BIND 10 #2485: bindctl crash on show of removed item

[BIND 10 Development]

#2485: bindctl crash on show of removed item
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            Reporter:  jreed     |                        Owner:
                Type:  defect    |                       Status:  new
            Priority:  medium    |                    Milestone:
           Component:  bind-ctl  |                   Resolution:
            Keywords:            |                 CVSS Scoring:
           Sensitive:  0         |              Defect Severity:  Medium
         Sub-Project:  Core      |  Feature Depending on Ticket:
Estimated Difficulty:  5         |          Add Hours to Ticket:  0
         Total Hours:  0         |                    Internal?:  0
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Comment (by naokikambe):

 Our operator seemed to hit the same issue while testing. He just tried to
 show an unassigned index in an array as following.

 {{{
 > config show data_sources/classes/IN
 data_sources/classes/IN[0]/type "sqlite3"       string  (default)
 data_sources/classes/IN[0]/params       {"database_file":
 "/home/kambe/bind10/var/bind10/zone.sqlite3"} any     (defaul\
 t)
 data_sources/classes/IN[0]/cache-enable false   boolean (default)
 data_sources/classes/IN[0]/cache-zones/ list
 > config show data_sources/classes/IN[1]
 Traceback (most recent call last):
   File "/usr/local/lib/python3.2/cmd.py", line 212, in onecmd
     func = getattr(self, 'do_' + cmd)
 AttributeError: 'BindCmdInterpreter' object has no attribute 'do_config'

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "/home/kambe/bind10/bin/bindctl", line 162, in <module>
     result = tool.run()
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 152, in run
     self.cmdloop()
   File "/usr/local/lib/python3.2/cmd.py", line 138, in cmdloop
     stop = self.onecmd(line)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 476, in onecmd
     Cmd.onecmd(self, line)
   File "/usr/local/lib/python3.2/cmd.py", line 214, in onecmd
     return self.default(line)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 442, in default
     self._parse_cmd(line)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 639, in _parse_cmd
     self._handle_cmd(cmd)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 426, in _handle_cmd
     self.apply_config_cmd(cmd)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/bindctl/bindcmd.py", line 719, in apply_config_cmd
     values = self.config_data.get_value_maps(identifier, show_all)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/isc/config/config_data.py", line 723, in get_value_maps
     self._append_value_item(result, spec_part, identifier, all, True)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/isc/config/config_data.py", line 630, in _append_value_item
     list_value, status = self.get_value(identifier)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/isc/config/config_data.py", line 603, in get_value
     value = self.get_default_value(identifier)
   File "/home/kambe/bind10/lib/python3.2/site-
 packages/isc/config/config_data.py", line 522, in get_default_value
     result = result[list_indices.pop(0)]
 IndexError: list index out of range
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2485#comment:3>
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