public override void Handler(WebRequest req)
{
if (!req.URI.StartsWith(this.ServiceURI))
{
throw new InvalidOperationException();
}
// Percent-decode our filename
string percenDecoded = Uri.UnescapeDataString(req.URI);
//If we want the root folder
if (percenDecoded == ServiceURI)
{
RespondWithList(r_sys.GetRoot(), req);
return;
}
// The pluse one is the '/' after the '/files' so we remove '/files/'
string[] peices = percenDecoded.Substring(ServiceURI.Length + 1).Split('/');
Dir422 dir = r_sys.GetRoot();
for (int i = 0; i < peices.Length - 1; i++)
{
dir = dir.GetDir(peices[i]);
if (dir == null)
{
//This wants a response?
req.WriteNotFoundResponse(string.Empty);
return;
}
}
string lastPeice = peices [peices.Length - 1];
File422 file = dir.GetFile(lastPeice);
if (file != null)
{
//Send back the file to them.
RespondWithFile(file, req);
}
else
{
//Send the dir contents (if it is a dir to send back)
dir = dir.GetDir(lastPeice);
if (dir != null)
{
//Respond with the list of files and dirs
RespondWithList(dir, req);
}
else
{
req.WriteNotFoundResponse(string.Empty);
}
}
}
public void d_CreateContainFileRecursive()
{
Dir422 TestDir = root.GetDir("TestDir");
Dir422 BlahDir = TestDir.CreateDir("BlahDir");
BlahDir.CreateFile("blahFile");
Assert.AreEqual(true, root.ContainsFile("blahFile", true));
}
public void c_CreateContainsDirectoryRecursive()
{
//Dir422 dir = new StdFSDir(rootDir + "/FooDir");
//dir.CreateDir("BarDir");
//Dir422 dirParent = dir.Parent;
Dir422 FooDir = root.GetDir("FooDir");
FooDir.CreateDir("BarDir");
Assert.AreEqual(true, root.ContainsDir("BarDir", true));
}
public override void Handler(WebRequest req)
{
if (!req.RequestURI.StartsWith(ServiceURI, StringComparison.CurrentCulture))
{
throw new InvalidOperationException();
}
if (req.RequestURI == "/files" || req.RequestURI == "/files/")
{
RespondWithList(m_fs.GetRoot(), req);
return;
}
string[] pieces = req.RequestURI.Substring(ServiceURI.Length).Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
if (pieces == null || pieces.Length == 0)
{
req.WriteNotFoundResponse("404: Path error.");
return;
}
Dir422 dir = m_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;
}
}
string name = PercentDecoding(pieces[pieces.Length - 1]);
File422 file = dir.GetFile(name);
if (file != null)
{
RespondWithFile(file, req);
return;
}
dir = dir.GetDir(name);
if (dir == null)
{
req.WriteNotFoundResponse("404: Path error.");
return;
}
RespondWithList(dir, req);
}
// Methods
public override void Handler(WebRequest request)
{
Console.WriteLine("Service Handler: OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO");
_request = request;
// Parse the URI and determine which of the 3 is the case:
string[] parsedURI = request.URI.Split('/');
List <string> dirNames = new List <string>();
int count = 0;
foreach (string s in parsedURI)
{
if (count > 1)// so we only have traversable dirnames
{
Console.WriteLine("adding: " + parsedURI[count]);
dirNames.Add(parsedURI[count]);
}
Console.WriteLine("s: " + s);
Console.WriteLine("c: " + count);
count++;
}
Console.WriteLine("dirNames.Count: " + dirNames.Count);
Dir422 currentDir = _fs.GetRoot();
Dir422 lastDir;
File422 file = null;
foreach (string s in dirNames)
{
if (!String.IsNullOrEmpty(s))
{
Console.WriteLine("locating: " + s);
lastDir = currentDir;
currentDir = currentDir.GetDir(s);
if (null == currentDir) // check to see if a file
{
Console.WriteLine("Null Dir");
file = lastDir.GetFile(s);
if (null == file)
{
Console.WriteLine("Null File");
//requested Resource does not exist
// so 404 write to network and return
request.WriteNotFoundResponse("Could not find file: " + s + ".");
return;
}
// otherwise write file contents as html
WriteFileContents(file);
return;
}
}
}
// If this point is reached then we should have a dir and
// we must write its file listing to the network
WriteDirListing(currentDir);
// Provide support for partial content responses
// (i.e. support the Range header)
}
public void StdFSDirParentTest()
{
Dir422 two = root.GetDir("one");
Dir422 a = two.GetDir("a");
Assert.AreSame(two, a.Parent);
}
private void PutHandler(WebRequest req)
{
//NOTE use Uri.UnescapeDataString to convert the escaped string
//to it's unescaped representation.
//i.e if we get http://localhost:4220/%20test/
//would become http://localhost:4220/ test/
string[] names = Uri.UnescapeDataString(req.RequestTarget).Split(new char[] { '/' },
StringSplitOptions.RemoveEmptyEntries);
//first name is files.
string currString = "";
Dir422 currNode = _fs.GetRoot(); //root is what we chose, the client knows it as "files".
Dir422 nextNode = null;
for (int i = 1; i < names.Length; i++)
{
currString = names[i];
if (i == names.Length - 1) // the c in /a/b/c
//put the file.
{
byte[] buffer = new byte[1024];
Stream concatStream = req.Body;
int read = 0;
string path = _fs.GetRoot().Name + BuildPath(currNode) + "/" + names[i];
//Don't allow overwriting existing files or files with \ character
if (currNode.ContainsFile(names[i], false) || names[i].Contains("\\"))
{
return;
}
using (FileStream newFile = File.OpenWrite(path))
{
while ((read = concatStream.Read(buffer, 0, buffer.Length)) > 0)
{
newFile.Write(buffer, 0, read);
Array.Clear(buffer, 0, buffer.Length); //reset buffer for next read.
}
}
}
else if ((nextNode = currNode.GetDir(currString)) != null)
{
//go to next dir to repeat iteration.
currNode = nextNode;
}
else
{
return;
}
}
string htmlString = BuildDirHTML(currNode);
//req.WriteHTMLResponse(htmlString);
req.WriteRegularResponse(htmlString);
}
private void GetHandler(WebRequest req)
{
//NOTE use Uri.UnescapeDataString to convert the escaped string
//to it's unescaped representation.
//i.e if we get http://localhost:4220/%20test/
//would become http://localhost:4220/ test/
string[] names = Uri.UnescapeDataString(req.RequestTarget).Split(new char[] { '/' },
StringSplitOptions.RemoveEmptyEntries);
//first name is files.
string currString = "";
Dir422 currNode = _fs.GetRoot(); //root is what we chose, the client knows it as "files".
Dir422 nextNode = null;
File422 file = null;
int uriCase = 1;
for (int i = 1; i < names.Length; i++)
{
currString = names[i];
if ((nextNode = currNode.GetDir(currString)) != null)
{
//go to next dir to repeat iteration.
currNode = nextNode;
}
else if ((file = currNode.GetFile(currString)) != null)
{
uriCase = 2;
break;
}
else
{
uriCase = 3;
break;
}
}
switch (uriCase)
{
//URI maps to an existing directory in the file system.
case 1:
string htmlString = BuildDirHTML(currNode);
req.WriteHTMLResponse(htmlString);
break;
//The URI maps to an existing file in the file system
case 2:
SendFileContent(file, req);
break;
//The URI maps to something that doesn’t exist in the file system
case 3:
req.WriteNotFoundResponse(errorHtml);
break;
}
}
public override void Handler(WebRequest req)
{
if (!req.URI.StartsWith(ServiceURI, StringComparison.Ordinal))
{
throw new InvalidOperationException();
}
//split the path
string[] places = req.URI.Substring(ServiceURI.Length).Split('/');
Dir422 dir = r_sys.GetRoot();
for (int i = 0; i < places.Length - 1; i++)
{
dir = dir.GetDir(places[i]);
if (dir == null)
{
req.WriteNotFoundResponse("");
return;
}
}
File422 file = dir.GetFile(places[places.Length - 1]);
if (file != null)
{
RespondWithFile(file, req);
}
else
{
dir = dir.GetDir(places[places.Length - 1]);
if (dir != null)
{
RespondWithList(dir, req);
}
else
{
req.WriteNotFoundResponse("");
}
}
}
public static Dir422 TraverseToDir(Dir422 Root, string path)
{
Dir422 directory = Root;
string[] pathPieces = path.Split('/');
for (int i = 2; i < pathPieces.Count(); i++)
{
directory = directory.GetDir(pathPieces[i]);
}
return(directory);
}
public void f_GetDirMakeFile()
{
//Dir422 dir = new StdFSDir(rootDir + "/FooDir");
//Dir422 BarDir = dir.GetDir("BarDir");
//BarDir.CreateFile("barFile2");
//Assert.AreEqual(true, BarDir.ContainsFile("barFile2", true));
Dir422 FooDir = root.GetDir("FooDir");
Dir422 BarDir = FooDir.GetDir("BarDir");
BarDir.CreateFile("barFile2");
Assert.AreEqual(true, BarDir.ContainsFile("barFile2", true));
}
public void SSysContains()
{
StandardFileSystem sfs2 = StandardFileSystem.Create("/Users/drewm");
Dir422 dir1 = sfs2.GetRoot().GetDir("Desktop");
Dir422 dir2 = dir1.GetDir("Ableton");
Dir422 dir3 = dir2.GetDir("wav files");
File422 f = dir3.GetFile("Cloud.wav");
Assert.IsTrue(sfs2.Contains(f));
}
public void SFileTests()
{
StandardFileSystem sfs2 = StandardFileSystem.Create("/Users/drewm");
Dir422 dir1 = sfs2.GetRoot().GetDir("Desktop");
Dir422 dir2 = dir1.GetDir("Ableton");
Dir422 dir3 = dir2.GetDir("wav files");
File422 f = dir3.GetFile("Cloud.wav");
StringAssert.AreEqualIgnoringCase(f.Name, "Cloud.wav");
StringAssert.AreEqualIgnoringCase(f.Parent.Name, "wav files");
}
/*
* 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!");
}
}
private void GETHandler(WebRequest req, string name, Dir422 dir)
{
File422 file = dir.GetFile(name);
if (file != null)
{
RespondWithFile(file, req);
return;
}
dir = dir.GetDir(name);
if (dir == null)
{
req.WriteNotFoundResponse("404: Path error.");
return;
}
RespondWithList(dir, req);
}
public void SgetDir_File()
{
StandardFileSystem sfs2 = StandardFileSystem.Create("/Users/drewm");
Dir422 dir1 = sfs2.GetRoot().GetDir("Desktop");
Assert.NotNull(dir1);
Dir422 dir2 = dir1.GetDir("Ableton");
Assert.NotNull(dir2);
Dir422 dir3 = dir2.GetDir("wav files");
Assert.NotNull(dir3);
Assert.NotNull(dir3.GetFile("Cloud.wav"));
}
void handleGET(WebRequest req)
{
try
{
string[] path = req.URI.Split('/');
// To handle '/files' request
if (path.Length == 2)
{
req.WriteHTMLResponse(BuildDirHTML(fileSystem.GetRoot()));
return;
}
// This handles '/files/**'
// The URI maps to an existing directory in the file system
if (fileSystem.GetRoot().ContainsDir(path[path.Length - 1], true))
{
// Imidiately set the content-type to html since we are returning html code
req.Headers["content-type"] = "text/html";
Dir422 currentDir = fileSystem.GetRoot();
for (int i = 2; i < path.Length; i++)
{
// Fix '/' at end of URI
if (path[i] != "")
{
currentDir = currentDir.GetDir(path[i]);
}
}
req.WriteHTMLResponse(BuildDirHTML(currentDir));
}
// The URI maps to an existing file in the file system
else if (fileSystem.GetRoot().ContainsFile(path[path.Length - 1], true))
{
// Get the file type and set the content-type to the file type
string filename = path[path.Length - 1];
int dot = filename.LastIndexOf('.');
string type = (dot >= 0) ? filename.Substring(dot).ToLower() : "";
switch (type)
{
case ".txt":
req.Headers["content-type"] = "text/plain";
break;
case ".xml":
req.Headers["content-type"] = "text/xml";
break;
case ".jpg":
req.Headers["content-type"] = "image/jpg";
break;
case ".jpeg":
req.Headers["content-type"] = "image/jpeg";
break;
case ".png":
req.Headers["content-type"] = "image/png";
break;
case ".mp4":
req.Headers["content-type"] = "video/mp4";
break;
case ".pdf":
req.Headers["content-type"] = "application/pdf";
break;
default:
req.Headers["content-type"] = "text/html";
break;
}
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.GetFile(path[path.Length - 1]);
// Get the file stuff
int bytesRead;
// Did the client send us a range header
string rangeValue;
if (req.Headers.TryGetValue("range", out rangeValue))
{
byte[] buffer;
// Send the chunk they want. Only works for bytes=%d-%d
rangeValue = rangeValue.Replace(" ", "");
rangeValue = rangeValue.Remove(0, "bytes=".Length);
string[] bytes = rangeValue.Split('-');
int start = int.Parse(bytes[0]), end = int.Parse(bytes[1]), totalRead = 0;
buffer = new byte[end - start];
using (BufferedStream reader = new BufferedStream(file.OpenReadOnly()))
{
// Add header = content-range: bytes %d-%d/%d
req.Headers["content-range"] = "bytes " + rangeValue + "/" + reader.Length;
req.WritePreBody(206, buffer.Length);
while ((bytesRead = reader.Read(buffer, 0, buffer.Length)) > 0)
{
req.WriteFile(buffer, totalRead, bytesRead);
totalRead += bytesRead;
}
}
}
else
{
// Send the entire thing
BufferedStream reader = new BufferedStream(file.OpenReadOnly());
byte[] buffer = new byte[8 * 1024];
req.WritePreBody(200, reader.Length);
while ((bytesRead = reader.Read(buffer, 0, buffer.Length)) > 0)
{
req.WriteFile(buffer, 0, bytesRead);
}
reader.Close();
}
}
else
{
// The URI maps to something that doesn’t exist in the file system
req.WriteNotFoundResponse("<h1>404</h1><br><b>Content not found</b>");
}
}
catch (Exception)
{
return;
}
}
public override void Handler(WebRequest req)
{
//Every request should start with /files/
if (!req.URI.StartsWith(this.ServiceURI))
{
throw new InvalidOperationException();
}
//percent-decode URI
string uri = req.URI;
string[] pieces = req.URI.Substring(ServiceURI.Length).Split('/', '\\');
Dir422 dir = _fs.GetRoot();
//Grabs all the parts but the last part, which could be a file or a dir
string piece = "";
for (int i = 1; i < pieces.Length - 1; i++)
{
piece = pieces[i];
//if (piece.Contains("%20")) piece = piece.Replace("%20", " ");
dir = dir.GetDir(piece);
//Check if directory exists
if (dir == null)
{
req.WriteNotFoundResponse();
return;
}
}
//Check if the last part is a file or a directory
piece = pieces[pieces.Length - 1];
//if (piece.Contains("%20")) piece = piece.Replace("%20", " ");
File422 file = dir.GetFile(piece); //TODO: This is returning Null and is not supposed to.
if (file == null && req.Method == "PUT")
{
HandlePut(req, dir);
return;
}
if (file != null)
{
//If it's a file, then return the file.
Console.WriteLine("It's a file!");
RespondWithFile(file, req);
}
else
{
piece = pieces[pieces.Length - 1];
//if (piece.Contains("%20")) piece = piece.Replace("%20", " ");
if (piece != "")
{
dir = dir.GetDir(piece);
}
if (dir != null)
{
//If it's a dir, return the dir
RespondWithList(dir, req);
}
else
{
//Else return that nothing was found.
req.WriteNotFoundResponse();
}
}
}
public void StandardFileSystemContainsDirTest()
{
Dir422 c = root.GetDir("two").GetDir("a").GetDir("b").GetDir("c");
Assert.True(stdFS.Contains(c));
}
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;
}
public void MemoryFileSystemContainsDirTest()
{
Dir422 c = root.GetDir("two").GetDir("a").GetDir("b").GetDir("c");
Assert.True(memFS.Contains(c));
}
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;
}
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);
}
