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Use the padding provided by OpenSSL instead of doing it ourselves.
The internal implementation was once applicable to the non-OpenSSL
code paths, but those have since been removed. The padding algorithm
is still the same.
The OpenSSL padding implementation is stricter than the previous
internal one: Bad padding during decryption is now an error, and
encryption without padding now requires the input size to be a
multiple of the block size, otherwise it is also an error.
Previously, these cases silently proceeded, in spite of the
documentation saying otherwise.
Add some test cases about this, too. (The test cases are in
rijndael.sql, but they apply to all encryption algorithms.)
Reviewed-by: Jacob Champion <pchampion@vmware.com>
Reviewed-by: Nathan Bossart <nathandbossart@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/ba94c26b-0c58-c97e-7a44-f44e08b4cca2%40enterprisedb.com
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PX_OWN_ALLOC was intended as a way to disable the use of palloc(), and
over the time new palloc() or equivalent calls have been added like in
32984d8, making this extra layer losing its original purpose. This
simplifies on the way some code paths to use palloc0() rather than
palloc() followed by memset(0).
Author: Daniel Gustafsson
Discussion: https://postgr.es/m/A5BFAA1A-B2E8-4CBC-895E-7B1B9475A527@yesql.se
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The basic rule we follow here is to always first include 'postgres.h' or
'postgres_fe.h' whichever is applicable, then system header includes and
then Postgres header includes. In this, we also follow that all the
Postgres header includes are in order based on their ASCII value. We
generally follow these rules, but the code has deviated in many places.
This commit makes it consistent just for contrib modules. The later
commits will enforce similar rules in other parts of code.
Author: Vignesh C
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/CALDaNm2Sznv8RR6Ex-iJO6xAdsxgWhCoETkaYX=+9DW3q0QCfA@mail.gmail.com
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This includes removing tabs after periods in C comments, which was
applied to back branches, so this change should not effect backpatching.
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Specifically, on-stack memset() might be removed, so:
* Replace memset() with px_memset()
* Add px_memset to copy_crlf()
* Add px_memset to pgp-s2k.c
Patch by Marko Kreen
Report by PVS-Studio
Backpatch through 8.4.
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pgp.h used to require including mbuf.h and px.h first. Include those in
pgp.h, so that it can be used without prerequisites. Remove mbuf.h
inclusions in .c files where mbuf.h features are not used
directly. (px.h was always used.)
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provided by Andrew.
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be more wary about having a value for BYTE_ORDER, clean up randomly-
chosen ways of including Postgres core headers.
Marko Kreen and Tom Lane
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