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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:54:37 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:54:37 +0000 |
commit | 97c26c1924b076ef23ebe4381558e8aa025712b2 (patch) | |
tree | 109724175f07436696f51b14b5abbd3f4d704d6d /libmisc/hushed.c | |
parent | Initial commit. (diff) | |
download | shadow-97c26c1924b076ef23ebe4381558e8aa025712b2.tar.xz shadow-97c26c1924b076ef23ebe4381558e8aa025712b2.zip |
Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | libmisc/hushed.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/libmisc/hushed.c b/libmisc/hushed.c new file mode 100644 index 0000000..84b2f55 --- /dev/null +++ b/libmisc/hushed.c @@ -0,0 +1,77 @@ +/* + * SPDX-FileCopyrightText: 1991 - 1993, Julianne Frances Haugh + * SPDX-FileCopyrightText: 1991 - 1993, Chip Rosenthal + * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz + * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko + * SPDX-FileCopyrightText: 2008 - 2010, Nicolas François + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <config.h> + +#ident "$Id$" + +#include <sys/types.h> +#include <stdio.h> +#include <pwd.h> +#include "defines.h" +#include "prototypes.h" +#include "getdef.h" +/* + * hushed - determine if a user receives login messages + * + * Look in the hushed-logins file (or user's home directory) to see + * if the user is to receive the login-time messages. + */ +bool hushed (const char *username) +{ + struct passwd *pw; + const char *hushfile; + char buf[BUFSIZ]; + bool found; + FILE *fp; + + /* + * Get the name of the file to use. If this option is not + * defined, default to a noisy login. + */ + + hushfile = getdef_str ("HUSHLOGIN_FILE"); + if (NULL == hushfile) { + return false; + } + + pw = getpwnam (username); + if (NULL == pw) { + return false; + } + + /* + * If this is not a fully rooted path then see if the + * file exists in the user's home directory. + */ + + if (hushfile[0] != '/') { + (void) snprintf (buf, sizeof (buf), "%s/%s", pw->pw_dir, hushfile); + return (access (buf, F_OK) == 0); + } + + /* + * If this is a fully rooted path then go through the file + * and see if this user, or its shell is in there. + */ + + fp = fopen (hushfile, "r"); + if (NULL == fp) { + return false; + } + for (found = false; !found && (fgets (buf, (int) sizeof buf, fp) == buf);) { + buf[strcspn (buf, "\n")] = '\0'; + found = (strcmp (buf, pw->pw_shell) == 0) || + (strcmp (buf, pw->pw_name) == 0); + } + (void) fclose (fp); + return found; +} + |