s3-spoolss: Added a function to open a regkey using the winreg pipe.

Signed-off-by: Günther Deschner <gd@samba.org>

2 files changed, 192 insertions, 0 deletions

diff --git a/source3/rpc_server/srv_spoolss_util.c b/source3/rpc_server/srv_spoolss_util.c
new file mode 100644
index 0000000000..63178b3c90
--- /dev/null
+++ b/source3/rpc_server/srv_spoolss_util.c
@@ -0,0 +1,167 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *
+ *  SPOOLSS RPC Pipe server / winreg client routines
+ *
+ *  Copyright (c) 2010      Andreas Schneider <asn@samba.org>
+ *
+ *  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 "srv_spoolss_util.h"
+#include "../librpc/gen_ndr/srv_winreg.h"
+#include "../librpc/gen_ndr/cli_winreg.h"
+
+/**
+ * @internal
+ *
+ * @brief Connect to the interal winreg server and open the given printer key.
+ *
+ * The function will create the needed subkeys if they don't exist.
+ *
+ * @param[in]  mem_ctx       The memory context to use.
+ *
+ * @param[in]  server_info   The supplied server info.
+ *
+ * @param[out] winreg_pipe   A pointer for the winreg rpc client pipe.
+ *
+ * @param[in]  name          The name of the printer.
+ *
+ * @param[in]  key           The key to open.
+ *
+ * @param[in]  create_key    Set to true if the key should be created if it
+ *                           doesn't exist.
+ *
+ * @param[in]  access_mask   The access mask to open the key.
+ *
+ * @param[out] hive_handle   A policy handle for the opened hive.
+ *
+ * @param[out] key_handle    A policy handle for the opened key.
+ *
+ * @return                   WERR_OK on success, the corresponding DOS error
+ *                           code if something gone wrong.
+ */
+static WERROR winreg_printer_openkey(TALLOC_CTX *mem_ctx,
+			      struct auth_serversupplied_info *server_info,
+			      struct rpc_pipe_client **winreg_pipe,
+			      const char *name,
+			      const char *key,
+			      bool create_key,
+			      uint32_t access_mask,
+			      struct policy_handle *hive_handle,
+			      struct policy_handle *key_handle)
+{
+	struct rpc_pipe_client *pipe_handle;
+	struct winreg_String wkey, wkeyclass;
+	char *keyname;
+	NTSTATUS status;
+	WERROR result = WERR_OK;
+
+	/* create winreg connection */
+	status = rpc_pipe_open_internal(mem_ctx,
+					&ndr_table_winreg.syntax_id,
+					rpc_winreg_dispatch,
+					server_info,
+					&pipe_handle);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("winreg_printer_openkey: Could not connect to winreg_pipe: %s\n",
+			  nt_errstr(status)));
+		return ntstatus_to_werror(status);
+	}
+
+	status = rpccli_winreg_OpenHKLM(pipe_handle,
+					mem_ctx,
+					NULL,
+					access_mask,
+					hive_handle,
+					&result);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("winreg_printer_openkey: Could not open HKLM hive: %s\n",
+			  nt_errstr(status)));
+		talloc_free(pipe_handle);
+		if (!W_ERROR_IS_OK(result)) {
+			return result;
+		}
+		return ntstatus_to_werror(status);
+	}
+
+	if (key && *key) {
+		keyname = talloc_asprintf(mem_ctx,
+				    "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\Printers\\%s\\%s",
+				    name,
+				    key);
+	} else {
+		keyname = talloc_asprintf(mem_ctx,
+				    "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\Printers\\%s",
+				    name);
+	}
+	if (keyname == NULL) {
+		talloc_free(pipe_handle);
+		return WERR_NOMEM;
+	}
+
+	ZERO_STRUCT(wkey);
+	wkey.name = keyname;
+
+	if (create_key) {
+		enum winreg_CreateAction action = REG_ACTION_NONE;
+
+		ZERO_STRUCT(wkeyclass);
+		wkeyclass.name = "";
+
+		status = rpccli_winreg_CreateKey(pipe_handle,
+						 mem_ctx,
+						 hive_handle,
+						 wkey,
+						 wkeyclass,
+						 0,
+						 access_mask,
+						 NULL,
+						 key_handle,
+						 &action,
+						 &result);
+		switch (action) {
+			case REG_ACTION_NONE:
+				DEBUG(8, ("winreg_printer_openkey:createkey did nothing -- huh?\n"));
+				break;
+			case REG_CREATED_NEW_KEY:
+				DEBUG(8, ("winreg_printer_openkey: createkey created %s\n", keyname));
+				break;
+			case REG_OPENED_EXISTING_KEY:
+				DEBUG(8, ("winreg_printer_openkey: createkey opened existing %s\n", keyname));
+				break;
+		}
+	} else {
+		status = rpccli_winreg_OpenKey(pipe_handle,
+					       mem_ctx,
+					       hive_handle,
+					       wkey,
+					       0,
+					       access_mask,
+					       key_handle,
+					       &result);
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(pipe_handle);
+		if (!W_ERROR_IS_OK(result)) {
+			return result;
+		}
+		return ntstatus_to_werror(status);
+	}
+
+	*winreg_pipe = pipe_handle;
+
+	return WERR_OK;
+}
diff --git a/source3/rpc_server/srv_spoolss_util.h b/source3/rpc_server/srv_spoolss_util.h
new file mode 100644
index 0000000000..3118bbc835
--- /dev/null
+++ b/source3/rpc_server/srv_spoolss_util.h
@@ -0,0 +1,25 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *
+ *  SPOOLSS RPC Pipe server / winreg client routines
+ *
+ *  Copyright (c) 2010      Andreas Schneider <asn@samba.org>
+ *
+ *  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/>.
+ */
+
+#ifndef _SRV_SPOOLSS_UITL_H
+#define _SRV_SPOOLSS_UITL_H
+
+#endif /* _SRV_SPOOLSS_UITL_H */