File size: 17,873 Bytes
c5c5634 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 |
import os
import json
import pickle
import base64
from pathlib import Path
from typing import Optional, Dict, Any
from cryptography.fernet import Fernet
import google.auth.transport.requests
import google_auth_oauthlib.flow
import googleapiclient.discovery
from google.oauth2.credentials import Credentials
from google.auth.transport.requests import Request
import webbrowser
import threading
import time
from http.server import HTTPServer, BaseHTTPRequestHandler
import urllib.parse as urlparse
from logger import logger
class OAuthCallbackHandler(BaseHTTPRequestHandler):
"""HTTP request handler for OAuth callback"""
def do_GET(self):
"""Handle GET request (OAuth callback)"""
# Parse the callback URL to extract authorization code
parsed_path = urlparse.urlparse(self.path)
query_params = urlparse.parse_qs(parsed_path.query)
if 'code' in query_params:
# Store the authorization code
self.server.auth_code = query_params['code'][0]
# Send success response
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
success_html = """
<html>
<head><title>Authentication Successful</title></head>
<body style="font-family: Arial, sans-serif; text-align: center; padding: 50px;">
<h1 style="color: #4CAF50;">✅ Authentication Successful!</h1>
<p>You have successfully authenticated with Gmail.</p>
<p>You can now close this window and return to Claude Desktop.</p>
<script>
setTimeout(function() {
window.close();
}, 3000);
</script>
</body>
</html>
"""
self.wfile.write(success_html.encode())
else:
# Send error response
self.send_response(400)
self.send_header('Content-type', 'text/html')
self.end_headers()
error_html = """
<html>
<head><title>Authentication Error</title></head>
<body style="font-family: Arial, sans-serif; text-align: center; padding: 50px;">
<h1 style="color: #f44336;">❌ Authentication Failed</h1>
<p>There was an error during authentication.</p>
<p>Please try again.</p>
</body>
</html>
"""
self.wfile.write(error_html.encode())
def log_message(self, format, *args):
"""Suppress server log messages"""
pass
class GmailOAuthManager:
"""Manages Gmail OAuth 2.0 authentication and token storage for multiple accounts"""
# Gmail API scopes
SCOPES = [
'https://www.googleapis.com/auth/gmail.readonly',
'https://www.googleapis.com/auth/gmail.modify'
]
def __init__(self, credentials_dir: str = None):
"""Initialize OAuth manager
Args:
credentials_dir: Directory to store credentials (defaults to ~/.mailquery_oauth)
"""
if credentials_dir is None:
credentials_dir = os.path.expanduser("~/.mailquery_oauth")
self.credentials_dir = Path(credentials_dir)
self.credentials_dir.mkdir(exist_ok=True)
# File paths
self.client_secrets_file = self.credentials_dir / "client_secret.json"
self.accounts_file = self.credentials_dir / "accounts.json"
self.encryption_key_file = self.credentials_dir / "key.key"
self.current_account_file = self.credentials_dir / "current_account.txt"
# Initialize encryption
self._init_encryption()
# OAuth flow settings
self.redirect_uri = "http://localhost:8080/oauth2callback"
# Current account
self.current_account_email = self._load_current_account()
def _init_encryption(self):
"""Initialize encryption for secure credential storage"""
if self.encryption_key_file.exists():
with open(self.encryption_key_file, 'rb') as key_file:
self.encryption_key = key_file.read()
else:
self.encryption_key = Fernet.generate_key()
with open(self.encryption_key_file, 'wb') as key_file:
key_file.write(self.encryption_key)
# Make key file readable only by owner
os.chmod(self.encryption_key_file, 0o600)
self.cipher_suite = Fernet(self.encryption_key)
def _load_current_account(self) -> Optional[str]:
"""Load the currently selected account"""
if self.current_account_file.exists():
try:
with open(self.current_account_file, 'r') as f:
return f.read().strip()
except Exception as e:
logger.error(f"Failed to load current account: {e}")
return None
def _save_current_account(self, email: str):
"""Save the currently selected account"""
try:
with open(self.current_account_file, 'w') as f:
f.write(email)
self.current_account_email = email
logger.info(f"Set current account to: {email}")
except Exception as e:
logger.error(f"Failed to save current account: {e}")
def setup_client_secrets(self, client_id: str, client_secret: str):
"""Setup OAuth client secrets
Args:
client_id: Google OAuth 2.0 client ID
client_secret: Google OAuth 2.0 client secret
"""
client_config = {
"web": {
"client_id": client_id,
"client_secret": client_secret,
"auth_uri": "https://accounts.google.com/o/oauth2/auth",
"token_uri": "https://oauth2.googleapis.com/token",
"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
"redirect_uris": [self.redirect_uri]
}
}
with open(self.client_secrets_file, 'w') as f:
json.dump(client_config, f, indent=2)
logger.info("Client secrets saved successfully")
def _encrypt_data(self, data: Any) -> bytes:
"""Encrypt data using Fernet encryption"""
serialized_data = pickle.dumps(data)
return self.cipher_suite.encrypt(serialized_data)
def _decrypt_data(self, encrypted_data: bytes) -> Any:
"""Decrypt data using Fernet encryption"""
decrypted_data = self.cipher_suite.decrypt(encrypted_data)
return pickle.loads(decrypted_data)
def get_authorization_url(self) -> str:
"""Get the authorization URL for OAuth flow
Returns:
Authorization URL that user should visit
"""
if not self.client_secrets_file.exists():
raise ValueError("Client secrets not found. Please run setup first.")
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
str(self.client_secrets_file),
scopes=self.SCOPES
)
flow.redirect_uri = self.redirect_uri
auth_url, _ = flow.authorization_url(
access_type='offline',
include_granted_scopes='true',
prompt='consent' # Force consent to get refresh token
)
return auth_url
def authenticate_interactive(self) -> bool:
"""Interactive authentication flow that opens browser
Returns:
True if authentication successful, False otherwise
"""
try:
# Start local HTTP server for OAuth callback
server = HTTPServer(('localhost', 8080), OAuthCallbackHandler)
server.auth_code = None
# Get authorization URL
auth_url = self.get_authorization_url()
logger.info("Opening browser for authentication...")
logger.info(f"If browser doesn't open, visit: {auth_url}")
# Open browser
webbrowser.open(auth_url)
# Start server in background thread
server_thread = threading.Thread(target=server.handle_request)
server_thread.daemon = True
server_thread.start()
# Wait for callback (max 5 minutes)
timeout = 300 # 5 minutes
start_time = time.time()
while server.auth_code is None and (time.time() - start_time) < timeout:
time.sleep(1)
if server.auth_code is None:
logger.error("Authentication timed out")
return False
# Exchange authorization code for credentials
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
str(self.client_secrets_file),
scopes=self.SCOPES
)
flow.redirect_uri = self.redirect_uri
flow.fetch_token(code=server.auth_code)
credentials = flow.credentials
# Get user email from credentials
user_email = self._get_email_from_credentials(credentials)
if not user_email:
logger.error("Failed to get user email from credentials")
return False
# Save encrypted credentials for this account
self._save_credentials(user_email, credentials)
# Set as current account
self._save_current_account(user_email)
logger.info("Authentication successful!")
return True
except Exception as e:
logger.error(f"Authentication failed: {e}")
return False
def _get_email_from_credentials(self, credentials: Credentials) -> Optional[str]:
"""Get email address from credentials"""
try:
service = googleapiclient.discovery.build(
'gmail', 'v1', credentials=credentials
)
profile = service.users().getProfile(userId='me').execute()
return profile.get('emailAddress')
except Exception as e:
logger.error(f"Failed to get email from credentials: {e}")
return None
def _save_credentials(self, email: str, credentials: Credentials):
"""Save encrypted credentials for a specific account"""
try:
# Load existing accounts
accounts = self._load_accounts()
# Encrypt and store credentials
encrypted_credentials = self._encrypt_data(credentials)
accounts[email] = base64.b64encode(encrypted_credentials).decode('utf-8')
# Save accounts file
with open(self.accounts_file, 'w') as f:
json.dump(accounts, f, indent=2)
# Make accounts file readable only by owner
os.chmod(self.accounts_file, 0o600)
logger.info(f"Credentials saved for account: {email}")
except Exception as e:
logger.error(f"Failed to save credentials for {email}: {e}")
raise
def _load_accounts(self) -> Dict[str, str]:
"""Load accounts data"""
if not self.accounts_file.exists():
return {}
try:
with open(self.accounts_file, 'r') as f:
return json.load(f)
except Exception as e:
logger.error(f"Failed to load accounts: {e}")
return {}
def _load_credentials(self, email: str) -> Optional[Credentials]:
"""Load and decrypt credentials for a specific account"""
accounts = self._load_accounts()
if email not in accounts:
return None
try:
encrypted_credentials = base64.b64decode(accounts[email])
credentials = self._decrypt_data(encrypted_credentials)
return credentials
except Exception as e:
logger.error(f"Failed to load credentials for {email}: {e}")
return None
def get_valid_credentials(self, email: str = None) -> Optional[Credentials]:
"""Get valid credentials for an account, refreshing if necessary
Args:
email: Email address of account (uses current account if None)
Returns:
Valid Credentials object or None if authentication required
"""
if email is None:
email = self.current_account_email
if not email:
logger.warning("No current account set")
return None
credentials = self._load_credentials(email)
if not credentials:
logger.warning(f"No stored credentials found for {email}")
return None
# Refresh if expired
if credentials.expired and credentials.refresh_token:
try:
logger.info(f"Refreshing expired credentials for {email}...")
credentials.refresh(Request())
self._save_credentials(email, credentials)
logger.info("Credentials refreshed successfully")
except Exception as e:
logger.error(f"Failed to refresh credentials for {email}: {e}")
return None
if not credentials.valid:
logger.warning(f"Credentials are not valid for {email}")
return None
return credentials
def is_authenticated(self, email: str = None) -> bool:
"""Check if user is authenticated
Args:
email: Email address to check (uses current account if None)
Returns:
True if valid credentials exist, False otherwise
"""
return self.get_valid_credentials(email) is not None
def switch_account(self, email: str) -> bool:
"""Switch to a different authenticated account
Args:
email: Email address to switch to
Returns:
True if switch successful, False if account not found or not authenticated
"""
if self.is_authenticated(email):
self._save_current_account(email)
logger.info(f"Switched to account: {email}")
return True
else:
logger.error(f"Account {email} is not authenticated")
return False
def list_accounts(self) -> Dict[str, bool]:
"""List all stored accounts and their authentication status
Returns:
Dictionary mapping email addresses to authentication status
"""
accounts = self._load_accounts()
result = {}
for email in accounts.keys():
result[email] = self.is_authenticated(email)
return result
def remove_account(self, email: str):
"""Remove an account and its credentials
Args:
email: Email address to remove
"""
accounts = self._load_accounts()
if email in accounts:
del accounts[email]
# Save updated accounts
with open(self.accounts_file, 'w') as f:
json.dump(accounts, f, indent=2)
# If this was the current account, clear it
if self.current_account_email == email:
if self.current_account_file.exists():
self.current_account_file.unlink()
self.current_account_email = None
logger.info(f"Removed account: {email}")
else:
logger.warning(f"Account {email} not found")
def clear_credentials(self):
"""Clear all stored credentials"""
if self.accounts_file.exists():
self.accounts_file.unlink()
if self.current_account_file.exists():
self.current_account_file.unlink()
self.current_account_email = None
logger.info("All credentials cleared")
def get_gmail_service(self, email: str = None):
"""Get authenticated Gmail service object
Args:
email: Email address (uses current account if None)
Returns:
Gmail service object or None if not authenticated
"""
credentials = self.get_valid_credentials(email)
if not credentials:
return None
try:
service = googleapiclient.discovery.build(
'gmail', 'v1', credentials=credentials
)
return service
except Exception as e:
logger.error(f"Failed to build Gmail service: {e}")
return None
def get_user_email(self, email: str = None) -> Optional[str]:
"""Get the authenticated user's email address
Args:
email: Email address (uses current account if None)
Returns:
User's email address or None if not authenticated
"""
if email is None:
return self.current_account_email
return email if self.is_authenticated(email) else None
def get_current_account(self) -> Optional[str]:
"""Get the currently selected account
Returns:
Current account email or None if no account selected
"""
return self.current_account_email
# Global OAuth manager instance
oauth_manager = GmailOAuthManager() |