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#!/usr/bin/ruby
#
# Program to receive backups and run rsync in receive mode. Must check that
# user as authorised by SSH is allowed to access particular directory.
$LOAD_PATH << '/usr/lib/byteback'
require 'trollop'
require 'byteback'
include Byteback::Log
if ENV['SSH_ORIGINAL_COMMAND']
ARGV.concat(ENV['SSH_ORIGINAL_COMMAND'].split(' '))
end
byteback_host = ENV['BYTEBACK_HOST']
fatal('BYTEBACK_HOST environment not set') unless byteback_host
byteback_root = ENV['HOME'] + '/' + ENV['BYTEBACK_HOST']
fatal("#{byteback_root} does not exist") unless File.directory?(byteback_root)
#
# Force restores to be limited to the hostname we're connecting form
#
if (ARGV[0] == 'restore')
ARGV[0] = 'rsync'
a = []
ARGV.each do |tmp|
if tmp =~ /^\/(.*)/
tmp = "#{byteback_host}/#{Regexp.last_match(1).dup}"
end
a.push(tmp)
end
exec(*a)
elsif ARGV[0] == 'rsync'
ARGV[-1] = "#{byteback_root}/current"
exec(*ARGV)
elsif ARGV[0] == 'byteback-snapshot'
ARGV.concat(['--root', "#{byteback_root}"])
exec(*ARGV)
end
opts = Trollop.options do
opt :verbose, 'Print diagnostics'
opt :ping, 'Check connection parameters and exit'
opt :list, 'Show backed up files matching the given pattern', type: :string
opt :restore, 'Perform a restoration operation', type: :string
opt :complete, 'Mark current backup as complete'
end
error('Please only choose one mode') if opts[:ping] && opts[:complete]
if opts[:complete]
system('byteback-snapshot', '--root', byteback_root)
elsif opts[:list]
system("cd #{byteback_root} && find . -print | grep #{opts[:list]}")
exit(0)
elsif opts[:ping]
exit 0
else
STDERR.print "byteback-receive failed\n"
exit 9
end
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