314 lines
12 KiB
Python
Executable File
314 lines
12 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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import os
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import shutil
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# import ssl
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import re
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import logging
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import sqlite3
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from hashlib import md5
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from pathlib import Path
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from datetime import datetime
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from utils.time import timestamp_fmt as ts
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from utils.time import date_refmt as df
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from utils.config import set_config as setting
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from pyftpdlib.handlers import FTPHandler, TLS_FTPHandler
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from pyftpdlib.servers import FTPServer
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from pyftpdlib.authorizers import DummyAuthorizer, AuthenticationFailed
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class DummyMD5Authorizer(DummyAuthorizer):
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def __init__(self, cfg):
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# Initialize the DummyAuthorizer and add the admin user
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super().__init__()
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self.add_user(
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cfg.adminuser[0], cfg.adminuser[1], cfg.adminuser[2], perm=cfg.adminuser[3])
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# Connect to the SQLite database for virtual users
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con = sqlite3.connect(cfg.virtusersdb)
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cur = con.cursor()
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# Create the virtusers table if it doesn't exist
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cur.execute(
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'''CREATE TABLE IF NOT EXISTS virtusers (user text, hash text, virtpath text, perm text)''')
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# Create an index on the user column for faster lookups
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cur.execute(
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'''CREATE INDEX IF NOT EXISTS user_idx on virtusers(user)''')
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# Load existing virtual users from the database
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for row in cur.execute('SELECT * FROM virtusers'):
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self.add_user(row[0], row[1], row[2], perm=row[3])
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con.close()
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def validate_authentication(self, username, password, handler):
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# Validate the user's password against the stored hash
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hash = md5(password.encode("UTF-8")).hexdigest()
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try:
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if self.user_table[username]["pwd"] != hash:
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raise KeyError
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except KeyError:
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raise AuthenticationFailed
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class ASEHandler(FTPHandler):
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def __init__(self, conn, server, ioloop=None):
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# Initialize the FTPHandler and add custom commands
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super().__init__(conn, server, ioloop)
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self.proto_cmds = FTPHandler.proto_cmds.copy()
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# Add custom FTP commands for managing virtual users - command in lowercase
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self.proto_cmds.update(
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{'SITE ADDU': dict(perm='M', auth=True, arg=True,
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help='Syntax: SITE <SP> ADDU USERNAME PASSWORD (add virtual user).')}
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)
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self.proto_cmds.update(
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{'SITE DELU': dict(perm='M', auth=True, arg=True,
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help='Syntax: SITE <SP> DELU USERNAME (remove virtual user).')}
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)
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self.proto_cmds.update(
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{'SITE LSTU': dict(perm='M', auth=True, arg=None,
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help='Syntax: SITE <SP> LSTU (list virtual users).')}
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)
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def on_file_received(self, file):
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# Handle the event when a file is received
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unitType = ""
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unitName = ""
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toolName = ""
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toolType = ""
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fileDate = ""
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fileTime = ""
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queue = ""
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# Check if the file is empty and remove it if so
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if not os.stat(file).st_size:
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os.remove(file)
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logging.info(
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"File {} was empty: removed.".format(file))
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else:
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cfg = self.cfg
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path, filenameExt = os.path.split(file)
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filename, fileExtension = os.path.splitext(filenameExt)
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# Process the file if it has a valid extension
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if (fileExtension.upper() in (cfg.fileext)):
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# Match the filename against a specific pattern
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if m := re.match(
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r"^(G\d\d\d|GFLOW)_(ID\d\d\d\d)_(DT\d\d\d\d)_(\d\d)(\d\d)(\d\d\d\d|\d\d)(\d\d)(\d\d)(\d\d)$",
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filename,
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re.I,
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):
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unitType = m.group(1).upper()
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unitName = m.group(2).upper()
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toolName = m.group(3).upper()
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toolType = "N/A"
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fileDate = m.group(6) + "/" + m.group(5) + "/" + m.group(4)
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fileTime = m.group(7) + ":" + m.group(8) + ":" + m.group(9)
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# Match against another pattern for different file formats
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elif re.match(
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r"^(\d\d_\d\d\d\d|)(DT\d\d\d\d|LOC\d\d\d\d|GD\d\d\d\d)$", filename, re.I
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):
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with open(file, "r") as fileCsv:
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try:
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# Read the CSV file line by line
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for i, line in enumerate(fileCsv.readlines(4096), 1):
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# Extract creation date and time
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if m1 := re.match(
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r"^(File Creation Date:\s)?(\d*\/\d*\/\d*)\s(\d*:\d*:\d*)\;*\n?$",
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line,
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re.I,
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):
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fileDate = m1.group(2)
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fileTime = m1.group(3)
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# Extract unit type and name
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elif m2 := re.match(
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r"^(\w+\d+)\s(\w+\d+)\;*\n?$",
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line,
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re.I,
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):
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unitType = m2.group(1).upper()
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unitName = m2.group(2).upper()
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# Extract tool type and name from the path
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elif m3 := re.match(
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r"^SD path: a:\/\w+\/(\w+)(?:\.\w+)?\/*(\w*)(?:\.\w+)?\;*\n?$",
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line,
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re.I,
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):
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if m3.group(2):
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toolType = m3.group(1).upper()
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toolName = m3.group(2).upper()
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else:
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toolType = "".join(
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re.findall(
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"^[a-zA-Z]+", m3.group(1))
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).upper()
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toolName = m3.group(1).upper()
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break
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except:
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logging.error(
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"Error: {}.".format(sys.exc_info()[1]))
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fileCsv.close
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# Log the extracted information
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logging.info(
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"{} - {} - {} - {} - {} {}.".format(
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unitType,
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unitName,
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toolName,
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toolType,
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df.dateFmt(fileDate),
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fileTime,
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)
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)
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# Prepare the new path for the received file
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newPath = cfg.csvfs + "/" + self.username + "/received/" + \
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unitName.upper() + "/"
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newFilename = (
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newPath + filename + "_" +
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str(ts.timestamp("tms") + fileExtension)
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)
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fileRenamed = file + "_" + str(ts.timestamp("tms"))
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# Rename the original file to avoid conflicts
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os.rename(file, fileRenamed)
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try:
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# Create the new directory for the user if it doesn't exist
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os.makedirs(newPath)
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logging.info("Path {} created.".format(newPath))
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except FileExistsError:
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logging.info("Path {} already exists.".format(newPath))
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try:
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# Move the renamed file to the new location
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shutil.move(fileRenamed, newFilename)
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logging.info("{} moved into {}.".format(
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filenameExt, newFilename))
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except OSError:
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logging.error("Error to move {} into {}.".format(
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filenameExt, newFilename))
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now = datetime.now()
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def on_incomplete_file_received(self, file):
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# Remove partially uploaded files
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os.remove(file)
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def ftp_SITE_ADDU(self, line):
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"""
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Add a virtual user and save the virtuser configuration file.
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Create a directory for the virtual user in the specified virtpath.
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"""
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cfg = self.cfg
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parms = line.split()
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user = os.path.basename(parms[0]) # Extract the username
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password = parms[1] # Get the password
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hash = md5(password.encode("UTF-8")).hexdigest() # Hash the password
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try:
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# Create the user's directory
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Path(cfg.virtpath + user).mkdir(parents=True, exist_ok=True)
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except:
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self.respond('551 Error in create virtual user path.')
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else:
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try:
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# Add the user to the authorizer
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self.authorizer.add_user(str(user),
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hash, cfg.virtpath + "/" + user, perm="lmw")
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# Save the user to the SQLite database
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con = sqlite3.connect(cfg.virtusersdb)
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cur = con.cursor()
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cur.execute("INSERT INTO virtusers VALUES (?,?,?,?)",
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(user, hash, cfg.virtpath + user, 'elmw'))
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con.commit()
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con.close()
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logging.info("User {} created.".format(user))
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self.respond('200 SITE ADDU successful.')
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except:
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self.respond('501 SITE ADDU failed.')
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def ftp_SITE_DELU(self, line):
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"""
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Remove a virtual user and save the virtuser configuration file.
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"""
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cfg = self.cfg
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parms = line.split()
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user = os.path.basename(parms[0]) # Extract the username
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try:
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# Remove the user from the authorizer
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self.authorizer.remove_user(str(user))
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# Delete the user from the SQLite database
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con = sqlite3.connect(cfg.virtusersdb)
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cur = con.cursor()
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cur.execute("DELETE FROM virtusers WHERE user = ?", (user,))
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con.commit()
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con.close()
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logging.info("User {} deleted.".format(user))
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self.respond('200 SITE DELU successful.')
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except:
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self.respond('501 SITE DELU failed.')
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def ftp_SITE_LSTU(self, line):
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"""
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List all virtual users.
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"""
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cfg = self.cfg
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users_list = []
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try:
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# Connect to the SQLite database to fetch users
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con = sqlite3.connect(cfg.virtusersdb)
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cur = con.cursor()
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self.push("214-The following virtual users are defined:\r\n")
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# Fetch and list all virtual users
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for row in cur.execute("SELECT * FROM virtusers").fetchall():
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users_list.append(
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" Username: " + row[0] + "\tPerms: " + row[3] + "\r\n")
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con.close()
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self.push(''.join(users_list))
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self.respond("214 LSTU SITE command successful.")
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except:
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self.respond('501 list users failed.')
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def main():
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# Load the configuration settings
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cfg = setting.config()
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try:
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# Initialize the authorizer and handler
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authorizer = DummyMD5Authorizer(cfg)
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handler = ASEHandler
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handler.cfg = cfg
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handler.authorizer = authorizer
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handler.masquerade_address = cfg.proxyaddr
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# Set the range of passive ports for the FTP server
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_range = list(range(cfg.firstport, cfg.firstport + cfg.portrangewidth))
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handler.passive_ports = _range
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# Configure logging
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logging.basicConfig(
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format="%(asctime)s %(message)s",
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filename=cfg.logfilename,
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level=logging.INFO,
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)
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# Create and start the FTP server
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server = FTPServer(("0.0.0.0", 2121), handler)
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server.serve_forever()
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except KeyboardInterrupt:
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logging.info(
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"Info: {}.".format("Shutdown requested...exiting")
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)
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except Exception:
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print(
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"{} - PID {:>5} >> Error: {}.".format(
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ts.timestamp("log"), os.getpid(), sys.exc_info()[1]
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)
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)
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if __name__ == "__main__":
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main()
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