public void DownloadLink(string text)
{
FileLink link = FileLink.Decode(text, Core);
SharedFile file = new SharedFile(Core.Network.Local.ClientID);
file.Name = link.FileName;
if (!Utilities.MemCompare(link.PublicOpID, Core.User.Settings.PublicOpID))
{
throw new Exception("File Link is not for this Op");
}
file.Size = link.Size;
file.Hash = link.Hash;
file.FileKey = link.Key;
file.FileID = OpTransfer.GetFileID(ServiceID, file.Hash, file.Size);
if (link.Sources != null)
{
for (int i = 0; i < link.Sources.Length; i += 10)
{
file.Sources.Add(DhtClient.FromBytes(link.Sources, i));
}
}
DownloadFile(file);
}
public string GetFileLink(ulong user, SharedFile file)
{
byte[] sources = null;
// if local shared file, get the sources we know of
if (user == Core.UserID && file.ClientID == Core.Network.Local.ClientID)
{
foreach (DhtClient client in file.Sources)
{
sources = (sources == null) ? client.ToBytes() : Utilities.CombineArrays(sources, client.ToBytes());
}
}
// else getting link from remote share, so add it's address as a location
else
{
sources = new DhtClient(user, file.ClientID).ToBytes();
}
FileLink link = new FileLink()
{
OpName = Core.User.Settings.Operation,
FileName = file.Name,
PublicOpID = Core.User.Settings.PublicOpID,
Size = file.Size,
Hash = file.Hash,
Key = file.FileKey,
Sources = sources
};
return(link.Encode(Core));
}
public static FileLink Decode(string text, OpCore core)
{
FileLink link = new FileLink();
if (!text.StartsWith("deops://"))
{
throw new Exception("Invalid Link");
}
string[] parts = text.Substring(8).Split('/');
if (parts.Length < 5)
{
throw new Exception("Invalid Link");
}
if (parts[1] != "file")
{
throw new Exception("Invalid Link");
}
link.FileName = HttpUtility.UrlDecode(parts[2]);
byte[] endtag = Utilities.FromBase64String(parts[4]);
if (endtag.Length < (8 + 8 + 20 + 32))
{
throw new Exception("Invalid Link");
}
link.PublicOpID = Utilities.ExtractBytes(endtag, 0, 8);
byte[] cryptTag = Utilities.ExtractBytes(endtag, 8, endtag.Length - 8);
if (core != null)
{
cryptTag = Utilities.DecryptBytes(cryptTag, cryptTag.Length, core.Network.OpCrypt.Key);
link.Size = BitConverter.ToInt64(Utilities.ExtractBytes(cryptTag, 0, 8), 0);
link.Hash = Utilities.ExtractBytes(cryptTag, 8, 20);
link.Key = Utilities.ExtractBytes(cryptTag, 8 + 20, 32);
if (parts.Length >= 6)
{
link.Sources = Utilities.FromBase64String(parts[5]);
if (link.Sources != null)
{
link.Sources = Utilities.DecryptBytes(link.Sources, link.Sources.Length, core.Network.OpCrypt.Key);
}
}
}
return(link);
}
public static FileLink Decode(string text, OpCore core)
{
FileLink link = new FileLink();
if (!text.StartsWith("deops://"))
throw new Exception("Invalid Link");
string[] parts = text.Substring(8).Split('/');
if (parts.Length < 5)
throw new Exception("Invalid Link");
if (parts[1] != "file")
throw new Exception("Invalid Link");
link.FileName = HttpUtility.UrlDecode(parts[2]);
byte[] endtag = Utilities.FromBase64String(parts[4]);
if (endtag.Length < (8 + 8 + 20 + 32))
throw new Exception("Invalid Link");
link.PublicOpID = Utilities.ExtractBytes(endtag, 0, 8);
byte[] cryptTag = Utilities.ExtractBytes(endtag, 8, endtag.Length - 8);
if (core != null)
{
cryptTag = Utilities.DecryptBytes(cryptTag, cryptTag.Length, core.Network.OpCrypt.Key);
link.Size = BitConverter.ToInt64(Utilities.ExtractBytes(cryptTag, 0, 8), 0);
link.Hash = Utilities.ExtractBytes(cryptTag, 8, 20);
link.Key = Utilities.ExtractBytes(cryptTag, 8 + 20, 32);
if (parts.Length >= 6)
{
link.Sources = Utilities.FromBase64String(parts[5]);
if (link.Sources != null)
link.Sources = Utilities.DecryptBytes(link.Sources, link.Sources.Length, core.Network.OpCrypt.Key);
}
}
return link;
}
public string GetFileLink(ulong user, SharedFile file)
{
byte[] sources = null;
// if local shared file, get the sources we know of
if (user == Core.UserID && file.ClientID == Core.Network.Local.ClientID)
{
foreach (DhtClient client in file.Sources)
sources = (sources == null) ? client.ToBytes() : Utilities.CombineArrays(sources, client.ToBytes());
}
// else getting link from remote share, so add it's address as a location
else
sources = new DhtClient(user, file.ClientID).ToBytes();
FileLink link = new FileLink()
{
OpName = Core.User.Settings.Operation,
FileName = file.Name,
PublicOpID = Core.User.Settings.PublicOpID,
Size = file.Size,
Hash = file.Hash,
Key = file.FileKey,
Sources = sources
};
return link.Encode(Core);
}
