- Added skeleton for new cddb_server.

- Includes all relevant handling of CDDA exported attributes so you guys can
  see where I am going with this.
 
CDDB handling (including server connection, request and response parsing)
will come up next. In the future we will also have a configuration panel
and a Deskbar replicant for controlling it.

Do we really have to edit the Jamfile in the parent dir to get something
building with our build system?



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27096 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/Jamfile

@@ -2,6 +2,7 @@ SubDir HAIKU_TOP src servers ;
 
 SubInclude HAIKU_TOP src servers app ;
 SubInclude HAIKU_TOP src servers bluetooth ;
+SubInclude HAIKU_TOP src servers cddb_daemon ;
 SubInclude HAIKU_TOP src servers debug ;
 SubInclude HAIKU_TOP src servers input ;
 SubInclude HAIKU_TOP src servers mail ;

src/servers/cddb_daemon/Jamfile

@@ -0,0 +1,6 @@
+SubDir HAIKU_TOP src servers cddb_daemon ;
+
+Server cddb_daemon :
+	cddb_daemon.cpp
+	: be
+	;

src/servers/cddb_daemon/cddb_daemon.cpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright 2008, Bruno Albuquerque, bga@bug-br.org.br. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include "cddb_daemon.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <Directory.h>
+#include <NodeMonitor.h>
+#include <Volume.h>
+
+#include <fs_info.h>
+
+
+static const char* kCddaFsName = "cdda";
+
+
+CDDBDaemon::CDDBDaemon()
+	: BApplication("application/x-vnd.Haiku-CDDBDaemon")
+	, _volumeRoster(new BVolumeRoster)
+{
+	_volumeRoster->StartWatching();
+
+	BVolume volume;
+	while (_volumeRoster->GetNextVolume(&volume) == B_OK) {
+		uint32 cddbId;
+		if (CanLookup(volume.Device(), &cddbId)) {
+			printf("CD can be looked up. CDDB id = %lu.\n", cddbId);
+			// TODO(bga): Implement and enable CDDB database lookup.
+		}
+	}
+}
+
+
+CDDBDaemon::~CDDBDaemon()
+{
+	_volumeRoster->StopWatching();
+	delete _volumeRoster;
+}
+
+
+void
+CDDBDaemon::MessageReceived(BMessage* message)
+{
+	switch(message->what) {
+		case B_NODE_MONITOR:
+			int32 opcode;
+			if (message->FindInt32("opcode", &opcode) == B_OK) {
+				if (opcode == B_DEVICE_MOUNTED) {
+					dev_t device;
+					if (message->FindInt32("new device", &device) == B_OK) {
+						uint32 cddbId;
+						if (CanLookup(device, &cddbId)) {
+							printf("CD can be looked up. CDDB id = %lu.\n",
+								cddbId);
+							// TODO(bga): Implement and enable CDDB database lookup.
+						}
+					}
+				}		
+			}
+			break;
+		default:
+			BApplication::MessageReceived(message);
+	}
+}
+
+
+bool
+CDDBDaemon::CanLookup(const dev_t device, uint32* cddbId) const
+{
+	// Is it an Audio disk?
+	fs_info info;
+	fs_stat_dev(device, &info);
+	if (strncmp(info.fsh_name, kCddaFsName, strlen(kCddaFsName)) != 0)
+		return false;
+
+	// Does it have the CD:do_lookup attribute and is it true?
+	BVolume volume(device);
+	BDirectory directory;
+	volume.GetRootDirectory(&directory);
+
+	bool doLookup;
+	if (directory.ReadAttr("CD:do_lookup", B_BOOL_TYPE, 0, (void *)&doLookup,
+		sizeof(bool)) < B_OK || !doLookup)
+		return false;
+
+	// Does it have the CD:cddbid attribute?
+	if (directory.ReadAttr("CD:cddbid", B_UINT32_TYPE, 0, (void *)cddbId,
+		sizeof(uint32)) < B_OK)
+		return false;		
+
+	return true;
+}
+
+
+int main(void) {
+	CDDBDaemon* cddbDaemon = new CDDBDaemon();
+	cddbDaemon->Run();
+	delete cddbDaemon; 
+}

src/servers/cddb_daemon/cddb_daemon.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2008, Bruno Albuquerque, bga@bug-br.org.br. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef CDDB_DAEMON_H
+#define CDDB_DAEMON_H
+
+#include <Application.h>
+#include <Message.h>
+#include <VolumeRoster.h>
+
+class CDDBDaemon : public BApplication
+{
+public:
+	CDDBDaemon();
+	virtual ~CDDBDaemon();
+
+	virtual void MessageReceived(BMessage* message);
+
+private:
+	bool CanLookup(const dev_t device, uint32* cddbId) const;
+
+	BVolumeRoster* _volumeRoster;
+};
+
+#endif