mirror of
https://github.com/simple-login/app.git
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102 lines
3.4 KiB
Python
102 lines
3.4 KiB
Python
import json
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import secrets
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import uuid
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import webauthn
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from flask import render_template, flash, redirect, url_for, session
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from flask_login import login_required, current_user
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from flask_wtf import FlaskForm
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from wtforms import HiddenField, validators
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from app.config import RP_ID, URL
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from app.dashboard.base import dashboard_bp
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from app.extensions import db
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from app.log import LOG
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class FidoTokenForm(FlaskForm):
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sk_assertion = HiddenField("sk_assertion", validators=[validators.DataRequired()])
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@dashboard_bp.route("/fido_setup", methods=["GET", "POST"])
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@login_required
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def fido_setup():
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if current_user.fido_enabled():
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flash("You have already registered your security key", "warning")
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return redirect(url_for("dashboard.index"))
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if not current_user.can_use_fido:
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flash(
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"This feature is currently in invitation-only beta. Please send us an email if you want to try",
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"warning",
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)
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return redirect(url_for("dashboard.index"))
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fido_token_form = FidoTokenForm()
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# Handling POST requests
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if fido_token_form.validate_on_submit():
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try:
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sk_assertion = json.loads(fido_token_form.sk_assertion.data)
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except Exception as e:
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flash("Key registration failed. Error: Invalid Payload", "warning")
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return redirect(url_for("dashboard.index"))
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fido_uuid = session["fido_uuid"]
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challenge = session["fido_challenge"]
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fido_reg_response = webauthn.WebAuthnRegistrationResponse(
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RP_ID,
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URL,
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sk_assertion,
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challenge,
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trusted_attestation_cert_required=False,
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none_attestation_permitted=True,
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)
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try:
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fido_credential = fido_reg_response.verify()
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except Exception as e:
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LOG.error(f"An error occurred in WebAuthn registration process: {e}")
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flash("Key registration failed.", "warning")
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return redirect(url_for("dashboard.index"))
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current_user.fido_pk = str(fido_credential.public_key, "utf-8")
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current_user.fido_uuid = fido_uuid
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current_user.fido_sign_count = fido_credential.sign_count
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current_user.fido_credential_id = str(fido_credential.credential_id, "utf-8")
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db.session.commit()
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flash("Security key has been activated", "success")
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return redirect(url_for("dashboard.index"))
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# Prepare information for key registration process
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fido_uuid = str(uuid.uuid4())
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challenge = secrets.token_urlsafe(32)
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credential_create_options = webauthn.WebAuthnMakeCredentialOptions(
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challenge,
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"SimpleLogin",
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RP_ID,
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fido_uuid,
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current_user.email,
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current_user.name if current_user.name else current_user.email,
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False,
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attestation="none",
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user_verification="discouraged",
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)
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# Don't think this one should be used, but it's not configurable by arguments
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# https://www.w3.org/TR/webauthn/#sctn-location-extension
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registration_dict = credential_create_options.registration_dict
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del registration_dict["extensions"]["webauthn.loc"]
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session["fido_uuid"] = fido_uuid
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session["fido_challenge"] = challenge.rstrip("=")
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return render_template(
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"dashboard/fido_setup.html",
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fido_token_form=fido_token_form,
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credential_create_options=registration_dict,
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)
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