s3-auth split the auth_generic functions into a seperate file

Signed-off-by: Stefan Metzmacher <metze@samba.org>

1 files changed, 189 insertions, 0 deletions

diff --git a/source3/auth/auth_generic.c b/source3/auth/auth_generic.c
new file mode 100644
index 0000000000..47723d57bb
--- /dev/null
+++ b/source3/auth/auth_generic.c
@@ -0,0 +1,189 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 3.0
+   handle NLTMSSP, server side
+
+   Copyright (C) Andrew Tridgell      2001
+   Copyright (C) Andrew Bartlett 2001-2003,2011
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "auth.h"
+#include "../auth/ntlmssp/ntlmssp.h"
+#include "ntlmssp_wrap.h"
+#include "../librpc/gen_ndr/netlogon.h"
+#include "../librpc/gen_ndr/dcerpc.h"
+#include "../lib/tsocket/tsocket.h"
+#include "auth/gensec/gensec.h"
+#include "librpc/rpc/dcerpc.h"
+#include "lib/param/param.h"
+
+NTSTATUS auth_generic_prepare(const struct tsocket_address *remote_address,
+			      struct auth_generic_state **auth_ntlmssp_state)
+{
+	struct auth_context *auth_context;
+	struct auth_generic_state *ans;
+	NTSTATUS nt_status;
+
+	ans = talloc_zero(NULL, struct auth_generic_state);
+	if (!ans) {
+		DEBUG(0,("auth_ntlmssp_start: talloc failed!\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	nt_status = make_auth_context_subsystem(talloc_tos(), &auth_context);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(ans);
+		return nt_status;
+	}
+
+	ans->auth_context = talloc_steal(ans, auth_context);
+
+	if (auth_context->prepare_gensec) {
+		nt_status = auth_context->prepare_gensec(ans,
+							 &ans->gensec_security);
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			TALLOC_FREE(ans);
+			return nt_status;
+		}
+		*auth_ntlmssp_state = ans;
+		return NT_STATUS_OK;
+	} else {
+		struct gensec_settings *gensec_settings;
+		struct loadparm_context *lp_ctx;
+
+		lp_ctx = loadparm_init_s3(ans, loadparm_s3_context());
+		if (lp_ctx == NULL) {
+			DEBUG(10, ("loadparm_init_s3 failed\n"));
+			TALLOC_FREE(ans);
+			return NT_STATUS_INVALID_SERVER_STATE;
+		}
+
+		gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
+		if (lp_ctx == NULL) {
+			DEBUG(10, ("lpcfg_gensec_settings failed\n"));
+			TALLOC_FREE(ans);
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		nt_status = gensec_server_start(ans, gensec_settings,
+						NULL, &ans->gensec_security);
+
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			TALLOC_FREE(ans);
+			return nt_status;
+		}
+		talloc_unlink(ans, lp_ctx);
+		talloc_unlink(ans, gensec_settings);
+	}
+
+	nt_status = gensec_set_remote_address(ans->gensec_security,
+					      remote_address);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(ans);
+		return nt_status;
+	}
+
+	*auth_ntlmssp_state = ans;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_generic_start(struct auth_generic_state *auth_ntlmssp_state, const char *oid)
+{
+	struct gensec_ntlmssp_context *gensec_ntlmssp;
+	NTSTATUS status;
+
+	if (auth_ntlmssp_state->auth_context->gensec_start_mech_by_oid) {
+		return auth_ntlmssp_state->auth_context->gensec_start_mech_by_oid(
+				auth_ntlmssp_state->gensec_security, oid);
+	}
+
+	if (strcmp(oid, GENSEC_OID_NTLMSSP) != 0) {
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	status = gensec_start_mech_by_ops(auth_ntlmssp_state->gensec_security,
+					  &gensec_ntlmssp3_server_ops);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	gensec_ntlmssp =
+		talloc_get_type_abort(auth_ntlmssp_state->gensec_security->private_data,
+				      struct gensec_ntlmssp_context);
+
+	gensec_ntlmssp->auth_context = talloc_move(gensec_ntlmssp, &auth_ntlmssp_state->auth_context);
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_generic_authtype_start(struct auth_generic_state *auth_ntlmssp_state,
+				     uint8_t auth_type, uint8_t auth_level)
+{
+	struct gensec_ntlmssp_context *gensec_ntlmssp;
+	NTSTATUS status;
+
+	if (auth_ntlmssp_state->auth_context->gensec_start_mech_by_authtype) {
+		return auth_ntlmssp_state->auth_context->gensec_start_mech_by_authtype(
+				auth_ntlmssp_state->gensec_security,
+				auth_type, auth_level);
+	}
+
+	if (auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
+		/* The caller will then free the auth_ntlmssp_state,
+		 * undoing what was done in auth_generic_prepare().
+		 *
+		 * We can't do that logic here, as
+		 * auth_ntlmssp_want_feature() may have been called in
+		 * between.
+		 */
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	gensec_want_feature(auth_ntlmssp_state->gensec_security,
+			    GENSEC_FEATURE_DCE_STYLE);
+	gensec_want_feature(auth_ntlmssp_state->gensec_security,
+			    GENSEC_FEATURE_ASYNC_REPLIES);
+	if (auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
+		gensec_want_feature(auth_ntlmssp_state->gensec_security,
+				    GENSEC_FEATURE_SIGN);
+	} else if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
+		gensec_want_feature(auth_ntlmssp_state->gensec_security,
+				    GENSEC_FEATURE_SIGN);
+		gensec_want_feature(auth_ntlmssp_state->gensec_security,
+				    GENSEC_FEATURE_SEAL);
+	} else if (auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
+		/* Default features */
+	} else {
+		DEBUG(2,("auth_level %d not supported in DCE/RPC authentication\n",
+			 auth_level));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = gensec_start_mech_by_ops(auth_ntlmssp_state->gensec_security,
+					  &gensec_ntlmssp3_server_ops);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	gensec_ntlmssp =
+		talloc_get_type_abort(auth_ntlmssp_state->gensec_security->private_data,
+				      struct gensec_ntlmssp_context);
+
+	gensec_ntlmssp->auth_context = talloc_move(gensec_ntlmssp, &auth_ntlmssp_state->auth_context);
+
+	return NT_STATUS_OK;
+}