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session.go
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session.go
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package session
import (
"context"
"encoding/json"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
"net/http"
"time"
"github.com/shoppehub/fastapi/base"
"github.com/shoppehub/fastapi/crud"
"go.mongodb.org/mongo-driver/bson/primitive"
)
var SidKey = "sid"
var ChemballUserKey = "c_u"
var MaxAge int
var collectionName = "user_sessions"
// 获取 session 的登录id
func GetUserId(r *http.Request) string {
s := GetUserSession(r)
if s != nil {
return s.Uid
}
return ""
}
// 获取dession
func GetUserSession(r *http.Request) *UserSession {
var ctx = r.Context()
val := ctx.Value(SidKey)
if val == nil {
return &UserSession{}
}
return val.(*UserSession)
}
func wrapUserSession(resource *crud.Resource, r *http.Request) {
var sid = getCookieSid(r)
if sid == "" {
return
}
var session UserSession
resource.FindById(sid, &session, crud.FindOneOptions{CollectionName: &collectionName})
if session.Status == "login" && (session.Expires.After(time.Now())) {
setUserSession(r, &session)
}
}
func setUserSession(r *http.Request, session *UserSession) {
var ctx = r.Context()
*r = *r.WithContext(context.WithValue(ctx, SidKey, session))
}
func getCookieSid(r *http.Request) string {
var sid string
if c, errCookie := r.Cookie(SidKey); errCookie == nil {
sid = c.Value
}
return sid
}
func NewUserSession(resource *crud.Resource, userSession UserSession, r *http.Request, w http.ResponseWriter) (*UserSession, string) {
cookie := writeCookie(r, w, userSession)
oid, _ := primitive.ObjectIDFromHex(cookie.Value)
session := UserSession{
BaseId: base.BaseId{
Id: &oid,
},
Uid: userSession.Uid,
Agent: r.UserAgent(),
Expires: &cookie.Expires,
Ip: GetIP(r),
Status: "login",
Avatar: userSession.Avatar,
NickName: userSession.NickName,
}
if cookie.Expires.IsZero() {
d := time.Duration(24) * time.Hour
expires := time.Now().Add(d)
session.Expires = &expires
}
resource.SaveOrUpdateOne(session, &crud.UpdateOption{
CollectionName: &collectionName,
})
return &session, cookie.Value
}
func writeCookie(r *http.Request, w http.ResponseWriter, session UserSession) *http.Cookie {
domain := GetDomain(r.Host)
sid := primitive.NewObjectID().Hex()
// sid 是服务端判断 sessionId
sidCookie := http.Cookie{
Name: SidKey,
Value: sid,
Path: "/",
Domain: domain,
HttpOnly: true,
}
if r.TLS != nil {
sidCookie.Secure = true
sidCookie.SameSite = http.SameSiteNoneMode
}
setCookieExpires(&sidCookie, session.MaxAge)
http.SetCookie(w, &sidCookie)
userInfo := map[string]interface{}{
"avatar": session.Avatar,
"nickName": session.NickName,
"email": session.Email,
}
userInfoStr, err := json.Marshal(userInfo)
if err == nil {
userInfoStr, encryptError := Encrypt(string(userInfoStr), "chemball.com", "chemball")
if encryptError == nil {
userCookie := http.Cookie{
Name: ChemballUserKey,
Value: userInfoStr,
Path: "/",
Domain: domain,
}
if r.TLS != nil {
userCookie.Secure = true
userCookie.SameSite = http.SameSiteNoneMode
}
setCookieExpires(&userCookie, session.MaxAge)
http.SetCookie(w, &userCookie)
} else {
logrus.Error("Encrypt Error: ", encryptError)
}
} else {
logrus.Error("json.Marshal Error: ", err)
}
return &sidCookie
}
func expiresCookie(r *http.Request, w http.ResponseWriter) *http.Cookie {
domain := GetDomain(r.Host)
// sid 是服务端判断 sessionId
sidCookie := http.Cookie{
Name: SidKey,
Value: "",
Path: "/",
Domain: domain,
HttpOnly: true,
Expires: time.Unix(0, 0),
}
if r.TLS != nil {
sidCookie.Secure = true
sidCookie.SameSite = http.SameSiteNoneMode
}
http.SetCookie(w, &sidCookie)
userCookie := http.Cookie{
Name: ChemballUserKey,
Value: "",
Path: "/",
Domain: domain,
Expires: time.Unix(0, 0),
}
if r.TLS != nil {
userCookie.Secure = true
userCookie.SameSite = http.SameSiteNoneMode
}
http.SetCookie(w, &userCookie)
return &sidCookie
}
/*设置cookie的过期时间*/
func setCookieExpires(cookie *http.Cookie, sessionMaxAge int64) {
if sessionMaxAge > 0 {
d := time.Duration(sessionMaxAge) * time.Second
cookie.Expires = time.Now().Add(d)
} else if MaxAge > 0 {
d := time.Duration(MaxAge) * time.Second
cookie.Expires = time.Now().Add(d)
}
}
// 退出登录
func RemoveUserSession(resource *crud.Resource, request *http.Request, writer gin.ResponseWriter) {
var sid = getCookieSid(request)
if sid == "" {
return
}
var session UserSession
resource.FindById(sid, &session, crud.FindOneOptions{CollectionName: &collectionName})
session.Status = "logout"
_, logoutError := resource.SaveOrUpdateOne(session, &crud.UpdateOption{
CollectionName: &collectionName,
})
if logoutError == nil {
expiresCookie(request, writer)
}
}