private bool ValidateReceivedData(FileTransferIn fileTransfer, out string ErrorMessage)
{
ErrorMessage = "";
switch (fileTransfer.FileType)
{
case FileTransferType.Submarine:
System.IO.Stream stream;
try
{
stream = SaveUtil.DecompressFiletoStream(fileTransfer.FilePath);
}
catch (Exception e)
{
ErrorMessage = "Loading received submarine \"" + fileTransfer.FileName + "\" failed! {" + e.Message + "}";
return(false);
}
if (stream == null)
{
ErrorMessage = "Decompressing received submarine file \"" + fileTransfer.FilePath + "\" failed!";
return(false);
}
try
{
stream.Position = 0;
XmlReaderSettings settings = new XmlReaderSettings
{
DtdProcessing = DtdProcessing.Prohibit,
IgnoreProcessingInstructions = true
};
using (var reader = XmlReader.Create(stream, settings))
{
while (reader.Read())
{
;
}
}
}
catch
{
stream?.Close();
ErrorMessage = "Parsing file \"" + fileTransfer.FilePath + "\" failed! The file may not be a valid submarine file.";
return(false);
}
stream?.Close();
break;
case FileTransferType.CampaignSave:
try
{
var files = SaveUtil.EnumerateContainedFiles(fileTransfer.FilePath);
foreach (var file in files)
{
string extension = Path.GetExtension(file);
if ((!extension.Equals(".sub", StringComparison.OrdinalIgnoreCase) &&
!file.Equals("gamesession.xml")) ||
file.CleanUpPathCrossPlatform(correctFilenameCase: false).Contains('/'))
{
ErrorMessage = $"Found unexpected file in \"{fileTransfer.FileName}\"! ({file})";
return(false);
}
}
}
catch (Exception e)
{
ErrorMessage = $"Loading received campaign save \"{fileTransfer.FileName}\" failed! {{{e.Message}}}";
return(false);
}
break;
}
return(true);
}
