cf9cc6963c
The variable declarations for the buffers have been aligned in this commit, so that they appear in the diff, making it easier to review. Some important but somewhat tangent changes included in this commit: - lib/nss.c: The size was being defined as 65, but then used as 64. That was a bug, although not an important one; we were just wasting one byte. Fix that while we replace snprintf() by SNPRINTF(), which will get the size from sizeof(), and thus will use the real size. Signed-off-by: Alejandro Colomar <alx@kernel.org>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* SPDX-FileCopyrightText: 1991 - 1993, Julianne Frances Haugh
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* SPDX-FileCopyrightText: 1991 - 1993, Chip Rosenthal
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* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
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* SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
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* SPDX-FileCopyrightText: 2008 - 2010, Nicolas François
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*
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* SPDX-License-Identifier: BSD-3-Clause
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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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#include "string/sprintf.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 char *username)
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{
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bool found;
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char buf[BUFSIZ];
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FILE *fp;
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const char *hushfile;
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struct passwd *pw;
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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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pw = getpwnam (username);
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if (NULL == pw) {
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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, "%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) == buf);) {
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buf[strcspn (buf, "\n")] = '\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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