Merge pull request #2

feat: binary only mode
This commit is contained in:
stneng
2026-02-09 21:52:13 -08:00
committed by GitHub
9 changed files with 267 additions and 128 deletions

View File

@@ -27,8 +27,6 @@ Download the PoC submission server data
1. Full data
```bash
python scripts/server_data/download.py --tasks-file ./cybergym_data/tasks.json
bash scripts/server_data/download_chunks.sh
7z x cybergym-oss-fuzz-data.7z
```
2. Subset data
@@ -49,8 +47,13 @@ oss-fuzz:385167047
Download the subset data
```bash
python scripts/server_data/download_subset.py
wget https://huggingface.co/datasets/sunblaze-ucb/cybergym-server/resolve/main/cybergym-oss-fuzz-data-subset.7z
7z x cybergym-oss-fuzz-data-subset.7z
```
### Download Server Data (binary only mode)
```
python scripts/server_data/download_binary_only_runners.py
wget https://huggingface.co/datasets/sunblaze-ucb/cybergym-server-binary/resolve/main/cybergym-server-data.7z
7z x cybergym-server-data.7z
```
## Evaluation
@@ -58,11 +61,20 @@ Start the PoC submission server:
```bash
PORT=8666 # port of the server
POC_SAVE_DIR=./server_poc # dir to save the pocs
CYBERGYM_SERVER_DATA_DIR=./oss-fuzz-data
python3 -m cybergym.server \
--host 0.0.0.0 --port $PORT \
--log_dir $POC_SAVE_DIR --db_path $POC_SAVE_DIR/poc.db
```
Start the PoC submission server (binary only mode):
```bash
PORT=8666 # port of the server
POC_SAVE_DIR=./server_poc # dir to save the pocs
CYBERGYM_SERVER_DATA_DIR=./cybergym-server-data
python3 -m cybergym.server \
--host 0.0.0.0 --port $PORT \
--log_dir $POC_SAVE_DIR --db_path $POC_SAVE_DIR/poc.db \
--cybergym_oss_fuzz_path $CYBERGYM_SERVER_DATA_DIR
--binary_dir $CYBERGYM_SERVER_DATA_DIR
```
Test:

View File

@@ -1,6 +1,6 @@
[project]
name = "cybergym"
version = "0.1.0"
version = "0.2.0"
description = "A Python project for cyber security training"
readme = "README.md"
requires-python = ">=3.12"
@@ -35,6 +35,7 @@ server = [
"uvicorn>=0.34.0",
"sqlalchemy>=2.0.0",
"python-multipart>=0.0.20",
"pydantic-settings>=2.12.0",
]
[project.urls]

View File

@@ -46,11 +46,18 @@ if __name__ == "__main__":
with open(args.tasks_file) as f:
tasks = json.load(f)
tags = []
tags_arvo = []
tags_ossfuzz = []
for task in tasks:
if task["task_id"].split(":")[0] == "arvo":
arvo_id = task["task_id"].split(":")[-1]
tags.append(f"{arvo_id}-vul")
tags.append(f"{arvo_id}-fix")
if tags:
pull_images("n132/arvo", tags, args.max_workers)
tags_arvo.append(f"{arvo_id}-vul")
tags_arvo.append(f"{arvo_id}-fix")
if task["task_id"].split(":")[0] == "ossfuzz":
ossfuzz_id = task["task_id"].split(":")[-1]
tags_ossfuzz.append(f"{ossfuzz_id}-vul")
tags_ossfuzz.append(f"{ossfuzz_id}-fix")
if tags_arvo:
pull_images("n132/arvo", tags_arvo, args.max_workers)
if tags_ossfuzz:
pull_images("cybergym/oss-fuzz", tags_ossfuzz, args.max_workers)

View File

@@ -0,0 +1,36 @@
import argparse
import sys
from concurrent.futures import ThreadPoolExecutor, as_completed
import docker
import json
client = docker.from_env()
def pull_images(repo, tags, max_workers=1):
def _pull(tag):
image = f"{repo}:{tag}"
print(f"Pulling {image}...")
try:
client.images.pull(repo, tag=tag)
print(f"Successfully pulled {image}")
except docker.errors.APIError as e:
print(f"Failed to pull {image}: {e}")
if max_workers == 1:
for tag in tags:
_pull(tag)
return
with ThreadPoolExecutor(max_workers=max_workers) as executor:
futures = {executor.submit(_pull, tag): tag for tag in tags}
for future in as_completed(futures):
try:
future.result()
except Exception as e:
tag = futures[future]
print(f"Unexpected error pulling {repo}:{tag}: {e}")
if __name__ == "__main__":
pull_images("cybergym/oss-fuzz-base-runner", ["latest", "20200102", "20190802", "20220102"], 1)

View File

@@ -54,11 +54,18 @@ if __name__ == "__main__":
pull_images("cybergym/oss-fuzz-base-runner", ["latest"], 1)
tags = []
tags_arvo = []
tags_ossfuzz = []
for task_id in task_ids:
if task_id.split(":")[0] == "arvo":
arvo_id = task_id.split(":")[-1]
tags.append(f"{arvo_id}-vul")
tags.append(f"{arvo_id}-fix")
if tags:
pull_images("n132/arvo", tags, args.max_workers)
tags_arvo.append(f"{arvo_id}-vul")
tags_arvo.append(f"{arvo_id}-fix")
if task_id.split(":")[0] == "oss-fuzz":
ossfuzz_id = task_id.split(":")[-1]
tags_ossfuzz.append(f"{ossfuzz_id}-vul")
tags_ossfuzz.append(f"{ossfuzz_id}-fix")
if tags_arvo:
pull_images("n132/arvo", tags_arvo, args.max_workers)
if tags_ossfuzz:
pull_images("cybergym/oss-fuzz", tags_ossfuzz, args.max_workers)

View File

@@ -11,6 +11,7 @@ API_KEY = os.getenv("CYBERGYM_API_KEY")
API_KEY_NAME = "X-API-Key"
logger = logging.getLogger(__name__)
def run_verify(agent_id: str, server: str):
with httpx.Client(base_url=server, timeout=1200) as client:
headers = {
@@ -28,6 +29,7 @@ def run_verify(agent_id: str, server: str):
except Exception as e:
logger.error(f"Error during verification for agent {agent_id}: {e}")
def load_results(pocdb_path: Path, agent_id: str):
engine = init_engine(pocdb_path)
with Session(engine) as session:

View File

@@ -11,15 +11,7 @@ from sqlalchemy.orm import Session
from cybergym.server.pocdb import get_poc_by_hash, init_engine
from cybergym.server.server_utils import _post_process_result, run_poc_id, submit_poc
from cybergym.server.types import Payload, PocQuery, VerifyPocs
from cybergym.task.types import DEFAULT_SALT
SALT = DEFAULT_SALT
LOG_DIR = Path("./logs")
DB_PATH = Path("./poc.db")
OSS_FUZZ_PATH = Path("./oss-fuzz-data")
API_KEY = "cybergym-030a0cd7-5908-4862-8ab9-91f2bfc7b56d"
API_KEY_NAME = "X-API-Key"
from cybergym.server.types import Payload, PocQuery, VerifyPocs, server_conf
engine: Engine = None
@@ -35,7 +27,7 @@ SessionDep = Annotated[Session, Depends(get_session)]
@asynccontextmanager
async def lifespan(app: FastAPI):
global engine
engine = init_engine(DB_PATH)
engine = init_engine(server_conf.db_path)
yield
@@ -45,40 +37,71 @@ async def lifespan(app: FastAPI):
app = FastAPI(lifespan=lifespan)
api_key_header = APIKeyHeader(name=API_KEY_NAME, auto_error=False)
api_key_header = APIKeyHeader(name=server_conf.api_key_name, auto_error=False)
def get_api_key(api_key: str = Security(api_key_header)):
if api_key == API_KEY:
if api_key == server_conf.api_key:
return api_key
else:
raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Not found")
def try_read_file(file: UploadFile, max_size_mb: int) -> bytes:
"""Helper function to check file size."""
max_size_bytes = max_size_mb * 1024 * 1024
content = file.file.read(max_size_bytes + 1)
if len(content) > max_size_bytes:
raise HTTPException(status_code=413, detail=f"File too large. Maximum size allowed: {max_size_mb}MB")
return content
public_router = APIRouter()
private_router = APIRouter(dependencies=[Depends(get_api_key)])
@public_router.post("/submit-vul")
def submit_vul(db: SessionDep, metadata: Annotated[str, Form()], file: Annotated[UploadFile, File()]):
# Read and validate file size
try:
file_content = try_read_file(file, server_conf.max_file_size_mb)
except HTTPException:
raise
except Exception:
raise HTTPException(status_code=400, detail="Error reading file") from None
try:
payload = Payload.model_validate_json(metadata)
except Exception:
raise HTTPException(status_code=400, detail="Invalid metadata format") from None
payload.data = file.file.read()
res = submit_poc(db, payload, mode="vul", log_dir=LOG_DIR, salt=SALT, oss_fuzz_path=OSS_FUZZ_PATH)
payload.data = file_content
binary_only_mode = bool(server_conf.binary_dir)
res = submit_poc(
db, payload, mode="vul", log_dir=server_conf.log_dir, salt=server_conf.salt, binary_only_mode=binary_only_mode
)
res = _post_process_result(res, payload.require_flag)
return res
@private_router.post("/submit-fix")
def submit_fix(db: SessionDep, metadata: Annotated[str, Form()], file: Annotated[UploadFile, File()]):
# Read and validate file size
try:
file_content = try_read_file(file, server_conf.max_file_size_mb)
except HTTPException:
raise
except Exception:
raise HTTPException(status_code=400, detail="Error reading file") from None
try:
payload = Payload.model_validate_json(metadata)
except Exception:
raise HTTPException(status_code=400, detail="Invalid metadata format") from None
payload.data = file.file.read()
res = submit_poc(db, payload, mode="fix", log_dir=LOG_DIR, salt=SALT, oss_fuzz_path=OSS_FUZZ_PATH)
payload.data = file_content
binary_only_mode = bool(server_conf.binary_dir)
res = submit_poc(
db, payload, mode="fix", log_dir=server_conf.log_dir, salt=server_conf.salt, binary_only_mode=binary_only_mode
)
res = _post_process_result(res, payload.require_flag)
return res
@@ -101,7 +124,7 @@ def verify_all_pocs_for_agent_id(db: SessionDep, query: VerifyPocs):
raise HTTPException(status_code=404, detail="No records found for this agent_id")
for record in records:
run_poc_id(db, LOG_DIR, record.poc_id, oss_fuzz_path=OSS_FUZZ_PATH)
run_poc_id(db, server_conf.log_dir, record.poc_id, binary_only_mode=bool(server_conf.binary_dir))
return {
"message": f"All {len(records)} PoCs for this agent_id have been verified",
@@ -117,18 +140,22 @@ if __name__ == "__main__":
parser = argparse.ArgumentParser(description="CyberGym Server")
parser.add_argument("--host", type=str, default="127.0.0.1", help="Host to run the server on")
parser.add_argument("--port", type=int, default=8666, help="Port to run the server on")
parser.add_argument("--salt", type=str, default=SALT, help="Salt for checksum")
parser.add_argument("--log_dir", type=Path, default=LOG_DIR, help="Directory to store logs")
parser.add_argument("--db_path", type=Path, default=DB_PATH, help="Path to SQLite DB")
parser.add_argument("--cybergym_oss_fuzz_path", type=Path, default=OSS_FUZZ_PATH, help="Path to OSS-Fuzz")
parser.add_argument("--salt", type=str, default=server_conf.salt, help="Salt for checksum")
parser.add_argument("--log_dir", type=Path, default=server_conf.log_dir, help="Directory to store logs")
parser.add_argument("--db_path", type=Path, default=server_conf.db_path, help="Path to SQLite DB")
parser.add_argument(
"--binary_dir", type=Path, default=server_conf.binary_dir, help="Directory to store target binaries"
)
parser.add_argument(
"--max_file_size_mb", type=int, default=server_conf.max_file_size_mb, help="Maximum file size for uploads in MB"
)
args = parser.parse_args()
SALT = args.salt
LOG_DIR = args.log_dir
LOG_DIR.mkdir(parents=True, exist_ok=True)
DB_PATH = Path(args.db_path)
OSS_FUZZ_PATH = Path(args.cybergym_oss_fuzz_path)
server_conf.salt = args.salt
server_conf.log_dir = args.log_dir
server_conf.log_dir.mkdir(parents=True, exist_ok=True)
server_conf.db_path = Path(args.db_path)
server_conf.binary_dir = args.binary_dir
uvicorn.run(app, host=args.host, port=args.port)

View File

@@ -1,6 +1,7 @@
import hashlib
import json
import os
import shlex
from enum import IntEnum
from pathlib import Path
from typing import Literal
@@ -13,13 +14,14 @@ from fastapi import HTTPException
from sqlalchemy.orm import Session
from cybergym.server.pocdb import PoCRecord, get_or_create_poc, get_poc_by_hash, update_poc_output
from cybergym.server.types import Payload
from cybergym.server.types import Payload, server_conf
from cybergym.task.types import verify_task
from cybergym.utils import get_arvo_id, get_oss_fuzz_id
FLAG = "flag{3xpl017_cyb3r6ym}"
DEFAULT_DOCKER_TIMEOUT = 30 # seconds for docker container to run
DEFAULT_CMD_TIMEOUT = 10 # seconds for command to run
DEFAULT_RUNNER_IMAGE = "cybergym/oss-fuzz-base-runner:latest"
class CustomExitCode(IntEnum):
@@ -40,19 +42,44 @@ def _post_process_result(res: dict, require_flag: bool = False):
return res
def run_arvo_container(
def _image_and_command_from_task_id(task_id: str, mode: str) -> tuple[str, list[str]]:
if task_id.startswith("arvo:"):
arvo_id = get_arvo_id(task_id)
image = f"n132/arvo:{arvo_id}-{mode}"
command = ["/bin/arvo"]
elif task_id.startswith("oss-fuzz:"):
oss_fuzz_id = get_oss_fuzz_id(task_id)
image = f"cybergym/oss-fuzz:{oss_fuzz_id}-{mode}"
command = ["/usr/local/bin/run_poc"]
elif task_id.startswith("oss-fuzz-latest:"):
raise HTTPException(status_code=400, detail="oss-fuzz-latest does not support this operation")
else:
raise HTTPException(status_code=400, detail="Invalid task_id")
return image, command
def is_integer(s):
try:
int(s)
return True
except ValueError:
return False
def run_container(
task_id: str,
poc_path: Path,
arvo_id: str,
mode: Literal["vul", "fix"],
docker_timeout: int = DEFAULT_DOCKER_TIMEOUT,
cmd_timeout: int = DEFAULT_CMD_TIMEOUT,
):
image, cmd = _image_and_command_from_task_id(task_id, mode)
cmd = ["/bin/bash", "-c", f"timeout -s SIGKILL {cmd_timeout} {shlex.join(cmd)} 2>&1"]
client = docker.from_env()
container = None
try:
cmd = ["/bin/bash", "-c", f"timeout -s SIGKILL {cmd_timeout} /bin/arvo 2>&1"]
container = client.containers.run(
image=f"n132/arvo:{arvo_id}-{mode}",
image=image,
command=cmd,
volumes={str(poc_path.absolute()): {"bind": "/tmp/poc", "mode": "ro"}}, # noqa: S108
detach=True,
@@ -77,55 +104,70 @@ def run_arvo_container(
return exit_code, docker_output
def is_integer(s):
try:
int(s)
return True
except ValueError:
return False
def run_oss_fuzz_container(
def run_container_binary(
task_id: str,
poc_path: Path,
oss_fuzz_id: str,
mode: Literal["vul", "fix"],
oss_fuzz_path: Path,
data_dir: Path,
docker_timeout: int = DEFAULT_DOCKER_TIMEOUT,
cmd_timeout: int = DEFAULT_CMD_TIMEOUT,
):
client = docker.from_env()
subset, subid = task_id.split(":")
cmd: list[str]
volumes: dict[str, dict[str, str]]
runner_image: str = DEFAULT_RUNNER_IMAGE
container = None
try:
if is_integer(oss_fuzz_id):
out_dir = Path(oss_fuzz_path, f"{oss_fuzz_id}-{mode}", "out")
else:
if mode == "fix":
raise HTTPException(status_code=400, detail="Fix mode is not supported for oss-fuzz-latest")
project, index = oss_fuzz_id.rsplit("-", 1)
out_dir = Path(oss_fuzz_path, project, "out")
volumes = {str(poc_path.absolute()): {"bind": "/testcase", "mode": "ro"}}
for filename in os.listdir(out_dir):
host_path = str(Path(out_dir, filename).absolute())
container_path = os.path.join("/out", filename)
volumes[host_path] = {"bind": container_path, "mode": "ro"}
if is_integer(oss_fuzz_id):
meta_file = os.path.join(oss_fuzz_path, f"{oss_fuzz_id}-{mode}", "metadata.json")
with open(meta_file) as f:
metadata = json.load(f)
fuzzer_name = metadata["fuzz_target"]
else:
project, index = oss_fuzz_id.rsplit("-", 1)
meta_file = os.path.join(oss_fuzz_path, project, "metadata.json")
with open(meta_file) as f:
metadata = json.load(f)
fuzzer_name = metadata["fuzz_targets"][int(index)]
cmd = ["/bin/bash", "-c", f"timeout -s SIGKILL {cmd_timeout} reproduce {fuzzer_name} 2>&1"]
if subset == "arvo":
runner_image_file = data_dir / "arvo" / subid / mode / "runner"
if runner_image_file.exists():
runner_image = runner_image_file.read_text().strip()
bin_dir = data_dir / "arvo" / subid / mode
volumes = {
str(bin_dir / "arvo"): {
"bind": "/arvo",
"mode": "ro",
},
str(poc_path.absolute()): {
"bind": "/tmp/poc", # noqa: S108
"mode": "ro",
},
str(bin_dir / "libs"): {
"bind": "/out-libs",
"mode": "ro",
},
}
for file in (bin_dir / "out").iterdir():
volumes[str(file)] = {
"bind": f"/out/{file.name}",
"mode": "ro",
}
cmd = ["env", "LD_LIBRARY_PATH=/out-libs", "/bin/bash", "/arvo"]
elif subset == "oss-fuzz":
if not is_integer(subid):
raise HTTPException(status_code=400, detail="Invalid task_id format for oss-fuzz")
oss_fuzz_path = data_dir / "oss-fuzz"
out_dir = oss_fuzz_path / subid / mode / "out"
meta_file = oss_fuzz_path / subid / mode / "metadata.json"
with open(meta_file) as f:
metadata = json.load(f)
fuzzer_name = metadata["fuzz_target"]
volumes = {str(poc_path.absolute()): {"bind": "/testcase", "mode": "ro"}}
for subfile in out_dir.iterdir():
host_path = str(subfile.absolute())
container_path = os.path.join("/out", subfile.name)
volumes[host_path] = {"bind": container_path, "mode": "ro"}
cmd = ["reproduce", fuzzer_name]
else:
raise HTTPException(status_code=400, detail="Invalid task_id format")
try:
container = client.containers.run(
image="cybergym/oss-fuzz-base-runner",
command=cmd,
volumes=volumes,
image=runner_image,
command=["/bin/bash", "-c", f"timeout -s SIGKILL {cmd_timeout} {shlex.join(cmd)} 2>&1"],
detach=True,
volumes=volumes,
)
out = container.logs(stdout=True, stderr=False, stream=True, follow=True)
exit_code = container.wait(timeout=docker_timeout)["StatusCode"]
@@ -147,44 +189,12 @@ def run_oss_fuzz_container(
return exit_code, docker_output
def run_container(
task_id: str,
poc_path: Path,
mode: Literal["vul", "fix"],
docker_timeout: int = DEFAULT_DOCKER_TIMEOUT,
cmd_timeout: int = DEFAULT_CMD_TIMEOUT,
**kwargs,
):
if task_id.startswith("arvo:"):
arvo_id = get_arvo_id(task_id)
return run_arvo_container(
poc_path,
arvo_id,
mode,
docker_timeout=docker_timeout,
cmd_timeout=cmd_timeout,
)
elif task_id.startswith("oss-fuzz:") or task_id.startswith("oss-fuzz-latest:"):
oss_fuzz_id = get_oss_fuzz_id(task_id)
oss_fuzz_path = kwargs.get("oss_fuzz_path")
return run_oss_fuzz_container(
poc_path,
oss_fuzz_id,
mode,
oss_fuzz_path,
docker_timeout=docker_timeout,
cmd_timeout=cmd_timeout,
)
else:
raise HTTPException(status_code=400, detail="Invalid task_id")
def get_poc_storage_path(poc_id: str, log_dir: Path):
# logs/ab/cd/1234/...
return log_dir / poc_id[:2] / poc_id[2:4] / poc_id
def submit_poc(db: Session, payload: Payload, mode: str, log_dir: Path, salt: str, oss_fuzz_path: Path | None = None):
def submit_poc(db: Session, payload: Payload, mode: str, log_dir: Path, salt: str, binary_only_mode: bool = False):
# TODO: limit output size for return
if not verify_task(payload.task_id, payload.agent_id, payload.checksum, salt=salt):
raise HTTPException(status_code=400, detail="Invalid checksum")
@@ -239,7 +249,12 @@ def submit_poc(db: Session, payload: Payload, mode: str, log_dir: Path, salt: st
)
# Run the PoC
exit_code, docker_output = run_container(payload.task_id, poc_bin_file, mode, oss_fuzz_path=oss_fuzz_path)
if binary_only_mode:
exit_code, docker_output = run_container_binary(
payload.task_id, poc_bin_file, mode, data_dir=server_conf.binary_dir
)
else:
exit_code, docker_output = run_container(payload.task_id, poc_bin_file, mode)
output_file = poc_dir / f"output.{mode}"
with open(output_file, "wb") as f:
f.write(docker_output)
@@ -255,7 +270,7 @@ def submit_poc(db: Session, payload: Payload, mode: str, log_dir: Path, salt: st
return res
def run_poc_id(db: Session, log_dir: Path, poc_id: str, rerun: bool = False, oss_fuzz_path: Path | None = None):
def run_poc_id(db: Session, log_dir: Path, poc_id: str, rerun: bool = False, binary_only_mode: bool = False):
records = db.query(PoCRecord).filter_by(poc_id=poc_id).all()
if len(records) != 1:
raise HTTPException(status_code=500, detail=f"{len(records)} PoC records for same poc_id found")
@@ -268,7 +283,12 @@ def run_poc_id(db: Session, log_dir: Path, poc_id: str, rerun: bool = False, oss
if rerun or record.vul_exit_code is None:
# Run the PoC
exit_code, docker_output = run_container(record.task_id, poc_path, "vul", oss_fuzz_path=oss_fuzz_path)
if binary_only_mode:
exit_code, docker_output = run_container_binary(
record.task_id, poc_path, "vul", data_dir=server_conf.binary_dir
)
else:
exit_code, docker_output = run_container(record.task_id, poc_path, "vul")
with open(poc_dir / "output.vul", "wb") as f:
f.write(docker_output)
update_poc_output(db, record, "vul", exit_code)
@@ -279,7 +299,12 @@ def run_poc_id(db: Session, log_dir: Path, poc_id: str, rerun: bool = False, oss
if rerun or record.fix_exit_code is None:
# Run the PoC
exit_code, docker_output = run_container(record.task_id, poc_path, "fix", oss_fuzz_path=oss_fuzz_path)
if binary_only_mode:
exit_code, docker_output = run_container_binary(
record.task_id, poc_path, "fix", data_dir=server_conf.binary_dir
)
else:
exit_code, docker_output = run_container(record.task_id, poc_path, "fix")
with open(poc_dir / "output.fix", "wb") as f:
f.write(docker_output)
update_poc_output(db, record, "fix", exit_code)

View File

@@ -1,4 +1,26 @@
from pydantic import BaseModel
from pathlib import Path
from pydantic import BaseModel, Field
from pydantic_settings import BaseSettings, SettingsConfigDict
from cybergym.task.types import DEFAULT_SALT
class ServerConfig(BaseSettings):
salt: str = Field(default=DEFAULT_SALT, description="Salt for checksum")
log_dir: Path = Field(default=Path("./logs"), description="Directory to store logs")
db_path: Path = Field(default=Path("./poc.db"), description="Path to SQLite DB")
binary_dir: Path | None = Field(default=None, description="Directory to store target binaries")
api_key: str = Field(
default="cybergym-030a0cd7-5908-4862-8ab9-91f2bfc7b56d", description="API key for authentication"
)
api_key_name: str = Field(default="X-API-Key", description="Name of the API key header")
max_file_size_mb: int = Field(default=10, description="Maximum file size for uploads in MB")
model_config = SettingsConfigDict(env_prefix="CYBERGYM_")
server_conf = ServerConfig()
class Payload(BaseModel):