[Samba] Fwd: net rpc lookup from group names that start with "-"

[Rowland Penny]

On 01/10/15 09:02, mathias dufresne wrote:
> Hi Rowland,
>
> I'm not good at betting :p
>
> I didn't meant to be rough answering that. My point was the same as for the
> difference between advising to run ./configure or ./configure --help: give
> users information for they deal with issue themselves. That's why I took
> time to explain these behaviours, with errors as shown below.
>
> Now if it works it's because Samba is well developed, or they - and we,
> users - are lucky. Most commands don't take backslash in account:
>
> $ echo toto > -h
> $ cat -h
> cat : option invalide -- 'h'
> $ cat \-h
> cat : option invalide -- 'h'
> $ cat '\-h'
> cat: \-h: No such file or directory
> $ cat "\-h"
> cat: \-h: No such file or directory
> $ cat -- -h
> toto
>
> Anyway all that shows I was wrong: "\-h" is not interpreted by the shell
> and the command receives \-h as file name, which is not what I expected.
> I'm growing old perhaps, I don't take enough time to test, too much trust
> into my experience, which is always a bad thing.
>
> Sorry to have been rude, have a nice day ;)
>
> Cheers,
>
> mathias
>
> 2015-09-30 18:04 GMT+02:00 Rowland Penny <rowlandpenny241155 at gmail.com>:
>
>> On 30/09/15 15:59, mathias dufresne wrote:
>>
>>> I bet that won't work.
>>> net rpc ..... "\-dash group" -> the shell look into quotes and interpret
>>> things inside quotes. Because of double quotes. So the shell will
>>> interpret
>>> \- and send only the dash to the command.
>>>
>>> net rpc ..... '\-dash group' -> the shell do not interpret things inside
>>> the quotes, because simple quotes. The shell will send [\-dash group] to
>>> the command.
>>>
>>> This is the same as:
>>> net rpc ..... "\\-dash group" -> shell interpret \\, transform it into \
>>> and send \- to the command.
>>>
>>> But the point is command is waiting for switches after dashes (-a -o...
>>> anything to tell the command how to react). The standard to tell commands
>>> there is no more switches is double dashes "--". And that double dashes
>>> must be surrounded by spaces to be one word and be correctly interpreted
>>> by
>>> the command.
>>>
>>>
>> Hi Mathias, This got my interest and after I thought 'why would you be
>> daft enough to start any object name with a dash', I wondered if it was
>> possible to do what the OP wanted.
>> I tried to create a group called '-dashtest' and I was able to create it
>> (after a couple of attempts). I then added a user to the group, I had to
>> resort to ldbedit to do this.
>> I then tried the command the OP posted and it didn't work (as expected),
>> so I tried adding the forwardslash, not really expecting it to work, but it
>> did.
>>
>> Rowland
>>
>>
>>
>> Rowland
>>
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Hi, no I didn't take what you said as rude, after all, I was surprised 
it worked =-O

It just shouldn't work, but does, well it did for me, having said that, 
the correct cure is for the OP to stop being stupid and to remove the 
'-' from all and any object names.

Rowland