Add ability to pack replays back

[Monstrofil]

Add functionality that allows replay to be modified and packed back.

We need:

1. variables & methods packer with same logic as for unpacking
2. crypter

It seems that while game client is able to read decrypted replays, it is not able to play them because map and scenario data is only in json part of replay.

[imkindaprogrammermyself]

Hmm... Trackpad has already done this before. Basically, we only need to modify the data after the zlib+blowfish decryption then reverse the process to get the modified replay.

What I did is save the msg id of the method/property I want to modify, look up the msg id on the replay, isolate that packet, modify that packet and put it back with the new size.

[nickntg]

Could this be used to unpack replays from earlier versions to newer versions so they can be played by the WOWs client?

[Monstrofil]

Could this be used to unpack replays from earlier versions to newer versions so they can be played by the WOWs client?

Theoretically yes, someone can create translator that migrates replay protocol between client versions. But I don't think that is a good idea because maps change within time, some game resources are added or removed.