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download_service.py
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download_service.py
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import os
import shutil
from operator import and_
from pathlib import Path
from fastapi import UploadFile
from sqlalchemy import func, or_
from sqlalchemy.orm import Session
from empire.server.api.v2.download.download_dto import (
DownloadOrderOptions,
DownloadSourceFilter,
)
from empire.server.api.v2.shared_dto import OrderDirection
from empire.server.core.config import empire_config
from empire.server.core.db import models
class DownloadService:
def __init__(self, main_menu):
self.main_menu = main_menu
@staticmethod
def get_by_id(db: Session, uid: int):
return db.query(models.Download).filter(models.Download.id == uid).first()
@staticmethod
def get_all( # noqa: PLR0913 PLR0912
db: Session,
download_types: list[DownloadSourceFilter] | None,
tags: list[str] | None = None,
q: str | None = None,
limit: int = -1,
offset: int = 0,
order_by: DownloadOrderOptions = DownloadOrderOptions.updated_at,
order_direction: OrderDirection = OrderDirection.desc,
) -> tuple[list[models.Download], int]:
query = db.query(
models.Download, func.count(models.Download.id).over().label("total")
)
download_types = download_types or []
sub = []
if DownloadSourceFilter.agent_task in download_types:
sub.append(
db.query(
models.agent_task_download_assc.c.download_id.label("download_id")
)
)
if DownloadSourceFilter.agent_file in download_types:
sub.append(
db.query(
models.agent_file_download_assc.c.download_id.label("download_id")
)
)
if DownloadSourceFilter.stager in download_types:
sub.append(
db.query(models.stager_download_assc.c.download_id.label("download_id"))
)
if DownloadSourceFilter.upload in download_types:
sub.append(
db.query(models.upload_download_assc.c.download_id.label("download_id"))
)
subquery = None
if len(sub) > 0:
subquery = sub[0]
if len(sub) > 1:
subquery = subquery.union(*sub[1:])
subquery = subquery.subquery()
if subquery is not None:
query = query.join(subquery, subquery.c.download_id == models.Download.id)
if q:
query = query.filter(
or_(
models.Download.filename.like(f"%{q}%"),
models.Download.location.like(f"%{q}%"),
)
)
if tags:
tags_split = [tag.split(":", 1) for tag in tags]
query = query.join(models.Download.tags).filter(
and_(
models.Tag.name.in_([tag[0] for tag in tags_split]),
models.Tag.value.in_([tag[1] for tag in tags_split]),
)
)
if order_by == DownloadOrderOptions.filename:
order_by_prop = func.lower(models.Download.filename)
elif order_by == DownloadOrderOptions.location:
order_by_prop = func.lower(models.Download.location)
elif order_by == DownloadOrderOptions.size:
order_by_prop = models.Download.size
elif order_by == DownloadOrderOptions.created_at:
order_by_prop = models.Download.created_at
else:
order_by_prop = models.Download.updated_at
if order_direction == OrderDirection.asc:
query = query.order_by(order_by_prop.asc())
else:
query = query.order_by(order_by_prop.desc())
if limit > 0:
query = query.limit(limit).offset(offset)
results = query.all()
total = 0 if len(results) == 0 else results[0].total
results = [x[0] for x in results]
return results, total
def create_download_from_text(
self,
db: Session,
user: models.User,
file: str,
filename: str,
subdirectory: str | None = None,
):
"""
Upload the file to the downloads directory and save a reference to the db.
If a subdirectory is supplied, it will use that, otherwise it will use the user
"""
subdirectory = subdirectory or f"user/{user.username}"
location = (
empire_config.directories.downloads / "uploads" / subdirectory / filename
)
location.parent.mkdir(parents=True, exist_ok=True)
filename, location = self._increment_filename(filename, location)
with location.open("w") as buffer:
buffer.write(file)
return self._save_download(db, filename, location)
def create_download(self, db: Session, user: models.User, file: UploadFile | Path):
"""
Upload the file to the downloads directory and save a reference to the db.
:param db:
:param user:
:param file:
:return:
"""
filename = file.name if isinstance(file, Path) else file.filename
location = (
empire_config.directories.downloads / "uploads" / user.username / filename
)
location.parent.mkdir(parents=True, exist_ok=True)
filename, location = self._increment_filename(filename, location)
with location.open("wb") as buffer:
if isinstance(file, Path):
with file.open("rb") as f:
shutil.copyfileobj(f, buffer)
else:
shutil.copyfileobj(file.file, buffer)
return self._save_download(db, filename, location)
@staticmethod
def _increment_filename(filename, location):
filename, file_extension = os.path.splitext(filename)
i = 1
while os.path.isfile(location):
temp_name = f"{filename}({i}){file_extension}"
location = location.parent / temp_name
i += 1
filename = location.name
return filename, location
@staticmethod
def _save_download(db, filename, location):
download = models.Download(
location=str(location), filename=filename, size=os.path.getsize(location)
)
db.add(download)
db.flush()
db.execute(models.upload_download_assc.insert().values(download_id=download.id))
return download