changed lockfile name to .lck (from .lock) for M$

[spider.git] / perl / DXUser.pm

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

package DXUser;

use DXLog;
use DB_File;
use Data::Dumper;
use Fcntl;
use IO::File;
use DXDebug;

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

%u = ();
$dbm = undef;
$filename = undef;
$lastoperinterval = 30*24*60*60;
$lasttime = 0;

# 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,Accept DX Spots?,yesno', # accept his dx spots?
                  annok => '9,Accept 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',
                  wantwcy => '0,Rec WCY,yesno',
                  wantecho => '0,Rec Echo,yesno',
                  wanttalk => '0,Rec Talk,yesno',
                  wantwx => '0,Rec WX,yesno',
                  wantdx => '0,Rec DX Spots,yesno',
                  pagelth => '0,Current Pagelth',
                  pingint => '9,Node Ping interval',
                  nopings => '9,Ping Obs Count',
                  wantlogininfo => '9,Login info req,yesno',
                  wantgrid => '0,DX Grid Info,yesno',
                  lastoper => '9,Last for/oper,cldatetime',
                 );

no strict;
sub AUTOLOAD
{
        my $self = shift;
        my $name = $AUTOLOAD;
  
        return if $name =~ /::DESTROY$/;
        $name =~ s/.*:://o;
  
        confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
        # this clever line of code creates a subroutine which takes over from autoload
        # from OO Perl - Conway
        *{$AUTOLOAD} = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}} ;
        if (@_) {
                $self->{$name} = shift;
        }
        return $self->{$name};
}

use strict;

#
# 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;
}

sub del_file
{
        my ($pkg, $fn) = @_;
  
        confess "need a filename in User" if !$fn;
        $fn .= ".v2";
        unlink $fn;
}

#
# periodic processing
#
sub process
{
        if ($main::systime > $lasttime + 15) {
                $dbm->sync;
                $lasttime = $main::systime;
        }
}

#
# 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->put;
        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;
        my $data;
        unless ($dbm->get($call, $data)) {
                return decode($data);
        }
        return undef;
}

#
# 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;
  
        my $dxchan = DXChannel->get($call);
        return $dxchan->user if $dxchan;
        my $data;
        unless ($dbm->get($call, $data)) {
                return decode($data);
        }
        return undef;
}

#
# get all callsigns in the database 
#

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

#
# put - put a user
#

sub put
{
        my $self = shift;
        confess "Trying to put nothing!" unless $self && ref $self;
        my $call = $self->{call};
        # delete all instances of this 
#       for ($dbm->get_dup($call)) {
#               $dbm->del_dup($call, $_);
#       }
        $dbm->del($call);
        delete $self->{annok} if $self->{annok};
        delete $self->{dxok} if $self->{dxok};
        $dbm->put($call, $self->encode);
}

# 
# create a string from a user reference
#
sub encode
{
        my $self = shift;
        my $dd = new Data::Dumper([$self]);
        $dd->Indent(0);
        $dd->Terse(1);
    $dd->Quotekeys($] < 5.005 ? 1 : 0);
        return $dd->Dumpxs;
}

#
# create a hash from a string
#
sub decode
{
        my $s = shift;
        my $ref;
        eval '$ref = ' . $s;
        if ($@) {
                dbg('err', $@) if $@;
                Log('err', $@) if $@;
                $ref = undef;
        }
        return $ref;
}

#
# del - delete a user
#

sub del
{
        my $self = shift;
        my $call = $self->{call};
        # delete all instances of this 
#       for ($dbm->get_dup($call)) {
#               $dbm->del_dup($call, $_);
#       }
        $dbm->del($call);
}

#
# close - close down a user
#

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

#
# sync the database
#

sub sync
{
        $dbm->sync;
}

#
# return a list of valid elements 
# 

sub fields
{
        return keys(%valid);
}


#
# export the database to an ascii file
#

sub export
{
        my $fn = shift;
        
        # save old ones
        rename "$fn.oooo", "$fn.ooooo" if -e "$fn.oooo";
        rename "$fn.ooo", "$fn.oooo" if -e "$fn.ooo";
        rename "$fn.oo", "$fn.ooo" if -e "$fn.oo";
        rename "$fn.o", "$fn.oo" if -e "$fn.o";
        rename "$fn", "$fn.o" if -e "$fn";

        my $count = 0;
        my $fh = new IO::File ">$fn" or return "cannot open $fn ($!)";
        if ($fh) {
                my $ref = 0;
                my $key = 0;
                my $action;
                my $t = scalar localtime;
                print $fh q{#!/usr/bin/perl
#
# The exported userfile for a DXSpider System
#
# Input file: $filename
#       Time: $t
#
                        
package main;
                        
# search local then perl directories
BEGIN {
        umask 002;
                                
        # root of directory tree for this system
        $root = "/spider"; 
        $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
        
        unshift @INC, "$root/perl";     # this IS the right way round!
        unshift @INC, "$root/local";
        
        # try to detect a lockfile (this isn't atomic but 
        # should do for now
        $lockfn = "$root/perl/cluster.lck";       # lock file name
        if (-e $lockfn) {
                open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
                my $pid = <CLLOCK>;
                chomp $pid;
                die "Lockfile ($lockfn) and process $pid exists - cluster must be stopped first\n" if kill 0, $pid;
                close CLLOCK;
        }
}

package DXUser;

use DXVars;
use DXUser;

if (@ARGV) {
        $main::userfn = shift @ARGV;
        print "user filename now $userfn\n";
}

DXUser->del_file($main::userfn);
DXUser->init($main::userfn, 1);

%u = (
  };

        for ($action = R_FIRST; !$dbm->seq($key, $ref, $action); $action = R_NEXT) {
                        print $fh "'$key' => q{$ref},\n";
                        ++$count;
                } 
        print $fh ");\n#\nprint \"there were $count records\\n\";\n#\n";
        print $fh "DXUser->sync; DXUser->finish;\n#\n";
        $fh->close;
    } 
        return $count;
}

#
# 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 $val = shift;
        my $s = "want$n";
        $self->{$s} = $val if defined $val;
        return exists $self->{$s} ? $self->{$s} : 1;
}

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

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

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

sub wantwcy
{
        return _want('wcy', @_);
}

sub wantecho
{
        return _want('echo', @_);
}

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

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

sub wanttalk
{
        return _want('talk', @_);
}

sub wantgrid
{
        return _want('grid', @_);
}

sub wantlogininfo
{
        my $self = shift;
        my $n = shift;
        $self->{wantlogininfo} = $n if $n;
        return exists $self->{wantlogininfo} ? $self->{wantlogininfo} : 0;
}

sub is_node
{
        my $self = shift;
        return $self->{sort} =~ /[ACRSX]/;
}

sub is_user
{
        my $self = shift;
        return $self->{sort} eq 'U';
}

sub is_bbs
{
        my $self = shift;
        return $self->{sort} eq 'B';
}

sub is_spider
{
        my $self = shift;
        return $self->{sort} eq 'S';
}

sub is_clx
{
        my $self = shift;
        return $self->{sort} eq 'C';
}

sub is_dxnet
{
        my $self = shift;
        return $self->{sort} eq 'X';
}

sub is_arcluster
{
        my $self = shift;
        return $self->{sort} eq 'R';
}

sub is_ak1a
{
        my $self = shift;
        return $self->{sort} eq 'A';
}
1;
__END__