Move internal packages to an internal folder

For reference: https://go.dev/doc/go1.4#internalpackages

1 files changed, 227 insertions, 0 deletions

diff --git a/internal/ui/middleware.go b/internal/ui/middleware.go
new file mode 100644
index 00000000..93cd9491
--- /dev/null
+++ b/internal/ui/middleware.go
@@ -0,0 +1,227 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package ui // import "miniflux.app/v2/internal/ui"
+
+import (
+	"context"
+	"errors"
+	"net/http"
+
+	"miniflux.app/v2/internal/config"
+	"miniflux.app/v2/internal/http/cookie"
+	"miniflux.app/v2/internal/http/request"
+	"miniflux.app/v2/internal/http/response/html"
+	"miniflux.app/v2/internal/http/route"
+	"miniflux.app/v2/internal/logger"
+	"miniflux.app/v2/internal/model"
+	"miniflux.app/v2/internal/storage"
+	"miniflux.app/v2/internal/ui/session"
+
+	"github.com/gorilla/mux"
+)
+
+type middleware struct {
+	router *mux.Router
+	store  *storage.Storage
+}
+
+func newMiddleware(router *mux.Router, store *storage.Storage) *middleware {
+	return &middleware{router, store}
+}
+
+func (m *middleware) handleUserSession(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		session := m.getUserSessionFromCookie(r)
+
+		if session == nil {
+			if m.isPublicRoute(r) {
+				next.ServeHTTP(w, r)
+			} else {
+				logger.Debug("[UI:UserSession] Session not found, redirect to login page")
+				html.Redirect(w, r, route.Path(m.router, "login"))
+			}
+		} else {
+			logger.Debug("[UI:UserSession] %s", session)
+
+			ctx := r.Context()
+			ctx = context.WithValue(ctx, request.UserIDContextKey, session.UserID)
+			ctx = context.WithValue(ctx, request.IsAuthenticatedContextKey, true)
+			ctx = context.WithValue(ctx, request.UserSessionTokenContextKey, session.Token)
+
+			next.ServeHTTP(w, r.WithContext(ctx))
+		}
+	})
+}
+
+func (m *middleware) handleAppSession(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var err error
+		session := m.getAppSessionValueFromCookie(r)
+
+		if session == nil {
+			if request.IsAuthenticated(r) {
+				userID := request.UserID(r)
+				logger.Debug("[UI:AppSession] Cookie expired but user #%d is logged: creating a new session", userID)
+				session, err = m.store.CreateAppSessionWithUserPrefs(userID)
+				if err != nil {
+					html.ServerError(w, r, err)
+					return
+				}
+			} else {
+				logger.Debug("[UI:AppSession] Session not found, creating a new one")
+				session, err = m.store.CreateAppSession()
+				if err != nil {
+					html.ServerError(w, r, err)
+					return
+				}
+			}
+
+			http.SetCookie(w, cookie.New(cookie.CookieAppSessionID, session.ID, config.Opts.HTTPS, config.Opts.BasePath()))
+		} else {
+			logger.Debug("[UI:AppSession] %s", session)
+		}
+
+		if r.Method == http.MethodPost {
+			formValue := r.FormValue("csrf")
+			headerValue := r.Header.Get("X-Csrf-Token")
+
+			if session.Data.CSRF != formValue && session.Data.CSRF != headerValue {
+				logger.Error(`[UI:AppSession] Invalid or missing CSRF token: Form="%s", Header="%s"`, formValue, headerValue)
+
+				if mux.CurrentRoute(r).GetName() == "checkLogin" {
+					html.Redirect(w, r, route.Path(m.router, "login"))
+					return
+				}
+
+				html.BadRequest(w, r, errors.New("Invalid or missing CSRF"))
+				return
+			}
+		}
+
+		ctx := r.Context()
+		ctx = context.WithValue(ctx, request.SessionIDContextKey, session.ID)
+		ctx = context.WithValue(ctx, request.CSRFContextKey, session.Data.CSRF)
+		ctx = context.WithValue(ctx, request.OAuth2StateContextKey, session.Data.OAuth2State)
+		ctx = context.WithValue(ctx, request.FlashMessageContextKey, session.Data.FlashMessage)
+		ctx = context.WithValue(ctx, request.FlashErrorMessageContextKey, session.Data.FlashErrorMessage)
+		ctx = context.WithValue(ctx, request.UserLanguageContextKey, session.Data.Language)
+		ctx = context.WithValue(ctx, request.UserThemeContextKey, session.Data.Theme)
+		ctx = context.WithValue(ctx, request.PocketRequestTokenContextKey, session.Data.PocketRequestToken)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func (m *middleware) getAppSessionValueFromCookie(r *http.Request) *model.Session {
+	cookieValue := request.CookieValue(r, cookie.CookieAppSessionID)
+	if cookieValue == "" {
+		return nil
+	}
+
+	session, err := m.store.AppSession(cookieValue)
+	if err != nil {
+		logger.Error("[UI:AppSession] %v", err)
+		return nil
+	}
+
+	return session
+}
+
+func (m *middleware) isPublicRoute(r *http.Request) bool {
+	route := mux.CurrentRoute(r)
+	switch route.GetName() {
+	case "login",
+		"checkLogin",
+		"stylesheet",
+		"javascript",
+		"oauth2Redirect",
+		"oauth2Callback",
+		"appIcon",
+		"favicon",
+		"webManifest",
+		"robots",
+		"sharedEntry",
+		"healthcheck",
+		"offline",
+		"proxy":
+		return true
+	default:
+		return false
+	}
+}
+
+func (m *middleware) getUserSessionFromCookie(r *http.Request) *model.UserSession {
+	cookieValue := request.CookieValue(r, cookie.CookieUserSessionID)
+	if cookieValue == "" {
+		return nil
+	}
+
+	session, err := m.store.UserSessionByToken(cookieValue)
+	if err != nil {
+		logger.Error("[UI:UserSession] %v", err)
+		return nil
+	}
+
+	return session
+}
+
+func (m *middleware) handleAuthProxy(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if request.IsAuthenticated(r) || config.Opts.AuthProxyHeader() == "" {
+			next.ServeHTTP(w, r)
+			return
+		}
+
+		username := r.Header.Get(config.Opts.AuthProxyHeader())
+		if username == "" {
+			next.ServeHTTP(w, r)
+			return
+		}
+
+		clientIP := request.ClientIP(r)
+		logger.Info("[AuthProxy] [ClientIP=%s] Received authenticated requested for %q", clientIP, username)
+
+		user, err := m.store.UserByUsername(username)
+		if err != nil {
+			html.ServerError(w, r, err)
+			return
+		}
+
+		if user == nil {
+			logger.Error("[AuthProxy] [ClientIP=%s] %q doesn't exist", clientIP, username)
+
+			if !config.Opts.IsAuthProxyUserCreationAllowed() {
+				html.Forbidden(w, r)
+				return
+			}
+
+			if user, err = m.store.CreateUser(&model.UserCreationRequest{Username: username}); err != nil {
+				html.ServerError(w, r, err)
+				return
+			}
+		}
+
+		sessionToken, _, err := m.store.CreateUserSessionFromUsername(user.Username, r.UserAgent(), clientIP)
+		if err != nil {
+			html.ServerError(w, r, err)
+			return
+		}
+
+		logger.Info("[AuthProxy] [ClientIP=%s] username=%s just logged in", clientIP, user.Username)
+
+		m.store.SetLastLogin(user.ID)
+
+		sess := session.New(m.store, request.SessionID(r))
+		sess.SetLanguage(user.Language)
+		sess.SetTheme(user.Theme)
+
+		http.SetCookie(w, cookie.New(
+			cookie.CookieUserSessionID,
+			sessionToken,
+			config.Opts.HTTPS,
+			config.Opts.BasePath(),
+		))
+
+		html.Redirect(w, r, route.Path(m.router, "unread"))
+	})
+}