From 6dbc4ccbe42835780f7716d96ec45a9b94ed8b64 Mon Sep 17 00:00:00 2001
From: Petr Spacek <pspacek@redhat.com>
Date: Apr 28 2016 16:46:52 +0000
Subject: Remove function ipapython.ipautil.host_exists()


The function duplicated ipalib.util.verify_host_resolvable() in slightly
incompatible way because it used NSS while rest of IPA is using only DNS.

Reviewed-By: Martin Basti <mbasti@redhat.com>

---

diff --git a/install/tools/ipa-replica-manage b/install/tools/ipa-replica-manage
index d6d6ef8..b8f56a7 100755
--- a/install/tools/ipa-replica-manage
+++ b/install/tools/ipa-replica-manage
@@ -38,9 +38,8 @@ from ipaserver.install import opendnssecinstance, dnskeysyncinstance
 from ipapython import version, ipaldap
 from ipalib import api, errors, util
 from ipalib.constants import CACERT
-from ipalib.util import (create_topology_graph,
-    get_topology_connection_errors, has_managed_topology)
-from ipapython.ipa_log_manager import *
+from ipalib.util import has_managed_topology, verify_host_resolvable
+from ipapython.ipa_log_manager import root_logger, standard_logging_setup
 from ipapython.dn import DN
 from ipapython.config import IPAOptionParser
 from ipaclient import ipadiscovery
@@ -815,10 +814,14 @@ def check_last_link(delrepl, realm, dirman_passwd, force):
 
 
 def enforce_host_existence(host, message=None):
-    if host is not None and not ipautil.host_exists(host):
-        if message is None:
-            message = "Unknown host %s" % host
+    if host is None:
+        return
 
+    try:
+        verify_host_resolvable(host, root_logger)
+    except errors.DNSNotARecordError as ex:
+        if message is None:
+            message = "Unknown host %s: %s" % (host, ex)
         sys.exit(message)
 
 def ensure_last_services(conn, hostname, masters, options):
diff --git a/ipapython/ipautil.py b/ipapython/ipautil.py
index 878d51d..6eac667 100644
--- a/ipapython/ipautil.py
+++ b/ipapython/ipautil.py
@@ -1014,20 +1014,6 @@ def bind_port_responder(port, socket_type=socket.SOCK_STREAM, socket_timeout=Non
         raise last_socket_error # pylint: disable=E0702
 
 
-def host_exists(host):
-    """
-    Resolve the host to see if it exists.
-
-    Returns True/False
-    """
-    try:
-        socket.getaddrinfo(host, 80)
-    except socket.gaierror:
-        return False
-    else:
-        return True
-
-
 def reverse_record_exists(ip_address):
     """
     Checks if IP address have some reverse record somewhere.