Gurpartap Singh

<?phpfunction custom_form_alter($form_id, &$form) {  $arg0 = '';  $nid = '';  $arg0 = arg(0);  if ($arg0 == 'node') {    $nid = arg(1);  }  else if ($arg0 == 'comment') {    $nid = arg(1);  }  if ($arg0 != '' && $nid != '' && $form_id == 'comment_form') {    $case_node = node_load(array('nid' => $nid));    if (!custom_user_oneof_owner($case_node->assign_to, $case_node->uid, $case_node->pid)) {      return drupal_access_denied();    }  }} function custom_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {  switch ($op) {    case 'view':      if ($node->case_status_id == 6 && !custom_user_oneof_owner($node->assign_to, $node->uid, $node->pid) && $node->type == 'casetracker_basic_case') {        return drupal_access_denied();      }      break;  }} function custom_user_oneof_owner($aid, $cuid, $pid) {  global $user;  $project_node = node_load(array('nid' => $pid));   if ($user->uid == $project_node->uid || $user->uid == $cuid || $user->uid == $aid || $user->uid == 1) {    return true;  }  else {    return false;  }}