func main() {
m := macaron.Classic()
// New permissions middleware
perm, err := permissionHSTORE.New()
if err != nil {
log.Fatalln(err)
}
// Blank slate, no default permissions
//perm.Clear()
// Logging middleware
m.Use(macaron.Logger())
// Renderer middleware
m.Use(macaron.Renderer())
// Set up a middleware handler for Macaron, with a custom "permission denied" message.
permissionHandler := func(ctx *macaron.Context) {
// Check if the user has the right admin/user rights
if perm.Rejected(ctx.Resp, ctx.Req.Request) {
fmt.Fprintf(ctx.Resp, "Permission denied!")
// Deny the request
ctx.Error(http.StatusForbidden)
// Don't call other middleware handlers
return
}
// Call the next middleware handler
ctx.Next()
}
// Enable the permissions middleware, must come before recovery
m.Use(permissionHandler)
// Recovery middleware
m.Use(macaron.Recovery())
// Get the userstate, used in the handlers below
userstate := perm.UserState()
m.Get("/", func(ctx *macaron.Context) (msg string) {
msg += fmt.Sprintf("Has user bob: %v\n", userstate.HasUser("bob"))
msg += fmt.Sprintf("Logged in on server: %v\n", userstate.IsLoggedIn("bob"))
msg += fmt.Sprintf("Is confirmed: %v\n", userstate.IsConfirmed("bob"))
msg += fmt.Sprintf("Username stored in cookies (or blank): %v\n", userstate.Username(ctx.Req.Request))
msg += fmt.Sprintf("Current user is logged in, has a valid cookie and *user rights*: %v\n", userstate.UserRights(ctx.Req.Request))
msg += fmt.Sprintf("Current user is logged in, has a valid cookie and *admin rights*: %v\n", userstate.AdminRights(ctx.Req.Request))
msg += fmt.Sprintln("\nTry: /register, /confirm, /remove, /login, /logout, /makeadmin, /clear, /data and /admin")
return // msg
})
m.Get("/register", func(ctx *macaron.Context) string {
userstate.AddUser("bob", "hunter1", "*****@*****.**")
return fmt.Sprintf("User bob was created: %v\n", userstate.HasUser("bob"))
})
m.Get("/confirm", func(ctx *macaron.Context) string {
userstate.MarkConfirmed("bob")
return fmt.Sprintf("User bob was confirmed: %v\n", userstate.IsConfirmed("bob"))
})
m.Get("/remove", func(ctx *macaron.Context) string {
userstate.RemoveUser("bob")
return fmt.Sprintf("User bob was removed: %v\n", !userstate.HasUser("bob"))
})
m.Get("/login", func(ctx *macaron.Context) string {
// Headers will be written, for storing a cookie
userstate.Login(ctx.Resp, "bob")
return fmt.Sprintf("bob is now logged in: %v\n", userstate.IsLoggedIn("bob"))
})
m.Get("/logout", func(ctx *macaron.Context) string {
userstate.Logout("bob")
return fmt.Sprintf("bob is now logged out: %v\n", !userstate.IsLoggedIn("bob"))
})
m.Get("/makeadmin", func(ctx *macaron.Context) string {
userstate.SetAdminStatus("bob")
return fmt.Sprintf("bob is now administrator: %v\n", userstate.IsAdmin("bob"))
})
m.Get("/clear", func(ctx *macaron.Context) string {
userstate.ClearCookie(ctx.Resp)
return "Clearing cookie"
})
m.Get("/data", func(ctx *macaron.Context) string {
return "user page that only logged in users must see!"
})
m.Get("/admin", func(ctx *macaron.Context) {
fmt.Fprintf(ctx.Resp, "super secret information that only logged in administrators must see!\n\n")
if usernames, err := userstate.AllUsernames(); err == nil {
fmt.Fprintf(ctx.Resp, "list of all users: "+strings.Join(usernames, ", "))
}
})
// Serve
m.Run(3000)
}
func main() {
e := echo.New()
// New permissions middleware
perm, err := permissionHSTORE.New()
if err != nil {
log.Fatalln(err)
}
// Blank slate, no default permissions
//perm.Clear()
// Set up a middleware handler for Echo, with a custom "permission denied" message.
permissionHandler := echo.MiddlewareFunc(func(next echo.HandlerFunc) echo.HandlerFunc {
return echo.HandlerFunc(func(c echo.Context) error {
// Check if the user has the right admin/user rights
if perm.Rejected(w(c), req(c)) {
// Deny the request
return echo.NewHTTPError(http.StatusForbidden, "Permission denied!")
}
// Continue the chain of middleware
return next(c)
})
})
// Logging middleware
e.Use(middleware.Logger())
// Enable the permissions middleware, must come before recovery
e.Use(permissionHandler)
// Recovery middleware
e.Use(middleware.Recover())
// Get the userstate, used in the handlers below
userstate := perm.UserState()
e.Get("/", echo.HandlerFunc(func(c echo.Context) error {
var buf bytes.Buffer
b2s := map[bool]string{false: "false", true: "true"}
buf.WriteString("Has user bob: " + b2s[userstate.HasUser("bob")] + "\n")
buf.WriteString("Logged in on server: " + b2s[userstate.IsLoggedIn("bob")] + "\n")
buf.WriteString("Is confirmed: " + b2s[userstate.IsConfirmed("bob")] + "\n")
buf.WriteString("Username stored in cookies (or blank): " + userstate.Username(req(c)) + "\n")
buf.WriteString("Current user is logged in, has a valid cookie and *user rights*: " + b2s[userstate.UserRights(req(c))] + "\n")
buf.WriteString("Current user is logged in, has a valid cookie and *admin rights*: " + b2s[userstate.AdminRights(req(c))] + "\n")
buf.WriteString("\nTry: /register, /confirm, /remove, /login, /logout, /makeadmin, /clear, /data and /admin")
return c.String(http.StatusOK, buf.String())
}))
e.Get("/register", echo.HandlerFunc(func(c echo.Context) error {
userstate.AddUser("bob", "hunter1", "*****@*****.**")
return c.String(http.StatusOK, fmt.Sprintf("User bob was created: %v\n", userstate.HasUser("bob")))
}))
e.Get("/confirm", echo.HandlerFunc(func(c echo.Context) error {
userstate.MarkConfirmed("bob")
return c.String(http.StatusOK, fmt.Sprintf("User bob was confirmed: %v\n", userstate.IsConfirmed("bob")))
}))
e.Get("/remove", echo.HandlerFunc(func(c echo.Context) error {
userstate.RemoveUser("bob")
return c.String(http.StatusOK, fmt.Sprintf("User bob was removed: %v\n", !userstate.HasUser("bob")))
}))
e.Get("/login", echo.HandlerFunc(func(c echo.Context) error {
// Headers will be written, for storing a cookie
userstate.Login(w(c), "bob")
return c.String(http.StatusOK, fmt.Sprintf("bob is now logged in: %v\n", userstate.IsLoggedIn("bob")))
}))
e.Get("/logout", echo.HandlerFunc(func(c echo.Context) error {
userstate.Logout("bob")
return c.String(http.StatusOK, fmt.Sprintf("bob is now logged out: %v\n", !userstate.IsLoggedIn("bob")))
}))
e.Get("/makeadmin", echo.HandlerFunc(func(c echo.Context) error {
userstate.SetAdminStatus("bob")
return c.String(http.StatusOK, fmt.Sprintf("bob is now administrator: %v\n", userstate.IsAdmin("bob")))
}))
e.Get("/clear", echo.HandlerFunc(func(c echo.Context) error {
userstate.ClearCookie(w(c))
return c.String(http.StatusOK, "Clearing cookie")
}))
e.Get("/data", echo.HandlerFunc(func(c echo.Context) error {
return c.String(http.StatusOK, "user page that only logged in users must see!")
}))
e.Get("/admin", echo.HandlerFunc(func(c echo.Context) error {
var buf bytes.Buffer
buf.WriteString("super secret information that only logged in administrators must see!\n\n")
if usernames, err := userstate.AllUsernames(); err == nil {
buf.WriteString("list of all users: " + strings.Join(usernames, ", "))
}
return c.String(http.StatusOK, buf.String())
}))
// Serve
e.Run(standard.New(":3000"))
}
func main() {
// New permissions middleware
perm, err := permissionHSTORE.New()
if err != nil {
log.Fatalln(err)
}
// Blank slate, no default permissions
//perm.Clear()
// Get the userstate, used in the handlers below
userstate := perm.UserState()
goji.Get("/", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "Has user bob: %v\n", userstate.HasUser("bob"))
fmt.Fprintf(w, "Logged in on server: %v\n", userstate.IsLoggedIn("bob"))
fmt.Fprintf(w, "Is confirmed: %v\n", userstate.IsConfirmed("bob"))
fmt.Fprintf(w, "Username stored in cookies (or blank): %v\n", userstate.Username(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *user rights*: %v\n", userstate.UserRights(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *admin rights*: %v\n", userstate.AdminRights(req))
fmt.Fprintf(w, "\nTry: /register, /confirm, /remove, /login, /logout, /makeadmin, /clear, /data and /admin")
})
goji.Get("/register", func(w http.ResponseWriter, req *http.Request) {
userstate.AddUser("bob", "hunter1", "*****@*****.**")
fmt.Fprintf(w, "User bob was created: %v\n", userstate.HasUser("bob"))
})
goji.Get("/confirm", func(w http.ResponseWriter, req *http.Request) {
userstate.MarkConfirmed("bob")
fmt.Fprintf(w, "User bob was confirmed: %v\n", userstate.IsConfirmed("bob"))
})
goji.Get("/remove", func(w http.ResponseWriter, req *http.Request) {
userstate.RemoveUser("bob")
fmt.Fprintf(w, "User bob was removed: %v\n", !userstate.HasUser("bob"))
})
goji.Get("/login", func(w http.ResponseWriter, req *http.Request) {
userstate.Login(w, "bob")
fmt.Fprintf(w, "bob is now logged in: %v\n", userstate.IsLoggedIn("bob"))
})
goji.Get("/logout", func(w http.ResponseWriter, req *http.Request) {
userstate.Logout("bob")
fmt.Fprintf(w, "bob is now logged out: %v\n", !userstate.IsLoggedIn("bob"))
})
goji.Get("/makeadmin", func(w http.ResponseWriter, req *http.Request) {
userstate.SetAdminStatus("bob")
fmt.Fprintf(w, "bob is now administrator: %v\n", userstate.IsAdmin("bob"))
})
goji.Get("/clear", func(w http.ResponseWriter, req *http.Request) {
userstate.ClearCookie(w)
fmt.Fprintf(w, "Clearing cookie")
})
goji.Get("/data", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "user page that only logged in users must see!")
})
goji.Get("/admin", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "super secret information that only logged in administrators must see!\n\n")
if usernames, err := userstate.AllUsernames(); err == nil {
fmt.Fprintf(w, "list of all users: "+strings.Join(usernames, ", "))
}
})
// Custom "permissions denied" message
perm.SetDenyFunction(func(w http.ResponseWriter, req *http.Request) {
http.Error(w, "Permission denied!", http.StatusForbidden)
})
// Permissions middleware for Goji
permissionHandler := func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
// Check if the user has the right admin/user rights
if perm.Rejected(w, req) {
// Deny the request
perm.DenyFunction()(w, req)
return
}
// Serve the requested page
next.ServeHTTP(w, req)
})
}
// Enable the permissions middleware
goji.Use(permissionHandler)
// Goji will listen to port 8000 by default
goji.Serve()
}
func main() {
n := negroni.Classic()
mux := http.NewServeMux()
// New permissions middleware
perm, err := permissionHSTORE.New()
if err != nil {
log.Fatalln(err)
}
// Blank slate, no default permissions
//perm.Clear()
// Get the userstate, used in the handlers below
userstate := perm.UserState()
mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "Has user bob: %v\n", userstate.HasUser("bob"))
fmt.Fprintf(w, "Logged in on server: %v\n", userstate.IsLoggedIn("bob"))
fmt.Fprintf(w, "Is confirmed: %v\n", userstate.IsConfirmed("bob"))
fmt.Fprintf(w, "Username stored in cookies (or blank): %v\n", userstate.Username(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *user rights*: %v\n", userstate.UserRights(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *admin rights*: %v\n", userstate.AdminRights(req))
fmt.Fprintf(w, "\nTry: /register, /confirm, /remove, /login, /logout, /makeadmin, /clear, /data and /admin")
})
mux.HandleFunc("/register", func(w http.ResponseWriter, req *http.Request) {
userstate.AddUser("bob", "hunter1", "*****@*****.**")
fmt.Fprintf(w, "User bob was created: %v\n", userstate.HasUser("bob"))
})
mux.HandleFunc("/confirm", func(w http.ResponseWriter, req *http.Request) {
userstate.MarkConfirmed("bob")
fmt.Fprintf(w, "User bob was confirmed: %v\n", userstate.IsConfirmed("bob"))
})
mux.HandleFunc("/remove", func(w http.ResponseWriter, req *http.Request) {
userstate.RemoveUser("bob")
fmt.Fprintf(w, "User bob was removed: %v\n", !userstate.HasUser("bob"))
})
mux.HandleFunc("/login", func(w http.ResponseWriter, req *http.Request) {
userstate.Login(w, "bob")
fmt.Fprintf(w, "bob is now logged in: %v\n", userstate.IsLoggedIn("bob"))
})
mux.HandleFunc("/logout", func(w http.ResponseWriter, req *http.Request) {
userstate.Logout("bob")
fmt.Fprintf(w, "bob is now logged out: %v\n", !userstate.IsLoggedIn("bob"))
})
mux.HandleFunc("/makeadmin", func(w http.ResponseWriter, req *http.Request) {
userstate.SetAdminStatus("bob")
fmt.Fprintf(w, "bob is now administrator: %v\n", userstate.IsAdmin("bob"))
})
mux.HandleFunc("/clear", func(w http.ResponseWriter, req *http.Request) {
userstate.ClearCookie(w)
fmt.Fprintf(w, "Clearing cookie")
})
mux.HandleFunc("/data", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "user page that only logged in users must see!")
})
mux.HandleFunc("/admin", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "super secret information that only logged in administrators must see!\n\n")
if usernames, err := userstate.AllUsernames(); err == nil {
fmt.Fprintf(w, "list of all users: "+strings.Join(usernames, ", "))
}
})
// Custom handler for when permissions are denied
perm.SetDenyFunction(func(w http.ResponseWriter, req *http.Request) {
http.Error(w, "Permission denied!", http.StatusForbidden)
})
// Enable the permissions middleware
n.Use(perm)
// Use mux for routing, this goes last
n.UseHandler(mux)
// Serve
n.Run(":3000")
}
func main() {
mux := http.NewServeMux()
// New permissionHSTORE middleware
perm, err := permissionHSTORE.New()
if err != nil {
log.Fatal("Could not open Bolt database")
}
// Blank slate, no default permissions
//perm.Clear()
// Get the userstate, used in the handlers below
userstate := perm.UserState()
mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "Has user bob: %v\n", userstate.HasUser("bob"))
fmt.Fprintf(w, "Logged in on server: %v\n", userstate.IsLoggedIn("bob"))
fmt.Fprintf(w, "Is confirmed: %v\n", userstate.IsConfirmed("bob"))
fmt.Fprintf(w, "Username stored in cookies (or blank): %v\n", userstate.Username(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *user rights*: %v\n", userstate.UserRights(req))
fmt.Fprintf(w, "Current user is logged in, has a valid cookie and *admin rights*: %v\n", userstate.AdminRights(req))
fmt.Fprintf(w, "\nTry: /register, /confirm, /remove, /login, /logout, /makeadmin, /clear, /data and /admin")
})
mux.HandleFunc("/register", func(w http.ResponseWriter, req *http.Request) {
userstate.AddUser("bob", "hunter1", "*****@*****.**")
fmt.Fprintf(w, "User bob was created: %v\n", userstate.HasUser("bob"))
})
mux.HandleFunc("/confirm", func(w http.ResponseWriter, req *http.Request) {
userstate.MarkConfirmed("bob")
fmt.Fprintf(w, "User bob was confirmed: %v\n", userstate.IsConfirmed("bob"))
})
mux.HandleFunc("/remove", func(w http.ResponseWriter, req *http.Request) {
userstate.RemoveUser("bob")
fmt.Fprintf(w, "User bob was removed: %v\n", !userstate.HasUser("bob"))
})
mux.HandleFunc("/login", func(w http.ResponseWriter, req *http.Request) {
userstate.Login(w, "bob")
fmt.Fprintf(w, "bob is now logged in: %v\n", userstate.IsLoggedIn("bob"))
})
mux.HandleFunc("/logout", func(w http.ResponseWriter, req *http.Request) {
userstate.Logout("bob")
fmt.Fprintf(w, "bob is now logged out: %v\n", !userstate.IsLoggedIn("bob"))
})
mux.HandleFunc("/makeadmin", func(w http.ResponseWriter, req *http.Request) {
userstate.SetAdminStatus("bob")
fmt.Fprintf(w, "bob is now administrator: %v\n", userstate.IsAdmin("bob"))
})
mux.HandleFunc("/clear", func(w http.ResponseWriter, req *http.Request) {
userstate.ClearCookie(w)
fmt.Fprintf(w, "Clearing cookie")
})
mux.HandleFunc("/data", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "user page that only logged in users must see!")
})
mux.HandleFunc("/admin", func(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "super secret information that only logged in administrators must see!\n\n")
if usernames, err := userstate.AllUsernames(); err == nil {
fmt.Fprintf(w, "list of all users: "+strings.Join(usernames, ", "))
}
})
// Custom handler for when permissions are denied
perm.SetDenyFunction(func(w http.ResponseWriter, req *http.Request) {
http.Error(w, "Permission denied!", http.StatusForbidden)
})
// Configure the HTTP server and permissionHandler struct
s := &http.Server{
Addr: ":3000",
Handler: &permissionHandler{perm, mux},
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 20,
}
log.Println("Listening for requests on port 3000")
// Start listening
s.ListenAndServe()
}