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authenticate.c
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C/C++ Source or Header
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1994-04-01
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3KB
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76 lines
/* Copyright (c) 1993, 1994 Washington University in Saint Louis
* 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.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution. 3. All advertising
* materials mentioning features or use of this software must display the
* following acknowledgement: This product includes software developed by the
* Washington University in Saint Louis and its contributors. 4. Neither the
* name of the University nor the names of its contributors may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASHINGTON UNIVERSITY AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASHINGTON
* UNIVERSITY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "stdio.h"
#include "string.h"
#include "authuser.h"
#include "authenticate.h"
#define AUTHNAMESIZE 100
char authuser[AUTHNAMESIZE];
int authenticated;
authenticate()
{
#if USE_A_RFC931
unsigned long in;
unsigned short local, remote;
#endif /* USE_A_RFC931 */
char *user;
/* Ideally more authentication schemes would be called from here, with
* the strongest called first. One possible double-check would be to
* verify that the results of all authentication calls (returning
* identical data!) are checked against each other. */
authenticated = 0; /* this is a bitmask, one bit per method */
user = "*";
#if USE_A_RFC931
if (auth_fd(0, &in, &local, &remote) == -1)
user = "?"; /* getpeername/getsockname failure */
else {
if (!(user = auth_tcpuser(in, local, remote))) {
user = "*"; /* remote host doesn't support RFC 931 */
} else {
authenticated |= A_RFC931;
}
}
#endif /* USE_A_RFC931 */
strncpy(authuser, user, sizeof(authuser));
authuser[AUTHNAMESIZE - 1] = '\0';
}