X-Git-Url: http://gb7djk.dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=perl%2FInvestigate.pm;fp=perl%2FInvestigate.pm;h=d59a57b5a1ba17f976d2fe47660366076510e400;hb=23d5848190b73200389fdfc2291e3453b3b91b15;hp=0000000000000000000000000000000000000000;hpb=65a4b5776154155cb012fe7968558d0449d74ef3;p=spider.git

diff --git a/perl/Investigate.pm b/perl/Investigate.pm
new file mode 100644
index 00000000..d59a57b5
--- /dev/null
+++ b/perl/Investigate.pm
@@ -0,0 +1,158 @@
+#
+# 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
+#
+# $Id$
+#
+
+use strict;
+
+package Investigate;
+
+use DXDebug;
+use DXUtil;
+
+
+use vars qw($VERSION $BRANCH);
+$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
+$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
+$main::build += $VERSION;
+$main::branch += $BRANCH;
+
+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',
+		 );
+
+
+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') {
+		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') {
+			if ($main::systime > $lastping+$pingint) {
+				DXProt::addping($main::mycall, $v->{call}, $v->{via});
+				$v->{start} = $lastping = $main::systime;
+				dbg("Investigate: ping sent to $v->{call} via $v->{via}") if isdbg('investigate');
+				$v->chgstate('waitping');
+			}
+		} elsif ($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;