public void Download()
{
DataTable fileInfo;
string directoryID = db.ExecuteScalar("SELECT id FROM directories WHERE fullpath = @path",
new Dictionary <string, object>()
{
{ "@path", vsrc.ParentPath.Path }
});
fileInfo =
db.GetDataTable("SELECT * from entities where isdir = @isdir and fname = @name and dir = @dir", new Dictionary <string, object>()
{
{ "@name", vsrc.EntityName },
{ "@isdir", 0 },
{ "@dir", directoryID }
});
// While we write the blocks to multiple -
// We only need data from one file system -
// I want to test the file system to make sure it is working before attempting access
int fsToUse = 0;
bool continueSearch = false;
for (int i = 0; i < fsdst.Count; i++)
{
try
{
using (Stream s = fsdst[fsToUse].CreateFile(FileSystemPath.Parse("/test")))
{
}
continueSearch = false;
}
catch (Exception)
{
Console.WriteLine("[Error]: file system - " + fsdst[fsToUse].ToString() + " missing - trying a backup");
continueSearch = true;
fsToUse++;
}
if (!continueSearch)
{
break;
}
}
DataTable blocks = db.GetDataTable(@"SELECT * FROM fileblocks
inner join blocks on blocks.id = fileblocks.block_id
WHERE file_id = @fileid
and blocks.location = @location
order by block_order asc"
, new Dictionary <string, object>()
{
{ "@fileid", fileInfo.Rows[0]["id"] },
{ "@location", fsdst[fsToUse].ToString() }
});
using (ProgressBar pb = new ProgressBar(disableProgress))
{
Int64 rowCount = 0;
foreach (DataRow r in blocks.Rows)
{
pb.Report((((double)rowCount) / blocks.Rows.Count));
rowCount += 1;
/*string remotename = db.ExecuteScalar("SELECT name FROM blocks where id = @blockID and location = @name",
* new Dictionary<string, object>()
* {
* {"@blockID", r["block_id"]},
* {"@name", fsdst[fsToUse].ToString()}
* });*/
string remotename = r["name"].ToString();
remotename = "/" + remotename;
remotename = remotename.Replace("//", "/");
using (var fstream = fsdst[fsToUse].OpenFile(FileSystemPath.Parse($"/{DATAFILE}"), FileAccess.Read))
{
DeDupeStorage storage = new DeDupeStorage(fstream, db);
byte[] buffer = storage.GetFile(remotename);
byte[] plainText = AESWrapper.DecryptToByte(buffer, key);
using (FileStream f = System.IO.File.Open(this.Path, FileMode.Append, FileAccess.Write))
{
f.Write(plainText);
}
}
/*using (var fstream = fsdst[fsToUse].OpenFile(FileSystemPath.Parse($"/{DATAFILE}"), FileAccess.Read))
* {
* DeDupeStorage storage = new DeDupeStorage(fstream, db);
* byte[] buffer = storage.GetFile(remotename);
* byte[] plainText = AESWrapper.DecryptToByte(buffer, key);
* using (var zippedStream = new MemoryStream(plainText))
* {
* using (var archive = new ZipArchive(zippedStream, ZipArchiveMode.Read))
* {
* var ent = archive.GetEntry("data.bin");
* using (var zipent = ent.Open())
* {
* byte[] bufferinner = zipent.ReadAllBytes();
* using (FileStream f = System.IO.File.Open(this.Path, FileMode.Append, FileAccess.Write))
* {
* f.Write(bufferinner);
* }
* //fstream.Write(bufferinner);
* }
* }
* }
* }*/
/*using (var fstream = fsdst[fsToUse].OpenFile(FileSystemPath.Parse($"/{DATAFILE}"), FileAccess.Read))
* {
* using (var zipfile = new ZipArchive(fstream, ZipArchiveMode.Read))
* {
* var ent = zipfile.GetEntry(remotename);
* using (var zipent = ent.Open())
* {
* byte[] buffer = zipent.ReadAllBytes();
* byte[] plainText = AESWrapper.DecryptToByte(buffer, key);
*
* if (plainText == null)
* {
* throw new Exception("[Error]: Could not decrypt file");
* }
*
* using (FileStream f = System.IO.File.Open(this.Path, FileMode.Append, FileAccess.Write))
* {
* f.Write(plainText);
* }
* }
* }
* }*/
/*using (Stream s = fsdst[fsToUse].OpenFile(FileSystemPath.Parse(remotename), FileAccess.Read))
* {
*
* using (FileStream f = System.IO.File.Open(this.Path, FileMode.Append, FileAccess.Write))
* {
* byte[] buffer = s.ReadAllBytes();
* byte[] plainText = AESWrapper.DecryptToByte(buffer, key);
* if (plainText == null)
* {
* throw new Exception("[Error]: Could not decrypt file");
* }
*
* f.Write(plainText);
* }
* }*/
}
string fileHash = fileInfo.Rows[0]["filehash"].ToString();
if (fileHash != "")
{
string newHash = "";
using (FileStream fs = System.IO.File.Open(this.Path, FileMode.Open, FileAccess.Read))
{
newHash = fs.GetSHA512();
}
if (fileHash != newHash)
{
Console.WriteLine("[Warning]: File hashs do not match - data corruption possible!");
}
}
}
}
public void Flush()
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
int blockCount = 0;
string fileId = "";
string directoryID = db.ExecuteScalar("SELECT id FROM directories WHERE fullpath = @path",
new Dictionary <string, object>()
{
{ "@path", vsrc.ParentPath.Path }
});
DataTable fileInfo =
db.GetDataTable("SELECT * from entities where isdir = @isdir and fname = @name and dir = @dir", new Dictionary <string, object>()
{
{ "@name", vsrc.EntityName },
{ "@isdir", 0 },
{ "@dir", directoryID }
});
// If file does not exist - create file record
if (fileInfo.Rows.Count == 0)
{
string insertEntityQuery = "INSERT INTO entities (fname, dir, size, cdate, mdate, isdir, accessdate, filehash) VALUES (@fname, @dir, @size, @cdate, @mdate, @isdir, @access, @filehash)";
double ctime = DateTime.Now.UnixTimeStamp();
string fileHash = "";
using (FileStream fs = new FileStream(this.Path, FileMode.Open, FileAccess.Read))
{
fileHash = fs.GetSHA512();
}
db.ExecuteNonQuery(insertEntityQuery, new Dictionary <string, object>()
{
{ "@fname", vsrc.EntityName },
{ "@dir", directoryID },
{ "@size", new FileInfo(Path).Length },
{ "@cdate", ctime },
{ "@mdate", ctime },
{ "@access", ctime },
{ "@isdir", 0 },
{ "@filehash", fileHash }
});
fileInfo =
db.GetDataTable("SELECT * from entities where isdir = @isdir and fname = @name and dir = @dir", new Dictionary <string, object>()
{
{ "@name", vsrc.EntityName },
{ "@isdir", 0 },
{ "@dir", directoryID }
});
}
fileId = fileInfo.Rows[0]["id"].ToString();
using (FileStream f = System.IO.File.Open(this.Path, FileMode.Open, FileAccess.Read))
{
Int64 lenthOfFile = f.Length;
Int64 totalRead = 0;
using (ProgressBar pb = new ProgressBar(disableProgress))
{
while ((bytesRead = f.Read(buffer, 0, buffer.Length)) > 0)
{
pb.Report((((double)totalRead) / lenthOfFile));
totalRead = totalRead + bytesRead;
string hash1 = buffer.JenkinsOneAtATime();
string id = "";
string hash2 = "";
string hash2Check = "";
hash2 = buffer.GetSHA512(0, bytesRead);
hash2Check = db.ExecuteScalar("SELECT id FROM blocks WHERE hash2 = @hash2 and hash1 = @hash1",
new Dictionary <string, object>()
{
{ "@hash2", hash2 },
{ "@hash1", hash1 }
});
id = hash2Check;
if (id == "")
{
// need to create block
Guid g = Guid.NewGuid();
string name = g.ToString();
string encName = AESWrapper.EncryptToString(name, key);
encName = encName.Replace("/", "_");
encName = "/" + encName;
encName = encName.Replace("//", "__");
/*byte[] compressed;
* using (System.IO.MemoryStream instream = new MemoryStream(buffer))
* {
* using (System.IO.MemoryStream outstream = new MemoryStream())
* {
* using (GZipStream s = new GZipStream(outstream, CompressionMode.Compress))
* {
* instream.CopyTo(s);
* }
*
* compressed = outstream.ToArray();
* }
* }*/
foreach (IFileSystem fs in fsdst)
{
/*try
* {
* using (Stream s = fs.CreateFile(FileSystemPath.Parse("/test")))
* {
*
* }
* }
* catch (Exception e)
* {
* Console.WriteLine("[Error]: file system - " + fs.ToString() + " is unreachable.");
* continue;
* }*/
//fs.
using (var fstream = fs.OpenOrCreate(FileSystemPath.Parse($"/{DATAFILE}"),
FileAccess.ReadWrite))
{
//byte[] cipher = AESWrapper.EncryptToByte(buffer, key, 0, bytesRead);
DeDupeStorage storage = new DeDupeStorage(fstream, db);
byte[] cipher = AESWrapper.EncryptToByte(buffer, key, 0, bytesRead);
storage.AddFile(encName, cipher);
}
/*using (var fstream = fs.OpenOrCreate(FileSystemPath.Parse($"/{DATAFILE}"),
* FileAccess.ReadWrite))
* {
* //byte[] cipher = AESWrapper.EncryptToByte(buffer, key, 0, bytesRead);
* DeDupeStorage storage = new DeDupeStorage(fstream, db);
* using (var zippedStream = new MemoryStream())
* {
* using (var archive = new ZipArchive(zippedStream, ZipArchiveMode.Update))
* {
* var ent = archive.CreateEntry("data.bin", CompressionLevel.Optimal);
* using (var zipent = ent.Open())
* {
* zipent.Write(buffer, 0, bytesRead);
* }
* }
*
* byte[] zipData = zippedStream.ToArray();
* byte[] cipher = AESWrapper.EncryptToByte(zipData, key, 0, zipData.Length);
* storage.AddFile(encName, cipher);
*
* }
* }*/
/*using (var fstream = fs.OpenOrCreate(FileSystemPath.Parse($"/{DATAFILE}"), FileAccess.ReadWrite))
* {
* using (var zip = new ZipArchive(fstream, ZipArchiveMode.Update))
* {
* var ent = zip.CreateEntry(encName, CompressionLevel.Optimal);
* using (var entfs = ent.Open())
* {
* byte[] cipher = AESWrapper.EncryptToByte(buffer, key, 0, bytesRead);
* entfs.Write(cipher);
* }
* }
* }*/
/*using (Stream s = fs.CreateFile(FileSystemPath.Parse($"{encName}")))
* {
* byte[] cipher = AESWrapper.EncryptToByte(buffer, key, 0, bytesRead);
* s.Write(cipher);
* }*/
string blockInsertSQL =
"INSERT INTO blocks (hash1, size, name, location, hash2) VALUES (@hash1, @size, @name, @location, @hash2)";
db.ExecuteNonQuery(blockInsertSQL, new Dictionary <string, object>()
{
{ "@hash1", hash1 },
{ "@size", bytesRead },
{ "@name", encName },
{ "@location", fs.ToString() },
{ "@hash2", hash2 }
});
hash2Check = db.ExecuteScalar(
"SELECT id FROM blocks WHERE hash2 = @hash2 and hash1 = @hash1 and location = @location",
new Dictionary <string, object>()
{
{ "@hash2", hash2 },
{ "@hash1", hash1 },
{ "@location", fs.ToString() }
});
id = hash2Check;
string fileBlockInsertSQL =
"INSERT INTO fileblocks (file_id, block_id, block_order) VALUES (@fileId, @blockId, @blockOrder)";
db.ExecuteNonQuery(fileBlockInsertSQL, new Dictionary <string, object>()
{
{ "@fileId", fileId },
{ "@blockId", id },
{ "@blockOrder", blockCount }
});
}
}
else
{
string fileBlockInsertSQL =
"INSERT INTO fileblocks (file_id, block_id, block_order) VALUES (@fileId, @blockId, @blockOrder)";
db.ExecuteNonQuery(fileBlockInsertSQL, new Dictionary <string, object>()
{
{ "@fileId", fileId },
{ "@blockId", id },
{ "@blockOrder", blockCount }
});
}
blockCount++;
}
}
}
}