Sergiu Dumitriu wrote:
> On 08/18/2010 11:49 PM, Caleb James DeLisle wrote:
>>
>> Sergiu Dumitriu wrote:
>>> On 08/18/2010 04:43 PM, Anca Luca wrote:
>>>> Hi Caleb,
>>>>
>>>> On 08/17/2010 09:15 PM, Caleb James DeLisle wrote:
>>>>> I am going to commit this change and want to continue to discuss possible 
>>>>> side effects.
>>>>>
>>>>> I think this change will solve the bug causing database corruption when 
>>>>> list property is switched to relational storage
>>>>> (I can't find this in jira anyone know the number? Sergiu?)
>>>>>
>>>>> I will be adding more tests and am ready to revert it at the first sign 
>>>>> of trouble.
>>>> I haven't had time to look at the issue to be able to cast a vote
>>>> knowing what I am saying but
>>>>
>>>> i don't agree with this approach. please don't.
>>> One thing that will break is HQL queries hardcoded on StringProperty.
>> I thought about this but it seemed to be acceptable since the only time 
>> anything would break is when the input
>> exceeded 255 chars and in such cases the old behavior was to blow up with a 
>> database error.
> 
> Well, not quite.
> 
> Before:
> 
> X edits a document, inputs a long value, tries to save: error (not the 
> ugly exception that gets thrown now, but a nice error message which 
> mentions the problem nicely). User inputs a shorter text, saves, 
> everyone is happy.
> 
> After:
> 
> X edits a document, inputs a long value, saves, but now the livetable 
> which lists that kind of documents doesn't filter or order correctly on 
> that column anymore.

I'm not totally convinced that this change is a good one and since you and Anca 
disagree with it, I'll
pursue other avenues for long password hash handling.


Caleb

> 
>>>> Thanks,
>>>> Anca
>>>>
>>>>> Caleb
>>>>>
>>>>>
>>>>> Caleb James DeLisle wrote:
>>>>>> I have what I think is a better solution.
>>>>>> I have found that I can replace the StringProperty objects with 
>>>>>> LargeStringProperty in
>>>>>> XWikiHibernateStore and they will save and load ok.
>>>>>> I have a patch http://jira.xwiki.org/jira/browse/XWIKI-5415 and would be 
>>>>>> interested to
>>>>>> hear what others have to say. In the mean time I will work on adding 
>>>>>> automated tests
>>>>>> to prove that load save and search continue to work.
>>>>>>
>>>>>> Caleb
>>>>>>
>>>>>> Thomas Mortagne wrote:
>>>>>>> +0
>>>>>>>
>>>>>>> Le 2010 8 10 19:34, "Caleb James DeLisle"<[email protected]>    a
>>>>>>> écrit :
>>>>>>>> Because protectPassword generates a base-64 encoded java serialized 
>>>>>>>> form,
>>>>>>> the size is quite a bit larger than
>>>>>>>> the 255 character limit of StringProperty and thus PasswordProperty.
>>>>>>>>
>>>>>>>> The use of java serialization is central to the upgradability of the
>>>>>>> password verification function because
>>>>>>>> any new class which implements PasswordVerificationFunction 
>>>>>>>> automatically
>>>>>>> works.
>>>>>>>> Given this, I want to migrate the database to move password hashes into
>>>>>>> the xwikilargestrings table and change
>>>>>>>> PasswordProperty to extend LargeStringProperty. During this migration, 
>>>>>>>> any
>>>>>>> passwords still stored in plaintext
>>>>>>>> will be ported to the scrypt function, passwords stored as a hash will
>>>>>>> have an exclamation mark pretended to the
>>>>>>>> text (this is invalid base64) and be inserted into the table as is.
>>>>>>>>
>>>>>>>> PasswordClass will keep the sha-512 hash function for legacy passwords 
>>>>>>>> but
>>>>>>> will port passwords to the new format
>>>>>>>> as users log in.
>>>>>>>>
>>>>>>>> These changes will allow us to close
>>>>>>>> http://jira.xwiki.org/jira/browse/XWIKI-70
>>>>>>>> and
>>>>>>>> http://jira.xwiki.org/jira/browse/XWIKI-582
>>>>>>>>
>>>>>>>>
>>>>>>>> WDYT?
>>>>>>>>
>>>>>>>>
>>>>>>>> Caleb
> 
> 

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