *fiber.Ctx) error {
 	}
 	ctx.Set("Content-Type", "application/activity+json")
 	return ctx.Send(data)
+}
+
+func (s *ActivityPubServer) processFollow(r *http.Request, act *vocab.Activity) error {
+	follower := act.Actor.GetID().String()
+	err := s.apService.VerifySignature(r, follower)
+	if err != nil {
+		return err
+	}
+	err = s.apService.AddFollower(follower)
+	if err != nil {
+		return err
+	}
+
+	// go acpub.Accept(gameName, act)
+
+	return nil
+}
+
+func (s *ActivityPubServer) processUndo(act *vocab.Activity) error {
+	return nil
+}
+
+func (s *ActivityPubServer) HandleInbox(ctx *fiber.Ctx) error {
+	siteConfig := model.SiteConfig{}
+	apConfig := app.ActivityPubConfig{}
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
+
+	body := ctx.Request().Body()
+	data, err := vocab.UnmarshalJSON(body)
+	if err != nil {
+		return err
+	}
+
+	err = vocab.OnActivity(data, func(act *vocab.Activity) error {
+		slog.Info("activity retrieved", "activity", act, "type", act.Type)
+
+		r, err := adaptor.ConvertRequest(ctx, true)
+		if err != nil {
+			return err
+		}
+
+		if act.Type == vocab.FollowType {
+			return s.processFollow(r, act)
+		}
+
+		if act.Type == vocab.UndoType {
+			slog.Info("processing undo")
+			return s.processUndo(act)
+		}
+		return errors.New("only follow and undo actions supported")
+	})
+	return err
 
 }
+
+func (s *ActivityPubServer) HandleFollowers(ctx *fiber.Ctx) error {
+	siteConfig := model.SiteConfig{}
+	apConfig := app.ActivityPubConfig{}
+	s.configRepo.Get(config.ACT_PUB_CONF_NAME, &apConfig)
+	s.configRepo.Get(config.SITE_CONFIG, &siteConfig)
+
+	fs, err := s.apService.AllFollowers()
+	if err != nil {
+		return err
+	}
+
+	followers := vocab.Collection{}
+	for _, f := range fs {
+		followers.Append(vocab.IRI(f))
+	}
+	followers.TotalItems = uint(len(fs))
+	followers.ID = vocab.IRI(siteConfig.FullUrl + "/activitypub/followers")
+	data, err := jsonld.WithContext(
+		jsonld.IRI(vocab.ActivityBaseURI),
+	).Marshal(followers)
+
+	if err != nil {
+		return err
+	}
+	ctx.Set("Content-Type", "application/activity+json")
+	return ctx.Send(data)
+}

web/app.go

@@ -7,6 +7,7 @@ import (
 	"net/url"
 	"owl-blogs/app"
 	"owl-blogs/app/repository"
+	"owl-blogs/config"
 	"owl-blogs/web/middleware"
 
 	"github.com/gofiber/fiber/v2"
@@ -35,11 +36,12 @@ func NewWebApp(
 	siteConfigService *app.SiteConfigService,
 	webmentionService *app.WebmentionService,
 	interactionRepo repository.InteractionRepository,
+	apService *app.ActivityPubService,
 ) *WebApp {
-	app := fiber.New(fiber.Config{
+	fiberApp := fiber.New(fiber.Config{
 		BodyLimit: 50 * 1024 * 1024, // 50MB in bytes
 	})
-	app.Use(middleware.NewUserMiddleware(authorService).Handle)
+	fiberApp.Use(middleware.NewUserMiddleware(authorService).Handle)
 
 	indexHandler := NewIndexHandler(entryService, siteConfigService)
 	listHandler := NewListHandler(entryService, siteConfigService)
@@ -51,15 +53,15 @@ func NewWebApp(
 	webmentionHandler := NewWebmentionHandler(webmentionService, configRepo)
 
 	// Login
-	app.Get("/auth/login", loginHandler.HandleGet)
+	fiberApp.Get("/auth/login", loginHandler.HandleGet)
-	app.Post("/auth/login", loginHandler.HandlePost)
+	fiberApp.Post("/auth/login", loginHandler.HandlePost)
 
 	// admin
 	adminHandler := NewAdminHandler(configRepo, configRegister, typeRegistry)
 	draftHandler := NewDraftHandler(entryService, siteConfigService)
 	binaryManageHandler := NewBinaryManageHandler(configRepo, binService)
 	adminInteractionHandler := NewAdminInteractionHandler(configRepo, interactionRepo)
-	admin := app.Group("/admin")
+	admin := fiberApp.Group("/admin")
 	admin.Use(middleware.NewAuthMiddleware(authorService).Handle)
 	admin.Get("/", adminHandler.Handle)
 	admin.Get("/drafts/", draftHandler.Handle)
@@ -75,7 +77,7 @@ func NewWebApp(
 	adminApi.Post("/binaries", binaryManageHandler.HandleUploadApi)
 
 	// Editor
-	editor := app.Group("/editor")
+	editor := fiberApp.Group("/editor")
 	editor.Use(middleware.NewAuthMiddleware(authorService).Handle)
 	editor.Get("/new/:editor/", editorHandler.HandleGetNew)
 	editor.Post("/new/:editor/", editorHandler.HandlePostNew)
@@ -85,7 +87,7 @@ func NewWebApp(
 	editor.Post("/unpublish/:id/", editorHandler.HandlePostUnpublish)
 
 	// SiteConfig
-	siteConfig := app.Group("/site-config")
+	siteConfig := fiberApp.Group("/site-config")
 	siteConfig.Use(middleware.NewAuthMiddleware(authorService).Handle)
 
 	siteConfigHandler := NewSiteConfigHandler(siteConfigService)
@@ -107,39 +109,39 @@ func NewWebApp(
 	siteConfig.Post("/menus/create/", siteConfigMenusHandler.HandleCreate)
 	siteConfig.Post("/menus/delete/", siteConfigMenusHandler.HandleDelete)
 
-	app.Use("/static", filesystem.New(filesystem.Config{
+	fiberApp.Use("/static", filesystem.New(filesystem.Config{
 		Root:       http.FS(embedDirStatic),
 		PathPrefix: "static",
 		Browse:     false,
 	}))
-	app.Get("/", indexHandler.Handle)
+	fiberApp.Get("/", indexHandler.Handle)
-	app.Get("/lists/:list/", listHandler.Handle)
+	fiberApp.Get("/lists/:list/", listHandler.Handle)
 	// Media
-	app.Get("/media/+", mediaHandler.Handle)
+	fiberApp.Get("/media/+", mediaHandler.Handle)
 	// RSS
-	app.Get("/index.xml", rssHandler.Handle)
+	fiberApp.Get("/index.xml", rssHandler.Handle)
 	// Posts
-	app.Get("/posts/:post/", entryHandler.Handle)
+	fiberApp.Get("/posts/:post/", entryHandler.Handle)
 	// Webmention
-	app.Post("/webmention/", webmentionHandler.Handle)
+	fiberApp.Post("/webmention/", webmentionHandler.Handle)
 	// robots.txt
-	app.Get("/robots.txt", func(c *fiber.Ctx) error {
+	fiberApp.Get("/robots.txt", func(c *fiber.Ctx) error {
 		siteConfig, _ := siteConfigService.GetSiteConfig()
 		sitemapUrl, _ := url.JoinPath(siteConfig.FullUrl, "/sitemap.xml")
 		c.Set("Content-Type", "text/plain")
 		return c.SendString(fmt.Sprintf("User-agent: GPTBot\nDisallow: /\n\nUser-agent: *\nAllow: /\n\nSitemap: %s\n", sitemapUrl))
 	})
 	// sitemap.xml
-	app.Get("/sitemap.xml", NewSiteMapHandler(entryService, siteConfigService).Handle)
+	fiberApp.Get("/sitemap.xml", NewSiteMapHandler(entryService, siteConfigService).Handle)
 
 	// ActivityPub
-	activityPubServer := NewActivityPubServer(configRepo, entryService)
+	activityPubServer := NewActivityPubServer(configRepo, entryService, apService)
-	configRegister.Register(ACT_PUB_CONF_NAME, &ActivityPubConfig{})
+	configRegister.Register(config.ACT_PUB_CONF_NAME, &app.ActivityPubConfig{})
-	app.Get("/.well-known/webfinger", activityPubServer.HandleWebfinger)
+	fiberApp.Get("/.well-known/webfinger", activityPubServer.HandleWebfinger)
-	app.Route("/activitypub", activityPubServer.Router)
+	fiberApp.Route("/activitypub", activityPubServer.Router)
 
 	return &WebApp{
-		FiberApp:       app,
+		FiberApp:       fiberApp,
 		EntryService:   entryService,
 		Registry:       typeRegistry,
 		BinaryService:  binService,