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schannel: Work around typo in macro from classic MinGW include #7580

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@jay jay commented Aug 17, 2021

  • Define ALG_CLASS_DHASH (the typo from the include) to ALG_CLASS_HASH.

Prior to this change the build error was noted but it was expected the
user would update to the latest classic MinGW headers to fix it.

Ref: #2924

Closes #xxxx

/cc @MarcelRaad

@jay jay added the build label Aug 17, 2021
lib/vtls/schannel.c Outdated Show resolved Hide resolved
@jay jay force-pushed the fix_classic_mingw_build_error branch from 5940b7e to 1aece8b Aug 17, 2021
@@ -284,8 +290,6 @@ get_alg_id_by_name(char *name)
defined(__MINGW64_VERSION_MAJOR) || \
(__W32API_MAJOR_VERSION > 5) || \
/* CALG_TLS1PRF has a syntax error in MinGW's w32api up to version 5.0,
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@MarcelRaad MarcelRaad Aug 17, 2021

I don't understand. What was the build error? The preprocessor condition here was meant to avoid build errors. Or was the problem the lack of this CIPHEROPTION? Then this preprocessor condition should be deleted.

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@jay jay Aug 17, 2021

It's the same build error as described in the bug. The current fix in schannel does not work here because __W32API_MAJOR_VERSION is undefined. It is defined in w32api.h but that is not included by any other mingw include. I could get it working with:

#ifdef __MINGW32__
#include <w32api.h>

However rather than do that to fix the version check the latest iteration of my patch removes it and compensates for the typo instead.

- Define ALG_CLASS_DHASH (the typo from the include) to ALG_CLASS_HASH.

Prior to this change there was an incomplete fix to ignore the
CALG_TLS1PRF macro on those versions of MinGW where it uses the
ALG_CLASS_DHASH typoed macro.

Ref: 48cf45c
Ref: curl#2924

Closes #xxxx
@jay jay force-pushed the fix_classic_mingw_build_error branch from 1aece8b to daf41dd Aug 17, 2021
@jay jay closed this in 7d76be3 Aug 21, 2021
@jay jay deleted the fix_classic_mingw_build_error branch Aug 21, 2021
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3 participants