public void MReadWriteFile()
{
MemoryFileSystem mfs = new MemoryFileSystem();
Dir422 dir1 = mfs.GetRoot().CreateDir("Dir1");
File422 file1 = dir1.CreateFile("File1");
string datastring = "new data";
byte[] info = new UTF8Encoding(true).GetBytes(datastring);
//Assert.NotNull(file1._stream);
Stream open = file1.OpenReadWrite();
Assert.True(true);
Assert.NotNull(open);
open.Write(info, 0, info.Length);
open.Close();
Stream read = file1.OpenReadWrite();
byte[] readIn = new byte[256];
read.Read(readIn, 0, 256);
string str = System.Text.Encoding.Default.GetString(readIn).TrimEnd('\0');
StringAssert.AreEqualIgnoringCase(str, datastring);
}
public override File422 CreateFile(string fileName)
{
File422 memFile = null;
if (!StdFSHelper.ContainsPathCharacters(fileName) ||
string.IsNullOrEmpty(fileName))
{
//check if exists already
if ((memFile = GetFile(fileName)) != null)
{
using (Stream s = memFile.OpenReadWrite())
{
if (s != null)
{
//this 0's out the memory stream.
s.SetLength(0);
}
}
}
else
{
memFile = new MemFSFile(fileName, this);
_childFiles.Add(memFile);
}
}
return(memFile);
}
public void HandlePut(WebRequest req, Dir422 dir)
{
File422 file = dir.CreateFile(req.URI.Split('/', '\\').Last());
Stream outputStream = file.OpenReadWrite();
Stream inputStream = req._networkStream;
inputStream.ReadTimeout = 1000;
int BUFFER_SIZE = 8000;
int bytesRead = 0;
byte[] bytes = new byte[BUFFER_SIZE];
try
{
bytesRead = inputStream.Read(bytes, 0, bytes.Length);
}
catch { }
while (bytesRead != 0)
{
// Translate data bytes to a ASCII string.
outputStream.Write(bytes, 0, bytesRead);
bytes = new byte[BUFFER_SIZE];
try { bytesRead = inputStream.Read(bytes, 0, bytes.Length); }
catch { break; }
Console.WriteLine(bytesRead.ToString());
}
req.WriteHTMLResponse("Hello");
outputStream.Close();
inputStream.Close();
}
public void StdFSFileReadWriteSharedAccessTest()
{
File422 file = root.CreateFile("file.txt");
Stream stream3 = file.OpenReadWrite();
Stream stream1 = file.OpenReadOnly();
Stream stream2 = file.OpenReadOnly();
Assert.NotNull(stream3);
Assert.Null(stream1);
Assert.Null(stream2);
}
public void g_GetFileWrite()
{
//Dir422 dir = new StdFSDir(rootDir, true);
//File422 fooFile = dir.GetFile("fooFile");
//Stream fs = fooFile.OpenReadWrite();
//string s = "Hello World";
//fs.Write(Encoding.ASCII.GetBytes(s), 0, s.Length);
File422 fooFile = root.GetFile("fooFile");
Stream fs = fooFile.OpenReadWrite();
string s = "Hello World";
fs.Write(Encoding.ASCII.GetBytes(s), 0, s.Length);
}
public void f_ReadFileManyWriteOpen()
{
File422 testFile = root.GetFile("testFile");
Stream fs = testFile.OpenReadWrite();
string text = "This is a test for MemFileSystem.";
fs.Write(Encoding.ASCII.GetBytes(text), 0, text.Length);
Stream fs1 = testFile.OpenReadOnly();
Stream fs2 = testFile.OpenReadOnly();
Assert.AreEqual(null, fs1);
Assert.AreEqual(null, fs2);
fs.Dispose();
Stream fs3 = testFile.OpenReadOnly();
byte[] buf = new byte[Encoding.ASCII.GetBytes(text).Length];
fs3.Read(buf, 0, Encoding.ASCII.GetBytes(text).Length);
Stream fs4 = testFile.OpenReadOnly();
fs3.Close(); fs4.Close();
Assert.AreEqual(Encoding.ASCII.GetBytes(text), buf);
fs = testFile.OpenReadWrite();
string blah = "This is added Text.";
fs.Seek(Encoding.ASCII.GetBytes(text).Length, SeekOrigin.Begin);
fs.Write(Encoding.ASCII.GetBytes(blah), 0, blah.Length);
fs.Dispose();
fs3 = testFile.OpenReadOnly();
buf = new byte[Encoding.ASCII.GetBytes(text + blah).Length];
fs3.Read(buf, 0, Encoding.ASCII.GetBytes(text + blah).Length);
//string s = Encoding.ASCII.GetString(buf);
Assert.AreEqual(Encoding.ASCII.GetBytes(text + blah), buf);
}
/*
* Don’t allow overwriting existing files
* Allow all (non-existing-file-overwriting) uploads provided the file name doesn’t contain reserve characters (/ and \)
* Files can be uploaded to any directory that the service shares
* Files must be uploaded into the current directory that the user is seeing the listing for within the browser
* There is no limit on file sizes or content
* You only need to support uploading 1 file at a time (1 per page refresh, as described below)
* You do NOT need to support cross-origin requests or the OPTIONS method, which will have been discussed in class
*
*/
void handlePUT(WebRequest req)
{
string[] path = req.URI.Split('/');
// The file already exists
if (fileSystem.GetRoot().ContainsFile(path[path.Length - 1], true))
{
req.WriteNotFoundResponse("File exists");
}
// Make file
else
{
Dir422 currentDir = fileSystem.GetRoot();
// Don't include last element because thats the file name
for (int i = 2; i < path.Length - 1; i++)
{
// Fix '/' at end of URI
if (path[i] != "")
{
currentDir = currentDir.GetDir(path[i]);
}
}
File422 file = currentDir.CreateFile(path[path.Length - 1]);
using (Stream stream = file.OpenReadWrite())
{
byte[] buffer = new byte[1024 * 8];
int bytesRead = 0, size = int.Parse(req.Headers["content-length"]), totalRead = 0;
while (totalRead < size)
{
bytesRead = req.Body.Read(buffer, 0, (size - totalRead > buffer.Length) ? buffer.Length : size - totalRead);
totalRead += bytesRead;
Console.WriteLine(totalRead < size);
stream.Write(buffer, 0, (bytesRead < size) ? bytesRead : size);
}
}
Console.WriteLine("File uploaded");
req.WriteHTMLResponse("file uploaded!");
}
}
public void MemFSFileReadWriteSharedAccessTest()
{
File422 file = root.CreateFile("file.txt");
Stream stream3 = file.OpenReadWrite();
Stream stream1 = file.OpenReadOnly();
Stream stream2 = file.OpenReadOnly();
Assert.NotNull(stream3);
Assert.Null(stream1);
Assert.Null(stream2);
Assert.AreEqual(1, ((MemFSFile)file).RefCount);
stream3.Dispose();
Assert.AreEqual(0, ((MemFSFile)file).RefCount);
}
private void PUTHandler(WebRequest req, string name, Dir422 dir)
{
if (dir.ContainsFile(name, false) || name.Contains("\\") || name.Contains("/"))
{
string bodyMessage = "Invalid: File already exists or filename is invalid";
string template = "HTTP/1.1 400 Bad Request\r\n" +
"Content-Type: text/html\r\n" +
"Content-Length: {0}\r\n\r\n" +
"{1}";
string response = string.Format(template, Encoding.ASCII.GetBytes(bodyMessage).Length, bodyMessage);
byte[] responseBytes = Encoding.ASCII.GetBytes(response);
req.WriteResponse(responseBytes, 0, responseBytes.Length);
return;
}
File422 file = dir.CreateFile(name);
FileStream fs = (FileStream)file.OpenReadWrite();
long fileSize = 0;
Int64.TryParse(req.BodySize, out fileSize);
int totalread = 0;
while (true)
{
byte[] buf = new byte[4096];
int read = req.Body.Read(buf, 0, buf.Length);
fs.Write(buf, 0, read);
totalread += read;
if ((read == 0) || read < buf.Length && totalread >= fileSize)
{
break;
}
}
fs.Dispose(); fs.Close();
req.WriteHTMLResponse("Successfully uploaded file: " + name);
}
public void RunTest(FileSys422 mySys)
{
Dir422 root = mySys.GetRoot();
//We should not be able to go above our root.
Assert.IsNull(root.Parent);
// Checking that we do not have a file
Assert.IsFalse(root.ContainsFile("NewFile.txt", false));
//create the file
root.CreateFile("NewFile.txt");
// Check that we can find it.
Assert.IsTrue(root.ContainsFile("NewFile.txt", false));
// Same with directory
Assert.IsFalse(root.ContainsDir("SubDir", false));
Dir422 subDir = root.CreateDir("SubDir");
Assert.IsTrue(root.ContainsDir("SubDir", false));
//Creating a file in a sub dir
subDir.CreateFile("subText.txt");
// Testing the recursive methods on files
Assert.IsFalse(root.ContainsFile("subText.txt", false));
Assert.IsTrue(root.ContainsFile("subText.txt", true));
//Testing recurcive method on dirs
subDir.CreateDir("newSubDir");
Assert.IsFalse(root.ContainsDir("newSubDir", false));
Assert.IsTrue(root.ContainsDir("newSubDir", true));
//Checking getDir
Dir422 recivedDir = root.GetDir("InvalidDir");
Assert.IsNull(recivedDir);
recivedDir = root.GetDir("SubDir");
Assert.AreEqual("SubDir", recivedDir.Name);
// Checking that if a file does not exist we return null,
// otherwise we recived the file we wanted.
File422 recidedFile = root.GetFile("InvalidFile");
Assert.IsNull(recidedFile);
recidedFile = root.GetFile("NewFile.txt");
Assert.AreEqual("NewFile.txt", recidedFile.Name);
//Checking the name validation function.
// All of these methods use the same Validate Name method.
Assert.IsNull(subDir.CreateFile("file/New.txt"));
Assert.IsNull(subDir.CreateDir("file/New"));
string bufString = "hello world";
byte[] buff = ASCIIEncoding.ASCII.GetBytes(bufString);
var writeStream = recidedFile.OpenReadWrite();
writeStream.Write(buff, 0, 11);
var readStream = recidedFile.OpenReadOnly();
Assert.IsNull(readStream);
writeStream.Dispose();
readStream = recidedFile.OpenReadOnly();
Assert.IsNotNull(readStream);
//First read 'hello ' from each stream
byte[] readBuf = new byte[6];
readStream.Read(readBuf, 0, 6);
Assert.AreEqual("hello ", ASCIIEncoding.ASCII.GetString(readBuf));
//Having two streams open for read
var readStream2 = recidedFile.OpenReadOnly();
Assert.IsNotNull(readStream2);
byte[] readBuf2 = new byte[6];
readStream2.Read(readBuf2, 0, 6);
Assert.AreEqual("hello ", ASCIIEncoding.ASCII.GetString(readBuf2));
//Next read 'world' from each stream
readBuf = new byte[5];
readStream.Read(readBuf, 0, 5);
Assert.AreEqual("world", ASCIIEncoding.ASCII.GetString(readBuf));
readBuf2 = new byte[5];
readStream2.Read(readBuf2, 0, 5);
Assert.AreEqual("world", ASCIIEncoding.ASCII.GetString(readBuf2));
//try to open a stream to write while there are streams open for read
writeStream = recidedFile.OpenReadWrite();
Assert.IsNull(writeStream);
//Close streams and try again
readStream.Close();
readStream2.Close();
writeStream = recidedFile.OpenReadWrite();
Assert.IsNotNull(writeStream);
}
private void UploadFile(WebRequest req)
{
string[] pieces = req.URI.Substring(ServiceURI.Length).Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
if (pieces == null || pieces.Length == 0)
{
req.WriteNotFoundResponse("404: Path error.");
return;
}
Dir422 dir = r_fs.GetRoot();
for (int i = 0; i < pieces.Length - 1; i++)
{
string piece = pieces[i];
dir = dir.GetDir(piece);
if (dir == null)
{
req.WriteNotFoundResponse("404: Path error.");
return;
}
}
File422 file = dir.GetFile(PercentDecoding(pieces[pieces.Length - 1]));
if (file != null)
{
req.WriteHTMLResponse("<html> File Already Exists! </html>");
return;
}
File422 newFile = dir.CreateFile(PercentDecoding(pieces[pieces.Length - 1]));
FileStream str = (newFile.OpenReadWrite() as FileStream);
Stream reqStr = req.Body;
byte[] buf = new byte[4096];
long len = req.Len;
if (len < 4096)
{
reqStr.Read(buf, 0, (int)len);
str.Write(buf, 0, (int)len);
str.Close();
return;
}
int count = reqStr.Read(buf, 0, 4096);
int totalRead = count;
while (count != 0 && totalRead < len)
{
str.Write(buf, 0, count);
buf = new byte[4096];
count = reqStr.Read(buf, 0, 4096);
totalRead += count;
}
// If bytes were read last time, trim zeroes and write last bit
if (count != 0)
{
str.Write(buf, 0, count);
}
str.Close();
req.WriteHTMLResponse("<html> Upload Successful! </html>");
return;
}
private void DoUpload(WebRequest req, string percenDecoded)
{
string fileName = "";
Dir422 currentDir = null;
if (percenDecoded == ServiceURI)
{
currentDir = r_sys.GetRoot();
}
else
{
// The pluse one is the '/' after the '/files' so we remove '/files/'
string[] pathPeices = percenDecoded.Substring(ServiceURI.Length + 1).Split('/');
currentDir = r_sys.GetRoot();
for (int i = 0; i < pathPeices.Length - 1; i++)
{
currentDir = currentDir.GetDir(pathPeices[i]);
if (currentDir == null)
{
req.WriteNotFoundResponse(string.Empty);
return;
}
}
fileName = pathPeices [pathPeices.Length - 1];
}
File422 newFile = currentDir.CreateFile(fileName);
if (newFile == null)
{
// We could not create a new file
return;
}
Stream s = newFile.OpenReadWrite();
if (s == null)
{
return;
}
byte[] bodyBytes = new byte[1024];
long bytesRead = 0;
//Read all that we can.
while (bytesRead < req.BodyLength)
{
// We need to read chuncks at a time since read wants an int
// as the count, and we may loose data if we cast a long to an int.
int read = req.Body.Read(bodyBytes, 0, 1024);
bytesRead += read;
if (read == 0)
{
break;
}
s.Write(bodyBytes, 0, read);
Array.Clear(bodyBytes, 0, bodyBytes.Length);
}
s.Close();
req.WriteHTMLResponse("");
return;
}
