// 认证成功后创建 token 和 session
func authSuccess(ctx *gin.Context, authType string, user *model.User) {
sid, err := session.NewSessionId()
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
timestamp := time.Now().Unix()
tk := token.Token{
SessionId: sid,
TokenId: token.NewTokenId(),
AuthType: authType,
ExpirationAccess: token.ExpirationAccess(timestamp),
ExpirationRefresh: token.ExpirationRefresh(timestamp),
}
tkEncodedBytes, err := tk.Encode()
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrTokenEncodeFailed)
return
}
ss := session.Session{
TokenSignature: tk.Signatrue,
UserId: user.Id,
PasswordTag: user.PasswordTag,
}
if err = session.Add(sid, &ss); err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
resp := struct {
*errors.Error
Token string `json:"token"`
}{
Error: errors.ErrOK,
Token: string(tkEncodedBytes),
}
ctx.JSON(200, &resp)
return
}
// 刷新 token
func RefreshHandler(ctx *gin.Context) {
tkString := ctx.Request.Header.Get("x-token")
if tkString == "" {
ctx.JSON(200, errors.ErrTokenMissing)
return
}
// 解析 token
tk := &token.Token{}
if err := tk.Decode([]byte(tkString)); err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrTokenDecodeFailed)
return
}
// 如果是 guest 直接返回
if tk.AuthType == token.AuthTypeGuest {
resp := struct {
*errors.Error
Token string `json:"token"`
}{
Error: errors.ErrOK,
Token: tkString,
}
ctx.JSON(200, &resp)
return
}
timestamp := time.Now().Unix()
if timestamp >= tk.ExpirationRefresh {
ctx.JSON(200, errors.ErrTokenRefreshExpired)
return
}
if timestamp+1200 < tk.ExpirationAccess { // 过早的刷新也是直接返回
resp := struct {
*errors.Error
Token string `json:"token"`
}{
Error: errors.ErrOK,
Token: tkString,
}
ctx.JSON(200, &resp)
return
}
if tk.ExpirationAccess >= tk.ExpirationRefresh { // 提前 1200秒 暴力的结束, 防止客户端循环的刷新
ctx.JSON(200, errors.ErrTokenRefreshExpired)
return
}
// 现在我们真的需要刷新token啦!!!
// 获取 Session 并判断与 token 是否匹配
ss, err := session.Get(tk.SessionId)
if err != nil {
glog.Errorln(err)
if err == errors.ErrNotFound {
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
ctx.JSON(200, errors.ErrInternalServerError)
return
}
if !security.SecureCompareString(tk.Signatrue, ss.TokenSignature) {
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
// 获取用户信息并判断与 token, session 是否一致
user, err := model.Get(ss.UserId)
if err != nil {
glog.Errorln(err)
if err == model.ErrNotFound {
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
ctx.JSON(200, errors.ErrInternalServerError)
return
}
bindType, err := token.GetBindType(tk.AuthType)
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
if user.BindTypes&bindType == 0 {
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
if tk.AuthType == token.AuthTypeEmailPassword || tk.AuthType == token.AuthTypePhonePassword {
if ss.PasswordTag != user.PasswordTag {
ctx.JSON(200, errors.ErrTokenInvalid)
return
}
}
tk2 := token.Token{
SessionId: tk.SessionId,
TokenId: token.NewTokenId(),
AuthType: tk.AuthType,
ExpirationAccess: token.ExpirationAccess(timestamp),
ExpirationRefresh: tk.ExpirationRefresh,
}
if tk2.ExpirationAccess > tk2.ExpirationRefresh {
tk2.ExpirationAccess = tk2.ExpirationRefresh
}
tk2EncodedBytes, err := tk2.Encode()
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrTokenEncodeFailed)
return
}
ss.TokenSignature = tk2.Signatrue
if err = session.Set(tk2.SessionId, ss); err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
resp := struct {
*errors.Error
Token string `json:"token"`
}{
Error: errors.ErrOK,
Token: string(tk2EncodedBytes),
}
ctx.JSON(200, &resp)
return
}
// 微信 oauth2 认证
// 需要提供 code, state 参数.
func AuthHandler(ctx *gin.Context) {
// MustAuthHandler(ctx)
queryValues := ctx.Request.URL.Query()
code := queryValues.Get("code")
if code == "" {
ctx.JSON(200, errors.ErrBadRequest)
return
}
state := queryValues.Get("state")
if state == "" {
ctx.JSON(200, errors.ErrBadRequest)
return
}
ss := ctx.MustGet("sso_session").(*session.Session)
// 比较 state 是否一致
if !security.SecureCompareString(state, ss.OAuth2State) {
ctx.JSON(200, errors.ErrOAuthStateMismatch)
return
}
oauth2Client := oauth2.Client{
Config: oauth2Config,
}
oauth2Token, err := oauth2Client.Exchange(code)
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
if oauth2Token.UnionId == "" {
glog.Errorln("unionid is empty")
ctx.JSON(200, errors.ErrInternalServerError)
return
}
timestamp := time.Now().Unix()
user, err := model.GetByWechat(oauth2Token.UnionId)
switch err {
default:
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
case model.ErrNotFound:
var oauth2UserInfo openOAuth2.UserInfo
if err = oauth2Client.GetUserInfo(&oauth2UserInfo, ""); err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
user, err = model.AddByWechat(oauth2Token.UnionId, oauth2UserInfo.Nickname, timestamp)
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
fallthrough
case nil:
sid, err := session.NewSessionId()
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
tk2 := token.Token{
SessionId: sid,
TokenId: token.NewTokenId(),
AuthType: token.AuthTypeOAuthWechat,
ExpirationAccess: token.ExpirationAccess(timestamp),
ExpirationRefresh: token.ExpirationRefresh(timestamp),
}
tk2EncodedBytes, err := tk2.Encode()
if err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrTokenEncodeFailed)
return
}
ss2 := session.Session{
TokenSignature: tk2.Signatrue,
UserId: user.Id,
PasswordTag: user.PasswordTag,
}
if err = session.Add(sid, &ss2); err != nil {
glog.Errorln(err)
ctx.JSON(200, errors.ErrInternalServerError)
return
}
resp := struct {
*errors.Error
Token string `json:"token"`
}{
Error: errors.ErrOK,
Token: string(tk2EncodedBytes),
}
ctx.JSON(200, &resp)
return
}
}