start simple session manager
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384f25d220
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4 changed files with 219 additions and 0 deletions
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@ -468,6 +468,32 @@ func AppLogin(c *core.Context) *core.Response {
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return c.Response.Template("login.html", tmplData)
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}
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// Show basic app login
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func AppSession(c *core.Context) *core.Response {
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var session = new(utils.SessionUser)
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hassession := session.Init(c)
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type templateData struct {
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PageCard components.PageCard
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}
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// now fill data of the components
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tmplData := templateData{}
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if hassession {
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return c.Response.Template("appsession.html", tmplData)
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} else {
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return c.Response.Template("login.html", tmplData)
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}
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}
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// Show basic app sample
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func AppSample(c *core.Context) *core.Response {
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@ -41,4 +41,7 @@ func registerRoutes() {
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controller.Get("/applogin", controllers.AppLogin, hooks.CheckSessionCookie)
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controller.Post("/applogin", controllers.AppLogin, hooks.CheckSessionCookie)
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controller.Get("/appsession", controllers.AppSession)
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controller.Post("/appsession", controllers.AppSession)
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}
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12
storage/templates/appsession.html
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12
storage/templates/appsession.html
Normal file
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@ -0,0 +1,12 @@
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<!DOCTYPE html>
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<html lang="en">
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{{template "page_head" "Sample page test session vars"}}
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<body>
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<div class="container">
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<div class="row">
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{{template "page_card" .PageCard}}
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</div>
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</div>
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{{template "page_footer"}}
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</body>
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</html>
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178
utils/session.go
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178
utils/session.go
Normal file
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@ -0,0 +1,178 @@
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// Copyright (c) 2024 Zeni Kim <zenik@smarteching.com>
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// Use of this source code is governed by MIT-style
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// license that can be found in the LICENSE file.
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package utils
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import (
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"crypto/md5"
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"errors"
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"fmt"
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"sync"
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"time"
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"encoding/json"
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"git.smarteching.com/goffee/core"
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"git.smarteching.com/goffee/cup/models"
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"gorm.io/gorm"
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)
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type SessionUser struct {
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mu sync.RWMutex
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context *core.Context
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userID uint
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hashedSessionKey string
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authenticated bool
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sessionStart time.Time
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values map[string]interface{}
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}
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// start the struct
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func (s *SessionUser) Init(c *core.Context) bool {
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// check session cookie
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pass := true
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token := ""
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s.context = c
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payload := make(map[string]interface{})
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usercookie, err := c.GetCookie()
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if err != nil {
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}
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token = usercookie.Token
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if token == "" {
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pass = false
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} else {
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payload, err = c.GetJWT().DecodeToken(token)
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if err != nil {
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pass = false
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} else {
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userID := uint(c.CastToInt(payload["userID"]))
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userAgent := c.GetUserAgent()
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hashedCacheKey := CreateAuthTokenHashedCacheKey(userID, userAgent)
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cachedToken, err := c.GetCache().Get(hashedCacheKey)
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if err != nil {
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pass = false
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} else if cachedToken != token {
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pass = false
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} else {
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var user models.User
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res := c.GetGorm().Where("id = ?", userID).First(&user)
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if res.Error != nil && !errors.Is(res.Error, gorm.ErrRecordNotFound) {
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pass = false
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}
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// if have session start the struct
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if pass {
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userAgent := c.GetUserAgent()
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sessionKey := fmt.Sprintf("session%v_%v", userID, userAgent)
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s.hashedSessionKey = fmt.Sprintf("%v", fmt.Sprintf("%x", md5.Sum([]byte(sessionKey))))
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value, err := c.GetCache().Get(s.hashedSessionKey)
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if err != nil {
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s.values = make(map[string]interface{})
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s.authenticated = true
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s.userID = userID
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if len(value) > 0 {
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err := json.Unmarshal([]byte(value), &s.values)
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if err != nil {
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}
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} else {
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}
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}
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return true
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} else {
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s.hashedSessionKey = ""
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s.authenticated = false
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s.userID = 0
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return false
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}
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}
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}
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}
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return false
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}
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func (s *SessionUser) Set(key string, value interface{}) error {
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s.mu.Lock()
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s.values[key] = value
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s.mu.Unlock()
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return s.Save()
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}
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func (s *SessionUser) Get(key string) (interface{}, bool) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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val, ok := s.values[key]
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return val, ok
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}
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func (s *SessionUser) Delete(key string) interface{} {
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s.mu.RLock()
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v, ok := s.values[key]
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s.mu.RUnlock()
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if ok {
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s.mu.Lock()
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delete(s.values, key)
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s.mu.Unlock()
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}
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s.Save()
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return v
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}
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func (s *SessionUser) Flush() error {
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s.mu.Lock()
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s.values = make(map[string]interface{})
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s.mu.Unlock()
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return s.Save()
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}
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func (s *SessionUser) Save() error {
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var value string
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s.mu.RLock()
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if len(s.values) > 0 {
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buf, err := json.Marshal(&s.values)
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if err != nil {
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s.mu.RUnlock()
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return err
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}
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value = string(buf)
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}
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s.mu.RUnlock()
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if len(value) > 0 {
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s.context.GetCache().Set(s.hashedSessionKey, value)
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}
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return nil
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}
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func (s *SessionUser) GetUserID() uint {
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return s.userID
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}
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