RFR: 8303465: KeyStore of type KeychainStore, provider Apple does not show all trusted certificates [v3]

[Matthias Baesken]

On Wed, 17 May 2023 08:06:56 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> With this PR we try to be better in loading certificates from the MacOS Keychain into a JDK Trust store.
>> 
>> The current implementation after JDK-8278449 would only load/trust certificates from an identity (with private key available) and certificates that have explicit trust set in the user domain (as shown by security dump-trust-settings). This, however is not sufficient and does not match the MacOS system behavior, e.g. if you compare with tools like curl or Safari.
>> 
>> This change does the following:
>> 1. The native method that reads trust settings will call the API SecTrustSettingsCopyTrustSettings on a certificate for both, User and Admin domain.
>> 2. No trust settings will be reported as "inputTrust" being null. If the certificate is trusted with no specific records, "inputTrust" will be an empty list.
>> 3. The Java Method to add a certificate now checks for "self signed" certificate not only by checking whether it was signed with its own key but it must also not be a root certificate that can be used to sign other certificates. This is done by inspecting the key usage extension.
>> 4. We now trust certificates that are either "real" self-signed certificates or certificates that have an explicit trust entry with no sub-records that would deny the certificate for any purpose.
>> 5. The check for double aliases has been augmented by comparing whether the certificate to be added is the same as the one that is already present. This can happen if a certificate is contained in both, the user and the system keychain, for instance.
>> 
>> I have added a test that verifies whether certificates that should be trusted from "security dump-trust-settings" are contained in the keystore and those that should be disallowed are absent.
>
> Christoph Langer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Check return code of SecTrustSettingsCopyTrustSettings and address review comments

So please check the CFArrayGetValueAtIndex usage, but otherwise looks okay to me now, thanks for the adjustments.

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Marked as reviewed by mbaesken (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13945#pullrequestreview-1430620036