New basic auth middleware and GetRaw on User (godocs missing)

_examples/auth/basicauth/main.go

@@ -1,8 +1,6 @@
 package main
 
 import (
-	"time"
-
 	"github.com/kataras/iris/v12"
 	"github.com/kataras/iris/v12/middleware/basicauth"
 )
@@ -10,25 +8,40 @@ import (
 func newApp() *iris.Application {
 	app := iris.New()
 
-	authConfig := basicauth.Config{
+	/*
-		Users:   map[string]string{"myusername": "mypassword", "mySecondusername": "mySecondpassword"},
+		opts := basicauth.Options{
-		Realm:   "Authorization Required", // defaults to "Authorization Required"
+			Realm:  "Authorization Required",
-		Expires: time.Duration(30) * time.Minute,
+			MaxAge: 30 * time.Minute,
+			GC: basicauth.GC{
+				Every: 2 * time.Hour,
+			},
+			Allow: basicauth.AllowUsers(map[string]string{
+				"myusername":       "mypassword",
+				"mySecondusername": "mySecondpassword",
+			}),
+			MaxTries: 2,
 		}
+		auth := basicauth.New(opts)
 
-	authentication := basicauth.New(authConfig)
+		OR simply:
+	*/
 
-	// to global app.Use(authentication) (or app.UseGlobal before the .Run)
+	auth := basicauth.Default(map[string]string{
+		"myusername":       "mypassword",
+		"mySecondusername": "mySecondpassword",
+	})
+
+	// to global app.Use(auth) (or app.UseGlobal before the .Run)
 	// to routes
 	/*
-		app.Get("/mysecret", authentication, h)
+		app.Get("/mysecret", auth, h)
 	*/
 
 	app.Get("/", func(ctx iris.Context) { ctx.Redirect("/admin") })
 
 	// to party
 
-	needAuth := app.Party("/admin", authentication)
+	needAuth := app.Party("/admin", auth)
 	{
 		//http://localhost:8080/admin
 		needAuth.Get("/", h)

_examples/auth/basicauth/main_test.go

@@ -25,5 +25,5 @@ func TestBasicAuth(t *testing.T) {
 
 	// with invalid basic auth
 	e.GET("/admin/settings").WithBasicAuth("invalidusername", "invalidpassword").
-		Expect().Status(httptest.StatusUnauthorized)
+		Expect().Status(httptest.StatusForbidden)
 }

_examples/auth/jwt/tutorial/go.mod

@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/google/uuid v1.1.2
-	github.com/kataras/iris/v12 v12.2.0-alpha.0.20201106220849-7a19cfb2112f
+	github.com/kataras/iris/v12 v12.2.0-alpha.0.20201113181155-4d09475c290d
 	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
 )
 

_examples/routing/rewrite/main.go

@@ -17,7 +17,7 @@ func main() {
 
 	newtest := app.Subdomain("newtest")
 	newtest.Get("/", newTestIndex)
-	newtest.Get("/", newTestAbout)
+	newtest.Get("/about", newTestAbout)
 
 	redirects := rewrite.Load("redirects.yml")
 	app.WrapRouter(redirects)
@@ -25,14 +25,13 @@ func main() {
 	// http://mydomain.com:8080/seo/about       -> http://www.mydomain.com:8080/about
 	// http://test.mydomain.com:8080            -> http://newtest.mydomain.com:8080
 	// http://test.mydomain.com:8080/seo/about  -> http://newtest.mydomain.com:8080/about
-	// http://localhost:8080/seo               -> http://localhost:8080
+	// http://mydomain.com:8080/seo             -> http://www.mydomain.com:8080
-	// http://localhost:8080/about
+	// http://mydomain.com:8080/about
-	// http://localhost:8080/docs/v12/hello    -> http://localhost:8080/docs
+	// http://mydomain.com:8080/docs/v12/hello  -> http://www.mydomain.com:8080/docs
-	// http://localhost:8080/docs/v12some      -> http://localhost:8080/docs
+	// http://mydomain.com:8080/docs/v12some    -> http://www.mydomain.com:8080/docs
-	// http://localhost:8080/oldsome           -> http://localhost:8080
+	// http://mydomain.com:8080/oldsome         -> http://www.mydomain.com:8080
-	// http://localhost:8080/oldindex/random   -> http://localhost:8080
+	// http://mydomain.com:8080/oldindex/random -> http://www.mydomain.com:8080
-	// http://localhost:8080/users.json        -> http://localhost:8080/users.json
+	// http://mydomain.com:8080/users.json      -> http://www.mydomain.com:8080/users?format=json
-	//					 ^ (but with an internal ?format=json, client can't see it)
 	app.Listen(":8080")
 }
 

context/context.go

@@ -4726,7 +4726,7 @@ func (ctx *Context) UpsertCookie(cookie *http.Cookie, options ...CookieOption) b
 // you can change it or simple, use the SetCookie for more control.
 //
 // See `CookieExpires` and `AddCookieOptions` for more.
-var SetCookieKVExpiration = time.Duration(8760) * time.Hour
+var SetCookieKVExpiration = 8760 * time.Hour
 
 // SetCookieKV adds a cookie, requires the name(string) and the value(string).
 //
@@ -5343,7 +5343,15 @@ const userContextKey = "iris.user"
 // SetUser sets a value as a User for this request.
 // It's used by auth middlewares as a common
 // method to provide user information to the
-// next handlers in the chain
+// next handlers in the chain.
+//
+// The "i" input argument can be:
+// - A value which completes the User interface
+// - A map[string]interface{}.
+// - A value which does not complete the whole User interface
+// - A value which does not complete the User interface at all
+//   (only its `User().GetRaw` method is available).
+//
 // Look the `User` method to retrieve it.
 func (ctx *Context) SetUser(i interface{}) error {
 	if i == nil {
@@ -5371,6 +5379,9 @@ func (ctx *Context) SetUser(i interface{}) error {
 }
 
 // User returns the registered User of this request.
+// To get the original value (even if a value set by SetUser does not implement the User interface)
+// use its GetRaw method.
+// /
 // See `SetUser` too.
 func (ctx *Context) User() User {
 	if v := ctx.values.Get(userContextKey); v != nil {

context/context_user.go

@@ -33,6 +33,8 @@ var ErrNotSupported = errors.New("not supported")
 // - UserMap (a wrapper by SetUser)
 // - UserPartial (a wrapper by SetUser)
 type User interface {
+	// GetRaw should return the raw instance of the user, if supported.
+	GetRaw() (interface{}, error)
 	// GetAuthorization should return the authorization method,
 	// e.g. Basic Authentication.
 	GetAuthorization() (string, error)
@@ -92,6 +94,11 @@ type SimpleUser struct {
 
 var _ User = (*SimpleUser)(nil)
 
+// GetRaw returns itself.
+func (u *SimpleUser) GetRaw() (interface{}, error) {
+	return u, nil
+}
+
 // GetAuthorization returns the authorization method,
 // e.g. Basic Authentication.
 func (u *SimpleUser) GetAuthorization() (string, error) {
@@ -179,6 +186,11 @@ type UserMap Map
 
 var _ User = UserMap{}
 
+// GetRaw returns the underline map.
+func (u UserMap) GetRaw() (interface{}, error) {
+	return Map(u), nil
+}
+
 // GetAuthorization returns the authorization or Authorization value of the map.
 func (u UserMap) GetAuthorization() (string, error) {
 	return u.str("authorization")
@@ -292,11 +304,17 @@ type (
 		GetID() string
 	}
 
-	userGetUsername interface {
+	// UserGetUsername interface which
+	// requires a single method to complete
+	// a User on Context.SetUser.
+	UserGetUsername interface {
 		GetUsername() string
 	}
 
-	userGetPassword interface {
+	// UserGetPassword interface which
+	// requires a single method to complete
+	// a User on Context.SetUser.
+	UserGetPassword interface {
 		GetPassword() string
 	}
 
@@ -319,13 +337,14 @@ type (
 	// UserPartial is a User.
 	// It's a helper which wraps a struct value that
 	// may or may not complete the whole User interface.
+	// See Context.SetUser.
 	UserPartial struct {
 		Raw interface{}
 		userGetAuthorization
 		userGetAuthorizedAt
 		userGetID
-		userGetUsername
+		UserGetUsername
-		userGetPassword
+		UserGetPassword
 		userGetEmail
 		userGetRoles
 		userGetToken
@@ -336,61 +355,64 @@ type (
 var _ User = (*UserPartial)(nil)
 
 func newUserPartial(i interface{}) *UserPartial {
-	containsAtLeastOneMethod := false
+	if i == nil {
+		return nil
+	}
+
 	p := &UserPartial{Raw: i}
 
 	if u, ok := i.(userGetAuthorization); ok {
 		p.userGetAuthorization = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetAuthorizedAt); ok {
 		p.userGetAuthorizedAt = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetID); ok {
 		p.userGetID = u
-		containsAtLeastOneMethod = true
 	}
 
-	if u, ok := i.(userGetUsername); ok {
+	if u, ok := i.(UserGetUsername); ok {
-		p.userGetUsername = u
+		p.UserGetUsername = u
-		containsAtLeastOneMethod = true
 	}
 
-	if u, ok := i.(userGetPassword); ok {
+	if u, ok := i.(UserGetPassword); ok {
-		p.userGetPassword = u
+		p.UserGetPassword = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetEmail); ok {
 		p.userGetEmail = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetRoles); ok {
 		p.userGetRoles = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetToken); ok {
 		p.userGetToken = u
-		containsAtLeastOneMethod = true
 	}
 
 	if u, ok := i.(userGetField); ok {
 		p.userGetField = u
-		containsAtLeastOneMethod = true
 	}
 
-	if !containsAtLeastOneMethod {
+	// if !containsAtLeastOneMethod {
-		return nil
+	// 	return nil
-	}
+	// }
 
 	return p
 }
 
+// GetRaw returns the original raw instance of the user.
+func (u *UserPartial) GetRaw() (interface{}, error) {
+	if u == nil {
+		return nil, ErrNotSupported
+	}
+
+	return u.Raw, nil
+}
+
 // GetAuthorization should return the authorization method,
 // e.g. Basic Authentication.
 func (u *UserPartial) GetAuthorization() (string, error) {
@@ -422,7 +444,7 @@ func (u *UserPartial) GetID() (string, error) {
 
 // GetUsername should return the name of the User.
 func (u *UserPartial) GetUsername() (string, error) {
-	if v := u.userGetUsername; v != nil {
+	if v := u.UserGetUsername; v != nil {
 		return v.GetUsername(), nil
 	}
 
@@ -432,7 +454,7 @@ func (u *UserPartial) GetUsername() (string, error) {
 // GetPassword should return the encoded or raw password
 // (depends on the implementation) of the User.
 func (u *UserPartial) GetPassword() (string, error) {
-	if v := u.userGetPassword; v != nil {
+	if v := u.UserGetPassword; v != nil {
 		return v.GetPassword(), nil
 	}
 

middleware/basicauth/basicauth.go

@@ -1,205 +1,402 @@
-// Package basicauth provides http basic authentication via middleware. See _examples/auth/basicauth
 package basicauth
 
-/*
-Test files:
-	- ../../_examples/auth/basicauth/main_test.go
-	- ./basicauth_test.go
-*/
-
 import (
-	"encoding/base64"
+	stdContext "context"
 	"strconv"
 	"sync"
 	"time"
 
 	"github.com/kataras/iris/v12/context"
+	"github.com/kataras/iris/v12/sessions"
 )
 
 func init() {
 	context.SetHandlerName("iris/middleware/basicauth.*", "iris.basicauth")
 }
 
-const authorizationType = "Basic Authentication"
+const (
-
+	DefaultRealm          = "Authorization Required"
-type (
+	DefaultMaxTriesCookie = "basicmaxtries"
-	encodedUser struct {
-		HeaderValue  string
-		Username     string
-		Password     string
-		logged       bool
-		forceLogout  bool      // in order to be able to invalidate and use a redirect response.
-		authorizedAt time.Time // when from !logged to logged.
-		expires      time.Time
-		mu           sync.RWMutex
-	}
-
-	basicAuthMiddleware struct {
-		config *Config
-		// these are filled from the config.Users map at the startup
-		auth             []*encodedUser
-		realmHeaderValue string
-
-		// The below can be removed but they are here because on the future we may add dynamic options for those two fields,
-		// it is a bit faster to check the b.$bool as well.
-		expireEnabled     bool // if the config.Expires is a valid date, default is disabled.
-		askHandlerEnabled bool // if the config.OnAsk is not nil, defaults to false.
-	}
 )
 
+const (
+	authorizationType           = "Basic Authentication"
+	authenticateHeaderKey       = "WWW-Authenticate"
+	proxyAuthenticateHeaderKey  = "Proxy-Authenticate"
+	authorizationHeaderKey      = "Authorization"
+	proxyAuthorizationHeaderKey = "Proxy-Authorization"
+)
+
+type AuthFunc func(ctx *context.Context, username, password string) (interface{}, bool)
+
+type Options struct {
+	// Realm http://tools.ietf.org/html/rfc2617#section-1.2.
+	// E.g. "Authorization Required".
+	Realm string
+	// In the case of proxies, the challenging status code is 407 (Proxy Authentication Required),
+	// the Proxy-Authenticate response header contains at least one challenge applicable to the proxy,
+	// and the Proxy-Authorization request header is used for providing the credentials to the proxy server.
+	//
+	// Proxy should be used to gain access to a resource behind a proxy server.
+	// It authenticates the request to the proxy server, allowing it to transmit the request further.
+	Proxy bool
+	// Usage:
+	//  - Allow: AllowUsers(iris.Map{"username": "...", "password": "...", "other_field": ...}, [BCRYPT])
+	//  - Allow: AllowUsersFile("users.yml", [BCRYPT])
+	Allow AuthFunc
+	// If greater than zero then the server will send 403 forbidden status code afer MaxTries
+	// of invalid credentials of a specific client consumed (session or cookie based, see MaxTriesCookie).
+	// By default the server will re-ask for credentials on any amount of invalid credentials.
+	MaxTries int
+	// If a session manager is register under the current request,
+	// then this value should be the key of the session storage which
+	// the current tries will be stored. Otherwise
+	// it is the raw cookie name.
+	// The cookie is stored up to the configured MaxAge if greater than zero or for 1 year,
+	// so a forbidden client can request for authentication again after the MaxAge expired.
+	//
+	// Note that, the session way is recommended as the current tries
+	// cannot be modified by the client (unless the client removes the session cookie).
+	// However the raw cookie performs faster. You can always set custom logic
+	// on the Allow field as you have access to the current request Context.
+	// To set custom cookie options use the `Context.AddCookieOptions(options ...iris.CookieOption)`
+	// before the basic auth middleware.
+	//
+	// If MaxTries > 0 then it defaults to "basicmaxtries".
+	// The MaxTries should be set to greater than zero.
+	MaxTriesCookie string
+	// If not nil runs after 401 (or 407 if proxy is enabled) status code.
+	// Can be used to set custom response for unauthenticated clients.
+	OnAsk context.Handler
+	// If not nil runs after the 403 forbidden status code (when Allow returned false and MaxTries consumed).
+	// Can be used to set custom response when client tried to access a resource with invalid credentials.
+	OnForbidden context.Handler
+	// MaxAge sets expiration duration for the in-memory credentials map.
+	// By default an old map entry will be removed when the user visits a page.
+	// In order to remove old entries automatically please take a look at the `GC` option too.
+	//
+	// Usage:
+	//  MaxAge: 30*time.Minute
+	MaxAge time.Duration
+	// GC automatically clears old entries every x duration.
+	// Note that, by old entries we mean expired credentials therefore
+	// the `MaxAge` option should be already set,
+	// if it's not then all entries will be removed on "every" duration.
+	// The standard context can be used for the internal ticker cancelation, it can be nil.
+	//
+	// Usage:
+	//  GC: basicauth.GC{Every: 2*time.Hour}
+	GC GC
+}
+
+type GC struct {
+	Context stdContext.Context
+	Every   time.Duration
+}
+
+// https://tools.ietf.org/html/rfc2617
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Authentication
 //
+// As the user ID and password are passed over the network as clear text
+// (it is base64 encoded, but base64 is a reversible encoding), the basic authentication scheme is not secure.
+// HTTPS/TLS should be used with basic authentication. Without these additional security enhancements,
+// basic authentication should not be used to protect sensitive or valuable information.
+type BasicAuth struct {
+	opts Options
+	// built based on proxy field
+	askCode             int
+	authorizationHeader string
+	authenticateHeader  string
+	// built based on realm field.
+	authenticateHeaderValue string
 
-// New accepts basicauth.Config and returns a new Handler
+	credentials map[string]*time.Time // key = username:password, value = expiration time (if MaxAge > 0).
-// which will ask the client for basic auth (username, password),
+	mu          sync.RWMutex          // protects the credentials as they can modified.
-// validate that and if valid continues to the next handler, otherwise
-// throws a StatusUnauthorized http error code.
-//
-// Use the `Context.User` method to retrieve the stored user.
-func New(c Config) context.Handler {
-	config := DefaultConfig()
-	if c.Realm != "" {
-		config.Realm = c.Realm
-	}
-	config.Users = c.Users
-	config.Expires = c.Expires
-	config.OnAsk = c.OnAsk
-
-	b := &basicAuthMiddleware{config: &config}
-	b.init()
-	return b.Serve
 }
 
-// Default accepts only the users and returns a new Handler
+func New(opts Options) context.Handler {
-// which will ask the client for basic auth (username, password),
+	var (
-// validate that and if valid continues to the next handler, otherwise
+		askCode                 = 401
-// throws a StatusUnauthorized http error code.
+		authorizationHeader     = authorizationHeaderKey
-func Default(users map[string]string) context.Handler {
+		authenticateHeader      = authenticateHeaderKey
-	c := DefaultConfig()
+		authenticateHeaderValue = "Basic"
-	c.Users = users
+	)
-	return New(c)
+
+	if opts.Allow == nil {
+		panic("BasicAuth: Allow field is required")
+	}
+
+	if opts.Realm != "" {
+		authenticateHeaderValue += " realm=" + strconv.Quote(opts.Realm)
+	}
+
+	if opts.Proxy {
+		askCode = 407
+		authenticateHeader = proxyAuthenticateHeaderKey
+		authorizationHeader = proxyAuthorizationHeaderKey
+	}
+
+	if opts.MaxTries > 0 && opts.MaxTriesCookie == "" {
+		opts.MaxTriesCookie = DefaultMaxTriesCookie
+	}
+
+	b := &BasicAuth{
+		opts:                    opts,
+		askCode:                 askCode,
+		authorizationHeader:     authorizationHeader,
+		authenticateHeader:      authenticateHeader,
+		authenticateHeaderValue: authenticateHeaderValue,
+		credentials:             make(map[string]*time.Time),
+	}
+
+	if opts.GC.Every > 0 {
+		go b.runGC(opts.GC.Context, opts.GC.Every)
+	}
+
+	return b.serveHTTP
 }
 
-func (b *basicAuthMiddleware) init() {
+// - map[string]string form of: {username:password, ...} form.
-	// pass the encoded users from the user's config's Users value
+// - map[string]interface{} form of: []{"username": "...", "password": "...", "other_field": ...}, ...}.
-	b.auth = make([]*encodedUser, 0, len(b.config.Users))
+// - []T which T completes the User interface.
-
+// - []T which T contains at least Username and Password fields.
-	for k, v := range b.config.Users {
+func Default(users interface{}, userOpts ...UserAuthOption) context.Handler {
-		fullUser := k + ":" + v
+	opts := Options{
-		header := "Basic " + base64.StdEncoding.EncodeToString([]byte(fullUser))
+		Realm: DefaultRealm,
-		b.auth = append(b.auth, &encodedUser{
+		Allow: AllowUsers(users, userOpts...),
-			HeaderValue: header,
-			Username:    k,
-			Password:    v,
-			logged:      false,
-			expires:     DefaultExpireTime,
-		})
 	}
-
+	return New(opts)
-	// set the auth realm header's value
-	b.realmHeaderValue = "Basic realm=" + strconv.Quote(b.config.Realm)
-
-	b.expireEnabled = b.config.Expires > 0
-	b.askHandlerEnabled = b.config.OnAsk != nil
 }
 
-func (b *basicAuthMiddleware) findAuth(headerValue string) (*encodedUser, bool) {
+func Load(jsonOrYamlFilename string, userOpts ...UserAuthOption) context.Handler {
-	if headerValue != "" {
+	opts := Options{
-		for _, user := range b.auth {
+		Realm: DefaultRealm,
-			if user.HeaderValue == headerValue {
+		Allow: AllowUsersFile(jsonOrYamlFilename, userOpts...),
-				return user, true
 	}
-		}
+	return New(opts)
-	}
-
-	return nil, false
 }
 
-func (b *basicAuthMiddleware) askForCredentials(ctx *context.Context) {
+// askForCredentials sends a response to the client which client should catch
-	ctx.Header("WWW-Authenticate", b.realmHeaderValue)
+// and ask for username:password credentials.
-	ctx.StatusCode(401)
+func (b *BasicAuth) askForCredentials(ctx *context.Context) {
-	if b.askHandlerEnabled {
+	ctx.Header(b.authenticateHeader, b.authenticateHeaderValue)
-		b.config.OnAsk(ctx)
+	ctx.StopWithStatus(b.askCode)
+
+	if h := b.opts.OnAsk; h != nil {
+		h(ctx)
 	}
 }
 
-// Serve the actual basic authentication middleware.
+// If a (proxy) server receives valid credentials that are inadequate to access a given resource,
-// Use the Context.User method to retrieve the stored user.
+// the server should respond with the 403 Forbidden status code.
-func (b *basicAuthMiddleware) Serve(ctx *context.Context) {
+// Unlike 401 Unauthorized or 407 Proxy Authentication Required, authentication is impossible for this user.
-	auth, found := b.findAuth(ctx.GetHeader("Authorization"))
+func (b *BasicAuth) forbidden(ctx *context.Context) {
-	if !found || auth.forceLogout {
+	ctx.StopWithStatus(403)
-		if auth != nil {
+
-			auth.mu.Lock()
+	if h := b.opts.OnForbidden; h != nil {
-			auth.forceLogout = false
+		h(ctx)
-			auth.mu.Unlock()
+	}
+}
+
+func (b *BasicAuth) getCurrentTries(ctx *context.Context) (tries int) {
+	sess := sessions.Get(ctx)
+	if sess != nil {
+		tries = sess.GetIntDefault(b.opts.MaxTriesCookie, 0)
+	} else {
+		if v := ctx.GetCookie(b.opts.MaxTriesCookie); v != "" {
+			tries, _ = strconv.Atoi(v)
+		}
+	}
+
+	return
+}
+
+func (b *BasicAuth) setCurrentTries(ctx *context.Context, tries int) {
+	sess := sessions.Get(ctx)
+	if sess != nil {
+		sess.Set(b.opts.MaxTriesCookie, tries)
+	} else {
+		maxAge := b.opts.MaxAge
+		if maxAge == 0 {
+			maxAge = context.SetCookieKVExpiration // 1 year.
+		}
+		ctx.SetCookieKV(b.opts.MaxTriesCookie, strconv.Itoa(tries), context.CookieExpires(maxAge))
+	}
+}
+
+func (b *BasicAuth) resetCurrentTries(ctx *context.Context) {
+	sess := sessions.Get(ctx)
+	if sess != nil {
+		sess.Delete(b.opts.MaxTriesCookie)
+	} else {
+		ctx.RemoveCookie(b.opts.MaxTriesCookie)
+	}
+}
+
+// serveHTTP is the main method of this middleware,
+// checks and verifies the auhorization header for basic authentication,
+// next handlers will only be executed when the client is allowed to continue.
+func (b *BasicAuth) serveHTTP(ctx *context.Context) {
+	header := ctx.GetHeader(b.authorizationHeader)
+	fullUser, username, password, ok := decodeHeader(header)
+	if !ok { // Header is malformed or missing.
+		b.askForCredentials(ctx)
+		return
+	}
+
+	var (
+		maxTries = b.opts.MaxTries
+		tries    int
+	)
+
+	if maxTries > 0 {
+		tries = b.getCurrentTries(ctx)
+	}
+
+	user, ok := b.opts.Allow(ctx, username, password)
+	if !ok { // This username:password combination was not allowed.
+		if maxTries > 0 {
+			tries++
+			b.setCurrentTries(ctx, tries)
+			if tries >= maxTries { // e.g. if MaxTries == 1 then it should be allowed only once, so we must send forbidden now.
+				b.forbidden(ctx) // a user was forbidden, to reset its status should clear the Authorization header and cookie and request the resource again.
+				return
+			}
 		}
 
 		b.askForCredentials(ctx)
-		ctx.StopExecution()
-		return
-		// don't continue to the next handler
-	}
-
-	auth.mu.RLock()
-	logged := auth.logged
-	auth.mu.RUnlock()
-	if !logged {
-		auth.mu.Lock()
-		auth.authorizedAt = time.Now()
-		auth.mu.Unlock()
-	}
-
-	// all ok
-	if b.expireEnabled {
-		if !logged {
-			auth.mu.Lock()
-			auth.expires = auth.authorizedAt.Add(b.config.Expires)
-			auth.logged = true
-			auth.mu.Unlock()
-		}
-
-		auth.mu.RLock()
-		expired := time.Now().After(auth.expires)
-		auth.mu.RUnlock()
-		if expired {
-			auth.mu.Lock()
-			auth.logged = false
-			auth.forceLogout = false
-			auth.mu.Unlock()
-			b.askForCredentials(ctx) // ask for authentication again
-			ctx.StopExecution()
 		return
 	}
+
+	if tries > 0 {
+		// had failures but it's ok, reset the tries on success.
+		b.resetCurrentTries(ctx)
 	}
 
-	if !b.config.DisableContextUser {
+	b.mu.RLock()
-		ctx.SetLogoutFunc(b.Logout)
+	expiresAt, ok := b.credentials[fullUser]
+	b.mu.RUnlock()
+	var authorizedAt time.Time
+	if ok {
+		if expiresAt != nil { // Has expiration.
+			if expiresAt.Before(time.Now()) { // Has been expired.
+				b.mu.Lock() // Delete the entry.
+				delete(b.credentials, fullUser)
+				b.mu.Unlock()
+				// Re-ask for new credentials.
+				b.askForCredentials(ctx)
+				return
+			}
 
-		auth.mu.RLock()
+			// It's ok, find the time authorized to fill the user below, if necessary.
-		user := &context.SimpleUser{
+			authorizedAt = expiresAt.Add(-b.opts.MaxAge)
+		}
+	} else {
+		// Saved credential not found, first login.
+		if b.opts.MaxAge > 0 { // Expiration is enabled, set the value.
+			authorizedAt = time.Now()
+			t := authorizedAt.Add(b.opts.MaxAge)
+			expiresAt = &t
+		}
+		b.mu.Lock()
+		b.credentials[fullUser] = expiresAt
+		b.mu.Unlock()
+	}
+
+	if user == nil {
+		// No custom uset was set by the auth func,
+		// it is passed though, set a simple user here:
+		user = &context.SimpleUser{
 			Authorization: authorizationType,
-			AuthorizedAt:  auth.authorizedAt,
+			AuthorizedAt:  authorizedAt,
-			Username:      auth.Username,
+			Username:      username,
-			Password:      auth.Password,
+			Password:      password,
 		}
-		auth.mu.RUnlock()
+	}
+
 	ctx.SetUser(user)
-	}
+	ctx.SetLogoutFunc(b.logout)
 
-	ctx.Next() // continue
+	ctx.Next()
 }
 
-// Logout sends a 401 so the browser/client can invalidate the
+// logout clears the current user's credentials.
-// Basic Authentication and also sets the underline user's logged field to false,
+func (b *BasicAuth) logout(ctx *context.Context) {
-// so its expiration resets when re-ask for credentials.
+	var (
-//
+		fullUser, username, password string
-// End-developers should call the `Context.Logout()` method
+		ok                           bool
-// to fire this method as this structure is hidden.
+	)
-func (b *basicAuthMiddleware) Logout(ctx *context.Context) {
+
-	ctx.StatusCode(401)
+	if u := ctx.User(); u != nil { // Get the saved ones, if any.
-	if auth, found := b.findAuth(ctx.GetHeader("Authorization")); found {
+		username, _ = u.GetUsername()
-		auth.mu.Lock()
+		password, _ = u.GetPassword()
-		auth.logged = false
+		fullUser = username + colonLiteral + password
-		auth.forceLogout = true
+		ok = username != "" && password != ""
-		auth.mu.Unlock()
+	}
+
+	if !ok {
+		// If the custom user does
+		// not implement those two, then extract from the request header:
+		header := ctx.GetHeader(b.authorizationHeader)
+		fullUser, username, password, ok = decodeHeader(header)
+	}
+
+	if ok { // If it's authorized then try to lock and delete.
+		if b.opts.Proxy {
+			ctx.Request().Header.Del(proxyAuthorizationHeaderKey)
+		}
+		// delete the request header so future Request().BasicAuth are empty.
+		ctx.Request().Header.Del(authorizationHeaderKey)
+
+		b.mu.Lock()
+		delete(b.credentials, fullUser)
+		b.mu.Unlock()
 	}
 }
+
+// runGC runs a function in a separate go routine
+// every x duration to clear in-memory expired credential entries.
+func (b *BasicAuth) runGC(ctx stdContext.Context, every time.Duration) {
+	if ctx == nil {
+		ctx = stdContext.Background()
+	}
+
+	t := time.NewTicker(every)
+	defer t.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			b.gc()
+		}
+	}
+}
+
+// gc removes all entries expired based on the max age or all entries (if max age is missing).
+func (b *BasicAuth) gc() int {
+	now := time.Now()
+	var markedForDeletion []string
+
+	b.mu.RLock()
+	for fullUser, expiresAt := range b.credentials {
+		if expiresAt == nil {
+			markedForDeletion = append(markedForDeletion, fullUser)
+		} else if expiresAt.Before(now) {
+			markedForDeletion = append(markedForDeletion, fullUser)
+		}
+	}
+	b.mu.RUnlock()
+
+	n := len(markedForDeletion)
+	if n > 0 {
+		for _, fullUser := range markedForDeletion {
+			b.mu.Lock()
+			delete(b.credentials, fullUser)
+			b.mu.Unlock()
+		}
+	}
+
+	return n
+}

middleware/basicauth/basicauth_test.go

@@ -8,7 +8,7 @@ import (
 
 	"github.com/kataras/iris/v12"
 	"github.com/kataras/iris/v12/httptest"
-	"github.com/kataras/iris/v12/middleware/basicauth"
+	basicauth "github.com/kataras/iris/v12/middleware/basicauth"
 )
 
 func TestBasicAuthUseRouter(t *testing.T) {
@@ -18,7 +18,13 @@ func TestBasicAuthUseRouter(t *testing.T) {
 		"admin": "admin",
 	}
 
-	app.UseRouter(basicauth.Default(users))
+	auth := basicauth.New(basicauth.Options{
+		Allow:    basicauth.AllowUsers(users),
+		Realm:    basicauth.DefaultRealm,
+		MaxTries: 1,
+	})
+
+	app.UseRouter(auth)
 
 	app.Get("/user_json", func(ctx iris.Context) {
 		ctx.JSON(ctx.User())
@@ -80,9 +86,9 @@ func TestBasicAuthUseRouter(t *testing.T) {
 		e.GET("/").Expect().Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
 		// Test invalid auth.
 		e.GET("/").WithBasicAuth(username, "invalid_password").Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 		e.GET("/").WithBasicAuth("invaid_username", password).Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 
 		// Test different method, it should pass the authentication (no stop on 401)
 		// but it doesn't fire the GET route, instead it gives 405.
@@ -97,9 +103,9 @@ func TestBasicAuthUseRouter(t *testing.T) {
 		e.GET("/notfound").Expect().Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
 		// Test invalid auth.
 		e.GET("/notfound").WithBasicAuth(username, "invalid_password").Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 		e.GET("/notfound").WithBasicAuth("invaid_username", password).Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 
 		// Test subdomain inherited.
 		sub := e.Builder(func(req *httptest.Request) {
@@ -114,9 +120,9 @@ func TestBasicAuthUseRouter(t *testing.T) {
 		sub.GET("/").Expect().Status(httptest.StatusUnauthorized)
 		// Test invalid auth.
 		sub.GET("/").WithBasicAuth(username, "invalid_password").Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 		sub.GET("/").WithBasicAuth("invaid_username", password).Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 
 		// Test pass the authentication but route not found.
 		sub.GET("/notfound").WithBasicAuth(username, password).Expect().
@@ -126,9 +132,9 @@ func TestBasicAuthUseRouter(t *testing.T) {
 		sub.GET("/notfound").Expect().Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
 		// Test invalid auth.
 		sub.GET("/notfound").WithBasicAuth(username, "invalid_password").Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 		sub.GET("/notfound").WithBasicAuth("invaid_username", password).Expect().
-			Status(httptest.StatusUnauthorized).Body().Equal("Unauthorized")
+			Status(httptest.StatusForbidden)
 
 		// Test a reset-ed Party with a single one UseRouter
 		// which writes on matched routes and reset and send the error on errors.

middleware/basicauth/config.go

@@ -1,59 +0,0 @@
-package basicauth
-
-import (
-	"time"
-
-	"github.com/kataras/iris/v12/context"
-)
-
-const (
-	// DefaultBasicAuthRealm is "Authorization Required"
-	DefaultBasicAuthRealm = "Authorization Required"
-)
-
-// DefaultExpireTime zero time
-var DefaultExpireTime time.Time // 0001-01-01 00:00:00 +0000 UTC
-
-// Config the configs for the basicauth middleware
-type Config struct {
-	// Users a map of login and the value (username/password)
-	Users map[string]string
-	// Realm http://tools.ietf.org/html/rfc2617#section-1.2. Default is "Authorization Required"
-	Realm string
-	// Expires expiration duration, default is 0 never expires.
-	Expires time.Duration
-
-	// OnAsk fires each time the server asks to the client for credentials in order to gain access and continue to the next handler.
-	//
-	// You could also ignore this option and
-	// - just add a listener for unauthorized status codes with:
-	// `app.OnErrorCode(iris.StatusUnauthorized, unauthorizedWantsAccessHandler)`
-	// - or register a middleware which will force `ctx.Next/or direct call`
-	// the basicauth middleware and check its `ctx.GetStatusCode()`.
-	//
-	// However, this option is very useful when you want the framework to fire a handler
-	// ONLY when the Basic Authentication sends an `iris.StatusUnauthorized`,
-	// and free the error code listener to catch other types of unauthorized access, i.e Kerberos.
-	// Also with this one, not recommended at all but, you are able to "force-allow" other users by calling the `ctx.StatusCode` inside this handler;
-	// i.e when it is possible to create authorized users dynamically but
-	// if that is the case then you should go with something like sessions instead of basic authentication.
-	//
-	// Usage: basicauth.New(basicauth.Config{..., OnAsk: unauthorizedWantsAccessViaBasicAuthHandler})
-	//
-	// Defaults to nil.
-	OnAsk context.Handler
-
-	// DisableContextUser disables the registration of the custom basicauth Context.Logout
-	// and the User.
-	DisableContextUser bool
-}
-
-// DefaultConfig returns the default configs for the BasicAuth middleware
-func DefaultConfig() Config {
-	return Config{make(map[string]string), DefaultBasicAuthRealm, 0, nil, false}
-}
-
-// User returns the user from context key same as  ctx.Request().BasicAuth().
-func (c Config) User(ctx *context.Context) (string, string, bool) {
-	return ctx.Request().BasicAuth()
-}

middleware/basicauth/header.go

@@ -0,0 +1,88 @@
+package basicauth
+
+import (
+	"encoding/base64"
+	"strings"
+)
+
+const (
+	spaceChar            = ' '
+	colonChar            = ':'
+	colonLiteral         = string(colonChar)
+	basicLiteral         = "Basic"
+	basicSpaceLiteral    = "Basic "
+	basicSpaceLiteralLen = len(basicSpaceLiteral)
+)
+
+// The username and password are combined with a single colon (:).
+// This means that the username itself cannot contain a colon.
+// URL encoding (e.g. https://Aladdin:OpenSesame@www.example.com/index.html)
+// has been deprecated by rfc3986.
+func encodeHeader(username, password string) (string, bool) {
+	if strings.Contains(username, colonLiteral) || strings.Contains(password, colonLiteral) {
+		return "", false
+	}
+	fullUser := []byte(username + colonLiteral + password)
+	header := basicSpaceLiteral + base64.StdEncoding.EncodeToString(fullUser)
+
+	return header, true
+}
+
+// Like net/http.parseBasicAuth
+func decodeHeader(header string) (fullUser, username, password string, ok bool) {
+	if len(header) < basicSpaceLiteralLen || !strings.EqualFold(header[:basicSpaceLiteralLen], basicSpaceLiteral) {
+		return
+	}
+
+	c, err := base64.StdEncoding.DecodeString(header[basicSpaceLiteralLen:])
+	if err != nil {
+		return
+	}
+
+	cs := string(c)
+	s := strings.IndexByte(cs, colonChar)
+	if s < 0 {
+		return
+	}
+	return cs, cs[:s], cs[s+1:], true
+
+	/*
+		for i := 0; i < n; i++ {
+			if header[i] == spaceChar {
+				prefix := header[:i]
+				if prefix != basicLiteral {
+					return
+				}
+
+				if n <= i+1 {
+					return
+				}
+
+				decodedFullUser, err := base64.RawStdEncoding.DecodeString(header[i+1:])
+				if err != nil {
+					return
+				}
+
+				fullUser = string(decodedFullUser)
+				break
+			}
+		}
+
+		n = len(fullUser)
+		for i := n - 1; i > -1; i-- {
+			if fullUser[i] == colonChar {
+				username = fullUser[:i]
+				password = fullUser[i+1:]
+
+				if strings.TrimSpace(username) == "" || strings.TrimSpace(password) == "" {
+					ok = false
+				} else {
+					ok = true
+				}
+
+				return
+			}
+		}
+
+		return*/
+}

middleware/basicauth/header_test.go

@@ -0,0 +1,103 @@
+package basicauth
+
+import "testing"
+
+func TestHeaderEncode(t *testing.T) {
+	var tests = []struct {
+		username string
+		password string
+		header   string
+		ok       bool
+	}{
+		{
+			username: "user",
+			password: "pass",
+			header:   "Basic dXNlcjpwYXNz",
+			ok:       true,
+		},
+		{
+			username: "user",
+			password: "p:(notallowed)ass",
+			header:   "",
+			ok:       false,
+		},
+		{
+			username: "123u%ser",
+			password: "pass132$",
+			header:   "Basic MTIzdSVzZXI6cGFzczEzMiQ=",
+			ok:       true,
+		},
+	}
+
+	for i, tt := range tests {
+		got, ok := encodeHeader(tt.username, tt.password)
+		if tt.ok != ok {
+			t.Fatalf("[%d] expected: %v but got: %v (username=%s,password=%s)", i, tt.ok, ok, tt.username, tt.password)
+		}
+		if tt.header != got {
+			t.Fatalf("[%d] expected result header: %q but got: %q", i, tt.header, got)
+		}
+	}
+}
+
+func TestHeaderDecode(t *testing.T) {
+	var tests = []struct {
+		header   string
+		ok       bool
+		username string
+		password string
+	}{
+		{
+			header:   "Basic dXNlcjpwYXNz",
+			ok:       true,
+			username: "user",
+			password: "pass",
+		},
+		{
+			header: "dXNlcjpwYXNz",
+			ok:     false,
+		},
+		{
+			header: "Basic ",
+			ok:     false,
+		},
+		{
+			header: "Basic dXNlcjp",
+			ok:     false,
+		},
+		{
+			header: "dXNlcjpwYXNz Basic",
+			ok:     false,
+		},
+		{
+			header: "dXNlcjpwYXNzBasic",
+			ok:     false,
+		},
+	}
+
+	for i, tt := range tests {
+		fullUser, username, password, ok := decodeHeader(tt.header)
+		if expected, got := tt.ok, ok; expected != got {
+			t.Fatalf("[%d] expected: %v but got: %v (header=%s)", i, expected, got, tt.header)
+		}
+
+		if expected, got := tt.username, username; expected != got {
+			t.Fatalf("[%d] expected username: %q but got: %q", i, expected, got)
+		}
+
+		if expected, got := tt.password, password; expected != got {
+			t.Fatalf("[%d] expected password: %q but got: %q", i, expected, got)
+		}
+
+		if tt.username != "" || tt.password != "" {
+			if expected, got := tt.username+colonLiteral+tt.password, fullUser; expected != got {
+				t.Fatalf("[%d] expected username:password to be: %q but got: %q", i, expected, got)
+			}
+		} else {
+			if fullUser != "" {
+				t.Fatalf("[%d] expected username:password to be empty but got: %q", i, fullUser)
+			}
+		}
+
+	}
+}

middleware/basicauth/user_auth.go

@@ -0,0 +1,256 @@
+package basicauth
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"reflect"
+	"strings"
+
+	"github.com/kataras/iris/v12/context"
+	"golang.org/x/crypto/bcrypt"
+	"gopkg.in/yaml.v3"
+)
+
+type UserAuthOptions struct {
+	// Defaults to plain check, can be modified for encrypted passwords, see `BCRYPT`.
+	ComparePassword func(stored, userPassword string) bool
+}
+
+type UserAuthOption func(*UserAuthOptions)
+
+func BCRYPT(opts *UserAuthOptions) {
+	opts.ComparePassword = func(stored, userPassword string) bool {
+		err := bcrypt.CompareHashAndPassword([]byte(stored), []byte(userPassword))
+		return err == nil
+	}
+}
+
+func toUserAuthOptions(opts []UserAuthOption) (options UserAuthOptions) {
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	if options.ComparePassword == nil {
+		options.ComparePassword = func(stored, userPassword string) bool {
+			return stored == userPassword
+		}
+	}
+
+	return options
+}
+
+type User interface {
+	context.UserGetUsername
+	context.UserGetPassword
+}
+
+// Users
+// - map[string]string form of: {username:password, ...} form.
+// - map[string]interface{} form of: []{"username": "...", "password": "...", "other_field": ...}, ...}.
+// - []T which T completes the User interface.
+// - []T which T contains at least Username and Password fields.
+func AllowUsers(users interface{}, opts ...UserAuthOption) AuthFunc {
+	// create a local user structure to be used in the map copy,
+	// takes longer to initialize but faster to serve.
+	type user struct {
+		password string
+		ref      interface{}
+	}
+	cp := make(map[string]*user)
+
+	v := reflect.Indirect(reflect.ValueOf(users))
+	switch v.Kind() {
+	case reflect.Slice:
+		for i := 0; i < v.Len(); i++ {
+			elem := v.Index(i).Interface()
+			// MUST contain a username and password.
+			username, password, ok := extractUsernameAndPassword(elem)
+			if !ok {
+				continue
+			}
+
+			cp[username] = &user{
+				password: password,
+				ref:      elem,
+			}
+		}
+	case reflect.Map:
+		elem := v.Interface()
+		switch m := elem.(type) {
+		case map[string]string:
+			return userMap(m, opts...)
+		case map[string]interface{}:
+			username, password, ok := mapUsernameAndPassword(m)
+			if !ok {
+				break
+			}
+
+			cp[username] = &user{
+				password: password,
+				ref:      m,
+			}
+		default:
+			panic(fmt.Sprintf("unsupported type of map: %T", users))
+		}
+	default:
+		panic(fmt.Sprintf("unsupported type: %T", users))
+	}
+
+	options := toUserAuthOptions(opts)
+
+	return func(_ *context.Context, username, password string) (interface{}, bool) {
+		if u, ok := cp[username]; ok { // fast map access,
+			if options.ComparePassword(u.password, password) {
+				return u.ref, true
+			}
+		}
+
+		return nil, false
+	}
+}
+
+func userMap(usernamePassword map[string]string, opts ...UserAuthOption) AuthFunc {
+	options := toUserAuthOptions(opts)
+
+	return func(_ *context.Context, username, password string) (interface{}, bool) {
+		pass, ok := usernamePassword[username]
+		return nil, ok && options.ComparePassword(pass, password)
+	}
+}
+
+func AllowUsersFile(jsonOrYamlFilename string, opts ...UserAuthOption) AuthFunc {
+	var (
+		usernamePassword map[string]string
+		// no need to support too much forms, this would be for:
+		// "$username": { "password": "$pass", "other_field": ...}
+		// users            map[string]map[string]interface{}
+		userList []map[string]interface{}
+	)
+
+	if err := decodeFile(jsonOrYamlFilename, &usernamePassword, &userList); err != nil {
+		panic(err)
+	}
+
+	if len(usernamePassword) > 0 {
+		// JSON Form: { "$username":"$pass", "$username": "$pass" }
+		// YAML Form: $username: $pass
+		// 			  $username: $pass
+		return userMap(usernamePassword, opts...)
+	}
+
+	if len(userList) > 0 {
+		// JSON Form: [{"username": "$username", "password": "$pass", "other_field": ...}, {"username": ...}, ... ]
+		// YAML Form:
+		// - username: $username
+		//   password: $password
+		//   other_field: ...
+		return AllowUsers(userList, opts...)
+	}
+
+	panic("malformed document file: " + jsonOrYamlFilename)
+}
+
+func decodeFile(src string, dest ...interface{}) error {
+	data, err := ioutil.ReadFile(src)
+	if err != nil {
+		return err
+	}
+
+	// We use unmarshal instead of file decoder
+	// as we may need to read it more than once (dests, see below).
+	var (
+		unmarshal func(data []byte, v interface{}) error
+		ext       string
+	)
+
+	if idx := strings.LastIndexByte(src, '.'); idx > 0 {
+		ext = src[idx:]
+	}
+
+	switch ext {
+	case "", ".json":
+		unmarshal = json.Unmarshal
+	case ".yml", ".yaml":
+		unmarshal = yaml.Unmarshal
+	default:
+		return fmt.Errorf("unexpected file extension: %s", ext)
+	}
+
+	var (
+		ok      bool
+		lastErr error
+	)
+
+	for _, d := range dest {
+		if err = unmarshal(data, d); err == nil {
+			ok = true
+		} else {
+			lastErr = err
+		}
+	}
+
+	if !ok {
+		return lastErr
+	}
+
+	return nil // if at least one is succeed we are ok.
+}
+
+func extractUsernameAndPassword(s interface{}) (username, password string, ok bool) {
+	if s == nil {
+		return
+	}
+
+	switch u := s.(type) {
+	case User:
+		username = u.GetUsername()
+		password = u.GetPassword()
+		ok = username != "" && password != ""
+		return
+	case map[string]interface{}:
+		return mapUsernameAndPassword(u)
+	default:
+		b, err := json.Marshal(u)
+		if err != nil {
+			return
+		}
+
+		var m map[string]interface{}
+		if err = json.Unmarshal(b, &m); err != nil {
+			return
+		}
+
+		return mapUsernameAndPassword(m)
+	}
+}
+
+func mapUsernameAndPassword(m map[string]interface{}) (username, password string, ok bool) {
+	// type of username: password.
+	if len(m) == 1 {
+		for username, v := range m {
+			if password, ok := v.(string); ok {
+				ok := username != "" && password != ""
+				return username, password, ok
+			}
+		}
+	}
+
+	var usernameFound, passwordFound bool
+
+	for k, v := range m {
+		switch k {
+		case "username", "Username":
+			username, usernameFound = v.(string)
+		case "password", "Password":
+			password, passwordFound = v.(string)
+		}
+
+		if usernameFound && passwordFound {
+			ok = true
+			break
+		}
+	}
+
+	return
+}

middleware/basicauth/user_auth_test.go

@@ -0,0 +1,287 @@
+package basicauth
+
+import (
+	"errors"
+	"io/ioutil"
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/kataras/iris/v12/context"
+
+	"golang.org/x/crypto/bcrypt"
+	"gopkg.in/yaml.v3"
+)
+
+type IUserRepository interface {
+	GetByUsernameAndPassword(dest interface{}, username, password string) error
+}
+
+// Test a custom implementation of AuthFunc with a user repository.
+// This is a usage example of custom AuthFunc implementation.
+func UserRepository(repo IUserRepository, newUserPtr func() interface{}) AuthFunc {
+	return func(ctx *context.Context, username, password string) (interface{}, bool) {
+		dest := newUserPtr()
+		err := repo.GetByUsernameAndPassword(dest, username, password)
+		if err == nil {
+			return dest, true
+		}
+
+		return nil, false
+	}
+}
+
+type testUser struct {
+	username string
+	password string
+	email    string // custom field.
+}
+
+// GetUsername & Getpassword complete the User interface (optional but useful on Context.User()).
+func (u *testUser) GetUsername() string {
+	return u.username
+}
+
+func (u *testUser) GetPassword() string {
+	return u.password
+}
+
+type testRepo struct {
+	entries []testUser
+}
+
+// Implements IUserRepository interface.
+func (r *testRepo) GetByUsernameAndPassword(dest interface{}, username, password string) error {
+	for _, e := range r.entries {
+		if e.username == username && e.password == password {
+			*dest.(*testUser) = e
+			return nil
+		}
+	}
+
+	return errors.New("invalid credentials")
+}
+
+func TestAllowUserRepository(t *testing.T) {
+	repo := &testRepo{
+		entries: []testUser{
+			{username: "kataras", password: "kataras_pass", email: "kataras2006@hotmail.com"},
+		},
+	}
+
+	allow := UserRepository(repo, func() interface{} {
+		return new(testUser)
+	})
+
+	var tests = []struct {
+		username string
+		password string
+		ok       bool
+		user     *testUser
+	}{
+		{
+			username: "kataras",
+			password: "kataras_pass",
+			ok:       true,
+			user:     &testUser{username: "kataras", password: "kataras_pass", email: "kataras2006@hotmail.com"},
+		},
+		{
+			username: "makis",
+			password: "makis_password",
+			ok:       false,
+		},
+	}
+
+	for i, tt := range tests {
+		v, ok := allow(nil, tt.username, tt.password)
+
+		if tt.ok != ok {
+			t.Fatalf("[%d] expected: %v but got: %v (username=%s,password=%s)", i, tt.ok, ok, tt.username, tt.password)
+		}
+
+		if !ok {
+			continue
+		}
+
+		u, ok := v.(*testUser)
+		if !ok {
+			t.Fatalf("[%d] a user should be type of *testUser but got: %#+v (%T)", i, v, v)
+		}
+
+		if !reflect.DeepEqual(tt.user, u) {
+			t.Fatalf("[%d] expected user:\n%#+v\nbut got:\n%#+v", i, tt.user, u)
+		}
+	}
+}
+
+func TestAllowUsers(t *testing.T) {
+	users := []User{
+		&testUser{username: "kataras", password: "kataras_pass", email: "kataras2006@hotmail.com"},
+	}
+
+	allow := AllowUsers(users)
+
+	var tests = []struct {
+		username string
+		password string
+		ok       bool
+		user     *testUser
+	}{
+		{
+			username: "kataras",
+			password: "kataras_pass",
+			ok:       true,
+			user:     &testUser{username: "kataras", password: "kataras_pass", email: "kataras2006@hotmail.com"},
+		},
+		{
+			username: "makis",
+			password: "makis_password",
+			ok:       false,
+		},
+	}
+
+	for i, tt := range tests {
+		v, ok := allow(nil, tt.username, tt.password)
+
+		if tt.ok != ok {
+			t.Fatalf("[%d] expected: %v but got: %v (username=%s,password=%s)", i, tt.ok, ok, tt.username, tt.password)
+		}
+
+		if !ok {
+			continue
+		}
+
+		u, ok := v.(*testUser)
+		if !ok {
+			t.Fatalf("[%d] a user should be type of *testUser but got: %#+v (%T)", i, v, v)
+		}
+
+		if !reflect.DeepEqual(tt.user, u) {
+			t.Fatalf("[%d] expected user:\n%#+v\nbut got:\n%#+v", i, tt.user, u)
+		}
+	}
+}
+
+// Test YAML user loading with b-encrypted passwords.
+func TestAllowUsersFile(t *testing.T) {
+	f, err := ioutil.TempFile("", "*users.yml")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		f.Close()
+		os.Remove(f.Name())
+	}()
+
+	// 	f.WriteString(`
+	// - username: kataras
+	//   password: kataras_pass
+	//   age: 27
+	//   role: admin
+	// - username: makis
+	//   password: makis_password
+	// `)
+	// This form is supported too, although its features are limited (no custom fields):
+	// 	f.WriteString(`
+	// kataras: kataras_pass
+	// makis: makis_password
+	// `)
+
+	var tests = []struct {
+		username      string
+		password      string // hashed, auto-filled later on.
+		inputPassword string
+		ok            bool
+		user          context.Map
+	}{
+		{
+			username:      "kataras",
+			inputPassword: "kataras_pass",
+			ok:            true,
+			user:          context.Map{"age": 27, "role": "admin"}, // username and password are auto-filled in our tests below.
+		},
+		{
+			username:      "makis",
+			inputPassword: "makis_password",
+			ok:            true,
+			user:          context.Map{},
+		},
+		{
+			username: "invalid",
+			password: "invalid_pass",
+			ok:       false,
+		},
+		{
+			username: "notvalid",
+			password: "",
+			ok:       false,
+		},
+	}
+
+	// Write the tests to the users YAML file.
+	var usersToWrite []context.Map
+	for _, tt := range tests {
+		if tt.ok {
+			// store the hashed password.
+			tt.password = mustGeneratePassword(t, tt.inputPassword)
+			// store and write the username and hashed password.
+			tt.user["username"] = tt.username
+			tt.user["password"] = tt.password
+
+			// cannot write it as a stream, write it as a slice.
+			// enc.Encode(tt.user)
+			usersToWrite = append(usersToWrite, tt.user)
+		}
+		// 	bcrypt.GenerateFromPassword([]byte("kataras_pass"), bcrypt.DefaultCost)
+	}
+
+	fileContents, err := yaml.Marshal(usersToWrite)
+	if err != nil {
+		t.Fatal(err)
+	}
+	f.Write(fileContents)
+
+	// Build the authentication func.
+	allow := AllowUsersFile(f.Name(), BCRYPT)
+	for i, tt := range tests {
+		v, ok := allow(nil, tt.username, tt.inputPassword)
+
+		if tt.ok != ok {
+			t.Fatalf("[%d] expected: %v but got: %v (username=%s,password=%s,user=%#+v)", i, tt.ok, ok, tt.username, tt.inputPassword, v)
+		}
+
+		if !ok {
+			continue
+		}
+
+		if len(tt.user) == 0 { // when username: password form.
+			continue
+		}
+
+		u, ok := v.(context.Map)
+		if !ok {
+			t.Fatalf("[%d] a user loaded from external source or file should be alway type of map[string]interface{} but got: %#+v (%T)", i, v, v)
+		}
+
+		if expected, got := len(tt.user), len(u); expected != got {
+			t.Fatalf("[%d] expected user map length to be equal, expected: %d but got: %d\n%#+v\n%#+v", i, expected, got, tt.user, u)
+		}
+
+		for k, v := range tt.user {
+			if u[k] != v {
+				t.Fatalf("[%d] expected user map %q to be %q but got: %q", i, k, v, u[k])
+			}
+		}
+	}
+
+}
+
+func mustGeneratePassword(t *testing.T, userPassword string) string {
+	t.Helper()
+	hashed, err := bcrypt.GenerateFromPassword([]byte(userPassword), bcrypt.DefaultCost)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return string(hashed)
+}