76 lines
2.5 KiB
Go
76 lines
2.5 KiB
Go
// Copyright 2018 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package middleware // import "miniflux.app/middleware"
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import (
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"context"
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"errors"
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"net/http"
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"miniflux.app/http/cookie"
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"miniflux.app/http/request"
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"miniflux.app/http/response/html"
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"miniflux.app/logger"
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"miniflux.app/model"
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)
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// AppSession handles application session middleware.
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func (m *Middleware) AppSession(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var err error
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session := m.getAppSessionValueFromCookie(r)
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if session == nil {
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logger.Debug("[Middleware:AppSession] Session not found")
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session, err = m.store.CreateSession()
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if err != nil {
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html.ServerError(w, r, err)
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return
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}
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http.SetCookie(w, cookie.New(cookie.CookieSessionID, session.ID, m.cfg.IsHTTPS, m.cfg.BasePath()))
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} else {
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logger.Debug("[Middleware:AppSession] %s", session)
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}
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if r.Method == "POST" {
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formValue := r.FormValue("csrf")
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headerValue := r.Header.Get("X-Csrf-Token")
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if session.Data.CSRF != formValue && session.Data.CSRF != headerValue {
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logger.Error(`[Middleware:AppSession] Invalid or missing CSRF token: Form="%s", Header="%s"`, formValue, headerValue)
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html.BadRequest(w, r, errors.New("Invalid or missing CSRF"))
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return
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}
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}
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ctx := r.Context()
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ctx = context.WithValue(ctx, request.SessionIDContextKey, session.ID)
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ctx = context.WithValue(ctx, request.CSRFContextKey, session.Data.CSRF)
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ctx = context.WithValue(ctx, request.OAuth2StateContextKey, session.Data.OAuth2State)
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ctx = context.WithValue(ctx, request.FlashMessageContextKey, session.Data.FlashMessage)
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ctx = context.WithValue(ctx, request.FlashErrorMessageContextKey, session.Data.FlashErrorMessage)
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ctx = context.WithValue(ctx, request.UserLanguageContextKey, session.Data.Language)
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ctx = context.WithValue(ctx, request.UserThemeContextKey, session.Data.Theme)
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ctx = context.WithValue(ctx, request.PocketRequestTokenContextKey, session.Data.PocketRequestToken)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func (m *Middleware) getAppSessionValueFromCookie(r *http.Request) *model.Session {
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cookieValue := request.CookieValue(r, cookie.CookieSessionID)
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if cookieValue == "" {
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return nil
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}
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session, err := m.store.Session(cookieValue)
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if err != nil {
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logger.Error("[Middleware:AppSession] %v", err)
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return nil
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}
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return session
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}
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