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Use BIO_{get,set}_app_data instead of BIO_{get,set}_data.

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We should have done it this way all along, but we accidentally got
away with using the wrong BIO field up until OpenSSL 3.2.  There,
the library's BIO routines that we rely on use the "data" field
for their own purposes, and our conflicting use causes assorted
weird behaviors up to and including core dumps when SSL connections
are attempted.  Switch to using the approved field for the purpose,
i.e. app_data.

While at it, remove our configure probes for BIO_get_data as well
as the fallback implementation.  BIO_{get,set}_app_data have been
there since long before any OpenSSL version that we still support,
even in the back branches.

Also, update src/test/ssl/t/001_ssltests.pl to allow for a minor
change in an error message spelling that evidently came in with 3.2.

Tristan Partin and Bo Andreson.  Back-patch to all supported branches.

Discussion: https://postgr.es/m/CAN55FZ1eDDYsYaL7mv+oSLUij2h_u6hvD4Qmv-7PK7jkji0uyQ@mail.gmail.com
This commit is contained in:
Tom Lane
2023-11-28 12:34:03 -05:00
parent 10a59925a3
commit c82207a548
8 changed files with 11 additions and 27 deletions
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1
meson.build
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@ -1285,7 +1285,6 @@ if sslopt in ['auto', 'openssl']
# doesn't have these OpenSSL 1.1.0 functions. So check for individual
# functions.
['OPENSSL_init_ssl'],
['BIO_get_data'],
['BIO_meth_new'],
['ASN1_STRING_get0_data'],
['HMAC_CTX_new'],