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[spider.git] / perl / DXUser.pm

#
# DX cluster user routines
#
# Copyright (c) 1998 - Dirk Koopman G1TLH
#
# $Id$
#

package DXUser;

require Exporter;
@ISA = qw(Exporter);

use DB_File;
use Fcntl;
use Carp;

use strict;
use vars qw(%u $dbm $filename %valid);

%u = ();
$dbm = undef;
$filename = undef;

# hash of valid elements and a simple prompt
%valid = (
                  call => '0,Callsign',
                  alias => '0,Real Callsign',
                  name => '0,Name',
                  qth => '0,Home QTH',
                  lat => '0,Latitude,slat',
                  long => '0,Longitude,slong',
                  qra => '0,Locator',
                  email => '0,E-mail Address',
                  priv => '9,Privilege Level',
                  lastin => '0,Last Time in,cldatetime',
                  passwd => '9,Password',
                  addr => '0,Full Address',
                  'sort' => '0,Type of User', # A - ak1a, U - User, S - spider cluster, B - BBS
                  xpert => '0,Expert Status,yesno',
                  bbs => '0,Home BBS',
                  node => '0,Last Node',
                  homenode => '0,Home Node',
                  lockout => '9,Locked out?,yesno',     # won't let them in at all
                  dxok => '9,DX Spots?,yesno', # accept his dx spots?
                  annok => '9,Announces?,yesno', # accept his announces?
                  reg => '0,Registered?,yesno', # is this user registered?
                  lang => '0,Language',
                  hmsgno => '0,Highest Msgno',
                  group => '0,Access Group,parray',     # used to create a group of users/nodes for some purpose or other
                  isolate => '9,Isolate network,yesno',
                  wantbeep => '0,Rec Beep,yesno',
                  wantann => '0,Rec Announce,yesno',
                  wantwwv => '0,Rec WWV,yesno',
                  wanttalk => '0,Rec Talk,yesno',
                  wantwx => '0,Rec WX,yesno',
                  wantdx => '0,Rec DX Spots,yesno',
                 );

no strict;
sub AUTOLOAD
{
        my $self = shift;
        my $name = $AUTOLOAD;
  
        return if $name =~ /::DESTROY$/;
        $name =~ s/.*:://o;
  
        confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
        if (@_) {
                $self->{$name} = shift;
        }
        return $self->{$name};
}

#
# initialise the system
#
sub init
{
        my ($pkg, $fn, $mode) = @_;
  
        confess "need a filename in User" if !$fn;
        $fn .= ".v2";
        if ($mode) {
                $dbm = tie (%u, 'DB_File', $fn, O_CREAT|O_RDWR, 0666, $DB_BTREE) or confess "can't open user file: $fn ($!)";
        } else {
                $dbm = tie (%u, 'DB_File', $fn, O_RDONLY, 0666, $DB_BTREE) or confess "can't open user file: $fn ($!)";
        }
        
        $filename = $fn;
}

use strict;

#
# close the system
#

sub finish
{
        undef $dbm;
        untie %u;
}

#
# new - create a new user
#

sub new
{
        my $pkg = shift;
        my $call = uc shift;
        #  $call =~ s/-\d+$//o;
  
        confess "can't create existing call $call in User\n!" if $u{$call};

        my $self = bless {}, $pkg;
        $self->{call} = $call;
        $self->{'sort'} = 'U';
        $self->{dxok} = 1;
        $self->{annok} = 1;
        $self->{lang} = $main::lang;
        $u{call} = $self->encode();
        return $self;
}

#
# get - get an existing user - this seems to return a different reference everytime it is
#       called - see below
#

sub get
{
        my $pkg = shift;
        my $call = uc shift;
        #  $call =~ s/-\d+$//o;       # strip ssid
        my $s = $u{$call};
        return $s ?  decode($s) : undef;
}

#
# get all callsigns in the database 
#

sub get_all_calls
{
        return (sort keys %u);
}

#
# get an existing either from the channel (if there is one) or from the database
#
# It is important to note that if you have done a get (for the channel say) and you
# want access or modify that you must use this call (and you must NOT use get's all
# over the place willy nilly!)
#

sub get_current
{
        my $pkg = shift;
        my $call = uc shift;
        #  $call =~ s/-\d+$//o;       # strip ssid
  
        my $dxchan = DXChannel->get($call);
        return $dxchan->user if $dxchan;
        my $s = $u{$call};
        return $s ? decode($s) : undef;
}

#
# put - put a user
#

sub put
{
        my $self = shift;
        my $call = $self->{call};
        $u{$call} = $self->encode();
}

# 
# create a string from a user reference
#
sub encode
{
        my $self = shift;
        my $out;
        my $f;

        $out = "bless( { ";
        for $f (sort keys %$self) {
                my $val = $$self{$f};
            if (ref $val) {          # it's an array (we think)
                        $out .= "'$f'=>[ ";
                        foreach (@$val) {
                                my $s = $_;
                                $out .= "'$s',";
                        }
                        $out .= " ],";
            } else {
                        $val =~ s/'/\\'/og;
                        $val =~ s/\@/\\@/og;
                        $out .= "'$f'=>q{$val},";
                }
        }
        $out .= " }, 'DXUser')";
        return $out;
}

#
# create a hash from a string
#
sub decode
{
        my $s = shift;
        my $ref;
        $s = '$ref = ' . $s;
        eval $s;
        confess $@ if $@;
        return $ref;
}

#
# del - delete a user
#

sub del
{
        my $self = shift;
        my $call = $self->{call};
        delete $u{$call};
}

#
# close - close down a user
#

sub close
{
        my $self = shift;
        $self->{lastin} = time;
        $self->put();
}

#
# return a list of valid elements 
# 

sub fields
{
        return keys(%valid);
}

#
# group handling
#

# add one or more groups
sub add_group
{
        my $self = shift;
        my $ref = $self->{group} || [ 'local' ];
        $self->{group} = $ref if !$self->{group};
        push @$ref, @_ if @_;
}

# remove one or more groups
sub del_group
{
        my $self = shift;
        my $ref = $self->{group} || [ 'local' ];
        my @in = @_;
        
        $self->{group} = $ref if !$self->{group};
        
        @$ref = map { my $a = $_; return (grep { $_ eq $a } @in) ? () : $a } @$ref;
}

# does this thing contain all the groups listed?
sub union
{
        my $self = shift;
        my $ref = $self->{group};
        my $n;
        
        return 0 if !$ref || @_ == 0;
        return 1 if @$ref == 0 && @_ == 0;
        for ($n = 0; $n < @_; ) {
                for (@$ref) {
                        my $a = $_;
                        $n++ if grep $_ eq $a, @_; 
                }
        }
        return $n >= @_;
}

# simplified group test just for one group
sub in_group
{
        my $self = shift;
        my $s = shift;
        my $ref = $self->{group};
        
        return 0 if !$ref;
        return grep $_ eq $s, $ref;
}

# set up a default group (only happens for them's that connect direct)
sub new_group
{
        my $self = shift;
        $self->{group} = [ 'local' ];
}

#
# return a prompt for a field
#

sub field_prompt
{ 
        my ($self, $ele) = @_;
        return $valid{$ele};
}

# some variable accessors
sub sort
{
        my $self = shift;
        @_ ? $self->{'sort'} = shift : $self->{'sort'} ;
}

# some accessors
sub _want
{
        my $n = shift;
        my $self = shift;
        my $s = "want$n";
        return $self->{$n} = shift if @_;
        return defined $self->{$n} ? $self->{$n} : 1;
}

sub wantbeep
{
        return _want('beep', @_);
}

sub wantann
{
        return _want('ann', @_);
}

sub wantwwv
{
        return _want('wwv', @_);
}

sub wantwx
{
        return _want('wx', @_);
}

sub wantdx
{
        return _want('dx', @_);
}

1;
__END__