63 lines
2.2 KiB
Plaintext
63 lines
2.2 KiB
Plaintext
This local copy of a SHA1 implementation based on the sources below.
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Why:
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- Some libraries suffer from race condition and other issues. For example see
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commit ade3108bb5b0 ("util: Fix race condition on libgcrypt initialization").
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- Fold the handling and detection of _eight_ implementations at configure
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stage and _seven_ different codepaths.
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- Have a single, uniform, code used by developers, testers and users.
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- Avoid conflicts when using software which ships with it's own SHA1 library.
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The latter of which conflicting with the one mesa is build against.
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Source:
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The SHA1 implementation is copied verbatim from the following links.
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At the time of checkout HEAD is 1.25 and 1.24 respectively.
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http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/lib/libc/hash/sha1.c?rev=HEAD
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http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/include/sha1.h?rev=HEAD
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Notes:
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- The files should not have any local changes. If there are any they should be
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clearly documented below and one should aim to upstream them where possible.
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- Files will be periodically syncronised with the respective upstream sources.
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Updates will be made regularly, but since the code is _not_ aimed as a
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cryptography solution any issues found should not be considered security ones.
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Local changes:
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- Removed __bounded__ attribute qualifiers. Unavailable on platforms targeted
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by Mesa. Upstream status: TBD (N/A ?)
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- Pick the sha1.h header from the current folder, by using "" over <> in the
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include directive. Upstream status: TBD
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- Remove unused function prototypes - SHA1End, SHA1File, SHA1FileChunk and
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SHA1Data. Upstream status: TBD
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- Use stdint.h integer types - u_int{8,16,32}_t -> uint{8,16,32}_t and
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u_int -> uint32_t, change header include. Upstream status: TBD
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- Revert sha1.c rev 1.26 change (introduce DEF_WEAK).
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Upstream status: TBD (N/A ?)
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- Add stdint.h include in sha1.h for uint*_t types. Upstream status: TBD
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- Add stddef.h include in sha1.h for size_t type. Upstream status: TBD
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- Use memset over explicit_bzero, since memset_s once isn't widely available.
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Upstream status: TBD (N/A ?)
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- Manually expand __BEGIN_DECLS/__END_DECLS and make sure that they include
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the struct declaration.
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Upstream status: TBD
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- Add non-typedef struct name.
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Upstream status: TBD
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