107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
/****************************************************************************
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* apps/fsutils/passwd/passwd_verify.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <string.h>
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#include <semaphore.h>
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#include <apps/fsutils/passwd.h>
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#include "passwd.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: passwd_verify
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*
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* Description:
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* Return true if the username exists in the /etc/passwd file and if the
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* password matches the user password in that faile.
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*
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* Input Parameters:
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*
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* Returned Value:
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* One (1) is returned on success match, Zero (OK) is returned on an
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* unsuccessful match; a negated errno value is returned on any other
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* failure.
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*
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****************************************************************************/
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int passwd_verify(FAR const char *username, FAR const char *password)
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{
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struct passwd_s passwd;
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char encrypted[MAX_ENCRYPTED + 1];
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PASSWD_SEM_DECL(sem);
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int ret;
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/* Get exclusive access to the /etc/passwd file */
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ret = passwd_lock(&sem);
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if (ret < 0)
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{
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return ret;
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}
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/* Verify that the username exists in the /etc/passwd file */
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ret = passwd_find(username, &passwd);
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if (ret < 0)
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{
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/* The username does not exist in the /etc/passwd file */
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goto errout_with_lock;
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}
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/* Encrypt the provided password */
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ret = passwd_encrypt(password, encrypted);
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if (ret < 0)
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{
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goto errout_with_lock;
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}
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/* Compare the encrypted passwords */
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ret = (strcmp(passwd.encrypted, encrypted) == 0) ? 1 : 0;
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errout_with_lock:
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(void)passwd_unlock(sem);
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return ret;
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}
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