path: root/LedgerSMB/User.pm

#=====================================================================
# LedgerSMB 
# Small Medium Business Accounting software
# http://www.ledgersmb.org/
# 
# Copyright (C) 2006
# This work contains copyrighted information from a number of sources all used
# with permission.
#
# This file contains source code included with or based on SQL-Ledger which
# is Copyright Dieter Simader and DWS Systems Inc. 2000-2005 and licensed
# under the GNU General Public License version 2 or, at your option, any later
# version.  For a full list including contact information of contributors,
# maintainers, and copyright holders, see the CONTRIBUTORS file.
#
# Original Copyright Notice from SQL-Ledger 2.6.17 (before the fork):
# Copyright (C) 2000
#
#  Author: DWS Systems Inc.
#     Web: http://www.sql-ledger.org
# 
#  Contributors: Jim Rawlings <jim@your-dba.com>
#
#======================================================================
#
# This file has NOT undergone whitespace cleanup.
#
#======================================================================
#
# user related functions
#
#=====================================================================

package User;
use LedgerSMB::Sysconfig;


sub new {
  my ($type, $memfile, $login) = @_;
  my $self = {};

  if ($login ne "") {
    &error("", "$memfile locked!") if (-f "${memfile}.LCK");
    
    open(MEMBER, "$memfile") or &error("", "$memfile : $!");
    
    while (<MEMBER>) {
      if (/^\[$login\]/) {
    while (<MEMBER>) {
      last if /^\[/;
      next if /^(#|\s)/;
      
      # remove comments
      s/^\s*#.*//g;

      # remove any trailing whitespace
      s/^\s*(.*?)\s*$/$1/;

      ($key, $value) = split /=/, $_, 2;
      
      $self->{$key} = $value;
    }
    
    $self->{login} = $login;

    last;
      }
    }
    close MEMBER;
  }
  
  bless $self, $type;
}


sub country_codes {
    use Locale::Country;
    use Locale::Language;

    my %cc = ();
    
    # scan the locale directory and read in the LANGUAGE files
    opendir DIR, "${LedgerSMB::Sysconfig::localepath}";

    my @dir = grep !/(^\.\.?$|\..*)/, readdir DIR;

    foreach my $dir (@dir) {
        $cc{$dir} = code2language(substr($dir, 0, 2));
        $cc{$dir} .= ("/" . code2country(substr($dir, 3, 2)))
            if length($dir) > 2;
        $cc{$dir} .= (" " . substr($dir, 6)) if length($dir) > 5;
    }

    closedir(DIR);

    %cc;

}


sub login {
  my ($self, $form) = @_;

  my $rc = -1;
  
  if ($self->{login} ne "") {

    if ($self->{password} ne "") {
      my $password = crypt $form->{password}, substr($self->{login}, 0, 2);
      if ($self->{password} ne $password) {
    return -1;
      }
    }
    
    #there shouldn't be any harm in always doing this. It might even un-bork things.
    $self->create_config("${LedgerSMB::Sysconfig::userspath}/$self->{login}.conf");
    
    do "${LedgerSMB::Sysconfig::userspath}/$self->{login}.conf";
    $myconfig{dbpasswd} = unpack 'u', $myconfig{dbpasswd};
  
    # check if database is down
    my $dbh = DBI->connect($myconfig{dbconnect}, $myconfig{dbuser}, $myconfig{dbpasswd}) or $self->error($DBI::errstr);

    # we got a connection, check the version
    my $query = qq|SELECT version FROM defaults|;
    my $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    my ($dbversion) = $sth->fetchrow_array;
    $sth->finish;

    # add login to employee table if it does not exist
    # no error check for employee table, ignore if it does not exist
    my $login = $self->{login};
    $login =~ s/@.*//;
    $query = qq|SELECT id FROM employee WHERE login = '$login'|;
    $sth = $dbh->prepare($query);
    $sth->execute;

    my ($id) = $sth->fetchrow_array;
    $sth->finish;

    if (! $id) {
      my ($employeenumber) = $form->update_defaults(\%myconfig, "employeenumber", $dbh);
      
      $query = qq|INSERT INTO employee (login, employeenumber, name, workphone,
                  role)
                  VALUES ('$login', '$employeenumber', '$myconfig{name}',
          '$myconfig{tel}', '$myconfig{role}')|;
      $dbh->do($query);
    }
    $dbh->disconnect;

    $rc = 0;

    
    if ($form->{dbversion} ne $dbversion) {
      $rc = -3;
      $dbupdate = (calc_version($dbversion) < calc_version($form->{dbversion}));
    }

    if ($dbupdate) {
      $rc = -4;

      # if DB2 bale out
      if ($myconfig{dbdriver} eq 'DB2') {
    $rc = -2;
      }
    }
  }

  $rc;
  
}


sub check_recurring {
  my ($self, $form) = @_;

  $self->{dbpasswd} = unpack 'u', $self->{dbpasswd};

  my $dbh = DBI->connect($self->{dbconnect}, $self->{dbuser}, $self->{dbpasswd}) or $form->dberror;

  my $query = qq|SELECT count(*) FROM recurring
                 WHERE enddate >= current_date AND nextdate <= current_date|;
  ($_) = $dbh->selectrow_array($query);
  
  $dbh->disconnect;

  $_;

}


sub dbconnect_vars {
  my ($form, $db) = @_;
  
  my %dboptions = (
     'Pg' => {
        'yy-mm-dd' => 'set DateStyle to \'ISO\'',
    'mm/dd/yy' => 'set DateStyle to \'SQL, US\'',
    'mm-dd-yy' => 'set DateStyle to \'POSTGRES, US\'',
    'dd/mm/yy' => 'set DateStyle to \'SQL, EUROPEAN\'',
    'dd-mm-yy' => 'set DateStyle to \'POSTGRES, EUROPEAN\'',
    'dd.mm.yy' => 'set DateStyle to \'GERMAN\''
         },
     'Oracle' => {
    'yy-mm-dd' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'YY-MM-DD\'',
    'mm/dd/yy' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'MM/DD/YY\'',
    'mm-dd-yy' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'MM-DD-YY\'',
    'dd/mm/yy' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'DD/MM/YY\'',
    'dd-mm-yy' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'DD-MM-YY\'',
    'dd.mm.yy' => 'ALTER SESSION SET NLS_DATE_FORMAT = \'DD.MM.YY\'',
             }
     );


  $form->{dboptions} = $dboptions{$form->{dbdriver}}{$form->{dateformat}};

  if ($form->{dbdriver} =~ /Pg/) {
    $form->{dbconnect} = "dbi:$form->{dbdriver}:dbname=$db";
  }

  if ($form->{dbdriver} eq 'Oracle') {
    $form->{dbconnect} = "dbi:Oracle:sid=$form->{sid}";
  }

  if ($form->{dbhost}) {
    $form->{dbconnect} .= ";host=$form->{dbhost}";
  }
  if ($form->{dbport}) {
    $form->{dbconnect} .= ";port=$form->{dbport}";
  }
  
}


sub dbdrivers {

  my @drivers = DBI->available_drivers();

#  return (grep { /(Pg|Oracle|DB2)/ } @drivers);
  return (grep { /Pg$/ } @drivers);

}


sub dbsources {
  my ($self, $form) = @_;

  my @dbsources = ();
  my ($sth, $query);
  
  $form->{dbdefault} = $form->{dbuser} unless $form->{dbdefault};
  $form->{sid} = $form->{dbdefault};
  &dbconnect_vars($form, $form->{dbdefault});

  my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;


  if ($form->{dbdriver} eq 'Pg') {

    $query = qq|SELECT datname FROM pg_database|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);
    
    while (my ($db) = $sth->fetchrow_array) {

      if ($form->{only_acc_db}) {
    
    next if ($db =~ /^template/);

    &dbconnect_vars($form, $db);
    my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;

    $query = qq|SELECT tablename FROM pg_tables
            WHERE tablename = 'defaults'
            AND tableowner = '$form->{dbuser}'|;
    my $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    if ($sth->fetchrow_array) {
      push @dbsources, $db;
    }
    $sth->finish;
    $dbh->disconnect;
    next;
      }
      push @dbsources, $db;
    }
  }

  $sth->finish;
  $dbh->disconnect;
  
  return @dbsources;

}


sub dbcreate {
  my ($self, $form) = @_;

  my %dbcreate = ( 'Pg' => qq|CREATE DATABASE "$form->{db}"| );

  $dbcreate{Pg} .= " WITH ENCODING = '$form->{encoding}'" if $form->{encoding};
  
  $form->{sid} = $form->{dbdefault};
  &dbconnect_vars($form, $form->{dbdefault});
  # The below line connects to Template1 or another template file in order
  # to create the db.  One must disconnect and reconnect later.
  if ($form->{dbsuperuser}){
    my $superdbh = DBI->connect(
    $form->{dbconnect}, 
    $form->{dbsuperuser}, 
    $form->{dbsuperpasswd}
    ) or $form->dberror;
    my $query = qq|$dbcreate{$form->{dbdriver}}|;
    $superdbh->do($query) || $form->dberror($query);
    
    $superdbh->disconnect;  
  }
  #Reassign for the work below

  &dbconnect_vars($form, $form->{db});
  
  my $dbh = DBI->connect(
    $form->{dbconnect}, 
    $form->{dbuser}, 
    $form->{dbpasswd}
  ) or $form->dberror;
  if ($form->{dbsuperuser}){
    my $superdbh = DBI->connect(
    $form->{dbconnect}, 
    $form->{dbsuperuser}, 
    $form->{dbsuperpasswd}
    ) or $form->dberror;
  # JD: We need to check for plpgsql, if it isn't there create it, if we can't error
  # Good chance I will have to do this twice as I get used to the way the code is
  # structured

    my %langcreate = ( 'Pg' => qq|CREATE LANGUAGE plpgsql|);
    my $query = qq|$langcreate{$form->{dbdriver}}|;
    $superdbh->do($query);
    $superdbh->disconnect;
  }
  # create the tables
  my $dbdriver = ($form->{dbdriver} =~ /Pg/) ? 'Pg' : $form->{dbdriver};
  
  my $filename = qq|sql/${dbdriver}-tables.sql|;
  $self->process_query($form, $dbh, $filename);
  
  # create functions
  $filename = qq|sql/${dbdriver}-functions.sql|;
  $self->process_query($form, $dbh, $filename);

  # load gifi
  ($filename) = split /_/, $form->{chart};
  $filename =~ s/_//;
  $self->process_query($form, $dbh, "sql/${filename}-gifi.sql");
 
  # load chart of accounts
  $filename = qq|sql/$form->{chart}-chart.sql|;
  $self->process_query($form, $dbh, $filename);

  # create indices
  $filename = qq|sql/${dbdriver}-indices.sql|;
  $self->process_query($form, $dbh, $filename);
 
  # create custom tables and functions
  my $item;
  foreach $item (qw(tables functions)) {
    $filename = "sql/${dbdriver}-custom_${item}.sql";
    if (-f "$filename") {
      $self->process_query($form, $dbh, $filename);
    }
  }
  
  $dbh->disconnect;

}



sub process_query {
  my ($self, $form, $dbh, $filename) = @_;
  
  return unless (-f $filename);
  
  open(FH, "$filename") or $form->error("$filename : $!\n");
  my $query = "";
  my $loop = 0;
  my $sth;
  

  while (<FH>) {

    if ($loop && /^--\s*end\s*(procedure|function|trigger)/i) {
      $loop = 0;

      $sth = $dbh->prepare($query);
      $sth->execute || $form->dberror($query);
      $sth->finish;
      
      $query = "";
      next;
    }
    
    if ($loop || /^create *(or replace)? *(procedure|function|trigger)/i) {
      $loop = 1;
      next if /^(--.*|\s+)$/;

      $query .= $_;
      next;
    }
    
    # don't add comments or empty lines
    next if /^(--.*|\s+)$/;
    
    # anything else, add to query
    $query .= $_;
     
    if (/;\s*$/) {
      # strip ;... Oracle doesn't like it
      $query =~ s/;\s*$//;
      $query =~ s/\\'/''/g;

      $sth = $dbh->prepare($query);
      $sth->execute || $form->dberror($query);
      $sth->finish;

      $query = "";
    }

  }
  close FH;
 
}
  


sub dbdelete {
  my ($self, $form) = @_;

  my %dbdelete = ( 'Pg' => qq|DROP DATABASE "$form->{db}"|,
               'Oracle' => qq|DROP USER $form->{db} CASCADE|
             );
  
  $form->{sid} = $form->{dbdefault};
  &dbconnect_vars($form, $form->{dbdefault});
  my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;
  my $query = qq|$dbdelete{$form->{dbdriver}}|;
  $dbh->do($query) || $form->dberror($query);

  $dbh->disconnect;

}
  


sub dbsources_unused {
  my ($self, $form, $memfile) = @_;

  my @dbexcl = ();
  my @dbsources = ();
  
  $form->error("$memfile locked!") if (-f "${memfile}.LCK");
  
  # open members file
  open(FH, "$memfile") or $form->error("$memfile : $!");

  while (<FH>) {
    if (/^dbname=/) {
      my ($null,$item) = split /=/;
      push @dbexcl, $item;
    }
  }

  close FH;

  $form->{only_acc_db} = 1;
  my @db = &dbsources("", $form);

  push @dbexcl, $form->{dbdefault};

  foreach $item (@db) {
    unless (grep /$item$/, @dbexcl) {
      push @dbsources, $item;
    }
  }

  return @dbsources;

}


sub dbneedsupdate {
  my ($self, $form) = @_;

  my %dbsources = ();
  my $query;
  
  $form->{sid} = $form->{dbdefault};
  &dbconnect_vars($form, $form->{dbdefault});

  my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;

  if ($form->{dbdriver} =~ /Pg/) {

    $query = qq|SELECT d.datname FROM pg_database d, pg_user u
                WHERE d.datdba = u.usesysid
        AND u.usename = '$form->{dbuser}'|;
    my $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);
    
    while (my ($db) = $sth->fetchrow_array) {

      next if ($db =~ /^template/);

      &dbconnect_vars($form, $db);
      
      my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;

      $query = qq|SELECT tablename FROM pg_tables
          WHERE tablename = 'defaults'|;
      my $sth = $dbh->prepare($query);
      $sth->execute || $form->dberror($query);

      if ($sth->fetchrow_array) {
    $query = qq|SELECT version FROM defaults|;
    my $sth = $dbh->prepare($query);
    $sth->execute;
    
    if (my ($version) = $sth->fetchrow_array) {
      $dbsources{$db} = $version;
    }
    $sth->finish;
      }
      $sth->finish;
      $dbh->disconnect;
    }
    $sth->finish;
  }


  if ($form->{dbdriver} eq 'Oracle') {
    $query = qq|SELECT owner FROM dba_objects
        WHERE object_name = 'DEFAULTS'
        AND object_type = 'TABLE'|;

    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    while (my ($db) = $sth->fetchrow_array) {
      
      $form->{dbuser} = $db;
      &dbconnect_vars($form, $db);
      
      my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;

      $query = qq|SELECT version FROM defaults|;
      my $sth = $dbh->prepare($query);
      $sth->execute;
      
      if (my ($version) = $sth->fetchrow_array) {
    $dbsources{$db} = $version;
      }
      $sth->finish;
      $dbh->disconnect;
    }
    $sth->finish;
  }


# JJR
  if ($form->{dbdriver} eq 'DB2') {
    $query = qq|SELECT tabschema FROM syscat.tables WHERE tabname = 'DEFAULTS'|;

    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    while (my ($db) = $sth->fetchrow_array) {

      &dbconnect_vars($form, $db);

      my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}) or $form->dberror;

      $query = qq|SELECT version FROM defaults|;
      my $sth = $dbh->prepare($query);
      $sth->execute;

      if (my ($version) = $sth->fetchrow_array) {
    $dbsources{$db} = $version;
      }
      $sth->finish;
      $dbh->disconnect;
    }
    $sth->finish;
  }
# End JJR
  
# code for DB2 is not used, keep for future reference
# DS, Oct. 28, 2003
  
  $dbh->disconnect;
  
  %dbsources;

}


sub dbupdate {
  my ($self, $form) = @_;

  $form->{sid} = $form->{dbdefault};
  
  my @upgradescripts = ();
  my $query;
  my $rc = -2;
  
  if ($form->{dbupdate}) {
    # read update scripts into memory
    opendir SQLDIR, "sql/." or $form->error($!);
    @upgradescripts = sort script_version grep /$form->{dbdriver}-upgrade-.*?\.sql$/, readdir SQLDIR;
    closedir SQLDIR;
  }


  foreach my $db (split / /, $form->{dbupdate}) {

    next unless $form->{$db};

    # strip db from dataset
    $db =~ s/^db//;
    &dbconnect_vars($form, $db);
    
    my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}, {AutoCommit => 0}) or $form->dberror;

    # check version
    $query = qq|SELECT version FROM defaults|;
    my $sth = $dbh->prepare($query);
    # no error check, let it fall through
    $sth->execute;

    my $version = $sth->fetchrow_array;
    $sth->finish;
    
    next unless $version;

    $version = calc_version($version);
    my $dbversion = calc_version($form->{dbversion});

    foreach my $upgradescript (@upgradescripts) {
      my $a = $upgradescript;
      $a =~ s/(^$form->{dbdriver}-upgrade-|\.sql$)//g;
      
      my ($mindb, $maxdb) = split /-/, $a;
      $mindb = calc_version($mindb);
      $maxdb = calc_version($maxdb);

      next if ($version >= $maxdb);

      # exit if there is no upgrade script or version == mindb
      last if ($version < $mindb || $version >= $dbversion);

      # apply upgrade
      $self->process_query($form, $dbh, "sql/$upgradescript");
      $dbh->commit;
      $version = $maxdb;
 
    }
    
    $rc = 0;
    $dbh->disconnect;
    
  }

  $rc;

}
  

sub calc_version {
  
  my @v = split /\./, $_[0];
  my $version = 0;
  my $i;
  
  for ($i = 0; $i <= $#v; $i++) {
    $version *= 1000;
    $version += $v[$i];
  }

  return $version;
  
}

  
sub script_version {
  my ($my_a, $my_b) = ($a, $b);
  
  my ($a_from, $a_to, $b_from, $b_to);
  my ($res_a, $res_b, $i);

  $my_a =~ s/.*-upgrade-//;
  $my_a =~ s/.sql$//;
  $my_b =~ s/.*-upgrade-//;
  $my_b =~ s/.sql$//;
  ($a_from, $a_to) = split(/-/, $my_a);
  ($b_from, $b_to) = split(/-/, $my_b);

  $res_a = calc_version($a_from);
  $res_b = calc_version($b_from);

  if ($res_a == $res_b) {
    $res_a = calc_version($a_to);
    $res_b = calc_version($b_to);
  }

  return $res_a <=> $res_b;
  
}


sub create_config {
  my ($self, $filename) = @_;


  @config = &config_vars;

  open(CONF, ">$filename") or $self->error("$filename : $!");
  
  # create the config file
  print CONF qq|# configuration file for $self->{login}

\%myconfig = (
|;

  foreach $key (sort @config) {
    $self->{$key} =~ s/\\/\\\\/g;
    $self->{$key} =~ s/'/\\'/g;
    #remaining conversion from SL
    $self->{$key} =~ s/sql-ledger([^.]*)\.css/ledger-smb$1.css/g;
    print CONF qq|  $key => '$self->{$key}',\n|;
  }

   
  print CONF qq|);\n\n|;

  close CONF;

}


sub save_member {
    my ($self) = @_;

    # format dbconnect and dboptions string
    &dbconnect_vars($self, $self->{dbname});

    $self->error("${LedgerSMB::Sysconfig::memberfile} locked!") 
        if (-f "${LedgerSMB::Sysconfig::memberfile}.LCK");
    open(FH, ">${LedgerSMB::Sysconfig::memberfile}.LCK") 
        or $self->error("${LedgerSMB::Sysconfig::memberfile}.LCK : $!");
    close(FH);

    if (! open(CONF, "+<${LedgerSMB::Sysconfig::memberfile}")) {
        unlink "${LedgerSMB::Sysconfig::memberfile}.LCK";
        $self->error("${LedgerSMB::Sysconfig::memberfile} : $!");
    }

    @config = <CONF>;

    seek(CONF, 0, 0);
    truncate(CONF, 0);

    while ($line = shift @config) {
        last if ($line =~ /^\[$self->{login}\]/);
        #remaining conversion from SL
        $line =~ s/sql-ledger([^.]*)\.css/ledger-smb$1.css/g;
        print CONF $line;
    }

    # remove everything up to next login or EOF
    while ($line = shift @config) {
        last if ($line =~ /^\[/);
    }

    # this one is either the next login or EOF
    print CONF $line;

    while ($line = shift @config) {
        print CONF $line;
    }

    print CONF qq|[$self->{login}]\n|;

    if ($self->{packpw}) {
        $self->{dbpasswd} = pack 'u', $self->{dbpasswd};
        chop $self->{dbpasswd};
    }
    if ($self->{password} ne $self->{old_password}) {
        $self->{password} = crypt $self->{password}, substr($self->{login}, 0, 2) if $self->{password};
    }

    if ($self->{'root login'}) {
        @config = qw(password);
    } else {
        @config = &config_vars;
    }

    # replace \r\n with \n
    for (qw(address signature)) { $self->{$_} =~ s/\r?\n/\\n/g }

    for (sort @config) {
        print CONF qq|$_=$self->{$_}\n| 
    }

    print CONF "\n";
    close CONF;
    unlink "${LedgerSMB::Sysconfig::memberfile}.LCK";
    # create conf file
    if (! $self->{'root login'}) {

        $self->create_config("${LedgerSMB::Sysconfig::userspath}/$self->{login}.conf");

        $self->{dbpasswd} =~ s/\\'/'/g;
        $self->{dbpasswd} =~ s/\\\\/\\/g;
        $self->{dbpasswd} = unpack 'u', $self->{dbpasswd};

        # check if login is in database
        my $dbh = DBI->connect($self->{dbconnect}, $self->{dbuser}, $self->{dbpasswd}, {AutoCommit => 0}) or $self->error($DBI::errstr);

        # add login to employee table if it does not exist
        my $login = $self->{login};
        $login =~ s/@.*//;
        my $query = qq|SELECT id FROM employee WHERE login = '$login'|;
        my $sth = $dbh->prepare($query);
        $sth->execute;

        my ($id) = $sth->fetchrow_array;
        $sth->finish;
        if ($id) {

            $query = qq|UPDATE employee SET
            role = '$self->{role}',
            email = '$self->{email}',
            name = '$self->{name}'
            WHERE login = '$login'|;

        } else {

            my ($employeenumber) = Form::update_defaults("", \%$self, "employeenumber", $dbh);
            $query = qq|INSERT INTO employee (login, employeenumber, name, workphone, role, email, sales)
                        VALUES ('$login', '$employeenumber', '$self->{name}',
                                '$self->{tel}', '$self->{role}', '$self->{email}', '1')|;
        }

        $dbh->do($query);
        $dbh->commit;
        $dbh->disconnect;

    }

}


sub delete_login {
  my ($self, $form) = @_;

  my $dbh = DBI->connect($form->{dbconnect}, $form->{dbuser}, $form->{dbpasswd}, {AutoCommit} => 0) or $form->dberror;
  
  my $login = $form->{login};
  $login =~ s/@.*//;
  my $query = qq|SELECT id FROM employee
                 WHERE login = '$login'|; 
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);
  
  my ($id) = $sth->fetchrow_array;
  $sth->finish;
    
  my $query = qq|UPDATE employee SET
         login = NULL,
         enddate = current_date
         WHERE login = '$login'|;
  $dbh->do($query);
 
  $dbh->commit;
  $dbh->disconnect;

}


sub config_vars {
  
  my @conf = qw(acs address businessnumber company countrycode
             currency dateformat dbconnect dbdriver dbhost dbname dboptions
         dbpasswd dbport dbuser email fax menuwidth name numberformat
         password printer role sid signature stylesheet tel
         templates timeout vclimit);

  @conf;

}


sub error {
  my ($self, $msg) = @_;

  if ($ENV{HTTP_USER_AGENT}) {
    print qq|Content-Type: text/html

<body bgcolor=ffffff>

<h2><font color=red>Error!</font></h2>
<p><b>$msg</b>|;

  }
  
  die "Error: $msg\n";
  
}


1;