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markt-asf pushed a commit to branch 11.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
The following commit(s) were added to refs/heads/11.0.x by this push:
new aaff561b66 Review "Fix ArrayIndexOutOfBoundsException in
IPv6Utils.canonize()"
aaff561b66 is described below
commit aaff561b66e77ddfe336f3e9ada1a9748cb85f92
Author: Mark Thomas <[email protected]>
AuthorDate: Tue Nov 3 19:40:35 2026 +0000
Review "Fix ArrayIndexOutOfBoundsException in IPv6Utils.canonize()"
Reduce code duplication.
Update the Javadoc to align with the code
---
java/org/apache/tomcat/util/net/IPv6Utils.java | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/java/org/apache/tomcat/util/net/IPv6Utils.java
b/java/org/apache/tomcat/util/net/IPv6Utils.java
index 4b4cb50142..92a01302d0 100644
--- a/java/org/apache/tomcat/util/net/IPv6Utils.java
+++ b/java/org/apache/tomcat/util/net/IPv6Utils.java
@@ -46,16 +46,17 @@ public class IPv6Utils {
* fe80:0:0:0:f0f0:c0c0:1919:1234%4 -> fe80::f0f0:c0c0:1919:1234%4).
* </p>
* <p>
- * The behaviour of this method is undefined if an invalid IPv6 address is
passed in as input.
+ * Input that looks like an IPv6 address but is malformed, such as one
with more than 8 groups or a group with more
+ * than 4 significant characters, is returned without any processing. The
result is otherwise undefined if an
+ * invalid IPv6 address is passed in as input.
* </p>
*
* @param ipv6Address String representing valid IPv6 address.
*
- * @return String representing IPv6 in canonical form.
- *
- * @throws IllegalArgumentException if IPv6 format is unacceptable.
+ * @return String representing IPv6 in canonical form, or the unchanged
input if it is null, not an IPv6 address or
+ * malformed.
*/
- public static String canonize(String ipv6Address) throws
IllegalArgumentException {
+ public static String canonize(String ipv6Address) {
if (ipv6Address == null) {
return null;
@@ -130,19 +131,12 @@ public class IPv6Utils {
int change = 0;
if (colonsPos >= 0 && colonsPos < ipv6AddressLength - 1) {
- int colonCounter = 0;
- for (int i = 0; i < ipv6AddressLength; i++) {
- if (ipv6Address.charAt(i) == ':') {
- colonCounter++;
- }
- }
-
if (colonsPos == 0) {
expanded.insert(0, "0");
change = change + 1;
}
- for (int i = 0; i < MAX_NUMBER_OF_GROUPS - colonCounter; i++) {
+ for (int i = 0; i < MAX_NUMBER_OF_GROUPS - colonCount; i++) {
expanded.insert(colonsPos + 1, "0:");
change = change + 2;
}
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