From dec7f78a6c4f006139c4983ab3ecd0ddc55a6aa7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ugo=20M=C3=A9da?= <u.meda@sysdream.com>
Date: Mon, 6 Oct 2014 10:53:32 +0200
Subject: [PATCH] Add a CrumbExclusion for the /project/ path

---
 .../gitlabjenkins/GitLabWebHook.java          | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/dabsquared/gitlabjenkins/GitLabWebHook.java b/src/main/java/com/dabsquared/gitlabjenkins/GitLabWebHook.java
index b3de3f0..5175460 100644
--- a/src/main/java/com/dabsquared/gitlabjenkins/GitLabWebHook.java
+++ b/src/main/java/com/dabsquared/gitlabjenkins/GitLabWebHook.java
@@ -13,6 +13,7 @@ import hudson.plugins.git.GitSCM;
 import hudson.plugins.git.util.BuildData;
 import hudson.scm.SCM;
 import hudson.security.ACL;
+import hudson.security.csrf.CrumbExclusion;
 import hudson.util.HttpResponses;
 
 import java.io.IOException;
@@ -26,7 +27,10 @@ import java.util.ListIterator;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;
@@ -400,7 +404,7 @@ public class GitLabWebHook implements UnprotectedRootAction {
      * @param rsp The stapler response to write the output to.
      * @throws IOException
      */
-    private  void writeJSON(StaplerResponse rsp, JSONObject jsonObject) throws IOException {
+    private void writeJSON(StaplerResponse rsp, JSONObject jsonObject) throws IOException {
         rsp.setContentType("application/json");
         PrintWriter w = rsp.getWriter();
 
@@ -415,4 +419,21 @@ public class GitLabWebHook implements UnprotectedRootAction {
 
     }
 
+    @Extension
+    public static class GitlabWebHookCrumbExclusion extends CrumbExclusion {
+
+        @Override
+        public boolean process(HttpServletRequest req, HttpServletResponse resp, FilterChain chain) throws IOException, ServletException {
+            String pathInfo = req.getPathInfo();
+            if (pathInfo != null && pathInfo.startsWith(getExclusionPath())) {
+                chain.doFilter(req, resp);
+                return true;
+            }
+            return false;
+        }
+
+        private String getExclusionPath() {
+            return '/' + WEBHOOK_URL + '/';
+        }
+    }
 }