Diameter is a AAA protocol that is supposed to be the successor to RADIUS, and OpenDiameter is an open source implementation of the Diameter Protocol. I recently started playing around with OpenDiameter and, to my surprise, the online resources and documentations on how to use it are very hard to find, if there is any. I figured out my way to get the basics running, and I am here to share my initial experiences, hoping to help other OpenDiameter beginners. I also hope that the OpenDiameter community could contribute more documentations to help new users and to make the project be more successful.

I will cover it in two posts:

• Part I is for build and installation
• Part II is for setting up a simple 3-party EAP-MD5 test

Part I, Build and Installation

You can download the OpenDiameter source package from this link.

The current release is of 1.0.7-i, and that is what I am going to use too. The best resource for this is the main README file that came with the source package, and it is more up to date than the how-to listed in the OpenDiameter website.

We should follow the instructions in the README file and they can be summarized as:

• Step 1. Install external libraries and tools if not already there
• Step 2. Set up environment variables ACE_ROOT and BOOST_ROOT to point to the right paths on your system
• Step 3. Extract OpenDiameter source package and do the usual "./configure; make; make install" routine in the OpenDiameter top directory.

Sounds pretty straightforward. However, there might be some tricky places. The parts that most likely will give you problems are the external libraries. OpenDiameter 1.0.7-i requires: 1. GNU g++ 4.x.x and above 1. ACE library 5.5.x 1. boost library 1.33.x and above 1. OpenSSL 1. Autoconf, Automake, Libtool

Number 1. and 5. are very common build tools on Linux and the like, and you usually wouldn't need to worry too much about them. OpenSSL is also very stable and easy to install if not pre-installed already. It is 2. and 3., i.e. ACE and boost libraries, that could be a little more i tricky.

Boost Library

For boost library, I found that the easiest way to install them is to use existing packaging tools like apt-get or yum. The version available seems just working fine. This is what I did on my ubuntu and FC (Fedora Core) 8 respectively.

ubuntu:

apt-get install libboost-dev

FC8:

yum install boost-devel

Note: you might need to be root or use sudo to install them.

After installing boost like the above, set the BOOST_ROOT environment to /usr/include/. The following is for bash:

export BOOST_ROOT=/usr/include/

ACE Library

ACE library installation could be the most troublesome in the whole process. OpenDiameter heavily relies on ACE library and it is also very picky about the version of it. The README file says 5.5.x, and trust me, not all 5.5.x would work. What I learned from hours of frustration is:

• 5.5 and low 5.5.x versions fail to build themselves. (at least on both the ubuntu and FC8 I have)
• 5.6 (the latest available) and high 5.5.x versions (like 5.5.10) will build themselves, but OpenDiameter 1.0.7-i won't build if using them.

After trying both, I chose the lesser of the two evils by using ACE 5.5 base version.

( To get ACE 5.5 itself compile, I only needed to change one small place on either system of mine, even though figuring that one place out took me some time. To get 5.6 compile, I had many more places to fix due to interface changes in ACE lib, but only to find the binaries built don't read the XML configuration files correctly. That was when I got scared and gave up. So my advice here is: stick to the ACE 5.5 base version itself)

Here is what needs to be done to install ACE 5.5:

• Get the 5.5 source here.

• Extract the tar file, and the main directory would be called ACE_wrappers. Get in there and create a sub-directory called "build", and that is where the build will happen. (ACE doesn't allow you to do build in the top directory)

tar xvf ACE-5.5.tar.gz

cd ACE_wrappers

mkdir build

cd build

../configure

• If it passes, congratulations! However, on both my systems it failed at the configure script. Here is what I did to fix those:

On my ubuntu, the gcc option -fvisibility-inlines-hidden used by ACE lib is causing problem and it can be fixed by removing it in the configure script file this way:

$ diff -upN configure.orig configure

--- configure.orig      2008-03-05 11:11:19.000000000 -0800

+++ configure   2008-03-05 11:13:30.000000000 -0800

...

@@ -10329,7 +10329,7 @@ _ACEOF

        *)

         { echo "$as_me:$LINENO: enabling GNU G++ visibility attribute support" >&5

 echo "$as_me: enabling GNU G++ visibility attribute support" >&6;}

-        ACE_GXX_VISIBILITY_FLAGS="-fvisibility=hidden -fvisibility-inlines-hidden"

+        ACE_GXX_VISIBILITY_FLAGS="-fvisibility=hidden"

         ACE_CXXFLAGS="$ACE_CXXFLAGS $ACE_GXX_VISIBILITY_FLAGS"

         cat >>confdefs.h <<\_ACEOF

On FC8, it failed because the header file for gettimeofday() on the system is <sys/time.h> not the expected <time.h> by configure script. So the following change in configure file fixed it:

# diff -upN ../configure.orig ../configure

--- ../configure.orig   2008-03-17 15:29:07.000000000 -0700

+++ ../configure        2008-03-17 16:31:00.000000000 -0700

@@ -87878,7 +87878,7 @@ cat confdefs.h >>conftest.$ac_ext

 cat >>conftest.$ac_ext <<_ACEOF

 /* end confdefs.h.  */



-#include <time.h>

+#include <sys/time.h>



 _ACEOF

 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |

Assuming your system already have

With those changes, I could proceed to the next step

• redo ../configure
• make and make install

Unfortunately, there is no guarantee the ACE 5.5 build won't have different symptoms on different systems, and I can only wish you good luck there. :)

Suppose your ACE 5.5 does get installed, you need to set the environment variable ACE_ROOT for OpenDiameter build's use. I installed ACE under /usr/local/src and here is what I did in my bash:

export ACE_ROOT=/usr/local/src/ACE_wrappers/

Build and Install OpenDiameter 1.0.7-i itself

Once I got both ACE 5.5 and boost installed, and both environment variables set, installing OpenDiameter itself became simple:

tar xvf opendiameter-1.0.7-i.tar.gz

cd opendiameter-1.0.7-i

./configure

make

make install

After that is done, verify by checkding if /usr/local/bin/aaad and /usr/local/bin/nasd are in place.

Those are two of the main binaries we will use for OpenDiameter. Now OpenDiameter should be ready for tests. In Part II, I will cover how to configure and use the binaries built for a simple EAP-MD5 test.

[ to be continued ]