Use proper error comparison

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

README.md

@@ -12,9 +12,12 @@ fine with getting your hands dirty, but I plan on having it ready to go for more
 - Routing/controllers
 - Templating
 - Simple database migration system
+- Built in REST client
 - CSRF protection
+- Middleware
 - Minimal user login/registration + sessions
 - Config file handling
+- Scheduled tasks
 - Entire website compiles into a single binary (~10mb) (excluding env.json)
 - Minimal dependencies (just standard library, postgres driver, and experimental package for bcrypt)
 

app/schedule.go

@@ -22,7 +22,6 @@ type Task struct {
 }
 
 func RunScheduledTasks(app *App, poolSize int, stop <-chan struct{}) {
-	// Run every time the server starts
 	for _, f := range app.ScheduledTasks.EveryReboot {
 		f(app)
 	}
@@ -37,7 +36,6 @@ func RunScheduledTasks(app *App, poolSize int, stop <-chan struct{}) {
 		{Interval: 365 * 24 * time.Hour, Funcs: app.ScheduledTasks.EveryYear},
 	}
 
-	// Set up task runners
 	var wg sync.WaitGroup
 	runners := make([]chan bool, len(tasks))
 	for i, task := range tasks {
@@ -65,10 +63,8 @@ func RunScheduledTasks(app *App, poolSize int, stop <-chan struct{}) {
 		}(task, runner)
 	}
 
-	// Wait for all goroutines to finish
 	wg.Wait()
 
-	// Close channels
 	for _, runner := range runners {
 		close(runner)
 	}

config/config.go

@@ -43,7 +43,6 @@ func LoadConfig() Configuration {
 		}
 	}(file)
 
-	// Decode json config file to Configuration struct named config
 	decoder := json.NewDecoder(file)
 	Config := Configuration{}
 	err = decoder.Decode(&Config)

controllers/get.go

@@ -0,0 +1,65 @@
+package controllers
+
+import (
+	"GoWeb/app"
+	"GoWeb/models"
+	"GoWeb/security"
+	"GoWeb/templating"
+	"net/http"
+)
+
+// Get is a wrapper struct for the App struct
+type Get struct {
+	App *app.App
+}
+
+func (g *Get) ShowHome(w http.ResponseWriter, _ *http.Request) {
+	type dataStruct struct {
+		Test string
+	}
+
+	data := dataStruct{
+		Test: "Hello World!",
+	}
+
+	templating.RenderTemplate(g.App, w, "templates/pages/home.html", data)
+}
+
+func (g *Get) ShowRegister(w http.ResponseWriter, r *http.Request) {
+	type dataStruct struct {
+		CsrfToken string
+	}
+
+	CsrfToken, err := security.GenerateCsrfToken(w, r)
+	if err != nil {
+		return
+	}
+
+	data := dataStruct{
+		CsrfToken: CsrfToken,
+	}
+
+	templating.RenderTemplate(g.App, w, "templates/pages/register.html", data)
+}
+
+func (g *Get) ShowLogin(w http.ResponseWriter, r *http.Request) {
+	type dataStruct struct {
+		CsrfToken string
+	}
+
+	CsrfToken, err := security.GenerateCsrfToken(w, r)
+	if err != nil {
+		return
+	}
+
+	data := dataStruct{
+		CsrfToken: CsrfToken,
+	}
+
+	templating.RenderTemplate(g.App, 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/getController.go

@@ -1,67 +0,0 @@
-package controllers
-
-import (
-	"GoWeb/app"
-	"GoWeb/models"
-	"GoWeb/security"
-	"GoWeb/templating"
-	"net/http"
-)
-
-// GetController is a wrapper struct for the App struct
-type GetController struct {
-	App *app.App
-}
-
-func (getController *GetController) ShowHome(w http.ResponseWriter, _ *http.Request) {
-	type dataStruct struct {
-		Test string
-	}
-
-	data := dataStruct{
-		Test: "Hello World!",
-	}
-
-	templating.RenderTemplate(getController.App, w, "templates/pages/home.html", data)
-}
-
-func (getController *GetController) ShowRegister(w http.ResponseWriter, r *http.Request) {
-	type dataStruct struct {
-		CsrfToken string
-	}
-
-	// Create csrf token
-	CsrfToken, err := security.GenerateCsrfToken(w, r)
-	if err != nil {
-		return
-	}
-
-	data := dataStruct{
-		CsrfToken: CsrfToken,
-	}
-
-	templating.RenderTemplate(getController.App, w, "templates/pages/register.html", data)
-}
-
-func (getController *GetController) ShowLogin(w http.ResponseWriter, r *http.Request) {
-	type dataStruct struct {
-		CsrfToken string
-	}
-
-	// Create csrf token
-	CsrfToken, err := security.GenerateCsrfToken(w, r)
-	if err != nil {
-		return
-	}
-
-	data := dataStruct{
-		CsrfToken: CsrfToken,
-	}
-
-	templating.RenderTemplate(getController.App, w, "templates/pages/login.html", data)
-}
-
-func (getController *GetController) Logout(w http.ResponseWriter, r *http.Request) {
-	models.LogoutUser(getController.App, w, r)
-	http.Redirect(w, r, "/", http.StatusFound)
-}

controllers/post.go

@@ -3,25 +3,17 @@ package controllers
 import (
 	"GoWeb/app"
 	"GoWeb/models"
-	"GoWeb/security"
 	"log"
 	"net/http"
 	"time"
 )
 
-// PostController is a wrapper struct for the App struct
+// Post is a wrapper struct for the App struct
-type PostController struct {
+type Post struct {
 	App *app.App
 }
 
-func (postController *PostController) Login(w http.ResponseWriter, r *http.Request) {
+func (p *Post) Login(w http.ResponseWriter, r *http.Request) {
-	// Validate csrf token
-	_, err := security.VerifyCsrfToken(r)
-	if err != nil {
-		log.Println("Error verifying csrf token")
-		return
-	}
-
 	username := r.FormValue("username")
 	password := r.FormValue("password")
 	remember := r.FormValue("remember") == "on"
@@ -31,7 +23,7 @@ func (postController *PostController) Login(w http.ResponseWriter, r *http.Reque
 		http.Redirect(w, r, "/login", http.StatusFound)
 	}
 
-	_, err = models.AuthenticateUser(postController.App, w, username, password, remember)
+	_, err := models.AuthenticateUser(p.App, w, username, password, remember)
 	if err != nil {
 		log.Println("Error authenticating user")
 		log.Println(err)
@@ -42,14 +34,7 @@ func (postController *PostController) Login(w http.ResponseWriter, r *http.Reque
 	http.Redirect(w, r, "/", http.StatusFound)
 }
 
-func (postController *PostController) Register(w http.ResponseWriter, r *http.Request) {
+func (p *Post) Register(w http.ResponseWriter, r *http.Request) {
-	// Validate csrf token
-	_, err := security.VerifyCsrfToken(r)
-	if err != nil {
-		log.Println("Error verifying csrf token")
-		return
-	}
-
 	username := r.FormValue("username")
 	password := r.FormValue("password")
 	createdAt := time.Now()
@@ -60,7 +45,7 @@ func (postController *PostController) Register(w http.ResponseWriter, r *http.Re
 		http.Redirect(w, r, "/register", http.StatusFound)
 	}
 
-	_, err = models.CreateUser(postController.App, username, password, createdAt, updatedAt)
+	_, err := models.CreateUser(p.App, username, password, createdAt, updatedAt)
 	if err != nil {
 		log.Println("Error creating user")
 		log.Println(err)

database/connection.go

@@ -8,8 +8,8 @@ import (
 	"log"
 )
 
-// ConnectDB returns a new database connection
+// Connect returns a new database connection
-func ConnectDB(app *app.App) *sql.DB {
+func Connect(app *app.App) *sql.DB {
 	// Set connection parameters from config
 	postgresConfig := fmt.Sprintf("host=%s port=%s user=%s "+
 		"password=%s dbname=%s sslmode=disable",

database/migrate.go

@@ -36,7 +36,6 @@ func Migrate(app *app.App, anyStruct interface{}) error {
 
 // createTable creates a table with the given name if it doesn't exist, it is assumed that id will be the primary key
 func createTable(app *app.App, tableName string) error {
-	// Check to see if the table already exists
 	var tableExists bool
 	err := app.Db.QueryRow("SELECT EXISTS (SELECT 1 FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relname ~ $1 AND pg_catalog.pg_table_is_visible(c.oid))", "^"+tableName+"$").Scan(&tableExists)
 	if err != nil {
@@ -63,7 +62,6 @@ func createTable(app *app.App, tableName string) error {
 
 // createColumn creates a column with the given name and type if it doesn't exist
 func createColumn(app *app.App, tableName, columnName, columnType string) error {
-	// Check to see if the column already exists
 	var columnExists bool
 	err := app.Db.QueryRow("SELECT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = $1 AND column_name = $2)", tableName, columnName).Scan(&columnExists)
 	if err != nil {

go.mod

@@ -3,6 +3,6 @@ module GoWeb
 go 1.20
 
 require (
-	github.com/lib/pq v1.10.7
+	github.com/lib/pq v1.10.9
-	golang.org/x/crypto v0.7.0
+	golang.org/x/crypto v0.11.0
 )

go.sum

@@ -1,4 +1,4 @@
-github.com/lib/pq v1.10.7 h1:p7ZhMD+KsSRozJr34udlUrhboJwWAgCg34+/ZZNvZZw=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
-github.com/lib/pq v1.10.7/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
-golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
+golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
-golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
+golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=

main.go

@@ -8,6 +8,7 @@ import (
 	"GoWeb/routes"
 	"context"
 	"embed"
+	"errors"
 	"log"
 	"net/http"
 	"os"
@@ -44,7 +45,7 @@ func main() {
 	log.SetOutput(file)
 
 	// Connect to database and run migrations
-	appLoaded.Db = database.ConnectDB(&appLoaded)
+	appLoaded.Db = database.Connect(&appLoaded)
 	if appLoaded.Config.Db.AutoMigrate {
 		err = models.RunAllMigrations(&appLoaded)
 		if err != nil {
@@ -60,15 +61,15 @@ func main() {
 	}
 
 	// Define Routes
-	routes.GetRoutes(&appLoaded)
+	routes.Get(&appLoaded)
-	routes.PostRoutes(&appLoaded)
+	routes.Post(&appLoaded)
 
 	// Start server
 	server := &http.Server{Addr: appLoaded.Config.Listen.Ip + ":" + appLoaded.Config.Listen.Port}
 	go func() {
 		log.Println("Starting server and listening on " + appLoaded.Config.Listen.Ip + ":" + appLoaded.Config.Listen.Port)
 		err := server.ListenAndServe()
-		if err != nil && err != http.ErrServerClosed {
+		if err != nil && !errors.Is(err, http.ErrServerClosed) {
 			log.Fatalf("Could not listen on %s: %v\n", appLoaded.Config.Listen.Ip+":"+appLoaded.Config.Listen.Port, err)
 		}
 	}()
@@ -78,6 +79,7 @@ func main() {
 	signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)
 	stop := make(chan struct{})
 	go app.RunScheduledTasks(&appLoaded, 100, stop)
+
 	<-interrupt
 	log.Println("Interrupt signal received. Shutting down server...")
 

middleware/csrf.go

@@ -0,0 +1,21 @@
+package middleware
+
+import (
+	"GoWeb/security"
+	"log"
+	"net/http"
+)
+
+// Csrf validates the CSRF token and returns the handler function if it succeeded
+func Csrf(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		_, err := security.VerifyCsrfToken(r)
+		if err != nil {
+			log.Println("Error verifying csrf token")
+			http.Error(w, "Forbidden", http.StatusForbidden)
+			return
+		}
+
+		f(w, r)
+	}
+}

middleware/groups.go

@@ -0,0 +1,5 @@
+package middleware
+
+import "net/http"
+
+type MiddlewareFunc func(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request)

middleware/wrapper.go

@@ -0,0 +1,14 @@
+package middleware
+
+import "net/http"
+
+// ProcessGroup is a wrapper function for the http.HandleFunc function
+// that takes the function you want to execute (f) and the middleware you want
+// to execute (m) this should be used when processing multiple groups of middleware at a time
+func ProcessGroup(f func(w http.ResponseWriter, r *http.Request), m []MiddlewareFunc) func(w http.ResponseWriter, r *http.Request) {
+	for _, middleware := range m {
+		_ = middleware(f)
+	}
+
+	return f
+}

models/session.go

@@ -64,16 +64,26 @@ func CreateSession(app *app.App, w http.ResponseWriter, userId int64, remember b
 	return session, nil
 }
 
+func GetSessionByAuthToken(app *app.App, authToken string) (Session, error) {
+	session := Session{}
+
+	err := app.Db.QueryRow(selectSessionByAuthToken, authToken).Scan(&session.Id, &session.UserId, &session.AuthToken, &session.RememberMe, &session.CreatedAt)
+	if err != nil {
+		log.Println("Error getting session by auth token")
+		return Session{}, err
+	}
+
+	return session, nil
+}
+
 // Generates a random 64-byte string
 func generateAuthToken(app *app.App) string {
-	// Generate random bytes
 	b := make([]byte, 64)
 	_, err := rand.Read(b)
 	if err != nil {
 		log.Println("Error generating random bytes")
 	}
 
-	// Convert random bytes to hex string
 	return hex.EncodeToString(b)
 }
 
@@ -117,7 +127,6 @@ func deleteSessionCookie(app *app.App, w http.ResponseWriter) {
 
 // DeleteSessionByAuthToken deletes a session from the database by AuthToken
 func DeleteSessionByAuthToken(app *app.App, w http.ResponseWriter, authToken string) error {
-	// Delete session from database
 	_, err := app.Db.Exec(deleteSessionByAuthToken, authToken)
 	if err != nil {
 		log.Println("Error deleting session from database")

models/user.go

@@ -23,7 +23,6 @@ const userColumns = "\"Id\", " + userColumnsNoId
 const userTable = "public.\"User\""
 
 const (
-	selectSessionIdByAuthToken = "SELECT \"Id\" FROM public.\"Session\" WHERE \"AuthToken\" = $1"
 	selectUserById       = "SELECT " + userColumns + " FROM " + userTable + " WHERE \"Id\" = $1"
 	selectUserByUsername = "SELECT " + userColumns + " FROM " + userTable + " WHERE \"Username\" = $1"
 	insertUser           = "INSERT INTO " + userTable + " (" + userColumnsNoId + ") VALUES ($1, $2, $3, $4) RETURNING \"Id\""
@@ -37,23 +36,19 @@ func GetCurrentUser(app *app.App, r *http.Request) (User, error) {
 		return User{}, err
 	}
 
-	var userId int64
+	session, err := GetSessionByAuthToken(app, cookie.Value)
-
-	// Query row by AuthToken
-	err = app.Db.QueryRow(selectSessionIdByAuthToken, cookie.Value).Scan(&userId)
 	if err != nil {
-		log.Println("Error querying session row with session: " + cookie.Value)
+		log.Println("Error getting session by auth token")
 		return User{}, err
 	}
 
-	return GetUserById(app, userId)
+	return GetUserById(app, session.UserId)
 }
 
 // GetUserById finds a User table row in the database by id and returns a struct representing this row
 func GetUserById(app *app.App, id int64) (User, error) {
 	user := User{}
 
-	// Query row by id
 	err := app.Db.QueryRow(selectUserById, id).Scan(&user.Id, &user.Username, &user.Password, &user.CreatedAt, &user.UpdatedAt)
 	if err != nil {
 		log.Println("Get user error (user not found) for user id:" + strconv.FormatInt(id, 10))
@@ -67,7 +62,6 @@ func GetUserById(app *app.App, id int64) (User, error) {
 func GetUserByUsername(app *app.App, username string) (User, error) {
 	user := User{}
 
-	// Query row by username
 	err := app.Db.QueryRow(selectUserByUsername, username).Scan(&user.Id, &user.Username, &user.Password, &user.CreatedAt, &user.UpdatedAt)
 	if err != nil {
 		log.Println("Get user error (user not found) for user:" + username)
@@ -79,7 +73,6 @@ func GetUserByUsername(app *app.App, username string) (User, error) {
 
 // CreateUser creates a User table row in the database
 func CreateUser(app *app.App, username string, password string, createdAt time.Time, updatedAt time.Time) (User, error) {
-	// Hash password
 	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
 	if err != nil {
 		log.Println("Error hashing password when creating user")
@@ -101,14 +94,12 @@ func CreateUser(app *app.App, username string, password string, createdAt time.T
 func AuthenticateUser(app *app.App, w http.ResponseWriter, username string, password string, remember bool) (Session, error) {
 	var user User
 
-	// Query row by username
 	err := app.Db.QueryRow(selectUserByUsername, username).Scan(&user.Id, &user.Username, &user.Password, &user.CreatedAt, &user.UpdatedAt)
 	if err != nil {
 		log.Println("Authentication error (user not found) for user:" + username)
 		return Session{}, err
 	}
 
-	// Validate password
 	err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password))
 	if err != nil { // Failed to validate password, doesn't match
 		log.Println("Authentication error (incorrect password) for user:" + username)
@@ -120,14 +111,12 @@ func AuthenticateUser(app *app.App, w http.ResponseWriter, username string, pass
 
 // LogoutUser deletes the session cookie and AuthToken from the database
 func LogoutUser(app *app.App, w http.ResponseWriter, r *http.Request) {
-	// Get cookie from request
 	cookie, err := r.Cookie("session")
 	if err != nil {
 		log.Println("Error getting cookie from request")
 		return
 	}
 
-	// Set token to empty string
 	err = DeleteSessionByAuthToken(app, w, cookie.Value)
 	if err != nil {
 		log.Println("Error deleting session by AuthToken")

restclient/client.go

@@ -0,0 +1,65 @@
+package restclient
+
+import (
+	"bytes"
+	"encoding/json"
+	"mime/multipart"
+	"net/http"
+)
+
+// SendRequest sends an HTTP request to a URL and includes the specified headers and body.
+// A body can be nil for GET requests, a map[string]string for multipart/form-data requests,
+// or a struct for JSON requests
+func SendRequest(url string, method string, headers map[string]string, body interface{}) (http.Response, error) {
+	var reqBody *bytes.Buffer
+	var contentType string
+
+	switch v := body.(type) {
+	case nil:
+		reqBody = bytes.NewBuffer([]byte(""))
+	case map[string]string:
+		reqBody = &bytes.Buffer{}
+		writer := multipart.NewWriter(reqBody)
+		for key, value := range v {
+			err := writer.WriteField(key, value)
+			if err != nil {
+				return http.Response{}, err
+			}
+		}
+
+		err := writer.Close()
+		if err != nil {
+			return http.Response{}, err
+		}
+
+		contentType = writer.FormDataContentType()
+	default:
+		jsonBody, err := json.Marshal(body)
+		if err != nil {
+			return http.Response{}, err
+		}
+		reqBody = bytes.NewBuffer(jsonBody)
+		contentType = "application/json"
+	}
+
+	req, err := http.NewRequest(method, url, reqBody)
+	if err != nil {
+		return http.Response{}, err
+	}
+
+	if contentType != "" {
+		req.Header.Set("Content-Type", contentType)
+	}
+
+	for key, value := range headers {
+		req.Header.Add(key, value)
+	}
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return http.Response{}, err
+	}
+
+	return *resp, nil
+}

routes/get.go

@@ -8,10 +8,10 @@ import (
 	"net/http"
 )
 
-// GetRoutes defines all project get routes
+// Get defines all project get routes
-func GetRoutes(app *app.App) {
+func Get(app *app.App) {
 	// Get controller struct initialize
-	getController := controllers.GetController{
+	getController := controllers.Get{
 		App: app,
 	}
 

routes/post.go

@@ -0,0 +1,20 @@
+package routes
+
+import (
+	"GoWeb/app"
+	"GoWeb/controllers"
+	"GoWeb/middleware"
+	"net/http"
+)
+
+// Post defines all project post routes
+func Post(app *app.App) {
+	// Post controller struct initialize
+	postController := controllers.Post{
+		App: app,
+	}
+
+	// User authentication
+	http.HandleFunc("/register-handle", middleware.Csrf(postController.Register))
+	http.HandleFunc("/login-handle", middleware.Csrf(postController.Login))
+}

routes/postRoutes.go

@@ -1,19 +0,0 @@
-package routes
-
-import (
-	"GoWeb/app"
-	"GoWeb/controllers"
-	"net/http"
-)
-
-// PostRoutes defines all project post routes
-func PostRoutes(app *app.App) {
-	// Post controller struct initialize
-	postController := controllers.PostController{
-		App: app,
-	}
-
-	// User authentication
-	http.HandleFunc("/register-handle", postController.Register)
-	http.HandleFunc("/login-handle", postController.Login)
-}

security/csrf.go

@@ -10,7 +10,6 @@ import (
 
 // GenerateCsrfToken generates a csrf token and assigns it to a cookie for double submit cookie csrf protection
 func GenerateCsrfToken(w http.ResponseWriter, _ *http.Request) (string, error) {
-	// Generate random 64 character string (alpha-numeric)
 	buff := make([]byte, int(math.Ceil(float64(64)/2)))
 	_, err := rand.Read(buff)
 	if err != nil {