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When comparing two unsigned values you can't just subtract
them.
Imagine you are comparing: "uint32_t u1" and "uint32_t u2". If you use
"u1 - u2" and u2 is zero, then the signed integer result will depend
on the top bit of u1.
This error occurs in a few places in Samba. For DRS replication it
resulted in corrupt uptodateness vectors.
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This can be used in many places that deal with GUIDs
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This will simplify many of the places that deal with NDR formatted
GUIDs
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Rather than have a repeat of the bugs we found at the plugfest where
hexidecimal strings must be in upper or lower case in particular
places, ensure that each caller chooses which case they want.
This reverts most of the callers back to upper case, as things were
before tridge's patch. The critical call in the extended DN code is
of course handled in lower case.
Andrew Bartlett
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The memory allocations here are wasteful, but they do nicely ensure we
cannot walk off the end of the DATA_BLOB that might be a string, or
might be binary and might not be NULL terminated.
Andrew Bartlett
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metze
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metze
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The reason for this new function is to ensure the length is not
discarded when the input is a ldb_val (aka DATA_BLOB) in ldb.
Andrew Bartlett
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