Fix broken pccsadmin command with latest pyOpenSSL and use more pycryptography #481
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The pyopenssl 24.3.0 removed the CRL object and its related methods. pccsadmin was already using the pycryptography CRL object for the verification task, so fully switch to use it for loading the CRL to begin with. Signed-off-by: Daniel P. Berrangé <[email protected]>
pyopenssl docs are indicating that the 'crypto' module is liable to see further deprecation, suggesting use of pycryptography instead. pccsadmin code already uses pycryptography for CRLs, so extend this to use it for loading certificates too. They are converted back to pyopenssl objects for verification. Signed-off-by: Daniel P. Berrangé <[email protected]>
The only part of pccsadmin that still needs pyopenssl is certificate verification. As of pycryptography 45.0.0, there are sufficient APIs available to replace the remaining usage of pyopenssl. Since new pycryptography is still not widely available in distros, keep pyopenssl code as a fallback. Signed-off-by: Daniel P. Berrangé <[email protected]>
RHEL does not ship pyopenssl, however, the pycryptography that is included is also too old to support certificate verification. Add a further fallback that can invoke the 'openssl' command line tool to verify certificates. Signed-off-by: Daniel P. Berrangé <[email protected]>
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The pyOpenSSL release 24.3.0 has deleted all the CRL API functionality from its codebase. Their recommendatino is to use the equivalent APIs from pycryptography. pccsadmin is already using pycryptography to do the CRL verification, but was using pyOpenSSL to load the CRL and is thus broken on modern distros.
Furthermore pyOpenSSL docs indicate that they're considering deprecating the entire 'crypto' module, again with the recommendation to use pycryptography instead.
This set of patches does the following