authelia/internal/handlers/handler_sign_u2f_step1.go
James Elliott 3695aa8140
feat(storage): primary key for all tables and general qol refactoring (#2431)
This is a massive overhaul to the SQL Storage for Authelia. It facilitates a whole heap of utility commands to help manage the database, primary keys, ensures all database requests use a context for cancellations, and paves the way for a few other PR's which improve the database.

Fixes #1337
2021-11-23 20:45:38 +11:00

78 lines
2.3 KiB
Go

package handlers
import (
"crypto/elliptic"
"fmt"
"github.com/tstranex/u2f"
"github.com/authelia/authelia/v4/internal/middlewares"
"github.com/authelia/authelia/v4/internal/session"
"github.com/authelia/authelia/v4/internal/storage"
)
// SecondFactorU2FSignGet handler for initiating a signing request.
func SecondFactorU2FSignGet(ctx *middlewares.AutheliaCtx) {
if ctx.XForwardedProto() == nil {
ctx.Error(errMissingXForwardedProto, messageMFAValidationFailed)
return
}
if ctx.XForwardedHost() == nil {
ctx.Error(errMissingXForwardedHost, messageMFAValidationFailed)
return
}
appID := fmt.Sprintf("%s://%s", ctx.XForwardedProto(), ctx.XForwardedHost())
var trustedFacets = []string{appID}
challenge, err := u2f.NewChallenge(appID, trustedFacets)
if err != nil {
handleAuthenticationUnauthorized(ctx, fmt.Errorf("unable to create U2F challenge: %s", err), messageMFAValidationFailed)
return
}
userSession := ctx.GetSession()
device, err := ctx.Providers.StorageProvider.LoadU2FDevice(ctx, userSession.Username)
if err != nil {
if err == storage.ErrNoU2FDeviceHandle {
handleAuthenticationUnauthorized(ctx, fmt.Errorf("no device handle found for user %s", userSession.Username), messageMFAValidationFailed)
return
}
handleAuthenticationUnauthorized(ctx, fmt.Errorf("unable to retrieve U2F device handle: %s", err), messageMFAValidationFailed)
return
}
var registration u2f.Registration
registration.KeyHandle = device.KeyHandle
x, y := elliptic.Unmarshal(elliptic.P256(), device.PublicKey)
registration.PubKey.Curve = elliptic.P256()
registration.PubKey.X = x
registration.PubKey.Y = y
// Save the challenge and registration for use in next request
userSession.U2FRegistration = &session.U2FRegistration{
KeyHandle: device.KeyHandle,
PublicKey: device.PublicKey,
}
userSession.U2FChallenge = challenge
err = ctx.SaveSession(userSession)
if err != nil {
handleAuthenticationUnauthorized(ctx, fmt.Errorf("unable to save U2F challenge and registration in session: %s", err), messageMFAValidationFailed)
return
}
signRequest := challenge.SignRequest([]u2f.Registration{registration})
err = ctx.SetJSONBody(signRequest)
if err != nil {
handleAuthenticationUnauthorized(ctx, fmt.Errorf("unable to set sign request in body: %s", err), messageMFAValidationFailed)
return
}
}