mirror of
https://github.com/retspen/webvirtcloud
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72681ab54e
django-qr-code was used for one thing: the QR code in the OTP e-mail, as an inline SVG and a PNG. It brought pydantic, pydantic-core, annotated-types and typing-inspection (about 10 MB) and, from 5.0 on, Pillow. segno, which it used underneath, now draws both images with the same options (error correction M, 4-module border, 1.8 mm SVG modules, 12 px PNG modules); the SVG, the PNG and the alt text are byte for byte what django-qr-code 4.2 produced. account.html loaded the tag library without using it.
79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
import base64
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import binascii
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import struct
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from decimal import Decimal
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import segno
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from django.core.mail import send_mail
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from django.template.loader import render_to_string
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from django.utils.safestring import mark_safe
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from django.utils.translation import gettext as _
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from django_otp import devices_for_user
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from django_otp.plugins.otp_totp.models import TOTPDevice
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def get_existing_totp_device(user):
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"""The user's confirmed TOTP device, or None. Unlike get_user_totp_device
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it never creates one, so an unauthenticated caller cannot turn a
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password-only account into an OTP-required one."""
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for device in devices_for_user(user, confirmed=True):
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if isinstance(device, TOTPDevice):
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return device
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return None
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def get_user_totp_device(user):
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devices = devices_for_user(user)
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for device in devices:
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if isinstance(device, TOTPDevice):
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return device
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device = user.totpdevice_set.create()
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return device
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def validate_ssh_key(key):
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array = key.strip().encode().split()
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# An OpenSSH public key has 2 parts (type, key) or 3 parts (type, key, comment).
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if len(array) not in (2, 3):
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return False
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typeofkey = array[0]
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string = array[1]
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# must have only valid rsa-ssh key characters ie binascii characters
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try:
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data = base64.decodebytes(string)
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except binascii.Error:
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return False
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# unpack the contents of data, from data[:4] , property of ssh key .
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try:
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str_len = struct.unpack(">I", data[:4])[0]
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except struct.error:
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return False
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# data[4:str_len] must have string which matches with the typeofkey, another ssh key property.
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if data[4 : 4 + str_len] != typeofkey:
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return False
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return True
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def send_email_with_otp(user, device):
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# An inline SVG (1.8 mm modules) and, for mail clients that show no SVG,
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# a PNG (12 px modules); error correction M, 4-module border.
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qr = segno.make(device.config_url, error="m", mode="byte", encoding="utf-8", micro=False)
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style = {"border": 4, "dark": "black", "light": "white"}
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send_mail(
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_("OTP QR Code"),
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_("Please view HTML version of this message."),
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None,
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[user.email],
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html_message=render_to_string(
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"accounts/email/otp.html",
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{
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"totp_url": device.config_url,
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"user": user,
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"qr_svg": mark_safe(qr.svg_inline(scale=Decimal("1.8"), unit="mm", **style)),
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"qr_png": qr.png_data_uri(scale=12, **style),
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},
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),
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fail_silently=False,
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)
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