Creating in C++ Module for FreeRadius

[Patrick Ko]

Hello everybody,
here are my Steps how i created an C++ Module for FreeRadius.


   - *Adaptions in the radiusd.conf*

         Create an new Module Section like:



modules {

                        cpp {

                                   …

                               }

                }



   - Creating an new Directory in the modules Directory

          I created an new Directory named "*rlm_cpp*" where I putted an
Makefile and my *rlm_cpp.cpp* File


          *Makefile:*

          *TARGET      = rlm_cpp
*
*SRCS        = rlm_cpp.cpp
*
*HEADERS     =
RLM_CFLAGS  =  -I/usr/include
RLM_LIBS    =  -lc
RLM_INSTALL = install-example

## this uses the RLM_CFLAGS and RLM_LIBS and SRCS defs to make TARGET.
include ../rules.mak

$(LT_OBJS): $(HEADERS)

## the rule that RLM_INSTALL tells the parent rules.mak to use.
install-example:
        touch .*


My outgoing rlm_cpp.cpp File was the *.c File I took.
Then I need to change every function of this file like this:

*extern "C"* {
static int cpp_authorize(void *instance, REQUEST *request)
{
...
}
}

Then I added two DEFINES at the TOP of my rlm_cpp.cpp File, because the two
words are reserved names in in C.

*#define operator op3578000
#define template tem34123*

At the end I needed to change the the struct. First I changed the struct in
radiusd.conf

struct auth_req {
...
home_server*_t *                    *home_server
...
}

typedef struct radclient {
...
home_server*_t *          *coa_server;
...
} RADCLIENT;

Also change the Typedef to:

typedef struct home_server {
...
}home_server*_t;*

Every struct in the Source of FreeRadius need to be changed to *
home_server_t*!


now you should made finallay the main make and see the all should be fine
compiled! at the end run "make install " and implement the new C++ Module
in an Section in the radiusd.conf and it will run!


Greetz
Patrick
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