1 files changed, 86 insertions, 0 deletions
diff --git a/contrib/openpam/lib/openpam_restore_cred.c b/contrib/openpam/lib/openpam_restore_cred.c
new file mode 100644
index 0000000..05c3b10
--- /dev/null
+++ b/contrib/openpam/lib/openpam_restore_cred.c
@@ -0,0 +1,86 @@
+/*-
+ * Copyright (c) 2002 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * NAI Labs, 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.
+ *
+ * $P4: //depot/projects/openpam/lib/openpam_restore_cred.c#1 $
+ */
+
+#include <sys/param.h>
+
+#include <pwd.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+/*
+ * OpenPAM extension
+ *
+ * Restore credentials
+ */
+
+int
+openpam_restore_cred(pam_handle_t *pamh)
+{
+	struct pam_saved_cred *scred;
+	int r;
+
+	r = pam_get_data(pamh, PAM_SAVED_CRED, (const void **)&scred);
+	if (r != PAM_SUCCESS)
+		return (r);
+	if (scred == NULL)
+		return (PAM_SYSTEM_ERR);
+	if (seteuid(scred->euid) == -1 ||
+	    setgroups(scred->ngroups, scred->groups) == -1 ||
+	    setegid(scred->egid) == -1)
+		return (PAM_SYSTEM_ERR);
+	pam_set_data(pamh, PAM_SAVED_CRED, NULL, NULL);
+	return (PAM_SUCCESS);
+}
+
+/*
+ * Error codes:
+ *
+ *	=pam_get_data
+ *	PAM_SYSTEM_ERR
+ */
+
+/**
+ * The =openpam_restore_cred function restores the credentials saved by
+ * =openpam_borrow_cred.
+ *
+ * >setegid
+ * >seteuid
+ * >setgroups
+ */