api/v1/handlers/forensic/upload.py
2024-02-07 14:54:36 +01:00

103 lines
3.9 KiB
Python

import os
import json
import tornado
from ioutils.protected import ProtectedHandler
from ioutils.errors import ErrorCode, ErrorMessage
from piracyshield_service.forensic.create_archive import ForensicCreateArchiveService
from piracyshield_component.environment import Environment
from piracyshield_component.exception import ApplicationException
class UploadForensicHandler(ProtectedHandler):
def get_received_chunks_info_path(self, filename):
return f"{Environment.CACHE_PATH}/{filename}_info.json"
def update_received_chunks_info(self, filename, chunk_index):
info_path = self.get_received_chunks_info_path(filename)
if os.path.exists(info_path):
with open(info_path, 'r') as file:
info = json.load(file)
received_chunks = set(info['received_chunks'])
else:
received_chunks = set()
received_chunks.add(chunk_index)
with open(info_path, 'w') as file:
json.dump({"received_chunks": list(received_chunks)}, file)
def check_all_chunks_received(self, filename, total_chunks):
info_path = self.get_received_chunks_info_path(filename)
if os.path.exists(info_path):
with open(info_path, 'r') as file:
info = json.load(file)
return len(info['received_chunks']) == total_chunks
return False
async def post(self, ticket_id):
if not self.initialize_account():
return
# verify permissions
self.permission_service.can_upload_ticket()
if 'archive' not in self.request.files or 'chunkIndex' not in self.request.arguments or 'totalChunks' not in self.request.arguments:
return self.error(status_code = 400, error_code = ErrorCode.MISSING_FILE, message = ErrorMessage.MISSING_FILE)
try:
archive_handler = self.request.files['archive'][0]
chunk_index = int(self.request.arguments['chunkIndex'][0])
total_chunks = int(self.request.arguments['totalChunks'][0])
original_filename = self.get_argument('originalFileName')
filename = f"{ticket_id}_{original_filename}"
temp_storage_path = f"{Environment.CACHE_PATH}/{filename}"
chunk_temp_path = temp_storage_path + f"_part{chunk_index}"
with open(chunk_temp_path, "wb") as temp_file:
temp_file.write(archive_handler['body'])
# update received chunks
self.update_received_chunks_info(filename, chunk_index)
# did we get every chunk?
if self.check_all_chunks_received(filename, total_chunks):
# proceed to assemble all the chunks into the a single file
with open(temp_storage_path, "wb") as final_file:
for i in range(total_chunks):
part_file_path = temp_storage_path + f"_part{i}"
if not os.path.exists(part_file_path):
raise ApplicationException("Missing file chunk: " + str(i))
with open(part_file_path, "rb") as part_file:
final_file.write(part_file.read())
os.remove(part_file_path)
# process the final file
forensic_create_archive_service = ForensicCreateArchiveService()
await tornado.ioloop.IOLoop.current().run_in_executor(
None,
forensic_create_archive_service.execute,
ticket_id,
filename
)
# clean stored info
os.remove(self.get_received_chunks_info_path(filename))
# always answer or the frontend won't send anything more
self.success()
except ApplicationException as e:
self.error(status_code = 400, error_code = e.code, message = e.message)