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base.go
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base.go
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package apihandler
import (
"crypto/md5"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/http/httputil"
"strconv"
"strings"
"time"
"github.com/gin-gonic/gin"
"github.com/golang-jwt/jwt"
"github.com/uxff/flexdrive/pkg/dao"
"github.com/uxff/flexdrive/pkg/dao/base"
"github.com/uxff/flexdrive/pkg/log"
"github.com/uxff/flexdrive/pkg/utils"
)
// todo: the GpaToken should use jwt instead
// cookie中使用
const (
CookieKeyGpa = "gpa"
HeaderKeyAuth = "API-Token"
// CookieKeySign = "s"
CookieKeySalt = "TmhMbU52YlM1amJp"
)
// 代码内使用 http协议中不可见
const (
CtxKeyGpa = "_gpa"
CtxKeyRequestId = "_requestId"
CtxKeyURI = "_uri"
CookieKeyCaptchaId = "_captchaId"
)
const (
LoginCookieExpire = 3600 * 24 * 365 // 365天
)
// 后台登录关键信息
type GpaToken struct {
Mid int
//Name string // 没有值
RoleId int
//RoleName string // 没有值
LoginAt int
MgrEnt *dao.Manager
}
func (t *GpaToken) ToString() string {
return fmt.Sprintf("%d.%d.%d", t.Mid, t.RoleId, t.LoginAt)
}
func (t *GpaToken) FromString(str string) {
t.Mid = 0
cols := strings.Split(str, ".")
if len(cols) != 3 {
return
}
t.Mid, _ = strconv.Atoi(cols[0])
t.RoleId, _ = strconv.Atoi(cols[1])
t.LoginAt, _ = strconv.Atoi(cols[2])
}
func (t *GpaToken) MakeSign() string {
enc := md5.New()
enc.Write([]byte(t.ToString() + CookieKeySalt))
return hex.EncodeToString(enc.Sum(nil))
}
func decodeGpaFromJwtClaim(signedJwtToken string) (g *GpaToken, err error) {
jwtToken, err := jwt.Parse(signedJwtToken, func(token *jwt.Token) (interface{}, error) {
return []byte(CookieKeySalt), nil
})
if err != nil || jwtToken == nil {
// log.Warnf("get jwtToken failed, error:%v", err)
return nil, err
}
g = &GpaToken{}
g.FromString(jwtToken.Claims.(jwt.MapClaims)["gpa"].(string))
if g.Mid <= 0 {
return nil, errors.New("gpatoken has no mid")
}
return g, nil
}
func genJwtClaimFromMgrEnt(mgrEnt *dao.Manager) (gpa *GpaToken, signedJwtToken string, err error) {
gpa = &GpaToken{
Mid: mgrEnt.Id,
//Name: mgrEnt.Name,
RoleId: mgrEnt.RoleId,
//RoleName: mgrEnt.RoleName,
LoginAt: int(mgrEnt.LastLoginAt.Unix()),
}
// return gpa,
claim := map[string]interface{}{
"gpa": gpa.ToString(),
}
jwtToken := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims(claim))
signedJwtToken, err = jwtToken.SignedString([]byte(CookieKeySalt))
return
}
func TraceMiddleWare(c *gin.Context) {
// 埋入requestId
requestId := utils.NewRandomHex(16)
uri := c.Request.URL.String()
c.Set(CtxKeyRequestId, requestId)
c.Set(CtxKeyURI, uri)
rawBody, _ := httputil.DumpRequest(c.Request, true)
log.Trace(requestId).Debugf("原始请求体:%s", rawBody)
c.Next()
}
// 对每个请求添加全局requestId,放到gin.Context里。后面的日志里尽量加上,方便追踪问题
// 所有交易相关接口调用前的认证中间件
func AuthMiddleWare(c *gin.Context) {
// 验证cookie签名是否合法
gpaTokenStr := c.GetHeader(HeaderKeyAuth)
if gpaTokenStr == "" {
gpaTokenStr, _ = c.Cookie(CookieKeyGpa)
}
if gpaTokenStr == "" {
log.Trace(c.GetString(CtxKeyRequestId)).Warnf("no gpaToken found in cookie, reject request to %s", c.Request.RequestURI)
// ClearLogin(c)
JsonErr(c, ErrNotLogin)
c.Abort()
return
}
gpaToken, err := decodeGpaFromJwtClaim(gpaTokenStr)
// gpaToken, err := verifyFromCookie(c)
if err != nil {
log.Trace(c.GetString(CtxKeyRequestId)).Warnf("illegal gpaToken , reject request, error:%v gpatoken:%+v", err, gpaToken)
// c.SetCookie(CookieKeyGpa, "", -1, "", "", true, false)
JsonErr(c, ErrNotLogin)
c.Abort()
return
}
if gpaToken.LoginAt < int(time.Now().Add(-time.Second*LoginCookieExpire).Unix()) {
// ClearLogin(c)
JsonErr(c, ErrLoginExpired)
c.Abort()
return
}
//mgrEnt := &dao.Manager{}
mgrEnt, err := dao.GetManagerById(gpaToken.Mid)
if err != nil {
log.Errorf("query by mid:%d failed:%v", gpaToken.Mid, err)
JsonErr(c, ErrMgrNotExist)
c.Abort()
return
}
if mgrEnt == nil {
log.Warnf("登陆账号%d不存在", gpaToken.Mid)
JsonErr(c, ErrMgrNotExist)
c.Abort()
return
}
gpaToken.RoleId = mgrEnt.RoleId
gpaToken.MgrEnt = mgrEnt
//gpaToken.RoleName = mgrEnt.RoleName
// gpaToken.IsSuper = mgrEnt.IsSuper()
// gpaToken.IsSuperRole = mgrEnt.IsSuperRole()
// 判断账号是否已被禁用
if mgrEnt.Status != base.StatusNormal {
log.Warnf("登陆账号(%d)已被禁用", gpaToken.Mid)
// ClearLogin(c)
JsonErr(c, ErrMgrDisabled)
c.Abort()
return
}
// set context
c.Set(CtxKeyGpa, gpaToken)
c.Next()
}
func RbacAuthMiddleWare(c *gin.Context) {
requestId := c.GetString(CtxKeyRequestId)
gpaToken := getLoginInfo(c)
if gpaToken.MgrEnt.IsSuper == 1 {
c.Next()
return
}
// 基于角色鉴权
//roleEnt, err := roles.QueryByRid(gpaToken.RoleId)
roleEnt, err := dao.GetRoleById(gpaToken.MgrEnt.RoleId)
if err != nil || roleEnt == nil || roleEnt.Status != base.StatusNormal {
log.Trace(requestId).Errorf("get role(%d) failed:%v", gpaToken.RoleId, err)
JsonErr(c, ErrRoleNotExist)
c.Abort()
return
}
//
if roleEnt.IsSuper() {
// 超级管理忽略权限
c.Next()
return
}
//
if !roleEnt.Permit.CheckRouteAccessable(c.Request.RequestURI) {
log.Trace(requestId).Errorf("no access, roleid:%d route:%s", gpaToken.RoleId, c.Request.RequestURI)
JsonErr(c, ErrNoPermit)
c.Abort()
return
}
// log.Trace(requestId).Debugf("access allowed")
c.Next()
}
// 接口调用未出错时,标准输出必须调用的接口
func JsonOk(c *gin.Context, data interface{}) {
JsonResponse(c, ErrSuccess, "", data)
}
// 接口调用出错时,标准输出必须调用的接口
func JsonErr(c *gin.Context, code string) {
JsonResponse(c, code, CodeToMessage(code), "")
}
func JsonErrMsg(c *gin.Context, code string, errMsg string) {
JsonResponse(c, code, errMsg, "")
}
func JsonResponse(c *gin.Context, code, msg string, data interface{}) {
requestId := c.GetString(CtxKeyRequestId)
codeMsg := CodeToMessage(code)
if msg != "" {
codeMsg += "(" + msg + ")"
}
resp := map[string]interface{}{
"errcode": code,
"errmsg": codeMsg,
"errlevel": "alert",
"LoginInfo": getLoginInfo(c),
"IsLogin": isLoginIn(c),
"result": data,
"requestId": requestId,
}
c.JSON(http.StatusOK, resp)
b, _ := json.Marshal(resp)
log.Trace(requestId).Debugf("==========DEBUG - URI:%s 应答:%+s", c.GetString(CtxKeyURI), b)
// log.Trace(requestId).Infof("URI:%s 应答:%+v", c.GetString(CtxKeyURI), resp)
}
// 此方法必须提前验证cookie 就是前文必须调用过verifyFromCookie,此方法才有效
func getLoginInfo(c *gin.Context) *GpaToken {
loginInfoIf, _ := c.Get(CtxKeyGpa)
loginInfo, ok := loginInfoIf.(*GpaToken)
if !ok {
log.Warnf("gpatoken not exist, invalid type")
}
if loginInfo == nil {
log.Warnf("gpatoken not exist, empty value")
}
return loginInfo
}
func isLoginIn(c *gin.Context) bool {
return getLoginInfo(c) != nil
}
// 验证cookie合法性 并返回有效的登录信息
// func verifyFromCookie(c *gin.Context) (*GpaToken, error) {
// // gopay admin token
// gpaTokenStr, err := c.Cookie(CookieKeyGpa)
// if gpaTokenStr == "" {
// return nil, err
// }
// // // gopay admin sign
// // gpaSignStr, err := c.Cookie(CookieKeySign)
// // if err != nil {
// // return nil, err
// // }
// // jwtToken, err := jwt.Parse(gpaTokenStr, func(token *jwt.Token) (interface{}, error) {
// // return []byte(CookieKeySalt), nil
// // })
// // if err != nil || jwtToken == nil {
// // log.Warnf("get jwtToken failed, error:%v", err)
// // return nil, err
// // }
// // log.Debugf("jwtToken:%+v", jwtToken)
// gpaToken, err := decodeGpaFromJwtClaim(jwtToken.Claims.(jwt.MapClaims))
// if err != nil {
// log.Warnf("get gpaToken from jwt failed, error:%v", err)
// return nil, err
// }
// return gpaToken, nil
// }