ef32209fd7
libmisc/loginprompt.c, libmisc/ttytype.c, libmisc/tz.c, src/login_nopam.c, src/chpasswd.c, src/chgpasswd.c, lib/port.c: The size argument of fgets is an int, not a size_t. * libmisc/loginprompt.c: Ignore the return value from signal() when the signal handlers are restored. * src/chpasswd.c: Cast the return value of time() to a long integer. * src/chpasswd.c: Use the SCALE macro instead of (24L * 3600L) for the values to be set in /etc/shadow.
176 lines
4.5 KiB
C
176 lines
4.5 KiB
C
/*
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* Copyright (c) 1989 - 1993, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2003 - 2005, Tomasz Kłoczko
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* Copyright (c) 2008 , Nicolas François
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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 <stdio.h>
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#include <signal.h>
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#include <ctype.h>
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#include "prototypes.h"
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#include "defines.h"
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#include "getdef.h"
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static void login_exit (unused int sig)
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{
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exit (1);
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}
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/*
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* login_prompt - prompt the user for their login name
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*
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* login_prompt() displays the standard login prompt. If ISSUE_FILE
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* is set in login.defs, this file is displayed before the prompt.
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*/
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void login_prompt (const char *prompt, char *name, int namesize)
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{
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char buf[1024];
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#define MAX_ENV 32
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char *envp[MAX_ENV];
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int envc;
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char *cp;
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int i;
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FILE *fp;
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RETSIGTYPE (*sigquit) (int);
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#ifdef SIGTSTP
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RETSIGTYPE (*sigtstp) (int);
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#endif
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/*
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* There is a small chance that a QUIT character will be part of
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* some random noise during a prompt. Deal with this by exiting
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* instead of core dumping. If SIGTSTP is defined, do the same
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* thing for that signal.
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*/
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sigquit = signal (SIGQUIT, login_exit);
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#ifdef SIGTSTP
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sigtstp = signal (SIGTSTP, login_exit);
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#endif
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/*
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* See if the user has configured the issue file to
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* be displayed and display it before the prompt.
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*/
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if (prompt) {
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cp = getdef_str ("ISSUE_FILE");
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if (NULL != cp) {
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fp = fopen (cp, "r");
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if (NULL != fp) {
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while ((i = getc (fp)) != EOF) {
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putc (i, stdout);
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}
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(void) fclose (fp);
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}
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}
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gethostname (buf, sizeof buf);
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printf (prompt, buf);
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(void) fflush (stdout);
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}
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/*
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* Read the user's response. The trailing newline will be
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* removed.
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*/
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memzero (buf, sizeof buf);
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if (fgets (buf, (int) sizeof buf, stdin) != buf) {
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exit (1);
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}
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cp = strchr (buf, '\n');
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if (NULL == cp) {
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exit (1);
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}
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*cp = '\0'; /* remove \n [ must be there ] */
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/*
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* Skip leading whitespace. This makes " username" work right.
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* Then copy the rest (up to the end or the first "non-graphic"
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* character into the username.
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*/
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for (cp = buf; *cp == ' ' || *cp == '\t'; cp++);
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for (i = 0; i < namesize - 1 && isgraph (*cp); name[i++] = *cp++);
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while (isgraph (*cp)) {
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cp++;
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}
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if ('\0' != *cp) {
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cp++;
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}
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name[i] = '\0';
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/*
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* This is a disaster, at best. The user may have entered extra
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* environmental variables at the prompt. There are several ways
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* to do this, and I just take the easy way out.
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*/
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if ('\0' != *cp) { /* process new variables */
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char *nvar;
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int count = 1;
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for (envc = 0; envc < MAX_ENV; envc++) {
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nvar = strtok ((0 != envc) ? (char *) 0 : cp, " \t,");
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if (NULL == nvar) {
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break;
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}
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if (strchr (nvar, '=') != NULL) {
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envp[envc] = nvar;
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} else {
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envp[envc] = xmalloc (strlen (nvar) + 32);
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sprintf (envp[envc], "L%d=%s", count++, nvar);
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}
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}
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set_env (envc, envp);
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}
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/*
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* Set the SIGQUIT handler back to its original value
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*/
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(void) signal (SIGQUIT, sigquit);
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#ifdef SIGTSTP
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(void) signal (SIGTSTP, sigtstp);
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#endif
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}
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