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markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
commit fc63185a77c678b4adbb106e1302a808cc980bd3
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Wed Nov 20 20:20:59 2024 +0000
Fix BZ 69447 notFoundClassResources should allow for external resources
---
.../catalina/loader/WebappClassLoaderBase.java | 64 +++++++++++++---------
webapps/docs/changelog.xml | 6 ++
2 files changed, 44 insertions(+), 26 deletions(-)
diff --git a/java/org/apache/catalina/loader/WebappClassLoaderBase.java
b/java/org/apache/catalina/loader/WebappClassLoaderBase.java
index 3da0ab4898..b06fefa61b 100644
--- a/java/org/apache/catalina/loader/WebappClassLoaderBase.java
+++ b/java/org/apache/catalina/loader/WebappClassLoaderBase.java
@@ -783,6 +783,12 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
checkStateForClassLoading(name);
+ if (name == null) {
+ throw new ClassNotFoundException("null");
+ }
+
+ String path = binaryNameToPath(name, true);
+
// (1) Permission to define this class when using a SecurityManager
if (securityManager != null) {
int i = name.lastIndexOf('.');
@@ -808,25 +814,14 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
if (log.isTraceEnabled()) {
log.trace(" findClassInternal(" + name + ")");
}
- try {
- if (securityManager != null) {
- PrivilegedAction<Class<?>> dp = new
PrivilegedFindClassByName(name);
- clazz = AccessController.doPrivileged(dp);
- } else {
- clazz = findClassInternal(name);
- }
- } catch (AccessControlException ace) {
- log.warn(sm.getString("webappClassLoader.securityException",
name, ace.getMessage()), ace);
- throw new ClassNotFoundException(name, ace);
- } catch (RuntimeException e) {
- if (log.isTraceEnabled()) {
- log.trace(" -->RuntimeException Rethrown", e);
- }
- throw e;
- }
- if (clazz == null && hasExternalRepositories) {
+ if (!notFoundClassResources.contains(path)) {
try {
- clazz = super.findClass(name);
+ if (securityManager != null) {
+ PrivilegedAction<Class<?>> dp = new
PrivilegedFindClassByName(name);
+ clazz = AccessController.doPrivileged(dp);
+ } else {
+ clazz = findClassInternal(name);
+ }
} catch (AccessControlException ace) {
log.warn(sm.getString("webappClassLoader.securityException", name,
ace.getMessage()), ace);
throw new ClassNotFoundException(name, ace);
@@ -836,17 +831,32 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
}
throw e;
}
+ if (clazz == null && hasExternalRepositories) {
+ try {
+ clazz = super.findClass(name);
+ } catch (AccessControlException ace) {
+
log.warn(sm.getString("webappClassLoader.securityException", name,
ace.getMessage()), ace);
+ throw new ClassNotFoundException(name, ace);
+ } catch (RuntimeException e) {
+ if (log.isTraceEnabled()) {
+ log.trace(" -->RuntimeException Rethrown", e);
+ }
+ throw e;
+ }
+ }
}
} catch (ClassNotFoundException e) {
if (log.isTraceEnabled()) {
log.trace(" --> Passing on ClassNotFoundException");
}
+ notFoundClassResources.add(path);
throw e;
}
if (clazz == null) {
if (log.isTraceEnabled()) {
log.trace(" --> Returning ClassNotFoundException");
}
+ notFoundClassResources.add(path);
throw new ClassNotFoundException(name);
}
@@ -2195,17 +2205,23 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
}
String path = binaryNameToPath(name, true);
+ return findClassInternal(name, path);
+ }
+
+
+ /*
+ * The use of getPackage() is appropriate given that the code is checking
if the package is sealed. Therefore,
+ * parent class loaders need to be checked.
+ */
+ @SuppressWarnings("deprecation")
+ private Class<?> findClassInternal(String name, String path) {
ResourceEntry entry = resourceEntries.get(path);
WebResource resource = null;
if (entry == null) {
- if (notFoundClassResources.contains(path)) {
- return null;
- }
resource = resources.getClassLoaderResource(path);
if (!resource.exists()) {
- notFoundClassResources.add(path);
return null;
}
@@ -2238,14 +2254,10 @@ public abstract class WebappClassLoaderBase extends
URLClassLoader
}
if (resource == null) {
- if (notFoundClassResources.contains(path)) {
- return null;
- }
resource = resources.getClassLoaderResource(path);
}
if (!resource.exists()) {
- notFoundClassResources.add(path);
return null;
}
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 34a5894ca4..958c4c34a3 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -155,6 +155,12 @@
<code>Cache-Control</code> headers in the <code>ExpiresFilter</code>.
Based on pull request <pr>777</pr> by Chenjp. (markt)
</fix>
+ <fix>
+ <bug>69447</bug>: Update the support for caching classes the web
+ application class loader cannot find to take account of classes loaded
+ from external repositories. Prior to this fix, these classes could be
+ incorrectly marked as not found. (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="Coyote">
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