checkdmarc/tests.py at master · oasiswork/checkdmarc · GitHub

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import unittest

import checkdmarc

known_good_domains = [
    "fbi.gov",
    "dhs.gov",
    "hhs.gov",
    "paypal.com",
    "google.com",
    "microsoft.com",
    "amazon.com",
    "accenture.com"
]


class Test(unittest.TestCase):
    def testKnownGood(self):
        """Domains with known SPF and DMARC records"""

        results = checkdmarc.check_domains(known_good_domains)
        for domain in results:
            spf_error = None
            dmarc_error = None
            if "error" in domain["spf"]:
                spf_error = domain["spf"]["error"]
            if "error" in domain["dmarc"]:
                dmarc_error = domain["dmarc"]["error"]
            self.assertEqual(domain["spf"]["valid"], True,
                             "Known good domain {0} failed SPF check:"
                             "\n\n{0}".format(domain["domain"], spf_error))
            self.assertEqual(domain["dmarc"]["valid"], True,
                             "Known good domain {0} failed DMARC check:"
                             "\n\n{1}".format(domain["domain"], dmarc_error))

    def testIncludeMissingSPF(self):
        """SPF records that include domains that are missing SPF records
        raise SPFRecordNotFound"""

        spf_record = '"v=spf1 include:spf.comendosystems.com ' \
                     'include:bounce.peytz.dk include:etrack.indicia.dk ' \
                     'include:etrack1.com include:mail1.dialogportal.com ' \
                     'include:mail2.dialogportal.com a:mailrelay.jppol.dk ' \
                     'a:sendmail.jppol.dk ?all"'
        domain = "ekstrabladet.dk"
        self.assertRaises(checkdmarc.SPFRecordNotFound,
                          checkdmarc.parse_spf_record, spf_record, domain)

    def testTooManySPFDNSLookups(self):
        """SPF records with > 10 SPF mechanisms that cause DNS lookups raise
        SPFTooManyDNSLookups"""

        spf_record = "v=spf1 ip4:205.131.177.0/24 ip4:205.131.188.0/24 " \
                     "ip4:73.23.28.0/24 ip4:137.227.97.89/32 " \
                     "ip4:137.227.97.90/32 ip4:137.227.196.62/32 " \
                     "ip4:137.227.28.0/24 ip4:137.227.82.0/24 " \
                     "ip4:198.183.146.165/32 ip6:2620:109:20:2000::0141 " \
                     "ip6:2620:109:20:2000::0158 ip6:2620:109:0:2000::251  " \
                     "include:leepfrog.com include:spf.mailengine1.com " \
                     "include:monster.com include:accenture.com " \
                     "include:usalearning.net include:MAAS360.com " \
                     "include:MAAS360.info include:Fiberlink.com -all"
        domain = "opm.gov"
        self.assertRaises(checkdmarc.SPFTooManyDNSLookups,
                          checkdmarc.parse_spf_record, spf_record, domain)

    def testSPFSyntaxErrors(self):
        """SPF record syntax errors raise SPFSyntaxError"""

        spf_record = '"v=spf1 mx a:mail.cohaesio.net ' \
                     'include: trustpilotservice.com ~all"'
        domain = "surftown.dk"
        self.assertRaises(checkdmarc.SPFSyntaxError,
                          checkdmarc.parse_spf_record, spf_record, domain)

    def testSPFIncludeLoop(self):
        """SPF record with include loop raises SPFIncludeLoop"""

        spf_record = '"v=spf1 include:example.com"'
        domain = "example.com"
        self.assertRaises(checkdmarc.SPFIncludeLoop,
                          checkdmarc.parse_spf_record, spf_record, domain)

    def testSPFMissingMXRecord(self):
        """A warning is issued if a SPF record contains a mx mechanism
        pointing to a domain that has no MX records"""

        spf_record = '"v=spf1 mx a mx:mail.hhj.no ~all"'
        domain = "pario.no"
        results = checkdmarc.parse_spf_record(spf_record, domain)
        self.assertIn("mail.hhj.no does not have any MX records",
                      results["warnings"])

    def testSPFMissingARecord(self):
        """A warning is issued if a SPF record contains a mx mechanism
        pointing to a domain that has no A records"""

        spf_record = '"v=spf1 include:_spf.bibsyst.no a mx ~all"'
        domain = "sogne.folkebibl.no"
        results = checkdmarc.parse_spf_record(spf_record, domain)
        self.assertIn("sogne.folkebibl.no does not have any A/AAAA records",
                      results["warnings"])

    def testDMARCPctLessThan100Warning(self):
        """A warning is issued if the DMARC pvt value is less than 100"""

        dmarc_record = "v=DMARC1; p=none; sp=none; fo=1; pct=50; adkim=r; " \
                       "aspf=r; rf=afrf; ri=86400; " \
                       "rua=mailto:[email protected]; " \
                       "ruf=mailto:[email protected]"
        domain = "energy.gov"
        results = checkdmarc.parse_dmarc_record(dmarc_record, domain)
        self.assertIn("pct value is less than 100",
                      results["warnings"][0])

    def testInvalidDMARCURI(self):
        """An invalid DMARC report URI raises InvalidDMARCReportURI"""

        dmarc_record = "v=DMARC1; p=none; [email protected]," \
                       "mailto:[email protected]"
        domain = "dea.gov"
        self.assertRaises(checkdmarc.InvalidDMARCReportURI,
                          checkdmarc.parse_dmarc_record, dmarc_record, domain)

        dmarc_record = "v=DMARC1; p=none; rua=__" \
                       "mailto:[email protected]," \
                       "mailto:[email protected]"
        self.assertRaises(checkdmarc.InvalidDMARCReportURI,
                          checkdmarc.parse_dmarc_record, dmarc_record, domain)

    def testUnverifiedDMARCURIDestination(self):
        """Unverified DMARC URI raises UnverifiedDMARCURIDestination"""
        dmarc_record = "v=DMARC1; p=none; rua=mailto:[email protected]"
        domain = "example.net"
        self.assertRaises(checkdmarc.UnverifiedDMARCURIDestination,
                          checkdmarc.parse_dmarc_record,
                          dmarc_record,
                          domain)

        dmarc_record = "v=DMARC1; p=none; rua=mailto:[email protected]"
        self.assertRaises(checkdmarc.UnverifiedDMARCURIDestination,
                          checkdmarc.parse_dmarc_record,
                          dmarc_record,
                          domain)

    def testInvalidDMARCPolicyValue(self):
        """An invalid DMARC policy value raises InvalidDMARCTagValue """
        dmarc_record = "v=DMARC1; p=foo; rua=mailto:[email protected]"
        domain = "example.com"
        self.assertRaises(checkdmarc.InvalidDMARCTagValue,
                          checkdmarc.parse_dmarc_record,
                          dmarc_record,
                          domain)

    def testInvalidDMARCfo(self):
        """An invalid DMARC fo tag value raises InvalidDMARCTagValue"""

        dmarc_record = "v=DMARC1;p=none;aspf=s;adkim=s;fo=0:1:d:s;" \
                       "ruf=mailto:[email protected];" \
                       "rua=mailto:[email protected]"
        domain = "omb.gov"
        self.assertRaises(checkdmarc.InvalidDMARCTagValue,
                          checkdmarc.parse_dmarc_record, dmarc_record, domain)


if __name__ == "__main__":
    unittest.main(verbosity=2)