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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?).
-----------------------------------------------------------------------------
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.
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