57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
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"""Create Docker TLSConfig from CertificateKeyPair"""
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from pathlib import Path
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from tempfile import gettempdir
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from typing import Optional
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from docker.tls import TLSConfig
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from passbook.crypto.models import CertificateKeyPair
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class DockerInlineTLS:
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"""Create Docker TLSConfig from CertificateKeyPair"""
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verification_kp: Optional[CertificateKeyPair]
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authentication_kp: Optional[CertificateKeyPair]
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def __init__(
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self,
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verification_kp: Optional[CertificateKeyPair],
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authentication_kp: Optional[CertificateKeyPair],
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) -> None:
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self.verification_kp = verification_kp
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self.authentication_kp = authentication_kp
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def write_file(self, name: str, contents: str) -> str:
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"""Wrapper for mkstemp that uses fdopen"""
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path = Path(gettempdir(), name)
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with open(path, "w") as _file:
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_file.write(contents)
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return str(path)
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def write(self) -> TLSConfig:
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"""Create TLSConfig with Certificate Keypairs"""
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# So yes, this is quite ugly. But sadly, there is no clean way to pass
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# docker-py (which is using requests (which is using urllib3)) a certificate
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# for verification or authentication as string.
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# Because we run in docker, and our tmpfs is isolated to us, we can just
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# write out the certificates and keys to files and use their paths
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config_args = {}
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if self.verification_kp:
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ca_cert_path = self.write_file(
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f"{self.verification_kp.pk.hex}-cert.pem",
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self.verification_kp.certificate_data,
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)
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config_args["ca_cert"] = ca_cert_path
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if self.authentication_kp:
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auth_cert_path = self.write_file(
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f"{self.authentication_kp.pk.hex}-cert.pem",
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self.authentication_kp.certificate_data,
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)
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auth_key_path = self.write_file(
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f"{self.authentication_kp.pk.hex}-key.pem",
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self.authentication_kp.key_data,
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)
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config_args["client_cert"] = (auth_cert_path, auth_key_path)
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return TLSConfig(**config_args)
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