Only show logout (now CSRF protected) if user is authenticated, include relevant authentication logic in GET controllers (this should be moved to middleware)

controllers/get.go

@@ -13,13 +13,28 @@ type Get struct {
 	App *app.App
 }
 
-func (g *Get) ShowHome(w http.ResponseWriter, _ *http.Request) {
+func (g *Get) ShowHome(w http.ResponseWriter, r *http.Request) {
 	type dataStruct struct {
+		CsrfToken       string
+		IsAuthenticated bool
 		Test            string
 	}
 
+	CsrfToken, err := security.GenerateCsrfToken(w, r)
+	if err != nil {
+		return
+	}
+
+	isAuthenticated := true
+	user, err := models.CurrentUser(g.App, r)
+	if err != nil || user.Id == 0 {
+		isAuthenticated = false
+	}
+
 	data := dataStruct{
+		CsrfToken:       CsrfToken,
 		Test:            "Hello World!",
+		IsAuthenticated: isAuthenticated,
 	}
 
 	templating.RenderTemplate(w, "templates/pages/home.html", data)
@@ -28,6 +43,7 @@ func (g *Get) ShowHome(w http.ResponseWriter, _ *http.Request) {
 func (g *Get) ShowRegister(w http.ResponseWriter, r *http.Request) {
 	type dataStruct struct {
 		CsrfToken       string
+		IsAuthenticated bool
 	}
 
 	CsrfToken, err := security.GenerateCsrfToken(w, r)
@@ -35,8 +51,15 @@ func (g *Get) ShowRegister(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	isAuthenticated := true
+	user, err := models.CurrentUser(g.App, r)
+	if err != nil || user.Id == 0 {
+		isAuthenticated = false
+	}
+
 	data := dataStruct{
 		CsrfToken:       CsrfToken,
+		IsAuthenticated: isAuthenticated,
 	}
 
 	templating.RenderTemplate(w, "templates/pages/register.html", data)
@@ -45,6 +68,7 @@ func (g *Get) ShowRegister(w http.ResponseWriter, r *http.Request) {
 func (g *Get) ShowLogin(w http.ResponseWriter, r *http.Request) {
 	type dataStruct struct {
 		CsrfToken       string
+		IsAuthenticated bool
 	}
 
 	CsrfToken, err := security.GenerateCsrfToken(w, r)
@@ -58,8 +82,3 @@ func (g *Get) ShowLogin(w http.ResponseWriter, r *http.Request) {
 
 	templating.RenderTemplate(w, "templates/pages/login.html", data)
 }
-
-func (g *Get) Logout(w http.ResponseWriter, r *http.Request) {
-	models.LogoutUser(g.App, w, r)
-	http.Redirect(w, r, "/", http.StatusFound)
-}

controllers/post.go

@@ -50,3 +50,8 @@ func (p *Post) Register(w http.ResponseWriter, r *http.Request) {
 
 	http.Redirect(w, r, "/login", http.StatusFound)
 }
+
+func (p *Post) Logout(w http.ResponseWriter, r *http.Request) {
+	models.LogoutUser(p.App, w, r)
+	http.Redirect(w, r, "/", http.StatusFound)
+}

database/migrate.go

@@ -9,7 +9,8 @@ import (
 	"reflect"
 )
 
-// Migrate given a dummy object of any type, it will create a table with the same name as the type and create columns with the same name as the fields of the object
+// Migrate given a dummy object of any type, it will create a table with the same name
+// as the type and create columns with the same name as the fields of the object
 func Migrate(app *app.App, anyStruct interface{}) error {
 	valueOfStruct := reflect.ValueOf(anyStruct)
 	typeOfStruct := valueOfStruct.Type()
@@ -23,6 +24,10 @@ func Migrate(app *app.App, anyStruct interface{}) error {
 	for i := 0; i < valueOfStruct.NumField(); i++ {
 		fieldType := typeOfStruct.Field(i)
 		fieldName := fieldType.Name
+
+		// Create column if dummy for migration is NOT zero value
+		fieldValue := valueOfStruct.Field(i).Interface()
+		if !reflect.ValueOf(fieldValue).IsZero() {
 			if fieldName != "Id" && fieldName != "id" {
 				err := createColumn(app, tableName, fieldName, fieldType.Type.Name())
 				if err != nil {
@@ -30,6 +35,7 @@ func Migrate(app *app.App, anyStruct interface{}) error {
 				}
 			}
 		}
+	}
 
 	return nil
 }

go.mod

@@ -1,8 +1,8 @@
 module GoWeb
 
-go 1.21
+go 1.22
 
 require (
 	github.com/lib/pq v1.10.9
-	golang.org/x/crypto v0.17.0
+	golang.org/x/crypto v0.19.0
 )

go.sum

@@ -1,4 +1,4 @@
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
-golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
+golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
-golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=

models/migrations.go

@@ -25,7 +25,7 @@ func RunAllMigrations(app *app.App) error {
 		Id:         1,
 		UserId:     1,
 		AuthToken:  "migrate",
-		RememberMe: false,
+		RememberMe: true, // Booleans must be true to migrate properly
 		CreatedAt:  time.Now(),
 	}
 	err = database.Migrate(app, session)

routes/get.go

@@ -22,12 +22,11 @@ func Get(app *app.App) {
 		return
 	}
 	staticHandler := http.FileServer(http.FS(staticFS))
-	http.Handle("/static/", http.StripPrefix("/static/", staticHandler))
+	http.Handle("GET /static/", http.StripPrefix("/static/", staticHandler))
 	slog.Info("serving static files from embedded file system /static")
 
 	// Pages
-	http.HandleFunc("/", getController.ShowHome)
+	http.HandleFunc("GET /", getController.ShowHome)
-	http.HandleFunc("/login", getController.ShowLogin)
+	http.HandleFunc("GET /login", getController.ShowLogin)
-	http.HandleFunc("/register", getController.ShowRegister)
+	http.HandleFunc("GET /register", getController.ShowRegister)
-	http.HandleFunc("/logout", getController.Logout)
 }

routes/post.go

@@ -15,6 +15,7 @@ func Post(app *app.App) {
 	}
 
 	// User authentication
-	http.HandleFunc("/register-handle", middleware.Csrf(postController.Register))
+	http.HandleFunc("POST /register-handle", middleware.Csrf(postController.Register))
-	http.HandleFunc("/login-handle", middleware.Csrf(postController.Login))
+	http.HandleFunc("POST /login-handle", middleware.Csrf(postController.Login))
+	http.HandleFunc("POST /logout", middleware.Csrf(postController.Logout))
 }

templates/base.html

@@ -6,6 +6,21 @@
     <link href="/static/css/style.css" rel="stylesheet">
 </head>
 <body>
+<div class="navbar">
+    {{ if .IsAuthenticated }}
+    <form action="/logout" method="post">
+        <input name="csrf_token" type="hidden" value="{{ .CsrfToken }}">
+        <input type="submit" value="Logout">
+    </form>
+    {{ else }}
+    <form action="/login" method="get">
+        <input type="submit" value="Login">
+    </form>
+    <form action="/register" method="get">
+        <input type="submit" value="Register">
+    </form>
+    {{ end }}
+</div>
 {{ template "content" . }}
 <div class="footer-container">
     <footer>