static public PhotoAlbum ReadAlbum(string path, string password)
{
StreamReader sr = null;
try
{
string version;
if (password == null || password.Length == 0)
{
sr = new StreamReader(path);
version = sr.ReadLine();
if (version.EndsWith("e"))
{
throw new AlbumStorageException("A password is required to open the album");
}
}
else
{
// Create CryptoReader to use as StreamReader
CryptoReader cr = new CryptoReader(path, password);
version = cr.ReadUnencryptedLine();
if (!version.EndsWith("e"))
{
// Decryption not required
cr.Close();
sr = new StreamReader(path);
version = sr.ReadLine();
}
else
{
string checkLine = cr.ReadLine();
if (checkLine != password)
{
throw new AlbumStorageException("The given password is not valid");
}
sr = cr;
}
}
PhotoAlbum album = new PhotoAlbum();
switch (version)
{
case "63":
ReadAlbumV63(sr, album);
break;
case "91":
case "91e":
ReadAlbumV91(sr, album);
break;
default:
throw new AlbumStorageException("Unrecognized album version");
}
album.HasChanged = false;
return(album);
}
catch (System.Security.Cryptography.CryptographicException cex)
{
throw new AlbumStorageException("Unable to decrypt album " + path, cex);
}
catch (FileNotFoundException fnx)
{
throw new AlbumStorageException("Unable to read album " + path, fnx);
}
finally
{
if (sr != null)
{
sr.Close();
}
}
}
public AlbumManager()
{
_album = new PhotoAlbum();
}
static public void WriteAlbum(PhotoAlbum album, string path)
{
WriteAlbum(album, path, null);
}
public AlbumManager(string name, string pwd) : this()
{
this.name = name;
album = AlbumStorage.ReadAlbum(name, pwd);
Password = pwd;
}