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#!/usr/bin/ruby
#
# Called by byteback-setup-client to set up a new byteback-setup-client
$: << '/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
@hostname = ARGV.shift
@pubkey = ARGV.join(" ")
error("You must call this from byteback-setup-client on remote host") unless
@hostname &&
/^ssh/.match(@pubkey) &&
ENV['SSH_CONNECTION']
@client_ip = ENV['SSH_CONNECTION'].split(" ").first
Dir.chdir(ENV['HOME']) # don't know why we wouldn't be here
Dir.mkdir(@hostname)
error("Couldn't create btrfs subvolume (needs sudo)") unless
system("sudo btrfs subvolume create #{@hostname}/current")
FileUtils.mkdir_p(".ssh")
if File.exists?(".ssh/authorized_keys") &&
File.read(".ssh/authorized_keys").match(@pubkey.split(/\s+/)[1])
warn("This key already exists in .ssh/authorized_keys on server, nothing to do!")
else
File.open(".ssh/authorized_keys", "a+") do |fh|
fh.print <<-LINE.gsub(/\n/,"")
command="byteback-receive",
from="#{@client_ip}",
environment="BYTEBACK_HOST=#{@hostname}"
#{@pubkey}
LINE
end
end
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