cmd/owl/web/auth_test.go

@@ -339,3 +339,61 @@ func TestAuthRedirectUriSameHost(t *testing.T) {
 
 	assertions.AssertStatus(t, rr, http.StatusOK)
 }
+
+func TestAccessTokenCorrectPassword(t *testing.T) {
+	repo, user := getSingleUserTestRepo()
+	user.ResetPassword("testpassword")
+	code, _ := user.GenerateAuthCode("http://example.com", "http://example.com/response", "", "")
+
+	// Create Request and Response
+	form := url.Values{}
+	form.Add("code", code)
+	form.Add("client_id", "http://example.com")
+	form.Add("redirect_uri", "http://example.com/response")
+	form.Add("grant_type", "authorization_code")
+	req, err := http.NewRequest("POST", user.AuthUrl()+"token/", strings.NewReader(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Add("Content-Length", strconv.Itoa(len(form.Encode())))
+	assertions.AssertNoError(t, err, "Error creating request")
+	rr := httptest.NewRecorder()
+	router := main.SingleUserRouter(&repo)
+	router.ServeHTTP(rr, req)
+
+	assertions.AssertStatus(t, rr, http.StatusOK)
+	// parse response as json
+	type responseType struct {
+		Me           string `json:"me"`
+		TokenType    string `json:"token_type"`
+		AccessToken  string `json:"access_token"`
+		ExpiresIn    int    `json:"expires_in"`
+		RefreshToken string `json:"refresh_token"`
+	}
+	var response responseType
+	json.Unmarshal(rr.Body.Bytes(), &response)
+	assertions.AssertEqual(t, response.Me, user.FullUrl())
+	assertions.AssertEqual(t, response.TokenType, "Bearer")
+	assertions.Assert(t, response.ExpiresIn > 0, "ExpiresIn should be greater than 0")
+	assertions.Assert(t, len(response.AccessToken) > 0, "AccessToken should be greater than 0")
+}
+
+func TestAccessTokenWithIncorrectCode(t *testing.T) {
+	repo, user := getSingleUserTestRepo()
+	user.ResetPassword("testpassword")
+	user.GenerateAuthCode("http://example.com", "http://example.com/response", "", "")
+
+	// Create Request and Response
+	form := url.Values{}
+	form.Add("code", "wrongcode")
+	form.Add("client_id", "http://example.com")
+	form.Add("redirect_uri", "http://example.com/response")
+	form.Add("grant_type", "authorization_code")
+	req, err := http.NewRequest("POST", user.AuthUrl()+"token/", strings.NewReader(form.Encode()))
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Add("Content-Length", strconv.Itoa(len(form.Encode())))
+	assertions.AssertNoError(t, err, "Error creating request")
+	rr := httptest.NewRecorder()
+	router := main.SingleUserRouter(&repo)
+	router.ServeHTTP(rr, req)
+
+	assertions.AssertStatus(t, rr, http.StatusUnauthorized)
+}

cmd/owl/web/handler.go

@@ -171,22 +171,14 @@ func userAuthHandler(repo *owl.Repository) func(http.ResponseWriter, *http.Reque
 	}
 }
 
-func userAuthProfileHandler(repo *owl.Repository) func(http.ResponseWriter, *http.Request, httprouter.Params) {
+func verifyAuthCodeRequest(user owl.User, w http.ResponseWriter, r *http.Request) bool {
-	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-		user, err := getUserFromRepo(repo, ps)
-		if err != nil {
-			println("Error getting user: ", err.Error())
-			notFoundHandler(repo)(w, r)
-			return
-		}
-
 	// get form data from post request
-		err = r.ParseForm()
+	err := r.ParseForm()
 	if err != nil {
 		println("Error parsing form: ", err.Error())
 		w.WriteHeader(http.StatusBadRequest)
 		w.Write([]byte("Error parsing form"))
-			return
+		return false
 	}
 	code := r.Form.Get("code")
 	client_id := r.Form.Get("client_id")
@@ -198,8 +190,21 @@ func userAuthProfileHandler(repo *owl.Repository) func(http.ResponseWriter, *htt
 	if !valid {
 		w.WriteHeader(http.StatusUnauthorized)
 		w.Write([]byte("Invalid code"))
+		return false
+	}
+	return true
+}
+
+func userAuthProfileHandler(repo *owl.Repository) func(http.ResponseWriter, *http.Request, httprouter.Params) {
+	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		user, err := getUserFromRepo(repo, ps)
+		if err != nil {
+			println("Error getting user: ", err.Error())
+			notFoundHandler(repo)(w, r)
 			return
-		} else {
+		}
+
+		if verifyAuthCodeRequest(user, w, r) {
 			w.WriteHeader(http.StatusOK)
 			type ResponseProfile struct {
 				Name  string `json:"name"`
@@ -227,7 +232,48 @@ func userAuthProfileHandler(repo *owl.Repository) func(http.ResponseWriter, *htt
 			w.Write(jsonData)
 			return
 		}
+	}
+}
 
+func userAuthTokenHandler(repo *owl.Repository) func(http.ResponseWriter, *http.Request, httprouter.Params) {
+	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		user, err := getUserFromRepo(repo, ps)
+		if err != nil {
+			println("Error getting user: ", err.Error())
+			notFoundHandler(repo)(w, r)
+			return
+		}
+
+		if verifyAuthCodeRequest(user, w, r) {
+			type Response struct {
+				Me           string `json:"me"`
+				TokenType    string `json:"token_type"`
+				AccessToken  string `json:"access_token"`
+				ExpiresIn    int    `json:"expires_in"`
+				RefreshToken string `json:"refresh_token"`
+			}
+			accessToken, duration, err := user.GenerateAccessToken()
+			if err != nil {
+				println("Error generating access token: ", err.Error())
+				w.WriteHeader(http.StatusInternalServerError)
+				w.Write([]byte("Internal server error"))
+				return
+			}
+			response := Response{
+				Me:          user.FullUrl(),
+				TokenType:   "Bearer",
+				AccessToken: accessToken,
+				ExpiresIn:   duration,
+			}
+			jsonData, err := json.Marshal(response)
+			if err != nil {
+				println("Error marshalling json: ", err.Error())
+				w.WriteHeader(http.StatusInternalServerError)
+				w.Write([]byte("Internal server error"))
+			}
+			w.Write(jsonData)
+			return
+		}
 	}
 }
 

cmd/owl/web/server.go

@@ -17,6 +17,7 @@ func Router(repo *owl.Repository) http.Handler {
 	router.GET("/user/:user/auth/", userAuthHandler(repo))
 	router.POST("/user/:user/auth/", userAuthProfileHandler(repo))
 	router.POST("/user/:user/auth/verify/", userAuthVerifyHandler(repo))
+	router.POST("/user/:user/auth/token/", userAuthTokenHandler(repo))
 	router.GET("/user/:user/media/*filepath", userMediaHandler(repo))
 	router.GET("/user/:user/index.xml", userRSSHandler(repo))
 	router.GET("/user/:user/posts/:post/", postHandler(repo))
@@ -33,6 +34,7 @@ func SingleUserRouter(repo *owl.Repository) http.Handler {
 	router.GET("/auth/", userAuthHandler(repo))
 	router.POST("/auth/", userAuthProfileHandler(repo))
 	router.POST("/auth/verify/", userAuthVerifyHandler(repo))
+	router.POST("/auth/token/", userAuthTokenHandler(repo))
 	router.GET("/media/*filepath", userMediaHandler(repo))
 	router.GET("/index.xml", userRSSHandler(repo))
 	router.GET("/posts/:post/", postHandler(repo))

embed/initial/base.html

@@ -29,6 +29,7 @@
     <link rel="webmention" href="{{ .User.WebmentionUrl }}">
     {{ if .User.AuthUrl }}
     <link rel="authorization_endpoint" href="{{ .User.AuthUrl}}">
+    <link rel="token_endpoint" href="{{ .User.TokenUrl}}">
     {{ end }}
     <style>
         header {

user.go

@@ -42,6 +42,12 @@ type AuthCode struct {
 	Created             time.Time `yaml:"created"`
 }
 
+type AccessToken struct {
+	Token     string    `yaml:"token"`
+	Created   time.Time `yaml:"created"`
+	ExpiresIn int       `yaml:"expires_in"`
+}
+
 func (user User) Dir() string {
 	return path.Join(user.repo.UsersDir(), user.name)
 }
@@ -63,6 +69,11 @@ func (user User) AuthUrl() string {
 	return url
 }
 
+func (user User) TokenUrl() string {
+	url, _ := url.JoinPath(user.AuthUrl(), "token/")
+	return url
+}
+
 func (user User) WebmentionUrl() string {
 	url, _ := url.JoinPath(user.FullUrl(), "webmention/")
 	return url
@@ -93,6 +104,10 @@ func (user User) AuthCodesFile() string {
 	return path.Join(user.MetaDir(), "auth_codes.yml")
 }
 
+func (user User) AccessTokensFile() string {
+	return path.Join(user.MetaDir(), "access_tokens.yml")
+}
+
 func (user User) Name() string {
 	return user.name
 }
@@ -323,3 +338,26 @@ func (user User) VerifyAuthCode(
 	}
 	return false
 }
+
+func (user User) getAccessTokens() []AccessToken {
+	codes := make([]AccessToken, 0)
+	loadFromYaml(user.AccessTokensFile(), &codes)
+	return codes
+}
+
+func (user User) addAccessToken(code AccessToken) error {
+	codes := user.getAccessTokens()
+	codes = append(codes, code)
+	return saveToYaml(user.AccessTokensFile(), codes)
+}
+
+func (user User) GenerateAccessToken() (string, int, error) {
+	// generate code
+	token := GenerateRandomString(32)
+	duration := 24 * 60 * 60
+	return token, duration, user.addAccessToken(AccessToken{
+		Token:     token,
+		ExpiresIn: duration,
+		Created:   time.Now(),
+	})
+}