reject login script; rejects attempted authentication

will be used when BSD authentication is enabled

3 files changed, 220 insertions, 0 deletions

diff --git a/libexec/login_reject/Makefile b/libexec/login_reject/Makefile
new file mode 100644
index 00000000000..f877d6044ff
--- /dev/null
+++ b/libexec/login_reject/Makefile
@@ -0,0 +1,12 @@
+#	$OpenBSD: Makefile,v 1.1 2000/12/12 02:34:43 millert Exp $
+
+PROG=	login_reject
+MAN=	login_reject.8
+CFLAGS+=-Wall
+
+BINOWN=	root
+BINGRP=	auth
+BINMODE=555
+BINDIR= /usr/libexec/auth
+
+.include <bsd.prog.mk>
diff --git a/libexec/login_reject/login_reject.8 b/libexec/login_reject/login_reject.8
new file mode 100644
index 00000000000..944b0d0ae46
--- /dev/null
+++ b/libexec/login_reject/login_reject.8
@@ -0,0 +1,75 @@
+.\" $OpenBSD: login_reject.8,v 1.1 2000/12/12 02:34:43 millert Exp $
+.\"
+.\" Copyright (c) 1995 Berkeley Software Design, Inc. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by Berkeley Software Design,
+.\"	Inc.
+.\" 4. The name of Berkeley Software Design, Inc.  may not be used to endorse
+.\"    or promote products derived from this software without specific prior
+.\"    written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	BSDI	$From: login_reject.8,v 1.2 1996/08/01 21:02:26 prb Exp $
+.\"
+.Dd September 29, 1995
+.Dt LOGIN_REJECT 8
+.Os
+.Sh NAME
+.Nm login_reject
+.Nd provide rejected authentication
+.Sh SYNOPSIS
+.Nm login_reject
+.Op Fl s Ar service
+.Ar user
+.Op Ar class
+.Sh DESCRIPTION
+.Pp
+The
+.Nm
+utility provides the rejection authentication class.
+The
+.Ar user
+name, while required, is ignored.
+The
+.Ar class
+name, which is optional, is also ignored.
+The
+.Nm reject
+authentication mechanism is intended to be used to disallow certain
+types of logins.  For example, a class entry (see
+.Xr login.conf 5 )
+may contain:
+.Bd -literal -compact
+
+	:auth=krb-or-pwd,kerberos,passwd:
+	:auth-ftp=reject:
+
+.Ed
+which would allow authentication for this class in most situations
+but would reject attempts to authenticate from
+.Xr ftpd 8 .
+.Sh SEE ALSO
+.Xr login.conf 5 ,
+.Xr ftpd 8 ,
+.Xr login 8
diff --git a/libexec/login_reject/login_reject.c b/libexec/login_reject/login_reject.c
new file mode 100644
index 00000000000..e1dff6fe3c0
--- /dev/null
+++ b/libexec/login_reject/login_reject.c
@@ -0,0 +1,133 @@
+/*	$OpenBSD: login_reject.c,v 1.1 2000/12/12 02:34:43 millert Exp $	*/
+
+/*-
+ * Copyright (c) 1995 Berkeley Software Design, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Berkeley Software Design,
+ *      Inc.
+ * 4. The name of Berkeley Software Design, Inc.  may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	BSDI $From: login_reject.c,v 1.5 1996/08/22 20:43:11 prb Exp $
+ */
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/file.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <login_cap.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	FILE *back;
+	char passbuf[1];
+    	int c;
+	struct rlimit rl;
+	int mode = 0;
+
+	rl.rlim_cur = 0;
+	rl.rlim_max = 0;
+	(void)setrlimit(RLIMIT_CORE, &rl);
+
+	(void)signal(SIGQUIT, SIG_IGN);
+	(void)signal(SIGINT, SIG_IGN);
+	(void)setpriority(PRIO_PROCESS, 0, 0);
+
+	openlog("login", LOG_ODELAY, LOG_AUTH);
+
+    	while ((c = getopt(argc, argv, "v:s:")) != EOF)
+		switch(c) {
+		case 'v':
+			break;
+		case 's':	/* service */
+			if (strcmp(optarg, "login") == 0)
+				mode = 0;
+			else if (strcmp(optarg, "challenge") == 0)
+				mode = 1;
+			else if (strcmp(optarg, "response") == 0)
+				mode = 2;
+			else {
+				syslog(LOG_ERR, "%s: invalid service", optarg);
+				exit(1);
+			}
+			break;
+		default:
+			syslog(LOG_ERR, "usage error");
+			exit(1);
+		}
+
+	switch(argc - optind) {
+	case 2:
+	case 1:
+		break;
+	default:
+		syslog(LOG_ERR, "usage error");
+		exit(1);
+	}
+
+	if (!(back = fdopen(3, "r+")))  {
+		syslog(LOG_ERR, "reopening back channel: %m");
+		exit(1);
+	}
+	if (mode == 1) {
+		fprintf(back, BI_SILENT "\n");
+		exit(0);
+	}
+
+	if (mode == 2) {
+		mode = 0;
+		c = -1;
+		while (read(3, passbuf, 1) == 1) {
+			if (passbuf[0] == '\0' && ++mode == 2)
+				break;
+		}
+		if (mode < 2) {
+			syslog(LOG_ERR, "protocol error on back channel");
+			exit(1);
+		}
+	} else
+		getpass("Password:");
+
+
+	crypt("password", "xx");
+	fprintf(back, BI_REJECT "\n");
+	exit(1);
+}