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annotate USBLib/Windows/USB/UsbDevice.cs @ 58:fd63c453ff65

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Improved Windows USB enumeration classes
author Ivo Smits <Ivo@UCIS.nl>
date Wed, 09 Oct 2013 20:54:15 +0200
parents 5b14fed54a89
children 3424fa5a12c9
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1 using System;
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2 using System.Collections.Generic;
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3 using System.ComponentModel;
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4 using System.Runtime.InteropServices;
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5 using System.Text;
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6 using Microsoft.Win32.SafeHandles;
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7 using UCIS.HWLib.Windows.Devices;
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8 using UCIS.USBLib.Communication;
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9 using UCIS.USBLib.Descriptor;
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10 using UCIS.USBLib.Internal.Windows;
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12 namespace UCIS.HWLib.Windows.USB {
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13 public class UsbDevice : IUsbInterface {
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14 internal static SafeFileHandle OpenHandle(String path) {
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15 SafeFileHandle handle = Kernel32.CreateFile(path, Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_WRITE, IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero);
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16 if (handle.IsInvalid) throw new Win32Exception(Marshal.GetLastWin32Error());
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17 return handle;
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18 }
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19 internal static Boolean GetNodeInformation(SafeFileHandle handle, out USB_NODE_INFORMATION nodeInfo) {
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20 nodeInfo = new USB_NODE_INFORMATION();
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21 int nBytes = Marshal.SizeOf(typeof(USB_NODE_INFORMATION));
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22 return Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_INFORMATION, ref nodeInfo, nBytes, out nodeInfo, nBytes, out nBytes, IntPtr.Zero);
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23 }
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24 internal static Boolean GetNodeConnectionInformation(SafeFileHandle handle, UInt32 port, out USB_NODE_CONNECTION_INFORMATION_EX nodeConnection) {
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25 int nBytes = Marshal.SizeOf(typeof(USB_NODE_CONNECTION_INFORMATION_EX));
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26 nodeConnection = new USB_NODE_CONNECTION_INFORMATION_EX();
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27 nodeConnection.ConnectionIndex = port;
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28 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, ref nodeConnection, nBytes, out nodeConnection, nBytes, out nBytes, IntPtr.Zero))
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29 throw new Win32Exception(Marshal.GetLastWin32Error());
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30 return true;
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31 }
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32 internal static String GetNodeConnectionName(SafeFileHandle handle, UInt32 port) {
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33 int nBytes = Marshal.SizeOf(typeof(USB_NODE_CONNECTION_NAME));
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34 USB_NODE_CONNECTION_NAME nameConnection = new USB_NODE_CONNECTION_NAME();
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35 nameConnection.ConnectionIndex = port;
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36 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_NAME, ref nameConnection, nBytes, out nameConnection, nBytes, out nBytes, IntPtr.Zero))
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37 throw new Win32Exception(Marshal.GetLastWin32Error());
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38 return nameConnection.NodeName;
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39 }
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40 internal unsafe static int GetDescriptor(SafeFileHandle handle, UInt32 port, byte descriptorType, byte index, short langId, byte[] buffer, int offset, int length) {
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41 int szRequest = Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST));
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42 USB_DESCRIPTOR_REQUEST request = new USB_DESCRIPTOR_REQUEST();
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43 request.ConnectionIndex = port;
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44 request.SetupPacket.wValue = (ushort)((descriptorType << 8) + index);
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45 request.SetupPacket.wIndex = (ushort)langId;
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46 request.SetupPacket.wLength = (ushort)length;
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47 int nBytes = length + szRequest;
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48 Byte[] bigbuffer = new Byte[nBytes];
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49 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, ref request, Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST)), bigbuffer, nBytes, out nBytes, IntPtr.Zero)) {
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50 int err = Marshal.GetLastWin32Error();
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51 if (err != 2 && err != 31 && err != 87) throw new Win32Exception(err);
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52 return 0;
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53 }
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54 nBytes -= szRequest;
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55 if (nBytes > length) nBytes = length;
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56 if (nBytes < 0) return 0;
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57 if (nBytes > 0) Buffer.BlockCopy(bigbuffer, szRequest, buffer, offset, nBytes);
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58 return nBytes;
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59 }
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60 internal unsafe static String GetRootHubName(SafeFileHandle handle) {
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61 USB_ROOT_HUB_NAME rootHubName = new USB_ROOT_HUB_NAME();
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62 int nBytesReturned;
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63 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_ROOT_HUB_NAME, IntPtr.Zero, 0, out rootHubName, Marshal.SizeOf(rootHubName), out nBytesReturned, IntPtr.Zero))
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64 throw new Win32Exception(Marshal.GetLastWin32Error());
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65 if (rootHubName.ActualLength <= 0) return null;
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66 return rootHubName.RootHubName;
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67 }
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68 internal unsafe static String GetNodeConnectionDriverKey(SafeFileHandle handle, UInt32 port) {
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69 USB_NODE_CONNECTION_DRIVERKEY_NAME DriverKeyStruct = new USB_NODE_CONNECTION_DRIVERKEY_NAME();
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70 int nBytes = Marshal.SizeOf(DriverKeyStruct);
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71 DriverKeyStruct.ConnectionIndex = port;
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72 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_DRIVERKEY_NAME, ref DriverKeyStruct, nBytes, out DriverKeyStruct, nBytes, out nBytes, IntPtr.Zero))
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73 return null;
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74 return DriverKeyStruct.DriverKeyName;
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75 }
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76
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77 public UsbDevice Parent { get; protected set; }
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78 public string DevicePath { get; private set; }
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79 public uint AdapterNumber { get; private set; }
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80 internal USB_NODE_CONNECTION_INFORMATION_EX NodeConnectionInfo { get; set; }
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81 internal USB_DEVICE_DESCRIPTOR DeviceDescriptor { get { return NodeConnectionInfo.DeviceDescriptor; } }
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82
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83 public bool IsHub { get { return NodeConnectionInfo.DeviceIsHub != 0; } }
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84 public bool IsConnected { get { return NodeConnectionInfo.ConnectionStatus == USB_CONNECTION_STATUS.DeviceConnected; } }
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85 public string Status { get { return NodeConnectionInfo.ConnectionStatus.ToString(); } }
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86 public string Speed { get { return NodeConnectionInfo.Speed.ToString(); } }
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87
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88 SafeFileHandle OpenHandle() {
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89 return OpenHandle(DevicePath);
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90 }
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91
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92 public int NumConfigurations { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.bNumConfigurations; } }
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93 public int VendorID { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.idVendor; } }
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94 public int ProductID { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.idProduct; } }
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95
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96 private String GetStringSafe(Byte id) {
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97 if (id == 0) return null;
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98 String s = GetStringDescriptor(id);
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99 if (s == null) return s;
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100 return s.Trim(' ', '\0');
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101 }
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102
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103 public string Manufacturer { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iManufacturer); } }
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104 public string Product { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iProduct); } }
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105 public string SerialNumber { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iSerialNumber); } }
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106 public virtual string DriverKey { get { using (SafeFileHandle handle = OpenHandle(DevicePath)) return UsbHub.GetNodeConnectionDriverKey(handle, AdapterNumber); } }
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107
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108 public virtual string DeviceDescription { get { return DeviceNode == null ? null : DeviceNode.GetPropertyString(CMRDP.DEVICEDESC); } }
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109 public string DeviceID { get { return DeviceNode == null ? null : DeviceNode.DeviceID; } }
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110
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111 private DeviceNode mDeviceNode;
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112 public DeviceNode DeviceNode {
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113 get {
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114 String dk = DriverKey;
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115 if (mDeviceNode == null && dk != null) {
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116 foreach (DeviceNode node in DeviceNode.GetDevices("USB")) {
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117 if (dk.Equals(node.DriverKey, StringComparison.InvariantCultureIgnoreCase)) {
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118 mDeviceNode = node;
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119 break;
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120 }
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121 }
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122 }
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123 return mDeviceNode;
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124 }
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125 }
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126
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127 internal UsbDevice(UsbDevice parent, USB_NODE_CONNECTION_INFORMATION_EX nci, uint port, string devicePath) {
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128 this.Parent = parent;
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129 this.NodeConnectionInfo = nci;
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130 this.DevicePath = devicePath;
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131 this.AdapterNumber = port;
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132 if (devicePath == null) return;
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133 }
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134
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135 private String GetStringDescriptor(Byte index) {
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136 return UsbStringDescriptor.GetStringFromDevice(this, index, 0); //0x409
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137 }
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138
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139 static UsbDevice GetUsbDevice(DeviceNode node, out Boolean isHostController) {
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140 String[] hciinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_HOST_CONTROLLER);
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141 if (hciinterface != null && hciinterface.Length > 0) {
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142 isHostController = true;
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143 return (new UsbController(null, node, hciinterface[0])).RootHub;
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144 }
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145 isHostController = false;
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146 DeviceNode parent = node.GetParent();
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147 Boolean isHostControllerA;
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148 UsbDevice usbdev = GetUsbDevice(parent, out isHostControllerA);
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149 if (isHostControllerA) return usbdev;
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150 UsbHub usbhub = usbdev as UsbHub;
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151 if (usbhub == null) return null;
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152 String driverkey = node.DriverKey;
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153 foreach (UsbDevice child in usbhub.Devices) {
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154 if (driverkey.Equals(child.DriverKey, StringComparison.InvariantCultureIgnoreCase)) return child;
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155 }
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156 return null;
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157 }
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158 public static UsbDevice GetUsbDevice(DeviceNode node) {
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159 Boolean isHostController;
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160 return GetUsbDevice(node, out isHostController);
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161 /*
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162
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163 String[] hubinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_HUB);
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164 if (hubinterface != null && hubinterface.Length > 0) {
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165 USB_NODE_CONNECTION_INFORMATION_EX nodeConnection;
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166 using (SafeFileHandle handle = OpenHandle(hubinterface[0])) {
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167 if (!GetNodeConnectionInformation(handle, 0, out nodeConnection)) return null;
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168 }
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169 return new UsbHub(null, nodeConnection, hubinterface[0], false);
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170 }
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171 String[] devinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_DEVICE);
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172 if (devinterface == null || devinterface.Length == 0) return null;
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173 DeviceNode parent = node.GetParent();
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174 if (parent == null) return null;
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175 UsbHub usbhub = GetUsbDevice(parent) as UsbHub;
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176 if (usbhub == null) return null;
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177 String driverkey = node.DriverKey;
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178 foreach (UsbDevice usbdev in usbhub.Devices) {
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179 if (driverkey.Equals(usbdev.DriverKey, StringComparison.InvariantCultureIgnoreCase)) return usbdev;
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180 }
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181 return null;*/
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182 }
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183
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184 #region IUsbInterface Members
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185 byte IUsbInterface.Configuration { get { throw new NotImplementedException(); } }
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186 void IUsbInterface.Close() { }
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187 public virtual int GetDescriptor(byte descriptorType, byte index, short langId, byte[] buffer, int offset, int length) {
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188 using (SafeFileHandle handle = UsbHub.OpenHandle(DevicePath)) return UsbHub.GetDescriptor(handle, AdapterNumber, descriptorType, index, langId, buffer, offset, length);
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189 }
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190 string IUsbInterface.GetString(short langId, byte stringIndex) {
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191 return UsbStringDescriptor.GetStringFromDevice(this, stringIndex, langId);
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192 }
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193 int IUsbInterface.BulkWrite(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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194 int IUsbInterface.BulkRead(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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195 void IUsbInterface.BulkReset(byte endpoint) { throw new NotImplementedException(); }
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196 int IUsbInterface.InterruptWrite(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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197 int IUsbInterface.InterruptRead(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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198 void IUsbInterface.InterruptReset(byte endpoint) { throw new NotImplementedException(); }
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199 int IUsbInterface.ControlWrite(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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200 int IUsbInterface.ControlRead(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
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201 UsbPipeStream IUsbInterface.GetBulkStream(byte endpoint) { throw new NotImplementedException(); }
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202 UsbPipeStream IUsbInterface.GetInterruptStream(byte endpoint) { throw new NotImplementedException(); }
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203 void IDisposable.Dispose() { }
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204 #endregion
21
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205 }
58
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206
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207 }