1 line
5.3 KiB
C
Executable File
1 line
5.3 KiB
C
Executable File
/* Copyright (c) 2017, Computer History Museum
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted (subject to
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the limitations in the disclaimer below) provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided with the distribution.
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* Neither the name of Computer History Museum nor the names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
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COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE. */
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/*
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* Program: Login authenticator
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*
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* Author: Mark Crispin
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* Networks and Distributed Computing
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* Computing & Communications
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* University of Washington
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* Administration Building, AG-44
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* Seattle, WA 98195
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* Internet: MRC@CAC.Washington.EDU
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*
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* Date: 5 December 1995
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* Last Edited: 10 October 1996
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*
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* Copyright 1996 by the University of Washington
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appears in all copies and that both the
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* above copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the University of Washington not be
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* used in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. This software is made available
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* "as is", and
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* THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
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* WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
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* NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
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* (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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long auth_login_client (authchallenge_t challenger,authrespond_t responder,
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NETMBX *mb,void *stream,unsigned long *trial,
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char *user);
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char *auth_login_server (authresponse_t responder,int argc,char *argv[]);
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AUTHENTICATOR auth_log = {
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"LOGIN", /* authenticator name */
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auth_login_client, /* client method */
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auth_login_server, /* server method */
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NULL /* next authenticator */
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};
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#define PWD_USER "User Name"
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#define PWD_PWD "Password"
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/* Client authenticator
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* Accepts: challenger function
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* responder function
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* parsed network mailbox structure
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* stream argument for functions
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* pointer to current trial count
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* returned user name
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* Returns: T if success, NULL otherwise, number of trials incremented if retry
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*/
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long auth_login_client (authchallenge_t challenger,authrespond_t responder,
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NETMBX *mb,void *stream,unsigned long *trial,
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char *user)
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{
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char pwd[MAILTMPLEN];
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void *challenge;
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unsigned long clen;
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/* get user name prompt */
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if (challenge = (*challenger) (stream,&clen)) {
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fs_give ((void **) &challenge);
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/* prompt user */
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mm_login (mb,user,pwd,*trial);
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if (!pwd[0]) { /* user requested abort */
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(*responder) (stream,NULL,0);
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*trial = 0; /* don't retry */
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return T; /* will get a NO response back */
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}
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/* send user name */
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else if ((*responder) (stream,user,strlen (user)) &&
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(challenge = (*challenger) (stream,&clen))) {
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fs_give ((void **) &challenge);
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/* send password */
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if ((*responder) (stream,pwd,strlen (pwd))) {
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++*trial; /* can try again if necessary */
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return T; /* check the authentication */
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}
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}
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}
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*trial = 0; /* don't retry */
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return NULL; /* failed */
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}
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/* Server authenticator
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* Accepts: responder function
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* argument count
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* argument vector
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* Returns: authenticated user name or NULL
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*/
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char *auth_login_server (authresponse_t responder,int argc,char *argv[])
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{
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char *ret = NULL;
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char *user,*pass;
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if (user = (*responder) (PWD_USER,sizeof (PWD_USER),NULL)) {
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if (pass = (*responder) (PWD_PWD,sizeof (PWD_PWD),NULL)) {
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if (server_login (user,pass,argc,argv)) ret = myusername ();
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fs_give ((void **) &pass);
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}
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fs_give ((void **) &user);
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}
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return ret;
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}
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