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#!/usr/bin/ruby
#
# Run on a client machine to set up backups for the first time
require 'fileutils'
require 'trollop'
def error(message)
STDERR.print "*** #{message}\n"
exit 1
end
def verbose(message)
print "#{message}\n"
end
opts = Trollop::options do
opt :hostname, "Set host name for backups",
:type => :string
opt :destination, "Backup destination (i.e. user@host:/path)",
:type => :string
end
@destination = opts[:destination]
@hostname = opts[:hostname]
_dummy, @destination_user, @destination_host, colon, @destination_path =
/^(.*)?(?:@)([^:]+)(:)(.*)?$/.match(@destination).to_a
error("Must be a remote path") unless colon
if !@hostname
@hostname = `hostname -f`
print "No hostname set, using #{@hostname}"
end
error "This host already appears set up - you need to delete /etc/byteback if not" if
File.readable?("/etc/byteback/key")
FileUtils.mkdir_p("/etc/byteback")
error "Couldn't generate SSH key" unless
system("ssh-keygen -q -t rsa -C \"byteback client key\" -N \"\" -f /etc/byteback/key")
key_pub = File.read("/etc/byteback/key.pub")
error "Setup didn't work" unless
system("ssh -i /etc/byteback/key -l #{@destination_user} #{@destination_host} byteback-setup-client-receive #{@hostname} #{key_pub}")
File.open("/etc/byteback/destination", "w") { |f| f.print @destination }
print "Setup worked! To take your first backup run: byteback-backup --verbose\n"
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