45 lines
1.6 KiB
Python
45 lines
1.6 KiB
Python
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from os import getenv
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import hmac
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from fastapi import Request
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from fastapi.exceptions import HTTPException
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async def check_ref(request: Request):
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json = await request.json()
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if json["ref"] and json["ref"] == f"refs/heads/{getenv('BRANCH')}":
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return
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raise HTTPException(status_code=202, detail="Invalid branch")
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async def auth_hook(request: Request):
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try:
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json = await request.json()
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text = await request.body()
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except:
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raise HTTPException(status_code=204, detail="Missing or bad content")
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header_signature = request.headers.get('X-Hub-Signature')
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if not header_signature:
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raise HTTPException(status_code=400, detail="Missing signature")
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# separate the signature from the sha1 indication
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sha_name, signature = header_signature.split('=')
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if sha_name != 'sha1':
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raise HTTPException(status_code=400, detail="Invalid signature")
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secret_key = getenv('WEBHOOK_SECRET')
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if secret_key is None:
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raise HTTPException(status_code=503, detail="Missing WEBHOOK_SECRET")
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# create a new hmac with the secret key and the request data
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mac = hmac.new(secret_key.encode(), msg=text, digestmod='sha1')
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# verify the digest matches the signature
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if not hmac.compare_digest(mac.hexdigest(), signature):
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raise HTTPException(status_code=403, detail="Unauthorized")
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async def auth_web(request: Request):
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token = request._query_params.get("token")
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if token is None or token is "":
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raise HTTPException(status_code=400, detail="Missing token")
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if token == getenv("TOKEN"):
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return
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raise HTTPException(status_code=403, detail="Invalid token")
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