/*      $NetBSD: session.h,v 1.5 2025/01/08 19:59:39 christos Exp $     */

/*
* session.c - PPP session control.
*
* Copyright (c) 2007 Diego Rivera. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. The name(s) of the authors of this software must not be used to
*    endorse or promote products derived from this software without
*    prior written permission.
*
* 3. Redistributions of any form whatsoever must retain the following
*    acknowledgment:
*    "This product includes software developed by Paul Mackerras
*     <[email protected]>".
*
* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef PPP_SESSION_H
#define PPP_SESSION_H

#include "pppdconf.h"

#ifdef __cplusplus
extern "C" {
#endif

#define SESS_AUTH  1    /* Check User Authentication */
#define SESS_ACCT  2    /* Check Account Validity */

/* Convenience parameter to do the whole enchilada */
#define SESS_ALL   (SESS_AUTH | SESS_ACCT)

/*
* int session_start(...)
*
* Start a session, performing any necessary validations.
*
* Parameters:
*      const int flags :
*              Any combination of the SESS_XXX flags, to indicate what the function
*              should do as part of its checks
*
*      const char* user :
*              The username to validate.  May safely be null.
*
*      const char* passwd :
*              The password to validate the user with. May safely be null.
*
*      const char* tty :
*              The TTY the user is connected on. May safely be null.
*
*      char** msg :
*              A char* to return an error or success message.  This message will be returned
*              regardless of the result.  May safely be null.
*
* Return Value:
*      Zero value for failure, non-zero value for successful session verification.
*/
int
session_start(const int flags, const char* user, const char* passwd, const char* tty, char** msg);

/* Added these macros for convenience... */
#define session_auth(user, pass, tty, msg) \
       session_start(SESS_AUTH, user, pass, tty, msg)

#define session_check(user, pass, tty, msg) \
       session_start(SESS_ACCT, user, pass, tty, msg)

#define session_full(user, pass, tty, msg) \
       session_start(SESS_ALL, user, pass, tty, msg)

/*
* void session_end(...)
*
* End a previously-started session.
*
* Parameters:
*      const char* tty :
*              The TTY the user is connected on. May safely be null.
*/
void
session_end(const char* tty);

#ifdef __cplusplus
}
#endif

#endif // PPP_SESSION_H