samba-tool: don't print backtrace on simple DNS errors

samba-tool throws backtraces even for simple DNS error
messages, we should not frighten users for no good reason.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13721

Signed-off-by: Bjoern Jacke <bj@sernet.de>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Björn Jacke <bj@sernet.de>
Autobuild-Date(master): Wed Dec 19 20:58:52 CET 2018 on sn-devel-144

diff --git a/python/samba/netcmd/dns.py b/python/samba/netcmd/dns.py
index b50e7b7dd0c2a22bfea394858ad4b07ebf64f99a..b7459a71acd9d5b340f167059b23c7420e1ad7f1 100644 (file)
--- a/python/samba/netcmd/dns.py
+++ b/python/samba/netcmd/dns.py
@@ -780,7 +780,7 @@ class cmd_zonedelete(Command):
                                             None)
         except WERRORError as e:
             if e.args[0] == werror.WERR_DNS_ERROR_ZONE_DOES_NOT_EXIST:
-                self.outf.write('Zone does not exist and so could not be deleted.')
+                raise CommandError('Zone does not exist and so could not be deleted.')
             raise e
 
         self.outf.write('Zone %s deleted successfully\n' % zone)
@@ -860,7 +860,7 @@ class cmd_query(Command):
                 None, record_type, select_flags, None, None)
         except WERRORError as e:
             if e.args[0] == werror.WERR_DNS_ERROR_NAME_DOES_NOT_EXIST:
-                self.outf.write('Record or zone does not exist.')
+                raise CommandError('Record or zone does not exist.')
             raise e
 
         print_dnsrecords(self.outf, res)
@@ -940,7 +940,7 @@ class cmd_add_record(Command):
                                          0, server, zone, name, add_rec_buf, None)
         except WERRORError as e:
             if e.args[0] == werror.WERR_DNS_ERROR_NAME_DOES_NOT_EXIST:
-                self.outf.write('Zone does not exist; record could not be added.\n')
+                raise CommandError('Zone does not exist; record could not be added.')
             raise e
 
         self.outf.write('Record added successfully\n')
@@ -1011,7 +1011,7 @@ class cmd_update_record(Command):
                                          del_rec_buf)
         except WERRORError as e:
             if e.args[0] == werror.WERR_DNS_ERROR_NAME_DOES_NOT_EXIST:
-                self.outf.write('Zone does not exist; record could not be updated.\n')
+                raise CommandError('Zone does not exist; record could not be updated.')
             raise e
 
         self.outf.write('Record updated successfully\n')
@@ -1066,7 +1066,7 @@ class cmd_delete_record(Command):
                                          del_rec_buf)
         except WERRORError as e:
             if e.args[0] == werror.WERR_DNS_ERROR_NAME_DOES_NOT_EXIST:
-                self.outf.write('Zone does not exist; record could not be deleted.\n')
+                raise CommandError('Zone does not exist; record could not be deleted.')
             raise e
 
         self.outf.write('Record deleted successfully\n')