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start simple session manager

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This commit is contained in:
Zeni Kim 2024-10-21 16:04:58 -05:00
parent 384f25d220
commit 23fd877a98
4 changed files with 219 additions and 0 deletions
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26
controllers/authentication.go
View file

@ -468,6 +468,32 @@ func AppLogin(c *core.Context) *core.Response {
return c.Response.Template("login.html", tmplData) return c.Response.Template("login.html", tmplData)
} }
// Show basic app login
func AppSession(c *core.Context) *core.Response {
var session = new(utils.SessionUser)
hassession := session.Init(c)
type templateData struct {
PageCard components.PageCard
}
// now fill data of the components
tmplData := templateData{}
if hassession {
return c.Response.Template("appsession.html", tmplData)
} else {
return c.Response.Template("login.html", tmplData)
}
}
// Show basic app sample // Show basic app sample
func AppSample(c *core.Context) *core.Response { func AppSample(c *core.Context) *core.Response {

3
routes.go
View file

@ -41,4 +41,7 @@ func registerRoutes() {
controller.Get("/applogin", controllers.AppLogin, hooks.CheckSessionCookie) controller.Get("/applogin", controllers.AppLogin, hooks.CheckSessionCookie)
controller.Post("/applogin", controllers.AppLogin, hooks.CheckSessionCookie) controller.Post("/applogin", controllers.AppLogin, hooks.CheckSessionCookie)
controller.Get("/appsession", controllers.AppSession)
controller.Post("/appsession", controllers.AppSession)
} }

12
storage/templates/appsession.html Normal file
View file

@ -0,0 +1,12 @@
<!DOCTYPE html>
<html lang="en">
{{template "page_head" "Sample page test session vars"}}
<body>
<div class="container">
<div class="row">
{{template "page_card" .PageCard}}
</div>
</div>
{{template "page_footer"}}
</body>
</html>

178
utils/session.go Normal file
View file

@ -0,0 +1,178 @@
// Copyright (c) 2024 Zeni Kim <zenik@smarteching.com>
// Use of this source code is governed by MIT-style
// license that can be found in the LICENSE file.
package utils
import (
"crypto/md5"
"errors"
"fmt"
"sync"
"time"
"encoding/json"
"git.smarteching.com/goffee/core"
"git.smarteching.com/goffee/cup/models"
"gorm.io/gorm"
)
type SessionUser struct {
mu sync.RWMutex
context *core.Context
userID uint
hashedSessionKey string
authenticated bool
sessionStart time.Time
values map[string]interface{}
}
// start the struct
func (s *SessionUser) Init(c *core.Context) bool {
// check session cookie
pass := true
token := ""
s.context = c
payload := make(map[string]interface{})
usercookie, err := c.GetCookie()
if err != nil {
}
token = usercookie.Token
if token == "" {
pass = false
} else {
payload, err = c.GetJWT().DecodeToken(token)
if err != nil {
pass = false
} else {
userID := uint(c.CastToInt(payload["userID"]))
userAgent := c.GetUserAgent()
hashedCacheKey := CreateAuthTokenHashedCacheKey(userID, userAgent)
cachedToken, err := c.GetCache().Get(hashedCacheKey)
if err != nil {
pass = false
} else if cachedToken != token {
pass = false
} else {
var user models.User
res := c.GetGorm().Where("id = ?", userID).First(&user)
if res.Error != nil && !errors.Is(res.Error, gorm.ErrRecordNotFound) {
pass = false
}
// if have session start the struct
if pass {
userAgent := c.GetUserAgent()
sessionKey := fmt.Sprintf("session%v_%v", userID, userAgent)
s.hashedSessionKey = fmt.Sprintf("%v", fmt.Sprintf("%x", md5.Sum([]byte(sessionKey))))
value, err := c.GetCache().Get(s.hashedSessionKey)
if err != nil {
s.values = make(map[string]interface{})
s.authenticated = true
s.userID = userID
if len(value) > 0 {
err := json.Unmarshal([]byte(value), &s.values)
if err != nil {
}
} else {
}
}
return true
} else {
s.hashedSessionKey = ""
s.authenticated = false
s.userID = 0
return false
}
}
}
}
return false
}
func (s *SessionUser) Set(key string, value interface{}) error {
s.mu.Lock()
s.values[key] = value
s.mu.Unlock()
return s.Save()
}
func (s *SessionUser) Get(key string) (interface{}, bool) {
s.mu.RLock()
defer s.mu.RUnlock()
val, ok := s.values[key]
return val, ok
}
func (s *SessionUser) Delete(key string) interface{} {
s.mu.RLock()
v, ok := s.values[key]
s.mu.RUnlock()
if ok {
s.mu.Lock()
delete(s.values, key)
s.mu.Unlock()
}
s.Save()
return v
}
func (s *SessionUser) Flush() error {
s.mu.Lock()
s.values = make(map[string]interface{})
s.mu.Unlock()
return s.Save()
}
func (s *SessionUser) Save() error {
var value string
s.mu.RLock()
if len(s.values) > 0 {
buf, err := json.Marshal(&s.values)
if err != nil {
s.mu.RUnlock()
return err
}
value = string(buf)
}
s.mu.RUnlock()
if len(value) > 0 {
s.context.GetCache().Set(s.hashedSessionKey, value)
}
return nil
}
func (s *SessionUser) GetUserID() uint {
return s.userID
}