2 # Node routing routines
4 # Copyright (c) 2001 Dirk Koopman G1TLH
18 use vars qw(%list %valid @ISA $max $filterdef $obscount);
22 parent => '0,Parent Calls,parray',
23 nodes => '0,Nodes,parray',
24 users => '0,Users,parray',
25 usercount => '0,User Count',
26 version => '0,Version',
28 handle_xml => '0,Using XML,yesno',
29 lastmsg => '0,Last Route Msg,atime',
30 lastid => '0,Last Route MsgID',
31 do_pc9x => '0,Uses pc9x,yesno',
32 via_pc92 => '0,Came in via pc92,yesno',
33 obscount => '0,Obscount',
34 last_PC92C => '9,Last PC92C',
37 $filterdef = $Route::filterdef;
44 my $n = scalar (keys %list);
45 $max = $n if $n > $max;
56 # this routine handles the possible adding of an entry in the routing
57 # table. It will only add an entry if it is new. It may have all sorts of
58 # other side effects which may include fixing up other links.
60 # It will return a node object if (and only if) it is a completely new
61 # object with that callsign. The upper layers are expected to do something
64 # called as $parent->add(call, dxchan, version, flags)
71 confess "Route::add trying to add $call to myself" if $call eq $parent->{call};
72 my $self = get($call);
74 $self->_addparent($parent);
75 $parent->_addnode($self);
78 $self = $parent->new($call, @_);
79 $parent->_addnode($self);
84 # this routine is the opposite of 'add' above.
86 # It will return an object if (and only if) this 'del' will remove
87 # this object completely
95 # delete parent from this call's parent list
96 $pref->_delnode($self);
97 $self->_delparent($pref);
99 my $ncall = $self->{call};
101 # is this the last connection, I have no parents anymore?
102 unless (@{$self->{parent}}) {
103 foreach my $rcall (@{$self->{nodes}}) {
104 next if grep $rcall eq $_, @_;
105 my $r = Route::Node::get($rcall);
106 push @nodes, $r->del($self, $ncall, @_) if $r;
109 delete $list{$self->{call}};
115 # this deletes this node completely by grabbing the parents
116 # and deleting me from them
123 foreach my $call (@{$self->{parent}}) {
124 my $parent = Route::Node::get($call);
125 push @out, $parent->del($self) if $parent;
134 foreach my $rcall (@{$parent->{nodes}}) {
136 push @out, $r->del($parent, $parent->{call}, @_) if $r;
144 for (@{$self->{users}}) {
145 my $ref = Route::User::get($_);
146 $ref->del($self) if $ref;
151 # add a user to this node
157 confess "Trying to add NULL User call to routing tables" unless $ucall;
159 my $uref = Route::User::get($ucall);
162 @out = $uref->addparent($self);
164 $uref = Route::User->new($ucall, $self->{call}, @_);
167 $self->_adduser($uref);
168 $self->{usercount} = scalar @{$self->{users}};
173 # delete a user from this node
181 @out = $self->_deluser($ref);
184 confess "tried to delete non-existant $ref->{call} from $self->{call}";
186 $self->{usercount} = scalar @{$self->{users}};
193 if (@_ && @{$self->{users}} == 0) {
194 $self->{usercount} = shift;
196 return $self->{usercount};
202 return @{$self->{users}};
208 return @{$self->{nodes}};
214 return @{$self->{parent}};
221 foreach my $call (@{$self->{nodes}}) {
222 next if grep $call eq $_, @_;
225 push @out, $r->rnodes($call, @_) if $r;
230 # this takes in a list of node and user calls (not references) from
231 # a config type update for a node and returns
232 # the differences as lists of things that have gone away
233 # and things that have been added.
234 sub calc_config_changes
237 my %nodes = map {$_ => 1} @{$self->{nodes}};
238 my %users = map {$_ => 1} @{$self->{users}};
241 if (isdbg('route')) {
242 dbg("ROUTE: start calc_config_changes");
243 dbg("ROUTE: incoming nodes on $self->{call}: " . join(',', sort @$cnodes));
244 dbg("ROUTE: incoming users on $self->{call}: " . join(',', sort @$cusers));
245 dbg("ROUTE: existing nodes on $self->{call}: " . join(',', sort keys %nodes));
246 dbg("ROUTE: existing users on $self->{call}: " . join(',', sort keys %users));
248 my (@dnodes, @dusers, @nnodes, @nusers);
249 push @nnodes, map {my @r = $nodes{$_} ? () : $_; delete $nodes{$_}; @r} @$cnodes;
250 push @dnodes, keys %nodes;
251 push @nusers, map {my @r = $users{$_} ? () : $_; delete $users{$_}; @r} @$cusers;
252 push @dusers, keys %users;
253 if (isdbg('route')) {
254 dbg("ROUTE: deleted nodes on $self->{call}: " . join(',', sort @dnodes));
255 dbg("ROUTE: deleted users on $self->{call}: " . join(',', sort @dusers));
256 dbg("ROUTE: added nodes on $self->{call}: " . join(',', sort @nnodes));
257 dbg("ROUTE: added users on $self->{call}: " . join(',', sort @nusers));
258 dbg("ROUTE: end calc_config_changes");
260 return (\@dnodes, \@dusers, \@nnodes, \@nusers);
268 confess "already have $call in $pkg" if $list{$call};
270 my $self = $pkg->SUPER::new($call);
271 $self->{parent} = ref $pkg ? [ $pkg->{call} ] : [ ];
272 $self->{version} = shift || 5401;
273 $self->{flags} = shift || Route::here(1);
276 $self->{lastid} = {};
277 $self->reset_obs; # by definition
279 $list{$call} = $self;
287 $call = shift if ref $call;
288 my $ref = $list{uc $call};
289 dbg("Failed to get Node $call" ) if !$ref && isdbg('routerr');
301 return $self->_addlist('parent', @_);
307 return $self->_dellist('parent', @_);
314 return $self->_addlist('nodes', @_);
320 return $self->_dellist('nodes', @_);
327 return $self->_addlist('users', @_);
333 return $self->_dellist('users', @_);
340 return $self->{obscount};
346 $self->{obscount} = $obscount;
353 my $call = $self->{call} || "Unknown";
355 dbg("destroying $pkg with $call") if isdbg('routelow');
359 # generic AUTOLOAD for accessors
365 my $name = $AUTOLOAD;
366 return if $name =~ /::DESTROY$/;
369 confess "Non-existant field '$AUTOLOAD'" unless $valid{$name} || $Route::valid{$name};
371 # this clever line of code creates a subroutine which takes over from autoload
372 # from OO Perl - Conway
373 *$AUTOLOAD = sub {$_[0]->{$name} = $_[1] if @_ > 1; return $_[0]->{$name}};