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, 214 insertions, 0 deletions

diff --git a/source4/heimdal/lib/gssapi/mech/gss_import_name.c b/source4/heimdal/lib/gssapi/mech/gss_import_name.c
new file mode 100644
index 0000000000..9684301ba4
--- /dev/null
+++ b/source4/heimdal/lib/gssapi/mech/gss_import_name.c
@@ -0,0 +1,214 @@
+/*-
+ * 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_import_name.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
+ */
+
+#include "mech_locl.h"
+RCSID("$Id: gss_import_name.c,v 1.3 2006/06/29 21:23:13 lha Exp $");
+
+static OM_uint32
+_gss_import_export_name(OM_uint32 *minor_status,
+    const gss_buffer_t input_name_buffer,
+    gss_name_t *output_name)
+{
+	OM_uint32 major_status;
+	unsigned char *p = input_name_buffer->value;
+	size_t len = input_name_buffer->length;
+	size_t t;
+	gss_OID_desc mech_oid;
+	gssapi_mech_interface m;
+	struct _gss_name *name;
+	gss_name_t new_canonical_name;
+
+	*minor_status = 0;
+	*output_name = 0;
+
+	/*
+	 * Make sure that TOK_ID is {4, 1}.
+	 */
+	if (len < 2)
+		return (GSS_S_BAD_NAME);
+	if (p[0] != 4 || p[1] != 1)
+		return (GSS_S_BAD_NAME);
+	p += 2;
+	len -= 2;
+
+	/*
+	 * Get the mech length and the name length and sanity
+	 * check the size of of the buffer.
+	 */
+	if (len < 2)
+		return (GSS_S_BAD_NAME);
+	t = (p[0] << 8) + p[1];
+	p += 2;
+	len -= 2;
+
+	/*
+	 * Check the DER encoded OID to make sure it agrees with the
+	 * length we just decoded.
+	 */
+	if (p[0] != 6)		/* 6=OID */
+		return (GSS_S_BAD_NAME);
+	p++;
+	len--;
+	t--;
+	if (p[0] & 0x80) {
+		int digits = p[0];
+		p++;
+		len--;
+		t--;
+		mech_oid.length = 0;
+		while (digits--) {
+			mech_oid.length = (mech_oid.length << 8) | p[0];
+			p++;
+			len--;
+			t--;
+		}
+	} else {
+		mech_oid.length = p[0];
+		p++;
+		len--;
+		t--;
+	}
+	if (mech_oid.length != t)
+		return (GSS_S_BAD_NAME);
+
+	mech_oid.elements = p;
+
+	if (len < t + 4)
+		return (GSS_S_BAD_NAME);
+	p += t;
+	len -= t;
+
+	t = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+	p += 4;
+	len -= 4;
+
+	if (len != t)
+		return (GSS_S_BAD_NAME);
+
+	m = __gss_get_mechanism(&mech_oid);
+	if (!m)
+		return (GSS_S_BAD_MECH);
+
+	/*
+	 * Ask the mechanism to import the name.
+	 */
+	major_status = m->gm_import_name(minor_status,
+	    input_name_buffer, GSS_C_NT_EXPORT_NAME, &new_canonical_name);
+
+	/*
+	 * Now we make a new name and mark it as an MN.
+	 */
+	name = _gss_make_name(m, new_canonical_name);
+	if (!name) {
+		m->gm_release_name(minor_status, &new_canonical_name);
+		return (GSS_S_FAILURE);
+	}
+
+	*output_name = (gss_name_t) name;
+
+	*minor_status = 0;
+	return (GSS_S_COMPLETE);
+}
+
+OM_uint32
+gss_import_name(OM_uint32 *minor_status,
+    const gss_buffer_t input_name_buffer,
+    const gss_OID input_name_type,
+    gss_name_t *output_name)
+{
+	gss_OID			name_type = input_name_type;
+	OM_uint32		major_status;
+	struct _gss_name	*name;
+
+	if (input_name_buffer->length == 0) {
+		*minor_status = 0;
+		*output_name = 0;
+		return (GSS_S_BAD_NAME);
+	}
+
+	/*
+	 * Use GSS_NT_USER_NAME as default name type.
+	 */
+	if (name_type == GSS_C_NO_OID)
+		name_type = GSS_C_NT_USER_NAME;
+
+	/*
+	 * If this is an exported name, we need to parse it to find
+	 * the mechanism and then import it as an MN. See RFC 2743
+	 * section 3.2 for a description of the format.
+	 */
+	if (gss_oid_equal(name_type, GSS_C_NT_EXPORT_NAME)) {
+		return _gss_import_export_name(minor_status,
+		    input_name_buffer, output_name);
+	}
+
+	/*
+	 * Only allow certain name types. This is pretty bogus - we
+	 * should figure out the list of supported name types using
+	 * gss_inquire_names_for_mech.
+	 */
+	if (!gss_oid_equal(name_type, GSS_C_NT_USER_NAME)
+	    && !gss_oid_equal(name_type, GSS_C_NT_MACHINE_UID_NAME)
+	    && !gss_oid_equal(name_type, GSS_C_NT_STRING_UID_NAME)
+	    && !gss_oid_equal(name_type, GSS_C_NT_HOSTBASED_SERVICE_X)
+	    && !gss_oid_equal(name_type, GSS_C_NT_HOSTBASED_SERVICE)
+	    && !gss_oid_equal(name_type, GSS_C_NT_ANONYMOUS)
+	    && !gss_oid_equal(name_type, GSS_KRB5_NT_PRINCIPAL_NAME)) {
+		*minor_status = 0;
+		*output_name = 0;
+		return (GSS_S_BAD_NAMETYPE);
+	}
+
+	*minor_status = 0;
+	name = malloc(sizeof(struct _gss_name));
+	if (!name) {
+		*minor_status = ENOMEM;
+		return (GSS_S_FAILURE);
+	}
+	memset(name, 0, sizeof(struct _gss_name));
+
+	major_status = _gss_copy_oid(minor_status,
+	    name_type, &name->gn_type);
+	if (major_status) {
+		free(name);
+		return (GSS_S_FAILURE);
+	}
+
+	major_status = _gss_copy_buffer(minor_status,
+	    input_name_buffer, &name->gn_value);
+	if (major_status) {
+		gss_name_t rname = (gss_name_t)name;
+		gss_release_name(minor_status, &rname);
+		return (GSS_S_FAILURE);
+	}
+
+	SLIST_INIT(&name->gn_mn);
+
+	*output_name = (gss_name_t) name;
+	return (GSS_S_COMPLETE);
+}