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authenticator.go
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/
authenticator.go
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package auth
import (
"fmt"
"net/http"
"strings"
"time"
"github.com/astaxie/beego"
"github.com/dgrijalva/jwt-go"
"golang.org/x/oauth2"
rsakey "github.com/Qihoo360/wayne/src/backend/apikey"
"github.com/Qihoo360/wayne/src/backend/controllers/base"
"github.com/Qihoo360/wayne/src/backend/models"
"github.com/Qihoo360/wayne/src/backend/models/response/errors"
selfoauth "github.com/Qihoo360/wayne/src/backend/oauth2"
"github.com/Qihoo360/wayne/src/backend/util/hack"
"github.com/Qihoo360/wayne/src/backend/util/logs"
)
// Authenticator provides interface to authenticate user credentials.
type Authenticator interface {
// Authenticate ...
Authenticate(m models.AuthModel) (*models.User, error)
}
var registry = make(map[string]Authenticator)
// Register add different authenticators to registry map.
func Register(name string, authenticator Authenticator) {
if _, dup := registry[name]; dup {
logs.Info("authenticator: %s has been registered", name)
return
}
registry[name] = authenticator
}
// AuthController operations for Auth
type AuthController struct {
beego.Controller
}
// URLMapping ...
func (c *AuthController) URLMapping() {
c.Mapping("Login", c.Login)
c.Mapping("Logout", c.Logout)
c.Mapping("CurrentUser", c.CurrentUser)
}
type LoginResult struct {
Token string `json:"token"`
}
// type is login type
// name when login type is oauth2 used for oauth2 type
// @router /login/:type/?:name [get,post]
func (c *AuthController) Login() {
username := c.Input().Get("username")
password := c.Input().Get("password")
authType := c.Ctx.Input.Param(":type")
oauth2Name := c.Ctx.Input.Param(":name")
next := c.Ctx.Input.Query("next")
if authType == "" || username == "admin" {
authType = models.AuthTypeDB
}
logs.Info("auth type is", authType)
authenticator, ok := registry[authType]
if !ok {
logs.Warning("auth type (%s) is not supported . ", authType)
c.Ctx.Output.SetStatus(http.StatusBadRequest)
c.Ctx.Output.Body(hack.Slice(fmt.Sprintf("auth type (%s) is not supported.", authType)))
return
}
authModel := models.AuthModel{
Username: username,
Password: password,
}
if authType == models.AuthTypeOAuth2 {
oauther, ok := selfoauth.OAutherMap[oauth2Name]
if !ok {
logs.Warning("oauth2 type (%s) is not supported . ", oauth2Name)
c.Ctx.Output.SetStatus(http.StatusBadRequest)
c.Ctx.Output.Body(hack.Slice("oauth2 type is not supported."))
return
}
code := c.Input().Get("code")
if code == "" {
c.Ctx.Redirect(http.StatusFound, oauther.AuthCodeURL(next, oauth2.AccessTypeOnline))
return
}
authModel.OAuth2Code = code
authModel.OAuth2Name = oauth2Name
state := c.Ctx.Input.Query("state")
if state != "" {
next = state
}
}
user, err := authenticator.Authenticate(authModel)
if err != nil {
logs.Warning("try to login in with user (%s) error %v. ", authModel.Username, err)
c.Ctx.Output.SetStatus(http.StatusBadRequest)
c.Ctx.Output.Body(hack.Slice(fmt.Sprintf("Login failed. %v", err)))
return
}
now := time.Now()
user.LastIp = c.Ctx.Input.IP()
user.LastLogin = &now
user, err = models.UserModel.EnsureUser(user)
if err != nil {
c.Ctx.Output.SetStatus(http.StatusInternalServerError)
c.Ctx.Output.Body(hack.Slice(err.Error()))
return
}
// default token exp time is 3600s.
expSecond := beego.AppConfig.DefaultInt64("TokenLifeTime", 86400)
token := jwt.NewWithClaims(jwt.SigningMethodRS256, jwt.MapClaims{
// 签发者
"iss": "wayne",
// 签发时间
"iat": now.Unix(),
"exp": now.Add(time.Duration(expSecond) * time.Second).Unix(),
"aud": user.Name,
})
apiToken, err := token.SignedString(rsakey.RsaPrivateKey)
if err != nil {
logs.Error("create token form rsa private key error.", rsakey.RsaPrivateKey, err.Error())
c.Ctx.Output.SetStatus(http.StatusInternalServerError)
c.Ctx.Output.Body(hack.Slice(err.Error()))
return
}
if next != "" {
// if oauth type is oauth, set token for client.
if authType == models.AuthTypeOAuth2 {
next = next + "&sid=" + apiToken
}
c.Redirect(next, http.StatusFound)
return
}
loginResult := LoginResult{
Token: apiToken,
}
c.Data["json"] = base.Result{Data: loginResult}
c.ServeJSON()
}
// @router /logout [get]
func (c *AuthController) Logout() {
}
// @router /currentuser [get]
func (c *AuthController) CurrentUser() {
c.Controller.Prepare()
authString := c.Ctx.Input.Header("Authorization")
kv := strings.Split(authString, " ")
if len(kv) != 2 || kv[0] != "Bearer" {
logs.Error("AuthString invalid:", authString)
c.CustomAbort(http.StatusUnauthorized, "Token Invalid ! ")
}
tokenString := kv[1]
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
// since we only use the one private key to sign the tokens,
// we also only use its public counter part to verify
return rsakey.RsaPublicKey, nil
})
errResult := errors.ErrorResult{}
switch err.(type) {
case nil: // no error
if !token.Valid { // but may still be invalid
errResult.Code = http.StatusUnauthorized
errResult.Msg = "Token Invalid ! "
}
case *jwt.ValidationError: // something was wrong during the validation
errResult.Code = http.StatusUnauthorized
errResult.Msg = err.Error()
default: // something else went wrong
errResult.Code = http.StatusInternalServerError
errResult.Msg = err.Error()
}
if err != nil {
c.CustomAbort(errResult.Code, errResult.Msg)
}
claim := token.Claims.(jwt.MapClaims)
aud := claim["aud"].(string)
user, err := models.UserModel.GetUserDetail(aud)
if err != nil {
c.CustomAbort(http.StatusInternalServerError, err.Error())
}
c.Data["json"] = base.Result{Data: user}
c.ServeJSON()
}