Re: Refactoring base64 encoding and decoding into a safer interface

> On 2 Jul 2019, at 07:41, Michael Paquier  wrote:

>> In the below passage, we leave the input buffer with a non-complete
>> encoded string.  Should we memset the buffer to zero to avoid the
>> risk that code which fails to check the return value believes it has
>> an encoded string?
> 
> Hmm.  Good point.  I have not thought of that, and your suggestion
> makes sense.
> 
> Another question is if we'd want to actually use explicit_bzero()
> here, but that could be a discussion on this other thread, except if
> the patch discussed there is merged first:
> https://www.postgresql.org/message-id/42d26bde-5d5b-c90d-87ae-6cab875f73be@2ndquadrant.com

I’m not sure we need to go to that length, but I don’t have overly strong
opinions.  I think of this more like a case of “we’ve changed the API with new
errorcases that we didn’t handle before, so we’re being a little defensive to
help you avoid subtle bugs”.

> Attached is an updated patch.

Looks good, passes tests, provides value to the code.  Bumping this to ready
for committer as I no more comments to add.

cheers ./daniel