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https://issues.apache.org/jira/browse/VELOCITY-968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17772335#comment-17772335
]
Christopher Schultz commented on VELOCITY-968:
----------------------------------------------
Maybe
`org.apache.velocity.util.introspection.MethodMap.getBestMatch(List<Method>,
Class[])` can choose a superclass method over a subclass method if they are
otherwise equivalent?
> In Java 17+, introspection fails in many cases due to permissions
> -----------------------------------------------------------------
>
> Key: VELOCITY-968
> URL: https://issues.apache.org/jira/browse/VELOCITY-968
> Project: Velocity
> Issue Type: Bug
> Components: Engine
> Affects Versions: 1.7.x, 2.3
> Environment: Java 17
> Reporter: Christopher Schultz
> Priority: Major
>
> When running under Java 17 or later, introspection often picks an
> inaccessible method on a runtime object, which then fails when invoked.
> For example, running the example below under Java 8, the output is simple:
> {noformat}
> Cert notAfter=Wed Jan 03 12:42:32 EST 2024
> Test: Wed Jan 03 12:42:32 EST 2024
> {noformat}
> When running on Java 11 or later, we get:
> {noformat}
> Cert notAfter=Wed Jan 03 12:42:32 EST 2024
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.apache.velocity.runtime.parser.node.PropertyExecutor
> (file:.../velocity-engine-core-2.3.jar) to method
> sun.security.x509.X509CertImpl.getNotAfter()
> WARNING: Please consider reporting this to the maintainers of
> org.apache.velocity.runtime.parser.node.PropertyExecutor
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> Test: Wed Jan 03 12:42:32 EST 2024
> {noformat}
> When running on Java 17, we get:
> {noformat}
> Cert notAfter=Wed Jan 03 12:42:32 EST 2024
> Exception in thread "main" org.apache.velocity.exception.VelocityException:
> ASTIdentifier() : exception invoking method for identifier 'notAfter' in
> class sun.security.x509.X509CertImpl
> at
> org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:282)
> at
> org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
> at
> org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
> at
> org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
> at org.apache.velocity.Template.merge(Template.java:358)
> at org.apache.velocity.Template.merge(Template.java:262)
> at CertTest.main(CertTest.java:52)
> Caused by: java.lang.IllegalAccessException: class
> org.apache.velocity.runtime.parser.node.PropertyExecutor cannot access class
> sun.security.x509.X509CertImpl (in module java.base) because module java.base
> does not export sun.security.x509 to unnamed module @45ad6cad
> at
> java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:392)
> at
> java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:674)
> at java.base/java.lang.reflect.Method.invoke(Method.java:560)
> at
> org.apache.velocity.runtime.parser.node.PropertyExecutor.execute(PropertyExecutor.java:149)
> at
> org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:722)
> at
> org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:217)
> ... 6 more
> {noformat}
> It looks like Velocity is picking an inconvenient class on which to base its
> method invocation.
>
> Here is the test source.
> {noformat}
> import java.io.OutputStreamWriter;
> import java.io.StringReader;
> import java.nio.charset.StandardCharsets;
> import java.security.cert.Certificate;
> import java.security.cert.X509Certificate;
> import java.security.cert.CertificateFactory;
> import org.apache.velocity.Template;
> import org.apache.velocity.VelocityContext;
> import org.apache.velocity.app.VelocityEngine;
> import org.apache.velocity.runtime.RuntimeServices;
> import org.apache.velocity.runtime.RuntimeSingleton;
> public class CertTest {
> private static final String certText = "-----BEGIN CERTIFICATE-----\n"
> + "MIICJTCCAaygAwIBAgIIXjahgh5+v08wCgYIKoZIzj0EAwMwaTEQMA4GA1UEBhMH\n"
> + "VW5rbm93bjEQMA4GA1UECBMHVW5rbm93bjEQMA4GA1UEBxMHVW5rbm93bjEQMA4G\n"
> + "A1UEChMHVW5rbm93bjEQMA4GA1UECxMHVW5rbm93bjENMAsGA1UEAxMEdGVzdDAe\n"
> + "Fw0yMzEwMDUxNzQyMzJaFw0yNDAxMDMxNzQyMzJaMGkxEDAOBgNVBAYTB1Vua25v\n"
> + "d24xEDAOBgNVBAgTB1Vua25vd24xEDAOBgNVBAcTB1Vua25vd24xEDAOBgNVBAoT\n"
> + "B1Vua25vd24xEDAOBgNVBAsTB1Vua25vd24xDTALBgNVBAMTBHRlc3QwdjAQBgcq\n"
> + "hkjOPQIBBgUrgQQAIgNiAARluamNquFohhtrjhN6Sq+QXVlb+/1GVHg0h10iDehm\n"
> + "msRkfPkugLIwRbLIaggzFkx66QcT4oIjhvM0Q1jM7a/9BhNUWJvZMa54M3Nh+K6P\n"
> + "fzp8tOGHe2EAHibDP1KSGHCjITAfMB0GA1UdDgQWBBSLy96Os2mUo7TiKAwRlEmq\n"
> + "dzOrCDAKBggqhkjOPQQDAwNnADBkAjBx+sqV2gzUusdOvwltH7f7sp5UtZMRFKF4\n"
> + "mRcGA7buAZN/YPUGgkiUZ6ZEJmw8Dn8CMEEgm8c2WTYdO/CQ5DRBbfIt1TcpiDxk\n"
> + "0vM+YZrSctwCJhK+3h3i4X990XvjJQ3Hmw==\n"
> + "-----END CERTIFICATE-----\n"
> ;
> private static final String templateText = "Test: $cert.notAfter\n";
> public static void main(String[] args) throws Exception {
> X509Certificate cert =
> (X509Certificate)CertificateFactory.getInstance("X.509").generateCertificate(new
> java.io.ByteArrayInputStream(certText.getBytes(StandardCharsets.US_ASCII)));
> System.out.println("Cert notAfter=" + cert.getNotAfter());
> VelocityContext ctx = new VelocityContext();
> ctx.put("cert", cert); VelocityEngine ve = new VelocityEngine();
> ve.init(); RuntimeServices runtimeServices =
> RuntimeSingleton.getRuntimeServices();
> Template template = new Template();
> template.setRuntimeServices(runtimeServices);
> /// For Velocity 1.7:
> //template.setData(runtimeServices.parse(new StringReader(templateText),
> "Note Template")); // For Velocity 2.x
> template.setData(runtimeServices.parse(new StringReader(templateText),
> template)); template.initDocument(); OutputStreamWriter out = new
> OutputStreamWriter(System.out);
> template.merge(ctx, out);
> out.flush();
> }
> }
> {noformat}
> This fails in the same way running under both Velocity 2.3 and Velocity 1.7
> (with a small required source change).
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