]> www.dxcluster.org Git - spider.git/blob - perl/Investigate.pm
remove all $Id$ strings
[spider.git] / perl / Investigate.pm
1 #
2 # Investigate whether an external node is accessible
3 #
4 # If it is, make it believable otherwise mark as not
5 # to be believed. 
6 #
7 # It is possible to store up state for a node to be 
8 # investigated, so that if it is accessible, its details
9 # will be passed on to whomsoever might be interested.
10 #
11 # Copyright (c) 2004 Dirk Koopman, G1TLH
12 #
13 #
14 #
15
16 use strict;
17
18 package Investigate;
19
20 use DXDebug;
21 use DXUtil;
22
23
24 use vars qw (%list %valid $pingint $maxpingwait);
25
26 $pingint = 5;                                   # interval between pings for each investigation
27                                                                 # this is to stop floods of pings
28 $maxpingwait = 120;                             # the maximum time we will wait for a reply to a ping
29 my $lastping = 0;                               # last ping done
30 %list = ();                                             # the list of outstanding investigations
31 %valid = (                                              # valid fields
32                   call => '0,Callsign',
33                   start => '0,Started at,atime',
34                   version => '0,Node Version',
35                   build => '0,Node Build',
36                   here => '0,Here?,yesno',
37                   conf => '0,In Conf?,yesno',
38                   pingsent => '0,Time ping sent,atime',
39                   state => '0,State',
40                   via => '0,Via Node',
41                   pcxx => '0,Stored PCProt,parray',
42                  );
43
44 my %via = ();
45
46 sub new
47 {
48         my $pkg = shift;
49         my $call = shift;
50         my $via = shift;
51         
52         my $self = $list{"$via,$call"};
53         unless ($self) {
54                 $self = bless { 
55                                            call=>$call, 
56                                            via=>$via,
57                                            start=>$main::systime,
58                                            state=>'start',
59                                            pcxx=>[],
60                                           }, ref($pkg) || $pkg;
61                 $list{"$via,$call"} = $self; 
62         } 
63         dbg("Investigate: New $call via $via") if isdbg('investigate');
64         return $self;
65 }
66
67 sub get
68 {
69         return $list{"$_[1],$_[0]"};
70 }
71
72 sub chgstate
73 {
74         my $self = shift;
75         my $state = shift;
76         dbg("Investigate: $self->{call} via $self->{via} state $self->{state}->$state") if isdbg('investigate');
77         $self->{state} = $state;
78 }
79
80 sub handle_ping
81 {
82         my $self = shift;
83         dbg("Investigate: ping received for $self->{call} via $self->{via}") if isdbg('investigate');
84         if ($self->{state} eq 'waitping') {
85                 $via{$self->{via}} = 0;       # cue up next ping on this interface
86                 delete $list{"$self->{via},$self->{call}"};
87                 my $user = DXUser->get_current($self->{via});
88                 if ($user) {
89                         $user->set_believe($self->{call});
90                         $user->put;
91                 }
92                 my $dxchan = DXChannel::get($self->{via});
93                 if ($dxchan) {
94                         dbg("Investigate: sending PC19 for $self->{call}") if isdbg('investigate');
95                         foreach my $pc (@{$self->{pcxx}}) {
96                                 no strict 'refs';
97                                 my $handle = "handle_$pc->[0]";
98                                 dbg("Investigate: sending PC$pc->[0] (" . join(',', @$pc) . ")") if isdbg('investigate');
99                                 my $regex = $pc->[1];
100                                 $regex =~ s/\^/\\^/g;
101                                 DXProt::eph_del_regex($regex);
102                                 $dxchan->$handle(@$pc);
103                         }
104                 }
105         }
106 }
107
108 sub store_pcxx
109 {
110         my $self = shift;
111         dbg("Investigate: Storing (". join(',', @_) . ")") if isdbg('investigate');
112         push @{$self->{pcxx}}, [@_];
113 }
114
115 sub process
116 {
117         while (my ($k, $v) = each %list) {
118                 if ($v->{state} eq 'start') {
119                         my $via = $via{$v->{via}} || 0;
120                         if ($main::systime > $via+$pingint) {
121                                 DXXml::Ping::add($main::me, $v->{call}, $v->{via});
122                                 $v->{start} = $lastping = $main::systime;
123                                 dbg("Investigate: ping sent to $v->{call} via $v->{via}") if isdbg('investigate');
124                                 $v->chgstate('waitping');
125                                 $via{$v->{via}} = $main::systime;
126                         }
127                 } elsif ($v->{state} eq 'waitping') {
128                         if ($main::systime > $v->{start} + $maxpingwait) {
129                                 dbg("Investigate: ping timed out on $v->{call} via $v->{via}") if isdbg('investigate');
130                                 delete $list{$k};
131                                 my $user = DXUser->get_current($v->{via});
132                                 if ($user) {
133                                         $user->lastping($v->{via}, $main::systime);
134                                         $user->put;
135                                 }
136                         }
137                 }
138         }
139 }
140
141
142 sub AUTOLOAD
143 {
144         no strict;
145         my $name = $AUTOLOAD;
146         return if $name =~ /::DESTROY$/;
147         $name =~ s/^.*:://o;
148   
149         confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
150
151         # this clever line of code creates a subroutine which takes over from autoload
152         # from OO Perl - Conway
153         *$AUTOLOAD = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}};
154         goto &$AUTOLOAD;
155 }
156 1;