* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=52384
  Do not fail in Parameter parsing when debug logging is enabled.
  Also do not flag extra '&' as errors.
      http://svn.apache.org/viewvc?rev=1224659&view=rev



git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc5.5.x/trunk@1228191 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/STATUS.txt b/STATUS.txt
index e7462aa..693159a 100644
--- a/STATUS.txt
+++ b/STATUS.txt
@@ -24,12 +24,6 @@
 PATCHES ACCEPTED TO BACKPORT FROM TRUNK/OTHER:
   [ start all new proposals below, under PATCHES PROPOSED. ]
 
-* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=52384
-  Do not fail in Parameter parsing when debug logging is enabled.
-  Also do not flag extra '&' as errors.
-  http://svn.apache.org/viewvc?rev=1224659&view=rev
-  +1: kkolinko, rjung, jim
-  -1:
 
 PATCHES PROPOSED TO BACKPORT:
   [ New proposals should be added at the end of the list ]
diff --git a/connectors/util/java/org/apache/tomcat/util/http/LocalStrings.properties b/connectors/util/java/org/apache/tomcat/util/http/LocalStrings.properties
index 7d7ff06..815751d 100644
--- a/connectors/util/java/org/apache/tomcat/util/http/LocalStrings.properties
+++ b/connectors/util/java/org/apache/tomcat/util/http/LocalStrings.properties
@@ -17,6 +17,7 @@
 parameters.copyFail=Failed to create copy of original parameter values for debug logging purposes
 parameters.decodeFail.debug=Character decoding failed. Parameter [{0}] with value [{1}] has been ignored.
 parameters.decodeFail.info=Character decoding failed. Parameter [{0}] with value [{1}] has been ignored. Note that the name and value quoted here may be corrupted due to the failed decoding. Use debug level logging to see the original, non-corrupted values.
+parameters.emptyChunk=Empty parameter chunk ignored
 parameters.invalidChunk=Invalid chunk starting at byte [{0}] and ending at byte [{1}] with a value of [{2}] ignored
 parameters.maxCountFail=More than the maximum number of request parameters (GET plus POST) for a single request ([{0}]) were detected. Any parameters beyond this limit have been ignored. To change this limit, set the maxParameterCount attribute on the Connector.
 parameters.multipleDecodingFail=Character decoding failed. A total of [{0}] failures were detected but only the first was logged. Enable debug level logging for this logger to log all failures.
diff --git a/connectors/util/java/org/apache/tomcat/util/http/Parameters.java b/connectors/util/java/org/apache/tomcat/util/http/Parameters.java
index 79a1a17..e1b30f5 100644
--- a/connectors/util/java/org/apache/tomcat/util/http/Parameters.java
+++ b/connectors/util/java/org/apache/tomcat/util/http/Parameters.java
@@ -315,7 +315,17 @@
             }
             
             if (nameEnd <= nameStart ) {
+                if (valueStart == -1) {
+                    // &&
+                    if (log.isDebugEnabled()) {
+                        log.debug(sm.getString("parameters.emptyChunk"));
+                    }
+                    // Do not flag as error
+                    continue;
+                }
+                // &=foo&
                 if (log.isInfoEnabled()) {
+
                     if (valueEnd >= nameStart && log.isDebugEnabled()) {
                         String extract = null;
                         try {
@@ -342,7 +352,11 @@
             }
             
             tmpName.setBytes(bytes, nameStart, nameEnd - nameStart);
-            tmpValue.setBytes(bytes, valueStart, valueEnd - valueStart);
+            if (valueStart >= 0) {
+                tmpValue.setBytes(bytes, valueStart, valueEnd - valueStart);
+            } else {
+                tmpValue.setBytes(bytes, 0, 0);
+            }
 
             // Take copies as if anything goes wrong originals will be
             // corrupted. This means original values can be logged.
@@ -350,7 +364,11 @@
             if (log.isDebugEnabled()) {
                 try {
                     origName.append(bytes, nameStart, nameEnd - nameStart);
-                    origValue.append(bytes, valueStart, valueEnd - valueStart);
+                    if (valueStart >= 0) {
+                        origValue.append(bytes, valueStart, valueEnd - valueStart);
+                    } else {
+                        origValue.append(bytes, 0, 0);
+                    }
                 } catch (IOException ioe) {
                     // Should never happen...
                     log.error(sm.getString("parameters.copyFail"), ioe);
@@ -367,11 +385,15 @@
                 tmpName.setCharset(charset);
                 name = tmpName.toString();
 
-                if (decodeValue) {
-                    urlDecode(tmpValue);
+                if (valueStart >= 0) {
+                    if (decodeValue) {
+                        urlDecode(tmpValue);
+                    }
+                    tmpValue.setCharset(charset);
+                    value = tmpValue.toString();
+                } else {
+                    value = "";
                 }
-                tmpValue.setCharset(charset);
-                value = tmpValue.toString();
 
                 addParam(name, value);
             } catch (IOException e) {
diff --git a/container/webapps/docs/changelog.xml b/container/webapps/docs/changelog.xml
index e7c0586..1b77a75 100644
--- a/container/webapps/docs/changelog.xml
+++ b/container/webapps/docs/changelog.xml
@@ -69,6 +69,14 @@
         if there were errors during HTTP parameter parsing. (kkolinko)
       </add>
       <fix>
+        <bug>52384</bug>: Do not fail with parameter parsing when debug logging
+        is enabled. (kkolinko, jim)
+      </fix>
+      <fix>
+        Do not flag extra '&amp;' characters in parameters as parse errors.
+        (kkolinko, jim)
+      </fix>
+      <fix>
         Slightly improve performance of UDecoder.convert(). Align
         <code>%2f</code> handling between implementations. (kkolinko)
       </fix>