ssl context

[rashley-iqt]

Adds a method allowing users to create an ssl.SSLContext in addition to a PyOpenSSL.SSLContext as discussed in issue #20.

[rashley-iqt]

@vog have you had a chance to review this yet?

[vog]

Sorry for the delay, I'll review your contribution as soon as possible.

[vog]

I believe there's a typo in line 98, where the function is called under its first name instead of its renamed name.

[rashley-iqt]

fixed that typo

[vog]

Thanks for fixing!

Another question: Why do you suppress the automatic deletion of the temporary file, just to re-establish it afterwards?

with NamedTemporaryFile(delete=False) as c:
    try:
       FOO(c)
    finally:
        os.remove(c.name)

Can't this be simplified to this?

with NamedTemporaryFile() as c:
    FOO(c)

Moreover, a small coding style issue. Please add the missing space after the last comma:

from OpenSSL.crypto import load_pkcs12, dump_certificate, dump_privatekey,FILETYPE_PEM

New:

from OpenSSL.crypto import load_pkcs12, dump_certificate, dump_privatekey, FILETYPE_PEM

[rashley-iqt]

The suppression of automatic deletion of the temp file was done because closing the file will trigger that deletion. For the case here i needed to be able to:

• open the file for writing
• write to the file
• flush the buffer
• re-open for reading
  I was worried that if i just opened the file in read/write mode i wouldn't necessarily get clean data out of it, so it seemed less brittle to close and re-open, enforcing the deletion in a finally block.

[rashley-iqt]

@vog do I need to make any other changes here? I think I got everything unless you disagree about the implicit delete.

[vog]

I'm pretty sure that flushing (without closing) would have been sufficient to get a clean read afterwards.

However, I don't see a flaw in your approach, either, apart from 4 extra lines of code (try, finally, close, delete).

So I'm merging this as-is. Thanks again for your contribution!

[vog]

I just published a new release requests-pkcs12 1.9 containing your improvement.

Feel free to add something to the README, if you feel that we should make the additional function more visible (e.g. I'm not sure what other projects like httpx demand from using an additional library. Right now, to an outsider that function migh look like an undocumented purely internal implementation detail, on whose existence one should not rely.)