mirror of
https://github.com/bellingcat/auto-archiver-api.git
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260 lines
11 KiB
Python
260 lines
11 KiB
Python
from collections import defaultdict
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from functools import lru_cache
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from sqlalchemy.orm import Session, load_only
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from sqlalchemy import Column, or_, func, select
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from loguru import logger
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from datetime import datetime, timedelta
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.web.config import ALLOW_ANY_EMAIL
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from app.shared.db.database import get_db
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from app.shared.db import models
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from app.shared.settings import get_settings
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from app.shared.user_groups import UserGroups
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from app.shared.utils.misc import fnv1a_hash_mod
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DATABASE_QUERY_LIMIT = get_settings().DATABASE_QUERY_LIMIT
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def get_limit(user_limit: int):
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return max(1, min(user_limit, DATABASE_QUERY_LIMIT))
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# --------------- TASK = Archive
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def base_query(db: Session):
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# NOTE: load_only is for optimization and not obfuscation, use .with_entities() if needed
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return db.query(models.Archive)\
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.filter(models.Archive.deleted == False)\
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.options(load_only(models.Archive.id, models.Archive.created_at, models.Archive.url, models.Archive.result, models.Archive.store_until))
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def get_archive(db: Session, id: str, email: str):
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query = base_query(db).filter(models.Archive.id == id)
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if email != ALLOW_ANY_EMAIL:
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groups = get_user_groups(email)
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query = query.filter(or_(models.Archive.public == True, models.Archive.author_id == email, models.Archive.group_id.in_(groups)))
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return query.first()
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def search_archives_by_url(db: Session, url: str, email: str, skip: int = 0, limit: int = 100, archived_after: datetime = None, archived_before: datetime = None, absolute_search: bool = False)-> list[models.Archive]:
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# searches for partial URLs, if email is * no ownership filtering happens
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query = base_query(db)
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if email != ALLOW_ANY_EMAIL:
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groups = get_user_groups(email)
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query = query.filter(or_(models.Archive.public == True, models.Archive.author_id == email, models.Archive.group_id.in_(groups)))
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if absolute_search:
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query = query.filter(models.Archive.url == url)
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else:
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query = query.filter(models.Archive.url.like(f'%{url}%'))
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if archived_after:
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query = query.filter(models.Archive.created_at > archived_after)
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if archived_before:
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query = query.filter(models.Archive.created_at < archived_before)
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return query.order_by(models.Archive.created_at.desc()).offset(skip).limit(get_limit(limit)).all()
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def search_archives_by_email(db: Session, email: str, skip: int = 0, limit: int = 100):
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return base_query(db).filter(models.Archive.author_id == email).order_by(models.Archive.created_at.desc()).offset(skip).limit(get_limit(limit)).all()
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def soft_delete_task(db: Session, task_id: str, email: str) -> bool:
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# TODO: implement hard-delete with cronjob that deletes from S3
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db_task = db.query(models.Archive).filter(models.Archive.id == task_id, models.Archive.author_id == email, models.Archive.deleted == False).first()
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if db_task:
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db_task.deleted = True
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db.commit()
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return db_task is not None
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def count_archives(db: Session):
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return db.query(func.count(models.Archive.id)).scalar()
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def count_archive_urls(db: Session):
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return db.query(func.count(models.ArchiveUrl.url)).scalar()
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def count_users(db: Session):
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return db.query(func.count(models.User.email)).scalar()
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def count_by_user_since(db: Session, seconds_delta: int = 15):
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time_threshold = datetime.now() - timedelta(seconds=seconds_delta)
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return db.query(models.Archive.author_id, func.count().label('total'))\
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.filter(models.Archive.created_at >= time_threshold)\
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.group_by(models.Archive.author_id)\
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.order_by(func.count().desc())\
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.limit(500).all()
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async def find_by_store_until(db: AsyncSession, store_until_is_before:datetime) -> dict:
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res = await db.execute(
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select(models.Archive)
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.filter(models.Archive.deleted ==False, models.Archive.store_until < store_until_is_before)
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)
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return res.scalars()
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async def soft_delete_expired_archives(db: AsyncSession) -> dict:
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to_delete = await find_by_store_until(db, datetime.now())
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counter = 0
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for archive in to_delete:
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archive.deleted = True
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counter += 1
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await db.commit()
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return counter
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# --------------- TAG
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def is_user_in_group(email: str, group_name: str) -> models.Group:
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if email == ALLOW_ANY_EMAIL: return True
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return len(group_name) and len(email) and group_name in get_user_groups(email)
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@lru_cache
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def get_user_groups(email: str) -> list[str]:
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"""
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given an email retrieves the user groups from the DB and then the email-domain groups from a global variable, the email does not need to belong to an existing user.
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"""
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if not email or not len(email) or "@" not in email: return []
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with get_db() as db:
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# get user groups
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user_groups = db.query(models.association_table_user_groups).filter_by(user_id=email).with_entities(Column("group_id")).all()
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user_level_groups_names = [g[0] for g in user_groups]
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# get domain groups
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domain = email.split('@')[1]
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domain_level_groups = db.query(models.Group.id).filter(models.Group.domains.contains(domain)).with_entities(Column("id")).all()
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domain_level_groups_names = [g[0] for g in domain_level_groups]
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return list(set(user_level_groups_names + domain_level_groups_names))
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# --------------- INIT User-Groups
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def upsert_group(db: Session, group_name: str, description: str, orchestrator: str, orchestrator_sheet: str, service_account_email:str, permissions: dict, domains: list) -> models.Group:
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db_group = db.query(models.Group).filter(models.Group.id == group_name).first()
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if db_group is None:
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db_group = models.Group(id=group_name, description=description, orchestrator=orchestrator, orchestrator_sheet=orchestrator_sheet, service_account_email=service_account_email, permissions=permissions, domains=domains)
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db.add(db_group)
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else:
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db_group.description = description
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db_group.orchestrator = orchestrator
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db_group.orchestrator_sheet = orchestrator_sheet
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db_group.service_account_email = service_account_email
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db_group.permissions = permissions
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db_group.domains = domains
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db.commit()
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db.refresh(db_group)
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return db_group
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def upsert_user(db: Session, email: str):
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email = email.lower()
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db_user = db.query(models.User).filter(models.User.email == email).first()
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if db_user is None:
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db_user = models.User(email=email)
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db.add(db_user)
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db.commit()
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return db_user
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def upsert_user_groups(db: Session):
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def display_email_pii(email: str):
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return f"'{email[0:3]}...@{email.split('@')[1]}'"
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"""
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reads the user_groups yaml file and inserts any new users, groups,
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along with new participation of users in groups
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"""
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logger.debug("Updating user-groups configuration.")
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filename = get_settings().USER_GROUPS_FILENAME
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ug = UserGroups(filename)
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# delete all user-groups relationships
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db.query(models.association_table_user_groups).delete()
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# create a map of group_id -> domains and another of domain -> groups
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group_domains = defaultdict(set)
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domain_groups = defaultdict(list)
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for domain, explicit_groups in ug.domains.items():
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domain_groups[domain] = list(set(explicit_groups))
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for group in explicit_groups:
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group_domains[group].add(domain)
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import json
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# upsert groups and save a map of groupid -> dbobject
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for group_id, g in ug.groups.items():
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upsert_group(db, group_id, g.description, g.orchestrator, g.orchestrator_sheet, g.service_account_email, json.loads(g.permissions.model_dump_json()), list(group_domains.get(group_id, [])))
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db_groups: dict[str, models.Group] = {g.id: g for g in db.query(models.Group).all()}
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# integrity checks
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for group_in_domains in group_domains:
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if group_in_domains not in db_groups:
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logger.warning(f"[CONFIG] Group '{group_in_domains}' does not exist in the database: domains setting will not work.")
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# reinsert users in their EXPLICITLY DEFINED groups
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# domain groups are check live, as there may be new users that are not explicitly registered but belong to a domain
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for email, explicit_groups in ug.users.items():
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explicit_groups = explicit_groups or []
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logger.info(f"EXPLICIT {display_email_pii(email)} => {explicit_groups}")
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db_user = upsert_user(db, email)
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# connect users to groups
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for group_id in explicit_groups:
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if group_id not in db_groups:
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logger.warning(f"[CONFIG] Group {group_id} does not exist in config file, skipping for email={display_email_pii(email)}.")
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continue
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db_groups[group_id].users.append(db_user)
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db.commit()
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count_user_groups = db.query(models.association_table_user_groups).count()
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count_groups = db.query(func.count(models.Group.id)).scalar()
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logger.success(f"[CONFIG] DONE: [users={count_users(db)}, groups={count_groups}, explicit user groups={count_user_groups}].")
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# --------------- SHEET
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def create_sheet(db: Session, sheet_id: str, name: str, email: str, group_id: str, frequency: str):
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db_sheet = models.Sheet(id=sheet_id, name=name, author_id=email, group_id=group_id, frequency=frequency)
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db.add(db_sheet)
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db.commit()
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db.refresh(db_sheet)
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return db_sheet
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def get_user_sheet(db: Session, email: str, sheet_id: str) -> models.Sheet:
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return db.query(models.Sheet).filter(models.Sheet.author_id == email, models.Sheet.id == sheet_id).first()
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def get_user_sheets(db: Session, email: str) -> list[models.Sheet]:
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return db.query(models.Sheet).filter(models.Sheet.author_id == email).order_by(models.Sheet.last_url_archived_at.desc()).all()
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async def get_sheets_by_id_hash(db: AsyncSession, frequency: str, modulo: str, id_hash: str) -> list[models.Sheet]:
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result = await db.execute(
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select(models.Sheet).filter(models.Sheet.frequency == frequency)
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)
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filtered = []
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for sheet in result.scalars():
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if fnv1a_hash_mod(sheet.id, modulo) == id_hash:
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filtered.append(sheet)
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return filtered
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async def delete_stale_sheets(db: AsyncSession, inactivity_days: int) -> dict:
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time_threshold = datetime.now() - timedelta(days=inactivity_days)
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result = await db.execute(
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select(models.Sheet).filter(models.Sheet.last_url_archived_at < time_threshold)
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)
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deleted = defaultdict(list)
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for sheet in result.scalars():
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await db.delete(sheet)
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deleted[sheet.author_id].append(sheet)
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await db.commit()
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return dict(deleted)
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def delete_sheet(db: Session, sheet_id: str, email: str) -> bool:
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db_sheet = db.query(models.Sheet).filter(models.Sheet.id == sheet_id, models.Sheet.author_id == email).first()
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if db_sheet:
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db.delete(db_sheet)
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db.commit()
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return db_sheet is not None
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