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108 lines
2.8 KiB
Plaintext
108 lines
2.8 KiB
Plaintext
9 months ago
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namespace BP
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{
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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public class FtpStream : Stream
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{
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private IntPtr hFile;
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private GenericRights readOrWrite;
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public FtpStream(IntPtr hFile, GenericRights readOrWrite)
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{
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this.hFile = hFile;
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this.readOrWrite = readOrWrite;
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}
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public override void Close()
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{
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if (this.hFile != IntPtr.Zero)
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{
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BP.NativeMethods.InternetCloseHandle(this.hFile);
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this.hFile = IntPtr.Zero;
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}
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base.Close();
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GC.SuppressFinalize(this);
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}
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FtpStream()
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{
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this.Close();
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}
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public override void Flush()
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{
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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int num;
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if (!this.CanRead)
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{
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throw new NotSupportedException();
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}
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GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
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IntPtr ptr = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset);
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bool rc = NativeMethods.InternetReadFile(this.hFile, ptr, count, out num);
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handle.Free();
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FtpException.THROWONFALSE(rc);
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return num;
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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throw new NotSupportedException();
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}
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public override void SetLength(long value)
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{
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throw new NotSupportedException();
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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if (!this.CanWrite)
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{
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throw new NotSupportedException();
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}
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GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
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IntPtr ptr = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset);
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int a;
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bool rc = NativeMethods.InternetWriteFile(this.hFile, ptr, count, out a);
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handle.Free();
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FtpException.THROWONFALSE(rc);
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}
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public override bool CanRead =>
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(this.readOrWrite == GenericRights.Read);
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public override bool CanSeek =>
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false;
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public override bool CanWrite =>
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(this.readOrWrite == GenericRights.Write);
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public override long Length
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{
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get
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{
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throw new NotSupportedException();
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}
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}
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public override long Position
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{
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get
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{
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throw new NotSupportedException();
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}
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set
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{
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throw new NotSupportedException();
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}
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}
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}
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}
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