2 # Node routing routines
4 # Copyright (c) 2001 Dirk Koopman G1TLH
17 use vars qw(%list %valid @ISA $max $filterdef);
21 parent => '0,Parent Calls,parray',
22 nodes => '0,Nodes,parray',
23 users => '0,Users,parray',
24 usercount => '0,User Count',
25 version => '0,Version',
28 $filterdef = $Route::filterdef;
34 my $n = scalar (keys %list);
35 $max = $n if $n > $max;
45 # this routine handles the possible adding of an entry in the routing
46 # table. It will only add an entry if it is new. It may have all sorts of
47 # other side effects which may include fixing up other links.
49 # It will return a node object if (and only if) it is a completely new
50 # object with that callsign. The upper layers are expected to do something
53 # called as $parent->add(call, dxchan, version, flags)
60 confess "Route::add trying to add $call to myself" if $call eq $parent->{call};
61 my $self = get($call);
63 $self->_addparent($parent->{call});
64 $parent->_addnode($call);
67 $parent->_addnode($call);
68 $self = $parent->new($call, @_);
73 # this routine is the opposite of 'add' above.
75 # It will return an object if (and only if) this 'del' will remove
76 # this object completely
84 # delete parent from this call's parent list
85 my $pcall = $pref->{call};
86 my $ref = $self->_delparent($pcall);
89 # is this the last connection?
92 push @nodes, $self->del_nodes;
93 delete $list{$self->{call}};
103 for (@{$self->{users}}) {
104 my $ref = Route::User::get($_);
105 $ref->del($self) if $ref;
110 # remove all sub nodes from this parent
116 for (@{$self->{nodes}}) {
117 next if $self->{call} eq $_;
118 push @nodes, $self->del_node($_);
123 # delete a node from this node (ie I am a parent)
129 $self->_delnode($ncall);
130 if (my $ref = get($ncall)) {
131 foreach my $rcall (@{$ref->{nodes}}) {
132 next if $rcall eq $ncall || $rcall eq $self->{call};
133 push @out, $ref->del_node($rcall);
135 push @out, $ref->del($self);
140 # add a user to this node
145 $self->_adduser($ucall);
147 $self->{usercount} = scalar @{$self->{users}};
148 my $uref = Route::User::get($ucall);
149 my @out = (Route::User->new($ucall, $self->{call}, @_)) unless $uref;
153 # delete a user from this node
158 my $ref = Route::User::get($ucall);
159 $self->_deluser($ucall);
160 my @out = $ref->del($self) if $ref;
167 if (@_ && @{$self->{users}} == 0) {
168 $self->{usercount} = shift;
170 return $self->{usercount};
176 return @{$self->{users}};
182 return @{$self->{nodes}};
189 foreach my $call (@{$self->{nodes}}) {
190 next if grep $call eq $_, @_;
193 push @out, $r->rnodes(@_, @out) if $r;
204 confess "already have $call in $pkg" if $list{$call};
206 my $self = $pkg->SUPER::new($call);
207 $self->{parent} = ref $pkg ? [ $pkg->{call} ] : [ ];
208 $self->{version} = shift;
209 $self->{flags} = shift;
213 $list{$call} = $self;
221 $call = shift if ref $call;
222 my $ref = $list{uc $call};
223 dbg('routerr', "Failed to get Node $call" ) unless $ref;
235 return $self->_addlist('parent', @_);
241 return $self->_dellist('parent', @_);
248 return $self->_addlist('nodes', @_);
254 return $self->_dellist('nodes', @_);
261 return $self->_addlist('users', @_);
267 return $self->_dellist('users', @_);
274 my $call = $self->{call} || "Unknown";
276 dbg('route', "destroying $pkg with $call");
280 # generic AUTOLOAD for accessors
289 return if $name =~ /::DESTROY$/;
292 confess "Non-existant field '$AUTOLOAD'" unless $valid{$name} || $Route::valid{$name};
294 # this clever line of code creates a subroutine which takes over from autoload
295 # from OO Perl - Conway
296 # print "AUTOLOAD: $AUTOLOAD\n";
297 # *{$AUTOLOAD} = sub {my $self = shift; @_ ? $self->{$name} = shift : $self->{$name}} ;
298 @_ ? $self->{$name} = shift : $self->{$name} ;