bc0657d13c
* Avoid assignments in comparisons. * (hushed) Change type of found to bool. * Add brackets. * Always check if the user or the shell is in the file. Do not check the first character of the line first. This is simpler and match better with the HUSHLOGIN_FILE documentation.
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*
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* Copyright (c) 1991 - 1993, Julianne Frances Haugh
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* Copyright (c) 1991 - 1993, Chip Rosenthal
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2003 - 2005, Tomasz Kłoczko
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* 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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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* 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 FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#ident "$Id$"
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#include <sys/types.h>
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#include <stdio.h>
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#include <pwd.h>
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#include "defines.h"
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#include "prototypes.h"
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#include "getdef.h"
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/*
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* hushed - determine if a user receives login messages
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*
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* Look in the hushed-logins file (or user's home directory) to see
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* if the user is to receive the login-time messages.
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*/
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bool hushed (const struct passwd *pw)
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{
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char *hushfile;
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char buf[BUFSIZ];
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bool found;
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FILE *fp;
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/*
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* Get the name of the file to use. If this option is not
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* defined, default to a noisy login.
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*/
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hushfile = getdef_str ("HUSHLOGIN_FILE");
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if (NULL == hushfile) {
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return false;
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}
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/*
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* If this is not a fully rooted path then see if the
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* file exists in the user's home directory.
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*/
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if (hushfile[0] != '/') {
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snprintf (buf, sizeof (buf), "%s/%s", pw->pw_dir, hushfile);
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return (access (buf, F_OK) == 0);
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}
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/*
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* If this is a fully rooted path then go through the file
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* and see if this user, or its shell is in there.
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*/
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fp = fopen (hushfile, "r");
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if (NULL == fp) {
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return false;
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}
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for (found = false; !found && (fgets (buf, sizeof buf, fp) != NULL);) {
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buf[strlen (buf) - 1] = '\0';
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found = (strcmp (buf, pw->pw_shell) == 0) ||
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(strcmp (buf, pw->pw_name) == 0);
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}
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(void) fclose (fp);
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return found;
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}
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