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Code Issues Releases Wiki Activity

also test reverse DNS

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This commit is contained in:
Joshua Tauberer 2014-04-23 14:10:04 -04:00
parent be39f50aeb
commit ec11241a7a
1 changed files with 25 additions and 12 deletions
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37
tests/dns.py
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@ -40,7 +40,6 @@ def dig(server, digargs):
return response return response
def test(server, description): def test(server, description):
# call dig a few times with different parameters
digoutput = \ digoutput = \
dig(server, [hostname])\ dig(server, [hostname])\
+ dig(server, ["ns", hostname]) \ + dig(server, ["ns", hostname]) \
@ -50,7 +49,15 @@ def test(server, description):
+ dig(server, ["mx", hostname]) \ + dig(server, ["mx", hostname]) \
+ dig(server, ["txt", hostname]) \ + dig(server, ["txt", hostname]) \
+ dig(server, ["txt", "mail._domainkey." + hostname]) + dig(server, ["txt", "mail._domainkey." + hostname])
return test2(digoutput, server, description, expected)
def test_ptr(server, description):
ipaddr_reversed = ".".join( reversed( ipaddr.split(".") ) )
expected = "%s.in-addr.arpa. ##### IN PTR %s.\n" % (ipaddr_reversed, hostname)
digoutput = dig(server, ["-x", ipaddr])
return test2(digoutput, server, description, expected)
def test2(digoutput, server, description, expected):
# Show a diff if there are any changes # Show a diff if there are any changes
has_diff = False has_diff = False
def split(s): return [line+"\n" for line in s.split("\n")] def split(s): return [line+"\n" for line in s.split("\n")]
@ -59,20 +66,26 @@ def test(server, description):
print("The response from %s (%s) is not correct:" % (description, server)) print("The response from %s (%s) is not correct:" % (description, server))
print() print()
has_diff = True has_diff = True
sys.stdout.write(line)
sys.stdout.write(line)
return not has_diff return not has_diff
# Test the response from the machine itself. # Test the response from the machine itself.
if test(ipaddr, "Mail-in-a-Box"): if not test(ipaddr, "Mail-in-a-Box"):
print ()
print ("Please run the Mail-in-a-Box setup script on %s again." % hostname)
sys.exit(1)
else:
# If those settings are OK, also test Google's Public DNS # If those settings are OK, also test Google's Public DNS
# to see if the machine is hooked up to recursive DNS properly. # to see if the machine is hooked up to recursive DNS properly.
if test("8.8.8.8", "Google Public DNS"): if not test("8.8.8.8", "Google Public DNS"):
print ("DNS is OK.")
sys.exit(0)
else:
print () print ()
print ("Check that the nameserver settings for %s are correct at your domain registrar." % hostname) print ("Check that the nameserver settings for %s are correct at your domain registrar. It may take a few hours for Google Public DNS to update after changes on your Mail-in-a-Box." % hostname)
sys.exit(1)
sys.exit(1) else:
# And if that's OK, also check reverse DNS (the PTR record).
if not test_ptr("8.8.8.8", "Google Public DNS (Reverse DNS)"):
print ()
print ("The reverse DNS for %s is not correct. Consult your ISP for how to set the reverse DNS (also called the PTR record) for %s to %s." % (hostname, hostname, ipaddr))
sys.exit(1)
else:
print ("DNS is OK.")