85 lines
3.1 KiB
Python
85 lines
3.1 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
from pathlib import Path
|
|
from sqlalchemy import MetaData, Table
|
|
from sqlalchemy.exc import (
|
|
IllegalStateChangeError,
|
|
NoInspectionAvailable,
|
|
NoSuchTableError,
|
|
)
|
|
from sqlalchemy.orm import sessionmaker, scoped_session
|
|
from sqlalchemy.exc import SAWarning
|
|
import warnings
|
|
from nxc.logger import nxc_logger
|
|
|
|
|
|
# if there is an issue with SQLAlchemy and a connection cannot be cleaned up properly it spews out annoying warnings
|
|
warnings.filterwarnings("ignore", category=SAWarning)
|
|
|
|
|
|
class database:
|
|
def __init__(self, db_engine):
|
|
self.HostsTable = None
|
|
self.CredentialsTable = None
|
|
|
|
self.db_engine = db_engine
|
|
self.db_path = self.db_engine.url.database
|
|
self.protocol = Path(self.db_path).stem.upper()
|
|
self.metadata = MetaData()
|
|
self.reflect_tables()
|
|
session_factory = sessionmaker(bind=self.db_engine, expire_on_commit=True)
|
|
|
|
Session = scoped_session(session_factory)
|
|
# this is still named "conn" when it is the session object; TODO: rename
|
|
self.conn = Session()
|
|
|
|
@staticmethod
|
|
def db_schema(db_conn):
|
|
db_conn.execute(
|
|
"""CREATE TABLE "credentials" (
|
|
"id" integer PRIMARY KEY,
|
|
"username" text,
|
|
"password" text,
|
|
"pkey" text
|
|
)"""
|
|
)
|
|
|
|
db_conn.execute(
|
|
"""CREATE TABLE "hosts" (
|
|
"id" integer PRIMARY KEY,
|
|
"ip" text,
|
|
"hostname" text,
|
|
"port" integer,
|
|
"server_banner" text
|
|
)"""
|
|
)
|
|
|
|
def reflect_tables(self):
|
|
with self.db_engine.connect() as conn:
|
|
try:
|
|
self.HostsTable = Table("hosts", self.metadata, autoload_with=self.db_engine)
|
|
self.CredentialsTable = Table("credentials", self.metadata, autoload_with=self.db_engine)
|
|
except (NoInspectionAvailable, NoSuchTableError):
|
|
print(
|
|
f"""
|
|
[-] Error reflecting tables for the {self.protocol} protocol - this means there is a DB schema mismatch
|
|
[-] This is probably because a newer version of nxc is being ran on an old DB schema
|
|
[-] Optionally save the old DB data (`cp {self.db_path} ~/nxc_{self.protocol.lower()}.bak`)
|
|
[-] Then remove the {self.protocol} DB (`rm -f {self.db_path}`) and run nxc to initialize the new DB"""
|
|
)
|
|
exit()
|
|
|
|
def shutdown_db(self):
|
|
try:
|
|
self.conn.close()
|
|
# due to the async nature of nxc, sometimes session state is a bit messy and this will throw:
|
|
# Method 'close()' can't be called here; method '_connection_for_bind()' is already in progress and
|
|
# this would cause an unexpected state change to <SessionTransactionState.CLOSED: 5>
|
|
except IllegalStateChangeError as e:
|
|
nxc_logger.debug(f"Error while closing session db object: {e}")
|
|
|
|
def clear_database(self):
|
|
for table in self.metadata.sorted_tables:
|
|
self.conn.execute(table.delete())
|