feat: oidc (#605)

* chore: add oidc base config

* wip: authorize page

* feat: implement basic oidc functionality

* refactor: implement oidc following tinyauth patterns

* feat: adapt frontend to oidc flow

* fix: review comments

* fix: oidc review comments

* feat: refresh token grant type support

* feat: cleanup expired oidc sessions

* feat: frontend i18n

* fix: fix typo in error screen

* tests: add basic testing

* fix: more review comments

* refactor: rework oidc error messages

* feat: openid discovery endpoint

* feat: jwk endpoint

* i18n: fix typo

* fix: more rabbit nitpicks

* fix: final review comments

* i18n: authorize page error messages

internal/middleware/context_middleware.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"fmt"
+	"slices"
 	"strings"
 	"time"
 
@@ -13,6 +14,8 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
+var OIDCIgnorePaths = []string{"/api/oidc/token", "/api/oidc/userinfo"}
+
 type ContextMiddlewareConfig struct {
 	CookieDomain string
 }
@@ -37,6 +40,13 @@ func (m *ContextMiddleware) Init() error {
 
 func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
+		// There is no point in trying to get credentials if it's an OIDC endpoint
+		path := c.Request.URL.Path
+		if slices.Contains(OIDCIgnorePaths, strings.TrimSuffix(path, "/")) {
+			c.Next()
+			return
+		}
+
 		cookie, err := m.auth.GetSessionCookie(c)
 
 		if err != nil {