Add a new extensible GSS-API layer which can support GSS-API plugins,

similar the the Solaris implementation. Repackage the krb5 GSS mechanism
as a plugin library for the new implementation. This also includes a
comprehensive set of manpages for the GSS-API functions with text mostly
taken from the RFC.

Reviewed by: Love Hörnquist Åstrand <lha@it.su.se>, ru (build system), des (openssh parts)

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/libgssapi/gss_inquire_mechs_for_name.c b/lib/libgssapi/gss_inquire_mechs_for_name.c
new file mode 100644
index 0000000..10bdd7f
--- /dev/null
+++ b/lib/libgssapi/gss_inquire_mechs_for_name.c
@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 2005 Doug Rabson
+ * 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.
+ *
+ * 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.
+ *
+ *	$FreeBSD$
+ */
+
+#include <gssapi/gssapi.h>
+
+#include "mech_switch.h"
+#include "name.h"
+
+OM_uint32
+gss_inquire_mechs_for_name(OM_uint32 *minor_status,
+    const gss_name_t input_name,
+    gss_OID_set *mech_types)
+{
+	OM_uint32		major_status;
+	struct _gss_name	*name = (struct _gss_name *) input_name;
+	struct _gss_mech_switch	*m;
+	gss_OID_set		name_types;
+	int			present;
+
+	*minor_status = 0;
+
+	major_status = gss_create_empty_oid_set(minor_status, mech_types);
+	if (major_status)
+		return (major_status);
+    
+	/*
+	 * We go through all the loaded mechanisms and see if this
+	 * name's type is supported by the mechanism. If it is, add
+	 * the mechanism to the set.
+	 */
+	SLIST_FOREACH(m, &_gss_mechs, gm_link) {
+		major_status = gss_inquire_names_for_mech(minor_status,
+		    &m->gm_mech_oid, &name_types);
+		if (major_status) {
+			gss_release_oid_set(minor_status, mech_types);
+			return (major_status);
+		}
+		gss_test_oid_set_member(minor_status,
+		    &name->gn_type, name_types, &present);
+		gss_release_oid_set(minor_status, &name_types);
+		if (present) {
+			major_status = gss_add_oid_set_member(minor_status,
+			    &m->gm_mech_oid, mech_types);
+			if (major_status) {
+				gss_release_oid_set(minor_status, mech_types);
+				return (major_status);
+			}
+		}
+	}
+
+	return (GSS_S_COMPLETE);
+}