106 lines
3.4 KiB
Python
106 lines
3.4 KiB
Python
from django.db import models
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from django.contrib.auth.models import BaseUserManager, AbstractBaseUser
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from nacl import secret, pwhash
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class UserManager(BaseUserManager):
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def create_user(self, email, password=None):
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"""
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Creates and saves a User with the given email, date of
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birth and password.
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"""
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if not email:
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raise ValueError("Users must have an email address")
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user = self.model(
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email=self.normalize_email(email),
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)
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user.set_password(password)
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user.save(using=self._db)
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return user
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def create_superuser(self, email, password=None):
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"""
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Creates and saves a superuser with the given email, date of
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birth and password.
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"""
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user = self.create_user(
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email,
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password=password,
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)
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user.is_admin = True
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user.save(using=self._db)
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return user
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class User(AbstractBaseUser):
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email = models.EmailField(
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verbose_name="email address",
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max_length=255,
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unique=True,
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)
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is_active = models.BooleanField(default=True)
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is_admin = models.BooleanField(default=False)
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first_name = models.CharField(max_length=255, blank=True, null=True)
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last_name = models.CharField(max_length=255, blank=True, null=True)
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# TODO: Hay que generar una clave aleatoria para cada usuario cuando se le da de alta en el sistema.
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encrypted_sensitive_data_encryption_key = models.BinaryField(max_length=255)
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# TODO: Hay que generar un salt aleatorio para cada usuario cuando se le da de alta en el sistema.
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salt_of_sensitive_data_encryption_key = models.BinaryField(max_length=255)
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objects = UserManager()
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USERNAME_FIELD = "email"
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REQUIRED_FIELDS = []
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def __str__(self):
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return self.email
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def has_perm(self, perm, obj=None):
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"Does the user have a specific permission?"
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# Simplest possible answer: Yes, always
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return True
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def has_module_perms(self, app_label):
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"Does the user have permissions to view the app `app_label`?"
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# Simplest possible answer: Yes, always
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return True
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@property
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def is_staff(self):
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"Is the user a member of staff?"
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# Simplest possible answer: All admins are staff
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return self.is_admin
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@property
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def username(self):
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"Is the email of the user"
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return self.email
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def get_memberships(self):
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members = set(
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str(dict(x.Types.choices)[x.type]) for x in self.memberships.all()
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)
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return ", ".join(members)
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def get_roles(self):
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roles = []
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for s in self.roles.all():
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for r in s.service.rol.all():
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roles.append(r.name)
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return ", ".join(set(roles))
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def derive_key_from_password(self, password):
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kdf = pwhash.argon2i.kdf # TODO: Move the KDF choice to SETTINGS.PY
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ops = pwhash.argon2i.OPSLIMIT_INTERACTIVE # TODO: Move the KDF choice to SETTINGS.PY
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mem = pwhash.argon2i.MEMLIMIT_INTERACTIVE # TODO: Move the KDF choice to SETTINGS.PY
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salt = self.salt_of_sensitive_data_encryption_key
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return kdf(secret.SecretBox.KEY_SIZE, password, salt, opslimit=ops, memlimit=mem)
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def decrypt_sensitive_data_encryption_key(self, password):
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sb_key = self.derive_key_from_password(password)
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sb = secret.SecretBox(sb_key)
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return sb.decrypt(self.encrypted_sensitive_data_encryption_key)
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