Author: markt
Date: Sat Apr 12 20:15:17 2014
New Revision: 1586891

URL: http://svn.apache.org/r1586891
Log:
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56334
Correct double backslash escaping in attributes

Added:
    tomcat/tc7.0.x/trunk/test/webapp-3.0/bug5nnnn/bug56334.jspx
      - copied, changed from r1586890, 
tomcat/trunk/test/webapp/bug5nnnn/bug56334.jspx
Modified:
    tomcat/tc7.0.x/trunk/   (props changed)
    tomcat/tc7.0.x/trunk/java/org/apache/jasper/compiler/ELParser.java
    tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestELParser.java
    tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestParser.java
    tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml

Propchange: tomcat/tc7.0.x/trunk/
------------------------------------------------------------------------------
  Merged /tomcat/trunk:r1586890

Modified: tomcat/tc7.0.x/trunk/java/org/apache/jasper/compiler/ELParser.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/jasper/compiler/ELParser.java?rev=1586891&r1=1586890&r2=1586891&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/java/org/apache/jasper/compiler/ELParser.java 
(original)
+++ tomcat/tc7.0.x/trunk/java/org/apache/jasper/compiler/ELParser.java Sat Apr 
12 20:15:17 2014
@@ -209,7 +209,7 @@ public class ELParser {
                 prev = 0;
                 if (ch == '\\') {
                     buf.append('\\');
-                    prev = '\\';
+                    continue;
                 } else if (ch == '$'
                         || (!isDeferredSyntaxAllowedAsLiteral && ch == '#')) {
                     buf.append(ch);
@@ -468,18 +468,18 @@ public class ELParser {
 
         @Override
         public void visit(Function n) throws JasperException {
-            output.append(n.getOriginalText());
+            output.append(Generator.escape(n.getOriginalText()));
             output.append('(');
         }
 
         @Override
         public void visit(Text n) throws JasperException {
-            output.append(n.getText());
+            output.append(Generator.escape(n.getText()));
         }
 
         @Override
         public void visit(ELText n) throws JasperException {
-            output.append(n.getText());
+            output.append(Generator.escape(n.getText()));
         }
     }
 }

Modified: tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestELParser.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestELParser.java?rev=1586891&r1=1586890&r2=1586891&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestELParser.java 
(original)
+++ tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestELParser.java Sat 
Apr 12 20:15:17 2014
@@ -170,6 +170,18 @@ public class TestELParser {
     }
 
 
+    @Test
+    public void testEscape01() throws JasperException {
+        doTestParser("${'\\\\'}");
+    }
+
+
+    @Test
+    public void testEscape02() throws JasperException {
+        doTestParser("\\\\x${'\\\\'}");
+    }
+
+
     private void doTestParser(String input) throws JasperException {
         Nodes nodes = ELParser.parse(input, false);
 

Modified: tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestParser.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestParser.java?rev=1586891&r1=1586890&r2=1586891&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestParser.java 
(original)
+++ tomcat/tc7.0.x/trunk/test/org/apache/jasper/compiler/TestParser.java Sat 
Apr 12 20:15:17 2014
@@ -375,6 +375,37 @@ public class TestParser extends TomcatBa
                 result.contains("[4: [data-test]: [window.alert('Hello 'World 
<&>'!')]]"));
     }
 
+    @Test
+    public void testBug56334() throws Exception {
+        Tomcat tomcat = getTomcatInstance();
+
+        File appDir = new File("test/webapp");
+        // app dir is relative to server home
+        StandardContext ctxt = (StandardContext) tomcat.addWebapp(null,
+                "/test", appDir.getAbsolutePath());
+
+        // This test needs the JSTL libraries
+        File lib = new File("webapps/examples/WEB-INF/lib");
+        ctxt.setAliases("/WEB-INF/lib=" + lib.getCanonicalPath());
+
+        tomcat.start();
+
+        ByteChunk res = getUrl("http://localhost:"; + getPort() +
+                "/test/bug5nnnn/bug56334.jspx");
+
+        String result = res.toString();
+
+        System.out.println(result);
+
+        // NOTE: The expected values must themselves be \ escaped below
+        Assert.assertTrue(result, result.contains("\\?resize01"));
+        Assert.assertTrue(result, result.contains("<set 
data-value=\"\\\\?resize02a\"/>"));
+        Assert.assertTrue(result, result.contains("<set 
data-value=\"\\\\x\\\\?resize02b\"/>"));
+        Assert.assertTrue(result, result.contains("<set 
data-value=\"\\?resize03a\"/>"));
+        Assert.assertTrue(result, result.contains("<set 
data-value=\"\\x\\?resize03b\"/>"));
+        Assert.assertTrue(result, result.contains("<\\?resize04/>"));
+    }
+
     /** Assertion for text printed by tags:echo */
     private static void assertEcho(String result, String expected) {
         assertTrue(result.indexOf("<p>" + expected + "</p>") > 0);

Copied: tomcat/tc7.0.x/trunk/test/webapp-3.0/bug5nnnn/bug56334.jspx (from 
r1586890, tomcat/trunk/test/webapp/bug5nnnn/bug56334.jspx)
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/test/webapp-3.0/bug5nnnn/bug56334.jspx?p2=tomcat/tc7.0.x/trunk/test/webapp-3.0/bug5nnnn/bug56334.jspx&p1=tomcat/trunk/test/webapp/bug5nnnn/bug56334.jspx&r1=1586890&r2=1586891&rev=1586891&view=diff
==============================================================================
    (empty)

Modified: tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml?rev=1586891&r1=1586890&r2=1586891&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml Sat Apr 12 20:15:17 2014
@@ -80,6 +80,14 @@
       </fix>
     </changelog>
   </subsection>
+  <subsection name="Jasper">
+    <changelog>
+      <fix>
+        <bug>56334</bug>: Fix a regression in the handling of back-slash
+        escaping introduced by the fix for <bug>55735</bug>. (markt)
+      </fix>
+    </changelog>
+  </subsection>
   <subsection name="Cluster">
     <changelog>
       <fix>



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