4 Commits (f07a3039c72b4a7afbe2b898fd1194575d13c37e)

Author	SHA1	Message	Date
Michael Paquier	a3ab7a707d	Fix corner case with 16kB-long decompression in pgcrypto, take 2 ... A compressed stream may end with an empty packet. In this case decompression finishes before reading the empty packet and the remaining stream packet causes a failure in reading the following data. This commit makes sure to consume such extra data, avoiding a failure when decompression the data. This corner case was reproducible easily with a data length of 16kB, and existed since e94dd6a. A cheap regression test is added to cover this case based on a random, incompressible string. The first attempt of this patch has allowed to find an older failure within the compression logic of pgcrypto, fixed by b9b6105. This involved SLES 15 with z390 where a custom flavor of libz gets used. Bonus thanks to Mark Wong for providing access to the specific environment. Reported-by: Frank Gagnepain Author: Kyotaro Horiguchi, Michael Paquier Reviewed-by: Tom Lane Discussion: https://postgr.es/m/16476-692ef7b84e5fb893@postgresql.org Backpatch-through: 9.5	5 years ago
Michael Paquier	38f60f174e	Revert "Fix corner case with PGP decompression in pgcrypto" ... This reverts commit 9e10898, after finding out that buildfarm members running SLES 15 on z390 complain on the compression and decompression logic of the new test: pipistrelles, barbthroat and steamerduck. Those hosts are visibly using hardware-specific changes to improve zlib performance, requiring more investigation. Thanks to Tom Lane for the discussion. Discussion: https://postgr.es/m/20200722093749.GA2564@paquier.xyz Backpatch-through: 9.5	5 years ago
Michael Paquier	9e108984fb	Fix corner case with PGP decompression in pgcrypto ... A compressed stream may end with an empty packet, and PGP decompression finished before reading this empty packet in the remaining stream. This caused a failure in pgcrypto, handling this case as corrupted data. This commit makes sure to consume such extra data, avoiding a failure when decompression the entire stream. This corner case was reproducible with a data length of 16kB, and existed since its introduction in e94dd6a. A cheap regression test is added to cover this case. Thanks to Jeff Janes for the extra investigation. Reported-by: Frank Gagnepain Author: Kyotaro Horiguchi, Michael Paquier Discussion: https://postgr.es/m/16476-692ef7b84e5fb893@postgresql.org Backpatch-through: 9.5	5 years ago
Bruce Momjian	e94dd6ab91	Add missing pgcrypto files from previous commit.	20 years ago