<?php

// Editor component for company records
$editor = new Editor(translate('Principal'), 'dav_principal');

$editor->SetLookup( 'date_format_type', "SELECT 'E', 'European' UNION SELECT 'U', 'US Format' UNION SELECT 'I', 'ISO Format'" );
$editor->SetLookup( 'type_id', 'SELECT principal_type_id, principal_type_desc FROM principal_type ORDER BY principal_type_id' );
$editor->SetLookup( 'locale', 'SELECT \'\', \''.translate("*** Default Locale ***").'\' UNION SELECT locale, locale_name_locale FROM supported_locales ORDER BY 1 ASC' );
$editor->AddAttribute( 'locale', 'title', translate("The preferred language for this person.") );
$editor->AddAttribute( 'fullname', 'title', translate("The full name for this person, group or other type of principal.") );
param_to_global('id', 'int', 'old_id', 'principal_id' );
$editor->SetWhere( 'principal_id='.$id );

$editor->AddField('is_admin', 'EXISTS( SELECT 1 FROM role_member WHERE role_no = 1 AND role_member.user_no = dav_principal.user_no )' );
$editor->AddAttribute('is_admin', 'title', translate('An "Administrator" user has full rights to the whole DAViCal System'));

$privilege_names = array( 'read', 'write-properties', 'write-content', 'unlock', 'read-acl', 'read-current-user-privilege-set',
                         'bind', 'unbind', 'write-acl', 'read-free-busy', 'schedule-deliver-invite', 'schedule-deliver-reply',
                         'schedule-query-freebusy', 'schedule-send-invite', 'schedule-send-reply', 'schedule-send-freebusy' );

$delete_collection_confirmation_required = null;
$delete_principal_confirmation_required = null;

function handle_subaction( $subaction ) {
  global $session, $c, $id, $editor, $delete_collection_confirmation_required, $delete_principal_confirmation_required;

  dbg_error_log('admin-principal-edit',':handle_action: Action %s', $subaction );

  switch( $subaction ) {
    case 'delete_collection':
      dbg_error_log('admin-principal-edit',':handle_action: Deleting collection %s for principal %d', $_GET['dav_name'], $id );
      if ( $session->AllowedTo('Admin')
                || ($id > 0 && $session->principal_id == $id) ) {
        if ( $session->CheckConfirmationHash('GET', 'confirm') ) {
          dbg_error_log('admin-principal-edit',':handle_action: Allowed to delete collection %s for principal %d', $_GET['dav_name'], $id );
          $qry = new AwlQuery('DELETE FROM collection WHERE dav_name=?;', $_GET['dav_name'] );
          if ( $qry->Exec() ) {
            $c->messages[] = i18n('Collection deleted');
            return true;
          }
          else {
            $c->messages[] = i18n('There was an error writing to the database.');
            return false;
          }
        }
        else {
          $c->messages[] = i18n('Please confirm deletion of collection - see below');
          $delete_collection_confirmation_required = $session->BuildConfirmationHash('GET', 'confirm');
          return false;
        }
      }
      break;

    case 'delete_principal':
      dbg_error_log('admin-principal-edit',':handle_action: Deleting principal %d', $id );
      if ( $session->AllowedTo('Admin') ) {
        if ( $session->CheckConfirmationHash('GET', 'confirm') ) {
          dbg_error_log('admin-principal-edit',':handle_action: Allowed to delete principal %d -%s', $id, $editor->Value('username') );
          $qry = new AwlQuery('DELETE FROM dav_principal WHERE principal_id=?;', $id );
          if ( $qry->Exec() ) {
            $c->messages[] = i18n('Principal deleted');
            return true;
          }
          else {
            $c->messages[] = i18n('There was an error writing to the database.');
            return false;
          }
        }
        else {
          $c->messages[] = i18n('Please confirm deletion of the principal');
          $delete_principal_confirmation_required = $session->BuildConfirmationHash('GET', 'confirm');
          return false;
        }
      }
      break;

    default:
      return false;
  }
  return false;
}

if ( isset($_GET['subaction']) ) {
  handle_subaction($_GET['subaction']);
}


$can_write_principal = ($session->AllowedTo('Admin') || $session->principal_id == $id );
$post_values = false;

if ( isset($_POST['xxxxusername']) ) {
  $_POST['xxxxusername'] = trim(str_replace('/', '', $_POST['xxxxusername']));
  if ( $_POST['xxxxusername'] == '' ) {
    $c->messages[] = i18n("The username must not be blank, and may not contain a slash");
    $can_write_principal = false;
  }
};
if ( isset($_POST['fullname']) && trim($_POST['fullname']) == '' ) {
  $c->messages[] = i18n("The full name must not be blank.");
  $can_write_principal = false;
};
if ( isset($_POST['email']) && trim($_POST['email']) == '' ) {
  $c->messages[] = i18n("The email address really should not be blank.");
}

$pwstars = '@@@@@@@@@@';
if ( $can_write_principal && $editor->IsSubmit() ) {
  $editor->WhereNewRecord( "principal_id=(SELECT CURRVAL('dav_id_seq'))" );
  if ( ! $session->AllowedTo('Admin') ) {
    unset($_POST['admin_role']);
    unset($_POST['user_active']);
  }
  unset($_POST['password']);
  if ( $_POST['newpass1'] != '' && $_POST['newpass1'] != $pwstars ) {
    if ( $_POST['newpass1'] == $_POST['newpass2'] ) {
      $_POST['password'] = $_POST['newpass1'];
    }
    else {
      $c->messages[] = "Password not updated. The supplied passwords do not match.";
    }
  }
  if ( isset($_POST['fullname']) && !isset($_POST['displayname']) ) {
    $_POST['displayname'] = $_POST['fullname'];
  }
  if ( isset($_POST['default_privileges']) ) {
    $privilege_bitpos = array_flip($privilege_names);
    $priv_names = array_keys($_POST['default_privileges']);
    $privs = privilege_to_bits($priv_names);
    $_POST['default_privileges'] = sprintf('%024s',decbin($privs));
    $editor->Assign('default_privileges', $privs_dec);
  }
  if ( $editor->IsCreate() ) {
    $c->messages[] = i18n("Creating new Principal record.");
  }
  else {
    $c->messages[] = i18n("Updating Principal record.");
  }
  $editor->Write();
  if ( $_POST['type_id'] != 3 && $editor->IsCreate() ) {
    /** We only add the default calendar if it isn't a group, and this is a create action */
    require_once('auth-functions.php');
    CreateHomeCalendar($editor->Value('username'));
  }
  if ( $session->AllowedTo('Admin') ) {
    if ( $_POST['is_admin'] == 'on' ) {
      $sql = 'INSERT INTO role_member (role_no, user_no) SELECT 1, dav_principal.user_no FROM dav_principal WHERE user_no = :user_no AND NOT EXISTS(SELECT 1 FROM role_member rm WHERE rm.role_no = 1 AND rm.user_no = dav_principal.user_no )';
      $editor->Assign('is_admin', 't');
    }
    else {
      $sql = 'DELETE FROM role_member WHERE role_no = 1 AND user_no = :user_no';
      $editor->Assign('is_admin', 'f');
    }
    $params['user_no'] = $editor->Value('user_no');
    $qry = new AwlQuery( $sql, $params );
    $qry->Exec('admin-principal-edit');
  }
}
else {
  $editor->GetRecord();
  if ( $editor->IsSubmit() ) {
    $post_values = true;
  }
}
if ( $editor->Available() ) {
  $c->page_title = $editor->Title(translate('Principal').': '.$editor->Value('fullname'));
}
else {
  $c->page_title = $editor->Title(translate('Create New Principal'));
  $privs = decbin(privilege_to_bits($c->default_privileges));
  $editor->Assign('default_privileges', $privs);
  $editor->Assign('user_active', 't');
  foreach( $c->template_usr AS $k => $v ) {
    $editor->Assign($k, $v);
  }
}
if ( $post_values ) {
  $editor->PostToValues();
  if ( isset($_POST['default_privileges']) ) {
    $privilege_bitpos = array_flip($privilege_names);
    $priv_names = array_keys($_POST['default_privileges']);
    $privs = privilege_to_bits($priv_names);
    $_POST['default_privileges'] = sprintf('%024s',decbin($privs));
    $editor->Assign('default_privileges', $_POST['default_privileges']);
  }
}

$privilege_xlate = array(
  'all' => translate('All privileges'),
  'read' => translate('Read'),
  'write-properties' => translate('Write Metadata'),
  'write-content' => translate('Write Data'),
  'unlock' => translate('Override a Lock'),
  'read-acl' => translate('Read Access Controls'),
  'read-current-user-privilege-set' => translate('Read Current User\'s Access'),
  'bind' => translate('Create Events/Collections'),
  'unbind' => translate('Delete Events/Collections'),
  'write-acl' => translate('Write Access Controls'),
  'read-free-busy' => translate('Read Free/Busy Information'),
  'schedule-deliver-invite' => translate('Scheduling: Deliver an Invitation'),
  'schedule-deliver-reply' => translate('Scheduling: Deliver a Reply'),
  'schedule-query-freebusy' => translate('Scheduling: Query free/busy'),
  'schedule-send-invite' => translate('Scheduling: Send an Invitation'),
  'schedule-send-reply' => translate('Scheduling: Send a Reply'),
  'schedule-send-freebusy' => translate('Scheduling: Send free/busy'),
  'write' => translate('Write'),
  'schedule-deliver' => translate('Scheduling: Delivery'),
  'schedule-send' => translate('Scheduling: Sending')
);

/**
* privilege_format_function is for formatting the binary privileges from the
* database, including localising them.  This is a hook function for a browser
* column object, so it takes three parameters:
* @param mixed $value The value of the column.
* @param BrowserColumn $column The BrowserColumn object we are hooked into.
* @param dbrow $row The row object we read from the database.
* @return string The formatted privileges.
*/
function privilege_format_function( $value, $column, $row ) {
  global $privilege_xlate;

  $privs = bits_to_privilege($value);
  $formatted = '';
  foreach( $privs AS $k => $v ) {
    $formatted .= ($formatted == '' ? '' : ' , ');
    $v = preg_replace( '{^.*:}', '', $v );
    $formatted .= (isset($privilege_xlate[$v]) ? $privilege_xlate[$v] : $v );
  }
  return $formatted;
}


$default_privileges = bindec($editor->Value('default_privileges'));
$privileges_set = '<div id="privileges">';
for( $i=0; $i<count($privilege_names); $i++ ) {
  $privilege_set = ( (1 << $i) & $default_privileges ? ' CHECKED' : '');
  $privileges_set .= '<label class="privilege"><input name="default_privileges['.$privilege_names[$i].']" id="default_privileges_'.$privilege_names[$i].'" type="checkbox"'.$privilege_set.'>'.$privilege_xlate[$privilege_names[$i]].'</label>'."\n";
}
$privileges_set .= '</div>';

$prompt_principal_id = translate('Principal ID');
$value_id = ( $editor->Available() ? '##principal_id.hidden####principal_id.value##' : translate('New Principal'));
$prompt_username = translate('Username');
$prompt_password_1 = translate('Change Password');
$prompt_password_1 = translate('Confirm Password');
$prompt_fullname = translate('Fullname');
$prompt_displayname = translate('Display Name');
$prompt_email = translate('Email Address');
$prompt_date_format = translate('Date Format Style');
$prompt_admin = translate('Administrator');
$prompt_active = translate('Active');
$prompt_locale = translate('Locale');
$prompt_type = translate('Principal Type');
$prompt_privileges = translate('Default Privileges');

$btn_all = htmlspecialchars(translate('All'));             $btn_all_title = htmlspecialchars(translate('Toggle all privileges'));
$btn_rw  = htmlspecialchars(translate('Read/Write'));      $btn_rw_title = htmlspecialchars(translate('Set read+write privileges'));
$btn_read = htmlspecialchars(translate('Read'));           $btn_read_title = htmlspecialchars(translate('Set read privileges'));
$btn_fb = htmlspecialchars(translate('Free/Busy'));        $btn_fb_title = htmlspecialchars(translate('Set free/busy privileges'));
$btn_sd = htmlspecialchars(translate('Schedule Deliver')); $btn_sd_title = htmlspecialchars(translate('Set schedule-deliver privileges'));
$btn_ss = htmlspecialchars(translate('Schedule Send'));    $btn_ss_title = htmlspecialchars(translate('Set schedule-deliver privileges'));

$admin_row_entry = '';
$delete_principal_button = '';
if ( $session->AllowedTo('Admin') ) {
  $admin_row_entry = ' <tr> <th class="right">'.$prompt_admin.':</th><td class="left">##is_admin.checkbox##</td> </tr>';
  $admin_row_entry .= ' <tr> <th class="right">'.$prompt_active.':</th><td class="left">##user_active.checkbox##</td> </tr>';
  if ( isset($id) )
    $delete_principal_button = '<a href="'.$c->base_url . '/admin.php?action=edit&t=principal&subaction=delete_principal&id='.$id.'" class="submit">' . translate("Delete Principal") . '</a>';
}

$id = $editor->Value('principal_id');
$template = <<<EOTEMPLATE
##form##
<script language="javascript">
function toggle_privileges() {
  var argv = toggle_privileges.arguments;
  var argc = argv.length;

  if ( argc < 2 ) {
    return;
  }
  var match_me = argv[0];

  var set_to = -1;
  if ( argv[1] == 'all' ) {
    var form = document.getElementById(argv[2]);
    var fieldcount = form.elements.length;
    var matching = '/^' + match_me + '/';
    for (var i = 0; i < fieldcount; i++) {
      var fieldname = form.elements[i].name;
      if ( fieldname.match( match_me ) ) {
        if ( set_to == -1 ) {
          set_to = ( form.elements[i].checked ? 0 : 1 );
        }
        form.elements[i].checked = set_to;
      }
    }
  }
  else {
    for (var i = 1; i < argc; i++) {
      var f = document.getElementById( match_me + '_' + argv[i]);
      if ( set_to == -1 ) {
        set_to = ( f.checked ? 0 : 1 );
      }
      f.checked = set_to;
    }
  }
}
</script>
<style>
th.right, label.privilege {
  white-space:nowrap;
}
label.privilege {
  margin:0.2em 1em 0.2em 0.1em;
  padding:0 0.2em;
  line-height:1.6em;
  font-size:87%;
}
</style>
<table>
 <tr> <th class="right">$prompt_principal_id:</th><td class="left">
  <table width="100%" class="form_inner"><tr>
   <td>$value_id</td>
   <td align="right">$delete_principal_button</td>
  </tr></table>
 </td></tr>
 <tr> <th class="right">$prompt_username:</th>    <td class="left">##xxxxusername.input.50##</td> </tr>
 <tr> <th class="right">$prompt_password_1:</th>  <td class="left">##newpass1.password.$pwstars##</td> </tr>
 <tr> <th class="right">$prompt_password_1:</th>  <td class="left">##newpass2.password.$pwstars##</td> </tr>
 <tr> <th class="right">$prompt_fullname:</th>    <td class="left">##fullname.input.50##</td> </tr>
 <tr> <th class="right">$prompt_email:</th>       <td class="left">##email.input.50##</td> </tr>
 <tr> <th class="right">$prompt_locale:</th>      <td class="left">##locale.select##</td> </tr>
 <tr> <th class="right">$prompt_date_format:</th> <td class="left">##date_format_type.select##</td> </tr>
 <tr> <th class="right">$prompt_type:</th>        <td class="left">##type_id.select##</td> </tr>
 $admin_row_entry
 <tr> <th class="right">$prompt_privileges:</th><td class="left">
<input type="button" value="$btn_all" class="submit" title="$btn_all_title" onclick="toggle_privileges('default_privileges', 'all', 'editor_1');">
<input type="button" value="$btn_rw" class="submit" title="$btn_rw_title"
 onclick="toggle_privileges('default_privileges', 'read', 'write-properties', 'write-content', 'bind', 'unbind', 'read-free-busy',
                            'read-current-user-privilege-set', 'schedule-deliver-invite', 'schedule-deliver-reply', 'schedule-query-freebusy',
                            'schedule-send-invite', 'schedule-send-reply', 'schedule-send-freebusy' );">
<input type="button" value="$btn_read" class="submit" title="$btn_read_title"
 onclick="toggle_privileges('default_privileges', 'read', 'read-free-busy', 'schedule-query-freebusy', 'read-current-user-privilege-set' );">
<input type="button" value="$btn_fb" class="submit" title="$btn_fb_title"
 onclick="toggle_privileges('default_privileges', 'read-free-busy', 'schedule-query-freebusy' );">
<input type="button" value="$btn_sd" class="submit" title="$btn_sd_title"
 onclick="toggle_privileges('default_privileges', 'schedule-deliver-invite', 'schedule-deliver-reply', 'schedule-query-freebusy' );">
<input type="button" value="$btn_ss" class="submit" title="$btn_ss_title"
 onclick="toggle_privileges('default_privileges', 'schedule-send-invite', 'schedule-send-reply', 'schedule-send-freebusy' );">
<br>$privileges_set</td> </tr>
 <tr> <th class="right"></th>                   <td class="left" colspan="2">##submit##</td> </tr>
</table>
</form>
EOTEMPLATE;

$editor->SetTemplate( $template );
$page_elements[] = $editor;

if ( isset($delete_principal_confirmation_required) ) {
  $html = '<p class="error">';
  $html .= sprintf('<b>%s</b> \'%s\' <a class="error" href="%s&%s">%s</a> %s',
       translate('Deleting Principal:'), $editor->Value('displayname'), $_SERVER['REQUEST_URI'],
        $delete_principal_confirmation_required, translate('Confirm Deletion of the Principal'),
        translate('All of the principal\'s calendars and events will be unrecoverably deleted.') );
  $html .= "</p>\n";
  $page_elements[] = $html;
}


if ( isset($id) ) {
  $browser = new Browser(translate('Group Memberships'));
  $c->stylesheets[] = 'css/browse.css';
  $c->scripts[] = 'js/browse.js';

  $browser->AddColumn( 'group_id', translate('ID'), 'right', '##principal_link##' );
  $rowurl = $c->base_url . '/admin.php?action=edit&t=principal&id=';
  $browser->AddHidden( 'principal_link', "'<a href=\"$rowurl' || principal_id || '\">' || principal_id || '</a>'" );
  $browser->AddColumn( 'displayname', translate('Display Name') );
  $browser->AddColumn( 'member_of', translate('Is Member of'), '', '', 'is_member_of_list(principal_id)' );
  $browser->AddColumn( 'members', translate('Has Members'), '', '', 'has_members_list(principal_id)' );

  $browser->SetOrdering( 'displayname', 'A' );

  $browser->SetJoins( "group_member LEFT JOIN dav_principal ON (group_id = principal_id) " );
  $browser->SetWhere( 'user_active AND member_id = '.$id );

  if ( $c->enable_row_linking ) {
    $browser->RowFormat( '<tr onMouseover="LinkHref(this,1);" title="'.translate('Click to edit principal details').'" class="r%d">', '</tr>', '#even' );
  }
  else {
    $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
  }
  $browser->DoQuery();
  $page_elements[] = $browser;


  if ( $editor->Value('type_id') == 3 ) {

    $grouprow = new Editor("Group Members", "group_member");
    $grouprow->SetLookup( 'member_id', 'SELECT principal_id, coalesce(displayname,fullname,username) FROM dav_principal WHERE principal_id NOT IN (SELECT member_id FROM group_member WHERE group_id = '.$id.')');
    $grouprow->SetSubmitName( 'savegrouprow' );

    if ( $can_write_principal ) {
      if ( $grouprow->IsSubmit() ) {
        if ( $grouprow->IsUpdate() )
          $c->messages[] = translate('Updating Member of this Group Principal');
        else
          $c->messages[] = translate('Adding new member to this Group Principal');

        $_POST['group_id'] = $id;
        $member_id = intval($_POST['member_id']);
        $grouprow->SetWhere( "group_id=".qpg($id)." AND member_id=$member_id");
        $grouprow->Write( );
        unset($_GET['member_id']);
      }
      elseif ( isset($_GET['delete_member']) ) {
        $qry = new AwlQuery("DELETE FROM group_member WHERE group_id=:group_id AND member_id = :member_id",
                              array( ':group_id' => $id, ':member_id' => intval($_GET['delete_member']) ));
        $qry->Exec('principal-edit');
        $c->messages[] = translate('Member deleted from this Group Principal');
      }
    }

    function edit_group_row( $row_data ) {
      global $grouprow, $id, $c;

      $form_url = preg_replace( '#&(edit|delete)_group=\d+#', '', $_SERVER['REQUEST_URI'] );

      $template = <<<EOTEMPLATE
<form method="POST" enctype="multipart/form-data" id="add_group" action="$form_url">
  <td class="left"><input type="hidden" name="id" value="$id"></td>
  <td class="left" colspan="3">##member_id.select## &nbsp; ##Add.submit##</td>
  <td class="center"></td>
</form>

EOTEMPLATE;

      $grouprow->SetTemplate( $template );
      $grouprow->Title("");
      if ( $row_data->group_id > -1 ) $grouprow->SetRecord( $row_data );

      return $grouprow->Render();
    }

    $browser = new Browser(translate('Group Members'));

    $browser->AddColumn( 'group_id', translate('ID'), 'right', '##principal_link##' );
    $rowurl = $c->base_url . '/admin.php?action=edit&t=principal&id=';
    $browser->AddHidden( 'principal_id' );
    $browser->AddHidden( 'principal_link', "'<a href=\"$rowurl' || principal_id || '\">' || principal_id || '</a>'" );
    $browser->AddColumn( 'displayname', translate('Display Name') );
    $browser->AddColumn( 'member_of', translate('Is Member of'), '', '', 'is_member_of_list(principal_id)' );
    $browser->AddColumn( 'members', translate('Has Members'), '', '', 'has_members_list(principal_id)' );

    if ( $can_write_principal ) {
      $del_link  = '<a href="'.$c->base_url.'/admin.php?action=edit&t=principal&id='.$id.'&delete_member=##principal_id##" class="submit">'.translate('Remove').'</a>';
      $browser->AddColumn( 'action', translate('Action'), 'center', '', "'$edit_link&nbsp;$del_link'" );
    }

    $browser->SetOrdering( 'displayname', 'A' );

    $browser->SetJoins( "group_member LEFT JOIN dav_principal ON (member_id = principal_id) " );
    $browser->SetWhere( 'user_active AND group_id = '.$id );

    if ( $c->enable_row_linking ) {
      $browser->RowFormat( '<tr onMouseover="LinkHref(this,1);" title="'.translate('Click to edit principal details').'" class="r%d">', '</tr>', '#even' );
    }
    else {
      $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
    }
    $browser->DoQuery();
    $page_elements[] = $browser;

    if ( $can_write_principal ) {
      $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
      $extra_row = array( 'group_id' => -1 );
      $browser->MatchedRow('group_id', -1, 'edit_group_row');
      $extra_row = (object) $extra_row;
      $browser->AddRow($extra_row);
    }
  }


    $grantrow = new Editor("Grants", "grants");
    $grantrow->SetSubmitName( 'savegrantrow' );
    $edit_grant_clause = '';
    if ( isset($_GET['edit_grant']) ) {
      $edit_grant_clause = ' AND to_principal != '.intval($_GET['edit_grant']);
    }
    $grantrow->SetLookup( 'to_principal', 'SELECT principal_id, displayname FROM dav_principal WHERE principal_id NOT IN (SELECT to_principal FROM grants WHERE by_principal = '.$id.$edit_grant_clause.') ORDER BY fullname' );
    if ( $can_write_principal ) {
      if ( $grantrow->IsSubmit() ) {
        if ( $grantrow->IsUpdate() )
          $c->messages[] = translate('Updating grants by this Principal');
        else
          $c->messages[] = translate('Granting new privileges from this Principal');
        $_POST['by_principal'] = $id;
        $to_principal = intval($_POST['to_principal']);
        $orig_to_id =  intval($_POST['orig_to_id']);
        $grantrow->SetWhere( "by_principal=".qpg($id)." AND to_principal=$orig_to_id");
        if ( isset($_POST['grant_privileges']) ) {
          $privilege_bitpos = array_flip($privilege_names);
          $priv_names = array_keys($_POST['grant_privileges']);
          $privs = privilege_to_bits($priv_names);
          $_POST['privileges'] = sprintf('%024s',decbin($privs));
          $grantrow->Assign('privileges', $privs_dec);
        }
        $grantrow->Write( );
        unset($_GET['to_principal']);
      }
      elseif ( isset($_GET['delete_grant']) ) {
        $qry = new AwlQuery("DELETE FROM grants WHERE by_principal=:grantor_id AND to_principal = :to_principal",
                              array( ':grantor_id' => $id, ':to_principal' => intval($_GET['delete_grant']) ));
        $qry->Exec('principal-edit');
        $c->messages[] = translate('Deleted a grant from this Principal');
      }
    }

    function edit_grant_row( $row_data ) {
      global $grantrow, $id, $c, $privilege_xlate, $privilege_names;
      global $btn_all, $btn_all_title, $btn_rw, $btn_rw_title, $btn_read, $btn_read_title;
      global $btn_fb, $btn_fb_title, $btn_sd, $btn_sd_title, $btn_ss, $btn_ss_title;

      if ( $row_data->to_principal > -1 ) {
        $grantrow->SetRecord( $row_data );
      }

      $grant_privileges = bindec($grantrow->Value('grant_privileges'));
      $privileges_set = '<div id="privileges">';
      for( $i=0; $i < count($privilege_names); $i++ ) {
        $privilege_set = ( (1 << $i) & $grant_privileges ? ' CHECKED' : '');
        $privileges_set .= '<label class="privilege"><input name="grant_privileges['.$privilege_names[$i].']" id="grant_privileges_'.$privilege_names[$i].'" type="checkbox"'.$privilege_set.'>'.$privilege_xlate[$privilege_names[$i]].'</label>'."\n";
      }
      $privileges_set .= '</div>';

      $orig_to_id = $row_data->to_principal;
      $form_id = $grantrow->Id();
      $form_url = preg_replace( '#&(edit|delete)_grant=\d+#', '', $_SERVER['REQUEST_URI'] );

      $template = <<<EOTEMPLATE
<form method="POST" enctype="multipart/form-data" id="form_$form_id" action="$form_url">
  <td class="left" colspan="2"><input type="hidden" name="id" value="$id"><input type="hidden" name="orig_to_id" value="$orig_to_id">##to_principal.select##</td>
  <td class="left" colspan="2">
<input type="button" value="$btn_all" class="submit" title="$btn_all_title" onclick="toggle_privileges('grant_privileges', 'all', 'form_$form_id');">
<input type="button" value="$btn_rw" class="submit" title="$btn_rw_title"
 onclick="toggle_privileges('grant_privileges', 'read', 'write-properties', 'write-content', 'bind', 'unbind', 'read-free-busy',
                            'read-current-user-privilege-set', 'schedule-deliver-invite', 'schedule-deliver-reply', 'schedule-query-freebusy',
                            'schedule-send-invite', 'schedule-send-reply', 'schedule-send-freebusy' );">
<input type="button" value="$btn_read" class="submit" title="$btn_read_title"
 onclick="toggle_privileges('grant_privileges', 'read', 'read-free-busy', 'schedule-query-freebusy', 'read-current-user-privilege-set' );">
<input type="button" value="$btn_fb" class="submit" title="$btn_fb_title"
 onclick="toggle_privileges('grant_privileges', 'read-free-busy', 'schedule-query-freebusy' );">
<input type="button" value="$btn_sd" class="submit" title="$btn_sd_title"
 onclick="toggle_privileges('grant_privileges', 'schedule-deliver-invite', 'schedule-deliver-reply', 'schedule-query-freebusy' );">
<input type="button" value="$btn_ss" class="submit" title="$btn_ss_title"
 onclick="toggle_privileges('grant_privileges', 'schedule-send-invite', 'schedule-send-reply', 'schedule-send-freebusy' );">
<br>$privileges_set
  <td class="center">##submit##</td>
</form>

EOTEMPLATE;

      $grantrow->SetTemplate( $template );
      $grantrow->Title("");

      return $grantrow->Render();
    }

  $browser = new Browser(translate('Principal Grants'));

  $browser->AddColumn( 'to_principal', translate('To ID'), 'right', '##principal_link##' );
  $rowurl = $c->base_url . '/admin.php?action=edit&t=principal&id=';
  $browser->AddHidden( 'principal_link', "'<a href=\"$rowurl' || to_principal || '\">' || to_principal || '</a>'" );
  $browser->AddHidden( 'grant_privileges', 'privileges' );
  $browser->AddColumn( 'displayname', translate('Display Name') );
  $browser->AddColumn( 'privs', translate('Privileges'), '', '', 'privileges', '', '', 'privilege_format_function' );
  $browser->AddColumn( 'members', translate('Has Members'), '', '', 'has_members_list(principal_id)' );

  if ( $can_write_principal ) {
    $del_link  = '<a href="'.$c->base_url.'/admin.php?action=edit&t=principal&id='.$id.'&delete_grant=##to_principal##" class="submit">'.translate('Revoke').'</a>';
    $edit_link  = '<a href="'.$c->base_url.'/admin.php?action=edit&t=principal&id='.$id.'&edit_grant=##to_principal##" class="submit">'.translate('Edit').'</a>';
    $browser->AddColumn( 'action', translate('Action'), 'center', '', "'$edit_link&nbsp;$del_link'" );
  }

  $browser->SetOrdering( 'displayname', 'A' );

  $browser->SetJoins( "grants LEFT JOIN dav_principal ON (to_principal = principal_id) " );
  $browser->SetWhere( 'by_principal = '.$id );

  if ( $c->enable_row_linking ) {
    $browser->RowFormat( '<tr onMouseover="LinkHref(this,1);" title="'.translate('Click to edit principal details').'" class="r%d">', '</tr>', '#even' );
  }
  else {
    $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
  }
  $browser->DoQuery();
  $page_elements[] = $browser;


  if ( $can_write_principal ) {
    if ( isset($_GET['edit_grant']) ) {
      $browser->MatchedRow('to_principal', $_GET['edit_grant'], 'edit_grant_row');
    }
    else if ( isset($id ) ) {
      $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
      $extra_row = array( 'to_principal' => -1 );
      $browser->MatchedRow('to_principal', -1, 'edit_grant_row');
      $extra_row = (object) $extra_row;
      $browser->AddRow($extra_row);
    }
  }


  $browser = new Browser(translate('Principal Collections'));

  $browser->AddColumn( 'collection_id', translate('ID'), 'right', '##collection_link##' );
  $rowurl = $c->base_url . '/admin.php?action=edit&t=collection&id=';
  $browser->AddHidden( 'collection_link', "'<a href=\"$rowurl' || collection_id || '\">' || collection_id || '</a>'" );
  $browser->AddColumn( 'dav_name', translate('Path') );
  $browser->AddColumn( 'dav_displayname', translate('Display Name') );
  $browser->AddColumn( 'publicly_readable', translate('Public'), 'centre', '', 'CASE WHEN publicly_readable THEN \''.translate('Yes').'\' ELSE \''.translate('No').'\' END' );
  $browser->AddColumn( 'privs', translate('Privileges'), '', '',
          "COALESCE( privileges_list(default_privileges), '[".translate('from principal')."]')" );
  $delurl = $c->base_url . '/admin.php?action=edit&t=principal&id='.$id.'&dav_name=##URL:dav_name##&subaction=delete_collection';
  $browser->AddColumn( 'delete', translate('Action'), 'center', '', "'<a class=\"submit\" href=\"$delurl\">".translate('Delete')."</a>'" );

  $browser->SetOrdering( 'dav_name', 'A' );

  $browser->SetJoins( "collection " );
  $browser->SetWhere( 'user_no = '.intval($editor->Value('user_no')) );

  $browser->AddRow( array( 'dav_name' => '<a href="'.$rowurl.'&user_no='.intval($editor->Value('user_no')).'" class="submit">'.translate('Create Collection').'</a>' ));

  if ( $c->enable_row_linking ) {
    $browser->RowFormat( '<tr onMouseover="LinkHref(this,1);" title="'.translate('Click to edit principal details').'" class="r%d">', '</tr>', '#even' );
  }
  else {
    $browser->RowFormat( '<tr class="r%d">', '</tr>', '#even' );
  }
  $browser->DoQuery();
  $page_elements[] = $browser;
  if ( isset($delete_collection_confirmation_required) ) {
    $html = '<table><tr><td class="error">';
    $html .= sprintf('<b>%s</b> "%s" <a class="error" href="%s&%s">%s</a> %s',
                translate('Deleting Collection:'), $_GET['dav_name'], $_SERVER['REQUEST_URI'],
                $delete_collection_confirmation_required,
                translate('Confirm Deletion of the Collection'),
                translate('All collection data will be unrecoverably deleted.') );
    $html .= "</td></tr></table>\n";
    $page_elements[] = $html;
  }


}