Finished Prototype

utils/database/databaseConnector.go

@@ -0,0 +1,117 @@
+package database
+
+import (
+	"database/sql"
+	"fmt"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+var DB *sql.DB
+
+// TODO: Change DB Structure
+func InitDB(filepath string) (err error) {
+	DB, err = sql.Open("sqlite3", filepath)
+	if err != nil {
+		panic(err)
+	}
+	if DB == nil {
+		panic("DB couldn't be initialized")
+	}
+
+	handleError(initObjectTable())
+	handleError(initCollectionTable())
+	handleError(initActorTable())
+	handleError(initUserTable())
+
+	return
+}
+
+func initObjectTable() (err error) {
+	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS object (
+		id TEXT PRIMARY KEY, 
+		type TEXT,
+		attributedTo TEXT,
+		content TEXT,
+		published INTEGER,
+		toActor TEXT
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	return
+}
+
+func initCollectionTable() (err error) {
+	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS collection (
+		id TEXT PRIMARY KEY
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	statement, err = DB.Prepare(`CREATE TABLE IF NOT EXISTS collectionObject (
+		collectionId TEXT, 
+		objectId TEXT,
+		PRIMARY KEY (collectionId, objectId)
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	return
+}
+
+func initActorTable() (err error) {
+	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS actor (
+		id TEXT PRIMARY KEY, 
+		type TEXT,
+		name TEXT,
+		preferredUsername TEXT,
+		summary TEXT,
+		inbox TEXT,
+		outbox TEXT,
+		followers TEXT,
+		following TEXT,
+		liked TEXT
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	return
+}
+
+func initUserTable() (err error) {
+	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS user (
+		id TEXT PRIMARY KEY, 
+		password TEXT,
+		actor TEXT
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	statement, err = DB.Prepare(`CREATE TABLE IF NOT EXISTS session (
+		token TEXT PRIMARY KEY, 
+		userId TEXT
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	return
+}
+
+func handleError(err error) {
+	if err != nil {
+		panic(fmt.Sprintf("Could not execute Database Query: %s", err))
+	}
+}

utils/encryptionService.go

@@ -0,0 +1,76 @@
+package utils
+
+import (
+	"crypto/ed25519"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"fmt"
+	"log"
+
+	"git.nutfactory.org/hoernschen/ActivityPub/config"
+)
+
+func CreateToken() (err error, token string) {
+	b := make([]byte, 8)
+	_, err = rand.Read(b)
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+	token = fmt.Sprintf("%x", b)
+	return
+}
+
+func CreateUUID() (err error, uuid string) {
+	b := make([]byte, 16)
+	_, err = rand.Read(b)
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+	uuid = fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
+	return
+}
+
+// TODO: Check if needed
+func Hash(s []byte) (err error, hashString string) {
+	h := sha256.New()
+	_, err = h.Write(s)
+	if nil != err {
+		return
+	}
+	hash := h.Sum(nil)
+	hashString = base64.StdEncoding.EncodeToString(hash)
+	return
+}
+
+//TODO: Signing Mechanism?
+func GenerateKeyPair() (publicKey ed25519.PublicKey, privateKey ed25519.PrivateKey, err error) {
+	publicKey, privateKey, err = ed25519.GenerateKey(nil)
+	return
+}
+
+func Sign(message []byte) string {
+	signatureBytes := ed25519.Sign(config.PrivateKey, message)
+	return base64.RawStdEncoding.EncodeToString(signatureBytes)
+}
+
+func SignContent(content []byte) (signatures map[string]map[string]string) {
+	if !config.Signing {
+		return
+	}
+	signatures = make(map[string]map[string]string)
+	signatures[config.Homeserver] = make(map[string]string)
+	signatures[config.Homeserver][config.KeyId] = Sign(content)
+	return
+}
+
+func VerifySignature(publicKey []byte, message []byte, signature string) bool {
+	signatureBytes, err := base64.RawStdEncoding.DecodeString(signature)
+	if err != nil {
+		return false
+	}
+	ed25519.Verify(config.PublicKey, message, signatureBytes)
+	return true
+}

utils/logger.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+func APILogger(inner http.Handler, name string) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+
+		inner.ServeHTTP(w, r)
+
+		log.Printf(
+			"%s\t%s\t%s\t%s",
+			r.Method,
+			r.RequestURI,
+			name,
+			time.Since(start),
+		)
+	})
+}

utils/requestChecker.go

@@ -0,0 +1,89 @@
+package utils
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"git.nutfactory.org/hoernschen/ActivityPub/config"
+)
+
+type ErrorResponse struct {
+	ErrorCode    string `json:"errcode,omitempty"`
+	ErrorMessage string `json:"error,omitempty"`
+	RetryTime    int    `json:"retry_after_ms,omitempty"`
+}
+
+func CheckRequest(r *http.Request) (err error) {
+	if !strings.Contains(r.Header.Get("Content-Type"), "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"") {
+		err = errors.New("Content Type not JSON")
+	}
+	return
+}
+
+func GetContentTypeString() string {
+	return "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\""
+}
+
+func GetDefaultContext() string {
+	return "https://www.w3.org/ns/activitystreams"
+}
+
+func GenerateProfileUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/", config.HttpString, config.Homeserver, userId)
+}
+
+func GenerateInboxUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/inbox/", config.HttpString, config.Homeserver, userId)
+}
+
+func GenerateOutboxUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/outbox/", config.HttpString, config.Homeserver, userId)
+}
+
+func GenerateFollowersUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/followers/", config.HttpString, config.Homeserver, userId)
+}
+
+func GenerateFollowingUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/following/", config.HttpString, config.Homeserver, userId)
+}
+
+func GenerateLikedUrl(userId string) string {
+	return fmt.Sprintf("%s://%s/%s/liked/", config.HttpString, config.Homeserver, userId)
+}
+
+func GetAccessToken(r *http.Request) (token string, err error) {
+	token = r.URL.Query().Get("access_token")
+	if token == "" {
+		token = r.Header.Get("Authorization")
+		if token == "" || !strings.Contains(token, "Bearer") {
+			err = errors.New("Missing Token")
+		} else {
+			token = strings.Split(token, " ")[1]
+		}
+	}
+	return
+}
+
+func HandleHTTPError(res *http.Response) (err error) {
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(res.Body)
+	err = errors.New(fmt.Sprintf("%s (%s)", buf.String(), res.Status))
+	return
+}
+
+func RemoveDuplicates(array []string) []string {
+	keys := make(map[string]bool)
+	list := []string{}
+
+	for _, entry := range array {
+		if _, value := keys[entry]; !value {
+			keys[entry] = true
+			list = append(list, entry)
+		}
+	}
+	return list
+}

utils/router/route.go

@@ -0,0 +1,12 @@
+package router
+
+import "net/http"
+
+type Route struct {
+	Name        string
+	Method      string
+	Pattern     string
+	HandlerFunc http.HandlerFunc
+}
+
+type Routes []Route

utils/router/router.go

@@ -0,0 +1,27 @@
+package router
+
+import (
+	"net/http"
+
+	"git.nutfactory.org/hoernschen/ActivityPub/utils"
+	"github.com/gorilla/mux"
+)
+
+func NewRouter(routes Routes) *mux.Router {
+	router := mux.NewRouter().StrictSlash(true)
+
+	for _, route := range routes {
+		var handler http.Handler
+		handler = route.HandlerFunc
+		handler = utils.APILogger(handler, route.Name)
+
+		router.
+			Methods(route.Method).
+			Path(route.Pattern).
+			Name(route.Name).
+			Handler(handler)
+
+	}
+
+	return router
+}