From ebbf758b644a97e1778d60491deadb3c04bd1399 Mon Sep 17 00:00:00 2001
From: markt <markt@13f79535-47bb-0310-9956-ffa450edef68>
Date: Sat, 3 Mar 2007 15:56:14 +0000
Subject: [PATCH] Port fix from TC5. As per RFC2616, requests with multiple
 content-length headers are invalid.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@514176 13f79535-47bb-0310-9956-ffa450edef68
---
 java/org/apache/coyote/Request.java               |  2 +-
 java/org/apache/tomcat/util/http/MimeHeaders.java | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/java/org/apache/coyote/Request.java b/java/org/apache/coyote/Request.java
index 21562754c..63c1e3d75 100644
--- a/java/org/apache/coyote/Request.java
+++ b/java/org/apache/coyote/Request.java
@@ -294,7 +294,7 @@ public final class Request {
     public long getContentLengthLong() {
         if( contentLength > -1 ) return contentLength;
 
-        MessageBytes clB = headers.getValue("content-length");
+        MessageBytes clB = headers.getUniqueValue("content-length");
         contentLength = (clB == null || clB.isNull()) ? -1 : clB.getLong();
 
         return contentLength;
diff --git a/java/org/apache/tomcat/util/http/MimeHeaders.java b/java/org/apache/tomcat/util/http/MimeHeaders.java
index 1bb336205..4dd914764 100644
--- a/java/org/apache/tomcat/util/http/MimeHeaders.java
+++ b/java/org/apache/tomcat/util/http/MimeHeaders.java
@@ -293,6 +293,25 @@ public class MimeHeaders {
         return null;
     }
 
+    /**
+     * Finds and returns a unique header field with the given name. If no such
+     * field exists, null is returned. If the specified header field is not
+     * unique then an {@link IllegalArgumentException} is thrown. 
+     */
+    public MessageBytes getUniqueValue(String name) {
+        MessageBytes result = null;
+        for (int i = 0; i < count; i++) {
+            if (headers[i].getName().equalsIgnoreCase(name)) {
+                if (result == null) {
+                    result = headers[i].getValue();
+                } else {
+                    throw new IllegalArgumentException();
+                }
+            }
+        }
+        return result;
+    }
+
     // bad shortcut - it'll convert to string ( too early probably,
     // encoding is guessed very late )
     public String getHeader(String name) {
-- 
2.11.0