2 # Node routing routines
4 # Copyright (c) 2001 Dirk Koopman G1TLH
18 use vars qw($VERSION $BRANCH);
19 ($VERSION, $BRANCH) = dxver( q$Revision$);
21 use vars qw(%list %valid @ISA $max $filterdef $obscount);
25 parent => '0,Parent Calls,parray',
26 nodes => '0,Nodes,parray',
27 users => '0,Users,parray',
28 usercount => '0,User Count',
29 version => '0,Version',
30 handle_xml => '0,Using XML,yesno',
31 lastmsg => '0,Last Route Msg,atime',
32 lastid => '0,Last Route MsgID',
33 do_pc92 => '0,Uses pc92,yesno',
34 via_pc92 => '0,Came in via pc92,yesno',
35 obscount => '0,Obscount',
38 $filterdef = $Route::filterdef;
45 my $n = scalar (keys %list);
46 $max = $n if $n > $max;
57 # this routine handles the possible adding of an entry in the routing
58 # table. It will only add an entry if it is new. It may have all sorts of
59 # other side effects which may include fixing up other links.
61 # It will return a node object if (and only if) it is a completely new
62 # object with that callsign. The upper layers are expected to do something
65 # called as $parent->add(call, dxchan, version, flags)
72 confess "Route::add trying to add $call to myself" if $call eq $parent->{call};
73 my $self = get($call);
75 $self->_addparent($parent);
76 $parent->_addnode($self);
79 $self = $parent->new($call, @_);
80 $parent->_addnode($self);
85 # this routine is the opposite of 'add' above.
87 # It will return an object if (and only if) this 'del' will remove
88 # this object completely
96 # delete parent from this call's parent list
97 $pref->_delnode($self);
98 $self->_delparent($pref);
100 my $ncall = $self->{call};
102 # is this the last connection, I have no parents anymore?
103 unless (@{$self->{parent}}) {
104 foreach my $rcall (@{$self->{nodes}}) {
105 next if grep $rcall eq $_, @_;
106 my $r = Route::Node::get($rcall);
107 push @nodes, $r->del($self, $ncall, @_) if $r;
110 delete $list{$self->{call}};
120 foreach my $rcall (@{$parent->{nodes}}) {
122 push @out, $r->del($parent, $parent->{call}, @_) if $r;
130 for (@{$self->{users}}) {
131 my $ref = Route::User::get($_);
132 $ref->del($self) if $ref;
137 # add a user to this node
143 confess "Trying to add NULL User call to routing tables" unless $ucall;
145 my $uref = Route::User::get($ucall);
148 @out = $uref->addparent($self);
150 $uref = Route::User->new($ucall, $self->{call}, @_);
153 $self->_adduser($uref);
154 $self->{usercount} = scalar @{$self->{users}};
159 # delete a user from this node
167 @out = $self->_deluser($ref);
170 confess "tried to delete non-existant $ref->{call} from $self->{call}";
172 $self->{usercount} = scalar @{$self->{users}};
179 if (@_ && @{$self->{users}} == 0) {
180 $self->{usercount} = shift;
182 return $self->{usercount};
188 return @{$self->{users}};
194 return @{$self->{nodes}};
200 return @{$self->{parent}};
207 foreach my $call (@{$self->{nodes}}) {
208 next if grep $call eq $_, @_;
211 push @out, $r->rnodes($call, @_) if $r;
216 # this takes in a list of node and user calls (not references) from
217 # a config type update for a node and returns
218 # the differences as lists of things that have gone away
219 # and things that have been added.
220 sub calc_config_changes
223 my %nodes = map {$_ => 1} @{$self->{nodes}};
224 my %users = map {$_ => 1} @{$self->{users}};
227 my (@dnodes, @dusers, @nnodes, @nusers);
228 push @nnodes, map {my @r = $nodes{$_} ? () : $_; delete $nodes{$_}; @r} @$cnodes;
229 push @dnodes, keys %nodes;
230 push @nusers, map {my @r = $users{$_} ? () : $_; delete $users{$_}; @r} @$cusers;
231 push @dusers, keys %users;
232 return (\@dnodes, \@dusers, \@nnodes, \@nusers);
240 confess "already have $call in $pkg" if $list{$call};
242 my $self = $pkg->SUPER::new($call);
243 $self->{parent} = ref $pkg ? [ $pkg->{call} ] : [ ];
244 $self->{version} = shift || 5401;
245 $self->{flags} = shift || Route::here(1);
248 $self->{lastid} = {};
249 $self->reset_obs; # by definition
251 $list{$call} = $self;
259 $call = shift if ref $call;
260 my $ref = $list{uc $call};
261 dbg("Failed to get Node $call" ) if !$ref && isdbg('routerr');
273 return $self->_addlist('parent', @_);
279 return $self->_dellist('parent', @_);
286 return $self->_addlist('nodes', @_);
292 return $self->_dellist('nodes', @_);
299 return $self->_addlist('users', @_);
305 return $self->_dellist('users', @_);
317 $self->{obscount} = $obscount;
324 my $call = $self->{call} || "Unknown";
326 dbg("destroying $pkg with $call") if isdbg('routelow');
330 # generic AUTOLOAD for accessors
336 my $name = $AUTOLOAD;
337 return if $name =~ /::DESTROY$/;
340 confess "Non-existant field '$AUTOLOAD'" unless $valid{$name} || $Route::valid{$name};
342 # this clever line of code creates a subroutine which takes over from autoload
343 # from OO Perl - Conway
344 *$AUTOLOAD = sub {$_[0]->{$name} = $_[1] if @_ > 1; return $_[0]->{$name}};