leocrm-bot
7a7daf8100
- 10 models: tenants, users, user_tenants, roles, sessions, audit_log, deletion_log, notifications, password_reset_tokens, api_tokens - Session-based auth (Redis + PostgreSQL audit trail) - Multi-tenant with ORM-level filtering + PostgreSQL RLS (set_config) - RBAC with roles/permissions + field-level permissions - CSRF protection via Origin header validation - Auth rate limiting (Redis counters with TTL) - CORS with explicit origins (no wildcard) - Health endpoint (no auth required) - Notification service + audit log middleware - 29 tests, 26 ACs, all passing - Coverage: 62% (infrastructure modules pending coverage in later tasks)
278 lines
9.3 KiB
Python
278 lines
9.3 KiB
Python
"""Authentication service — login, logout, password reset, session management."""
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from __future__ import annotations
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import hashlib
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import uuid
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from datetime import datetime, timedelta, timezone
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from typing import Any
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import redis.asyncio as aioredis
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.config import get_settings
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from app.core.auth import (
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create_session, get_session_data, hash_password, hash_token,
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invalidate_session, update_session_tenant, verify_password,
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)
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from app.core.audit import log_audit
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from app.models.auth import PasswordResetToken
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from app.models.user import User, UserTenant
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from app.models.tenant import Tenant
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class AuthService:
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"""Handles authentication operations."""
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async def login(
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self,
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db: AsyncSession,
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redis: aioredis.Redis,
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email: str,
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password: str,
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tenant_slug: str | None = None,
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) -> tuple[str, str, User, Tenant] | None:
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"""Authenticate user and create session.
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Returns (session_id, csrf_token, user, tenant) or None.
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"""
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# Find user by email — need to check across tenants or use default tenant
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q = select(User).where(User.email == email, User.is_active == True)
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result = await db.execute(q)
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user = result.scalar_one_or_none()
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if user is None:
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return None
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if not verify_password(password, user.password_hash):
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return None
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# Get user's default tenant or the one matching slug
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ut_q = select(UserTenant).where(UserTenant.user_id == user.id)
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if tenant_slug:
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ut_q = ut_q.join(Tenant, UserTenant.tenant_id == Tenant.id).where(
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Tenant.slug == tenant_slug
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)
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else:
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ut_q = ut_q.where(UserTenant.is_default == True)
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ut_result = await db.execute(ut_q)
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user_tenant = ut_result.scalar_one_or_none()
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# Fallback: just get first tenant membership
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if user_tenant is None:
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ut_q2 = select(UserTenant).where(UserTenant.user_id == user.id)
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ut_result2 = await db.execute(ut_q2)
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user_tenant = ut_result2.scalar_one_or_none()
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if user_tenant is None:
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return None
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tenant_q = select(Tenant).where(Tenant.id == user_tenant.tenant_id)
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tenant_result = await db.execute(tenant_q)
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tenant = tenant_result.scalar_one_or_none()
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if tenant is None:
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return None
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session_id, csrf_token = await create_session(db, redis, user, tenant.id)
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# Log the login in audit trail
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await log_audit(
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db, tenant.id, user.id, "login", "user", user.id,
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changes={"email": email},
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)
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return session_id, csrf_token, user, tenant
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async def logout(self, redis: aioredis.Redis, session_id: str) -> bool:
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"""Invalidate a session."""
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await invalidate_session(redis, session_id)
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return True
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async def get_current_user_info(
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self,
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db: AsyncSession,
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redis: aioredis.Redis,
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session_id: str,
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) -> dict[str, Any] | None:
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"""Get current user info from session."""
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session_data = await get_session_data(redis, session_id)
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if session_data is None:
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return None
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# Fetch tenant name
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tenant_q = select(Tenant).where(Tenant.id == uuid.UUID(session_data["tenant_id"]))
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tenant_result = await db.execute(tenant_q)
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tenant = tenant_result.scalar_one_or_none()
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return {
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"user_id": session_data["user_id"],
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"email": session_data["email"],
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"name": session_data["name"],
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"role": session_data["role"],
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"tenant_id": session_data["tenant_id"],
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"tenant_name": tenant.name if tenant else None,
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}
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async def switch_tenant(
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self,
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db: AsyncSession,
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redis: aioredis.Redis,
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session_id: str,
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new_tenant_id: uuid.UUID,
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) -> dict[str, Any] | None:
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"""Switch the active tenant for the current session."""
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session_data = await get_session_data(redis, session_id)
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if session_data is None:
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return None
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user_id = uuid.UUID(session_data["user_id"])
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# Verify user is member of target tenant
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ut_q = select(UserTenant).where(
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UserTenant.user_id == user_id,
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UserTenant.tenant_id == new_tenant_id,
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)
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ut_result = await db.execute(ut_q)
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if ut_result.scalar_one_or_none() is None:
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return None
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updated = await update_session_tenant(redis, session_id, new_tenant_id)
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if updated is None:
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return None
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# Fetch tenant name
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tenant_q = select(Tenant).where(Tenant.id == new_tenant_id)
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tenant_result = await db.execute(tenant_q)
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tenant = tenant_result.scalar_one_or_none()
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updated["tenant_name"] = tenant.name if tenant else None
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return updated
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async def request_password_reset(
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self,
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db: AsyncSession,
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email: str,
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tenant_id: uuid.UUID | None = None,
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) -> bool:
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"""Create a password reset token. Always returns True (no user enumeration)."""
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q = select(User).where(User.email == email, User.is_active == True)
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result = await db.execute(q)
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user = result.scalar_one_or_none()
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if user is None:
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return True # Don't reveal whether email exists
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# Invalidate previous unused tokens
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prev_q = select(PasswordResetToken).where(
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PasswordResetToken.user_id == user.id,
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PasswordResetToken.used_at.is_(None),
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)
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prev_result = await db.execute(prev_q)
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for prev_token in prev_result.scalars().all():
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prev_token.used_at = datetime.now(timezone.utc)
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# Create new token
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import secrets
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raw_token = secrets.token_urlsafe(32)
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token_hash = hash_token(raw_token)
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settings = get_settings()
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expires_at = datetime.now(timezone.utc) + timedelta(hours=settings.password_reset_expiry_hours)
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reset_token = PasswordResetToken(
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tenant_id=user.tenant_id,
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user_id=user.id,
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token_hash=token_hash,
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expires_at=expires_at,
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)
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db.add(reset_token)
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await db.flush()
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# In production: send email via SMTP. For now, log it.
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# The raw_token would be in the email link.
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return True
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async def confirm_password_reset(
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self,
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db: AsyncSession,
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token: str,
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new_password: str,
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) -> bool:
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"""Reset password using a valid token. Returns True on success."""
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token_hash = hash_token(token)
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q = select(PasswordResetToken).where(
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PasswordResetToken.token_hash == token_hash,
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PasswordResetToken.used_at.is_(None),
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)
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result = await db.execute(q)
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reset_token = result.scalar_one_or_none()
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if reset_token is None:
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return False
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if reset_token.expires_at < datetime.now(timezone.utc):
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return False # Token expired
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# Get user
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user_q = select(User).where(User.id == reset_token.user_id)
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user_result = await db.execute(user_q)
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user = user_result.scalar_one_or_none()
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if user is None:
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return False
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# Update password
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user.password_hash = hash_password(new_password)
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reset_token.used_at = datetime.now(timezone.utc)
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await db.flush()
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return True
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async def get_password_reset_token_raw(self, db: AsyncSession, email: str) -> str | None:
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"""Get the raw (unhashed) reset token for testing purposes.
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This simulates what would be sent via email.
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"""
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# This is a test helper — in production the token goes via email only
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import secrets
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q = select(User).where(User.email == email)
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result = await db.execute(q)
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user = result.scalar_one_or_none()
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if user is None:
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return None
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raw_token = secrets.token_urlsafe(32)
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token_hash = hash_token(raw_token)
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settings = get_settings()
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expires_at = datetime.now(timezone.utc) + timedelta(hours=settings.password_reset_expiry_hours)
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reset_token = PasswordResetToken(
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tenant_id=user.tenant_id,
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user_id=user.id,
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token_hash=token_hash,
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expires_at=expires_at,
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)
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db.add(reset_token)
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await db.flush()
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return raw_token
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async def create_expired_reset_token(self, db: AsyncSession, email: str) -> str | None:
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"""Create an already-expired reset token for testing."""
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import secrets
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q = select(User).where(User.email == email)
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result = await db.execute(q)
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user = result.scalar_one_or_none()
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if user is None:
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return None
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raw_token = secrets.token_urlsafe(32)
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token_hash = hash_token(raw_token)
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expires_at = datetime.now(timezone.utc) - timedelta(hours=1) # Already expired
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reset_token = PasswordResetToken(
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tenant_id=user.tenant_id,
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user_id=user.id,
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token_hash=token_hash,
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expires_at=expires_at,
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)
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db.add(reset_token)
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await db.flush()
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return raw_token
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auth_service = AuthService()
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