/// <summary>
/// Copy file on network share to local volume.
/// </summary>
/// <remarks>
/// Access to the network share is acheived by logging into the domain corresponding to the user credentials provided.
/// Windows impersonation does not suffice, because impersonation is limited to domains with an established trust relationship.
/// We have had to import Win32 API calls to allow login. There are a number of examples online. We follow the
/// one at http://stackoverflow.com/a/2541569/939250 </remarks>
/// <param name="filePathRelativeToShare"></param>
/// <param name="cifsShareDetails"></param>
/// <param name="destFile"></param>
public static void DownloadCifsFileToLocalFile(string filePathRelativeToShare, NFSTO cifsShareDetails, string destFile)
{
try
{
IntPtr token = IntPtr.Zero;
LogonUser(cifsShareDetails.User, cifsShareDetails.Domain, cifsShareDetails.Password, LOGON32_LOGON_NEW_CREDENTIALS, LOGON32_PROVIDER_DEFAULT, ref token);
using (WindowsImpersonationContext remoteIdentity = new WindowsIdentity(token).Impersonate())
{
String dest = "";
if (filePathRelativeToShare.EndsWith(".iso") || filePathRelativeToShare.EndsWith(".vhd") || filePathRelativeToShare.EndsWith(".vhdx"))
{
dest = Path.Combine(cifsShareDetails.UncPath, filePathRelativeToShare);
dest = Utils.NormalizePath(dest);
}
// if the filePathRelativeToShare string don't have filename and only a dir point then find the vhd files in that folder and use
// In the clean setup, first copy command wont be having the filename it contains onlyu dir path.
// we need to scan the folder point and then copy the file to destination.
else if (!filePathRelativeToShare.EndsWith(".vhd") || !filePathRelativeToShare.EndsWith(".vhdx"))
{
// scan the folder and get the vhd filename.
String uncPath = Path.Combine(cifsShareDetails.UncPath, Path.Combine(filePathRelativeToShare.Split('/')));
//uncPath = uncPath.Replace("/", "\\");
DirectoryInfo dir = new DirectoryInfo(uncPath);
FileInfo[] vhdFiles = dir.GetFiles("*.vhd*");
if (vhdFiles.Length > 0)
{
FileInfo file = vhdFiles[0];
dest = file.FullName;
}
}
s_logger.Info(CloudStackTypes.CopyCommand + ": copy " + Path.Combine(cifsShareDetails.UncPath, filePathRelativeToShare) + " to " + destFile);
File.Copy(dest, destFile, true);
remoteIdentity.Undo();
}
}
catch (UnauthorizedAccessException ex)
{
string errMsg = "Invalid user or password for the share " + cifsShareDetails.UncPath;
s_logger.Error(errMsg);
throw new ArgumentException(errMsg, ex);
}
}