tests: fix tests

internal/bootstrap/app_bootstrap.go

@@ -34,6 +34,7 @@ type Services struct {
 	ldapService          *service.LdapService
 	oauthBrokerService   *service.OAuthBrokerService
 	oidcService          *service.OIDCService
+	policyEngine         *service.PolicyEngine
 }
 
 type BootstrapApp struct {

internal/bootstrap/router_bootstrap.go

@@ -44,7 +44,7 @@ func (app *BootstrapApp) setupRouter() error {
 	controller.NewContextController(app.log, app.config, app.runtime, apiRouter)
 	controller.NewOAuthController(app.log, app.config, app.runtime, apiRouter, app.services.authService)
 	controller.NewOIDCController(app.log, app.services.oidcService, app.runtime, apiRouter)
-	controller.NewProxyController(app.log, app.runtime, apiRouter, app.services.accessControlService, app.services.authService)
+	controller.NewProxyController(app.log, app.runtime, apiRouter, app.services.accessControlService, app.services.authService, app.services.policyEngine)
 	controller.NewUserController(app.log, app.runtime, apiRouter, app.services.authService)
 	controller.NewResourcesController(app.config, &engine.RouterGroup)
 	controller.NewHealthController(apiRouter)

internal/bootstrap/service_bootstrap.go

@@ -16,38 +16,21 @@ func (app *BootstrapApp) setupServices() error {
 
 	app.services.ldapService = ldapService
 
-	useKubernetes := app.config.LabelProvider == "kubernetes" ||
-		(app.config.LabelProvider == "auto" && os.Getenv("KUBERNETES_SERVICE_HOST") != "")
-
-	var labelProvider service.LabelProvider
-
-	if useKubernetes {
-		app.log.App.Debug().Msg("Using Kubernetes label provider")
-
-		kubernetesService, err := service.NewKubernetesService(app.log, app.ctx, &app.wg)
+	labelProvider, err := app.getLabelProvider()
 
 	if err != nil {
-			return fmt.Errorf("failed to initialize kubernetes service: %w", err)
+		return fmt.Errorf("failed to initialize label provider: %w", err)
 	}
 
-		app.services.kubernetesService = kubernetesService
-		labelProvider = kubernetesService
-	} else {
-		app.log.App.Debug().Msg("Using Docker label provider")
-
-		dockerService, err := service.NewDockerService(app.log, app.ctx, &app.wg)
-
-		if err != nil {
-			return fmt.Errorf("failed to initialize docker service: %w", err)
-		}
-
-		app.services.dockerService = dockerService
-		labelProvider = dockerService
-	}
-
-	accessControlsService := service.NewAccessControlsService(app.log, &labelProvider, app.config.Apps)
+	accessControlsService := service.NewAccessControlsService(app.log, app.config, &labelProvider)
 	app.services.accessControlService = accessControlsService
 
+	err = app.setupPolicyEngine()
+
+	if err != nil {
+		return fmt.Errorf("failed to initialize policy engine: %w", err)
+	}
+
 	oauthBrokerService := service.NewOAuthBrokerService(app.log, app.runtime.OAuthProviders, app.ctx)
 	app.services.oauthBrokerService = oauthBrokerService
 
@@ -64,3 +47,67 @@ func (app *BootstrapApp) setupServices() error {
 
 	return nil
 }
+
+func (app *BootstrapApp) getLabelProvider() (service.LabelProvider, error) {
+	if app.config.LabelProvider == "none" {
+		return nil, nil
+	}
+
+	useKubernetes := app.config.LabelProvider == "kubernetes" ||
+		(app.config.LabelProvider == "auto" && os.Getenv("KUBERNETES_SERVICE_HOST") != "")
+
+	if useKubernetes {
+		app.log.App.Debug().Msg("Using Kubernetes label provider")
+
+		kubernetesService, err := service.NewKubernetesService(app.log, app.ctx, &app.wg)
+
+		if err != nil {
+			return nil, fmt.Errorf("failed to initialize kubernetes service: %w", err)
+		}
+
+		app.services.kubernetesService = kubernetesService
+		return kubernetesService, nil
+	}
+
+	app.log.App.Debug().Msg("Using Docker label provider")
+
+	dockerService, err := service.NewDockerService(app.log, app.ctx, &app.wg)
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize docker service: %w", err)
+	}
+
+	app.services.dockerService = dockerService
+	return dockerService, nil
+}
+
+func (app *BootstrapApp) setupPolicyEngine() error {
+	policyEngine, err := service.NewPolicyEngine(app.config, app.log)
+
+	if err != nil {
+		return fmt.Errorf("failed to initialize policy engine: %w", err)
+	}
+
+	policyEngine.RegisterRule(service.RuleUserAllowed, &service.UserAllowedRule{
+		Log: app.log,
+	})
+	policyEngine.RegisterRule(service.RuleOAuthGroup, &service.OAuthGroupRule{
+		Log: app.log,
+	})
+	policyEngine.RegisterRule(service.RuleLDAPGroup, &service.LDAPGroupRule{
+		Log: app.log,
+	})
+	policyEngine.RegisterRule(service.RuleAuthEnabled, &service.AuthEnabledRule{
+		Log: app.log,
+	})
+	policyEngine.RegisterRule(service.RuleIPAllowed, &service.IPAllowedRule{
+		Log:    app.log,
+		Config: app.config,
+	})
+	policyEngine.RegisterRule(service.RuleIPBypassed, &service.IPBypassedRule{
+		Log: app.log,
+	})
+
+	app.services.policyEngine = policyEngine
+	return nil
+}

internal/controller/proxy_controller.go

@@ -3,6 +3,7 @@ package controller
 import (
 	"errors"
 	"fmt"
+	"net"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -55,6 +56,7 @@ type ProxyController struct {
 	runtime      model.RuntimeConfig
 	acls         *service.AccessControlsService
 	auth         *service.AuthService
+	policyEngine *service.PolicyEngine
 }
 
 func NewProxyController(
@@ -63,12 +65,14 @@ func NewProxyController(
 	router *gin.RouterGroup,
 	acls *service.AccessControlsService,
 	auth *service.AuthService,
+	policyEngine *service.PolicyEngine,
 ) *ProxyController {
 	controller := &ProxyController{
 		log:          log,
 		runtime:      runtime,
 		acls:         acls,
 		auth:         auth,
+		policyEngine: policyEngine,
 	}
 
 	proxyGroup := router.Group("/auth")
@@ -101,7 +105,13 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 
 	clientIP := c.ClientIP()
 
-	if controller.auth.IsBypassedIP(clientIP, acls) {
+	aclsCtx := &service.ACLContext{
+		ACLs: acls,
+		IP:   net.ParseIP(clientIP),
+		Path: proxyCtx.Path,
+	}
+
+	if controller.policyEngine.Evaluate(service.RuleIPBypassed, aclsCtx) {
 		controller.setHeaders(c, acls)
 		c.JSON(200, gin.H{
 			"status":  200,
@@ -110,15 +120,7 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 		return
 	}
 
-	authEnabled, err := controller.auth.IsAuthEnabled(proxyCtx.Path, acls)
-
-	if err != nil {
-		controller.log.App.Error().Err(err).Msg("Failed to determine if authentication is enabled for resource")
-		controller.handleError(c, proxyCtx)
-		return
-	}
-
-	if !authEnabled {
+	if controller.policyEngine.Evaluate(service.RuleAuthEnabled, aclsCtx) {
 		controller.log.App.Debug().Msg("Authentication is disabled for this resource, allowing access without authentication")
 		controller.setHeaders(c, acls)
 		c.JSON(200, gin.H{
@@ -128,7 +130,7 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 		return
 	}
 
-	if !controller.auth.CheckIP(clientIP, acls) {
+	if !controller.policyEngine.Evaluate(service.RuleIPAllowed, aclsCtx) {
 		queries, err := query.Values(UnauthorizedQuery{
 			Resource: strings.Split(proxyCtx.Host, ".")[0],
 			IP:       clientIP,
@@ -164,10 +166,10 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 		}
 	}
 
-	if userContext.Authenticated {
-		userAllowed := controller.auth.IsUserAllowed(c, *userContext, acls)
+	aclsCtx.UserContext = userContext
 
-		if !userAllowed {
+	if userContext.Authenticated {
+		if !controller.policyEngine.Evaluate(service.RuleUserAllowed, aclsCtx) {
 			controller.log.App.Warn().Str("user", userContext.GetUsername()).Str("resource", strings.Split(proxyCtx.Host, ".")[0]).Msg("User is not allowed to access resource")
 
 			queries, err := query.Values(UnauthorizedQuery{
@@ -205,9 +207,9 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 			var groupOK bool
 
 			if userContext.IsOAuth() {
-				groupOK = controller.auth.IsInOAuthGroup(c, *userContext, acls)
+				groupOK = controller.policyEngine.Evaluate(service.RuleOAuthGroup, aclsCtx)
 			} else {
-				groupOK = controller.auth.IsInLDAPGroup(c, *userContext, acls)
+				groupOK = controller.policyEngine.Evaluate(service.RuleLDAPGroup, aclsCtx)
 			}
 
 			if !groupOK {

internal/controller/proxy_controller_test.go

@@ -24,33 +24,6 @@ func TestProxyController(t *testing.T) {
 
 	cfg, runtime := test.CreateTestConfigs(t)
 
-	acls := map[string]model.App{
-		"app_path_allow": {
-			Config: model.AppConfig{
-				Domain: "path-allow.example.com",
-			},
-			Path: model.AppPath{
-				Allow: "/allowed",
-			},
-		},
-		"app_user_allow": {
-			Config: model.AppConfig{
-				Domain: "user-allow.example.com",
-			},
-			Users: model.AppUsers{
-				Allow: "testuser",
-			},
-		},
-		"ip_bypass": {
-			Config: model.AppConfig{
-				Domain: "ip-bypass.example.com",
-			},
-			IP: model.AppIP{
-				Bypass: []string{"10.10.10.10"},
-			},
-		},
-	}
-
 	const browserUserAgent = `
 	Mozilla/5.0 (Linux; Android 8.0.0; SM-G955U Build/R16NW) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Mobile Safari/537.36`
 
@@ -391,7 +364,29 @@ func TestProxyController(t *testing.T) {
 
 	broker := service.NewOAuthBrokerService(log, map[string]model.OAuthServiceConfig{}, ctx)
 	authService := service.NewAuthService(log, cfg, runtime, ctx, wg, nil, queries, broker)
-	aclsService := service.NewAccessControlsService(log, nil, acls)
+	aclsService := service.NewAccessControlsService(log, cfg, nil)
+	policyEngine, err := service.NewPolicyEngine(cfg, log)
+	require.NoError(t, err)
+
+	policyEngine.RegisterRule(service.RuleUserAllowed, &service.UserAllowedRule{
+		Log: log,
+	})
+	policyEngine.RegisterRule(service.RuleOAuthGroup, &service.OAuthGroupRule{
+		Log: log,
+	})
+	policyEngine.RegisterRule(service.RuleLDAPGroup, &service.LDAPGroupRule{
+		Log: log,
+	})
+	policyEngine.RegisterRule(service.RuleAuthEnabled, &service.AuthEnabledRule{
+		Log: log,
+	})
+	policyEngine.RegisterRule(service.RuleIPAllowed, &service.IPAllowedRule{
+		Log:    log,
+		Config: cfg,
+	})
+	policyEngine.RegisterRule(service.RuleIPBypassed, &service.IPBypassedRule{
+		Log: log,
+	})
 
 	for _, test := range tests {
 		t.Run(test.description, func(t *testing.T) {
@@ -406,7 +401,7 @@ func TestProxyController(t *testing.T) {
 
 			recorder := httptest.NewRecorder()
 
-			controller.NewProxyController(log, runtime, group, aclsService, authService)
+			controller.NewProxyController(log, runtime, group, aclsService, authService, policyEngine)
 
 			test.run(t, router, recorder)
 		})

internal/model/config.go

@@ -24,6 +24,9 @@ func NewDefaultConfiguration() *Config {
 			SessionMaxLifetime: 0,     // disabled
 			LoginTimeout:       300,   // 5 minutes
 			LoginMaxRetries:    3,
+			ACLs: ACLsConfig{
+				Policy: "allow",
+			},
 		},
 		UI: UIConfig{
 			Title:                 "Tinyauth",
@@ -78,7 +81,7 @@ type Config struct {
 	UI            UIConfig           `description:"UI customization." yaml:"ui"`
 	LDAP          LDAPConfig         `description:"LDAP configuration." yaml:"ldap"`
 	Experimental  ExperimentalConfig `description:"Experimental features, use with caution." yaml:"experimental"`
-	LabelProvider string             `description:"Label provider to use for ACLs (auto, docker, or kubernetes). auto detects the environment." yaml:"labelProvider"`
+	LabelProvider string             `description:"Label provider to use for ACLs (auto, docker, kubernetes or none to disable). auto detects the environment." yaml:"labelProvider"`
 	Log           LogConfig          `description:"Logging configuration." yaml:"log"`
 }
 
@@ -114,6 +117,7 @@ type AuthConfig struct {
 	LoginTimeout       int                       `description:"Login timeout in seconds." yaml:"loginTimeout"`
 	LoginMaxRetries    int                       `description:"Maximum login retries." yaml:"loginMaxRetries"`
 	TrustedProxies     []string                  `description:"Comma-separated list of trusted proxy addresses." yaml:"trustedProxies"`
+	ACLs               ACLsConfig                `description:"ACLs configuration." yaml:"acls"`
 }
 
 type UserAttributes struct {
@@ -223,6 +227,10 @@ type OIDCClientConfig struct {
 	Name                string   `description:"Client name in UI." yaml:"name"`
 }
 
+type ACLsConfig struct {
+	Policy string `description:"ACL policy for allow-by-default or deny-by-default, available options are allow and deny, default is allow." yaml:"policy"`
+}
+
 // ACLs
 
 type Apps struct {

internal/service/access_control_rules_test.go

@@ -0,0 +1,702 @@
+package service
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tinyauthapp/tinyauth/internal/model"
+	"github.com/tinyauthapp/tinyauth/internal/utils/logger"
+)
+
+func TestUserAllowedRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	rule := &UserAllowedRule{Log: log}
+
+	tests := []struct {
+		name     string
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name: "abstains when ACLs are nil",
+			ctx: &ACLContext{
+				ACLs: nil,
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "allows OAuth user when email matches whitelist",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Whitelist: "allowed@example.com"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						BaseContext: model.BaseContext{
+							Username: "different-username",
+							Email:    "allowed@example.com",
+						},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies OAuth user when email does not match whitelist",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Whitelist: "allowed@example.com"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						BaseContext: model.BaseContext{Email: "denied@example.com"},
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "abstains for OAuth user when whitelist filter is invalid",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Whitelist: "/[/"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						BaseContext: model.BaseContext{Email: "allowed@example.com"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "denies local user when username matches block list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Block: "alice,bob"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows local user when username does not match block list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Block: "alice,bob"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "charlie"},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "abstains when block list filter is invalid",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Block: "/[/"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "allows local user when username matches allow list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Allow: "alice,bob"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies local user when username does not match allow list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Allow: "alice,bob"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "charlie"},
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "abstains when allow list filter is invalid",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Users: model.AppUsers{Allow: "/[/"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}
+
+func TestOAuthGroupRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	rule := &OAuthGroupRule{Log: log}
+
+	tests := []struct {
+		name     string
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name: "abstains when ACLs are nil",
+			ctx: &ACLContext{
+				ACLs: nil,
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						Groups: []string{"admins"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "abstains when user is not OAuth",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "allows when provider is an override provider regardless of groups",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						ID:     "google",
+						Groups: []string{"unrelated"},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "allows OAuth user when a group matches",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "admins,users"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						ID:     "custom",
+						Groups: []string{"users"},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies OAuth user when no group matches",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						ID:     "custom",
+						Groups: []string{"users", "guests"},
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies OAuth user when user has no groups",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						ID:     "custom",
+						Groups: nil,
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "abstains when groups filter is invalid",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					OAuth: model.AppOAuth{Groups: "/[/"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderOAuth,
+					OAuth: &model.OAuthContext{
+						ID:     "custom",
+						Groups: []string{"admins"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}
+
+func TestLDAPGroupRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	rule := &LDAPGroupRule{Log: log}
+
+	tests := []struct {
+		name     string
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name:     "abstains when context is nil",
+			ctx:      nil,
+			expected: EffectAbstain,
+		},
+		{
+			name: "abstains when user is not LDAP",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					LDAP: model.AppLDAP{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLocal,
+					Local: &model.LocalContext{
+						BaseContext: model.BaseContext{Username: "alice"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "allows LDAP user when a group matches",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					LDAP: model.AppLDAP{Groups: "admins,users"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLDAP,
+					LDAP: &model.LDAPContext{
+						Groups: []string{"users"},
+					},
+				},
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies LDAP user when no group matches",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					LDAP: model.AppLDAP{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLDAP,
+					LDAP: &model.LDAPContext{
+						Groups: []string{"users", "guests"},
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies LDAP user when user has no groups",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					LDAP: model.AppLDAP{Groups: "admins"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLDAP,
+					LDAP: &model.LDAPContext{
+						Groups: nil,
+					},
+				},
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "abstains when groups filter is invalid",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					LDAP: model.AppLDAP{Groups: "/[/"},
+				},
+				UserContext: &model.UserContext{
+					Provider: model.ProviderLDAP,
+					LDAP: &model.LDAPContext{
+						Groups: []string{"admins"},
+					},
+				},
+			},
+			expected: EffectAbstain,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}
+
+func TestAuthEnabledRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	rule := &AuthEnabledRule{Log: log}
+
+	tests := []struct {
+		name     string
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name: "deny when ACLs are nil",
+			ctx: &ACLContext{
+				ACLs: nil,
+				Path: "/anything",
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when path does not match block regex",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Block: "^/admin"},
+				},
+				Path: "/public",
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies when path matches block regex and no allow regex",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Block: "^/admin"},
+				},
+				Path: "/admin/users",
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when path matches allow regex",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Allow: "^/public"},
+				},
+				Path: "/public/index",
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies when path does not match allow regex",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Allow: "^/public"},
+				},
+				Path: "/private",
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when blocked path is also explicitly allowed",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{
+						Block: "^/admin",
+						Allow: "^/admin/public",
+					},
+				},
+				Path: "/admin/public/page",
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies when block regex fails to compile",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Block: "[invalid"},
+				},
+				Path: "/anything",
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies when allow regex fails to compile",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					Path: model.AppPath{Allow: "[invalid"},
+				},
+				Path: "/anything",
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies when no path rules are configured",
+			ctx: &ACLContext{
+				ACLs: &model.App{},
+				Path: "/anything",
+			},
+			expected: EffectDeny,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}
+
+func TestIPAllowedRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	tests := []struct {
+		name     string
+		config   model.Config
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name: "abstains when ACLs are nil",
+			ctx: &ACLContext{
+				ACLs: nil,
+				IP:   net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectAbstain,
+		},
+		{
+			name: "denies when IP matches app block list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Block: []string{"10.0.0.1"}},
+				},
+				IP: net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies when IP matches global block list",
+			config: model.Config{
+				Auth: model.AuthConfig{
+					IP: model.IPConfig{Block: []string{"10.0.0.0/24"}},
+				},
+			},
+			ctx: &ACLContext{
+				ACLs: &model.App{},
+				IP:   net.ParseIP("10.0.0.5"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when IP matches app allow list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Allow: []string{"192.168.1.0/24"}},
+				},
+				IP: net.ParseIP("192.168.1.10"),
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "allows when IP matches global allow list",
+			config: model.Config{
+				Auth: model.AuthConfig{
+					IP: model.IPConfig{Allow: []string{"192.168.1.10"}},
+				},
+			},
+			ctx: &ACLContext{
+				ACLs: &model.App{},
+				IP:   net.ParseIP("192.168.1.10"),
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies when allow list is set and IP does not match",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Allow: []string{"192.168.1.0/24"}},
+				},
+				IP: net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when no block or allow lists are configured",
+			ctx: &ACLContext{
+				ACLs: &model.App{},
+				IP:   net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "block list takes precedence over allow list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{
+						Block: []string{"10.0.0.1"},
+						Allow: []string{"10.0.0.1"},
+					},
+				},
+				IP: net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "skips invalid block entries and continues evaluation",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{
+						Block: []string{"not-an-ip"},
+						Allow: []string{"10.0.0.1"},
+					},
+				},
+				IP: net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectAllow,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			rule := &IPAllowedRule{Log: log, Config: tt.config}
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}
+
+func TestIPBypassedRule(t *testing.T) {
+	log := logger.NewLogger().WithTestConfig()
+	log.Init()
+
+	rule := &IPBypassedRule{Log: log}
+
+	tests := []struct {
+		name     string
+		ctx      *ACLContext
+		expected Effect
+	}{
+		{
+			name: "deny when ACLs are nil",
+			ctx: &ACLContext{
+				ACLs: nil,
+				IP:   net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "allows when IP matches bypass list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Bypass: []string{"10.0.0.0/24"}},
+				},
+				IP: net.ParseIP("10.0.0.5"),
+			},
+			expected: EffectAllow,
+		},
+		{
+			name: "denies when IP does not match bypass list",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Bypass: []string{"10.0.0.0/24"}},
+				},
+				IP: net.ParseIP("192.168.1.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "denies when bypass list is empty",
+			ctx: &ACLContext{
+				ACLs: &model.App{},
+				IP:   net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectDeny,
+		},
+		{
+			name: "skips invalid bypass entries and allows on later match",
+			ctx: &ACLContext{
+				ACLs: &model.App{
+					IP: model.AppIP{Bypass: []string{"not-an-ip", "10.0.0.1"}},
+				},
+				IP: net.ParseIP("10.0.0.1"),
+			},
+			expected: EffectAllow,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, rule.Evaluate(tt.ctx))
+		})
+	}
+}

internal/service/access_controls_rules.go

@@ -0,0 +1,249 @@
+package service
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/tinyauthapp/tinyauth/internal/model"
+	"github.com/tinyauthapp/tinyauth/internal/utils"
+	"github.com/tinyauthapp/tinyauth/internal/utils/logger"
+)
+
+type RuleName string
+
+const (
+	RuleUserAllowed RuleName = "rule-user-allowed"
+	RuleOAuthGroup  RuleName = "rule-oauth-group"
+	RuleLDAPGroup   RuleName = "rule-ldap-group"
+	RuleAuthEnabled RuleName = "rule-auth-enabled"
+	RuleIPAllowed   RuleName = "rule-ip-allowed"
+	RuleIPBypassed  RuleName = "rule-ip-bypassed"
+)
+
+type UserAllowedRule struct {
+	Log *logger.Logger
+}
+
+func (rule *UserAllowedRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx.ACLs == nil {
+		return EffectAbstain
+	}
+
+	if ctx.UserContext.Provider == model.ProviderOAuth {
+		rule.Log.App.Debug().Msg("User is an OAuth user, checking OAuth whitelist")
+		match, err := utils.CheckFilter(ctx.ACLs.OAuth.Whitelist, ctx.UserContext.OAuth.Email)
+		if err != nil {
+			rule.Log.App.Warn().Err(err).Str("item", ctx.UserContext.OAuth.Email).Msg("Invalid entry in OAuth whitelist")
+			return EffectAbstain
+		}
+		if match {
+			rule.Log.App.Debug().Str("email", ctx.UserContext.OAuth.Email).Msg("User is in OAuth whitelist, allowing access")
+			return EffectAllow
+		}
+		return EffectDeny
+	}
+
+	if ctx.ACLs.Users.Block != "" {
+		rule.Log.App.Debug().Msg("Checking users block list")
+		match, err := utils.CheckFilter(ctx.ACLs.Users.Block, ctx.UserContext.GetUsername())
+		if err != nil {
+			rule.Log.App.Warn().Err(err).Str("item", ctx.UserContext.GetUsername()).Msg("Invalid entry in users block list")
+			return EffectAbstain
+		}
+		if match {
+			rule.Log.App.Debug().Str("username", ctx.UserContext.GetUsername()).Msg("User is in users block list, denying access")
+			return EffectDeny
+		}
+		return EffectAllow
+	}
+
+	rule.Log.App.Debug().Msg("Checking users allow list")
+
+	match, err := utils.CheckFilter(ctx.ACLs.Users.Allow, ctx.UserContext.GetUsername())
+
+	if err != nil {
+		rule.Log.App.Warn().Err(err).Str("item", ctx.UserContext.GetUsername()).Msg("Invalid entry in users allow list")
+		return EffectAbstain
+	}
+
+	if match {
+		rule.Log.App.Debug().Str("username", ctx.UserContext.GetUsername()).Msg("User is in users allow list, allowing access")
+		return EffectAllow
+	}
+
+	rule.Log.App.Debug().Str("username", ctx.UserContext.GetUsername()).Msg("User is not in users allow list, denying access")
+	return EffectDeny
+}
+
+type OAuthGroupRule struct {
+	Log *logger.Logger
+}
+
+func (rule *OAuthGroupRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx.ACLs == nil {
+		return EffectAbstain
+	}
+
+	if !ctx.UserContext.IsOAuth() {
+		rule.Log.App.Debug().Msg("User is not an OAuth user, skipping OAuth group check")
+		return EffectAbstain
+	}
+
+	if _, ok := model.OverrideProviders[ctx.UserContext.OAuth.ID]; ok {
+		rule.Log.App.Debug().Str("provider", ctx.UserContext.OAuth.ID).Msg("Provider override detected, skipping group check")
+		return EffectAllow
+	}
+
+	for _, group := range ctx.UserContext.OAuth.Groups {
+		match, err := utils.CheckFilter(ctx.ACLs.OAuth.Groups, strings.TrimSpace(group))
+		if err != nil {
+			return EffectAbstain
+		}
+		if match {
+			rule.Log.App.Trace().Str("group", group).Str("required", ctx.ACLs.OAuth.Groups).Msg("User group matched, allowing access")
+			return EffectAllow
+		}
+	}
+
+	rule.Log.App.Debug().Msg("No groups matched")
+	return EffectDeny
+}
+
+type LDAPGroupRule struct {
+	Log *logger.Logger
+}
+
+func (rule *LDAPGroupRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx == nil {
+		return EffectAbstain
+	}
+
+	if !ctx.UserContext.IsLDAP() {
+		rule.Log.App.Debug().Msg("User is not an LDAP user, skipping LDAP group check")
+		return EffectAbstain
+	}
+
+	for _, group := range ctx.UserContext.LDAP.Groups {
+		match, err := utils.CheckFilter(ctx.ACLs.LDAP.Groups, strings.TrimSpace(group))
+		if err != nil {
+			return EffectAbstain
+		}
+		if match {
+			rule.Log.App.Trace().Str("group", group).Str("required", ctx.ACLs.LDAP.Groups).Msg("User group matched, allowing access")
+			return EffectAllow
+		}
+	}
+
+	rule.Log.App.Debug().Msg("No groups matched")
+	return EffectDeny
+}
+
+type AuthEnabledRule struct {
+	Log *logger.Logger
+}
+
+func (rule *AuthEnabledRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx.ACLs == nil {
+		return EffectDeny
+	}
+
+	if ctx.ACLs.Path.Block != "" {
+		regex, err := regexp.Compile(ctx.ACLs.Path.Block)
+
+		if err != nil {
+			rule.Log.App.Error().Err(err).Msg("Failed to compile block regex")
+			return EffectDeny
+		}
+
+		if !regex.MatchString(ctx.Path) {
+			return EffectAllow
+		}
+	}
+
+	if ctx.ACLs.Path.Allow != "" {
+		regex, err := regexp.Compile(ctx.ACLs.Path.Allow)
+
+		if err != nil {
+			rule.Log.App.Error().Err(err).Msg("Failed to compile allow regex")
+			return EffectDeny
+		}
+
+		if regex.MatchString(ctx.Path) {
+			return EffectAllow
+		}
+	}
+
+	return EffectDeny
+}
+
+type IPAllowedRule struct {
+	Log    *logger.Logger
+	Config model.Config
+}
+
+func (rule *IPAllowedRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx.ACLs == nil {
+		return EffectAbstain
+	}
+
+	// Merge the global and app IP filter
+	blockedIps := append(ctx.ACLs.IP.Block, rule.Config.Auth.IP.Block...)
+	allowedIPs := append(ctx.ACLs.IP.Allow, rule.Config.Auth.IP.Allow...)
+
+	for _, blocked := range blockedIps {
+		match, err := utils.CheckIPFilter(blocked, ctx.IP.String())
+		if err != nil {
+			rule.Log.App.Warn().Err(err).Str("item", blocked).Msg("Invalid IP/CIDR in block list")
+			continue
+		}
+		if match {
+			rule.Log.App.Debug().Str("ip", ctx.IP.String()).Str("item", blocked).Msg("IP is in block list, denying access")
+			return EffectDeny
+		}
+	}
+
+	for _, allowed := range allowedIPs {
+		match, err := utils.CheckIPFilter(allowed, ctx.IP.String())
+		if err != nil {
+			rule.Log.App.Warn().Err(err).Str("item", allowed).Msg("Invalid IP/CIDR in allow list")
+			continue
+		}
+		if match {
+			rule.Log.App.Debug().Str("ip", ctx.IP.String()).Str("item", allowed).Msg("IP is in allow list, allowing access")
+			return EffectAllow
+		}
+	}
+
+	if len(allowedIPs) > 0 {
+		rule.Log.App.Debug().Str("ip", ctx.IP.String()).Msg("IP not in allow list, denying access")
+		return EffectDeny
+	}
+
+	rule.Log.App.Debug().Str("ip", ctx.IP.String()).Msg("IP not in block or allow list, allowing access")
+	return EffectAllow
+}
+
+type IPBypassedRule struct {
+	Log *logger.Logger
+}
+
+func (rule *IPBypassedRule) Evaluate(ctx *ACLContext) Effect {
+	if ctx.ACLs == nil {
+		return EffectDeny
+	}
+
+	for _, bypassed := range ctx.ACLs.IP.Bypass {
+		match, err := utils.CheckIPFilter(bypassed, ctx.IP.String())
+		if err != nil {
+			rule.Log.App.Warn().Err(err).Str("item", bypassed).Msg("Invalid IP/CIDR in bypass list")
+			continue
+		}
+		if match {
+			rule.Log.App.Debug().Str("ip", ctx.IP.String()).Str("item", bypassed).Msg("IP is in bypass list, skipping authentication")
+			return EffectAllow
+		}
+	}
+
+	rule.Log.App.Debug().Str("ip", ctx.IP.String()).Msg("IP not in bypass list, proceeding with authentication")
+	return EffectDeny
+}

internal/service/access_controls_service.go

@@ -13,32 +13,33 @@ type LabelProvider interface {
 
 type AccessControlsService struct {
 	log           *logger.Logger
+	config        model.Config
 	labelProvider *LabelProvider
-	static        map[string]model.App
 }
 
 func NewAccessControlsService(
 	log *logger.Logger,
-	labelProvider *LabelProvider,
-	static map[string]model.App) *AccessControlsService {
+	config model.Config,
+	labelProvider *LabelProvider) *AccessControlsService {
+
 	return &AccessControlsService{
 		log:           log,
+		config:        config,
 		labelProvider: labelProvider,
-		static:        static,
 	}
 }
 
-func (acls *AccessControlsService) lookupStaticACLs(domain string) *model.App {
+func (service *AccessControlsService) lookupStaticACLs(domain string) *model.App {
 	var appAcls *model.App
-	for app, config := range acls.static {
+	for app, config := range service.config.Apps {
 		if config.Config.Domain == domain {
-			acls.log.App.Debug().Str("name", app).Msg("Found matching container by domain")
+			service.log.App.Debug().Str("name", app).Msg("Found matching container by domain")
 			appAcls = &config
 			break // If we find a match by domain, we can stop searching
 		}
 
 		if strings.SplitN(domain, ".", 2)[0] == app {
-			acls.log.App.Debug().Str("name", app).Msg("Found matching container by app name")
+			service.log.App.Debug().Str("name", app).Msg("Found matching container by app name")
 			appAcls = &config
 			break // If we find a match by app name, we can stop searching
 		}
@@ -46,18 +47,18 @@ func (acls *AccessControlsService) lookupStaticACLs(domain string) *model.App {
 	return appAcls
 }
 
-func (acls *AccessControlsService) GetAccessControls(domain string) (*model.App, error) {
+func (service *AccessControlsService) GetAccessControls(domain string) (*model.App, error) {
 	// First check in the static config
-	app := acls.lookupStaticACLs(domain)
+	app := service.lookupStaticACLs(domain)
 
 	if app != nil {
-		acls.log.App.Debug().Msg("Using static ACLs for app")
+		service.log.App.Debug().Msg("Using static ACLs for app")
 		return app, nil
 	}
 
 	// If we have a label provider configured, try to get ACLs from it
-	if acls.labelProvider != nil {
-		return (*acls.labelProvider).GetLabels(domain)
+	if service.labelProvider != nil {
+		return (*service.labelProvider).GetLabels(domain)
 	}
 
 	// no labels

internal/service/auth_service.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"regexp"
 	"strings"
 	"sync"
 	"time"
@@ -18,7 +17,6 @@ import (
 
 	"slices"
 
-	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"golang.org/x/crypto/bcrypt"
 	"golang.org/x/oauth2"
@@ -286,7 +284,12 @@ func (auth *AuthService) RecordLoginAttempt(identifier string, success bool) {
 }
 
 func (auth *AuthService) IsEmailWhitelisted(email string) bool {
-	return utils.CheckFilter(strings.Join(auth.runtime.OAuthWhitelist, ","), email)
+	match, err := utils.CheckFilter(strings.Join(auth.runtime.OAuthWhitelist, ","), email)
+	if err != nil {
+		auth.log.App.Warn().Err(err).Str("email", email).Msg("Invalid email filter pattern")
+		return false
+	}
+	return match
 }
 
 func (auth *AuthService) CreateSession(ctx context.Context, data repository.Session) (*http.Cookie, error) {
@@ -454,171 +457,6 @@ func (auth *AuthService) LDAPAuthConfigured() bool {
 	return auth.ldap != nil
 }
 
-func (auth *AuthService) IsUserAllowed(c *gin.Context, context model.UserContext, acls *model.App) bool {
-	if acls == nil {
-		return true
-	}
-
-	if context.Provider == model.ProviderOAuth {
-		auth.log.App.Debug().Msg("User is an OAuth user, checking OAuth whitelist")
-		return utils.CheckFilter(acls.OAuth.Whitelist, context.OAuth.Email)
-	}
-
-	if acls.Users.Block != "" {
-		auth.log.App.Debug().Msg("Checking users block list")
-		if utils.CheckFilter(acls.Users.Block, context.GetUsername()) {
-			return false
-		}
-	}
-
-	auth.log.App.Debug().Msg("Checking users allow list")
-	return utils.CheckFilter(acls.Users.Allow, context.GetUsername())
-}
-
-func (auth *AuthService) IsInOAuthGroup(c *gin.Context, context model.UserContext, acls *model.App) bool {
-	if acls == nil {
-		return true
-	}
-
-	if !context.IsOAuth() {
-		auth.log.App.Debug().Msg("User is not an OAuth user, skipping OAuth group check")
-		return false
-	}
-
-	if _, ok := model.OverrideProviders[context.OAuth.ID]; ok {
-		auth.log.App.Debug().Str("provider", context.OAuth.ID).Msg("Provider override detected, skipping group check")
-		return true
-	}
-
-	for _, userGroup := range context.OAuth.Groups {
-		if utils.CheckFilter(acls.OAuth.Groups, strings.TrimSpace(userGroup)) {
-			auth.log.App.Trace().Str("group", userGroup).Str("required", acls.OAuth.Groups).Msg("User group matched")
-			return true
-		}
-	}
-
-	auth.log.App.Debug().Msg("No groups matched")
-	return false
-}
-
-func (auth *AuthService) IsInLDAPGroup(c *gin.Context, context model.UserContext, acls *model.App) bool {
-	if acls == nil {
-		return true
-	}
-
-	if !context.IsLDAP() {
-		auth.log.App.Debug().Msg("User is not an LDAP user, skipping LDAP group check")
-		return false
-	}
-
-	for _, userGroup := range context.LDAP.Groups {
-		if utils.CheckFilter(acls.LDAP.Groups, strings.TrimSpace(userGroup)) {
-			auth.log.App.Trace().Str("group", userGroup).Str("required", acls.LDAP.Groups).Msg("User group matched")
-			return true
-		}
-	}
-
-	auth.log.App.Debug().Msg("No groups matched")
-	return false
-}
-
-func (auth *AuthService) IsAuthEnabled(uri string, acls *model.App) (bool, error) {
-	if acls == nil {
-		return true, nil
-	}
-
-	// Check for block list
-	if acls.Path.Block != "" {
-		regex, err := regexp.Compile(acls.Path.Block)
-
-		if err != nil {
-			return true, err
-		}
-
-		if !regex.MatchString(uri) {
-			return false, nil
-		}
-	}
-
-	// Check for allow list
-	if acls.Path.Allow != "" {
-		regex, err := regexp.Compile(acls.Path.Allow)
-
-		if err != nil {
-			return true, err
-		}
-
-		if regex.MatchString(uri) {
-			return false, nil
-		}
-	}
-
-	return true, nil
-}
-
-func (auth *AuthService) CheckIP(ip string, acls *model.App) bool {
-	if acls == nil {
-		return true
-	}
-
-	// Merge the global and app IP filter
-	blockedIps := append(auth.config.Auth.IP.Block, acls.IP.Block...)
-	allowedIPs := append(auth.config.Auth.IP.Allow, acls.IP.Allow...)
-
-	for _, blocked := range blockedIps {
-		res, err := utils.FilterIP(blocked, ip)
-		if err != nil {
-			auth.log.App.Warn().Err(err).Str("item", blocked).Msg("Invalid IP/CIDR in block list")
-			continue
-		}
-		if res {
-			auth.log.App.Debug().Str("ip", ip).Str("item", blocked).Msg("IP is in block list, denying access")
-			return false
-		}
-	}
-
-	for _, allowed := range allowedIPs {
-		res, err := utils.FilterIP(allowed, ip)
-		if err != nil {
-			auth.log.App.Warn().Err(err).Str("item", allowed).Msg("Invalid IP/CIDR in allow list")
-			continue
-		}
-		if res {
-			auth.log.App.Debug().Str("ip", ip).Str("item", allowed).Msg("IP is in allow list, allowing access")
-			return true
-		}
-	}
-
-	if len(allowedIPs) > 0 {
-		auth.log.App.Debug().Str("ip", ip).Msg("IP not in allow list, denying access")
-		return false
-	}
-
-	auth.log.App.Debug().Str("ip", ip).Msg("IP not in any block or allow list, allowing access by default")
-	return true
-}
-
-func (auth *AuthService) IsBypassedIP(ip string, acls *model.App) bool {
-	if acls == nil {
-		return false
-	}
-
-	for _, bypassed := range acls.IP.Bypass {
-		res, err := utils.FilterIP(bypassed, ip)
-		if err != nil {
-			auth.log.App.Warn().Err(err).Str("item", bypassed).Msg("Invalid IP/CIDR in bypass list")
-			continue
-		}
-		if res {
-			auth.log.App.Debug().Str("ip", ip).Str("item", bypassed).Msg("IP is in bypass list, skipping authentication")
-			return true
-		}
-	}
-
-	auth.log.App.Debug().Str("ip", ip).Msg("IP not in bypass list, proceeding with authentication")
-	return false
-}
-
 func (auth *AuthService) NewOAuthSession(serviceName string, params OAuthURLParams) (string, OAuthPendingSession, error) {
 	auth.ensureOAuthSessionLimit()
 

internal/service/policy_engine.go

@@ -0,0 +1,101 @@
+package service
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/tinyauthapp/tinyauth/internal/model"
+	"github.com/tinyauthapp/tinyauth/internal/utils/logger"
+)
+
+type Policy string
+
+const (
+	PolicyAllow Policy = "allow"
+	PolicyDeny  Policy = "deny"
+)
+
+type Effect int
+
+const (
+	EffectAbstain Effect = iota
+	EffectAllow
+	EffectDeny
+)
+
+type Rule interface {
+	Evaluate(ctx *ACLContext) Effect
+}
+
+type ACLContext struct {
+	ACLs        *model.App
+	UserContext *model.UserContext
+	IP          net.IP
+	Path        string
+}
+
+type PolicyEngine struct {
+	log    *logger.Logger
+	rules  map[RuleName]Rule
+	policy Policy
+}
+
+func NewPolicyEngine(config model.Config, log *logger.Logger) (*PolicyEngine, error) {
+	engine := PolicyEngine{
+		log:   log,
+		rules: make(map[RuleName]Rule),
+	}
+
+	switch config.Auth.ACLs.Policy {
+	case string(PolicyAllow):
+		log.App.Debug().Msg("Using 'allow' ACL policy: access to apps will be allowed by default unless explicitly blocked")
+		engine.policy = PolicyAllow
+	case string(PolicyDeny):
+		log.App.Debug().Msg("Using 'deny' ACL policy: access to apps will be blocked by default unless explicitly allowed")
+		engine.policy = PolicyDeny
+	default:
+		return nil, fmt.Errorf("invalid acl policy: %s", config.Auth.ACLs.Policy)
+	}
+
+	return &engine, nil
+}
+
+func (engine *PolicyEngine) RegisterRule(name RuleName, rule Rule) {
+	engine.rules[name] = rule
+}
+
+func (engine *PolicyEngine) evaluateRuleByName(name RuleName, ctx *ACLContext) Effect {
+	rule, exists := engine.rules[name]
+
+	if !exists {
+		engine.log.App.Warn().Str("rule", string(name)).Msg("Rule not found in policy engine, defaulting to deny")
+		return EffectDeny
+	}
+
+	return rule.Evaluate(ctx)
+}
+
+func (engine *PolicyEngine) effectToAccess(effect Effect) bool {
+	switch effect {
+	case EffectAllow:
+		return true
+	case EffectDeny:
+		return false
+	default:
+		// If the effect is abstain, we fall back to the default policy
+		return engine.policy == PolicyAllow
+	}
+}
+
+func (engine *PolicyEngine) Evaluate(name RuleName, ctx *ACLContext) bool {
+	effect := engine.evaluateRuleByName(name, ctx)
+	access := engine.effectToAccess(effect)
+
+	engine.log.App.Debug().
+		Str("rule", string(name)).
+		Int("effect", int(effect)).
+		Bool("access", access).
+		Msg("Evaluated ACL rule")
+
+	return access
+}

internal/test/test.go

@@ -40,6 +40,9 @@ func CreateTestConfigs(t *testing.T) (model.Config, model.RuntimeConfig) {
 			SessionExpiry:   10,
 			LoginTimeout:    10,
 			LoginMaxRetries: 3,
+			ACLs: model.ACLsConfig{
+				Policy: "allow",
+			},
 		},
 		Database: model.DatabaseConfig{
 			Path: filepath.Join(tempDir, "test.db"),
@@ -48,6 +51,32 @@ func CreateTestConfigs(t *testing.T) (model.Config, model.RuntimeConfig) {
 			Enabled: true,
 			Path:    filepath.Join(tempDir, "resources"),
 		},
+		Apps: map[string]model.App{
+			"app_path_allow": {
+				Config: model.AppConfig{
+					Domain: "path-allow.example.com",
+				},
+				Path: model.AppPath{
+					Allow: "/allowed",
+				},
+			},
+			"app_user_allow": {
+				Config: model.AppConfig{
+					Domain: "user-allow.example.com",
+				},
+				Users: model.AppUsers{
+					Allow: "testuser",
+				},
+			},
+			"ip_bypass": {
+				Config: model.AppConfig{
+					Domain: "ip-bypass.example.com",
+				},
+				IP: model.AppIP{
+					Bypass: []string{"10.10.10.10"},
+				},
+			},
+		},
 	}
 
 	passwd, err := bcrypt.GenerateFromPassword([]byte("password"), bcrypt.DefaultCost)

internal/utils/security_utils.go

@@ -3,7 +3,7 @@ package utils
 import (
 	"crypto/rand"
 	"encoding/base64"
-	"errors"
+	"fmt"
 	"net"
 	"regexp"
 	"strings"
@@ -46,26 +46,27 @@ func EncodeBasicAuth(username string, password string) string {
 	return base64.StdEncoding.EncodeToString([]byte(auth))
 }
 
-func FilterIP(filter string, ip string) (bool, error) {
+func CheckIPFilter(filter string, ip string) (bool, error) {
 	ipAddr := net.ParseIP(ip)
 
 	if ipAddr == nil {
-		return false, errors.New("invalid IP address")
+		return false, fmt.Errorf("invalid ip address")
 	}
 
-	filter = strings.Replace(filter, "-", "/", -1)
+	filter = strings.ReplaceAll(filter, "-", "/")
 
 	if strings.Contains(filter, "/") {
 		_, cidr, err := net.ParseCIDR(filter)
 		if err != nil {
-			return false, err
+			return false, fmt.Errorf("invalid cidr notation: %w", err)
 		}
 		return cidr.Contains(ipAddr), nil
 	}
 
 	ipFilter := net.ParseIP(filter)
+
 	if ipFilter == nil {
-		return false, errors.New("invalid IP address in filter")
+		return false, fmt.Errorf("invalid ip address")
 	}
 
 	if ipFilter.Equal(ipAddr) {
@@ -75,31 +76,29 @@ func FilterIP(filter string, ip string) (bool, error) {
 	return false, nil
 }
 
-func CheckFilter(filter string, str string) bool {
+func CheckFilter(filter string, input string) (bool, error) {
 	if len(strings.TrimSpace(filter)) == 0 {
-		return true
+		return false, fmt.Errorf("filter is empty")
 	}
 
 	if strings.HasPrefix(filter, "/") && strings.HasSuffix(filter, "/") {
 		re, err := regexp.Compile(filter[1 : len(filter)-1])
 		if err != nil {
-			return false
+			return false, fmt.Errorf("invalid regex filter: %w", err)
 		}
 
-		if re.MatchString(strings.TrimSpace(str)) {
-			return true
+		if re.MatchString(input) {
+			return true, nil
 		}
 	}
 
-	filterSplit := strings.Split(filter, ",")
-
-	for _, item := range filterSplit {
-		if strings.TrimSpace(item) == strings.TrimSpace(str) {
-			return true
+	for item := range strings.SplitSeq(filter, ",") {
+		if strings.TrimSpace(item) == input {
+			return true, nil
 		}
 	}
 
-	return false
+	return false, nil
 }
 
 func GenerateUUID(str string) string {

internal/utils/security_utils_test.go

@@ -75,66 +75,77 @@ func TestEncodeBasicAuth(t *testing.T) {
 	assert.Equal(t, expected, utils.EncodeBasicAuth(username, password))
 }
 
-func TestFilterIP(t *testing.T) {
+func TestCheckIPFilter(t *testing.T) {
 	// Exact match IPv4
-	ok, err := utils.FilterIP("10.10.0.1", "10.10.0.1")
+	ok, err := utils.CheckIPFilter("10.10.0.1", "10.10.0.1")
 	assert.NoError(t, err)
 	assert.Equal(t, true, ok)
 
 	// Non-match IPv4
-	ok, err = utils.FilterIP("10.10.0.1", "10.10.0.2")
+	ok, err = utils.CheckIPFilter("10.10.0.1", "10.10.0.2")
 	assert.NoError(t, err)
 	assert.Equal(t, false, ok)
 
 	// CIDR match IPv4
-	ok, err = utils.FilterIP("10.10.0.0/24", "10.10.0.2")
+	ok, err = utils.CheckIPFilter("10.10.0.0/24", "10.10.0.2")
 	assert.NoError(t, err)
 	assert.Equal(t, true, ok)
 
 	// CIDR match IPv4 with '-' instead of '/'
-	ok, err = utils.FilterIP("10.10.10.0-24", "10.10.10.5")
+	ok, err = utils.CheckIPFilter("10.10.10.0-24", "10.10.10.5")
 	assert.NoError(t, err)
 	assert.Equal(t, true, ok)
 
 	// CIDR non-match IPv4
-	ok, err = utils.FilterIP("10.10.0.0/24", "10.5.0.1")
+	ok, err = utils.CheckIPFilter("10.10.0.0/24", "10.5.0.1")
 	assert.NoError(t, err)
 	assert.Equal(t, false, ok)
 
 	// Invalid CIDR
-	ok, err = utils.FilterIP("10.10.0.0/222", "10.0.0.1")
-	assert.ErrorContains(t, err, "invalid CIDR address")
+	ok, err = utils.CheckIPFilter("10.10.0.0/222", "10.0.0.1")
+	assert.ErrorContains(t, err, "invalid cidr notation: invalid CIDR address: 10.10.0.0/222")
 	assert.Equal(t, false, ok)
 
 	// Invalid IP in filter
-	ok, err = utils.FilterIP("invalid_ip", "10.5.5.5")
-	assert.ErrorContains(t, err, "invalid IP address in filter")
+	ok, err = utils.CheckIPFilter("invalid_ip", "10.5.5.5")
+	assert.ErrorContains(t, err, "invalid ip address")
 	assert.Equal(t, false, ok)
 
 	// Invalid IP to check
-	ok, err = utils.FilterIP("10.10.10.10", "invalid_ip")
-	assert.ErrorContains(t, err, "invalid IP address")
+	ok, err = utils.CheckIPFilter("10.10.10.10", "invalid_ip")
+	assert.ErrorContains(t, err, "invalid ip address")
 	assert.Equal(t, false, ok)
 }
 
 func TestCheckFilter(t *testing.T) {
 	// Empty filter
-	assert.Equal(t, true, utils.CheckFilter("", "anystring"))
+	_, err := utils.CheckFilter("", "anystring")
+	assert.ErrorContains(t, err, "filter is empty")
 
 	// Exact match
-	assert.Equal(t, true, utils.CheckFilter("hello", "hello"))
+	ok, err := utils.CheckFilter("hello", "hello")
+	assert.NoError(t, err)
+	assert.Equal(t, true, ok)
 
 	// Regex match
-	assert.Equal(t, true, utils.CheckFilter("/^h.*o$/", "hello"))
+	ok, err = utils.CheckFilter("/^h.*o$/", "hello")
+	assert.NoError(t, err)
+	assert.Equal(t, true, ok)
 
 	// Invalid regex
-	assert.Equal(t, false, utils.CheckFilter("/[unclosed", "test"))
+	ok, err = utils.CheckFilter("/[unclosed/", "test")
+	assert.ErrorContains(t, err, "invalid regex")
+	assert.Equal(t, false, ok)
 
 	// Comma-separated values
-	assert.Equal(t, true, utils.CheckFilter("apple, banana, cherry", "banana"))
+	ok, err = utils.CheckFilter("apple, banana, cherry", "banana")
+	assert.NoError(t, err)
+	assert.Equal(t, true, ok)
 
 	// No match
-	assert.Equal(t, false, utils.CheckFilter("apple, banana, cherry", "grape"))
+	ok, err = utils.CheckFilter("apple, banana, cherry", "grape")
+	assert.NoError(t, err)
+	assert.Equal(t, false, ok)
 }
 
 func TestGenerateUUID(t *testing.T) {