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