public static bool CheckExpiration(Models.Paste paste)
{
if (paste.ExpireDate != null && DateTime.Now >= paste.ExpireDate)
{
return(true);
}
if (paste.MaxViews > 0 && paste.Views > paste.MaxViews)
{
return(true);
}
return(false);
}
public static Models.Paste CreatePaste(Config config, TeknikEntities db, string content, string title = "", string syntax = "text", ExpirationUnit expireUnit = ExpirationUnit.Never, int expireLength = 1, string password = "")
{
Models.Paste paste = new Models.Paste();
paste.DatePosted = DateTime.Now;
paste.MaxViews = 0;
paste.Views = 0;
// Generate random url
string url = StringHelper.RandomString(config.PasteConfig.UrlLength);
while (db.Pastes.Where(p => p.Url == url).FirstOrDefault() != null)
{
url = StringHelper.RandomString(config.PasteConfig.UrlLength);
}
paste.Url = url;
// Figure out the expire date (null if 'never' or 'visit')
switch (expireUnit)
{
case ExpirationUnit.Never:
break;
case ExpirationUnit.Views:
paste.MaxViews = expireLength;
break;
case ExpirationUnit.Minutes:
paste.ExpireDate = paste.DatePosted.AddMinutes(expireLength);
break;
case ExpirationUnit.Hours:
paste.ExpireDate = paste.DatePosted.AddHours(expireLength);
break;
case ExpirationUnit.Days:
paste.ExpireDate = paste.DatePosted.AddDays(expireLength);
break;
case ExpirationUnit.Months:
paste.ExpireDate = paste.DatePosted.AddMonths(expireLength);
break;
case ExpirationUnit.Years:
paste.ExpireDate = paste.DatePosted.AddYears(expireLength);
break;
default:
break;
}
if (!Directory.Exists(config.PasteConfig.PasteDirectory))
{
Directory.CreateDirectory(config.PasteConfig.PasteDirectory);
}
// Generate a unique file name that does not currently exist
string filePath = FileHelper.GenerateRandomFileName(config.PasteConfig.PasteDirectory, config.PasteConfig.FileExtension, 10);
string fileName = Path.GetFileName(filePath);
string key = GenerateKey(config.PasteConfig.KeySize);
string iv = GenerateIV(config.PasteConfig.BlockSize);
if (!string.IsNullOrEmpty(password))
{
paste.HashedPassword = HashPassword(key, password);
}
// Encrypt the contents to the file
EncryptContents(content, filePath, password, key, iv, config.PasteConfig.KeySize, config.PasteConfig.ChunkSize);
// Generate a deletion key
string delKey = StringHelper.RandomString(config.PasteConfig.DeleteKeyLength);
paste.Key = key;
paste.KeySize = config.PasteConfig.KeySize;
paste.IV = iv;
paste.BlockSize = config.PasteConfig.BlockSize;
paste.FileName = fileName;
//paste.Content = content;
paste.Title = title;
paste.Syntax = syntax;
paste.DeleteKey = delKey;
return(paste);
}