169 lines
4.1 KiB
C
169 lines
4.1 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: MBSE BBS Shadow Password Suite
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* Original Source .......: Shadow Password Suite
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* Original Copyright ....: Julianne Frances Haugh and others.
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*
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*****************************************************************************
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* Copyright (C) 1997-2002
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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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 "mblogin.h"
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#include "getdef.h"
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#include "xmalloc.h"
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#include "env.h"
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#include "loginprompt.h"
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void login_exit(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 (cp && (fp = fopen(cp, "r"))) {
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while ((i = getc(fp)) != EOF)
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putc(i, stdout);
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fclose(fp);
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}
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gethostname(buf, sizeof buf);
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printf(prompt, buf);
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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, sizeof buf, stdin) != buf)
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exit(1);
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cp = strchr(buf, '\n');
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if (!cp)
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exit(1);
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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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;
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// for (i = 0; i < namesize - 1 && isgraph(*cp); name[i++] = *cp++);
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/*
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* Allow double names for Fidonet login style.
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*/
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for (i = 0; i < namesize - 1 && isprint(*cp); name[i++] = *cp++);
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while (isgraph(*cp))
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cp++;
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if (*cp)
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cp++;
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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 (*cp != '\0') { /* 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(envc ? (char *)0 : cp, " \t,");
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if (!nvar)
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break;
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if (strchr(nvar, '=')) {
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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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signal(SIGQUIT, sigquit);
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#ifdef SIGTSTP
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signal(SIGTSTP, sigtstp);
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#endif
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}
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