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|
#-*- perl -*-
#
# Copyright (C) 2001 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $Id$
# $FML$
#
package FML::Process::Kernel;
use strict;
use Carp;
use FML::Process::Flow;
use FML::Parse;
use FML::Header;
use FML::Config;
use FML::Log qw(Log);
use File::SimpleLock;
use FML::Messages;
sub new
{
my ($self, $args) = @_;
my ($curproc) = {}; # alloc memory as the struct current_process.
my ($cfargs) = {};
# import variables
my (@import_vars) = qw(ml_home_prefix ml_home_dir);
for my $var (@import_vars) {
if (defined $args->{ $var }) {
$cfargs->{ $var } = $args->{ $var };
}
else {
if ($var eq 'ml_home_dir') {
next unless $args->{ need_ml_name };
}
croak "variable $var is not defined.\n";
}
}
# import $fml_version
if (defined $args->{ fml_version }) {
$cfargs->{ fml_version } = "fml-devel ". $args->{ fml_version };
}
# bind FML::Config object to $curproc
use FML::Config;
$curproc->{ config } = new FML::Config $cfargs;
# initialize PCB
use FML::PCB;
$curproc->{ pcb } = new FML::PCB;
bless $curproc, $self;
# load config.cf files, which is passed from loader.
$curproc->load_config_files( $args->{ cf_list } );
# initialize signal
$curproc->_signal_init;
# debug
if ($0 =~ /loader/) { $curproc->debug; sleep 3;}
return $curproc;
}
# default signal handling
sub _signal_init
{
my ($curproc, $args) = @_;
$SIG{'ALRM'} = $SIG{'INT'} = $SIG{'QUIT'} = $SIG{'TERM'} = sub {
my ($signal) = @_;
Log("SIG$signal trapped");
sleep 1;
croak("SIG$signal trapped");
};
}
sub prepare
{
my ($curproc, $args) = @_;
$curproc->parse_incoming_message();
}
sub lock
{
my ($curproc, $args) = @_;
# lock information
my $config = $curproc->{ config };
my $lock_dir = $config->{ lock_dir };
my $lock_file = $config->{ lock_file };
my $lock_type = $config->{ lock_type };
unless (-d $lock_dir) {
use File::Path;
mkpath($lock_dir, 0, 0755);
}
unless (-f $lock_file) {
use FileHandle;
my $fh = new FileHandle $lock_file, "a";
if (defined $fh) {
print $fh "\n";
$fh->close if $fh;
}
}
require File::SimpleLock;
my $lockobj = new File::SimpleLock;
return 0 unless $lock_file ;
my $r = $lockobj->lock( { file => $lock_file } );
if ($r) {
my $pcb = $curproc->{ pcb };
$pcb->set('lock', 'object', $lockobj);
$pcb->set('lock', 'file', $lock_file);
Log( "locked $lock_file" );
}
else {
croak("Error: cannot lock");
}
}
sub unlock
{
my ($curproc, $args) = @_;
my $pcb = $curproc->{ pcb };
my $lockobj = $pcb->get('lock', 'object');
my $lock_file = $pcb->get('lock', 'file');
my $r = $lockobj->unlock( { file => $lock_file } );
if ($r) {
Log( "unlocked $lock_file");
}
else {
croak("Error: cannot lock");
}
}
sub inform_reply_messages
{
my ($curproc, $args) = @_;
}
sub ValidateInComingMail
{
my ($curproc, $args) = @_;
}
sub verify_sender_credential
{
my ($curproc, $args) = @_;
my $r_msg = $curproc->{'incoming_message'};
my $from = $r_msg->{'header'}->get('from');
use Mail::Address;
my ($addr, @addrs) = Mail::Address->parse($from);
# extract the first address as a sender.
$from = $addr->address;
$from =~ s/\n$//o;
unless (@addrs) { # XXX @addrs must be empty.
Log("sender: $from");
use FML::Credential;
$curproc->{'credential'} = new FML::Credential;
$curproc->{'credential'}->set( 'sender', $from );
}
else {
Log("invalid From:");
}
}
sub sender_is_member
{
my ($curproc, $args) = @_;
$curproc->{'credential'}->{'sender'}
# &IsMailingListMember( $from );
}
sub simple_loop_check
{
my ($curproc, $args) = @_;
my $config = $curproc->{ config };
my $r_msg = $curproc->{ incoming_message };
my $header = $r_msg->{ header };
for my $rule (split(/\s+/, $config->{ header_check_rules })) {
if ($header->can($rule)) {
$header->$rule($config, $args);
}
else {
Log("header->${rule}() is undefined");
}
}
}
# fml5::init_main() routine
sub load_config_files
{
my ($curproc, $files) = @_;
# load configuration variables from given files e.g. /some/where.cf
# XXX overload variables from each $cf
for my $cf (@$files) {
$curproc->{ config }->overload( $cf );
}
# XXX We need to expand variables after we load all *cf files.
$curproc->{ config }->expand_variables();
}
sub parse_incoming_message
{
my ($curproc, $args) = @_;
# parse incoming mail to cut off it to the header and the body.
use FML::Parse;
# malloc the incoming message on memory.
# $r_msg is the reference to the memory area.
my $r_msg = {};
($r_msg->{'header'}, $r_msg->{'body'}) = new FML::Parse $curproc, \*STDIN;
$curproc->{'incoming_message'} = $r_msg;
}
# debug
sub debug
{
my ($curproc, $args) = @_;
eval {
use FML::Debug;
my $fp = new FML::Debug;
$fp->show_structure($curproc);
};
}
1;
|
