278 lines
11 KiB
Python
278 lines
11 KiB
Python
"""
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Minimal browser manager for DentaQuest - only handles persistent profile and keeping browser alive.
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Clears session cookies on startup (after PC restart) to force fresh login.
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Tracks credentials to detect changes mid-session.
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"""
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import os
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import shutil
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import hashlib
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import threading
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import subprocess
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import time
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from selenium import webdriver
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from selenium.webdriver.chrome.service import Service
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from webdriver_manager.chrome import ChromeDriverManager
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# Ensure DISPLAY is set for Chrome to work (needed when running from SSH/background)
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if not os.environ.get("DISPLAY"):
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os.environ["DISPLAY"] = ":0"
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class DentaQuestBrowserManager:
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"""
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Singleton that manages a persistent Chrome browser instance for DentaQuest.
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- Uses --user-data-dir for persistent profile (device trust tokens)
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- Clears session cookies on startup (after PC restart)
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- Tracks credentials to detect changes mid-session
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"""
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_instance = None
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_lock = threading.Lock()
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def __new__(cls):
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with cls._lock:
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if cls._instance is None:
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cls._instance = super().__new__(cls)
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cls._instance._driver = None
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cls._instance.profile_dir = os.path.abspath("chrome_profile_dentaquest")
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cls._instance.download_dir = os.path.abspath("seleniumDownloads")
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cls._instance._credentials_file = os.path.join(cls._instance.profile_dir, ".last_credentials")
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cls._instance._needs_session_clear = False # Flag to clear session on next driver creation
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os.makedirs(cls._instance.profile_dir, exist_ok=True)
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os.makedirs(cls._instance.download_dir, exist_ok=True)
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return cls._instance
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def clear_session_on_startup(self):
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"""
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Clear session cookies from Chrome profile on startup.
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This forces a fresh login after PC restart.
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Preserves device trust tokens (LocalStorage, IndexedDB) to avoid OTPs.
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"""
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print("[DentaQuest BrowserManager] Clearing session on startup...")
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try:
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# Clear the credentials tracking file
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if os.path.exists(self._credentials_file):
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os.remove(self._credentials_file)
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print("[DentaQuest BrowserManager] Cleared credentials tracking file")
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# Clear session-related files from Chrome profile
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# These are the files that store login session cookies
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session_files = [
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"Cookies",
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"Cookies-journal",
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"Login Data",
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"Login Data-journal",
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"Web Data",
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"Web Data-journal",
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]
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for filename in session_files:
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filepath = os.path.join(self.profile_dir, "Default", filename)
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if os.path.exists(filepath):
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try:
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os.remove(filepath)
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print(f"[DentaQuest BrowserManager] Removed {filename}")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Could not remove {filename}: {e}")
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# Also try root level (some Chrome versions)
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for filename in session_files:
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filepath = os.path.join(self.profile_dir, filename)
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if os.path.exists(filepath):
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try:
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os.remove(filepath)
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print(f"[DentaQuest BrowserManager] Removed root {filename}")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Could not remove root {filename}: {e}")
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# Clear Session Storage (contains login state)
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session_storage_dir = os.path.join(self.profile_dir, "Default", "Session Storage")
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if os.path.exists(session_storage_dir):
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try:
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shutil.rmtree(session_storage_dir)
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print("[DentaQuest BrowserManager] Cleared Session Storage")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Could not clear Session Storage: {e}")
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# Clear Local Storage (may contain auth tokens)
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local_storage_dir = os.path.join(self.profile_dir, "Default", "Local Storage")
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if os.path.exists(local_storage_dir):
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try:
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shutil.rmtree(local_storage_dir)
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print("[DentaQuest BrowserManager] Cleared Local Storage")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Could not clear Local Storage: {e}")
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# Clear IndexedDB (may contain auth tokens)
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indexeddb_dir = os.path.join(self.profile_dir, "Default", "IndexedDB")
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if os.path.exists(indexeddb_dir):
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try:
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shutil.rmtree(indexeddb_dir)
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print("[DentaQuest BrowserManager] Cleared IndexedDB")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Could not clear IndexedDB: {e}")
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# Set flag to clear session via JavaScript after browser opens
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self._needs_session_clear = True
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print("[DentaQuest BrowserManager] Session cleared - will require fresh login")
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Error clearing session: {e}")
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def _hash_credentials(self, username: str) -> str:
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"""Create a hash of the username to track credential changes."""
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return hashlib.sha256(username.encode()).hexdigest()[:16]
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def get_last_credentials_hash(self) -> str | None:
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"""Get the hash of the last-used credentials."""
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try:
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if os.path.exists(self._credentials_file):
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with open(self._credentials_file, 'r') as f:
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return f.read().strip()
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except Exception:
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pass
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return None
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def save_credentials_hash(self, username: str):
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"""Save the hash of the current credentials."""
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try:
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cred_hash = self._hash_credentials(username)
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with open(self._credentials_file, 'w') as f:
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f.write(cred_hash)
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Failed to save credentials hash: {e}")
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def credentials_changed(self, username: str) -> bool:
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"""Check if the credentials have changed since last login."""
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last_hash = self.get_last_credentials_hash()
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if last_hash is None:
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return False # No previous credentials, not a change
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current_hash = self._hash_credentials(username)
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changed = last_hash != current_hash
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if changed:
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print(f"[DentaQuest BrowserManager] Credentials changed - logout required")
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return changed
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def clear_credentials_hash(self):
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"""Clear the saved credentials hash (used after logout)."""
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try:
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if os.path.exists(self._credentials_file):
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os.remove(self._credentials_file)
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except Exception as e:
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print(f"[DentaQuest BrowserManager] Failed to clear credentials hash: {e}")
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def _kill_existing_chrome_for_profile(self):
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"""Kill any existing Chrome processes using this profile."""
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try:
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# Find and kill Chrome processes using this profile
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result = subprocess.run(
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["pgrep", "-f", f"user-data-dir={self.profile_dir}"],
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capture_output=True, text=True
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)
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if result.stdout.strip():
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pids = result.stdout.strip().split('\n')
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for pid in pids:
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try:
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subprocess.run(["kill", "-9", pid], check=False)
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except:
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pass
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time.sleep(1)
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except Exception as e:
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pass
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# Remove SingletonLock if exists
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lock_file = os.path.join(self.profile_dir, "SingletonLock")
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try:
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if os.path.islink(lock_file) or os.path.exists(lock_file):
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os.remove(lock_file)
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except:
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pass
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def get_driver(self, headless=False):
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"""Get or create the persistent browser instance."""
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with self._lock:
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if self._driver is None:
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print("[DentaQuest BrowserManager] Driver is None, creating new driver")
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self._kill_existing_chrome_for_profile()
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self._create_driver(headless)
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elif not self._is_alive():
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print("[DentaQuest BrowserManager] Driver not alive, recreating")
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self._kill_existing_chrome_for_profile()
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self._create_driver(headless)
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else:
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print("[DentaQuest BrowserManager] Reusing existing driver")
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return self._driver
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def _is_alive(self):
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"""Check if browser is still responsive."""
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try:
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if self._driver is None:
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return False
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url = self._driver.current_url
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return True
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except Exception as e:
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return False
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def _create_driver(self, headless=False):
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"""Create browser with persistent profile."""
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if self._driver:
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try:
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self._driver.quit()
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except:
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pass
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self._driver = None
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time.sleep(1)
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options = webdriver.ChromeOptions()
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if headless:
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options.add_argument("--headless")
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# Persistent profile - THIS IS THE KEY for device trust
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options.add_argument(f"--user-data-dir={self.profile_dir}")
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options.add_argument("--no-sandbox")
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options.add_argument("--disable-dev-shm-usage")
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prefs = {
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"download.default_directory": self.download_dir,
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"plugins.always_open_pdf_externally": True,
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"download.prompt_for_download": False,
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"download.directory_upgrade": True
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}
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options.add_experimental_option("prefs", prefs)
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service = Service(ChromeDriverManager().install())
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self._driver = webdriver.Chrome(service=service, options=options)
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self._driver.maximize_window()
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# Reset the session clear flag (file-based clearing is done on startup)
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self._needs_session_clear = False
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def quit_driver(self):
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"""Quit browser (only call on shutdown)."""
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with self._lock:
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if self._driver:
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try:
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self._driver.quit()
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except:
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pass
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self._driver = None
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# Also clean up any orphaned processes
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self._kill_existing_chrome_for_profile()
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# Singleton accessor
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_manager = None
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def get_browser_manager():
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global _manager
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if _manager is None:
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_manager = DentaQuestBrowserManager()
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return _manager
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def clear_dentaquest_session_on_startup():
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"""Called by agent.py on startup to clear session."""
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manager = get_browser_manager()
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manager.clear_session_on_startup()
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