98 lines
3.3 KiB
Python
98 lines
3.3 KiB
Python
from base64 import b64encode
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import json
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import socket
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import subprocess
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import tempfile
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from flask import g
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from flask.testing import FlaskClient
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import gssapi
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import pytest
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from requests import Request
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from requests_gssapi import HTTPSPNEGOAuth
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from ceo_common.krb5.utils import get_fwd_tgt
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__all__ = ['client']
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@pytest.fixture(scope='session')
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def client(app):
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app_client = app.test_client()
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with tempfile.TemporaryDirectory() as cache_dir:
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yield CeodTestClient(app_client, cache_dir)
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class CeodTestClient:
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def __init__(self, app_client: FlaskClient, cache_dir: str):
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self.client = app_client
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self.syscom_principal = 'ctdalek'
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# this is only used for the HTTPSNEGOAuth
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self.base_url = f'http://{socket.getfqdn()}'
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# keep a list of all of the principals for which we acquired a TGT
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self.principals = []
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# this is where we'll store the credentials for each principal
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self.ccache = 'DIR:' + cache_dir
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def get_auth(self, principal):
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name = gssapi.Name(principal)
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creds = gssapi.Credentials(
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name=name,
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usage='initiate',
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store={'ccache': self.ccache},
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)
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auth = HTTPSPNEGOAuth(
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opportunistic_auth=True,
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target_name='ceod',
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creds=creds,
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)
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return auth
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def get_headers(self, principal):
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if principal not in self.principals:
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# Acquire the initial TGT
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subprocess.run(
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['kinit', '-c', self.ccache, principal],
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text=True, input='krb5',
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check=True, stdout=subprocess.DEVNULL)
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self.principals.append(principal)
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# Get the Authorization header (SPNEGO).
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# The method doesn't matter here because we just need to extract
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# the header using req.prepare().
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req = Request('GET', self.base_url, auth=self.get_auth(principal))
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headers = list(req.prepare().headers.items())
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# Get the X-KRB5-CRED header (forwarded TGT).
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cred = b64encode(
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get_fwd_tgt('ceod/' + socket.getfqdn(), self.ccache)
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).decode()
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headers.append(('X-KRB5-CRED', cred))
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return headers
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def request(self, method, path, principal, **kwargs):
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# Make sure that we're not already in a request context, otherwise
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# g will get overridden
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with pytest.raises(RuntimeError):
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'' in g
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if principal is None:
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principal = self.syscom_principal
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resp = self.client.open(
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path, method=method, headers=self.get_headers(principal), **kwargs)
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status = int(resp.status.split(' ', 1)[0])
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if resp.headers['content-type'] == 'application/json':
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data = json.loads(resp.data)
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else:
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data = [json.loads(line) for line in resp.data.splitlines()]
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return status, data
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def get(self, path, principal=None, **kwargs):
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return self.request('GET', path, principal, **kwargs)
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def post(self, path, principal=None, **kwargs):
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return self.request('POST', path, principal, **kwargs)
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def patch(self, path, principal=None, **kwargs):
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return self.request('PATCH', path, principal, **kwargs)
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def delete(self, path, principal=None, **kwargs):
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return self.request('DELETE', path, principal, **kwargs)
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