|
| 1 | +""" |
| 2 | +OAuth Token Manager for Webex Authorization Flow |
| 3 | +Handles OAuth 2.0 token exchange and automatic token refresh |
| 4 | +""" |
| 5 | + |
| 6 | +import os |
| 7 | +import time |
| 8 | +import threading |
| 9 | +import requests |
| 10 | +from typing import Dict, Optional |
| 11 | +import logging |
| 12 | + |
| 13 | +logging.basicConfig(level=logging.INFO) |
| 14 | +logger = logging.getLogger(__name__) |
| 15 | + |
| 16 | + |
| 17 | +class OAuthTokenManager: |
| 18 | + """Manages OAuth tokens with automatic refresh""" |
| 19 | + |
| 20 | + # OAuth Configuration |
| 21 | + TOKEN_URL = "https://idbrokerbts.webex.com/idb/oauth2/v1/access_token" |
| 22 | + CLIENT_ID = "C01f064fa44b651f556122470b80ca0f2a5021293e9dbde4d9e1fd079d4ddc16a" |
| 23 | + CLIENT_SECRET = "e1c077c7d1f0505683ab177be14baee6511474f04b08628085de8b6ee36b0d2c" |
| 24 | + REDIRECT_URI = "http://localhost:3000" |
| 25 | + STATE = "set_state_here" |
| 26 | + |
| 27 | + # Token refresh interval (12 hours in seconds) |
| 28 | + REFRESH_INTERVAL = 12 * 60 * 60 |
| 29 | + |
| 30 | + def __init__(self): |
| 31 | + self.access_token: Optional[str] = None |
| 32 | + self.refresh_token: Optional[str] = None |
| 33 | + self.refresh_thread: Optional[threading.Thread] = None |
| 34 | + self.stop_refresh = threading.Event() |
| 35 | + |
| 36 | + def exchange_code_for_tokens(self, code: str) -> Dict[str, any]: |
| 37 | + """Exchange authorization code for access and refresh tokens""" |
| 38 | + data = { |
| 39 | + "grant_type": "authorization_code", |
| 40 | + "client_id": self.CLIENT_ID, |
| 41 | + "client_secret": self.CLIENT_SECRET, |
| 42 | + "code": code, |
| 43 | + "state": self.STATE, |
| 44 | + "redirect_uri": self.REDIRECT_URI |
| 45 | + } |
| 46 | + |
| 47 | + headers = { |
| 48 | + "Content-Type": "application/x-www-form-urlencoded" |
| 49 | + } |
| 50 | + |
| 51 | + logger.info("Exchanging authorization code for tokens...") |
| 52 | + response = requests.post(self.TOKEN_URL, data=data, headers=headers) |
| 53 | + response.raise_for_status() |
| 54 | + |
| 55 | + tokens = response.json() |
| 56 | + logger.info(f"Successfully obtained tokens. Access token expires in {tokens.get('expires_in')} seconds") |
| 57 | + |
| 58 | + return tokens |
| 59 | + |
| 60 | + def refresh_access_token(self) -> Dict[str, any]: |
| 61 | + """Refresh the access token using refresh token""" |
| 62 | + if not self.refresh_token: |
| 63 | + raise ValueError("No refresh token available") |
| 64 | + |
| 65 | + data = { |
| 66 | + "grant_type": "refresh_token", |
| 67 | + "refresh_token": self.refresh_token, |
| 68 | + "client_id": self.CLIENT_ID, |
| 69 | + "client_secret": self.CLIENT_SECRET |
| 70 | + } |
| 71 | + |
| 72 | + headers = { |
| 73 | + "Content-Type": "application/x-www-form-urlencoded" |
| 74 | + } |
| 75 | + |
| 76 | + logger.info("Refreshing access token...") |
| 77 | + response = requests.post(self.TOKEN_URL, data=data, headers=headers) |
| 78 | + response.raise_for_status() |
| 79 | + |
| 80 | + tokens = response.json() |
| 81 | + logger.info("Successfully refreshed access token") |
| 82 | + |
| 83 | + return tokens |
| 84 | + |
| 85 | + def set_environment_token(self, access_token: str): |
| 86 | + """Set the access token in environment variable""" |
| 87 | + os.environ["AZURE_OPENAI_API_KEY"] = access_token |
| 88 | + self.access_token = access_token |
| 89 | + logger.info("Set AZURE_OPENAI_API_KEY environment variable") |
| 90 | + |
| 91 | + def update_tokens(self, tokens: Dict[str, any]): |
| 92 | + """Update tokens from API response""" |
| 93 | + self.access_token = tokens.get("access_token") |
| 94 | + self.refresh_token = tokens.get("refresh_token") |
| 95 | + |
| 96 | + # Set environment variable |
| 97 | + if self.access_token: |
| 98 | + self.set_environment_token(self.access_token) |
| 99 | + |
| 100 | + def start_token_refresh_loop(self): |
| 101 | + """Start background thread to refresh token every 12 hours""" |
| 102 | + if self.refresh_thread and self.refresh_thread.is_alive(): |
| 103 | + logger.warning("Token refresh loop already running") |
| 104 | + return |
| 105 | + |
| 106 | + self.stop_refresh.clear() |
| 107 | + self.refresh_thread = threading.Thread(target=self._token_refresh_worker, daemon=True) |
| 108 | + self.refresh_thread.start() |
| 109 | + logger.info(f"Started token refresh loop (every {self.REFRESH_INTERVAL / 3600} hours)") |
| 110 | + |
| 111 | + def stop_token_refresh_loop(self): |
| 112 | + """Stop the background token refresh loop""" |
| 113 | + if self.refresh_thread and self.refresh_thread.is_alive(): |
| 114 | + logger.info("Stopping token refresh loop...") |
| 115 | + self.stop_refresh.set() |
| 116 | + self.refresh_thread.join(timeout=5) |
| 117 | + |
| 118 | + def _token_refresh_worker(self): |
| 119 | + """Background worker that refreshes tokens periodically""" |
| 120 | + while not self.stop_refresh.is_set(): |
| 121 | + # Wait for refresh interval |
| 122 | + if self.stop_refresh.wait(self.REFRESH_INTERVAL): |
| 123 | + break |
| 124 | + |
| 125 | + # Refresh token |
| 126 | + try: |
| 127 | + tokens = self.refresh_access_token() |
| 128 | + self.update_tokens(tokens) |
| 129 | + logger.info("Token refresh successful") |
| 130 | + except Exception as e: |
| 131 | + logger.error(f"Failed to refresh token: {e}") |
| 132 | + |
| 133 | + def initialize(self, authorization_code: Optional[str] = None): |
| 134 | + """Initialize tokens from authorization code (from env var or parameter)""" |
| 135 | + # Check if AZURE_OPENAI_API_KEY is already set |
| 136 | + existing_token = os.getenv("AZURE_OPENAI_API_KEY") |
| 137 | + if existing_token: |
| 138 | + logger.info("AZURE_OPENAI_API_KEY already set in environment, skipping OAuth initialization") |
| 139 | + self.access_token = existing_token |
| 140 | + return {"access_token": existing_token, "source": "environment"} |
| 141 | + |
| 142 | + # Get code from parameter or environment variable |
| 143 | + code = authorization_code or os.getenv("WEBEX_OAUTH_CODE") |
| 144 | + |
| 145 | + if not code: |
| 146 | + raise ValueError("Authorization code not provided. Set WEBEX_OAUTH_CODE environment variable or pass as parameter.") |
| 147 | + |
| 148 | + logger.info("Initializing OAuth with authorization code...") |
| 149 | + |
| 150 | + # Exchange code for tokens |
| 151 | + tokens = self.exchange_code_for_tokens(code) |
| 152 | + |
| 153 | + # Update tokens |
| 154 | + self.update_tokens(tokens) |
| 155 | + |
| 156 | + # Start refresh loop |
| 157 | + self.start_token_refresh_loop() |
| 158 | + |
| 159 | + return tokens |
| 160 | + |
| 161 | + |
| 162 | +# Global instance |
| 163 | +_token_manager: Optional[OAuthTokenManager] = None |
| 164 | + |
| 165 | + |
| 166 | +def get_token_manager() -> OAuthTokenManager: |
| 167 | + """Get or create the global token manager instance""" |
| 168 | + global _token_manager |
| 169 | + if _token_manager is None: |
| 170 | + _token_manager = OAuthTokenManager() |
| 171 | + return _token_manager |
| 172 | + |
| 173 | + |
| 174 | +if __name__ == "__main__": |
| 175 | + # Run OAuth token manager |
| 176 | + manager = get_token_manager() |
| 177 | + |
| 178 | + print("=" * 60) |
| 179 | + print("OAuth Token Manager") |
| 180 | + print("=" * 60) |
| 181 | + |
| 182 | + # Check for authorization code |
| 183 | + code = os.getenv("WEBEX_OAUTH_CODE") |
| 184 | + if not code: |
| 185 | + print("\n✗ Error: WEBEX_OAUTH_CODE environment variable not set") |
| 186 | + print("\nPlease set the authorization code:") |
| 187 | + print(" export WEBEX_OAUTH_CODE='your_code_here'") |
| 188 | + exit(1) |
| 189 | + |
| 190 | + try: |
| 191 | + print("\nInitializing OAuth flow...") |
| 192 | + tokens = manager.initialize() |
| 193 | + |
| 194 | + print("\n" + "=" * 60) |
| 195 | + print("✓ Successfully obtained tokens!") |
| 196 | + print("=" * 60) |
| 197 | + print(f"\nAccess Token: {tokens['access_token'][:50]}...") |
| 198 | + print(f"Refresh Token: {tokens['refresh_token'][:50]}...") |
| 199 | + print(f"Token Type: {tokens['token_type']}") |
| 200 | + print(f"Expires In: {tokens['expires_in']} seconds ({tokens['expires_in'] / 3600:.1f} hours)") |
| 201 | + print(f"Scope: {tokens['scope']}") |
| 202 | + print("\n✓ AZURE_OPENAI_API_KEY environment variable has been set") |
| 203 | + print("✓ Token refresh loop started (will refresh every 12 hours)") |
| 204 | + |
| 205 | + # Keep the script running to maintain the refresh loop |
| 206 | + print("\nPress Ctrl+C to exit...") |
| 207 | + try: |
| 208 | + while True: |
| 209 | + time.sleep(1) |
| 210 | + except KeyboardInterrupt: |
| 211 | + print("\nStopping token refresh loop...") |
| 212 | + manager.stop_token_refresh_loop() |
| 213 | + print("Goodbye!") |
| 214 | + |
| 215 | + except Exception as e: |
| 216 | + print(f"\n✗ Error: {e}") |
| 217 | + import traceback |
| 218 | + traceback.print_exc() |
| 219 | + exit(1) |
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