/// <summary>
/// Releases a CFObjects handle.
/// </summary>
/// <param name="obj">The object to release.</param>
internal static IOObject IOIteratorNext(IOObject obj) {
var result = NativeMethods.IOIteratorNext(obj.Handle);
if (result != IntPtr.Zero) {
return new IOObject(result);
}
return null;
}
/// <summary>
/// Releases a CFObjects handle.
/// </summary>
/// <param name="obj">The object to release.</param>
internal static void IOObjectRelease(IOObject obj)
{
NativeMethods.IOObjectRelease(obj.Handle);
}
/// <summary>
/// Gets a dictionary value.
/// </summary>
/// <param name="dictionary">The dictionary to use.</param>
/// <param name="key">The key to look up.</param>
/// <param name="value">Receives the value.</param>
/// <returns>An integer.</returns>
public static int GetCFPropertyInt(IOObject dictionary, string key, out int value) {
var kernResult = KERN_FAILURE;
var bsdPathAsCFValue = NativeMethods.IORegistryEntrySearchCFProperty(dictionary.Handle, kIOServicePlane, NativeMethods.__CFStringMakeConstantString(key), kCFAllocatorDefault, kIORegistryIterateRecursively);
//var bsdPathAsCFString = IORegistryEntryCreateCFProperty(modemService, __CFStringMakeConstantString(key), kCFAllocatorDefault, 0);
if (bsdPathAsCFValue != IntPtr.Zero) {
// Convert the value from a CFNumber to an integer.
try {
var bsdValue = IntPtr.Zero;
var result = NativeMethods.CFNumberGetValue(bsdPathAsCFValue, CFNumberType.kCFNumberIntType, out bsdValue);
if (result) {
kernResult = KERN_SUCCESS;
value = bsdValue.ToInt32();
} else {
value = 0;
}
} finally {
NativeMethods.CFRelease (bsdPathAsCFValue);
}
} else {
value = 0;
}
return kernResult;
}
/// <summary>
/// Releases a CFObjects handle.
/// </summary>
/// <param name="obj">The object to release.</param>
internal static void IOObjectRelease(IOObject obj) {
NativeMethods.IOObjectRelease(obj.Handle);
}
/// <summary>
/// Gets a dictionary value.
/// </summary>
/// <param name="dictionary">The dictionary to use.</param>
/// <param name="key">The key to look up.</param>
/// <returns>A string on sucess; Otherwise, null.</returns>
public static int GetCFPropertyInt(IOObject dictionary, string key) {
var result = 0;
var kernResult = GetCFPropertyInt(dictionary, key, out result);
if (kernResult == KERN_SUCCESS) {
return result;
}
return 0;
}
/// <summary>
/// Gets a dictionary value.
/// </summary>
/// <param name="dictionary">The dictionary to use.</param>
/// <param name="key">The key to look up.</param>
/// <param name="value">Receives the value.</param>
/// <returns>KERN_SUCCESS on success.</returns>
public static int GetCFPropertyString(IOObject dictionary, string key, out string value) {
var maxValueSize = 4096;
var kernResult = KERN_FAILURE;
var bsdPathAsCFValue = NativeMethods.IORegistryEntrySearchCFProperty(dictionary.Handle, kIOServicePlane, NativeMethods.__CFStringMakeConstantString(key), kCFAllocatorDefault, kIORegistryIterateRecursively);
// var bsdPathAsCFString = IORegistryEntryCreateCFProperty(modemService, __CFStringMakeConstantString(key), kCFAllocatorDefault, 0);
if (bsdPathAsCFValue != IntPtr.Zero) {
// Convert the value from a CFString to a C (NULL-terminated) string.
try {
unsafe {
fixed (char* bsdValue = new char[maxValueSize]) {
var result = NativeMethods.CFStringGetCString (bsdPathAsCFValue, bsdValue, maxValueSize, CFStringEncoding.kCFStringEncodingUTF8);
if (result) {
kernResult = KERN_SUCCESS;
value = Marshal.PtrToStringAnsi ((IntPtr)bsdValue);
} else {
value = null;
}
}
}
} finally {
NativeMethods.CFRelease (bsdPathAsCFValue);
}
} else {
value = null;
}
return kernResult;
}
/// <summary>
/// Gets a dictionary value.
/// </summary>
/// <param name="dictionary">The dictionary to use.</param>
/// <param name="key">The key to look up.</param>
/// <returns>A string on sucess; Otherwise, null.</returns>
public static string GetCFPropertyString(IOObject dictionary, string key) {
var value = String.Empty;
var kernResult = GetCFPropertyString(dictionary, key, out value);
if (kernResult == KERN_SUCCESS) {
return value;
}
return null;
}
/// <summary>
/// Gets the corresponding USB device of a modem service.
/// </summary>
/// <param name="modemService">A modem service.</param>
/// <returns>An instance of a <see cref="CFObject"/> on success; Otherwise, false.</returns>
public static IOObject GetUSBDevice(IOObject modemService) {
var device = NativeMethods.GetUsbDevice(modemService.Handle);
if (device != IntPtr.Zero) {
return new IOObject(device);
}
return null;
}
/// <summary>
/// Gets the path of the given modem service.
/// </summary>
/// <param name="modemService">The modem service whose path will be looked up.</param>
/// <returns>A string.</returns>
public static string GetModemPath(IOObject modemService) {
var modemPath = String.Empty;
var kernResult = NativeMethods.GetModemPath(modemService.Handle, out modemPath);
if (kernResult != KERN_SUCCESS) {
return null;
}
return modemPath;
}
