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From rj...@apache.org
Subject svn commit: r1726666 - in /tomcat/tc8.0.x/trunk: ./ java/org/apache/catalina/loader/WebappClassLoaderBase.java
Date Mon, 25 Jan 2016 18:50:24 GMT
Author: rjung
Date: Mon Jan 25 18:50:24 2016
New Revision: 1726666

URL: http://svn.apache.org/viewvc?rev=1726666&view=rev
Log:
Split filter() in class loading and resource
loading cases. Deprecate unified filter(String)
method and suggest using filter(String, boolean)
instead.

For now the patterns for permit and deny are the
same (except for replacing the class name dots
by resource path slashes).

Backport of r1726648 from trunk.

Modified:
    tomcat/tc8.0.x/trunk/   (props changed)
    tomcat/tc8.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoaderBase.java

Propchange: tomcat/tc8.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Mon Jan 25 18:50:24 2016
@@ -1 +1 @@
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 39,1720445,1720448,1720462,1720506,1720652,1720654-1720655,1720711,1720752,1720769,1720776,1720804,1720815,1721303,1721307,1721311,1721314,1721447,1721528,1721539,1721812,1721817,1721830,1721860,1721866,1721881,1721887,1722205,1722292,1722399,1722453,1722455,1722522,1722526,1722532,1722548,1722574,1722583,1722585,1722799,1722807,1722824,1722828-1722829,1722831,1722859,1722902,1722905,1722923,1722939,1722945,1722996,1723068,1723127,1723155,1723250,1723316-1723318,1723368,1723371,1723375,1723377,1723380,1723410,1723414,1723437,1723484,1723486,1723493-1723494,1723500,1723552,1723554,1723683,1723707,1723736,1724012,1724252,1724325,1724427-1724428,1724433,1724673,1724788,1724863,1724900,1724997,1725113,1725126-1725127,1725150,1725165,1725183,1725199,1725202,1725204,1725207,1725263-1725264,1725266,1725278,1725282,1725405,1725599,1725601,1725635,1725646,1725649-1725652,1725694,1725696-1725697,1725816,1725851,1725906-1725907,1725910,1725914,1725920,1725926,1726177,1726202,1726628,1726632,17
 26637,1726639,1726648

Modified: tomcat/tc8.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoaderBase.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoaderBase.java?rev=1726666&r1=1726665&r2=1726666&view=diff
==============================================================================
--- tomcat/tc8.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoaderBase.java (original)
+++ tomcat/tc8.0.x/trunk/java/org/apache/catalina/loader/WebappClassLoaderBase.java Mon Jan
25 18:50:24 2016
@@ -274,22 +274,42 @@ public abstract class WebappClassLoaderB
 
     /**
      * Regular expression of package names which are not allowed to be loaded
-     * from a webapp class loader without delegating first.
+     * from a webapp class loader as classes without delegating first.
      */
-    private final Matcher packageTriggersDeny = Pattern.compile(
-            "^(?:javax[./](?:el|security[./]auth[./]message|servlet|websocket)|" +
-            "org[./]apache[./](?:catalina|coyote|el|jasper|juli|naming|tomcat))[./]"
+    private final Matcher classPackageTriggersDeny = Pattern.compile(
+            "^(?:javax\\.(?:el|security\\.auth\\.message|servlet|websocket)|" +
+            "org\\.apache\\.(?:catalina|coyote|el|jasper|juli|naming|tomcat))\\."
             ).matcher("");
 
 
     /**
+     * Regular expression of package names which are not allowed to be loaded
+     * from a webapp class loader as resources without delegating first.
+     */
+    private final Matcher resourcePackageTriggersDeny = Pattern.compile(
+            "^(?:javax/(?:el|security/auth/message|servlet|websocket)|" +
+            "org/apache/(?:catalina|coyote|el|jasper|juli|naming|tomcat))/"
+            ).matcher("");
+
+
+    /**
+     * Regular expression of package names which are allowed to be loaded from a
+     * webapp class loader as classes without delegating first.
+     * These take precedence over those set via {@link #classPackageTriggersDeny}.
+     */
+    private final Matcher classPackageTriggersPermit =
+            Pattern.compile("^(?:javax\\.servlet\\.jsp\\.jstl|" +
+                    "org\\.apache\\.tomcat\\.jdbc)\\.").matcher("");
+
+
+    /**
      * Regular expression of package names which are allowed to be loaded from a
-     * webapp class loader without delegating first and override any set by
-     * {@link #packageTriggersDeny}.
+     * webapp class loader as resources without delegating first.
+     * These take precedence over those set via {@link #resourcePackageTriggersDeny}.
      */
-    private final Matcher packageTriggersPermit =
-            Pattern.compile("^(?:javax[./]servlet[./]jsp[./]jstl|" +
-                    "org[./]apache[./]tomcat[./]jdbc)[./]").matcher("");
+    private final Matcher resourcePackageTriggersPermit =
+            Pattern.compile("^(?:javax/servlet/jsp/jstl|" +
+                    "org/apache/tomcat/jdbc)/").matcher("");
 
 
     /**
@@ -1035,7 +1055,7 @@ public abstract class WebappClassLoaderB
 
         URL url = null;
 
-        boolean delegateFirst = delegate || filter(name);
+        boolean delegateFirst = delegate || filter(name, false);
 
         // (1) Delegate to parent if requested
         if (delegateFirst) {
@@ -1102,7 +1122,7 @@ public abstract class WebappClassLoaderB
             return (stream);
         }
 
-        boolean delegateFirst = delegate || filter(name);
+        boolean delegateFirst = delegate || filter(name, false);
 
         // (1) Delegate to parent if requested
         if (delegateFirst) {
@@ -1280,7 +1300,7 @@ public abstract class WebappClassLoaderB
                 }
             }
 
-            boolean delegateLoad = delegate || filter(name);
+            boolean delegateLoad = delegate || filter(name, true);
 
             // (1) Delegate to our parent if requested
             if (delegateLoad) {
@@ -2771,28 +2791,54 @@ public abstract class WebappClassLoaderB
      * Filter classes.
      *
      * @param name class name
-     * @return true if the class should be filtered
+     * @param isClassName <code>true</code> if name is a class name,
+     *                <code>false</code> if name is a resource name
+     * @return <code>true</code> if the class should be filtered
      */
-    protected boolean filter(String name) {
+    protected boolean filter(String name, boolean isClassName) {
 
         if (name == null)
             return false;
 
         synchronized(packageTriggerLock) {
-            packageTriggersPermit.reset(name);
-            if (packageTriggersPermit.lookingAt()) {
-                return false;
-            }
-            packageTriggersDeny.reset(name);
-            if (packageTriggersDeny.lookingAt()) {
-                return true;
+            if (isClassName) {
+                classPackageTriggersPermit.reset(name);
+                if (classPackageTriggersPermit.lookingAt()) {
+                    return false;
+                }
+                classPackageTriggersDeny.reset(name);
+                if (classPackageTriggersDeny.lookingAt()) {
+                    return true;
+                }
+            } else {
+                resourcePackageTriggersPermit.reset(name);
+                if (resourcePackageTriggersPermit.lookingAt()) {
+                    return false;
+                }
+                resourcePackageTriggersDeny.reset(name);
+                if (resourcePackageTriggersDeny.lookingAt()) {
+                    return true;
+                }
             }
         }
-
         return false;
     }
 
 
+    /**
+     * Filter classes.
+     *
+     * @param name class name
+     * @return <code>true</code> if the class should be filtered
+     * @deprecated Use {@link #filter(String, boolean)}.
+     *             Unused. Will be removed in Tomcat 9 onwards.
+     */
+    @Deprecated
+    protected boolean filter(String name) {
+        return filter(name, true) || filter(name, false);
+    }
+
+
     /**
      * Unused.
      *



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