""" This file handles authentication for the LiteLLM Proxy. it checks if the user passed a valid API Key to the LiteLLM Proxy Returns a UserAPIKeyAuth object if the API key is valid """ import asyncio import re import secrets from datetime import datetime, timezone from typing import List, Optional, Tuple, cast import fastapi from fastapi import HTTPException, Request, WebSocket, status from fastapi.security.api_key import APIKeyHeader import litellm from litellm._logging import verbose_logger, verbose_proxy_logger from litellm._service_logger import ServiceLogging from litellm.caching import DualCache from litellm.litellm_core_utils.dd_tracing import tracer from litellm.litellm_core_utils.dot_notation_indexing import get_nested_value from litellm.proxy._types import * from litellm.proxy.auth.auth_checks import ( ExperimentalUIJWTToken, _cache_key_object, _delete_cache_key_object, _get_user_role, _is_user_proxy_admin, _virtual_key_max_budget_alert_check, _virtual_key_max_budget_check, _virtual_key_soft_budget_check, can_key_call_model, common_checks, get_end_user_object, get_jwt_key_mapping_object, get_key_object, get_project_object, get_team_object, get_user_object, is_valid_fallback_model) from litellm.proxy.auth.auth_exception_handler import \ UserAPIKeyAuthExceptionHandler from litellm.proxy.auth.auth_utils import (abbreviate_api_key, get_end_user_id_from_request_body, get_model_from_request, get_request_route, normalize_request_route, pre_db_read_auth_checks, route_in_additonal_public_routes) from litellm.proxy.auth.handle_jwt import JWTAuthManager, JWTHandler from litellm.proxy.auth.oauth2_check import Oauth2Handler from litellm.proxy.auth.oauth2_proxy_hook import handle_oauth2_proxy_request from litellm.proxy.auth.route_checks import RouteChecks from litellm.proxy.common_utils.cache_coordinator import \ EventDrivenCacheCoordinator from litellm.proxy.common_utils.http_parsing_utils import ( _read_request_body, _safe_get_request_headers, populate_request_with_path_params) from litellm.proxy.common_utils.realtime_utils import _realtime_request_body from litellm.proxy.utils import PrismaClient, ProxyLogging from litellm.secret_managers.main import get_secret_bool from litellm.types.services import ServiceTypes try: from litellm_enterprise.proxy.auth.user_api_key_auth import \ enterprise_custom_auth as _enterprise_custom_auth enterprise_custom_auth: Optional[Callable] = _enterprise_custom_auth except ImportError as e: verbose_proxy_logger.debug(f"Error in enterprise custom auth: {e}") enterprise_custom_auth = None user_api_key_service_logger_obj = ServiceLogging() # used for tracking latency on OTEL custom_litellm_key_header = APIKeyHeader( name=SpecialHeaders.custom_litellm_api_key.value, auto_error=False, description="Bearer token", ) api_key_header = APIKeyHeader( name=SpecialHeaders.openai_authorization.value, auto_error=False, description="Bearer token", ) azure_api_key_header = APIKeyHeader( name=SpecialHeaders.azure_authorization.value, auto_error=False, description="Some older versions of the openai Python package will send an API-Key header with just the API key ", ) anthropic_api_key_header = APIKeyHeader( name=SpecialHeaders.anthropic_authorization.value, auto_error=False, description="If anthropic client used.", ) google_ai_studio_api_key_header = APIKeyHeader( name=SpecialHeaders.google_ai_studio_authorization.value, auto_error=False, description="If google ai studio client used.", ) azure_apim_header = APIKeyHeader( name=SpecialHeaders.azure_apim_authorization.value, auto_error=False, description="The default name of the subscription key header of Azure", ) def _get_bearer_token_or_received_api_key(api_key: str) -> str: if api_key.startswith("Bearer "): # ensure Bearer token passed in api_key = api_key.replace("Bearer ", "") # extract the token elif api_key.startswith("Basic "): api_key = api_key.replace("Basic ", "") # handle langfuse input elif api_key.startswith("bearer "): api_key = api_key.replace("bearer ", "") elif api_key.startswith("AWS4-HMAC-SHA256"): # Handle AWS Signature V4 format from LangChain # Format: AWS4-HMAC-SHA256 Credential=Bearer sk-12345/date/region/service/aws4_request, SignedHeaders=..., Signature=... # Extract the Bearer token from the Credential field match = re.search(r"Credential=Bearer\s+([^/\s,]+)", api_key) if match: api_key = match.group(1) else: # If no Bearer token found in Credential, try to extract just the credential value match = re.search(r"Credential=([^/\s,]+)", api_key) if match: api_key = match.group(1) return api_key def _get_bearer_token( api_key: str, ): if api_key.startswith("Bearer "): # ensure Bearer token passed in api_key = api_key.replace("Bearer ", "") # extract the token elif api_key.startswith("Basic "): api_key = api_key.replace("Basic ", "") # handle langfuse input elif api_key.startswith("bearer "): api_key = api_key.replace("bearer ", "") elif api_key.startswith("AWS4-HMAC-SHA256"): # Handle AWS Signature V4 format from LangChain # Format: AWS4-HMAC-SHA256 Credential=Bearer sk-12345/date/region/service/aws4_request, SignedHeaders=..., Signature=... # Extract the Bearer token from the Credential field match = re.search(r"Credential=Bearer\s+([^/\s,]+)", api_key) if match: api_key = match.group(1) else: # If no Bearer token found in Credential, try to extract just the credential value match = re.search(r"Credential=([^/\s,]+)", api_key) if match: api_key = match.group(1) else: api_key = "" else: api_key = "" return api_key def _apply_budget_limits_to_end_user_params( end_user_params: dict, budget_info: LiteLLM_BudgetTable, end_user_id: Optional[str], ) -> None: """ Helper function to apply budget limits to end user parameters. Args: end_user_params: Dictionary to update with budget parameters budget_info: Budget table object containing limits end_user_id: ID of the end user for logging """ if budget_info.tpm_limit is not None: end_user_params["end_user_tpm_limit"] = budget_info.tpm_limit if budget_info.rpm_limit is not None: end_user_params["end_user_rpm_limit"] = budget_info.rpm_limit if budget_info.max_budget is not None: end_user_params["end_user_max_budget"] = budget_info.max_budget if budget_info.model_max_budget is not None: end_user_params["end_user_model_max_budget"] = budget_info.model_max_budget verbose_proxy_logger.debug(f"Applied budget limits to end user {end_user_id}") async def user_api_key_auth_websocket(websocket: WebSocket): # Accept the WebSocket connection scope_headers = list(websocket.scope.get("headers") or []) request = Request(scope={"type": "http", "headers": scope_headers}) request._url = websocket.url query_params = websocket.query_params model = query_params.get("model") async def return_body(): return _realtime_request_body(model) request.body = return_body # type: ignore authorization = websocket.headers.get("authorization") # If no Authorization header, try the api-key header if not authorization: api_key = websocket.headers.get("api-key") if not api_key: # Try extracting from WebSocket subprotocol (browser clients) for protocol in websocket.headers.get("sec-websocket-protocol", "").split( "," ): protocol = protocol.strip() if protocol.startswith("openai-insecure-api-key."): api_key = protocol[len("openai-insecure-api-key.") :] break if not api_key: await websocket.close(code=status.WS_1008_POLICY_VIOLATION) raise HTTPException(status_code=403, detail="No API key provided") else: # Extract the API key from the Bearer token if not authorization.startswith("Bearer "): await websocket.close(code=status.WS_1008_POLICY_VIOLATION) raise HTTPException( status_code=403, detail="Invalid Authorization header format" ) api_key = authorization[len("Bearer ") :].strip() # Call user_api_key_auth with the extracted API key # Note: You'll need to modify this to work with WebSocket context if needed try: return await user_api_key_auth(request=request, api_key=f"Bearer {api_key}") except Exception as e: verbose_proxy_logger.exception(e) await websocket.close(code=status.WS_1008_POLICY_VIOLATION) raise HTTPException(status_code=403, detail=str(e)) def update_valid_token_with_end_user_params( valid_token: UserAPIKeyAuth, end_user_params: dict ) -> UserAPIKeyAuth: valid_token.end_user_id = end_user_params.get("end_user_id") # Only overwrite token fields when the DB-derived value is not None. # This prevents DB lookups (where the budget table has no value set) # from silently clearing values that a custom auth function may have # already set on the token. if end_user_params.get("end_user_tpm_limit") is not None: valid_token.end_user_tpm_limit = end_user_params["end_user_tpm_limit"] if end_user_params.get("end_user_rpm_limit") is not None: valid_token.end_user_rpm_limit = end_user_params["end_user_rpm_limit"] if end_user_params.get("allowed_model_region") is not None: valid_token.allowed_model_region = end_user_params["allowed_model_region"] if end_user_params.get("end_user_model_max_budget") is not None: valid_token.end_user_model_max_budget = end_user_params[ "end_user_model_max_budget" ] return valid_token # Reusable coordinator for global spend to prevent cache stampede _global_spend_coordinator = EventDrivenCacheCoordinator(log_prefix="[GLOBAL SPEND]") async def _fetch_global_spend_with_event_coordination( cache_key: str, user_api_key_cache: DualCache, prisma_client: PrismaClient, ) -> Optional[float]: """ Fetch global spend with event-driven coordination to prevent cache stampede. Uses EventDrivenCacheCoordinator: first request queries DB and signals others when done. """ async def _load_global_spend() -> Optional[float]: sql_query = """SELECT SUM(spend) AS total_spend FROM "MonthlyGlobalSpend";""" response = await prisma_client.db.query_raw(query=sql_query) val = response[0]["total_spend"] return float(val) if val is not None else None return await _global_spend_coordinator.get_or_load( cache_key=cache_key, cache=user_api_key_cache, load_fn=_load_global_spend, ) async def get_global_proxy_spend( litellm_proxy_admin_name: str, user_api_key_cache: DualCache, prisma_client: Optional[PrismaClient], token: str, proxy_logging_obj: ProxyLogging, ) -> Optional[float]: global_proxy_spend = None if ( litellm.max_budget > 0 and prisma_client is not None ): # user set proxy max budget # Use event-driven coordination to prevent cache stampede cache_key = "{}:spend".format(litellm_proxy_admin_name) global_proxy_spend = await _fetch_global_spend_with_event_coordination( cache_key=cache_key, user_api_key_cache=user_api_key_cache, prisma_client=prisma_client, ) if global_proxy_spend is not None: user_info = CallInfo( user_id=litellm_proxy_admin_name, max_budget=litellm.max_budget, spend=global_proxy_spend, token=token, event_group=Litellm_EntityType.PROXY, ) asyncio.create_task( proxy_logging_obj.budget_alerts( type="proxy_budget", user_info=user_info, ) ) return global_proxy_spend def get_rbac_role(jwt_handler: JWTHandler, scopes: List[str]) -> str: is_admin = jwt_handler.is_admin(scopes=scopes) if is_admin: return LitellmUserRoles.PROXY_ADMIN else: return LitellmUserRoles.TEAM def get_api_key( custom_litellm_key_header: Optional[str], api_key: str, azure_api_key_header: Optional[str], anthropic_api_key_header: Optional[str], google_ai_studio_api_key_header: Optional[str], azure_apim_header: Optional[str], pass_through_endpoints: Optional[List[dict]], route: str, request: Request, ) -> Tuple[str, Optional[str]]: """ Returns: Tuple[Optional[str], Optional[str]]: Tuple of the api_key and the passed_in_key """ from litellm.proxy.auth.route_checks import RouteChecks from litellm.proxy.common_utils.http_parsing_utils import \ _safe_get_request_query_params api_key = api_key passed_in_key: Optional[str] = None if isinstance(custom_litellm_key_header, str): passed_in_key = custom_litellm_key_header api_key = _get_bearer_token_or_received_api_key(custom_litellm_key_header) elif isinstance(api_key, str) and len(api_key) > 0: passed_in_key = api_key api_key = _get_bearer_token(api_key=api_key) elif isinstance(azure_api_key_header, str): passed_in_key = azure_api_key_header api_key = azure_api_key_header elif isinstance(anthropic_api_key_header, str): passed_in_key = anthropic_api_key_header api_key = anthropic_api_key_header elif isinstance(google_ai_studio_api_key_header, str): passed_in_key = google_ai_studio_api_key_header api_key = google_ai_studio_api_key_header elif isinstance(azure_apim_header, str): passed_in_key = azure_apim_header api_key = azure_apim_header elif ( RouteChecks.is_generate_content_route(route=route) and request is not None and _safe_get_request_query_params(request).get("key") ): google_auth_key: str = _safe_get_request_query_params(request).get("key") or "" passed_in_key = google_auth_key api_key = google_auth_key elif pass_through_endpoints is not None: for endpoint in pass_through_endpoints: if endpoint.get("path", "") == route: headers: Optional[dict] = endpoint.get("headers", None) if headers is not None: header_key: str = headers.get("litellm_user_api_key", "") if request.headers.get(header_key) is not None: api_key = request.headers.get(header_key) or "" passed_in_key = api_key return api_key, passed_in_key async def check_api_key_for_custom_headers_or_pass_through_endpoints( request: Request, route: str, pass_through_endpoints: Optional[List[dict]], api_key: str, ) -> Union[UserAPIKeyAuth, str]: is_mapped_pass_through_route: bool = False for mapped_route in LiteLLMRoutes.mapped_pass_through_routes.value: # type: ignore if route.startswith(mapped_route): is_mapped_pass_through_route = True if is_mapped_pass_through_route: if request.headers.get("litellm_user_api_key") is not None: api_key = request.headers.get("litellm_user_api_key") or "" if pass_through_endpoints is not None: for endpoint in pass_through_endpoints: if isinstance(endpoint, dict) and endpoint.get("path", "") == route: ## IF AUTH DISABLED if endpoint.get("auth") is not True: return UserAPIKeyAuth() ## IF AUTH ENABLED ### IF CUSTOM PARSER REQUIRED if ( endpoint.get("custom_auth_parser") is not None and endpoint.get("custom_auth_parser") == "langfuse" ): # langfuse returns {'Authorization': 'Basic '} # check the langfuse public key if it contains the litellm api key import base64 api_key = api_key.replace("Basic ", "").strip() decoded_bytes = base64.b64decode(api_key) decoded_str = decoded_bytes.decode("utf-8") api_key = decoded_str.split(":")[0] else: headers = endpoint.get("headers", None) if headers is not None: header_key = headers.get("litellm_user_api_key", "") if ( isinstance(request.headers, dict) and request.headers.get(key=header_key) is not None # type: ignore ): api_key = request.headers.get(key=header_key) # type: ignore return api_key async def _resolve_jwt_to_virtual_key( jwt_claims: dict, jwt_handler: JWTHandler, prisma_client: Optional[PrismaClient], user_api_key_cache: DualCache, parent_otel_span: Optional[Span], proxy_logging_obj: ProxyLogging, ) -> Optional[UserAPIKeyAuth]: virtual_key_claim_field = jwt_handler.litellm_jwtauth.virtual_key_claim_field if virtual_key_claim_field is None: return None claim_value = get_nested_value( data=jwt_claims, key_path=virtual_key_claim_field, default=None, ) if claim_value is None: verbose_proxy_logger.debug( f"JWT Key Mapping: Claim field '{virtual_key_claim_field}' not found in JWT claims." ) return None cache_key = f"jwt_key_mapping:{virtual_key_claim_field}:{claim_value}" cached_mapping = await user_api_key_cache.async_get_cache(cache_key) if cached_mapping == "__NO_MAPPING__": return None elif cached_mapping is not None: return await get_key_object( hashed_token=cached_mapping, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) if prisma_client is None: return None token_hash = await get_jwt_key_mapping_object( jwt_claim_name=virtual_key_claim_field, jwt_claim_value=str(claim_value), prisma_client=prisma_client, ) if token_hash is not None: await user_api_key_cache.async_set_cache( key=cache_key, value=token_hash, ttl=jwt_handler.litellm_jwtauth.virtual_key_mapping_cache_ttl, ) return await get_key_object( hashed_token=token_hash, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) else: await user_api_key_cache.async_set_cache( key=cache_key, value="__NO_MAPPING__", ttl=jwt_handler.litellm_jwtauth.virtual_key_mapping_cache_ttl, ) return None async def _user_api_key_auth_builder( # noqa: PLR0915 request: Request, api_key: str, azure_api_key_header: str, anthropic_api_key_header: Optional[str], google_ai_studio_api_key_header: Optional[str], azure_apim_header: Optional[str], request_data: dict, custom_litellm_key_header: Optional[str] = None, ) -> UserAPIKeyAuth: from litellm.proxy.proxy_server import (general_settings, jwt_handler, litellm_proxy_admin_name, llm_model_list, llm_router, master_key, model_max_budget_limiter, open_telemetry_logger, prisma_client, proxy_logging_obj, user_api_key_cache, user_custom_auth) parent_otel_span: Optional[Span] = None start_time = datetime.now() route: str = get_request_route(request=request) valid_token: Optional[UserAPIKeyAuth] = None custom_auth_api_key: bool = False try: # get the request body await pre_db_read_auth_checks( request_data=request_data, request=request, route=route, ) pass_through_endpoints: Optional[List[dict]] = general_settings.get( "pass_through_endpoints", None ) ## CHECK IF X-LITELM-API-KEY IS PASSED IN - supercedes Authorization header api_key, passed_in_key = get_api_key( custom_litellm_key_header=custom_litellm_key_header, api_key=api_key, azure_api_key_header=azure_api_key_header, anthropic_api_key_header=anthropic_api_key_header, google_ai_studio_api_key_header=google_ai_studio_api_key_header, azure_apim_header=azure_apim_header, pass_through_endpoints=pass_through_endpoints, route=route, request=request, ) # if user wants to pass LiteLLM_Master_Key as a custom header, example pass litellm keys as X-LiteLLM-Key: Bearer sk-1234 custom_litellm_key_header_name = general_settings.get("litellm_key_header_name") if custom_litellm_key_header_name is not None: api_key = get_api_key_from_custom_header( request=request, custom_litellm_key_header_name=custom_litellm_key_header_name, ) if open_telemetry_logger is not None: parent_otel_span = ( open_telemetry_logger.create_litellm_proxy_request_started_span( start_time=start_time, headers=_safe_get_request_headers(request), ) ) ### USER-DEFINED AUTH FUNCTION ### if enterprise_custom_auth is not None: response = await enterprise_custom_auth( request=request, api_key=api_key, user_custom_auth=user_custom_auth ) if response is not None and isinstance(response, UserAPIKeyAuth): validated = UserAPIKeyAuth.model_validate(response) validated = await _run_post_custom_auth_checks( valid_token=validated, request=request, request_data=request_data, route=route, parent_otel_span=parent_otel_span, ) return validated elif response is not None and isinstance(response, str): api_key = response custom_auth_api_key = True elif user_custom_auth is not None: response = await user_custom_auth(request=request, api_key=api_key) # type: ignore validated = UserAPIKeyAuth.model_validate(response) validated = await _run_post_custom_auth_checks( valid_token=validated, request=request, request_data=request_data, route=route, parent_otel_span=parent_otel_span, ) return validated ### LITELLM-DEFINED AUTH FUNCTION ### #### IF JWT #### """ LiteLLM supports using JWTs. Enable this in proxy config, by setting ``` general_settings: enable_jwt_auth: true ``` """ ######## Route Checks Before Reading DB / Cache for "token" ################ if ( route in LiteLLMRoutes.public_routes.value # type: ignore or route_in_additonal_public_routes(current_route=route) ): # check if public endpoint return UserAPIKeyAuth(user_role=LitellmUserRoles.INTERNAL_USER_VIEW_ONLY) ########## End of Route Checks Before Reading DB / Cache for "token" ######## if general_settings.get("enable_oauth2_auth", False) is True: # Only apply OAuth2 M2M authentication to LLM API routes and info routes, not UI/management routes # This allows UI SSO to work separately from API M2M authentication # Note: Info routes are already scoped to the user if RouteChecks.is_llm_api_route(route=route) or RouteChecks.is_info_route(route=route): # When both OAuth2 and JWT auth are enabled, use token format to decide: # - JWT tokens (3 dot-separated parts) -> skip OAuth2, fall through to JWT handler # - Opaque tokens -> use OAuth2 handler # This allows JWT for users and OAuth2 for M2M on the same instance is_jwt_token = jwt_handler.is_jwt(token=api_key) if general_settings.get("enable_jwt_auth", False) is True else False if not is_jwt_token: # return UserAPIKeyAuth object # helper to check if the api_key is a valid oauth2 token from litellm.proxy.proxy_server import premium_user if premium_user is not True: raise ValueError( "Oauth2 token validation is only available for premium users" + CommonProxyErrors.not_premium_user.value ) return await Oauth2Handler.check_oauth2_token(token=api_key) if general_settings.get("enable_oauth2_proxy_auth", False) is True: return await handle_oauth2_proxy_request(request=request) if general_settings.get("enable_jwt_auth", False) is True: from litellm.proxy.proxy_server import premium_user if premium_user is not True: raise ValueError( f"JWT Auth is an enterprise only feature. {CommonProxyErrors.not_premium_user.value}" ) is_jwt = jwt_handler.is_jwt(token=api_key) verbose_proxy_logger.debug("is_jwt: %s", is_jwt) if is_jwt: # Try JWT-to-Virtual-Key mapping first to avoid # unnecessary DB queries in auth_builder do_standard_jwt_auth = True if jwt_handler.litellm_jwtauth.virtual_key_claim_field is not None: # Decode JWT to get claims without running full auth_builder if jwt_handler.litellm_jwtauth.oidc_userinfo_enabled: jwt_claims = await jwt_handler.get_oidc_userinfo(token=api_key) else: jwt_claims = await jwt_handler.auth_jwt(token=api_key) valid_token = await _resolve_jwt_to_virtual_key( jwt_claims=jwt_claims, jwt_handler=jwt_handler, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) if valid_token is not None: api_key = valid_token.token or "" do_standard_jwt_auth = False # Fall through to virtual key checks if do_standard_jwt_auth: result = await JWTAuthManager.auth_builder( request_data=request_data, general_settings=general_settings, api_key=api_key, jwt_handler=jwt_handler, route=route, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, parent_otel_span=parent_otel_span, request_headers=_safe_get_request_headers(request), ) is_proxy_admin = result["is_proxy_admin"] team_id = result["team_id"] team_object = result["team_object"] user_id = result["user_id"] user_object = result["user_object"] end_user_id = result["end_user_id"] end_user_object = result["end_user_object"] org_id = result["org_id"] token = result["token"] team_membership: Optional[LiteLLM_TeamMembership] = result.get( "team_membership", None ) global_proxy_spend = await get_global_proxy_spend( litellm_proxy_admin_name=litellm_proxy_admin_name, user_api_key_cache=user_api_key_cache, prisma_client=prisma_client, token=token, proxy_logging_obj=proxy_logging_obj, ) if is_proxy_admin: return UserAPIKeyAuth( api_key=None, user_role=LitellmUserRoles.PROXY_ADMIN, user_id=user_id, team_id=team_id, team_alias=( team_object.team_alias if team_object is not None else None ), team_metadata=( team_object.metadata if team_object is not None else None ), org_id=org_id, end_user_id=end_user_id, parent_otel_span=parent_otel_span, ) valid_token = UserAPIKeyAuth( api_key=None, team_id=team_id, team_alias=( team_object.team_alias if team_object is not None else None ), team_tpm_limit=( team_object.tpm_limit if team_object is not None else None ), team_rpm_limit=( team_object.rpm_limit if team_object is not None else None ), team_models=( team_object.models if team_object is not None else [] ), user_role=( LitellmUserRoles(user_object.user_role) if user_object is not None and user_object.user_role is not None else LitellmUserRoles.INTERNAL_USER ), user_id=user_id, org_id=org_id, parent_otel_span=parent_otel_span, end_user_id=end_user_id, user_tpm_limit=( user_object.tpm_limit if user_object is not None else None ), user_rpm_limit=( user_object.rpm_limit if user_object is not None else None ), team_member_rpm_limit=( team_membership.safe_get_team_member_rpm_limit() if team_membership is not None else None ), team_member_tpm_limit=( team_membership.safe_get_team_member_tpm_limit() if team_membership is not None else None ), team_metadata=( team_object.metadata if team_object is not None else None ), ) # Check if model has zero cost - if so, skip all budget checks model = get_model_from_request(request_data, route) skip_budget_checks = False if model is not None and llm_router is not None: from litellm.proxy.auth.auth_checks import \ _is_model_cost_zero skip_budget_checks = _is_model_cost_zero( model=model, llm_router=llm_router ) if skip_budget_checks: verbose_proxy_logger.info( f"Skipping all budget checks for zero-cost model: {model}" ) # Fetch project object for JWT path if project_id is set _jwt_project_obj = None if valid_token.project_id is not None: _jwt_project_obj = await get_project_object( project_id=valid_token.project_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) if _jwt_project_obj is not None: valid_token.project_metadata = _jwt_project_obj.metadata # run through common checks _ = await common_checks( request=request, request_body=request_data, team_object=team_object, user_object=user_object, end_user_object=end_user_object, general_settings=general_settings, global_proxy_spend=global_proxy_spend, route=route, llm_router=llm_router, proxy_logging_obj=proxy_logging_obj, valid_token=valid_token, skip_budget_checks=skip_budget_checks, project_object=_jwt_project_obj, ) # return UserAPIKeyAuth object return cast(UserAPIKeyAuth, valid_token) #### ELSE #### ## CHECK PASS-THROUGH ENDPOINTS ## if not custom_auth_api_key: response = await check_api_key_for_custom_headers_or_pass_through_endpoints( request=request, route=route, pass_through_endpoints=pass_through_endpoints, api_key=api_key, ) if isinstance(response, str): api_key = response elif isinstance(response, UserAPIKeyAuth): return response if master_key is None: if isinstance(api_key, str): return UserAPIKeyAuth( api_key=api_key, user_role=LitellmUserRoles.INTERNAL_USER, parent_otel_span=parent_otel_span, ) else: return UserAPIKeyAuth( user_role=LitellmUserRoles.INTERNAL_USER, parent_otel_span=parent_otel_span, ) elif api_key is None: # only require api key if master key is set raise Exception("No api key passed in.") elif api_key == "": # missing 'Bearer ' prefix raise Exception( "Malformed API Key passed in. Ensure Key has `Bearer ` prefix." ) if route == "/user/auth": if general_settings.get("allow_user_auth", False) is True: return UserAPIKeyAuth() else: raise HTTPException( status_code=status.HTTP_403_FORBIDDEN, detail="'allow_user_auth' not set or set to False", ) ## Check END-USER OBJECT _end_user_object = None end_user_params = {} end_user_id = get_end_user_id_from_request_body( request_data, _safe_get_request_headers(request) ) if end_user_id: try: end_user_params["end_user_id"] = end_user_id # get end-user object _end_user_object = await get_end_user_object( end_user_id=end_user_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, route=route, ) if _end_user_object is not None: end_user_params["allowed_model_region"] = ( _end_user_object.allowed_model_region ) if _end_user_object.litellm_budget_table is not None: _apply_budget_limits_to_end_user_params( end_user_params=end_user_params, budget_info=_end_user_object.litellm_budget_table, end_user_id=end_user_id, ) elif litellm.max_end_user_budget_id is not None: # End user doesn't exist yet, but apply default budget limits if configured from litellm.proxy.auth.auth_checks import \ get_default_end_user_budget default_budget = await get_default_end_user_budget( prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, ) if default_budget is not None: _apply_budget_limits_to_end_user_params( end_user_params=end_user_params, budget_info=default_budget, end_user_id=end_user_id, ) except Exception as e: if isinstance(e, litellm.BudgetExceededError): raise e verbose_proxy_logger.debug( "Unable to find user in db. Error - {}".format(str(e)) ) pass ### CHECK IF ADMIN ### # note: never string compare api keys, this is vulenerable to a time attack. Use secrets.compare_digest instead ### CHECK IF ADMIN ### # note: never string compare api keys, this is vulenerable to a time attack. Use secrets.compare_digest instead if valid_token is None: ## Check CACHE try: valid_token = await get_key_object( hashed_token=hash_token(api_key), prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, check_cache_only=True, ) except Exception: verbose_logger.debug("api key not found in cache.") valid_token = None ## Check UI Hash Key if valid_token is None and get_secret_bool("EXPERIMENTAL_UI_LOGIN"): valid_token = ExperimentalUIJWTToken.get_key_object_from_ui_hash_key( api_key ) if ( valid_token is not None and isinstance(valid_token, UserAPIKeyAuth) and valid_token.user_role == LitellmUserRoles.PROXY_ADMIN ): if valid_token.expires is not None: current_time = datetime.now(timezone.utc) if isinstance(valid_token.expires, datetime): expiry_time = valid_token.expires else: expiry_time = datetime.fromisoformat(valid_token.expires) if ( expiry_time.tzinfo is None or expiry_time.tzinfo.utcoffset(expiry_time) is None ): expiry_time = expiry_time.replace(tzinfo=timezone.utc) if expiry_time < current_time: await _delete_cache_key_object( hashed_token=hash_token(api_key), user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) raise ProxyException( message=f"Authentication Error - Expired Key. Key Expiry time {expiry_time} and current time {current_time}", type=ProxyErrorTypes.expired_key, code=400, param=abbreviate_api_key(api_key=api_key), ) valid_token = update_valid_token_with_end_user_params( valid_token=valid_token, end_user_params=end_user_params ) valid_token.parent_otel_span = parent_otel_span if _end_user_object is not None: valid_token.end_user_object_permission = ( _end_user_object.object_permission ) return valid_token if ( valid_token is not None and isinstance(valid_token, UserAPIKeyAuth) and valid_token.team_id is not None ): ## UPDATE TEAM VALUES BASED ON CACHED TEAM OBJECT - allows `/team/update` values to work for cached token try: team_obj: LiteLLM_TeamTableCachedObj = await get_team_object( team_id=valid_token.team_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, check_cache_only=True, ) if ( team_obj.last_refreshed_at is not None and valid_token.last_refreshed_at is not None and team_obj.last_refreshed_at > valid_token.last_refreshed_at ): team_obj_dict = team_obj.__dict__ for k, v in team_obj_dict.items(): field_name = f"team_{k}" if field_name in valid_token.__fields__: setattr(valid_token, field_name, v) except Exception as e: verbose_logger.debug( e ) # moving from .warning to .debug as it spams logs when team missing from cache. try: is_master_key_valid = secrets.compare_digest(api_key, master_key) # type: ignore except Exception: is_master_key_valid = False ## VALIDATE MASTER KEY ## try: assert isinstance(master_key, str) except Exception: raise HTTPException( status_code=500, detail={ "Master key must be a valid string. Current type={}".format( type(master_key) ) }, ) if is_master_key_valid: _user_api_key_obj = await _return_user_api_key_auth_obj( user_obj=None, user_role=LitellmUserRoles.PROXY_ADMIN, api_key=master_key, parent_otel_span=parent_otel_span, valid_token_dict={ **end_user_params, "user_id": litellm_proxy_admin_name, }, route=route, start_time=start_time, ) asyncio.create_task( _cache_key_object( hashed_token=hash_token(master_key), user_api_key_obj=_user_api_key_obj, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) ) _user_api_key_obj = update_valid_token_with_end_user_params( valid_token=_user_api_key_obj, end_user_params=end_user_params ) return _user_api_key_obj ## IF it's not a master key ## Route should not be in master_key_only_routes if route in LiteLLMRoutes.master_key_only_routes.value: # type: ignore raise Exception( f"Tried to access route={route}, which is only for MASTER KEY" ) ## Check DB if ( prisma_client is None ): # if both master key + user key submitted, and user key != master key, and no db connected, raise an error raise ProxyException( message="No connected db.", type=ProxyErrorTypes.no_db_connection, code=400, param=None, ) if valid_token is None: if isinstance( api_key, str ): # if generated token, make sure it starts with sk-. _masked_key = ( "{}****{}".format(api_key[:4], api_key[-4:]) if len(api_key) > 8 else "****" ) assert api_key.startswith( "sk-" ), "LiteLLM Virtual Key expected. Received={}, expected to start with 'sk-'.".format( _masked_key ) # prevent token hashes from being used else: verbose_logger.warning( "litellm.proxy.proxy_server.user_api_key_auth(): Warning - Key is not a string. Got type={}".format( type(api_key) if api_key is not None else "None" ) ) abbreviated_api_key = abbreviate_api_key(api_key=api_key) if api_key.startswith("sk-"): api_key = hash_token(token=api_key) try: valid_token = await get_key_object( hashed_token=api_key, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) except ProxyException as e: if e.code == 401 or e.code == "401": e.message = "Authentication Error, Invalid proxy server token passed. Received API Key = {}, Key Hash (Token) ={}. Unable to find token in cache or `LiteLLM_VerificationTokenTable`".format( abbreviated_api_key, api_key ) raise e # update end-user params on valid token # These can change per request - it's important to update them here valid_token.end_user_id = end_user_params.get("end_user_id") valid_token.end_user_tpm_limit = end_user_params.get("end_user_tpm_limit") valid_token.end_user_rpm_limit = end_user_params.get("end_user_rpm_limit") valid_token.allowed_model_region = end_user_params.get( "allowed_model_region" ) # update key budget with temp budget increase valid_token = _update_key_budget_with_temp_budget_increase( valid_token ) # updating it here, allows all downstream reporting / checks to use the updated budget user_obj: Optional[LiteLLM_UserTable] = None valid_token_dict: dict = {} if valid_token is not None: # Got Valid Token from Cache, DB # Run checks for # 1. If token can call model ## 1a. If token can call fallback models (if client-side fallbacks given) # 2. If user_id for this token is in budget # 3. If the user spend within their own team is within budget # 4. If 'user' passed to /chat/completions, /embeddings endpoint is in budget # 5. If token is expired # 6. If token spend is under Budget for the token # 7. If token spend per model is under budget per model # 8. If token spend is under team budget # 9. If team spend is under team budget ## base case ## key is disabled if valid_token.blocked is True: raise Exception( "Key is blocked. Update via `/key/unblock` if you're admin." ) config = valid_token.config if config != {}: model_list = config.get("model_list", []) new_model_list = model_list verbose_proxy_logger.debug( f"\n new llm router model list {new_model_list}" ) elif ( isinstance(valid_token.models, list) and "all-team-models" in valid_token.models ): # Do not do any validation at this step # the validation will occur when checking the team has access to this model pass else: model = get_model_from_request(request_data, route) fallback_models = cast( Optional[List[ALL_FALLBACK_MODEL_VALUES]], request_data.get("fallbacks", None), ) if model is not None: await can_key_call_model( model=model, llm_model_list=llm_model_list, valid_token=valid_token, llm_router=llm_router, ) if fallback_models is not None: for m in fallback_models: await can_key_call_model( model=m["model"] if isinstance(m, dict) else m, llm_model_list=llm_model_list, valid_token=valid_token, llm_router=llm_router, ) await is_valid_fallback_model( model=m["model"] if isinstance(m, dict) else m, llm_router=llm_router, user_model=None, ) # Check 2. If user_id for this token is in budget - done in common_checks() if valid_token.user_id is not None: try: user_obj = await get_user_object( user_id=valid_token.user_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, user_id_upsert=False, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) except Exception as e: verbose_logger.debug( "litellm.proxy.auth.user_api_key_auth.py::user_api_key_auth() - Unable to get user from db/cache. Setting user_obj to None. Exception received - {}".format( str(e) ) ) user_obj = None # Check 2a. Check if model has zero cost - if so, skip all budget checks model = get_model_from_request(request_data, route) skip_budget_checks = False if model is not None and llm_router is not None: from litellm.proxy.auth.auth_checks import _is_model_cost_zero skip_budget_checks = _is_model_cost_zero( model=model, llm_router=llm_router ) if skip_budget_checks: verbose_proxy_logger.info( f"Skipping all budget checks for zero-cost model: {model}" ) # Check 3. Check if user is in their team budget if not skip_budget_checks and valid_token.team_member_spend is not None: if prisma_client is not None: _cache_key = f"{valid_token.team_id}_{valid_token.user_id}" team_member_info = await user_api_key_cache.async_get_cache( key=_cache_key ) if team_member_info is None: # read from DB _user_id = valid_token.user_id _team_id = valid_token.team_id if _user_id is not None and _team_id is not None: team_member_info = await prisma_client.db.litellm_teammembership.find_first( where={ "user_id": _user_id, "team_id": _team_id, }, # type: ignore include={"litellm_budget_table": True}, ) await user_api_key_cache.async_set_cache( key=_cache_key, value=team_member_info, ttl=5, ) if ( team_member_info is not None and team_member_info.litellm_budget_table is not None ): team_member_budget = ( team_member_info.litellm_budget_table.max_budget ) if team_member_budget is not None and team_member_budget > 0: if valid_token.team_member_spend > team_member_budget: raise litellm.BudgetExceededError( current_cost=valid_token.team_member_spend, max_budget=team_member_budget, ) # Check 3. If token is expired if valid_token.expires is not None: current_time = datetime.now(timezone.utc) if isinstance(valid_token.expires, datetime): expiry_time = valid_token.expires else: expiry_time = datetime.fromisoformat(valid_token.expires) if ( expiry_time.tzinfo is None or expiry_time.tzinfo.utcoffset(expiry_time) is None ): expiry_time = expiry_time.replace(tzinfo=timezone.utc) verbose_proxy_logger.debug( f"Checking if token expired, expiry time {expiry_time} and current time {current_time}" ) if expiry_time < current_time: # Token exists but is expired. raise ProxyException( message=f"Authentication Error - Expired Key. Key Expiry time {expiry_time} and current time {current_time}", type=ProxyErrorTypes.expired_key, code=400, param=abbreviate_api_key(api_key=api_key), ) if not skip_budget_checks: # Check 4. Token Spend is under budget if RouteChecks.is_llm_api_route(route=route): await _virtual_key_max_budget_check( valid_token=valid_token, proxy_logging_obj=proxy_logging_obj, user_obj=user_obj, ) # Check 5. Max Budget Alert Check await _virtual_key_max_budget_alert_check( valid_token=valid_token, proxy_logging_obj=proxy_logging_obj, user_obj=user_obj, ) # Check 6. Soft Budget Check await _virtual_key_soft_budget_check( valid_token=valid_token, proxy_logging_obj=proxy_logging_obj, user_obj=user_obj, ) # Check 5. Token Model Spend is under Model budget max_budget_per_model = valid_token.model_max_budget current_model = request_data.get("model", None) if ( max_budget_per_model is not None and isinstance(max_budget_per_model, dict) and len(max_budget_per_model) > 0 and prisma_client is not None and current_model is not None and valid_token.token is not None ): ## GET THE SPEND FOR THIS MODEL await model_max_budget_limiter.is_key_within_model_budget( user_api_key_dict=valid_token, model=current_model, ) # Check 5b. End-user model max budget end_user_mmb = valid_token.end_user_model_max_budget if ( end_user_mmb is not None and isinstance(end_user_mmb, dict) and len(end_user_mmb) > 0 and current_model is not None and valid_token.end_user_id is not None ): await model_max_budget_limiter.is_end_user_within_model_budget( end_user_id=valid_token.end_user_id, end_user_model_max_budget=end_user_mmb, model=current_model, ) # Check 6: Additional Common Checks across jwt + key auth if valid_token.team_id is not None: try: _team_obj = await get_team_object( team_id=valid_token.team_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) except HTTPException: _team_obj = LiteLLM_TeamTableCachedObj( team_id=valid_token.team_id, max_budget=valid_token.team_max_budget, soft_budget=valid_token.team_soft_budget, spend=valid_token.team_spend, tpm_limit=valid_token.team_tpm_limit, rpm_limit=valid_token.team_rpm_limit, blocked=valid_token.team_blocked, models=valid_token.team_models, metadata=valid_token.team_metadata, object_permission_id=valid_token.team_object_permission_id, ) else: _team_obj = None user_api_key_cache.set_cache( key=valid_token.team_id, value=_team_obj ) # save team table in cache - used for tpm/rpm limiting - tpm_rpm_limiter.py # Fetch project object if key belongs to a project _project_obj = None if valid_token.project_id is not None: _project_obj = await get_project_object( project_id=valid_token.project_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) if _project_obj is not None: valid_token.project_metadata = _project_obj.metadata global_proxy_spend = None if ( litellm.max_budget > 0 and prisma_client is not None ): # user set proxy max budget cache_key = "{}:spend".format(litellm_proxy_admin_name) global_proxy_spend = await _fetch_global_spend_with_event_coordination( cache_key=cache_key, user_api_key_cache=user_api_key_cache, prisma_client=prisma_client, ) if global_proxy_spend is not None: call_info = CallInfo( token=valid_token.token, spend=global_proxy_spend, max_budget=litellm.max_budget, user_id=litellm_proxy_admin_name, team_id=valid_token.team_id, event_group=Litellm_EntityType.PROXY, ) asyncio.create_task( proxy_logging_obj.budget_alerts( type="proxy_budget", user_info=call_info, ) ) _ = await common_checks( request=request, request_body=request_data, team_object=_team_obj, user_object=user_obj, end_user_object=_end_user_object, general_settings=general_settings, global_proxy_spend=global_proxy_spend, route=route, llm_router=llm_router, proxy_logging_obj=proxy_logging_obj, valid_token=valid_token, skip_budget_checks=skip_budget_checks, project_object=_project_obj, ) # Token passed all checks if valid_token is None: raise HTTPException(401, detail="Invalid API key") if valid_token.token is None: raise HTTPException(401, detail="Invalid API key, no token associated") api_key = valid_token.token # Add hashed token to cache asyncio.create_task( _cache_key_object( hashed_token=api_key, user_api_key_obj=valid_token, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) ) valid_token_dict = valid_token.model_dump(exclude_none=True) valid_token_dict.pop("token", None) if _end_user_object is not None: valid_token_dict.update(end_user_params) valid_token_dict["end_user_object_permission"] = ( _end_user_object.object_permission ) # check if token is from litellm-ui, litellm ui makes keys to allow users to login with sso. These keys can only be used for LiteLLM UI functions # sso/login, ui/login, /key functions and /user functions # this will never be allowed to call /chat/completions if valid_token is None: # No token was found when looking up in the DB raise Exception("Invalid proxy server token passed") if valid_token_dict is not None: return await _return_user_api_key_auth_obj( user_obj=user_obj, api_key=api_key, parent_otel_span=parent_otel_span, valid_token_dict=valid_token_dict, route=route, start_time=start_time, ) except Exception as e: return await UserAPIKeyAuthExceptionHandler._handle_authentication_error( e=e, request=request, request_data=request_data, route=route, parent_otel_span=parent_otel_span, api_key=api_key, ) @tracer.wrap() async def user_api_key_auth( request: Request, api_key: str = fastapi.Security(api_key_header), azure_api_key_header: str = fastapi.Security(azure_api_key_header), anthropic_api_key_header: Optional[str] = fastapi.Security( anthropic_api_key_header ), google_ai_studio_api_key_header: Optional[str] = fastapi.Security( google_ai_studio_api_key_header ), azure_apim_header: Optional[str] = fastapi.Security(azure_apim_header), custom_litellm_key_header: Optional[str] = fastapi.Security( custom_litellm_key_header ), ) -> UserAPIKeyAuth: """ Parent function to authenticate user api key / jwt token. """ request_data = await _read_request_body(request=request) request_data = populate_request_with_path_params( request_data=request_data, request=request ) route: str = get_request_route(request=request) ## CHECK IF ROUTE IS ALLOWED user_api_key_auth_obj = await _user_api_key_auth_builder( request=request, api_key=api_key, azure_api_key_header=azure_api_key_header, anthropic_api_key_header=anthropic_api_key_header, google_ai_studio_api_key_header=google_ai_studio_api_key_header, azure_apim_header=azure_apim_header, request_data=request_data, custom_litellm_key_header=custom_litellm_key_header, ) ## ENSURE DISABLE ROUTE WORKS ACROSS ALL USER AUTH FLOWS ## RouteChecks.should_call_route(route=route, valid_token=user_api_key_auth_obj) end_user_id = get_end_user_id_from_request_body( request_data, _safe_get_request_headers(request) ) if end_user_id is not None: user_api_key_auth_obj.end_user_id = end_user_id user_api_key_auth_obj.request_route = normalize_request_route(route) return user_api_key_auth_obj async def _return_user_api_key_auth_obj( user_obj: Optional[LiteLLM_UserTable], api_key: str, parent_otel_span: Optional[Span], valid_token_dict: dict, route: str, start_time: datetime, user_role: Optional[LitellmUserRoles] = None, ) -> UserAPIKeyAuth: end_time = datetime.now() asyncio.create_task( user_api_key_service_logger_obj.async_service_success_hook( service=ServiceTypes.AUTH, call_type=route, start_time=start_time, end_time=end_time, duration=end_time.timestamp() - start_time.timestamp(), parent_otel_span=parent_otel_span, ) ) retrieved_user_role = ( user_role or _get_user_role(user_obj=user_obj) or LitellmUserRoles.INTERNAL_USER ) user_api_key_kwargs = { "api_key": api_key, "parent_otel_span": parent_otel_span, "user_role": retrieved_user_role, **valid_token_dict, } if user_obj is not None: user_api_key_kwargs.update( user_tpm_limit=user_obj.tpm_limit, user_rpm_limit=user_obj.rpm_limit, user_email=user_obj.user_email, user_spend=getattr(user_obj, "spend", None), user_max_budget=getattr(user_obj, "max_budget", None), ) if user_obj is not None and _is_user_proxy_admin(user_obj=user_obj): user_api_key_kwargs.update( user_role=LitellmUserRoles.PROXY_ADMIN, ) return UserAPIKeyAuth(**user_api_key_kwargs) else: return UserAPIKeyAuth(**user_api_key_kwargs) def get_api_key_from_custom_header( request: Request, custom_litellm_key_header_name: str ) -> str: """ Get API key from custom header Args: request (Request): Request object custom_litellm_key_header_name (str): Custom header name Returns: Optional[str]: API key """ api_key: str = "" # use this as the virtual key passed to litellm proxy custom_litellm_key_header_name = custom_litellm_key_header_name.lower() _headers = {k.lower(): v for k, v in request.headers.items()} verbose_proxy_logger.debug( "searching for custom_litellm_key_header_name= %s, in headers=%s", custom_litellm_key_header_name, _headers, ) custom_api_key = _headers.get(custom_litellm_key_header_name) if custom_api_key: api_key = _get_bearer_token(api_key=custom_api_key) verbose_proxy_logger.debug( "Found custom API key using header: {}, setting api_key={}".format( custom_litellm_key_header_name, abbreviate_api_key(api_key) ) ) else: verbose_proxy_logger.exception( f"No LiteLLM Virtual Key pass. Please set header={custom_litellm_key_header_name}: Bearer " ) return api_key def _get_temp_budget_increase(valid_token: UserAPIKeyAuth): valid_token_metadata = valid_token.metadata if ( "temp_budget_increase" in valid_token_metadata and "temp_budget_expiry" in valid_token_metadata ): expiry = datetime.fromisoformat(valid_token_metadata["temp_budget_expiry"]) if expiry > datetime.now(): return valid_token_metadata["temp_budget_increase"] return None def _update_key_budget_with_temp_budget_increase( valid_token: UserAPIKeyAuth, ) -> UserAPIKeyAuth: if valid_token.max_budget is None: return valid_token temp_budget_increase = _get_temp_budget_increase(valid_token) or 0.0 valid_token.max_budget = valid_token.max_budget + temp_budget_increase return valid_token async def _lookup_end_user_and_apply_budget( valid_token: UserAPIKeyAuth, route: str, parent_otel_span: Optional[Span], prisma_client, user_api_key_cache, proxy_logging_obj, ): """Look up end_user from DB and apply budget limits to valid_token.""" end_user_object = None try: end_user_object = await get_end_user_object( end_user_id=valid_token.end_user_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, route=route, ) if end_user_object is not None: end_user_params = { "end_user_id": valid_token.end_user_id, "allowed_model_region": end_user_object.allowed_model_region, } if end_user_object.litellm_budget_table is not None: _apply_budget_limits_to_end_user_params( end_user_params=end_user_params, budget_info=end_user_object.litellm_budget_table, end_user_id=valid_token.end_user_id or "", ) valid_token = update_valid_token_with_end_user_params( valid_token=valid_token, end_user_params=end_user_params ) elif litellm.max_end_user_budget_id is not None: from litellm.proxy.auth.auth_checks import \ get_default_end_user_budget default_budget = await get_default_end_user_budget( prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, ) if default_budget is not None: end_user_params = {"end_user_id": valid_token.end_user_id} _apply_budget_limits_to_end_user_params( end_user_params=end_user_params, budget_info=default_budget, end_user_id=valid_token.end_user_id or "", ) valid_token = update_valid_token_with_end_user_params( valid_token=valid_token, end_user_params=end_user_params ) except Exception as e: if isinstance(e, litellm.BudgetExceededError): raise e verbose_proxy_logger.debug(f"Unable to find user in db. Error - {str(e)}") return valid_token, end_user_object async def _run_post_custom_auth_checks( valid_token: UserAPIKeyAuth, request: Request, request_data: dict, route: str, parent_otel_span: Optional[Span], ) -> UserAPIKeyAuth: from litellm.proxy.proxy_server import (general_settings, llm_router, model_max_budget_limiter, prisma_client, proxy_logging_obj, user_api_key_cache) # 1. Look up end_user object from DB if end_user_id is set end_user_object = None if valid_token.end_user_id is not None: valid_token, end_user_object = await _lookup_end_user_and_apply_budget( valid_token=valid_token, route=route, parent_otel_span=parent_otel_span, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) # 2. Check token expiry if valid_token.expires is not None: current_time = datetime.now(timezone.utc) if isinstance(valid_token.expires, datetime): expiry_time = valid_token.expires else: expiry_time = datetime.fromisoformat(valid_token.expires) if ( expiry_time.tzinfo is None or expiry_time.tzinfo.utcoffset(expiry_time) is None ): expiry_time = expiry_time.replace(tzinfo=timezone.utc) if expiry_time < current_time: raise ProxyException( message=f"Authentication Error - Expired Key. Key Expiry time {expiry_time} and current time {current_time}", type=ProxyErrorTypes.expired_key, code=400, param=( abbreviate_api_key(api_key=valid_token.token) if valid_token.token else "" ), ) current_model = request_data.get("model", None) # 3. Check key-level model_max_budget max_budget_per_model = valid_token.model_max_budget if ( max_budget_per_model is not None and isinstance(max_budget_per_model, dict) and len(max_budget_per_model) > 0 and current_model is not None and valid_token.token is not None ): await model_max_budget_limiter.is_key_within_model_budget( user_api_key_dict=valid_token, model=current_model, ) # 4. Check end-user model_max_budget end_user_mmb = valid_token.end_user_model_max_budget if ( end_user_mmb is not None and isinstance(end_user_mmb, dict) and len(end_user_mmb) > 0 and current_model is not None and valid_token.end_user_id is not None ): await model_max_budget_limiter.is_end_user_within_model_budget( end_user_id=valid_token.end_user_id, end_user_model_max_budget=end_user_mmb, model=current_model, ) # 5. Look up user object if user_id is set user_object = None if valid_token.user_id is not None: try: user_object = await get_user_object( user_id=valid_token.user_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, user_id_upsert=False, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) except Exception: # If user_role is PROXY_ADMIN on the token, create a synthetic user object # so that admin route checks pass for custom auth if valid_token.user_role == LitellmUserRoles.PROXY_ADMIN: user_object = LiteLLM_UserTable( user_id=valid_token.user_id, user_role=LitellmUserRoles.PROXY_ADMIN, spend=0.0, ) # 6. Run common checks if valid_token.team_id is not None: try: _team_obj = await get_team_object( team_id=valid_token.team_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, parent_otel_span=parent_otel_span, proxy_logging_obj=proxy_logging_obj, ) except HTTPException: _team_obj = LiteLLM_TeamTableCachedObj( team_id=valid_token.team_id, max_budget=valid_token.team_max_budget, soft_budget=valid_token.team_soft_budget, spend=valid_token.team_spend, tpm_limit=valid_token.team_tpm_limit, rpm_limit=valid_token.team_rpm_limit, blocked=valid_token.team_blocked, models=valid_token.team_models, metadata=valid_token.team_metadata, object_permission_id=valid_token.team_object_permission_id, ) else: _team_obj = None _project_obj = None if valid_token.project_id is not None: _project_obj = await get_project_object( project_id=valid_token.project_id, prisma_client=prisma_client, user_api_key_cache=user_api_key_cache, proxy_logging_obj=proxy_logging_obj, ) if _project_obj is not None: valid_token.project_metadata = _project_obj.metadata if general_settings.get("custom_auth_run_common_checks", False): _ = await common_checks( request=request, request_body=request_data, team_object=_team_obj, user_object=user_object, end_user_object=end_user_object, general_settings=general_settings, global_proxy_spend=None, route=route, llm_router=llm_router, proxy_logging_obj=proxy_logging_obj, valid_token=valid_token, skip_budget_checks=False, project_object=_project_obj, ) return valid_token