From ce3f4bd24c330e0cace6a31567e1516dfaa66234 Mon Sep 17 00:00:00 2001
From: Christian Aistleitner <christian@quelltextlich.at>
Date: Sun, 24 Mar 2013 20:42:23 -0400
Subject: [PATCH] Fix NPE when getting user's fork without repository list caching (issue-182)

---
 src/com/gitblit/utils/HttpUtils.java |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/src/com/gitblit/utils/HttpUtils.java b/src/com/gitblit/utils/HttpUtils.java
index b40088c..86f53cf 100644
--- a/src/com/gitblit/utils/HttpUtils.java
+++ b/src/com/gitblit/utils/HttpUtils.java
@@ -178,4 +178,27 @@
 		}
 		return null;
 	}
+	
+	public static boolean isIpAddress(String address) {
+		if (StringUtils.isEmpty(address)) {
+			return false;
+		}
+		String [] fields = address.split("\\.");
+		if (fields.length == 4) {
+			// IPV4
+			for (String field : fields) {
+				try {
+					int value = Integer.parseInt(field);
+					if (value < 0 || value > 255) {
+						return false;
+					}
+				} catch (Exception e) {
+					return false;
+				}
+			}
+			return true;
+		}
+		// TODO IPV6?
+		return false;
+	}
 }

--
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