private async Task DecodeFolder(IEnumerable <string> encfolder, string rootpath = null)
{
foreach (var folder in encfolder)
{
if (!Directory.Exists(folder))
{
Log("folder not found : {0}", folder);
continue;
}
var decparent = rootpath;
if (decparent == null)
{
decparent = Directory.GetParent(folder).FullName;
}
var encfoldername = (folder.EndsWith("\\")) ? Path.GetDirectoryName(folder) : folder;
var i = encfoldername.LastIndexOf('\\');
if (i >= 0)
{
encfoldername = encfoldername.Substring(i + 1);
}
var decfoldername = CryptCarotDAV.DecryptFilename(encfoldername);
if (decfoldername == null)
{
Log("foldername decode error : {0}", folder);
continue;
}
var decfolder = Path.Combine(decparent, decfoldername);
if (Directory.Exists(decfolder))
{
Log("Exists : {0}", decfolder);
continue;
}
try
{
Directory.CreateDirectory(decfolder);
}
catch (Exception ex)
{
Log("CreateDirectory failed : {0} {1}", decfolder, ex.Message);
continue;
}
Log("OK : {0}->{1}", folder, decfolder);
// subitems
var subfiles = Directory.GetFiles(folder);
var subdirs = Directory.GetDirectories(folder);
await DecodeFile(subfiles, decfolder);
await DecodeFolder(subdirs, decfolder);
}
}
private async Task DecodeFile(IEnumerable <string> encfiles, string rootpath = null)
{
foreach (var file in encfiles)
{
if (!File.Exists(file))
{
Log("file not found : {0}", file);
continue;
}
var decfilepath = rootpath;
if (decfilepath == null)
{
decfilepath = Path.GetDirectoryName(file);
}
var encfilename = Path.GetFileName(file);
var decfilename = CryptCarotDAV.DecryptFilename(encfilename);
if (decfilename == null)
{
Log("filename decode error : {0}", file);
continue;
}
var decfile = Path.Combine(decfilepath, decfilename);
if (File.Exists(decfile))
{
Log("Exists : {0}", decfile);
continue;
}
using (var efile = File.OpenRead(file))
using (var dfile = File.OpenWrite(decfile))
using (var cfile = new CryptCarotDAV.CryptCarotDAV_DecryptStream(efile))
{
try
{
await cfile.CopyToAsync(dfile, 81920, cts.Token);
}
catch (Exception ex)
{
Log("Decode Error : {0}->{1} {2}", file, decfile, ex.Message);
continue;
}
}
Log("OK : {0}->{1}", file, decfile);
}
}