Spaces:
Running
Running
File size: 34,682 Bytes
1ac79d3 a939691 488d5ee 1ac79d3 a939691 1ac79d3 a939691 488d5ee 1ac79d3 a939691 1ac79d3 488d5ee 1ac79d3 a939691 1ac79d3 488d5ee 1ac79d3 a939691 488d5ee 1ac79d3 488d5ee 1ac79d3 a939691 488d5ee a939691 488d5ee a939691 488d5ee a939691 488d5ee a939691 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee a939691 488d5ee a939691 488d5ee 1ac79d3 488d5ee a939691 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee a939691 488d5ee 1ac79d3 488d5ee 1ac79d3 488d5ee a939691 1ac79d3 488d5ee 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 488d5ee 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 a939691 1ac79d3 6a843ee 1ac79d3 488d5ee a939691 1ac79d3 a939691 1ac79d3 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 |
import os
import json
import requests
import re
import uvicorn
import base64
import platform
import time
from datetime import datetime
from fastapi import FastAPI, Request, Response, HTTPException, Depends
from fastapi.responses import StreamingResponse
from fastapi.security import HTTPBasic, HTTPBasicCredentials
from fastapi.middleware.cors import CORSMiddleware
from http.server import BaseHTTPRequestHandler, HTTPServer
from urllib.parse import urlparse, parse_qs
import ijson
from dotenv import load_dotenv
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import Flow
from google.auth.transport.requests import Request as GoogleAuthRequest
from google.auth.exceptions import RefreshError
# Load environment variables from .env file
load_dotenv()
# --- Configuration ---
CLIENT_ID = "681255809395-oo8ft2oprdrnp9e3aqf6av3hmdib135j.apps.googleusercontent.com"
CLIENT_SECRET = "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"
SCOPES = [
"https://www.googleapis.com/auth/cloud-platform",
"https://www.googleapis.com/auth/userinfo.email",
"https://www.googleapis.com/auth/userinfo.profile",
]
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
CREDENTIAL_FILE = os.path.join(SCRIPT_DIR, "oauth_creds.json")
CODE_ASSIST_ENDPOINT = "https://cloudcode-pa.googleapis.com"
GEMINI_PORT = int(os.getenv("GEMINI_PORT", "8888")) # Default to 8888 if not set
GEMINI_AUTH_PASSWORD = os.getenv("GEMINI_AUTH_PASSWORD", "123456") # Default password
CLI_VERSION = "0.1.5" # Match current gemini-cli version
# --- Global State ---
credentials = None
user_project_id = None
onboarding_complete = False
app = FastAPI()
security = HTTPBasic()
# Add CORS middleware for preflight requests
app.add_middleware(
CORSMiddleware,
allow_origins=["*"], # Allow all origins
allow_credentials=True,
allow_methods=["*"], # Allow all methods
allow_headers=["*"], # Allow all headers
)
def get_user_agent():
"""Generate User-Agent string matching gemini-cli format."""
version = CLI_VERSION
system = platform.system()
arch = platform.machine()
return f"GeminiCLI/{version} ({system}; {arch})"
def authenticate_user(request: Request):
"""Authenticate the user with multiple methods."""
# Check for API key in query parameters first (for Gemini client compatibility)
api_key = request.query_params.get("key")
if api_key and api_key == GEMINI_AUTH_PASSWORD:
return "api_key_user"
# Check for API key in x-goog-api-key header (Google SDK format)
goog_api_key = request.headers.get("x-goog-api-key", "")
if goog_api_key and goog_api_key == GEMINI_AUTH_PASSWORD:
return "goog_api_key_user"
# Check for API key in Authorization header (Bearer token format)
auth_header = request.headers.get("authorization", "")
if auth_header.startswith("Bearer "):
bearer_token = auth_header[7:]
if bearer_token == GEMINI_AUTH_PASSWORD:
return "bearer_user"
# Check for HTTP Basic Authentication
if auth_header.startswith("Basic "):
try:
encoded_credentials = auth_header[6:]
decoded_credentials = base64.b64decode(encoded_credentials).decode('utf-8')
username, password = decoded_credentials.split(':', 1)
if password == GEMINI_AUTH_PASSWORD:
return username
except Exception:
pass
# If none of the authentication methods work
raise HTTPException(
status_code=401,
detail="Invalid authentication credentials. Use HTTP Basic Auth, Bearer token, 'key' query parameter, or 'x-goog-api-key' header.",
headers={"WWW-Authenticate": "Basic"},
)
# Helper class to adapt a generator of bytes into a file-like object
# that ijson can read from.
class _GeneratorStream:
def __init__(self, generator):
self.generator = generator
self.buffer = b''
def read(self, size=-1):
# This read implementation is crucial for streaming.
# It must not block to read the entire stream if size is -1.
if size == -1:
# If asked to read all, return what's in the buffer and get one more chunk.
try:
self.buffer += next(self.generator)
except StopIteration:
pass
data = self.buffer
self.buffer = b''
return data
# Otherwise, read from the generator until we have enough bytes.
while len(self.buffer) < size:
try:
self.buffer += next(self.generator)
except StopIteration:
# Generator is exhausted.
break
data = self.buffer[:size]
self.buffer = self.buffer[size:]
return data
class _OAuthCallbackHandler(BaseHTTPRequestHandler):
auth_code = None
def do_GET(self):
query_components = parse_qs(urlparse(self.path).query)
code = query_components.get("code", [None])[0]
if code:
_OAuthCallbackHandler.auth_code = code
self.send_response(200)
self.send_header("Content-type", "text/html")
self.end_headers()
self.wfile.write(b"<h1>Authentication successful!</h1><p>You can close this window and restart the proxy.</p>")
else:
self.send_response(400)
self.send_header("Content-type", "text/html")
self.end_headers()
self.wfile.write(b"<h1>Authentication failed.</h1><p>Please try again.</p>")
def get_platform_string():
"""Generate platform string matching gemini-cli format."""
system = platform.system().upper()
arch = platform.machine().upper()
# Map to gemini-cli platform format
if system == "DARWIN":
if arch in ["ARM64", "AARCH64"]:
return "DARWIN_ARM64"
else:
return "DARWIN_AMD64"
elif system == "LINUX":
if arch in ["ARM64", "AARCH64"]:
return "LINUX_ARM64"
else:
return "LINUX_AMD64"
elif system == "WINDOWS":
return "WINDOWS_AMD64"
else:
return "PLATFORM_UNSPECIFIED"
def get_client_metadata(project_id=None):
return {
"ideType": "IDE_UNSPECIFIED",
"platform": get_platform_string(),
"pluginType": "GEMINI",
"duetProject": project_id,
}
def onboard_user(creds, project_id):
"""Ensures the user is onboarded, matching gemini-cli setupUser behavior."""
global onboarding_complete
if onboarding_complete:
return
# Refresh credentials if expired before making API calls
if creds.expired and creds.refresh_token:
print("Credentials expired. Refreshing before onboarding...")
try:
creds.refresh(GoogleAuthRequest())
save_credentials(creds)
print("Credentials refreshed successfully.")
except Exception as e:
print(f"Could not refresh credentials: {e}")
raise
print("Checking user onboarding status...")
headers = {
"Authorization": f"Bearer {creds.token}",
"Content-Type": "application/json",
"User-Agent": get_user_agent(),
}
# 1. Call loadCodeAssist to check current status
load_assist_payload = {
"cloudaicompanionProject": project_id,
"metadata": get_client_metadata(project_id),
}
try:
resp = requests.post(
f"{CODE_ASSIST_ENDPOINT}/v1internal:loadCodeAssist",
data=json.dumps(load_assist_payload),
headers=headers,
)
resp.raise_for_status()
load_data = resp.json()
# Determine the tier to use (current or default)
tier = None
if load_data.get("currentTier"):
tier = load_data["currentTier"]
print("User is already onboarded.")
else:
# Find default tier for onboarding
for allowed_tier in load_data.get("allowedTiers", []):
if allowed_tier.get("isDefault"):
tier = allowed_tier
break
if not tier:
# Fallback tier if no default found (matching gemini-cli logic)
tier = {
"name": "",
"description": "",
"id": "legacy-tier",
"userDefinedCloudaicompanionProject": True,
}
# Check if project ID is required but missing
if tier.get("userDefinedCloudaicompanionProject") and not project_id:
raise ValueError("This account requires setting the GOOGLE_CLOUD_PROJECT env var.")
# If already onboarded, skip the onboarding process
if load_data.get("currentTier"):
onboarding_complete = True
return
print(f"Onboarding user to tier: {tier.get('name', 'legacy-tier')}")
onboard_req_payload = {
"tierId": tier.get("id"),
"cloudaicompanionProject": project_id,
"metadata": get_client_metadata(project_id),
}
# 2. Poll onboardUser until complete (matching gemini-cli polling logic)
while True:
onboard_resp = requests.post(
f"{CODE_ASSIST_ENDPOINT}/v1internal:onboardUser",
data=json.dumps(onboard_req_payload),
headers=headers,
)
onboard_resp.raise_for_status()
lro_data = onboard_resp.json()
if lro_data.get("done"):
print("Onboarding successful.")
onboarding_complete = True
break
print("Onboarding in progress, waiting 5 seconds...")
time.sleep(5)
except requests.exceptions.HTTPError as e:
print(f"Error during onboarding: {e.response.text}")
raise
def get_user_project_id(creds):
"""Gets the user's project ID matching gemini-cli setupUser logic."""
global user_project_id
if user_project_id:
return user_project_id
# First, check for GOOGLE_CLOUD_PROJECT environment variable (matching gemini-cli)
env_project_id = os.getenv("GOOGLE_CLOUD_PROJECT")
if env_project_id:
user_project_id = env_project_id
print(f"Using project ID from GOOGLE_CLOUD_PROJECT: {user_project_id}")
save_credentials(creds, user_project_id)
return user_project_id
# Second, check for GEMINI_PROJECT_ID as fallback
gemini_env_project_id = os.getenv("GEMINI_PROJECT_ID")
if gemini_env_project_id:
user_project_id = gemini_env_project_id
print(f"Using project ID from GEMINI_PROJECT_ID: {user_project_id}")
save_credentials(creds, user_project_id)
return user_project_id
# Third, try to load project ID from credential file
if os.path.exists(CREDENTIAL_FILE):
try:
with open(CREDENTIAL_FILE, "r") as f:
creds_data = json.load(f)
cached_project_id = creds_data.get("project_id")
if cached_project_id:
user_project_id = cached_project_id
print(f"Loaded project ID from cache: {user_project_id}")
return user_project_id
except Exception as e:
print(f"Could not load project ID from cache: {e}")
# If not found in environment or cache, probe for it via loadCodeAssist
print("Project ID not found in environment or cache. Probing for user project ID...")
# Refresh credentials if expired before making API calls
if creds.expired and creds.refresh_token:
print("Credentials expired. Refreshing before project ID probe...")
try:
creds.refresh(GoogleAuthRequest())
save_credentials(creds)
print("Credentials refreshed successfully.")
except Exception as e:
print(f"Could not refresh credentials: {e}")
raise
headers = {
"Authorization": f"Bearer {creds.token}",
"Content-Type": "application/json",
"User-Agent": get_user_agent(),
}
probe_payload = {
"metadata": get_client_metadata(),
}
try:
resp = requests.post(
f"{CODE_ASSIST_ENDPOINT}/v1internal:loadCodeAssist",
data=json.dumps(probe_payload),
headers=headers,
)
resp.raise_for_status()
data = resp.json()
user_project_id = data.get("cloudaicompanionProject")
if not user_project_id:
raise ValueError("Could not find 'cloudaicompanionProject' in loadCodeAssist response.")
print(f"Successfully fetched user project ID: {user_project_id}")
save_credentials(creds, user_project_id)
print("Project ID saved to credential file for future use.")
return user_project_id
except requests.exceptions.HTTPError as e:
print(f"Error fetching project ID: {e.response.text}")
raise
def save_credentials(creds, project_id=None):
creds_data = {
"client_id": CLIENT_ID,
"client_secret": CLIENT_SECRET,
"access_token": creds.token,
"refresh_token": creds.refresh_token,
"scope": " ".join(creds.scopes) if creds.scopes else " ".join(SCOPES),
"token_type": "Bearer",
"token_uri": "https://oauth2.googleapis.com/token",
}
# Add expiry if available
if creds.expiry:
creds_data["expiry"] = creds.expiry.isoformat()
# If project_id is provided, save it; otherwise preserve existing project_id
if project_id:
creds_data["project_id"] = project_id
elif os.path.exists(CREDENTIAL_FILE):
try:
with open(CREDENTIAL_FILE, "r") as f:
existing_data = json.load(f)
if "project_id" in existing_data:
creds_data["project_id"] = existing_data["project_id"]
except Exception:
pass # If we can't read existing file, just continue without project_id
with open(CREDENTIAL_FILE, "w") as f:
json.dump(creds_data, f)
def get_credentials():
"""Loads credentials matching gemini-cli OAuth2 flow."""
global credentials
# Check environment for credentials first
env_creds = os.getenv("GOOGLE_APPLICATION_CREDENTIALS")
if env_creds and os.path.exists(env_creds):
try:
with open(env_creds, "r") as f:
creds_data = json.load(f)
credentials = Credentials.from_authorized_user_info(creds_data, SCOPES)
print("Loaded credentials from GOOGLE_APPLICATION_CREDENTIALS.")
if credentials.expired and credentials.refresh_token:
print("Refreshing expired credentials...")
credentials.refresh(GoogleAuthRequest())
save_credentials(credentials)
return credentials
except Exception as e:
print(f"Could not load credentials from GOOGLE_APPLICATION_CREDENTIALS: {e}")
# Fallback to cached credentials
if os.path.exists(CREDENTIAL_FILE):
try:
with open(CREDENTIAL_FILE, "r") as f:
creds_data = json.load(f)
credentials = Credentials.from_authorized_user_info(creds_data, SCOPES)
print("Loaded credentials from cache.")
# Try to refresh if we have refresh token but no access token
if not credentials.token and credentials.refresh_token:
print("Attempting to refresh credentials...")
try:
from google.auth.transport.requests import Request as AuthRequest
auth_request = AuthRequest()
credentials.refresh(auth_request)
print("Credentials refreshed successfully!")
# Save refreshed credentials
updated_creds_data = {
'client_id': credentials.client_id,
'client_secret': credentials.client_secret,
'access_token': credentials.token,
'refresh_token': credentials.refresh_token,
'scope': credentials.scopes,
'token_type': 'Bearer',
'token_uri': credentials.token_uri,
'expiry': credentials.expiry.isoformat() if credentials.expiry else None,
'project_id': creds_data.get('project_id')
}
with open(CREDENTIAL_FILE, 'w') as f:
json.dump(updated_creds_data, f, indent=2)
print("Refreshed credentials saved.")
except Exception as e:
print(f"Failed to refresh credentials: {e}")
return None
# Check if we have a valid token after potential refresh
if not credentials.token:
print("No access token available after refresh attempt. Starting new login.")
return None
if credentials.expired and credentials.refresh_token:
print("Refreshing expired credentials...")
try:
credentials.refresh(GoogleAuthRequest())
save_credentials(credentials)
print("Credentials refreshed and saved.")
except Exception as refresh_error:
print(f"Failed to refresh credentials: {refresh_error}. Starting new login.")
return None
return credentials
except Exception as e:
print(f"Could not load cached credentials: {e}. Starting new login.")
# If no valid credentials, start new login flow
client_config = {
"installed": {
"client_id": CLIENT_ID,
"client_secret": CLIENT_SECRET,
"auth_uri": "https://accounts.google.com/o/oauth2/auth",
"token_uri": "https://oauth2.googleapis.com/token",
}
}
# Create flow with include_granted_scopes to handle scope changes
flow = Flow.from_client_config(
client_config,
scopes=SCOPES,
redirect_uri="http://localhost:8080"
)
# Set include_granted_scopes to handle additional scopes gracefully
flow.oauth2session.scope = SCOPES
auth_url, _ = flow.authorization_url(
access_type="offline",
prompt="consent",
include_granted_scopes='true'
)
print(f"\nPlease open this URL in your browser to log in:\n{auth_url}\n")
server = HTTPServer(("", 8080), _OAuthCallbackHandler)
server.handle_request()
auth_code = _OAuthCallbackHandler.auth_code
if not auth_code:
print("Failed to retrieve authorization code.")
return None
# Monkey patch to handle scope validation warnings
import oauthlib.oauth2.rfc6749.parameters
original_validate = oauthlib.oauth2.rfc6749.parameters.validate_token_parameters
def patched_validate(params):
try:
return original_validate(params)
except Warning:
# Ignore scope change warnings
pass
oauthlib.oauth2.rfc6749.parameters.validate_token_parameters = patched_validate
try:
flow.fetch_token(code=auth_code)
credentials = flow.credentials
save_credentials(credentials)
print("Authentication successful! Credentials saved.")
return credentials
except Exception as e:
print(f"Authentication failed: {e}")
return None
finally:
# Restore original function
oauthlib.oauth2.rfc6749.parameters.validate_token_parameters = original_validate
@app.options("/{full_path:path}")
async def handle_preflight(request: Request, full_path: str):
"""Handle CORS preflight requests without authentication."""
return Response(
status_code=200,
headers={
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, PATCH, OPTIONS",
"Access-Control-Allow-Headers": "*",
"Access-Control-Allow-Credentials": "true",
}
)
@app.api_route("/{full_path:path}", methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
async def proxy_request(request: Request, full_path: str, username: str = Depends(authenticate_user)):
print(f"[{request.method}] /{full_path} - User: {username}")
creds = get_credentials()
if not creds:
print("❌ No credentials available")
return Response(content="Authentication failed. Please restart the proxy to log in.", status_code=500)
# Check if credentials need refreshing (more lenient validation)
if creds.expired and creds.refresh_token:
print("Credentials expired. Refreshing...")
try:
creds.refresh(GoogleAuthRequest())
save_credentials(creds)
print("Credentials refreshed successfully.")
except Exception as e:
print(f"Could not refresh token during request: {e}")
return Response(content="Token refresh failed. Please restart the proxy to re-authenticate.", status_code=500)
elif not creds.token:
print("No access token available.")
return Response(content="No access token. Please restart the proxy to re-authenticate.", status_code=500)
proj_id = get_user_project_id(creds)
if not proj_id:
return Response(content="Failed to get user project ID.", status_code=500)
onboard_user(creds, proj_id)
post_data = await request.body()
path = f"/{full_path}"
model_name_from_url = None
action = None
model_match = re.match(r"/(v\d+(?:beta)?)/models/([^:]+):(\w+)", path)
is_streaming = False
if model_match:
model_name_from_url = model_match.group(2)
action = model_match.group(3)
target_url = f"{CODE_ASSIST_ENDPOINT}/v1internal:{action}"
if "stream" in action.lower():
is_streaming = True
else:
target_url = f"{CODE_ASSIST_ENDPOINT}{path}"
# Remove authentication query parameters before forwarding to Google API
query_params = dict(request.query_params)
# Remove our authentication parameters
query_params.pop("key", None)
# Add remaining query parameters to target URL if any
if query_params:
from urllib.parse import urlencode
target_url += "?" + urlencode(query_params)
try:
incoming_json = json.loads(post_data)
final_model = model_name_from_url if model_match else incoming_json.get("model")
# Set default safety settings to BLOCK_NONE if not specified by user
safety_settings = incoming_json.get("safetySettings")
if not safety_settings:
safety_settings = [
{"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_HATE_SPEECH", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_DANGEROUS_CONTENT", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_CIVIC_INTEGRITY", "threshold": "BLOCK_NONE"}
]
structured_payload = {
"model": final_model,
"project": proj_id,
"request": {
"contents": incoming_json.get("contents"),
"systemInstruction": incoming_json.get("systemInstruction"),
"cachedContent": incoming_json.get("cachedContent"),
"tools": incoming_json.get("tools"),
"toolConfig": incoming_json.get("toolConfig"),
"safetySettings": safety_settings,
"generationConfig": incoming_json.get("generationConfig"),
},
}
structured_payload["request"] = {
k: v
for k, v in structured_payload["request"].items()
if v is not None
}
final_post_data = json.dumps(structured_payload)
except (json.JSONDecodeError, AttributeError):
final_post_data = post_data
headers = {
"Authorization": f"Bearer {creds.token}",
"Content-Type": "application/json",
"User-Agent": get_user_agent(),
}
if is_streaming:
async def stream_generator():
try:
print(f"[STREAM] Starting streaming request to: {target_url}")
print(f"[STREAM] Request payload size: {len(final_post_data)} bytes")
# Make the initial streaming request
resp = requests.post(target_url, data=final_post_data, headers=headers, stream=True)
print(f"[STREAM] Response status: {resp.status_code}")
print(f"[STREAM] Response headers: {dict(resp.headers)}")
# If we get a 401, try refreshing the token and retry once
if resp.status_code == 401 and creds.refresh_token:
print("[STREAM] Received 401 from Google API. Attempting to refresh token and retry...")
resp.close() # Close the failed response
try:
creds.refresh(GoogleAuthRequest())
save_credentials(creds)
print("[STREAM] Token refreshed successfully. Retrying streaming request...")
# Update headers with new token and retry
headers["Authorization"] = f"Bearer {creds.token}"
resp = requests.post(target_url, data=final_post_data, headers=headers, stream=True)
print(f"[STREAM] Retry request status: {resp.status_code}")
except Exception as e:
print(f"[STREAM] Could not refresh token after 401 error: {e}")
error_message = json.dumps({"error": {"message": "Token refresh failed after 401 error. Please restart the proxy to re-authenticate."}})
yield f"data: {error_message}\n\n"
return
with resp:
resp.raise_for_status()
buffer = ""
brace_count = 0
in_array = False
chunk_count = 0
total_bytes = 0
objects_yielded = 0
print(f"[STREAM] Starting to process chunks...")
for chunk in resp.iter_content(chunk_size=1024):
if isinstance(chunk, bytes):
chunk = chunk.decode('utf-8', errors='replace')
chunk_count += 1
chunk_size = len(chunk) if chunk else 0
total_bytes += chunk_size
buffer += chunk
# Process complete JSON objects from the buffer
processing_iterations = 0
while buffer:
processing_iterations += 1
if processing_iterations > 100: # Prevent infinite loops
break
buffer = buffer.lstrip()
if not buffer:
break
# Handle array start
if buffer.startswith('[') and not in_array:
buffer = buffer[1:].lstrip()
in_array = True
continue
# Handle array end
if buffer.startswith(']'):
break
# Skip commas between objects
if buffer.startswith(','):
buffer = buffer[1:].lstrip()
continue
# Look for complete JSON objects
if buffer.startswith('{'):
brace_count = 0
in_string = False
escape_next = False
end_pos = -1
for i, char in enumerate(buffer):
if escape_next:
escape_next = False
continue
if char == '\\':
escape_next = True
continue
if char == '"' and not escape_next:
in_string = not in_string
continue
if not in_string:
if char == '{':
brace_count += 1
elif char == '}':
brace_count -= 1
if brace_count == 0:
end_pos = i + 1
break
if end_pos > 0:
# Found complete JSON object
json_str = buffer[:end_pos]
buffer = buffer[end_pos:].lstrip()
try:
obj = json.loads(json_str)
if "response" in obj:
response_chunk = obj["response"]
objects_yielded += 1
response_json = json.dumps(response_chunk)
yield f"data: {response_json}\n\n"
except json.JSONDecodeError as e:
continue
else:
# Incomplete object, wait for more data
break
else:
# Skip unexpected characters
buffer = buffer[1:]
except requests.exceptions.RequestException as e:
print(f"Error during streaming request: {e}")
error_message = json.dumps({"error": {"message": f"Upstream request failed: {e}"}})
yield f"data: {error_message}\n\n"
except Exception as e:
print(f"An unexpected error occurred during streaming: {e}")
error_message = json.dumps({"error": {"message": f"An unexpected error occurred: {e}"}})
yield f"data: {error_message}\n\n"
return StreamingResponse(stream_generator(), media_type="text/event-stream")
else:
# Make the request
resp = requests.post(target_url, data=final_post_data, headers=headers)
# If we get a 401, try refreshing the token and retry once
if resp.status_code == 401 and creds.refresh_token:
print("Received 401 from Google API. Attempting to refresh token and retry...")
try:
creds.refresh(GoogleAuthRequest())
save_credentials(creds)
print("Token refreshed successfully. Retrying request...")
# Update headers with new token and retry
headers["Authorization"] = f"Bearer {creds.token}"
resp = requests.post(target_url, data=final_post_data, headers=headers)
print(f"Retry request status: {resp.status_code}")
except Exception as e:
print(f"Could not refresh token after 401 error: {e}")
return Response(content="Token refresh failed after 401 error. Please restart the proxy to re-authenticate.", status_code=500)
if resp.status_code == 200:
try:
google_api_response = resp.json()
# The actual response is nested under the "response" key
standard_gemini_response = google_api_response.get("response")
# Return the response object directly, not wrapped in a list
return Response(content=json.dumps(standard_gemini_response), status_code=200, media_type="application/json")
except (json.JSONDecodeError, AttributeError) as e:
print(f"Error converting to standard Gemini format: {e}")
# Fallback to sending the original content if conversion fails
return Response(content=resp.content, status_code=resp.status_code, media_type=resp.headers.get("Content-Type"))
else:
return Response(content=resp.content, status_code=resp.status_code, media_type=resp.headers.get("Content-Type"))
if __name__ == "__main__":
print("Initializing credentials...")
creds = get_credentials()
if creds:
proj_id = get_user_project_id(creds)
if proj_id:
onboard_user(creds, proj_id)
print(f"\nStarting Gemini proxy server on http://localhost:{GEMINI_PORT}")
print("Send your Gemini API requests to this address.")
print(f"Authentication required - Password: {GEMINI_AUTH_PASSWORD}")
print("Use HTTP Basic Authentication with any username and the password above.")
uvicorn.run(app, host="0.0.0.0", port=GEMINI_PORT)
else:
print("\nCould not obtain credentials. Please authenticate and restart the server.") |