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Only allow token authentication with 2FA enabled (#2184)

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* Don't allow for plain username/password authentication when 2FA is enabled

* Removed debugging statement

* Don't assume a token belongs to a given user, handle two-factor errors properly

* Simplified user/token matching, refactored error handling for two-factor authentication

* Change authentication response to avoid bruteforcing

* Add TODO item as a comment for changing the response for security purposes
This commit is contained in:
Moritz Heiber 2017-07-26 09:33:16 +02:00 committed by Lunny Xiao
parent 1d032f5220
commit 7e12aac61c
1 changed files with 32 additions and 6 deletions
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38
routers/repo/http.go
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@ -156,24 +156,50 @@ func HTTP(ctx *context.Context) {
ctx.Handle(http.StatusInternalServerError, "UserSignIn error: %v", err)
return
}
}
// Assume username now is a token.
token, err := models.GetAccessTokenBySHA(authUsername)
if authUser == nil {
authUser, err = models.GetUserByName(authUsername)
if err != nil {
if models.IsErrUserNotExist(err) {
ctx.HandleText(http.StatusUnauthorized, "invalid credentials")
} else {
ctx.Handle(http.StatusInternalServerError, "GetUserByName", err)
}
return
}
// Assume password is a token.
token, err := models.GetAccessTokenBySHA(authPasswd)
if err != nil {
if models.IsErrAccessTokenNotExist(err) || models.IsErrAccessTokenEmpty(err) {
ctx.HandleText(http.StatusUnauthorized, "invalid token")
ctx.HandleText(http.StatusUnauthorized, "invalid credentials")
} else {
ctx.Handle(http.StatusInternalServerError, "GetAccessTokenBySha", err)
}
return
}
if authUser.ID != token.UID {
ctx.HandleText(http.StatusUnauthorized, "invalid credentials")
return
}
token.Updated = time.Now()
if err = models.UpdateAccessToken(token); err != nil {
ctx.Handle(http.StatusInternalServerError, "UpdateAccessToken", err)
}
authUser, err = models.GetUserByID(token.UID)
if err != nil {
ctx.Handle(http.StatusInternalServerError, "GetUserByID", err)
} else {
_, err = models.GetTwoFactorByUID(authUser.ID)
if err == nil {
// TODO: This response should be changed to "invalid credentials" for security reasons once the expectation behind it (creating an app token to authenticate) is properly documented
ctx.HandleText(http.StatusUnauthorized, "Users with two-factor authentication enabled cannot perform HTTP/HTTPS operations via plain username and password. Please create and use a personal access token on the user settings page")
return
} else if !models.IsErrTwoFactorNotEnrolled(err) {
ctx.Handle(http.StatusInternalServerError, "IsErrTwoFactorNotEnrolled", err)
return
}
}