2003-02-01 Anders Carlsson <andersca@codefactory.se>

	* bus/driver.c: (create_unique_client_name),
	(bus_driver_handle_hello):
	Don't take a name, just use a numeric id to identify
	each client.

	* dbus/Makefile.am:
	* dbus/dbus-bus.c: (dbus_bus_register_client),
	(dbus_bus_acquire_service), (dbus_bus_service_exists):
	* dbus/dbus-bus.h:
	Add new convenience functions for communicating with the bus.

	* dbus/dbus-message.h:

	* dbus/dbus-protocol.h:
	Fix a typo.

1 files changed, 192 insertions, 0 deletions

diff --git a/dbus/dbus-bus.c b/dbus/dbus-bus.c
new file mode 100644
index 00000000..6372c873
--- /dev/null
+++ b/dbus/dbus-bus.c
@@ -0,0 +1,192 @@
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* dbus-bus.h  Convenience functions for communicating with the bus.
+ *
+ * Copyright (C) 2003  CodeFactory AB
+ *
+ * Licensed under the Academic Free License version 1.2
+ * 
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "dbus-bus.h"
+#include "dbus-protocol.h"
+
+/**
+ * @defgroup DBusBus Convenience functinos for communicating with the bus.
+ * @ingroup DBus
+ * @brief Convenience functinos for communicating with the bus.
+ *
+ * @{
+ */
+
+/**
+ * Registers a connection with the bus. This is needed to send messages
+ * to other clients.
+ *
+ * @param connection The connection
+ * @param result address where a result code can be returned. 
+ * @returns the service name of which the client is known as.
+ */
+char *
+dbus_bus_register_client (DBusConnection *connection,
+			  DBusResultCode *result)
+{
+  DBusMessage *message, *reply;
+  DBusResultCode code;
+  char *name;
+  
+  message = dbus_message_new (DBUS_SERVICE_DBUS,
+			      DBUS_MESSAGE_HELLO);
+
+  if (!message)
+    {
+      dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+      return NULL;
+    }
+  
+  reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+
+  dbus_message_unref (message);
+  
+  if (!reply)
+    return NULL;
+
+  code = dbus_message_get_fields (reply,
+				  DBUS_TYPE_STRING, &name,
+				  0);
+  if (code != DBUS_RESULT_SUCCESS)
+    {
+      dbus_set_result (result, code);
+      return NULL;
+    }
+
+  dbus_set_result (result, DBUS_RESULT_SUCCESS);
+		   
+  return name;
+}
+
+/**
+ * Asks the bus to try to acquire a certain service.
+ *
+ * @param connection the connection
+ * @param service_name the service name
+ * @param flags flags
+ * @param result address where a result code can be returned. 
+ * @returns a result code.
+ */ 
+int
+dbus_bus_acquire_service (DBusConnection *connection,
+			  const char     *service_name,
+			  unsigned int    flags,
+			  DBusResultCode *result)
+{
+  DBusMessage *message, *reply;
+  int service_result;
+  DBusResultCode code;
+  
+  message = dbus_message_new (DBUS_SERVICE_DBUS,
+                              DBUS_MESSAGE_ACQUIRE_SERVICE);
+
+  if (!message)
+    {
+      dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+      return -1;
+    }
+ 
+  if (!dbus_message_append_fields (message,
+				   DBUS_TYPE_STRING, service_name,
+				   DBUS_TYPE_UINT32, flags,
+				   0))
+    {
+      dbus_message_unref (message);
+      dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+      return -1;
+    }
+  
+  reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+  dbus_message_unref (message);
+  
+  if (!reply)
+    return -1;
+
+  code = dbus_message_get_fields (reply,
+				  DBUS_TYPE_UINT32, &service_result,
+				  0);
+  if (code != DBUS_RESULT_SUCCESS)
+    {
+      dbus_set_result (result, code);
+      return -1;
+    }
+
+  dbus_set_result (result, DBUS_RESULT_SUCCESS);
+
+  return service_result;
+}
+
+/**
+ * Checks whether a certain service exists.
+ *
+ * @param connection the connection
+ * @param service_name the service name
+ * @param result address where a result code can be returned. 
+ * @returns #TRUE if the service exists, #FALSE otherwise.
+ */
+dbus_bool_t
+dbus_bus_service_exists (DBusConnection *connection,
+			 const char     *service_name,
+			 DBusResultCode *result)
+{
+  DBusMessage *message, *reply;
+  unsigned int exists;
+  DBusResultCode code;
+  
+  message = dbus_message_new (DBUS_SERVICE_DBUS,
+                              DBUS_MESSAGE_SERVICE_EXISTS);
+  if (!message)
+    {
+      dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+      return FALSE;
+    }
+  
+  if (!dbus_message_append_fields (message,
+				   DBUS_TYPE_STRING, service_name,
+				   0))
+    {
+      dbus_message_unref (message);
+      dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
+      return FALSE;
+    }
+  
+  reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
+  dbus_message_unref (message);
+
+  if (!reply)
+    return FALSE;
+
+  code = dbus_message_get_fields (reply,
+				  DBUS_TYPE_UINT32, &exists,
+				  0);
+  if (code != DBUS_RESULT_SUCCESS)
+    {
+      dbus_set_result (result, code);
+      return FALSE;
+    }
+  
+  dbus_set_result (result, DBUS_RESULT_SUCCESS);
+  return (result != FALSE);
+}
+
+/** @} */