Show warning when net/broadcast IP address is used in installer

https://fedorahosted.org/freeipa/ticket/5814

Reviewed-By: David Kupka <dkupka@redhat.com>

client/ipa-client-install

@@ -1651,6 +1651,20 @@ def update_dns(server, hostname, options):
         root_logger.info("Failed to determine this machine's ip address(es).")
         return
 
+    for ip in update_ips:
+        if ip.is_network_addr():
+            root_logger.warning("IP address %s might be network address", ip)
+            # fixme: once when loggers will be fixed, we can remove this print
+            print(
+                "WARNING: IP address {} might be network address".format(ip),
+                file=sys.stderr)
+        if ip.is_broadcast_addr():
+            root_logger.warning("IP address %s might be broadcast address", ip)
+            # fixme: once when loggers will be fixed, we can remove this print
+            print(
+                "WARNING: IP address {} might be broadcast address".format(ip),
+                file=sys.stderr)
+
     update_txt = "debug\n"
     update_txt += ipautil.template_str(DELETE_TEMPLATE_A,
                                        dict(HOSTNAME=hostname))

ipaserver/install/server/install.py

@@ -609,6 +609,20 @@ def install_check(installer):
                                              not installer.interactive, False,
                                              options.ip_addresses)
 
+    for ip in ip_addresses:
+        if ip.is_network_addr():
+            root_logger.warning("IP address %s might be network address", ip)
+            # fixme: once when loggers will be fixed, we can remove this print
+            print(
+                "WARNING: IP address {} might be network address".format(ip),
+                file=sys.stderr)
+        if ip.is_broadcast_addr():
+            root_logger.warning("IP address %s might be broadcast address", ip)
+            # fixme: once when loggers will be fixed, we can remove this print
+            print(
+                "WARNING: IP address {} might be broadcast address".format(ip),
+                file=sys.stderr)
+
     # installer needs to update hosts file when DNS subsystem will be
     # installed or custom addresses are used
     if options.ip_addresses or options.setup_dns:

ipaserver/install/server/replicainstall.py

@@ -13,6 +13,7 @@ import dns.reversename as dnsreversename
 import os
 import shutil
 import socket
+import sys
 import tempfile
 
 import six
@@ -735,6 +736,28 @@ def install_check(installer):
                 config.host_name, not installer.interactive, False,
                 options.ip_addresses)
 
+        for ip in config.ips:
+            if ip.is_network_addr():
+                root_logger.warning(
+                    "IP address %s might be network address", ip)
+                # fixme: once when loggers will be fixed, we can remove this
+                # print
+                print(
+                    "WARNING: IP address {} might be network address".format(
+                        ip),
+                    file=sys.stderr
+                )
+            if ip.is_broadcast_addr():
+                root_logger.warning(
+                    "IP address %s might be broadcast address", ip)
+                # fixme: once when loggers will be fixed, we can remove this
+                # print
+                print(
+                    "WARNING: IP address {} might be broadcast address".format(
+                        ip),
+                    file=sys.stderr
+                )
+
     except errors.ACIError:
         raise ScriptError("\nThe password provided is incorrect for LDAP server "
                           "%s" % config.master_host_name)
@@ -1306,6 +1329,26 @@ def promote_check(installer):
                 config.host_name, not installer.interactive,
                 False, options.ip_addresses)
 
+        for ip in config.ips:
+            if ip.is_network_addr():
+                root_logger.warning(
+                    "IP address %s might be network address", ip)
+                # fixme: once when loggers will be fixed, we can remove this
+                # print
+                print(
+                    "WARNING: IP address {} might be network address".format(
+                        ip), file=sys.stderr
+                )
+            if ip.is_broadcast_addr():
+                root_logger.warning(
+                    "IP address %s might be broadcast address", ip)
+                # fixme: once when loggers will be fixed, we can remove this
+                # print
+                print(
+                    "WARNING: IP address {} might be broadcast address".format(
+                        ip), file=sys.stderr
+                )
+
     except errors.ACIError:
         raise ScriptError("\nInsufficient privileges to promote the server.")
     except errors.LDAPError: