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"""User authentification """ |
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# pylint: disable=no-name-in-module, no-self-argument |
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import hashlib |
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import os |
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from datetime import datetime |
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from typing import Literal, Optional |
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from pydantic import (BaseModel, EmailStr, Field, ValidationInfo, |
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field_validator) |
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from typing_extensions import Annotated |
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class DocumentBaseModel(BaseModel): |
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"""DocumentBaseModel""" |
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id: str = Field(None, alias="_id") |
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inserted_at: Optional[datetime] = None |
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updated_at: Optional[datetime] = None |
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deleted_at: Optional[datetime] = None |
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def model_dump(self, **kwargs) -> dict: |
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"""Model to dict.""" |
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values = super().model_dump(**kwargs) |
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if "id" in values and values["id"]: |
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values["_id"] = values["id"] |
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if "exclude" in kwargs and "_id" in kwargs["exclude"]: |
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values.pop("_id") |
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return values |
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def hashing(password: bytes, values: dict) -> str: |
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"""Hash password and return it as string""" |
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return hashlib.scrypt(password=password, salt=values['salt'], |
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n=values['n'], r=values['r'], |
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p=values['p']).hex() |
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def validate_password(password: str, values: ValidationInfo): |
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"""Check if password has at least a letter and a number""" |
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upper = False |
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lower = False |
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number = False |
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for char in password: |
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if char.isupper(): |
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upper = True |
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if char.isnumeric(): |
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number = True |
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if char.islower(): |
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lower = True |
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if number and upper and lower: |
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return hashing(password.encode(), values.data['hash'].model_dump()) |
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raise ValueError('value should contain ' + |
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'minimun 8 characters, ' + |
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'at least one upper case character, ' + |
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'at least 1 numeric character [0-9]') |
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class HashSubDoc(BaseModel): |
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"""HashSubDoc. Parameters for hash.scrypt function""" |
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salt: bytes = Field(default=None, validate_default=True) |
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n: int = 8192 |
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r: int = 8 |
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p: int = 1 |
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@field_validator('salt', mode='before') |
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@classmethod |
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def create_salt(cls, salt): |
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"""Create random salt value""" |
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return salt or os.urandom(16) |
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class UserDoc(DocumentBaseModel): |
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"""UserDocumentModel.""" |
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username: str = Field( |
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min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$' |
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) |
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hash: HashSubDoc |
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state: Literal['active', 'inactive'] = 'active' |
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email: EmailStr |
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password: str = Field(min_length=8, max_length=64) |
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_validate_password = field_validator('password')(validate_password) |
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@staticmethod |
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def projection() -> dict: |
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"""Base model for projection.""" |
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return { |
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"_id": 0, |
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"username": 1, |
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"email": 1, |
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'password': 1, |
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'hash': 1, |
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'state': 1, |
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'inserted_at': 1, |
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'updated_at': 1, |
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'deleted_at': 1 |
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} |
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@staticmethod |
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def projection_nopw() -> dict: |
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"""Model for projection without password""" |
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return { |
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"_id": 0, |
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"username": 1, |
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"email": 1, |
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'state': 1, |
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'inserted_at': 1, |
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'updated_at': 1, |
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'deleted_at': 1 |
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} |
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class UserDocUpdate(DocumentBaseModel): |
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"UserDocUpdate use to validate data before updating" |
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username: Optional[Annotated[str, |
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Field(min_length=1, max_length=64, |
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pattern=r'^[a-zA-Z0-9_-]+$')]] = None |
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email: Optional[EmailStr] = None |
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hash: Optional[HashSubDoc] = None |
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password: Optional[Annotated[str, |
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Field(min_length=8, max_length=64)]] = None |
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_validate_password = field_validator('password')(validate_password) |
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kytos-ng /
kytos
