/// <summary>
/// </summary>
/// <param name="append"></param>
/// <returns></returns>
public Stream OpenWriteStream(bool append)
{
if (append)
{
throw new Exception("File Stream Append Not supported.");
}
using (var context = new OnlineFilesEntities())
{
File f = context.Files.FirstOrDefault(d => d.pk_FileId == ObjectGuid);
return(f?.OpenWriteStream(PrincipleFactory.Instance.GetPrinciple(FromType.WebDav), ItemPath));
}
}
/// <summary>
/// Copies the fileId to this Folder.
/// </summary>
/// <param name="destination"></param>
/// <param name="fileId"></param>
/// <param name="destinationName"></param>
/// <param name="user"></param>
/// <param name="context"></param>
/// <param name="dbcxtransaction"></param>
public static void CopyFileHere(this Folder destination, Guid fileId, string destinationName, Principal user, OnlineFilesEntities context = null, DbContextTransaction dbcxtransaction = null)
{
bool createdContext = false;
bool createdTransaction = false;
bool didRollback = false;
if (context == null)
{
createdContext = true;
context = new OnlineFilesEntities();
}
if (dbcxtransaction == null)
{
dbcxtransaction = context.Database.BeginTransaction();
createdTransaction = true;
}
try
{
var destSecurity = context.FolderSecurities.Where(d => d.fk_FolderId == destination.pk_FolderId);
//Can the user create files at the destination location?
if (destSecurity.Any(d => d.canCreateFiles && user.UserProfile.mySecurityGroups.Contains(d.SecurityObjectId)))
{
var file = context.Files
.Include(x => x.FileSecurities)
.Include(x => x.FileDatas)
.FirstOrDefault(d => d.pk_FileId == fileId);
//Can the user Read the file to be copied?
if (file.FileSecurities.Any(f => user.UserProfile.mySecurityGroups.Contains(f.SecurityObjectId) && f.canRead))
{
File newFile = File.Create(destination.pk_FolderId, file.Name, user.UserProfile, true);
context.SaveChanges();
//Copy the file data
using (Stream s = file.OpenReadStream(user))
using (Stream d = newFile.OpenWriteStream(user))
s.CopyTo(d);
//Copy the file Security
foreach (FileSecurity security in file.FileSecurities)
{
FileSecurity nsec = context.FileSecurities.FirstOrDefault(d => d.fk_FileId == newFile.pk_FileId && d.SecurityObjectId == security.SecurityObjectId);
if (nsec == null)
{
nsec = new FileSecurity()
{
canRead = security.canRead,
canWrite = security.canWrite,
CanDelete = security.CanDelete,
fk_FileId = newFile.pk_FileId,
SecurityObjectId = security.SecurityObjectId
};
context.FileSecurities.Add(nsec);
}
else
{
nsec.canRead = nsec.canRead || security.canRead;
nsec.CanDelete = nsec.CanDelete || security.CanDelete;
nsec.canWrite = nsec.canWrite || security.canWrite;
}
}
context.SaveChanges();
}
else
{
throw new SecurityException("Not Authorized.");
}
}
else
{
throw new SecurityException("Not Authorized.");
}
}
catch (Exception)
{
//If we got an error and we created the transaction, roll it back.
if (createdTransaction)
{
dbcxtransaction.Rollback();
didRollback = true;
}
throw;
}
finally
{
if (createdTransaction)
{
//If we didn't roll back the transaction, commit it.
if (!didRollback)
{
dbcxtransaction.Commit();
}
dbcxtransaction.Dispose();
}
if (createdContext)
{
context.Dispose();
}
}
}