1 files changed, 126 insertions, 0 deletions
diff --git a/src/plugins/gssapi/interposer/reenter_main.c b/src/plugins/gssapi/interposer/reenter_main.c
new file mode 100644
index 0000000000..f7deed0a44
--- /dev/null
+++ b/src/plugins/gssapi/interposer/reenter_main.c
@@ -0,0 +1,126 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ * Copyright (C) 2013 Red Hat, 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Red Hat, Inc., nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
+ * 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.
+ */
+
+#include "autoconf.h"
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gssapi/gssapi.h>
+#include <gssapi/gssapi_ext.h>
+
+#include "reenter.h"
+
+#define no_const(ptr) ((void *)((uintptr_t)(ptr)))
+
+/* 2.16.840.1.113730.3.8.15.1 */
+const gss_OID_desc gssproxy_mech_interposer = {
+    .length = 11,
+    .elements = "\140\206\110\001\206\370\102\003\010\017\001"
+};
+
+#define KRB5_OID_LEN 9
+#define KRB5_OID "\052\206\110\206\367\022\001\002\002"
+
+#define KRB5_OLD_OID_LEN 5
+#define KRB5_OLD_OID "\053\005\001\005\002"
+
+/* Incorrect krb5 mech OID emitted by MS. */
+#define KRB5_WRONG_OID_LEN 9
+#define KRB5_WRONG_OID "\052\206\110\202\367\022\001\002\002"
+
+#define IAKERB_OID_LEN 6
+#define IAKERB_OID "\053\006\001\005\002\005"
+
+const gss_OID_desc gpoid_krb5 = {
+    .length = KRB5_OID_LEN,
+    .elements = KRB5_OID
+};
+const gss_OID_desc gpoid_krb5_old = {
+    .length = KRB5_OLD_OID_LEN,
+    .elements = KRB5_OLD_OID
+};
+const gss_OID_desc gpoid_krb5_wrong = {
+    .length = KRB5_WRONG_OID_LEN,
+    .elements = KRB5_WRONG_OID
+};
+const gss_OID_desc gpoid_iakerb = {
+    .length = IAKERB_OID_LEN,
+    .elements = IAKERB_OID
+};
+
+
+gss_OID_set gss_mech_interposer(gss_OID mech_type)
+{
+    gss_OID_set interposed_mechs;
+    OM_uint32 maj, min;
+
+    LOG(gss_mech_interposer);
+
+    interposed_mechs = NULL;
+    maj = 0;
+    if (gss_oid_equal(&gssproxy_mech_interposer, mech_type)) {
+        maj = gss_create_empty_oid_set(&min, &interposed_mechs);
+        if (maj != 0) {
+            return NULL;
+        }
+        maj = gss_add_oid_set_member(&min, no_const(&gpoid_krb5),
+                                     &interposed_mechs);
+        if (maj != 0) {
+            goto done;
+        }
+        maj = gss_add_oid_set_member(&min, no_const(&gpoid_krb5_old),
+                                     &interposed_mechs);
+        if (maj != 0) {
+            goto done;
+        }
+        maj = gss_add_oid_set_member(&min, no_const(&gpoid_krb5_wrong),
+                                     &interposed_mechs);
+        if (maj != 0) {
+            goto done;
+        }
+        maj = gss_add_oid_set_member(&min, no_const(&gpoid_iakerb),
+                                     &interposed_mechs);
+        if (maj != 0) {
+            goto done;
+        }
+    }
+
+done:
+    if (maj != 0) {
+        (void)gss_release_oid_set(&min, &interposed_mechs);
+        interposed_mechs = NULL;
+    }
+
+    return interposed_mechs;
+}