-#
-# Investigate whether an external node is accessible
-#
-# If it is, make it believable otherwise mark as not
-# to be believed.
-#
-# It is possible to store up state for a node to be
-# investigated, so that if it is accessible, its details
-# will be passed on to whomsoever might be interested.
-#
-# Copyright (c) 2004 Dirk Koopman, G1TLH
-#
-#
-#
-
-use strict;
-
-package Investigate;
-
-use DXDebug;
-use DXUtil;
-
-
-use vars qw (%list %valid $pingint $maxpingwait);
-
-$pingint = 5; # interval between pings for each investigation
- # this is to stop floods of pings
-$maxpingwait = 120; # the maximum time we will wait for a reply to a ping
-my $lastping = 0; # last ping done
-%list = (); # the list of outstanding investigations
-%valid = ( # valid fields
- call => '0,Callsign',
- start => '0,Started at,atime',
- version => '0,Node Version',
- build => '0,Node Build',
- here => '0,Here?,yesno',
- conf => '0,In Conf?,yesno',
- pingsent => '0,Time ping sent,atime',
- state => '0,State',
- via => '0,Via Node',
- pcxx => '0,Stored PCProt,parray',
- );
-
-my %via = ();
-
-sub new
-{
- my $pkg = shift;
- my $call = shift;
- my $via = shift;
-
- my $self = $list{"$via,$call"};
- unless ($self) {
- $self = bless {
- call=>$call,
- via=>$via,
- start=>$main::systime,
- state=>'start',
- pcxx=>[],
- }, ref($pkg) || $pkg;
- $list{"$via,$call"} = $self;
- }
- dbg("Investigate: New $call via $via") if isdbg('investigate');
- return $self;
-}
-
-sub get
-{
- return $list{"$_[1],$_[0]"};
-}
-
-sub chgstate
-{
- my $self = shift;
- my $state = shift;
- dbg("Investigate: $self->{call} via $self->{via} state $self->{state}->$state") if isdbg('investigate');
- $self->{state} = $state;
-}
-
-sub handle_ping
-{
- my $self = shift;
- dbg("Investigate: ping received for $self->{call} via $self->{via}") if isdbg('investigate');
- if ($self->{state} eq 'waitping') {
- $via{$self->{via}} = 0; # cue up next ping on this interface
- delete $list{"$self->{via},$self->{call}"};
- my $user = DXUser->get_current($self->{via});
- if ($user) {
- $user->set_believe($self->{call});
- $user->put;
- }
- my $dxchan = DXChannel::get($self->{via});
- if ($dxchan) {
- dbg("Investigate: sending PC19 for $self->{call}") if isdbg('investigate');
- foreach my $pc (@{$self->{pcxx}}) {
- no strict 'refs';
- my $handle = "handle_$pc->[0]";
- dbg("Investigate: sending PC$pc->[0] (" . join(',', @$pc) . ")") if isdbg('investigate');
- my $regex = $pc->[1];
- $regex =~ s/\^/\\^/g;
- DXProt::eph_del_regex($regex);
- $dxchan->$handle(@$pc);
- }
- }
- }
-}
-
-sub store_pcxx
-{
- my $self = shift;
- dbg("Investigate: Storing (". join(',', @_) . ")") if isdbg('investigate');
- push @{$self->{pcxx}}, [@_];
-}
-
-sub process
-{
- while (my ($k, $v) = each %list) {
- if ($v->{state} eq 'start') {
- my $via = $via{$v->{via}} || 0;
- if ($main::systime > $via+$pingint) {
- DXXml::Ping::add($main::me, $v->{call}, $v->{via});
- $v->{start} = $lastping = $main::systime;
- dbg("Investigate: ping sent to $v->{call} via $v->{via}") if isdbg('investigate');
- $v->chgstate('waitping');
- $via{$v->{via}} = $main::systime;
- }
- } elsif ($v->{state} eq 'waitping') {
- if ($main::systime > $v->{start} + $maxpingwait) {
- dbg("Investigate: ping timed out on $v->{call} via $v->{via}") if isdbg('investigate');
- delete $list{$k};
- my $user = DXUser->get_current($v->{via});
- if ($user) {
- $user->lastping($v->{via}, $main::systime);
- $user->put;
- }
- }
- }
- }
-}
-
-
-sub AUTOLOAD
-{
- no strict;
- my $name = $AUTOLOAD;
- return if $name =~ /::DESTROY$/;
- $name =~ s/^.*:://o;
-
- confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
-
- # this clever line of code creates a subroutine which takes over from autoload
- # from OO Perl - Conway
- *$AUTOLOAD = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}};
- goto &$AUTOLOAD;
-}
-1;