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Revision f0a75e9c

Added by Marc Dequènes about 15 years ago

  • ID f0a75e9c7874167708380ded63640b0f3f0229ea

[evol] commands management rework #1: moved command parsing into the Mail class, so the CommandParser is now a CommandRunner, and does not have to understand mail parts at all

View differences:

bin/postman
end
logger.debug "Message accepted, processing orders..."
result_list = CommandParser.run(order)
result_list = CommandRunner.run(order)
# create transcript
logger.debug "Preparing reply"
......
end
end
class CommandParser
class CommandRunner
include GetText
def self.run(order)
result_list = []
order.commands.each do |cmdstr|
logger.info "Executing command: #{cmdstr}"
order.commands.each do |cmd|
logger.info "Executing command: #{cmd.cmdline}"
begin
result = execute_cmd(order.user, cmdstr, order.references)
result = execute_cmd(order.user, cmd.cmdsplit, order.shared_params)
if result.nil?
result = OpenStruct.new
result.cmd = cmdstr
result.cmd = cmd.cmdline
result.ok = false
result.message = _("Command not recognized.")
result.refs = nil
end
rescue CyberError => e
result = OpenStruct.new
result.cmd = cmdstr
result.cmd = cmd.cmdline
result.ok = false
result.message = e.message.capitalize + "."
result.refs = nil
rescue
logger.warn "Command crashed: " + $!
result = OpenStruct.new
result.cmd = cmdstr
result.cmd = cmd.cmdline
result.ok = false
result.message = _("Internal error. Administrator is warned.")
result.refs = nil
......
private
def self.execute_cmd(user, cmdstr, refs)
cmdline = Shellwords.shellwords(cmdstr)
def self.execute_cmd(user, cmdline, shared_params)
subsys = cmdline.shift
result = OpenStruct.new
......
srv_dns = CyborgHood::Services::DNS.new(zone)
return if cmdline.empty?
content_ref = cmdline.shift.downcase
return unless content_ref =~ /^@(\d+)$/
part_ref = $1.to_i
unless (1..refs.size).include? part_ref
content_ref = cmdline.shift
if content_ref.nil?
result.message = _("Attachment number not found.")
return result
end
part = refs[part_ref]
unless part.content_type == "text/plain"
part = shared_params[content_ref]
unless part.type == "text/plain"
result.message = _("Attachment has wrong content-type.")
return result
end
f = Tempfile.new(zone)
f.write(part.body)
f.write(part.content)
f.close
logger.debug "Created temporary zone file '#{f.path}'"
lib/cyborghood/mail.rb
# This class handles RFC3156 signed messages, validates them, and extract orders properly.
# Encrypted content are not implemented yet.
module CyborgHood
class Command
attr_reader :cmdline, :cmdsplit
def initialize(cmdline, cmdsplit)
@cmdline = cmdline
@cmdsplit = cmdsplit
end
end
class SharedParameter
attr_reader :type, :content
def initialize(content, type = nil)
@content = content
@type = type
end
end
class ParameterReference
attr_reader :reference
def initialize(reference)
@reference = reference
end
end
class Order
attr_accessor :ok, :message, :system_message, :user, :commands, :references
attr_accessor :ok, :message, :system_message, :user, :commands, :shared_parameters
attr_writer = :warn_sender
def initialize(ok, message = nil, system_message = nil)
......
def parse_plain
command_txt = nil
refs = nil
shared_params = nil
if multipart?
if parts[0].content_type == "text/plain"
command_txt = self.parts[0].body
refs = self.parts.collect{|p| p.dup }
shared_params = {}
i = 1
self.parts.each do |p|
shared_params[i] = SharedParameter.new(p.body, p.content_type)
filename = p.header['content-type'].params('filename')
shared_params[filename] = ParameterReference.new(i) if filename
i += 1
end
end
else
command_txt = self.body if self.content_type == "text/plain"
refs = []
shared_params = {}
end
unless command_txt
order = Order.new(false, N_("Mail does not contain a proper text part for commands."))
......
# stop processing when detecting message signature
break if line == "-- "
commands << sline
used_refs = []
cmd_parts = sline.shellsplit.collect do |word|
if =~ /^@([a-zA-Z0-9._-]+)$/
ref = $1
d_ref, d_param = dereference_param(shared_params, param)
# TODO: should add error message for attachment not found in the Command
used_refs << d_ref
d_param
else
word
end
end
commands << Command.new(sline, cmd_parts)
end
shared_params.delete_if{|ref, param| not used_refs.include?(ref) }
logger.debug "Mail OK"
mark_processed(self.signature_timestamp)
order = Order.new(true)
order.user = self.user
order.commands = commands
order.references = refs
order.references = shared_params
order
end
def dereference_param(shared_params, param)
if param.is_a? SharedParameter
[ref, ParameterReference(ref)]
elsif param.is_a? ParameterReference
d_ref = param.reference
d_param = shared_params[d_ref]
return dereference_param(shared_params, d_param)
else
nil
end
end
def parse_signed
sigs_check = verify_pgp_signature()
return Order.new(false, N_("Mail not formatted correctly (signed part).")) if sigs_check.nil? or sigs_check.size != 1

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