James Moger
2012-09-07 13a3f5bc3e2d25fc76850f86070dc34efe60d77a
src/com/gitblit/utils/HttpUtils.java
@@ -32,13 +32,48 @@
    * @return the host url
    */
   public static String getGitblitURL(HttpServletRequest request) {
      // default to the request scheme and port
      String scheme = request.getScheme();
      int port = request.getServerPort();
      // try to use reverse-proxy server's port
        String forwardedPort = request.getHeader("X-Forwarded-Port");
        if (StringUtils.isEmpty(forwardedPort)) {
           forwardedPort = request.getHeader("X_Forwarded_Port");
        }
        if (!StringUtils.isEmpty(forwardedPort)) {
           // reverse-proxy server has supplied the original port
           try {
              port = Integer.parseInt(forwardedPort);
           } catch (Throwable t) {
           }
        }
      // try to use reverse-proxy server's scheme
        String forwardedScheme = request.getHeader("X-Forwarded-Proto");
        if (StringUtils.isEmpty(forwardedScheme)) {
           forwardedScheme = request.getHeader("X_Forwarded_Proto");
        }
        if (!StringUtils.isEmpty(forwardedScheme)) {
           // reverse-proxy server has supplied the original scheme
           scheme = forwardedScheme;
           if ("https".equals(scheme) && port == 80) {
              // proxy server is https, inside server is 80
              // this is likely because the proxy server has not supplied
              // x-forwarded-port. since 80 is almost definitely wrong,
              // make an educated guess that 443 is correct.
              port = 443;
           }
        }
      StringBuilder sb = new StringBuilder();
      sb.append(request.getScheme());
      sb.append(scheme);
      sb.append("://");
      sb.append(request.getServerName());
      if ((request.getScheme().equals("http") && request.getServerPort() != 80)
            || (request.getScheme().equals("https") && request.getServerPort() != 443)) {
         sb.append(":" + request.getServerPort());
      if (("http".equals(scheme) && port != 80)
            || ("https".equals(scheme) && port != 443)) {
         sb.append(":" + port);
      }
      sb.append(request.getContextPath());
      return sb.toString();