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/* $OpenBSD: nologin.c,v 1.6 2015/10/13 07:10:38 doug Exp $ */ |
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/* |
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* Copyright (c) 1997, Jason Downs. All rights reserved. |
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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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* 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 the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS |
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <err.h> |
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#include <fcntl.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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/* Distinctly different from _PATH_NOLOGIN. */ |
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#define _PATH_NOLOGIN_TXT "/etc/nologin.txt" |
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#define DEFAULT_MESG "This account is currently not available.\n" |
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/*ARGSUSED*/ |
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int |
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main(int argc, char *argv[]) |
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{ |
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int nfd; |
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ssize_t nrd; |
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char nbuf[BUFSIZ]; |
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if (pledge("stdio rpath cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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nfd = open(_PATH_NOLOGIN_TXT, O_RDONLY); |
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if (nfd < 0) { |
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write(STDOUT_FILENO, DEFAULT_MESG, strlen(DEFAULT_MESG)); |
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exit (1); |
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} |
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while ((nrd = read(nfd, nbuf, sizeof(nbuf))) != -1 && nrd != 0) |
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write(STDOUT_FILENO, nbuf, nrd); |
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close (nfd); |
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exit (1); |
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} |