Revision dfc48308
Added by Marc Dequènes almost 16 years ago
- ID dfc483086769ea56e5da789007c7d31c5d3c5a76
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#Socket.gethostname
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class CommandParser
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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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logger.info "Executing command: #{cmd}"
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begin
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result_list << execute_cmd(order.user, cmd, order.refs)
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rescue
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logger.info "Command failed: " + $!
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module CyborgHood
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class CommandParser
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def self.run(order)
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result_list = []
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order.commands.each do |cmdstr|
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logger.info "Executing command: #{cmdstr}"
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begin
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result = execute_cmd(order.user, cmdstr, order.refs)
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if result.nil?
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result = OpenStruct.new
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result.cmd = cmdstr
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result.ok = false
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result.message = "Command not recognized."
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result.refs = nil
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end
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rescue CyberError => e
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result = OpenStruct.new
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result.cmd = cmdstr
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result.ok = false
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result.message = e.message.capitalize + "."
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result.refs = nil
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rescue
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logger.warn "Command crashed: " + $!
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result = OpenStruct.new
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result.cmd = cmdstr
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result.ok = false
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result.message = "Internal error. Administrator is warned."
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result.refs = nil
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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}"
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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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result_list
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end
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private
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private
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def self.execute_cmd(user, cmdstr, refs)
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cmdline = Shellwords.shellwords(cmdstr)
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subsys = cmdline.shift
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def self.execute_cmd(user, cmdstr, refs)
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cmdline = Shellwords.shellwords(cmdstr)
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subsys = cmdline.shift
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result = OpenStruct.new
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result.cmd = cmdstr
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ok = true
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case subsys.upcase
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when "DNS"
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case cmdline.shift.upcase
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when "INFO"
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if cmdline.empty?
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result = OpenStruct.new
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result.cmd = cmdstr
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result.ok = false
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ok = true
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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 = CyborgHood::DnsDomain.find_by_manager(user)
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txt_list = list.collect{|z| z.cn }.sort.join(", ")
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logger.info "User is manager of the following zones: " + txt_list
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result.message = "You are manager of the following zones: " + txt_list
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else
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ok = false
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end
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when "GET"
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case cmdline.shift.upcase
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when "ZONE"
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zone = cmdline.shift.downcase
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dom = CyborgHood::DnsDomain.new(zone)
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logger.info "User requesting zone content for '#{zone}'"
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if dom.hosted?
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if dom.managed_by? user
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logger.info "User is manager of the zone"
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srv_dns = CyborgHood::Services::DNS.new(zone)
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result.message = "Requested zone content attached."
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zone_ref = {:content => srv_dns.read_zone, :filename => "dnszone_#{zone}.txt"}.to_ostruct
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result.refs = [zone_ref]
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else
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logger.info "User is not allowed to manage the zone"
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result.ok = true
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result.message = "You are manager of the following zones: #{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 = CyborgHood::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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else
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logger.info "Zone not hosted"
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result.message "This zone is not hosted here."
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srv_dns = CyborgHood::Services::DNS.new(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 => srv_dns.read_zone, :filename => "dnszone_#{zone}.txt"}.to_ostruct
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result.refs = [zone_ref]
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end
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else
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ok = false
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end
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when "SET"
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case cmdline.shift.upcase
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when "ZONE"
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zone = cmdline.shift.downcase
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dom = CyborgHood::DnsDomain.new(zone)
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logger.info "User requesting zone content for '#{zone}'"
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if dom.hosted?
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if dom.managed_by? user
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logger.info "User is manager of the zone"
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srv_dns = CyborgHood::Services::DNS.new(zone)
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content_ref = cmdline.shift.downcase
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if content_ref =~ /^@(\d+)$/
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part_ref = $1.to_i
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if (1..refs.size).include? part_ref
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part = refs[part_ref]
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if part.content_type == "text/plain"
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f = Tempfile.new(zone)
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f.write(part.body)
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f.close
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logger.debug "Created temporary zone file '#{f.path}'"
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srv_dns = CyborgHood::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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result = srv_dns.check_zone_file(f.path)
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if result.ok
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logger.debug "New serial: #{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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if current_serial.nil? or result.serial > current_serial
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begin
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srv_dns.write_zone_from_file(f.path)
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f.close!
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logger.info "zone changed"
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if srv_dns.reload_zone
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logger.info "zone reloaded"
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else
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logger.info "zone reload failed, replacing old content"
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srv_dns.replace_zone_with_backup
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result.message = "Internal error."
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return result
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end
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rescue
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logger.debug "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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else
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logger.info "zone serial is not superior to 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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else
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logger.info "new zone file is invalid"
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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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f.close!
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else
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logger.info "attachment for zone is not plain text"
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result.message = "Attachment has wrong type."
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return result
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end
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else
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logger.info "attachement for zone not found"
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result.message = "Attachment number not found."
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return result
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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 = CyborgHood::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 = CyborgHood::Services::DNS.new(zone)
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return if cmdline.empty?
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content_ref = cmdline.shift.downcase
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return unless content_ref =~ /^@(\d+)$/
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part_ref = $1.to_i
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unless (1..refs.size).include? part_ref
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result.message = "Attachment number not found."
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return result
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end
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part = refs[part_ref]
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unless part.content_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.body)
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f.close
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logger.debug "Created temporary zone file '#{f.path}'"
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srv_dns = CyborgHood::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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ok = false
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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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else
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logger.info "User is not allowed to manage the zone"
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result.message = "You are not allowed to manage this zone."
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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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else
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logger.info "Zone not hosted"
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result.message "This zone is not hosted here."
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end
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else
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ok = false
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end
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else
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ok = false
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end
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else
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ok = false
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end
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if not ok
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result.message = "Command not recognized"
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result.refs = nil
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logger.info "Command not recognized: #{cmdstr}"
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if result.message.nil?
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# here fall lost souls
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nil
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else
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result
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end
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end
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result
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end
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end
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# imap.store(message_id, "+FLAGS", [:Deleted])
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# imap.expunge()
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module CyborgHood
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# not yet ready to be a real Cyborg
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class Postman #< Cyborg
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def initialize
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Also available in: Unified diff
[evol] reorganized CommandParser, and improved messages and error handling