76 lines
2.5 KiB
Python
76 lines
2.5 KiB
Python
import arrow
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from flask import request, render_template, redirect, url_for, flash, session, g
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from flask_login import login_user
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from flask_wtf import FlaskForm
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from wtforms import StringField, validators
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from app.auth.base import auth_bp
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from app.config import MFA_USER_ID
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from app.db import Session
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from app.email_utils import send_invalid_totp_login_email
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from app.extensions import limiter
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from app.log import LOG
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from app.models import User, RecoveryCode
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from app.utils import sanitize_next_url
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class RecoveryForm(FlaskForm):
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code = StringField("Code", validators=[validators.DataRequired()])
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@auth_bp.route("/recovery", methods=["GET", "POST"])
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@limiter.limit(
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"10/minute", deduct_when=lambda r: hasattr(g, "deduct_limit") and g.deduct_limit
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)
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def recovery_route():
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# passed from login page
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user_id = session.get(MFA_USER_ID)
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# user access this page directly without passing by login page
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if not user_id:
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flash("Unknown error, redirect back to main page", "warning")
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return redirect(url_for("auth.login"))
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user = User.get(user_id)
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if not user.two_factor_authentication_enabled():
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flash("Only user with MFA enabled should go to this page", "warning")
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return redirect(url_for("auth.login"))
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recovery_form = RecoveryForm()
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next_url = sanitize_next_url(request.args.get("next"))
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if recovery_form.validate_on_submit():
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code = recovery_form.code.data
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recovery_code = RecoveryCode.find_by_user_code(user, code)
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if recovery_code:
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if recovery_code.used:
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# Trigger rate limiter
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g.deduct_limit = True
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flash("Code already used", "error")
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else:
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del session[MFA_USER_ID]
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login_user(user)
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flash(f"Welcome back!", "success")
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recovery_code.used = True
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recovery_code.used_at = arrow.now()
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Session.commit()
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# User comes to login page from another page
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if next_url:
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LOG.d("redirect user to %s", next_url)
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return redirect(next_url)
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else:
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LOG.d("redirect user to dashboard")
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return redirect(url_for("dashboard.index"))
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else:
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# Trigger rate limiter
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g.deduct_limit = True
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flash("Incorrect code", "error")
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send_invalid_totp_login_email(user, "recovery")
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return render_template("auth/recovery.html", recovery_form=recovery_form)
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