# Authors:
#   Nathaniel McCallum <npmccallum@redhat.com>
#
# Copyright (C) 2014  Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import codecs
import os
import pytest

from ipaserver.install.ipa_otptoken_import import PSKCDocument, ValidationError
from ipaserver.install.ipa_otptoken_import import convertHashName

basename = os.path.join(os.path.dirname(__file__), "data")

@pytest.mark.tier1
class test_otptoken_import:
    def test_figure3(self):
        doc = PSKCDocument(os.path.join(basename, "pskc-figure3.xml"))
        assert doc.keyname is None
        assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
            [(u'12345678', {
                'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
                'ipatokenvendor': u'Manufacturer',
                'ipatokenserial': u'987654321',
                'ipatokenhotpcounter': 0,
                'ipatokenotpdigits': 8,
                'type': u'hotp',
                })]

    def test_figure4(self):
        doc = PSKCDocument(os.path.join(basename, "pskc-figure4.xml"))
        assert doc.keyname is None
        try:
            [(t.id, t.options) for t in doc.getKeyPackages()]
        except ValidationError: # Referenced keys are not supported.
            pass
        else:
            assert False

    def test_figure5(self):
        doc = PSKCDocument(os.path.join(basename, "pskc-figure5.xml"))
        assert doc.keyname is None
        try:
            [(t.id, t.options) for t in doc.getKeyPackages()]
        except ValidationError: # PIN Policy is not supported.
            pass
        else:
            assert False

    def test_figure6(self):
        doc = PSKCDocument(os.path.join(basename, "pskc-figure6.xml"))
        assert doc.keyname == 'Pre-shared-key'
        doc.setKey(codecs.decode('12345678901234567890123456789012', 'hex'))
        assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
            [(u'12345678', {
                'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
                'ipatokenvendor': u'Manufacturer',
                'ipatokenserial': u'987654321',
                'ipatokenhotpcounter': 0,
                'ipatokenotpdigits': 8,
                'type': u'hotp'})]

    def test_figure7(self):
        doc = PSKCDocument(os.path.join(basename, "pskc-figure7.xml"))
        assert doc.keyname == 'My Password 1'
        doc.setKey(b'qwerty')
        assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
            [(u'123456', {
                'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
                'ipatokenvendor': u'TokenVendorAcme',
                'ipatokenserial': u'987654321',
                'ipatokenotpdigits': 8,
                'type': u'hotp'})]

    def test_figure8(self):
        try:
            PSKCDocument(os.path.join(basename, "pskc-figure8.xml"))
        except NotImplementedError: # X.509 is not supported.
            pass
        else:
            assert False

    def test_invalid(self):
        try:
            PSKCDocument(os.path.join(basename, "pskc-invalid.xml"))
        except ValueError: # File is invalid.
            pass
        else:
            assert False

    def test_mini(self):
        try:
            doc = PSKCDocument(os.path.join(basename, "pskc-mini.xml"))
            for t in doc.getKeyPackages():
                t._PSKCKeyPackage__process()
        except ValidationError: # Unsupported token type.
            pass
        else:
            assert False

    def test_full(self):
        doc = PSKCDocument(os.path.join(basename, "full.xml"))
        assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
            [(u'KID1', {
                'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
                'ipatokennotafter': u'20060531000000Z',
                'ipatokennotbefore': u'20060501000000Z',
                'ipatokenserial': u'SerialNo-IssueNo',
                'ipatokentotpclockoffset': 60000,
                'ipatokenotpalgorithm': u'sha1',
                'ipatokenvendor': u'iana.dummy',
                'description': u'FriendlyName',
                'ipatokentotptimestep': 200,
                'ipatokenhotpcounter': 0,
                'ipatokenmodel': u'Model',
                'ipatokenotpdigits': 8,
                'type': u'hotp',
            })]

    def test_valid_tokens(self):
        assert convertHashName('sha1') == u'sha1'
        assert convertHashName('hmac-sha1') == u'sha1'
        assert convertHashName('sha224') == u'sha224'
        assert convertHashName('hmac-sha224') == u'sha224'
        assert convertHashName('sha256') == u'sha256'
        assert convertHashName('hmac-sha256') == u'sha256'
        assert convertHashName('sha384') == u'sha384'
        assert convertHashName('hmac-sha384') == u'sha384'
        assert convertHashName('sha512') == u'sha512'
        assert convertHashName('hmac-sha512') == u'sha512'

    def test_invalid_tokens(self):
        """The conversion defaults to sha1 on unknown hashing"""
        assert convertHashName('something-sha256') == u'sha1'
        assert convertHashName('') == u'sha1'
        assert convertHashName(None) == u'sha1'