r19604: This is a massive commit, and I appologise in advance for it's size.

This merges Samba4 with lorikeet-heimdal, which itself has been
tracking Heimdal CVS for the past couple of weeks.

This is such a big change because Heimdal reorganised it's internal
structures, with the mechglue merge, and because many of our 'wishes' have been granted:  we now have DCE_STYLE GSSAPI, send_to_kdc hooks and many other features merged into the mainline code.  We have adapted to upstream's choice of API in these cases.

In gensec_gssapi and gensec_krb5, we either expect a valid PAC, or NO
PAC.  This matches windows behavour.  We also have an option to
require the PAC to be present (which allows us to automate the testing
of this code).

This also includes a restructure of how the kerberos dependencies are
handled, due to the fallout of the merge.

Andrew Bartlett
(This used to be commit 4826f1735197c2a471d771495e6d4c1051b4c471)

1 files changed, 291 insertions, 0 deletions

diff --git a/source4/heimdal/lib/gssapi/spnego/cred_stubs.c b/source4/heimdal/lib/gssapi/spnego/cred_stubs.c
new file mode 100644
index 0000000000..8f8edab15e
--- /dev/null
+++ b/source4/heimdal/lib/gssapi/spnego/cred_stubs.c
@@ -0,0 +1,291 @@
+/*
+ * Copyright (c) 2004, PADL Software Pty Ltd.
+ * 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. Neither the name of PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "spnego/spnego_locl.h"
+
+RCSID("$Id: cred_stubs.c,v 1.5 2006/10/07 22:27:04 lha Exp $");
+
+OM_uint32
+_gss_spnego_release_cred(OM_uint32 *minor_status, gss_cred_id_t *cred_handle)
+{
+    gssspnego_cred cred;
+    OM_uint32 ret;
+    
+    *minor_status = 0;
+
+    if (*cred_handle == GSS_C_NO_CREDENTIAL) {
+	return GSS_S_COMPLETE;
+    }
+    cred = (gssspnego_cred)*cred_handle;
+
+    ret = gss_release_cred(minor_status, &cred->negotiated_cred_id);
+
+    free(cred);
+    *cred_handle = GSS_C_NO_CREDENTIAL;
+
+    return ret;
+}
+
+OM_uint32
+_gss_spnego_alloc_cred(OM_uint32 *minor_status,
+		       gss_cred_id_t mech_cred_handle,
+		       gss_cred_id_t *cred_handle)
+{
+    gssspnego_cred cred;
+
+    if (*cred_handle != GSS_C_NO_CREDENTIAL) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    cred = calloc(1, sizeof(*cred));
+    if (cred == NULL) {
+	*cred_handle = GSS_C_NO_CREDENTIAL;
+	*minor_status = ENOMEM;
+	return GSS_S_FAILURE;
+    }
+
+    cred->negotiated_cred_id = mech_cred_handle;
+
+    *cred_handle = (gss_cred_id_t)cred;
+
+    return GSS_S_COMPLETE; 
+}
+
+/*
+ * For now, just a simple wrapper that avoids recursion. When
+ * we support gss_{get,set}_neg_mechs() we will need to expose
+ * more functionality.
+ */
+OM_uint32 _gss_spnego_acquire_cred
+(OM_uint32 *minor_status,
+ const gss_name_t desired_name,
+ OM_uint32 time_req,
+ const gss_OID_set desired_mechs,
+ gss_cred_usage_t cred_usage,
+ gss_cred_id_t * output_cred_handle,
+ gss_OID_set * actual_mechs,
+ OM_uint32 * time_rec
+    )
+{
+    OM_uint32 ret, tmp;
+    gss_OID_set_desc actual_desired_mechs;
+    gss_OID_set mechs;
+    int i, j;
+    gss_cred_id_t cred_handle = GSS_C_NO_CREDENTIAL;
+    gssspnego_cred cred;
+
+    *output_cred_handle = GSS_C_NO_CREDENTIAL;
+
+    ret = gss_indicate_mechs(minor_status, &mechs);
+    if (ret != GSS_S_COMPLETE)
+	return ret;
+
+    /* Remove ourselves from this list */
+    actual_desired_mechs.count = mechs->count;
+    actual_desired_mechs.elements = malloc(actual_desired_mechs.count *
+					   sizeof(gss_OID_desc));
+    if (actual_desired_mechs.elements == NULL) {
+	*minor_status = ENOMEM;
+	ret = GSS_S_FAILURE;
+	goto out;
+    }
+
+    for (i = 0, j = 0; i < mechs->count; i++) {
+	if (gss_oid_equal(&mechs->elements[i], GSS_SPNEGO_MECHANISM))
+	    continue;
+
+	actual_desired_mechs.elements[j] = mechs->elements[i];
+	j++;
+    }
+    actual_desired_mechs.count = j;
+
+    ret = _gss_spnego_alloc_cred(minor_status, GSS_C_NO_CREDENTIAL,
+				 &cred_handle);
+    if (ret != GSS_S_COMPLETE)
+	goto out;
+
+    cred = (gssspnego_cred)cred_handle;
+    ret = gss_acquire_cred(minor_status, desired_name,
+			   time_req, &actual_desired_mechs,
+			   cred_usage,
+			   &cred->negotiated_cred_id,
+			   actual_mechs, time_rec);
+    if (ret != GSS_S_COMPLETE)
+	goto out;
+
+    *output_cred_handle = cred_handle;
+
+out:
+    gss_release_oid_set(&tmp, &mechs);
+    if (actual_desired_mechs.elements != NULL) {
+	free(actual_desired_mechs.elements);
+    }
+    if (ret != GSS_S_COMPLETE) {
+	_gss_spnego_release_cred(&tmp, &cred_handle);
+    }
+
+    return ret;
+}
+
+OM_uint32 _gss_spnego_inquire_cred
+           (OM_uint32 * minor_status,
+            const gss_cred_id_t cred_handle,
+            gss_name_t * name,
+            OM_uint32 * lifetime,
+            gss_cred_usage_t * cred_usage,
+            gss_OID_set * mechanisms
+           )
+{
+    gssspnego_cred cred;
+    OM_uint32 ret;
+
+    if (cred_handle == GSS_C_NO_CREDENTIAL) {
+	*minor_status = 0;
+	return GSS_S_NO_CRED;
+    }
+
+    cred = (gssspnego_cred)cred_handle;
+
+    ret = gss_inquire_cred(minor_status,
+			   cred->negotiated_cred_id,
+			   name,
+			   lifetime,
+			   cred_usage,
+			   mechanisms);
+
+    return ret;
+}
+
+OM_uint32 _gss_spnego_add_cred (
+            OM_uint32 * minor_status,
+            const gss_cred_id_t input_cred_handle,
+            const gss_name_t desired_name,
+            const gss_OID desired_mech,
+            gss_cred_usage_t cred_usage,
+            OM_uint32 initiator_time_req,
+            OM_uint32 acceptor_time_req,
+            gss_cred_id_t * output_cred_handle,
+            gss_OID_set * actual_mechs,
+            OM_uint32 * initiator_time_rec,
+            OM_uint32 * acceptor_time_rec
+           )
+{
+    gss_cred_id_t spnego_output_cred_handle = GSS_C_NO_CREDENTIAL;
+    OM_uint32 ret, tmp;
+    gssspnego_cred input_cred, output_cred;
+
+    *output_cred_handle = GSS_C_NO_CREDENTIAL;
+
+    ret = _gss_spnego_alloc_cred(minor_status, GSS_C_NO_CREDENTIAL,
+				 &spnego_output_cred_handle);
+    if (ret)
+	return ret;
+
+    input_cred = (gssspnego_cred)input_cred_handle;
+    output_cred = (gssspnego_cred)spnego_output_cred_handle;
+
+    ret = gss_add_cred(minor_status,
+		       input_cred->negotiated_cred_id,
+		       desired_name,
+		       desired_mech,
+		       cred_usage,
+		       initiator_time_req,
+		       acceptor_time_req,
+		       &output_cred->negotiated_cred_id,
+		       actual_mechs,
+		       initiator_time_rec,
+		       acceptor_time_rec);
+    if (ret) {
+	_gss_spnego_release_cred(&tmp, &spnego_output_cred_handle);
+	return ret;
+    }
+
+    *output_cred_handle = spnego_output_cred_handle;
+
+    return GSS_S_COMPLETE;
+}
+
+OM_uint32 _gss_spnego_inquire_cred_by_mech (
+            OM_uint32 * minor_status,
+            const gss_cred_id_t cred_handle,
+            const gss_OID mech_type,
+            gss_name_t * name,
+            OM_uint32 * initiator_lifetime,
+            OM_uint32 * acceptor_lifetime,
+            gss_cred_usage_t * cred_usage
+           )
+{
+    gssspnego_cred cred;
+    OM_uint32 ret;
+
+    if (cred_handle == GSS_C_NO_CREDENTIAL) {
+	*minor_status = 0;
+	return GSS_S_NO_CRED;
+    }
+
+    cred = (gssspnego_cred)cred_handle;
+
+    ret = gss_inquire_cred_by_mech(minor_status,
+				   cred->negotiated_cred_id,
+				   mech_type,
+				   name,
+				   initiator_lifetime,
+				   acceptor_lifetime,
+				   cred_usage);
+
+    return ret;
+}
+
+OM_uint32 _gss_spnego_inquire_cred_by_oid
+           (OM_uint32 * minor_status,
+            const gss_cred_id_t cred_handle,
+            const gss_OID desired_object,
+            gss_buffer_set_t *data_set)
+{
+    gssspnego_cred cred;
+    OM_uint32 ret;
+
+    if (cred_handle == GSS_C_NO_CREDENTIAL) {
+	*minor_status = 0;
+	return GSS_S_NO_CRED;
+    }
+    cred = (gssspnego_cred)cred_handle;
+
+    ret = gss_inquire_cred_by_oid(minor_status,
+				  cred->negotiated_cred_id,
+				  desired_object,
+				  data_set);
+
+    return ret;
+}
+