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#!/usr/bin/ruby
#
# Run on a client machine to set up backups for the first time
$: << '/usr/lib/byteback'
require 'fileutils'
require 'trollop'
require 'byteback/util'
require 'byteback/log'
include Byteback::Util
include Byteback::Log
def error(message)
STDERR.print "*** #{message}\n"
exit 1
end
def verbose(message)
print "#{message}\n"
end
opts = Trollop::options do
opt :hostname, "Set host name for backups",
:type => :string
opt :destination, "Backup destination (i.e. user@host:/path)",
:type => :string
end
@destination = opts[:destination]
@hostname = opts[:hostname]
_dummy, @destination_user, @destination_host, colon, @destination_path =
/^(.*)?(?:@)([^:]+)(:)(.*)?$/.match(@destination).to_a
error("Must be a remote path") unless colon
if !@hostname
@hostname = `hostname -f`.chomp
print "No hostname set, using #{@hostname}\n"
end
FileUtils.mkdir_p("/etc/byteback")
if File.readable?("/etc/byteback/key")
warn "Skipping key generation, delete /etc/byteback/key if that's wrong"
else
error "Couldn't generate SSH key" unless
system <<-KEYGEN
ssh-keygen -q -t rsa -C "byteback client key" \
-N "" -f /etc/byteback/key
KEYGEN
end
key_pub = File.read("/etc/byteback/key.pub").chomp
error "Remote 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/host", "w") { |f| f.print @destination }
print "Setup worked! To take your first backup run: byteback-backup --verbose\n"
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