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from k5test import *
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# Create a realm with the KDC one hour in the past.
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realm = K5Realm(start_kdc=False)
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realm.start_kdc(['-T', '-3600'])
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# kinit (no preauth) should work, and should set a clock skew allowing
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# kvno to work, with or without FAST.
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mark('kdc_timesync enabled, no preauth')
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realm.kinit(realm.user_princ, password('user'))
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realm.run([kvno, realm.host_princ])
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realm.kinit(realm.user_princ, password('user'), flags=['-T', realm.ccache])
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realm.run([kvno, realm.host_princ])
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realm.run([kdestroy])
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# kinit (with preauth) should work, with or without FAST.
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mark('kdc_timesync enabled, with preauth')
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realm.run([kadminl, 'modprinc', '+requires_preauth', 'user'])
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realm.kinit(realm.user_princ, password('user'))
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realm.run([kvno, realm.host_princ])
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realm.kinit(realm.user_princ, password('user'), flags=['-T', realm.ccache])
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realm.run([kvno, realm.host_princ])
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realm.run([kdestroy])
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realm.stop()
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# Repeat the above tests with kdc_timesync disabled.
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conf = {'libdefaults': {'kdc_timesync': '0'}}
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realm = K5Realm(start_kdc=False, krb5_conf=conf)
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realm.start_kdc(['-T', '-3600'])
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# Get tickets to use for FAST kinit tests. The start time offset is
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# ignored by the KDC since we aren't getting postdatable tickets, but
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# serves to suppress the client clock skew check on the KDC reply.
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fast_cache = realm.ccache + '.fast'
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realm.kinit(realm.user_princ, password('user'),
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flags=['-s', '-3600s', '-c', fast_cache])
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# kinit should detect too much skew in the KDC response. kinit with
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# FAST should fail from the KDC since the armor AP-REQ won't be valid.
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mark('KDC timesync disabled, no preauth')
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realm.kinit(realm.user_princ, password('user'), expected_code=1,
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expected_msg='Clock skew too great in KDC reply')
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realm.kinit(realm.user_princ, None, flags=['-T', fast_cache], expected_code=1,
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expected_msg='Clock skew too great while')
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# kinit (with preauth) should fail from the KDC, with or without FAST.
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mark('KDC timesync disabled, with preauth')
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realm.run([kadminl, 'modprinc', '+requires_preauth', 'user'])
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realm.kinit(realm.user_princ, password('user'), expected_code=1,
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expected_msg='Clock skew too great while')
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realm.kinit(realm.user_princ, None, flags=['-T', fast_cache], expected_code=1,
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expected_msg='Clock skew too great while')
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success('Clock skew tests')
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