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gitea/routers/web/user/setting/security/webauthn.go
Rowan Bohde 1ee59f0fa3
Allow disabling authentication related user features (#31535)
We have some instances that only allow using an external authentication
source for authentication. In this case, users changing their email,
password, or linked OpenID connections will not have any effect, and
we'd like to prevent showing that to them to prevent confusion.

Included in this are several changes to support this:
* A new setting to disable user managed authentication credentials
(email, password & OpenID connections)
* A new setting to disable user managed MFA (2FA codes & WebAuthn)
* Fix an issue where some templates had separate logic for determining
if a feature was disabled since it didn't check the globally disabled
features
* Hide more user setting pages in the navbar when their settings aren't
enabled

---------

Co-authored-by: Kyle D <kdumontnu@gmail.com>
2024-07-09 17:36:31 +00:00

139 lines
4.0 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package security
import (
"errors"
"net/http"
"strconv"
"time"
"code.gitea.io/gitea/models/auth"
user_model "code.gitea.io/gitea/models/user"
wa "code.gitea.io/gitea/modules/auth/webauthn"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/forms"
"github.com/go-webauthn/webauthn/protocol"
"github.com/go-webauthn/webauthn/webauthn"
)
// WebAuthnRegister initializes the webauthn registration procedure
func WebAuthnRegister(ctx *context.Context) {
if user_model.IsFeatureDisabledWithLoginType(ctx.Doer, setting.UserFeatureManageMFA) {
ctx.Error(http.StatusNotFound)
return
}
form := web.GetForm(ctx).(*forms.WebauthnRegistrationForm)
if form.Name == "" {
// Set name to the hexadecimal of the current time
form.Name = strconv.FormatInt(time.Now().UnixNano(), 16)
}
cred, err := auth.GetWebAuthnCredentialByName(ctx, ctx.Doer.ID, form.Name)
if err != nil && !auth.IsErrWebAuthnCredentialNotExist(err) {
ctx.ServerError("GetWebAuthnCredentialsByUID", err)
return
}
if cred != nil {
ctx.Error(http.StatusConflict, "Name already taken")
return
}
_ = ctx.Session.Delete("webauthnRegistration")
if err := ctx.Session.Set("webauthnName", form.Name); err != nil {
ctx.ServerError("Unable to set session key for webauthnName", err)
return
}
credentialOptions, sessionData, err := wa.WebAuthn.BeginRegistration((*wa.User)(ctx.Doer), webauthn.WithAuthenticatorSelection(protocol.AuthenticatorSelection{
ResidentKey: protocol.ResidentKeyRequirementRequired,
}))
if err != nil {
ctx.ServerError("Unable to BeginRegistration", err)
return
}
// Save the session data as marshaled JSON
if err = ctx.Session.Set("webauthnRegistration", sessionData); err != nil {
ctx.ServerError("Unable to set session", err)
return
}
ctx.JSON(http.StatusOK, credentialOptions)
}
// WebauthnRegisterPost receives the response of the security key
func WebauthnRegisterPost(ctx *context.Context) {
if user_model.IsFeatureDisabledWithLoginType(ctx.Doer, setting.UserFeatureManageMFA) {
ctx.Error(http.StatusNotFound)
return
}
name, ok := ctx.Session.Get("webauthnName").(string)
if !ok || name == "" {
ctx.ServerError("Get webauthnName", errors.New("no webauthnName"))
return
}
// Load the session data
sessionData, ok := ctx.Session.Get("webauthnRegistration").(*webauthn.SessionData)
if !ok || sessionData == nil {
ctx.ServerError("Get registration", errors.New("no registration"))
return
}
defer func() {
_ = ctx.Session.Delete("webauthnRegistration")
}()
// Verify that the challenge succeeded
cred, err := wa.WebAuthn.FinishRegistration((*wa.User)(ctx.Doer), *sessionData, ctx.Req)
if err != nil {
if pErr, ok := err.(*protocol.Error); ok {
log.Error("Unable to finish registration due to error: %v\nDevInfo: %s", pErr, pErr.DevInfo)
}
ctx.ServerError("CreateCredential", err)
return
}
dbCred, err := auth.GetWebAuthnCredentialByName(ctx, ctx.Doer.ID, name)
if err != nil && !auth.IsErrWebAuthnCredentialNotExist(err) {
ctx.ServerError("GetWebAuthnCredentialsByUID", err)
return
}
if dbCred != nil {
ctx.Error(http.StatusConflict, "Name already taken")
return
}
// Create the credential
_, err = auth.CreateCredential(ctx, ctx.Doer.ID, name, cred)
if err != nil {
ctx.ServerError("CreateCredential", err)
return
}
_ = ctx.Session.Delete("webauthnName")
ctx.JSON(http.StatusCreated, cred)
}
// WebauthnDelete deletes an security key by id
func WebauthnDelete(ctx *context.Context) {
if user_model.IsFeatureDisabledWithLoginType(ctx.Doer, setting.UserFeatureManageMFA) {
ctx.Error(http.StatusNotFound)
return
}
form := web.GetForm(ctx).(*forms.WebauthnDeleteForm)
if _, err := auth.DeleteCredential(ctx, form.ID, ctx.Doer.ID); err != nil {
ctx.ServerError("GetWebAuthnCredentialByID", err)
return
}
ctx.JSONRedirect(setting.AppSubURL + "/user/settings/security")
}