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Forbid gen_random_uuid() with --disable-strong-random

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Previously, gen_random_uuid() would fall back to a weak random number
generator, unlike gen_random_bytes() which would just fail. And this was
not made very clear in the docs. For consistency, also make
gen_random_uuid() fail outright, if compiled with --disable-strong-random.

Re-word the error message you get with --disable-strong-random. It is also
used by pgp functions that require random salts, and now also
gen_random_uuid().

Reported by Radek Slupik.

Discussion: https://www.postgresql.org/message-id/20170101232054.10135.50528@wrigleys.postgresql.org
This commit is contained in:
Heikki Linnakangas
2017-07-03 12:10:11 +03:00
parent 647675228f
commit bf723a274c
6 changed files with 41 additions and 41 deletions
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2
contrib/pgcrypto/px.c
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@ -104,7 +104,7 @@ px_THROW_ERROR(int err)
#else
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("pg_random_bytes() is not supported by this build"),
errmsg("generating random data is not supported by this build"),
errdetail("This functionality requires a source of strong random numbers"),
errhint("You need to rebuild PostgreSQL using --enable-strong-random")));
#endif