s4-torture: Add start of a test to confirm winbindd PAC parsing

So far this confirms that we can accept a ticket using the secrets.tdb
entry.

Andrew Bartlett

1 files changed, 153 insertions, 0 deletions

diff --git a/source4/torture/winbind/winbind.c b/source4/torture/winbind/winbind.c
index 80b914b2eb..cb895f53b3 100644
--- a/source4/torture/winbind/winbind.c
+++ b/source4/torture/winbind/winbind.c
@@ -2,6 +2,7 @@
    Unix SMB/CIFS implementation.
    SMB torture tester
    Copyright (C) Stefan Metzmacher 2007
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2012
 
    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
@@ -20,6 +21,156 @@
 #include "includes.h"
 #include "torture/smbtorture.h"
 #include "torture/winbind/proto.h"
+#include "auth/auth.h"
+#include "auth/auth_sam_reply.h"
+#include "auth/gensec/gensec.h"
+#include "system/kerberos.h"
+#include "auth/kerberos/kerberos.h"
+#include "auth/credentials/credentials.h"
+#include "param/param.h"
+#include "lib/cmdline/popt_common.h"
+
+struct pac_data {
+	DATA_BLOB pac_blob;
+};
+
+/* A helper function which avoids touching the local databases to
+ * generate the session info, as we just want to verify the PAC
+ * details, not the full local token */
+static NTSTATUS test_generate_session_info_pac(struct auth4_context *auth_ctx,
+					       TALLOC_CTX *mem_ctx,
+					       struct smb_krb5_context *smb_krb5_context,
+					       DATA_BLOB *pac_blob,
+					       const char *principal_name,
+					       const struct tsocket_address *remote_address,
+					       uint32_t session_info_flags,
+					       struct auth_session_info **session_info)
+{
+	NTSTATUS nt_status;
+	struct auth_user_info_dc *user_info_dc;
+	TALLOC_CTX *tmp_ctx;
+	struct pac_data *pac_data;
+
+	tmp_ctx = talloc_named(mem_ctx, 0, "gensec_gssapi_session_info context");
+	NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+	auth_ctx->private_data = pac_data = talloc_zero(auth_ctx, struct pac_data); 
+
+	pac_data->pac_blob = *pac_blob;
+
+	talloc_steal(pac_data, pac_data->pac_blob.data);
+	nt_status = kerberos_pac_blob_to_user_info_dc(tmp_ctx,
+						      *pac_blob,
+						      smb_krb5_context->krb5_context,
+						      &user_info_dc,
+						      NULL, NULL);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(tmp_ctx);
+		return nt_status;
+	}
+
+	if (user_info_dc->info->authenticated) {
+		session_info_flags |= AUTH_SESSION_INFO_AUTHENTICATED;
+	}
+
+	session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES;
+	nt_status = auth_generate_session_info(mem_ctx,
+					       NULL,
+					       NULL,
+					       user_info_dc, session_info_flags,
+					       session_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(tmp_ctx);
+		return nt_status;
+	}
+
+	talloc_free(tmp_ctx);
+	return nt_status;
+}
+
+/* Check to see if we can pass the PAC across to the NETLOGON server for validation */
+
+/* Also happens to be a really good one-step verfication of our Kerberos stack */
+
+static bool torture_winbind_pac(struct torture_context *tctx)
+{
+	NTSTATUS status;
+
+	struct gensec_security *gensec_client_context;
+	struct gensec_security *gensec_server_context;
+
+	DATA_BLOB client_to_server, server_to_client;	
+
+	struct auth4_context *auth_context;
+	struct auth_session_info *session_info;
+	struct pac_data *pac_data;
+
+	TALLOC_CTX *tmp_ctx = talloc_new(tctx);
+	torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
+
+	auth_context = talloc_zero(tmp_ctx, struct auth4_context);
+	torture_assert(tctx, auth_context != NULL, "talloc_new() failed");
+
+	auth_context->generate_session_info_pac = test_generate_session_info_pac;
+
+	status = gensec_client_start(tctx, &gensec_client_context,
+				     lpcfg_gensec_settings(tctx, tctx->lp_ctx));
+	torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
+
+	status = gensec_set_target_hostname(gensec_client_context, cli_credentials_get_workstation(cmdline_credentials));
+
+	status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
+	torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
+
+	status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
+	torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
+
+	status = gensec_server_start(tctx,
+				     lpcfg_gensec_settings(tctx, tctx->lp_ctx),
+				     auth_context, &gensec_server_context);
+	torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
+
+	status = gensec_set_credentials(gensec_server_context, cmdline_credentials);
+	torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
+
+	status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
+	torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
+
+	server_to_client = data_blob(NULL, 0);
+	
+	do {
+		/* Do a client-server update dance */
+		status = gensec_update(gensec_client_context, tmp_ctx, tctx->ev, server_to_client, &client_to_server);
+		if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
+			torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
+		}
+
+		status = gensec_update(gensec_server_context, tmp_ctx, tctx->ev, client_to_server, &server_to_client);
+		if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
+			torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
+		}
+
+		if (NT_STATUS_IS_OK(status)) {
+			break;
+		}
+	} while (1);
+
+	/* Extract the PAC using Samba's code */
+
+	status = gensec_session_info(gensec_server_context, gensec_server_context, &session_info);
+	torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
+
+	pac_data = talloc_get_type(auth_context->private_data, struct pac_data);
+
+	torture_assert(tctx, pac_data != NULL, "gensec_update failed to fill in pac_data in auth_context");
+	torture_assert(tctx, pac_data->pac_blob.data != NULL, "pac_blob not present");
+
+					    /* TODO: Check the PAC blob with winbind */
+
+	return true;
+}
+
+
 
 NTSTATUS torture_winbind_init(void)
 {
@@ -27,6 +178,8 @@ NTSTATUS torture_winbind_init(void)
 
 	torture_suite_add_suite(suite, torture_winbind_struct_init());
 	torture_suite_add_suite(suite, torture_wbclient());
+	torture_suite_add_simple_test(suite,
+				      "pac", torture_winbind_pac);
 
 	suite->description = talloc_strdup(suite, "WINBIND tests");