Beispiel #1
0
        public void Find()
        {
            List <searchFiles> sFiles = new List <searchFiles>();

            foreach (var f in fileMissingGroupsSHA1Sorted)
            {
                if (f.Files.Count == 0)
                {
                    continue;
                }

                string filename = "ToSort\\" + BitConverter.ToString(f.SHA1).Replace("-", "") + ".zip";
                Debug.WriteLine(filename);

                if (File.Exists(filename))
                {
                    continue;
                }
                if ((f.Size ?? 0) == 0)// || f.Size > 1024 * 1024 * 128)
                {
                    continue;
                }


                searchFiles sFile = new searchFiles()
                {
                    name = f.Files[0].DatTreeFullName,
                    Size = (ulong)f.Size,
                    CRC  = f.CRC,
                    SHA1 = f.SHA1,
                    MD5  = f.MD5
                };
                sFiles.Add(sFile);
            }
            foreach (var f in sFiles)
            {
                FindSHA1(f);
                if (f.found)
                {
                    fetch(f);
                }
                if (_thWrk.CancellationPending)
                {
                    return;
                }
            }
        }
Beispiel #2
0
        public void fetch(searchFiles f)
        {
            FileShareUiComm fs = new FileShareUiComm
            {
                username       = name,
                session        = session,
                filename       = f.name,
                size           = f.Size,
                crc            = f.CRC,
                sha1           = f.SHA1,
                md5            = f.MD5,
                compressedSize = f.compressedSize,
                offset         = 0,
                blockLength    = 0
            };

            fs.command = 3;

            comBits cb = 0;

            if (f.CRC != null)
            {
                cb |= comBits.cCRC;
            }
            if (f.SHA1 != null)
            {
                cb |= comBits.cSHA1;
            }
            if (f.MD5 != null)
            {
                cb |= comBits.cMD5;
            }


            ulong fileSize = f.compressedSize;

            // now try and get the file
            string filenameTmp  = "ToSort\\__FCDownload.tmp";
            string filename     = "ToSort\\" + BitConverter.ToString(f.SHA1).Replace("-", "") + ".zip";
            string filenameBin  = BitConverter.ToString(f.SHA1).Replace("-", "") + ".bin";
            uint   blockMaxSize = 4096 * 4096;

            Zip zFile = new Zip();

            zFile.ZipFileCreate(filenameTmp);
            zFile.ZipFileOpenWriteStream(true, false, filenameBin, f.Size, 8, out Stream stream);

            List <byte> list = new List <byte>();

            byte[] bReply = null;

            ulong offset = 0;

            while (fileSize > 0)
            {
                uint partNow = fileSize > blockMaxSize ? blockMaxSize : (uint)fileSize;
                Debug.WriteLine($"Index {offset} : Block {partNow} : Total {f.compressedSize} / {f.Size}");

                fs.command     = 3;
                fs.offset      = offset;
                fs.blockLength = (ulong)partNow;

                int  FetchCount = 0;
                bool res        = false;
                while (!res && FetchCount < 4)
                {
                    list.Clear();
                    list.Add(0); list.Add(3);
                    list.AddRange(name);
                    list.AddRange(session);
                    list.AddRange(BitConverter.GetBytes(f.Size));
                    list.Add((byte)cb);
                    if (f.CRC != null)
                    {
                        list.AddRange(f.CRC);
                    }
                    if (f.SHA1 != null)
                    {
                        list.AddRange(f.SHA1);
                    }
                    if (f.MD5 != null)
                    {
                        list.AddRange(f.MD5);
                    }
                    list.AddRange(BitConverter.GetBytes(offset));
                    list.AddRange(BitConverter.GetBytes(partNow));

                    fs.message = "Receiving";
                    _thWrk?.Report(fs);

                    res = NetClient.SendToServer(list.ToArray(), ip, port, out bReply);
                    FetchCount++;
                }
                if (FetchCount >= 4)
                {
                    fs.message = "Server Lost";
                    _thWrk?.Report(fs);
                    zFile.ZipFileCloseFailed();
                    zFile.ZipFileClose();
                    File.Delete(filenameTmp);
                    return;
                }

                if (bReply[0] != 0 || bReply[1] != 3)
                {
                    fs.message = "Error Back command";
                    _thWrk?.Report(fs);
                    zFile.ZipFileCloseFailed();
                    zFile.ZipFileClose();
                    File.Delete(filenameTmp);
                    return;
                }
                if (bReply[2] != 1)
                {
                    fs.message = "Find now not found";
                    _thWrk?.Report(fs);
                    zFile.ZipFileCloseFailed();
                    zFile.ZipFileClose();
                    File.Delete(filenameTmp);
                    return;
                }
                int partSize = BitConverter.ToInt32(bReply, 3);
                if (partSize != partNow)
                {
                    fs.message = "Receive Size Error";

                    _thWrk?.Report(fs);
                    zFile.ZipFileCloseFailed();
                    zFile.ZipFileClose();
                    File.Delete(filenameTmp);
                    return;
                }

                stream.Write(bReply, 7, partSize);

                offset   += partNow;
                fileSize -= partNow;
            }
            zFile.ZipFileCloseWriteStream(f.CRC);
            zFile.ZipFileClose();
            File.Move(filenameTmp, filename);
        }
Beispiel #3
0
        public bool FindSHA1(searchFiles f)
        {
            f.found = false;

            FileShareUiComm fs = new FileShareUiComm
            {
                username    = name,
                session     = session,
                filename    = f.name,
                size        = f.Size,
                crc         = f.CRC,
                sha1        = f.SHA1,
                md5         = f.MD5,
                offset      = 0,
                blockLength = 0
            };

            fs.command = 2;

            comBits cb = 0;

            if (f.CRC != null)
            {
                cb |= comBits.cCRC;
            }
            if (f.SHA1 != null)
            {
                cb |= comBits.cSHA1;
            }
            if (f.MD5 != null)
            {
                cb |= comBits.cMD5;
            }


            List <byte> list = new List <byte>();

            list.Add(0); list.Add(2);
            list.AddRange(name);
            list.AddRange(session);
            list.AddRange(BitConverter.GetBytes(f.Size));
            list.Add((byte)cb);
            if (f.CRC != null)
            {
                list.AddRange(f.CRC);
            }
            if (f.SHA1 != null)
            {
                list.AddRange(f.SHA1);
            }
            if (f.MD5 != null)
            {
                list.AddRange(f.MD5);
            }



            NetClient.SendToServer(list.ToArray(), ip, port, out byte[] bReply);

            if (bReply == null)
            {
                fs.message = "Server Lost";
                _thWrk?.Report(fs);
                return(false);
            }

            if (bReply[0] != 0 || bReply[1] != 2)
            {
                //                textBox2.Text = "Incorrect Command reply";
                return(false);
            }

            if (bReply[2] != 1)
            {
                fs.message = "Not Found";
                _thWrk?.Report(fs);
                return(false);
            }

            f.compressedSize = BitConverter.ToUInt64(bReply, 3);
            byte[] fCRC = bReply.Copy(11, 4);

            if (!ArrByte.ECompare(f.CRC, fCRC))
            {
                return(false);
            }

            if (f.CRC == null)
            {
                f.CRC = fCRC;
            }

            f.found = true;
            return(true);
        }