mirror of
https://git.rtems.org/rtems-libbsd/
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1b07480ddc
The files have been taken from RTEMS repository with head commit at bd9e45d91f77657445400bc2c814f251c9e37cef
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
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* Authorship
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* ----------
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* This software was created by
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* Till Straumann <strauman@slac.stanford.edu>, 2003-2007
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* Stanford Linear Accelerator Center, Stanford University.
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*
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* Acknowledgement of sponsorship
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* ------------------------------
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* This software was produced by
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* the Stanford Linear Accelerator Center, Stanford University,
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* under Contract DE-AC03-76SFO0515 with the Department of Energy.
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*
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* Government disclaimer of liability
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* ----------------------------------
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* Neither the United States nor the United States Department of Energy,
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* nor any of their employees, makes any warranty, express or implied, or
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* assumes any legal liability or responsibility for the accuracy,
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* completeness, or usefulness of any data, apparatus, product, or process
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* disclosed, or represents that its use would not infringe privately owned
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* rights.
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*
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* Stanford disclaimer of liability
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* --------------------------------
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* Stanford University makes no representations or warranties, express or
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* implied, nor assumes any liability for the use of this software.
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*
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* Stanford disclaimer of copyright
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* --------------------------------
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* Stanford University, owner of the copyright, hereby disclaims its
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* copyright and all other rights in this software. Hence, anyone may
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* freely use it for any purpose without restriction.
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*
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* Maintenance of notices
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* ----------------------
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* In the interest of clarity regarding the origin and status of this
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* SLAC software, this and all the preceding Stanford University notices
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* are to remain affixed to any copy or derivative of this software made
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* or distributed by the recipient and are to be affixed to any copy of
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* software made or distributed by the recipient that contains a copy or
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* derivative of this software.
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*
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* ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
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*
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* Copyright (c) 2009 embedded brains GmbH and others.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* D-82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <termios.h>
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <rtems/telnetd.h>
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#include "des.h"
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#include <rtems/passwd.h>
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/**
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* @brief Standard Telnet login check that uses DES to encrypt the passphrase.
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*
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* Takes a @a passphrase, encrypts it and compares it to the encrypted
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* passphrase in the @c TELNETD_PASSWD environment variable. No password is
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* required if @c TELNETD_PASSWD is unset. The argument @a user is ignored.
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*/
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bool rtems_telnetd_login_check(
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const char *user,
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const char *passphrase
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)
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{
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char *pw = getenv( "TELNETD_PASSWD");
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char cryptbuf [21];
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char salt [3];
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if (pw == NULL || strlen( pw) == 0) {
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#ifdef TELNETD_DEFAULT_PASSWD
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pw = TELNETD_DEFAULT_PASSWD;
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#else
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return true;
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#endif
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}
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strncpy( salt, pw, 2);
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salt [2] = '\0';
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return strcmp(
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__des_crypt_r( passphrase, salt, cryptbuf, sizeof( cryptbuf)),
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pw
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) == 0;
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}
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