Support DCE IOV functions on macOS #258
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Oh and the change https://github.com/pythongssapi/python-gssapi/pull/258/files#diff-60f61ab7a8d1910d86d9fda2261620314edcae5894d5aaa236b821c7256badd7R125 is unrelated but clang will emit warning saying this |
Makes sense. Should be mentioned in the commit description (unless you think it warrants its own commit). |
I'll amend the commit to include this. |
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Thanks @frozencemetery for the review, I've incorporated the changes and have manually tested again and things work just fine. |
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The DCE IOV functions on macOS are not exported by any public header on the GSS.Framework. While the symbols are considered to be private they haven't changed across any macOS version since the introduction of GSS.Framework. Since the inclusion of ext_dce is still dependent on whether the symbol is present at compile time, their usage in python-gssapi is relatively safe. Provide our own copy of the definitions accordingly. The `-framework GSS.framework` has also been removed from the compiler args as clang emits a warning with these present, and it is only needed for linking. Signed-off-by: Jordan Borean <jborean93@gmail.com> [rharwood@redhat.com: C style, slight comment/commit message tweaks]
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The DCE IOV functions on macOS are not exported by any public header on
the GSS.Framework. This PR defines some macros in the C file that when
compiled against the GSS.Framework will alias the private symbols to the
ones expected by GSSAPI. While the symbols are considered to be private
they haven't changed across any macOS version since the introduction of
GSS.Framework and the inclusion of ext_dce is still dependent on whether
the symbol is present at compile time.
This allows users of this library on macOS to better interop with
Windows SSPI message encryption which typically require the IOV wrapping
functions that were previously unavailable.
This is round 2 from #210 but I'm a lot more happier with this approach as the macros are defined in the
.cfile for the sdist allowing this to work on macOS without requiring a wheel. It is also not relying ondlopen/dlsymat runtime to get the path to the GSS.Framework library which is a big plus.