Upgrade to phpseclib version 3

[getpinga]

Is there a reason why phpseclib/phpseclib 3.0 is not supported?

Can I help somehow to add support for it?

Thanks

[sebastianfeldmann]

No particular reason. If we don't have to make weird version if else stuff I don't see any reason to not support it.

[sebastianfeldmann]

phpseclib changed a lot of the API phpbu uses to do SFTP stuff.

Currently there is no way to support both out of the box because the changes are to big to handle in a couple of if else.

Either, we have to build a SFTPClient interface and write the SFTPClientPHPSecLibV2 and SFTPClientPHPSecLibV3 implementations. Then change all phpbu stuff to use the SFTPClient interface and finally write a SFTPClientFactory that creates a client depending on what dependency is loaded.

OR and that would be my preferred way kill support for everything below phpseclib v3 and update everything so it works with the latest version.