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https://github.com/aaru-dps/Aaru.Server.git
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411 lines
19 KiB
C#
411 lines
19 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Constructor.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Direct device access.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Prepares a device for direct access.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2016 Natalia Portillo
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// ****************************************************************************/
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using System;
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using Microsoft.Win32.SafeHandles;
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using System.Runtime.InteropServices;
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using DiscImageChef.Decoders.ATA;
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namespace DiscImageChef.Devices
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{
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public partial class Device
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{
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/// <summary>
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/// Opens the device for sending direct commands
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/// </summary>
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/// <param name="devicePath">Device path</param>
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public Device(string devicePath)
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{
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platformID = Interop.DetectOS.GetRealPlatformID();
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Timeout = 15;
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error = false;
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removable = false;
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switch(platformID)
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{
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case Interop.PlatformID.Win32NT:
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{
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fd = Windows.Extern.CreateFile(devicePath,
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Windows.FileAccess.GenericRead | Windows.FileAccess.GenericWrite,
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Windows.FileShare.Read | Windows.FileShare.Write,
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IntPtr.Zero, Windows.FileMode.OpenExisting,
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Windows.FileAttributes.Normal, IntPtr.Zero);
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if(((SafeFileHandle)fd).IsInvalid)
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{
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error = true;
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lastError = Marshal.GetLastWin32Error();
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}
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break;
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}
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case Interop.PlatformID.Linux:
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{
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fd = Linux.Extern.open(devicePath, Linux.FileFlags.Readonly | Linux.FileFlags.NonBlocking);
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if((int)fd < 0)
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{
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error = true;
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lastError = Marshal.GetLastWin32Error();
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}
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break;
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}
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default:
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throw new InvalidOperationException(string.Format("Platform {0} not yet supported.", platformID));
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}
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if(error)
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throw new SystemException(string.Format("Error {0} opening device.", lastError));
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type = DeviceType.Unknown;
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scsiType = Decoders.SCSI.PeripheralDeviceTypes.UnknownDevice;
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AtaErrorRegistersCHS errorRegisters;
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byte[] ataBuf;
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byte[] senseBuf;
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byte[] inqBuf;
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bool scsiSense = ScsiInquiry(out inqBuf, out senseBuf);
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if(error)
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throw new SystemException(string.Format("Error {0} trying device.", lastError));
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#region USB
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if(platformID == Interop.PlatformID.Linux)
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{
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if(devicePath.StartsWith("/dev/sd", StringComparison.Ordinal) || devicePath.StartsWith("/dev/sr", StringComparison.Ordinal) || devicePath.StartsWith("/dev/st", StringComparison.Ordinal))
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{
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string devPath = devicePath.Substring(5);
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if(System.IO.Directory.Exists("/sys/block/" + devPath))
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{
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string resolvedLink = Linux.Command.ReadLink("/sys/block/" + devPath);
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resolvedLink = "/sys" + resolvedLink.Substring(2);
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if(!string.IsNullOrEmpty(resolvedLink))
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{
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while(resolvedLink.Contains("usb"))
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{
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resolvedLink = System.IO.Path.GetDirectoryName(resolvedLink);
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if(System.IO.File.Exists(resolvedLink + "/descriptors") &&
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System.IO.File.Exists(resolvedLink + "/idProduct") &&
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System.IO.File.Exists(resolvedLink + "/idVendor"))
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{
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System.IO.FileStream usbFs;
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System.IO.StreamReader usbSr;
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string usbTemp;
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usbFs = new System.IO.FileStream(resolvedLink + "/descriptors", System.IO.FileMode.Open, System.IO.FileAccess.Read);
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byte[] usbBuf = new byte[65536];
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int usbCount = usbFs.Read(usbBuf, 0, 65536);
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usbDescriptors = new byte[usbCount];
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Array.Copy(usbBuf, 0, usbDescriptors, 0, usbCount);
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usbFs.Close();
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usbSr = new System.IO.StreamReader(resolvedLink + "/idProduct");
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usbTemp = usbSr.ReadToEnd();
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ushort.TryParse(usbTemp, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out usbProduct);
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usbSr.Close();
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usbSr = new System.IO.StreamReader(resolvedLink + "/idVendor");
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usbTemp = usbSr.ReadToEnd();
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ushort.TryParse(usbTemp, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out usbVendor);
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usbSr.Close();
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if(System.IO.File.Exists(resolvedLink + "/manufacturer"))
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{
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usbSr = new System.IO.StreamReader(resolvedLink + "/manufacturer");
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usbManufacturerString = usbSr.ReadToEnd().Trim();
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usbSr.Close();
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}
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if(System.IO.File.Exists(resolvedLink + "/product"))
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{
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usbSr = new System.IO.StreamReader(resolvedLink + "/product");
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usbProductString = usbSr.ReadToEnd().Trim();
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usbSr.Close();
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}
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if(System.IO.File.Exists(resolvedLink + "/serial"))
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{
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usbSr = new System.IO.StreamReader(resolvedLink + "/serial");
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usbSerialString = usbSr.ReadToEnd().Trim();
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usbSr.Close();
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}
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usb = true;
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break;
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}
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}
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}
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}
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}
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}
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// TODO: Implement for other operating systems
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else
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usb = false;
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#endregion USB
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#region FireWire
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if(platformID == Interop.PlatformID.Linux)
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{
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if(devicePath.StartsWith("/dev/sd", StringComparison.Ordinal) || devicePath.StartsWith("/dev/sr", StringComparison.Ordinal) || devicePath.StartsWith("/dev/st", StringComparison.Ordinal))
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{
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string devPath = devicePath.Substring(5);
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if(System.IO.Directory.Exists("/sys/block/" + devPath))
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{
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string resolvedLink = Linux.Command.ReadLink("/sys/block/" + devPath);
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resolvedLink = "/sys" + resolvedLink.Substring(2);
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if(!string.IsNullOrEmpty(resolvedLink))
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{
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while(resolvedLink.Contains("firewire"))
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{
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resolvedLink = System.IO.Path.GetDirectoryName(resolvedLink);
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if(System.IO.File.Exists(resolvedLink + "/model") &&
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System.IO.File.Exists(resolvedLink + "/vendor") &&
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System.IO.File.Exists(resolvedLink + "/guid"))
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{
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System.IO.StreamReader fwSr;
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string fwTemp;
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fwSr = new System.IO.StreamReader(resolvedLink + "/model");
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fwTemp = fwSr.ReadToEnd();
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uint.TryParse(fwTemp, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out firewireModel);
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fwSr.Close();
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fwSr = new System.IO.StreamReader(resolvedLink + "/vendor");
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fwTemp = fwSr.ReadToEnd();
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uint.TryParse(fwTemp, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out firewireVendor);
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fwSr.Close();
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fwSr = new System.IO.StreamReader(resolvedLink + "/guid");
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fwTemp = fwSr.ReadToEnd();
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ulong.TryParse(fwTemp, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out firewireGuid);
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fwSr.Close();
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if(System.IO.File.Exists(resolvedLink + "/model_name"))
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{
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fwSr = new System.IO.StreamReader(resolvedLink + "/model_name");
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firewireModelName = fwSr.ReadToEnd().Trim();
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fwSr.Close();
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}
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if(System.IO.File.Exists(resolvedLink + "/vendor_name"))
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{
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fwSr = new System.IO.StreamReader(resolvedLink + "/vendor_name");
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firewireVendorName = fwSr.ReadToEnd().Trim();
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fwSr.Close();
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}
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firewire = true;
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break;
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}
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}
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}
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}
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}
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}
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// TODO: Implement for other operating systems
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else
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firewire = false;
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#endregion FireWire
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#region PCMCIA
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if(platformID == Interop.PlatformID.Linux)
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{
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if(devicePath.StartsWith("/dev/sd", StringComparison.Ordinal) || devicePath.StartsWith("/dev/sr", StringComparison.Ordinal) || devicePath.StartsWith("/dev/st", StringComparison.Ordinal))
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{
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string devPath = devicePath.Substring(5);
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if(System.IO.Directory.Exists("/sys/block/" + devPath))
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{
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string resolvedLink = Linux.Command.ReadLink("/sys/block/" + devPath);
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resolvedLink = "/sys" + resolvedLink.Substring(2);
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if(!string.IsNullOrEmpty(resolvedLink))
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{
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while(resolvedLink.Contains("/sys/devices"))
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{
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resolvedLink = System.IO.Path.GetDirectoryName(resolvedLink);
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if(System.IO.Directory.Exists(resolvedLink + "/pcmcia_socket"))
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{
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string[] subdirs = System.IO.Directory.GetDirectories(resolvedLink + "/pcmcia_socket", "pcmcia_socket*", System.IO.SearchOption.TopDirectoryOnly);
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if(subdirs.Length > 0)
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{
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string possibleDir = System.IO.Path.Combine(resolvedLink, "pcmcia_socket", subdirs[0]);
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if(System.IO.File.Exists(possibleDir + "/card_type") &&
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System.IO.File.Exists(possibleDir + "/cis"))
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{
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System.IO.FileStream cisFs;
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cisFs = new System.IO.FileStream(possibleDir + "/cis", System.IO.FileMode.Open, System.IO.FileAccess.Read);
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byte[] cisBuf = new byte[65536];
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int cisCount = cisFs.Read(cisBuf, 0, 65536);
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cis = new byte[cisCount];
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Array.Copy(cisBuf, 0, cis, 0, cisCount);
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cisFs.Close();
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pcmcia = true;
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break;
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}
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}
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}
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}
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}
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}
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}
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}
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// TODO: Implement for other operating systems
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else
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pcmcia = false;
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#endregion PCMCIA
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if(!scsiSense)
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{
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Decoders.SCSI.Inquiry.SCSIInquiry? Inquiry = Decoders.SCSI.Inquiry.Decode(inqBuf);
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type = DeviceType.SCSI;
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bool serialSense = ScsiInquiry(out inqBuf, out senseBuf, 0x80);
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if(!serialSense)
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serial = Decoders.SCSI.EVPD.DecodePage80(inqBuf);
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if(Inquiry.HasValue)
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{
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string tmp = StringHandlers.CToString(Inquiry.Value.ProductRevisionLevel);
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if(tmp != null)
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revision = tmp.Trim();
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tmp = StringHandlers.CToString(Inquiry.Value.ProductIdentification);
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if(tmp != null)
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model = tmp.Trim();
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tmp = StringHandlers.CToString(Inquiry.Value.VendorIdentification);
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if(tmp != null)
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manufacturer = tmp.Trim();
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removable = Inquiry.Value.RMB;
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scsiType = (Decoders.SCSI.PeripheralDeviceTypes)Inquiry.Value.PeripheralDeviceType;
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}
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bool atapiSense = AtapiIdentify(out ataBuf, out errorRegisters);
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if(!atapiSense)
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{
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type = DeviceType.ATAPI;
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Identify.IdentifyDevice? ATAID = Identify.Decode(ataBuf);
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if(ATAID.HasValue)
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serial = ATAID.Value.SerialNumber;
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}
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}
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if((scsiSense && (usb || firewire)) || manufacturer == "ATA")
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{
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bool ataSense = AtaIdentify(out ataBuf, out errorRegisters);
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if(!ataSense)
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{
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type = DeviceType.ATA;
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Identify.IdentifyDevice? ATAID = Identify.Decode(ataBuf);
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if(ATAID.HasValue)
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{
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string[] separated = ATAID.Value.Model.Split(' ');
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if(separated.Length == 1)
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model = separated[0];
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else
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{
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manufacturer = separated[0];
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model = separated[separated.Length - 1];
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}
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revision = ATAID.Value.FirmwareRevision;
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serial = ATAID.Value.SerialNumber;
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scsiType = Decoders.SCSI.PeripheralDeviceTypes.DirectAccess;
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if((ushort)ATAID.Value.GeneralConfiguration != 0x848A)
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{
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removable |= (ATAID.Value.GeneralConfiguration & Identify.GeneralConfigurationBit.Removable) == Identify.GeneralConfigurationBit.Removable;
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}
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else
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compactFlash = true;
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}
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}
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}
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if(type == DeviceType.Unknown)
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{
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manufacturer = null;
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model = null;
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revision = null;
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serial = null;
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}
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if(usb)
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{
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if(string.IsNullOrEmpty(manufacturer))
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manufacturer = usbManufacturerString;
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if(string.IsNullOrEmpty(model))
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model = usbProductString;
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if(string.IsNullOrEmpty(serial))
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serial = usbSerialString;
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else
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{
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foreach(char c in serial)
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{
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if(char.IsControl(c))
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serial = usbSerialString;
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}
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}
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}
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if(firewire)
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{
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if(string.IsNullOrEmpty(manufacturer))
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manufacturer = firewireVendorName;
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if(string.IsNullOrEmpty(model))
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model = firewireModelName;
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if(string.IsNullOrEmpty(serial))
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serial = string.Format("{0:X16}", firewireGuid);
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else
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{
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foreach(char c in serial)
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{
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if(char.IsControl(c))
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serial = string.Format("{0:X16}", firewireGuid);
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}
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}
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}
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}
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}
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}
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