def __process_task(self, task: AgentTask) -> None:
"""Dispatches and executes the next incoming task.
The high level workflow look like this: for every new `search` job,
mquery creates a new `search` task for every agent group.
One of the agents will pick it up and execute, and create `yara`
tasks. `yara` tasks will be executed by workers for every file in
iterator, until it's exhausted.
:param task: Task to be executed.
:type task: AgentTask
:raises RuntimeError: Task with unsupported type given.
"""
if task.type == TaskType.RELOAD:
if (self.plugin_config_version ==
self.db.get_plugin_config_version()):
# This should never happen and suggests that there is bug somewhere
# and version was not updated properly.
logging.error(
"Critical error: Requested to reload configuration, but "
"configuration present in database is still the same (%s).",
self.plugin_config_version,
)
return
logging.info("Configuration changed - reloading plugins.")
# Request next agent to reload the configuration
self.db.reload_configuration(self.plugin_config_version)
# Reload configuration. Version will be updated during reinitialization,
# so we don't receive our own request.
self.__initialize_agent()
elif task.type == TaskType.COMMAND:
logging.info("Executing raw command: %s", task.data)
self.ursa.execute_command(task.data)
elif task.type == TaskType.SEARCH:
job = JobId(task.data)
logging.info(f"search: {job.hash}")
try:
self.__search_task(job)
except Exception as e:
logging.exception("Failed to execute task.")
jobobj = self.db.get_job(job)
self.db.agent_finish_job(jobobj.userid, job)
self.db.fail_job(jobobj.userid, job, str(e))
elif task.type == TaskType.YARA:
data = json.loads(task.data)
job = JobId(data["job"])
iterator = data["iterator"]
logging.info("yara: iterator %s", iterator)
try:
self.__yara_task(job, iterator)
except Exception as e:
logging.exception("Failed to execute task.")
jobobj = self.db.get_job(job)
self.db.agent_finish_job(jobobj.userid, job)
self.db.fail_job(jobobj.userid, job, str(e))
else:
raise RuntimeError("Unsupported queue")
def job_cancel(request: Request, job_id: str) -> StatusSchema:
"""
Cancels the job with a provided `job_id`.
"""
userid = request.client.host
db.cancel_job(userid, JobId(job_id))
return StatusSchema(status="ok")
def matches(
hash: str, offset: int = Query(...), limit: int = Query(...)
) -> MatchesSchema:
"""
Returns a list of matched files, along with metadata tags and other
useful information. Results from this query can be used to download files
using the `/download` endpoint.
"""
return db.get_job_matches(JobId(hash), offset, limit)
def download(job_id: str, ordinal: int, file_path: str) -> FileResponse:
"""
Sends a file from given `file_path`. This path should come from
results of one of the previous searches.
This endpoint needs `job_id` that found the specified file, and `ordinal`
(index of the file in that job), to ensure that user can't download
arbitrary files (for example "/etc/passwd").
"""
if not db.job_contains(JobId(job_id), ordinal, file_path):
raise NotFound("No such file in result set.")
attach_name, ext = os.path.splitext(os.path.basename(file_path))
return FileResponse(file_path, filename=attach_name + ext + "_")
async def download_files(hash: str) -> StreamingResponse:
matches = db.get_job_matches(JobId(hash)).matches
return StreamingResponse(zip_files(matches))
def download_hashes(hash: str) -> Response:
hashes = "\n".join(
d["meta"]["sha256"]["display_text"]
for d in db.get_job_matches(JobId(hash)).matches
)
return Response(hashes + "\n")
def query_remove(job_id: str) -> StatusSchema:
db.remove_query(JobId(job_id))
return StatusSchema(status="ok")
def job_cancel(job_id: str) -> StatusSchema:
"""
Cancels the job with a provided `job_id`.
"""
db.cancel_job(JobId(job_id))
return StatusSchema(status="ok")
def job_info(job_id: str) -> JobSchema:
"""
Returns a metadata for a single job. May be useful for monitoring
a job progress.
"""
return db.get_job(JobId(job_id))
async def download_files(request: Request, hash: str) -> StreamingResponse:
userid = request.client.host
matches = db.get_job_matches(JobId(hash)).matches
db.bump_quota(userid, RateLimitType.file_download, len(matches))
return StreamingResponse(zip_files(matches))
def query_remove(job_id: str) -> StatusSchema:
job = db.get_job(JobId(job_id))
if job.userid != "unknown":
db.remove_query(JobId(job_id))
return StatusSchema(status="ok")
def download(job_id: str, ordinal: str, file_path: str) -> Any:
if not db.job_contains(JobId(job_id), ordinal, file_path):
raise NotFound("No such file in result set.")
attach_name, ext = os.path.splitext(os.path.basename(file_path))
return FileResponse(file_path, filename=attach_name + ext + "_")
def job_cancel(job_id: str) -> StatusSchema:
db.cancel_job(JobId(job_id))
return StatusSchema(status="ok")
def job_info(job_id: str) -> JobSchema:
return db.get_job(JobId(job_id))
def matches(
hash: str, offset: int = Query(...), limit: int = Query(...)
) -> MatchesSchema:
return db.get_job_matches(JobId(hash), offset, limit)
