RFR: 8300259: Add test coverage for processing of pending block files in signed JARs

[Weijun Wang]

On Mon, 16 Jan 2023 11:44:36 GMT, Eirik Bjorsnos <duke at openjdk.org> wrote:

> This PR adds test coverage for pending block files in signed JAR files
> 
> A signed JAR has pending block files if the block file [RSA, DSA, EC] comes before the corresponding signature file [SF] in the JAR. 
> 
> JarVerifier.processEntry supports processing of such pending block files, but this code path does not seem to be exercised by current test.
> 
> The new test PendingBlocksJar checks that signed JARs  with pending blocks are processed correctly, both for the valid and invalid cases.

Thanks for the fix. I've created https://bugs.openjdk.org/browse/JDK-8300259.

I'll run this test on some platforms before approving it. Whenever such a test fails, it's on Windows because this or that file is still opened, but I see you've used try-with-resources all the time and hopefully everything is fine.

test/jdk/java/util/jar/JarFile/PendingBlocksJar.java line 72:

> 70: 
> 71:     private static void checkSigned(File b) throws Exception {
> 72:         try(JarFile jf = new JarFile(b, true)) {

We usually add a whitespace between a keyword (`try` here) and a left parenthesis. Also lines 75, 87, 90, 109, 128, 157, 172.

test/jdk/java/util/jar/JarFile/PendingBlocksJar.java line 85:

> 83:      */
> 84:     private static File invalidate(File s) throws Exception{
> 85:         File invalid = File.createTempFile("pending-block-file-invalidated-", ".jar");

Another suggestion. We usually just create a file in the current directory and leave it there. If the test passes, all files in the current directory are cleaned up (and yes, it also helps you confirm newly created files are properly closed on Windows). Otherwise, the files are stored in a bundle (see `jtreg -retain` option) for your diagnosis. It's a little difficult to locate these files in a shared temporary directory. If the OS is not good at clean up the directory, then it's also a waste of disk space.

test/jdk/java/util/jar/JarFile/PendingBlocksJar.java line 151:

> 149:                 .generateCertPath(Arrays.asList(ks.getCertificateChain("r")));
> 150: 
> 151:         JarSigner signer = new JarSigner.Builder(pkr, cp)

There is a `Builder` constructor that takes a `PrivateKeyEntry`.

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PR: https://git.openjdk.org/jdk/pull/12009