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Confirm TLS connectivity when scanning hosts

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In certain environments, Confluent may have an IP address that
is fake, but then there is elsewhere with that same IP for real.

To mitigate this, follow up basic connectivity with proof of having
an associated certificate.
This commit is contained in:
Jarrod Johnson
2023-01-24 08:22:00 -05:00
parent 0008998680
commit d14d28caf8
1 changed files with 7 additions and 0 deletions
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7
confluent_osdeploy/common/initramfs/opt/confluent/bin/apiclient
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@ -304,6 +304,10 @@ class HTTPSClient(client.HTTPConnection, object):
def check_connections(self):
foundsrv = None
hosts = self.hosts
ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
ctx.load_verify_locations('/etc/confluent/ca.pem')
ctx.verify_mode = ssl.CERT_REQUIRED
ctx.check_hostname = True
for timeo in (0.1, 5):
for host in hosts:
try:
@ -311,11 +315,14 @@ class HTTPSClient(client.HTTPConnection, object):
psock = socket.socket(addrinf[0])
psock.settimeout(timeo)
psock.connect(addrinf[4])
ctx.wrap_socket(psock, server_hostname=host)
foundsrv = host
psock.close()
break
except OSError:
continue
except ssl.SSLError:
continue
else:
continue
break