Files
shadow/lib/loginprompt.c
T
Alejandro Colomar 0004cc46dd lib: Merge libmisc into libshadow
The separation was unnecessary, and caused build problems.  Let's go
wild and obliterate the library.  The files are moved to libshadow.

Scripted change:

$ find libmisc/ -type f \
| grep '\.[chy]$' \
| xargs mv -t lib;

Plus updating the Makefile and other references.  While at it, I've
sorted the sources lists.

Link: <https://github.com/shadow-maint/shadow/pull/792>
Reported-by: David Seifert <soap@gentoo.org>
Cc: Sam James <sam@gentoo.org>
Cc: Christian Bricart <christian@bricart.de>
Cc: Michael Vetter <jubalh@iodoru.org>
Cc: Robert Förster <Dessa@gmake.de>
[ soap tested the Gentoo package ]
Tested-by: David Seifert <soap@gentoo.org>
Acked-by: David Seifert <soap@gentoo.org>
Acked-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Iker Pedrosa <ipedrosa@redhat.com>
Acked-by: <lslebodn@fedoraproject.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2023-09-10 14:13:01 +02:00

112 lines
2.3 KiB
C

/*
* SPDX-FileCopyrightText: 1989 - 1993, Julianne Frances Haugh
* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2008 - 2011, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#ident "$Id$"
#include <assert.h>
#include <stdio.h>
#include <signal.h>
#include "alloc.h"
#include "prototypes.h"
#include "defines.h"
#include "getdef.h"
static void login_exit (unused int sig)
{
_exit (EXIT_FAILURE);
}
/*
* login_prompt - prompt the user for their login name
*
* login_prompt() displays the standard login prompt. If ISSUE_FILE
* is set in login.defs, this file is displayed before the prompt.
*/
void login_prompt (char *name, int namesize)
{
char buf[1024];
#define MAX_ENV 32
char *envp[MAX_ENV];
char *cp;
int i;
FILE *fp;
const char *fname = getdef_str ("ISSUE_FILE");
sighandler_t sigquit;
sighandler_t sigtstp;
/*
* There is a small chance that a QUIT character will be part of
* some random noise during a prompt. Deal with this by exiting
* instead of core dumping. Do the same thing for SIGTSTP.
*/
sigquit = signal (SIGQUIT, login_exit);
sigtstp = signal (SIGTSTP, login_exit);
/*
* See if the user has configured the issue file to
* be displayed and display it before the prompt.
*/
if (NULL != fname) {
fp = fopen (fname, "r");
if (NULL != fp) {
while ((i = getc (fp)) != EOF) {
(void) putc (i, stdout);
}
(void) fclose (fp);
}
}
(void) gethostname (buf, sizeof buf);
printf (_("\n%s login: "), buf);
(void) fflush (stdout);
/*
* Read the user's response. The trailing newline will be
* removed.
*/
memzero (buf, sizeof buf);
if (fgets (buf, sizeof buf, stdin) != buf) {
exit (EXIT_FAILURE);
}
cp = strchr (buf, '\n');
if (NULL == cp) {
exit (EXIT_FAILURE);
}
*cp = '\0'; /* remove \n [ must be there ] */
/*
* Skip leading whitespace. This makes " username" work right.
* Then copy the rest (up to the end) into the username.
*/
for (cp = buf; *cp == ' ' || *cp == '\t'; cp++);
for (i = 0; i < namesize - 1 && *cp != '\0'; name[i++] = *cp++);
name[i] = '\0';
/*
* Set the SIGQUIT handler back to its original value
*/
(void) signal (SIGQUIT, sigquit);
(void) signal (SIGTSTP, sigtstp);
}