Improves ServerArch so that it can detect the remote architecture by
running uname and checking %PROCESSOR_ARCHITECTURE%. So far, only
x64 Linux and x64 Windows are supported, but in the future it is easy
to add support for others, e.g. aarch64, as well.
Before the detection is run, the remote architecture is guessed first
based on the destination. For instance, if the destination directory
starts with "C:\", it pretty much means Windows. If cdc_rsync_server
exists and runs fine, there's no need for detection.
Since also PortManager depends on the remote architecture, it has to
be adjusted as well. So far, PortManager assumeed that "local" means
Windows and "remote" means Linux. This is no longer the case for
syncing to Windows devices, so this CL adds the necessary abstractions
to PortManager.
Also refactors ArchType into a separate class in common, since it is
used now from several places. It is also expanded to handle future
changes that add support for different processor architectures, e.g.
aarch64.
Adds support for local syncs of files and folders on the same Windows
machine, e.g. cdc_rsync C:\source C:\dest. The two main changes are
- Skip the check whether the port is available remotely with PortManager.
- Do not deploy cdc_rsync_server.
- Run cdc_rsync_server directly, not through an SSH tunnel.
The current implementation is not optimal as it starts
cdc_rsync_server as a separate process and communicates to it via a
TCP port.
Use sftp for deploying remote components instead of scp. sftp has the
advantage that it can also create directries, chmod files etc., so
that we can do everything in one call of sftp instead of mixing scp
and ssh calls.
The downside of sftp is that it can't switch to ~ resp. %userprofile%
for the remote side, and we have to assume that sftp starts in the
user's home dir. This is the default and works on my machines!
cdc_rsync and cdc_stream check the CDC_SFTP_COMMAND env var now and
accept --sftp-command flags. If they are not set, the corresponding
scp flag and env var is still used, with scp replaced by sftp. This is
most likely correct as sftp and scp usually reside in the same
directory and share largely identical parameters.
Adds a ServerArch class whose job it is to encapsulate differences
between Windows and Linux cdc_rsync_servers. It detects the type
based on a heuristic in the destination path. This is not fool proof
and will probably require further work, like falling back to the other
type if the detected one doesn't work.
Uses the ServerArch class to determine the different commands to start
the server and to deploy the server.
Note that the functionality is not well tested on Windows yet, but
copying plain files works.
