public void GetMD5Imp()
{
ICheckSum impl = CheckSumImplList.GetImplementation(
CheckSumType.MD5);
Assert.IsNotNull(impl);
Assert.IsInstanceOf <Md5Sum>(impl);
}
public void GetCRC32Imp()
{
ICheckSum impl = CheckSumImplList.GetImplementation(
CheckSumType.CRC32);
Assert.IsNotNull(impl);
Assert.IsInstanceOf <CRC32Sum>(impl);
}
public void GetSHA1Imp()
{
ICheckSum impl = CheckSumImplList.GetImplementation(
CheckSumType.SHA1);
Assert.IsNotNull(impl);
Assert.IsInstanceOf <Sha1Sum>(impl);
}
/// <summary>
/// Calculate checksums.
/// </summary>
/// <param name="itemList">List of items for which to calculate.</param>
/// <param name="progressInfo">Returns information about calculation
/// progress.</param>
public void Calculate(List <CheckSumItem> itemList,
ref ProgressInfo progressInfo)
{
ICheckSum sumImpl = CheckSumImplList.GetImplementation(_sumType);
int i = 0;
foreach (CheckSumItem ci in itemList)
{
progressInfo.Filename = ci.FullPath;
// Check if fhe file is found and accessible
try
{
FileInfo fi = new FileInfo(ci.FullPath);
if (!fi.Exists)
{
continue;
}
}
catch
{
// Ignore non-existing and non-accessible files
// TODO: Should we inform user?
continue;
}
try
{
using (FileStream filestream = new FileStream(ci.FullPath, FileMode.Open, FileAccess.Read))
{
byte[] hash = sumImpl.Calculate(filestream);
filestream.Close();
ci.SetSum(hash);
}
}
catch (IOException)
{
//TODO: Set failure status to checksum item.
}
// Update progress information after item completed
i++;
progressInfo.Now = i;
if (progressInfo.IsStopping())
{
progressInfo.ActivityEnded();
break;
}
}
}
/// <summary>
/// Verify checksums.
/// </summary>
/// <param name="itemList">List of items to verify.</param>
/// <param name="progressInfo">Returns information about calculation
/// progress.</param>
/// <returns>
/// true if all items succeeded the verification, false if
/// one or more items failed verification.
/// </returns>
public bool Verify(List <CheckSumItem> itemList,
ref ProgressInfo progressInfo)
{
bool verifysucceeded = true;
ICheckSum sumImpl = CheckSumImplList.GetImplementation(_sumType);
int i = 0;
foreach (CheckSumItem ci in itemList)
{
progressInfo.Filename = ci.FullPath;
// If verification finds an item which does not have checksum
// (not calculated yet?) just ignore the item. Or maybe we
// should calculate checksum first?
if (ci.CheckSum == null)
{
verifysucceeded = false;
continue;
}
// Check if fhe file is found and accessible
try
{
FileInfo fi = new FileInfo(ci.FullPath);
if (!fi.Exists)
{
verifysucceeded = false;
continue;
}
}
catch
{
// Ignore non-existing and non-accessible files
// TODO: Should we inform user?
verifysucceeded = false;
continue;
}
bool verified = false;
try
{
using (FileStream filestream = new FileStream(ci.FullPath, FileMode.Open, FileAccess.Read))
{
verified = sumImpl.Verify(filestream, ci.CheckSum.GetAsByteArray());
filestream.Close();
}
}
catch (IOException)
{
// TODO: Set failure status to checksum item.
// Let verification just fail when not implemented
// TODO: Need to inform the user, but how?
// For debug builds just throw the exception for reminder..
#if DEBUG
throw;
#endif
}
if (verified)
{
ci.Verified = VerificationState.VerifyOK;
}
else
{
ci.Verified = VerificationState.VerifyFailed;
if (verifysucceeded == true)
{
// Set to false when we find first failed item
verifysucceeded = false;
}
}
// Update progress information after item completed
i++;
progressInfo.Now = i;
if (progressInfo.IsStopping())
{
progressInfo.ActivityEnded();
break;
}
}
return(verifysucceeded);
}