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/**
* Oshi (https://github.com/dblock/oshi)
*
* Copyright (c) 2010 - 2016 The Oshi Project Team
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Maintainers:
* dblock[at]dblock[dot]org
* widdis[at]gmail[dot]com
* enrico.bianchi[at]gmail[dot]com
*
* Contributors:
* https://github.com/dblock/oshi/graphs/contributors
*/
package oshi.util.platform.mac;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.ptr.PointerByReference;
import oshi.jna.platform.mac.CoreFoundation;
import oshi.jna.platform.mac.CoreFoundation.CFMutableDictionaryRef;
import oshi.jna.platform.mac.CoreFoundation.CFStringRef;
import oshi.jna.platform.mac.CoreFoundation.CFTypeRef;
import oshi.jna.platform.mac.IOKit;
import oshi.jna.platform.mac.IOKit.MachPort;
/**
* Provides utilities for IOKit
*
* @author widdis[at]gmail[dot]com
*/
public class IOKitUtil {
private static final Logger LOG = LoggerFactory.getLogger(IOKitUtil.class);
private static MachPort masterPort = new MachPort();
/**
* Sets the masterPort value
*
* @return 0 if the value was successfully set, error value otherwise
*/
private static int setMasterPort() {
if (masterPort.getValue() == 0) {
int result = IOKit.INSTANCE.IOMasterPort(0, masterPort);
if (result != 0) {
LOG.error(String.format("Error: IOMasterPort() = %08x", result));
return result;
}
}
return 0;
}
/**
* Gets the IO Registry root
*
* @return an int handle to the IORoot
*/
public static int getRoot() {
if (setMasterPort() == 0) {
int root = IOKit.INSTANCE.IORegistryGetRootEntry(masterPort.getValue());
if (root == 0) {
LOG.error("No IO Root found.");
}
return root;
}
return 0;
}
/**
* Opens an IOService matching the given name
*
* @param serviceName
* The service name to match
* @return an int handle to an IOService if successful, 0 if failed
*/
public static int getMatchingService(String serviceName) {
if (setMasterPort() == 0) {
int service = IOKit.INSTANCE.IOServiceGetMatchingService(masterPort.getValue(),
IOKit.INSTANCE.IOServiceMatching(serviceName));
if (service == 0) {
LOG.error("No service found: {}", serviceName);
}
return service;
}
return 0;
}
/**
* Convenience method to get matching IOService objects
*
* @param serviceName
* The service name to match
* @param serviceIterator
* An interator over matching items, set on return
* @return 0 if successful, an error code if failed.
*/
public static int getMatchingServices(String serviceName, IntByReference serviceIterator) {
int setMasterPort = setMasterPort();
if (setMasterPort == 0) {
return IOKit.INSTANCE.IOServiceGetMatchingServices(masterPort.getValue(),
IOKit.INSTANCE.IOServiceMatching(serviceName), serviceIterator);
}
return setMasterPort;
}
/**
* Convenience method to get matching IOService objects
*
* @param matchingDictionary
* The dictionary to match
* @param serviceIterator
* An interator over matching items, set on return
* @return 0 if successful, an error code if failed.
*/
public static int getMatchingServices(CFMutableDictionaryRef matchingDictionary, IntByReference serviceIterator) {
int setMasterPort = setMasterPort();
if (setMasterPort == 0) {
return IOKit.INSTANCE.IOServiceGetMatchingServices(masterPort.getValue(), matchingDictionary,
serviceIterator);
}
return setMasterPort;
}
/**
* Convenience method to get a String value from an IO Registry
*
* @param entry
* A handle to the registry entry
* @param key
* The string name of the key to retrieve
* @return The value of the registry entry if it exists; null otherwise
*/
public static String getIORegistryStringProperty(int entry, String key) {
String value = null;
CFStringRef keyAsCFString = CfUtil.getCFString(key);
CFTypeRef valueAsCFString = IOKit.INSTANCE.IORegistryEntryCreateCFProperty(entry, keyAsCFString,
CoreFoundation.INSTANCE.CFAllocatorGetDefault(), 0);
if (valueAsCFString != null && valueAsCFString.getPointer() != null) {
value = CfUtil.cfPointerToString(valueAsCFString.getPointer());
}
CfUtil.release(valueAsCFString);
return value;
}
/**
* Convenience method to get a Long value from an IO Registry
*
* @param entry
* A handle to the registry entry
* @param key
* The string name of the key to retrieve
* @return The value of the registry entry if it exists; 0 otherwise
*/
public static long getIORegistryLongProperty(int entry, String key) {
long value = 0L;
CFStringRef keyAsCFString = CfUtil.getCFString(key);
CFTypeRef valueAsCFNumber = IOKit.INSTANCE.IORegistryEntryCreateCFProperty(entry, keyAsCFString,
CoreFoundation.INSTANCE.CFAllocatorGetDefault(), 0);
if (valueAsCFNumber != null && valueAsCFNumber.getPointer() != null) {
value = CfUtil.cfPointerToLong(valueAsCFNumber.getPointer());
}
CfUtil.release(valueAsCFNumber);
return value;
}
/**
* Convenience method to get a byte array value from an IO Registry
*
* @param entry
* A handle to the registry entry
* @param key
* The string name of the key to retrieve
* @return The value of the registry entry if it exists; null otherwise
*/
public static byte[] getIORegistryByteArrayProperty(int entry, String key) {
byte[] value = null;
CFStringRef keyAsCFString = CfUtil.getCFString(key);
CFTypeRef valueAsCFData = IOKit.INSTANCE.IORegistryEntryCreateCFProperty(entry, keyAsCFString,
CoreFoundation.INSTANCE.CFAllocatorGetDefault(), 0);
if (valueAsCFData != null && valueAsCFData.getPointer() != null) {
int length = CoreFoundation.INSTANCE.CFDataGetLength(valueAsCFData);
PointerByReference p = CoreFoundation.INSTANCE.CFDataGetBytePtr(valueAsCFData);
value = p.getPointer().getByteArray(0, length);
}
CfUtil.release(valueAsCFData);
return value;
}
/**
* Convenience method to get the IO dictionary matching a bsd name
*
* @param bsdName
* The bsd name of the registry entry
* @return The dictionary ref
*/
public static CFMutableDictionaryRef getBSDNameMatchingDict(String bsdName) {
if (setMasterPort() == 0) {
return IOKit.INSTANCE.IOBSDNameMatching(masterPort.getValue(), 0, bsdName);
}
return null;
}
}
