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, 164 insertions, 0 deletions

diff --git a/source4/heimdal/lib/gssapi/mech/gss_acquire_cred.c b/source4/heimdal/lib/gssapi/mech/gss_acquire_cred.c
new file mode 100644
index 0000000000..0b3554c0fa
--- /dev/null
+++ b/source4/heimdal/lib/gssapi/mech/gss_acquire_cred.c
@@ -0,0 +1,164 @@
+/*-
+ * 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: src/lib/libgssapi/gss_acquire_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
+ */
+
+#include "mech_locl.h"
+RCSID("$Id: gss_acquire_cred.c,v 1.4 2006/10/25 00:44:55 lha Exp $");
+
+OM_uint32
+gss_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 major_status;
+	gss_OID_set mechs = desired_mechs;
+	gss_OID_set_desc set;
+	struct _gss_name *name = (struct _gss_name *) desired_name;
+	gssapi_mech_interface m;
+	struct _gss_cred *cred;
+	struct _gss_mechanism_cred *mc;
+	OM_uint32 min_time, cred_time;
+	int i;
+
+	_gss_load_mech();
+
+	/*
+	 * First make sure that at least one of the requested
+	 * mechanisms is one that we support.
+	 */
+	if (mechs) {
+		for (i = 0; i < mechs->count; i++) {
+			int t;
+			gss_test_oid_set_member(minor_status,
+			    &mechs->elements[i], _gss_mech_oids, &t);
+			if (t)
+				break;
+		}
+		if (i == mechs->count) {
+			*output_cred_handle = 0;
+			*minor_status = 0;
+			return (GSS_S_BAD_MECH);
+		}
+	}
+
+	if (actual_mechs) {
+		major_status = gss_create_empty_oid_set(minor_status,
+		    actual_mechs);
+		if (major_status)
+			return (major_status);
+	}
+
+	cred = malloc(sizeof(struct _gss_cred));
+	if (!cred) {
+		if (actual_mechs)
+			gss_release_oid_set(minor_status, actual_mechs);
+		*minor_status = ENOMEM;
+		return (GSS_S_FAILURE);
+	}
+	cred->gc_usage = cred_usage;
+	SLIST_INIT(&cred->gc_mc);
+
+	if (mechs == GSS_C_NO_OID_SET)
+		mechs = _gss_mech_oids;
+
+	set.count = 1;
+	min_time = GSS_C_INDEFINITE;
+	for (i = 0; i < mechs->count; i++) {
+		struct _gss_mechanism_name *mn = NULL;
+
+		m = __gss_get_mechanism(&mechs->elements[i]);
+		if (!m)
+			continue;
+
+		if (desired_name != GSS_C_NO_NAME) {
+			mn = _gss_find_mn(name, &mechs->elements[i]);
+			if (!mn)
+				continue;
+		}
+
+		mc = malloc(sizeof(struct _gss_mechanism_cred));
+		if (!mc) {
+			continue;
+		}
+		SLIST_INIT(&cred->gc_mc);
+		mc->gmc_mech = m;
+		mc->gmc_mech_oid = &m->gm_mech_oid;
+
+		/*
+		 * XXX Probably need to do something with actual_mechs.
+		 */
+		set.elements = &mechs->elements[i];
+		major_status = m->gm_acquire_cred(minor_status,
+		    (desired_name != GSS_C_NO_NAME
+			? mn->gmn_name : GSS_C_NO_NAME),
+		    time_req, &set, cred_usage,
+		    &mc->gmc_cred, NULL, &cred_time);
+		if (major_status) {
+			free(mc);
+			continue;
+		}
+		if (cred_time < min_time)
+			min_time = cred_time;
+
+		if (actual_mechs) {
+			major_status = gss_add_oid_set_member(minor_status,
+			    mc->gmc_mech_oid, actual_mechs);
+			if (major_status) {
+				m->gm_release_cred(minor_status,
+				    &mc->gmc_cred);
+				free(mc);
+				continue;
+			}
+		}
+
+		SLIST_INSERT_HEAD(&cred->gc_mc, mc, gmc_link);
+	}
+
+	/*
+	 * If we didn't manage to create a single credential, return
+	 * an error.
+	 */
+	if (!SLIST_FIRST(&cred->gc_mc)) {
+		free(cred);
+		if (actual_mechs)
+			gss_release_oid_set(minor_status, actual_mechs);
+		*output_cred_handle = 0;
+		*minor_status = 0;
+		return (GSS_S_NO_CRED);
+	}
+
+	if (time_rec)
+		*time_rec = min_time;
+	*output_cred_handle = (gss_cred_id_t) cred;
+	*minor_status = 0;
+	return (GSS_S_COMPLETE);
+}