1 files changed, 86 insertions, 0 deletions
diff --git a/lib/openpam_nullconv.c b/lib/openpam_nullconv.c
new file mode 100644
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--- /dev/null
+++ b/lib/openpam_nullconv.c
@@ -0,0 +1,86 @@
+/*-
+ * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2004-2007 Dag-Erling Smørgrav
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * Network Associates Laboratories, the Security Research Division of
+ * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
+ *
+ * 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. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
+ *
+ * $Id: openpam_nullconv.c 408 2007-12-21 11:36:24Z des $
+ */
+
+#include <sys/types.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+/*
+ * OpenPAM extension
+ *
+ * Null conversation function
+ */
+
+int
+openpam_nullconv(int n,
+	 const struct pam_message **msg,
+	 struct pam_response **resp,
+	 void *data)
+{
+
+	ENTER();
+	(void)n;
+	(void)msg;
+	(void)resp;
+	(void)data;
+	RETURNC(PAM_CONV_ERR);
+}
+
+/*
+ * Error codes:
+ *
+ *	PAM_CONV_ERR
+ */
+
+/**
+ * The =openpam_nullconv function is a null conversation function suitable
+ * for applications that want to use PAM but don't support interactive
+ * dialog with the user.
+ * Such applications should set =PAM_AUTHTOK to whatever authentication
+ * token they've obtained on their own before calling =pam_authenticate
+ * and / or =pam_chauthtok, and their PAM configuration should specify the
+ * ;use_first_pass option for all modules that require access to the
+ * authentication token, to make sure they use =PAM_AUTHTOK rather than
+ * try to query the user.
+ *
+ * >openpam_ttyconv
+ * >pam_prompt
+ * >pam_set_item
+ * >pam_vprompt
+ */