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remm pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new cf82828c58 Fix edge case
cf82828c58 is described below

commit cf82828c5895c10ee969503c392676daadcbc15d
Author: remm <r...@apache.org>
AuthorDate: Wed Dec 11 12:05:34 2024 +0100

    Fix edge case
---
 java/org/apache/catalina/servlets/DefaultServlet.java | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/java/org/apache/catalina/servlets/DefaultServlet.java 
b/java/org/apache/catalina/servlets/DefaultServlet.java
index e066ec417d..76bb988aa5 100644
--- a/java/org/apache/catalina/servlets/DefaultServlet.java
+++ b/java/org/apache/catalina/servlets/DefaultServlet.java
@@ -2282,7 +2282,9 @@ public class DefaultServlet extends HttpServlet {
             return true;
         }
         boolean hasAsteriskValue = false;// check existence of special header 
value '*'
+        int headerCount = 0;
         while (headerValues.hasMoreElements() && !conditionSatisfied) {
+            headerCount++;
             String headerValue = headerValues.nextElement();
             if ("*".equals(headerValue)) {
                 hasAsteriskValue = true;
@@ -2301,7 +2303,11 @@ public class DefaultServlet extends HttpServlet {
                 }
             }
         }
-        if (hasAsteriskValue && headerValues.hasMoreElements()) {
+        if (headerValues.hasMoreElements()) {
+            headerCount++;
+        }
+
+        if (hasAsteriskValue && headerCount > 1) {
             // Note that an If-Match header field with a list value containing 
"*" and other values (including other
             // instances of "*") is syntactically invalid (therefore not 
allowed to be generated) and furthermore is
             // unlikely to be interoperable.
@@ -2376,13 +2382,14 @@ public class DefaultServlet extends HttpServlet {
         }
         boolean hasAsteriskValue = false;// check existence of special header 
value '*'
         boolean conditionSatisfied = true;
+        int headerCount = 0;
         while (headerValues.hasMoreElements()) {
-
+            headerCount++;
             String headerValue = headerValues.nextElement();
 
             if (headerValue.equals("*")) {
                 hasAsteriskValue = true;
-                if (headerValues.hasMoreElements()) {
+                if (headerCount > 1 || headerValues.hasMoreElements()) {
                     conditionSatisfied = false;
                     break;
                 } else {
@@ -2422,8 +2429,11 @@ public class DefaultServlet extends HttpServlet {
             }
 
         }
+        if (headerValues.hasMoreElements()) {
+            headerCount++;
+        }
 
-        if (hasAsteriskValue && headerValues.hasMoreElements()) {
+        if (hasAsteriskValue && headerCount > 1) {
             // Note that an If-None-Match header field with a list value 
containing "*" and other values (including
             // other instances of "*") is syntactically invalid (therefore not 
allowed to be generated) and furthermore
             // is unlikely to be interoperable.


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