If you want to use mod_authnz_external.c with a hardcoded internal function,
then you first have to hardcode an internal function (who wudda thunk?).
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Step 1:
	Edit "mod_authnz_external.c"

Step 2:
	Uncomment the _HARDCODE_ #define.

Step 3:
	Uncomment the line:
              /* #include "your_function_here.c" */
	Replace "your_function_here.c" with the path/name of your function.

	(Actually, I think it might be better to imbed the function itself
	directly in this file instead of including it.  Modules work better
	if they are implemented in a single source file.)

	Your function should start something like:

	  int
	  function_name (char *user_name,char *user_passwd,char *config_path)

	It should return 0 if the password is correct for the given user,
	and other values if it is not, pretty much just like external
	authentication programs do.

	You'll want to code this very carefully.  A crash will crash not just
	your program but the entire httpd.

	** BIG NOTE TO PROGRAMMERS **
	-DO NOT- use exit() or other such calls that will cause your
	function to exit abnormally or dump core. It will take the entire 
	httpd with it and display a message to your browser saying "no data". 
	Use "return" instead of exit().

Step 4:
	Choose a <function name> for your function. ie: 'RADIUS' or 'SYBASE'
	This will be used for telling mod_authnz_external which hard coded
	function you want to call.

Step 5:
	Find the exec_hardcode() function inside mod_authnz_external.c.
	Find the big commented section there.  Replace the example call
	to example() with a call to your function.  Also change the name
	"EXAMPLE" to the name you chose for your function.

	The function call in exec_hardcode() should look something like:

        if (strcmp(check_type,"<function name>")==0) {
            code = function_name(c->user,sent_pw,config_file);
        }

	Here, we replace "<function_name>" with the name you chose in step 4.
	function_name(), of course, should be whatever you called your function
	in step 3.

Step 6:
	Save your work.  Also save some whales.

Step 7:
	Compile and configure mod_authnz_external as described in the
	INSTALL file.

	The AddExternalAuth command in your httpd.conf file might look
	something like

	    AddExternalAuth whatever EXAMPLE:/usr/local/data/configfile

	Here 'whatever' is the name you will use to invoke this authenticator
	in the AuthExternal commands in your .htaccess files.  'EXAMPLE'
	is the name you choose in step 4 and inserted into the "if" statement
	in step 5.  Any data after the colon will be passed into your function.
	It might be a config file path or something else.