app-MAIL-temp/app/dashboard/views/mailbox_detail.py

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from smtplib import SMTPRecipientsRefused
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from flask import render_template, request, redirect, url_for, flash
from flask_login import login_required, current_user
from flask_wtf import FlaskForm
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from itsdangerous import Signer
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from wtforms import validators
from wtforms.fields.html5 import EmailField
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from app.config import ENFORCE_SPF, MAILBOX_SECRET
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from app.config import URL
from app.dashboard.base import dashboard_bp
from app.db import Session
from app.email_utils import email_can_be_used_as_mailbox
from app.email_utils import mailbox_already_used, render, send_email
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from app.log import LOG
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from app.models import Alias, AuthorizedAddress
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from app.models import Mailbox
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from app.pgp_utils import PGPException, load_public_key_and_check
from app.utils import sanitize_email, CSRFValidationForm
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class ChangeEmailForm(FlaskForm):
email = EmailField(
"email", validators=[validators.DataRequired(), validators.Email()]
)
@dashboard_bp.route("/mailbox/<int:mailbox_id>/", methods=["GET", "POST"])
@login_required
def mailbox_detail_route(mailbox_id):
mailbox = Mailbox.get(mailbox_id)
if not mailbox or mailbox.user_id != current_user.id:
flash("You cannot see this page", "warning")
return redirect(url_for("dashboard.index"))
change_email_form = ChangeEmailForm()
csrf_form = CSRFValidationForm()
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if mailbox.new_email:
pending_email = mailbox.new_email
else:
pending_email = None
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if request.method == "POST":
if not csrf_form.validate():
flash("Invalid request", "warning")
return redirect(request.url)
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if (
request.form.get("form-name") == "update-email"
and change_email_form.validate_on_submit()
):
new_email = sanitize_email(change_email_form.email.data)
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if new_email != mailbox.email and not pending_email:
# check if this email is not already used
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if mailbox_already_used(new_email, current_user) or Alias.get_by(
email=new_email
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):
flash(f"Email {new_email} already used", "error")
elif not email_can_be_used_as_mailbox(new_email):
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flash("You cannot use this email address as your mailbox", "error")
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else:
mailbox.new_email = new_email
Session.commit()
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try:
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verify_mailbox_change(current_user, mailbox, new_email)
except SMTPRecipientsRefused:
flash(
f"Incorrect mailbox, please recheck {mailbox.email}",
"error",
)
else:
flash(
f"You are going to receive an email to confirm {new_email}.",
"success",
)
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return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
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elif request.form.get("form-name") == "force-spf":
if not ENFORCE_SPF:
flash("SPF enforcement globally not enabled", "error")
return redirect(url_for("dashboard.index"))
mailbox.force_spf = (
True if request.form.get("spf-status") == "on" else False
)
Session.commit()
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flash(
"SPF enforcement was " + "enabled"
if request.form.get("spf-status")
else "disabled" + " successfully",
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"success",
)
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return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
elif request.form.get("form-name") == "add-authorized-address":
address = sanitize_email(request.form.get("email"))
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if AuthorizedAddress.get_by(mailbox_id=mailbox.id, email=address):
flash(f"{address} already added", "error")
else:
AuthorizedAddress.create(
user_id=current_user.id,
mailbox_id=mailbox.id,
email=address,
commit=True,
)
flash(f"{address} added as authorized address", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
elif request.form.get("form-name") == "delete-authorized-address":
authorized_address_id = request.form.get("authorized-address-id")
authorized_address: AuthorizedAddress = AuthorizedAddress.get(
authorized_address_id
)
if not authorized_address or authorized_address.mailbox_id != mailbox.id:
flash("Unknown error. Refresh the page", "warning")
else:
address = authorized_address.email
AuthorizedAddress.delete(authorized_address_id)
Session.commit()
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flash(f"{address} has been deleted", "success")
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return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
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elif request.form.get("form-name") == "pgp":
if request.form.get("action") == "save":
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if not current_user.is_premium():
flash("Only premium plan can add PGP Key", "warning")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
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mailbox.pgp_public_key = request.form.get("pgp")
try:
mailbox.pgp_finger_print = load_public_key_and_check(
mailbox.pgp_public_key
)
except PGPException:
flash("Cannot add the public key, please verify it", "error")
else:
Session.commit()
flash("Your PGP public key is saved successfully", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
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elif request.form.get("action") == "remove":
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# Free user can decide to remove their added PGP key
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mailbox.pgp_public_key = None
mailbox.pgp_finger_print = None
mailbox.disable_pgp = False
Session.commit()
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flash("Your PGP public key is removed successfully", "success")
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return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
elif request.form.get("form-name") == "toggle-pgp":
if request.form.get("pgp-enabled") == "on":
mailbox.disable_pgp = False
flash(f"PGP is enabled on {mailbox.email}", "success")
else:
mailbox.disable_pgp = True
flash(f"PGP is disabled on {mailbox.email}", "info")
Session.commit()
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
elif request.form.get("form-name") == "generic-subject":
if request.form.get("action") == "save":
if not mailbox.pgp_enabled():
flash(
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"Generic subject can only be used on PGP-enabled mailbox",
"error",
)
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
mailbox.generic_subject = request.form.get("generic-subject")
Session.commit()
flash("Generic subject for PGP-encrypted email is enabled", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
elif request.form.get("action") == "remove":
mailbox.generic_subject = None
Session.commit()
flash("Generic subject for PGP-encrypted email is disabled", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
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spf_available = ENFORCE_SPF
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return render_template("dashboard/mailbox_detail.html", **locals())
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def verify_mailbox_change(user, mailbox, new_email):
s = Signer(MAILBOX_SECRET)
mailbox_id_signed = s.sign(str(mailbox.id)).decode()
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verification_url = (
f"{URL}/dashboard/mailbox/confirm_change?mailbox_id={mailbox_id_signed}"
)
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send_email(
new_email,
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"Confirm mailbox change on SimpleLogin",
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render(
"transactional/verify-mailbox-change.txt.jinja2",
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user=user,
link=verification_url,
mailbox_email=mailbox.email,
mailbox_new_email=new_email,
),
render(
"transactional/verify-mailbox-change.html",
user=user,
link=verification_url,
mailbox_email=mailbox.email,
mailbox_new_email=new_email,
),
)
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@dashboard_bp.route(
"/mailbox/<int:mailbox_id>/cancel_email_change", methods=["GET", "POST"]
)
@login_required
def cancel_mailbox_change_route(mailbox_id):
mailbox = Mailbox.get(mailbox_id)
if not mailbox or mailbox.user_id != current_user.id:
flash("You cannot see this page", "warning")
return redirect(url_for("dashboard.index"))
if mailbox.new_email:
mailbox.new_email = None
Session.commit()
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flash("Your mailbox change is cancelled", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
else:
flash("You have no pending mailbox change", "warning")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
)
@dashboard_bp.route("/mailbox/confirm_change")
def mailbox_confirm_change_route():
s = Signer(MAILBOX_SECRET)
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signed_mailbox_id = request.args.get("mailbox_id")
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try:
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mailbox_id = int(s.unsign(signed_mailbox_id))
except Exception:
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flash("Invalid link", "error")
return redirect(url_for("dashboard.index"))
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else:
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mailbox = Mailbox.get(mailbox_id)
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# new_email can be None if user cancels change in the meantime
if mailbox and mailbox.new_email:
user = mailbox.user
if Mailbox.get_by(email=mailbox.new_email, user_id=user.id):
flash(f"{mailbox.new_email} is already used", "error")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox.id)
)
mailbox.email = mailbox.new_email
mailbox.new_email = None
# mark mailbox as verified if the change request is sent from an unverified mailbox
mailbox.verified = True
Session.commit()
LOG.d("Mailbox change %s is verified", mailbox)
flash(f"The {mailbox.email} is updated", "success")
return redirect(
url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox.id)
)
else:
flash("Invalid link", "error")
return redirect(url_for("dashboard.index"))