public void WebTransferCache_DeleteFileWhenOpen()
{
// Verify that an open file will not be deleted and no exception
// is thrown. This simulates the case where the website is in the
// process of downloading the file.
WebTransferCache cache;
WebTransferFile file;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromSeconds(10));
cache.Start();
try
{
file = cache.GetCommittedFile(Guid.Empty, ".pdf");
cache.GetCommittedFile(file.ID, ".pdf"); // File should still be there
using (file.GetStream())
{
cache.DeleteFile(file.ID, ".pdf");
cache.GetCommittedFile(file.ID, ".pdf"); // Shouldn't throw an exception
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_UploadMissing()
{
// Verify that we can detect a missing upload file.
WebTransferCache cache;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(10));
cache.Start();
try
{
cache.GetUploadFile(Guid.NewGuid(), ".pdf");
}
catch (Exception e)
{
// We're expecting a FileNotFoundException.
Assert.IsInstanceOfType(e, typeof(FileNotFoundException));
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_Download()
{
// Test the file download scenario.
WebTransferCache cache;
WebTransferFile transferFile;
Guid id;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(10));
cache.Start();
try
{
// Create a file
transferFile = cache.GetCommittedFile(Guid.Empty, ".pdf");
id = transferFile.ID;
Assert.AreNotEqual(Guid.Empty, transferFile.ID);
Assert.IsFalse(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Write some data
using (var stream = transferFile.GetStream())
{
stream.WriteInt32(1001);
}
// Open an existing file
transferFile = cache.GetCommittedFile(id, ".pdf");
Assert.AreEqual(id, transferFile.ID);
Assert.IsFalse(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
using (var stream = transferFile.GetStream())
{
Assert.AreEqual(1001, stream.ReadInt32());
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_PurgeDownloadWhileOpen()
{
// Verify that open download files are not purged even though
// they exceed the age limit.
WebTransferCache cache;
WebTransferFile downloadFile;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromSeconds(10), TimeSpan.FromMinutes(10));
cache.SetSleepTime(TimeSpan.FromSeconds(0.5));
cache.Start();
try
{
downloadFile = cache.GetCommittedFile(Guid.Empty, ".pdf");
using (downloadFile.GetStream())
{
Thread.Sleep(5000);
cache.GetCommittedFile(downloadFile.ID, ".pdf"); // File should still be there
Thread.Sleep(1000);
cache.GetCommittedFile(downloadFile.ID, ".pdf"); // File should still be there
Thread.Sleep(7000);
cache.GetCommittedFile(downloadFile.ID, ".pdf"); // File should still be there
}
// The file is closed now. Wait a bit and verify that it gets purged.
Thread.Sleep(2000);
try
{
cache.GetCommittedFile(downloadFile.ID, ".pdf");
Assert.Fail("Expected the file to be purged.");
}
catch (FileNotFoundException)
{
// Expected
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_PurgeUpload()
{
// Verify that upload files are purged properly as they age.
WebTransferCache cache;
WebTransferFile downloadFile;
WebTransferFile uploadFile;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromSeconds(10));
cache.SetSleepTime(TimeSpan.FromSeconds(0.5));
cache.Start();
try
{
downloadFile = cache.GetCommittedFile(Guid.Empty, ".pdf");
uploadFile = cache.GetUploadFile(Guid.Empty, ".pdf");
Thread.Sleep(5000);
cache.GetUploadFile(uploadFile.ID, ".pdf"); // File should still be there
Thread.Sleep(1000);
cache.GetUploadFile(uploadFile.ID, ".pdf"); // File should still be there
Thread.Sleep(7000);
// File should have been purged
try
{
cache.GetUploadFile(uploadFile.ID, ".pdf");
Assert.Fail("Expected the file to be purged.");
}
catch (FileNotFoundException)
{
// Expected
}
cache.GetCommittedFile(downloadFile.ID, ".pdf"); // File should still be there
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_DeleteFileByUri()
{
// Verify that we can delete a cached file via its URI.
WebTransferCache cache;
WebTransferFile file;
Uri uri;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromSeconds(10));
cache.Start();
try
{
file = cache.GetCommittedFile(Guid.Empty, ".pdf");
uri = cache.GetCommittedFile(file.ID, ".pdf").Uri; // File should still be there
cache.DeleteFile(uri);
// File should have been deleted
try
{
cache.GetCommittedFile(file.ID, ".pdf");
Assert.Fail("Expected the file to be deleted.");
}
catch (FileNotFoundException)
{
// Expected
}
// Verify that some error cases don't throw exceptions.
cache.DeleteFile(uri); // File already deleted
cache.DeleteFile(new Uri("http://test.com")); // No segments in URI
cache.DeleteFile(new Uri("http://test.com/hello.htm")); // Invalid GUID
cache.DeleteFile(new Uri("http://test.com/6ED48410-A140-434c-B294-0CE81042EEA9")); // No file extension
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_DeleteFileNoExist()
{
// Verify that we can delete a file that doesn't exist without an exception.
WebTransferCache cache;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromSeconds(10));
cache.Start();
try
{
cache.DeleteFile(Guid.NewGuid(), ".pdf");
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_DeleteFileByID()
{
// Verify that we can delete a cached file via its ID.
WebTransferCache cache;
WebTransferFile file;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromSeconds(10));
cache.Start();
try
{
file = cache.GetCommittedFile(Guid.Empty, ".pdf");
cache.GetCommittedFile(file.ID, ".pdf"); // File should still be there
cache.DeleteFile(file.ID, ".pdf");
// File should have been deleted
try
{
cache.GetCommittedFile(file.ID, ".pdf");
Assert.Fail("Expected the file to be deleted.");
}
catch (FileNotFoundException)
{
// Expected
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_UploadBadMD5()
{
// Verify that we can detect a corrupted upload.
WebTransferCache cache;
WebTransferFile transferFile;
Guid id;
byte[] block1 = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] block2 = new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
long pos;
byte[] md5;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(10));
cache.Start();
try
{
// Create a file
transferFile = cache.GetUploadFile(Guid.Empty, ".pdf");
id = transferFile.ID;
Assert.AreNotEqual(Guid.Empty, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the first block
pos = 0;
transferFile.Append(pos, block1);
// Append it again to simulate a duplicate
transferFile.Append(pos, block1);
pos += block1.Length;
// Open an existing file
transferFile = cache.GetUploadFile(id, ".pdf");
Assert.AreEqual(id, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the second block
transferFile.Append(pos, block2);
// Complete the upload and verify the file contents.
md5 = MD5Hasher.Compute(Helper.Concat(block1, block2));
md5[0] = (byte)~md5[0]; // Mess with the hash
try
{
transferFile.Commit(md5);
Assert.Fail("Expected an IOException detecting the MD5 signature mismatch.");
}
catch (IOException)
{
// Expected
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_UploadEncrypt()
{
// Test file upload with encryption.
WebTransferCache cache;
WebTransferFile transferFile;
Guid id;
byte[] block1 = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] block2 = new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
byte[] block;
long pos;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(10));
cache.Start();
try
{
// Create a file
transferFile = cache.GetUploadFile(Guid.Empty, ".pdf");
id = transferFile.ID;
Assert.AreNotEqual(Guid.Empty, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the first block
pos = 0;
transferFile.Append(pos, block1);
// Append it again to simulate a duplicate
transferFile.Append(pos, block1);
pos += block1.Length;
// Open an existing file
transferFile = cache.GetUploadFile(id, ".pdf");
Assert.AreEqual(id, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the second block
transferFile.Append(pos, block2);
// Complete the upload and verify the file contents.
transferFile.Commit(MD5Hasher.Compute(Helper.Concat(block1, block2)));
Assert.AreEqual(id, transferFile.ID);
Assert.IsFalse(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
using (var stream = transferFile.GetStream())
{
block = stream.ReadBytes((int)stream.Length);
CollectionAssert.AreEqual(Helper.Concat(block1, block2), block);
}
// Now encrypt the file and verify.
var key = Crypto.GenerateSymmetricKey(CryptoAlgorithm.AES, 256);
cache.EncryptFile(key, id, ".pdf");
using (var stream = transferFile.GetStream())
{
block = stream.ReadBytes((int)stream.Length);
CollectionAssert.AreNotEqual(Helper.Concat(block1, block2), block); // Shouldn't be equal any more due to the encryption.
}
// Decrypt and verify.
using (var stream = transferFile.GetStream())
{
using (var decryptor = new StreamDecryptor(key))
{
var ms = new MemoryStream();
decryptor.Decrypt(stream, ms);
CollectionAssert.AreEqual(Helper.Concat(block1, block2), ms.ToArray());
}
}
}
finally
{
cache.Stop();
}
}
public void WebTransferCache_Upload()
{
// Test the file upload scenario.
WebTransferCache cache;
WebTransferFile transferFile;
Guid id;
byte[] block1 = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] block2 = new byte[] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
byte[] block;
long pos;
ClearFolder();
cache = new WebTransferCache(new Uri("http://test.com"), folder, "", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(10));
cache.Start();
try
{
// Create a file
transferFile = cache.GetUploadFile(Guid.Empty, ".pdf");
id = transferFile.ID;
Assert.AreNotEqual(Guid.Empty, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the first block
pos = 0;
transferFile.Append(pos, block1);
// Append it again to simulate a duplicate
transferFile.Append(pos, block1);
pos += block1.Length;
// Open an existing file
transferFile = cache.GetUploadFile(id, ".pdf");
Assert.AreEqual(id, transferFile.ID);
Assert.IsTrue(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path + WebTransferCache.UploadExtension));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
// Append the second block
transferFile.Append(pos, block2);
// Complete the upload and verify the file contents.
transferFile.Commit(MD5Hasher.Compute(Helper.Concat(block1, block2)));
Assert.AreEqual(id, transferFile.ID);
Assert.IsFalse(transferFile.IsUploading);
Assert.IsTrue(File.Exists(transferFile.Path));
Assert.AreEqual(new Uri(new Uri("http://test.com/" + cache.HashIDToSubFolder(transferFile.ID)), transferFile.ID.ToString("D") + ".pdf"), transferFile.Uri);
using (var stream = transferFile.GetStream())
{
block = stream.ReadBytes((int)stream.Length);
CollectionAssert.AreEqual(Helper.Concat(block1, block2), block);
}
}
finally
{
cache.Stop();
}
}