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#--
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# CyborgHood, a distributed system management software.
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# Copyright (c) 2009-2010 Marc Dequènes (Duck) <Duck@DuckCorp.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#++
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require 'tempfile'
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require 'shellwords'
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require 'cyborghood/order'
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require 'cyborghood/objects'
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require 'cyborghood/services/dns'
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module CyborgHood
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class CommandRunner
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include I18nTranslation
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def self.run(order)
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result_list = []
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order.commands.each do |cmd|
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result = OpenStruct.new
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result.cmd = cmd.cmdline
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result.ok = false
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if cmd.valid?
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logger.info "Executing command: #{cmd.cmdline}"
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begin
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execute_cmd(order.user, cmd.cmdsplit, order.shared_parameters, result)
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rescue CyberError => e
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result.message = tm_(e.message.capitalize + ".")
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rescue
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logger.error "Command crashed: " + $!
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logger.error "Crash trace: " + $!.backtrace.join("\n")
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result.message = _("Internal error. Administrator is warned.")
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end
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tag = result.ok ? "SUCCESS" : "FAILURE"
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logger.debug "Command result: [#{tag}] #{result.message.untranslated}"
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else
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logger.info "Invalid command detected: #{cmd.cmdline}"
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cmd.parsing_errors.collect{|err| logger.debug "Invalid command detected - reason: " + err.untranslated }
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result.message = cmd.parsing_errors.collect{|err| err.to_s }.join("\n")
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end
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result_list << result
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end
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result_list
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end
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private
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def self.execute_cmd(user, cmdline, shared_parameters, result)
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subsys = cmdline.shift
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case subsys.upcase
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when "DNS"
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return if cmdline.empty?
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case cmdline.shift.upcase
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when "INFO"
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return unless cmdline.empty?
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list = DnsDomain.find_by_manager(user)
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txt_list = list.collect{|z| z.cn }.sort.join(", ")
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result.ok = true
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result.message = _("You are manager of the following zones: %{zone_list}.", :zone_list => txt_list)
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when "GET"
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return if cmdline.empty?
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case cmdline.shift.upcase
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when "ZONE"
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return if cmdline.empty?
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zone = cmdline.shift.downcase
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dom = DnsDomain.new(zone)
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unless dom.hosted?
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result.message = _("This zone is not hosted here.")
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return result
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end
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unless dom.managed_by? user
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result.message = _("You are not allowed to manage this zone.")
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return result
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end
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srv_dns = Services::DNS.new(zone)
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zone_content = srv_dns.read_zone
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result.ok = true
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result.message = _("Requested zone content attached.")
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zone_ref = {:content => zone_content, :filename => "dnszone_#{zone}.txt"}.to_ostruct
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result.refs = [zone_ref]
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end
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when "SET"
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return if cmdline.empty?
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case cmdline.shift.upcase
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when "ZONE"
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return if cmdline.empty?
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zone = cmdline.shift.downcase
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dom = DnsDomain.new(zone)
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unless dom.hosted?
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result.message = _("This zone is not hosted here.")
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return result
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end
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unless dom.managed_by? user
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result.message = _("You are not allowed to manage this zone.")
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return result
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end
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srv_dns = Services::DNS.new(zone)
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return if cmdline.empty?
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content_ref = cmdline.shift
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part = shared_parameters[content_ref]
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unless part.type == "text/plain"
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result.message = _("Attachment has wrong content-type.")
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return result
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end
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f = Tempfile.new(zone)
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f.write(part.content)
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f.close
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logger.debug "Created temporary zone file '#{f.path}'"
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srv_dns = Services::DNS.new(zone)
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current_serial = srv_dns.serial
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logger.debug "Current serial: #{current_serial}"
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dns_result = srv_dns.check_zone_file(f.path)
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unless dns_result.ok
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result.message = _("Invalid zone data.")
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f.close!
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return result
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end
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logger.debug "New serial: #{dns_result.serial}"
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# allow new serial or missing serial (to allow creating a new zone or replacing a broken zone)
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unless current_serial.nil? or dns_result.serial > current_serial
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result.message = _("Zone serial is not superior to current serial.")
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f.close!
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return result
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end
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begin
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srv_dns.write_zone_from_file(f.path)
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logger.debug "zone changed"
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if srv_dns.reload_zone
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logger.debug "zone reloaded"
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result.ok = true
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result.message = _("Zone updated.")
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else
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logger.warn "zone reload failed, replacing old content"
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srv_dns.replace_zone_with_backup
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result.message = _("Internal error. Administrator is warned.")
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end
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rescue
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logger.warn "Writing zone file failed"
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raise
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ensure
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f.close!
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end
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end
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end
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end
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if result.message.nil?
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# here fall lost souls
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result.message = _("Command not recognized.")
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end
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end
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end
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end
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