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| import logging |
| import subprocess |
| from datetime import datetime, timedelta, timezone |
| from threading import Lock |
|
|
| from flask import current_app |
|
|
| import config |
|
|
|
|
| class PasswordExec: |
|
|
| lock = Lock() |
|
|
| def __init__(self, cmd, expiration_seconds=None, timeout=60): |
| self.cmd = str(cmd) |
| self.expiration_seconds = int(expiration_seconds) \ |
| if expiration_seconds is not None else None |
| self.timeout = int(timeout) |
| self.password = None |
| self.last_result = None |
|
|
| def get(self): |
| if config.SERVER_MODE and not config.ENABLE_SERVER_PASS_EXEC_CMD: |
| |
| raise NotImplementedError('Passexec not available in server mode') |
| with self.lock: |
| if not self.password or self.is_expired(): |
| if not self.cmd: |
| return None |
| current_app.logger.info('Calling passexec') |
| now = datetime.now(timezone.utc) |
| try: |
| p = subprocess.run( |
| self.cmd, |
| shell=True, |
| timeout=self.timeout, |
| capture_output=True, |
| text=True, |
| check=True, |
| ) |
| except subprocess.CalledProcessError as e: |
| if e.stderr: |
| self.create_logger().error(e.stderr) |
| raise |
|
|
| current_app.logger.info('Passexec completed successfully') |
| self.last_result = now |
| self.password = p.stdout.strip() |
| return self.password |
|
|
| def is_expired(self): |
| if self.expiration_seconds is None: |
| return False |
| return self.last_result is not None and\ |
| datetime.now(timezone.utc) - self.last_result \ |
| >= timedelta(seconds=self.expiration_seconds) |
|
|
| def create_logger(self): |
| logger = logging.getLogger('passexec') |
| for h in current_app.logger.handlers: |
| logger.addHandler(h) |
| return logger |
|
|
